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Rename format_arg => format_expand_arg
[tig.git] / tig.c
blobdb2a5f36e7c1febbe080cdcf40f7ed1417db35bb
1 /* Copyright (c) 2006-2013 Jonas Fonseca <fonseca@diku.dk>
2 *
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
13
14 #include "tig.h"
15 #include "io.h"
16 #include "refs.h"
17 #include "graph.h"
18 #include "git.h"
19
20 static void TIG_NORETURN die(const char *err, ...) PRINTF_LIKE(1, 2);
21 static void warn(const char *msg, ...) PRINTF_LIKE(1, 2);
22 static void report(const char *msg, ...) PRINTF_LIKE(1, 2);
23 #define report_clear() report("%s", "")
24
25
26 enum input_status {
27 INPUT_OK,
28 INPUT_SKIP,
29 INPUT_STOP,
30 INPUT_CANCEL
31 };
32
33 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
34
35 static char *prompt_input(const char *prompt, input_handler handler, void *data);
36 static bool prompt_yesno(const char *prompt);
37 static char *read_prompt(const char *prompt);
38
39 struct menu_item {
40 int hotkey;
41 const char *text;
42 void *data;
43 };
44
45 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected);
46
47 #define GRAPHIC_ENUM(_) \
48 _(GRAPHIC, ASCII), \
49 _(GRAPHIC, DEFAULT), \
50 _(GRAPHIC, UTF_8)
51
52 DEFINE_ENUM(graphic, GRAPHIC_ENUM);
53
54 #define DATE_ENUM(_) \
55 _(DATE, NO), \
56 _(DATE, DEFAULT), \
57 _(DATE, LOCAL), \
58 _(DATE, RELATIVE), \
59 _(DATE, SHORT)
60
61 DEFINE_ENUM(date, DATE_ENUM);
62
63 struct time {
64 time_t sec;
65 int tz;
66 };
67
68 static inline int timecmp(const struct time *t1, const struct time *t2)
69 {
70 return t1->sec - t2->sec;
71 }
72
73 static const char *
74 mkdate(const struct time *time, enum date date)
75 {
76 static char buf[DATE_WIDTH + 1];
77 static const struct enum_map reldate[] = {
78 { "second", 1, 60 * 2 },
79 { "minute", 60, 60 * 60 * 2 },
80 { "hour", 60 * 60, 60 * 60 * 24 * 2 },
81 { "day", 60 * 60 * 24, 60 * 60 * 24 * 7 * 2 },
82 { "week", 60 * 60 * 24 * 7, 60 * 60 * 24 * 7 * 5 },
83 { "month", 60 * 60 * 24 * 30, 60 * 60 * 24 * 365 },
84 { "year", 60 * 60 * 24 * 365, 0 },
85 };
86 struct tm tm;
87
88 if (!date || !time || !time->sec)
89 return "";
90
91 if (date == DATE_RELATIVE) {
92 struct timeval now;
93 time_t date = time->sec + time->tz;
94 time_t seconds;
95 int i;
96
97 gettimeofday(&now, NULL);
98 seconds = now.tv_sec < date ? date - now.tv_sec : now.tv_sec - date;
99 for (i = 0; i < ARRAY_SIZE(reldate); i++) {
100 if (seconds >= reldate[i].value && reldate[i].value)
101 continue;
102
103 seconds /= reldate[i].namelen;
104 if (!string_format(buf, "%ld %s%s %s",
105 seconds, reldate[i].name,
106 seconds > 1 ? "s" : "",
107 now.tv_sec >= date ? "ago" : "ahead"))
108 break;
109 return buf;
110 }
111 }
112
113 if (date == DATE_LOCAL) {
114 time_t date = time->sec + time->tz;
115 localtime_r(&date, &tm);
116 }
117 else {
118 gmtime_r(&time->sec, &tm);
119 }
120 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
121 }
122
123
124 #define AUTHOR_ENUM(_) \
125 _(AUTHOR, NO), \
126 _(AUTHOR, FULL), \
127 _(AUTHOR, ABBREVIATED), \
128 _(AUTHOR, EMAIL), \
129 _(AUTHOR, EMAIL_USER)
130
131 DEFINE_ENUM(author, AUTHOR_ENUM);
132
133 struct ident {
134 const char *name;
135 const char *email;
136 };
137
138 static const struct ident unknown_ident = { "Unknown", "unknown@localhost" };
139
140 static inline int
141 ident_compare(const struct ident *i1, const struct ident *i2)
142 {
143 if (!i1 || !i2)
144 return (!!i1) - (!!i2);
145 if (!i1->name || !i2->name)
146 return (!!i1->name) - (!!i2->name);
147 return strcmp(i1->name, i2->name);
148 }
149
150 static const char *
151 get_author_initials(const char *author)
152 {
153 static char initials[AUTHOR_WIDTH * 6 + 1];
154 size_t pos = 0;
155 const char *end = strchr(author, '\0');
156
157 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@' || (c) == '-')
158
159 memset(initials, 0, sizeof(initials));
160 while (author < end) {
161 unsigned char bytes;
162 size_t i;
163
164 while (author < end && is_initial_sep(*author))
165 author++;
166
167 bytes = utf8_char_length(author, end);
168 if (bytes >= sizeof(initials) - 1 - pos)
169 break;
170 while (bytes--) {
171 initials[pos++] = *author++;
172 }
173
174 i = pos;
175 while (author < end && !is_initial_sep(*author)) {
176 bytes = utf8_char_length(author, end);
177 if (bytes >= sizeof(initials) - 1 - i) {
178 while (author < end && !is_initial_sep(*author))
179 author++;
180 break;
181 }
182 while (bytes--) {
183 initials[i++] = *author++;
184 }
185 }
186
187 initials[i++] = 0;
188 }
189
190 return initials;
191 }
192
193 static const char *
194 get_email_user(const char *email)
195 {
196 static char user[AUTHOR_WIDTH * 6 + 1];
197 const char *end = strchr(email, '@');
198 int length = end ? end - email : strlen(email);
199
200 string_format(user, "%.*s%c", length, email, 0);
201 return user;
202 }
203
204 #define author_trim(cols) (cols == 0 || cols > 10)
205
206 static const char *
207 mkauthor(const struct ident *ident, int cols, enum author author)
208 {
209 bool trim = author_trim(cols);
210 bool abbreviate = author == AUTHOR_ABBREVIATED || !trim;
211
212 if (author == AUTHOR_NO || !ident)
213 return "";
214 if (author == AUTHOR_EMAIL && ident->email)
215 return ident->email;
216 if (author == AUTHOR_EMAIL_USER && ident->email)
217 return get_email_user(ident->email);
218 if (abbreviate && ident->name)
219 return get_author_initials(ident->name);
220 return ident->name;
221 }
222
223 static const char *
224 mkmode(mode_t mode)
225 {
226 if (S_ISDIR(mode))
227 return "drwxr-xr-x";
228 else if (S_ISLNK(mode))
229 return "lrwxrwxrwx";
230 else if (S_ISGITLINK(mode))
231 return "m---------";
232 else if (S_ISREG(mode) && mode & S_IXUSR)
233 return "-rwxr-xr-x";
234 else if (S_ISREG(mode))
235 return "-rw-r--r--";
236 else
237 return "----------";
238 }
239
240 #define FILENAME_ENUM(_) \
241 _(FILENAME, NO), \
242 _(FILENAME, ALWAYS), \
243 _(FILENAME, AUTO)
244
245 DEFINE_ENUM(filename, FILENAME_ENUM);
246
247 #define IGNORE_SPACE_ENUM(_) \
248 _(IGNORE_SPACE, NO), \
249 _(IGNORE_SPACE, ALL), \
250 _(IGNORE_SPACE, SOME), \
251 _(IGNORE_SPACE, AT_EOL)
252
253 DEFINE_ENUM(ignore_space, IGNORE_SPACE_ENUM);
254
255 #define COMMIT_ORDER_ENUM(_) \
256 _(COMMIT_ORDER, DEFAULT), \
257 _(COMMIT_ORDER, TOPO), \
258 _(COMMIT_ORDER, DATE), \
259 _(COMMIT_ORDER, REVERSE)
260
261 DEFINE_ENUM(commit_order, COMMIT_ORDER_ENUM);
262
263 #define VIEW_INFO(_) \
264 _(MAIN, main, ref_head), \
265 _(DIFF, diff, ref_commit), \
266 _(LOG, log, ref_head), \
267 _(TREE, tree, ref_commit), \
268 _(BLOB, blob, ref_blob), \
269 _(BLAME, blame, ref_commit), \
270 _(BRANCH, branch, ref_head), \
271 _(HELP, help, ""), \
272 _(PAGER, pager, ""), \
273 _(STATUS, status, "status"), \
274 _(STAGE, stage, ref_status)
275
276 static struct encoding *
277 get_path_encoding(const char *path, struct encoding *default_encoding)
278 {
279 const char *check_attr_argv[] = {
280 "git", "check-attr", "encoding", "--", path, NULL
281 };
282 char buf[SIZEOF_STR];
283 char *encoding;
284
285 /* <path>: encoding: <encoding> */
286
287 if (!*path || !io_run_buf(check_attr_argv, buf, sizeof(buf))
288 || !(encoding = strstr(buf, ENCODING_SEP)))
289 return default_encoding;
290
291 encoding += STRING_SIZE(ENCODING_SEP);
292 if (!strcmp(encoding, ENCODING_UTF8)
293 || !strcmp(encoding, "unspecified")
294 || !strcmp(encoding, "set"))
295 return default_encoding;
296
297 return encoding_open(encoding);
298 }
299
300 /*
301 * User requests
302 */
303
304 #define VIEW_REQ(id, name, ref) REQ_(VIEW_##id, "Show " #name " view")
305
306 #define REQ_INFO \
307 REQ_GROUP("View switching") \
308 VIEW_INFO(VIEW_REQ), \
309 \
310 REQ_GROUP("View manipulation") \
311 REQ_(ENTER, "Enter current line and scroll"), \
312 REQ_(NEXT, "Move to next"), \
313 REQ_(PREVIOUS, "Move to previous"), \
314 REQ_(PARENT, "Move to parent"), \
315 REQ_(VIEW_NEXT, "Move focus to next view"), \
316 REQ_(REFRESH, "Reload and refresh"), \
317 REQ_(MAXIMIZE, "Maximize the current view"), \
318 REQ_(VIEW_CLOSE, "Close the current view"), \
319 REQ_(QUIT, "Close all views and quit"), \
320 \
321 REQ_GROUP("View specific requests") \
322 REQ_(STATUS_UPDATE, "Update file status"), \
323 REQ_(STATUS_REVERT, "Revert file changes"), \
324 REQ_(STATUS_MERGE, "Merge file using external tool"), \
325 REQ_(STAGE_UPDATE_LINE, "Update single line"), \
326 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
327 REQ_(DIFF_CONTEXT_DOWN, "Decrease the diff context"), \
328 REQ_(DIFF_CONTEXT_UP, "Increase the diff context"), \
329 \
330 REQ_GROUP("Cursor navigation") \
331 REQ_(MOVE_UP, "Move cursor one line up"), \
332 REQ_(MOVE_DOWN, "Move cursor one line down"), \
333 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
334 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
335 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
336 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
337 \
338 REQ_GROUP("Scrolling") \
339 REQ_(SCROLL_FIRST_COL, "Scroll to the first line columns"), \
340 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
341 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
342 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
343 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
344 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
345 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
346 \
347 REQ_GROUP("Searching") \
348 REQ_(SEARCH, "Search the view"), \
349 REQ_(SEARCH_BACK, "Search backwards in the view"), \
350 REQ_(FIND_NEXT, "Find next search match"), \
351 REQ_(FIND_PREV, "Find previous search match"), \
352 \
353 REQ_GROUP("Option manipulation") \
354 REQ_(OPTIONS, "Open option menu"), \
355 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
356 REQ_(TOGGLE_DATE, "Toggle date display"), \
357 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
358 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
359 REQ_(TOGGLE_GRAPHIC, "Toggle (line) graphics mode"), \
360 REQ_(TOGGLE_FILENAME, "Toggle file name display"), \
361 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
362 REQ_(TOGGLE_CHANGES, "Toggle local changes display in the main view"), \
363 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
364 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
365 REQ_(TOGGLE_IGNORE_SPACE, "Toggle ignoring whitespace in diffs"), \
366 REQ_(TOGGLE_COMMIT_ORDER, "Toggle commit ordering"), \
367 REQ_(TOGGLE_ID, "Toggle commit ID display"), \
368 REQ_(TOGGLE_FILES, "Toggle file filtering"), \
369 REQ_(TOGGLE_TITLE_OVERFLOW, "Toggle highlighting of commit title overflow"), \
370 \
371 REQ_GROUP("Misc") \
372 REQ_(PROMPT, "Bring up the prompt"), \
373 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
374 REQ_(SHOW_VERSION, "Show version information"), \
375 REQ_(STOP_LOADING, "Stop all loading views"), \
376 REQ_(EDIT, "Open in editor"), \
377 REQ_(NONE, "Do nothing")
378
379
380 /* User action requests. */
381 enum request {
382 #define REQ_GROUP(help)
383 #define REQ_(req, help) REQ_##req
384
385 /* Offset all requests to avoid conflicts with ncurses getch values. */
386 REQ_UNKNOWN = KEY_MAX + 1,
387 REQ_OFFSET,
388 REQ_INFO,
389
390 /* Internal requests. */
391 REQ_JUMP_COMMIT,
392
393 #undef REQ_GROUP
394 #undef REQ_
395 };
396
397 struct request_info {
398 enum request request;
399 const char *name;
400 int namelen;
401 const char *help;
402 };
403
404 static const struct request_info req_info[] = {
405 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
406 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
407 REQ_INFO
408 #undef REQ_GROUP
409 #undef REQ_
410 };
411
412 static enum request
413 get_request(const char *name)
414 {
415 int namelen = strlen(name);
416 int i;
417
418 for (i = 0; i < ARRAY_SIZE(req_info); i++)
419 if (enum_equals(req_info[i], name, namelen))
420 return req_info[i].request;
421
422 return REQ_UNKNOWN;
423 }
424
425
426 /*
427 * Options
428 */
429
430 /* Option and state variables. */
431 static enum graphic opt_line_graphics = GRAPHIC_DEFAULT;
432 static enum date opt_date = DATE_DEFAULT;
433 static enum author opt_author = AUTHOR_FULL;
434 static enum filename opt_filename = FILENAME_AUTO;
435 static bool opt_rev_graph = TRUE;
436 static bool opt_line_number = FALSE;
437 static bool opt_show_refs = TRUE;
438 static bool opt_show_changes = TRUE;
439 static bool opt_untracked_dirs_content = TRUE;
440 static bool opt_read_git_colors = TRUE;
441 static bool opt_wrap_lines = FALSE;
442 static bool opt_ignore_case = FALSE;
443 static bool opt_stdin = FALSE;
444 static bool opt_focus_child = TRUE;
445 static int opt_diff_context = 3;
446 static char opt_diff_context_arg[9] = "";
447 static enum ignore_space opt_ignore_space = IGNORE_SPACE_NO;
448 static char opt_ignore_space_arg[22] = "";
449 static enum commit_order opt_commit_order = COMMIT_ORDER_DEFAULT;
450 static char opt_commit_order_arg[22] = "";
451 static bool opt_notes = TRUE;
452 static char opt_notes_arg[SIZEOF_STR] = "--show-notes";
453 static int opt_num_interval = 5;
454 static double opt_hscroll = 0.50;
455 static double opt_scale_split_view = 2.0 / 3.0;
456 static double opt_scale_vsplit_view = 0.5;
457 static bool opt_vsplit = FALSE;
458 static int opt_tab_size = 8;
459 static int opt_author_width = AUTHOR_WIDTH;
460 static int opt_filename_width = FILENAME_WIDTH;
461 static char opt_path[SIZEOF_STR] = "";
462 static char opt_file[SIZEOF_STR] = "";
463 static char opt_ref[SIZEOF_REF] = "";
464 static unsigned long opt_goto_line = 0;
465 static char opt_head[SIZEOF_REF] = "";
466 static char opt_remote[SIZEOF_REF] = "";
467 static struct encoding *opt_encoding = NULL;
468 static char opt_encoding_arg[SIZEOF_STR] = ENCODING_ARG;
469 static iconv_t opt_iconv_out = ICONV_NONE;
470 static char opt_search[SIZEOF_STR] = "";
471 static char opt_cdup[SIZEOF_STR] = "";
472 static char opt_prefix[SIZEOF_STR] = "";
473 static char opt_git_dir[SIZEOF_STR] = "";
474 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
475 static char opt_editor[SIZEOF_STR] = "";
476 static bool opt_editor_lineno = TRUE;
477 static FILE *opt_tty = NULL;
478 static const char **opt_diff_argv = NULL;
479 static const char **opt_rev_argv = NULL;
480 static const char **opt_file_argv = NULL;
481 static const char **opt_blame_argv = NULL;
482 static int opt_lineno = 0;
483 static bool opt_show_id = FALSE;
484 static int opt_id_cols = ID_WIDTH;
485 static bool opt_file_filter = TRUE;
486 static bool opt_show_title_overflow = FALSE;
487 static int opt_title_overflow = 50;
488
489 #define is_initial_commit() (!get_ref_head())
490 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strncmp(rev, get_ref_head()->id, SIZEOF_REV - 1)))
491 #define load_refs() reload_refs(opt_git_dir, opt_remote, opt_head, sizeof(opt_head))
492
493 static inline void
494 update_diff_context_arg(int diff_context)
495 {
496 if (!string_format(opt_diff_context_arg, "-U%u", diff_context))
497 string_ncopy(opt_diff_context_arg, "-U3", 3);
498 }
499
500 static inline void
501 update_ignore_space_arg()
502 {
503 if (opt_ignore_space == IGNORE_SPACE_ALL) {
504 string_copy(opt_ignore_space_arg, "--ignore-all-space");
505 } else if (opt_ignore_space == IGNORE_SPACE_SOME) {
506 string_copy(opt_ignore_space_arg, "--ignore-space-change");
507 } else if (opt_ignore_space == IGNORE_SPACE_AT_EOL) {
508 string_copy(opt_ignore_space_arg, "--ignore-space-at-eol");
509 } else {
510 string_copy(opt_ignore_space_arg, "");
511 }
512 }
513
514 static inline void
515 update_commit_order_arg()
516 {
517 if (opt_commit_order == COMMIT_ORDER_TOPO) {
518 string_copy(opt_commit_order_arg, "--topo-order");
519 } else if (opt_commit_order == COMMIT_ORDER_DATE) {
520 string_copy(opt_commit_order_arg, "--date-order");
521 } else if (opt_commit_order == COMMIT_ORDER_REVERSE) {
522 string_copy(opt_commit_order_arg, "--reverse");
523 } else {
524 string_copy(opt_commit_order_arg, "");
525 }
526 }
527
528 static inline void
529 update_notes_arg()
530 {
531 if (opt_notes) {
532 string_copy(opt_notes_arg, "--show-notes");
533 } else {
534 /* Notes are disabled by default when passing --pretty args. */
535 string_copy(opt_notes_arg, "");
536 }
537 }
538
539 /*
540 * Line-oriented content detection.
541 */
542
543 #define LINE_INFO \
544 LINE(DIFF_HEADER, "diff --", COLOR_YELLOW, COLOR_DEFAULT, 0), \
545 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
546 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
547 LINE(DIFF_ADD2, " +", COLOR_GREEN, COLOR_DEFAULT, 0), \
548 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
549 LINE(DIFF_DEL2, " -", COLOR_RED, COLOR_DEFAULT, 0), \
550 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
551 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
552 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
553 LINE(DIFF_DELETED_FILE_MODE, \
554 "deleted file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
555 LINE(DIFF_COPY_FROM, "copy from ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
556 LINE(DIFF_COPY_TO, "copy to ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
557 LINE(DIFF_RENAME_FROM, "rename from ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
558 LINE(DIFF_RENAME_TO, "rename to ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
559 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
562 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
563 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
564 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
565 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
566 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
567 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
568 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
569 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
570 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
571 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
572 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
573 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
574 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
575 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
576 LINE(TESTED, " Tested-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
577 LINE(REVIEWED, " Reviewed-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
578 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
579 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
580 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
581 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
582 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
583 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
584 LINE(ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
585 LINE(OVERFLOW, "", COLOR_RED, COLOR_DEFAULT, 0), \
586 LINE(FILENAME, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
587 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
588 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
589 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
590 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
591 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
592 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
593 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
594 LINE(MAIN_REPLACE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
595 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
596 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
597 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
598 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
599 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
600 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
601 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
602 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
603 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
604 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
605 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
606 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
607 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
608 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
609 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
610 LINE(DIFF_STAT, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
611 LINE(PALETTE_0, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
612 LINE(PALETTE_1, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
613 LINE(PALETTE_2, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
614 LINE(PALETTE_3, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
615 LINE(PALETTE_4, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
616 LINE(PALETTE_5, "", COLOR_WHITE, COLOR_DEFAULT, 0), \
617 LINE(PALETTE_6, "", COLOR_RED, COLOR_DEFAULT, 0), \
618 LINE(GRAPH_COMMIT, "", COLOR_BLUE, COLOR_DEFAULT, 0)
619
620 enum line_type {
621 #define LINE(type, line, fg, bg, attr) \
622 LINE_##type
623 LINE_INFO,
624 LINE_NONE
625 #undef LINE
626 };
627
628 struct line_info {
629 const char *name; /* Option name. */
630 int namelen; /* Size of option name. */
631 const char *line; /* The start of line to match. */
632 int linelen; /* Size of string to match. */
633 int fg, bg, attr; /* Color and text attributes for the lines. */
634 int color_pair;
635 };
636
637 static struct line_info line_info[] = {
638 #define LINE(type, line, fg, bg, attr) \
639 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
640 LINE_INFO
641 #undef LINE
642 };
643
644 static struct line_info **color_pair;
645 static size_t color_pairs;
646
647 static struct line_info *custom_color;
648 static size_t custom_colors;
649
650 DEFINE_ALLOCATOR(realloc_custom_color, struct line_info, 8)
651 DEFINE_ALLOCATOR(realloc_color_pair, struct line_info *, 8)
652
653 #define TO_CUSTOM_COLOR_TYPE(type) (LINE_NONE + 1 + (type))
654 #define TO_CUSTOM_COLOR_OFFSET(type) ((type) - LINE_NONE - 1)
655
656 /* Color IDs must be 1 or higher. [GH #15] */
657 #define COLOR_ID(line_type) ((line_type) + 1)
658
659 static enum line_type
660 get_line_type(const char *line)
661 {
662 int linelen = strlen(line);
663 enum line_type type;
664
665 for (type = 0; type < custom_colors; type++)
666 /* Case insensitive search matches Signed-off-by lines better. */
667 if (linelen >= custom_color[type].linelen &&
668 !strncasecmp(custom_color[type].line, line, custom_color[type].linelen))
669 return TO_CUSTOM_COLOR_TYPE(type);
670
671 for (type = 0; type < ARRAY_SIZE(line_info); type++)
672 /* Case insensitive search matches Signed-off-by lines better. */
673 if (linelen >= line_info[type].linelen &&
674 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
675 return type;
676
677 return LINE_DEFAULT;
678 }
679
680 static enum line_type
681 get_line_type_from_ref(const struct ref *ref)
682 {
683 if (ref->head)
684 return LINE_MAIN_HEAD;
685 else if (ref->ltag)
686 return LINE_MAIN_LOCAL_TAG;
687 else if (ref->tag)
688 return LINE_MAIN_TAG;
689 else if (ref->tracked)
690 return LINE_MAIN_TRACKED;
691 else if (ref->remote)
692 return LINE_MAIN_REMOTE;
693 else if (ref->replace)
694 return LINE_MAIN_REPLACE;
695
696 return LINE_MAIN_REF;
697 }
698
699 static inline struct line_info *
700 get_line(enum line_type type)
701 {
702 if (type > LINE_NONE) {
703 assert(TO_CUSTOM_COLOR_OFFSET(type) < custom_colors);
704 return &custom_color[TO_CUSTOM_COLOR_OFFSET(type)];
705 } else {
706 assert(type < ARRAY_SIZE(line_info));
707 return &line_info[type];
708 }
709 }
710
711 static inline int
712 get_line_color(enum line_type type)
713 {
714 return COLOR_ID(get_line(type)->color_pair);
715 }
716
717 static inline int
718 get_line_attr(enum line_type type)
719 {
720 struct line_info *info = get_line(type);
721
722 return COLOR_PAIR(COLOR_ID(info->color_pair)) | info->attr;
723 }
724
725 static struct line_info *
726 get_line_info(const char *name)
727 {
728 size_t namelen = strlen(name);
729 enum line_type type;
730
731 for (type = 0; type < ARRAY_SIZE(line_info); type++)
732 if (enum_equals(line_info[type], name, namelen))
733 return &line_info[type];
734
735 return NULL;
736 }
737
738 static struct line_info *
739 add_custom_color(const char *quoted_line)
740 {
741 struct line_info *info;
742 char *line;
743 size_t linelen;
744
745 if (!realloc_custom_color(&custom_color, custom_colors, 1))
746 die("Failed to alloc custom line info");
747
748 linelen = strlen(quoted_line) - 1;
749 line = malloc(linelen);
750 if (!line)
751 return NULL;
752
753 strncpy(line, quoted_line + 1, linelen);
754 line[linelen - 1] = 0;
755
756 info = &custom_color[custom_colors++];
757 info->name = info->line = line;
758 info->namelen = info->linelen = strlen(line);
759
760 return info;
761 }
762
763 static void
764 init_line_info_color_pair(struct line_info *info, enum line_type type,
765 int default_bg, int default_fg)
766 {
767 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
768 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
769 int i;
770
771 for (i = 0; i < color_pairs; i++) {
772 if (color_pair[i]->fg == info->fg && color_pair[i]->bg == info->bg) {
773 info->color_pair = i;
774 return;
775 }
776 }
777
778 if (!realloc_color_pair(&color_pair, color_pairs, 1))
779 die("Failed to alloc color pair");
780
781 color_pair[color_pairs] = info;
782 info->color_pair = color_pairs++;
783 init_pair(COLOR_ID(info->color_pair), fg, bg);
784 }
785
786 static void
787 init_colors(void)
788 {
789 int default_bg = line_info[LINE_DEFAULT].bg;
790 int default_fg = line_info[LINE_DEFAULT].fg;
791 enum line_type type;
792
793 start_color();
794
795 if (assume_default_colors(default_fg, default_bg) == ERR) {
796 default_bg = COLOR_BLACK;
797 default_fg = COLOR_WHITE;
798 }
799
800 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
801 struct line_info *info = &line_info[type];
802
803 init_line_info_color_pair(info, type, default_bg, default_fg);
804 }
805
806 for (type = 0; type < custom_colors; type++) {
807 struct line_info *info = &custom_color[type];
808
809 init_line_info_color_pair(info, TO_CUSTOM_COLOR_TYPE(type),
810 default_bg, default_fg);
811 }
812 }
813
814 struct line {
815 enum line_type type;
816 unsigned int lineno:24;
817
818 /* State flags */
819 unsigned int selected:1;
820 unsigned int dirty:1;
821 unsigned int cleareol:1;
822 unsigned int dont_free:1;
823 unsigned int wrapped:1;
824
825 unsigned int user_flags:6;
826 void *data; /* User data */
827 };
828
829
830 /*
831 * Keys
832 */
833
834 struct keybinding {
835 int alias;
836 enum request request;
837 };
838
839 static struct keybinding default_keybindings[] = {
840 /* View switching */
841 { 'm', REQ_VIEW_MAIN },
842 { 'd', REQ_VIEW_DIFF },
843 { 'l', REQ_VIEW_LOG },
844 { 't', REQ_VIEW_TREE },
845 { 'f', REQ_VIEW_BLOB },
846 { 'B', REQ_VIEW_BLAME },
847 { 'H', REQ_VIEW_BRANCH },
848 { 'p', REQ_VIEW_PAGER },
849 { 'h', REQ_VIEW_HELP },
850 { 'S', REQ_VIEW_STATUS },
851 { 'c', REQ_VIEW_STAGE },
852
853 /* View manipulation */
854 { 'q', REQ_VIEW_CLOSE },
855 { KEY_TAB, REQ_VIEW_NEXT },
856 { KEY_RETURN, REQ_ENTER },
857 { KEY_UP, REQ_PREVIOUS },
858 { KEY_CTL('P'), REQ_PREVIOUS },
859 { KEY_DOWN, REQ_NEXT },
860 { KEY_CTL('N'), REQ_NEXT },
861 { 'R', REQ_REFRESH },
862 { KEY_F(5), REQ_REFRESH },
863 { 'O', REQ_MAXIMIZE },
864 { ',', REQ_PARENT },
865
866 /* View specific */
867 { 'u', REQ_STATUS_UPDATE },
868 { '!', REQ_STATUS_REVERT },
869 { 'M', REQ_STATUS_MERGE },
870 { '1', REQ_STAGE_UPDATE_LINE },
871 { '@', REQ_STAGE_NEXT },
872 { '[', REQ_DIFF_CONTEXT_DOWN },
873 { ']', REQ_DIFF_CONTEXT_UP },
874
875 /* Cursor navigation */
876 { 'k', REQ_MOVE_UP },
877 { 'j', REQ_MOVE_DOWN },
878 { KEY_HOME, REQ_MOVE_FIRST_LINE },
879 { KEY_END, REQ_MOVE_LAST_LINE },
880 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
881 { KEY_CTL('D'), REQ_MOVE_PAGE_DOWN },
882 { ' ', REQ_MOVE_PAGE_DOWN },
883 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
884 { KEY_CTL('U'), REQ_MOVE_PAGE_UP },
885 { 'b', REQ_MOVE_PAGE_UP },
886 { '-', REQ_MOVE_PAGE_UP },
887
888 /* Scrolling */
889 { '|', REQ_SCROLL_FIRST_COL },
890 { KEY_LEFT, REQ_SCROLL_LEFT },
891 { KEY_RIGHT, REQ_SCROLL_RIGHT },
892 { KEY_IC, REQ_SCROLL_LINE_UP },
893 { KEY_CTL('Y'), REQ_SCROLL_LINE_UP },
894 { KEY_DC, REQ_SCROLL_LINE_DOWN },
895 { KEY_CTL('E'), REQ_SCROLL_LINE_DOWN },
896 { 'w', REQ_SCROLL_PAGE_UP },
897 { 's', REQ_SCROLL_PAGE_DOWN },
898
899 /* Searching */
900 { '/', REQ_SEARCH },
901 { '?', REQ_SEARCH_BACK },
902 { 'n', REQ_FIND_NEXT },
903 { 'N', REQ_FIND_PREV },
904
905 /* Misc */
906 { 'Q', REQ_QUIT },
907 { 'z', REQ_STOP_LOADING },
908 { 'v', REQ_SHOW_VERSION },
909 { 'r', REQ_SCREEN_REDRAW },
910 { KEY_CTL('L'), REQ_SCREEN_REDRAW },
911 { 'o', REQ_OPTIONS },
912 { '.', REQ_TOGGLE_LINENO },
913 { 'D', REQ_TOGGLE_DATE },
914 { 'A', REQ_TOGGLE_AUTHOR },
915 { 'g', REQ_TOGGLE_REV_GRAPH },
916 { '~', REQ_TOGGLE_GRAPHIC },
917 { '#', REQ_TOGGLE_FILENAME },
918 { 'F', REQ_TOGGLE_REFS },
919 { 'I', REQ_TOGGLE_SORT_ORDER },
920 { 'i', REQ_TOGGLE_SORT_FIELD },
921 { 'W', REQ_TOGGLE_IGNORE_SPACE },
922 { 'X', REQ_TOGGLE_ID },
923 { '%', REQ_TOGGLE_FILES },
924 { '$', REQ_TOGGLE_TITLE_OVERFLOW },
925 { ':', REQ_PROMPT },
926 { 'e', REQ_EDIT },
927 };
928
929 struct keymap {
930 const char *name;
931 struct keymap *next;
932 struct keybinding *data;
933 size_t size;
934 bool hidden;
935 };
936
937 static struct keymap generic_keymap = { "generic" };
938 #define is_generic_keymap(keymap) ((keymap) == &generic_keymap)
939
940 static struct keymap *keymaps = &generic_keymap;
941
942 static void
943 add_keymap(struct keymap *keymap)
944 {
945 keymap->next = keymaps;
946 keymaps = keymap;
947 }
948
949 static struct keymap *
950 get_keymap(const char *name)
951 {
952 struct keymap *keymap = keymaps;
953
954 while (keymap) {
955 if (!strcasecmp(keymap->name, name))
956 return keymap;
957 keymap = keymap->next;
958 }
959
960 return NULL;
961 }
962
963
964 static void
965 add_keybinding(struct keymap *table, enum request request, int key)
966 {
967 size_t i;
968
969 for (i = 0; i < table->size; i++) {
970 if (table->data[i].alias == key) {
971 table->data[i].request = request;
972 return;
973 }
974 }
975
976 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
977 if (!table->data)
978 die("Failed to allocate keybinding");
979 table->data[table->size].alias = key;
980 table->data[table->size++].request = request;
981
982 if (request == REQ_NONE && is_generic_keymap(table)) {
983 int i;
984
985 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
986 if (default_keybindings[i].alias == key)
987 default_keybindings[i].request = REQ_NONE;
988 }
989 }
990
991 /* Looks for a key binding first in the given map, then in the generic map, and
992 * lastly in the default keybindings. */
993 static enum request
994 get_keybinding(struct keymap *keymap, int key)
995 {
996 size_t i;
997
998 for (i = 0; i < keymap->size; i++)
999 if (keymap->data[i].alias == key)
1000 return keymap->data[i].request;
1001
1002 for (i = 0; i < generic_keymap.size; i++)
1003 if (generic_keymap.data[i].alias == key)
1004 return generic_keymap.data[i].request;
1005
1006 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1007 if (default_keybindings[i].alias == key)
1008 return default_keybindings[i].request;
1009
1010 return (enum request) key;
1011 }
1012
1013
1014 struct key {
1015 const char *name;
1016 int value;
1017 };
1018
1019 static const struct key key_table[] = {
1020 { "Enter", KEY_RETURN },
1021 { "Space", ' ' },
1022 { "Backspace", KEY_BACKSPACE },
1023 { "Tab", KEY_TAB },
1024 { "Escape", KEY_ESC },
1025 { "Left", KEY_LEFT },
1026 { "Right", KEY_RIGHT },
1027 { "Up", KEY_UP },
1028 { "Down", KEY_DOWN },
1029 { "Insert", KEY_IC },
1030 { "Delete", KEY_DC },
1031 { "Hash", '#' },
1032 { "Home", KEY_HOME },
1033 { "End", KEY_END },
1034 { "PageUp", KEY_PPAGE },
1035 { "PageDown", KEY_NPAGE },
1036 { "F1", KEY_F(1) },
1037 { "F2", KEY_F(2) },
1038 { "F3", KEY_F(3) },
1039 { "F4", KEY_F(4) },
1040 { "F5", KEY_F(5) },
1041 { "F6", KEY_F(6) },
1042 { "F7", KEY_F(7) },
1043 { "F8", KEY_F(8) },
1044 { "F9", KEY_F(9) },
1045 { "F10", KEY_F(10) },
1046 { "F11", KEY_F(11) },
1047 { "F12", KEY_F(12) },
1048 };
1049
1050 static int
1051 get_key_value(const char *name)
1052 {
1053 int i;
1054
1055 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1056 if (!strcasecmp(key_table[i].name, name))
1057 return key_table[i].value;
1058
1059 if (strlen(name) == 3 && name[0] == '^' && name[1] == '[' && isprint(*name))
1060 return (int)name[2] + 0x80;
1061 if (strlen(name) == 2 && name[0] == '^' && isprint(*name))
1062 return (int)name[1] & 0x1f;
1063 if (strlen(name) == 1 && isprint(*name))
1064 return (int) *name;
1065 return ERR;
1066 }
1067
1068 static const char *
1069 get_key_name(int key_value)
1070 {
1071 static char key_char[] = "'X'\0";
1072 const char *seq = NULL;
1073 int key;
1074
1075 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1076 if (key_table[key].value == key_value)
1077 seq = key_table[key].name;
1078
1079 if (seq == NULL && key_value < 0x7f) {
1080 char *s = key_char + 1;
1081
1082 if (key_value >= 0x20) {
1083 *s++ = key_value;
1084 } else {
1085 *s++ = '^';
1086 *s++ = 0x40 | (key_value & 0x1f);
1087 }
1088 *s++ = '\'';
1089 *s++ = '\0';
1090 seq = key_char;
1091 }
1092
1093 return seq ? seq : "(no key)";
1094 }
1095
1096 static bool
1097 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
1098 {
1099 const char *sep = *pos > 0 ? ", " : "";
1100 const char *keyname = get_key_name(keybinding->alias);
1101
1102 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
1103 }
1104
1105 static bool
1106 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
1107 struct keymap *keymap, bool all)
1108 {
1109 int i;
1110
1111 for (i = 0; i < keymap->size; i++) {
1112 if (keymap->data[i].request == request) {
1113 if (!append_key(buf, pos, &keymap->data[i]))
1114 return FALSE;
1115 if (!all)
1116 break;
1117 }
1118 }
1119
1120 return TRUE;
1121 }
1122
1123 #define get_view_key(view, request) get_keys(&(view)->ops->keymap, request, FALSE)
1124
1125 static const char *
1126 get_keys(struct keymap *keymap, enum request request, bool all)
1127 {
1128 static char buf[BUFSIZ];
1129 size_t pos = 0;
1130 int i;
1131
1132 buf[pos] = 0;
1133
1134 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
1135 return "Too many keybindings!";
1136 if (pos > 0 && !all)
1137 return buf;
1138
1139 if (!is_generic_keymap(keymap)) {
1140 /* Only the generic keymap includes the default keybindings when
1141 * listing all keys. */
1142 if (all)
1143 return buf;
1144
1145 if (!append_keymap_request_keys(buf, &pos, request, &generic_keymap, all))
1146 return "Too many keybindings!";
1147 if (pos)
1148 return buf;
1149 }
1150
1151 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1152 if (default_keybindings[i].request == request) {
1153 if (!append_key(buf, &pos, &default_keybindings[i]))
1154 return "Too many keybindings!";
1155 if (!all)
1156 return buf;
1157 }
1158 }
1159
1160 return buf;
1161 }
1162
1163 enum run_request_flag {
1164 RUN_REQUEST_DEFAULT = 0,
1165 RUN_REQUEST_FORCE = 1,
1166 RUN_REQUEST_SILENT = 2,
1167 RUN_REQUEST_CONFIRM = 4,
1168 RUN_REQUEST_EXIT = 8,
1169 RUN_REQUEST_INTERNAL = 16,
1170 };
1171
1172 struct run_request {
1173 struct keymap *keymap;
1174 int key;
1175 const char **argv;
1176 bool silent;
1177 bool confirm;
1178 bool exit;
1179 bool internal;
1180 };
1181
1182 static struct run_request *run_request;
1183 static size_t run_requests;
1184
1185 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
1186
1187 static bool
1188 add_run_request(struct keymap *keymap, int key, const char **argv, enum run_request_flag flags)
1189 {
1190 bool force = flags & RUN_REQUEST_FORCE;
1191 struct run_request *req;
1192
1193 if (!force && get_keybinding(keymap, key) != key)
1194 return TRUE;
1195
1196 if (!realloc_run_requests(&run_request, run_requests, 1))
1197 return FALSE;
1198
1199 if (!argv_copy(&run_request[run_requests].argv, argv))
1200 return FALSE;
1201
1202 req = &run_request[run_requests++];
1203 req->silent = flags & RUN_REQUEST_SILENT;
1204 req->confirm = flags & RUN_REQUEST_CONFIRM;
1205 req->exit = flags & RUN_REQUEST_EXIT;
1206 req->internal = flags & RUN_REQUEST_INTERNAL;
1207 req->keymap = keymap;
1208 req->key = key;
1209
1210 add_keybinding(keymap, REQ_NONE + run_requests, key);
1211 return TRUE;
1212 }
1213
1214 static struct run_request *
1215 get_run_request(enum request request)
1216 {
1217 if (request <= REQ_NONE || request > REQ_NONE + run_requests)
1218 return NULL;
1219 return &run_request[request - REQ_NONE - 1];
1220 }
1221
1222 static void
1223 add_builtin_run_requests(void)
1224 {
1225 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1226 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
1227 const char *commit[] = { "git", "commit", NULL };
1228 const char *gc[] = { "git", "gc", NULL };
1229
1230 add_run_request(get_keymap("main"), 'C', cherry_pick, RUN_REQUEST_CONFIRM);
1231 add_run_request(get_keymap("status"), 'C', commit, RUN_REQUEST_DEFAULT);
1232 add_run_request(get_keymap("branch"), 'C', checkout, RUN_REQUEST_CONFIRM);
1233 add_run_request(get_keymap("generic"), 'G', gc, RUN_REQUEST_CONFIRM);
1234 }
1235
1236 /*
1237 * User config file handling.
1238 */
1239
1240 #define OPT_ERR_INFO \
1241 OPT_ERR_(INTEGER_VALUE_OUT_OF_BOUND, "Integer value out of bound"), \
1242 OPT_ERR_(INVALID_STEP_VALUE, "Invalid step value"), \
1243 OPT_ERR_(NO_OPTION_VALUE, "No option value"), \
1244 OPT_ERR_(NO_VALUE_ASSIGNED, "No value assigned"), \
1245 OPT_ERR_(OBSOLETE_REQUEST_NAME, "Obsolete request name"), \
1246 OPT_ERR_(OUT_OF_MEMORY, "Out of memory"), \
1247 OPT_ERR_(TOO_MANY_OPTION_ARGUMENTS, "Too many option arguments"), \
1248 OPT_ERR_(FILE_DOES_NOT_EXIST, "File does not exist"), \
1249 OPT_ERR_(UNKNOWN_ATTRIBUTE, "Unknown attribute"), \
1250 OPT_ERR_(UNKNOWN_COLOR, "Unknown color"), \
1251 OPT_ERR_(UNKNOWN_COLOR_NAME, "Unknown color name"), \
1252 OPT_ERR_(UNKNOWN_KEY, "Unknown key"), \
1253 OPT_ERR_(UNKNOWN_KEY_MAP, "Unknown key map"), \
1254 OPT_ERR_(UNKNOWN_OPTION_COMMAND, "Unknown option command"), \
1255 OPT_ERR_(UNKNOWN_REQUEST_NAME, "Unknown request name"), \
1256 OPT_ERR_(UNKNOWN_VARIABLE_NAME, "Unknown variable name"), \
1257 OPT_ERR_(UNMATCHED_QUOTATION, "Unmatched quotation"), \
1258 OPT_ERR_(WRONG_NUMBER_OF_ARGUMENTS, "Wrong number of arguments"),
1259
1260 enum option_code {
1261 #define OPT_ERR_(name, msg) OPT_ERR_ ## name
1262 OPT_ERR_INFO
1263 #undef OPT_ERR_
1264 OPT_OK
1265 };
1266
1267 static const char *option_errors[] = {
1268 #define OPT_ERR_(name, msg) msg
1269 OPT_ERR_INFO
1270 #undef OPT_ERR_
1271 };
1272
1273 static const struct enum_map color_map[] = {
1274 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
1275 COLOR_MAP(DEFAULT),
1276 COLOR_MAP(BLACK),
1277 COLOR_MAP(BLUE),
1278 COLOR_MAP(CYAN),
1279 COLOR_MAP(GREEN),
1280 COLOR_MAP(MAGENTA),
1281 COLOR_MAP(RED),
1282 COLOR_MAP(WHITE),
1283 COLOR_MAP(YELLOW),
1284 };
1285
1286 static const struct enum_map attr_map[] = {
1287 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
1288 ATTR_MAP(NORMAL),
1289 ATTR_MAP(BLINK),
1290 ATTR_MAP(BOLD),
1291 ATTR_MAP(DIM),
1292 ATTR_MAP(REVERSE),
1293 ATTR_MAP(STANDOUT),
1294 ATTR_MAP(UNDERLINE),
1295 };
1296
1297 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
1298
1299 static enum option_code
1300 parse_step(double *opt, const char *arg)
1301 {
1302 *opt = atoi(arg);
1303 if (!strchr(arg, '%'))
1304 return OPT_OK;
1305
1306 /* "Shift down" so 100% and 1 does not conflict. */
1307 *opt = (*opt - 1) / 100;
1308 if (*opt >= 1.0) {
1309 *opt = 0.99;
1310 return OPT_ERR_INVALID_STEP_VALUE;
1311 }
1312 if (*opt < 0.0) {
1313 *opt = 1;
1314 return OPT_ERR_INVALID_STEP_VALUE;
1315 }
1316 return OPT_OK;
1317 }
1318
1319 static enum option_code
1320 parse_int(int *opt, const char *arg, int min, int max)
1321 {
1322 int value = atoi(arg);
1323
1324 if (min <= value && value <= max) {
1325 *opt = value;
1326 return OPT_OK;
1327 }
1328
1329 return OPT_ERR_INTEGER_VALUE_OUT_OF_BOUND;
1330 }
1331
1332 #define parse_id(opt, arg) \
1333 parse_int(opt, arg, 4, SIZEOF_REV - 1)
1334
1335 static bool
1336 set_color(int *color, const char *name)
1337 {
1338 if (map_enum(color, color_map, name))
1339 return TRUE;
1340 if (!prefixcmp(name, "color"))
1341 return parse_int(color, name + 5, 0, 255) == OPT_OK;
1342 /* Used when reading git colors. Git expects a plain int w/o prefix. */
1343 return parse_int(color, name, 0, 255) == OPT_OK;
1344 }
1345
1346 /* Wants: object fgcolor bgcolor [attribute] */
1347 static enum option_code
1348 option_color_command(int argc, const char *argv[])
1349 {
1350 struct line_info *info;
1351
1352 if (argc < 3)
1353 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1354
1355 if (*argv[0] == '"' || *argv[0] == '\'') {
1356 info = add_custom_color(argv[0]);
1357 } else {
1358 info = get_line_info(argv[0]);
1359 }
1360 if (!info) {
1361 static const struct enum_map obsolete[] = {
1362 ENUM_MAP("main-delim", LINE_DELIMITER),
1363 ENUM_MAP("main-date", LINE_DATE),
1364 ENUM_MAP("main-author", LINE_AUTHOR),
1365 ENUM_MAP("blame-id", LINE_ID),
1366 };
1367 int index;
1368
1369 if (!map_enum(&index, obsolete, argv[0]))
1370 return OPT_ERR_UNKNOWN_COLOR_NAME;
1371 info = &line_info[index];
1372 }
1373
1374 if (!set_color(&info->fg, argv[1]) ||
1375 !set_color(&info->bg, argv[2]))
1376 return OPT_ERR_UNKNOWN_COLOR;
1377
1378 info->attr = 0;
1379 while (argc-- > 3) {
1380 int attr;
1381
1382 if (!set_attribute(&attr, argv[argc]))
1383 return OPT_ERR_UNKNOWN_ATTRIBUTE;
1384 info->attr |= attr;
1385 }
1386
1387 return OPT_OK;
1388 }
1389
1390 static enum option_code
1391 parse_bool_matched(bool *opt, const char *arg, bool *matched)
1392 {
1393 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1394 ? TRUE : FALSE;
1395 if (matched)
1396 *matched = *opt || (!strcmp(arg, "0") || !strcmp(arg, "false") || !strcmp(arg, "no"));
1397 return OPT_OK;
1398 }
1399
1400 #define parse_bool(opt, arg) parse_bool_matched(opt, arg, NULL)
1401
1402 static enum option_code
1403 parse_enum_do(unsigned int *opt, const char *arg,
1404 const struct enum_map *map, size_t map_size)
1405 {
1406 bool is_true;
1407
1408 assert(map_size > 1);
1409
1410 if (map_enum_do(map, map_size, (int *) opt, arg))
1411 return OPT_OK;
1412
1413 parse_bool(&is_true, arg);
1414 *opt = is_true ? map[1].value : map[0].value;
1415 return OPT_OK;
1416 }
1417
1418 #define parse_enum(opt, arg, map) \
1419 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1420
1421 static enum option_code
1422 parse_string(char *opt, const char *arg, size_t optsize)
1423 {
1424 int arglen = strlen(arg);
1425
1426 switch (arg[0]) {
1427 case '\"':
1428 case '\'':
1429 if (arglen == 1 || arg[arglen - 1] != arg[0])
1430 return OPT_ERR_UNMATCHED_QUOTATION;
1431 arg += 1; arglen -= 2;
1432 default:
1433 string_ncopy_do(opt, optsize, arg, arglen);
1434 return OPT_OK;
1435 }
1436 }
1437
1438 static enum option_code
1439 parse_encoding(struct encoding **encoding_ref, const char *arg, bool priority)
1440 {
1441 char buf[SIZEOF_STR];
1442 enum option_code code = parse_string(buf, arg, sizeof(buf));
1443
1444 if (code == OPT_OK) {
1445 struct encoding *encoding = *encoding_ref;
1446
1447 if (encoding && !priority)
1448 return code;
1449 encoding = encoding_open(buf);
1450 if (encoding)
1451 *encoding_ref = encoding;
1452 }
1453
1454 return code;
1455 }
1456
1457 static enum option_code
1458 parse_args(const char ***args, const char *argv[])
1459 {
1460 if (!argv_copy(args, argv))
1461 return OPT_ERR_OUT_OF_MEMORY;
1462 return OPT_OK;
1463 }
1464
1465 /* Wants: name = value */
1466 static enum option_code
1467 option_set_command(int argc, const char *argv[])
1468 {
1469 if (argc < 3)
1470 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1471
1472 if (strcmp(argv[1], "="))
1473 return OPT_ERR_NO_VALUE_ASSIGNED;
1474
1475 if (!strcmp(argv[0], "blame-options"))
1476 return parse_args(&opt_blame_argv, argv + 2);
1477
1478 if (!strcmp(argv[0], "diff-options"))
1479 return parse_args(&opt_diff_argv, argv + 2);
1480
1481 if (argc != 3)
1482 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1483
1484 if (!strcmp(argv[0], "show-author"))
1485 return parse_enum(&opt_author, argv[2], author_map);
1486
1487 if (!strcmp(argv[0], "show-date"))
1488 return parse_enum(&opt_date, argv[2], date_map);
1489
1490 if (!strcmp(argv[0], "show-rev-graph"))
1491 return parse_bool(&opt_rev_graph, argv[2]);
1492
1493 if (!strcmp(argv[0], "show-refs"))
1494 return parse_bool(&opt_show_refs, argv[2]);
1495
1496 if (!strcmp(argv[0], "show-changes"))
1497 return parse_bool(&opt_show_changes, argv[2]);
1498
1499 if (!strcmp(argv[0], "show-notes")) {
1500 bool matched = FALSE;
1501 enum option_code res = parse_bool_matched(&opt_notes, argv[2], &matched);
1502
1503 if (res == OPT_OK && matched) {
1504 update_notes_arg();
1505 return res;
1506 }
1507
1508 opt_notes = TRUE;
1509 strcpy(opt_notes_arg, "--show-notes=");
1510 res = parse_string(opt_notes_arg + 8, argv[2],
1511 sizeof(opt_notes_arg) - 8);
1512 if (res == OPT_OK && opt_notes_arg[8] == '\0')
1513 opt_notes_arg[7] = '\0';
1514 return res;
1515 }
1516
1517 if (!strcmp(argv[0], "show-line-numbers"))
1518 return parse_bool(&opt_line_number, argv[2]);
1519
1520 if (!strcmp(argv[0], "line-graphics"))
1521 return parse_enum(&opt_line_graphics, argv[2], graphic_map);
1522
1523 if (!strcmp(argv[0], "line-number-interval"))
1524 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1525
1526 if (!strcmp(argv[0], "author-width"))
1527 return parse_int(&opt_author_width, argv[2], 0, 1024);
1528
1529 if (!strcmp(argv[0], "filename-width"))
1530 return parse_int(&opt_filename_width, argv[2], 0, 1024);
1531
1532 if (!strcmp(argv[0], "show-filename"))
1533 return parse_enum(&opt_filename, argv[2], filename_map);
1534
1535 if (!strcmp(argv[0], "horizontal-scroll"))
1536 return parse_step(&opt_hscroll, argv[2]);
1537
1538 if (!strcmp(argv[0], "split-view-height"))
1539 return parse_step(&opt_scale_split_view, argv[2]);
1540
1541 if (!strcmp(argv[0], "vertical-split"))
1542 return parse_bool(&opt_vsplit, argv[2]);
1543
1544 if (!strcmp(argv[0], "tab-size"))
1545 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1546
1547 if (!strcmp(argv[0], "diff-context")) {
1548 enum option_code code = parse_int(&opt_diff_context, argv[2], 0, 999999);
1549
1550 if (code == OPT_OK)
1551 update_diff_context_arg(opt_diff_context);
1552 return code;
1553 }
1554
1555 if (!strcmp(argv[0], "ignore-space")) {
1556 enum option_code code = parse_enum(&opt_ignore_space, argv[2], ignore_space_map);
1557
1558 if (code == OPT_OK)
1559 update_ignore_space_arg();
1560 return code;
1561 }
1562
1563 if (!strcmp(argv[0], "commit-order")) {
1564 enum option_code code = parse_enum(&opt_commit_order, argv[2], commit_order_map);
1565
1566 if (code == OPT_OK)
1567 update_commit_order_arg();
1568 return code;
1569 }
1570
1571 if (!strcmp(argv[0], "status-untracked-dirs"))
1572 return parse_bool(&opt_untracked_dirs_content, argv[2]);
1573
1574 if (!strcmp(argv[0], "read-git-colors"))
1575 return parse_bool(&opt_read_git_colors, argv[2]);
1576
1577 if (!strcmp(argv[0], "ignore-case"))
1578 return parse_bool(&opt_ignore_case, argv[2]);
1579
1580 if (!strcmp(argv[0], "focus-child"))
1581 return parse_bool(&opt_focus_child, argv[2]);
1582
1583 if (!strcmp(argv[0], "wrap-lines"))
1584 return parse_bool(&opt_wrap_lines, argv[2]);
1585
1586 if (!strcmp(argv[0], "show-id"))
1587 return parse_bool(&opt_show_id, argv[2]);
1588
1589 if (!strcmp(argv[0], "id-width"))
1590 return parse_id(&opt_id_cols, argv[2]);
1591
1592 if (!strcmp(argv[0], "title-overflow")) {
1593 bool matched;
1594 enum option_code code;
1595
1596 /*
1597 * "title-overflow" is considered a boolint.
1598 * We try to parse it as a boolean (and set the value to 50 if true),
1599 * otherwise we parse it as an integer and use the given value.
1600 */
1601 code = parse_bool_matched(&opt_show_title_overflow, argv[2], &matched);
1602 if (code == OPT_OK && matched) {
1603 if (opt_show_title_overflow)
1604 opt_title_overflow = 50;
1605 } else {
1606 code = parse_int(&opt_title_overflow, argv[2], 2, 1024);
1607 if (code == OPT_OK)
1608 opt_show_title_overflow = TRUE;
1609 }
1610
1611 return code;
1612 }
1613
1614 if (!strcmp(argv[0], "editor-line-number"))
1615 return parse_bool(&opt_editor_lineno, argv[2]);
1616
1617 return OPT_ERR_UNKNOWN_VARIABLE_NAME;
1618 }
1619
1620 /* Wants: mode request key */
1621 static enum option_code
1622 option_bind_command(int argc, const char *argv[])
1623 {
1624 enum request request;
1625 struct keymap *keymap;
1626 int key;
1627
1628 if (argc < 3)
1629 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1630
1631 if (!(keymap = get_keymap(argv[0])))
1632 return OPT_ERR_UNKNOWN_KEY_MAP;
1633
1634 key = get_key_value(argv[1]);
1635 if (key == ERR)
1636 return OPT_ERR_UNKNOWN_KEY;
1637
1638 request = get_request(argv[2]);
1639 if (request == REQ_UNKNOWN) {
1640 static const struct enum_map obsolete[] = {
1641 ENUM_MAP("cherry-pick", REQ_NONE),
1642 ENUM_MAP("screen-resize", REQ_NONE),
1643 ENUM_MAP("tree-parent", REQ_PARENT),
1644 };
1645 int alias;
1646
1647 if (map_enum(&alias, obsolete, argv[2])) {
1648 if (alias != REQ_NONE)
1649 add_keybinding(keymap, alias, key);
1650 return OPT_ERR_OBSOLETE_REQUEST_NAME;
1651 }
1652 }
1653
1654 if (request == REQ_UNKNOWN) {
1655 char first = *argv[2]++;
1656
1657 if (first == '!') {
1658 enum run_request_flag flags = RUN_REQUEST_FORCE;
1659
1660 while (*argv[2]) {
1661 if (*argv[2] == '@') {
1662 flags |= RUN_REQUEST_SILENT;
1663 } else if (*argv[2] == '?') {
1664 flags |= RUN_REQUEST_CONFIRM;
1665 } else if (*argv[2] == '<') {
1666 flags |= RUN_REQUEST_EXIT;
1667 } else {
1668 break;
1669 }
1670 argv[2]++;
1671 }
1672
1673 return add_run_request(keymap, key, argv + 2, flags)
1674 ? OPT_OK : OPT_ERR_OUT_OF_MEMORY;
1675 } else if (first == ':') {
1676 return add_run_request(keymap, key, argv + 2, RUN_REQUEST_FORCE | RUN_REQUEST_INTERNAL)
1677 ? OPT_OK : OPT_ERR_OUT_OF_MEMORY;
1678 } else {
1679 return OPT_ERR_UNKNOWN_REQUEST_NAME;
1680 }
1681 }
1682
1683 add_keybinding(keymap, request, key);
1684
1685 return OPT_OK;
1686 }
1687
1688
1689 static enum option_code load_option_file(const char *path);
1690
1691 static enum option_code
1692 option_source_command(int argc, const char *argv[])
1693 {
1694 if (argc < 1)
1695 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1696
1697 return load_option_file(argv[0]);
1698 }
1699
1700 static enum option_code
1701 set_option(const char *opt, char *value)
1702 {
1703 const char *argv[SIZEOF_ARG];
1704 int argc = 0;
1705
1706 if (!argv_from_string(argv, &argc, value))
1707 return OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
1708
1709 if (!strcmp(opt, "color"))
1710 return option_color_command(argc, argv);
1711
1712 if (!strcmp(opt, "set"))
1713 return option_set_command(argc, argv);
1714
1715 if (!strcmp(opt, "bind"))
1716 return option_bind_command(argc, argv);
1717
1718 if (!strcmp(opt, "source"))
1719 return option_source_command(argc, argv);
1720
1721 return OPT_ERR_UNKNOWN_OPTION_COMMAND;
1722 }
1723
1724 struct config_state {
1725 const char *path;
1726 int lineno;
1727 bool errors;
1728 };
1729
1730 static int
1731 read_option(char *opt, size_t optlen, char *value, size_t valuelen, void *data)
1732 {
1733 struct config_state *config = data;
1734 enum option_code status = OPT_ERR_NO_OPTION_VALUE;
1735
1736 config->lineno++;
1737
1738 /* Check for comment markers, since read_properties() will
1739 * only ensure opt and value are split at first " \t". */
1740 optlen = strcspn(opt, "#");
1741 if (optlen == 0)
1742 return OK;
1743
1744 if (opt[optlen] == 0) {
1745 /* Look for comment endings in the value. */
1746 size_t len = strcspn(value, "#");
1747
1748 if (len < valuelen) {
1749 valuelen = len;
1750 value[valuelen] = 0;
1751 }
1752
1753 status = set_option(opt, value);
1754 }
1755
1756 if (status != OPT_OK) {
1757 warn("%s line %d: %s near '%.*s'", config->path, config->lineno,
1758 option_errors[status], (int) optlen, opt);
1759 config->errors = TRUE;
1760 }
1761
1762 /* Always keep going if errors are encountered. */
1763 return OK;
1764 }
1765
1766 static enum option_code
1767 load_option_file(const char *path)
1768 {
1769 struct config_state config = { path, 0, FALSE };
1770 struct io io;
1771
1772 /* Do not read configuration from stdin if set to "" */
1773 if (!path || !strlen(path))
1774 return OPT_OK;
1775
1776 /* It's OK that the file doesn't exist. */
1777 if (!io_open(&io, "%s", path))
1778 return OPT_ERR_FILE_DOES_NOT_EXIST;
1779
1780 if (io_load(&io, " \t", read_option, &config) == ERR ||
1781 config.errors == TRUE)
1782 warn("Errors while loading %s.", path);
1783 return OPT_OK;
1784 }
1785
1786 static int
1787 load_options(void)
1788 {
1789 const char *home = getenv("HOME");
1790 const char *tigrc_user = getenv("TIGRC_USER");
1791 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1792 const char *tig_diff_opts = getenv("TIG_DIFF_OPTS");
1793 const bool diff_opts_from_args = !!opt_diff_argv;
1794 char buf[SIZEOF_STR];
1795
1796 if (!tigrc_system)
1797 tigrc_system = SYSCONFDIR "/tigrc";
1798 load_option_file(tigrc_system);
1799
1800 if (!tigrc_user) {
1801 if (!home || !string_format(buf, "%s/.tigrc", home))
1802 return ERR;
1803 tigrc_user = buf;
1804 }
1805 load_option_file(tigrc_user);
1806
1807 /* Add _after_ loading config files to avoid adding run requests
1808 * that conflict with keybindings. */
1809 add_builtin_run_requests();
1810
1811 if (!diff_opts_from_args && tig_diff_opts && *tig_diff_opts) {
1812 static const char *diff_opts[SIZEOF_ARG] = { NULL };
1813 int argc = 0;
1814
1815 if (!string_format(buf, "%s", tig_diff_opts) ||
1816 !argv_from_string(diff_opts, &argc, buf))
1817 die("TIG_DIFF_OPTS contains too many arguments");
1818 else if (!argv_copy(&opt_diff_argv, diff_opts))
1819 die("Failed to format TIG_DIFF_OPTS arguments");
1820 }
1821
1822 return OK;
1823 }
1824
1825
1826 /*
1827 * The viewer
1828 */
1829
1830 struct view;
1831 struct view_ops;
1832
1833 /* The display array of active views and the index of the current view. */
1834 static struct view *display[2];
1835 static WINDOW *display_win[2];
1836 static WINDOW *display_title[2];
1837 static WINDOW *display_sep;
1838
1839 static unsigned int current_view;
1840
1841 #define foreach_displayed_view(view, i) \
1842 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1843
1844 #define displayed_views() (display[1] != NULL ? 2 : 1)
1845
1846 /* Current head and commit ID */
1847 static char ref_blob[SIZEOF_REF] = "";
1848 static char ref_commit[SIZEOF_REF] = "HEAD";
1849 static char ref_head[SIZEOF_REF] = "HEAD";
1850 static char ref_branch[SIZEOF_REF] = "";
1851 static char ref_status[SIZEOF_STR] = "";
1852
1853 enum view_flag {
1854 VIEW_NO_FLAGS = 0,
1855 VIEW_ALWAYS_LINENO = 1 << 0,
1856 VIEW_CUSTOM_STATUS = 1 << 1,
1857 VIEW_ADD_DESCRIBE_REF = 1 << 2,
1858 VIEW_ADD_PAGER_REFS = 1 << 3,
1859 VIEW_OPEN_DIFF = 1 << 4,
1860 VIEW_NO_REF = 1 << 5,
1861 VIEW_NO_GIT_DIR = 1 << 6,
1862 VIEW_DIFF_LIKE = 1 << 7,
1863 VIEW_STDIN = 1 << 8,
1864 VIEW_SEND_CHILD_ENTER = 1 << 9,
1865 VIEW_FILE_FILTER = 1 << 10,
1866 };
1867
1868 #define view_has_flags(view, flag) ((view)->ops->flags & (flag))
1869
1870 struct position {
1871 unsigned long offset; /* Offset of the window top */
1872 unsigned long col; /* Offset from the window side. */
1873 unsigned long lineno; /* Current line number */
1874 };
1875
1876 struct view {
1877 const char *name; /* View name */
1878 const char *id; /* Points to either of ref_{head,commit,blob} */
1879
1880 struct view_ops *ops; /* View operations */
1881
1882 char ref[SIZEOF_REF]; /* Hovered commit reference */
1883 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1884
1885 int height, width; /* The width and height of the main window */
1886 WINDOW *win; /* The main window */
1887
1888 /* Navigation */
1889 struct position pos; /* Current position. */
1890 struct position prev_pos; /* Previous position. */
1891
1892 /* Searching */
1893 char grep[SIZEOF_STR]; /* Search string */
1894 regex_t *regex; /* Pre-compiled regexp */
1895
1896 /* If non-NULL, points to the view that opened this view. If this view
1897 * is closed tig will switch back to the parent view. */
1898 struct view *parent;
1899 struct view *prev;
1900
1901 /* Buffering */
1902 size_t lines; /* Total number of lines */
1903 struct line *line; /* Line index */
1904 unsigned int digits; /* Number of digits in the lines member. */
1905
1906 /* Number of lines with custom status, not to be counted in the
1907 * view title. */
1908 unsigned int custom_lines;
1909
1910 /* Drawing */
1911 struct line *curline; /* Line currently being drawn. */
1912 enum line_type curtype; /* Attribute currently used for drawing. */
1913 unsigned long col; /* Column when drawing. */
1914 bool has_scrolled; /* View was scrolled. */
1915
1916 /* Loading */
1917 const char **argv; /* Shell command arguments. */
1918 const char *dir; /* Directory from which to execute. */
1919 struct io io;
1920 struct io *pipe;
1921 time_t start_time;
1922 time_t update_secs;
1923 struct encoding *encoding;
1924 bool unrefreshable;
1925
1926 /* Private data */
1927 void *private;
1928 };
1929
1930 enum open_flags {
1931 OPEN_DEFAULT = 0, /* Use default view switching. */
1932 OPEN_SPLIT = 1, /* Split current view. */
1933 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1934 OPEN_REFRESH = 16, /* Refresh view using previous command. */
1935 OPEN_PREPARED = 32, /* Open already prepared command. */
1936 OPEN_EXTRA = 64, /* Open extra data from command. */
1937 };
1938
1939 struct view_ops {
1940 /* What type of content being displayed. Used in the title bar. */
1941 const char *type;
1942 /* What keymap does this view have */
1943 struct keymap keymap;
1944 /* Flags to control the view behavior. */
1945 enum view_flag flags;
1946 /* Size of private data. */
1947 size_t private_size;
1948 /* Open and reads in all view content. */
1949 bool (*open)(struct view *view, enum open_flags flags);
1950 /* Read one line; updates view->line. */
1951 bool (*read)(struct view *view, char *data);
1952 /* Draw one line; @lineno must be < view->height. */
1953 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1954 /* Depending on view handle a special requests. */
1955 enum request (*request)(struct view *view, enum request request, struct line *line);
1956 /* Search for regexp in a line. */
1957 bool (*grep)(struct view *view, struct line *line);
1958 /* Select line */
1959 void (*select)(struct view *view, struct line *line);
1960 };
1961
1962 #define VIEW_OPS(id, name, ref) name##_ops
1963 static struct view_ops VIEW_INFO(VIEW_OPS);
1964
1965 static struct view views[] = {
1966 #define VIEW_DATA(id, name, ref) \
1967 { #name, ref, &name##_ops }
1968 VIEW_INFO(VIEW_DATA)
1969 };
1970
1971 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1972
1973 #define foreach_view(view, i) \
1974 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1975
1976 #define view_is_displayed(view) \
1977 (view == display[0] || view == display[1])
1978
1979 #define view_has_line(view, line_) \
1980 ((view)->line <= (line_) && (line_) < (view)->line + (view)->lines)
1981
1982 static bool
1983 forward_request_to_child(struct view *child, enum request request)
1984 {
1985 return displayed_views() == 2 && view_is_displayed(child) &&
1986 !strcmp(child->vid, child->id);
1987 }
1988
1989 static enum request
1990 view_request(struct view *view, enum request request)
1991 {
1992 if (!view || !view->lines)
1993 return request;
1994
1995 if (request == REQ_ENTER && !opt_focus_child &&
1996 view_has_flags(view, VIEW_SEND_CHILD_ENTER)) {
1997 struct view *child = display[1];
1998
1999 if (forward_request_to_child(child, request)) {
2000 view_request(child, request);
2001 return REQ_NONE;
2002 }
2003 }
2004
2005 if (request == REQ_REFRESH && view->unrefreshable) {
2006 report("This view can not be refreshed");
2007 return REQ_NONE;
2008 }
2009
2010 return view->ops->request(view, request, &view->line[view->pos.lineno]);
2011 }
2012
2013 /*
2014 * View drawing.
2015 */
2016
2017 static inline void
2018 set_view_attr(struct view *view, enum line_type type)
2019 {
2020 if (!view->curline->selected && view->curtype != type) {
2021 (void) wattrset(view->win, get_line_attr(type));
2022 wchgat(view->win, -1, 0, get_line_color(type), NULL);
2023 view->curtype = type;
2024 }
2025 }
2026
2027 #define VIEW_MAX_LEN(view) ((view)->width + (view)->pos.col - (view)->col)
2028
2029 static bool
2030 draw_chars(struct view *view, enum line_type type, const char *string,
2031 int max_len, bool use_tilde)
2032 {
2033 static char out_buffer[BUFSIZ * 2];
2034 int len = 0;
2035 int col = 0;
2036 int trimmed = FALSE;
2037 size_t skip = view->pos.col > view->col ? view->pos.col - view->col : 0;
2038
2039 if (max_len <= 0)
2040 return VIEW_MAX_LEN(view) <= 0;
2041
2042 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
2043
2044 set_view_attr(view, type);
2045 if (len > 0) {
2046 if (opt_iconv_out != ICONV_NONE) {
2047 size_t inlen = len + 1;
2048 char *instr = calloc(1, inlen);
2049 ICONV_CONST char *inbuf = (ICONV_CONST char *) instr;
2050 if (!instr)
2051 return VIEW_MAX_LEN(view) <= 0;
2052
2053 strncpy(instr, string, len);
2054
2055 char *outbuf = out_buffer;
2056 size_t outlen = sizeof(out_buffer);
2057
2058 size_t ret;
2059
2060 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
2061 if (ret != (size_t) -1) {
2062 string = out_buffer;
2063 len = sizeof(out_buffer) - outlen;
2064 }
2065 free(instr);
2066 }
2067
2068 waddnstr(view->win, string, len);
2069
2070 if (trimmed && use_tilde) {
2071 set_view_attr(view, LINE_DELIMITER);
2072 waddch(view->win, '~');
2073 col++;
2074 }
2075 }
2076
2077 view->col += col;
2078 return VIEW_MAX_LEN(view) <= 0;
2079 }
2080
2081 static bool
2082 draw_space(struct view *view, enum line_type type, int max, int spaces)
2083 {
2084 static char space[] = " ";
2085
2086 spaces = MIN(max, spaces);
2087
2088 while (spaces > 0) {
2089 int len = MIN(spaces, sizeof(space) - 1);
2090
2091 if (draw_chars(view, type, space, len, FALSE))
2092 return TRUE;
2093 spaces -= len;
2094 }
2095
2096 return VIEW_MAX_LEN(view) <= 0;
2097 }
2098
2099 static bool
2100 draw_text_expanded(struct view *view, enum line_type type, const char *string, int max_len, bool use_tilde)
2101 {
2102 static char text[SIZEOF_STR];
2103
2104 do {
2105 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
2106
2107 if (draw_chars(view, type, text, max_len, use_tilde))
2108 return TRUE;
2109 string += pos;
2110 } while (*string);
2111
2112 return VIEW_MAX_LEN(view) <= 0;
2113 }
2114
2115 static bool
2116 draw_text(struct view *view, enum line_type type, const char *string)
2117 {
2118 return draw_text_expanded(view, type, string, VIEW_MAX_LEN(view), TRUE);
2119 }
2120
2121 static bool
2122 draw_text_overflow(struct view *view, const char *text, bool on, int overflow, enum line_type type)
2123 {
2124 if (on) {
2125 int len = strlen(text);
2126
2127 if (draw_text_expanded(view, type, text, overflow, FALSE))
2128 return TRUE;
2129
2130 text = len > overflow ? text + overflow : "";
2131 type = LINE_OVERFLOW;
2132 }
2133
2134 if (*text && draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE))
2135 return TRUE;
2136
2137 return VIEW_MAX_LEN(view) <= 0;
2138 }
2139
2140 #define draw_commit_title(view, text, offset) \
2141 draw_text_overflow(view, text, opt_show_title_overflow, opt_title_overflow + offset, LINE_DEFAULT)
2142
2143 static bool PRINTF_LIKE(3, 4)
2144 draw_formatted(struct view *view, enum line_type type, const char *format, ...)
2145 {
2146 char text[SIZEOF_STR];
2147 int retval;
2148
2149 FORMAT_BUFFER(text, sizeof(text), format, retval, TRUE);
2150 return retval >= 0 ? draw_text(view, type, text) : VIEW_MAX_LEN(view) <= 0;
2151 }
2152
2153 static bool
2154 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
2155 {
2156 size_t skip = view->pos.col > view->col ? view->pos.col - view->col : 0;
2157 int max = VIEW_MAX_LEN(view);
2158 int i;
2159
2160 if (max < size)
2161 size = max;
2162
2163 set_view_attr(view, type);
2164 /* Using waddch() instead of waddnstr() ensures that
2165 * they'll be rendered correctly for the cursor line. */
2166 for (i = skip; i < size; i++)
2167 waddch(view->win, graphic[i]);
2168
2169 view->col += size;
2170 if (separator) {
2171 if (size < max && skip <= size)
2172 waddch(view->win, ' ');
2173 view->col++;
2174 }
2175
2176 return VIEW_MAX_LEN(view) <= 0;
2177 }
2178
2179 static bool
2180 draw_field(struct view *view, enum line_type type, const char *text, int width, bool trim)
2181 {
2182 int max = MIN(VIEW_MAX_LEN(view), width + 1);
2183 int col = view->col;
2184
2185 if (!text)
2186 return draw_space(view, type, max, max);
2187
2188 return draw_chars(view, type, text, max - 1, trim)
2189 || draw_space(view, LINE_DEFAULT, max - (view->col - col), max);
2190 }
2191
2192 static bool
2193 draw_date(struct view *view, struct time *time)
2194 {
2195 const char *date = mkdate(time, opt_date);
2196 int cols = opt_date == DATE_SHORT ? DATE_SHORT_WIDTH : DATE_WIDTH;
2197
2198 if (opt_date == DATE_NO)
2199 return FALSE;
2200
2201 return draw_field(view, LINE_DATE, date, cols, FALSE);
2202 }
2203
2204 static bool
2205 draw_author(struct view *view, const struct ident *author)
2206 {
2207 bool trim = author_trim(opt_author_width);
2208 const char *text = mkauthor(author, opt_author_width, opt_author);
2209
2210 if (opt_author == AUTHOR_NO)
2211 return FALSE;
2212
2213 return draw_field(view, LINE_AUTHOR, text, opt_author_width, trim);
2214 }
2215
2216 static bool
2217 draw_id(struct view *view, enum line_type type, const char *id)
2218 {
2219 return draw_field(view, type, id, opt_id_cols, FALSE);
2220 }
2221
2222 static bool
2223 draw_filename(struct view *view, const char *filename, bool auto_enabled)
2224 {
2225 bool trim = filename && strlen(filename) >= opt_filename_width;
2226
2227 if (opt_filename == FILENAME_NO)
2228 return FALSE;
2229
2230 if (opt_filename == FILENAME_AUTO && !auto_enabled)
2231 return FALSE;
2232
2233 return draw_field(view, LINE_FILENAME, filename, opt_filename_width, trim);
2234 }
2235
2236 static bool
2237 draw_mode(struct view *view, mode_t mode)
2238 {
2239 const char *str = mkmode(mode);
2240
2241 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r--"), FALSE);
2242 }
2243
2244 static bool
2245 draw_lineno(struct view *view, unsigned int lineno)
2246 {
2247 char number[10];
2248 int digits3 = view->digits < 3 ? 3 : view->digits;
2249 int max = MIN(VIEW_MAX_LEN(view), digits3);
2250 char *text = NULL;
2251 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
2252
2253 if (!opt_line_number)
2254 return FALSE;
2255
2256 lineno += view->pos.offset + 1;
2257 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
2258 static char fmt[] = "%1ld";
2259
2260 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
2261 if (string_format(number, fmt, lineno))
2262 text = number;
2263 }
2264 if (text)
2265 draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
2266 else
2267 draw_space(view, LINE_LINE_NUMBER, max, digits3);
2268 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
2269 }
2270
2271 static bool
2272 draw_refs(struct view *view, struct ref_list *refs)
2273 {
2274 size_t i;
2275
2276 if (!opt_show_refs || !refs)
2277 return FALSE;
2278
2279 for (i = 0; i < refs->size; i++) {
2280 struct ref *ref = refs->refs[i];
2281 enum line_type type = get_line_type_from_ref(ref);
2282
2283 if (draw_formatted(view, type, "[%s]", ref->name))
2284 return TRUE;
2285
2286 if (draw_text(view, LINE_DEFAULT, " "))
2287 return TRUE;
2288 }
2289
2290 return FALSE;
2291 }
2292
2293 static bool
2294 draw_view_line(struct view *view, unsigned int lineno)
2295 {
2296 struct line *line;
2297 bool selected = (view->pos.offset + lineno == view->pos.lineno);
2298
2299 assert(view_is_displayed(view));
2300
2301 if (view->pos.offset + lineno >= view->lines)
2302 return FALSE;
2303
2304 line = &view->line[view->pos.offset + lineno];
2305
2306 wmove(view->win, lineno, 0);
2307 if (line->cleareol)
2308 wclrtoeol(view->win);
2309 view->col = 0;
2310 view->curline = line;
2311 view->curtype = LINE_NONE;
2312 line->selected = FALSE;
2313 line->dirty = line->cleareol = 0;
2314
2315 if (selected) {
2316 set_view_attr(view, LINE_CURSOR);
2317 line->selected = TRUE;
2318 view->ops->select(view, line);
2319 }
2320
2321 return view->ops->draw(view, line, lineno);
2322 }
2323
2324 static void
2325 redraw_view_dirty(struct view *view)
2326 {
2327 bool dirty = FALSE;
2328 int lineno;
2329
2330 for (lineno = 0; lineno < view->height; lineno++) {
2331 if (view->pos.offset + lineno >= view->lines)
2332 break;
2333 if (!view->line[view->pos.offset + lineno].dirty)
2334 continue;
2335 dirty = TRUE;
2336 if (!draw_view_line(view, lineno))
2337 break;
2338 }
2339
2340 if (!dirty)
2341 return;
2342 wnoutrefresh(view->win);
2343 }
2344
2345 static void
2346 redraw_view_from(struct view *view, int lineno)
2347 {
2348 assert(0 <= lineno && lineno < view->height);
2349
2350 for (; lineno < view->height; lineno++) {
2351 if (!draw_view_line(view, lineno))
2352 break;
2353 }
2354
2355 wnoutrefresh(view->win);
2356 }
2357
2358 static void
2359 redraw_view(struct view *view)
2360 {
2361 werase(view->win);
2362 redraw_view_from(view, 0);
2363 }
2364
2365
2366 static void
2367 update_view_title(struct view *view)
2368 {
2369 char buf[SIZEOF_STR];
2370 char state[SIZEOF_STR];
2371 size_t bufpos = 0, statelen = 0;
2372 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
2373 struct line *line = &view->line[view->pos.lineno];
2374
2375 assert(view_is_displayed(view));
2376
2377 if (!view_has_flags(view, VIEW_CUSTOM_STATUS) && view_has_line(view, line) &&
2378 line->lineno) {
2379 unsigned int view_lines = view->pos.offset + view->height;
2380 unsigned int lines = view->lines
2381 ? MIN(view_lines, view->lines) * 100 / view->lines
2382 : 0;
2383
2384 string_format_from(state, &statelen, " - %s %d of %zd (%d%%)",
2385 view->ops->type,
2386 line->lineno,
2387 view->lines - view->custom_lines,
2388 lines);
2389
2390 }
2391
2392 if (view->pipe) {
2393 time_t secs = time(NULL) - view->start_time;
2394
2395 /* Three git seconds are a long time ... */
2396 if (secs > 2)
2397 string_format_from(state, &statelen, " loading %lds", secs);
2398 }
2399
2400 string_format_from(buf, &bufpos, "[%s]", view->name);
2401 if (*view->ref && bufpos < view->width) {
2402 size_t refsize = strlen(view->ref);
2403 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2404
2405 if (minsize < view->width)
2406 refsize = view->width - minsize + 7;
2407 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2408 }
2409
2410 if (statelen && bufpos < view->width) {
2411 string_format_from(buf, &bufpos, "%s", state);
2412 }
2413
2414 if (view == display[current_view])
2415 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
2416 else
2417 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
2418
2419 mvwaddnstr(window, 0, 0, buf, bufpos);
2420 wclrtoeol(window);
2421 wnoutrefresh(window);
2422 }
2423
2424 static int
2425 apply_step(double step, int value)
2426 {
2427 if (step >= 1)
2428 return (int) step;
2429 value *= step + 0.01;
2430 return value ? value : 1;
2431 }
2432
2433 static void
2434 apply_horizontal_split(struct view *base, struct view *view)
2435 {
2436 view->width = base->width;
2437 view->height = apply_step(opt_scale_split_view, base->height);
2438 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
2439 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
2440 base->height -= view->height;
2441 }
2442
2443 static void
2444 apply_vertical_split(struct view *base, struct view *view)
2445 {
2446 view->height = base->height;
2447 view->width = apply_step(opt_scale_vsplit_view, base->width);
2448 view->width = MAX(view->width, MIN_VIEW_WIDTH);
2449 view->width = MIN(view->width, base->width - MIN_VIEW_WIDTH);
2450 base->width -= view->width;
2451 }
2452
2453 static void
2454 redraw_display_separator(bool clear)
2455 {
2456 if (displayed_views() > 1 && opt_vsplit) {
2457 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
2458
2459 if (clear)
2460 wclear(display_sep);
2461 wbkgd(display_sep, separator + get_line_attr(LINE_TITLE_BLUR));
2462 wnoutrefresh(display_sep);
2463 }
2464 }
2465
2466 static void
2467 resize_display(void)
2468 {
2469 int x, y, i;
2470 struct view *base = display[0];
2471 struct view *view = display[1] ? display[1] : display[0];
2472
2473 /* Setup window dimensions */
2474
2475 getmaxyx(stdscr, base->height, base->width);
2476
2477 /* Make room for the status window. */
2478 base->height -= 1;
2479
2480 if (view != base) {
2481 if (opt_vsplit) {
2482 apply_vertical_split(base, view);
2483
2484 /* Make room for the separator bar. */
2485 view->width -= 1;
2486 } else {
2487 apply_horizontal_split(base, view);
2488 }
2489
2490 /* Make room for the title bar. */
2491 view->height -= 1;
2492 }
2493
2494 /* Make room for the title bar. */
2495 base->height -= 1;
2496
2497 x = y = 0;
2498
2499 foreach_displayed_view (view, i) {
2500 if (!display_win[i]) {
2501 display_win[i] = newwin(view->height, view->width, y, x);
2502 if (!display_win[i])
2503 die("Failed to create %s view", view->name);
2504
2505 scrollok(display_win[i], FALSE);
2506
2507 display_title[i] = newwin(1, view->width, y + view->height, x);
2508 if (!display_title[i])
2509 die("Failed to create title window");
2510
2511 } else {
2512 wresize(display_win[i], view->height, view->width);
2513 mvwin(display_win[i], y, x);
2514 wresize(display_title[i], 1, view->width);
2515 mvwin(display_title[i], y + view->height, x);
2516 }
2517
2518 if (i > 0 && opt_vsplit) {
2519 if (!display_sep) {
2520 display_sep = newwin(view->height, 1, 0, x - 1);
2521 if (!display_sep)
2522 die("Failed to create separator window");
2523
2524 } else {
2525 wresize(display_sep, view->height, 1);
2526 mvwin(display_sep, 0, x - 1);
2527 }
2528 }
2529
2530 view->win = display_win[i];
2531
2532 if (opt_vsplit)
2533 x += view->width + 1;
2534 else
2535 y += view->height + 1;
2536 }
2537
2538 redraw_display_separator(FALSE);
2539 }
2540
2541 static void
2542 redraw_display(bool clear)
2543 {
2544 struct view *view;
2545 int i;
2546
2547 foreach_displayed_view (view, i) {
2548 if (clear)
2549 wclear(view->win);
2550 redraw_view(view);
2551 update_view_title(view);
2552 }
2553
2554 redraw_display_separator(clear);
2555 }
2556
2557 /*
2558 * Option management
2559 */
2560
2561 #define TOGGLE_MENU \
2562 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
2563 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
2564 TOGGLE_(AUTHOR, 'A', "author", &opt_author, author_map) \
2565 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
2566 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
2567 TOGGLE_(FILENAME, '#', "file names", &opt_filename, filename_map) \
2568 TOGGLE_(IGNORE_SPACE, 'W', "space changes", &opt_ignore_space, ignore_space_map) \
2569 TOGGLE_(COMMIT_ORDER, 'l', "commit order", &opt_commit_order, commit_order_map) \
2570 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL) \
2571 TOGGLE_(CHANGES, 'C', "local change display", &opt_show_changes, NULL) \
2572 TOGGLE_(ID, 'X', "commit ID display", &opt_show_id, NULL) \
2573 TOGGLE_(FILES, '%', "file filtering", &opt_file_filter, NULL) \
2574 TOGGLE_(TITLE_OVERFLOW, '$', "commit title overflow display", &opt_show_title_overflow, NULL) \
2575
2576 static bool
2577 toggle_option(struct view *view, enum request request, char msg[SIZEOF_STR])
2578 {
2579 const struct {
2580 enum request request;
2581 const struct enum_map *map;
2582 size_t map_size;
2583 } data[] = {
2584 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, (map != NULL ? ARRAY_SIZE(map) : 0) },
2585 TOGGLE_MENU
2586 #undef TOGGLE_
2587 };
2588 const struct menu_item menu[] = {
2589 #define TOGGLE_(id, key, help, value, map) { key, help, value },
2590 TOGGLE_MENU
2591 #undef TOGGLE_
2592 { 0 }
2593 };
2594 int i = 0;
2595
2596 if (request == REQ_OPTIONS) {
2597 if (!prompt_menu("Toggle option", menu, &i))
2598 return FALSE;
2599 } else {
2600 while (i < ARRAY_SIZE(data) && data[i].request != request)
2601 i++;
2602 if (i >= ARRAY_SIZE(data))
2603 die("Invalid request (%d)", request);
2604 }
2605
2606 if (data[i].map != NULL) {
2607 unsigned int *opt = menu[i].data;
2608
2609 *opt = (*opt + 1) % data[i].map_size;
2610 if (data[i].map == ignore_space_map) {
2611 update_ignore_space_arg();
2612 string_format_size(msg, SIZEOF_STR,
2613 "Ignoring %s %s", enum_name(data[i].map[*opt]), menu[i].text);
2614 return TRUE;
2615
2616 } else if (data[i].map == commit_order_map) {
2617 update_commit_order_arg();
2618 string_format_size(msg, SIZEOF_STR,
2619 "Using %s %s", enum_name(data[i].map[*opt]), menu[i].text);
2620 return TRUE;
2621 }
2622
2623 string_format_size(msg, SIZEOF_STR,
2624 "Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
2625
2626 } else {
2627 bool *option = menu[i].data;
2628
2629 *option = !*option;
2630 string_format_size(msg, SIZEOF_STR,
2631 "%sabling %s", *option ? "En" : "Dis", menu[i].text);
2632
2633 if (option == &opt_file_filter)
2634 return TRUE;
2635 }
2636
2637 return FALSE;
2638 }
2639
2640
2641 /*
2642 * Navigation
2643 */
2644
2645 static bool
2646 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2647 {
2648 if (lineno >= view->lines)
2649 lineno = view->lines > 0 ? view->lines - 1 : 0;
2650
2651 if (offset > lineno || offset + view->height <= lineno) {
2652 unsigned long half = view->height / 2;
2653
2654 if (lineno > half)
2655 offset = lineno - half;
2656 else
2657 offset = 0;
2658 }
2659
2660 if (offset != view->pos.offset || lineno != view->pos.lineno) {
2661 view->pos.offset = offset;
2662 view->pos.lineno = lineno;
2663 return TRUE;
2664 }
2665
2666 return FALSE;
2667 }
2668
2669 /* Scrolling backend */
2670 static void
2671 do_scroll_view(struct view *view, int lines)
2672 {
2673 bool redraw_current_line = FALSE;
2674
2675 /* The rendering expects the new offset. */
2676 view->pos.offset += lines;
2677
2678 assert(0 <= view->pos.offset && view->pos.offset < view->lines);
2679 assert(lines);
2680
2681 /* Move current line into the view. */
2682 if (view->pos.lineno < view->pos.offset) {
2683 view->pos.lineno = view->pos.offset;
2684 redraw_current_line = TRUE;
2685 } else if (view->pos.lineno >= view->pos.offset + view->height) {
2686 view->pos.lineno = view->pos.offset + view->height - 1;
2687 redraw_current_line = TRUE;
2688 }
2689
2690 assert(view->pos.offset <= view->pos.lineno && view->pos.lineno < view->lines);
2691
2692 /* Redraw the whole screen if scrolling is pointless. */
2693 if (view->height < ABS(lines)) {
2694 redraw_view(view);
2695
2696 } else {
2697 int line = lines > 0 ? view->height - lines : 0;
2698 int end = line + ABS(lines);
2699
2700 scrollok(view->win, TRUE);
2701 wscrl(view->win, lines);
2702 scrollok(view->win, FALSE);
2703
2704 while (line < end && draw_view_line(view, line))
2705 line++;
2706
2707 if (redraw_current_line)
2708 draw_view_line(view, view->pos.lineno - view->pos.offset);
2709 wnoutrefresh(view->win);
2710 }
2711
2712 view->has_scrolled = TRUE;
2713 report_clear();
2714 }
2715
2716 /* Scroll frontend */
2717 static void
2718 scroll_view(struct view *view, enum request request)
2719 {
2720 int lines = 1;
2721
2722 assert(view_is_displayed(view));
2723
2724 switch (request) {
2725 case REQ_SCROLL_FIRST_COL:
2726 view->pos.col = 0;
2727 redraw_view_from(view, 0);
2728 report_clear();
2729 return;
2730 case REQ_SCROLL_LEFT:
2731 if (view->pos.col == 0) {
2732 report("Cannot scroll beyond the first column");
2733 return;
2734 }
2735 if (view->pos.col <= apply_step(opt_hscroll, view->width))
2736 view->pos.col = 0;
2737 else
2738 view->pos.col -= apply_step(opt_hscroll, view->width);
2739 redraw_view_from(view, 0);
2740 report_clear();
2741 return;
2742 case REQ_SCROLL_RIGHT:
2743 view->pos.col += apply_step(opt_hscroll, view->width);
2744 redraw_view(view);
2745 report_clear();
2746 return;
2747 case REQ_SCROLL_PAGE_DOWN:
2748 lines = view->height;
2749 case REQ_SCROLL_LINE_DOWN:
2750 if (view->pos.offset + lines > view->lines)
2751 lines = view->lines - view->pos.offset;
2752
2753 if (lines == 0 || view->pos.offset + view->height >= view->lines) {
2754 report("Cannot scroll beyond the last line");
2755 return;
2756 }
2757 break;
2758
2759 case REQ_SCROLL_PAGE_UP:
2760 lines = view->height;
2761 case REQ_SCROLL_LINE_UP:
2762 if (lines > view->pos.offset)
2763 lines = view->pos.offset;
2764
2765 if (lines == 0) {
2766 report("Cannot scroll beyond the first line");
2767 return;
2768 }
2769
2770 lines = -lines;
2771 break;
2772
2773 default:
2774 die("request %d not handled in switch", request);
2775 }
2776
2777 do_scroll_view(view, lines);
2778 }
2779
2780 /* Cursor moving */
2781 static void
2782 move_view(struct view *view, enum request request)
2783 {
2784 int scroll_steps = 0;
2785 int steps;
2786
2787 switch (request) {
2788 case REQ_MOVE_FIRST_LINE:
2789 steps = -view->pos.lineno;
2790 break;
2791
2792 case REQ_MOVE_LAST_LINE:
2793 steps = view->lines - view->pos.lineno - 1;
2794 break;
2795
2796 case REQ_MOVE_PAGE_UP:
2797 steps = view->height > view->pos.lineno
2798 ? -view->pos.lineno : -view->height;
2799 break;
2800
2801 case REQ_MOVE_PAGE_DOWN:
2802 steps = view->pos.lineno + view->height >= view->lines
2803 ? view->lines - view->pos.lineno - 1 : view->height;
2804 break;
2805
2806 case REQ_MOVE_UP:
2807 case REQ_PREVIOUS:
2808 steps = -1;
2809 break;
2810
2811 case REQ_MOVE_DOWN:
2812 case REQ_NEXT:
2813 steps = 1;
2814 break;
2815
2816 default:
2817 die("request %d not handled in switch", request);
2818 }
2819
2820 if (steps <= 0 && view->pos.lineno == 0) {
2821 report("Cannot move beyond the first line");
2822 return;
2823
2824 } else if (steps >= 0 && view->pos.lineno + 1 >= view->lines) {
2825 report("Cannot move beyond the last line");
2826 return;
2827 }
2828
2829 /* Move the current line */
2830 view->pos.lineno += steps;
2831 assert(0 <= view->pos.lineno && view->pos.lineno < view->lines);
2832
2833 /* Check whether the view needs to be scrolled */
2834 if (view->pos.lineno < view->pos.offset ||
2835 view->pos.lineno >= view->pos.offset + view->height) {
2836 scroll_steps = steps;
2837 if (steps < 0 && -steps > view->pos.offset) {
2838 scroll_steps = -view->pos.offset;
2839
2840 } else if (steps > 0) {
2841 if (view->pos.lineno == view->lines - 1 &&
2842 view->lines > view->height) {
2843 scroll_steps = view->lines - view->pos.offset - 1;
2844 if (scroll_steps >= view->height)
2845 scroll_steps -= view->height - 1;
2846 }
2847 }
2848 }
2849
2850 if (!view_is_displayed(view)) {
2851 view->pos.offset += scroll_steps;
2852 assert(0 <= view->pos.offset && view->pos.offset < view->lines);
2853 view->ops->select(view, &view->line[view->pos.lineno]);
2854 return;
2855 }
2856
2857 /* Repaint the old "current" line if we be scrolling */
2858 if (ABS(steps) < view->height)
2859 draw_view_line(view, view->pos.lineno - steps - view->pos.offset);
2860
2861 if (scroll_steps) {
2862 do_scroll_view(view, scroll_steps);
2863 return;
2864 }
2865
2866 /* Draw the current line */
2867 draw_view_line(view, view->pos.lineno - view->pos.offset);
2868
2869 wnoutrefresh(view->win);
2870 report_clear();
2871 }
2872
2873
2874 /*
2875 * Searching
2876 */
2877
2878 static void search_view(struct view *view, enum request request);
2879
2880 static bool
2881 grep_text(struct view *view, const char *text[])
2882 {
2883 regmatch_t pmatch;
2884 size_t i;
2885
2886 for (i = 0; text[i]; i++)
2887 if (*text[i] &&
2888 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2889 return TRUE;
2890 return FALSE;
2891 }
2892
2893 static void
2894 select_view_line(struct view *view, unsigned long lineno)
2895 {
2896 struct position old = view->pos;
2897
2898 if (goto_view_line(view, view->pos.offset, lineno)) {
2899 if (view_is_displayed(view)) {
2900 if (old.offset != view->pos.offset) {
2901 redraw_view(view);
2902 } else {
2903 draw_view_line(view, old.lineno - view->pos.offset);
2904 draw_view_line(view, view->pos.lineno - view->pos.offset);
2905 wnoutrefresh(view->win);
2906 }
2907 } else {
2908 view->ops->select(view, &view->line[view->pos.lineno]);
2909 }
2910 }
2911 }
2912
2913 static void
2914 find_next(struct view *view, enum request request)
2915 {
2916 unsigned long lineno = view->pos.lineno;
2917 int direction;
2918
2919 if (!*view->grep) {
2920 if (!*opt_search)
2921 report("No previous search");
2922 else
2923 search_view(view, request);
2924 return;
2925 }
2926
2927 switch (request) {
2928 case REQ_SEARCH:
2929 case REQ_FIND_NEXT:
2930 direction = 1;
2931 break;
2932
2933 case REQ_SEARCH_BACK:
2934 case REQ_FIND_PREV:
2935 direction = -1;
2936 break;
2937
2938 default:
2939 return;
2940 }
2941
2942 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2943 lineno += direction;
2944
2945 /* Note, lineno is unsigned long so will wrap around in which case it
2946 * will become bigger than view->lines. */
2947 for (; lineno < view->lines; lineno += direction) {
2948 if (view->ops->grep(view, &view->line[lineno])) {
2949 select_view_line(view, lineno);
2950 report("Line %ld matches '%s'", lineno + 1, view->grep);
2951 return;
2952 }
2953 }
2954
2955 report("No match found for '%s'", view->grep);
2956 }
2957
2958 static void
2959 search_view(struct view *view, enum request request)
2960 {
2961 int regex_err;
2962 int regex_flags = opt_ignore_case ? REG_ICASE : 0;
2963
2964 if (view->regex) {
2965 regfree(view->regex);
2966 *view->grep = 0;
2967 } else {
2968 view->regex = calloc(1, sizeof(*view->regex));
2969 if (!view->regex)
2970 return;
2971 }
2972
2973 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED | regex_flags);
2974 if (regex_err != 0) {
2975 char buf[SIZEOF_STR] = "unknown error";
2976
2977 regerror(regex_err, view->regex, buf, sizeof(buf));
2978 report("Search failed: %s", buf);
2979 return;
2980 }
2981
2982 string_copy(view->grep, opt_search);
2983
2984 find_next(view, request);
2985 }
2986
2987 /*
2988 * Incremental updating
2989 */
2990
2991 static inline bool
2992 check_position(struct position *pos)
2993 {
2994 return pos->lineno || pos->col || pos->offset;
2995 }
2996
2997 static inline void
2998 clear_position(struct position *pos)
2999 {
3000 memset(pos, 0, sizeof(*pos));
3001 }
3002
3003 static void
3004 reset_view(struct view *view)
3005 {
3006 int i;
3007
3008 for (i = 0; i < view->lines; i++)
3009 if (!view->line[i].dont_free)
3010 free(view->line[i].data);
3011 free(view->line);
3012
3013 view->prev_pos = view->pos;
3014 clear_position(&view->pos);
3015
3016 view->line = NULL;
3017 view->lines = 0;
3018 view->vid[0] = 0;
3019 view->custom_lines = 0;
3020 view->update_secs = 0;
3021 }
3022
3023 static const char *
3024 format_expand_arg(const char *name, bool file_filter)
3025 {
3026 static struct {
3027 const char *name;
3028 size_t namelen;
3029 const char *value;
3030 const char *value_if_empty;
3031 } vars[] = {
3032 #define FORMAT_VAR(name, value, value_if_empty) \
3033 { name, STRING_SIZE(name), value, value_if_empty }
3034 FORMAT_VAR("%(directory)", opt_path, "."),
3035 FORMAT_VAR("%(file)", opt_file, ""),
3036 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
3037 FORMAT_VAR("%(head)", ref_head, ""),
3038 FORMAT_VAR("%(commit)", ref_commit, ""),
3039 FORMAT_VAR("%(blob)", ref_blob, ""),
3040 FORMAT_VAR("%(branch)", ref_branch, ""),
3041 };
3042 int i;
3043
3044 if (!prefixcmp(name, "%(prompt"))
3045 return read_prompt("Command argument: ");
3046
3047 for (i = 0; i < ARRAY_SIZE(vars); i++)
3048 if (!strncmp(name, vars[i].name, vars[i].namelen)) {
3049 if (vars[i].value == opt_file && !file_filter)
3050 return "";
3051 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
3052 }
3053
3054 report("Unknown replacement: `%s`", name);
3055 return NULL;
3056 }
3057
3058 static bool
3059 format_append_arg(const char ***dst_argv, const char *arg, bool file_filter)
3060 {
3061 char buf[SIZEOF_STR];
3062 size_t bufpos = 0;
3063
3064 while (arg) {
3065 char *next = strstr(arg, "%(");
3066 int len = next - arg;
3067 const char *value;
3068
3069 if (!next) {
3070 len = strlen(arg);
3071 value = "";
3072
3073 } else {
3074 value = format_expand_arg(next, file_filter);
3075
3076 if (!value) {
3077 return FALSE;
3078 }
3079 }
3080
3081 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
3082 return FALSE;
3083
3084 arg = next ? strchr(next, ')') + 1 : NULL;
3085 }
3086
3087 return argv_append(dst_argv, buf);
3088 }
3089
3090 static bool
3091 format_append_argv(const char ***dst_argv, const char *src_argv[], bool file_filter)
3092 {
3093 int argc;
3094
3095 if (!src_argv)
3096 return TRUE;
3097
3098 for (argc = 0; src_argv[argc]; argc++)
3099 if (!format_append_arg(dst_argv, src_argv[argc], file_filter))
3100 return FALSE;
3101
3102 return src_argv[argc] == NULL;
3103 }
3104
3105 static bool
3106 format_argv(const char ***dst_argv, const char *src_argv[], bool first, bool file_filter)
3107 {
3108 int argc;
3109
3110 argv_free(*dst_argv);
3111
3112 for (argc = 0; src_argv[argc]; argc++) {
3113 const char *arg = src_argv[argc];
3114
3115 if (!strcmp(arg, "%(fileargs)")) {
3116 if (file_filter && !argv_append_array(dst_argv, opt_file_argv))
3117 break;
3118
3119 } else if (!strcmp(arg, "%(diffargs)")) {
3120 if (!format_append_argv(dst_argv, opt_diff_argv, file_filter))
3121 break;
3122
3123 } else if (!strcmp(arg, "%(blameargs)")) {
3124 if (!format_append_argv(dst_argv, opt_blame_argv, file_filter))
3125 break;
3126
3127 } else if (!strcmp(arg, "%(revargs)") ||
3128 (first && !strcmp(arg, "%(commit)"))) {
3129 if (!argv_append_array(dst_argv, opt_file_argv))
3130 break;
3131
3132 } else if (!format_append_arg(dst_argv, arg, file_filter)) {
3133 break;
3134 }
3135 }
3136
3137 return src_argv[argc] == NULL;
3138 }
3139
3140 static bool
3141 restore_view_position(struct view *view)
3142 {
3143 /* A view without a previous view is the first view */
3144 if (!view->prev && opt_lineno && opt_lineno <= view->lines) {
3145 select_view_line(view, opt_lineno - 1);
3146 opt_lineno = 0;
3147 }
3148
3149 /* Ensure that the view position is in a valid state. */
3150 if (!check_position(&view->prev_pos) ||
3151 (view->pipe && view->lines <= view->prev_pos.lineno))
3152 return goto_view_line(view, view->pos.offset, view->pos.lineno);
3153
3154 /* Changing the view position cancels the restoring. */
3155 /* FIXME: Changing back to the first line is not detected. */
3156 if (check_position(&view->pos)) {
3157 clear_position(&view->prev_pos);
3158 return FALSE;
3159 }
3160
3161 if (goto_view_line(view, view->prev_pos.offset, view->prev_pos.lineno) &&
3162 view_is_displayed(view))
3163 werase(view->win);
3164
3165 view->pos.col = view->prev_pos.col;
3166 clear_position(&view->prev_pos);
3167
3168 return TRUE;
3169 }
3170
3171 static void
3172 end_update(struct view *view, bool force)
3173 {
3174 if (!view->pipe)
3175 return;
3176 while (!view->ops->read(view, NULL))
3177 if (!force)
3178 return;
3179 if (force)
3180 io_kill(view->pipe);
3181 io_done(view->pipe);
3182 view->pipe = NULL;
3183 }
3184
3185 static void
3186 setup_update(struct view *view, const char *vid)
3187 {
3188 reset_view(view);
3189 /* XXX: Do not use string_copy_rev(), it copies until first space. */
3190 string_ncopy(view->vid, vid, strlen(vid));
3191 view->pipe = &view->io;
3192 view->start_time = time(NULL);
3193 }
3194
3195 static bool
3196 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
3197 {
3198 bool use_stdin = view_has_flags(view, VIEW_STDIN) && opt_stdin;
3199 bool extra = !!(flags & (OPEN_EXTRA));
3200 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED | OPEN_EXTRA));
3201 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
3202 enum io_type io_type = use_stdin ? IO_RD_STDIN : IO_RD;
3203
3204 opt_stdin = FALSE;
3205
3206 if ((!reload && !strcmp(view->vid, view->id)) ||
3207 ((flags & OPEN_REFRESH) && view->unrefreshable))
3208 return TRUE;
3209
3210 if (view->pipe) {
3211 if (extra)
3212 io_done(view->pipe);
3213 else
3214 end_update(view, TRUE);
3215 }
3216
3217 view->unrefreshable = use_stdin;
3218
3219 if (!refresh && argv) {
3220 bool file_filter = !view_has_flags(view, VIEW_FILE_FILTER) || opt_file_filter;
3221
3222 view->dir = dir;
3223 if (!format_argv(&view->argv, argv, !view->prev, file_filter)) {
3224 report("Failed to format %s arguments", view->name);
3225 return FALSE;
3226 }
3227
3228 /* Put the current ref_* value to the view title ref
3229 * member. This is needed by the blob view. Most other
3230 * views sets it automatically after loading because the
3231 * first line is a commit line. */
3232 string_copy_rev(view->ref, view->id);
3233 }
3234
3235 if (view->argv && view->argv[0] &&
3236 !io_run(&view->io, io_type, view->dir, view->argv)) {
3237 report("Failed to open %s view", view->name);
3238 return FALSE;
3239 }
3240
3241 if (!extra)
3242 setup_update(view, view->id);
3243
3244 return TRUE;
3245 }
3246
3247 static bool
3248 update_view(struct view *view)
3249 {
3250 char *line;
3251 /* Clear the view and redraw everything since the tree sorting
3252 * might have rearranged things. */
3253 bool redraw = view->lines == 0;
3254 bool can_read = TRUE;
3255 struct encoding *encoding = view->encoding ? view->encoding : opt_encoding;
3256
3257 if (!view->pipe)
3258 return TRUE;
3259
3260 if (!io_can_read(view->pipe, FALSE)) {
3261 if (view->lines == 0 && view_is_displayed(view)) {
3262 time_t secs = time(NULL) - view->start_time;
3263
3264 if (secs > 1 && secs > view->update_secs) {
3265 if (view->update_secs == 0)
3266 redraw_view(view);
3267 update_view_title(view);
3268 view->update_secs = secs;
3269 }
3270 }
3271 return TRUE;
3272 }
3273
3274 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
3275 if (encoding) {
3276 line = encoding_convert(encoding, line);
3277 }
3278
3279 if (!view->ops->read(view, line)) {
3280 report("Allocation failure");
3281 end_update(view, TRUE);
3282 return FALSE;
3283 }
3284 }
3285
3286 {
3287 unsigned long lines = view->lines;
3288 int digits;
3289
3290 for (digits = 0; lines; digits++)
3291 lines /= 10;
3292
3293 /* Keep the displayed view in sync with line number scaling. */
3294 if (digits != view->digits) {
3295 view->digits = digits;
3296 if (opt_line_number || view_has_flags(view, VIEW_ALWAYS_LINENO))
3297 redraw = TRUE;
3298 }
3299 }
3300
3301 if (io_error(view->pipe)) {
3302 report("Failed to read: %s", io_strerror(view->pipe));
3303 end_update(view, TRUE);
3304
3305 } else if (io_eof(view->pipe)) {
3306 end_update(view, FALSE);
3307 }
3308
3309 if (restore_view_position(view))
3310 redraw = TRUE;
3311
3312 if (!view_is_displayed(view))
3313 return TRUE;
3314
3315 if (redraw)
3316 redraw_view_from(view, 0);
3317 else
3318 redraw_view_dirty(view);
3319
3320 /* Update the title _after_ the redraw so that if the redraw picks up a
3321 * commit reference in view->ref it'll be available here. */
3322 update_view_title(view);
3323 return TRUE;
3324 }
3325
3326 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
3327
3328 static struct line *
3329 add_line(struct view *view, const void *data, enum line_type type, size_t data_size, bool custom)
3330 {
3331 struct line *line;
3332
3333 if (!realloc_lines(&view->line, view->lines, 1))
3334 return NULL;
3335
3336 if (data_size) {
3337 void *alloc_data = calloc(1, data_size);
3338
3339 if (!alloc_data)
3340 return NULL;
3341
3342 if (data)
3343 memcpy(alloc_data, data, data_size);
3344 data = alloc_data;
3345 }
3346
3347 line = &view->line[view->lines++];
3348 memset(line, 0, sizeof(*line));
3349 line->type = type;
3350 line->data = (void *) data;
3351 line->dirty = 1;
3352
3353 if (custom)
3354 view->custom_lines++;
3355 else
3356 line->lineno = view->lines - view->custom_lines;
3357
3358 return line;
3359 }
3360
3361 static struct line *
3362 add_line_alloc_(struct view *view, void **ptr, enum line_type type, size_t data_size, bool custom)
3363 {
3364 struct line *line = add_line(view, NULL, type, data_size, custom);
3365
3366 if (line)
3367 *ptr = line->data;
3368 return line;
3369 }
3370
3371 #define add_line_alloc(view, data_ptr, type, extra_size, custom) \
3372 add_line_alloc_(view, (void **) data_ptr, type, sizeof(**data_ptr) + extra_size, custom)
3373
3374 static struct line *
3375 add_line_nodata(struct view *view, enum line_type type)
3376 {
3377 return add_line(view, NULL, type, 0, FALSE);
3378 }
3379
3380 static struct line *
3381 add_line_static_data(struct view *view, const void *data, enum line_type type)
3382 {
3383 struct line *line = add_line(view, data, type, 0, FALSE);
3384
3385 if (line)
3386 line->dont_free = TRUE;
3387 return line;
3388 }
3389
3390 static struct line *
3391 add_line_text(struct view *view, const char *text, enum line_type type)
3392 {
3393 return add_line(view, text, type, strlen(text) + 1, FALSE);
3394 }
3395
3396 static struct line * PRINTF_LIKE(3, 4)
3397 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
3398 {
3399 char buf[SIZEOF_STR];
3400 int retval;
3401
3402 FORMAT_BUFFER(buf, sizeof(buf), fmt, retval, FALSE);
3403 return retval >= 0 ? add_line_text(view, buf, type) : NULL;
3404 }
3405
3406 /*
3407 * View opening
3408 */
3409
3410 static void
3411 split_view(struct view *prev, struct view *view)
3412 {
3413 display[1] = view;
3414 current_view = opt_focus_child ? 1 : 0;
3415 view->parent = prev;
3416 resize_display();
3417
3418 if (prev->pos.lineno - prev->pos.offset >= prev->height) {
3419 /* Take the title line into account. */
3420 int lines = prev->pos.lineno - prev->pos.offset - prev->height + 1;
3421
3422 /* Scroll the view that was split if the current line is
3423 * outside the new limited view. */
3424 do_scroll_view(prev, lines);
3425 }
3426
3427 if (view != prev && view_is_displayed(prev)) {
3428 /* "Blur" the previous view. */
3429 update_view_title(prev);
3430 }
3431 }
3432
3433 static void
3434 maximize_view(struct view *view, bool redraw)
3435 {
3436 memset(display, 0, sizeof(display));
3437 current_view = 0;
3438 display[current_view] = view;
3439 resize_display();
3440 if (redraw) {
3441 redraw_display(FALSE);
3442 report_clear();
3443 }
3444 }
3445
3446 static void
3447 load_view(struct view *view, struct view *prev, enum open_flags flags)
3448 {
3449 if (view->pipe)
3450 end_update(view, TRUE);
3451 if (view->ops->private_size) {
3452 if (!view->private)
3453 view->private = calloc(1, view->ops->private_size);
3454 else
3455 memset(view->private, 0, view->ops->private_size);
3456 }
3457
3458 /* When prev == view it means this is the first loaded view. */
3459 if (prev && view != prev) {
3460 view->prev = prev;
3461 }
3462
3463 if (!view->ops->open(view, flags))
3464 return;
3465
3466 if (prev) {
3467 bool split = !!(flags & OPEN_SPLIT);
3468
3469 if (split) {
3470 split_view(prev, view);
3471 } else {
3472 maximize_view(view, FALSE);
3473 }
3474 }
3475
3476 restore_view_position(view);
3477
3478 if (view->pipe && view->lines == 0) {
3479 /* Clear the old view and let the incremental updating refill
3480 * the screen. */
3481 werase(view->win);
3482 if (!(flags & (OPEN_RELOAD | OPEN_REFRESH)))
3483 clear_position(&view->prev_pos);
3484 report_clear();
3485 } else if (view_is_displayed(view)) {
3486 redraw_view(view);
3487 report_clear();
3488 }
3489 }
3490
3491 #define refresh_view(view) load_view(view, NULL, OPEN_REFRESH)
3492 #define reload_view(view) load_view(view, NULL, OPEN_RELOAD)
3493
3494 static void
3495 open_view(struct view *prev, enum request request, enum open_flags flags)
3496 {
3497 bool reload = !!(flags & (OPEN_RELOAD | OPEN_PREPARED));
3498 struct view *view = VIEW(request);
3499 int nviews = displayed_views();
3500
3501 assert(flags ^ OPEN_REFRESH);
3502
3503 if (view == prev && nviews == 1 && !reload) {
3504 report("Already in %s view", view->name);
3505 return;
3506 }
3507
3508 if (!view_has_flags(view, VIEW_NO_GIT_DIR) && !opt_git_dir[0]) {
3509 report("The %s view is disabled in pager view", view->name);
3510 return;
3511 }
3512
3513 load_view(view, prev ? prev : view, flags);
3514 }
3515
3516 static void
3517 open_argv(struct view *prev, struct view *view, const char *argv[], const char *dir, enum open_flags flags)
3518 {
3519 enum request request = view - views + REQ_OFFSET + 1;
3520
3521 if (view->pipe)
3522 end_update(view, TRUE);
3523 view->dir = dir;
3524
3525 if (!argv_copy(&view->argv, argv)) {
3526 report("Failed to open %s view: %s", view->name, io_strerror(&view->io));
3527 } else {
3528 open_view(prev, request, flags | OPEN_PREPARED);
3529 }
3530 }
3531
3532 static bool
3533 open_external_viewer(const char *argv[], const char *dir, bool confirm, const char *notice)
3534 {
3535 bool ok;
3536
3537 def_prog_mode(); /* save current tty modes */
3538 endwin(); /* restore original tty modes */
3539 ok = io_run_fg(argv, dir);
3540 if (confirm) {
3541 if (!ok && *notice)
3542 fprintf(stderr, "%s", notice);
3543 fprintf(stderr, "Press Enter to continue");
3544 getc(opt_tty);
3545 }
3546 reset_prog_mode();
3547 redraw_display(TRUE);
3548 return ok;
3549 }
3550
3551 static void
3552 open_mergetool(const char *file)
3553 {
3554 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
3555
3556 open_external_viewer(mergetool_argv, opt_cdup, TRUE, "");
3557 }
3558
3559 #define EDITOR_LINENO_MSG \
3560 "*** Your editor reported an error while opening the file.\n" \
3561 "*** This is probably because it doesn't support the line\n" \
3562 "*** number argument added automatically. The line number\n" \
3563 "*** has been disabled for now. You can permanently disable\n" \
3564 "*** it by adding the following line to ~/.tigrc\n" \
3565 "*** set editor-line-number = no\n"
3566
3567 static void
3568 open_editor(const char *file, unsigned int lineno)
3569 {
3570 const char *editor_argv[SIZEOF_ARG + 3] = { "vi", file, NULL };
3571 char editor_cmd[SIZEOF_STR];
3572 char lineno_cmd[SIZEOF_STR];
3573 const char *editor;
3574 int argc = 0;
3575
3576 editor = getenv("GIT_EDITOR");
3577 if (!editor && *opt_editor)
3578 editor = opt_editor;
3579 if (!editor)
3580 editor = getenv("VISUAL");
3581 if (!editor)
3582 editor = getenv("EDITOR");
3583 if (!editor)
3584 editor = "vi";
3585
3586 string_ncopy(editor_cmd, editor, strlen(editor));
3587 if (!argv_from_string_no_quotes(editor_argv, &argc, editor_cmd)) {
3588 report("Failed to read editor command");
3589 return;
3590 }
3591
3592 if (lineno && opt_editor_lineno && string_format(lineno_cmd, "+%u", lineno))
3593 editor_argv[argc++] = lineno_cmd;
3594 editor_argv[argc] = file;
3595 if (!open_external_viewer(editor_argv, opt_cdup, TRUE, EDITOR_LINENO_MSG))
3596 opt_editor_lineno = FALSE;
3597 }
3598
3599 static enum request run_prompt_command(struct view *view, char *cmd);
3600
3601 static enum request
3602 open_run_request(struct view *view, enum request request)
3603 {
3604 struct run_request *req = get_run_request(request);
3605 const char **argv = NULL;
3606
3607 request = REQ_NONE;
3608
3609 if (!req) {
3610 report("Unknown run request");
3611 return request;
3612 }
3613
3614 if (format_argv(&argv, req->argv, FALSE, TRUE)) {
3615 if (req->internal) {
3616 char cmd[SIZEOF_STR];
3617
3618 if (argv_to_string(argv, cmd, sizeof(cmd), " ")) {
3619 request = run_prompt_command(view, cmd);
3620 }
3621 }
3622 else {
3623 bool confirmed = !req->confirm;
3624
3625 if (req->confirm) {
3626 char cmd[SIZEOF_STR], prompt[SIZEOF_STR];
3627
3628 if (argv_to_string(argv, cmd, sizeof(cmd), " ") &&
3629 string_format(prompt, "Run `%s`?", cmd) &&
3630 prompt_yesno(prompt)) {
3631 confirmed = TRUE;
3632 }
3633 }
3634
3635 if (confirmed && argv_remove_quotes(argv)) {
3636 if (req->silent)
3637 io_run_bg(argv);
3638 else
3639 open_external_viewer(argv, NULL, !req->exit, "");
3640 }
3641 }
3642 }
3643
3644 if (argv)
3645 argv_free(argv);
3646 free(argv);
3647
3648 if (request == REQ_NONE) {
3649 if (req->exit)
3650 request = REQ_QUIT;
3651
3652 else if (!view->unrefreshable)
3653 request = REQ_REFRESH;
3654 }
3655 return request;
3656 }
3657
3658 /*
3659 * User request switch noodle
3660 */
3661
3662 static int
3663 view_driver(struct view *view, enum request request)
3664 {
3665 int i;
3666
3667 if (request == REQ_NONE)
3668 return TRUE;
3669
3670 if (request > REQ_NONE) {
3671 request = open_run_request(view, request);
3672
3673 // exit quickly rather than going through view_request and back
3674 if (request == REQ_QUIT)
3675 return FALSE;
3676 }
3677
3678 request = view_request(view, request);
3679 if (request == REQ_NONE)
3680 return TRUE;
3681
3682 switch (request) {
3683 case REQ_MOVE_UP:
3684 case REQ_MOVE_DOWN:
3685 case REQ_MOVE_PAGE_UP:
3686 case REQ_MOVE_PAGE_DOWN:
3687 case REQ_MOVE_FIRST_LINE:
3688 case REQ_MOVE_LAST_LINE:
3689 move_view(view, request);
3690 break;
3691
3692 case REQ_SCROLL_FIRST_COL:
3693 case REQ_SCROLL_LEFT:
3694 case REQ_SCROLL_RIGHT:
3695 case REQ_SCROLL_LINE_DOWN:
3696 case REQ_SCROLL_LINE_UP:
3697 case REQ_SCROLL_PAGE_DOWN:
3698 case REQ_SCROLL_PAGE_UP:
3699 scroll_view(view, request);
3700 break;
3701
3702 case REQ_VIEW_MAIN:
3703 case REQ_VIEW_DIFF:
3704 case REQ_VIEW_LOG:
3705 case REQ_VIEW_TREE:
3706 case REQ_VIEW_HELP:
3707 case REQ_VIEW_BRANCH:
3708 case REQ_VIEW_BLAME:
3709 case REQ_VIEW_BLOB:
3710 case REQ_VIEW_STATUS:
3711 case REQ_VIEW_STAGE:
3712 case REQ_VIEW_PAGER:
3713 open_view(view, request, OPEN_DEFAULT);
3714 break;
3715
3716 case REQ_NEXT:
3717 case REQ_PREVIOUS:
3718 if (view->parent) {
3719 int line;
3720
3721 view = view->parent;
3722 line = view->pos.lineno;
3723 move_view(view, request);
3724 if (view_is_displayed(view))
3725 update_view_title(view);
3726 if (line != view->pos.lineno)
3727 view_request(view, REQ_ENTER);
3728 } else {
3729 move_view(view, request);
3730 }
3731 break;
3732
3733 case REQ_VIEW_NEXT:
3734 {
3735 int nviews = displayed_views();
3736 int next_view = (current_view + 1) % nviews;
3737
3738 if (next_view == current_view) {
3739 report("Only one view is displayed");
3740 break;
3741 }
3742
3743 current_view = next_view;
3744 /* Blur out the title of the previous view. */
3745 update_view_title(view);
3746 report_clear();
3747 break;
3748 }
3749 case REQ_REFRESH:
3750 report("Refreshing is not yet supported for the %s view", view->name);
3751 break;
3752
3753 case REQ_MAXIMIZE:
3754 if (displayed_views() == 2)
3755 maximize_view(view, TRUE);
3756 break;
3757
3758 case REQ_OPTIONS:
3759 case REQ_TOGGLE_LINENO:
3760 case REQ_TOGGLE_DATE:
3761 case REQ_TOGGLE_AUTHOR:
3762 case REQ_TOGGLE_FILENAME:
3763 case REQ_TOGGLE_GRAPHIC:
3764 case REQ_TOGGLE_REV_GRAPH:
3765 case REQ_TOGGLE_REFS:
3766 case REQ_TOGGLE_CHANGES:
3767 case REQ_TOGGLE_IGNORE_SPACE:
3768 case REQ_TOGGLE_ID:
3769 case REQ_TOGGLE_FILES:
3770 case REQ_TOGGLE_TITLE_OVERFLOW:
3771 {
3772 char action[SIZEOF_STR] = "";
3773 bool reload = toggle_option(view, request, action);
3774
3775 if (reload && view_has_flags(view, VIEW_DIFF_LIKE))
3776 reload_view(view);
3777 else
3778 redraw_display(FALSE);
3779
3780 if (*action)
3781 report("%s", action);
3782 }
3783 break;
3784
3785 case REQ_TOGGLE_SORT_FIELD:
3786 case REQ_TOGGLE_SORT_ORDER:
3787 report("Sorting is not yet supported for the %s view", view->name);
3788 break;
3789
3790 case REQ_DIFF_CONTEXT_UP:
3791 case REQ_DIFF_CONTEXT_DOWN:
3792 report("Changing the diff context is not yet supported for the %s view", view->name);
3793 break;
3794
3795 case REQ_SEARCH:
3796 case REQ_SEARCH_BACK:
3797 search_view(view, request);
3798 break;
3799
3800 case REQ_FIND_NEXT:
3801 case REQ_FIND_PREV:
3802 find_next(view, request);
3803 break;
3804
3805 case REQ_STOP_LOADING:
3806 foreach_view(view, i) {
3807 if (view->pipe)
3808 report("Stopped loading the %s view", view->name),
3809 end_update(view, TRUE);
3810 }
3811 break;
3812
3813 case REQ_SHOW_VERSION:
3814 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3815 return TRUE;
3816
3817 case REQ_SCREEN_REDRAW:
3818 redraw_display(TRUE);
3819 break;
3820
3821 case REQ_EDIT:
3822 report("Nothing to edit");
3823 break;
3824
3825 case REQ_ENTER:
3826 report("Nothing to enter");
3827 break;
3828
3829 case REQ_VIEW_CLOSE:
3830 /* XXX: Mark closed views by letting view->prev point to the
3831 * view itself. Parents to closed view should never be
3832 * followed. */
3833 if (view->prev && view->prev != view) {
3834 maximize_view(view->prev, TRUE);
3835 view->prev = view;
3836 break;
3837 }
3838 /* Fall-through */
3839 case REQ_QUIT:
3840 return FALSE;
3841
3842 default:
3843 report("Unknown key, press %s for help",
3844 get_view_key(view, REQ_VIEW_HELP));
3845 return TRUE;
3846 }
3847
3848 return TRUE;
3849 }
3850
3851
3852 /*
3853 * View backend utilities
3854 */
3855
3856 enum sort_field {
3857 ORDERBY_NAME,
3858 ORDERBY_DATE,
3859 ORDERBY_AUTHOR,
3860 };
3861
3862 struct sort_state {
3863 const enum sort_field *fields;
3864 size_t size, current;
3865 bool reverse;
3866 };
3867
3868 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3869 #define get_sort_field(state) ((state).fields[(state).current])
3870 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3871
3872 static void
3873 sort_view(struct view *view, enum request request, struct sort_state *state,
3874 int (*compare)(const void *, const void *))
3875 {
3876 switch (request) {
3877 case REQ_TOGGLE_SORT_FIELD:
3878 state->current = (state->current + 1) % state->size;
3879 break;
3880
3881 case REQ_TOGGLE_SORT_ORDER:
3882 state->reverse = !state->reverse;
3883 break;
3884 default:
3885 die("Not a sort request");
3886 }
3887
3888 qsort(view->line, view->lines, sizeof(*view->line), compare);
3889 redraw_view(view);
3890 }
3891
3892 static bool
3893 update_diff_context(enum request request)
3894 {
3895 int diff_context = opt_diff_context;
3896
3897 switch (request) {
3898 case REQ_DIFF_CONTEXT_UP:
3899 opt_diff_context += 1;
3900 update_diff_context_arg(opt_diff_context);
3901 break;
3902
3903 case REQ_DIFF_CONTEXT_DOWN:
3904 if (opt_diff_context == 0) {
3905 report("Diff context cannot be less than zero");
3906 break;
3907 }
3908 opt_diff_context -= 1;
3909 update_diff_context_arg(opt_diff_context);
3910 break;
3911
3912 default:
3913 die("Not a diff context request");
3914 }
3915
3916 return diff_context != opt_diff_context;
3917 }
3918
3919 DEFINE_ALLOCATOR(realloc_authors, struct ident *, 256)
3920
3921 /* Small author cache to reduce memory consumption. It uses binary
3922 * search to lookup or find place to position new entries. No entries
3923 * are ever freed. */
3924 static struct ident *
3925 get_author(const char *name, const char *email)
3926 {
3927 static struct ident **authors;
3928 static size_t authors_size;
3929 int from = 0, to = authors_size - 1;
3930 struct ident *ident;
3931
3932 while (from <= to) {
3933 size_t pos = (to + from) / 2;
3934 int cmp = strcmp(name, authors[pos]->name);
3935
3936 if (!cmp)
3937 return authors[pos];
3938
3939 if (cmp < 0)
3940 to = pos - 1;
3941 else
3942 from = pos + 1;
3943 }
3944
3945 if (!realloc_authors(&authors, authors_size, 1))
3946 return NULL;
3947 ident = calloc(1, sizeof(*ident));
3948 if (!ident)
3949 return NULL;
3950 ident->name = strdup(name);
3951 ident->email = strdup(email);
3952 if (!ident->name || !ident->email) {
3953 free((void *) ident->name);
3954 free(ident);
3955 return NULL;
3956 }
3957
3958 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3959 authors[from] = ident;
3960 authors_size++;
3961
3962 return ident;
3963 }
3964
3965 static void
3966 parse_timesec(struct time *time, const char *sec)
3967 {
3968 time->sec = (time_t) atol(sec);
3969 }
3970
3971 static void
3972 parse_timezone(struct time *time, const char *zone)
3973 {
3974 long tz;
3975
3976 tz = ('0' - zone[1]) * 60 * 60 * 10;
3977 tz += ('0' - zone[2]) * 60 * 60;
3978 tz += ('0' - zone[3]) * 60 * 10;
3979 tz += ('0' - zone[4]) * 60;
3980
3981 if (zone[0] == '-')
3982 tz = -tz;
3983
3984 time->tz = tz;
3985 time->sec -= tz;
3986 }
3987
3988 /* Parse author lines where the name may be empty:
3989 * author <email@address.tld> 1138474660 +0100
3990 */
3991 static void
3992 parse_author_line(char *ident, const struct ident **author, struct time *time)
3993 {
3994 char *nameend = strchr(ident, '<');
3995 char *emailend = strchr(ident, '>');
3996 const char *name, *email = "";
3997
3998 if (nameend && emailend)
3999 *nameend = *emailend = 0;
4000 name = chomp_string(ident);
4001 if (nameend)
4002 email = chomp_string(nameend + 1);
4003 if (!*name)
4004 name = *email ? email : unknown_ident.name;
4005 if (!*email)
4006 email = *name ? name : unknown_ident.email;
4007
4008 *author = get_author(name, email);
4009
4010 /* Parse epoch and timezone */
4011 if (time && emailend && emailend[1] == ' ') {
4012 char *secs = emailend + 2;
4013 char *zone = strchr(secs, ' ');
4014
4015 parse_timesec(time, secs);
4016
4017 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
4018 parse_timezone(time, zone + 1);
4019 }
4020 }
4021
4022 static struct line *
4023 find_line_by_type(struct view *view, struct line *line, enum line_type type, int direction)
4024 {
4025 for (; view_has_line(view, line); line += direction)
4026 if (line->type == type)
4027 return line;
4028
4029 return NULL;
4030 }
4031
4032 #define find_prev_line_by_type(view, line, type) \
4033 find_line_by_type(view, line, type, -1)
4034
4035 #define find_next_line_by_type(view, line, type) \
4036 find_line_by_type(view, line, type, 1)
4037
4038 /*
4039 * Blame
4040 */
4041
4042 struct blame_commit {
4043 char id[SIZEOF_REV]; /* SHA1 ID. */
4044 char title[128]; /* First line of the commit message. */
4045 const struct ident *author; /* Author of the commit. */
4046 struct time time; /* Date from the author ident. */
4047 char filename[128]; /* Name of file. */
4048 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4049 char parent_filename[128]; /* Parent/previous name of file. */
4050 };
4051
4052 struct blame_header {
4053 char id[SIZEOF_REV]; /* SHA1 ID. */
4054 size_t orig_lineno;
4055 size_t lineno;
4056 size_t group;
4057 };
4058
4059 static bool
4060 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4061 {
4062 const char *pos = *posref;
4063
4064 *posref = NULL;
4065 pos = strchr(pos + 1, ' ');
4066 if (!pos || !isdigit(pos[1]))
4067 return FALSE;
4068 *number = atoi(pos + 1);
4069 if (*number < min || *number > max)
4070 return FALSE;
4071
4072 *posref = pos;
4073 return TRUE;
4074 }
4075
4076 static bool
4077 parse_blame_header(struct blame_header *header, const char *text, size_t max_lineno)
4078 {
4079 const char *pos = text + SIZEOF_REV - 2;
4080
4081 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4082 return FALSE;
4083
4084 string_ncopy(header->id, text, SIZEOF_REV);
4085
4086 if (!parse_number(&pos, &header->orig_lineno, 1, 9999999) ||
4087 !parse_number(&pos, &header->lineno, 1, max_lineno) ||
4088 !parse_number(&pos, &header->group, 1, max_lineno - header->lineno + 1))
4089 return FALSE;
4090
4091 return TRUE;
4092 }
4093
4094 static bool
4095 match_blame_header(const char *name, char **line)
4096 {
4097 size_t namelen = strlen(name);
4098 bool matched = !strncmp(name, *line, namelen);
4099
4100 if (matched)
4101 *line += namelen;
4102
4103 return matched;
4104 }
4105
4106 static bool
4107 parse_blame_info(struct blame_commit *commit, char *line)
4108 {
4109 if (match_blame_header("author ", &line)) {
4110 parse_author_line(line, &commit->author, NULL);
4111
4112 } else if (match_blame_header("author-time ", &line)) {
4113 parse_timesec(&commit->time, line);
4114
4115 } else if (match_blame_header("author-tz ", &line)) {
4116 parse_timezone(&commit->time, line);
4117
4118 } else if (match_blame_header("summary ", &line)) {
4119 string_ncopy(commit->title, line, strlen(line));
4120
4121 } else if (match_blame_header("previous ", &line)) {
4122 if (strlen(line) <= SIZEOF_REV)
4123 return FALSE;
4124 string_copy_rev(commit->parent_id, line);
4125 line += SIZEOF_REV;
4126 string_ncopy(commit->parent_filename, line, strlen(line));
4127
4128 } else if (match_blame_header("filename ", &line)) {
4129 string_ncopy(commit->filename, line, strlen(line));
4130 return TRUE;
4131 }
4132
4133 return FALSE;
4134 }
4135
4136 /*
4137 * Pager backend
4138 */
4139
4140 static bool
4141 pager_draw(struct view *view, struct line *line, unsigned int lineno)
4142 {
4143 if (draw_lineno(view, lineno))
4144 return TRUE;
4145
4146 if (line->wrapped && draw_text(view, LINE_DELIMITER, "+"))
4147 return TRUE;
4148
4149 draw_text(view, line->type, line->data);
4150 return TRUE;
4151 }
4152
4153 static bool
4154 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
4155 {
4156 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
4157 char ref[SIZEOF_STR];
4158
4159 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
4160 return TRUE;
4161
4162 /* This is the only fatal call, since it can "corrupt" the buffer. */
4163 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
4164 return FALSE;
4165
4166 return TRUE;
4167 }
4168
4169 static void
4170 add_pager_refs(struct view *view, const char *commit_id)
4171 {
4172 char buf[SIZEOF_STR];
4173 struct ref_list *list;
4174 size_t bufpos = 0, i;
4175 const char *sep = "Refs: ";
4176 bool is_tag = FALSE;
4177
4178 list = get_ref_list(commit_id);
4179 if (!list) {
4180 if (view_has_flags(view, VIEW_ADD_DESCRIBE_REF))
4181 goto try_add_describe_ref;
4182 return;
4183 }
4184
4185 for (i = 0; i < list->size; i++) {
4186 struct ref *ref = list->refs[i];
4187 const char *fmt = ref->tag ? "%s[%s]" :
4188 ref->remote ? "%s<%s>" : "%s%s";
4189
4190 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
4191 return;
4192 sep = ", ";
4193 if (ref->tag)
4194 is_tag = TRUE;
4195 }
4196
4197 if (!is_tag && view_has_flags(view, VIEW_ADD_DESCRIBE_REF)) {
4198 try_add_describe_ref:
4199 /* Add <tag>-g<commit_id> "fake" reference. */
4200 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
4201 return;
4202 }
4203
4204 if (bufpos == 0)
4205 return;
4206
4207 add_line_text(view, buf, LINE_PP_REFS);
4208 }
4209
4210 static struct line *
4211 pager_wrap_line(struct view *view, const char *data, enum line_type type)
4212 {
4213 size_t first_line = 0;
4214 bool has_first_line = FALSE;
4215 size_t datalen = strlen(data);
4216 size_t lineno = 0;
4217
4218 while (datalen > 0 || !has_first_line) {
4219 bool wrapped = !!first_line;
4220 size_t linelen = string_expanded_length(data, datalen, opt_tab_size, view->width - !!wrapped);
4221 struct line *line;
4222 char *text;
4223
4224 line = add_line(view, NULL, type, linelen + 1, wrapped);
4225 if (!line)
4226 break;
4227 if (!has_first_line) {
4228 first_line = view->lines - 1;
4229 has_first_line = TRUE;
4230 }
4231
4232 if (!wrapped)
4233 lineno = line->lineno;
4234
4235 line->wrapped = wrapped;
4236 line->lineno = lineno;
4237 text = line->data;
4238 if (linelen)
4239 strncpy(text, data, linelen);
4240 text[linelen] = 0;
4241
4242 datalen -= linelen;
4243 data += linelen;
4244 }
4245
4246 return has_first_line ? &view->line[first_line] : NULL;
4247 }
4248
4249 static bool
4250 pager_common_read(struct view *view, const char *data, enum line_type type)
4251 {
4252 struct line *line;
4253
4254 if (!data)
4255 return TRUE;
4256
4257 if (opt_wrap_lines) {
4258 line = pager_wrap_line(view, data, type);
4259 } else {
4260 line = add_line_text(view, data, type);
4261 }
4262
4263 if (!line)
4264 return FALSE;
4265
4266 if (line->type == LINE_COMMIT && view_has_flags(view, VIEW_ADD_PAGER_REFS))
4267 add_pager_refs(view, data + STRING_SIZE("commit "));
4268
4269 return TRUE;
4270 }
4271
4272 static bool
4273 pager_read(struct view *view, char *data)
4274 {
4275 if (!data)
4276 return TRUE;
4277
4278 return pager_common_read(view, data, get_line_type(data));
4279 }
4280
4281 static enum request
4282 pager_request(struct view *view, enum request request, struct line *line)
4283 {
4284 int split = 0;
4285
4286 if (request != REQ_ENTER)
4287 return request;
4288
4289 if (line->type == LINE_COMMIT && view_has_flags(view, VIEW_OPEN_DIFF)) {
4290 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
4291 split = 1;
4292 }
4293
4294 /* Always scroll the view even if it was split. That way
4295 * you can use Enter to scroll through the log view and
4296 * split open each commit diff. */
4297 scroll_view(view, REQ_SCROLL_LINE_DOWN);
4298
4299 /* FIXME: A minor workaround. Scrolling the view will call report_clear()
4300 * but if we are scrolling a non-current view this won't properly
4301 * update the view title. */
4302 if (split)
4303 update_view_title(view);
4304
4305 return REQ_NONE;
4306 }
4307
4308 static bool
4309 pager_grep(struct view *view, struct line *line)
4310 {
4311 const char *text[] = { line->data, NULL };
4312
4313 return grep_text(view, text);
4314 }
4315
4316 static void
4317 pager_select(struct view *view, struct line *line)
4318 {
4319 if (line->type == LINE_COMMIT) {
4320 char *text = (char *)line->data + STRING_SIZE("commit ");
4321
4322 if (!view_has_flags(view, VIEW_NO_REF))
4323 string_copy_rev(view->ref, text);
4324 string_copy_rev(ref_commit, text);
4325 }
4326 }
4327
4328 static bool
4329 pager_open(struct view *view, enum open_flags flags)
4330 {
4331 if (display[0] == NULL) {
4332 if (!io_open(&view->io, "%s", ""))
4333 die("Failed to open stdin");
4334 flags = OPEN_PREPARED;
4335
4336 } else if (!view->pipe && !view->lines && !(flags & OPEN_PREPARED)) {
4337 report("No pager content, press %s to run command from prompt",
4338 get_view_key(view, REQ_PROMPT));
4339 return FALSE;
4340 }
4341
4342 return begin_update(view, NULL, NULL, flags);
4343 }
4344
4345 static struct view_ops pager_ops = {
4346 "line",
4347 { "pager" },
4348 VIEW_OPEN_DIFF | VIEW_NO_REF | VIEW_NO_GIT_DIR,
4349 0,
4350 pager_open,
4351 pager_read,
4352 pager_draw,
4353 pager_request,
4354 pager_grep,
4355 pager_select,
4356 };
4357
4358 static bool
4359 log_open(struct view *view, enum open_flags flags)
4360 {
4361 static const char *log_argv[] = {
4362 "git", "log", opt_encoding_arg, "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
4363 };
4364
4365 return begin_update(view, NULL, log_argv, flags);
4366 }
4367
4368 static enum request
4369 log_request(struct view *view, enum request request, struct line *line)
4370 {
4371 switch (request) {
4372 case REQ_REFRESH:
4373 load_refs();
4374 refresh_view(view);
4375 return REQ_NONE;
4376 default:
4377 return pager_request(view, request, line);
4378 }
4379 }
4380
4381 static struct view_ops log_ops = {
4382 "line",
4383 { "log" },
4384 VIEW_ADD_PAGER_REFS | VIEW_OPEN_DIFF | VIEW_SEND_CHILD_ENTER,
4385 0,
4386 log_open,
4387 pager_read,
4388 pager_draw,
4389 log_request,
4390 pager_grep,
4391 pager_select,
4392 };
4393
4394 struct diff_state {
4395 bool after_commit_title;
4396 bool reading_diff_stat;
4397 bool combined_diff;
4398 };
4399
4400 #define DIFF_LINE_COMMIT_TITLE 1
4401
4402 static bool
4403 diff_open(struct view *view, enum open_flags flags)
4404 {
4405 static const char *diff_argv[] = {
4406 "git", "show", opt_encoding_arg, "--pretty=fuller", "--no-color", "--root",
4407 "--patch-with-stat",
4408 opt_notes_arg, opt_diff_context_arg, opt_ignore_space_arg,
4409 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
4410 };
4411
4412 return begin_update(view, NULL, diff_argv, flags);
4413 }
4414
4415 static bool
4416 diff_common_read(struct view *view, const char *data, struct diff_state *state)
4417 {
4418 enum line_type type = get_line_type(data);
4419
4420 if (!view->lines && type != LINE_COMMIT)
4421 state->reading_diff_stat = TRUE;
4422
4423 if (state->reading_diff_stat) {
4424 size_t len = strlen(data);
4425 char *pipe = strchr(data, '|');
4426 bool has_histogram = data[len - 1] == '-' || data[len - 1] == '+';
4427 bool has_bin_diff = pipe && strstr(pipe, "Bin") && strstr(pipe, "->");
4428 bool has_rename = data[len - 1] == '0' && (strstr(data, "=>") || !strncmp(data, " ...", 4));
4429
4430 if (pipe && (has_histogram || has_bin_diff || has_rename)) {
4431 return add_line_text(view, data, LINE_DIFF_STAT) != NULL;
4432 } else {
4433 state->reading_diff_stat = FALSE;
4434 }
4435
4436 } else if (!strcmp(data, "---")) {
4437 state->reading_diff_stat = TRUE;
4438 }
4439
4440 if (!state->after_commit_title && !prefixcmp(data, " ")) {
4441 struct line *line = add_line_text(view, data, LINE_DIFF_STAT);
4442
4443 if (line)
4444 line->user_flags |= DIFF_LINE_COMMIT_TITLE;
4445 state->after_commit_title = TRUE;
4446 return line != NULL;
4447 }
4448
4449 if (type == LINE_DIFF_HEADER) {
4450 const int len = line_info[LINE_DIFF_HEADER].linelen;
4451
4452 if (!strncmp(data + len, "combined ", strlen("combined ")) ||
4453 !strncmp(data + len, "cc ", strlen("cc ")))
4454 state->combined_diff = TRUE;
4455 }
4456
4457 /* ADD2 and DEL2 are only valid in combined diff hunks */
4458 if (!state->combined_diff && (type == LINE_DIFF_ADD2 || type == LINE_DIFF_DEL2))
4459 type = LINE_DEFAULT;
4460
4461 return pager_common_read(view, data, type);
4462 }
4463
4464 static bool
4465 diff_find_stat_entry(struct view *view, struct line *line, enum line_type type)
4466 {
4467 struct line *marker = find_next_line_by_type(view, line, type);
4468
4469 return marker &&
4470 line == find_prev_line_by_type(view, marker, LINE_DIFF_HEADER);
4471 }
4472
4473 static enum request
4474 diff_common_enter(struct view *view, enum request request, struct line *line)
4475 {
4476 if (line->type == LINE_DIFF_STAT) {
4477 int file_number = 0;
4478
4479 while (view_has_line(view, line) && line->type == LINE_DIFF_STAT) {
4480 file_number++;
4481 line--;
4482 }
4483
4484 for (line = view->line; view_has_line(view, line); line++) {
4485 line = find_next_line_by_type(view, line, LINE_DIFF_HEADER);
4486 if (!line)
4487 break;
4488
4489 if (diff_find_stat_entry(view, line, LINE_DIFF_INDEX)
4490 || diff_find_stat_entry(view, line, LINE_DIFF_SIMILARITY)) {
4491 if (file_number == 1) {
4492 break;
4493 }
4494 file_number--;
4495 }
4496 }
4497
4498 if (!line) {
4499 report("Failed to find file diff");
4500 return REQ_NONE;
4501 }
4502
4503 select_view_line(view, line - view->line);
4504 report_clear();
4505 return REQ_NONE;
4506
4507 } else {
4508 return pager_request(view, request, line);
4509 }
4510 }
4511
4512 static bool
4513 diff_common_draw_part(struct view *view, enum line_type *type, char **text, char c, enum line_type next_type)
4514 {
4515 char *sep = strchr(*text, c);
4516
4517 if (sep != NULL) {
4518 *sep = 0;
4519 draw_text(view, *type, *text);
4520 *sep = c;
4521 *text = sep;
4522 *type = next_type;
4523 }
4524
4525 return sep != NULL;
4526 }
4527
4528 static bool
4529 diff_common_draw(struct view *view, struct line *line, unsigned int lineno)
4530 {
4531 char *text = line->data;
4532 enum line_type type = line->type;
4533
4534 if (draw_lineno(view, lineno))
4535 return TRUE;
4536
4537 if (line->wrapped && draw_text(view, LINE_DELIMITER, "+"))
4538 return TRUE;
4539
4540 if (type == LINE_DIFF_STAT) {
4541 diff_common_draw_part(view, &type, &text, '|', LINE_DEFAULT);
4542 if (diff_common_draw_part(view, &type, &text, 'B', LINE_DEFAULT)) {
4543 /* Handle binary diffstat: Bin <deleted> -> <added> bytes */
4544 diff_common_draw_part(view, &type, &text, ' ', LINE_DIFF_DEL);
4545 diff_common_draw_part(view, &type, &text, '-', LINE_DEFAULT);
4546 diff_common_draw_part(view, &type, &text, ' ', LINE_DIFF_ADD);
4547 diff_common_draw_part(view, &type, &text, 'b', LINE_DEFAULT);
4548
4549 } else {
4550 diff_common_draw_part(view, &type, &text, '+', LINE_DIFF_ADD);
4551 diff_common_draw_part(view, &type, &text, '-', LINE_DIFF_DEL);
4552 }
4553 }
4554
4555 if (line->user_flags & DIFF_LINE_COMMIT_TITLE)
4556 draw_commit_title(view, text, 4);
4557 else
4558 draw_text(view, type, text);
4559 return TRUE;
4560 }
4561
4562 static bool
4563 diff_read(struct view *view, char *data)
4564 {
4565 struct diff_state *state = view->private;
4566
4567 if (!data) {
4568 /* Fall back to retry if no diff will be shown. */
4569 if (view->lines == 0 && opt_file_argv) {
4570 int pos = argv_size(view->argv)
4571 - argv_size(opt_file_argv) - 1;
4572
4573 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
4574 for (; view->argv[pos]; pos++) {
4575 free((void *) view->argv[pos]);
4576 view->argv[pos] = NULL;
4577 }
4578
4579 if (view->pipe)
4580 io_done(view->pipe);
4581 if (io_run(&view->io, IO_RD, view->dir, view->argv))
4582 return FALSE;
4583 }
4584 }
4585 return TRUE;
4586 }
4587
4588 return diff_common_read(view, data, state);
4589 }
4590
4591 static bool
4592 diff_blame_line(const char *ref, const char *file, unsigned long lineno,
4593 struct blame_header *header, struct blame_commit *commit)
4594 {
4595 char line_arg[SIZEOF_STR];
4596 const char *blame_argv[] = {
4597 "git", "blame", opt_encoding_arg, "-p", line_arg, ref, "--", file, NULL
4598 };
4599 struct io io;
4600 bool ok = FALSE;
4601 char *buf;
4602
4603 if (!string_format(line_arg, "-L%ld,+1", lineno))
4604 return FALSE;
4605
4606 if (!io_run(&io, IO_RD, opt_cdup, blame_argv))
4607 return FALSE;
4608
4609 while ((buf = io_get(&io, '\n', TRUE))) {
4610 if (header) {
4611 if (!parse_blame_header(header, buf, 9999999))
4612 break;
4613 header = NULL;
4614
4615 } else if (parse_blame_info(commit, buf)) {
4616 ok = TRUE;
4617 break;
4618 }
4619 }
4620
4621 if (io_error(&io))
4622 ok = FALSE;
4623
4624 io_done(&io);
4625 return ok;
4626 }
4627
4628 static unsigned int
4629 diff_get_lineno(struct view *view, struct line *line)
4630 {
4631 const struct line *header, *chunk;
4632 const char *data;
4633 unsigned int lineno;
4634
4635 /* Verify that we are after a diff header and one of its chunks */
4636 header = find_prev_line_by_type(view, line, LINE_DIFF_HEADER);
4637 chunk = find_prev_line_by_type(view, line, LINE_DIFF_CHUNK);
4638 if (!header || !chunk || chunk < header)
4639 return 0;
4640
4641 /*
4642 * In a chunk header, the number after the '+' sign is the number of its
4643 * following line, in the new version of the file. We increment this
4644 * number for each non-deletion line, until the given line position.
4645 */
4646 data = strchr(chunk->data, '+');
4647 if (!data)
4648 return 0;
4649
4650 lineno = atoi(data);
4651 chunk++;
4652 while (chunk++ < line)
4653 if (chunk->type != LINE_DIFF_DEL)
4654 lineno++;
4655
4656 return lineno;
4657 }
4658
4659 static bool
4660 parse_chunk_lineno(int *lineno, const char *chunk, int marker)
4661 {
4662 return prefixcmp(chunk, "@@ -") ||
4663 !(chunk = strchr(chunk, marker)) ||
4664 parse_int(lineno, chunk + 1, 0, 9999999) != OPT_OK;
4665 }
4666
4667 static enum request
4668 diff_trace_origin(struct view *view, struct line *line)
4669 {
4670 struct line *diff = find_prev_line_by_type(view, line, LINE_DIFF_HEADER);
4671 struct line *chunk = find_prev_line_by_type(view, line, LINE_DIFF_CHUNK);
4672 const char *chunk_data;
4673 int chunk_marker = line->type == LINE_DIFF_DEL ? '-' : '+';
4674 int lineno = 0;
4675 const char *file = NULL;
4676 char ref[SIZEOF_REF];
4677 struct blame_header header;
4678 struct blame_commit commit;
4679
4680 if (!diff || !chunk || chunk == line) {
4681 report("The line to trace must be inside a diff chunk");
4682 return REQ_NONE;
4683 }
4684
4685 for (; diff < line && !file; diff++) {
4686 const char *data = diff->data;
4687
4688 if (!prefixcmp(data, "--- a/")) {
4689 file = data + STRING_SIZE("--- a/");
4690 break;
4691 }
4692 }
4693
4694 if (diff == line || !file) {
4695 report("Failed to read the file name");
4696 return REQ_NONE;
4697 }
4698
4699 chunk_data = chunk->data;
4700
4701 if (parse_chunk_lineno(&lineno, chunk_data, chunk_marker)) {
4702 report("Failed to read the line number");
4703 return REQ_NONE;
4704 }
4705
4706 if (lineno == 0) {
4707 report("This is the origin of the line");
4708 return REQ_NONE;
4709 }
4710
4711 for (chunk += 1; chunk < line; chunk++) {
4712 if (chunk->type == LINE_DIFF_ADD) {
4713 lineno += chunk_marker == '+';
4714 } else if (chunk->type == LINE_DIFF_DEL) {
4715 lineno += chunk_marker == '-';
4716 } else {
4717 lineno++;
4718 }
4719 }
4720
4721 if (chunk_marker == '+')
4722 string_copy(ref, view->vid);
4723 else
4724 string_format(ref, "%s^", view->vid);
4725
4726 if (!diff_blame_line(ref, file, lineno, &header, &commit)) {
4727 report("Failed to read blame data");
4728 return REQ_NONE;
4729 }
4730
4731 string_ncopy(opt_file, commit.filename, strlen(commit.filename));
4732 string_copy(opt_ref, header.id);
4733 opt_goto_line = header.orig_lineno - 1;
4734
4735 return REQ_VIEW_BLAME;
4736 }
4737
4738 static const char *
4739 diff_get_pathname(struct view *view, struct line *line)
4740 {
4741 const struct line *header;
4742 const char *dst = NULL;
4743 const char *prefixes[] = { " b/", "cc ", "combined " };
4744 int i;
4745
4746 header = find_prev_line_by_type(view, line, LINE_DIFF_HEADER);
4747 if (!header)
4748 return NULL;
4749
4750 for (i = 0; i < ARRAY_SIZE(prefixes) && !dst; i++)
4751 dst = strstr(header->data, prefixes[i]);
4752
4753 return dst ? dst + strlen(prefixes[--i]) : NULL;
4754 }
4755
4756 static enum request
4757 diff_request(struct view *view, enum request request, struct line *line)
4758 {
4759 const char *file;
4760
4761 switch (request) {
4762 case REQ_VIEW_BLAME:
4763 return diff_trace_origin(view, line);
4764
4765 case REQ_DIFF_CONTEXT_UP:
4766 case REQ_DIFF_CONTEXT_DOWN:
4767 if (!update_diff_context(request))
4768 return REQ_NONE;
4769 reload_view(view);
4770 return REQ_NONE;
4771
4772
4773 case REQ_EDIT:
4774 file = diff_get_pathname(view, line);
4775 if (!file || access(file, R_OK))
4776 return pager_request(view, request, line);
4777 open_editor(file, diff_get_lineno(view, line));
4778 return REQ_NONE;
4779
4780 case REQ_ENTER:
4781 return diff_common_enter(view, request, line);
4782
4783 case REQ_REFRESH:
4784 reload_view(view);
4785 return REQ_NONE;
4786
4787 default:
4788 return pager_request(view, request, line);
4789 }
4790 }
4791
4792 static void
4793 diff_select(struct view *view, struct line *line)
4794 {
4795 if (line->type == LINE_DIFF_STAT) {
4796 string_format(view->ref, "Press '%s' to jump to file diff",
4797 get_view_key(view, REQ_ENTER));
4798 } else {
4799 const char *file = diff_get_pathname(view, line);
4800
4801 if (file) {
4802 string_format(view->ref, "Changes to '%s'", file);
4803 string_format(opt_file, "%s", file);
4804 ref_blob[0] = 0;
4805 } else {
4806 string_ncopy(view->ref, view->id, strlen(view->id));
4807 pager_select(view, line);
4808 }
4809 }
4810 }
4811
4812 static struct view_ops diff_ops = {
4813 "line",
4814 { "diff" },
4815 VIEW_DIFF_LIKE | VIEW_ADD_DESCRIBE_REF | VIEW_ADD_PAGER_REFS | VIEW_STDIN | VIEW_FILE_FILTER,
4816 sizeof(struct diff_state),
4817 diff_open,
4818 diff_read,
4819 diff_common_draw,
4820 diff_request,
4821 pager_grep,
4822 diff_select,
4823 };
4824
4825 /*
4826 * Help backend
4827 */
4828
4829 static bool
4830 help_draw(struct view *view, struct line *line, unsigned int lineno)
4831 {
4832 if (line->type == LINE_HELP_KEYMAP) {
4833 struct keymap *keymap = line->data;
4834
4835 draw_formatted(view, line->type, "[%c] %s bindings",
4836 keymap->hidden ? '+' : '-', keymap->name);
4837 return TRUE;
4838 } else {
4839 return pager_draw(view, line, lineno);
4840 }
4841 }
4842
4843 static bool
4844 help_open_keymap_title(struct view *view, struct keymap *keymap)
4845 {
4846 add_line_static_data(view, keymap, LINE_HELP_KEYMAP);
4847 return keymap->hidden;
4848 }
4849
4850 static void
4851 help_open_keymap(struct view *view, struct keymap *keymap)
4852 {
4853 const char *group = NULL;
4854 char buf[SIZEOF_STR];
4855 bool add_title = TRUE;
4856 int i;
4857
4858 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
4859 const char *key = NULL;
4860
4861 if (req_info[i].request == REQ_NONE)
4862 continue;
4863
4864 if (!req_info[i].request) {
4865 group = req_info[i].help;
4866 continue;
4867 }
4868
4869 key = get_keys(keymap, req_info[i].request, TRUE);
4870 if (!key || !*key)
4871 continue;
4872
4873 if (add_title && help_open_keymap_title(view, keymap))
4874 return;
4875 add_title = FALSE;
4876
4877 if (group) {
4878 add_line_text(view, group, LINE_HELP_GROUP);
4879 group = NULL;
4880 }
4881
4882 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
4883 enum_name(req_info[i]), req_info[i].help);
4884 }
4885
4886 group = "External commands:";
4887
4888 for (i = 0; i < run_requests; i++) {
4889 struct run_request *req = get_run_request(REQ_NONE + i + 1);
4890 const char *key;
4891
4892 if (!req || req->keymap != keymap)
4893 continue;
4894
4895 key = get_key_name(req->key);
4896 if (!*key)
4897 key = "(no key defined)";
4898
4899 if (add_title && help_open_keymap_title(view, keymap))
4900 return;
4901 add_title = FALSE;
4902
4903 if (group) {
4904 add_line_text(view, group, LINE_HELP_GROUP);
4905 group = NULL;
4906 }
4907
4908 if (!argv_to_string(req->argv, buf, sizeof(buf), " "))
4909 return;
4910
4911 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
4912 }
4913 }
4914
4915 static bool
4916 help_open(struct view *view, enum open_flags flags)
4917 {
4918 struct keymap *keymap;
4919
4920 reset_view(view);
4921 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
4922 add_line_text(view, "", LINE_DEFAULT);
4923
4924 for (keymap = keymaps; keymap; keymap = keymap->next)
4925 help_open_keymap(view, keymap);
4926
4927 return TRUE;
4928 }
4929
4930 static enum request
4931 help_request(struct view *view, enum request request, struct line *line)
4932 {
4933 switch (request) {
4934 case REQ_ENTER:
4935 if (line->type == LINE_HELP_KEYMAP) {
4936 struct keymap *keymap = line->data;
4937
4938 keymap->hidden = !keymap->hidden;
4939 refresh_view(view);
4940 }
4941
4942 return REQ_NONE;
4943 default:
4944 return pager_request(view, request, line);
4945 }
4946 }
4947
4948 static struct view_ops help_ops = {
4949 "line",
4950 { "help" },
4951 VIEW_NO_GIT_DIR,
4952 0,
4953 help_open,
4954 NULL,
4955 help_draw,
4956 help_request,
4957 pager_grep,
4958 pager_select,
4959 };
4960
4961
4962 /*
4963 * Tree backend
4964 */
4965
4966 struct tree_stack_entry {
4967 struct tree_stack_entry *prev; /* Entry below this in the stack */
4968 unsigned long lineno; /* Line number to restore */
4969 char *name; /* Position of name in opt_path */
4970 };
4971
4972 /* The top of the path stack. */
4973 static struct tree_stack_entry *tree_stack = NULL;
4974 unsigned long tree_lineno = 0;
4975
4976 static void
4977 pop_tree_stack_entry(void)
4978 {
4979 struct tree_stack_entry *entry = tree_stack;
4980
4981 tree_lineno = entry->lineno;
4982 entry->name[0] = 0;
4983 tree_stack = entry->prev;
4984 free(entry);
4985 }
4986
4987 static void
4988 push_tree_stack_entry(const char *name, unsigned long lineno)
4989 {
4990 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
4991 size_t pathlen = strlen(opt_path);
4992
4993 if (!entry)
4994 return;
4995
4996 entry->prev = tree_stack;
4997 entry->name = opt_path + pathlen;
4998 tree_stack = entry;
4999
5000 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
5001 pop_tree_stack_entry();
5002 return;
5003 }
5004
5005 /* Move the current line to the first tree entry. */
5006 tree_lineno = 1;
5007 entry->lineno = lineno;
5008 }
5009
5010 /* Parse output from git-ls-tree(1):
5011 *
5012 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
5013 */
5014
5015 #define SIZEOF_TREE_ATTR \
5016 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
5017
5018 #define SIZEOF_TREE_MODE \
5019 STRING_SIZE("100644 ")
5020
5021 #define TREE_ID_OFFSET \
5022 STRING_SIZE("100644 blob ")
5023
5024 #define tree_path_is_parent(path) (!strcmp("..", (path)))
5025
5026 struct tree_entry {
5027 char id[SIZEOF_REV];
5028 char commit[SIZEOF_REV];
5029 mode_t mode;
5030 struct time time; /* Date from the author ident. */
5031 const struct ident *author; /* Author of the commit. */
5032 char name[1];
5033 };
5034
5035 struct tree_state {
5036 char commit[SIZEOF_REV];
5037 const struct ident *author;
5038 struct time author_time;
5039 bool read_date;
5040 };
5041
5042 static const char *
5043 tree_path(const struct line *line)
5044 {
5045 return ((struct tree_entry *) line->data)->name;
5046 }
5047
5048 static int
5049 tree_compare_entry(const struct line *line1, const struct line *line2)
5050 {
5051 if (line1->type != line2->type)
5052 return line1->type == LINE_TREE_DIR ? -1 : 1;
5053 return strcmp(tree_path(line1), tree_path(line2));
5054 }
5055
5056 static const enum sort_field tree_sort_fields[] = {
5057 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
5058 };
5059 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
5060
5061 static int
5062 tree_compare(const void *l1, const void *l2)
5063 {
5064 const struct line *line1 = (const struct line *) l1;
5065 const struct line *line2 = (const struct line *) l2;
5066 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
5067 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
5068
5069 if (line1->type == LINE_TREE_HEAD)
5070 return -1;
5071 if (line2->type == LINE_TREE_HEAD)
5072 return 1;
5073
5074 switch (get_sort_field(tree_sort_state)) {
5075 case ORDERBY_DATE:
5076 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
5077
5078 case ORDERBY_AUTHOR:
5079 return sort_order(tree_sort_state, ident_compare(entry1->author, entry2->author));
5080
5081 case ORDERBY_NAME:
5082 default:
5083 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
5084 }
5085 }
5086
5087
5088 static struct line *
5089 tree_entry(struct view *view, enum line_type type, const char *path,
5090 const char *mode, const char *id)
5091 {
5092 bool custom = type == LINE_TREE_HEAD || tree_path_is_parent(path);
5093 struct tree_entry *entry;
5094 struct line *line = add_line_alloc(view, &entry, type, strlen(path), custom);
5095
5096 if (!line)
5097 return NULL;
5098
5099 strncpy(entry->name, path, strlen(path));
5100 if (mode)
5101 entry->mode = strtoul(mode, NULL, 8);
5102 if (id)
5103 string_copy_rev(entry->id, id);
5104
5105 return line;
5106 }
5107
5108 static bool
5109 tree_read_date(struct view *view, char *text, struct tree_state *state)
5110 {
5111 if (!text && state->read_date) {
5112 state->read_date = FALSE;
5113 return TRUE;
5114
5115 } else if (!text) {
5116 /* Find next entry to process */
5117 const char *log_file[] = {
5118 "git", "log", opt_encoding_arg, "--no-color", "--pretty=raw",
5119 "--cc", "--raw", view->id, "--", "%(directory)", NULL
5120 };
5121
5122 if (!view->lines) {
5123 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
5124 tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref);
5125 report("Tree is empty");
5126 return TRUE;
5127 }
5128
5129 if (!begin_update(view, opt_cdup, log_file, OPEN_EXTRA)) {
5130 report("Failed to load tree data");
5131 return TRUE;
5132 }
5133
5134 state->read_date = TRUE;
5135 return FALSE;
5136
5137 } else if (*text == 'c' && get_line_type(text) == LINE_COMMIT) {
5138 string_copy_rev(state->commit, text + STRING_SIZE("commit "));
5139
5140 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
5141 parse_author_line(text + STRING_SIZE("author "),
5142 &state->author, &state->author_time);
5143
5144 } else if (*text == ':') {
5145 char *pos;
5146 size_t annotated = 1;
5147 size_t i;
5148
5149 pos = strchr(text, '\t');
5150 if (!pos)
5151 return TRUE;
5152 text = pos + 1;
5153 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
5154 text += strlen(opt_path);
5155 pos = strchr(text, '/');
5156 if (pos)
5157 *pos = 0;
5158
5159 for (i = 1; i < view->lines; i++) {
5160 struct line *line = &view->line[i];
5161 struct tree_entry *entry = line->data;
5162
5163 annotated += !!entry->author;
5164 if (entry->author || strcmp(entry->name, text))
5165 continue;
5166
5167 string_copy_rev(entry->commit, state->commit);
5168 entry->author = state->author;
5169 entry->time = state->author_time;
5170 line->dirty = 1;
5171 break;
5172 }
5173
5174 if (annotated == view->lines)
5175 io_kill(view->pipe);
5176 }
5177 return TRUE;
5178 }
5179
5180 static bool
5181 tree_read(struct view *view, char *text)
5182 {
5183 struct tree_state *state = view->private;
5184 struct tree_entry *data;
5185 struct line *entry, *line;
5186 enum line_type type;
5187 size_t textlen = text ? strlen(text) : 0;
5188 char *path = text + SIZEOF_TREE_ATTR;
5189
5190 if (state->read_date || !text)
5191 return tree_read_date(view, text, state);
5192
5193 if (textlen <= SIZEOF_TREE_ATTR)
5194 return FALSE;
5195 if (view->lines == 0 &&
5196 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
5197 return FALSE;
5198
5199 /* Strip the path part ... */
5200 if (*opt_path) {
5201 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
5202 size_t striplen = strlen(opt_path);
5203
5204 if (pathlen > striplen)
5205 memmove(path, path + striplen,
5206 pathlen - striplen + 1);
5207
5208 /* Insert "link" to parent directory. */
5209 if (view->lines == 1 &&
5210 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
5211 return FALSE;
5212 }
5213
5214 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
5215 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
5216 if (!entry)
5217 return FALSE;
5218 data = entry->data;
5219
5220 /* Skip "Directory ..." and ".." line. */
5221 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
5222 if (tree_compare_entry(line, entry) <= 0)
5223 continue;
5224
5225 memmove(line + 1, line, (entry - line) * sizeof(*entry));
5226
5227 line->data = data;
5228 line->type = type;
5229 for (; line <= entry; line++)
5230 line->dirty = line->cleareol = 1;
5231 return TRUE;
5232 }
5233
5234 if (tree_lineno <= view->pos.lineno)
5235 tree_lineno = view->custom_lines;
5236
5237 if (tree_lineno > view->pos.lineno) {
5238 view->pos.lineno = tree_lineno;
5239 tree_lineno = 0;
5240 }
5241
5242 return TRUE;
5243 }
5244
5245 static bool
5246 tree_draw(struct view *view, struct line *line, unsigned int lineno)
5247 {
5248 struct tree_entry *entry = line->data;
5249
5250 if (line->type == LINE_TREE_HEAD) {
5251 if (draw_text(view, line->type, "Directory path /"))
5252 return TRUE;
5253 } else {
5254 if (draw_mode(view, entry->mode))
5255 return TRUE;
5256
5257 if (draw_author(view, entry->author))
5258 return TRUE;
5259
5260 if (draw_date(view, &entry->time))
5261 return TRUE;
5262
5263 if (opt_show_id && draw_id(view, LINE_ID, entry->commit))
5264 return TRUE;
5265 }
5266
5267 draw_text(view, line->type, entry->name);
5268 return TRUE;
5269 }
5270
5271 static void
5272 open_blob_editor(const char *id, unsigned int lineno)
5273 {
5274 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
5275 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
5276 int fd = mkstemp(file);
5277
5278 if (fd == -1)
5279 report("Failed to create temporary file");
5280 else if (!io_run_append(blob_argv, fd))
5281 report("Failed to save blob data to file");
5282 else
5283 open_editor(file, lineno);
5284 if (fd != -1)
5285 unlink(file);
5286 }
5287
5288 static enum request
5289 tree_request(struct view *view, enum request request, struct line *line)
5290 {
5291 enum open_flags flags;
5292 struct tree_entry *entry = line->data;
5293
5294 switch (request) {
5295 case REQ_VIEW_BLAME:
5296 if (line->type != LINE_TREE_FILE) {
5297 report("Blame only supported for files");
5298 return REQ_NONE;
5299 }
5300
5301 string_copy(opt_ref, view->vid);
5302 return request;
5303
5304 case REQ_EDIT:
5305 if (line->type != LINE_TREE_FILE) {
5306 report("Edit only supported for files");
5307 } else if (!is_head_commit(view->vid)) {
5308 open_blob_editor(entry->id, 0);
5309 } else {
5310 open_editor(opt_file, 0);
5311 }
5312 return REQ_NONE;
5313
5314 case REQ_TOGGLE_SORT_FIELD:
5315 case REQ_TOGGLE_SORT_ORDER:
5316 sort_view(view, request, &tree_sort_state, tree_compare);
5317 return REQ_NONE;
5318
5319 case REQ_PARENT:
5320 if (!*opt_path) {
5321 /* quit view if at top of tree */
5322 return REQ_VIEW_CLOSE;
5323 }
5324 /* fake 'cd ..' */
5325 line = &view->line[1];
5326 break;
5327
5328 case REQ_ENTER:
5329 break;
5330
5331 default:
5332 return request;
5333 }
5334
5335 /* Cleanup the stack if the tree view is at a different tree. */
5336 while (!*opt_path && tree_stack)
5337 pop_tree_stack_entry();
5338
5339 switch (line->type) {
5340 case LINE_TREE_DIR:
5341 /* Depending on whether it is a subdirectory or parent link
5342 * mangle the path buffer. */
5343 if (line == &view->line[1] && *opt_path) {
5344 pop_tree_stack_entry();
5345
5346 } else {
5347 const char *basename = tree_path(line);
5348
5349 push_tree_stack_entry(basename, view->pos.lineno);
5350 }
5351
5352 /* Trees and subtrees share the same ID, so they are not not
5353 * unique like blobs. */
5354 flags = OPEN_RELOAD;
5355 request = REQ_VIEW_TREE;
5356 break;
5357
5358 case LINE_TREE_FILE:
5359 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5360 request = REQ_VIEW_BLOB;
5361 break;
5362
5363 default:
5364 return REQ_NONE;
5365 }
5366
5367 open_view(view, request, flags);
5368 if (request == REQ_VIEW_TREE)
5369 view->pos.lineno = tree_lineno;
5370
5371 return REQ_NONE;
5372 }
5373
5374 static bool
5375 tree_grep(struct view *view, struct line *line)
5376 {
5377 struct tree_entry *entry = line->data;
5378 const char *text[] = {
5379 entry->name,
5380 mkauthor(entry->author, opt_author_width, opt_author),
5381 mkdate(&entry->time, opt_date),
5382 NULL
5383 };
5384
5385 return grep_text(view, text);
5386 }
5387
5388 static void
5389 tree_select(struct view *view, struct line *line)
5390 {
5391 struct tree_entry *entry = line->data;
5392
5393 if (line->type == LINE_TREE_HEAD) {
5394 string_format(view->ref, "Files in /%s", opt_path);
5395 return;
5396 }
5397
5398 if (line->type == LINE_TREE_DIR && tree_path_is_parent(entry->name)) {
5399 string_copy(view->ref, "Open parent directory");
5400 ref_blob[0] = 0;
5401 return;
5402 }
5403
5404 if (line->type == LINE_TREE_FILE) {
5405 string_copy_rev(ref_blob, entry->id);
5406 string_format(opt_file, "%s%s", opt_path, tree_path(line));
5407 }
5408
5409 string_copy_rev(view->ref, entry->id);
5410 }
5411
5412 static bool
5413 tree_open(struct view *view, enum open_flags flags)
5414 {
5415 static const char *tree_argv[] = {
5416 "git", "ls-tree", "%(commit)", "%(directory)", NULL
5417 };
5418
5419 if (string_rev_is_null(ref_commit)) {
5420 report("No tree exists for this commit");
5421 return FALSE;
5422 }
5423
5424 if (view->lines == 0 && opt_prefix[0]) {
5425 char *pos = opt_prefix;
5426
5427 while (pos && *pos) {
5428 char *end = strchr(pos, '/');
5429
5430 if (end)
5431 *end = 0;
5432 push_tree_stack_entry(pos, 0);
5433 pos = end;
5434 if (end) {
5435 *end = '/';
5436 pos++;
5437 }
5438 }
5439
5440 } else if (strcmp(view->vid, view->id)) {
5441 opt_path[0] = 0;
5442 }
5443
5444 return begin_update(view, opt_cdup, tree_argv, flags);
5445 }
5446
5447 static struct view_ops tree_ops = {
5448 "file",
5449 { "tree" },
5450 VIEW_SEND_CHILD_ENTER,
5451 sizeof(struct tree_state),
5452 tree_open,
5453 tree_read,
5454 tree_draw,
5455 tree_request,
5456 tree_grep,
5457 tree_select,
5458 };
5459
5460 static bool
5461 blob_open(struct view *view, enum open_flags flags)
5462 {
5463 static const char *blob_argv[] = {
5464 "git", "cat-file", "blob", "%(blob)", NULL
5465 };
5466
5467 if (!ref_blob[0] && opt_file[0]) {
5468 const char *commit = ref_commit[0] ? ref_commit : "HEAD";
5469 char blob_spec[SIZEOF_STR];
5470 const char *rev_parse_argv[] = {
5471 "git", "rev-parse", blob_spec, NULL
5472 };
5473
5474 if (!string_format(blob_spec, "%s:%s", commit, opt_file) ||
5475 !io_run_buf(rev_parse_argv, ref_blob, sizeof(ref_blob))) {
5476 report("Failed to resolve blob from file name");
5477 return FALSE;
5478 }
5479 }
5480
5481 if (!ref_blob[0]) {
5482 report("No file chosen, press %s to open tree view",
5483 get_view_key(view, REQ_VIEW_TREE));
5484 return FALSE;
5485 }
5486
5487 view->encoding = get_path_encoding(opt_file, opt_encoding);
5488
5489 return begin_update(view, NULL, blob_argv, flags);
5490 }
5491
5492 static bool
5493 blob_read(struct view *view, char *line)
5494 {
5495 if (!line)
5496 return TRUE;
5497 return add_line_text(view, line, LINE_DEFAULT) != NULL;
5498 }
5499
5500 static enum request
5501 blob_request(struct view *view, enum request request, struct line *line)
5502 {
5503 switch (request) {
5504 case REQ_EDIT:
5505 open_blob_editor(view->vid, (line - view->line) + 1);
5506 return REQ_NONE;
5507 default:
5508 return pager_request(view, request, line);
5509 }
5510 }
5511
5512 static struct view_ops blob_ops = {
5513 "line",
5514 { "blob" },
5515 VIEW_NO_FLAGS,
5516 0,
5517 blob_open,
5518 blob_read,
5519 pager_draw,
5520 blob_request,
5521 pager_grep,
5522 pager_select,
5523 };
5524
5525 /*
5526 * Blame backend
5527 *
5528 * Loading the blame view is a two phase job:
5529 *
5530 * 1. File content is read either using opt_file from the
5531 * filesystem or using git-cat-file.
5532 * 2. Then blame information is incrementally added by
5533 * reading output from git-blame.
5534 */
5535
5536 struct blame {
5537 struct blame_commit *commit;
5538 unsigned long lineno;
5539 char text[1];
5540 };
5541
5542 struct blame_state {
5543 struct blame_commit *commit;
5544 int blamed;
5545 bool done_reading;
5546 bool auto_filename_display;
5547 };
5548
5549 static bool
5550 blame_detect_filename_display(struct view *view)
5551 {
5552 bool show_filenames = FALSE;
5553 const char *filename = NULL;
5554 int i;
5555
5556 if (opt_blame_argv) {
5557 for (i = 0; opt_blame_argv[i]; i++) {
5558 if (prefixcmp(opt_blame_argv[i], "-C"))
5559 continue;
5560
5561 show_filenames = TRUE;
5562 }
5563 }
5564
5565 for (i = 0; i < view->lines; i++) {
5566 struct blame *blame = view->line[i].data;
5567
5568 if (blame->commit && blame->commit->id[0]) {
5569 if (!filename)
5570 filename = blame->commit->filename;
5571 else if (strcmp(filename, blame->commit->filename))
5572 show_filenames = TRUE;
5573 }
5574 }
5575
5576 return show_filenames;
5577 }
5578
5579 static bool
5580 blame_open(struct view *view, enum open_flags flags)
5581 {
5582 const char *file_argv[] = { opt_cdup, opt_file , NULL };
5583 char path[SIZEOF_STR];
5584 size_t i;
5585
5586 if (!opt_file[0]) {
5587 report("No file chosen, press %s to open tree view",
5588 get_view_key(view, REQ_VIEW_TREE));
5589 return FALSE;
5590 }
5591
5592 if (!view->prev && *opt_prefix && !(flags & (OPEN_RELOAD | OPEN_REFRESH))) {
5593 string_copy(path, opt_file);
5594 if (!string_format(opt_file, "%s%s", opt_prefix, path)) {
5595 report("Failed to setup the blame view");
5596 return FALSE;
5597 }
5598 }
5599
5600 if (*opt_ref || !begin_update(view, opt_cdup, file_argv, flags)) {
5601 const char *blame_cat_file_argv[] = {
5602 "git", "cat-file", "blob", "%(ref):%(file)", NULL
5603 };
5604
5605 if (!begin_update(view, opt_cdup, blame_cat_file_argv, flags))
5606 return FALSE;
5607 }
5608
5609 /* First pass: remove multiple references to the same commit. */
5610 for (i = 0; i < view->lines; i++) {
5611 struct blame *blame = view->line[i].data;
5612
5613 if (blame->commit && blame->commit->id[0])
5614 blame->commit->id[0] = 0;
5615 else
5616 blame->commit = NULL;
5617 }
5618
5619 /* Second pass: free existing references. */
5620 for (i = 0; i < view->lines; i++) {
5621 struct blame *blame = view->line[i].data;
5622
5623 if (blame->commit)
5624 free(blame->commit);
5625 }
5626
5627 string_format(view->vid, "%s", opt_file);
5628 string_format(view->ref, "%s ...", opt_file);
5629
5630 return TRUE;
5631 }
5632
5633 static struct blame_commit *
5634 get_blame_commit(struct view *view, const char *id)
5635 {
5636 size_t i;
5637
5638 for (i = 0; i < view->lines; i++) {
5639 struct blame *blame = view->line[i].data;
5640
5641 if (!blame->commit)
5642 continue;
5643
5644 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
5645 return blame->commit;
5646 }
5647
5648 {
5649 struct blame_commit *commit = calloc(1, sizeof(*commit));
5650
5651 if (commit)
5652 string_ncopy(commit->id, id, SIZEOF_REV);
5653 return commit;
5654 }
5655 }
5656
5657 static struct blame_commit *
5658 read_blame_commit(struct view *view, const char *text, struct blame_state *state)
5659 {
5660 struct blame_header header;
5661 struct blame_commit *commit;
5662 struct blame *blame;
5663
5664 if (!parse_blame_header(&header, text, view->lines))
5665 return NULL;
5666
5667 commit = get_blame_commit(view, text);
5668 if (!commit)
5669 return NULL;
5670
5671 state->blamed += header.group;
5672 while (header.group--) {
5673 struct line *line = &view->line[header.lineno + header.group - 1];
5674
5675 blame = line->data;
5676 blame->commit = commit;
5677 blame->lineno = header.orig_lineno + header.group - 1;
5678 line->dirty = 1;
5679 }
5680
5681 return commit;
5682 }
5683
5684 static bool
5685 blame_read_file(struct view *view, const char *text, struct blame_state *state)
5686 {
5687 if (!text) {
5688 const char *blame_argv[] = {
5689 "git", "blame", opt_encoding_arg, "%(blameargs)", "--incremental",
5690 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
5691 };
5692
5693 if (view->lines == 0 && !view->prev)
5694 die("No blame exist for %s", view->vid);
5695
5696 if (view->lines == 0 || !begin_update(view, opt_cdup, blame_argv, OPEN_EXTRA)) {
5697 report("Failed to load blame data");
5698 return TRUE;
5699 }
5700
5701 if (opt_goto_line > 0) {
5702 select_view_line(view, opt_goto_line);
5703 opt_goto_line = 0;
5704 }
5705
5706 state->done_reading = TRUE;
5707 return FALSE;
5708
5709 } else {
5710 size_t textlen = strlen(text);
5711 struct blame *blame;
5712
5713 if (!add_line_alloc(view, &blame, LINE_ID, textlen, FALSE))
5714 return FALSE;
5715
5716 blame->commit = NULL;
5717 strncpy(blame->text, text, textlen);
5718 blame->text[textlen] = 0;
5719 return TRUE;
5720 }
5721 }
5722
5723 static bool
5724 blame_read(struct view *view, char *line)
5725 {
5726 struct blame_state *state = view->private;
5727
5728 if (!state->done_reading)
5729 return blame_read_file(view, line, state);
5730
5731 if (!line) {
5732 state->auto_filename_display = blame_detect_filename_display(view);
5733 string_format(view->ref, "%s", view->vid);
5734 if (view_is_displayed(view)) {
5735 update_view_title(view);
5736 redraw_view_from(view, 0);
5737 }
5738 return TRUE;
5739 }
5740
5741 if (!state->commit) {
5742 state->commit = read_blame_commit(view, line, state);
5743 string_format(view->ref, "%s %2zd%%", view->vid,
5744 view->lines ? state->blamed * 100 / view->lines : 0);
5745
5746 } else if (parse_blame_info(state->commit, line)) {
5747 state->commit = NULL;
5748 }
5749
5750 return TRUE;
5751 }
5752
5753 static bool
5754 blame_draw(struct view *view, struct line *line, unsigned int lineno)
5755 {
5756 struct blame_state *state = view->private;
5757 struct blame *blame = line->data;
5758 struct time *time = NULL;
5759 const char *id = NULL, *filename = NULL;
5760 const struct ident *author = NULL;
5761 enum line_type id_type = LINE_ID;
5762 static const enum line_type blame_colors[] = {
5763 LINE_PALETTE_0,
5764 LINE_PALETTE_1,
5765 LINE_PALETTE_2,
5766 LINE_PALETTE_3,
5767 LINE_PALETTE_4,
5768 LINE_PALETTE_5,
5769 LINE_PALETTE_6,
5770 };
5771
5772 #define BLAME_COLOR(i) \
5773 (blame_colors[(i) % ARRAY_SIZE(blame_colors)])
5774
5775 if (blame->commit && *blame->commit->filename) {
5776 id = blame->commit->id;
5777 author = blame->commit->author;
5778 filename = blame->commit->filename;
5779 time = &blame->commit->time;
5780 id_type = BLAME_COLOR((long) blame->commit);
5781 }
5782
5783 if (draw_date(view, time))
5784 return TRUE;
5785
5786 if (draw_author(view, author))
5787 return TRUE;
5788
5789 if (draw_filename(view, filename, state->auto_filename_display))
5790 return TRUE;
5791
5792 if (draw_id(view, id_type, id))
5793 return TRUE;
5794
5795 if (draw_lineno(view, lineno))
5796 return TRUE;
5797
5798 draw_text(view, LINE_DEFAULT, blame->text);
5799 return TRUE;
5800 }
5801
5802 static bool
5803 check_blame_commit(struct blame *blame, bool check_null_id)
5804 {
5805 if (!blame->commit)
5806 report("Commit data not loaded yet");
5807 else if (check_null_id && string_rev_is_null(blame->commit->id))
5808 report("No commit exist for the selected line");
5809 else
5810 return TRUE;
5811 return FALSE;
5812 }
5813
5814 static void
5815 setup_blame_parent_line(struct view *view, struct blame *blame)
5816 {
5817 char from[SIZEOF_REF + SIZEOF_STR];
5818 char to[SIZEOF_REF + SIZEOF_STR];
5819 const char *diff_tree_argv[] = {
5820 "git", "diff", opt_encoding_arg, "--no-textconv", "--no-extdiff",
5821 "--no-color", "-U0", from, to, "--", NULL
5822 };
5823 struct io io;
5824 int parent_lineno = -1;
5825 int blamed_lineno = -1;
5826 char *line;
5827
5828 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
5829 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
5830 !io_run(&io, IO_RD, NULL, diff_tree_argv))
5831 return;
5832
5833 while ((line = io_get(&io, '\n', TRUE))) {
5834 if (*line == '@') {
5835 char *pos = strchr(line, '+');
5836
5837 parent_lineno = atoi(line + 4);
5838 if (pos)
5839 blamed_lineno = atoi(pos + 1);
5840
5841 } else if (*line == '+' && parent_lineno != -1) {
5842 if (blame->lineno == blamed_lineno - 1 &&
5843 !strcmp(blame->text, line + 1)) {
5844 view->pos.lineno = parent_lineno ? parent_lineno - 1 : 0;
5845 break;
5846 }
5847 blamed_lineno++;
5848 }
5849 }
5850
5851 io_done(&io);
5852 }
5853
5854 static enum request
5855 blame_request(struct view *view, enum request request, struct line *line)
5856 {
5857 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5858 struct blame *blame = line->data;
5859
5860 switch (request) {
5861 case REQ_VIEW_BLAME:
5862 if (check_blame_commit(blame, TRUE)) {
5863 string_copy(opt_ref, blame->commit->id);
5864 string_copy(opt_file, blame->commit->filename);
5865 if (blame->lineno)
5866 view->pos.lineno = blame->lineno;
5867 reload_view(view);
5868 }
5869 break;
5870
5871 case REQ_PARENT:
5872 if (!check_blame_commit(blame, TRUE))
5873 break;
5874 if (!*blame->commit->parent_id) {
5875 report("The selected commit has no parents");
5876 } else {
5877 string_copy_rev(opt_ref, blame->commit->parent_id);
5878 string_copy(opt_file, blame->commit->parent_filename);
5879 setup_blame_parent_line(view, blame);
5880 opt_goto_line = blame->lineno;
5881 reload_view(view);
5882 }
5883 break;
5884
5885 case REQ_ENTER:
5886 if (!check_blame_commit(blame, FALSE))
5887 break;
5888
5889 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
5890 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
5891 break;
5892
5893 if (string_rev_is_null(blame->commit->id)) {
5894 struct view *diff = VIEW(REQ_VIEW_DIFF);
5895 const char *diff_parent_argv[] = {
5896 GIT_DIFF_BLAME(opt_encoding_arg,
5897 opt_diff_context_arg,
5898 opt_ignore_space_arg, view->vid)
5899 };
5900 const char *diff_no_parent_argv[] = {
5901 GIT_DIFF_BLAME_NO_PARENT(opt_encoding_arg,
5902 opt_diff_context_arg,
5903 opt_ignore_space_arg, view->vid)
5904 };
5905 const char **diff_index_argv = *blame->commit->parent_id
5906 ? diff_parent_argv : diff_no_parent_argv;
5907
5908 open_argv(view, diff, diff_index_argv, NULL, flags);
5909 if (diff->pipe)
5910 string_copy_rev(diff->ref, NULL_ID);
5911 } else {
5912 open_view(view, REQ_VIEW_DIFF, flags);
5913 }
5914 break;
5915
5916 default:
5917 return request;
5918 }
5919
5920 return REQ_NONE;
5921 }
5922
5923 static bool
5924 blame_grep(struct view *view, struct line *line)
5925 {
5926 struct blame *blame = line->data;
5927 struct blame_commit *commit = blame->commit;
5928 const char *text[] = {
5929 blame->text,
5930 commit ? commit->title : "",
5931 commit ? commit->id : "",
5932 commit ? mkauthor(commit->author, opt_author_width, opt_author) : "",
5933 commit ? mkdate(&commit->time, opt_date) : "",
5934 NULL
5935 };
5936
5937 return grep_text(view, text);
5938 }
5939
5940 static void
5941 blame_select(struct view *view, struct line *line)
5942 {
5943 struct blame *blame = line->data;
5944 struct blame_commit *commit = blame->commit;
5945
5946 if (!commit)
5947 return;
5948
5949 if (string_rev_is_null(commit->id))
5950 string_ncopy(ref_commit, "HEAD", 4);
5951 else
5952 string_copy_rev(ref_commit, commit->id);
5953 }
5954
5955 static struct view_ops blame_ops = {
5956 "line",
5957 { "blame" },
5958 VIEW_ALWAYS_LINENO | VIEW_SEND_CHILD_ENTER,
5959 sizeof(struct blame_state),
5960 blame_open,
5961 blame_read,
5962 blame_draw,
5963 blame_request,
5964 blame_grep,
5965 blame_select,
5966 };
5967
5968 /*
5969 * Branch backend
5970 */
5971
5972 struct branch {
5973 const struct ident *author; /* Author of the last commit. */
5974 struct time time; /* Date of the last activity. */
5975 char title[128]; /* First line of the commit message. */
5976 const struct ref *ref; /* Name and commit ID information. */
5977 };
5978
5979 static const struct ref branch_all;
5980 #define branch_is_all(branch) ((branch)->ref == &branch_all)
5981
5982 static const enum sort_field branch_sort_fields[] = {
5983 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
5984 };
5985 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
5986
5987 struct branch_state {
5988 char id[SIZEOF_REV];
5989 size_t max_ref_length;
5990 };
5991
5992 static int
5993 branch_compare(const void *l1, const void *l2)
5994 {
5995 const struct branch *branch1 = ((const struct line *) l1)->data;
5996 const struct branch *branch2 = ((const struct line *) l2)->data;
5997
5998 if (branch_is_all(branch1))
5999 return -1;
6000 else if (branch_is_all(branch2))
6001 return 1;
6002
6003 switch (get_sort_field(branch_sort_state)) {
6004 case ORDERBY_DATE:
6005 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
6006
6007 case ORDERBY_AUTHOR:
6008 return sort_order(branch_sort_state, ident_compare(branch1->author, branch2->author));
6009
6010 case ORDERBY_NAME:
6011 default:
6012 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
6013 }
6014 }
6015
6016 static bool
6017 branch_draw(struct view *view, struct line *line, unsigned int lineno)
6018 {
6019 struct branch_state *state = view->private;
6020 struct branch *branch = line->data;
6021 enum line_type type = branch_is_all(branch) ? LINE_DEFAULT : get_line_type_from_ref(branch->ref);
6022 const char *branch_name = branch_is_all(branch) ? "All branches" : branch->ref->name;
6023
6024 if (draw_date(view, &branch->time))
6025 return TRUE;
6026
6027 if (draw_author(view, branch->author))
6028 return TRUE;
6029
6030 if (draw_field(view, type, branch_name, state->max_ref_length, FALSE))
6031 return TRUE;
6032
6033 if (opt_show_id && draw_id(view, LINE_ID, branch->ref->id))
6034 return TRUE;
6035
6036 draw_text(view, LINE_DEFAULT, branch->title);
6037 return TRUE;
6038 }
6039
6040 static enum request
6041 branch_request(struct view *view, enum request request, struct line *line)
6042 {
6043 struct branch *branch = line->data;
6044
6045 switch (request) {
6046 case REQ_REFRESH:
6047 load_refs();
6048 refresh_view(view);
6049 return REQ_NONE;
6050
6051 case REQ_TOGGLE_SORT_FIELD:
6052 case REQ_TOGGLE_SORT_ORDER:
6053 sort_view(view, request, &branch_sort_state, branch_compare);
6054 return REQ_NONE;
6055
6056 case REQ_ENTER:
6057 {
6058 const struct ref *ref = branch->ref;
6059 const char *all_branches_argv[] = {
6060 GIT_MAIN_LOG(opt_encoding_arg, "", branch_is_all(branch) ? "--all" : ref->name, "")
6061 };
6062 struct view *main_view = VIEW(REQ_VIEW_MAIN);
6063
6064 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
6065 return REQ_NONE;
6066 }
6067 case REQ_JUMP_COMMIT:
6068 {
6069 int lineno;
6070
6071 for (lineno = 0; lineno < view->lines; lineno++) {
6072 struct branch *branch = view->line[lineno].data;
6073
6074 if (!strncasecmp(branch->ref->id, opt_search, strlen(opt_search))) {
6075 select_view_line(view, lineno);
6076 report_clear();
6077 return REQ_NONE;
6078 }
6079 }
6080 }
6081 default:
6082 return request;
6083 }
6084 }
6085
6086 static bool
6087 branch_read(struct view *view, char *line)
6088 {
6089 struct branch_state *state = view->private;
6090 const char *title = NULL;
6091 const struct ident *author = NULL;
6092 struct time time = {};
6093 size_t i;
6094
6095 if (!line)
6096 return TRUE;
6097
6098 switch (get_line_type(line)) {
6099 case LINE_COMMIT:
6100 string_copy_rev(state->id, line + STRING_SIZE("commit "));
6101 return TRUE;
6102
6103 case LINE_AUTHOR:
6104 parse_author_line(line + STRING_SIZE("author "), &author, &time);
6105
6106 default:
6107 title = line + STRING_SIZE("title ");
6108 }
6109
6110 for (i = 0; i < view->lines; i++) {
6111 struct branch *branch = view->line[i].data;
6112
6113 if (strcmp(branch->ref->id, state->id))
6114 continue;
6115
6116 if (author) {
6117 branch->author = author;
6118 branch->time = time;
6119 }
6120
6121 if (title)
6122 string_expand(branch->title, sizeof(branch->title), title, 1);
6123
6124 view->line[i].dirty = TRUE;
6125 }
6126
6127 return TRUE;
6128 }
6129
6130 static bool
6131 branch_open_visitor(void *data, const struct ref *ref)
6132 {
6133 struct view *view = data;
6134 struct branch_state *state = view->private;
6135 struct branch *branch;
6136 size_t ref_length;
6137
6138 if (ref->tag || ref->ltag)
6139 return TRUE;
6140
6141 if (!add_line_alloc(view, &branch, LINE_DEFAULT, 0, ref == &branch_all))
6142 return FALSE;
6143
6144 ref_length = strlen(ref->name);
6145 if (ref_length > state->max_ref_length)
6146 state->max_ref_length = ref_length;
6147
6148 branch->ref = ref;
6149 return TRUE;
6150 }
6151
6152 static bool
6153 branch_open(struct view *view, enum open_flags flags)
6154 {
6155 const char *branch_log[] = {
6156 "git", "log", opt_encoding_arg, "--no-color", "--date=raw",
6157 "--pretty=format:commit %H%nauthor %an <%ae> %ad%ntitle %s",
6158 "--all", "--simplify-by-decoration", NULL
6159 };
6160
6161 if (!begin_update(view, NULL, branch_log, OPEN_RELOAD)) {
6162 report("Failed to load branch data");
6163 return FALSE;
6164 }
6165
6166 branch_open_visitor(view, &branch_all);
6167 foreach_ref(branch_open_visitor, view);
6168
6169 return TRUE;
6170 }
6171
6172 static bool
6173 branch_grep(struct view *view, struct line *line)
6174 {
6175 struct branch *branch = line->data;
6176 const char *text[] = {
6177 branch->ref->name,
6178 mkauthor(branch->author, opt_author_width, opt_author),
6179 NULL
6180 };
6181
6182 return grep_text(view, text);
6183 }
6184
6185 static void
6186 branch_select(struct view *view, struct line *line)
6187 {
6188 struct branch *branch = line->data;
6189
6190 if (branch_is_all(branch)) {
6191 string_copy(view->ref, "All branches");
6192 return;
6193 }
6194 string_copy_rev(view->ref, branch->ref->id);
6195 string_copy_rev(ref_commit, branch->ref->id);
6196 string_copy_rev(ref_head, branch->ref->id);
6197 string_copy_rev(ref_branch, branch->ref->name);
6198 }
6199
6200 static struct view_ops branch_ops = {
6201 "branch",
6202 { "branch" },
6203 VIEW_NO_FLAGS,
6204 sizeof(struct branch_state),
6205 branch_open,
6206 branch_read,
6207 branch_draw,
6208 branch_request,
6209 branch_grep,
6210 branch_select,
6211 };
6212
6213 /*
6214 * Status backend
6215 */
6216
6217 struct status {
6218 char status;
6219 struct {
6220 mode_t mode;
6221 char rev[SIZEOF_REV];
6222 char name[SIZEOF_STR];
6223 } old;
6224 struct {
6225 mode_t mode;
6226 char rev[SIZEOF_REV];
6227 char name[SIZEOF_STR];
6228 } new;
6229 };
6230
6231 static char status_onbranch[SIZEOF_STR];
6232 static struct status stage_status;
6233 static enum line_type stage_line_type;
6234
6235 DEFINE_ALLOCATOR(realloc_ints, int, 32)
6236
6237 /* This should work even for the "On branch" line. */
6238 static inline bool
6239 status_has_none(struct view *view, struct line *line)
6240 {
6241 return view_has_line(view, line) && !line[1].data;
6242 }
6243
6244 /* Get fields from the diff line:
6245 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
6246 */
6247 static inline bool
6248 status_get_diff(struct status *file, const char *buf, size_t bufsize)
6249 {
6250 const char *old_mode = buf + 1;
6251 const char *new_mode = buf + 8;
6252 const char *old_rev = buf + 15;
6253 const char *new_rev = buf + 56;
6254 const char *status = buf + 97;
6255
6256 if (bufsize < 98 ||
6257 old_mode[-1] != ':' ||
6258 new_mode[-1] != ' ' ||
6259 old_rev[-1] != ' ' ||
6260 new_rev[-1] != ' ' ||
6261 status[-1] != ' ')
6262 return FALSE;
6263
6264 file->status = *status;
6265
6266 string_copy_rev(file->old.rev, old_rev);
6267 string_copy_rev(file->new.rev, new_rev);
6268
6269 file->old.mode = strtoul(old_mode, NULL, 8);
6270 file->new.mode = strtoul(new_mode, NULL, 8);
6271
6272 file->old.name[0] = file->new.name[0] = 0;
6273
6274 return TRUE;
6275 }
6276
6277 static bool
6278 status_run(struct view *view, const char *argv[], char status, enum line_type type)
6279 {
6280 struct status *unmerged = NULL;
6281 char *buf;
6282 struct io io;
6283
6284 if (!io_run(&io, IO_RD, opt_cdup, argv))
6285 return FALSE;
6286
6287 add_line_nodata(view, type);
6288
6289 while ((buf = io_get(&io, 0, TRUE))) {
6290 struct status *file = unmerged;
6291
6292 if (!file) {
6293 if (!add_line_alloc(view, &file, type, 0, FALSE))
6294 goto error_out;
6295 }
6296
6297 /* Parse diff info part. */
6298 if (status) {
6299 file->status = status;
6300 if (status == 'A')
6301 string_copy(file->old.rev, NULL_ID);
6302
6303 } else if (!file->status || file == unmerged) {
6304 if (!status_get_diff(file, buf, strlen(buf)))
6305 goto error_out;
6306
6307 buf = io_get(&io, 0, TRUE);
6308 if (!buf)
6309 break;
6310
6311 /* Collapse all modified entries that follow an
6312 * associated unmerged entry. */
6313 if (unmerged == file) {
6314 unmerged->status = 'U';
6315 unmerged = NULL;
6316 } else if (file->status == 'U') {
6317 unmerged = file;
6318 }
6319 }
6320
6321 /* Grab the old name for rename/copy. */
6322 if (!*file->old.name &&
6323 (file->status == 'R' || file->status == 'C')) {
6324 string_ncopy(file->old.name, buf, strlen(buf));
6325
6326 buf = io_get(&io, 0, TRUE);
6327 if (!buf)
6328 break;
6329 }
6330
6331 /* git-ls-files just delivers a NUL separated list of
6332 * file names similar to the second half of the
6333 * git-diff-* output. */
6334 string_ncopy(file->new.name, buf, strlen(buf));
6335 if (!*file->old.name)
6336 string_copy(file->old.name, file->new.name);
6337 file = NULL;
6338 }
6339
6340 if (io_error(&io)) {
6341 error_out:
6342 io_done(&io);
6343 return FALSE;
6344 }
6345
6346 if (!view->line[view->lines - 1].data)
6347 add_line_nodata(view, LINE_STAT_NONE);
6348
6349 io_done(&io);
6350 return TRUE;
6351 }
6352
6353 static const char *status_diff_index_argv[] = { GIT_DIFF_STAGED_FILES("-z") };
6354 static const char *status_diff_files_argv[] = { GIT_DIFF_UNSTAGED_FILES("-z") };
6355
6356 static const char *status_list_other_argv[] = {
6357 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
6358 };
6359
6360 static const char *status_list_no_head_argv[] = {
6361 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
6362 };
6363
6364 static const char *update_index_argv[] = {
6365 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
6366 };
6367
6368 /* Restore the previous line number to stay in the context or select a
6369 * line with something that can be updated. */
6370 static void
6371 status_restore(struct view *view)
6372 {
6373 if (!check_position(&view->prev_pos))
6374 return;
6375
6376 if (view->prev_pos.lineno >= view->lines)
6377 view->prev_pos.lineno = view->lines - 1;
6378 while (view->prev_pos.lineno < view->lines && !view->line[view->prev_pos.lineno].data)
6379 view->prev_pos.lineno++;
6380 while (view->prev_pos.lineno > 0 && !view->line[view->prev_pos.lineno].data)
6381 view->prev_pos.lineno--;
6382
6383 /* If the above fails, always skip the "On branch" line. */
6384 if (view->prev_pos.lineno < view->lines)
6385 view->pos.lineno = view->prev_pos.lineno;
6386 else
6387 view->pos.lineno = 1;
6388
6389 if (view->prev_pos.offset > view->pos.lineno)
6390 view->pos.offset = view->pos.lineno;
6391 else if (view->prev_pos.offset < view->lines)
6392 view->pos.offset = view->prev_pos.offset;
6393
6394 clear_position(&view->prev_pos);
6395 }
6396
6397 static void
6398 status_update_onbranch(void)
6399 {
6400 static const char *paths[][2] = {
6401 { "rebase-apply/rebasing", "Rebasing" },
6402 { "rebase-apply/applying", "Applying mailbox" },
6403 { "rebase-apply/", "Rebasing mailbox" },
6404 { "rebase-merge/interactive", "Interactive rebase" },
6405 { "rebase-merge/", "Rebase merge" },
6406 { "MERGE_HEAD", "Merging" },
6407 { "BISECT_LOG", "Bisecting" },
6408 { "HEAD", "On branch" },
6409 };
6410 char buf[SIZEOF_STR];
6411 struct stat stat;
6412 int i;
6413
6414 if (is_initial_commit()) {
6415 string_copy(status_onbranch, "Initial commit");
6416 return;
6417 }
6418
6419 for (i = 0; i < ARRAY_SIZE(paths); i++) {
6420 char *head = opt_head;
6421
6422 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
6423 lstat(buf, &stat) < 0)
6424 continue;
6425
6426 if (!*opt_head) {
6427 struct io io;
6428
6429 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
6430 io_read_buf(&io, buf, sizeof(buf))) {
6431 head = buf;
6432 if (!prefixcmp(head, "refs/heads/"))
6433 head += STRING_SIZE("refs/heads/");
6434 }
6435 }
6436
6437 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
6438 string_copy(status_onbranch, opt_head);
6439 return;
6440 }
6441
6442 string_copy(status_onbranch, "Not currently on any branch");
6443 }
6444
6445 /* First parse staged info using git-diff-index(1), then parse unstaged
6446 * info using git-diff-files(1), and finally untracked files using
6447 * git-ls-files(1). */
6448 static bool
6449 status_open(struct view *view, enum open_flags flags)
6450 {
6451 const char **staged_argv = is_initial_commit() ?
6452 status_list_no_head_argv : status_diff_index_argv;
6453 char staged_status = staged_argv == status_list_no_head_argv ? 'A' : 0;
6454
6455 if (opt_is_inside_work_tree == FALSE) {
6456 report("The status view requires a working tree");
6457 return FALSE;
6458 }
6459
6460 reset_view(view);
6461
6462 add_line_nodata(view, LINE_STAT_HEAD);
6463 status_update_onbranch();
6464
6465 io_run_bg(update_index_argv);
6466
6467 if (!opt_untracked_dirs_content)
6468 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
6469
6470 if (!status_run(view, staged_argv, staged_status, LINE_STAT_STAGED) ||
6471 !status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
6472 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED)) {
6473 report("Failed to load status data");
6474 return FALSE;
6475 }
6476
6477 /* Restore the exact position or use the specialized restore
6478 * mode? */
6479 status_restore(view);
6480 return TRUE;
6481 }
6482
6483 static bool
6484 status_draw(struct view *view, struct line *line, unsigned int lineno)
6485 {
6486 struct status *status = line->data;
6487 enum line_type type;
6488 const char *text;
6489
6490 if (!status) {
6491 switch (line->type) {
6492 case LINE_STAT_STAGED:
6493 type = LINE_STAT_SECTION;
6494 text = "Changes to be committed:";
6495 break;
6496
6497 case LINE_STAT_UNSTAGED:
6498 type = LINE_STAT_SECTION;
6499 text = "Changed but not updated:";
6500 break;
6501
6502 case LINE_STAT_UNTRACKED:
6503 type = LINE_STAT_SECTION;
6504 text = "Untracked files:";
6505 break;
6506
6507 case LINE_STAT_NONE:
6508 type = LINE_DEFAULT;
6509 text = " (no files)";
6510 break;
6511
6512 case LINE_STAT_HEAD:
6513 type = LINE_STAT_HEAD;
6514 text = status_onbranch;
6515 break;
6516
6517 default:
6518 return FALSE;
6519 }
6520 } else {
6521 static char buf[] = { '?', ' ', ' ', ' ', 0 };
6522
6523 buf[0] = status->status;
6524 if (draw_text(view, line->type, buf))
6525 return TRUE;
6526 type = LINE_DEFAULT;
6527 text = status->new.name;
6528 }
6529
6530 draw_text(view, type, text);
6531 return TRUE;
6532 }
6533
6534 static enum request
6535 status_enter(struct view *view, struct line *line)
6536 {
6537 struct status *status = line->data;
6538 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
6539
6540 if (line->type == LINE_STAT_NONE ||
6541 (!status && line[1].type == LINE_STAT_NONE)) {
6542 report("No file to diff");
6543 return REQ_NONE;
6544 }
6545
6546 switch (line->type) {
6547 case LINE_STAT_STAGED:
6548 case LINE_STAT_UNSTAGED:
6549 break;
6550
6551 case LINE_STAT_UNTRACKED:
6552 if (!status) {
6553 report("No file to show");
6554 return REQ_NONE;
6555 }
6556
6557 if (!suffixcmp(status->new.name, -1, "/")) {
6558 report("Cannot display a directory");
6559 return REQ_NONE;
6560 }
6561 break;
6562
6563 case LINE_STAT_HEAD:
6564 return REQ_NONE;
6565
6566 default:
6567 die("line type %d not handled in switch", line->type);
6568 }
6569
6570 if (status) {
6571 stage_status = *status;
6572 } else {
6573 memset(&stage_status, 0, sizeof(stage_status));
6574 }
6575
6576 stage_line_type = line->type;
6577
6578 open_view(view, REQ_VIEW_STAGE, flags);
6579 return REQ_NONE;
6580 }
6581
6582 static bool
6583 status_exists(struct view *view, struct status *status, enum line_type type)
6584 {
6585 unsigned long lineno;
6586
6587 for (lineno = 0; lineno < view->lines; lineno++) {
6588 struct line *line = &view->line[lineno];
6589 struct status *pos = line->data;
6590
6591 if (line->type != type)
6592 continue;
6593 if (!pos && (!status || !status->status) && line[1].data) {
6594 select_view_line(view, lineno);
6595 return TRUE;
6596 }
6597 if (pos && !strcmp(status->new.name, pos->new.name)) {
6598 select_view_line(view, lineno);
6599 return TRUE;
6600 }
6601 }
6602
6603 return FALSE;
6604 }
6605
6606
6607 static bool
6608 status_update_prepare(struct io *io, enum line_type type)
6609 {
6610 const char *staged_argv[] = {
6611 "git", "update-index", "-z", "--index-info", NULL
6612 };
6613 const char *others_argv[] = {
6614 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
6615 };
6616
6617 switch (type) {
6618 case LINE_STAT_STAGED:
6619 return io_run(io, IO_WR, opt_cdup, staged_argv);
6620
6621 case LINE_STAT_UNSTAGED:
6622 case LINE_STAT_UNTRACKED:
6623 return io_run(io, IO_WR, opt_cdup, others_argv);
6624
6625 default:
6626 die("line type %d not handled in switch", type);
6627 return FALSE;
6628 }
6629 }
6630
6631 static bool
6632 status_update_write(struct io *io, struct status *status, enum line_type type)
6633 {
6634 switch (type) {
6635 case LINE_STAT_STAGED:
6636 return io_printf(io, "%06o %s\t%s%c", status->old.mode,
6637 status->old.rev, status->old.name, 0);
6638
6639 case LINE_STAT_UNSTAGED:
6640 case LINE_STAT_UNTRACKED:
6641 return io_printf(io, "%s%c", status->new.name, 0);
6642
6643 default:
6644 die("line type %d not handled in switch", type);
6645 return FALSE;
6646 }
6647 }
6648
6649 static bool
6650 status_update_file(struct status *status, enum line_type type)
6651 {
6652 struct io io;
6653 bool result;
6654
6655 if (!status_update_prepare(&io, type))
6656 return FALSE;
6657
6658 result = status_update_write(&io, status, type);
6659 return io_done(&io) && result;
6660 }
6661
6662 static bool
6663 status_update_files(struct view *view, struct line *line)
6664 {
6665 char buf[sizeof(view->ref)];
6666 struct io io;
6667 bool result = TRUE;
6668 struct line *pos;
6669 int files = 0;
6670 int file, done;
6671 int cursor_y = -1, cursor_x = -1;
6672
6673 if (!status_update_prepare(&io, line->type))
6674 return FALSE;
6675
6676 for (pos = line; view_has_line(view, pos) && pos->data; pos++)
6677 files++;
6678
6679 string_copy(buf, view->ref);
6680 getsyx(cursor_y, cursor_x);
6681 for (file = 0, done = 5; result && file < files; line++, file++) {
6682 int almost_done = file * 100 / files;
6683
6684 if (almost_done > done) {
6685 done = almost_done;
6686 string_format(view->ref, "updating file %u of %u (%d%% done)",
6687 file, files, done);
6688 update_view_title(view);
6689 setsyx(cursor_y, cursor_x);
6690 doupdate();
6691 }
6692 result = status_update_write(&io, line->data, line->type);
6693 }
6694 string_copy(view->ref, buf);
6695
6696 return io_done(&io) && result;
6697 }
6698
6699 static bool
6700 status_update(struct view *view)
6701 {
6702 struct line *line = &view->line[view->pos.lineno];
6703
6704 assert(view->lines);
6705
6706 if (!line->data) {
6707 if (status_has_none(view, line)) {
6708 report("Nothing to update");
6709 return FALSE;
6710 }
6711
6712 if (!status_update_files(view, line + 1)) {
6713 report("Failed to update file status");
6714 return FALSE;
6715 }
6716
6717 } else if (!status_update_file(line->data, line->type)) {
6718 report("Failed to update file status");
6719 return FALSE;
6720 }
6721
6722 return TRUE;
6723 }
6724
6725 static bool
6726 status_revert(struct status *status, enum line_type type, bool has_none)
6727 {
6728 if (!status || type != LINE_STAT_UNSTAGED) {
6729 if (type == LINE_STAT_STAGED) {
6730 report("Cannot revert changes to staged files");
6731 } else if (type == LINE_STAT_UNTRACKED) {
6732 report("Cannot revert changes to untracked files");
6733 } else if (has_none) {
6734 report("Nothing to revert");
6735 } else {
6736 report("Cannot revert changes to multiple files");
6737 }
6738
6739 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
6740 char mode[10] = "100644";
6741 const char *reset_argv[] = {
6742 "git", "update-index", "--cacheinfo", mode,
6743 status->old.rev, status->old.name, NULL
6744 };
6745 const char *checkout_argv[] = {
6746 "git", "checkout", "--", status->old.name, NULL
6747 };
6748
6749 if (status->status == 'U') {
6750 string_format(mode, "%5o", status->old.mode);
6751
6752 if (status->old.mode == 0 && status->new.mode == 0) {
6753 reset_argv[2] = "--force-remove";
6754 reset_argv[3] = status->old.name;
6755 reset_argv[4] = NULL;
6756 }
6757
6758 if (!io_run_fg(reset_argv, opt_cdup))
6759 return FALSE;
6760 if (status->old.mode == 0 && status->new.mode == 0)
6761 return TRUE;
6762 }
6763
6764 return io_run_fg(checkout_argv, opt_cdup);
6765 }
6766
6767 return FALSE;
6768 }
6769
6770 static enum request
6771 status_request(struct view *view, enum request request, struct line *line)
6772 {
6773 struct status *status = line->data;
6774
6775 switch (request) {
6776 case REQ_STATUS_UPDATE:
6777 if (!status_update(view))
6778 return REQ_NONE;
6779 break;
6780
6781 case REQ_STATUS_REVERT:
6782 if (!status_revert(status, line->type, status_has_none(view, line)))
6783 return REQ_NONE;
6784 break;
6785
6786 case REQ_STATUS_MERGE:
6787 if (!status || status->status != 'U') {
6788 report("Merging only possible for files with unmerged status ('U').");
6789 return REQ_NONE;
6790 }
6791 open_mergetool(status->new.name);
6792 break;
6793
6794 case REQ_EDIT:
6795 if (!status)
6796 return request;
6797 if (status->status == 'D') {
6798 report("File has been deleted.");
6799 return REQ_NONE;
6800 }
6801
6802 open_editor(status->new.name, 0);
6803 break;
6804
6805 case REQ_VIEW_BLAME:
6806 if (status)
6807 opt_ref[0] = 0;
6808 return request;
6809
6810 case REQ_ENTER:
6811 /* After returning the status view has been split to
6812 * show the stage view. No further reloading is
6813 * necessary. */
6814 return status_enter(view, line);
6815
6816 case REQ_REFRESH:
6817 /* Load the current branch information and then the view. */
6818 load_refs();
6819 break;
6820
6821 default:
6822 return request;
6823 }
6824
6825 refresh_view(view);
6826
6827 return REQ_NONE;
6828 }
6829
6830 static bool
6831 status_stage_info_(char *buf, size_t bufsize,
6832 enum line_type type, struct status *status)
6833 {
6834 const char *file = status ? status->new.name : "";
6835 const char *info;
6836
6837 switch (type) {
6838 case LINE_STAT_STAGED:
6839 if (status && status->status)
6840 info = "Staged changes to %s";
6841 else
6842 info = "Staged changes";
6843 break;
6844
6845 case LINE_STAT_UNSTAGED:
6846 if (status && status->status)
6847 info = "Unstaged changes to %s";
6848 else
6849 info = "Unstaged changes";
6850 break;
6851
6852 case LINE_STAT_UNTRACKED:
6853 info = "Untracked file %s";
6854 break;
6855
6856 case LINE_STAT_HEAD:
6857 default:
6858 info = "";
6859 }
6860
6861 return string_nformat(buf, bufsize, NULL, info, file);
6862 }
6863 #define status_stage_info(buf, type, status) \
6864 status_stage_info_(buf, sizeof(buf), type, status)
6865
6866 static void
6867 status_select(struct view *view, struct line *line)
6868 {
6869 struct status *status = line->data;
6870 char file[SIZEOF_STR] = "all files";
6871 const char *text;
6872 const char *key;
6873
6874 if (status && !string_format(file, "'%s'", status->new.name))
6875 return;
6876
6877 if (!status && line[1].type == LINE_STAT_NONE)
6878 line++;
6879
6880 switch (line->type) {
6881 case LINE_STAT_STAGED:
6882 text = "Press %s to unstage %s for commit";
6883 break;
6884
6885 case LINE_STAT_UNSTAGED:
6886 text = "Press %s to stage %s for commit";
6887 break;
6888
6889 case LINE_STAT_UNTRACKED:
6890 text = "Press %s to stage %s for addition";
6891 break;
6892
6893 case LINE_STAT_HEAD:
6894 case LINE_STAT_NONE:
6895 text = "Nothing to update";
6896 break;
6897
6898 default:
6899 die("line type %d not handled in switch", line->type);
6900 }
6901
6902 if (status && status->status == 'U') {
6903 text = "Press %s to resolve conflict in %s";
6904 key = get_view_key(view, REQ_STATUS_MERGE);
6905
6906 } else {
6907 key = get_view_key(view, REQ_STATUS_UPDATE);
6908 }
6909
6910 string_format(view->ref, text, key, file);
6911 status_stage_info(ref_status, line->type, status);
6912 if (status)
6913 string_copy(opt_file, status->new.name);
6914 }
6915
6916 static bool
6917 status_grep(struct view *view, struct line *line)
6918 {
6919 struct status *status = line->data;
6920
6921 if (status) {
6922 const char buf[2] = { status->status, 0 };
6923 const char *text[] = { status->new.name, buf, NULL };
6924
6925 return grep_text(view, text);
6926 }
6927
6928 return FALSE;
6929 }
6930
6931 static struct view_ops status_ops = {
6932 "file",
6933 { "status" },
6934 VIEW_CUSTOM_STATUS | VIEW_SEND_CHILD_ENTER,
6935 0,
6936 status_open,
6937 NULL,
6938 status_draw,
6939 status_request,
6940 status_grep,
6941 status_select,
6942 };
6943
6944
6945 struct stage_state {
6946 struct diff_state diff;
6947 size_t chunks;
6948 int *chunk;
6949 };
6950
6951 static bool
6952 stage_diff_write(struct io *io, struct line *line, struct line *end)
6953 {
6954 while (line < end) {
6955 if (!io_write(io, line->data, strlen(line->data)) ||
6956 !io_write(io, "\n", 1))
6957 return FALSE;
6958 line++;
6959 if (line->type == LINE_DIFF_CHUNK ||
6960 line->type == LINE_DIFF_HEADER)
6961 break;
6962 }
6963
6964 return TRUE;
6965 }
6966
6967 static bool
6968 stage_apply_chunk(struct view *view, struct line *chunk, struct line *line, bool revert)
6969 {
6970 const char *apply_argv[SIZEOF_ARG] = {
6971 "git", "apply", "--whitespace=nowarn", NULL
6972 };
6973 struct line *diff_hdr;
6974 struct io io;
6975 int argc = 3;
6976
6977 diff_hdr = find_prev_line_by_type(view, chunk, LINE_DIFF_HEADER);
6978 if (!diff_hdr)
6979 return FALSE;
6980
6981 if (!revert)
6982 apply_argv[argc++] = "--cached";
6983 if (line != NULL)
6984 apply_argv[argc++] = "--unidiff-zero";
6985 if (revert || stage_line_type == LINE_STAT_STAGED)
6986 apply_argv[argc++] = "-R";
6987 apply_argv[argc++] = "-";
6988 apply_argv[argc++] = NULL;
6989 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
6990 return FALSE;
6991
6992 if (line != NULL) {
6993 int lineno = 0;
6994 struct line *context = chunk + 1;
6995 const char *markers[] = {
6996 line->type == LINE_DIFF_DEL ? "" : ",0",
6997 line->type == LINE_DIFF_DEL ? ",0" : "",
6998 };
6999
7000 parse_chunk_lineno(&lineno, chunk->data, line->type == LINE_DIFF_DEL ? '+' : '-');
7001
7002 while (context < line) {
7003 if (context->type == LINE_DIFF_CHUNK || context->type == LINE_DIFF_HEADER) {
7004 break;
7005 } else if (context->type != LINE_DIFF_DEL && context->type != LINE_DIFF_ADD) {
7006 lineno++;
7007 }
7008 context++;
7009 }
7010
7011 if (!stage_diff_write(&io, diff_hdr, chunk) ||
7012 !io_printf(&io, "@@ -%d%s +%d%s @@\n",
7013 lineno, markers[0], lineno, markers[1]) ||
7014 !stage_diff_write(&io, line, line + 1)) {
7015 chunk = NULL;
7016 }
7017 } else {
7018 if (!stage_diff_write(&io, diff_hdr, chunk) ||
7019 !stage_diff_write(&io, chunk, view->line + view->lines))
7020 chunk = NULL;
7021 }
7022
7023 io_done(&io);
7024
7025 return chunk ? TRUE : FALSE;
7026 }
7027
7028 static bool
7029 stage_update(struct view *view, struct line *line, bool single)
7030 {
7031 struct line *chunk = NULL;
7032
7033 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
7034 chunk = find_prev_line_by_type(view, line, LINE_DIFF_CHUNK);
7035
7036 if (chunk) {
7037 if (!stage_apply_chunk(view, chunk, single ? line : NULL, FALSE)) {
7038 report("Failed to apply chunk");
7039 return FALSE;
7040 }
7041
7042 } else if (!stage_status.status) {
7043 view = view->parent;
7044
7045 for (line = view->line; view_has_line(view, line); line++)
7046 if (line->type == stage_line_type)
7047 break;
7048
7049 if (!status_update_files(view, line + 1)) {
7050 report("Failed to update files");
7051 return FALSE;
7052 }
7053
7054 } else if (!status_update_file(&stage_status, stage_line_type)) {
7055 report("Failed to update file");
7056 return FALSE;
7057 }
7058
7059 return TRUE;
7060 }
7061
7062 static bool
7063 stage_revert(struct view *view, struct line *line)
7064 {
7065 struct line *chunk = NULL;
7066
7067 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
7068 chunk = find_prev_line_by_type(view, line, LINE_DIFF_CHUNK);
7069
7070 if (chunk) {
7071 if (!prompt_yesno("Are you sure you want to revert changes?"))
7072 return FALSE;
7073
7074 if (!stage_apply_chunk(view, chunk, NULL, TRUE)) {
7075 report("Failed to revert chunk");
7076 return FALSE;
7077 }
7078 return TRUE;
7079
7080 } else {
7081 return status_revert(stage_status.status ? &stage_status : NULL,
7082 stage_line_type, FALSE);
7083 }
7084 }
7085
7086
7087 static void
7088 stage_next(struct view *view, struct line *line)
7089 {
7090 struct stage_state *state = view->private;
7091 int i;
7092
7093 if (!state->chunks) {
7094 for (line = view->line; view_has_line(view, line); line++) {
7095 if (line->type != LINE_DIFF_CHUNK)
7096 continue;
7097
7098 if (!realloc_ints(&state->chunk, state->chunks, 1)) {
7099 report("Allocation failure");
7100 return;
7101 }
7102
7103 state->chunk[state->chunks++] = line - view->line;
7104 }
7105 }
7106
7107 for (i = 0; i < state->chunks; i++) {
7108 if (state->chunk[i] > view->pos.lineno) {
7109 do_scroll_view(view, state->chunk[i] - view->pos.lineno);
7110 report("Chunk %d of %zd", i + 1, state->chunks);
7111 return;
7112 }
7113 }
7114
7115 report("No next chunk found");
7116 }
7117
7118 static enum request
7119 stage_request(struct view *view, enum request request, struct line *line)
7120 {
7121 switch (request) {
7122 case REQ_STATUS_UPDATE:
7123 if (!stage_update(view, line, FALSE))
7124 return REQ_NONE;
7125 break;
7126
7127 case REQ_STATUS_REVERT:
7128 if (!stage_revert(view, line))
7129 return REQ_NONE;
7130 break;
7131
7132 case REQ_STAGE_UPDATE_LINE:
7133 if (stage_line_type == LINE_STAT_UNTRACKED ||
7134 stage_status.status == 'A') {
7135 report("Staging single lines is not supported for new files");
7136 return REQ_NONE;
7137 }
7138 if (line->type != LINE_DIFF_DEL && line->type != LINE_DIFF_ADD) {
7139 report("Please select a change to stage");
7140 return REQ_NONE;
7141 }
7142 if (!stage_update(view, line, TRUE))
7143 return REQ_NONE;
7144 break;
7145
7146 case REQ_STAGE_NEXT:
7147 if (stage_line_type == LINE_STAT_UNTRACKED) {
7148 report("File is untracked; press %s to add",
7149 get_view_key(view, REQ_STATUS_UPDATE));
7150 return REQ_NONE;
7151 }
7152 stage_next(view, line);
7153 return REQ_NONE;
7154
7155 case REQ_EDIT:
7156 if (!stage_status.new.name[0])
7157 return request;
7158 if (stage_status.status == 'D') {
7159 report("File has been deleted.");
7160 return REQ_NONE;
7161 }
7162
7163 if (stage_line_type == LINE_STAT_UNTRACKED) {
7164 open_editor(stage_status.new.name, (line - view->line) + 1);
7165 } else {
7166 open_editor(stage_status.new.name, diff_get_lineno(view, line));
7167 }
7168 break;
7169
7170 case REQ_REFRESH:
7171 /* Reload everything(including current branch information) ... */
7172 load_refs();
7173 break;
7174
7175 case REQ_VIEW_BLAME:
7176 if (stage_status.new.name[0]) {
7177 string_copy(opt_file, stage_status.new.name);
7178 opt_ref[0] = 0;
7179 }
7180 return request;
7181
7182 case REQ_ENTER:
7183 return diff_common_enter(view, request, line);
7184
7185 case REQ_DIFF_CONTEXT_UP:
7186 case REQ_DIFF_CONTEXT_DOWN:
7187 if (!update_diff_context(request))
7188 return REQ_NONE;
7189 break;
7190
7191 default:
7192 return request;
7193 }
7194
7195 refresh_view(view->parent);
7196
7197 /* Check whether the staged entry still exists, and close the
7198 * stage view if it doesn't. */
7199 if (!status_exists(view->parent, &stage_status, stage_line_type)) {
7200 status_restore(view->parent);
7201 return REQ_VIEW_CLOSE;
7202 }
7203
7204 refresh_view(view);
7205
7206 return REQ_NONE;
7207 }
7208
7209 static bool
7210 stage_open(struct view *view, enum open_flags flags)
7211 {
7212 static const char *no_head_diff_argv[] = {
7213 GIT_DIFF_STAGED_INITIAL(opt_encoding_arg, opt_diff_context_arg, opt_ignore_space_arg,
7214 stage_status.new.name)
7215 };
7216 static const char *index_show_argv[] = {
7217 GIT_DIFF_STAGED(opt_encoding_arg, opt_diff_context_arg, opt_ignore_space_arg,
7218 stage_status.old.name, stage_status.new.name)
7219 };
7220 static const char *files_show_argv[] = {
7221 GIT_DIFF_UNSTAGED(opt_encoding_arg, opt_diff_context_arg, opt_ignore_space_arg,
7222 stage_status.old.name, stage_status.new.name)
7223 };
7224 /* Diffs for unmerged entries are empty when passing the new
7225 * path, so leave out the new path. */
7226 static const char *files_unmerged_argv[] = {
7227 "git", "diff-files", opt_encoding_arg, "--root", "--patch-with-stat",
7228 opt_diff_context_arg, opt_ignore_space_arg, "--",
7229 stage_status.old.name, NULL
7230 };
7231 static const char *file_argv[] = { opt_cdup, stage_status.new.name, NULL };
7232 const char **argv = NULL;
7233
7234 if (!stage_line_type) {
7235 report("No stage content, press %s to open the status view and choose file",
7236 get_view_key(view, REQ_VIEW_STATUS));
7237 return FALSE;
7238 }
7239
7240 view->encoding = NULL;
7241
7242 switch (stage_line_type) {
7243 case LINE_STAT_STAGED:
7244 if (is_initial_commit()) {
7245 argv = no_head_diff_argv;
7246 } else {
7247 argv = index_show_argv;
7248 }
7249 break;
7250
7251 case LINE_STAT_UNSTAGED:
7252 if (stage_status.status != 'U')
7253 argv = files_show_argv;
7254 else
7255 argv = files_unmerged_argv;
7256 break;
7257
7258 case LINE_STAT_UNTRACKED:
7259 argv = file_argv;
7260 view->encoding = get_path_encoding(stage_status.old.name, opt_encoding);
7261 break;
7262
7263 case LINE_STAT_HEAD:
7264 default:
7265 die("line type %d not handled in switch", stage_line_type);
7266 }
7267
7268 if (!status_stage_info(view->ref, stage_line_type, &stage_status)
7269 || !argv_copy(&view->argv, argv)) {
7270 report("Failed to open staged view");
7271 return FALSE;
7272 }
7273
7274 view->vid[0] = 0;
7275 view->dir = opt_cdup;
7276 return begin_update(view, NULL, NULL, flags);
7277 }
7278
7279 static bool
7280 stage_read(struct view *view, char *data)
7281 {
7282 struct stage_state *state = view->private;
7283
7284 if (data && diff_common_read(view, data, &state->diff))
7285 return TRUE;
7286
7287 return pager_read(view, data);
7288 }
7289
7290 static struct view_ops stage_ops = {
7291 "line",
7292 { "stage" },
7293 VIEW_DIFF_LIKE,
7294 sizeof(struct stage_state),
7295 stage_open,
7296 stage_read,
7297 diff_common_draw,
7298 stage_request,
7299 pager_grep,
7300 pager_select,
7301 };
7302
7303
7304 /*
7305 * Revision graph
7306 */
7307
7308 static const enum line_type graph_colors[] = {
7309 LINE_PALETTE_0,
7310 LINE_PALETTE_1,
7311 LINE_PALETTE_2,
7312 LINE_PALETTE_3,
7313 LINE_PALETTE_4,
7314 LINE_PALETTE_5,
7315 LINE_PALETTE_6,
7316 };
7317
7318 static enum line_type get_graph_color(struct graph_symbol *symbol)
7319 {
7320 if (symbol->commit)
7321 return LINE_GRAPH_COMMIT;
7322 assert(symbol->color < ARRAY_SIZE(graph_colors));
7323 return graph_colors[symbol->color];
7324 }
7325
7326 static bool
7327 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
7328 {
7329 const char *chars = graph_symbol_to_utf8(symbol);
7330
7331 return draw_text(view, color, chars + !!first);
7332 }
7333
7334 static bool
7335 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
7336 {
7337 const char *chars = graph_symbol_to_ascii(symbol);
7338
7339 return draw_text(view, color, chars + !!first);
7340 }
7341
7342 static bool
7343 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
7344 {
7345 const chtype *chars = graph_symbol_to_chtype(symbol);
7346
7347 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
7348 }
7349
7350 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
7351
7352 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
7353 {
7354 static const draw_graph_fn fns[] = {
7355 draw_graph_ascii,
7356 draw_graph_chtype,
7357 draw_graph_utf8
7358 };
7359 draw_graph_fn fn = fns[opt_line_graphics];
7360 int i;
7361
7362 for (i = 0; i < canvas->size; i++) {
7363 struct graph_symbol *symbol = &canvas->symbols[i];
7364 enum line_type color = get_graph_color(symbol);
7365
7366 if (fn(view, symbol, color, i == 0))
7367 return TRUE;
7368 }
7369
7370 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
7371 }
7372
7373 /*
7374 * Main view backend
7375 */
7376
7377 struct commit {
7378 char id[SIZEOF_REV]; /* SHA1 ID. */
7379 char title[128]; /* First line of the commit message. */
7380 const struct ident *author; /* Author of the commit. */
7381 struct time time; /* Date from the author ident. */
7382 struct ref_list *refs; /* Repository references. */
7383 struct graph_canvas graph; /* Ancestry chain graphics. */
7384 };
7385
7386 struct main_state {
7387 struct graph graph;
7388 struct commit *current;
7389 bool in_header;
7390 bool added_changes_commits;
7391 };
7392
7393 static struct commit *
7394 main_add_commit(struct view *view, enum line_type type, const char *ids,
7395 bool is_boundary, bool custom)
7396 {
7397 struct main_state *state = view->private;
7398 struct commit *commit;
7399
7400 if (!add_line_alloc(view, &commit, type, 0, custom))
7401 return NULL;
7402
7403 string_copy_rev(commit->id, ids);
7404 commit->refs = get_ref_list(commit->id);
7405 graph_add_commit(&state->graph, &commit->graph, commit->id, ids, is_boundary);
7406 return commit;
7407 }
7408
7409 bool
7410 main_has_changes(const char *argv[])
7411 {
7412 struct io io;
7413
7414 if (!io_run(&io, IO_BG, NULL, argv, -1))
7415 return FALSE;
7416 io_done(&io);
7417 return io.status == 1;
7418 }
7419
7420 static void
7421 main_add_changes_commit(struct view *view, enum line_type type, const char *parent, const char *title)
7422 {
7423 char ids[SIZEOF_STR] = NULL_ID " ";
7424 struct main_state *state = view->private;
7425 struct commit *commit;
7426 struct timeval now;
7427 struct timezone tz;
7428
7429 if (!parent)
7430 return;
7431
7432 string_copy_rev(ids + STRING_SIZE(NULL_ID " "), parent);
7433
7434 commit = main_add_commit(view, type, ids, FALSE, TRUE);
7435 if (!commit)
7436 return;
7437
7438 if (!gettimeofday(&now, &tz)) {
7439 commit->time.tz = tz.tz_minuteswest * 60;
7440 commit->time.sec = now.tv_sec - commit->time.tz;
7441 }
7442
7443 commit->author = &unknown_ident;
7444 string_ncopy(commit->title, title, strlen(title));
7445 graph_render_parents(&state->graph);
7446 }
7447
7448 static void
7449 main_add_changes_commits(struct view *view, struct main_state *state, const char *parent)
7450 {
7451 const char *staged_argv[] = { GIT_DIFF_STAGED_FILES("--quiet") };
7452 const char *unstaged_argv[] = { GIT_DIFF_UNSTAGED_FILES("--quiet") };
7453 const char *staged_parent = NULL_ID;
7454 const char *unstaged_parent = parent;
7455
7456 if (!is_head_commit(parent))
7457 return;
7458
7459 state->added_changes_commits = TRUE;
7460
7461 io_run_bg(update_index_argv);
7462
7463 if (!main_has_changes(unstaged_argv)) {
7464 unstaged_parent = NULL;
7465 staged_parent = parent;
7466 }
7467
7468 if (!main_has_changes(staged_argv)) {
7469 staged_parent = NULL;
7470 }
7471
7472 main_add_changes_commit(view, LINE_STAT_STAGED, staged_parent, "Staged changes");
7473 main_add_changes_commit(view, LINE_STAT_UNSTAGED, unstaged_parent, "Unstaged changes");
7474 }
7475
7476 static bool
7477 main_open(struct view *view, enum open_flags flags)
7478 {
7479 static const char *main_argv[] = {
7480 GIT_MAIN_LOG(opt_encoding_arg, "%(diffargs)", "%(revargs)", "%(fileargs)")
7481 };
7482
7483 return begin_update(view, NULL, main_argv, flags);
7484 }
7485
7486 static bool
7487 main_draw(struct view *view, struct line *line, unsigned int lineno)
7488 {
7489 struct commit *commit = line->data;
7490
7491 if (!commit->author)
7492 return FALSE;
7493
7494 if (draw_lineno(view, lineno))
7495 return TRUE;
7496
7497 if (opt_show_id && draw_id(view, LINE_ID, commit->id))
7498 return TRUE;
7499
7500 if (draw_date(view, &commit->time))
7501 return TRUE;
7502
7503 if (draw_author(view, commit->author))
7504 return TRUE;
7505
7506 if (opt_rev_graph && draw_graph(view, &commit->graph))
7507 return TRUE;
7508
7509 if (draw_refs(view, commit->refs))
7510 return TRUE;
7511
7512 draw_commit_title(view, commit->title, 0);
7513 return TRUE;
7514 }
7515
7516 /* Reads git log --pretty=raw output and parses it into the commit struct. */
7517 static bool
7518 main_read(struct view *view, char *line)
7519 {
7520 struct main_state *state = view->private;
7521 struct graph *graph = &state->graph;
7522 enum line_type type;
7523 struct commit *commit = state->current;
7524
7525 if (!line) {
7526 if (!view->lines && !view->prev)
7527 die("No revisions match the given arguments.");
7528 if (view->lines > 0) {
7529 commit = view->line[view->lines - 1].data;
7530 view->line[view->lines - 1].dirty = 1;
7531 if (!commit->author) {
7532 view->lines--;
7533 free(commit);
7534 }
7535 }
7536
7537 done_graph(graph);
7538 return TRUE;
7539 }
7540
7541 type = get_line_type(line);
7542 if (type == LINE_COMMIT) {
7543 bool is_boundary;
7544
7545 state->in_header = TRUE;
7546 line += STRING_SIZE("commit ");
7547 is_boundary = *line == '-';
7548 if (is_boundary || !isalnum(*line))
7549 line++;
7550
7551 if (!state->added_changes_commits && opt_show_changes && opt_is_inside_work_tree)
7552 main_add_changes_commits(view, state, line);
7553
7554 state->current = main_add_commit(view, LINE_MAIN_COMMIT, line, is_boundary, FALSE);
7555 return state->current != NULL;
7556 }
7557
7558 if (!view->lines || !commit)
7559 return TRUE;
7560
7561 /* Empty line separates the commit header from the log itself. */
7562 if (*line == '\0')
7563 state->in_header = FALSE;
7564
7565 switch (type) {
7566 case LINE_PARENT:
7567 if (!graph->has_parents)
7568 graph_add_parent(graph, line + STRING_SIZE("parent "));
7569 break;
7570
7571 case LINE_AUTHOR:
7572 parse_author_line(line + STRING_SIZE("author "),
7573 &commit->author, &commit->time);
7574 graph_render_parents(graph);
7575 break;
7576
7577 default:
7578 /* Fill in the commit title if it has not already been set. */
7579 if (commit->title[0])
7580 break;
7581
7582 /* Skip lines in the commit header. */
7583 if (state->in_header)
7584 break;
7585
7586 /* Require titles to start with a non-space character at the
7587 * offset used by git log. */
7588 if (strncmp(line, " ", 4))
7589 break;
7590 line += 4;
7591 /* Well, if the title starts with a whitespace character,
7592 * try to be forgiving. Otherwise we end up with no title. */
7593 while (isspace(*line))
7594 line++;
7595 if (*line == '\0')
7596 break;
7597 /* FIXME: More graceful handling of titles; append "..." to
7598 * shortened titles, etc. */
7599
7600 string_expand(commit->title, sizeof(commit->title), line, 1);
7601 view->line[view->lines - 1].dirty = 1;
7602 }
7603
7604 return TRUE;
7605 }
7606
7607 static enum request
7608 main_request(struct view *view, enum request request, struct line *line)
7609 {
7610 enum open_flags flags = (view_is_displayed(view) && request != REQ_VIEW_DIFF)
7611 ? OPEN_SPLIT : OPEN_DEFAULT;
7612
7613 switch (request) {
7614 case REQ_NEXT:
7615 case REQ_PREVIOUS:
7616 if (view_is_displayed(view) && display[0] != view)
7617 return request;
7618 /* Do not pass navigation requests to the branch view
7619 * when the main view is maximized. (GH #38) */
7620 move_view(view, request);
7621 break;
7622
7623 case REQ_VIEW_DIFF:
7624 case REQ_ENTER:
7625 if (view_is_displayed(view) && display[0] != view)
7626 maximize_view(view, TRUE);
7627
7628 if (line->type == LINE_STAT_UNSTAGED
7629 || line->type == LINE_STAT_STAGED) {
7630 struct view *diff = VIEW(REQ_VIEW_DIFF);
7631 const char *diff_staged_argv[] = {
7632 GIT_DIFF_STAGED(opt_encoding_arg,
7633 opt_diff_context_arg,
7634 opt_ignore_space_arg, NULL, NULL)
7635 };
7636 const char *diff_unstaged_argv[] = {
7637 GIT_DIFF_UNSTAGED(opt_encoding_arg,
7638 opt_diff_context_arg,
7639 opt_ignore_space_arg, NULL, NULL)
7640 };
7641 const char **diff_argv = line->type == LINE_STAT_STAGED
7642 ? diff_staged_argv : diff_unstaged_argv;
7643
7644 open_argv(view, diff, diff_argv, NULL, flags);
7645 break;
7646 }
7647
7648 open_view(view, REQ_VIEW_DIFF, flags);
7649 break;
7650
7651 case REQ_REFRESH:
7652 load_refs();
7653 refresh_view(view);
7654 break;
7655
7656 case REQ_JUMP_COMMIT:
7657 {
7658 int lineno;
7659
7660 for (lineno = 0; lineno < view->lines; lineno++) {
7661 struct commit *commit = view->line[lineno].data;
7662
7663 if (!strncasecmp(commit->id, opt_search, strlen(opt_search))) {
7664 select_view_line(view, lineno);
7665 report_clear();
7666 return REQ_NONE;
7667 }
7668 }
7669
7670 report("Unable to find commit '%s'", opt_search);
7671 break;
7672 }
7673 default:
7674 return request;
7675 }
7676
7677 return REQ_NONE;
7678 }
7679
7680 static bool
7681 grep_refs(struct ref_list *list, regex_t *regex)
7682 {
7683 regmatch_t pmatch;
7684 size_t i;
7685
7686 if (!opt_show_refs || !list)
7687 return FALSE;
7688
7689 for (i = 0; i < list->size; i++) {
7690 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
7691 return TRUE;
7692 }
7693
7694 return FALSE;
7695 }
7696
7697 static bool
7698 main_grep(struct view *view, struct line *line)
7699 {
7700 struct commit *commit = line->data;
7701 const char *text[] = {
7702 commit->id,
7703 commit->title,
7704 mkauthor(commit->author, opt_author_width, opt_author),
7705 mkdate(&commit->time, opt_date),
7706 NULL
7707 };
7708
7709 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
7710 }
7711
7712 static void
7713 main_select(struct view *view, struct line *line)
7714 {
7715 struct commit *commit = line->data;
7716
7717 if (line->type == LINE_STAT_STAGED || line->type == LINE_STAT_UNSTAGED)
7718 string_copy(view->ref, commit->title);
7719 else
7720 string_copy_rev(view->ref, commit->id);
7721 string_copy_rev(ref_commit, commit->id);
7722 }
7723
7724 static struct view_ops main_ops = {
7725 "commit",
7726 { "main" },
7727 VIEW_STDIN | VIEW_SEND_CHILD_ENTER | VIEW_FILE_FILTER,
7728 sizeof(struct main_state),
7729 main_open,
7730 main_read,
7731 main_draw,
7732 main_request,
7733 main_grep,
7734 main_select,
7735 };
7736
7737
7738 /*
7739 * Status management
7740 */
7741
7742 /* Whether or not the curses interface has been initialized. */
7743 static bool cursed = FALSE;
7744
7745 /* Terminal hacks and workarounds. */
7746 static bool use_scroll_redrawwin;
7747 static bool use_scroll_status_wclear;
7748
7749 /* The status window is used for polling keystrokes. */
7750 static WINDOW *status_win;
7751
7752 /* Reading from the prompt? */
7753 static bool input_mode = FALSE;
7754
7755 static bool status_empty = FALSE;
7756
7757 /* Update status and title window. */
7758 static void
7759 report(const char *msg, ...)
7760 {
7761 struct view *view = display[current_view];
7762
7763 if (input_mode)
7764 return;
7765
7766 if (!view) {
7767 char buf[SIZEOF_STR];
7768 int retval;
7769
7770 FORMAT_BUFFER(buf, sizeof(buf), msg, retval, TRUE);
7771 die("%s", buf);
7772 }
7773
7774 if (!status_empty || *msg) {
7775 va_list args;
7776
7777 va_start(args, msg);
7778
7779 wmove(status_win, 0, 0);
7780 if (view->has_scrolled && use_scroll_status_wclear)
7781 wclear(status_win);
7782 if (*msg) {
7783 vwprintw(status_win, msg, args);
7784 status_empty = FALSE;
7785 } else {
7786 status_empty = TRUE;
7787 }
7788 wclrtoeol(status_win);
7789 wnoutrefresh(status_win);
7790
7791 va_end(args);
7792 }
7793
7794 update_view_title(view);
7795 }
7796
7797 static void
7798 init_display(void)
7799 {
7800 const char *term;
7801 int x, y;
7802
7803 /* Initialize the curses library */
7804 if (isatty(STDIN_FILENO)) {
7805 cursed = !!initscr();
7806 opt_tty = stdin;
7807 } else {
7808 /* Leave stdin and stdout alone when acting as a pager. */
7809 opt_tty = fopen("/dev/tty", "r+");
7810 if (!opt_tty)
7811 die("Failed to open /dev/tty");
7812 cursed = !!newterm(NULL, opt_tty, opt_tty);
7813 }
7814
7815 if (!cursed)
7816 die("Failed to initialize curses");
7817
7818 nonl(); /* Disable conversion and detect newlines from input. */
7819 cbreak(); /* Take input chars one at a time, no wait for \n */
7820 noecho(); /* Don't echo input */
7821 leaveok(stdscr, FALSE);
7822
7823 if (has_colors())
7824 init_colors();
7825
7826 getmaxyx(stdscr, y, x);
7827 status_win = newwin(1, x, y - 1, 0);
7828 if (!status_win)
7829 die("Failed to create status window");
7830
7831 /* Enable keyboard mapping */
7832 keypad(status_win, TRUE);
7833 wbkgdset(status_win, get_line_attr(LINE_STATUS));
7834
7835 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
7836 set_tabsize(opt_tab_size);
7837 #else
7838 TABSIZE = opt_tab_size;
7839 #endif
7840
7841 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
7842 if (term && !strcmp(term, "gnome-terminal")) {
7843 /* In the gnome-terminal-emulator, the message from
7844 * scrolling up one line when impossible followed by
7845 * scrolling down one line causes corruption of the
7846 * status line. This is fixed by calling wclear. */
7847 use_scroll_status_wclear = TRUE;
7848 use_scroll_redrawwin = FALSE;
7849
7850 } else if (term && !strcmp(term, "xrvt-xpm")) {
7851 /* No problems with full optimizations in xrvt-(unicode)
7852 * and aterm. */
7853 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
7854
7855 } else {
7856 /* When scrolling in (u)xterm the last line in the
7857 * scrolling direction will update slowly. */
7858 use_scroll_redrawwin = TRUE;
7859 use_scroll_status_wclear = FALSE;
7860 }
7861 }
7862
7863 static int
7864 get_input(int prompt_position)
7865 {
7866 struct view *view;
7867 int i, key, cursor_y, cursor_x;
7868
7869 if (prompt_position)
7870 input_mode = TRUE;
7871
7872 while (TRUE) {
7873 bool loading = FALSE;
7874
7875 foreach_view (view, i) {
7876 update_view(view);
7877 if (view_is_displayed(view) && view->has_scrolled &&
7878 use_scroll_redrawwin)
7879 redrawwin(view->win);
7880 view->has_scrolled = FALSE;
7881 if (view->pipe)
7882 loading = TRUE;
7883 }
7884
7885 /* Update the cursor position. */
7886 if (prompt_position) {
7887 getbegyx(status_win, cursor_y, cursor_x);
7888 cursor_x = prompt_position;
7889 } else {
7890 view = display[current_view];
7891 getbegyx(view->win, cursor_y, cursor_x);
7892 cursor_x = view->width - 1;
7893 cursor_y += view->pos.lineno - view->pos.offset;
7894 }
7895 setsyx(cursor_y, cursor_x);
7896
7897 /* Refresh, accept single keystroke of input */
7898 doupdate();
7899 nodelay(status_win, loading);
7900 key = wgetch(status_win);
7901
7902 /* wgetch() with nodelay() enabled returns ERR when
7903 * there's no input. */
7904 if (key == ERR) {
7905
7906 } else if (key == KEY_RESIZE) {
7907 int height, width;
7908
7909 getmaxyx(stdscr, height, width);
7910
7911 wresize(status_win, 1, width);
7912 mvwin(status_win, height - 1, 0);
7913 wnoutrefresh(status_win);
7914 resize_display();
7915 redraw_display(TRUE);
7916
7917 } else {
7918 input_mode = FALSE;
7919 if (key == erasechar())
7920 key = KEY_BACKSPACE;
7921 return key;
7922 }
7923 }
7924 }
7925
7926 static char *
7927 prompt_input(const char *prompt, input_handler handler, void *data)
7928 {
7929 enum input_status status = INPUT_OK;
7930 static char buf[SIZEOF_STR];
7931 size_t pos = 0;
7932
7933 buf[pos] = 0;
7934
7935 while (status == INPUT_OK || status == INPUT_SKIP) {
7936 int key;
7937
7938 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
7939 wclrtoeol(status_win);
7940
7941 key = get_input(pos + 1);
7942 switch (key) {
7943 case KEY_RETURN:
7944 case KEY_ENTER:
7945 case '\n':
7946 status = pos ? INPUT_STOP : INPUT_CANCEL;
7947 break;
7948
7949 case KEY_BACKSPACE:
7950 if (pos > 0)
7951 buf[--pos] = 0;
7952 else
7953 status = INPUT_CANCEL;
7954 break;
7955
7956 case KEY_ESC:
7957 status = INPUT_CANCEL;
7958 break;
7959
7960 default:
7961 if (pos >= sizeof(buf)) {
7962 report("Input string too long");
7963 return NULL;
7964 }
7965
7966 status = handler(data, buf, key);
7967 if (status == INPUT_OK)
7968 buf[pos++] = (char) key;
7969 }
7970 }
7971
7972 /* Clear the status window */
7973 status_empty = FALSE;
7974 report_clear();
7975
7976 if (status == INPUT_CANCEL)
7977 return NULL;
7978
7979 buf[pos++] = 0;
7980
7981 return buf;
7982 }
7983
7984 static enum input_status
7985 prompt_yesno_handler(void *data, char *buf, int c)
7986 {
7987 if (c == 'y' || c == 'Y')
7988 return INPUT_STOP;
7989 if (c == 'n' || c == 'N')
7990 return INPUT_CANCEL;
7991 return INPUT_SKIP;
7992 }
7993
7994 static bool
7995 prompt_yesno(const char *prompt)
7996 {
7997 char prompt2[SIZEOF_STR];
7998
7999 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
8000 return FALSE;
8001
8002 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
8003 }
8004
8005 static enum input_status
8006 read_prompt_handler(void *data, char *buf, int c)
8007 {
8008 return isprint(c) ? INPUT_OK : INPUT_SKIP;
8009 }
8010
8011 static char *
8012 read_prompt(const char *prompt)
8013 {
8014 return prompt_input(prompt, read_prompt_handler, NULL);
8015 }
8016
8017 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
8018 {
8019 enum input_status status = INPUT_OK;
8020 int size = 0;
8021
8022 while (items[size].text)
8023 size++;
8024
8025 assert(size > 0);
8026
8027 while (status == INPUT_OK) {
8028 const struct menu_item *item = &items[*selected];
8029 int key;
8030 int i;
8031
8032 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
8033 prompt, *selected + 1, size);
8034 if (item->hotkey)
8035 wprintw(status_win, "[%c] ", (char) item->hotkey);
8036 wprintw(status_win, "%s", item->text);
8037 wclrtoeol(status_win);
8038
8039 key = get_input(COLS - 1);
8040 switch (key) {
8041 case KEY_RETURN:
8042 case KEY_ENTER:
8043 case '\n':
8044 status = INPUT_STOP;
8045 break;
8046
8047 case KEY_LEFT:
8048 case KEY_UP:
8049 *selected = *selected - 1;
8050 if (*selected < 0)
8051 *selected = size - 1;
8052 break;
8053
8054 case KEY_RIGHT:
8055 case KEY_DOWN:
8056 *selected = (*selected + 1) % size;
8057 break;
8058
8059 case KEY_ESC:
8060 status = INPUT_CANCEL;
8061 break;
8062
8063 default:
8064 for (i = 0; items[i].text; i++)
8065 if (items[i].hotkey == key) {
8066 *selected = i;
8067 status = INPUT_STOP;
8068 break;
8069 }
8070 }
8071 }
8072
8073 /* Clear the status window */
8074 status_empty = FALSE;
8075 report_clear();
8076
8077 return status != INPUT_CANCEL;
8078 }
8079
8080 /*
8081 * Repository properties
8082 */
8083
8084
8085 static void
8086 set_remote_branch(const char *name, const char *value, size_t valuelen)
8087 {
8088 if (!strcmp(name, ".remote")) {
8089 string_ncopy(opt_remote, value, valuelen);
8090
8091 } else if (*opt_remote && !strcmp(name, ".merge")) {
8092 size_t from = strlen(opt_remote);
8093
8094 if (!prefixcmp(value, "refs/heads/"))
8095 value += STRING_SIZE("refs/heads/");
8096
8097 if (!string_format_from(opt_remote, &from, "/%s", value))
8098 opt_remote[0] = 0;
8099 }
8100 }
8101
8102 static void
8103 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
8104 {
8105 const char *argv[SIZEOF_ARG] = { name, "=" };
8106 int argc = 1 + (cmd == option_set_command);
8107 enum option_code error;
8108
8109 if (!argv_from_string(argv, &argc, value))
8110 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
8111 else
8112 error = cmd(argc, argv);
8113
8114 if (error != OPT_OK)
8115 warn("Option 'tig.%s': %s", name, option_errors[error]);
8116 }
8117
8118 static bool
8119 set_environment_variable(const char *name, const char *value)
8120 {
8121 size_t len = strlen(name) + 1 + strlen(value) + 1;
8122 char *env = malloc(len);
8123
8124 if (env &&
8125 string_nformat(env, len, NULL, "%s=%s", name, value) &&
8126 putenv(env) == 0)
8127 return TRUE;
8128 free(env);
8129 return FALSE;
8130 }
8131
8132 static void
8133 set_work_tree(const char *value)
8134 {
8135 char cwd[SIZEOF_STR];
8136
8137 if (!getcwd(cwd, sizeof(cwd)))
8138 die("Failed to get cwd path: %s", strerror(errno));
8139 if (chdir(cwd) < 0)
8140 die("Failed to chdir(%s): %s", cwd, strerror(errno));
8141 if (chdir(opt_git_dir) < 0)
8142 die("Failed to chdir(%s): %s", opt_git_dir, strerror(errno));
8143 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
8144 die("Failed to get git path: %s", strerror(errno));
8145 if (chdir(value) < 0)
8146 die("Failed to chdir(%s): %s", value, strerror(errno));
8147 if (!getcwd(cwd, sizeof(cwd)))
8148 die("Failed to get cwd path: %s", strerror(errno));
8149 if (!set_environment_variable("GIT_WORK_TREE", cwd))
8150 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
8151 if (!set_environment_variable("GIT_DIR", opt_git_dir))
8152 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
8153 opt_is_inside_work_tree = TRUE;
8154 }
8155
8156 static void
8157 parse_git_color_option(enum line_type type, char *value)
8158 {
8159 struct line_info *info = &line_info[type];
8160 const char *argv[SIZEOF_ARG];
8161 int argc = 0;
8162 bool first_color = TRUE;
8163 int i;
8164
8165 if (!argv_from_string(argv, &argc, value))
8166 return;
8167
8168 info->fg = COLOR_DEFAULT;
8169 info->bg = COLOR_DEFAULT;
8170 info->attr = 0;
8171
8172 for (i = 0; i < argc; i++) {
8173 int attr = 0;
8174
8175 if (set_attribute(&attr, argv[i])) {
8176 info->attr |= attr;
8177
8178 } else if (set_color(&attr, argv[i])) {
8179 if (first_color)
8180 info->fg = attr;
8181 else
8182 info->bg = attr;
8183 first_color = FALSE;
8184 }
8185 }
8186 }
8187
8188 static void
8189 set_git_color_option(const char *name, char *value)
8190 {
8191 static const struct enum_map color_option_map[] = {
8192 ENUM_MAP("branch.current", LINE_MAIN_HEAD),
8193 ENUM_MAP("branch.local", LINE_MAIN_REF),
8194 ENUM_MAP("branch.plain", LINE_MAIN_REF),
8195 ENUM_MAP("branch.remote", LINE_MAIN_REMOTE),
8196
8197 ENUM_MAP("diff.meta", LINE_DIFF_HEADER),
8198 ENUM_MAP("diff.meta", LINE_DIFF_INDEX),
8199 ENUM_MAP("diff.meta", LINE_DIFF_OLDMODE),
8200 ENUM_MAP("diff.meta", LINE_DIFF_NEWMODE),
8201 ENUM_MAP("diff.frag", LINE_DIFF_CHUNK),
8202 ENUM_MAP("diff.old", LINE_DIFF_DEL),
8203 ENUM_MAP("diff.new", LINE_DIFF_ADD),
8204
8205 //ENUM_MAP("diff.commit", LINE_DIFF_ADD),
8206
8207 ENUM_MAP("status.branch", LINE_STAT_HEAD),
8208 //ENUM_MAP("status.nobranch", LINE_STAT_HEAD),
8209 ENUM_MAP("status.added", LINE_STAT_STAGED),
8210 ENUM_MAP("status.updated", LINE_STAT_STAGED),
8211 ENUM_MAP("status.changed", LINE_STAT_UNSTAGED),
8212 ENUM_MAP("status.untracked", LINE_STAT_UNTRACKED),
8213
8214 };
8215 int type = LINE_NONE;
8216
8217 if (opt_read_git_colors && map_enum(&type, color_option_map, name)) {
8218 parse_git_color_option(type, value);
8219 }
8220 }
8221
8222 static void
8223 set_encoding(struct encoding **encoding_ref, const char *arg, bool priority)
8224 {
8225 if (parse_encoding(encoding_ref, arg, priority) == OPT_OK)
8226 opt_encoding_arg[0] = 0;
8227 }
8228
8229 static int
8230 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
8231 {
8232 if (!strcmp(name, "i18n.commitencoding"))
8233 set_encoding(&opt_encoding, value, FALSE);
8234
8235 else if (!strcmp(name, "gui.encoding"))
8236 set_encoding(&opt_encoding, value, TRUE);
8237
8238 else if (!strcmp(name, "core.editor"))
8239 string_ncopy(opt_editor, value, valuelen);
8240
8241 else if (!strcmp(name, "core.worktree"))
8242 set_work_tree(value);
8243
8244 else if (!strcmp(name, "core.abbrev"))
8245 parse_id(&opt_id_cols, value);
8246
8247 else if (!prefixcmp(name, "tig.color."))
8248 set_repo_config_option(name + 10, value, option_color_command);
8249
8250 else if (!prefixcmp(name, "tig.bind."))
8251 set_repo_config_option(name + 9, value, option_bind_command);
8252
8253 else if (!prefixcmp(name, "tig."))
8254 set_repo_config_option(name + 4, value, option_set_command);
8255
8256 else if (!prefixcmp(name, "color."))
8257 set_git_color_option(name + STRING_SIZE("color."), value);
8258
8259 else if (*opt_head && !prefixcmp(name, "branch.") &&
8260 !strncmp(name + 7, opt_head, strlen(opt_head)))
8261 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
8262
8263 return OK;
8264 }
8265
8266 static int
8267 load_git_config(void)
8268 {
8269 const char *config_list_argv[] = { "git", "config", "--list", NULL };
8270
8271 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
8272 }
8273
8274 static int
8275 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
8276 {
8277 if (!opt_git_dir[0]) {
8278 string_ncopy(opt_git_dir, name, namelen);
8279
8280 } else if (opt_is_inside_work_tree == -1) {
8281 /* This can be 3 different values depending on the
8282 * version of git being used. If git-rev-parse does not
8283 * understand --is-inside-work-tree it will simply echo
8284 * the option else either "true" or "false" is printed.
8285 * Default to true for the unknown case. */
8286 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
8287
8288 } else if (*name == '.') {
8289 string_ncopy(opt_cdup, name, namelen);
8290
8291 } else {
8292 string_ncopy(opt_prefix, name, namelen);
8293 }
8294
8295 return OK;
8296 }
8297
8298 static int
8299 load_repo_info(void)
8300 {
8301 const char *rev_parse_argv[] = {
8302 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
8303 "--show-cdup", "--show-prefix", NULL
8304 };
8305
8306 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
8307 }
8308
8309
8310 /*
8311 * Main
8312 */
8313
8314 static const char usage[] =
8315 "tig " TIG_VERSION " (" __DATE__ ")\n"
8316 "\n"
8317 "Usage: tig [options] [revs] [--] [paths]\n"
8318 " or: tig show [options] [revs] [--] [paths]\n"
8319 " or: tig blame [options] [rev] [--] path\n"
8320 " or: tig status\n"
8321 " or: tig < [git command output]\n"
8322 "\n"
8323 "Options:\n"
8324 " +<number> Select line <number> in the first view\n"
8325 " -v, --version Show version and exit\n"
8326 " -h, --help Show help message and exit";
8327
8328 static void TIG_NORETURN
8329 quit(int sig)
8330 {
8331 if (sig)
8332 signal(sig, SIG_DFL);
8333
8334 /* XXX: Restore tty modes and let the OS cleanup the rest! */
8335 if (cursed)
8336 endwin();
8337 exit(0);
8338 }
8339
8340 static void TIG_NORETURN
8341 die(const char *err, ...)
8342 {
8343 va_list args;
8344
8345 endwin();
8346
8347 va_start(args, err);
8348 fputs("tig: ", stderr);
8349 vfprintf(stderr, err, args);
8350 fputs("\n", stderr);
8351 va_end(args);
8352
8353 exit(1);
8354 }
8355
8356 static void
8357 warn(const char *msg, ...)
8358 {
8359 va_list args;
8360
8361 va_start(args, msg);
8362 fputs("tig warning: ", stderr);
8363 vfprintf(stderr, msg, args);
8364 fputs("\n", stderr);
8365 va_end(args);
8366 }
8367
8368 static int
8369 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
8370 {
8371 const char ***filter_args = data;
8372
8373 return argv_append(filter_args, name) ? OK : ERR;
8374 }
8375
8376 static void
8377 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
8378 {
8379 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
8380 const char **all_argv = NULL;
8381
8382 if (!argv_append_array(&all_argv, rev_parse_argv) ||
8383 !argv_append_array(&all_argv, argv) ||
8384 io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
8385 die("Failed to split arguments");
8386 argv_free(all_argv);
8387 free(all_argv);
8388 }
8389
8390 static bool
8391 is_rev_flag(const char *flag)
8392 {
8393 static const char *rev_flags[] = { GIT_REV_FLAGS };
8394 int i;
8395
8396 for (i = 0; i < ARRAY_SIZE(rev_flags); i++)
8397 if (!strcmp(flag, rev_flags[i]))
8398 return TRUE;
8399
8400 return FALSE;
8401 }
8402
8403 static void
8404 filter_options(const char *argv[], bool blame)
8405 {
8406 const char **flags = NULL;
8407
8408 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
8409 filter_rev_parse(&flags, "--flags", "--no-revs", argv);
8410
8411 if (flags) {
8412 int next, flags_pos;
8413
8414 for (next = flags_pos = 0; flags && flags[next]; next++) {
8415 const char *flag = flags[next];
8416
8417 if (is_rev_flag(flag))
8418 argv_append(&opt_rev_argv, flag);
8419 else
8420 flags[flags_pos++] = flag;
8421 }
8422
8423 flags[flags_pos] = NULL;
8424
8425 if (blame)
8426 opt_blame_argv = flags;
8427 else
8428 opt_diff_argv = flags;
8429 }
8430
8431 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
8432 }
8433
8434 static enum request
8435 parse_options(int argc, const char *argv[])
8436 {
8437 enum request request;
8438 const char *subcommand;
8439 bool seen_dashdash = FALSE;
8440 const char **filter_argv = NULL;
8441 int i;
8442
8443 opt_stdin = !isatty(STDIN_FILENO);
8444 request = opt_stdin ? REQ_VIEW_PAGER : REQ_VIEW_MAIN;
8445
8446 if (argc <= 1)
8447 return request;
8448
8449 subcommand = argv[1];
8450 if (!strcmp(subcommand, "status")) {
8451 request = REQ_VIEW_STATUS;
8452
8453 } else if (!strcmp(subcommand, "blame")) {
8454 request = REQ_VIEW_BLAME;
8455
8456 } else if (!strcmp(subcommand, "show")) {
8457 request = REQ_VIEW_DIFF;
8458
8459 } else {
8460 subcommand = NULL;
8461 }
8462
8463 for (i = 1 + !!subcommand; i < argc; i++) {
8464 const char *opt = argv[i];
8465
8466 // stop parsing our options after -- and let rev-parse handle the rest
8467 if (!seen_dashdash) {
8468 if (!strcmp(opt, "--")) {
8469 seen_dashdash = TRUE;
8470 continue;
8471
8472 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
8473 printf("tig version %s\n", TIG_VERSION);
8474 quit(0);
8475
8476 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
8477 printf("%s\n", usage);
8478 quit(0);
8479
8480 } else if (strlen(opt) >= 2 && *opt == '+' && string_isnumber(opt + 1)) {
8481 opt_lineno = atoi(opt + 1);
8482 continue;
8483
8484 }
8485 }
8486
8487 if (!argv_append(&filter_argv, opt))
8488 die("command too long");
8489 }
8490
8491 if (filter_argv)
8492 filter_options(filter_argv, request == REQ_VIEW_BLAME);
8493
8494 /* Finish validating and setting up blame options */
8495 if (request == REQ_VIEW_BLAME) {
8496 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
8497 die("invalid number of options to blame\n\n%s", usage);
8498
8499 if (opt_rev_argv) {
8500 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
8501 }
8502
8503 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
8504
8505 } else if (request == REQ_VIEW_PAGER) {
8506 for (i = 0; opt_rev_argv && opt_rev_argv[i]; i++) {
8507 if (!strcmp("--stdin", opt_rev_argv[i])) {
8508 request = REQ_VIEW_MAIN;
8509 break;
8510 }
8511 }
8512 }
8513
8514 return request;
8515 }
8516
8517 static enum request
8518 run_prompt_command(struct view *view, char *cmd) {
8519 enum request request;
8520
8521 if (cmd && string_isnumber(cmd)) {
8522 int lineno = view->pos.lineno + 1;
8523
8524 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OPT_OK) {
8525 select_view_line(view, lineno - 1);
8526 report_clear();
8527 } else {
8528 report("Unable to parse '%s' as a line number", cmd);
8529 }
8530 } else if (cmd && iscommit(cmd)) {
8531 string_ncopy(opt_search, cmd, strlen(cmd));
8532
8533 request = view_request(view, REQ_JUMP_COMMIT);
8534 if (request == REQ_JUMP_COMMIT) {
8535 report("Jumping to commits is not supported by the '%s' view", view->name);
8536 }
8537
8538 } else if (cmd && strlen(cmd) == 1) {
8539 request = get_keybinding(&view->ops->keymap, cmd[0]);
8540 return request;
8541
8542 } else if (cmd && cmd[0] == '!') {
8543 struct view *next = VIEW(REQ_VIEW_PAGER);
8544 const char *argv[SIZEOF_ARG];
8545 int argc = 0;
8546
8547 cmd++;
8548 /* When running random commands, initially show the
8549 * command in the title. However, it maybe later be
8550 * overwritten if a commit line is selected. */
8551 string_ncopy(next->ref, cmd, strlen(cmd));
8552
8553 if (!argv_from_string(argv, &argc, cmd)) {
8554 report("Too many arguments");
8555 } else if (!format_argv(&next->argv, argv, FALSE, TRUE)) {
8556 report("Argument formatting failed");
8557 } else {
8558 next->dir = NULL;
8559 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
8560 }
8561
8562 } else if (cmd) {
8563 request = get_request(cmd);
8564 if (request != REQ_UNKNOWN)
8565 return request;
8566
8567 char *args = strchr(cmd, ' ');
8568 if (args) {
8569 *args++ = 0;
8570 if (set_option(cmd, args) == OPT_OK) {
8571 request = !view->unrefreshable ? REQ_REFRESH : REQ_SCREEN_REDRAW;
8572 if (!strcmp(cmd, "color"))
8573 init_colors();
8574 }
8575 }
8576 return request;
8577 }
8578 return REQ_NONE;
8579 }
8580
8581 int
8582 main(int argc, const char *argv[])
8583 {
8584 const char *codeset = ENCODING_UTF8;
8585 enum request request = parse_options(argc, argv);
8586 struct view *view;
8587 int i;
8588
8589 signal(SIGINT, quit);
8590 signal(SIGQUIT, quit);
8591 signal(SIGPIPE, SIG_IGN);
8592
8593 if (setlocale(LC_ALL, "")) {
8594 codeset = nl_langinfo(CODESET);
8595 }
8596
8597 foreach_view(view, i) {
8598 add_keymap(&view->ops->keymap);
8599 }
8600
8601 if (load_repo_info() == ERR)
8602 die("Failed to load repo info.");
8603
8604 if (load_options() == ERR)
8605 die("Failed to load user config.");
8606
8607 if (load_git_config() == ERR)
8608 die("Failed to load repo config.");
8609
8610 /* Require a git repository unless when running in pager mode. */
8611 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
8612 die("Not a git repository");
8613
8614 if (codeset && strcmp(codeset, ENCODING_UTF8)) {
8615 char translit[SIZEOF_STR];
8616
8617 if (string_format(translit, "%s%s", codeset, ICONV_TRANSLIT))
8618 opt_iconv_out = iconv_open(translit, ENCODING_UTF8);
8619 else
8620 opt_iconv_out = iconv_open(codeset, ENCODING_UTF8);
8621 if (opt_iconv_out == ICONV_NONE)
8622 die("Failed to initialize character set conversion");
8623 }
8624
8625 if (load_refs() == ERR)
8626 die("Failed to load refs.");
8627
8628 init_display();
8629
8630 while (view_driver(display[current_view], request)) {
8631 int key = get_input(0);
8632
8633 if (key == KEY_ESC)
8634 key = get_input(0) + 0x80;
8635
8636 view = display[current_view];
8637 request = get_keybinding(&view->ops->keymap, key);
8638
8639 /* Some low-level request handling. This keeps access to
8640 * status_win restricted. */
8641 switch (request) {
8642 case REQ_NONE:
8643 report("Unknown key, press %s for help",
8644 get_view_key(view, REQ_VIEW_HELP));
8645 break;
8646 case REQ_PROMPT:
8647 {
8648 char *cmd = read_prompt(":");
8649 request = run_prompt_command(view, cmd);
8650 break;
8651 }
8652 case REQ_SEARCH:
8653 case REQ_SEARCH_BACK:
8654 {
8655 const char *prompt = request == REQ_SEARCH ? "/" : "?";
8656 char *search = read_prompt(prompt);
8657
8658 if (search)
8659 string_ncopy(opt_search, search, strlen(search));
8660 else if (*opt_search)
8661 request = request == REQ_SEARCH ?
8662 REQ_FIND_NEXT :
8663 REQ_FIND_PREV;
8664 else
8665 request = REQ_NONE;
8666 break;
8667 }
8668 default:
8669 break;
8670 }
8671 }
8672
8673 quit(0);
8674
8675 return 0;
8676 }
8677
8678 /* vim: set ts=8 sw=8 noexpandtab: */
Text-mode interface for git