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Rework the help view to not use line->other
[tig.git] / tig.c
blob1582cbb7025a87653dec4091cee8a3db5e8be3c2
1 /* Copyright (c) 2006-2012 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 "graph.h"
17 #include "git.h"
18
19 static void __NORETURN die(const char *err, ...);
20 static void warn(const char *msg, ...);
21 static void report(const char *msg, ...);
22
23
24 struct ref {
25 char id[SIZEOF_REV]; /* Commit SHA1 ID */
26 unsigned int head:1; /* Is it the current HEAD? */
27 unsigned int tag:1; /* Is it a tag? */
28 unsigned int ltag:1; /* If so, is the tag local? */
29 unsigned int remote:1; /* Is it a remote ref? */
30 unsigned int replace:1; /* Is it a replace ref? */
31 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
32 char name[1]; /* Ref name; tag or head names are shortened. */
33 };
34
35 struct ref_list {
36 char id[SIZEOF_REV]; /* Commit SHA1 ID */
37 size_t size; /* Number of refs. */
38 struct ref **refs; /* References for this ID. */
39 };
40
41 static struct ref *get_ref_head();
42 static struct ref_list *get_ref_list(const char *id);
43 static void foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data);
44 static int load_refs(void);
45
46 enum input_status {
47 INPUT_OK,
48 INPUT_SKIP,
49 INPUT_STOP,
50 INPUT_CANCEL
51 };
52
53 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
54
55 static char *prompt_input(const char *prompt, input_handler handler, void *data);
56 static bool prompt_yesno(const char *prompt);
57 static char *read_prompt(const char *prompt);
58
59 struct menu_item {
60 int hotkey;
61 const char *text;
62 void *data;
63 };
64
65 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected);
66
67 #define GRAPHIC_ENUM(_) \
68 _(GRAPHIC, ASCII), \
69 _(GRAPHIC, DEFAULT), \
70 _(GRAPHIC, UTF_8)
71
72 DEFINE_ENUM(graphic, GRAPHIC_ENUM);
73
74 #define DATE_ENUM(_) \
75 _(DATE, NO), \
76 _(DATE, DEFAULT), \
77 _(DATE, LOCAL), \
78 _(DATE, RELATIVE), \
79 _(DATE, SHORT)
80
81 DEFINE_ENUM(date, DATE_ENUM);
82
83 struct time {
84 time_t sec;
85 int tz;
86 };
87
88 static inline int timecmp(const struct time *t1, const struct time *t2)
89 {
90 return t1->sec - t2->sec;
91 }
92
93 static const char *
94 mkdate(const struct time *time, enum date date)
95 {
96 static char buf[DATE_COLS + 1];
97 static const struct enum_map reldate[] = {
98 { "second", 1, 60 * 2 },
99 { "minute", 60, 60 * 60 * 2 },
100 { "hour", 60 * 60, 60 * 60 * 24 * 2 },
101 { "day", 60 * 60 * 24, 60 * 60 * 24 * 7 * 2 },
102 { "week", 60 * 60 * 24 * 7, 60 * 60 * 24 * 7 * 5 },
103 { "month", 60 * 60 * 24 * 30, 60 * 60 * 24 * 30 * 12 },
104 };
105 struct tm tm;
106
107 if (!date || !time || !time->sec)
108 return "";
109
110 if (date == DATE_RELATIVE) {
111 struct timeval now;
112 time_t date = time->sec + time->tz;
113 time_t seconds;
114 int i;
115
116 gettimeofday(&now, NULL);
117 seconds = now.tv_sec < date ? date - now.tv_sec : now.tv_sec - date;
118 for (i = 0; i < ARRAY_SIZE(reldate); i++) {
119 if (seconds >= reldate[i].value)
120 continue;
121
122 seconds /= reldate[i].namelen;
123 if (!string_format(buf, "%ld %s%s %s",
124 seconds, reldate[i].name,
125 seconds > 1 ? "s" : "",
126 now.tv_sec >= date ? "ago" : "ahead"))
127 break;
128 return buf;
129 }
130 }
131
132 if (date == DATE_LOCAL) {
133 time_t date = time->sec + time->tz;
134 localtime_r(&date, &tm);
135 }
136 else {
137 gmtime_r(&time->sec, &tm);
138 }
139 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
140 }
141
142
143 #define AUTHOR_ENUM(_) \
144 _(AUTHOR, NO), \
145 _(AUTHOR, FULL), \
146 _(AUTHOR, ABBREVIATED)
147
148 DEFINE_ENUM(author, AUTHOR_ENUM);
149
150 static const char *
151 get_author_initials(const char *author)
152 {
153 static char initials[AUTHOR_COLS * 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 #define author_trim(cols) (cols == 0 || cols > 5)
194
195 static const char *
196 mkauthor(const char *text, int cols, enum author author)
197 {
198 bool trim = author_trim(cols);
199 bool abbreviate = author == AUTHOR_ABBREVIATED || !trim;
200
201 if (author == AUTHOR_NO)
202 return "";
203 if (abbreviate && text)
204 return get_author_initials(text);
205 return text;
206 }
207
208 static const char *
209 mkmode(mode_t mode)
210 {
211 if (S_ISDIR(mode))
212 return "drwxr-xr-x";
213 else if (S_ISLNK(mode))
214 return "lrwxrwxrwx";
215 else if (S_ISGITLINK(mode))
216 return "m---------";
217 else if (S_ISREG(mode) && mode & S_IXUSR)
218 return "-rwxr-xr-x";
219 else if (S_ISREG(mode))
220 return "-rw-r--r--";
221 else
222 return "----------";
223 }
224
225 #define FILENAME_ENUM(_) \
226 _(FILENAME, NO), \
227 _(FILENAME, ALWAYS), \
228 _(FILENAME, AUTO)
229
230 DEFINE_ENUM(filename, FILENAME_ENUM);
231
232 #define IGNORE_SPACE_ENUM(_) \
233 _(IGNORE_SPACE, NO), \
234 _(IGNORE_SPACE, ALL), \
235 _(IGNORE_SPACE, SOME), \
236 _(IGNORE_SPACE, AT_EOL)
237
238 DEFINE_ENUM(ignore_space, IGNORE_SPACE_ENUM);
239
240 #define COMMIT_ORDER_ENUM(_) \
241 _(COMMIT_ORDER, DEFAULT), \
242 _(COMMIT_ORDER, TOPO), \
243 _(COMMIT_ORDER, DATE), \
244 _(COMMIT_ORDER, REVERSE)
245
246 DEFINE_ENUM(commit_order, COMMIT_ORDER_ENUM);
247
248 #define VIEW_INFO(_) \
249 _(MAIN, main, ref_head), \
250 _(DIFF, diff, ref_commit), \
251 _(LOG, log, ref_head), \
252 _(TREE, tree, ref_commit), \
253 _(BLOB, blob, ref_blob), \
254 _(BLAME, blame, ref_commit), \
255 _(BRANCH, branch, ref_head), \
256 _(HELP, help, ""), \
257 _(PAGER, pager, ""), \
258 _(STATUS, status, "status"), \
259 _(STAGE, stage, "stage")
260
261 static struct encoding *
262 get_path_encoding(const char *path, struct encoding *default_encoding)
263 {
264 const char *check_attr_argv[] = {
265 "git", "check-attr", "encoding", "--", path, NULL
266 };
267 char buf[SIZEOF_STR];
268 char *encoding;
269
270 /* <path>: encoding: <encoding> */
271
272 if (!*path || !io_run_buf(check_attr_argv, buf, sizeof(buf))
273 || !(encoding = strstr(buf, ENCODING_SEP)))
274 return default_encoding;
275
276 encoding += STRING_SIZE(ENCODING_SEP);
277 if (!strcmp(encoding, ENCODING_UTF8)
278 || !strcmp(encoding, "unspecified")
279 || !strcmp(encoding, "set"))
280 return default_encoding;
281
282 return encoding_open(encoding);
283 }
284
285 /*
286 * User requests
287 */
288
289 #define VIEW_REQ(id, name, ref) REQ_(VIEW_##id, "Show " #name " view")
290
291 #define REQ_INFO \
292 REQ_GROUP("View switching") \
293 VIEW_INFO(VIEW_REQ), \
294 \
295 REQ_GROUP("View manipulation") \
296 REQ_(ENTER, "Enter current line and scroll"), \
297 REQ_(NEXT, "Move to next"), \
298 REQ_(PREVIOUS, "Move to previous"), \
299 REQ_(PARENT, "Move to parent"), \
300 REQ_(VIEW_NEXT, "Move focus to next view"), \
301 REQ_(REFRESH, "Reload and refresh"), \
302 REQ_(MAXIMIZE, "Maximize the current view"), \
303 REQ_(VIEW_CLOSE, "Close the current view"), \
304 REQ_(QUIT, "Close all views and quit"), \
305 \
306 REQ_GROUP("View specific requests") \
307 REQ_(STATUS_UPDATE, "Update file status"), \
308 REQ_(STATUS_REVERT, "Revert file changes"), \
309 REQ_(STATUS_MERGE, "Merge file using external tool"), \
310 REQ_(STAGE_UPDATE_LINE, "Update single line"), \
311 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
312 REQ_(DIFF_CONTEXT_DOWN, "Decrease the diff context"), \
313 REQ_(DIFF_CONTEXT_UP, "Increase the diff context"), \
314 \
315 REQ_GROUP("Cursor navigation") \
316 REQ_(MOVE_UP, "Move cursor one line up"), \
317 REQ_(MOVE_DOWN, "Move cursor one line down"), \
318 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
319 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
320 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
321 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
322 \
323 REQ_GROUP("Scrolling") \
324 REQ_(SCROLL_FIRST_COL, "Scroll to the first line columns"), \
325 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
326 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
327 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
328 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
329 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
330 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
331 \
332 REQ_GROUP("Searching") \
333 REQ_(SEARCH, "Search the view"), \
334 REQ_(SEARCH_BACK, "Search backwards in the view"), \
335 REQ_(FIND_NEXT, "Find next search match"), \
336 REQ_(FIND_PREV, "Find previous search match"), \
337 \
338 REQ_GROUP("Option manipulation") \
339 REQ_(OPTIONS, "Open option menu"), \
340 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
341 REQ_(TOGGLE_DATE, "Toggle date display"), \
342 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
343 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
344 REQ_(TOGGLE_GRAPHIC, "Toggle (line) graphics mode"), \
345 REQ_(TOGGLE_FILENAME, "Toggle file name display"), \
346 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
347 REQ_(TOGGLE_CHANGES, "Toggle local changes display in the main view"), \
348 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
349 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
350 REQ_(TOGGLE_IGNORE_SPACE, "Toggle ignoring whitespace in diffs"), \
351 REQ_(TOGGLE_COMMIT_ORDER, "Toggle commit ordering"), \
352 \
353 REQ_GROUP("Misc") \
354 REQ_(PROMPT, "Bring up the prompt"), \
355 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
356 REQ_(SHOW_VERSION, "Show version information"), \
357 REQ_(STOP_LOADING, "Stop all loading views"), \
358 REQ_(EDIT, "Open in editor"), \
359 REQ_(NONE, "Do nothing")
360
361
362 /* User action requests. */
363 enum request {
364 #define REQ_GROUP(help)
365 #define REQ_(req, help) REQ_##req
366
367 /* Offset all requests to avoid conflicts with ncurses getch values. */
368 REQ_UNKNOWN = KEY_MAX + 1,
369 REQ_OFFSET,
370 REQ_INFO,
371
372 /* Internal requests. */
373 REQ_JUMP_COMMIT,
374
375 #undef REQ_GROUP
376 #undef REQ_
377 };
378
379 struct request_info {
380 enum request request;
381 const char *name;
382 int namelen;
383 const char *help;
384 };
385
386 static const struct request_info req_info[] = {
387 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
388 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
389 REQ_INFO
390 #undef REQ_GROUP
391 #undef REQ_
392 };
393
394 static enum request
395 get_request(const char *name)
396 {
397 int namelen = strlen(name);
398 int i;
399
400 for (i = 0; i < ARRAY_SIZE(req_info); i++)
401 if (enum_equals(req_info[i], name, namelen))
402 return req_info[i].request;
403
404 return REQ_UNKNOWN;
405 }
406
407
408 /*
409 * Options
410 */
411
412 /* Option and state variables. */
413 static enum graphic opt_line_graphics = GRAPHIC_DEFAULT;
414 static enum date opt_date = DATE_DEFAULT;
415 static enum author opt_author = AUTHOR_FULL;
416 static enum filename opt_filename = FILENAME_AUTO;
417 static bool opt_rev_graph = TRUE;
418 static bool opt_line_number = FALSE;
419 static bool opt_show_refs = TRUE;
420 static bool opt_show_changes = TRUE;
421 static bool opt_untracked_dirs_content = TRUE;
422 static bool opt_read_git_colors = TRUE;
423 static int opt_diff_context = 3;
424 static char opt_diff_context_arg[9] = "";
425 static enum ignore_space opt_ignore_space = IGNORE_SPACE_NO;
426 static char opt_ignore_space_arg[22] = "";
427 static enum commit_order opt_commit_order = COMMIT_ORDER_DEFAULT;
428 static char opt_commit_order_arg[22] = "";
429 static bool opt_notes = TRUE;
430 static char opt_notes_arg[SIZEOF_STR] = "--show-notes";
431 static int opt_num_interval = 5;
432 static double opt_hscroll = 0.50;
433 static double opt_scale_split_view = 2.0 / 3.0;
434 static int opt_tab_size = 8;
435 static int opt_author_cols = AUTHOR_COLS;
436 static int opt_filename_cols = FILENAME_COLS;
437 static char opt_path[SIZEOF_STR] = "";
438 static char opt_file[SIZEOF_STR] = "";
439 static char opt_ref[SIZEOF_REF] = "";
440 static unsigned long opt_goto_line = 0;
441 static char opt_head[SIZEOF_REF] = "";
442 static char opt_remote[SIZEOF_REF] = "";
443 static struct encoding *opt_encoding = NULL;
444 static iconv_t opt_iconv_out = ICONV_NONE;
445 static char opt_search[SIZEOF_STR] = "";
446 static char opt_cdup[SIZEOF_STR] = "";
447 static char opt_prefix[SIZEOF_STR] = "";
448 static char opt_git_dir[SIZEOF_STR] = "";
449 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
450 static char opt_editor[SIZEOF_STR] = "";
451 static FILE *opt_tty = NULL;
452 static const char **opt_diff_argv = NULL;
453 static const char **opt_rev_argv = NULL;
454 static const char **opt_file_argv = NULL;
455 static const char **opt_blame_argv = NULL;
456 static int opt_lineno = 0;
457
458 #define is_initial_commit() (!get_ref_head())
459 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strcmp(rev, get_ref_head()->id)))
460
461 static inline void
462 update_diff_context_arg(int diff_context)
463 {
464 if (!string_format(opt_diff_context_arg, "-U%u", diff_context))
465 string_ncopy(opt_diff_context_arg, "-U3", 3);
466 }
467
468 static inline void
469 update_ignore_space_arg()
470 {
471 if (opt_ignore_space == IGNORE_SPACE_ALL) {
472 string_copy(opt_ignore_space_arg, "--ignore-all-space");
473 } else if (opt_ignore_space == IGNORE_SPACE_SOME) {
474 string_copy(opt_ignore_space_arg, "--ignore-space-change");
475 } else if (opt_ignore_space == IGNORE_SPACE_AT_EOL) {
476 string_copy(opt_ignore_space_arg, "--ignore-space-at-eol");
477 } else {
478 string_copy(opt_ignore_space_arg, "");
479 }
480 }
481
482 static inline void
483 update_commit_order_arg()
484 {
485 if (opt_commit_order == COMMIT_ORDER_TOPO) {
486 string_copy(opt_commit_order_arg, "--topo-order");
487 } else if (opt_commit_order == COMMIT_ORDER_DATE) {
488 string_copy(opt_commit_order_arg, "--date-order");
489 } else if (opt_commit_order == COMMIT_ORDER_REVERSE) {
490 string_copy(opt_commit_order_arg, "--reverse");
491 } else {
492 string_copy(opt_commit_order_arg, "");
493 }
494 }
495
496 static inline void
497 update_notes_arg()
498 {
499 if (opt_notes) {
500 string_copy(opt_notes_arg, "--show-notes");
501 } else {
502 /* Notes are disabled by default when passing --pretty args. */
503 string_copy(opt_notes_arg, "");
504 }
505 }
506
507 /*
508 * Line-oriented content detection.
509 */
510
511 #define LINE_INFO \
512 LINE(DIFF_HEADER, "diff --", COLOR_YELLOW, COLOR_DEFAULT, 0), \
513 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
514 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
515 LINE(DIFF_ADD2, " +", COLOR_GREEN, COLOR_DEFAULT, 0), \
516 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
517 LINE(DIFF_DEL2, " -", COLOR_RED, COLOR_DEFAULT, 0), \
518 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
519 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
520 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
521 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
522 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
523 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
524 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
525 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
526 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
527 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
528 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
529 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
530 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
531 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
532 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
533 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
534 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
535 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
536 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
537 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
538 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
539 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
540 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
541 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
542 LINE(TESTED, " Tested-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
543 LINE(REVIEWED, " Reviewed-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
544 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
545 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
546 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
547 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
548 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
549 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
550 LINE(FILENAME, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
551 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
552 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
553 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
554 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
555 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
556 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
557 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
558 LINE(MAIN_REPLACE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
559 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
560 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
561 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
562 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
563 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
564 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
565 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
566 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
567 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
568 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
569 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
570 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
571 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
572 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
573 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
574 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
575 LINE(DIFF_STAT, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
576 LINE(PALETTE_0, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
577 LINE(PALETTE_1, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
578 LINE(PALETTE_2, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
579 LINE(PALETTE_3, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
580 LINE(PALETTE_4, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
581 LINE(PALETTE_5, "", COLOR_WHITE, COLOR_DEFAULT, 0), \
582 LINE(PALETTE_6, "", COLOR_RED, COLOR_DEFAULT, 0), \
583 LINE(GRAPH_COMMIT, "", COLOR_BLUE, COLOR_DEFAULT, 0)
584
585 enum line_type {
586 #define LINE(type, line, fg, bg, attr) \
587 LINE_##type
588 LINE_INFO,
589 LINE_NONE
590 #undef LINE
591 };
592
593 struct line_info {
594 const char *name; /* Option name. */
595 int namelen; /* Size of option name. */
596 const char *line; /* The start of line to match. */
597 int linelen; /* Size of string to match. */
598 int fg, bg, attr; /* Color and text attributes for the lines. */
599 int color_pair;
600 };
601
602 static struct line_info line_info[] = {
603 #define LINE(type, line, fg, bg, attr) \
604 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
605 LINE_INFO
606 #undef LINE
607 };
608
609 static struct line_info **color_pair;
610 static size_t color_pairs;
611
612 static struct line_info *custom_color;
613 static size_t custom_colors;
614
615 DEFINE_ALLOCATOR(realloc_custom_color, struct line_info, 8)
616 DEFINE_ALLOCATOR(realloc_color_pair, struct line_info *, 8)
617
618 #define TO_CUSTOM_COLOR_TYPE(type) (LINE_NONE + 1 + (type))
619 #define TO_CUSTOM_COLOR_OFFSET(type) ((type) - LINE_NONE - 1)
620
621 /* Color IDs must be 1 or higher. [GH #15] */
622 #define COLOR_ID(line_type) ((line_type) + 1)
623
624 static enum line_type
625 get_line_type(const char *line)
626 {
627 int linelen = strlen(line);
628 enum line_type type;
629
630 for (type = 0; type < custom_colors; type++)
631 /* Case insensitive search matches Signed-off-by lines better. */
632 if (linelen >= custom_color[type].linelen &&
633 !strncasecmp(custom_color[type].line, line, custom_color[type].linelen))
634 return TO_CUSTOM_COLOR_TYPE(type);
635
636 for (type = 0; type < ARRAY_SIZE(line_info); type++)
637 /* Case insensitive search matches Signed-off-by lines better. */
638 if (linelen >= line_info[type].linelen &&
639 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
640 return type;
641
642 return LINE_DEFAULT;
643 }
644
645 static enum line_type
646 get_line_type_from_ref(const struct ref *ref)
647 {
648 if (ref->head)
649 return LINE_MAIN_HEAD;
650 else if (ref->ltag)
651 return LINE_MAIN_LOCAL_TAG;
652 else if (ref->tag)
653 return LINE_MAIN_TAG;
654 else if (ref->tracked)
655 return LINE_MAIN_TRACKED;
656 else if (ref->remote)
657 return LINE_MAIN_REMOTE;
658 else if (ref->replace)
659 return LINE_MAIN_REPLACE;
660
661 return LINE_MAIN_REF;
662 }
663
664 static inline struct line_info *
665 get_line(enum line_type type)
666 {
667 struct line_info *info;
668
669 if (type > LINE_NONE) {
670 assert(TO_CUSTOM_COLOR_OFFSET(type) < custom_colors);
671 return &custom_color[TO_CUSTOM_COLOR_OFFSET(type)];
672 } else {
673 assert(type < ARRAY_SIZE(line_info));
674 return &line_info[type];
675 }
676 }
677
678 static inline int
679 get_line_color(enum line_type type)
680 {
681 return COLOR_ID(get_line(type)->color_pair);
682 }
683
684 static inline int
685 get_line_attr(enum line_type type)
686 {
687 struct line_info *info = get_line(type);
688
689 return COLOR_PAIR(COLOR_ID(info->color_pair)) | info->attr;
690 }
691
692 static struct line_info *
693 get_line_info(const char *name)
694 {
695 size_t namelen = strlen(name);
696 enum line_type type;
697
698 for (type = 0; type < ARRAY_SIZE(line_info); type++)
699 if (enum_equals(line_info[type], name, namelen))
700 return &line_info[type];
701
702 return NULL;
703 }
704
705 static struct line_info *
706 add_custom_color(const char *quoted_line)
707 {
708 struct line_info *info;
709 char *line;
710 size_t linelen;
711
712 if (!realloc_custom_color(&custom_color, custom_colors, 1))
713 die("Failed to alloc custom line info");
714
715 linelen = strlen(quoted_line) - 1;
716 line = malloc(linelen);
717 if (!line)
718 return NULL;
719
720 strncpy(line, quoted_line + 1, linelen);
721 line[linelen - 1] = 0;
722
723 info = &custom_color[custom_colors++];
724 info->name = info->line = line;
725 info->namelen = info->linelen = strlen(line);
726
727 return info;
728 }
729
730 static void
731 init_line_info_color_pair(struct line_info *info, enum line_type type,
732 int default_bg, int default_fg)
733 {
734 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
735 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
736 int i;
737
738 for (i = 0; i < color_pairs; i++) {
739 if (color_pair[i]->fg == info->fg && color_pair[i]->bg == info->bg) {
740 info->color_pair = i;
741 return;
742 }
743 }
744
745 if (!realloc_color_pair(&color_pair, color_pairs, 1))
746 die("Failed to alloc color pair");
747
748 color_pair[color_pairs] = info;
749 info->color_pair = color_pairs++;
750 init_pair(COLOR_ID(info->color_pair), fg, bg);
751 }
752
753 static void
754 init_colors(void)
755 {
756 int default_bg = line_info[LINE_DEFAULT].bg;
757 int default_fg = line_info[LINE_DEFAULT].fg;
758 enum line_type type;
759
760 start_color();
761
762 if (assume_default_colors(default_fg, default_bg) == ERR) {
763 default_bg = COLOR_BLACK;
764 default_fg = COLOR_WHITE;
765 }
766
767 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
768 struct line_info *info = &line_info[type];
769
770 init_line_info_color_pair(info, type, default_bg, default_fg);
771 }
772
773 for (type = 0; type < custom_colors; type++) {
774 struct line_info *info = &custom_color[type];
775
776 init_line_info_color_pair(info, TO_CUSTOM_COLOR_TYPE(type),
777 default_bg, default_fg);
778 }
779 }
780
781 struct line {
782 enum line_type type;
783
784 /* State flags */
785 unsigned int selected:1;
786 unsigned int dirty:1;
787 unsigned int cleareol:1;
788 unsigned int dont_free:1;
789 unsigned int other:16;
790
791 void *data; /* User data */
792 };
793
794
795 /*
796 * Keys
797 */
798
799 struct keybinding {
800 int alias;
801 enum request request;
802 };
803
804 static struct keybinding default_keybindings[] = {
805 /* View switching */
806 { 'm', REQ_VIEW_MAIN },
807 { 'd', REQ_VIEW_DIFF },
808 { 'l', REQ_VIEW_LOG },
809 { 't', REQ_VIEW_TREE },
810 { 'f', REQ_VIEW_BLOB },
811 { 'B', REQ_VIEW_BLAME },
812 { 'H', REQ_VIEW_BRANCH },
813 { 'p', REQ_VIEW_PAGER },
814 { 'h', REQ_VIEW_HELP },
815 { 'S', REQ_VIEW_STATUS },
816 { 'c', REQ_VIEW_STAGE },
817
818 /* View manipulation */
819 { 'q', REQ_VIEW_CLOSE },
820 { KEY_TAB, REQ_VIEW_NEXT },
821 { KEY_RETURN, REQ_ENTER },
822 { KEY_UP, REQ_PREVIOUS },
823 { KEY_CTL('P'), REQ_PREVIOUS },
824 { KEY_DOWN, REQ_NEXT },
825 { KEY_CTL('N'), REQ_NEXT },
826 { 'R', REQ_REFRESH },
827 { KEY_F(5), REQ_REFRESH },
828 { 'O', REQ_MAXIMIZE },
829 { ',', REQ_PARENT },
830
831 /* View specific */
832 { 'u', REQ_STATUS_UPDATE },
833 { '!', REQ_STATUS_REVERT },
834 { 'M', REQ_STATUS_MERGE },
835 { '1', REQ_STAGE_UPDATE_LINE },
836 { '@', REQ_STAGE_NEXT },
837 { '[', REQ_DIFF_CONTEXT_DOWN },
838 { ']', REQ_DIFF_CONTEXT_UP },
839
840 /* Cursor navigation */
841 { 'k', REQ_MOVE_UP },
842 { 'j', REQ_MOVE_DOWN },
843 { KEY_HOME, REQ_MOVE_FIRST_LINE },
844 { KEY_END, REQ_MOVE_LAST_LINE },
845 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
846 { KEY_CTL('D'), REQ_MOVE_PAGE_DOWN },
847 { ' ', REQ_MOVE_PAGE_DOWN },
848 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
849 { KEY_CTL('U'), REQ_MOVE_PAGE_UP },
850 { 'b', REQ_MOVE_PAGE_UP },
851 { '-', REQ_MOVE_PAGE_UP },
852
853 /* Scrolling */
854 { '|', REQ_SCROLL_FIRST_COL },
855 { KEY_LEFT, REQ_SCROLL_LEFT },
856 { KEY_RIGHT, REQ_SCROLL_RIGHT },
857 { KEY_IC, REQ_SCROLL_LINE_UP },
858 { KEY_CTL('Y'), REQ_SCROLL_LINE_UP },
859 { KEY_DC, REQ_SCROLL_LINE_DOWN },
860 { KEY_CTL('E'), REQ_SCROLL_LINE_DOWN },
861 { 'w', REQ_SCROLL_PAGE_UP },
862 { 's', REQ_SCROLL_PAGE_DOWN },
863
864 /* Searching */
865 { '/', REQ_SEARCH },
866 { '?', REQ_SEARCH_BACK },
867 { 'n', REQ_FIND_NEXT },
868 { 'N', REQ_FIND_PREV },
869
870 /* Misc */
871 { 'Q', REQ_QUIT },
872 { 'z', REQ_STOP_LOADING },
873 { 'v', REQ_SHOW_VERSION },
874 { 'r', REQ_SCREEN_REDRAW },
875 { KEY_CTL('L'), REQ_SCREEN_REDRAW },
876 { 'o', REQ_OPTIONS },
877 { '.', REQ_TOGGLE_LINENO },
878 { 'D', REQ_TOGGLE_DATE },
879 { 'A', REQ_TOGGLE_AUTHOR },
880 { 'g', REQ_TOGGLE_REV_GRAPH },
881 { '~', REQ_TOGGLE_GRAPHIC },
882 { '#', REQ_TOGGLE_FILENAME },
883 { 'F', REQ_TOGGLE_REFS },
884 { 'I', REQ_TOGGLE_SORT_ORDER },
885 { 'i', REQ_TOGGLE_SORT_FIELD },
886 { 'W', REQ_TOGGLE_IGNORE_SPACE },
887 { ':', REQ_PROMPT },
888 { 'e', REQ_EDIT },
889 };
890
891 #define KEYMAP_ENUM(_) \
892 _(KEYMAP, GENERIC), \
893 _(KEYMAP, MAIN), \
894 _(KEYMAP, DIFF), \
895 _(KEYMAP, LOG), \
896 _(KEYMAP, TREE), \
897 _(KEYMAP, BLOB), \
898 _(KEYMAP, BLAME), \
899 _(KEYMAP, BRANCH), \
900 _(KEYMAP, PAGER), \
901 _(KEYMAP, HELP), \
902 _(KEYMAP, STATUS), \
903 _(KEYMAP, STAGE)
904
905 DEFINE_ENUM(keymap, KEYMAP_ENUM);
906
907 #define set_keymap(map, name) map_enum(map, keymap_map, name)
908
909 struct keybinding_table {
910 struct keybinding *data;
911 size_t size;
912 bool hidden;
913 };
914
915 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_map)];
916
917 static void
918 add_keybinding(enum keymap keymap, enum request request, int key)
919 {
920 struct keybinding_table *table = &keybindings[keymap];
921 size_t i;
922
923 for (i = 0; i < table->size; i++) {
924 if (table->data[i].alias == key) {
925 table->data[i].request = request;
926 return;
927 }
928 }
929
930 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
931 if (!table->data)
932 die("Failed to allocate keybinding");
933 table->data[table->size].alias = key;
934 table->data[table->size++].request = request;
935
936 if (request == REQ_NONE && keymap == KEYMAP_GENERIC) {
937 int i;
938
939 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
940 if (default_keybindings[i].alias == key)
941 default_keybindings[i].request = REQ_NONE;
942 }
943 }
944
945 /* Looks for a key binding first in the given map, then in the generic map, and
946 * lastly in the default keybindings. */
947 static enum request
948 get_keybinding(enum keymap keymap, int key)
949 {
950 size_t i;
951
952 for (i = 0; i < keybindings[keymap].size; i++)
953 if (keybindings[keymap].data[i].alias == key)
954 return keybindings[keymap].data[i].request;
955
956 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
957 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
958 return keybindings[KEYMAP_GENERIC].data[i].request;
959
960 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
961 if (default_keybindings[i].alias == key)
962 return default_keybindings[i].request;
963
964 return (enum request) key;
965 }
966
967
968 struct key {
969 const char *name;
970 int value;
971 };
972
973 static const struct key key_table[] = {
974 { "Enter", KEY_RETURN },
975 { "Space", ' ' },
976 { "Backspace", KEY_BACKSPACE },
977 { "Tab", KEY_TAB },
978 { "Escape", KEY_ESC },
979 { "Left", KEY_LEFT },
980 { "Right", KEY_RIGHT },
981 { "Up", KEY_UP },
982 { "Down", KEY_DOWN },
983 { "Insert", KEY_IC },
984 { "Delete", KEY_DC },
985 { "Hash", '#' },
986 { "Home", KEY_HOME },
987 { "End", KEY_END },
988 { "PageUp", KEY_PPAGE },
989 { "PageDown", KEY_NPAGE },
990 { "F1", KEY_F(1) },
991 { "F2", KEY_F(2) },
992 { "F3", KEY_F(3) },
993 { "F4", KEY_F(4) },
994 { "F5", KEY_F(5) },
995 { "F6", KEY_F(6) },
996 { "F7", KEY_F(7) },
997 { "F8", KEY_F(8) },
998 { "F9", KEY_F(9) },
999 { "F10", KEY_F(10) },
1000 { "F11", KEY_F(11) },
1001 { "F12", KEY_F(12) },
1002 };
1003
1004 static int
1005 get_key_value(const char *name)
1006 {
1007 int i;
1008
1009 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1010 if (!strcasecmp(key_table[i].name, name))
1011 return key_table[i].value;
1012
1013 if (strlen(name) == 2 && name[0] == '^' && isprint(*name))
1014 return (int)name[1] & 0x1f;
1015 if (strlen(name) == 1 && isprint(*name))
1016 return (int) *name;
1017 return ERR;
1018 }
1019
1020 static const char *
1021 get_key_name(int key_value)
1022 {
1023 static char key_char[] = "'X'\0";
1024 const char *seq = NULL;
1025 int key;
1026
1027 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1028 if (key_table[key].value == key_value)
1029 seq = key_table[key].name;
1030
1031 if (seq == NULL && key_value < 0x7f) {
1032 char *s = key_char + 1;
1033
1034 if (key_value >= 0x20) {
1035 *s++ = key_value;
1036 } else {
1037 *s++ = '^';
1038 *s++ = 0x40 | (key_value & 0x1f);
1039 }
1040 *s++ = '\'';
1041 *s++ = '\0';
1042 seq = key_char;
1043 }
1044
1045 return seq ? seq : "(no key)";
1046 }
1047
1048 static bool
1049 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
1050 {
1051 const char *sep = *pos > 0 ? ", " : "";
1052 const char *keyname = get_key_name(keybinding->alias);
1053
1054 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
1055 }
1056
1057 static bool
1058 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
1059 enum keymap keymap, bool all)
1060 {
1061 int i;
1062
1063 for (i = 0; i < keybindings[keymap].size; i++) {
1064 if (keybindings[keymap].data[i].request == request) {
1065 if (!append_key(buf, pos, &keybindings[keymap].data[i]))
1066 return FALSE;
1067 if (!all)
1068 break;
1069 }
1070 }
1071
1072 return TRUE;
1073 }
1074
1075 #define get_view_key(view, request) get_keys((view)->keymap, request, FALSE)
1076
1077 static const char *
1078 get_keys(enum keymap keymap, enum request request, bool all)
1079 {
1080 static char buf[BUFSIZ];
1081 size_t pos = 0;
1082 int i;
1083
1084 buf[pos] = 0;
1085
1086 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
1087 return "Too many keybindings!";
1088 if (pos > 0 && !all)
1089 return buf;
1090
1091 if (keymap != KEYMAP_GENERIC) {
1092 /* Only the generic keymap includes the default keybindings when
1093 * listing all keys. */
1094 if (all)
1095 return buf;
1096
1097 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
1098 return "Too many keybindings!";
1099 if (pos)
1100 return buf;
1101 }
1102
1103 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1104 if (default_keybindings[i].request == request) {
1105 if (!append_key(buf, &pos, &default_keybindings[i]))
1106 return "Too many keybindings!";
1107 if (!all)
1108 return buf;
1109 }
1110 }
1111
1112 return buf;
1113 }
1114
1115 struct run_request {
1116 enum keymap keymap;
1117 int key;
1118 const char **argv;
1119 bool silent;
1120 };
1121
1122 static struct run_request *run_request;
1123 static size_t run_requests;
1124
1125 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
1126
1127 static bool
1128 add_run_request(enum keymap keymap, int key, const char **argv, bool silent, bool force)
1129 {
1130 struct run_request *req;
1131
1132 if (!force && get_keybinding(keymap, key) != key)
1133 return TRUE;
1134
1135 if (!realloc_run_requests(&run_request, run_requests, 1))
1136 return FALSE;
1137
1138 if (!argv_copy(&run_request[run_requests].argv, argv))
1139 return FALSE;
1140
1141 req = &run_request[run_requests++];
1142 req->silent = silent;
1143 req->keymap = keymap;
1144 req->key = key;
1145
1146 add_keybinding(keymap, REQ_NONE + run_requests, key);
1147 return TRUE;
1148 }
1149
1150 static struct run_request *
1151 get_run_request(enum request request)
1152 {
1153 if (request <= REQ_NONE || request > REQ_NONE + run_requests)
1154 return NULL;
1155 return &run_request[request - REQ_NONE - 1];
1156 }
1157
1158 static void
1159 add_builtin_run_requests(void)
1160 {
1161 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1162 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
1163 const char *commit[] = { "git", "commit", NULL };
1164 const char *gc[] = { "git", "gc", NULL };
1165
1166 add_run_request(KEYMAP_MAIN, 'C', cherry_pick, FALSE, FALSE);
1167 add_run_request(KEYMAP_STATUS, 'C', commit, FALSE, FALSE);
1168 add_run_request(KEYMAP_BRANCH, 'C', checkout, FALSE, FALSE);
1169 add_run_request(KEYMAP_GENERIC, 'G', gc, FALSE, FALSE);
1170 }
1171
1172 /*
1173 * User config file handling.
1174 */
1175
1176 #define OPT_ERR_INFO \
1177 OPT_ERR_(INTEGER_VALUE_OUT_OF_BOUND, "Integer value out of bound"), \
1178 OPT_ERR_(INVALID_STEP_VALUE, "Invalid step value"), \
1179 OPT_ERR_(NO_OPTION_VALUE, "No option value"), \
1180 OPT_ERR_(NO_VALUE_ASSIGNED, "No value assigned"), \
1181 OPT_ERR_(OBSOLETE_REQUEST_NAME, "Obsolete request name"), \
1182 OPT_ERR_(OUT_OF_MEMORY, "Out of memory"), \
1183 OPT_ERR_(TOO_MANY_OPTION_ARGUMENTS, "Too many option arguments"), \
1184 OPT_ERR_(FILE_DOES_NOT_EXIST, "File does not exist"), \
1185 OPT_ERR_(UNKNOWN_ATTRIBUTE, "Unknown attribute"), \
1186 OPT_ERR_(UNKNOWN_COLOR, "Unknown color"), \
1187 OPT_ERR_(UNKNOWN_COLOR_NAME, "Unknown color name"), \
1188 OPT_ERR_(UNKNOWN_KEY, "Unknown key"), \
1189 OPT_ERR_(UNKNOWN_KEY_MAP, "Unknown key map"), \
1190 OPT_ERR_(UNKNOWN_OPTION_COMMAND, "Unknown option command"), \
1191 OPT_ERR_(UNKNOWN_REQUEST_NAME, "Unknown request name"), \
1192 OPT_ERR_(OBSOLETE_VARIABLE_NAME, "Obsolete variable name"), \
1193 OPT_ERR_(UNKNOWN_VARIABLE_NAME, "Unknown variable name"), \
1194 OPT_ERR_(UNMATCHED_QUOTATION, "Unmatched quotation"), \
1195 OPT_ERR_(WRONG_NUMBER_OF_ARGUMENTS, "Wrong number of arguments"),
1196
1197 enum option_code {
1198 #define OPT_ERR_(name, msg) OPT_ERR_ ## name
1199 OPT_ERR_INFO
1200 #undef OPT_ERR_
1201 OPT_OK
1202 };
1203
1204 static const char *option_errors[] = {
1205 #define OPT_ERR_(name, msg) msg
1206 OPT_ERR_INFO
1207 #undef OPT_ERR_
1208 };
1209
1210 static const struct enum_map color_map[] = {
1211 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
1212 COLOR_MAP(DEFAULT),
1213 COLOR_MAP(BLACK),
1214 COLOR_MAP(BLUE),
1215 COLOR_MAP(CYAN),
1216 COLOR_MAP(GREEN),
1217 COLOR_MAP(MAGENTA),
1218 COLOR_MAP(RED),
1219 COLOR_MAP(WHITE),
1220 COLOR_MAP(YELLOW),
1221 };
1222
1223 static const struct enum_map attr_map[] = {
1224 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
1225 ATTR_MAP(NORMAL),
1226 ATTR_MAP(BLINK),
1227 ATTR_MAP(BOLD),
1228 ATTR_MAP(DIM),
1229 ATTR_MAP(REVERSE),
1230 ATTR_MAP(STANDOUT),
1231 ATTR_MAP(UNDERLINE),
1232 };
1233
1234 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
1235
1236 static enum option_code
1237 parse_step(double *opt, const char *arg)
1238 {
1239 *opt = atoi(arg);
1240 if (!strchr(arg, '%'))
1241 return OPT_OK;
1242
1243 /* "Shift down" so 100% and 1 does not conflict. */
1244 *opt = (*opt - 1) / 100;
1245 if (*opt >= 1.0) {
1246 *opt = 0.99;
1247 return OPT_ERR_INVALID_STEP_VALUE;
1248 }
1249 if (*opt < 0.0) {
1250 *opt = 1;
1251 return OPT_ERR_INVALID_STEP_VALUE;
1252 }
1253 return OPT_OK;
1254 }
1255
1256 static enum option_code
1257 parse_int(int *opt, const char *arg, int min, int max)
1258 {
1259 int value = atoi(arg);
1260
1261 if (min <= value && value <= max) {
1262 *opt = value;
1263 return OPT_OK;
1264 }
1265
1266 return OPT_ERR_INTEGER_VALUE_OUT_OF_BOUND;
1267 }
1268
1269 static bool
1270 set_color(int *color, const char *name)
1271 {
1272 if (map_enum(color, color_map, name))
1273 return TRUE;
1274 if (!prefixcmp(name, "color"))
1275 return parse_int(color, name + 5, 0, 255) == OPT_OK;
1276 return FALSE;
1277 }
1278
1279 /* Wants: object fgcolor bgcolor [attribute] */
1280 static enum option_code
1281 option_color_command(int argc, const char *argv[])
1282 {
1283 struct line_info *info;
1284
1285 if (argc < 3)
1286 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1287
1288 if (*argv[0] == '"' || *argv[0] == '\'') {
1289 info = add_custom_color(argv[0]);
1290 } else {
1291 info = get_line_info(argv[0]);
1292 }
1293 if (!info) {
1294 static const struct enum_map obsolete[] = {
1295 ENUM_MAP("main-delim", LINE_DELIMITER),
1296 ENUM_MAP("main-date", LINE_DATE),
1297 ENUM_MAP("main-author", LINE_AUTHOR),
1298 };
1299 int index;
1300
1301 if (!map_enum(&index, obsolete, argv[0]))
1302 return OPT_ERR_UNKNOWN_COLOR_NAME;
1303 info = &line_info[index];
1304 }
1305
1306 if (!set_color(&info->fg, argv[1]) ||
1307 !set_color(&info->bg, argv[2]))
1308 return OPT_ERR_UNKNOWN_COLOR;
1309
1310 info->attr = 0;
1311 while (argc-- > 3) {
1312 int attr;
1313
1314 if (!set_attribute(&attr, argv[argc]))
1315 return OPT_ERR_UNKNOWN_ATTRIBUTE;
1316 info->attr |= attr;
1317 }
1318
1319 return OPT_OK;
1320 }
1321
1322 static enum option_code
1323 parse_bool_matched(bool *opt, const char *arg, bool *matched)
1324 {
1325 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1326 ? TRUE : FALSE;
1327 if (matched)
1328 *matched = *opt || (!strcmp(arg, "0") || !strcmp(arg, "false") || !strcmp(arg, "no"));
1329 return OPT_OK;
1330 }
1331
1332 #define parse_bool(opt, arg) parse_bool_matched(opt, arg, NULL)
1333
1334 static enum option_code
1335 parse_enum_do(unsigned int *opt, const char *arg,
1336 const struct enum_map *map, size_t map_size)
1337 {
1338 bool is_true;
1339
1340 assert(map_size > 1);
1341
1342 if (map_enum_do(map, map_size, (int *) opt, arg))
1343 return OPT_OK;
1344
1345 parse_bool(&is_true, arg);
1346 *opt = is_true ? map[1].value : map[0].value;
1347 return OPT_OK;
1348 }
1349
1350 #define parse_enum(opt, arg, map) \
1351 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1352
1353 static enum option_code
1354 parse_string(char *opt, const char *arg, size_t optsize)
1355 {
1356 int arglen = strlen(arg);
1357
1358 switch (arg[0]) {
1359 case '\"':
1360 case '\'':
1361 if (arglen == 1 || arg[arglen - 1] != arg[0])
1362 return OPT_ERR_UNMATCHED_QUOTATION;
1363 arg += 1; arglen -= 2;
1364 default:
1365 string_ncopy_do(opt, optsize, arg, arglen);
1366 return OPT_OK;
1367 }
1368 }
1369
1370 static enum option_code
1371 parse_encoding(struct encoding **encoding_ref, const char *arg, bool priority)
1372 {
1373 char buf[SIZEOF_STR];
1374 enum option_code code = parse_string(buf, arg, sizeof(buf));
1375
1376 if (code == OPT_OK) {
1377 struct encoding *encoding = *encoding_ref;
1378
1379 if (encoding && !priority)
1380 return code;
1381 encoding = encoding_open(buf);
1382 if (encoding)
1383 *encoding_ref = encoding;
1384 }
1385
1386 return code;
1387 }
1388
1389 static enum option_code
1390 parse_args(const char ***args, const char *argv[])
1391 {
1392 if (*args == NULL && !argv_copy(args, argv))
1393 return OPT_ERR_OUT_OF_MEMORY;
1394 return OPT_OK;
1395 }
1396
1397 /* Wants: name = value */
1398 static enum option_code
1399 option_set_command(int argc, const char *argv[])
1400 {
1401 if (argc < 3)
1402 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1403
1404 if (strcmp(argv[1], "="))
1405 return OPT_ERR_NO_VALUE_ASSIGNED;
1406
1407 if (!strcmp(argv[0], "blame-options"))
1408 return parse_args(&opt_blame_argv, argv + 2);
1409
1410 if (argc != 3)
1411 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1412
1413 if (!strcmp(argv[0], "show-author"))
1414 return parse_enum(&opt_author, argv[2], author_map);
1415
1416 if (!strcmp(argv[0], "show-date"))
1417 return parse_enum(&opt_date, argv[2], date_map);
1418
1419 if (!strcmp(argv[0], "show-rev-graph"))
1420 return parse_bool(&opt_rev_graph, argv[2]);
1421
1422 if (!strcmp(argv[0], "show-refs"))
1423 return parse_bool(&opt_show_refs, argv[2]);
1424
1425 if (!strcmp(argv[0], "show-changes"))
1426 return parse_bool(&opt_show_changes, argv[2]);
1427
1428 if (!strcmp(argv[0], "show-notes")) {
1429 bool matched = FALSE;
1430 enum option_code res = parse_bool_matched(&opt_notes, argv[2], &matched);
1431
1432 if (res == OPT_OK && matched) {
1433 update_notes_arg();
1434 return res;
1435 }
1436
1437 opt_notes = TRUE;
1438 strcpy(opt_notes_arg, "--show-notes=");
1439 res = parse_string(opt_notes_arg + 8, argv[2],
1440 sizeof(opt_notes_arg) - 8);
1441 if (res == OPT_OK && opt_notes_arg[8] == '\0')
1442 opt_notes_arg[7] = '\0';
1443 return res;
1444 }
1445
1446 if (!strcmp(argv[0], "show-line-numbers"))
1447 return parse_bool(&opt_line_number, argv[2]);
1448
1449 if (!strcmp(argv[0], "line-graphics"))
1450 return parse_enum(&opt_line_graphics, argv[2], graphic_map);
1451
1452 if (!strcmp(argv[0], "line-number-interval"))
1453 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1454
1455 if (!strcmp(argv[0], "author-width"))
1456 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1457
1458 if (!strcmp(argv[0], "filename-width"))
1459 return parse_int(&opt_filename_cols, argv[2], 0, 1024);
1460
1461 if (!strcmp(argv[0], "show-filename"))
1462 return parse_enum(&opt_filename, argv[2], filename_map);
1463
1464 if (!strcmp(argv[0], "horizontal-scroll"))
1465 return parse_step(&opt_hscroll, argv[2]);
1466
1467 if (!strcmp(argv[0], "split-view-height"))
1468 return parse_step(&opt_scale_split_view, argv[2]);
1469
1470 if (!strcmp(argv[0], "tab-size"))
1471 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1472
1473 if (!strcmp(argv[0], "diff-context")) {
1474 enum option_code code = parse_int(&opt_diff_context, argv[2], 1, 999999);
1475
1476 if (code == OPT_OK)
1477 update_diff_context_arg(opt_diff_context);
1478 return code;
1479 }
1480
1481 if (!strcmp(argv[0], "ignore-space")) {
1482 enum option_code code = parse_enum(&opt_ignore_space, argv[2], ignore_space_map);
1483
1484 if (code == OPT_OK)
1485 update_ignore_space_arg();
1486 return code;
1487 }
1488
1489 if (!strcmp(argv[0], "commit-order")) {
1490 enum option_code code = parse_enum(&opt_commit_order, argv[2], commit_order_map);
1491
1492 if (code == OPT_OK)
1493 update_commit_order_arg();
1494 return code;
1495 }
1496
1497 if (!strcmp(argv[0], "status-untracked-dirs"))
1498 return parse_bool(&opt_untracked_dirs_content, argv[2]);
1499
1500 if (!strcmp(argv[0], "use-git-colors"))
1501 return parse_bool(&opt_read_git_colors, argv[2]);
1502
1503 return OPT_ERR_UNKNOWN_VARIABLE_NAME;
1504 }
1505
1506 /* Wants: mode request key */
1507 static enum option_code
1508 option_bind_command(int argc, const char *argv[])
1509 {
1510 enum request request;
1511 int keymap = -1;
1512 int key;
1513
1514 if (argc < 3)
1515 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1516
1517 if (!set_keymap(&keymap, argv[0]))
1518 return OPT_ERR_UNKNOWN_KEY_MAP;
1519
1520 key = get_key_value(argv[1]);
1521 if (key == ERR)
1522 return OPT_ERR_UNKNOWN_KEY;
1523
1524 request = get_request(argv[2]);
1525 if (request == REQ_UNKNOWN) {
1526 static const struct enum_map obsolete[] = {
1527 ENUM_MAP("cherry-pick", REQ_NONE),
1528 ENUM_MAP("screen-resize", REQ_NONE),
1529 ENUM_MAP("tree-parent", REQ_PARENT),
1530 };
1531 int alias;
1532
1533 if (map_enum(&alias, obsolete, argv[2])) {
1534 if (alias != REQ_NONE)
1535 add_keybinding(keymap, alias, key);
1536 return OPT_ERR_OBSOLETE_REQUEST_NAME;
1537 }
1538 }
1539 if (request == REQ_UNKNOWN && *argv[2]++ == '!') {
1540 bool silent = *argv[2] == '@';
1541
1542 if (silent)
1543 argv[2]++;
1544 return add_run_request(keymap, key, argv + 2, silent, TRUE)
1545 ? OPT_OK : OPT_ERR_OUT_OF_MEMORY;
1546 }
1547 if (request == REQ_UNKNOWN)
1548 return OPT_ERR_UNKNOWN_REQUEST_NAME;
1549
1550 add_keybinding(keymap, request, key);
1551
1552 return OPT_OK;
1553 }
1554
1555
1556 static enum option_code load_option_file(const char *path);
1557
1558 static enum option_code
1559 option_source_command(int argc, const char *argv[])
1560 {
1561 if (argc < 1)
1562 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1563
1564 return load_option_file(argv[0]);
1565 }
1566
1567 static enum option_code
1568 set_option(const char *opt, char *value)
1569 {
1570 const char *argv[SIZEOF_ARG];
1571 int argc = 0;
1572
1573 if (!argv_from_string(argv, &argc, value))
1574 return OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
1575
1576 if (!strcmp(opt, "color"))
1577 return option_color_command(argc, argv);
1578
1579 if (!strcmp(opt, "set"))
1580 return option_set_command(argc, argv);
1581
1582 if (!strcmp(opt, "bind"))
1583 return option_bind_command(argc, argv);
1584
1585 if (!strcmp(opt, "source"))
1586 return option_source_command(argc, argv);
1587
1588 return OPT_ERR_UNKNOWN_OPTION_COMMAND;
1589 }
1590
1591 struct config_state {
1592 const char *path;
1593 int lineno;
1594 bool errors;
1595 };
1596
1597 static int
1598 read_option(char *opt, size_t optlen, char *value, size_t valuelen, void *data)
1599 {
1600 struct config_state *config = data;
1601 enum option_code status = OPT_ERR_NO_OPTION_VALUE;
1602
1603 config->lineno++;
1604
1605 /* Check for comment markers, since read_properties() will
1606 * only ensure opt and value are split at first " \t". */
1607 optlen = strcspn(opt, "#");
1608 if (optlen == 0)
1609 return OK;
1610
1611 if (opt[optlen] == 0) {
1612 /* Look for comment endings in the value. */
1613 size_t len = strcspn(value, "#");
1614
1615 if (len < valuelen) {
1616 valuelen = len;
1617 value[valuelen] = 0;
1618 }
1619
1620 status = set_option(opt, value);
1621 }
1622
1623 if (status != OPT_OK) {
1624 warn("%s line %d: %s near '%.*s'", config->path, config->lineno,
1625 option_errors[status], (int) optlen, opt);
1626 config->errors = TRUE;
1627 }
1628
1629 /* Always keep going if errors are encountered. */
1630 return OK;
1631 }
1632
1633 static enum option_code
1634 load_option_file(const char *path)
1635 {
1636 struct config_state config = { path, 0, FALSE };
1637 struct io io;
1638
1639 /* Do not read configuration from stdin if set to "" */
1640 if (!path || !strlen(path))
1641 return OPT_OK;
1642
1643 /* It's OK that the file doesn't exist. */
1644 if (!io_open(&io, "%s", path))
1645 return OPT_ERR_FILE_DOES_NOT_EXIST;
1646
1647 if (io_load(&io, " \t", read_option, &config) == ERR ||
1648 config.errors == TRUE)
1649 warn("Errors while loading %s.", path);
1650 return OPT_OK;
1651 }
1652
1653 static int
1654 load_options(void)
1655 {
1656 const char *home = getenv("HOME");
1657 const char *tigrc_user = getenv("TIGRC_USER");
1658 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1659 const char *tig_diff_opts = getenv("TIG_DIFF_OPTS");
1660 char buf[SIZEOF_STR];
1661
1662 if (!tigrc_system)
1663 tigrc_system = SYSCONFDIR "/tigrc";
1664 load_option_file(tigrc_system);
1665
1666 if (!tigrc_user) {
1667 if (!home || !string_format(buf, "%s/.tigrc", home))
1668 return ERR;
1669 tigrc_user = buf;
1670 }
1671 load_option_file(tigrc_user);
1672
1673 /* Add _after_ loading config files to avoid adding run requests
1674 * that conflict with keybindings. */
1675 add_builtin_run_requests();
1676
1677 if (!opt_diff_argv && tig_diff_opts && *tig_diff_opts) {
1678 static const char *diff_opts[SIZEOF_ARG] = { NULL };
1679 int argc = 0;
1680
1681 if (!string_format(buf, "%s", tig_diff_opts) ||
1682 !argv_from_string(diff_opts, &argc, buf))
1683 die("TIG_DIFF_OPTS contains too many arguments");
1684 else if (!argv_copy(&opt_diff_argv, diff_opts))
1685 die("Failed to format TIG_DIFF_OPTS arguments");
1686 }
1687
1688 return OK;
1689 }
1690
1691
1692 /*
1693 * The viewer
1694 */
1695
1696 struct view;
1697 struct view_ops;
1698
1699 /* The display array of active views and the index of the current view. */
1700 static struct view *display[2];
1701 static WINDOW *display_win[2];
1702 static WINDOW *display_title[2];
1703 static unsigned int current_view;
1704
1705 #define foreach_displayed_view(view, i) \
1706 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1707
1708 #define displayed_views() (display[1] != NULL ? 2 : 1)
1709
1710 /* Current head and commit ID */
1711 static char ref_blob[SIZEOF_REF] = "";
1712 static char ref_commit[SIZEOF_REF] = "HEAD";
1713 static char ref_head[SIZEOF_REF] = "HEAD";
1714 static char ref_branch[SIZEOF_REF] = "";
1715
1716 enum view_flag {
1717 VIEW_NO_FLAGS = 0,
1718 VIEW_ALWAYS_LINENO = 1 << 0,
1719 VIEW_CUSTOM_STATUS = 1 << 1,
1720 VIEW_ADD_DESCRIBE_REF = 1 << 2,
1721 VIEW_ADD_PAGER_REFS = 1 << 3,
1722 VIEW_OPEN_DIFF = 1 << 4,
1723 VIEW_NO_REF = 1 << 5,
1724 VIEW_NO_GIT_DIR = 1 << 6,
1725 VIEW_DIFF_LIKE = 1 << 7,
1726 };
1727
1728 #define view_has_flags(view, flag) ((view)->ops->flags & (flag))
1729
1730 struct position {
1731 unsigned long offset; /* Offset of the window top */
1732 unsigned long col; /* Offset from the window side. */
1733 unsigned long lineno; /* Current line number */
1734 };
1735
1736 struct view {
1737 const char *name; /* View name */
1738 const char *id; /* Points to either of ref_{head,commit,blob} */
1739
1740 struct view_ops *ops; /* View operations */
1741
1742 enum keymap keymap; /* What keymap does this view have */
1743
1744 char ref[SIZEOF_REF]; /* Hovered commit reference */
1745 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1746
1747 int height, width; /* The width and height of the main window */
1748 WINDOW *win; /* The main window */
1749
1750 /* Navigation */
1751 struct position pos; /* Current position. */
1752 struct position prev_pos; /* Previous position. */
1753
1754 /* Searching */
1755 char grep[SIZEOF_STR]; /* Search string */
1756 regex_t *regex; /* Pre-compiled regexp */
1757
1758 /* If non-NULL, points to the view that opened this view. If this view
1759 * is closed tig will switch back to the parent view. */
1760 struct view *parent;
1761 struct view *prev;
1762
1763 /* Buffering */
1764 size_t lines; /* Total number of lines */
1765 struct line *line; /* Line index */
1766 unsigned int digits; /* Number of digits in the lines member. */
1767
1768 /* Drawing */
1769 struct line *curline; /* Line currently being drawn. */
1770 enum line_type curtype; /* Attribute currently used for drawing. */
1771 unsigned long col; /* Column when drawing. */
1772 bool has_scrolled; /* View was scrolled. */
1773
1774 /* Loading */
1775 const char **argv; /* Shell command arguments. */
1776 const char *dir; /* Directory from which to execute. */
1777 struct io io;
1778 struct io *pipe;
1779 time_t start_time;
1780 time_t update_secs;
1781 struct encoding *encoding;
1782
1783 /* Private data */
1784 void *private;
1785 };
1786
1787 enum open_flags {
1788 OPEN_DEFAULT = 0, /* Use default view switching. */
1789 OPEN_SPLIT = 1, /* Split current view. */
1790 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1791 OPEN_REFRESH = 16, /* Refresh view using previous command. */
1792 OPEN_PREPARED = 32, /* Open already prepared command. */
1793 OPEN_EXTRA = 64, /* Open extra data from command. */
1794 };
1795
1796 struct view_ops {
1797 /* What type of content being displayed. Used in the title bar. */
1798 const char *type;
1799 /* Flags to control the view behavior. */
1800 enum view_flag flags;
1801 /* Size of private data. */
1802 size_t private_size;
1803 /* Open and reads in all view content. */
1804 bool (*open)(struct view *view, enum open_flags flags);
1805 /* Read one line; updates view->line. */
1806 bool (*read)(struct view *view, char *data);
1807 /* Draw one line; @lineno must be < view->height. */
1808 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1809 /* Depending on view handle a special requests. */
1810 enum request (*request)(struct view *view, enum request request, struct line *line);
1811 /* Search for regexp in a line. */
1812 bool (*grep)(struct view *view, struct line *line);
1813 /* Select line */
1814 void (*select)(struct view *view, struct line *line);
1815 };
1816
1817 #define VIEW_OPS(id, name, ref) name##_ops
1818 static struct view_ops VIEW_INFO(VIEW_OPS);
1819
1820 static struct view views[] = {
1821 #define VIEW_DATA(id, name, ref) \
1822 { #name, ref, &name##_ops, KEYMAP_##id }
1823 VIEW_INFO(VIEW_DATA)
1824 };
1825
1826 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1827
1828 #define foreach_view(view, i) \
1829 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1830
1831 #define view_is_displayed(view) \
1832 (view == display[0] || view == display[1])
1833
1834 static enum request
1835 view_request(struct view *view, enum request request)
1836 {
1837 if (!view || !view->lines)
1838 return request;
1839 return view->ops->request(view, request, &view->line[view->pos.lineno]);
1840 }
1841
1842
1843 /*
1844 * View drawing.
1845 */
1846
1847 static inline void
1848 set_view_attr(struct view *view, enum line_type type)
1849 {
1850 if (!view->curline->selected && view->curtype != type) {
1851 (void) wattrset(view->win, get_line_attr(type));
1852 wchgat(view->win, -1, 0, get_line_color(type), NULL);
1853 view->curtype = type;
1854 }
1855 }
1856
1857 #define VIEW_MAX_LEN(view) ((view)->width + (view)->pos.col - (view)->col)
1858
1859 static bool
1860 draw_chars(struct view *view, enum line_type type, const char *string,
1861 int max_len, bool use_tilde)
1862 {
1863 static char out_buffer[BUFSIZ * 2];
1864 int len = 0;
1865 int col = 0;
1866 int trimmed = FALSE;
1867 size_t skip = view->pos.col > view->col ? view->pos.col - view->col : 0;
1868
1869 if (max_len <= 0)
1870 return VIEW_MAX_LEN(view) <= 0;
1871
1872 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1873
1874 set_view_attr(view, type);
1875 if (len > 0) {
1876 if (opt_iconv_out != ICONV_NONE) {
1877 size_t inlen = len + 1;
1878 char *instr = calloc(1, inlen);
1879 ICONV_CONST char *inbuf = (ICONV_CONST char *) instr;
1880 if (!instr)
1881 return VIEW_MAX_LEN(view) <= 0;
1882
1883 strncpy(instr, string, len);
1884
1885 char *outbuf = out_buffer;
1886 size_t outlen = sizeof(out_buffer);
1887
1888 size_t ret;
1889
1890 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1891 if (ret != (size_t) -1) {
1892 string = out_buffer;
1893 len = sizeof(out_buffer) - outlen;
1894 }
1895 free(instr);
1896 }
1897
1898 waddnstr(view->win, string, len);
1899
1900 if (trimmed && use_tilde) {
1901 set_view_attr(view, LINE_DELIMITER);
1902 waddch(view->win, '~');
1903 col++;
1904 }
1905 }
1906
1907 view->col += col;
1908 return VIEW_MAX_LEN(view) <= 0;
1909 }
1910
1911 static bool
1912 draw_space(struct view *view, enum line_type type, int max, int spaces)
1913 {
1914 static char space[] = " ";
1915
1916 spaces = MIN(max, spaces);
1917
1918 while (spaces > 0) {
1919 int len = MIN(spaces, sizeof(space) - 1);
1920
1921 if (draw_chars(view, type, space, len, FALSE))
1922 return TRUE;
1923 spaces -= len;
1924 }
1925
1926 return VIEW_MAX_LEN(view) <= 0;
1927 }
1928
1929 static bool
1930 draw_text(struct view *view, enum line_type type, const char *string)
1931 {
1932 char text[SIZEOF_STR];
1933
1934 do {
1935 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1936
1937 if (draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE))
1938 return TRUE;
1939 string += pos;
1940 } while (*string);
1941
1942 return VIEW_MAX_LEN(view) <= 0;
1943 }
1944
1945 static bool
1946 draw_formatted(struct view *view, enum line_type type, const char *format, ...)
1947 {
1948 char text[SIZEOF_STR];
1949 int retval;
1950
1951 FORMAT_BUFFER(text, sizeof(text), format, retval, TRUE);
1952 return retval >= 0 ? draw_text(view, type, text) : VIEW_MAX_LEN(view) <= 0;
1953 }
1954
1955 static bool
1956 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
1957 {
1958 size_t skip = view->pos.col > view->col ? view->pos.col - view->col : 0;
1959 int max = VIEW_MAX_LEN(view);
1960 int i;
1961
1962 if (max < size)
1963 size = max;
1964
1965 set_view_attr(view, type);
1966 /* Using waddch() instead of waddnstr() ensures that
1967 * they'll be rendered correctly for the cursor line. */
1968 for (i = skip; i < size; i++)
1969 waddch(view->win, graphic[i]);
1970
1971 view->col += size;
1972 if (separator) {
1973 if (size < max && skip <= size)
1974 waddch(view->win, ' ');
1975 view->col++;
1976 }
1977
1978 return VIEW_MAX_LEN(view) <= 0;
1979 }
1980
1981 static bool
1982 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1983 {
1984 int max = MIN(VIEW_MAX_LEN(view), len);
1985 int col = view->col;
1986
1987 if (!text)
1988 return draw_space(view, type, max, max);
1989
1990 return draw_chars(view, type, text, max - 1, trim)
1991 || draw_space(view, LINE_DEFAULT, max - (view->col - col), max);
1992 }
1993
1994 static bool
1995 draw_date(struct view *view, struct time *time)
1996 {
1997 const char *date = mkdate(time, opt_date);
1998 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
1999
2000 if (opt_date == DATE_NO)
2001 return FALSE;
2002
2003 return draw_field(view, LINE_DATE, date, cols, FALSE);
2004 }
2005
2006 static bool
2007 draw_author(struct view *view, const char *author)
2008 {
2009 bool trim = author_trim(opt_author_cols);
2010 const char *text = mkauthor(author, opt_author_cols, opt_author);
2011
2012 if (opt_author == AUTHOR_NO)
2013 return FALSE;
2014
2015 return draw_field(view, LINE_AUTHOR, text, opt_author_cols, trim);
2016 }
2017
2018 static bool
2019 draw_filename(struct view *view, const char *filename, bool auto_enabled)
2020 {
2021 bool trim = filename && strlen(filename) >= opt_filename_cols;
2022
2023 if (opt_filename == FILENAME_NO)
2024 return FALSE;
2025
2026 if (opt_filename == FILENAME_AUTO && !auto_enabled)
2027 return FALSE;
2028
2029 return draw_field(view, LINE_FILENAME, filename, opt_filename_cols, trim);
2030 }
2031
2032 static bool
2033 draw_mode(struct view *view, mode_t mode)
2034 {
2035 const char *str = mkmode(mode);
2036
2037 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
2038 }
2039
2040 static bool
2041 draw_lineno(struct view *view, unsigned int lineno)
2042 {
2043 char number[10];
2044 int digits3 = view->digits < 3 ? 3 : view->digits;
2045 int max = MIN(VIEW_MAX_LEN(view), digits3);
2046 char *text = NULL;
2047 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
2048
2049 if (!opt_line_number)
2050 return FALSE;
2051
2052 lineno += view->pos.offset + 1;
2053 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
2054 static char fmt[] = "%1ld";
2055
2056 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
2057 if (string_format(number, fmt, lineno))
2058 text = number;
2059 }
2060 if (text)
2061 draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
2062 else
2063 draw_space(view, LINE_LINE_NUMBER, max, digits3);
2064 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
2065 }
2066
2067 static bool
2068 draw_refs(struct view *view, struct ref_list *refs)
2069 {
2070 size_t i;
2071
2072 if (!opt_show_refs || !refs)
2073 return FALSE;
2074
2075 for (i = 0; i < refs->size; i++) {
2076 struct ref *ref = refs->refs[i];
2077 enum line_type type = get_line_type_from_ref(ref);
2078
2079 if (draw_formatted(view, type, "[%s]", ref->name))
2080 return TRUE;
2081
2082 if (draw_text(view, LINE_DEFAULT, " "))
2083 return TRUE;
2084 }
2085
2086 return FALSE;
2087 }
2088
2089 static bool
2090 draw_view_line(struct view *view, unsigned int lineno)
2091 {
2092 struct line *line;
2093 bool selected = (view->pos.offset + lineno == view->pos.lineno);
2094
2095 assert(view_is_displayed(view));
2096
2097 if (view->pos.offset + lineno >= view->lines)
2098 return FALSE;
2099
2100 line = &view->line[view->pos.offset + lineno];
2101
2102 wmove(view->win, lineno, 0);
2103 if (line->cleareol)
2104 wclrtoeol(view->win);
2105 view->col = 0;
2106 view->curline = line;
2107 view->curtype = LINE_NONE;
2108 line->selected = FALSE;
2109 line->dirty = line->cleareol = 0;
2110
2111 if (selected) {
2112 set_view_attr(view, LINE_CURSOR);
2113 line->selected = TRUE;
2114 view->ops->select(view, line);
2115 }
2116
2117 return view->ops->draw(view, line, lineno);
2118 }
2119
2120 static void
2121 redraw_view_dirty(struct view *view)
2122 {
2123 bool dirty = FALSE;
2124 int lineno;
2125
2126 for (lineno = 0; lineno < view->height; lineno++) {
2127 if (view->pos.offset + lineno >= view->lines)
2128 break;
2129 if (!view->line[view->pos.offset + lineno].dirty)
2130 continue;
2131 dirty = TRUE;
2132 if (!draw_view_line(view, lineno))
2133 break;
2134 }
2135
2136 if (!dirty)
2137 return;
2138 wnoutrefresh(view->win);
2139 }
2140
2141 static void
2142 redraw_view_from(struct view *view, int lineno)
2143 {
2144 assert(0 <= lineno && lineno < view->height);
2145
2146 for (; lineno < view->height; lineno++) {
2147 if (!draw_view_line(view, lineno))
2148 break;
2149 }
2150
2151 wnoutrefresh(view->win);
2152 }
2153
2154 static void
2155 redraw_view(struct view *view)
2156 {
2157 werase(view->win);
2158 redraw_view_from(view, 0);
2159 }
2160
2161
2162 static void
2163 update_view_title(struct view *view)
2164 {
2165 char buf[SIZEOF_STR];
2166 char state[SIZEOF_STR];
2167 size_t bufpos = 0, statelen = 0;
2168 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
2169
2170 assert(view_is_displayed(view));
2171
2172 if (!view_has_flags(view, VIEW_CUSTOM_STATUS) && view->lines) {
2173 unsigned int view_lines = view->pos.offset + view->height;
2174 unsigned int lines = view->lines
2175 ? MIN(view_lines, view->lines) * 100 / view->lines
2176 : 0;
2177
2178 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
2179 view->ops->type,
2180 view->pos.lineno + 1,
2181 view->lines,
2182 lines);
2183
2184 }
2185
2186 if (view->pipe) {
2187 time_t secs = time(NULL) - view->start_time;
2188
2189 /* Three git seconds are a long time ... */
2190 if (secs > 2)
2191 string_format_from(state, &statelen, " loading %lds", secs);
2192 }
2193
2194 string_format_from(buf, &bufpos, "[%s]", view->name);
2195 if (*view->ref && bufpos < view->width) {
2196 size_t refsize = strlen(view->ref);
2197 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2198
2199 if (minsize < view->width)
2200 refsize = view->width - minsize + 7;
2201 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2202 }
2203
2204 if (statelen && bufpos < view->width) {
2205 string_format_from(buf, &bufpos, "%s", state);
2206 }
2207
2208 if (view == display[current_view])
2209 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
2210 else
2211 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
2212
2213 mvwaddnstr(window, 0, 0, buf, bufpos);
2214 wclrtoeol(window);
2215 wnoutrefresh(window);
2216 }
2217
2218 static int
2219 apply_step(double step, int value)
2220 {
2221 if (step >= 1)
2222 return (int) step;
2223 value *= step + 0.01;
2224 return value ? value : 1;
2225 }
2226
2227 static void
2228 resize_display(void)
2229 {
2230 int offset, i;
2231 struct view *base = display[0];
2232 struct view *view = display[1] ? display[1] : display[0];
2233
2234 /* Setup window dimensions */
2235
2236 getmaxyx(stdscr, base->height, base->width);
2237
2238 /* Make room for the status window. */
2239 base->height -= 1;
2240
2241 if (view != base) {
2242 /* Horizontal split. */
2243 view->width = base->width;
2244 view->height = apply_step(opt_scale_split_view, base->height);
2245 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
2246 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
2247 base->height -= view->height;
2248
2249 /* Make room for the title bar. */
2250 view->height -= 1;
2251 }
2252
2253 /* Make room for the title bar. */
2254 base->height -= 1;
2255
2256 offset = 0;
2257
2258 foreach_displayed_view (view, i) {
2259 if (!display_win[i]) {
2260 display_win[i] = newwin(view->height, view->width, offset, 0);
2261 if (!display_win[i])
2262 die("Failed to create %s view", view->name);
2263
2264 scrollok(display_win[i], FALSE);
2265
2266 display_title[i] = newwin(1, view->width, offset + view->height, 0);
2267 if (!display_title[i])
2268 die("Failed to create title window");
2269
2270 } else {
2271 wresize(display_win[i], view->height, view->width);
2272 mvwin(display_win[i], offset, 0);
2273 mvwin(display_title[i], offset + view->height, 0);
2274 }
2275
2276 view->win = display_win[i];
2277
2278 offset += view->height + 1;
2279 }
2280 }
2281
2282 static void
2283 redraw_display(bool clear)
2284 {
2285 struct view *view;
2286 int i;
2287
2288 foreach_displayed_view (view, i) {
2289 if (clear)
2290 wclear(view->win);
2291 redraw_view(view);
2292 update_view_title(view);
2293 }
2294 }
2295
2296
2297 /*
2298 * Option management
2299 */
2300
2301 #define TOGGLE_MENU \
2302 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
2303 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
2304 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
2305 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
2306 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
2307 TOGGLE_(FILENAME, '#', "file names", &opt_filename, filename_map) \
2308 TOGGLE_(IGNORE_SPACE, 'W', "space changes", &opt_ignore_space, ignore_space_map) \
2309 TOGGLE_(COMMIT_ORDER, 'l', "commit order", &opt_commit_order, commit_order_map) \
2310 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL) \
2311 TOGGLE_(CHANGES, 'C', "local change display", &opt_show_changes, NULL)
2312
2313 static bool
2314 toggle_option(enum request request)
2315 {
2316 const struct {
2317 enum request request;
2318 const struct enum_map *map;
2319 size_t map_size;
2320 } data[] = {
2321 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
2322 TOGGLE_MENU
2323 #undef TOGGLE_
2324 };
2325 const struct menu_item menu[] = {
2326 #define TOGGLE_(id, key, help, value, map) { key, help, value },
2327 TOGGLE_MENU
2328 #undef TOGGLE_
2329 { 0 }
2330 };
2331 int i = 0;
2332
2333 if (request == REQ_OPTIONS) {
2334 if (!prompt_menu("Toggle option", menu, &i))
2335 return FALSE;
2336 } else {
2337 while (i < ARRAY_SIZE(data) && data[i].request != request)
2338 i++;
2339 if (i >= ARRAY_SIZE(data))
2340 die("Invalid request (%d)", request);
2341 }
2342
2343 if (data[i].map != NULL) {
2344 unsigned int *opt = menu[i].data;
2345
2346 *opt = (*opt + 1) % data[i].map_size;
2347 if (data[i].map == ignore_space_map) {
2348 update_ignore_space_arg();
2349 report("Ignoring %s %s", enum_name(data[i].map[*opt]), menu[i].text);
2350 return TRUE;
2351
2352 } else if (data[i].map == commit_order_map) {
2353 update_commit_order_arg();
2354 report("Using %s %s", enum_name(data[i].map[*opt]), menu[i].text);
2355 return TRUE;
2356 }
2357
2358 redraw_display(FALSE);
2359 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
2360
2361 } else {
2362 bool *option = menu[i].data;
2363
2364 *option = !*option;
2365 redraw_display(FALSE);
2366 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
2367 }
2368
2369 return FALSE;
2370 }
2371
2372 static void
2373 maximize_view(struct view *view, bool redraw)
2374 {
2375 memset(display, 0, sizeof(display));
2376 current_view = 0;
2377 display[current_view] = view;
2378 resize_display();
2379 if (redraw) {
2380 redraw_display(FALSE);
2381 report("");
2382 }
2383 }
2384
2385
2386 /*
2387 * Navigation
2388 */
2389
2390 static bool
2391 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2392 {
2393 if (lineno >= view->lines)
2394 lineno = view->lines > 0 ? view->lines - 1 : 0;
2395
2396 if (offset > lineno || offset + view->height <= lineno) {
2397 unsigned long half = view->height / 2;
2398
2399 if (lineno > half)
2400 offset = lineno - half;
2401 else
2402 offset = 0;
2403 }
2404
2405 if (offset != view->pos.offset || lineno != view->pos.lineno) {
2406 view->pos.offset = offset;
2407 view->pos.lineno = lineno;
2408 return TRUE;
2409 }
2410
2411 return FALSE;
2412 }
2413
2414 /* Scrolling backend */
2415 static void
2416 do_scroll_view(struct view *view, int lines)
2417 {
2418 bool redraw_current_line = FALSE;
2419
2420 /* The rendering expects the new offset. */
2421 view->pos.offset += lines;
2422
2423 assert(0 <= view->pos.offset && view->pos.offset < view->lines);
2424 assert(lines);
2425
2426 /* Move current line into the view. */
2427 if (view->pos.lineno < view->pos.offset) {
2428 view->pos.lineno = view->pos.offset;
2429 redraw_current_line = TRUE;
2430 } else if (view->pos.lineno >= view->pos.offset + view->height) {
2431 view->pos.lineno = view->pos.offset + view->height - 1;
2432 redraw_current_line = TRUE;
2433 }
2434
2435 assert(view->pos.offset <= view->pos.lineno && view->pos.lineno < view->lines);
2436
2437 /* Redraw the whole screen if scrolling is pointless. */
2438 if (view->height < ABS(lines)) {
2439 redraw_view(view);
2440
2441 } else {
2442 int line = lines > 0 ? view->height - lines : 0;
2443 int end = line + ABS(lines);
2444
2445 scrollok(view->win, TRUE);
2446 wscrl(view->win, lines);
2447 scrollok(view->win, FALSE);
2448
2449 while (line < end && draw_view_line(view, line))
2450 line++;
2451
2452 if (redraw_current_line)
2453 draw_view_line(view, view->pos.lineno - view->pos.offset);
2454 wnoutrefresh(view->win);
2455 }
2456
2457 view->has_scrolled = TRUE;
2458 report("");
2459 }
2460
2461 /* Scroll frontend */
2462 static void
2463 scroll_view(struct view *view, enum request request)
2464 {
2465 int lines = 1;
2466
2467 assert(view_is_displayed(view));
2468
2469 switch (request) {
2470 case REQ_SCROLL_FIRST_COL:
2471 view->pos.col = 0;
2472 redraw_view_from(view, 0);
2473 report("");
2474 return;
2475 case REQ_SCROLL_LEFT:
2476 if (view->pos.col == 0) {
2477 report("Cannot scroll beyond the first column");
2478 return;
2479 }
2480 if (view->pos.col <= apply_step(opt_hscroll, view->width))
2481 view->pos.col = 0;
2482 else
2483 view->pos.col -= apply_step(opt_hscroll, view->width);
2484 redraw_view_from(view, 0);
2485 report("");
2486 return;
2487 case REQ_SCROLL_RIGHT:
2488 view->pos.col += apply_step(opt_hscroll, view->width);
2489 redraw_view(view);
2490 report("");
2491 return;
2492 case REQ_SCROLL_PAGE_DOWN:
2493 lines = view->height;
2494 case REQ_SCROLL_LINE_DOWN:
2495 if (view->pos.offset + lines > view->lines)
2496 lines = view->lines - view->pos.offset;
2497
2498 if (lines == 0 || view->pos.offset + view->height >= view->lines) {
2499 report("Cannot scroll beyond the last line");
2500 return;
2501 }
2502 break;
2503
2504 case REQ_SCROLL_PAGE_UP:
2505 lines = view->height;
2506 case REQ_SCROLL_LINE_UP:
2507 if (lines > view->pos.offset)
2508 lines = view->pos.offset;
2509
2510 if (lines == 0) {
2511 report("Cannot scroll beyond the first line");
2512 return;
2513 }
2514
2515 lines = -lines;
2516 break;
2517
2518 default:
2519 die("request %d not handled in switch", request);
2520 }
2521
2522 do_scroll_view(view, lines);
2523 }
2524
2525 /* Cursor moving */
2526 static void
2527 move_view(struct view *view, enum request request)
2528 {
2529 int scroll_steps = 0;
2530 int steps;
2531
2532 switch (request) {
2533 case REQ_MOVE_FIRST_LINE:
2534 steps = -view->pos.lineno;
2535 break;
2536
2537 case REQ_MOVE_LAST_LINE:
2538 steps = view->lines - view->pos.lineno - 1;
2539 break;
2540
2541 case REQ_MOVE_PAGE_UP:
2542 steps = view->height > view->pos.lineno
2543 ? -view->pos.lineno : -view->height;
2544 break;
2545
2546 case REQ_MOVE_PAGE_DOWN:
2547 steps = view->pos.lineno + view->height >= view->lines
2548 ? view->lines - view->pos.lineno - 1 : view->height;
2549 break;
2550
2551 case REQ_MOVE_UP:
2552 case REQ_PREVIOUS:
2553 steps = -1;
2554 break;
2555
2556 case REQ_MOVE_DOWN:
2557 case REQ_NEXT:
2558 steps = 1;
2559 break;
2560
2561 default:
2562 die("request %d not handled in switch", request);
2563 }
2564
2565 if (steps <= 0 && view->pos.lineno == 0) {
2566 report("Cannot move beyond the first line");
2567 return;
2568
2569 } else if (steps >= 0 && view->pos.lineno + 1 >= view->lines) {
2570 report("Cannot move beyond the last line");
2571 return;
2572 }
2573
2574 /* Move the current line */
2575 view->pos.lineno += steps;
2576 assert(0 <= view->pos.lineno && view->pos.lineno < view->lines);
2577
2578 /* Check whether the view needs to be scrolled */
2579 if (view->pos.lineno < view->pos.offset ||
2580 view->pos.lineno >= view->pos.offset + view->height) {
2581 scroll_steps = steps;
2582 if (steps < 0 && -steps > view->pos.offset) {
2583 scroll_steps = -view->pos.offset;
2584
2585 } else if (steps > 0) {
2586 if (view->pos.lineno == view->lines - 1 &&
2587 view->lines > view->height) {
2588 scroll_steps = view->lines - view->pos.offset - 1;
2589 if (scroll_steps >= view->height)
2590 scroll_steps -= view->height - 1;
2591 }
2592 }
2593 }
2594
2595 if (!view_is_displayed(view)) {
2596 view->pos.offset += scroll_steps;
2597 assert(0 <= view->pos.offset && view->pos.offset < view->lines);
2598 view->ops->select(view, &view->line[view->pos.lineno]);
2599 return;
2600 }
2601
2602 /* Repaint the old "current" line if we be scrolling */
2603 if (ABS(steps) < view->height)
2604 draw_view_line(view, view->pos.lineno - steps - view->pos.offset);
2605
2606 if (scroll_steps) {
2607 do_scroll_view(view, scroll_steps);
2608 return;
2609 }
2610
2611 /* Draw the current line */
2612 draw_view_line(view, view->pos.lineno - view->pos.offset);
2613
2614 wnoutrefresh(view->win);
2615 report("");
2616 }
2617
2618
2619 /*
2620 * Searching
2621 */
2622
2623 static void search_view(struct view *view, enum request request);
2624
2625 static bool
2626 grep_text(struct view *view, const char *text[])
2627 {
2628 regmatch_t pmatch;
2629 size_t i;
2630
2631 for (i = 0; text[i]; i++)
2632 if (*text[i] &&
2633 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2634 return TRUE;
2635 return FALSE;
2636 }
2637
2638 static void
2639 select_view_line(struct view *view, unsigned long lineno)
2640 {
2641 struct position old = view->pos;
2642
2643 if (goto_view_line(view, view->pos.offset, lineno)) {
2644 if (view_is_displayed(view)) {
2645 if (old.offset != view->pos.offset) {
2646 redraw_view(view);
2647 } else {
2648 draw_view_line(view, old.lineno - view->pos.offset);
2649 draw_view_line(view, view->pos.lineno - view->pos.offset);
2650 wnoutrefresh(view->win);
2651 }
2652 } else {
2653 view->ops->select(view, &view->line[view->pos.lineno]);
2654 }
2655 }
2656 }
2657
2658 static void
2659 find_next(struct view *view, enum request request)
2660 {
2661 unsigned long lineno = view->pos.lineno;
2662 int direction;
2663
2664 if (!*view->grep) {
2665 if (!*opt_search)
2666 report("No previous search");
2667 else
2668 search_view(view, request);
2669 return;
2670 }
2671
2672 switch (request) {
2673 case REQ_SEARCH:
2674 case REQ_FIND_NEXT:
2675 direction = 1;
2676 break;
2677
2678 case REQ_SEARCH_BACK:
2679 case REQ_FIND_PREV:
2680 direction = -1;
2681 break;
2682
2683 default:
2684 return;
2685 }
2686
2687 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2688 lineno += direction;
2689
2690 /* Note, lineno is unsigned long so will wrap around in which case it
2691 * will become bigger than view->lines. */
2692 for (; lineno < view->lines; lineno += direction) {
2693 if (view->ops->grep(view, &view->line[lineno])) {
2694 select_view_line(view, lineno);
2695 report("Line %ld matches '%s'", lineno + 1, view->grep);
2696 return;
2697 }
2698 }
2699
2700 report("No match found for '%s'", view->grep);
2701 }
2702
2703 static void
2704 search_view(struct view *view, enum request request)
2705 {
2706 int regex_err;
2707
2708 if (view->regex) {
2709 regfree(view->regex);
2710 *view->grep = 0;
2711 } else {
2712 view->regex = calloc(1, sizeof(*view->regex));
2713 if (!view->regex)
2714 return;
2715 }
2716
2717 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2718 if (regex_err != 0) {
2719 char buf[SIZEOF_STR] = "unknown error";
2720
2721 regerror(regex_err, view->regex, buf, sizeof(buf));
2722 report("Search failed: %s", buf);
2723 return;
2724 }
2725
2726 string_copy(view->grep, opt_search);
2727
2728 find_next(view, request);
2729 }
2730
2731 /*
2732 * Incremental updating
2733 */
2734
2735 static inline bool
2736 check_position(struct position *pos)
2737 {
2738 return pos->lineno || pos->col || pos->offset;
2739 }
2740
2741 static inline void
2742 clear_position(struct position *pos)
2743 {
2744 memset(pos, 0, sizeof(*pos));
2745 }
2746
2747 static void
2748 reset_view(struct view *view)
2749 {
2750 int i;
2751
2752 for (i = 0; i < view->lines; i++)
2753 if (!view->line[i].dont_free)
2754 free(view->line[i].data);
2755 free(view->line);
2756
2757 view->prev_pos = view->pos;
2758 clear_position(&view->pos);
2759
2760 view->line = NULL;
2761 view->lines = 0;
2762 view->vid[0] = 0;
2763 view->update_secs = 0;
2764 }
2765
2766 static const char *
2767 format_arg(const char *name)
2768 {
2769 static struct {
2770 const char *name;
2771 size_t namelen;
2772 const char *value;
2773 const char *value_if_empty;
2774 } vars[] = {
2775 #define FORMAT_VAR(name, value, value_if_empty) \
2776 { name, STRING_SIZE(name), value, value_if_empty }
2777 FORMAT_VAR("%(directory)", opt_path, "."),
2778 FORMAT_VAR("%(file)", opt_file, ""),
2779 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2780 FORMAT_VAR("%(head)", ref_head, ""),
2781 FORMAT_VAR("%(commit)", ref_commit, ""),
2782 FORMAT_VAR("%(blob)", ref_blob, ""),
2783 FORMAT_VAR("%(branch)", ref_branch, ""),
2784 };
2785 int i;
2786
2787 if (!prefixcmp(name, "%(prompt"))
2788 return read_prompt("Command argument: ");
2789
2790 for (i = 0; i < ARRAY_SIZE(vars); i++)
2791 if (!strncmp(name, vars[i].name, vars[i].namelen))
2792 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2793
2794 report("Unknown replacement: `%s`", name);
2795 return NULL;
2796 }
2797
2798 static bool
2799 format_argv(const char ***dst_argv, const char *src_argv[], bool first)
2800 {
2801 char buf[SIZEOF_STR];
2802 int argc;
2803
2804 argv_free(*dst_argv);
2805
2806 for (argc = 0; src_argv[argc]; argc++) {
2807 const char *arg = src_argv[argc];
2808 size_t bufpos = 0;
2809
2810 if (!strcmp(arg, "%(fileargs)")) {
2811 if (!argv_append_array(dst_argv, opt_file_argv))
2812 break;
2813 continue;
2814
2815 } else if (!strcmp(arg, "%(diffargs)")) {
2816 if (!argv_append_array(dst_argv, opt_diff_argv))
2817 break;
2818 continue;
2819
2820 } else if (!strcmp(arg, "%(blameargs)")) {
2821 if (!argv_append_array(dst_argv, opt_blame_argv))
2822 break;
2823 continue;
2824
2825 } else if (!strcmp(arg, "%(revargs)") ||
2826 (first && !strcmp(arg, "%(commit)"))) {
2827 if (!argv_append_array(dst_argv, opt_rev_argv))
2828 break;
2829 continue;
2830 }
2831
2832 while (arg) {
2833 char *next = strstr(arg, "%(");
2834 int len = next - arg;
2835 const char *value;
2836
2837 if (!next) {
2838 len = strlen(arg);
2839 value = "";
2840
2841 } else {
2842 value = format_arg(next);
2843
2844 if (!value) {
2845 return FALSE;
2846 }
2847 }
2848
2849 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2850 return FALSE;
2851
2852 arg = next ? strchr(next, ')') + 1 : NULL;
2853 }
2854
2855 if (!argv_append(dst_argv, buf))
2856 break;
2857 }
2858
2859 return src_argv[argc] == NULL;
2860 }
2861
2862 static bool
2863 restore_view_position(struct view *view)
2864 {
2865 /* A view without a previous view is the first view */
2866 if (!view->prev && opt_lineno && opt_lineno <= view->lines) {
2867 select_view_line(view, opt_lineno - 1);
2868 opt_lineno = 0;
2869 }
2870
2871 /* Ensure that the view position is in a valid state. */
2872 if (!check_position(&view->prev_pos) ||
2873 (view->pipe && view->lines <= view->prev_pos.lineno))
2874 return goto_view_line(view, view->pos.offset, view->pos.lineno);
2875
2876 /* Changing the view position cancels the restoring. */
2877 /* FIXME: Changing back to the first line is not detected. */
2878 if (check_position(&view->pos)) {
2879 clear_position(&view->prev_pos);
2880 return FALSE;
2881 }
2882
2883 if (goto_view_line(view, view->prev_pos.offset, view->prev_pos.lineno) &&
2884 view_is_displayed(view))
2885 werase(view->win);
2886
2887 view->pos.col = view->prev_pos.col;
2888 clear_position(&view->prev_pos);
2889
2890 return TRUE;
2891 }
2892
2893 static void
2894 end_update(struct view *view, bool force)
2895 {
2896 if (!view->pipe)
2897 return;
2898 while (!view->ops->read(view, NULL))
2899 if (!force)
2900 return;
2901 if (force)
2902 io_kill(view->pipe);
2903 io_done(view->pipe);
2904 view->pipe = NULL;
2905 }
2906
2907 static void
2908 setup_update(struct view *view, const char *vid)
2909 {
2910 reset_view(view);
2911 string_copy_rev(view->vid, vid);
2912 view->pipe = &view->io;
2913 view->start_time = time(NULL);
2914 }
2915
2916 static bool
2917 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
2918 {
2919 bool extra = !!(flags & (OPEN_EXTRA));
2920 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED | OPEN_EXTRA));
2921 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2922
2923 if (!reload && !strcmp(view->vid, view->id))
2924 return TRUE;
2925
2926 if (view->pipe) {
2927 if (extra)
2928 io_done(view->pipe);
2929 else
2930 end_update(view, TRUE);
2931 }
2932
2933 if (!refresh && argv) {
2934 view->dir = dir;
2935 if (!format_argv(&view->argv, argv, !view->prev))
2936 return FALSE;
2937
2938 /* Put the current ref_* value to the view title ref
2939 * member. This is needed by the blob view. Most other
2940 * views sets it automatically after loading because the
2941 * first line is a commit line. */
2942 string_copy_rev(view->ref, view->id);
2943 }
2944
2945 if (view->argv && view->argv[0] &&
2946 !io_run(&view->io, IO_RD, view->dir, view->argv))
2947 return FALSE;
2948
2949 if (!extra)
2950 setup_update(view, view->id);
2951
2952 return TRUE;
2953 }
2954
2955 static bool
2956 update_view(struct view *view)
2957 {
2958 char *line;
2959 /* Clear the view and redraw everything since the tree sorting
2960 * might have rearranged things. */
2961 bool redraw = view->lines == 0;
2962 bool can_read = TRUE;
2963
2964 if (!view->pipe)
2965 return TRUE;
2966
2967 if (!io_can_read(view->pipe, FALSE)) {
2968 if (view->lines == 0 && view_is_displayed(view)) {
2969 time_t secs = time(NULL) - view->start_time;
2970
2971 if (secs > 1 && secs > view->update_secs) {
2972 if (view->update_secs == 0)
2973 redraw_view(view);
2974 update_view_title(view);
2975 view->update_secs = secs;
2976 }
2977 }
2978 return TRUE;
2979 }
2980
2981 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2982 if (view->encoding) {
2983 line = encoding_convert(view->encoding, line);
2984 }
2985
2986 if (!view->ops->read(view, line)) {
2987 report("Allocation failure");
2988 end_update(view, TRUE);
2989 return FALSE;
2990 }
2991 }
2992
2993 {
2994 unsigned long lines = view->lines;
2995 int digits;
2996
2997 for (digits = 0; lines; digits++)
2998 lines /= 10;
2999
3000 /* Keep the displayed view in sync with line number scaling. */
3001 if (digits != view->digits) {
3002 view->digits = digits;
3003 if (opt_line_number || view_has_flags(view, VIEW_ALWAYS_LINENO))
3004 redraw = TRUE;
3005 }
3006 }
3007
3008 if (io_error(view->pipe)) {
3009 report("Failed to read: %s", io_strerror(view->pipe));
3010 end_update(view, TRUE);
3011
3012 } else if (io_eof(view->pipe)) {
3013 if (view_is_displayed(view))
3014 report("");
3015 end_update(view, FALSE);
3016 }
3017
3018 if (restore_view_position(view))
3019 redraw = TRUE;
3020
3021 if (!view_is_displayed(view))
3022 return TRUE;
3023
3024 if (redraw)
3025 redraw_view_from(view, 0);
3026 else
3027 redraw_view_dirty(view);
3028
3029 /* Update the title _after_ the redraw so that if the redraw picks up a
3030 * commit reference in view->ref it'll be available here. */
3031 update_view_title(view);
3032 return TRUE;
3033 }
3034
3035 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
3036
3037 static struct line *
3038 add_line_data(struct view *view, void *data, enum line_type type)
3039 {
3040 struct line *line;
3041
3042 if (!realloc_lines(&view->line, view->lines, 1))
3043 return NULL;
3044
3045 line = &view->line[view->lines++];
3046 memset(line, 0, sizeof(*line));
3047 line->type = type;
3048 line->data = data;
3049 line->dirty = 1;
3050
3051 return line;
3052 }
3053
3054 static struct line *
3055 add_line_static_data(struct view *view, void *data, enum line_type type)
3056 {
3057 struct line *line = add_line_data(view, data, type);
3058
3059 if (line)
3060 line->dont_free = TRUE;
3061 return line;
3062 }
3063
3064 static struct line *
3065 add_line_text(struct view *view, const char *text, enum line_type type)
3066 {
3067 char *data = text ? strdup(text) : NULL;
3068
3069 return data ? add_line_data(view, data, type) : NULL;
3070 }
3071
3072 static struct line *
3073 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
3074 {
3075 char buf[SIZEOF_STR];
3076 int retval;
3077
3078 FORMAT_BUFFER(buf, sizeof(buf), fmt, retval, FALSE);
3079 return retval >= 0 ? add_line_text(view, buf, type) : NULL;
3080 }
3081
3082 /*
3083 * View opening
3084 */
3085
3086 static void
3087 load_view(struct view *view, enum open_flags flags)
3088 {
3089 if (view->pipe)
3090 end_update(view, TRUE);
3091 if (view->ops->private_size) {
3092 if (!view->private)
3093 view->private = calloc(1, view->ops->private_size);
3094 else
3095 memset(view->private, 0, view->ops->private_size);
3096 }
3097 if (!view->ops->open(view, flags)) {
3098 report("Failed to load %s view", view->name);
3099 return;
3100 }
3101 restore_view_position(view);
3102
3103 if (view->pipe && view->lines == 0) {
3104 /* Clear the old view and let the incremental updating refill
3105 * the screen. */
3106 werase(view->win);
3107 if (!(flags & (OPEN_RELOAD | OPEN_REFRESH)))
3108 clear_position(&view->prev_pos);
3109 report("");
3110 } else if (view_is_displayed(view)) {
3111 redraw_view(view);
3112 report("");
3113 }
3114 }
3115
3116 #define refresh_view(view) load_view(view, OPEN_REFRESH)
3117 #define reload_view(view) load_view(view, OPEN_RELOAD)
3118
3119 static void
3120 split_view(struct view *prev, struct view *view)
3121 {
3122 display[1] = view;
3123 current_view = 1;
3124 view->parent = prev;
3125 resize_display();
3126
3127 if (prev->pos.lineno - prev->pos.offset >= prev->height) {
3128 /* Take the title line into account. */
3129 int lines = prev->pos.lineno - prev->pos.offset - prev->height + 1;
3130
3131 /* Scroll the view that was split if the current line is
3132 * outside the new limited view. */
3133 do_scroll_view(prev, lines);
3134 }
3135
3136 if (view != prev && view_is_displayed(prev)) {
3137 /* "Blur" the previous view. */
3138 update_view_title(prev);
3139 }
3140 }
3141
3142 static void
3143 open_view(struct view *prev, enum request request, enum open_flags flags)
3144 {
3145 bool split = !!(flags & OPEN_SPLIT);
3146 bool reload = !!(flags & (OPEN_RELOAD | OPEN_PREPARED));
3147 struct view *view = VIEW(request);
3148 int nviews = displayed_views();
3149
3150 assert(flags ^ OPEN_REFRESH);
3151
3152 if (view == prev && nviews == 1 && !reload) {
3153 report("Already in %s view", view->name);
3154 return;
3155 }
3156
3157 if (!view_has_flags(view, VIEW_NO_GIT_DIR) && !opt_git_dir[0]) {
3158 report("The %s view is disabled in pager view", view->name);
3159 return;
3160 }
3161
3162 if (split) {
3163 split_view(prev, view);
3164 } else {
3165 maximize_view(view, FALSE);
3166 }
3167
3168 /* No prev signals that this is the first loaded view. */
3169 if (prev && view != prev) {
3170 view->prev = prev;
3171 }
3172
3173 load_view(view, flags);
3174 }
3175
3176 static void
3177 open_argv(struct view *prev, struct view *view, const char *argv[], const char *dir, enum open_flags flags)
3178 {
3179 enum request request = view - views + REQ_OFFSET + 1;
3180
3181 if (view->pipe)
3182 end_update(view, TRUE);
3183 view->dir = dir;
3184
3185 if (!argv_copy(&view->argv, argv)) {
3186 report("Failed to open %s view: %s", view->name, io_strerror(&view->io));
3187 } else {
3188 open_view(prev, request, flags | OPEN_PREPARED);
3189 }
3190 }
3191
3192 static void
3193 open_external_viewer(const char *argv[], const char *dir)
3194 {
3195 def_prog_mode(); /* save current tty modes */
3196 endwin(); /* restore original tty modes */
3197 io_run_fg(argv, dir);
3198 fprintf(stderr, "Press Enter to continue");
3199 getc(opt_tty);
3200 reset_prog_mode();
3201 redraw_display(TRUE);
3202 }
3203
3204 static void
3205 open_mergetool(const char *file)
3206 {
3207 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
3208
3209 open_external_viewer(mergetool_argv, opt_cdup);
3210 }
3211
3212 static void
3213 open_editor(const char *file)
3214 {
3215 const char *editor_argv[SIZEOF_ARG + 1] = { "vi", file, NULL };
3216 char editor_cmd[SIZEOF_STR];
3217 const char *editor;
3218 int argc = 0;
3219
3220 editor = getenv("GIT_EDITOR");
3221 if (!editor && *opt_editor)
3222 editor = opt_editor;
3223 if (!editor)
3224 editor = getenv("VISUAL");
3225 if (!editor)
3226 editor = getenv("EDITOR");
3227 if (!editor)
3228 editor = "vi";
3229
3230 string_ncopy(editor_cmd, editor, strlen(editor));
3231 if (!argv_from_string_no_quotes(editor_argv, &argc, editor_cmd)) {
3232 report("Failed to read editor command");
3233 return;
3234 }
3235
3236 editor_argv[argc] = file;
3237 open_external_viewer(editor_argv, opt_cdup);
3238 }
3239
3240 static void
3241 open_run_request(enum request request)
3242 {
3243 struct run_request *req = get_run_request(request);
3244 const char **argv = NULL;
3245
3246 if (!req) {
3247 report("Unknown run request");
3248 return;
3249 }
3250
3251 if (format_argv(&argv, req->argv, FALSE)) {
3252 if (req->silent)
3253 io_run_bg(argv);
3254 else
3255 open_external_viewer(argv, NULL);
3256 }
3257 if (argv)
3258 argv_free(argv);
3259 free(argv);
3260 }
3261
3262 /*
3263 * User request switch noodle
3264 */
3265
3266 static int
3267 view_driver(struct view *view, enum request request)
3268 {
3269 int i;
3270
3271 if (request == REQ_NONE)
3272 return TRUE;
3273
3274 if (request > REQ_NONE) {
3275 open_run_request(request);
3276 view_request(view, REQ_REFRESH);
3277 return TRUE;
3278 }
3279
3280 request = view_request(view, request);
3281 if (request == REQ_NONE)
3282 return TRUE;
3283
3284 switch (request) {
3285 case REQ_MOVE_UP:
3286 case REQ_MOVE_DOWN:
3287 case REQ_MOVE_PAGE_UP:
3288 case REQ_MOVE_PAGE_DOWN:
3289 case REQ_MOVE_FIRST_LINE:
3290 case REQ_MOVE_LAST_LINE:
3291 move_view(view, request);
3292 break;
3293
3294 case REQ_SCROLL_FIRST_COL:
3295 case REQ_SCROLL_LEFT:
3296 case REQ_SCROLL_RIGHT:
3297 case REQ_SCROLL_LINE_DOWN:
3298 case REQ_SCROLL_LINE_UP:
3299 case REQ_SCROLL_PAGE_DOWN:
3300 case REQ_SCROLL_PAGE_UP:
3301 scroll_view(view, request);
3302 break;
3303
3304 case REQ_VIEW_BLAME:
3305 if (!opt_file[0]) {
3306 report("No file chosen, press %s to open tree view",
3307 get_view_key(view, REQ_VIEW_TREE));
3308 break;
3309 }
3310 open_view(view, request, OPEN_DEFAULT);
3311 break;
3312
3313 case REQ_VIEW_BLOB:
3314 if (!ref_blob[0]) {
3315 report("No file chosen, press %s to open tree view",
3316 get_view_key(view, REQ_VIEW_TREE));
3317 break;
3318 }
3319 open_view(view, request, OPEN_DEFAULT);
3320 break;
3321
3322 case REQ_VIEW_PAGER:
3323 if (view == NULL) {
3324 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
3325 die("Failed to open stdin");
3326 open_view(view, request, OPEN_PREPARED);
3327 break;
3328 }
3329
3330 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3331 report("No pager content, press %s to run command from prompt",
3332 get_view_key(view, REQ_PROMPT));
3333 break;
3334 }
3335 open_view(view, request, OPEN_DEFAULT);
3336 break;
3337
3338 case REQ_VIEW_STAGE:
3339 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3340 report("No stage content, press %s to open the status view and choose file",
3341 get_view_key(view, REQ_VIEW_STATUS));
3342 break;
3343 }
3344 open_view(view, request, OPEN_DEFAULT);
3345 break;
3346
3347 case REQ_VIEW_STATUS:
3348 if (opt_is_inside_work_tree == FALSE) {
3349 report("The status view requires a working tree");
3350 break;
3351 }
3352 open_view(view, request, OPEN_DEFAULT);
3353 break;
3354
3355 case REQ_VIEW_MAIN:
3356 case REQ_VIEW_DIFF:
3357 case REQ_VIEW_LOG:
3358 case REQ_VIEW_TREE:
3359 case REQ_VIEW_HELP:
3360 case REQ_VIEW_BRANCH:
3361 open_view(view, request, OPEN_DEFAULT);
3362 break;
3363
3364 case REQ_NEXT:
3365 case REQ_PREVIOUS:
3366 if (view->parent) {
3367 int line;
3368
3369 view = view->parent;
3370 line = view->pos.lineno;
3371 move_view(view, request);
3372 if (view_is_displayed(view))
3373 update_view_title(view);
3374 if (line != view->pos.lineno)
3375 view_request(view, REQ_ENTER);
3376 } else {
3377 move_view(view, request);
3378 }
3379 break;
3380
3381 case REQ_VIEW_NEXT:
3382 {
3383 int nviews = displayed_views();
3384 int next_view = (current_view + 1) % nviews;
3385
3386 if (next_view == current_view) {
3387 report("Only one view is displayed");
3388 break;
3389 }
3390
3391 current_view = next_view;
3392 /* Blur out the title of the previous view. */
3393 update_view_title(view);
3394 report("");
3395 break;
3396 }
3397 case REQ_REFRESH:
3398 report("Refreshing is not yet supported for the %s view", view->name);
3399 break;
3400
3401 case REQ_MAXIMIZE:
3402 if (displayed_views() == 2)
3403 maximize_view(view, TRUE);
3404 break;
3405
3406 case REQ_OPTIONS:
3407 case REQ_TOGGLE_LINENO:
3408 case REQ_TOGGLE_DATE:
3409 case REQ_TOGGLE_AUTHOR:
3410 case REQ_TOGGLE_FILENAME:
3411 case REQ_TOGGLE_GRAPHIC:
3412 case REQ_TOGGLE_REV_GRAPH:
3413 case REQ_TOGGLE_REFS:
3414 case REQ_TOGGLE_CHANGES:
3415 case REQ_TOGGLE_IGNORE_SPACE:
3416 if (toggle_option(request) && view_has_flags(view, VIEW_DIFF_LIKE))
3417 reload_view(view);
3418 break;
3419
3420 case REQ_TOGGLE_SORT_FIELD:
3421 case REQ_TOGGLE_SORT_ORDER:
3422 report("Sorting is not yet supported for the %s view", view->name);
3423 break;
3424
3425 case REQ_DIFF_CONTEXT_UP:
3426 case REQ_DIFF_CONTEXT_DOWN:
3427 report("Changing the diff context is not yet supported for the %s view", view->name);
3428 break;
3429
3430 case REQ_SEARCH:
3431 case REQ_SEARCH_BACK:
3432 search_view(view, request);
3433 break;
3434
3435 case REQ_FIND_NEXT:
3436 case REQ_FIND_PREV:
3437 find_next(view, request);
3438 break;
3439
3440 case REQ_STOP_LOADING:
3441 foreach_view(view, i) {
3442 if (view->pipe)
3443 report("Stopped loading the %s view", view->name),
3444 end_update(view, TRUE);
3445 }
3446 break;
3447
3448 case REQ_SHOW_VERSION:
3449 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3450 return TRUE;
3451
3452 case REQ_SCREEN_REDRAW:
3453 redraw_display(TRUE);
3454 break;
3455
3456 case REQ_EDIT:
3457 report("Nothing to edit");
3458 break;
3459
3460 case REQ_ENTER:
3461 report("Nothing to enter");
3462 break;
3463
3464 case REQ_VIEW_CLOSE:
3465 /* XXX: Mark closed views by letting view->prev point to the
3466 * view itself. Parents to closed view should never be
3467 * followed. */
3468 if (view->prev && view->prev != view) {
3469 maximize_view(view->prev, TRUE);
3470 view->prev = view;
3471 break;
3472 }
3473 /* Fall-through */
3474 case REQ_QUIT:
3475 return FALSE;
3476
3477 default:
3478 report("Unknown key, press %s for help",
3479 get_view_key(view, REQ_VIEW_HELP));
3480 return TRUE;
3481 }
3482
3483 return TRUE;
3484 }
3485
3486
3487 /*
3488 * View backend utilities
3489 */
3490
3491 enum sort_field {
3492 ORDERBY_NAME,
3493 ORDERBY_DATE,
3494 ORDERBY_AUTHOR,
3495 };
3496
3497 struct sort_state {
3498 const enum sort_field *fields;
3499 size_t size, current;
3500 bool reverse;
3501 };
3502
3503 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3504 #define get_sort_field(state) ((state).fields[(state).current])
3505 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3506
3507 static void
3508 sort_view(struct view *view, enum request request, struct sort_state *state,
3509 int (*compare)(const void *, const void *))
3510 {
3511 switch (request) {
3512 case REQ_TOGGLE_SORT_FIELD:
3513 state->current = (state->current + 1) % state->size;
3514 break;
3515
3516 case REQ_TOGGLE_SORT_ORDER:
3517 state->reverse = !state->reverse;
3518 break;
3519 default:
3520 die("Not a sort request");
3521 }
3522
3523 qsort(view->line, view->lines, sizeof(*view->line), compare);
3524 redraw_view(view);
3525 }
3526
3527 static bool
3528 update_diff_context(enum request request)
3529 {
3530 int diff_context = opt_diff_context;
3531
3532 switch (request) {
3533 case REQ_DIFF_CONTEXT_UP:
3534 opt_diff_context += 1;
3535 update_diff_context_arg(opt_diff_context);
3536 break;
3537
3538 case REQ_DIFF_CONTEXT_DOWN:
3539 if (opt_diff_context == 0) {
3540 report("Diff context cannot be less than zero");
3541 break;
3542 }
3543 opt_diff_context -= 1;
3544 update_diff_context_arg(opt_diff_context);
3545 break;
3546
3547 default:
3548 die("Not a diff context request");
3549 }
3550
3551 return diff_context != opt_diff_context;
3552 }
3553
3554 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3555
3556 /* Small author cache to reduce memory consumption. It uses binary
3557 * search to lookup or find place to position new entries. No entries
3558 * are ever freed. */
3559 static const char *
3560 get_author(const char *name)
3561 {
3562 static const char **authors;
3563 static size_t authors_size;
3564 int from = 0, to = authors_size - 1;
3565
3566 while (from <= to) {
3567 size_t pos = (to + from) / 2;
3568 int cmp = strcmp(name, authors[pos]);
3569
3570 if (!cmp)
3571 return authors[pos];
3572
3573 if (cmp < 0)
3574 to = pos - 1;
3575 else
3576 from = pos + 1;
3577 }
3578
3579 if (!realloc_authors(&authors, authors_size, 1))
3580 return NULL;
3581 name = strdup(name);
3582 if (!name)
3583 return NULL;
3584
3585 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3586 authors[from] = name;
3587 authors_size++;
3588
3589 return name;
3590 }
3591
3592 static void
3593 parse_timesec(struct time *time, const char *sec)
3594 {
3595 time->sec = (time_t) atol(sec);
3596 }
3597
3598 static void
3599 parse_timezone(struct time *time, const char *zone)
3600 {
3601 long tz;
3602
3603 tz = ('0' - zone[1]) * 60 * 60 * 10;
3604 tz += ('0' - zone[2]) * 60 * 60;
3605 tz += ('0' - zone[3]) * 60 * 10;
3606 tz += ('0' - zone[4]) * 60;
3607
3608 if (zone[0] == '-')
3609 tz = -tz;
3610
3611 time->tz = tz;
3612 time->sec -= tz;
3613 }
3614
3615 /* Parse author lines where the name may be empty:
3616 * author <email@address.tld> 1138474660 +0100
3617 */
3618 static void
3619 parse_author_line(char *ident, const char **author, struct time *time)
3620 {
3621 char *nameend = strchr(ident, '<');
3622 char *emailend = strchr(ident, '>');
3623
3624 if (nameend && emailend)
3625 *nameend = *emailend = 0;
3626 ident = chomp_string(ident);
3627 if (!*ident) {
3628 if (nameend)
3629 ident = chomp_string(nameend + 1);
3630 if (!*ident)
3631 ident = "Unknown";
3632 }
3633
3634 *author = get_author(ident);
3635
3636 /* Parse epoch and timezone */
3637 if (emailend && emailend[1] == ' ') {
3638 char *secs = emailend + 2;
3639 char *zone = strchr(secs, ' ');
3640
3641 parse_timesec(time, secs);
3642
3643 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3644 parse_timezone(time, zone + 1);
3645 }
3646 }
3647
3648 static struct line *
3649 find_prev_line_by_type(struct view *view, struct line *line, enum line_type type)
3650 {
3651 for (; view->line < line; line--)
3652 if (line->type == type)
3653 return line;
3654
3655 return NULL;
3656 }
3657
3658 /*
3659 * Blame
3660 */
3661
3662 struct blame_commit {
3663 char id[SIZEOF_REV]; /* SHA1 ID. */
3664 char title[128]; /* First line of the commit message. */
3665 const char *author; /* Author of the commit. */
3666 struct time time; /* Date from the author ident. */
3667 char filename[128]; /* Name of file. */
3668 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
3669 char parent_filename[128]; /* Parent/previous name of file. */
3670 };
3671
3672 struct blame_header {
3673 char id[SIZEOF_REV]; /* SHA1 ID. */
3674 size_t orig_lineno;
3675 size_t lineno;
3676 size_t group;
3677 };
3678
3679 static bool
3680 parse_number(const char **posref, size_t *number, size_t min, size_t max)
3681 {
3682 const char *pos = *posref;
3683
3684 *posref = NULL;
3685 pos = strchr(pos + 1, ' ');
3686 if (!pos || !isdigit(pos[1]))
3687 return FALSE;
3688 *number = atoi(pos + 1);
3689 if (*number < min || *number > max)
3690 return FALSE;
3691
3692 *posref = pos;
3693 return TRUE;
3694 }
3695
3696 static bool
3697 parse_blame_header(struct blame_header *header, const char *text, size_t max_lineno)
3698 {
3699 const char *pos = text + SIZEOF_REV - 2;
3700
3701 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
3702 return FALSE;
3703
3704 string_ncopy(header->id, text, SIZEOF_REV);
3705
3706 if (!parse_number(&pos, &header->orig_lineno, 1, 9999999) ||
3707 !parse_number(&pos, &header->lineno, 1, max_lineno) ||
3708 !parse_number(&pos, &header->group, 1, max_lineno - header->lineno + 1))
3709 return FALSE;
3710
3711 return TRUE;
3712 }
3713
3714 static bool
3715 match_blame_header(const char *name, char **line)
3716 {
3717 size_t namelen = strlen(name);
3718 bool matched = !strncmp(name, *line, namelen);
3719
3720 if (matched)
3721 *line += namelen;
3722
3723 return matched;
3724 }
3725
3726 static bool
3727 parse_blame_info(struct blame_commit *commit, char *line)
3728 {
3729 if (match_blame_header("author ", &line)) {
3730 commit->author = get_author(line);
3731
3732 } else if (match_blame_header("author-time ", &line)) {
3733 parse_timesec(&commit->time, line);
3734
3735 } else if (match_blame_header("author-tz ", &line)) {
3736 parse_timezone(&commit->time, line);
3737
3738 } else if (match_blame_header("summary ", &line)) {
3739 string_ncopy(commit->title, line, strlen(line));
3740
3741 } else if (match_blame_header("previous ", &line)) {
3742 if (strlen(line) <= SIZEOF_REV)
3743 return FALSE;
3744 string_copy_rev(commit->parent_id, line);
3745 line += SIZEOF_REV;
3746 string_ncopy(commit->parent_filename, line, strlen(line));
3747
3748 } else if (match_blame_header("filename ", &line)) {
3749 string_ncopy(commit->filename, line, strlen(line));
3750 return TRUE;
3751 }
3752
3753 return FALSE;
3754 }
3755
3756 /*
3757 * Pager backend
3758 */
3759
3760 static bool
3761 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3762 {
3763 if (draw_lineno(view, lineno))
3764 return TRUE;
3765
3766 draw_text(view, line->type, line->data);
3767 return TRUE;
3768 }
3769
3770 static bool
3771 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3772 {
3773 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3774 char ref[SIZEOF_STR];
3775
3776 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3777 return TRUE;
3778
3779 /* This is the only fatal call, since it can "corrupt" the buffer. */
3780 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3781 return FALSE;
3782
3783 return TRUE;
3784 }
3785
3786 static void
3787 add_pager_refs(struct view *view, struct line *line)
3788 {
3789 char buf[SIZEOF_STR];
3790 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3791 struct ref_list *list;
3792 size_t bufpos = 0, i;
3793 const char *sep = "Refs: ";
3794 bool is_tag = FALSE;
3795
3796 assert(line->type == LINE_COMMIT);
3797
3798 list = get_ref_list(commit_id);
3799 if (!list) {
3800 if (view_has_flags(view, VIEW_ADD_DESCRIBE_REF))
3801 goto try_add_describe_ref;
3802 return;
3803 }
3804
3805 for (i = 0; i < list->size; i++) {
3806 struct ref *ref = list->refs[i];
3807 const char *fmt = ref->tag ? "%s[%s]" :
3808 ref->remote ? "%s<%s>" : "%s%s";
3809
3810 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3811 return;
3812 sep = ", ";
3813 if (ref->tag)
3814 is_tag = TRUE;
3815 }
3816
3817 if (!is_tag && view_has_flags(view, VIEW_ADD_DESCRIBE_REF)) {
3818 try_add_describe_ref:
3819 /* Add <tag>-g<commit_id> "fake" reference. */
3820 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3821 return;
3822 }
3823
3824 if (bufpos == 0)
3825 return;
3826
3827 add_line_text(view, buf, LINE_PP_REFS);
3828 }
3829
3830 static bool
3831 pager_common_read(struct view *view, char *data, enum line_type type)
3832 {
3833 struct line *line;
3834
3835 if (!data)
3836 return TRUE;
3837
3838 line = add_line_text(view, data, type);
3839 if (!line)
3840 return FALSE;
3841
3842 if (line->type == LINE_COMMIT && view_has_flags(view, VIEW_ADD_PAGER_REFS))
3843 add_pager_refs(view, line);
3844
3845 return TRUE;
3846 }
3847
3848 static bool
3849 pager_read(struct view *view, char *data)
3850 {
3851 if (!data)
3852 return TRUE;
3853
3854 return pager_common_read(view, data, get_line_type(data));
3855 }
3856
3857 static enum request
3858 pager_request(struct view *view, enum request request, struct line *line)
3859 {
3860 int split = 0;
3861
3862 if (request != REQ_ENTER)
3863 return request;
3864
3865 if (line->type == LINE_COMMIT && view_has_flags(view, VIEW_OPEN_DIFF)) {
3866 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3867 split = 1;
3868 }
3869
3870 /* Always scroll the view even if it was split. That way
3871 * you can use Enter to scroll through the log view and
3872 * split open each commit diff. */
3873 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3874
3875 /* FIXME: A minor workaround. Scrolling the view will call report("")
3876 * but if we are scrolling a non-current view this won't properly
3877 * update the view title. */
3878 if (split)
3879 update_view_title(view);
3880
3881 return REQ_NONE;
3882 }
3883
3884 static bool
3885 pager_grep(struct view *view, struct line *line)
3886 {
3887 const char *text[] = { line->data, NULL };
3888
3889 return grep_text(view, text);
3890 }
3891
3892 static void
3893 pager_select(struct view *view, struct line *line)
3894 {
3895 if (line->type == LINE_COMMIT) {
3896 char *text = (char *)line->data + STRING_SIZE("commit ");
3897
3898 if (!view_has_flags(view, VIEW_NO_REF))
3899 string_copy_rev(view->ref, text);
3900 string_copy_rev(ref_commit, text);
3901 }
3902 }
3903
3904 static bool
3905 pager_open(struct view *view, enum open_flags flags)
3906 {
3907 return begin_update(view, NULL, NULL, flags);
3908 }
3909
3910 static struct view_ops pager_ops = {
3911 "line",
3912 VIEW_OPEN_DIFF | VIEW_NO_REF | VIEW_NO_GIT_DIR,
3913 0,
3914 pager_open,
3915 pager_read,
3916 pager_draw,
3917 pager_request,
3918 pager_grep,
3919 pager_select,
3920 };
3921
3922 static bool
3923 log_open(struct view *view, enum open_flags flags)
3924 {
3925 static const char *log_argv[] = {
3926 "git", "log", ENCODING_ARG, "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3927 };
3928
3929 return begin_update(view, NULL, log_argv, flags);
3930 }
3931
3932 static enum request
3933 log_request(struct view *view, enum request request, struct line *line)
3934 {
3935 switch (request) {
3936 case REQ_REFRESH:
3937 load_refs();
3938 refresh_view(view);
3939 return REQ_NONE;
3940 default:
3941 return pager_request(view, request, line);
3942 }
3943 }
3944
3945 static struct view_ops log_ops = {
3946 "line",
3947 VIEW_ADD_PAGER_REFS | VIEW_OPEN_DIFF,
3948 0,
3949 log_open,
3950 pager_read,
3951 pager_draw,
3952 log_request,
3953 pager_grep,
3954 pager_select,
3955 };
3956
3957 struct diff_state {
3958 bool reading_diff_stat;
3959 bool combined_diff;
3960 };
3961
3962 static bool
3963 diff_open(struct view *view, enum open_flags flags)
3964 {
3965 static const char *diff_argv[] = {
3966 "git", "show", ENCODING_ARG, "--pretty=fuller", "--no-color", "--root",
3967 "--patch-with-stat", "--find-copies-harder", "-C",
3968 opt_notes_arg, opt_diff_context_arg, opt_ignore_space_arg,
3969 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3970 };
3971
3972 return begin_update(view, NULL, diff_argv, flags);
3973 }
3974
3975 static bool
3976 diff_common_read(struct view *view, char *data, struct diff_state *state)
3977 {
3978 enum line_type type;
3979
3980 if (state->reading_diff_stat) {
3981 size_t len = strlen(data);
3982 char *pipe = strchr(data, '|');
3983 bool has_histogram = data[len - 1] == '-' || data[len - 1] == '+';
3984 bool has_bin_diff = pipe && strstr(pipe, "Bin") && strstr(pipe, "->");
3985
3986 if (pipe && (has_histogram || has_bin_diff)) {
3987 return add_line_text(view, data, LINE_DIFF_STAT) != NULL;
3988 } else {
3989 state->reading_diff_stat = FALSE;
3990 }
3991
3992 } else if (!strcmp(data, "---")) {
3993 state->reading_diff_stat = TRUE;
3994 }
3995
3996 type = get_line_type(data);
3997
3998 if (type == LINE_DIFF_HEADER) {
3999 const int len = line_info[LINE_DIFF_HEADER].linelen;
4000
4001 if (!strncmp(data + len, "combined ", strlen("combined ")) ||
4002 !strncmp(data + len, "cc ", strlen("cc ")))
4003 state->combined_diff = TRUE;
4004 }
4005
4006 /* ADD2 and DEL2 are only valid in combined diff hunks */
4007 if (!state->combined_diff && (type == LINE_DIFF_ADD2 || type == LINE_DIFF_DEL2))
4008 type = LINE_DEFAULT;
4009
4010 return pager_common_read(view, data, type);
4011 }
4012
4013 static enum request
4014 diff_common_enter(struct view *view, enum request request, struct line *line)
4015 {
4016 if (line->type == LINE_DIFF_STAT) {
4017 int file_number = 0;
4018
4019 while (line >= view->line && line->type == LINE_DIFF_STAT) {
4020 file_number++;
4021 line--;
4022 }
4023
4024 while (line < view->line + view->lines) {
4025 if (line->type == LINE_DIFF_HEADER) {
4026 if (file_number == 1) {
4027 break;
4028 }
4029 file_number--;
4030 }
4031 line++;
4032 }
4033
4034
4035 select_view_line(view, line - view->line);
4036 report("");
4037 return REQ_NONE;
4038
4039 } else {
4040 return pager_request(view, request, line);
4041 }
4042 }
4043
4044 static bool
4045 diff_common_draw_part(struct view *view, enum line_type *type, char **text, char c, enum line_type next_type)
4046 {
4047 char *sep = strchr(*text, c);
4048
4049 if (sep != NULL) {
4050 *sep = 0;
4051 draw_text(view, *type, *text);
4052 *sep = c;
4053 *text = sep;
4054 *type = next_type;
4055 }
4056
4057 return sep != NULL;
4058 }
4059
4060 static bool
4061 diff_common_draw(struct view *view, struct line *line, unsigned int lineno)
4062 {
4063 char *text = line->data;
4064 enum line_type type = line->type;
4065
4066 if (draw_lineno(view, lineno))
4067 return TRUE;
4068
4069 if (type == LINE_DIFF_STAT) {
4070 diff_common_draw_part(view, &type, &text, '|', LINE_DEFAULT);
4071 if (diff_common_draw_part(view, &type, &text, 'B', LINE_DEFAULT)) {
4072 /* Handle binary diffstat: Bin <deleted> -> <added> bytes */
4073 diff_common_draw_part(view, &type, &text, ' ', LINE_DIFF_DEL);
4074 diff_common_draw_part(view, &type, &text, '-', LINE_DEFAULT);
4075 diff_common_draw_part(view, &type, &text, ' ', LINE_DIFF_ADD);
4076 diff_common_draw_part(view, &type, &text, 'b', LINE_DEFAULT);
4077
4078 } else {
4079 diff_common_draw_part(view, &type, &text, '+', LINE_DIFF_ADD);
4080 diff_common_draw_part(view, &type, &text, '-', LINE_DIFF_DEL);
4081 }
4082 }
4083
4084 draw_text(view, type, text);
4085 return TRUE;
4086 }
4087
4088 static bool
4089 diff_read(struct view *view, char *data)
4090 {
4091 struct diff_state *state = view->private;
4092
4093 if (!data) {
4094 /* Fall back to retry if no diff will be shown. */
4095 if (view->lines == 0 && opt_file_argv) {
4096 int pos = argv_size(view->argv)
4097 - argv_size(opt_file_argv) - 1;
4098
4099 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
4100 for (; view->argv[pos]; pos++) {
4101 free((void *) view->argv[pos]);
4102 view->argv[pos] = NULL;
4103 }
4104
4105 if (view->pipe)
4106 io_done(view->pipe);
4107 if (io_run(&view->io, IO_RD, view->dir, view->argv))
4108 return FALSE;
4109 }
4110 }
4111 return TRUE;
4112 }
4113
4114 return diff_common_read(view, data, state);
4115 }
4116
4117 static bool
4118 diff_blame_line(const char *ref, const char *file, unsigned long lineno,
4119 struct blame_header *header, struct blame_commit *commit)
4120 {
4121 char line_arg[SIZEOF_STR];
4122 const char *blame_argv[] = {
4123 "git", "blame", ENCODING_ARG, "-p", line_arg, ref, "--", file, NULL
4124 };
4125 struct io io;
4126 bool ok = FALSE;
4127 char *buf;
4128
4129 if (!string_format(line_arg, "-L%d,+1", lineno))
4130 return FALSE;
4131
4132 if (!io_run(&io, IO_RD, opt_cdup, blame_argv))
4133 return FALSE;
4134
4135 while ((buf = io_get(&io, '\n', TRUE))) {
4136 if (header) {
4137 if (!parse_blame_header(header, buf, 9999999))
4138 break;
4139 header = NULL;
4140
4141 } else if (parse_blame_info(commit, buf)) {
4142 ok = TRUE;
4143 break;
4144 }
4145 }
4146
4147 if (io_error(&io))
4148 ok = FALSE;
4149
4150 io_done(&io);
4151 return ok;
4152 }
4153
4154 static bool
4155 parse_chunk_lineno(int *lineno, const char *chunk, int marker)
4156 {
4157 return prefixcmp(chunk, "@@ -") ||
4158 !(chunk = strchr(chunk, marker)) ||
4159 parse_int(lineno, chunk + 1, 0, 9999999) != OPT_OK;
4160 }
4161
4162 static enum request
4163 diff_trace_origin(struct view *view, struct line *line)
4164 {
4165 struct line *diff = find_prev_line_by_type(view, line, LINE_DIFF_HEADER);
4166 struct line *chunk = find_prev_line_by_type(view, line, LINE_DIFF_CHUNK);
4167 const char *chunk_data;
4168 int chunk_marker = line->type == LINE_DIFF_DEL ? '-' : '+';
4169 int lineno = 0;
4170 const char *file = NULL;
4171 char ref[SIZEOF_REF];
4172 struct blame_header header;
4173 struct blame_commit commit;
4174
4175 if (!diff || !chunk || chunk == line) {
4176 report("The line to trace must be inside a diff chunk");
4177 return REQ_NONE;
4178 }
4179
4180 for (; diff < line && !file; diff++) {
4181 const char *data = diff->data;
4182
4183 if (!prefixcmp(data, "--- a/")) {
4184 file = data + STRING_SIZE("--- a/");
4185 break;
4186 }
4187 }
4188
4189 if (diff == line || !file) {
4190 report("Failed to read the file name");
4191 return REQ_NONE;
4192 }
4193
4194 chunk_data = chunk->data;
4195
4196 if (parse_chunk_lineno(&lineno, chunk_data, chunk_marker)) {
4197 report("Failed to read the line number");
4198 return REQ_NONE;
4199 }
4200
4201 if (lineno == 0) {
4202 report("This is the origin of the line");
4203 return REQ_NONE;
4204 }
4205
4206 for (chunk += 1; chunk < line; chunk++) {
4207 if (chunk->type == LINE_DIFF_ADD) {
4208 lineno += chunk_marker == '+';
4209 } else if (chunk->type == LINE_DIFF_DEL) {
4210 lineno += chunk_marker == '-';
4211 } else {
4212 lineno++;
4213 }
4214 }
4215
4216 if (chunk_marker == '+')
4217 string_copy(ref, view->vid);
4218 else
4219 string_format(ref, "%s^", view->vid);
4220
4221 if (!diff_blame_line(ref, file, lineno, &header, &commit)) {
4222 report("Failed to read blame data");
4223 return REQ_NONE;
4224 }
4225
4226 string_ncopy(opt_file, commit.filename, strlen(commit.filename));
4227 string_copy(opt_ref, header.id);
4228 opt_goto_line = header.orig_lineno - 1;
4229
4230 return REQ_VIEW_BLAME;
4231 }
4232
4233 static enum request
4234 diff_request(struct view *view, enum request request, struct line *line)
4235 {
4236 switch (request) {
4237 case REQ_VIEW_BLAME:
4238 return diff_trace_origin(view, line);
4239
4240 case REQ_DIFF_CONTEXT_UP:
4241 case REQ_DIFF_CONTEXT_DOWN:
4242 if (!update_diff_context(request))
4243 return REQ_NONE;
4244 reload_view(view);
4245 return REQ_NONE;
4246
4247
4248 case REQ_ENTER:
4249 return diff_common_enter(view, request, line);
4250
4251 default:
4252 return pager_request(view, request, line);
4253 }
4254 }
4255
4256 static void
4257 diff_select(struct view *view, struct line *line)
4258 {
4259 if (line->type == LINE_DIFF_STAT) {
4260 const char *key = get_view_key(view, REQ_ENTER);
4261
4262 string_format(view->ref, "Press '%s' to jump to file diff", key);
4263 } else {
4264 string_ncopy(view->ref, view->id, strlen(view->id));
4265 return pager_select(view, line);
4266 }
4267 }
4268
4269 static struct view_ops diff_ops = {
4270 "line",
4271 VIEW_DIFF_LIKE | VIEW_ADD_DESCRIBE_REF | VIEW_ADD_PAGER_REFS,
4272 sizeof(struct diff_state),
4273 diff_open,
4274 diff_read,
4275 diff_common_draw,
4276 diff_request,
4277 pager_grep,
4278 diff_select,
4279 };
4280
4281 /*
4282 * Help backend
4283 */
4284
4285 static bool
4286 help_draw(struct view *view, struct line *line, unsigned int lineno)
4287 {
4288 if (line->type == LINE_HELP_KEYMAP) {
4289 struct keybinding_table *table = line->data;
4290 enum keymap keymap = table - keybindings;
4291
4292 draw_formatted(view, line->type, "[%c] %s bindings",
4293 table->hidden ? '+' : '-',
4294 enum_name(keymap_map[keymap]));
4295 return TRUE;
4296 } else {
4297 return pager_draw(view, line, lineno);
4298 }
4299 }
4300
4301 static bool
4302 help_open_keymap_title(struct view *view, struct keybinding_table *keymap)
4303 {
4304 add_line_static_data(view, keymap, LINE_HELP_KEYMAP);
4305 return keymap->hidden;
4306 }
4307
4308 static void
4309 help_open_keymap(struct view *view, enum keymap keymap)
4310 {
4311 const char *group = NULL;
4312 char buf[SIZEOF_STR];
4313 size_t bufpos;
4314 bool add_title = TRUE;
4315 int i;
4316
4317 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
4318 const char *key = NULL;
4319
4320 if (req_info[i].request == REQ_NONE)
4321 continue;
4322
4323 if (!req_info[i].request) {
4324 group = req_info[i].help;
4325 continue;
4326 }
4327
4328 key = get_keys(keymap, req_info[i].request, TRUE);
4329 if (!key || !*key)
4330 continue;
4331
4332 if (add_title && help_open_keymap_title(view, &keybindings[keymap]))
4333 return;
4334 add_title = FALSE;
4335
4336 if (group) {
4337 add_line_text(view, group, LINE_HELP_GROUP);
4338 group = NULL;
4339 }
4340
4341 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
4342 enum_name(req_info[i]), req_info[i].help);
4343 }
4344
4345 group = "External commands:";
4346
4347 for (i = 0; i < run_requests; i++) {
4348 struct run_request *req = get_run_request(REQ_NONE + i + 1);
4349 const char *key;
4350 int argc;
4351
4352 if (!req || req->keymap != keymap)
4353 continue;
4354
4355 key = get_key_name(req->key);
4356 if (!*key)
4357 key = "(no key defined)";
4358
4359 if (add_title && help_open_keymap_title(view, &keybindings[keymap]))
4360 return;
4361 add_title = FALSE;
4362
4363 if (group) {
4364 add_line_text(view, group, LINE_HELP_GROUP);
4365 group = NULL;
4366 }
4367
4368 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
4369 if (!string_format_from(buf, &bufpos, "%s%s",
4370 argc ? " " : "", req->argv[argc]))
4371 return;
4372
4373 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
4374 }
4375 }
4376
4377 static bool
4378 help_open(struct view *view, enum open_flags flags)
4379 {
4380 enum keymap keymap;
4381
4382 reset_view(view);
4383 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
4384 add_line_text(view, "", LINE_DEFAULT);
4385
4386 for (keymap = 0; keymap < ARRAY_SIZE(keymap_map); keymap++)
4387 help_open_keymap(view, keymap);
4388
4389 return TRUE;
4390 }
4391
4392 static enum request
4393 help_request(struct view *view, enum request request, struct line *line)
4394 {
4395 switch (request) {
4396 case REQ_ENTER:
4397 if (line->type == LINE_HELP_KEYMAP) {
4398 struct keybinding_table *keymap = line->data;
4399
4400 keymap->hidden = !keymap->hidden;
4401 refresh_view(view);
4402 }
4403
4404 return REQ_NONE;
4405 default:
4406 return pager_request(view, request, line);
4407 }
4408 }
4409
4410 static struct view_ops help_ops = {
4411 "line",
4412 VIEW_NO_GIT_DIR,
4413 0,
4414 help_open,
4415 NULL,
4416 help_draw,
4417 help_request,
4418 pager_grep,
4419 pager_select,
4420 };
4421
4422
4423 /*
4424 * Tree backend
4425 */
4426
4427 struct tree_stack_entry {
4428 struct tree_stack_entry *prev; /* Entry below this in the stack */
4429 unsigned long lineno; /* Line number to restore */
4430 char *name; /* Position of name in opt_path */
4431 };
4432
4433 /* The top of the path stack. */
4434 static struct tree_stack_entry *tree_stack = NULL;
4435 unsigned long tree_lineno = 0;
4436
4437 static void
4438 pop_tree_stack_entry(void)
4439 {
4440 struct tree_stack_entry *entry = tree_stack;
4441
4442 tree_lineno = entry->lineno;
4443 entry->name[0] = 0;
4444 tree_stack = entry->prev;
4445 free(entry);
4446 }
4447
4448 static void
4449 push_tree_stack_entry(const char *name, unsigned long lineno)
4450 {
4451 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
4452 size_t pathlen = strlen(opt_path);
4453
4454 if (!entry)
4455 return;
4456
4457 entry->prev = tree_stack;
4458 entry->name = opt_path + pathlen;
4459 tree_stack = entry;
4460
4461 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
4462 pop_tree_stack_entry();
4463 return;
4464 }
4465
4466 /* Move the current line to the first tree entry. */
4467 tree_lineno = 1;
4468 entry->lineno = lineno;
4469 }
4470
4471 /* Parse output from git-ls-tree(1):
4472 *
4473 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
4474 */
4475
4476 #define SIZEOF_TREE_ATTR \
4477 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
4478
4479 #define SIZEOF_TREE_MODE \
4480 STRING_SIZE("100644 ")
4481
4482 #define TREE_ID_OFFSET \
4483 STRING_SIZE("100644 blob ")
4484
4485 struct tree_entry {
4486 char id[SIZEOF_REV];
4487 mode_t mode;
4488 struct time time; /* Date from the author ident. */
4489 const char *author; /* Author of the commit. */
4490 char name[1];
4491 };
4492
4493 struct tree_state {
4494 const char *author_name;
4495 struct time author_time;
4496 bool read_date;
4497 };
4498
4499 static const char *
4500 tree_path(const struct line *line)
4501 {
4502 return ((struct tree_entry *) line->data)->name;
4503 }
4504
4505 static int
4506 tree_compare_entry(const struct line *line1, const struct line *line2)
4507 {
4508 if (line1->type != line2->type)
4509 return line1->type == LINE_TREE_DIR ? -1 : 1;
4510 return strcmp(tree_path(line1), tree_path(line2));
4511 }
4512
4513 static const enum sort_field tree_sort_fields[] = {
4514 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4515 };
4516 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
4517
4518 static int
4519 tree_compare(const void *l1, const void *l2)
4520 {
4521 const struct line *line1 = (const struct line *) l1;
4522 const struct line *line2 = (const struct line *) l2;
4523 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
4524 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
4525
4526 if (line1->type == LINE_TREE_HEAD)
4527 return -1;
4528 if (line2->type == LINE_TREE_HEAD)
4529 return 1;
4530
4531 switch (get_sort_field(tree_sort_state)) {
4532 case ORDERBY_DATE:
4533 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
4534
4535 case ORDERBY_AUTHOR:
4536 return sort_order(tree_sort_state, strcmp_null(entry1->author, entry2->author));
4537
4538 case ORDERBY_NAME:
4539 default:
4540 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
4541 }
4542 }
4543
4544
4545 static struct line *
4546 tree_entry(struct view *view, enum line_type type, const char *path,
4547 const char *mode, const char *id)
4548 {
4549 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
4550 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
4551
4552 if (!entry || !line) {
4553 free(entry);
4554 return NULL;
4555 }
4556
4557 strncpy(entry->name, path, strlen(path));
4558 if (mode)
4559 entry->mode = strtoul(mode, NULL, 8);
4560 if (id)
4561 string_copy_rev(entry->id, id);
4562
4563 return line;
4564 }
4565
4566 static bool
4567 tree_read_date(struct view *view, char *text, struct tree_state *state)
4568 {
4569 if (!text && state->read_date) {
4570 state->read_date = FALSE;
4571 return TRUE;
4572
4573 } else if (!text) {
4574 /* Find next entry to process */
4575 const char *log_file[] = {
4576 "git", "log", ENCODING_ARG, "--no-color", "--pretty=raw",
4577 "--cc", "--raw", view->id, "--", "%(directory)", NULL
4578 };
4579
4580 if (!view->lines) {
4581 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
4582 report("Tree is empty");
4583 return TRUE;
4584 }
4585
4586 if (!begin_update(view, opt_cdup, log_file, OPEN_EXTRA)) {
4587 report("Failed to load tree data");
4588 return TRUE;
4589 }
4590
4591 state->read_date = TRUE;
4592 return FALSE;
4593
4594 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
4595 parse_author_line(text + STRING_SIZE("author "),
4596 &state->author_name, &state->author_time);
4597
4598 } else if (*text == ':') {
4599 char *pos;
4600 size_t annotated = 1;
4601 size_t i;
4602
4603 pos = strchr(text, '\t');
4604 if (!pos)
4605 return TRUE;
4606 text = pos + 1;
4607 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
4608 text += strlen(opt_path);
4609 pos = strchr(text, '/');
4610 if (pos)
4611 *pos = 0;
4612
4613 for (i = 1; i < view->lines; i++) {
4614 struct line *line = &view->line[i];
4615 struct tree_entry *entry = line->data;
4616
4617 annotated += !!entry->author;
4618 if (entry->author || strcmp(entry->name, text))
4619 continue;
4620
4621 entry->author = state->author_name;
4622 entry->time = state->author_time;
4623 line->dirty = 1;
4624 break;
4625 }
4626
4627 if (annotated == view->lines)
4628 io_kill(view->pipe);
4629 }
4630 return TRUE;
4631 }
4632
4633 static bool
4634 tree_read(struct view *view, char *text)
4635 {
4636 struct tree_state *state = view->private;
4637 struct tree_entry *data;
4638 struct line *entry, *line;
4639 enum line_type type;
4640 size_t textlen = text ? strlen(text) : 0;
4641 char *path = text + SIZEOF_TREE_ATTR;
4642
4643 if (state->read_date || !text)
4644 return tree_read_date(view, text, state);
4645
4646 if (textlen <= SIZEOF_TREE_ATTR)
4647 return FALSE;
4648 if (view->lines == 0 &&
4649 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
4650 return FALSE;
4651
4652 /* Strip the path part ... */
4653 if (*opt_path) {
4654 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
4655 size_t striplen = strlen(opt_path);
4656
4657 if (pathlen > striplen)
4658 memmove(path, path + striplen,
4659 pathlen - striplen + 1);
4660
4661 /* Insert "link" to parent directory. */
4662 if (view->lines == 1 &&
4663 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
4664 return FALSE;
4665 }
4666
4667 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
4668 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
4669 if (!entry)
4670 return FALSE;
4671 data = entry->data;
4672
4673 /* Skip "Directory ..." and ".." line. */
4674 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
4675 if (tree_compare_entry(line, entry) <= 0)
4676 continue;
4677
4678 memmove(line + 1, line, (entry - line) * sizeof(*entry));
4679
4680 line->data = data;
4681 line->type = type;
4682 for (; line <= entry; line++)
4683 line->dirty = line->cleareol = 1;
4684 return TRUE;
4685 }
4686
4687 if (tree_lineno > view->pos.lineno) {
4688 view->pos.lineno = tree_lineno;
4689 tree_lineno = 0;
4690 }
4691
4692 return TRUE;
4693 }
4694
4695 static bool
4696 tree_draw(struct view *view, struct line *line, unsigned int lineno)
4697 {
4698 struct tree_entry *entry = line->data;
4699
4700 if (line->type == LINE_TREE_HEAD) {
4701 if (draw_text(view, line->type, "Directory path /"))
4702 return TRUE;
4703 } else {
4704 if (draw_mode(view, entry->mode))
4705 return TRUE;
4706
4707 if (draw_author(view, entry->author))
4708 return TRUE;
4709
4710 if (draw_date(view, &entry->time))
4711 return TRUE;
4712 }
4713
4714 draw_text(view, line->type, entry->name);
4715 return TRUE;
4716 }
4717
4718 static void
4719 open_blob_editor(const char *id)
4720 {
4721 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
4722 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
4723 int fd = mkstemp(file);
4724
4725 if (fd == -1)
4726 report("Failed to create temporary file");
4727 else if (!io_run_append(blob_argv, fd))
4728 report("Failed to save blob data to file");
4729 else
4730 open_editor(file);
4731 if (fd != -1)
4732 unlink(file);
4733 }
4734
4735 static enum request
4736 tree_request(struct view *view, enum request request, struct line *line)
4737 {
4738 enum open_flags flags;
4739 struct tree_entry *entry = line->data;
4740
4741 switch (request) {
4742 case REQ_VIEW_BLAME:
4743 if (line->type != LINE_TREE_FILE) {
4744 report("Blame only supported for files");
4745 return REQ_NONE;
4746 }
4747
4748 string_copy(opt_ref, view->vid);
4749 return request;
4750
4751 case REQ_EDIT:
4752 if (line->type != LINE_TREE_FILE) {
4753 report("Edit only supported for files");
4754 } else if (!is_head_commit(view->vid)) {
4755 open_blob_editor(entry->id);
4756 } else {
4757 open_editor(opt_file);
4758 }
4759 return REQ_NONE;
4760
4761 case REQ_TOGGLE_SORT_FIELD:
4762 case REQ_TOGGLE_SORT_ORDER:
4763 sort_view(view, request, &tree_sort_state, tree_compare);
4764 return REQ_NONE;
4765
4766 case REQ_PARENT:
4767 if (!*opt_path) {
4768 /* quit view if at top of tree */
4769 return REQ_VIEW_CLOSE;
4770 }
4771 /* fake 'cd ..' */
4772 line = &view->line[1];
4773 break;
4774
4775 case REQ_ENTER:
4776 break;
4777
4778 default:
4779 return request;
4780 }
4781
4782 /* Cleanup the stack if the tree view is at a different tree. */
4783 while (!*opt_path && tree_stack)
4784 pop_tree_stack_entry();
4785
4786 switch (line->type) {
4787 case LINE_TREE_DIR:
4788 /* Depending on whether it is a subdirectory or parent link
4789 * mangle the path buffer. */
4790 if (line == &view->line[1] && *opt_path) {
4791 pop_tree_stack_entry();
4792
4793 } else {
4794 const char *basename = tree_path(line);
4795
4796 push_tree_stack_entry(basename, view->pos.lineno);
4797 }
4798
4799 /* Trees and subtrees share the same ID, so they are not not
4800 * unique like blobs. */
4801 flags = OPEN_RELOAD;
4802 request = REQ_VIEW_TREE;
4803 break;
4804
4805 case LINE_TREE_FILE:
4806 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4807 request = REQ_VIEW_BLOB;
4808 break;
4809
4810 default:
4811 return REQ_NONE;
4812 }
4813
4814 open_view(view, request, flags);
4815 if (request == REQ_VIEW_TREE)
4816 view->pos.lineno = tree_lineno;
4817
4818 return REQ_NONE;
4819 }
4820
4821 static bool
4822 tree_grep(struct view *view, struct line *line)
4823 {
4824 struct tree_entry *entry = line->data;
4825 const char *text[] = {
4826 entry->name,
4827 mkauthor(entry->author, opt_author_cols, opt_author),
4828 mkdate(&entry->time, opt_date),
4829 NULL
4830 };
4831
4832 return grep_text(view, text);
4833 }
4834
4835 static void
4836 tree_select(struct view *view, struct line *line)
4837 {
4838 struct tree_entry *entry = line->data;
4839
4840 if (line->type == LINE_TREE_FILE) {
4841 string_copy_rev(ref_blob, entry->id);
4842 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4843
4844 } else if (line->type != LINE_TREE_DIR) {
4845 return;
4846 }
4847
4848 string_copy_rev(view->ref, entry->id);
4849 }
4850
4851 static bool
4852 tree_open(struct view *view, enum open_flags flags)
4853 {
4854 static const char *tree_argv[] = {
4855 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4856 };
4857
4858 if (view->lines == 0 && opt_prefix[0]) {
4859 char *pos = opt_prefix;
4860
4861 while (pos && *pos) {
4862 char *end = strchr(pos, '/');
4863
4864 if (end)
4865 *end = 0;
4866 push_tree_stack_entry(pos, 0);
4867 pos = end;
4868 if (end) {
4869 *end = '/';
4870 pos++;
4871 }
4872 }
4873
4874 } else if (strcmp(view->vid, view->id)) {
4875 opt_path[0] = 0;
4876 }
4877
4878 return begin_update(view, opt_cdup, tree_argv, flags);
4879 }
4880
4881 static struct view_ops tree_ops = {
4882 "file",
4883 VIEW_NO_FLAGS,
4884 sizeof(struct tree_state),
4885 tree_open,
4886 tree_read,
4887 tree_draw,
4888 tree_request,
4889 tree_grep,
4890 tree_select,
4891 };
4892
4893 static bool
4894 blob_open(struct view *view, enum open_flags flags)
4895 {
4896 static const char *blob_argv[] = {
4897 "git", "cat-file", "blob", "%(blob)", NULL
4898 };
4899
4900 view->encoding = get_path_encoding(opt_file, opt_encoding);
4901
4902 return begin_update(view, NULL, blob_argv, flags);
4903 }
4904
4905 static bool
4906 blob_read(struct view *view, char *line)
4907 {
4908 if (!line)
4909 return TRUE;
4910 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4911 }
4912
4913 static enum request
4914 blob_request(struct view *view, enum request request, struct line *line)
4915 {
4916 switch (request) {
4917 case REQ_EDIT:
4918 open_blob_editor(view->vid);
4919 return REQ_NONE;
4920 default:
4921 return pager_request(view, request, line);
4922 }
4923 }
4924
4925 static struct view_ops blob_ops = {
4926 "line",
4927 VIEW_NO_FLAGS,
4928 0,
4929 blob_open,
4930 blob_read,
4931 pager_draw,
4932 blob_request,
4933 pager_grep,
4934 pager_select,
4935 };
4936
4937 /*
4938 * Blame backend
4939 *
4940 * Loading the blame view is a two phase job:
4941 *
4942 * 1. File content is read either using opt_file from the
4943 * filesystem or using git-cat-file.
4944 * 2. Then blame information is incrementally added by
4945 * reading output from git-blame.
4946 */
4947
4948 struct blame {
4949 struct blame_commit *commit;
4950 unsigned long lineno;
4951 char text[1];
4952 };
4953
4954 struct blame_state {
4955 struct blame_commit *commit;
4956 int blamed;
4957 bool done_reading;
4958 bool auto_filename_display;
4959 };
4960
4961 static bool
4962 blame_detect_filename_display(struct view *view)
4963 {
4964 bool show_filenames = FALSE;
4965 const char *filename = NULL;
4966 int i;
4967
4968 if (opt_blame_argv) {
4969 for (i = 0; opt_blame_argv[i]; i++) {
4970 if (prefixcmp(opt_blame_argv[i], "-C"))
4971 continue;
4972
4973 show_filenames = TRUE;
4974 }
4975 }
4976
4977 for (i = 0; i < view->lines; i++) {
4978 struct blame *blame = view->line[i].data;
4979
4980 if (blame->commit && blame->commit->id[0]) {
4981 if (!filename)
4982 filename = blame->commit->filename;
4983 else if (strcmp(filename, blame->commit->filename))
4984 show_filenames = TRUE;
4985 }
4986 }
4987
4988 return show_filenames;
4989 }
4990
4991 static bool
4992 blame_open(struct view *view, enum open_flags flags)
4993 {
4994 const char *file_argv[] = { opt_cdup, opt_file , NULL };
4995 char path[SIZEOF_STR];
4996 size_t i;
4997
4998 if (!view->prev && *opt_prefix) {
4999 string_copy(path, opt_file);
5000 if (!string_format(opt_file, "%s%s", opt_prefix, path))
5001 return FALSE;
5002 }
5003
5004 if (*opt_ref || !begin_update(view, opt_cdup, file_argv, flags)) {
5005 const char *blame_cat_file_argv[] = {
5006 "git", "cat-file", "blob", "%(ref):%(file)", NULL
5007 };
5008
5009 if (!begin_update(view, opt_cdup, blame_cat_file_argv, flags))
5010 return FALSE;
5011 }
5012
5013 /* First pass: remove multiple references to the same commit. */
5014 for (i = 0; i < view->lines; i++) {
5015 struct blame *blame = view->line[i].data;
5016
5017 if (blame->commit && blame->commit->id[0])
5018 blame->commit->id[0] = 0;
5019 else
5020 blame->commit = NULL;
5021 }
5022
5023 /* Second pass: free existing references. */
5024 for (i = 0; i < view->lines; i++) {
5025 struct blame *blame = view->line[i].data;
5026
5027 if (blame->commit)
5028 free(blame->commit);
5029 }
5030
5031 string_format(view->vid, "%s", opt_file);
5032 string_format(view->ref, "%s ...", opt_file);
5033
5034 return TRUE;
5035 }
5036
5037 static struct blame_commit *
5038 get_blame_commit(struct view *view, const char *id)
5039 {
5040 size_t i;
5041
5042 for (i = 0; i < view->lines; i++) {
5043 struct blame *blame = view->line[i].data;
5044
5045 if (!blame->commit)
5046 continue;
5047
5048 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
5049 return blame->commit;
5050 }
5051
5052 {
5053 struct blame_commit *commit = calloc(1, sizeof(*commit));
5054
5055 if (commit)
5056 string_ncopy(commit->id, id, SIZEOF_REV);
5057 return commit;
5058 }
5059 }
5060
5061 static struct blame_commit *
5062 read_blame_commit(struct view *view, const char *text, struct blame_state *state)
5063 {
5064 struct blame_header header;
5065 struct blame_commit *commit;
5066 struct blame *blame;
5067
5068 if (!parse_blame_header(&header, text, view->lines))
5069 return NULL;
5070
5071 commit = get_blame_commit(view, text);
5072 if (!commit)
5073 return NULL;
5074
5075 state->blamed += header.group;
5076 while (header.group--) {
5077 struct line *line = &view->line[header.lineno + header.group - 1];
5078
5079 blame = line->data;
5080 blame->commit = commit;
5081 blame->lineno = header.orig_lineno + header.group - 1;
5082 line->dirty = 1;
5083 }
5084
5085 return commit;
5086 }
5087
5088 static bool
5089 blame_read_file(struct view *view, const char *line, struct blame_state *state)
5090 {
5091 if (!line) {
5092 const char *blame_argv[] = {
5093 "git", "blame", ENCODING_ARG, "%(blameargs)", "--incremental",
5094 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
5095 };
5096
5097 if (view->lines == 0 && !view->prev)
5098 die("No blame exist for %s", view->vid);
5099
5100 if (view->lines == 0 || !begin_update(view, opt_cdup, blame_argv, OPEN_EXTRA)) {
5101 report("Failed to load blame data");
5102 return TRUE;
5103 }
5104
5105 if (opt_goto_line > 0) {
5106 select_view_line(view, opt_goto_line);
5107 opt_goto_line = 0;
5108 }
5109
5110 state->done_reading = TRUE;
5111 return FALSE;
5112
5113 } else {
5114 size_t linelen = strlen(line);
5115 struct blame *blame = malloc(sizeof(*blame) + linelen);
5116
5117 if (!blame)
5118 return FALSE;
5119
5120 blame->commit = NULL;
5121 strncpy(blame->text, line, linelen);
5122 blame->text[linelen] = 0;
5123 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
5124 }
5125 }
5126
5127 static bool
5128 blame_read(struct view *view, char *line)
5129 {
5130 struct blame_state *state = view->private;
5131
5132 if (!state->done_reading)
5133 return blame_read_file(view, line, state);
5134
5135 if (!line) {
5136 state->auto_filename_display = blame_detect_filename_display(view);
5137 string_format(view->ref, "%s", view->vid);
5138 if (view_is_displayed(view)) {
5139 update_view_title(view);
5140 redraw_view_from(view, 0);
5141 }
5142 return TRUE;
5143 }
5144
5145 if (!state->commit) {
5146 state->commit = read_blame_commit(view, line, state);
5147 string_format(view->ref, "%s %2d%%", view->vid,
5148 view->lines ? state->blamed * 100 / view->lines : 0);
5149
5150 } else if (parse_blame_info(state->commit, line)) {
5151 state->commit = NULL;
5152 }
5153
5154 return TRUE;
5155 }
5156
5157 static bool
5158 blame_draw(struct view *view, struct line *line, unsigned int lineno)
5159 {
5160 struct blame_state *state = view->private;
5161 struct blame *blame = line->data;
5162 struct time *time = NULL;
5163 const char *id = NULL, *author = NULL, *filename = NULL;
5164 enum line_type id_type = LINE_BLAME_ID;
5165 static const enum line_type blame_colors[] = {
5166 LINE_PALETTE_0,
5167 LINE_PALETTE_1,
5168 LINE_PALETTE_2,
5169 LINE_PALETTE_3,
5170 LINE_PALETTE_4,
5171 LINE_PALETTE_5,
5172 LINE_PALETTE_6,
5173 };
5174
5175 #define BLAME_COLOR(i) \
5176 (blame_colors[(i) % ARRAY_SIZE(blame_colors)])
5177
5178 if (blame->commit && *blame->commit->filename) {
5179 id = blame->commit->id;
5180 author = blame->commit->author;
5181 filename = blame->commit->filename;
5182 time = &blame->commit->time;
5183 id_type = BLAME_COLOR((long) blame->commit);
5184 }
5185
5186 if (draw_date(view, time))
5187 return TRUE;
5188
5189 if (draw_author(view, author))
5190 return TRUE;
5191
5192 if (draw_filename(view, filename, state->auto_filename_display))
5193 return TRUE;
5194
5195 if (draw_field(view, id_type, id, ID_COLS, FALSE))
5196 return TRUE;
5197
5198 if (draw_lineno(view, lineno))
5199 return TRUE;
5200
5201 draw_text(view, LINE_DEFAULT, blame->text);
5202 return TRUE;
5203 }
5204
5205 static bool
5206 check_blame_commit(struct blame *blame, bool check_null_id)
5207 {
5208 if (!blame->commit)
5209 report("Commit data not loaded yet");
5210 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
5211 report("No commit exist for the selected line");
5212 else
5213 return TRUE;
5214 return FALSE;
5215 }
5216
5217 static void
5218 setup_blame_parent_line(struct view *view, struct blame *blame)
5219 {
5220 char from[SIZEOF_REF + SIZEOF_STR];
5221 char to[SIZEOF_REF + SIZEOF_STR];
5222 const char *diff_tree_argv[] = {
5223 "git", "diff", ENCODING_ARG, "--no-textconv", "--no-extdiff",
5224 "--no-color", "-U0", from, to, "--", NULL
5225 };
5226 struct io io;
5227 int parent_lineno = -1;
5228 int blamed_lineno = -1;
5229 char *line;
5230
5231 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
5232 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
5233 !io_run(&io, IO_RD, NULL, diff_tree_argv))
5234 return;
5235
5236 while ((line = io_get(&io, '\n', TRUE))) {
5237 if (*line == '@') {
5238 char *pos = strchr(line, '+');
5239
5240 parent_lineno = atoi(line + 4);
5241 if (pos)
5242 blamed_lineno = atoi(pos + 1);
5243
5244 } else if (*line == '+' && parent_lineno != -1) {
5245 if (blame->lineno == blamed_lineno - 1 &&
5246 !strcmp(blame->text, line + 1)) {
5247 view->pos.lineno = parent_lineno ? parent_lineno - 1 : 0;
5248 break;
5249 }
5250 blamed_lineno++;
5251 }
5252 }
5253
5254 io_done(&io);
5255 }
5256
5257 static enum request
5258 blame_request(struct view *view, enum request request, struct line *line)
5259 {
5260 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5261 struct blame *blame = line->data;
5262
5263 switch (request) {
5264 case REQ_VIEW_BLAME:
5265 if (check_blame_commit(blame, TRUE)) {
5266 string_copy(opt_ref, blame->commit->id);
5267 string_copy(opt_file, blame->commit->filename);
5268 if (blame->lineno)
5269 view->pos.lineno = blame->lineno;
5270 reload_view(view);
5271 }
5272 break;
5273
5274 case REQ_PARENT:
5275 if (!check_blame_commit(blame, TRUE))
5276 break;
5277 if (!*blame->commit->parent_id) {
5278 report("The selected commit has no parents");
5279 } else {
5280 string_copy_rev(opt_ref, blame->commit->parent_id);
5281 string_copy(opt_file, blame->commit->parent_filename);
5282 setup_blame_parent_line(view, blame);
5283 opt_goto_line = blame->lineno;
5284 reload_view(view);
5285 }
5286 break;
5287
5288 case REQ_ENTER:
5289 if (!check_blame_commit(blame, FALSE))
5290 break;
5291
5292 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
5293 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
5294 break;
5295
5296 if (!strcmp(blame->commit->id, NULL_ID)) {
5297 struct view *diff = VIEW(REQ_VIEW_DIFF);
5298 const char *diff_parent_argv[] = {
5299 GIT_DIFF_BLAME(opt_diff_context_arg,
5300 opt_ignore_space_arg, view->vid)
5301 };
5302 const char *diff_no_parent_argv[] = {
5303 GIT_DIFF_BLAME_NO_PARENT(opt_diff_context_arg,
5304 opt_ignore_space_arg, view->vid)
5305 };
5306 const char **diff_index_argv = *blame->commit->parent_id
5307 ? diff_parent_argv : diff_no_parent_argv;
5308
5309 open_argv(view, diff, diff_index_argv, NULL, flags);
5310 if (diff->pipe)
5311 string_copy_rev(diff->ref, NULL_ID);
5312 } else {
5313 open_view(view, REQ_VIEW_DIFF, flags);
5314 }
5315 break;
5316
5317 default:
5318 return request;
5319 }
5320
5321 return REQ_NONE;
5322 }
5323
5324 static bool
5325 blame_grep(struct view *view, struct line *line)
5326 {
5327 struct blame *blame = line->data;
5328 struct blame_commit *commit = blame->commit;
5329 const char *text[] = {
5330 blame->text,
5331 commit ? commit->title : "",
5332 commit ? commit->id : "",
5333 commit && opt_author ? commit->author : "",
5334 commit ? mkdate(&commit->time, opt_date) : "",
5335 NULL
5336 };
5337
5338 return grep_text(view, text);
5339 }
5340
5341 static void
5342 blame_select(struct view *view, struct line *line)
5343 {
5344 struct blame *blame = line->data;
5345 struct blame_commit *commit = blame->commit;
5346
5347 if (!commit)
5348 return;
5349
5350 if (!strcmp(commit->id, NULL_ID))
5351 string_ncopy(ref_commit, "HEAD", 4);
5352 else
5353 string_copy_rev(ref_commit, commit->id);
5354 }
5355
5356 static struct view_ops blame_ops = {
5357 "line",
5358 VIEW_ALWAYS_LINENO,
5359 sizeof(struct blame_state),
5360 blame_open,
5361 blame_read,
5362 blame_draw,
5363 blame_request,
5364 blame_grep,
5365 blame_select,
5366 };
5367
5368 /*
5369 * Branch backend
5370 */
5371
5372 struct branch {
5373 const char *author; /* Author of the last commit. */
5374 struct time time; /* Date of the last activity. */
5375 const struct ref *ref; /* Name and commit ID information. */
5376 };
5377
5378 static const struct ref branch_all;
5379
5380 static const enum sort_field branch_sort_fields[] = {
5381 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
5382 };
5383 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
5384
5385 struct branch_state {
5386 char id[SIZEOF_REV];
5387 };
5388
5389 static int
5390 branch_compare(const void *l1, const void *l2)
5391 {
5392 const struct branch *branch1 = ((const struct line *) l1)->data;
5393 const struct branch *branch2 = ((const struct line *) l2)->data;
5394
5395 if (branch1->ref == &branch_all)
5396 return -1;
5397 else if (branch2->ref == &branch_all)
5398 return 1;
5399
5400 switch (get_sort_field(branch_sort_state)) {
5401 case ORDERBY_DATE:
5402 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
5403
5404 case ORDERBY_AUTHOR:
5405 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
5406
5407 case ORDERBY_NAME:
5408 default:
5409 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
5410 }
5411 }
5412
5413 static bool
5414 branch_draw(struct view *view, struct line *line, unsigned int lineno)
5415 {
5416 struct branch *branch = line->data;
5417 enum line_type type = branch->ref == &branch_all ? LINE_DEFAULT : get_line_type_from_ref(branch->ref);
5418
5419 if (draw_date(view, &branch->time))
5420 return TRUE;
5421
5422 if (draw_author(view, branch->author))
5423 return TRUE;
5424
5425 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
5426 return TRUE;
5427 }
5428
5429 static enum request
5430 branch_request(struct view *view, enum request request, struct line *line)
5431 {
5432 struct branch *branch = line->data;
5433
5434 switch (request) {
5435 case REQ_REFRESH:
5436 load_refs();
5437 refresh_view(view);
5438 return REQ_NONE;
5439
5440 case REQ_TOGGLE_SORT_FIELD:
5441 case REQ_TOGGLE_SORT_ORDER:
5442 sort_view(view, request, &branch_sort_state, branch_compare);
5443 return REQ_NONE;
5444
5445 case REQ_ENTER:
5446 {
5447 const struct ref *ref = branch->ref;
5448 const char *all_branches_argv[] = {
5449 "git", "log", ENCODING_ARG, "--no-color",
5450 "--pretty=raw", "--parents", opt_commit_order_arg,
5451 ref == &branch_all ? "--all" : ref->name, NULL
5452 };
5453 struct view *main_view = VIEW(REQ_VIEW_MAIN);
5454
5455 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
5456 return REQ_NONE;
5457 }
5458 case REQ_JUMP_COMMIT:
5459 {
5460 int lineno;
5461
5462 for (lineno = 0; lineno < view->lines; lineno++) {
5463 struct branch *branch = view->line[lineno].data;
5464
5465 if (!strncasecmp(branch->ref->id, opt_search, strlen(opt_search))) {
5466 select_view_line(view, lineno);
5467 report("");
5468 return REQ_NONE;
5469 }
5470 }
5471 }
5472 default:
5473 return request;
5474 }
5475 }
5476
5477 static bool
5478 branch_read(struct view *view, char *line)
5479 {
5480 struct branch_state *state = view->private;
5481 struct branch *reference;
5482 size_t i;
5483
5484 if (!line)
5485 return TRUE;
5486
5487 switch (get_line_type(line)) {
5488 case LINE_COMMIT:
5489 string_copy_rev(state->id, line + STRING_SIZE("commit "));
5490 return TRUE;
5491
5492 case LINE_AUTHOR:
5493 for (i = 0, reference = NULL; i < view->lines; i++) {
5494 struct branch *branch = view->line[i].data;
5495
5496 if (strcmp(branch->ref->id, state->id))
5497 continue;
5498
5499 view->line[i].dirty = TRUE;
5500 if (reference) {
5501 branch->author = reference->author;
5502 branch->time = reference->time;
5503 continue;
5504 }
5505
5506 parse_author_line(line + STRING_SIZE("author "),
5507 &branch->author, &branch->time);
5508 reference = branch;
5509 }
5510 return TRUE;
5511
5512 default:
5513 return TRUE;
5514 }
5515
5516 }
5517
5518 static bool
5519 branch_open_visitor(void *data, const struct ref *ref)
5520 {
5521 struct view *view = data;
5522 struct branch *branch;
5523
5524 if (ref->tag || ref->ltag)
5525 return TRUE;
5526
5527 branch = calloc(1, sizeof(*branch));
5528 if (!branch)
5529 return FALSE;
5530
5531 branch->ref = ref;
5532 return !!add_line_data(view, branch, LINE_DEFAULT);
5533 }
5534
5535 static bool
5536 branch_open(struct view *view, enum open_flags flags)
5537 {
5538 const char *branch_log[] = {
5539 "git", "log", ENCODING_ARG, "--no-color", "--pretty=raw",
5540 "--simplify-by-decoration", "--all", NULL
5541 };
5542
5543 if (!begin_update(view, NULL, branch_log, OPEN_RELOAD)) {
5544 report("Failed to load branch data");
5545 return TRUE;
5546 }
5547
5548 branch_open_visitor(view, &branch_all);
5549 foreach_ref(branch_open_visitor, view);
5550
5551 return TRUE;
5552 }
5553
5554 static bool
5555 branch_grep(struct view *view, struct line *line)
5556 {
5557 struct branch *branch = line->data;
5558 const char *text[] = {
5559 branch->ref->name,
5560 mkauthor(branch->author, opt_author_cols, opt_author),
5561 NULL
5562 };
5563
5564 return grep_text(view, text);
5565 }
5566
5567 static void
5568 branch_select(struct view *view, struct line *line)
5569 {
5570 struct branch *branch = line->data;
5571
5572 string_copy_rev(view->ref, branch->ref->id);
5573 string_copy_rev(ref_commit, branch->ref->id);
5574 string_copy_rev(ref_head, branch->ref->id);
5575 string_copy_rev(ref_branch, branch->ref->name);
5576 }
5577
5578 static struct view_ops branch_ops = {
5579 "branch",
5580 VIEW_NO_FLAGS,
5581 sizeof(struct branch_state),
5582 branch_open,
5583 branch_read,
5584 branch_draw,
5585 branch_request,
5586 branch_grep,
5587 branch_select,
5588 };
5589
5590 /*
5591 * Status backend
5592 */
5593
5594 struct status {
5595 char status;
5596 struct {
5597 mode_t mode;
5598 char rev[SIZEOF_REV];
5599 char name[SIZEOF_STR];
5600 } old;
5601 struct {
5602 mode_t mode;
5603 char rev[SIZEOF_REV];
5604 char name[SIZEOF_STR];
5605 } new;
5606 };
5607
5608 static char status_onbranch[SIZEOF_STR];
5609 static struct status stage_status;
5610 static enum line_type stage_line_type;
5611
5612 DEFINE_ALLOCATOR(realloc_ints, int, 32)
5613
5614 /* This should work even for the "On branch" line. */
5615 static inline bool
5616 status_has_none(struct view *view, struct line *line)
5617 {
5618 return line < view->line + view->lines && !line[1].data;
5619 }
5620
5621 /* Get fields from the diff line:
5622 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
5623 */
5624 static inline bool
5625 status_get_diff(struct status *file, const char *buf, size_t bufsize)
5626 {
5627 const char *old_mode = buf + 1;
5628 const char *new_mode = buf + 8;
5629 const char *old_rev = buf + 15;
5630 const char *new_rev = buf + 56;
5631 const char *status = buf + 97;
5632
5633 if (bufsize < 98 ||
5634 old_mode[-1] != ':' ||
5635 new_mode[-1] != ' ' ||
5636 old_rev[-1] != ' ' ||
5637 new_rev[-1] != ' ' ||
5638 status[-1] != ' ')
5639 return FALSE;
5640
5641 file->status = *status;
5642
5643 string_copy_rev(file->old.rev, old_rev);
5644 string_copy_rev(file->new.rev, new_rev);
5645
5646 file->old.mode = strtoul(old_mode, NULL, 8);
5647 file->new.mode = strtoul(new_mode, NULL, 8);
5648
5649 file->old.name[0] = file->new.name[0] = 0;
5650
5651 return TRUE;
5652 }
5653
5654 static bool
5655 status_run(struct view *view, const char *argv[], char status, enum line_type type)
5656 {
5657 struct status *unmerged = NULL;
5658 char *buf;
5659 struct io io;
5660
5661 if (!io_run(&io, IO_RD, opt_cdup, argv))
5662 return FALSE;
5663
5664 add_line_data(view, NULL, type);
5665
5666 while ((buf = io_get(&io, 0, TRUE))) {
5667 struct status *file = unmerged;
5668
5669 if (!file) {
5670 file = calloc(1, sizeof(*file));
5671 if (!file || !add_line_data(view, file, type))
5672 goto error_out;
5673 }
5674
5675 /* Parse diff info part. */
5676 if (status) {
5677 file->status = status;
5678 if (status == 'A')
5679 string_copy(file->old.rev, NULL_ID);
5680
5681 } else if (!file->status || file == unmerged) {
5682 if (!status_get_diff(file, buf, strlen(buf)))
5683 goto error_out;
5684
5685 buf = io_get(&io, 0, TRUE);
5686 if (!buf)
5687 break;
5688
5689 /* Collapse all modified entries that follow an
5690 * associated unmerged entry. */
5691 if (unmerged == file) {
5692 unmerged->status = 'U';
5693 unmerged = NULL;
5694 } else if (file->status == 'U') {
5695 unmerged = file;
5696 }
5697 }
5698
5699 /* Grab the old name for rename/copy. */
5700 if (!*file->old.name &&
5701 (file->status == 'R' || file->status == 'C')) {
5702 string_ncopy(file->old.name, buf, strlen(buf));
5703
5704 buf = io_get(&io, 0, TRUE);
5705 if (!buf)
5706 break;
5707 }
5708
5709 /* git-ls-files just delivers a NUL separated list of
5710 * file names similar to the second half of the
5711 * git-diff-* output. */
5712 string_ncopy(file->new.name, buf, strlen(buf));
5713 if (!*file->old.name)
5714 string_copy(file->old.name, file->new.name);
5715 file = NULL;
5716 }
5717
5718 if (io_error(&io)) {
5719 error_out:
5720 io_done(&io);
5721 return FALSE;
5722 }
5723
5724 if (!view->line[view->lines - 1].data)
5725 add_line_data(view, NULL, LINE_STAT_NONE);
5726
5727 io_done(&io);
5728 return TRUE;
5729 }
5730
5731 static const char *status_diff_index_argv[] = { GIT_DIFF_STAGED_FILES("-z") };
5732 static const char *status_diff_files_argv[] = { GIT_DIFF_UNSTAGED_FILES("-z") };
5733
5734 static const char *status_list_other_argv[] = {
5735 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
5736 };
5737
5738 static const char *status_list_no_head_argv[] = {
5739 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
5740 };
5741
5742 static const char *update_index_argv[] = {
5743 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
5744 };
5745
5746 /* Restore the previous line number to stay in the context or select a
5747 * line with something that can be updated. */
5748 static void
5749 status_restore(struct view *view)
5750 {
5751 if (view->prev_pos.lineno >= view->lines)
5752 view->prev_pos.lineno = view->lines - 1;
5753 while (view->prev_pos.lineno < view->lines && !view->line[view->prev_pos.lineno].data)
5754 view->prev_pos.lineno++;
5755 while (view->prev_pos.lineno > 0 && !view->line[view->prev_pos.lineno].data)
5756 view->prev_pos.lineno--;
5757
5758 /* If the above fails, always skip the "On branch" line. */
5759 if (view->prev_pos.lineno < view->lines)
5760 view->pos.lineno = view->prev_pos.lineno;
5761 else
5762 view->pos.lineno = 1;
5763
5764 if (view->prev_pos.offset > view->pos.lineno)
5765 view->pos.offset = view->pos.lineno;
5766 else if (view->prev_pos.offset < view->lines)
5767 view->pos.offset = view->prev_pos.offset;
5768
5769 clear_position(&view->prev_pos);
5770 }
5771
5772 static void
5773 status_update_onbranch(void)
5774 {
5775 static const char *paths[][2] = {
5776 { "rebase-apply/rebasing", "Rebasing" },
5777 { "rebase-apply/applying", "Applying mailbox" },
5778 { "rebase-apply/", "Rebasing mailbox" },
5779 { "rebase-merge/interactive", "Interactive rebase" },
5780 { "rebase-merge/", "Rebase merge" },
5781 { "MERGE_HEAD", "Merging" },
5782 { "BISECT_LOG", "Bisecting" },
5783 { "HEAD", "On branch" },
5784 };
5785 char buf[SIZEOF_STR];
5786 struct stat stat;
5787 int i;
5788
5789 if (is_initial_commit()) {
5790 string_copy(status_onbranch, "Initial commit");
5791 return;
5792 }
5793
5794 for (i = 0; i < ARRAY_SIZE(paths); i++) {
5795 char *head = opt_head;
5796
5797 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
5798 lstat(buf, &stat) < 0)
5799 continue;
5800
5801 if (!*opt_head) {
5802 struct io io;
5803
5804 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
5805 io_read_buf(&io, buf, sizeof(buf))) {
5806 head = buf;
5807 if (!prefixcmp(head, "refs/heads/"))
5808 head += STRING_SIZE("refs/heads/");
5809 }
5810 }
5811
5812 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
5813 string_copy(status_onbranch, opt_head);
5814 return;
5815 }
5816
5817 string_copy(status_onbranch, "Not currently on any branch");
5818 }
5819
5820 /* First parse staged info using git-diff-index(1), then parse unstaged
5821 * info using git-diff-files(1), and finally untracked files using
5822 * git-ls-files(1). */
5823 static bool
5824 status_open(struct view *view, enum open_flags flags)
5825 {
5826 reset_view(view);
5827
5828 add_line_data(view, NULL, LINE_STAT_HEAD);
5829 status_update_onbranch();
5830
5831 io_run_bg(update_index_argv);
5832
5833 if (is_initial_commit()) {
5834 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
5835 return FALSE;
5836 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
5837 return FALSE;
5838 }
5839
5840 if (!opt_untracked_dirs_content)
5841 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
5842
5843 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
5844 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
5845 return FALSE;
5846
5847 /* Restore the exact position or use the specialized restore
5848 * mode? */
5849 status_restore(view);
5850 return TRUE;
5851 }
5852
5853 static bool
5854 status_draw(struct view *view, struct line *line, unsigned int lineno)
5855 {
5856 struct status *status = line->data;
5857 enum line_type type;
5858 const char *text;
5859
5860 if (!status) {
5861 switch (line->type) {
5862 case LINE_STAT_STAGED:
5863 type = LINE_STAT_SECTION;
5864 text = "Changes to be committed:";
5865 break;
5866
5867 case LINE_STAT_UNSTAGED:
5868 type = LINE_STAT_SECTION;
5869 text = "Changed but not updated:";
5870 break;
5871
5872 case LINE_STAT_UNTRACKED:
5873 type = LINE_STAT_SECTION;
5874 text = "Untracked files:";
5875 break;
5876
5877 case LINE_STAT_NONE:
5878 type = LINE_DEFAULT;
5879 text = " (no files)";
5880 break;
5881
5882 case LINE_STAT_HEAD:
5883 type = LINE_STAT_HEAD;
5884 text = status_onbranch;
5885 break;
5886
5887 default:
5888 return FALSE;
5889 }
5890 } else {
5891 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5892
5893 buf[0] = status->status;
5894 if (draw_text(view, line->type, buf))
5895 return TRUE;
5896 type = LINE_DEFAULT;
5897 text = status->new.name;
5898 }
5899
5900 draw_text(view, type, text);
5901 return TRUE;
5902 }
5903
5904 static enum request
5905 status_enter(struct view *view, struct line *line)
5906 {
5907 struct status *status = line->data;
5908 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5909
5910 if (line->type == LINE_STAT_NONE ||
5911 (!status && line[1].type == LINE_STAT_NONE)) {
5912 report("No file to diff");
5913 return REQ_NONE;
5914 }
5915
5916 switch (line->type) {
5917 case LINE_STAT_STAGED:
5918 case LINE_STAT_UNSTAGED:
5919 break;
5920
5921 case LINE_STAT_UNTRACKED:
5922 if (!status) {
5923 report("No file to show");
5924 return REQ_NONE;
5925 }
5926
5927 if (!suffixcmp(status->new.name, -1, "/")) {
5928 report("Cannot display a directory");
5929 return REQ_NONE;
5930 }
5931 break;
5932
5933 case LINE_STAT_HEAD:
5934 return REQ_NONE;
5935
5936 default:
5937 die("line type %d not handled in switch", line->type);
5938 }
5939
5940 if (status) {
5941 stage_status = *status;
5942 } else {
5943 memset(&stage_status, 0, sizeof(stage_status));
5944 }
5945
5946 stage_line_type = line->type;
5947
5948 open_view(view, REQ_VIEW_STAGE, flags);
5949 return REQ_NONE;
5950 }
5951
5952 static bool
5953 status_exists(struct view *view, struct status *status, enum line_type type)
5954 {
5955 unsigned long lineno;
5956
5957 for (lineno = 0; lineno < view->lines; lineno++) {
5958 struct line *line = &view->line[lineno];
5959 struct status *pos = line->data;
5960
5961 if (line->type != type)
5962 continue;
5963 if (!pos && (!status || !status->status) && line[1].data) {
5964 select_view_line(view, lineno);
5965 return TRUE;
5966 }
5967 if (pos && !strcmp(status->new.name, pos->new.name)) {
5968 select_view_line(view, lineno);
5969 return TRUE;
5970 }
5971 }
5972
5973 return FALSE;
5974 }
5975
5976
5977 static bool
5978 status_update_prepare(struct io *io, enum line_type type)
5979 {
5980 const char *staged_argv[] = {
5981 "git", "update-index", "-z", "--index-info", NULL
5982 };
5983 const char *others_argv[] = {
5984 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5985 };
5986
5987 switch (type) {
5988 case LINE_STAT_STAGED:
5989 return io_run(io, IO_WR, opt_cdup, staged_argv);
5990
5991 case LINE_STAT_UNSTAGED:
5992 case LINE_STAT_UNTRACKED:
5993 return io_run(io, IO_WR, opt_cdup, others_argv);
5994
5995 default:
5996 die("line type %d not handled in switch", type);
5997 return FALSE;
5998 }
5999 }
6000
6001 static bool
6002 status_update_write(struct io *io, struct status *status, enum line_type type)
6003 {
6004 switch (type) {
6005 case LINE_STAT_STAGED:
6006 return io_printf(io, "%06o %s\t%s%c", status->old.mode,
6007 status->old.rev, status->old.name, 0);
6008
6009 case LINE_STAT_UNSTAGED:
6010 case LINE_STAT_UNTRACKED:
6011 return io_printf(io, "%s%c", status->new.name, 0);
6012
6013 default:
6014 die("line type %d not handled in switch", type);
6015 return FALSE;
6016 }
6017 }
6018
6019 static bool
6020 status_update_file(struct status *status, enum line_type type)
6021 {
6022 struct io io;
6023 bool result;
6024
6025 if (!status_update_prepare(&io, type))
6026 return FALSE;
6027
6028 result = status_update_write(&io, status, type);
6029 return io_done(&io) && result;
6030 }
6031
6032 static bool
6033 status_update_files(struct view *view, struct line *line)
6034 {
6035 char buf[sizeof(view->ref)];
6036 struct io io;
6037 bool result = TRUE;
6038 struct line *pos = view->line + view->lines;
6039 int files = 0;
6040 int file, done;
6041 int cursor_y = -1, cursor_x = -1;
6042
6043 if (!status_update_prepare(&io, line->type))
6044 return FALSE;
6045
6046 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
6047 files++;
6048
6049 string_copy(buf, view->ref);
6050 getsyx(cursor_y, cursor_x);
6051 for (file = 0, done = 5; result && file < files; line++, file++) {
6052 int almost_done = file * 100 / files;
6053
6054 if (almost_done > done) {
6055 done = almost_done;
6056 string_format(view->ref, "updating file %u of %u (%d%% done)",
6057 file, files, done);
6058 update_view_title(view);
6059 setsyx(cursor_y, cursor_x);
6060 doupdate();
6061 }
6062 result = status_update_write(&io, line->data, line->type);
6063 }
6064 string_copy(view->ref, buf);
6065
6066 return io_done(&io) && result;
6067 }
6068
6069 static bool
6070 status_update(struct view *view)
6071 {
6072 struct line *line = &view->line[view->pos.lineno];
6073
6074 assert(view->lines);
6075
6076 if (!line->data) {
6077 /* This should work even for the "On branch" line. */
6078 if (line < view->line + view->lines && !line[1].data) {
6079 report("Nothing to update");
6080 return FALSE;
6081 }
6082
6083 if (!status_update_files(view, line + 1)) {
6084 report("Failed to update file status");
6085 return FALSE;
6086 }
6087
6088 } else if (!status_update_file(line->data, line->type)) {
6089 report("Failed to update file status");
6090 return FALSE;
6091 }
6092
6093 return TRUE;
6094 }
6095
6096 static bool
6097 status_revert(struct status *status, enum line_type type, bool has_none)
6098 {
6099 if (!status || type != LINE_STAT_UNSTAGED) {
6100 if (type == LINE_STAT_STAGED) {
6101 report("Cannot revert changes to staged files");
6102 } else if (type == LINE_STAT_UNTRACKED) {
6103 report("Cannot revert changes to untracked files");
6104 } else if (has_none) {
6105 report("Nothing to revert");
6106 } else {
6107 report("Cannot revert changes to multiple files");
6108 }
6109
6110 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
6111 char mode[10] = "100644";
6112 const char *reset_argv[] = {
6113 "git", "update-index", "--cacheinfo", mode,
6114 status->old.rev, status->old.name, NULL
6115 };
6116 const char *checkout_argv[] = {
6117 "git", "checkout", "--", status->old.name, NULL
6118 };
6119
6120 if (status->status == 'U') {
6121 string_format(mode, "%5o", status->old.mode);
6122
6123 if (status->old.mode == 0 && status->new.mode == 0) {
6124 reset_argv[2] = "--force-remove";
6125 reset_argv[3] = status->old.name;
6126 reset_argv[4] = NULL;
6127 }
6128
6129 if (!io_run_fg(reset_argv, opt_cdup))
6130 return FALSE;
6131 if (status->old.mode == 0 && status->new.mode == 0)
6132 return TRUE;
6133 }
6134
6135 return io_run_fg(checkout_argv, opt_cdup);
6136 }
6137
6138 return FALSE;
6139 }
6140
6141 static enum request
6142 status_request(struct view *view, enum request request, struct line *line)
6143 {
6144 struct status *status = line->data;
6145
6146 switch (request) {
6147 case REQ_STATUS_UPDATE:
6148 if (!status_update(view))
6149 return REQ_NONE;
6150 break;
6151
6152 case REQ_STATUS_REVERT:
6153 if (!status_revert(status, line->type, status_has_none(view, line)))
6154 return REQ_NONE;
6155 break;
6156
6157 case REQ_STATUS_MERGE:
6158 if (!status || status->status != 'U') {
6159 report("Merging only possible for files with unmerged status ('U').");
6160 return REQ_NONE;
6161 }
6162 open_mergetool(status->new.name);
6163 break;
6164
6165 case REQ_EDIT:
6166 if (!status)
6167 return request;
6168 if (status->status == 'D') {
6169 report("File has been deleted.");
6170 return REQ_NONE;
6171 }
6172
6173 open_editor(status->new.name);
6174 break;
6175
6176 case REQ_VIEW_BLAME:
6177 if (status)
6178 opt_ref[0] = 0;
6179 return request;
6180
6181 case REQ_ENTER:
6182 /* After returning the status view has been split to
6183 * show the stage view. No further reloading is
6184 * necessary. */
6185 return status_enter(view, line);
6186
6187 case REQ_REFRESH:
6188 /* Simply reload the view. */
6189 break;
6190
6191 default:
6192 return request;
6193 }
6194
6195 refresh_view(view);
6196
6197 return REQ_NONE;
6198 }
6199
6200 static void
6201 status_select(struct view *view, struct line *line)
6202 {
6203 struct status *status = line->data;
6204 char file[SIZEOF_STR] = "all files";
6205 const char *text;
6206 const char *key;
6207
6208 if (status && !string_format(file, "'%s'", status->new.name))
6209 return;
6210
6211 if (!status && line[1].type == LINE_STAT_NONE)
6212 line++;
6213
6214 switch (line->type) {
6215 case LINE_STAT_STAGED:
6216 text = "Press %s to unstage %s for commit";
6217 break;
6218
6219 case LINE_STAT_UNSTAGED:
6220 text = "Press %s to stage %s for commit";
6221 break;
6222
6223 case LINE_STAT_UNTRACKED:
6224 text = "Press %s to stage %s for addition";
6225 break;
6226
6227 case LINE_STAT_HEAD:
6228 case LINE_STAT_NONE:
6229 text = "Nothing to update";
6230 break;
6231
6232 default:
6233 die("line type %d not handled in switch", line->type);
6234 }
6235
6236 if (status && status->status == 'U') {
6237 text = "Press %s to resolve conflict in %s";
6238 key = get_view_key(view, REQ_STATUS_MERGE);
6239
6240 } else {
6241 key = get_view_key(view, REQ_STATUS_UPDATE);
6242 }
6243
6244 string_format(view->ref, text, key, file);
6245 if (status)
6246 string_copy(opt_file, status->new.name);
6247 }
6248
6249 static bool
6250 status_grep(struct view *view, struct line *line)
6251 {
6252 struct status *status = line->data;
6253
6254 if (status) {
6255 const char buf[2] = { status->status, 0 };
6256 const char *text[] = { status->new.name, buf, NULL };
6257
6258 return grep_text(view, text);
6259 }
6260
6261 return FALSE;
6262 }
6263
6264 static struct view_ops status_ops = {
6265 "file",
6266 VIEW_CUSTOM_STATUS,
6267 0,
6268 status_open,
6269 NULL,
6270 status_draw,
6271 status_request,
6272 status_grep,
6273 status_select,
6274 };
6275
6276
6277 struct stage_state {
6278 struct diff_state diff;
6279 size_t chunks;
6280 int *chunk;
6281 };
6282
6283 static bool
6284 stage_diff_write(struct io *io, struct line *line, struct line *end)
6285 {
6286 while (line < end) {
6287 if (!io_write(io, line->data, strlen(line->data)) ||
6288 !io_write(io, "\n", 1))
6289 return FALSE;
6290 line++;
6291 if (line->type == LINE_DIFF_CHUNK ||
6292 line->type == LINE_DIFF_HEADER)
6293 break;
6294 }
6295
6296 return TRUE;
6297 }
6298
6299 static bool
6300 stage_apply_chunk(struct view *view, struct line *chunk, struct line *line, bool revert)
6301 {
6302 const char *apply_argv[SIZEOF_ARG] = {
6303 "git", "apply", "--whitespace=nowarn", NULL
6304 };
6305 struct line *diff_hdr;
6306 struct io io;
6307 int argc = 3;
6308
6309 diff_hdr = find_prev_line_by_type(view, chunk, LINE_DIFF_HEADER);
6310 if (!diff_hdr)
6311 return FALSE;
6312
6313 if (!revert)
6314 apply_argv[argc++] = "--cached";
6315 if (line != NULL)
6316 apply_argv[argc++] = "--unidiff-zero";
6317 if (revert || stage_line_type == LINE_STAT_STAGED)
6318 apply_argv[argc++] = "-R";
6319 apply_argv[argc++] = "-";
6320 apply_argv[argc++] = NULL;
6321 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
6322 return FALSE;
6323
6324 if (line != NULL) {
6325 int lineno = 0;
6326 struct line *context = chunk + 1;
6327 const char *markers[] = {
6328 line->type == LINE_DIFF_DEL ? "" : ",0",
6329 line->type == LINE_DIFF_DEL ? ",0" : "",
6330 };
6331
6332 parse_chunk_lineno(&lineno, chunk->data, line->type == LINE_DIFF_DEL ? '+' : '-');
6333
6334 while (context < line) {
6335 if (context->type == LINE_DIFF_CHUNK || context->type == LINE_DIFF_HEADER) {
6336 break;
6337 } else if (context->type != LINE_DIFF_DEL && context->type != LINE_DIFF_ADD) {
6338 lineno++;
6339 }
6340 context++;
6341 }
6342
6343 if (!stage_diff_write(&io, diff_hdr, chunk) ||
6344 !io_printf(&io, "@@ -%d%s +%d%s @@\n",
6345 lineno, markers[0], lineno, markers[1]) ||
6346 !stage_diff_write(&io, line, line + 1)) {
6347 chunk = NULL;
6348 }
6349 } else {
6350 if (!stage_diff_write(&io, diff_hdr, chunk) ||
6351 !stage_diff_write(&io, chunk, view->line + view->lines))
6352 chunk = NULL;
6353 }
6354
6355 io_done(&io);
6356 io_run_bg(update_index_argv);
6357
6358 return chunk ? TRUE : FALSE;
6359 }
6360
6361 static bool
6362 stage_update(struct view *view, struct line *line, bool single)
6363 {
6364 struct line *chunk = NULL;
6365
6366 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
6367 chunk = find_prev_line_by_type(view, line, LINE_DIFF_CHUNK);
6368
6369 if (chunk) {
6370 if (!stage_apply_chunk(view, chunk, single ? line : NULL, FALSE)) {
6371 report("Failed to apply chunk");
6372 return FALSE;
6373 }
6374
6375 } else if (!stage_status.status) {
6376 view = view->parent;
6377
6378 for (line = view->line; line < view->line + view->lines; line++)
6379 if (line->type == stage_line_type)
6380 break;
6381
6382 if (!status_update_files(view, line + 1)) {
6383 report("Failed to update files");
6384 return FALSE;
6385 }
6386
6387 } else if (!status_update_file(&stage_status, stage_line_type)) {
6388 report("Failed to update file");
6389 return FALSE;
6390 }
6391
6392 return TRUE;
6393 }
6394
6395 static bool
6396 stage_revert(struct view *view, struct line *line)
6397 {
6398 struct line *chunk = NULL;
6399
6400 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
6401 chunk = find_prev_line_by_type(view, line, LINE_DIFF_CHUNK);
6402
6403 if (chunk) {
6404 if (!prompt_yesno("Are you sure you want to revert changes?"))
6405 return FALSE;
6406
6407 if (!stage_apply_chunk(view, chunk, NULL, TRUE)) {
6408 report("Failed to revert chunk");
6409 return FALSE;
6410 }
6411 return TRUE;
6412
6413 } else {
6414 return status_revert(stage_status.status ? &stage_status : NULL,
6415 stage_line_type, FALSE);
6416 }
6417 }
6418
6419
6420 static void
6421 stage_next(struct view *view, struct line *line)
6422 {
6423 struct stage_state *state = view->private;
6424 int i;
6425
6426 if (!state->chunks) {
6427 for (line = view->line; line < view->line + view->lines; line++) {
6428 if (line->type != LINE_DIFF_CHUNK)
6429 continue;
6430
6431 if (!realloc_ints(&state->chunk, state->chunks, 1)) {
6432 report("Allocation failure");
6433 return;
6434 }
6435
6436 state->chunk[state->chunks++] = line - view->line;
6437 }
6438 }
6439
6440 for (i = 0; i < state->chunks; i++) {
6441 if (state->chunk[i] > view->pos.lineno) {
6442 do_scroll_view(view, state->chunk[i] - view->pos.lineno);
6443 report("Chunk %d of %d", i + 1, state->chunks);
6444 return;
6445 }
6446 }
6447
6448 report("No next chunk found");
6449 }
6450
6451 static enum request
6452 stage_request(struct view *view, enum request request, struct line *line)
6453 {
6454 switch (request) {
6455 case REQ_STATUS_UPDATE:
6456 if (!stage_update(view, line, FALSE))
6457 return REQ_NONE;
6458 break;
6459
6460 case REQ_STATUS_REVERT:
6461 if (!stage_revert(view, line))
6462 return REQ_NONE;
6463 break;
6464
6465 case REQ_STAGE_UPDATE_LINE:
6466 if (stage_line_type == LINE_STAT_UNTRACKED ||
6467 stage_status.status == 'A') {
6468 report("Staging single lines is not supported for new files");
6469 return REQ_NONE;
6470 }
6471 if (line->type != LINE_DIFF_DEL && line->type != LINE_DIFF_ADD) {
6472 report("Please select a change to stage");
6473 return REQ_NONE;
6474 }
6475 if (!stage_update(view, line, TRUE))
6476 return REQ_NONE;
6477 break;
6478
6479 case REQ_STAGE_NEXT:
6480 if (stage_line_type == LINE_STAT_UNTRACKED) {
6481 report("File is untracked; press %s to add",
6482 get_view_key(view, REQ_STATUS_UPDATE));
6483 return REQ_NONE;
6484 }
6485 stage_next(view, line);
6486 return REQ_NONE;
6487
6488 case REQ_EDIT:
6489 if (!stage_status.new.name[0])
6490 return request;
6491 if (stage_status.status == 'D') {
6492 report("File has been deleted.");
6493 return REQ_NONE;
6494 }
6495
6496 open_editor(stage_status.new.name);
6497 break;
6498
6499 case REQ_REFRESH:
6500 /* Reload everything ... */
6501 break;
6502
6503 case REQ_VIEW_BLAME:
6504 if (stage_status.new.name[0]) {
6505 string_copy(opt_file, stage_status.new.name);
6506 opt_ref[0] = 0;
6507 }
6508 return request;
6509
6510 case REQ_ENTER:
6511 return diff_common_enter(view, request, line);
6512
6513 case REQ_DIFF_CONTEXT_UP:
6514 case REQ_DIFF_CONTEXT_DOWN:
6515 if (!update_diff_context(request))
6516 return REQ_NONE;
6517 break;
6518
6519 default:
6520 return request;
6521 }
6522
6523 refresh_view(view->parent);
6524
6525 /* Check whether the staged entry still exists, and close the
6526 * stage view if it doesn't. */
6527 if (!status_exists(view->parent, &stage_status, stage_line_type)) {
6528 status_restore(view->parent);
6529 return REQ_VIEW_CLOSE;
6530 }
6531
6532 refresh_view(view);
6533
6534 return REQ_NONE;
6535 }
6536
6537 static bool
6538 stage_open(struct view *view, enum open_flags flags)
6539 {
6540 static const char *no_head_diff_argv[] = {
6541 GIT_DIFF_STAGED_INITIAL(opt_diff_context_arg, opt_ignore_space_arg,
6542 stage_status.new.name)
6543 };
6544 static const char *index_show_argv[] = {
6545 GIT_DIFF_STAGED(opt_diff_context_arg, opt_ignore_space_arg,
6546 stage_status.old.name, stage_status.new.name)
6547 };
6548 static const char *files_show_argv[] = {
6549 GIT_DIFF_UNSTAGED(opt_diff_context_arg, opt_ignore_space_arg,
6550 stage_status.old.name, stage_status.new.name)
6551 };
6552 /* Diffs for unmerged entries are empty when passing the new
6553 * path, so leave out the new path. */
6554 static const char *files_unmerged_argv[] = {
6555 "git", "diff-files", ENCODING_ARG, "--root", "--patch-with-stat", "-C", "-M",
6556 opt_diff_context_arg, opt_ignore_space_arg, "--",
6557 stage_status.old.name, NULL
6558 };
6559 static const char *file_argv[] = { opt_cdup, stage_status.new.name, NULL };
6560 const char **argv = NULL;
6561 const char *info;
6562
6563 view->encoding = NULL;
6564
6565 switch (stage_line_type) {
6566 case LINE_STAT_STAGED:
6567 if (is_initial_commit()) {
6568 argv = no_head_diff_argv;
6569 } else {
6570 argv = index_show_argv;
6571 }
6572 if (stage_status.status)
6573 info = "Staged changes to %s";
6574 else
6575 info = "Staged changes";
6576 break;
6577
6578 case LINE_STAT_UNSTAGED:
6579 if (stage_status.status != 'U')
6580 argv = files_show_argv;
6581 else
6582 argv = files_unmerged_argv;
6583 if (stage_status.status)
6584 info = "Unstaged changes to %s";
6585 else
6586 info = "Unstaged changes";
6587 break;
6588
6589 case LINE_STAT_UNTRACKED:
6590 info = "Untracked file %s";
6591 argv = file_argv;
6592 view->encoding = get_path_encoding(stage_status.old.name, opt_encoding);
6593 break;
6594
6595 case LINE_STAT_HEAD:
6596 default:
6597 die("line type %d not handled in switch", stage_line_type);
6598 }
6599
6600 string_format(view->ref, info, stage_status.new.name);
6601 view->vid[0] = 0;
6602 view->dir = opt_cdup;
6603 return argv_copy(&view->argv, argv)
6604 && begin_update(view, NULL, NULL, flags);
6605 }
6606
6607 static bool
6608 stage_read(struct view *view, char *data)
6609 {
6610 struct stage_state *state = view->private;
6611
6612 if (data && diff_common_read(view, data, &state->diff))
6613 return TRUE;
6614
6615 return pager_read(view, data);
6616 }
6617
6618 static struct view_ops stage_ops = {
6619 "line",
6620 VIEW_DIFF_LIKE,
6621 sizeof(struct stage_state),
6622 stage_open,
6623 stage_read,
6624 diff_common_draw,
6625 stage_request,
6626 pager_grep,
6627 pager_select,
6628 };
6629
6630
6631 /*
6632 * Revision graph
6633 */
6634
6635 static const enum line_type graph_colors[] = {
6636 LINE_PALETTE_0,
6637 LINE_PALETTE_1,
6638 LINE_PALETTE_2,
6639 LINE_PALETTE_3,
6640 LINE_PALETTE_4,
6641 LINE_PALETTE_5,
6642 LINE_PALETTE_6,
6643 };
6644
6645 static enum line_type get_graph_color(struct graph_symbol *symbol)
6646 {
6647 if (symbol->commit)
6648 return LINE_GRAPH_COMMIT;
6649 assert(symbol->color < ARRAY_SIZE(graph_colors));
6650 return graph_colors[symbol->color];
6651 }
6652
6653 static bool
6654 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
6655 {
6656 const char *chars = graph_symbol_to_utf8(symbol);
6657
6658 return draw_text(view, color, chars + !!first);
6659 }
6660
6661 static bool
6662 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
6663 {
6664 const char *chars = graph_symbol_to_ascii(symbol);
6665
6666 return draw_text(view, color, chars + !!first);
6667 }
6668
6669 static bool
6670 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
6671 {
6672 const chtype *chars = graph_symbol_to_chtype(symbol);
6673
6674 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
6675 }
6676
6677 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
6678
6679 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
6680 {
6681 static const draw_graph_fn fns[] = {
6682 draw_graph_ascii,
6683 draw_graph_chtype,
6684 draw_graph_utf8
6685 };
6686 draw_graph_fn fn = fns[opt_line_graphics];
6687 int i;
6688
6689 for (i = 0; i < canvas->size; i++) {
6690 struct graph_symbol *symbol = &canvas->symbols[i];
6691 enum line_type color = get_graph_color(symbol);
6692
6693 if (fn(view, symbol, color, i == 0))
6694 return TRUE;
6695 }
6696
6697 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
6698 }
6699
6700 /*
6701 * Main view backend
6702 */
6703
6704 struct commit {
6705 char id[SIZEOF_REV]; /* SHA1 ID. */
6706 char title[128]; /* First line of the commit message. */
6707 const char *author; /* Author of the commit. */
6708 struct time time; /* Date from the author ident. */
6709 struct ref_list *refs; /* Repository references. */
6710 struct graph_canvas graph; /* Ancestry chain graphics. */
6711 };
6712
6713 static struct commit *
6714 main_add_commit(struct view *view, enum line_type type, const char *ids, bool is_boundary)
6715 {
6716 struct graph *graph = view->private;
6717 struct commit *commit;
6718
6719 commit = calloc(1, sizeof(struct commit));
6720 if (!commit)
6721 return NULL;
6722
6723 string_copy_rev(commit->id, ids);
6724 commit->refs = get_ref_list(commit->id);
6725 add_line_data(view, commit, type);
6726 graph_add_commit(graph, &commit->graph, commit->id, ids, is_boundary);
6727 return commit;
6728 }
6729
6730 bool
6731 main_has_changes(const char *argv[])
6732 {
6733 struct io io;
6734
6735 if (!io_run(&io, IO_BG, NULL, argv, -1))
6736 return FALSE;
6737 io_done(&io);
6738 return io.status == 1;
6739 }
6740
6741 static void
6742 main_add_changes_commit(struct view *view, enum line_type type, const char *parent, const char *title)
6743 {
6744 char ids[SIZEOF_STR] = NULL_ID " ";
6745 struct graph *graph = view->private;
6746 struct commit *commit;
6747 struct timeval now;
6748 struct timezone tz;
6749
6750 if (!parent)
6751 return;
6752
6753 string_copy_rev(ids + STRING_SIZE(NULL_ID " "), parent);
6754
6755 commit = main_add_commit(view, type, ids, FALSE);
6756 if (!commit)
6757 return;
6758
6759 if (!gettimeofday(&now, &tz)) {
6760 commit->time.tz = tz.tz_minuteswest * 60;
6761 commit->time.sec = now.tv_sec - commit->time.tz;
6762 }
6763
6764 commit->author = "";
6765 string_ncopy(commit->title, title, strlen(title));
6766 graph_render_parents(graph);
6767 }
6768
6769 static void
6770 main_add_changes_commits(struct view *view, const char *parent)
6771 {
6772 const char *staged_argv[] = { GIT_DIFF_STAGED_FILES("--quiet") };
6773 const char *unstaged_argv[] = { GIT_DIFF_UNSTAGED_FILES("--quiet") };
6774 const char *staged_parent = NULL_ID;
6775 const char *unstaged_parent = parent;
6776
6777 if (!main_has_changes(unstaged_argv)) {
6778 unstaged_parent = NULL;
6779 staged_parent = parent;
6780 }
6781
6782 if (!main_has_changes(staged_argv)) {
6783 staged_parent = NULL;
6784 }
6785
6786 main_add_changes_commit(view, LINE_STAT_STAGED, staged_parent, "Staged changes");
6787 main_add_changes_commit(view, LINE_STAT_UNSTAGED, unstaged_parent, "Unstaged changes");
6788 }
6789
6790 static bool
6791 main_open(struct view *view, enum open_flags flags)
6792 {
6793 static const char *main_argv[] = {
6794 "git", "log", ENCODING_ARG, "--no-color", "--pretty=raw", "--parents",
6795 opt_commit_order_arg, "%(diffargs)", "%(revargs)",
6796 "--", "%(fileargs)", NULL
6797 };
6798
6799 return begin_update(view, NULL, main_argv, flags);
6800 }
6801
6802 static bool
6803 main_draw(struct view *view, struct line *line, unsigned int lineno)
6804 {
6805 struct commit *commit = line->data;
6806
6807 if (!commit->author)
6808 return FALSE;
6809
6810 if (draw_lineno(view, lineno))
6811 return TRUE;
6812
6813 if (draw_date(view, &commit->time))
6814 return TRUE;
6815
6816 if (draw_author(view, commit->author))
6817 return TRUE;
6818
6819 if (opt_rev_graph && draw_graph(view, &commit->graph))
6820 return TRUE;
6821
6822 if (draw_refs(view, commit->refs))
6823 return TRUE;
6824
6825 draw_text(view, LINE_DEFAULT, commit->title);
6826 return TRUE;
6827 }
6828
6829 /* Reads git log --pretty=raw output and parses it into the commit struct. */
6830 static bool
6831 main_read(struct view *view, char *line)
6832 {
6833 struct graph *graph = view->private;
6834 enum line_type type;
6835 struct commit *commit;
6836 static bool in_header;
6837
6838 if (!line) {
6839 if (!view->lines && !view->prev)
6840 die("No revisions match the given arguments.");
6841 if (view->lines > 0) {
6842 commit = view->line[view->lines - 1].data;
6843 view->line[view->lines - 1].dirty = 1;
6844 if (!commit->author) {
6845 view->lines--;
6846 free(commit);
6847 }
6848 }
6849
6850 done_graph(graph);
6851 return TRUE;
6852 }
6853
6854 type = get_line_type(line);
6855 if (type == LINE_COMMIT) {
6856 bool is_boundary;
6857
6858 in_header = TRUE;
6859 line += STRING_SIZE("commit ");
6860 is_boundary = *line == '-';
6861 if (is_boundary)
6862 line++;
6863
6864 if (opt_show_changes && opt_is_inside_work_tree && !view->lines)
6865 main_add_changes_commits(view, line);
6866
6867 return main_add_commit(view, LINE_MAIN_COMMIT, line, is_boundary) != NULL;
6868 }
6869
6870 if (!view->lines)
6871 return TRUE;
6872 commit = view->line[view->lines - 1].data;
6873
6874 /* Empty line separates the commit header from the log itself. */
6875 if (*line == '\0')
6876 in_header = FALSE;
6877
6878 switch (type) {
6879 case LINE_PARENT:
6880 if (!graph->has_parents)
6881 graph_add_parent(graph, line + STRING_SIZE("parent "));
6882 break;
6883
6884 case LINE_AUTHOR:
6885 parse_author_line(line + STRING_SIZE("author "),
6886 &commit->author, &commit->time);
6887 graph_render_parents(graph);
6888 break;
6889
6890 default:
6891 /* Fill in the commit title if it has not already been set. */
6892 if (commit->title[0])
6893 break;
6894
6895 /* Skip lines in the commit header. */
6896 if (in_header)
6897 break;
6898
6899 /* Require titles to start with a non-space character at the
6900 * offset used by git log. */
6901 if (strncmp(line, " ", 4))
6902 break;
6903 line += 4;
6904 /* Well, if the title starts with a whitespace character,
6905 * try to be forgiving. Otherwise we end up with no title. */
6906 while (isspace(*line))
6907 line++;
6908 if (*line == '\0')
6909 break;
6910 /* FIXME: More graceful handling of titles; append "..." to
6911 * shortened titles, etc. */
6912
6913 string_expand(commit->title, sizeof(commit->title), line, 1);
6914 view->line[view->lines - 1].dirty = 1;
6915 }
6916
6917 return TRUE;
6918 }
6919
6920 static enum request
6921 main_request(struct view *view, enum request request, struct line *line)
6922 {
6923 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
6924
6925 switch (request) {
6926 case REQ_NEXT:
6927 case REQ_PREVIOUS:
6928 if (view_is_displayed(view) && display[0] != view)
6929 return request;
6930 /* Do not pass navigation requests to the branch view
6931 * when the main view is maximized. (GH #38) */
6932 move_view(view, request);
6933 break;
6934
6935 case REQ_ENTER:
6936 if (view_is_displayed(view) && display[0] != view)
6937 maximize_view(view, TRUE);
6938
6939 if (line->type == LINE_STAT_UNSTAGED
6940 || line->type == LINE_STAT_STAGED) {
6941 struct view *diff = VIEW(REQ_VIEW_DIFF);
6942 const char *diff_staged_argv[] = {
6943 GIT_DIFF_STAGED(opt_diff_context_arg,
6944 opt_ignore_space_arg, NULL, NULL)
6945 };
6946 const char *diff_unstaged_argv[] = {
6947 GIT_DIFF_UNSTAGED(opt_diff_context_arg,
6948 opt_ignore_space_arg, NULL, NULL)
6949 };
6950 const char **diff_argv = line->type == LINE_STAT_STAGED
6951 ? diff_staged_argv : diff_unstaged_argv;
6952
6953 open_argv(view, diff, diff_argv, NULL, flags);
6954 break;
6955 }
6956
6957 open_view(view, REQ_VIEW_DIFF, flags);
6958 break;
6959 case REQ_REFRESH:
6960 load_refs();
6961 refresh_view(view);
6962 break;
6963
6964 case REQ_JUMP_COMMIT:
6965 {
6966 int lineno;
6967
6968 for (lineno = 0; lineno < view->lines; lineno++) {
6969 struct commit *commit = view->line[lineno].data;
6970
6971 if (!strncasecmp(commit->id, opt_search, strlen(opt_search))) {
6972 select_view_line(view, lineno);
6973 report("");
6974 return REQ_NONE;
6975 }
6976 }
6977
6978 report("Unable to find commit '%s'", opt_search);
6979 break;
6980 }
6981 default:
6982 return request;
6983 }
6984
6985 return REQ_NONE;
6986 }
6987
6988 static bool
6989 grep_refs(struct ref_list *list, regex_t *regex)
6990 {
6991 regmatch_t pmatch;
6992 size_t i;
6993
6994 if (!opt_show_refs || !list)
6995 return FALSE;
6996
6997 for (i = 0; i < list->size; i++) {
6998 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
6999 return TRUE;
7000 }
7001
7002 return FALSE;
7003 }
7004
7005 static bool
7006 main_grep(struct view *view, struct line *line)
7007 {
7008 struct commit *commit = line->data;
7009 const char *text[] = {
7010 commit->title,
7011 mkauthor(commit->author, opt_author_cols, opt_author),
7012 mkdate(&commit->time, opt_date),
7013 NULL
7014 };
7015
7016 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
7017 }
7018
7019 static void
7020 main_select(struct view *view, struct line *line)
7021 {
7022 struct commit *commit = line->data;
7023
7024 string_copy_rev(view->ref, commit->id);
7025 string_copy_rev(ref_commit, view->ref);
7026 }
7027
7028 static struct view_ops main_ops = {
7029 "commit",
7030 VIEW_NO_FLAGS,
7031 sizeof(struct graph),
7032 main_open,
7033 main_read,
7034 main_draw,
7035 main_request,
7036 main_grep,
7037 main_select,
7038 };
7039
7040
7041 /*
7042 * Status management
7043 */
7044
7045 /* Whether or not the curses interface has been initialized. */
7046 static bool cursed = FALSE;
7047
7048 /* Terminal hacks and workarounds. */
7049 static bool use_scroll_redrawwin;
7050 static bool use_scroll_status_wclear;
7051
7052 /* The status window is used for polling keystrokes. */
7053 static WINDOW *status_win;
7054
7055 /* Reading from the prompt? */
7056 static bool input_mode = FALSE;
7057
7058 static bool status_empty = FALSE;
7059
7060 /* Update status and title window. */
7061 static void
7062 report(const char *msg, ...)
7063 {
7064 struct view *view = display[current_view];
7065
7066 if (input_mode)
7067 return;
7068
7069 if (!view) {
7070 char buf[SIZEOF_STR];
7071 int retval;
7072
7073 FORMAT_BUFFER(buf, sizeof(buf), msg, retval, TRUE);
7074 die("%s", buf);
7075 }
7076
7077 if (!status_empty || *msg) {
7078 va_list args;
7079
7080 va_start(args, msg);
7081
7082 wmove(status_win, 0, 0);
7083 if (view->has_scrolled && use_scroll_status_wclear)
7084 wclear(status_win);
7085 if (*msg) {
7086 vwprintw(status_win, msg, args);
7087 status_empty = FALSE;
7088 } else {
7089 status_empty = TRUE;
7090 }
7091 wclrtoeol(status_win);
7092 wnoutrefresh(status_win);
7093
7094 va_end(args);
7095 }
7096
7097 update_view_title(view);
7098 }
7099
7100 static void
7101 init_display(void)
7102 {
7103 const char *term;
7104 int x, y;
7105
7106 /* Initialize the curses library */
7107 if (isatty(STDIN_FILENO)) {
7108 cursed = !!initscr();
7109 opt_tty = stdin;
7110 } else {
7111 /* Leave stdin and stdout alone when acting as a pager. */
7112 opt_tty = fopen("/dev/tty", "r+");
7113 if (!opt_tty)
7114 die("Failed to open /dev/tty");
7115 cursed = !!newterm(NULL, opt_tty, opt_tty);
7116 }
7117
7118 if (!cursed)
7119 die("Failed to initialize curses");
7120
7121 nonl(); /* Disable conversion and detect newlines from input. */
7122 cbreak(); /* Take input chars one at a time, no wait for \n */
7123 noecho(); /* Don't echo input */
7124 leaveok(stdscr, FALSE);
7125
7126 if (has_colors())
7127 init_colors();
7128
7129 getmaxyx(stdscr, y, x);
7130 status_win = newwin(1, x, y - 1, 0);
7131 if (!status_win)
7132 die("Failed to create status window");
7133
7134 /* Enable keyboard mapping */
7135 keypad(status_win, TRUE);
7136 wbkgdset(status_win, get_line_attr(LINE_STATUS));
7137
7138 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
7139 set_tabsize(opt_tab_size);
7140 #else
7141 TABSIZE = opt_tab_size;
7142 #endif
7143
7144 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
7145 if (term && !strcmp(term, "gnome-terminal")) {
7146 /* In the gnome-terminal-emulator, the message from
7147 * scrolling up one line when impossible followed by
7148 * scrolling down one line causes corruption of the
7149 * status line. This is fixed by calling wclear. */
7150 use_scroll_status_wclear = TRUE;
7151 use_scroll_redrawwin = FALSE;
7152
7153 } else if (term && !strcmp(term, "xrvt-xpm")) {
7154 /* No problems with full optimizations in xrvt-(unicode)
7155 * and aterm. */
7156 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
7157
7158 } else {
7159 /* When scrolling in (u)xterm the last line in the
7160 * scrolling direction will update slowly. */
7161 use_scroll_redrawwin = TRUE;
7162 use_scroll_status_wclear = FALSE;
7163 }
7164 }
7165
7166 static int
7167 get_input(int prompt_position)
7168 {
7169 struct view *view;
7170 int i, key, cursor_y, cursor_x;
7171
7172 if (prompt_position)
7173 input_mode = TRUE;
7174
7175 while (TRUE) {
7176 bool loading = FALSE;
7177
7178 foreach_view (view, i) {
7179 update_view(view);
7180 if (view_is_displayed(view) && view->has_scrolled &&
7181 use_scroll_redrawwin)
7182 redrawwin(view->win);
7183 view->has_scrolled = FALSE;
7184 if (view->pipe)
7185 loading = TRUE;
7186 }
7187
7188 /* Update the cursor position. */
7189 if (prompt_position) {
7190 getbegyx(status_win, cursor_y, cursor_x);
7191 cursor_x = prompt_position;
7192 } else {
7193 view = display[current_view];
7194 getbegyx(view->win, cursor_y, cursor_x);
7195 cursor_x = view->width - 1;
7196 cursor_y += view->pos.lineno - view->pos.offset;
7197 }
7198 setsyx(cursor_y, cursor_x);
7199
7200 /* Refresh, accept single keystroke of input */
7201 doupdate();
7202 nodelay(status_win, loading);
7203 key = wgetch(status_win);
7204
7205 /* wgetch() with nodelay() enabled returns ERR when
7206 * there's no input. */
7207 if (key == ERR) {
7208
7209 } else if (key == KEY_RESIZE) {
7210 int height, width;
7211
7212 getmaxyx(stdscr, height, width);
7213
7214 wresize(status_win, 1, width);
7215 mvwin(status_win, height - 1, 0);
7216 wnoutrefresh(status_win);
7217 resize_display();
7218 redraw_display(TRUE);
7219
7220 } else {
7221 input_mode = FALSE;
7222 if (key == erasechar())
7223 key = KEY_BACKSPACE;
7224 return key;
7225 }
7226 }
7227 }
7228
7229 static char *
7230 prompt_input(const char *prompt, input_handler handler, void *data)
7231 {
7232 enum input_status status = INPUT_OK;
7233 static char buf[SIZEOF_STR];
7234 size_t pos = 0;
7235
7236 buf[pos] = 0;
7237
7238 while (status == INPUT_OK || status == INPUT_SKIP) {
7239 int key;
7240
7241 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
7242 wclrtoeol(status_win);
7243
7244 key = get_input(pos + 1);
7245 switch (key) {
7246 case KEY_RETURN:
7247 case KEY_ENTER:
7248 case '\n':
7249 status = pos ? INPUT_STOP : INPUT_CANCEL;
7250 break;
7251
7252 case KEY_BACKSPACE:
7253 if (pos > 0)
7254 buf[--pos] = 0;
7255 else
7256 status = INPUT_CANCEL;
7257 break;
7258
7259 case KEY_ESC:
7260 status = INPUT_CANCEL;
7261 break;
7262
7263 default:
7264 if (pos >= sizeof(buf)) {
7265 report("Input string too long");
7266 return NULL;
7267 }
7268
7269 status = handler(data, buf, key);
7270 if (status == INPUT_OK)
7271 buf[pos++] = (char) key;
7272 }
7273 }
7274
7275 /* Clear the status window */
7276 status_empty = FALSE;
7277 report("");
7278
7279 if (status == INPUT_CANCEL)
7280 return NULL;
7281
7282 buf[pos++] = 0;
7283
7284 return buf;
7285 }
7286
7287 static enum input_status
7288 prompt_yesno_handler(void *data, char *buf, int c)
7289 {
7290 if (c == 'y' || c == 'Y')
7291 return INPUT_STOP;
7292 if (c == 'n' || c == 'N')
7293 return INPUT_CANCEL;
7294 return INPUT_SKIP;
7295 }
7296
7297 static bool
7298 prompt_yesno(const char *prompt)
7299 {
7300 char prompt2[SIZEOF_STR];
7301
7302 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
7303 return FALSE;
7304
7305 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
7306 }
7307
7308 static enum input_status
7309 read_prompt_handler(void *data, char *buf, int c)
7310 {
7311 return isprint(c) ? INPUT_OK : INPUT_SKIP;
7312 }
7313
7314 static char *
7315 read_prompt(const char *prompt)
7316 {
7317 return prompt_input(prompt, read_prompt_handler, NULL);
7318 }
7319
7320 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
7321 {
7322 enum input_status status = INPUT_OK;
7323 int size = 0;
7324
7325 while (items[size].text)
7326 size++;
7327
7328 while (status == INPUT_OK) {
7329 const struct menu_item *item = &items[*selected];
7330 int key;
7331 int i;
7332
7333 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
7334 prompt, *selected + 1, size);
7335 if (item->hotkey)
7336 wprintw(status_win, "[%c] ", (char) item->hotkey);
7337 wprintw(status_win, "%s", item->text);
7338 wclrtoeol(status_win);
7339
7340 key = get_input(COLS - 1);
7341 switch (key) {
7342 case KEY_RETURN:
7343 case KEY_ENTER:
7344 case '\n':
7345 status = INPUT_STOP;
7346 break;
7347
7348 case KEY_LEFT:
7349 case KEY_UP:
7350 *selected = *selected - 1;
7351 if (*selected < 0)
7352 *selected = size - 1;
7353 break;
7354
7355 case KEY_RIGHT:
7356 case KEY_DOWN:
7357 *selected = (*selected + 1) % size;
7358 break;
7359
7360 case KEY_ESC:
7361 status = INPUT_CANCEL;
7362 break;
7363
7364 default:
7365 for (i = 0; items[i].text; i++)
7366 if (items[i].hotkey == key) {
7367 *selected = i;
7368 status = INPUT_STOP;
7369 break;
7370 }
7371 }
7372 }
7373
7374 /* Clear the status window */
7375 status_empty = FALSE;
7376 report("");
7377
7378 return status != INPUT_CANCEL;
7379 }
7380
7381 /*
7382 * Repository properties
7383 */
7384
7385 static struct ref **refs = NULL;
7386 static size_t refs_size = 0;
7387 static struct ref *refs_head = NULL;
7388
7389 static struct ref_list **ref_lists = NULL;
7390 static size_t ref_lists_size = 0;
7391
7392 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
7393 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
7394 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
7395
7396 static int
7397 compare_refs(const void *ref1_, const void *ref2_)
7398 {
7399 const struct ref *ref1 = *(const struct ref **)ref1_;
7400 const struct ref *ref2 = *(const struct ref **)ref2_;
7401
7402 if (ref1->tag != ref2->tag)
7403 return ref2->tag - ref1->tag;
7404 if (ref1->ltag != ref2->ltag)
7405 return ref2->ltag - ref1->ltag;
7406 if (ref1->head != ref2->head)
7407 return ref2->head - ref1->head;
7408 if (ref1->tracked != ref2->tracked)
7409 return ref2->tracked - ref1->tracked;
7410 if (ref1->replace != ref2->replace)
7411 return ref2->replace - ref1->replace;
7412 /* Order remotes last. */
7413 if (ref1->remote != ref2->remote)
7414 return ref1->remote - ref2->remote;
7415 return strcmp(ref1->name, ref2->name);
7416 }
7417
7418 static void
7419 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
7420 {
7421 size_t i;
7422
7423 for (i = 0; i < refs_size; i++)
7424 if (!visitor(data, refs[i]))
7425 break;
7426 }
7427
7428 static struct ref *
7429 get_ref_head()
7430 {
7431 return refs_head;
7432 }
7433
7434 static struct ref_list *
7435 get_ref_list(const char *id)
7436 {
7437 struct ref_list *list;
7438 size_t i;
7439
7440 for (i = 0; i < ref_lists_size; i++)
7441 if (!strcmp(id, ref_lists[i]->id))
7442 return ref_lists[i];
7443
7444 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
7445 return NULL;
7446 list = calloc(1, sizeof(*list));
7447 if (!list)
7448 return NULL;
7449
7450 for (i = 0; i < refs_size; i++) {
7451 if (!strcmp(id, refs[i]->id) &&
7452 realloc_refs_list(&list->refs, list->size, 1))
7453 list->refs[list->size++] = refs[i];
7454 }
7455
7456 if (!list->refs) {
7457 free(list);
7458 return NULL;
7459 }
7460
7461 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
7462 ref_lists[ref_lists_size++] = list;
7463 return list;
7464 }
7465
7466 static int
7467 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
7468 {
7469 struct ref *ref = NULL;
7470 bool tag = FALSE;
7471 bool ltag = FALSE;
7472 bool remote = FALSE;
7473 bool replace = FALSE;
7474 bool tracked = FALSE;
7475 bool head = FALSE;
7476 int pos;
7477
7478 if (!prefixcmp(name, "refs/tags/")) {
7479 if (!suffixcmp(name, namelen, "^{}")) {
7480 namelen -= 3;
7481 name[namelen] = 0;
7482 } else {
7483 ltag = TRUE;
7484 }
7485
7486 tag = TRUE;
7487 namelen -= STRING_SIZE("refs/tags/");
7488 name += STRING_SIZE("refs/tags/");
7489
7490 } else if (!prefixcmp(name, "refs/remotes/")) {
7491 remote = TRUE;
7492 namelen -= STRING_SIZE("refs/remotes/");
7493 name += STRING_SIZE("refs/remotes/");
7494 tracked = !strcmp(opt_remote, name);
7495
7496 } else if (!prefixcmp(name, "refs/replace/")) {
7497 replace = TRUE;
7498 id = name + strlen("refs/replace/");
7499 idlen = namelen - strlen("refs/replace/");
7500 name = "replaced";
7501 namelen = strlen(name);
7502
7503 } else if (!prefixcmp(name, "refs/heads/")) {
7504 namelen -= STRING_SIZE("refs/heads/");
7505 name += STRING_SIZE("refs/heads/");
7506 if (strlen(opt_head) == namelen
7507 && !strncmp(opt_head, name, namelen))
7508 return OK;
7509
7510 } else if (!strcmp(name, "HEAD")) {
7511 head = TRUE;
7512 if (*opt_head) {
7513 namelen = strlen(opt_head);
7514 name = opt_head;
7515 }
7516 }
7517
7518 /* If we are reloading or it's an annotated tag, replace the
7519 * previous SHA1 with the resolved commit id; relies on the fact
7520 * git-ls-remote lists the commit id of an annotated tag right
7521 * before the commit id it points to. */
7522 for (pos = 0; pos < refs_size; pos++) {
7523 int cmp = replace ? strcmp(id, refs[pos]->id) : strcmp(name, refs[pos]->name);
7524
7525 if (!cmp) {
7526 ref = refs[pos];
7527 break;
7528 }
7529 }
7530
7531 if (!ref) {
7532 if (!realloc_refs(&refs, refs_size, 1))
7533 return ERR;
7534 ref = calloc(1, sizeof(*ref) + namelen);
7535 if (!ref)
7536 return ERR;
7537 refs[refs_size++] = ref;
7538 strncpy(ref->name, name, namelen);
7539 }
7540
7541 ref->head = head;
7542 ref->tag = tag;
7543 ref->ltag = ltag;
7544 ref->remote = remote;
7545 ref->replace = replace;
7546 ref->tracked = tracked;
7547 string_copy_rev(ref->id, id);
7548
7549 if (head)
7550 refs_head = ref;
7551 return OK;
7552 }
7553
7554 static int
7555 load_refs(void)
7556 {
7557 const char *head_argv[] = {
7558 "git", "symbolic-ref", "HEAD", NULL
7559 };
7560 static const char *ls_remote_argv[SIZEOF_ARG] = {
7561 "git", "ls-remote", opt_git_dir, NULL
7562 };
7563 static bool init = FALSE;
7564 size_t i;
7565
7566 if (!init) {
7567 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
7568 die("TIG_LS_REMOTE contains too many arguments");
7569 init = TRUE;
7570 }
7571
7572 if (!*opt_git_dir)
7573 return OK;
7574
7575 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
7576 !prefixcmp(opt_head, "refs/heads/")) {
7577 char *offset = opt_head + STRING_SIZE("refs/heads/");
7578
7579 memmove(opt_head, offset, strlen(offset) + 1);
7580 }
7581
7582 refs_head = NULL;
7583 for (i = 0; i < refs_size; i++)
7584 refs[i]->id[0] = 0;
7585
7586 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
7587 return ERR;
7588
7589 /* Update the ref lists to reflect changes. */
7590 for (i = 0; i < ref_lists_size; i++) {
7591 struct ref_list *list = ref_lists[i];
7592 size_t old, new;
7593
7594 for (old = new = 0; old < list->size; old++)
7595 if (!strcmp(list->id, list->refs[old]->id))
7596 list->refs[new++] = list->refs[old];
7597 list->size = new;
7598 }
7599
7600 qsort(refs, refs_size, sizeof(*refs), compare_refs);
7601
7602 return OK;
7603 }
7604
7605 static void
7606 set_remote_branch(const char *name, const char *value, size_t valuelen)
7607 {
7608 if (!strcmp(name, ".remote")) {
7609 string_ncopy(opt_remote, value, valuelen);
7610
7611 } else if (*opt_remote && !strcmp(name, ".merge")) {
7612 size_t from = strlen(opt_remote);
7613
7614 if (!prefixcmp(value, "refs/heads/"))
7615 value += STRING_SIZE("refs/heads/");
7616
7617 if (!string_format_from(opt_remote, &from, "/%s", value))
7618 opt_remote[0] = 0;
7619 }
7620 }
7621
7622 static void
7623 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
7624 {
7625 const char *argv[SIZEOF_ARG] = { name, "=" };
7626 int argc = 1 + (cmd == option_set_command);
7627 enum option_code error;
7628
7629 if (!argv_from_string(argv, &argc, value))
7630 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
7631 else
7632 error = cmd(argc, argv);
7633
7634 if (error != OPT_OK)
7635 warn("Option 'tig.%s': %s", name, option_errors[error]);
7636 }
7637
7638 static bool
7639 set_environment_variable(const char *name, const char *value)
7640 {
7641 size_t len = strlen(name) + 1 + strlen(value) + 1;
7642 char *env = malloc(len);
7643
7644 if (env &&
7645 string_nformat(env, len, NULL, "%s=%s", name, value) &&
7646 putenv(env) == 0)
7647 return TRUE;
7648 free(env);
7649 return FALSE;
7650 }
7651
7652 static void
7653 set_work_tree(const char *value)
7654 {
7655 char cwd[SIZEOF_STR];
7656
7657 if (!getcwd(cwd, sizeof(cwd)))
7658 die("Failed to get cwd path: %s", strerror(errno));
7659 if (chdir(opt_git_dir) < 0)
7660 die("Failed to chdir(%s): %s", strerror(errno));
7661 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
7662 die("Failed to get git path: %s", strerror(errno));
7663 if (chdir(cwd) < 0)
7664 die("Failed to chdir(%s): %s", cwd, strerror(errno));
7665 if (chdir(value) < 0)
7666 die("Failed to chdir(%s): %s", value, strerror(errno));
7667 if (!getcwd(cwd, sizeof(cwd)))
7668 die("Failed to get cwd path: %s", strerror(errno));
7669 if (!set_environment_variable("GIT_WORK_TREE", cwd))
7670 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
7671 if (!set_environment_variable("GIT_DIR", opt_git_dir))
7672 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
7673 opt_is_inside_work_tree = TRUE;
7674 }
7675
7676 static void
7677 parse_git_color_option(enum line_type type, char *value)
7678 {
7679 struct line_info *info = &line_info[type];
7680 const char *argv[SIZEOF_ARG];
7681 int argc = 0;
7682 bool first_color = TRUE;
7683 int i;
7684
7685 if (!argv_from_string(argv, &argc, value))
7686 return;
7687
7688 info->fg = COLOR_DEFAULT;
7689 info->bg = COLOR_DEFAULT;
7690 info->attr = 0;
7691
7692 for (i = 0; i < argc; i++) {
7693 int attr = 0;
7694
7695 if (set_attribute(&attr, argv[i])) {
7696 info->attr |= attr;
7697
7698 } else if (set_color(&attr, argv[i])) {
7699 if (first_color)
7700 info->fg = attr;
7701 else
7702 info->bg = attr;
7703 first_color = FALSE;
7704 }
7705 }
7706 }
7707
7708 static void
7709 set_git_color_option(const char *name, char *value)
7710 {
7711 static const struct enum_map color_option_map[] = {
7712 ENUM_MAP("branch.current", LINE_MAIN_HEAD),
7713 ENUM_MAP("branch.local", LINE_MAIN_REF),
7714 ENUM_MAP("branch.plain", LINE_MAIN_REF),
7715 ENUM_MAP("branch.remote", LINE_MAIN_REMOTE),
7716
7717 ENUM_MAP("diff.meta", LINE_DIFF_HEADER),
7718 ENUM_MAP("diff.meta", LINE_DIFF_INDEX),
7719 ENUM_MAP("diff.meta", LINE_DIFF_OLDMODE),
7720 ENUM_MAP("diff.meta", LINE_DIFF_NEWMODE),
7721 ENUM_MAP("diff.frag", LINE_DIFF_CHUNK),
7722 ENUM_MAP("diff.old", LINE_DIFF_DEL),
7723 ENUM_MAP("diff.new", LINE_DIFF_ADD),
7724
7725 //ENUM_MAP("diff.commit", LINE_DIFF_ADD),
7726
7727 ENUM_MAP("status.branch", LINE_STAT_HEAD),
7728 //ENUM_MAP("status.nobranch", LINE_STAT_HEAD),
7729 ENUM_MAP("status.added", LINE_STAT_STAGED),
7730 ENUM_MAP("status.updated", LINE_STAT_STAGED),
7731 ENUM_MAP("status.changed", LINE_STAT_UNSTAGED),
7732 ENUM_MAP("status.untracked", LINE_STAT_UNTRACKED),
7733
7734 };
7735 int type = LINE_NONE;
7736
7737 if (opt_read_git_colors && map_enum(&type, color_option_map, name)) {
7738 parse_git_color_option(type, value);
7739 }
7740 }
7741
7742 static int
7743 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
7744 {
7745 if (!strcmp(name, "gui.encoding"))
7746 parse_encoding(&opt_encoding, value, TRUE);
7747
7748 else if (!strcmp(name, "core.editor"))
7749 string_ncopy(opt_editor, value, valuelen);
7750
7751 else if (!strcmp(name, "core.worktree"))
7752 set_work_tree(value);
7753
7754 else if (!prefixcmp(name, "tig.color."))
7755 set_repo_config_option(name + 10, value, option_color_command);
7756
7757 else if (!prefixcmp(name, "tig.bind."))
7758 set_repo_config_option(name + 9, value, option_bind_command);
7759
7760 else if (!prefixcmp(name, "tig."))
7761 set_repo_config_option(name + 4, value, option_set_command);
7762
7763 else if (!prefixcmp(name, "color."))
7764 set_git_color_option(name + STRING_SIZE("color."), value);
7765
7766 else if (*opt_head && !prefixcmp(name, "branch.") &&
7767 !strncmp(name + 7, opt_head, strlen(opt_head)))
7768 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
7769
7770 return OK;
7771 }
7772
7773 static int
7774 load_git_config(void)
7775 {
7776 const char *config_list_argv[] = { "git", "config", "--list", NULL };
7777
7778 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
7779 }
7780
7781 static int
7782 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
7783 {
7784 if (!opt_git_dir[0]) {
7785 string_ncopy(opt_git_dir, name, namelen);
7786
7787 } else if (opt_is_inside_work_tree == -1) {
7788 /* This can be 3 different values depending on the
7789 * version of git being used. If git-rev-parse does not
7790 * understand --is-inside-work-tree it will simply echo
7791 * the option else either "true" or "false" is printed.
7792 * Default to true for the unknown case. */
7793 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
7794
7795 } else if (*name == '.') {
7796 string_ncopy(opt_cdup, name, namelen);
7797
7798 } else {
7799 string_ncopy(opt_prefix, name, namelen);
7800 }
7801
7802 return OK;
7803 }
7804
7805 static int
7806 load_repo_info(void)
7807 {
7808 const char *rev_parse_argv[] = {
7809 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
7810 "--show-cdup", "--show-prefix", NULL
7811 };
7812
7813 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
7814 }
7815
7816
7817 /*
7818 * Main
7819 */
7820
7821 static const char usage[] =
7822 "tig " TIG_VERSION " (" __DATE__ ")\n"
7823 "\n"
7824 "Usage: tig [options] [revs] [--] [paths]\n"
7825 " or: tig show [options] [revs] [--] [paths]\n"
7826 " or: tig blame [options] [rev] [--] path\n"
7827 " or: tig status\n"
7828 " or: tig < [git command output]\n"
7829 "\n"
7830 "Options:\n"
7831 " +<number> Select line <number> in the first view\n"
7832 " -v, --version Show version and exit\n"
7833 " -h, --help Show help message and exit";
7834
7835 static void __NORETURN
7836 quit(int sig)
7837 {
7838 /* XXX: Restore tty modes and let the OS cleanup the rest! */
7839 if (cursed)
7840 endwin();
7841 exit(0);
7842 }
7843
7844 static void __NORETURN
7845 die(const char *err, ...)
7846 {
7847 va_list args;
7848
7849 endwin();
7850
7851 va_start(args, err);
7852 fputs("tig: ", stderr);
7853 vfprintf(stderr, err, args);
7854 fputs("\n", stderr);
7855 va_end(args);
7856
7857 exit(1);
7858 }
7859
7860 static void
7861 warn(const char *msg, ...)
7862 {
7863 va_list args;
7864
7865 va_start(args, msg);
7866 fputs("tig warning: ", stderr);
7867 vfprintf(stderr, msg, args);
7868 fputs("\n", stderr);
7869 va_end(args);
7870 }
7871
7872 static int
7873 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
7874 {
7875 const char ***filter_args = data;
7876
7877 return argv_append(filter_args, name) ? OK : ERR;
7878 }
7879
7880 static void
7881 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
7882 {
7883 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
7884 const char **all_argv = NULL;
7885
7886 if (!argv_append_array(&all_argv, rev_parse_argv) ||
7887 !argv_append_array(&all_argv, argv) ||
7888 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
7889 die("Failed to split arguments");
7890 argv_free(all_argv);
7891 free(all_argv);
7892 }
7893
7894 static void
7895 filter_options(const char *argv[], bool blame)
7896 {
7897 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
7898
7899 if (blame)
7900 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv);
7901 else
7902 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
7903
7904 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
7905 }
7906
7907 static enum request
7908 parse_options(int argc, const char *argv[])
7909 {
7910 enum request request = REQ_VIEW_MAIN;
7911 const char *subcommand;
7912 bool seen_dashdash = FALSE;
7913 const char **filter_argv = NULL;
7914 int i;
7915
7916 if (!isatty(STDIN_FILENO))
7917 return REQ_VIEW_PAGER;
7918
7919 if (argc <= 1)
7920 return REQ_VIEW_MAIN;
7921
7922 subcommand = argv[1];
7923 if (!strcmp(subcommand, "status")) {
7924 if (argc > 2)
7925 warn("ignoring arguments after `%s'", subcommand);
7926 return REQ_VIEW_STATUS;
7927
7928 } else if (!strcmp(subcommand, "blame")) {
7929 request = REQ_VIEW_BLAME;
7930
7931 } else if (!strcmp(subcommand, "show")) {
7932 request = REQ_VIEW_DIFF;
7933
7934 } else {
7935 subcommand = NULL;
7936 }
7937
7938 for (i = 1 + !!subcommand; i < argc; i++) {
7939 const char *opt = argv[i];
7940
7941 // stop parsing our options after -- and let rev-parse handle the rest
7942 if (!seen_dashdash) {
7943 if (!strcmp(opt, "--")) {
7944 seen_dashdash = TRUE;
7945 continue;
7946
7947 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
7948 printf("tig version %s\n", TIG_VERSION);
7949 quit(0);
7950
7951 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
7952 printf("%s\n", usage);
7953 quit(0);
7954
7955 } else if (strlen(opt) >= 2 && *opt == '+' && string_isnumber(opt + 1)) {
7956 opt_lineno = atoi(opt + 1);
7957 continue;
7958
7959 }
7960 }
7961
7962 if (!argv_append(&filter_argv, opt))
7963 die("command too long");
7964 }
7965
7966 if (filter_argv)
7967 filter_options(filter_argv, request == REQ_VIEW_BLAME);
7968
7969 /* Finish validating and setting up blame options */
7970 if (request == REQ_VIEW_BLAME) {
7971 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
7972 die("invalid number of options to blame\n\n%s", usage);
7973
7974 if (opt_rev_argv) {
7975 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
7976 }
7977
7978 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
7979 }
7980
7981 return request;
7982 }
7983
7984 int
7985 main(int argc, const char *argv[])
7986 {
7987 const char *codeset = ENCODING_UTF8;
7988 enum request request = parse_options(argc, argv);
7989 struct view *view;
7990
7991 signal(SIGINT, quit);
7992 signal(SIGPIPE, SIG_IGN);
7993
7994 if (setlocale(LC_ALL, "")) {
7995 codeset = nl_langinfo(CODESET);
7996 }
7997
7998 if (load_repo_info() == ERR)
7999 die("Failed to load repo info.");
8000
8001 if (load_options() == ERR)
8002 die("Failed to load user config.");
8003
8004 if (load_git_config() == ERR)
8005 die("Failed to load repo config.");
8006
8007 /* Require a git repository unless when running in pager mode. */
8008 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
8009 die("Not a git repository");
8010
8011 if (codeset && strcmp(codeset, ENCODING_UTF8)) {
8012 char translit[SIZEOF_STR];
8013
8014 if (string_format(translit, "%s%s", codeset, ICONV_TRANSLIT))
8015 opt_iconv_out = iconv_open(translit, ENCODING_UTF8);
8016 else
8017 opt_iconv_out = iconv_open(codeset, ENCODING_UTF8);
8018 if (opt_iconv_out == ICONV_NONE)
8019 die("Failed to initialize character set conversion");
8020 }
8021
8022 if (load_refs() == ERR)
8023 die("Failed to load refs.");
8024
8025 init_display();
8026
8027 while (view_driver(display[current_view], request)) {
8028 int key = get_input(0);
8029
8030 view = display[current_view];
8031 request = get_keybinding(view->keymap, key);
8032
8033 /* Some low-level request handling. This keeps access to
8034 * status_win restricted. */
8035 switch (request) {
8036 case REQ_NONE:
8037 report("Unknown key, press %s for help",
8038 get_view_key(view, REQ_VIEW_HELP));
8039 break;
8040 case REQ_PROMPT:
8041 {
8042 char *cmd = read_prompt(":");
8043
8044 if (cmd && string_isnumber(cmd)) {
8045 int lineno = view->pos.lineno + 1;
8046
8047 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OPT_OK) {
8048 select_view_line(view, lineno - 1);
8049 report("");
8050 } else {
8051 report("Unable to parse '%s' as a line number", cmd);
8052 }
8053 } else if (cmd && iscommit(cmd)) {
8054 string_ncopy(opt_search, cmd, strlen(cmd));
8055
8056 request = view_request(view, REQ_JUMP_COMMIT);
8057 if (request == REQ_JUMP_COMMIT) {
8058 report("Jumping to commits is not supported by the '%s' view", view->name);
8059 }
8060
8061 } else if (cmd) {
8062 struct view *next = VIEW(REQ_VIEW_PAGER);
8063 const char *argv[SIZEOF_ARG] = { "git" };
8064 int argc = 1;
8065
8066 /* When running random commands, initially show the
8067 * command in the title. However, it maybe later be
8068 * overwritten if a commit line is selected. */
8069 string_ncopy(next->ref, cmd, strlen(cmd));
8070
8071 if (!argv_from_string(argv, &argc, cmd)) {
8072 report("Too many arguments");
8073 } else if (!format_argv(&next->argv, argv, FALSE)) {
8074 report("Argument formatting failed");
8075 } else {
8076 next->dir = NULL;
8077 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
8078 }
8079 }
8080
8081 request = REQ_NONE;
8082 break;
8083 }
8084 case REQ_SEARCH:
8085 case REQ_SEARCH_BACK:
8086 {
8087 const char *prompt = request == REQ_SEARCH ? "/" : "?";
8088 char *search = read_prompt(prompt);
8089
8090 if (search)
8091 string_ncopy(opt_search, search, strlen(search));
8092 else if (*opt_search)
8093 request = request == REQ_SEARCH ?
8094 REQ_FIND_NEXT :
8095 REQ_FIND_PREV;
8096 else
8097 request = REQ_NONE;
8098 break;
8099 }
8100 default:
8101 break;
8102 }
8103 }
8104
8105 quit(0);
8106
8107 return 0;
8108 }
Text-mode interface for git