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Ensure \0 terminated input for iconv()
[tig.git] / tig.c
blob93266e1d06e19f58ec69a40d504342fad4dd9f30
1 /* Copyright (c) 2006-2010 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
18 static void __NORETURN die(const char *err, ...);
19 static void warn(const char *msg, ...);
20 static void report(const char *msg, ...);
21
22
23 struct ref {
24 char id[SIZEOF_REV]; /* Commit SHA1 ID */
25 unsigned int head:1; /* Is it the current HEAD? */
26 unsigned int tag:1; /* Is it a tag? */
27 unsigned int ltag:1; /* If so, is the tag local? */
28 unsigned int remote:1; /* Is it a remote ref? */
29 unsigned int replace:1; /* Is it a replace ref? */
30 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
31 char name[1]; /* Ref name; tag or head names are shortened. */
32 };
33
34 struct ref_list {
35 char id[SIZEOF_REV]; /* Commit SHA1 ID */
36 size_t size; /* Number of refs. */
37 struct ref **refs; /* References for this ID. */
38 };
39
40 static struct ref *get_ref_head();
41 static struct ref_list *get_ref_list(const char *id);
42 static void foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data);
43 static int load_refs(void);
44
45 enum input_status {
46 INPUT_OK,
47 INPUT_SKIP,
48 INPUT_STOP,
49 INPUT_CANCEL
50 };
51
52 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
53
54 static char *prompt_input(const char *prompt, input_handler handler, void *data);
55 static bool prompt_yesno(const char *prompt);
56
57 struct menu_item {
58 int hotkey;
59 const char *text;
60 void *data;
61 };
62
63 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected);
64
65 #define GRAPHIC_ENUM(_) \
66 _(GRAPHIC, ASCII), \
67 _(GRAPHIC, DEFAULT), \
68 _(GRAPHIC, UTF_8)
69
70 DEFINE_ENUM(graphic, GRAPHIC_ENUM);
71
72 #define DATE_ENUM(_) \
73 _(DATE, NO), \
74 _(DATE, DEFAULT), \
75 _(DATE, LOCAL), \
76 _(DATE, RELATIVE), \
77 _(DATE, SHORT)
78
79 DEFINE_ENUM(date, DATE_ENUM);
80
81 struct time {
82 time_t sec;
83 int tz;
84 };
85
86 static inline int timecmp(const struct time *t1, const struct time *t2)
87 {
88 return t1->sec - t2->sec;
89 }
90
91 static const char *
92 mkdate(const struct time *time, enum date date)
93 {
94 static char buf[DATE_COLS + 1];
95 static const struct enum_map reldate[] = {
96 { "second", 1, 60 * 2 },
97 { "minute", 60, 60 * 60 * 2 },
98 { "hour", 60 * 60, 60 * 60 * 24 * 2 },
99 { "day", 60 * 60 * 24, 60 * 60 * 24 * 7 * 2 },
100 { "week", 60 * 60 * 24 * 7, 60 * 60 * 24 * 7 * 5 },
101 { "month", 60 * 60 * 24 * 30, 60 * 60 * 24 * 30 * 12 },
102 };
103 struct tm tm;
104
105 if (!date || !time || !time->sec)
106 return "";
107
108 if (date == DATE_RELATIVE) {
109 struct timeval now;
110 time_t date = time->sec + time->tz;
111 time_t seconds;
112 int i;
113
114 gettimeofday(&now, NULL);
115 seconds = now.tv_sec < date ? date - now.tv_sec : now.tv_sec - date;
116 for (i = 0; i < ARRAY_SIZE(reldate); i++) {
117 if (seconds >= reldate[i].value)
118 continue;
119
120 seconds /= reldate[i].namelen;
121 if (!string_format(buf, "%ld %s%s %s",
122 seconds, reldate[i].name,
123 seconds > 1 ? "s" : "",
124 now.tv_sec >= date ? "ago" : "ahead"))
125 break;
126 return buf;
127 }
128 }
129
130 if (date == DATE_LOCAL) {
131 time_t date = time->sec + time->tz;
132 localtime_r(&date, &tm);
133 }
134 else {
135 gmtime_r(&time->sec, &tm);
136 }
137 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
138 }
139
140
141 #define AUTHOR_ENUM(_) \
142 _(AUTHOR, NO), \
143 _(AUTHOR, FULL), \
144 _(AUTHOR, ABBREVIATED)
145
146 DEFINE_ENUM(author, AUTHOR_ENUM);
147
148 static const char *
149 get_author_initials(const char *author)
150 {
151 static char initials[AUTHOR_COLS * 6 + 1];
152 size_t pos = 0;
153 const char *end = strchr(author, '\0');
154
155 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@' || (c) == '-')
156
157 memset(initials, 0, sizeof(initials));
158 while (author < end) {
159 unsigned char bytes;
160 size_t i;
161
162 while (author < end && is_initial_sep(*author))
163 author++;
164
165 bytes = utf8_char_length(author, end);
166 if (bytes >= sizeof(initials) - 1 - pos)
167 break;
168 while (bytes--) {
169 initials[pos++] = *author++;
170 }
171
172 i = pos;
173 while (author < end && !is_initial_sep(*author)) {
174 bytes = utf8_char_length(author, end);
175 if (bytes >= sizeof(initials) - 1 - i) {
176 while (author < end && !is_initial_sep(*author))
177 author++;
178 break;
179 }
180 while (bytes--) {
181 initials[i++] = *author++;
182 }
183 }
184
185 initials[i++] = 0;
186 }
187
188 return initials;
189 }
190
191 #define author_trim(cols) (cols == 0 || cols > 5)
192
193 static const char *
194 mkauthor(const char *text, int cols, enum author author)
195 {
196 bool trim = author_trim(cols);
197 bool abbreviate = author == AUTHOR_ABBREVIATED || !trim;
198
199 if (author == AUTHOR_NO)
200 return "";
201 if (abbreviate && text)
202 return get_author_initials(text);
203 return text;
204 }
205
206 static const char *
207 mkmode(mode_t mode)
208 {
209 if (S_ISDIR(mode))
210 return "drwxr-xr-x";
211 else if (S_ISLNK(mode))
212 return "lrwxrwxrwx";
213 else if (S_ISGITLINK(mode))
214 return "m---------";
215 else if (S_ISREG(mode) && mode & S_IXUSR)
216 return "-rwxr-xr-x";
217 else if (S_ISREG(mode))
218 return "-rw-r--r--";
219 else
220 return "----------";
221 }
222
223 #define FILENAME_ENUM(_) \
224 _(FILENAME, NO), \
225 _(FILENAME, ALWAYS), \
226 _(FILENAME, AUTO)
227
228 DEFINE_ENUM(filename, FILENAME_ENUM);
229
230
231 /*
232 * User requests
233 */
234
235 #define REQ_INFO \
236 /* XXX: Keep the view request first and in sync with views[]. */ \
237 REQ_GROUP("View switching") \
238 REQ_(VIEW_MAIN, "Show main view"), \
239 REQ_(VIEW_DIFF, "Show diff view"), \
240 REQ_(VIEW_LOG, "Show log view"), \
241 REQ_(VIEW_TREE, "Show tree view"), \
242 REQ_(VIEW_BLOB, "Show blob view"), \
243 REQ_(VIEW_BLAME, "Show blame view"), \
244 REQ_(VIEW_BRANCH, "Show branch view"), \
245 REQ_(VIEW_HELP, "Show help page"), \
246 REQ_(VIEW_PAGER, "Show pager view"), \
247 REQ_(VIEW_STATUS, "Show status view"), \
248 REQ_(VIEW_STAGE, "Show stage view"), \
249 \
250 REQ_GROUP("View manipulation") \
251 REQ_(ENTER, "Enter current line and scroll"), \
252 REQ_(NEXT, "Move to next"), \
253 REQ_(PREVIOUS, "Move to previous"), \
254 REQ_(PARENT, "Move to parent"), \
255 REQ_(VIEW_NEXT, "Move focus to next view"), \
256 REQ_(REFRESH, "Reload and refresh"), \
257 REQ_(MAXIMIZE, "Maximize the current view"), \
258 REQ_(VIEW_CLOSE, "Close the current view"), \
259 REQ_(QUIT, "Close all views and quit"), \
260 \
261 REQ_GROUP("View specific requests") \
262 REQ_(STATUS_UPDATE, "Update file status"), \
263 REQ_(STATUS_REVERT, "Revert file changes"), \
264 REQ_(STATUS_MERGE, "Merge file using external tool"), \
265 REQ_(STAGE_UPDATE_LINE, "Update single line"), \
266 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
267 REQ_(DIFF_CONTEXT_DOWN, "Decrease the diff context"), \
268 REQ_(DIFF_CONTEXT_UP, "Increase the diff context"), \
269 \
270 REQ_GROUP("Cursor navigation") \
271 REQ_(MOVE_UP, "Move cursor one line up"), \
272 REQ_(MOVE_DOWN, "Move cursor one line down"), \
273 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
274 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
275 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
276 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
277 \
278 REQ_GROUP("Scrolling") \
279 REQ_(SCROLL_FIRST_COL, "Scroll to the first line columns"), \
280 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
281 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
282 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
283 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
284 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
285 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
286 \
287 REQ_GROUP("Searching") \
288 REQ_(SEARCH, "Search the view"), \
289 REQ_(SEARCH_BACK, "Search backwards in the view"), \
290 REQ_(FIND_NEXT, "Find next search match"), \
291 REQ_(FIND_PREV, "Find previous search match"), \
292 \
293 REQ_GROUP("Option manipulation") \
294 REQ_(OPTIONS, "Open option menu"), \
295 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
296 REQ_(TOGGLE_DATE, "Toggle date display"), \
297 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
298 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
299 REQ_(TOGGLE_GRAPHIC, "Toggle (line) graphics mode"), \
300 REQ_(TOGGLE_FILENAME, "Toggle file name display"), \
301 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
302 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
303 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
304 \
305 REQ_GROUP("Misc") \
306 REQ_(PROMPT, "Bring up the prompt"), \
307 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
308 REQ_(SHOW_VERSION, "Show version information"), \
309 REQ_(STOP_LOADING, "Stop all loading views"), \
310 REQ_(EDIT, "Open in editor"), \
311 REQ_(NONE, "Do nothing")
312
313
314 /* User action requests. */
315 enum request {
316 #define REQ_GROUP(help)
317 #define REQ_(req, help) REQ_##req
318
319 /* Offset all requests to avoid conflicts with ncurses getch values. */
320 REQ_UNKNOWN = KEY_MAX + 1,
321 REQ_OFFSET,
322 REQ_INFO,
323
324 /* Internal requests. */
325 REQ_JUMP_COMMIT,
326
327 #undef REQ_GROUP
328 #undef REQ_
329 };
330
331 struct request_info {
332 enum request request;
333 const char *name;
334 int namelen;
335 const char *help;
336 };
337
338 static const struct request_info req_info[] = {
339 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
340 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
341 REQ_INFO
342 #undef REQ_GROUP
343 #undef REQ_
344 };
345
346 static enum request
347 get_request(const char *name)
348 {
349 int namelen = strlen(name);
350 int i;
351
352 for (i = 0; i < ARRAY_SIZE(req_info); i++)
353 if (enum_equals(req_info[i], name, namelen))
354 return req_info[i].request;
355
356 return REQ_UNKNOWN;
357 }
358
359
360 /*
361 * Options
362 */
363
364 /* Option and state variables. */
365 static enum graphic opt_line_graphics = GRAPHIC_DEFAULT;
366 static enum date opt_date = DATE_DEFAULT;
367 static enum author opt_author = AUTHOR_FULL;
368 static enum filename opt_filename = FILENAME_AUTO;
369 static bool opt_rev_graph = TRUE;
370 static bool opt_line_number = FALSE;
371 static bool opt_show_refs = TRUE;
372 static bool opt_untracked_dirs_content = TRUE;
373 static int opt_diff_context = 3;
374 static char opt_diff_context_arg[9] = "";
375 static char opt_notes_arg[SIZEOF_STR] = "--no-notes";
376 static int opt_num_interval = 5;
377 static double opt_hscroll = 0.50;
378 static double opt_scale_split_view = 2.0 / 3.0;
379 static int opt_tab_size = 8;
380 static int opt_author_cols = AUTHOR_COLS;
381 static int opt_filename_cols = FILENAME_COLS;
382 static char opt_path[SIZEOF_STR] = "";
383 static char opt_file[SIZEOF_STR] = "";
384 static char opt_ref[SIZEOF_REF] = "";
385 static unsigned long opt_goto_line = 0;
386 static char opt_head[SIZEOF_REF] = "";
387 static char opt_remote[SIZEOF_REF] = "";
388 static char opt_encoding[20] = ENCODING_UTF8;
389 static iconv_t opt_iconv_in = ICONV_NONE;
390 static iconv_t opt_iconv_out = ICONV_NONE;
391 static char opt_search[SIZEOF_STR] = "";
392 static char opt_cdup[SIZEOF_STR] = "";
393 static char opt_prefix[SIZEOF_STR] = "";
394 static char opt_git_dir[SIZEOF_STR] = "";
395 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
396 static char opt_editor[SIZEOF_STR] = "";
397 static FILE *opt_tty = NULL;
398 static const char **opt_diff_argv = NULL;
399 static const char **opt_rev_argv = NULL;
400 static const char **opt_file_argv = NULL;
401 static const char **opt_blame_argv = NULL;
402 static int opt_lineno = 0;
403
404 #define is_initial_commit() (!get_ref_head())
405 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strcmp(rev, get_ref_head()->id)))
406
407 static inline void
408 update_diff_context_arg(int diff_context)
409 {
410 if (!string_format(opt_diff_context_arg, "-U%u", diff_context))
411 string_ncopy(opt_diff_context_arg, "-U3", 3);
412 }
413
414 /*
415 * Line-oriented content detection.
416 */
417
418 #define LINE_INFO \
419 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
420 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
421 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
422 LINE(DIFF_ADD2, " +", COLOR_GREEN, COLOR_DEFAULT, 0), \
423 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
424 LINE(DIFF_DEL2, " -", COLOR_RED, COLOR_DEFAULT, 0), \
425 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
426 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
427 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
428 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
429 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
430 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
431 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
432 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
433 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
434 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
435 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
436 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
437 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
438 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
439 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
440 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
441 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
442 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
443 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
444 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
445 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
446 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
447 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
448 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
449 LINE(TESTED, " Tested-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
450 LINE(REVIEWED, " Reviewed-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
451 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
452 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
453 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
454 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
455 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
456 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
457 LINE(FILENAME, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
458 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
459 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
460 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
461 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
462 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
463 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
464 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
465 LINE(MAIN_REPLACE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
466 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
467 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
468 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
469 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
470 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
471 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
472 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
473 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
474 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
475 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
476 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
477 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
478 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
479 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
480 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
481 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
482 LINE(DIFF_STAT, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
483 LINE(PALETTE_0, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
484 LINE(PALETTE_1, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
485 LINE(PALETTE_2, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
486 LINE(PALETTE_3, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
487 LINE(PALETTE_4, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
488 LINE(PALETTE_5, "", COLOR_WHITE, COLOR_DEFAULT, 0), \
489 LINE(PALETTE_6, "", COLOR_RED, COLOR_DEFAULT, 0), \
490 LINE(GRAPH_COMMIT, "", COLOR_BLUE, COLOR_DEFAULT, 0)
491
492 enum line_type {
493 #define LINE(type, line, fg, bg, attr) \
494 LINE_##type
495 LINE_INFO,
496 LINE_NONE
497 #undef LINE
498 };
499
500 struct line_info {
501 const char *name; /* Option name. */
502 int namelen; /* Size of option name. */
503 const char *line; /* The start of line to match. */
504 int linelen; /* Size of string to match. */
505 int fg, bg, attr; /* Color and text attributes for the lines. */
506 };
507
508 static struct line_info line_info[] = {
509 #define LINE(type, line, fg, bg, attr) \
510 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
511 LINE_INFO
512 #undef LINE
513 };
514
515 static struct line_info *custom_color;
516 static size_t custom_colors;
517
518 DEFINE_ALLOCATOR(realloc_custom_color, struct line_info, 8)
519
520 #define TO_CUSTOM_COLOR_TYPE(type) (LINE_NONE + 1 + (type))
521 #define TO_CUSTOM_COLOR_OFFSET(type) ((type) - LINE_NONE - 1)
522
523 /* Color IDs must be 1 or higher. [GH #15] */
524 #define COLOR_ID(line_type) ((line_type) + 1)
525
526 static enum line_type
527 get_line_type(const char *line)
528 {
529 int linelen = strlen(line);
530 enum line_type type;
531
532 for (type = 0; type < custom_colors; type++)
533 /* Case insensitive search matches Signed-off-by lines better. */
534 if (linelen >= custom_color[type].linelen &&
535 !strncasecmp(custom_color[type].line, line, custom_color[type].linelen))
536 return TO_CUSTOM_COLOR_TYPE(type);
537
538 for (type = 0; type < ARRAY_SIZE(line_info); type++)
539 /* Case insensitive search matches Signed-off-by lines better. */
540 if (linelen >= line_info[type].linelen &&
541 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
542 return type;
543
544 return LINE_DEFAULT;
545 }
546
547 static enum line_type
548 get_line_type_from_ref(const struct ref *ref)
549 {
550 if (ref->head)
551 return LINE_MAIN_HEAD;
552 else if (ref->ltag)
553 return LINE_MAIN_LOCAL_TAG;
554 else if (ref->tag)
555 return LINE_MAIN_TAG;
556 else if (ref->tracked)
557 return LINE_MAIN_TRACKED;
558 else if (ref->remote)
559 return LINE_MAIN_REMOTE;
560 else if (ref->replace)
561 return LINE_MAIN_REPLACE;
562
563 return LINE_MAIN_REF;
564 }
565
566 static inline int
567 get_line_attr(enum line_type type)
568 {
569 if (type > LINE_NONE) {
570 assert(TO_CUSTOM_COLOR_OFFSET(type) < custom_colors);
571 return COLOR_PAIR(COLOR_ID(type)) | custom_color[TO_CUSTOM_COLOR_OFFSET(type)].attr;
572 }
573 assert(type < ARRAY_SIZE(line_info));
574 return COLOR_PAIR(COLOR_ID(type)) | line_info[type].attr;
575 }
576
577 static struct line_info *
578 get_line_info(const char *name)
579 {
580 size_t namelen = strlen(name);
581 enum line_type type;
582
583 for (type = 0; type < ARRAY_SIZE(line_info); type++)
584 if (enum_equals(line_info[type], name, namelen))
585 return &line_info[type];
586
587 return NULL;
588 }
589
590 static struct line_info *
591 add_custom_color(const char *quoted_line)
592 {
593 struct line_info *info;
594 char *line;
595 size_t linelen;
596
597 if (!realloc_custom_color(&custom_color, custom_colors, 1))
598 die("Failed to alloc custom line info");
599
600 linelen = strlen(quoted_line) - 1;
601 line = malloc(linelen);
602 if (!line)
603 return NULL;
604
605 strncpy(line, quoted_line + 1, linelen);
606 line[linelen - 1] = 0;
607
608 info = &custom_color[custom_colors++];
609 info->name = info->line = line;
610 info->namelen = info->linelen = strlen(line);
611
612 return info;
613 }
614
615 static void
616 init_line_info_color_pair(struct line_info *info, enum line_type type,
617 int default_bg, int default_fg)
618 {
619 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
620 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
621
622 init_pair(COLOR_ID(type), fg, bg);
623 }
624
625 static void
626 init_colors(void)
627 {
628 int default_bg = line_info[LINE_DEFAULT].bg;
629 int default_fg = line_info[LINE_DEFAULT].fg;
630 enum line_type type;
631
632 start_color();
633
634 if (assume_default_colors(default_fg, default_bg) == ERR) {
635 default_bg = COLOR_BLACK;
636 default_fg = COLOR_WHITE;
637 }
638
639 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
640 struct line_info *info = &line_info[type];
641
642 init_line_info_color_pair(info, type, default_bg, default_fg);
643 }
644
645 for (type = 0; type < custom_colors; type++) {
646 struct line_info *info = &custom_color[type];
647
648 init_line_info_color_pair(info, TO_CUSTOM_COLOR_TYPE(type),
649 default_bg, default_fg);
650 }
651 }
652
653 struct line {
654 enum line_type type;
655
656 /* State flags */
657 unsigned int selected:1;
658 unsigned int dirty:1;
659 unsigned int cleareol:1;
660 unsigned int other:16;
661
662 void *data; /* User data */
663 };
664
665
666 /*
667 * Keys
668 */
669
670 struct keybinding {
671 int alias;
672 enum request request;
673 };
674
675 static struct keybinding default_keybindings[] = {
676 /* View switching */
677 { 'm', REQ_VIEW_MAIN },
678 { 'd', REQ_VIEW_DIFF },
679 { 'l', REQ_VIEW_LOG },
680 { 't', REQ_VIEW_TREE },
681 { 'f', REQ_VIEW_BLOB },
682 { 'B', REQ_VIEW_BLAME },
683 { 'H', REQ_VIEW_BRANCH },
684 { 'p', REQ_VIEW_PAGER },
685 { 'h', REQ_VIEW_HELP },
686 { 'S', REQ_VIEW_STATUS },
687 { 'c', REQ_VIEW_STAGE },
688
689 /* View manipulation */
690 { 'q', REQ_VIEW_CLOSE },
691 { KEY_TAB, REQ_VIEW_NEXT },
692 { KEY_RETURN, REQ_ENTER },
693 { KEY_UP, REQ_PREVIOUS },
694 { KEY_CTL('P'), REQ_PREVIOUS },
695 { KEY_DOWN, REQ_NEXT },
696 { KEY_CTL('N'), REQ_NEXT },
697 { 'R', REQ_REFRESH },
698 { KEY_F(5), REQ_REFRESH },
699 { 'O', REQ_MAXIMIZE },
700 { ',', REQ_PARENT },
701
702 /* View specific */
703 { 'u', REQ_STATUS_UPDATE },
704 { '!', REQ_STATUS_REVERT },
705 { 'M', REQ_STATUS_MERGE },
706 { KEY_CTL('u'), REQ_STAGE_UPDATE_LINE },
707 { '@', REQ_STAGE_NEXT },
708 { '[', REQ_DIFF_CONTEXT_DOWN },
709 { ']', REQ_DIFF_CONTEXT_UP },
710
711 /* Cursor navigation */
712 { 'k', REQ_MOVE_UP },
713 { 'j', REQ_MOVE_DOWN },
714 { KEY_HOME, REQ_MOVE_FIRST_LINE },
715 { KEY_END, REQ_MOVE_LAST_LINE },
716 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
717 { KEY_CTL('D'), REQ_MOVE_PAGE_DOWN },
718 { ' ', REQ_MOVE_PAGE_DOWN },
719 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
720 { KEY_CTL('U'), REQ_MOVE_PAGE_UP },
721 { 'b', REQ_MOVE_PAGE_UP },
722 { '-', REQ_MOVE_PAGE_UP },
723
724 /* Scrolling */
725 { '|', REQ_SCROLL_FIRST_COL },
726 { KEY_LEFT, REQ_SCROLL_LEFT },
727 { KEY_RIGHT, REQ_SCROLL_RIGHT },
728 { KEY_IC, REQ_SCROLL_LINE_UP },
729 { KEY_CTL('Y'), REQ_SCROLL_LINE_UP },
730 { KEY_DC, REQ_SCROLL_LINE_DOWN },
731 { KEY_CTL('E'), REQ_SCROLL_LINE_DOWN },
732 { 'w', REQ_SCROLL_PAGE_UP },
733 { 's', REQ_SCROLL_PAGE_DOWN },
734
735 /* Searching */
736 { '/', REQ_SEARCH },
737 { '?', REQ_SEARCH_BACK },
738 { 'n', REQ_FIND_NEXT },
739 { 'N', REQ_FIND_PREV },
740
741 /* Misc */
742 { 'Q', REQ_QUIT },
743 { 'z', REQ_STOP_LOADING },
744 { 'v', REQ_SHOW_VERSION },
745 { 'r', REQ_SCREEN_REDRAW },
746 { KEY_CTL('L'), REQ_SCREEN_REDRAW },
747 { 'o', REQ_OPTIONS },
748 { '.', REQ_TOGGLE_LINENO },
749 { 'D', REQ_TOGGLE_DATE },
750 { 'A', REQ_TOGGLE_AUTHOR },
751 { 'g', REQ_TOGGLE_REV_GRAPH },
752 { '~', REQ_TOGGLE_GRAPHIC },
753 { '#', REQ_TOGGLE_FILENAME },
754 { 'F', REQ_TOGGLE_REFS },
755 { 'I', REQ_TOGGLE_SORT_ORDER },
756 { 'i', REQ_TOGGLE_SORT_FIELD },
757 { ':', REQ_PROMPT },
758 { 'e', REQ_EDIT },
759 };
760
761 #define KEYMAP_ENUM(_) \
762 _(KEYMAP, GENERIC), \
763 _(KEYMAP, MAIN), \
764 _(KEYMAP, DIFF), \
765 _(KEYMAP, LOG), \
766 _(KEYMAP, TREE), \
767 _(KEYMAP, BLOB), \
768 _(KEYMAP, BLAME), \
769 _(KEYMAP, BRANCH), \
770 _(KEYMAP, PAGER), \
771 _(KEYMAP, HELP), \
772 _(KEYMAP, STATUS), \
773 _(KEYMAP, STAGE)
774
775 DEFINE_ENUM(keymap, KEYMAP_ENUM);
776
777 #define set_keymap(map, name) map_enum(map, keymap_map, name)
778
779 struct keybinding_table {
780 struct keybinding *data;
781 size_t size;
782 };
783
784 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_map)];
785
786 static void
787 add_keybinding(enum keymap keymap, enum request request, int key)
788 {
789 struct keybinding_table *table = &keybindings[keymap];
790 size_t i;
791
792 for (i = 0; i < keybindings[keymap].size; i++) {
793 if (keybindings[keymap].data[i].alias == key) {
794 keybindings[keymap].data[i].request = request;
795 return;
796 }
797 }
798
799 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
800 if (!table->data)
801 die("Failed to allocate keybinding");
802 table->data[table->size].alias = key;
803 table->data[table->size++].request = request;
804
805 if (request == REQ_NONE && keymap == KEYMAP_GENERIC) {
806 int i;
807
808 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
809 if (default_keybindings[i].alias == key)
810 default_keybindings[i].request = REQ_NONE;
811 }
812 }
813
814 /* Looks for a key binding first in the given map, then in the generic map, and
815 * lastly in the default keybindings. */
816 static enum request
817 get_keybinding(enum keymap keymap, int key)
818 {
819 size_t i;
820
821 for (i = 0; i < keybindings[keymap].size; i++)
822 if (keybindings[keymap].data[i].alias == key)
823 return keybindings[keymap].data[i].request;
824
825 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
826 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
827 return keybindings[KEYMAP_GENERIC].data[i].request;
828
829 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
830 if (default_keybindings[i].alias == key)
831 return default_keybindings[i].request;
832
833 return (enum request) key;
834 }
835
836
837 struct key {
838 const char *name;
839 int value;
840 };
841
842 static const struct key key_table[] = {
843 { "Enter", KEY_RETURN },
844 { "Space", ' ' },
845 { "Backspace", KEY_BACKSPACE },
846 { "Tab", KEY_TAB },
847 { "Escape", KEY_ESC },
848 { "Left", KEY_LEFT },
849 { "Right", KEY_RIGHT },
850 { "Up", KEY_UP },
851 { "Down", KEY_DOWN },
852 { "Insert", KEY_IC },
853 { "Delete", KEY_DC },
854 { "Hash", '#' },
855 { "Home", KEY_HOME },
856 { "End", KEY_END },
857 { "PageUp", KEY_PPAGE },
858 { "PageDown", KEY_NPAGE },
859 { "F1", KEY_F(1) },
860 { "F2", KEY_F(2) },
861 { "F3", KEY_F(3) },
862 { "F4", KEY_F(4) },
863 { "F5", KEY_F(5) },
864 { "F6", KEY_F(6) },
865 { "F7", KEY_F(7) },
866 { "F8", KEY_F(8) },
867 { "F9", KEY_F(9) },
868 { "F10", KEY_F(10) },
869 { "F11", KEY_F(11) },
870 { "F12", KEY_F(12) },
871 };
872
873 static int
874 get_key_value(const char *name)
875 {
876 int i;
877
878 for (i = 0; i < ARRAY_SIZE(key_table); i++)
879 if (!strcasecmp(key_table[i].name, name))
880 return key_table[i].value;
881
882 if (strlen(name) == 2 && name[0] == '^' && isprint(*name))
883 return (int)name[1] & 0x1f;
884 if (strlen(name) == 1 && isprint(*name))
885 return (int) *name;
886 return ERR;
887 }
888
889 static const char *
890 get_key_name(int key_value)
891 {
892 static char key_char[] = "'X'\0";
893 const char *seq = NULL;
894 int key;
895
896 for (key = 0; key < ARRAY_SIZE(key_table); key++)
897 if (key_table[key].value == key_value)
898 seq = key_table[key].name;
899
900 if (seq == NULL && key_value < 0x7f) {
901 char *s = key_char + 1;
902
903 if (key_value >= 0x20) {
904 *s++ = key_value;
905 } else {
906 *s++ = '^';
907 *s++ = 0x40 | (key_value & 0x1f);
908 }
909 *s++ = '\'';
910 *s++ = '\0';
911 seq = key_char;
912 }
913
914 return seq ? seq : "(no key)";
915 }
916
917 static bool
918 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
919 {
920 const char *sep = *pos > 0 ? ", " : "";
921 const char *keyname = get_key_name(keybinding->alias);
922
923 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
924 }
925
926 static bool
927 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
928 enum keymap keymap, bool all)
929 {
930 int i;
931
932 for (i = 0; i < keybindings[keymap].size; i++) {
933 if (keybindings[keymap].data[i].request == request) {
934 if (!append_key(buf, pos, &keybindings[keymap].data[i]))
935 return FALSE;
936 if (!all)
937 break;
938 }
939 }
940
941 return TRUE;
942 }
943
944 #define get_key(keymap, request) get_keys(keymap, request, FALSE)
945
946 static const char *
947 get_keys(enum keymap keymap, enum request request, bool all)
948 {
949 static char buf[BUFSIZ];
950 size_t pos = 0;
951 int i;
952
953 buf[pos] = 0;
954
955 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
956 return "Too many keybindings!";
957 if (pos > 0 && !all)
958 return buf;
959
960 if (keymap != KEYMAP_GENERIC) {
961 /* Only the generic keymap includes the default keybindings when
962 * listing all keys. */
963 if (all)
964 return buf;
965
966 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
967 return "Too many keybindings!";
968 if (pos)
969 return buf;
970 }
971
972 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
973 if (default_keybindings[i].request == request) {
974 if (!append_key(buf, &pos, &default_keybindings[i]))
975 return "Too many keybindings!";
976 if (!all)
977 return buf;
978 }
979 }
980
981 return buf;
982 }
983
984 struct run_request {
985 enum keymap keymap;
986 int key;
987 const char **argv;
988 };
989
990 static struct run_request *run_request;
991 static size_t run_requests;
992
993 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
994
995 static enum request
996 add_run_request(enum keymap keymap, int key, const char **argv)
997 {
998 struct run_request *req;
999
1000 if (!realloc_run_requests(&run_request, run_requests, 1))
1001 return REQ_NONE;
1002
1003 req = &run_request[run_requests];
1004 req->keymap = keymap;
1005 req->key = key;
1006 req->argv = NULL;
1007
1008 if (!argv_copy(&req->argv, argv))
1009 return REQ_NONE;
1010
1011 return REQ_NONE + ++run_requests;
1012 }
1013
1014 static struct run_request *
1015 get_run_request(enum request request)
1016 {
1017 if (request <= REQ_NONE)
1018 return NULL;
1019 return &run_request[request - REQ_NONE - 1];
1020 }
1021
1022 static void
1023 add_builtin_run_requests(void)
1024 {
1025 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1026 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
1027 const char *commit[] = { "git", "commit", NULL };
1028 const char *gc[] = { "git", "gc", NULL };
1029 struct run_request reqs[] = {
1030 { KEYMAP_MAIN, 'C', cherry_pick },
1031 { KEYMAP_STATUS, 'C', commit },
1032 { KEYMAP_BRANCH, 'C', checkout },
1033 { KEYMAP_GENERIC, 'G', gc },
1034 };
1035 int i;
1036
1037 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1038 enum request req = get_keybinding(reqs[i].keymap, reqs[i].key);
1039
1040 if (req != reqs[i].key)
1041 continue;
1042 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argv);
1043 if (req != REQ_NONE)
1044 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1045 }
1046 }
1047
1048 /*
1049 * User config file handling.
1050 */
1051
1052 #define OPT_ERR_INFO \
1053 OPT_ERR_(INTEGER_VALUE_OUT_OF_BOUND, "Integer value out of bound"), \
1054 OPT_ERR_(INVALID_STEP_VALUE, "Invalid step value"), \
1055 OPT_ERR_(NO_OPTION_VALUE, "No option value"), \
1056 OPT_ERR_(NO_VALUE_ASSIGNED, "No value assigned"), \
1057 OPT_ERR_(OBSOLETE_REQUEST_NAME, "Obsolete request name"), \
1058 OPT_ERR_(OUT_OF_MEMORY, "Out of memory"), \
1059 OPT_ERR_(TOO_MANY_OPTION_ARGUMENTS, "Too many option arguments"), \
1060 OPT_ERR_(UNKNOWN_ATTRIBUTE, "Unknown attribute"), \
1061 OPT_ERR_(UNKNOWN_COLOR, "Unknown color"), \
1062 OPT_ERR_(UNKNOWN_COLOR_NAME, "Unknown color name"), \
1063 OPT_ERR_(UNKNOWN_KEY, "Unknown key"), \
1064 OPT_ERR_(UNKNOWN_KEY_MAP, "Unknown key map"), \
1065 OPT_ERR_(UNKNOWN_OPTION_COMMAND, "Unknown option command"), \
1066 OPT_ERR_(UNKNOWN_REQUEST_NAME, "Unknown request name"), \
1067 OPT_ERR_(UNKNOWN_VARIABLE_NAME, "Unknown variable name"), \
1068 OPT_ERR_(UNMATCHED_QUOTATION, "Unmatched quotation"), \
1069 OPT_ERR_(WRONG_NUMBER_OF_ARGUMENTS, "Wrong number of arguments"),
1070
1071 enum option_code {
1072 #define OPT_ERR_(name, msg) OPT_ERR_ ## name
1073 OPT_ERR_INFO
1074 #undef OPT_ERR_
1075 OPT_OK
1076 };
1077
1078 static const char *option_errors[] = {
1079 #define OPT_ERR_(name, msg) msg
1080 OPT_ERR_INFO
1081 #undef OPT_ERR_
1082 };
1083
1084 static const struct enum_map color_map[] = {
1085 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
1086 COLOR_MAP(DEFAULT),
1087 COLOR_MAP(BLACK),
1088 COLOR_MAP(BLUE),
1089 COLOR_MAP(CYAN),
1090 COLOR_MAP(GREEN),
1091 COLOR_MAP(MAGENTA),
1092 COLOR_MAP(RED),
1093 COLOR_MAP(WHITE),
1094 COLOR_MAP(YELLOW),
1095 };
1096
1097 static const struct enum_map attr_map[] = {
1098 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
1099 ATTR_MAP(NORMAL),
1100 ATTR_MAP(BLINK),
1101 ATTR_MAP(BOLD),
1102 ATTR_MAP(DIM),
1103 ATTR_MAP(REVERSE),
1104 ATTR_MAP(STANDOUT),
1105 ATTR_MAP(UNDERLINE),
1106 };
1107
1108 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
1109
1110 static enum option_code
1111 parse_step(double *opt, const char *arg)
1112 {
1113 *opt = atoi(arg);
1114 if (!strchr(arg, '%'))
1115 return OPT_OK;
1116
1117 /* "Shift down" so 100% and 1 does not conflict. */
1118 *opt = (*opt - 1) / 100;
1119 if (*opt >= 1.0) {
1120 *opt = 0.99;
1121 return OPT_ERR_INVALID_STEP_VALUE;
1122 }
1123 if (*opt < 0.0) {
1124 *opt = 1;
1125 return OPT_ERR_INVALID_STEP_VALUE;
1126 }
1127 return OPT_OK;
1128 }
1129
1130 static enum option_code
1131 parse_int(int *opt, const char *arg, int min, int max)
1132 {
1133 int value = atoi(arg);
1134
1135 if (min <= value && value <= max) {
1136 *opt = value;
1137 return OPT_OK;
1138 }
1139
1140 return OPT_ERR_INTEGER_VALUE_OUT_OF_BOUND;
1141 }
1142
1143 static bool
1144 set_color(int *color, const char *name)
1145 {
1146 if (map_enum(color, color_map, name))
1147 return TRUE;
1148 if (!prefixcmp(name, "color"))
1149 return parse_int(color, name + 5, 0, 255) == OPT_OK;
1150 return FALSE;
1151 }
1152
1153 /* Wants: object fgcolor bgcolor [attribute] */
1154 static enum option_code
1155 option_color_command(int argc, const char *argv[])
1156 {
1157 struct line_info *info;
1158
1159 if (argc < 3)
1160 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1161
1162 if (*argv[0] == '"' || *argv[0] == '\'') {
1163 info = add_custom_color(argv[0]);
1164 } else {
1165 info = get_line_info(argv[0]);
1166 }
1167 if (!info) {
1168 static const struct enum_map obsolete[] = {
1169 ENUM_MAP("main-delim", LINE_DELIMITER),
1170 ENUM_MAP("main-date", LINE_DATE),
1171 ENUM_MAP("main-author", LINE_AUTHOR),
1172 };
1173 int index;
1174
1175 if (!map_enum(&index, obsolete, argv[0]))
1176 return OPT_ERR_UNKNOWN_COLOR_NAME;
1177 info = &line_info[index];
1178 }
1179
1180 if (!set_color(&info->fg, argv[1]) ||
1181 !set_color(&info->bg, argv[2]))
1182 return OPT_ERR_UNKNOWN_COLOR;
1183
1184 info->attr = 0;
1185 while (argc-- > 3) {
1186 int attr;
1187
1188 if (!set_attribute(&attr, argv[argc]))
1189 return OPT_ERR_UNKNOWN_ATTRIBUTE;
1190 info->attr |= attr;
1191 }
1192
1193 return OPT_OK;
1194 }
1195
1196 static enum option_code
1197 parse_bool(bool *opt, const char *arg)
1198 {
1199 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1200 ? TRUE : FALSE;
1201 return OPT_OK;
1202 }
1203
1204 static enum option_code
1205 parse_enum_do(unsigned int *opt, const char *arg,
1206 const struct enum_map *map, size_t map_size)
1207 {
1208 bool is_true;
1209
1210 assert(map_size > 1);
1211
1212 if (map_enum_do(map, map_size, (int *) opt, arg))
1213 return OPT_OK;
1214
1215 parse_bool(&is_true, arg);
1216 *opt = is_true ? map[1].value : map[0].value;
1217 return OPT_OK;
1218 }
1219
1220 #define parse_enum(opt, arg, map) \
1221 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1222
1223 static enum option_code
1224 parse_string(char *opt, const char *arg, size_t optsize)
1225 {
1226 int arglen = strlen(arg);
1227
1228 switch (arg[0]) {
1229 case '\"':
1230 case '\'':
1231 if (arglen == 1 || arg[arglen - 1] != arg[0])
1232 return OPT_ERR_UNMATCHED_QUOTATION;
1233 arg += 1; arglen -= 2;
1234 default:
1235 string_ncopy_do(opt, optsize, arg, arglen);
1236 return OPT_OK;
1237 }
1238 }
1239
1240 static enum option_code
1241 parse_args(const char ***args, const char *argv[])
1242 {
1243 if (*args == NULL && !argv_copy(args, argv))
1244 return OPT_ERR_OUT_OF_MEMORY;
1245 return OPT_OK;
1246 }
1247
1248 /* Wants: name = value */
1249 static enum option_code
1250 option_set_command(int argc, const char *argv[])
1251 {
1252 if (argc < 3)
1253 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1254
1255 if (strcmp(argv[1], "="))
1256 return OPT_ERR_NO_VALUE_ASSIGNED;
1257
1258 if (!strcmp(argv[0], "blame-options"))
1259 return parse_args(&opt_blame_argv, argv + 2);
1260
1261 if (argc != 3)
1262 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1263
1264 if (!strcmp(argv[0], "show-author"))
1265 return parse_enum(&opt_author, argv[2], author_map);
1266
1267 if (!strcmp(argv[0], "show-date"))
1268 return parse_enum(&opt_date, argv[2], date_map);
1269
1270 if (!strcmp(argv[0], "show-rev-graph"))
1271 return parse_bool(&opt_rev_graph, argv[2]);
1272
1273 if (!strcmp(argv[0], "show-refs"))
1274 return parse_bool(&opt_show_refs, argv[2]);
1275
1276 if (!strcmp(argv[0], "show-notes")) {
1277 int res;
1278
1279 strcpy(opt_notes_arg, "--notes=");
1280 res = parse_string(opt_notes_arg + 8, argv[2],
1281 sizeof(opt_notes_arg) - 8);
1282 if (res == OPT_OK && opt_notes_arg[8] == '\0')
1283 opt_notes_arg[7] = '\0';
1284 return res;
1285 }
1286
1287 if (!strcmp(argv[0], "show-line-numbers"))
1288 return parse_bool(&opt_line_number, argv[2]);
1289
1290 if (!strcmp(argv[0], "line-graphics"))
1291 return parse_enum(&opt_line_graphics, argv[2], graphic_map);
1292
1293 if (!strcmp(argv[0], "line-number-interval"))
1294 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1295
1296 if (!strcmp(argv[0], "author-width"))
1297 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1298
1299 if (!strcmp(argv[0], "filename-width"))
1300 return parse_int(&opt_filename_cols, argv[2], 0, 1024);
1301
1302 if (!strcmp(argv[0], "show-filename"))
1303 return parse_enum(&opt_filename, argv[2], filename_map);
1304
1305 if (!strcmp(argv[0], "horizontal-scroll"))
1306 return parse_step(&opt_hscroll, argv[2]);
1307
1308 if (!strcmp(argv[0], "split-view-height"))
1309 return parse_step(&opt_scale_split_view, argv[2]);
1310
1311 if (!strcmp(argv[0], "tab-size"))
1312 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1313
1314 if (!strcmp(argv[0], "diff-context")) {
1315 enum option_code code = parse_int(&opt_diff_context, argv[2], 1, 999999);
1316
1317 if (code == OPT_OK)
1318 update_diff_context_arg(opt_diff_context);
1319 return code;
1320 }
1321
1322 if (!strcmp(argv[0], "commit-encoding"))
1323 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1324
1325 if (!strcmp(argv[0], "status-untracked-dirs"))
1326 return parse_bool(&opt_untracked_dirs_content, argv[2]);
1327
1328 return OPT_ERR_UNKNOWN_VARIABLE_NAME;
1329 }
1330
1331 /* Wants: mode request key */
1332 static enum option_code
1333 option_bind_command(int argc, const char *argv[])
1334 {
1335 enum request request;
1336 int keymap = -1;
1337 int key;
1338
1339 if (argc < 3)
1340 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1341
1342 if (!set_keymap(&keymap, argv[0]))
1343 return OPT_ERR_UNKNOWN_KEY_MAP;
1344
1345 key = get_key_value(argv[1]);
1346 if (key == ERR)
1347 return OPT_ERR_UNKNOWN_KEY;
1348
1349 request = get_request(argv[2]);
1350 if (request == REQ_UNKNOWN) {
1351 static const struct enum_map obsolete[] = {
1352 ENUM_MAP("cherry-pick", REQ_NONE),
1353 ENUM_MAP("screen-resize", REQ_NONE),
1354 ENUM_MAP("tree-parent", REQ_PARENT),
1355 };
1356 int alias;
1357
1358 if (map_enum(&alias, obsolete, argv[2])) {
1359 if (alias != REQ_NONE)
1360 add_keybinding(keymap, alias, key);
1361 return OPT_ERR_OBSOLETE_REQUEST_NAME;
1362 }
1363 }
1364 if (request == REQ_UNKNOWN && *argv[2]++ == '!')
1365 request = add_run_request(keymap, key, argv + 2);
1366 if (request == REQ_UNKNOWN)
1367 return OPT_ERR_UNKNOWN_REQUEST_NAME;
1368
1369 add_keybinding(keymap, request, key);
1370
1371 return OPT_OK;
1372 }
1373
1374 static enum option_code
1375 set_option(const char *opt, char *value)
1376 {
1377 const char *argv[SIZEOF_ARG];
1378 int argc = 0;
1379
1380 if (!argv_from_string(argv, &argc, value))
1381 return OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
1382
1383 if (!strcmp(opt, "color"))
1384 return option_color_command(argc, argv);
1385
1386 if (!strcmp(opt, "set"))
1387 return option_set_command(argc, argv);
1388
1389 if (!strcmp(opt, "bind"))
1390 return option_bind_command(argc, argv);
1391
1392 return OPT_ERR_UNKNOWN_OPTION_COMMAND;
1393 }
1394
1395 struct config_state {
1396 int lineno;
1397 bool errors;
1398 };
1399
1400 static int
1401 read_option(char *opt, size_t optlen, char *value, size_t valuelen, void *data)
1402 {
1403 struct config_state *config = data;
1404 enum option_code status = OPT_ERR_NO_OPTION_VALUE;
1405
1406 config->lineno++;
1407
1408 /* Check for comment markers, since read_properties() will
1409 * only ensure opt and value are split at first " \t". */
1410 optlen = strcspn(opt, "#");
1411 if (optlen == 0)
1412 return OK;
1413
1414 if (opt[optlen] == 0) {
1415 /* Look for comment endings in the value. */
1416 size_t len = strcspn(value, "#");
1417
1418 if (len < valuelen) {
1419 valuelen = len;
1420 value[valuelen] = 0;
1421 }
1422
1423 status = set_option(opt, value);
1424 }
1425
1426 if (status != OPT_OK) {
1427 warn("Error on line %d, near '%.*s': %s",
1428 config->lineno, (int) optlen, opt, option_errors[status]);
1429 config->errors = TRUE;
1430 }
1431
1432 /* Always keep going if errors are encountered. */
1433 return OK;
1434 }
1435
1436 static void
1437 load_option_file(const char *path)
1438 {
1439 struct config_state config = { 0, FALSE };
1440 struct io io;
1441
1442 /* It's OK that the file doesn't exist. */
1443 if (!io_open(&io, "%s", path))
1444 return;
1445
1446 if (io_load(&io, " \t", read_option, &config) == ERR ||
1447 config.errors == TRUE)
1448 warn("Errors while loading %s.", path);
1449 }
1450
1451 static int
1452 load_options(void)
1453 {
1454 const char *home = getenv("HOME");
1455 const char *tigrc_user = getenv("TIGRC_USER");
1456 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1457 const char *tig_diff_opts = getenv("TIG_DIFF_OPTS");
1458 char buf[SIZEOF_STR];
1459
1460 if (!tigrc_system)
1461 tigrc_system = SYSCONFDIR "/tigrc";
1462 load_option_file(tigrc_system);
1463
1464 if (!tigrc_user) {
1465 if (!home || !string_format(buf, "%s/.tigrc", home))
1466 return ERR;
1467 tigrc_user = buf;
1468 }
1469 load_option_file(tigrc_user);
1470
1471 /* Add _after_ loading config files to avoid adding run requests
1472 * that conflict with keybindings. */
1473 add_builtin_run_requests();
1474
1475 if (!opt_diff_argv && tig_diff_opts && *tig_diff_opts) {
1476 static const char *diff_opts[SIZEOF_ARG] = { NULL };
1477 int argc = 0;
1478
1479 if (!string_format(buf, "%s", tig_diff_opts) ||
1480 !argv_from_string(diff_opts, &argc, buf))
1481 die("TIG_DIFF_OPTS contains too many arguments");
1482 else if (!argv_copy(&opt_diff_argv, diff_opts))
1483 die("Failed to format TIG_DIFF_OPTS arguments");
1484 }
1485
1486 return OK;
1487 }
1488
1489
1490 /*
1491 * The viewer
1492 */
1493
1494 struct view;
1495 struct view_ops;
1496
1497 /* The display array of active views and the index of the current view. */
1498 static struct view *display[2];
1499 static WINDOW *display_win[2];
1500 static WINDOW *display_title[2];
1501 static unsigned int current_view;
1502
1503 #define foreach_displayed_view(view, i) \
1504 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1505
1506 #define displayed_views() (display[1] != NULL ? 2 : 1)
1507
1508 /* Current head and commit ID */
1509 static char ref_blob[SIZEOF_REF] = "";
1510 static char ref_commit[SIZEOF_REF] = "HEAD";
1511 static char ref_head[SIZEOF_REF] = "HEAD";
1512 static char ref_branch[SIZEOF_REF] = "";
1513
1514 enum view_type {
1515 VIEW_MAIN,
1516 VIEW_DIFF,
1517 VIEW_LOG,
1518 VIEW_TREE,
1519 VIEW_BLOB,
1520 VIEW_BLAME,
1521 VIEW_BRANCH,
1522 VIEW_HELP,
1523 VIEW_PAGER,
1524 VIEW_STATUS,
1525 VIEW_STAGE,
1526 };
1527
1528 struct view {
1529 enum view_type type; /* View type */
1530 const char *name; /* View name */
1531 const char *id; /* Points to either of ref_{head,commit,blob} */
1532
1533 struct view_ops *ops; /* View operations */
1534
1535 enum keymap keymap; /* What keymap does this view have */
1536 bool git_dir; /* Whether the view requires a git directory. */
1537
1538 char ref[SIZEOF_REF]; /* Hovered commit reference */
1539 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1540
1541 int height, width; /* The width and height of the main window */
1542 WINDOW *win; /* The main window */
1543
1544 /* Navigation */
1545 unsigned long offset; /* Offset of the window top */
1546 unsigned long yoffset; /* Offset from the window side. */
1547 unsigned long lineno; /* Current line number */
1548 unsigned long p_offset; /* Previous offset of the window top */
1549 unsigned long p_yoffset;/* Previous offset from the window side */
1550 unsigned long p_lineno; /* Previous current line number */
1551 bool p_restore; /* Should the previous position be restored. */
1552
1553 /* Searching */
1554 char grep[SIZEOF_STR]; /* Search string */
1555 regex_t *regex; /* Pre-compiled regexp */
1556
1557 /* If non-NULL, points to the view that opened this view. If this view
1558 * is closed tig will switch back to the parent view. */
1559 struct view *parent;
1560 struct view *prev;
1561
1562 /* Buffering */
1563 size_t lines; /* Total number of lines */
1564 struct line *line; /* Line index */
1565 unsigned int digits; /* Number of digits in the lines member. */
1566
1567 /* Drawing */
1568 struct line *curline; /* Line currently being drawn. */
1569 enum line_type curtype; /* Attribute currently used for drawing. */
1570 unsigned long col; /* Column when drawing. */
1571 bool has_scrolled; /* View was scrolled. */
1572
1573 /* Loading */
1574 const char **argv; /* Shell command arguments. */
1575 const char *dir; /* Directory from which to execute. */
1576 struct io io;
1577 struct io *pipe;
1578 time_t start_time;
1579 time_t update_secs;
1580
1581 /* Private data */
1582 void *private;
1583 };
1584
1585 enum open_flags {
1586 OPEN_DEFAULT = 0, /* Use default view switching. */
1587 OPEN_SPLIT = 1, /* Split current view. */
1588 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1589 OPEN_REFRESH = 16, /* Refresh view using previous command. */
1590 OPEN_PREPARED = 32, /* Open already prepared command. */
1591 OPEN_EXTRA = 64, /* Open extra data from command. */
1592 };
1593
1594 struct view_ops {
1595 /* What type of content being displayed. Used in the title bar. */
1596 const char *type;
1597 /* Size of private data. */
1598 size_t private_size;
1599 /* Open and reads in all view content. */
1600 bool (*open)(struct view *view, enum open_flags flags);
1601 /* Read one line; updates view->line. */
1602 bool (*read)(struct view *view, char *data);
1603 /* Draw one line; @lineno must be < view->height. */
1604 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1605 /* Depending on view handle a special requests. */
1606 enum request (*request)(struct view *view, enum request request, struct line *line);
1607 /* Search for regexp in a line. */
1608 bool (*grep)(struct view *view, struct line *line);
1609 /* Select line */
1610 void (*select)(struct view *view, struct line *line);
1611 };
1612
1613 static struct view_ops blame_ops;
1614 static struct view_ops blob_ops;
1615 static struct view_ops diff_ops;
1616 static struct view_ops help_ops;
1617 static struct view_ops log_ops;
1618 static struct view_ops main_ops;
1619 static struct view_ops pager_ops;
1620 static struct view_ops stage_ops;
1621 static struct view_ops status_ops;
1622 static struct view_ops tree_ops;
1623 static struct view_ops branch_ops;
1624
1625 #define VIEW_STR(type, name, ref, ops, map, git) \
1626 { type, name, ref, ops, map, git }
1627
1628 #define VIEW_(id, name, ops, git, ref) \
1629 VIEW_STR(VIEW_##id, name, ref, ops, KEYMAP_##id, git)
1630
1631 static struct view views[] = {
1632 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1633 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1634 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1635 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1636 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1637 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1638 VIEW_(BRANCH, "branch", &branch_ops, TRUE, ref_head),
1639 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1640 VIEW_(PAGER, "pager", &pager_ops, FALSE, ""),
1641 VIEW_(STATUS, "status", &status_ops, TRUE, "status"),
1642 VIEW_(STAGE, "stage", &stage_ops, TRUE, "stage"),
1643 };
1644
1645 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1646
1647 #define foreach_view(view, i) \
1648 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1649
1650 #define view_is_displayed(view) \
1651 (view == display[0] || view == display[1])
1652
1653 static enum request
1654 view_request(struct view *view, enum request request)
1655 {
1656 if (!view || !view->lines)
1657 return request;
1658 return view->ops->request(view, request, &view->line[view->lineno]);
1659 }
1660
1661
1662 /*
1663 * View drawing.
1664 */
1665
1666 static inline void
1667 set_view_attr(struct view *view, enum line_type type)
1668 {
1669 if (!view->curline->selected && view->curtype != type) {
1670 (void) wattrset(view->win, get_line_attr(type));
1671 wchgat(view->win, -1, 0, COLOR_ID(type), NULL);
1672 view->curtype = type;
1673 }
1674 }
1675
1676 #define VIEW_MAX_LEN(view) ((view)->width + (view)->yoffset - (view)->col)
1677
1678 static bool
1679 draw_chars(struct view *view, enum line_type type, const char *string,
1680 int max_len, bool use_tilde)
1681 {
1682 static char out_buffer[BUFSIZ * 2];
1683 int len = 0;
1684 int col = 0;
1685 int trimmed = FALSE;
1686 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1687
1688 if (max_len <= 0)
1689 return VIEW_MAX_LEN(view) <= 0;
1690
1691 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1692
1693 set_view_attr(view, type);
1694 if (len > 0) {
1695 if (opt_iconv_out != ICONV_NONE) {
1696 size_t inlen = len + 1;
1697 char *instr = calloc(1, inlen);
1698 ICONV_CONST char *inbuf = (ICONV_CONST char *) instr;
1699 if (!instr)
1700 return VIEW_MAX_LEN(view) <= 0;
1701
1702 strncpy(instr, string, len);
1703
1704 char *outbuf = out_buffer;
1705 size_t outlen = sizeof(out_buffer);
1706
1707 size_t ret;
1708
1709 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1710 if (ret != (size_t) -1) {
1711 string = out_buffer;
1712 len = sizeof(out_buffer) - outlen;
1713 }
1714 free(instr);
1715 }
1716
1717 waddnstr(view->win, string, len);
1718
1719 if (trimmed && use_tilde) {
1720 set_view_attr(view, LINE_DELIMITER);
1721 waddch(view->win, '~');
1722 col++;
1723 }
1724 }
1725
1726 view->col += col;
1727 return VIEW_MAX_LEN(view) <= 0;
1728 }
1729
1730 static bool
1731 draw_space(struct view *view, enum line_type type, int max, int spaces)
1732 {
1733 static char space[] = " ";
1734
1735 spaces = MIN(max, spaces);
1736
1737 while (spaces > 0) {
1738 int len = MIN(spaces, sizeof(space) - 1);
1739
1740 if (draw_chars(view, type, space, len, FALSE))
1741 return TRUE;
1742 spaces -= len;
1743 }
1744
1745 return VIEW_MAX_LEN(view) <= 0;
1746 }
1747
1748 static bool
1749 draw_text(struct view *view, enum line_type type, const char *string)
1750 {
1751 char text[SIZEOF_STR];
1752
1753 do {
1754 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1755
1756 if (draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE))
1757 return TRUE;
1758 string += pos;
1759 } while (*string);
1760
1761 return VIEW_MAX_LEN(view) <= 0;
1762 }
1763
1764 static bool
1765 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
1766 {
1767 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1768 int max = VIEW_MAX_LEN(view);
1769 int i;
1770
1771 if (max < size)
1772 size = max;
1773
1774 set_view_attr(view, type);
1775 /* Using waddch() instead of waddnstr() ensures that
1776 * they'll be rendered correctly for the cursor line. */
1777 for (i = skip; i < size; i++)
1778 waddch(view->win, graphic[i]);
1779
1780 view->col += size;
1781 if (separator) {
1782 if (size < max && skip <= size)
1783 waddch(view->win, ' ');
1784 view->col++;
1785 }
1786
1787 return VIEW_MAX_LEN(view) <= 0;
1788 }
1789
1790 static bool
1791 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1792 {
1793 int max = MIN(VIEW_MAX_LEN(view), len);
1794 int col = view->col;
1795
1796 if (!text)
1797 return draw_space(view, type, max, max);
1798
1799 return draw_chars(view, type, text, max - 1, trim)
1800 || draw_space(view, LINE_DEFAULT, max - (view->col - col), max);
1801 }
1802
1803 static bool
1804 draw_date(struct view *view, struct time *time)
1805 {
1806 const char *date = mkdate(time, opt_date);
1807 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
1808
1809 if (opt_date == DATE_NO)
1810 return FALSE;
1811
1812 return draw_field(view, LINE_DATE, date, cols, FALSE);
1813 }
1814
1815 static bool
1816 draw_author(struct view *view, const char *author)
1817 {
1818 bool trim = author_trim(opt_author_cols);
1819 const char *text = mkauthor(author, opt_author_cols, opt_author);
1820
1821 if (opt_author == AUTHOR_NO)
1822 return FALSE;
1823
1824 return draw_field(view, LINE_AUTHOR, text, opt_author_cols, trim);
1825 }
1826
1827 static bool
1828 draw_filename(struct view *view, const char *filename, bool auto_enabled)
1829 {
1830 bool trim = filename && strlen(filename) >= opt_filename_cols;
1831
1832 if (opt_filename == FILENAME_NO)
1833 return FALSE;
1834
1835 if (opt_filename == FILENAME_AUTO && !auto_enabled)
1836 return FALSE;
1837
1838 return draw_field(view, LINE_FILENAME, filename, opt_filename_cols, trim);
1839 }
1840
1841 static bool
1842 draw_mode(struct view *view, mode_t mode)
1843 {
1844 const char *str = mkmode(mode);
1845
1846 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
1847 }
1848
1849 static bool
1850 draw_lineno(struct view *view, unsigned int lineno)
1851 {
1852 char number[10];
1853 int digits3 = view->digits < 3 ? 3 : view->digits;
1854 int max = MIN(VIEW_MAX_LEN(view), digits3);
1855 char *text = NULL;
1856 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
1857
1858 lineno += view->offset + 1;
1859 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1860 static char fmt[] = "%1ld";
1861
1862 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
1863 if (string_format(number, fmt, lineno))
1864 text = number;
1865 }
1866 if (text)
1867 draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
1868 else
1869 draw_space(view, LINE_LINE_NUMBER, max, digits3);
1870 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
1871 }
1872
1873 static bool
1874 draw_refs(struct view *view, struct ref_list *refs)
1875 {
1876 size_t i;
1877
1878 if (!opt_show_refs || !refs)
1879 return FALSE;
1880
1881 for (i = 0; i < refs->size; i++) {
1882 struct ref *ref = refs->refs[i];
1883 enum line_type type = get_line_type_from_ref(ref);
1884
1885 if (draw_text(view, type, "[") ||
1886 draw_text(view, type, ref->name) ||
1887 draw_text(view, type, "]"))
1888 return TRUE;
1889
1890 if (draw_text(view, LINE_DEFAULT, " "))
1891 return TRUE;
1892 }
1893
1894 return FALSE;
1895 }
1896
1897 static bool
1898 draw_view_line(struct view *view, unsigned int lineno)
1899 {
1900 struct line *line;
1901 bool selected = (view->offset + lineno == view->lineno);
1902
1903 assert(view_is_displayed(view));
1904
1905 if (view->offset + lineno >= view->lines)
1906 return FALSE;
1907
1908 line = &view->line[view->offset + lineno];
1909
1910 wmove(view->win, lineno, 0);
1911 if (line->cleareol)
1912 wclrtoeol(view->win);
1913 view->col = 0;
1914 view->curline = line;
1915 view->curtype = LINE_NONE;
1916 line->selected = FALSE;
1917 line->dirty = line->cleareol = 0;
1918
1919 if (selected) {
1920 set_view_attr(view, LINE_CURSOR);
1921 line->selected = TRUE;
1922 view->ops->select(view, line);
1923 }
1924
1925 return view->ops->draw(view, line, lineno);
1926 }
1927
1928 static void
1929 redraw_view_dirty(struct view *view)
1930 {
1931 bool dirty = FALSE;
1932 int lineno;
1933
1934 for (lineno = 0; lineno < view->height; lineno++) {
1935 if (view->offset + lineno >= view->lines)
1936 break;
1937 if (!view->line[view->offset + lineno].dirty)
1938 continue;
1939 dirty = TRUE;
1940 if (!draw_view_line(view, lineno))
1941 break;
1942 }
1943
1944 if (!dirty)
1945 return;
1946 wnoutrefresh(view->win);
1947 }
1948
1949 static void
1950 redraw_view_from(struct view *view, int lineno)
1951 {
1952 assert(0 <= lineno && lineno < view->height);
1953
1954 for (; lineno < view->height; lineno++) {
1955 if (!draw_view_line(view, lineno))
1956 break;
1957 }
1958
1959 wnoutrefresh(view->win);
1960 }
1961
1962 static void
1963 redraw_view(struct view *view)
1964 {
1965 werase(view->win);
1966 redraw_view_from(view, 0);
1967 }
1968
1969
1970 static void
1971 update_view_title(struct view *view)
1972 {
1973 char buf[SIZEOF_STR];
1974 char state[SIZEOF_STR];
1975 size_t bufpos = 0, statelen = 0;
1976 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
1977
1978 assert(view_is_displayed(view));
1979
1980 if (view->type != VIEW_STATUS && view->lines) {
1981 unsigned int view_lines = view->offset + view->height;
1982 unsigned int lines = view->lines
1983 ? MIN(view_lines, view->lines) * 100 / view->lines
1984 : 0;
1985
1986 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
1987 view->ops->type,
1988 view->lineno + 1,
1989 view->lines,
1990 lines);
1991
1992 }
1993
1994 if (view->pipe) {
1995 time_t secs = time(NULL) - view->start_time;
1996
1997 /* Three git seconds are a long time ... */
1998 if (secs > 2)
1999 string_format_from(state, &statelen, " loading %lds", secs);
2000 }
2001
2002 string_format_from(buf, &bufpos, "[%s]", view->name);
2003 if (*view->ref && bufpos < view->width) {
2004 size_t refsize = strlen(view->ref);
2005 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2006
2007 if (minsize < view->width)
2008 refsize = view->width - minsize + 7;
2009 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2010 }
2011
2012 if (statelen && bufpos < view->width) {
2013 string_format_from(buf, &bufpos, "%s", state);
2014 }
2015
2016 if (view == display[current_view])
2017 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
2018 else
2019 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
2020
2021 mvwaddnstr(window, 0, 0, buf, bufpos);
2022 wclrtoeol(window);
2023 wnoutrefresh(window);
2024 }
2025
2026 static int
2027 apply_step(double step, int value)
2028 {
2029 if (step >= 1)
2030 return (int) step;
2031 value *= step + 0.01;
2032 return value ? value : 1;
2033 }
2034
2035 static void
2036 resize_display(void)
2037 {
2038 int offset, i;
2039 struct view *base = display[0];
2040 struct view *view = display[1] ? display[1] : display[0];
2041
2042 /* Setup window dimensions */
2043
2044 getmaxyx(stdscr, base->height, base->width);
2045
2046 /* Make room for the status window. */
2047 base->height -= 1;
2048
2049 if (view != base) {
2050 /* Horizontal split. */
2051 view->width = base->width;
2052 view->height = apply_step(opt_scale_split_view, base->height);
2053 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
2054 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
2055 base->height -= view->height;
2056
2057 /* Make room for the title bar. */
2058 view->height -= 1;
2059 }
2060
2061 /* Make room for the title bar. */
2062 base->height -= 1;
2063
2064 offset = 0;
2065
2066 foreach_displayed_view (view, i) {
2067 if (!display_win[i]) {
2068 display_win[i] = newwin(view->height, view->width, offset, 0);
2069 if (!display_win[i])
2070 die("Failed to create %s view", view->name);
2071
2072 scrollok(display_win[i], FALSE);
2073
2074 display_title[i] = newwin(1, view->width, offset + view->height, 0);
2075 if (!display_title[i])
2076 die("Failed to create title window");
2077
2078 } else {
2079 wresize(display_win[i], view->height, view->width);
2080 mvwin(display_win[i], offset, 0);
2081 mvwin(display_title[i], offset + view->height, 0);
2082 }
2083
2084 view->win = display_win[i];
2085
2086 offset += view->height + 1;
2087 }
2088 }
2089
2090 static void
2091 redraw_display(bool clear)
2092 {
2093 struct view *view;
2094 int i;
2095
2096 foreach_displayed_view (view, i) {
2097 if (clear)
2098 wclear(view->win);
2099 redraw_view(view);
2100 update_view_title(view);
2101 }
2102 }
2103
2104
2105 /*
2106 * Option management
2107 */
2108
2109 #define TOGGLE_MENU \
2110 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
2111 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
2112 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
2113 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
2114 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
2115 TOGGLE_(FILENAME, '#', "file names", &opt_filename, filename_map) \
2116 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
2117
2118 static void
2119 toggle_option(enum request request)
2120 {
2121 const struct {
2122 enum request request;
2123 const struct enum_map *map;
2124 size_t map_size;
2125 } data[] = {
2126 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
2127 TOGGLE_MENU
2128 #undef TOGGLE_
2129 };
2130 const struct menu_item menu[] = {
2131 #define TOGGLE_(id, key, help, value, map) { key, help, value },
2132 TOGGLE_MENU
2133 #undef TOGGLE_
2134 { 0 }
2135 };
2136 int i = 0;
2137
2138 if (request == REQ_OPTIONS) {
2139 if (!prompt_menu("Toggle option", menu, &i))
2140 return;
2141 } else {
2142 while (i < ARRAY_SIZE(data) && data[i].request != request)
2143 i++;
2144 if (i >= ARRAY_SIZE(data))
2145 die("Invalid request (%d)", request);
2146 }
2147
2148 if (data[i].map != NULL) {
2149 unsigned int *opt = menu[i].data;
2150
2151 *opt = (*opt + 1) % data[i].map_size;
2152 redraw_display(FALSE);
2153 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
2154
2155 } else {
2156 bool *option = menu[i].data;
2157
2158 *option = !*option;
2159 redraw_display(FALSE);
2160 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
2161 }
2162 }
2163
2164 static void
2165 maximize_view(struct view *view, bool redraw)
2166 {
2167 memset(display, 0, sizeof(display));
2168 current_view = 0;
2169 display[current_view] = view;
2170 resize_display();
2171 if (redraw) {
2172 redraw_display(FALSE);
2173 report("");
2174 }
2175 }
2176
2177
2178 /*
2179 * Navigation
2180 */
2181
2182 static bool
2183 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2184 {
2185 if (lineno >= view->lines)
2186 lineno = view->lines > 0 ? view->lines - 1 : 0;
2187
2188 if (offset > lineno || offset + view->height <= lineno) {
2189 unsigned long half = view->height / 2;
2190
2191 if (lineno > half)
2192 offset = lineno - half;
2193 else
2194 offset = 0;
2195 }
2196
2197 if (offset != view->offset || lineno != view->lineno) {
2198 view->offset = offset;
2199 view->lineno = lineno;
2200 return TRUE;
2201 }
2202
2203 return FALSE;
2204 }
2205
2206 /* Scrolling backend */
2207 static void
2208 do_scroll_view(struct view *view, int lines)
2209 {
2210 bool redraw_current_line = FALSE;
2211
2212 /* The rendering expects the new offset. */
2213 view->offset += lines;
2214
2215 assert(0 <= view->offset && view->offset < view->lines);
2216 assert(lines);
2217
2218 /* Move current line into the view. */
2219 if (view->lineno < view->offset) {
2220 view->lineno = view->offset;
2221 redraw_current_line = TRUE;
2222 } else if (view->lineno >= view->offset + view->height) {
2223 view->lineno = view->offset + view->height - 1;
2224 redraw_current_line = TRUE;
2225 }
2226
2227 assert(view->offset <= view->lineno && view->lineno < view->lines);
2228
2229 /* Redraw the whole screen if scrolling is pointless. */
2230 if (view->height < ABS(lines)) {
2231 redraw_view(view);
2232
2233 } else {
2234 int line = lines > 0 ? view->height - lines : 0;
2235 int end = line + ABS(lines);
2236
2237 scrollok(view->win, TRUE);
2238 wscrl(view->win, lines);
2239 scrollok(view->win, FALSE);
2240
2241 while (line < end && draw_view_line(view, line))
2242 line++;
2243
2244 if (redraw_current_line)
2245 draw_view_line(view, view->lineno - view->offset);
2246 wnoutrefresh(view->win);
2247 }
2248
2249 view->has_scrolled = TRUE;
2250 report("");
2251 }
2252
2253 /* Scroll frontend */
2254 static void
2255 scroll_view(struct view *view, enum request request)
2256 {
2257 int lines = 1;
2258
2259 assert(view_is_displayed(view));
2260
2261 switch (request) {
2262 case REQ_SCROLL_FIRST_COL:
2263 view->yoffset = 0;
2264 redraw_view_from(view, 0);
2265 report("");
2266 return;
2267 case REQ_SCROLL_LEFT:
2268 if (view->yoffset == 0) {
2269 report("Cannot scroll beyond the first column");
2270 return;
2271 }
2272 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2273 view->yoffset = 0;
2274 else
2275 view->yoffset -= apply_step(opt_hscroll, view->width);
2276 redraw_view_from(view, 0);
2277 report("");
2278 return;
2279 case REQ_SCROLL_RIGHT:
2280 view->yoffset += apply_step(opt_hscroll, view->width);
2281 redraw_view(view);
2282 report("");
2283 return;
2284 case REQ_SCROLL_PAGE_DOWN:
2285 lines = view->height;
2286 case REQ_SCROLL_LINE_DOWN:
2287 if (view->offset + lines > view->lines)
2288 lines = view->lines - view->offset;
2289
2290 if (lines == 0 || view->offset + view->height >= view->lines) {
2291 report("Cannot scroll beyond the last line");
2292 return;
2293 }
2294 break;
2295
2296 case REQ_SCROLL_PAGE_UP:
2297 lines = view->height;
2298 case REQ_SCROLL_LINE_UP:
2299 if (lines > view->offset)
2300 lines = view->offset;
2301
2302 if (lines == 0) {
2303 report("Cannot scroll beyond the first line");
2304 return;
2305 }
2306
2307 lines = -lines;
2308 break;
2309
2310 default:
2311 die("request %d not handled in switch", request);
2312 }
2313
2314 do_scroll_view(view, lines);
2315 }
2316
2317 /* Cursor moving */
2318 static void
2319 move_view(struct view *view, enum request request)
2320 {
2321 int scroll_steps = 0;
2322 int steps;
2323
2324 switch (request) {
2325 case REQ_MOVE_FIRST_LINE:
2326 steps = -view->lineno;
2327 break;
2328
2329 case REQ_MOVE_LAST_LINE:
2330 steps = view->lines - view->lineno - 1;
2331 break;
2332
2333 case REQ_MOVE_PAGE_UP:
2334 steps = view->height > view->lineno
2335 ? -view->lineno : -view->height;
2336 break;
2337
2338 case REQ_MOVE_PAGE_DOWN:
2339 steps = view->lineno + view->height >= view->lines
2340 ? view->lines - view->lineno - 1 : view->height;
2341 break;
2342
2343 case REQ_MOVE_UP:
2344 steps = -1;
2345 break;
2346
2347 case REQ_MOVE_DOWN:
2348 steps = 1;
2349 break;
2350
2351 default:
2352 die("request %d not handled in switch", request);
2353 }
2354
2355 if (steps <= 0 && view->lineno == 0) {
2356 report("Cannot move beyond the first line");
2357 return;
2358
2359 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2360 report("Cannot move beyond the last line");
2361 return;
2362 }
2363
2364 /* Move the current line */
2365 view->lineno += steps;
2366 assert(0 <= view->lineno && view->lineno < view->lines);
2367
2368 /* Check whether the view needs to be scrolled */
2369 if (view->lineno < view->offset ||
2370 view->lineno >= view->offset + view->height) {
2371 scroll_steps = steps;
2372 if (steps < 0 && -steps > view->offset) {
2373 scroll_steps = -view->offset;
2374
2375 } else if (steps > 0) {
2376 if (view->lineno == view->lines - 1 &&
2377 view->lines > view->height) {
2378 scroll_steps = view->lines - view->offset - 1;
2379 if (scroll_steps >= view->height)
2380 scroll_steps -= view->height - 1;
2381 }
2382 }
2383 }
2384
2385 if (!view_is_displayed(view)) {
2386 view->offset += scroll_steps;
2387 assert(0 <= view->offset && view->offset < view->lines);
2388 view->ops->select(view, &view->line[view->lineno]);
2389 return;
2390 }
2391
2392 /* Repaint the old "current" line if we be scrolling */
2393 if (ABS(steps) < view->height)
2394 draw_view_line(view, view->lineno - steps - view->offset);
2395
2396 if (scroll_steps) {
2397 do_scroll_view(view, scroll_steps);
2398 return;
2399 }
2400
2401 /* Draw the current line */
2402 draw_view_line(view, view->lineno - view->offset);
2403
2404 wnoutrefresh(view->win);
2405 report("");
2406 }
2407
2408
2409 /*
2410 * Searching
2411 */
2412
2413 static void search_view(struct view *view, enum request request);
2414
2415 static bool
2416 grep_text(struct view *view, const char *text[])
2417 {
2418 regmatch_t pmatch;
2419 size_t i;
2420
2421 for (i = 0; text[i]; i++)
2422 if (*text[i] &&
2423 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2424 return TRUE;
2425 return FALSE;
2426 }
2427
2428 static void
2429 select_view_line(struct view *view, unsigned long lineno)
2430 {
2431 unsigned long old_lineno = view->lineno;
2432 unsigned long old_offset = view->offset;
2433
2434 if (goto_view_line(view, view->offset, lineno)) {
2435 if (view_is_displayed(view)) {
2436 if (old_offset != view->offset) {
2437 redraw_view(view);
2438 } else {
2439 draw_view_line(view, old_lineno - view->offset);
2440 draw_view_line(view, view->lineno - view->offset);
2441 wnoutrefresh(view->win);
2442 }
2443 } else {
2444 view->ops->select(view, &view->line[view->lineno]);
2445 }
2446 }
2447 }
2448
2449 static void
2450 find_next(struct view *view, enum request request)
2451 {
2452 unsigned long lineno = view->lineno;
2453 int direction;
2454
2455 if (!*view->grep) {
2456 if (!*opt_search)
2457 report("No previous search");
2458 else
2459 search_view(view, request);
2460 return;
2461 }
2462
2463 switch (request) {
2464 case REQ_SEARCH:
2465 case REQ_FIND_NEXT:
2466 direction = 1;
2467 break;
2468
2469 case REQ_SEARCH_BACK:
2470 case REQ_FIND_PREV:
2471 direction = -1;
2472 break;
2473
2474 default:
2475 return;
2476 }
2477
2478 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2479 lineno += direction;
2480
2481 /* Note, lineno is unsigned long so will wrap around in which case it
2482 * will become bigger than view->lines. */
2483 for (; lineno < view->lines; lineno += direction) {
2484 if (view->ops->grep(view, &view->line[lineno])) {
2485 select_view_line(view, lineno);
2486 report("Line %ld matches '%s'", lineno + 1, view->grep);
2487 return;
2488 }
2489 }
2490
2491 report("No match found for '%s'", view->grep);
2492 }
2493
2494 static void
2495 search_view(struct view *view, enum request request)
2496 {
2497 int regex_err;
2498
2499 if (view->regex) {
2500 regfree(view->regex);
2501 *view->grep = 0;
2502 } else {
2503 view->regex = calloc(1, sizeof(*view->regex));
2504 if (!view->regex)
2505 return;
2506 }
2507
2508 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2509 if (regex_err != 0) {
2510 char buf[SIZEOF_STR] = "unknown error";
2511
2512 regerror(regex_err, view->regex, buf, sizeof(buf));
2513 report("Search failed: %s", buf);
2514 return;
2515 }
2516
2517 string_copy(view->grep, opt_search);
2518
2519 find_next(view, request);
2520 }
2521
2522 /*
2523 * Incremental updating
2524 */
2525
2526 static void
2527 reset_view(struct view *view)
2528 {
2529 int i;
2530
2531 for (i = 0; i < view->lines; i++)
2532 free(view->line[i].data);
2533 free(view->line);
2534
2535 view->p_offset = view->offset;
2536 view->p_yoffset = view->yoffset;
2537 view->p_lineno = view->lineno;
2538
2539 view->line = NULL;
2540 view->offset = 0;
2541 view->yoffset = 0;
2542 view->lines = 0;
2543 view->lineno = 0;
2544 view->vid[0] = 0;
2545 view->update_secs = 0;
2546 }
2547
2548 static const char *
2549 format_arg(const char *name)
2550 {
2551 static struct {
2552 const char *name;
2553 size_t namelen;
2554 const char *value;
2555 const char *value_if_empty;
2556 } vars[] = {
2557 #define FORMAT_VAR(name, value, value_if_empty) \
2558 { name, STRING_SIZE(name), value, value_if_empty }
2559 FORMAT_VAR("%(directory)", opt_path, "."),
2560 FORMAT_VAR("%(file)", opt_file, ""),
2561 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2562 FORMAT_VAR("%(head)", ref_head, ""),
2563 FORMAT_VAR("%(commit)", ref_commit, ""),
2564 FORMAT_VAR("%(blob)", ref_blob, ""),
2565 FORMAT_VAR("%(branch)", ref_branch, ""),
2566 };
2567 int i;
2568
2569 for (i = 0; i < ARRAY_SIZE(vars); i++)
2570 if (!strncmp(name, vars[i].name, vars[i].namelen))
2571 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2572
2573 report("Unknown replacement: `%s`", name);
2574 return NULL;
2575 }
2576
2577 static bool
2578 format_argv(const char ***dst_argv, const char *src_argv[], bool first)
2579 {
2580 char buf[SIZEOF_STR];
2581 int argc;
2582
2583 argv_free(*dst_argv);
2584
2585 for (argc = 0; src_argv[argc]; argc++) {
2586 const char *arg = src_argv[argc];
2587 size_t bufpos = 0;
2588
2589 if (!strcmp(arg, "%(fileargs)")) {
2590 if (!argv_append_array(dst_argv, opt_file_argv))
2591 break;
2592 continue;
2593
2594 } else if (!strcmp(arg, "%(diffargs)")) {
2595 if (!argv_append_array(dst_argv, opt_diff_argv))
2596 break;
2597 continue;
2598
2599 } else if (!strcmp(arg, "%(blameargs)")) {
2600 if (!argv_append_array(dst_argv, opt_blame_argv))
2601 break;
2602 continue;
2603
2604 } else if (!strcmp(arg, "%(revargs)") ||
2605 (first && !strcmp(arg, "%(commit)"))) {
2606 if (!argv_append_array(dst_argv, opt_rev_argv))
2607 break;
2608 continue;
2609 }
2610
2611 while (arg) {
2612 char *next = strstr(arg, "%(");
2613 int len = next - arg;
2614 const char *value;
2615
2616 if (!next) {
2617 len = strlen(arg);
2618 value = "";
2619
2620 } else {
2621 value = format_arg(next);
2622
2623 if (!value) {
2624 return FALSE;
2625 }
2626 }
2627
2628 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2629 return FALSE;
2630
2631 arg = next ? strchr(next, ')') + 1 : NULL;
2632 }
2633
2634 if (!argv_append(dst_argv, buf))
2635 break;
2636 }
2637
2638 return src_argv[argc] == NULL;
2639 }
2640
2641 static bool
2642 restore_view_position(struct view *view)
2643 {
2644 /* A view without a previous view is the first view */
2645 if (!view->prev && opt_lineno && opt_lineno <= view->lines) {
2646 select_view_line(view, opt_lineno - 1);
2647 opt_lineno = 0;
2648 }
2649
2650 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2651 return FALSE;
2652
2653 /* Changing the view position cancels the restoring. */
2654 /* FIXME: Changing back to the first line is not detected. */
2655 if (view->offset != 0 || view->lineno != 0) {
2656 view->p_restore = FALSE;
2657 return FALSE;
2658 }
2659
2660 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2661 view_is_displayed(view))
2662 werase(view->win);
2663
2664 view->yoffset = view->p_yoffset;
2665 view->p_restore = FALSE;
2666
2667 return TRUE;
2668 }
2669
2670 static void
2671 end_update(struct view *view, bool force)
2672 {
2673 if (!view->pipe)
2674 return;
2675 while (!view->ops->read(view, NULL))
2676 if (!force)
2677 return;
2678 if (force)
2679 io_kill(view->pipe);
2680 io_done(view->pipe);
2681 view->pipe = NULL;
2682 }
2683
2684 static void
2685 setup_update(struct view *view, const char *vid)
2686 {
2687 reset_view(view);
2688 string_copy_rev(view->vid, vid);
2689 view->pipe = &view->io;
2690 view->start_time = time(NULL);
2691 }
2692
2693 static bool
2694 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
2695 {
2696 bool extra = !!(flags & (OPEN_EXTRA));
2697 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED | OPEN_EXTRA));
2698 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2699
2700 if (!reload && !strcmp(view->vid, view->id))
2701 return TRUE;
2702
2703 if (view->pipe) {
2704 if (extra)
2705 io_done(view->pipe);
2706 else
2707 end_update(view, TRUE);
2708 }
2709
2710 if (!refresh && argv) {
2711 view->dir = dir;
2712 if (!format_argv(&view->argv, argv, !view->prev))
2713 return FALSE;
2714
2715 /* Put the current ref_* value to the view title ref
2716 * member. This is needed by the blob view. Most other
2717 * views sets it automatically after loading because the
2718 * first line is a commit line. */
2719 string_copy_rev(view->ref, view->id);
2720 }
2721
2722 if (view->argv && view->argv[0] &&
2723 !io_run(&view->io, IO_RD, view->dir, view->argv))
2724 return FALSE;
2725
2726 if (!extra)
2727 setup_update(view, view->id);
2728
2729 return TRUE;
2730 }
2731
2732 static bool
2733 update_view(struct view *view)
2734 {
2735 char out_buffer[BUFSIZ * 2];
2736 char *line;
2737 /* Clear the view and redraw everything since the tree sorting
2738 * might have rearranged things. */
2739 bool redraw = view->lines == 0;
2740 bool can_read = TRUE;
2741
2742 if (!view->pipe)
2743 return TRUE;
2744
2745 if (!io_can_read(view->pipe, FALSE)) {
2746 if (view->lines == 0 && view_is_displayed(view)) {
2747 time_t secs = time(NULL) - view->start_time;
2748
2749 if (secs > 1 && secs > view->update_secs) {
2750 if (view->update_secs == 0)
2751 redraw_view(view);
2752 update_view_title(view);
2753 view->update_secs = secs;
2754 }
2755 }
2756 return TRUE;
2757 }
2758
2759 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2760 if (opt_iconv_in != ICONV_NONE) {
2761 ICONV_CONST char *inbuf = line;
2762 size_t inlen = strlen(line) + 1;
2763
2764 char *outbuf = out_buffer;
2765 size_t outlen = sizeof(out_buffer);
2766
2767 size_t ret;
2768
2769 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2770 if (ret != (size_t) -1)
2771 line = out_buffer;
2772 }
2773
2774 if (!view->ops->read(view, line)) {
2775 report("Allocation failure");
2776 end_update(view, TRUE);
2777 return FALSE;
2778 }
2779 }
2780
2781 {
2782 unsigned long lines = view->lines;
2783 int digits;
2784
2785 for (digits = 0; lines; digits++)
2786 lines /= 10;
2787
2788 /* Keep the displayed view in sync with line number scaling. */
2789 if (digits != view->digits) {
2790 view->digits = digits;
2791 if (opt_line_number || view->type == VIEW_BLAME)
2792 redraw = TRUE;
2793 }
2794 }
2795
2796 if (io_error(view->pipe)) {
2797 report("Failed to read: %s", io_strerror(view->pipe));
2798 end_update(view, TRUE);
2799
2800 } else if (io_eof(view->pipe)) {
2801 if (view_is_displayed(view))
2802 report("");
2803 end_update(view, FALSE);
2804 }
2805
2806 if (restore_view_position(view))
2807 redraw = TRUE;
2808
2809 if (!view_is_displayed(view))
2810 return TRUE;
2811
2812 if (redraw)
2813 redraw_view_from(view, 0);
2814 else
2815 redraw_view_dirty(view);
2816
2817 /* Update the title _after_ the redraw so that if the redraw picks up a
2818 * commit reference in view->ref it'll be available here. */
2819 update_view_title(view);
2820 return TRUE;
2821 }
2822
2823 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2824
2825 static struct line *
2826 add_line_data(struct view *view, void *data, enum line_type type)
2827 {
2828 struct line *line;
2829
2830 if (!realloc_lines(&view->line, view->lines, 1))
2831 return NULL;
2832
2833 line = &view->line[view->lines++];
2834 memset(line, 0, sizeof(*line));
2835 line->type = type;
2836 line->data = data;
2837 line->dirty = 1;
2838
2839 return line;
2840 }
2841
2842 static struct line *
2843 add_line_text(struct view *view, const char *text, enum line_type type)
2844 {
2845 char *data = text ? strdup(text) : NULL;
2846
2847 return data ? add_line_data(view, data, type) : NULL;
2848 }
2849
2850 static struct line *
2851 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2852 {
2853 char buf[SIZEOF_STR];
2854 int retval;
2855
2856 FORMAT_BUFFER(buf, sizeof(buf), fmt, retval);
2857 return retval >= 0 ? add_line_text(view, buf, type) : NULL;
2858 }
2859
2860 /*
2861 * View opening
2862 */
2863
2864 static void
2865 load_view(struct view *view, enum open_flags flags)
2866 {
2867 if (view->pipe)
2868 end_update(view, TRUE);
2869 if (view->ops->private_size) {
2870 if (!view->private)
2871 view->private = calloc(1, view->ops->private_size);
2872 else
2873 memset(view->private, 0, view->ops->private_size);
2874 }
2875 if (!view->ops->open(view, flags)) {
2876 report("Failed to load %s view", view->name);
2877 return;
2878 }
2879 restore_view_position(view);
2880
2881 if (view->pipe && view->lines == 0) {
2882 /* Clear the old view and let the incremental updating refill
2883 * the screen. */
2884 werase(view->win);
2885 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2886 report("");
2887 } else if (view_is_displayed(view)) {
2888 redraw_view(view);
2889 report("");
2890 }
2891 }
2892
2893 #define refresh_view(view) load_view(view, OPEN_REFRESH)
2894 #define reload_view(view) load_view(view, OPEN_RELOAD)
2895
2896 static void
2897 split_view(struct view *prev, struct view *view)
2898 {
2899 display[1] = view;
2900 current_view = 1;
2901 view->parent = prev;
2902 resize_display();
2903
2904 if (prev->lineno - prev->offset >= prev->height) {
2905 /* Take the title line into account. */
2906 int lines = prev->lineno - prev->offset - prev->height + 1;
2907
2908 /* Scroll the view that was split if the current line is
2909 * outside the new limited view. */
2910 do_scroll_view(prev, lines);
2911 }
2912
2913 if (view != prev && view_is_displayed(prev)) {
2914 /* "Blur" the previous view. */
2915 update_view_title(prev);
2916 }
2917 }
2918
2919 static void
2920 open_view(struct view *prev, enum request request, enum open_flags flags)
2921 {
2922 bool split = !!(flags & OPEN_SPLIT);
2923 bool reload = !!(flags & (OPEN_RELOAD | OPEN_PREPARED));
2924 struct view *view = VIEW(request);
2925 int nviews = displayed_views();
2926
2927 assert(flags ^ OPEN_REFRESH);
2928
2929 if (view == prev && nviews == 1 && !reload) {
2930 report("Already in %s view", view->name);
2931 return;
2932 }
2933
2934 if (view->git_dir && !opt_git_dir[0]) {
2935 report("The %s view is disabled in pager view", view->name);
2936 return;
2937 }
2938
2939 if (split) {
2940 split_view(prev, view);
2941 } else {
2942 maximize_view(view, FALSE);
2943 }
2944
2945 /* No prev signals that this is the first loaded view. */
2946 if (prev && view != prev) {
2947 view->prev = prev;
2948 }
2949
2950 load_view(view, flags);
2951 }
2952
2953 static void
2954 open_argv(struct view *prev, struct view *view, const char *argv[], const char *dir, enum open_flags flags)
2955 {
2956 enum request request = view - views + REQ_OFFSET + 1;
2957
2958 if (view->pipe)
2959 end_update(view, TRUE);
2960 view->dir = dir;
2961
2962 if (!argv_copy(&view->argv, argv)) {
2963 report("Failed to open %s view: %s", view->name, io_strerror(&view->io));
2964 } else {
2965 open_view(prev, request, flags | OPEN_PREPARED);
2966 }
2967 }
2968
2969 static void
2970 open_external_viewer(const char *argv[], const char *dir)
2971 {
2972 def_prog_mode(); /* save current tty modes */
2973 endwin(); /* restore original tty modes */
2974 io_run_fg(argv, dir);
2975 fprintf(stderr, "Press Enter to continue");
2976 getc(opt_tty);
2977 reset_prog_mode();
2978 redraw_display(TRUE);
2979 }
2980
2981 static void
2982 open_mergetool(const char *file)
2983 {
2984 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2985
2986 open_external_viewer(mergetool_argv, opt_cdup);
2987 }
2988
2989 static void
2990 open_editor(const char *file)
2991 {
2992 const char *editor_argv[SIZEOF_ARG + 1] = { "vi", file, NULL };
2993 char editor_cmd[SIZEOF_STR];
2994 const char *editor;
2995 int argc = 0;
2996
2997 editor = getenv("GIT_EDITOR");
2998 if (!editor && *opt_editor)
2999 editor = opt_editor;
3000 if (!editor)
3001 editor = getenv("VISUAL");
3002 if (!editor)
3003 editor = getenv("EDITOR");
3004 if (!editor)
3005 editor = "vi";
3006
3007 string_ncopy(editor_cmd, editor, strlen(editor));
3008 if (!argv_from_string_no_quotes(editor_argv, &argc, editor_cmd)) {
3009 report("Failed to read editor command");
3010 return;
3011 }
3012
3013 editor_argv[argc] = file;
3014 open_external_viewer(editor_argv, opt_cdup);
3015 }
3016
3017 static void
3018 open_run_request(enum request request)
3019 {
3020 struct run_request *req = get_run_request(request);
3021 const char **argv = NULL;
3022
3023 if (!req) {
3024 report("Unknown run request");
3025 return;
3026 }
3027
3028 if (format_argv(&argv, req->argv, FALSE))
3029 open_external_viewer(argv, NULL);
3030 if (argv)
3031 argv_free(argv);
3032 free(argv);
3033 }
3034
3035 /*
3036 * User request switch noodle
3037 */
3038
3039 static int
3040 view_driver(struct view *view, enum request request)
3041 {
3042 int i;
3043
3044 if (request == REQ_NONE)
3045 return TRUE;
3046
3047 if (request > REQ_NONE) {
3048 open_run_request(request);
3049 view_request(view, REQ_REFRESH);
3050 return TRUE;
3051 }
3052
3053 request = view_request(view, request);
3054 if (request == REQ_NONE)
3055 return TRUE;
3056
3057 switch (request) {
3058 case REQ_MOVE_UP:
3059 case REQ_MOVE_DOWN:
3060 case REQ_MOVE_PAGE_UP:
3061 case REQ_MOVE_PAGE_DOWN:
3062 case REQ_MOVE_FIRST_LINE:
3063 case REQ_MOVE_LAST_LINE:
3064 move_view(view, request);
3065 break;
3066
3067 case REQ_SCROLL_FIRST_COL:
3068 case REQ_SCROLL_LEFT:
3069 case REQ_SCROLL_RIGHT:
3070 case REQ_SCROLL_LINE_DOWN:
3071 case REQ_SCROLL_LINE_UP:
3072 case REQ_SCROLL_PAGE_DOWN:
3073 case REQ_SCROLL_PAGE_UP:
3074 scroll_view(view, request);
3075 break;
3076
3077 case REQ_VIEW_BLAME:
3078 if (!opt_file[0]) {
3079 report("No file chosen, press %s to open tree view",
3080 get_key(view->keymap, REQ_VIEW_TREE));
3081 break;
3082 }
3083 open_view(view, request, OPEN_DEFAULT);
3084 break;
3085
3086 case REQ_VIEW_BLOB:
3087 if (!ref_blob[0]) {
3088 report("No file chosen, press %s to open tree view",
3089 get_key(view->keymap, REQ_VIEW_TREE));
3090 break;
3091 }
3092 open_view(view, request, OPEN_DEFAULT);
3093 break;
3094
3095 case REQ_VIEW_PAGER:
3096 if (view == NULL) {
3097 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
3098 die("Failed to open stdin");
3099 open_view(view, request, OPEN_PREPARED);
3100 break;
3101 }
3102
3103 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3104 report("No pager content, press %s to run command from prompt",
3105 get_key(view->keymap, REQ_PROMPT));
3106 break;
3107 }
3108 open_view(view, request, OPEN_DEFAULT);
3109 break;
3110
3111 case REQ_VIEW_STAGE:
3112 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3113 report("No stage content, press %s to open the status view and choose file",
3114 get_key(view->keymap, REQ_VIEW_STATUS));
3115 break;
3116 }
3117 open_view(view, request, OPEN_DEFAULT);
3118 break;
3119
3120 case REQ_VIEW_STATUS:
3121 if (opt_is_inside_work_tree == FALSE) {
3122 report("The status view requires a working tree");
3123 break;
3124 }
3125 open_view(view, request, OPEN_DEFAULT);
3126 break;
3127
3128 case REQ_VIEW_MAIN:
3129 case REQ_VIEW_DIFF:
3130 case REQ_VIEW_LOG:
3131 case REQ_VIEW_TREE:
3132 case REQ_VIEW_HELP:
3133 case REQ_VIEW_BRANCH:
3134 open_view(view, request, OPEN_DEFAULT);
3135 break;
3136
3137 case REQ_NEXT:
3138 case REQ_PREVIOUS:
3139 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3140
3141 if (view->parent) {
3142 int line;
3143
3144 view = view->parent;
3145 line = view->lineno;
3146 move_view(view, request);
3147 if (view_is_displayed(view))
3148 update_view_title(view);
3149 if (line != view->lineno)
3150 view_request(view, REQ_ENTER);
3151 } else {
3152 move_view(view, request);
3153 }
3154 break;
3155
3156 case REQ_VIEW_NEXT:
3157 {
3158 int nviews = displayed_views();
3159 int next_view = (current_view + 1) % nviews;
3160
3161 if (next_view == current_view) {
3162 report("Only one view is displayed");
3163 break;
3164 }
3165
3166 current_view = next_view;
3167 /* Blur out the title of the previous view. */
3168 update_view_title(view);
3169 report("");
3170 break;
3171 }
3172 case REQ_REFRESH:
3173 report("Refreshing is not yet supported for the %s view", view->name);
3174 break;
3175
3176 case REQ_MAXIMIZE:
3177 if (displayed_views() == 2)
3178 maximize_view(view, TRUE);
3179 break;
3180
3181 case REQ_OPTIONS:
3182 case REQ_TOGGLE_LINENO:
3183 case REQ_TOGGLE_DATE:
3184 case REQ_TOGGLE_AUTHOR:
3185 case REQ_TOGGLE_FILENAME:
3186 case REQ_TOGGLE_GRAPHIC:
3187 case REQ_TOGGLE_REV_GRAPH:
3188 case REQ_TOGGLE_REFS:
3189 toggle_option(request);
3190 break;
3191
3192 case REQ_TOGGLE_SORT_FIELD:
3193 case REQ_TOGGLE_SORT_ORDER:
3194 report("Sorting is not yet supported for the %s view", view->name);
3195 break;
3196
3197 case REQ_DIFF_CONTEXT_UP:
3198 case REQ_DIFF_CONTEXT_DOWN:
3199 report("Changing the diff context is not yet supported for the %s view", view->name);
3200 break;
3201
3202 case REQ_SEARCH:
3203 case REQ_SEARCH_BACK:
3204 search_view(view, request);
3205 break;
3206
3207 case REQ_FIND_NEXT:
3208 case REQ_FIND_PREV:
3209 find_next(view, request);
3210 break;
3211
3212 case REQ_STOP_LOADING:
3213 foreach_view(view, i) {
3214 if (view->pipe)
3215 report("Stopped loading the %s view", view->name),
3216 end_update(view, TRUE);
3217 }
3218 break;
3219
3220 case REQ_SHOW_VERSION:
3221 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3222 return TRUE;
3223
3224 case REQ_SCREEN_REDRAW:
3225 redraw_display(TRUE);
3226 break;
3227
3228 case REQ_EDIT:
3229 report("Nothing to edit");
3230 break;
3231
3232 case REQ_ENTER:
3233 report("Nothing to enter");
3234 break;
3235
3236 case REQ_VIEW_CLOSE:
3237 /* XXX: Mark closed views by letting view->prev point to the
3238 * view itself. Parents to closed view should never be
3239 * followed. */
3240 if (view->prev && view->prev != view) {
3241 maximize_view(view->prev, TRUE);
3242 view->prev = view;
3243 break;
3244 }
3245 /* Fall-through */
3246 case REQ_QUIT:
3247 return FALSE;
3248
3249 default:
3250 report("Unknown key, press %s for help",
3251 get_key(view->keymap, REQ_VIEW_HELP));
3252 return TRUE;
3253 }
3254
3255 return TRUE;
3256 }
3257
3258
3259 /*
3260 * View backend utilities
3261 */
3262
3263 enum sort_field {
3264 ORDERBY_NAME,
3265 ORDERBY_DATE,
3266 ORDERBY_AUTHOR,
3267 };
3268
3269 struct sort_state {
3270 const enum sort_field *fields;
3271 size_t size, current;
3272 bool reverse;
3273 };
3274
3275 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3276 #define get_sort_field(state) ((state).fields[(state).current])
3277 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3278
3279 static void
3280 sort_view(struct view *view, enum request request, struct sort_state *state,
3281 int (*compare)(const void *, const void *))
3282 {
3283 switch (request) {
3284 case REQ_TOGGLE_SORT_FIELD:
3285 state->current = (state->current + 1) % state->size;
3286 break;
3287
3288 case REQ_TOGGLE_SORT_ORDER:
3289 state->reverse = !state->reverse;
3290 break;
3291 default:
3292 die("Not a sort request");
3293 }
3294
3295 qsort(view->line, view->lines, sizeof(*view->line), compare);
3296 redraw_view(view);
3297 }
3298
3299 static bool
3300 update_diff_context(enum request request)
3301 {
3302 int diff_context = opt_diff_context;
3303
3304 switch (request) {
3305 case REQ_DIFF_CONTEXT_UP:
3306 opt_diff_context += 1;
3307 update_diff_context_arg(opt_diff_context);
3308 break;
3309
3310 case REQ_DIFF_CONTEXT_DOWN:
3311 if (opt_diff_context == 0) {
3312 report("Diff context cannot be less than zero");
3313 break;
3314 }
3315 opt_diff_context -= 1;
3316 update_diff_context_arg(opt_diff_context);
3317 break;
3318
3319 default:
3320 die("Not a diff context request");
3321 }
3322
3323 return diff_context != opt_diff_context;
3324 }
3325
3326 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3327
3328 /* Small author cache to reduce memory consumption. It uses binary
3329 * search to lookup or find place to position new entries. No entries
3330 * are ever freed. */
3331 static const char *
3332 get_author(const char *name)
3333 {
3334 static const char **authors;
3335 static size_t authors_size;
3336 int from = 0, to = authors_size - 1;
3337
3338 while (from <= to) {
3339 size_t pos = (to + from) / 2;
3340 int cmp = strcmp(name, authors[pos]);
3341
3342 if (!cmp)
3343 return authors[pos];
3344
3345 if (cmp < 0)
3346 to = pos - 1;
3347 else
3348 from = pos + 1;
3349 }
3350
3351 if (!realloc_authors(&authors, authors_size, 1))
3352 return NULL;
3353 name = strdup(name);
3354 if (!name)
3355 return NULL;
3356
3357 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3358 authors[from] = name;
3359 authors_size++;
3360
3361 return name;
3362 }
3363
3364 static void
3365 parse_timesec(struct time *time, const char *sec)
3366 {
3367 time->sec = (time_t) atol(sec);
3368 }
3369
3370 static void
3371 parse_timezone(struct time *time, const char *zone)
3372 {
3373 long tz;
3374
3375 tz = ('0' - zone[1]) * 60 * 60 * 10;
3376 tz += ('0' - zone[2]) * 60 * 60;
3377 tz += ('0' - zone[3]) * 60 * 10;
3378 tz += ('0' - zone[4]) * 60;
3379
3380 if (zone[0] == '-')
3381 tz = -tz;
3382
3383 time->tz = tz;
3384 time->sec -= tz;
3385 }
3386
3387 /* Parse author lines where the name may be empty:
3388 * author <email@address.tld> 1138474660 +0100
3389 */
3390 static void
3391 parse_author_line(char *ident, const char **author, struct time *time)
3392 {
3393 char *nameend = strchr(ident, '<');
3394 char *emailend = strchr(ident, '>');
3395
3396 if (nameend && emailend)
3397 *nameend = *emailend = 0;
3398 ident = chomp_string(ident);
3399 if (!*ident) {
3400 if (nameend)
3401 ident = chomp_string(nameend + 1);
3402 if (!*ident)
3403 ident = "Unknown";
3404 }
3405
3406 *author = get_author(ident);
3407
3408 /* Parse epoch and timezone */
3409 if (emailend && emailend[1] == ' ') {
3410 char *secs = emailend + 2;
3411 char *zone = strchr(secs, ' ');
3412
3413 parse_timesec(time, secs);
3414
3415 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3416 parse_timezone(time, zone + 1);
3417 }
3418 }
3419
3420 static struct line *
3421 find_prev_line_by_type(struct view *view, struct line *line, enum line_type type)
3422 {
3423 for (; view->line < line; line--)
3424 if (line->type == type)
3425 return line;
3426
3427 return NULL;
3428 }
3429
3430 /*
3431 * Blame
3432 */
3433
3434 struct blame_commit {
3435 char id[SIZEOF_REV]; /* SHA1 ID. */
3436 char title[128]; /* First line of the commit message. */
3437 const char *author; /* Author of the commit. */
3438 struct time time; /* Date from the author ident. */
3439 char filename[128]; /* Name of file. */
3440 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
3441 char parent_filename[128]; /* Parent/previous name of file. */
3442 };
3443
3444 struct blame_header {
3445 char id[SIZEOF_REV]; /* SHA1 ID. */
3446 size_t orig_lineno;
3447 size_t lineno;
3448 size_t group;
3449 };
3450
3451 static bool
3452 parse_number(const char **posref, size_t *number, size_t min, size_t max)
3453 {
3454 const char *pos = *posref;
3455
3456 *posref = NULL;
3457 pos = strchr(pos + 1, ' ');
3458 if (!pos || !isdigit(pos[1]))
3459 return FALSE;
3460 *number = atoi(pos + 1);
3461 if (*number < min || *number > max)
3462 return FALSE;
3463
3464 *posref = pos;
3465 return TRUE;
3466 }
3467
3468 static bool
3469 parse_blame_header(struct blame_header *header, const char *text, size_t max_lineno)
3470 {
3471 const char *pos = text + SIZEOF_REV - 2;
3472
3473 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
3474 return FALSE;
3475
3476 string_ncopy(header->id, text, SIZEOF_REV);
3477
3478 if (!parse_number(&pos, &header->orig_lineno, 1, 9999999) ||
3479 !parse_number(&pos, &header->lineno, 1, max_lineno) ||
3480 !parse_number(&pos, &header->group, 1, max_lineno - header->lineno + 1))
3481 return FALSE;
3482
3483 return TRUE;
3484 }
3485
3486 static bool
3487 match_blame_header(const char *name, char **line)
3488 {
3489 size_t namelen = strlen(name);
3490 bool matched = !strncmp(name, *line, namelen);
3491
3492 if (matched)
3493 *line += namelen;
3494
3495 return matched;
3496 }
3497
3498 static bool
3499 parse_blame_info(struct blame_commit *commit, char *line)
3500 {
3501 if (match_blame_header("author ", &line)) {
3502 commit->author = get_author(line);
3503
3504 } else if (match_blame_header("author-time ", &line)) {
3505 parse_timesec(&commit->time, line);
3506
3507 } else if (match_blame_header("author-tz ", &line)) {
3508 parse_timezone(&commit->time, line);
3509
3510 } else if (match_blame_header("summary ", &line)) {
3511 string_ncopy(commit->title, line, strlen(line));
3512
3513 } else if (match_blame_header("previous ", &line)) {
3514 if (strlen(line) <= SIZEOF_REV)
3515 return FALSE;
3516 string_copy_rev(commit->parent_id, line);
3517 line += SIZEOF_REV;
3518 string_ncopy(commit->parent_filename, line, strlen(line));
3519
3520 } else if (match_blame_header("filename ", &line)) {
3521 string_ncopy(commit->filename, line, strlen(line));
3522 return TRUE;
3523 }
3524
3525 return FALSE;
3526 }
3527
3528 /*
3529 * Pager backend
3530 */
3531
3532 static bool
3533 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3534 {
3535 if (opt_line_number && draw_lineno(view, lineno))
3536 return TRUE;
3537
3538 draw_text(view, line->type, line->data);
3539 return TRUE;
3540 }
3541
3542 static bool
3543 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3544 {
3545 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3546 char ref[SIZEOF_STR];
3547
3548 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3549 return TRUE;
3550
3551 /* This is the only fatal call, since it can "corrupt" the buffer. */
3552 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3553 return FALSE;
3554
3555 return TRUE;
3556 }
3557
3558 static void
3559 add_pager_refs(struct view *view, struct line *line)
3560 {
3561 char buf[SIZEOF_STR];
3562 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3563 struct ref_list *list;
3564 size_t bufpos = 0, i;
3565 const char *sep = "Refs: ";
3566 bool is_tag = FALSE;
3567
3568 assert(line->type == LINE_COMMIT);
3569
3570 list = get_ref_list(commit_id);
3571 if (!list) {
3572 if (view->type == VIEW_DIFF)
3573 goto try_add_describe_ref;
3574 return;
3575 }
3576
3577 for (i = 0; i < list->size; i++) {
3578 struct ref *ref = list->refs[i];
3579 const char *fmt = ref->tag ? "%s[%s]" :
3580 ref->remote ? "%s<%s>" : "%s%s";
3581
3582 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3583 return;
3584 sep = ", ";
3585 if (ref->tag)
3586 is_tag = TRUE;
3587 }
3588
3589 if (!is_tag && view->type == VIEW_DIFF) {
3590 try_add_describe_ref:
3591 /* Add <tag>-g<commit_id> "fake" reference. */
3592 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3593 return;
3594 }
3595
3596 if (bufpos == 0)
3597 return;
3598
3599 add_line_text(view, buf, LINE_PP_REFS);
3600 }
3601
3602 static bool
3603 pager_read(struct view *view, char *data)
3604 {
3605 struct line *line;
3606
3607 if (!data)
3608 return TRUE;
3609
3610 line = add_line_text(view, data, get_line_type(data));
3611 if (!line)
3612 return FALSE;
3613
3614 if (line->type == LINE_COMMIT &&
3615 (view->type == VIEW_DIFF ||
3616 view->type == VIEW_LOG))
3617 add_pager_refs(view, line);
3618
3619 return TRUE;
3620 }
3621
3622 static enum request
3623 pager_request(struct view *view, enum request request, struct line *line)
3624 {
3625 int split = 0;
3626
3627 if (request != REQ_ENTER)
3628 return request;
3629
3630 if (line->type == LINE_COMMIT &&
3631 (view->type == VIEW_LOG ||
3632 view->type == VIEW_PAGER)) {
3633 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3634 split = 1;
3635 }
3636
3637 /* Always scroll the view even if it was split. That way
3638 * you can use Enter to scroll through the log view and
3639 * split open each commit diff. */
3640 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3641
3642 /* FIXME: A minor workaround. Scrolling the view will call report("")
3643 * but if we are scrolling a non-current view this won't properly
3644 * update the view title. */
3645 if (split)
3646 update_view_title(view);
3647
3648 return REQ_NONE;
3649 }
3650
3651 static bool
3652 pager_grep(struct view *view, struct line *line)
3653 {
3654 const char *text[] = { line->data, NULL };
3655
3656 return grep_text(view, text);
3657 }
3658
3659 static void
3660 pager_select(struct view *view, struct line *line)
3661 {
3662 if (line->type == LINE_COMMIT) {
3663 char *text = (char *)line->data + STRING_SIZE("commit ");
3664
3665 if (view->type != VIEW_PAGER)
3666 string_copy_rev(view->ref, text);
3667 string_copy_rev(ref_commit, text);
3668 }
3669 }
3670
3671 static bool
3672 pager_open(struct view *view, enum open_flags flags)
3673 {
3674 return begin_update(view, NULL, NULL, flags);
3675 }
3676
3677 static struct view_ops pager_ops = {
3678 "line",
3679 0,
3680 pager_open,
3681 pager_read,
3682 pager_draw,
3683 pager_request,
3684 pager_grep,
3685 pager_select,
3686 };
3687
3688 static bool
3689 log_open(struct view *view, enum open_flags flags)
3690 {
3691 static const char *log_argv[] = {
3692 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3693 };
3694
3695 return begin_update(view, NULL, log_argv, flags);
3696 }
3697
3698 static enum request
3699 log_request(struct view *view, enum request request, struct line *line)
3700 {
3701 switch (request) {
3702 case REQ_REFRESH:
3703 load_refs();
3704 refresh_view(view);
3705 return REQ_NONE;
3706 default:
3707 return pager_request(view, request, line);
3708 }
3709 }
3710
3711 static struct view_ops log_ops = {
3712 "line",
3713 0,
3714 log_open,
3715 pager_read,
3716 pager_draw,
3717 log_request,
3718 pager_grep,
3719 pager_select,
3720 };
3721
3722 struct diff_state {
3723 bool reading_diff_stat;
3724 };
3725
3726 static bool
3727 diff_open(struct view *view, enum open_flags flags)
3728 {
3729 static const char *diff_argv[] = {
3730 "git", "show", "--pretty=fuller", "--no-color", "--root",
3731 "--patch-with-stat", "--find-copies-harder", "-C",
3732 opt_notes_arg, opt_diff_context_arg, "%(diffargs)",
3733 "%(commit)", "--", "%(fileargs)", NULL
3734 };
3735
3736 return begin_update(view, NULL, diff_argv, flags);
3737 }
3738
3739 static bool
3740 diff_common_read(struct view *view, char *data, struct diff_state *state)
3741 {
3742 if (state->reading_diff_stat) {
3743 size_t len = strlen(data);
3744 char *pipe = strchr(data, '|');
3745 bool has_histogram = data[len - 1] == '-' || data[len - 1] == '+';
3746 bool has_bin_diff = pipe && strstr(pipe, "Bin") && strstr(pipe, "->");
3747
3748 if (pipe && (has_histogram || has_bin_diff)) {
3749 return add_line_text(view, data, LINE_DIFF_STAT) != NULL;
3750 } else {
3751 state->reading_diff_stat = FALSE;
3752 }
3753
3754 } else if (!strcmp(data, "---")) {
3755 state->reading_diff_stat = TRUE;
3756 }
3757
3758 return pager_read(view, data);
3759 }
3760
3761 static enum request
3762 diff_common_enter(struct view *view, enum request request, struct line *line)
3763 {
3764 if (line->type == LINE_DIFF_STAT) {
3765 int file_number = 0;
3766
3767 while (line >= view->line && line->type == LINE_DIFF_STAT) {
3768 file_number++;
3769 line--;
3770 }
3771
3772 while (line < view->line + view->lines) {
3773 if (line->type == LINE_DIFF_HEADER) {
3774 if (file_number == 1) {
3775 break;
3776 }
3777 file_number--;
3778 }
3779 line++;
3780 }
3781
3782
3783 select_view_line(view, line - view->line);
3784 report("");
3785 return REQ_NONE;
3786
3787 } else {
3788 return pager_request(view, request, line);
3789 }
3790 }
3791
3792 static bool
3793 diff_common_draw_part(struct view *view, enum line_type *type, char **text, char c, enum line_type next_type)
3794 {
3795 char *sep = strchr(*text, c);
3796
3797 if (sep != NULL) {
3798 *sep = 0;
3799 draw_text(view, *type, *text);
3800 *sep = c;
3801 *text = sep;
3802 *type = next_type;
3803 }
3804
3805 return sep != NULL;
3806 }
3807
3808 static bool
3809 diff_common_draw(struct view *view, struct line *line, unsigned int lineno)
3810 {
3811 char *text = line->data;
3812 enum line_type type = line->type;
3813
3814 if (opt_line_number && draw_lineno(view, lineno))
3815 return TRUE;
3816
3817 if (type == LINE_DIFF_STAT) {
3818 diff_common_draw_part(view, &type, &text, '|', LINE_DEFAULT);
3819 if (diff_common_draw_part(view, &type, &text, 'B', LINE_DEFAULT)) {
3820 /* Handle binary diffstat: Bin <deleted> -> <added> bytes */
3821 diff_common_draw_part(view, &type, &text, ' ', LINE_DIFF_DEL);
3822 diff_common_draw_part(view, &type, &text, '-', LINE_DEFAULT);
3823 diff_common_draw_part(view, &type, &text, ' ', LINE_DIFF_ADD);
3824 diff_common_draw_part(view, &type, &text, 'b', LINE_DEFAULT);
3825
3826 } else {
3827 diff_common_draw_part(view, &type, &text, '+', LINE_DIFF_ADD);
3828 diff_common_draw_part(view, &type, &text, '-', LINE_DIFF_DEL);
3829 }
3830 }
3831
3832 draw_text(view, type, text);
3833 return TRUE;
3834 }
3835
3836 static bool
3837 diff_read(struct view *view, char *data)
3838 {
3839 struct diff_state *state = view->private;
3840
3841 if (!data) {
3842 /* Fall back to retry if no diff will be shown. */
3843 if (view->lines == 0 && opt_file_argv) {
3844 int pos = argv_size(view->argv)
3845 - argv_size(opt_file_argv) - 1;
3846
3847 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3848 for (; view->argv[pos]; pos++) {
3849 free((void *) view->argv[pos]);
3850 view->argv[pos] = NULL;
3851 }
3852
3853 if (view->pipe)
3854 io_done(view->pipe);
3855 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3856 return FALSE;
3857 }
3858 }
3859 return TRUE;
3860 }
3861
3862 return diff_common_read(view, data, state);
3863 }
3864
3865 static bool
3866 diff_blame_line(const char *ref, const char *file, unsigned long lineno,
3867 struct blame_header *header, struct blame_commit *commit)
3868 {
3869 char line_arg[SIZEOF_STR];
3870 const char *blame_argv[] = {
3871 "git", "blame", "-p", line_arg, ref, "--", file, NULL
3872 };
3873 struct io io;
3874 bool ok = FALSE;
3875 char *buf;
3876
3877 if (!string_format(line_arg, "-L%d,+1", lineno))
3878 return FALSE;
3879
3880 if (!io_run(&io, IO_RD, opt_cdup, blame_argv))
3881 return FALSE;
3882
3883 while ((buf = io_get(&io, '\n', TRUE))) {
3884 if (header) {
3885 if (!parse_blame_header(header, buf, 9999999))
3886 break;
3887 header = NULL;
3888
3889 } else if (parse_blame_info(commit, buf)) {
3890 ok = TRUE;
3891 break;
3892 }
3893 }
3894
3895 if (io_error(&io))
3896 ok = FALSE;
3897
3898 io_done(&io);
3899 return ok;
3900 }
3901
3902 static bool
3903 parse_chunk_lineno(int *lineno, const char *chunk, int marker)
3904 {
3905 return prefixcmp(chunk, "@@ -") ||
3906 !(chunk = strchr(chunk, marker)) ||
3907 parse_int(lineno, chunk + 1, 0, 9999999) != OPT_OK;
3908 }
3909
3910 static enum request
3911 diff_trace_origin(struct view *view, struct line *line)
3912 {
3913 struct line *diff = find_prev_line_by_type(view, line, LINE_DIFF_HEADER);
3914 struct line *chunk = find_prev_line_by_type(view, line, LINE_DIFF_CHUNK);
3915 const char *chunk_data;
3916 int chunk_marker = line->type == LINE_DIFF_DEL ? '-' : '+';
3917 int lineno = 0;
3918 const char *file = NULL;
3919 char ref[SIZEOF_REF];
3920 struct blame_header header;
3921 struct blame_commit commit;
3922
3923 if (!diff || !chunk || chunk == line) {
3924 report("The line to trace must be inside a diff chunk");
3925 return REQ_NONE;
3926 }
3927
3928 for (; diff < line && !file; diff++) {
3929 const char *data = diff->data;
3930
3931 if (!prefixcmp(data, "--- a/")) {
3932 file = data + STRING_SIZE("--- a/");
3933 break;
3934 }
3935 }
3936
3937 if (diff == line || !file) {
3938 report("Failed to read the file name");
3939 return REQ_NONE;
3940 }
3941
3942 chunk_data = chunk->data;
3943
3944 if (parse_chunk_lineno(&lineno, chunk_data, chunk_marker)) {
3945 report("Failed to read the line number");
3946 return REQ_NONE;
3947 }
3948
3949 if (lineno == 0) {
3950 report("This is the origin of the line");
3951 return REQ_NONE;
3952 }
3953
3954 for (chunk += 1; chunk < line; chunk++) {
3955 if (chunk->type == LINE_DIFF_ADD) {
3956 lineno += chunk_marker == '+';
3957 } else if (chunk->type == LINE_DIFF_DEL) {
3958 lineno += chunk_marker == '-';
3959 } else {
3960 lineno++;
3961 }
3962 }
3963
3964 if (chunk_marker == '+')
3965 string_copy(ref, view->vid);
3966 else
3967 string_format(ref, "%s^", view->vid);
3968
3969 if (!diff_blame_line(ref, file, lineno, &header, &commit)) {
3970 report("Failed to read blame data");
3971 return REQ_NONE;
3972 }
3973
3974 string_ncopy(opt_file, commit.filename, strlen(commit.filename));
3975 string_copy(opt_ref, header.id);
3976 opt_goto_line = header.orig_lineno - 1;
3977
3978 return REQ_VIEW_BLAME;
3979 }
3980
3981 static enum request
3982 diff_request(struct view *view, enum request request, struct line *line)
3983 {
3984 switch (request) {
3985 case REQ_VIEW_BLAME:
3986 return diff_trace_origin(view, line);
3987
3988 case REQ_DIFF_CONTEXT_UP:
3989 case REQ_DIFF_CONTEXT_DOWN:
3990 if (!update_diff_context(request))
3991 return REQ_NONE;
3992 reload_view(view);
3993 return REQ_NONE;
3994
3995 case REQ_ENTER:
3996 return diff_common_enter(view, request, line);
3997
3998 default:
3999 return pager_request(view, request, line);
4000 }
4001 }
4002
4003 static void
4004 diff_select(struct view *view, struct line *line)
4005 {
4006 if (line->type == LINE_DIFF_STAT) {
4007 const char *key = get_key(KEYMAP_DIFF, REQ_ENTER);
4008
4009 string_format(view->ref, "Press '%s' to jump to file diff", key);
4010 } else {
4011 string_ncopy(view->ref, view->id, strlen(view->id));
4012 return pager_select(view, line);
4013 }
4014 }
4015
4016 static struct view_ops diff_ops = {
4017 "line",
4018 sizeof(struct diff_state),
4019 diff_open,
4020 diff_read,
4021 diff_common_draw,
4022 diff_request,
4023 pager_grep,
4024 diff_select,
4025 };
4026
4027 /*
4028 * Help backend
4029 */
4030
4031 static bool help_keymap_hidden[ARRAY_SIZE(keymap_map)];
4032
4033 static bool
4034 help_open_keymap_title(struct view *view, enum keymap keymap)
4035 {
4036 struct line *line;
4037
4038 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
4039 help_keymap_hidden[keymap] ? '+' : '-',
4040 enum_name(keymap_map[keymap]));
4041 if (line)
4042 line->other = keymap;
4043
4044 return help_keymap_hidden[keymap];
4045 }
4046
4047 static void
4048 help_open_keymap(struct view *view, enum keymap keymap)
4049 {
4050 const char *group = NULL;
4051 char buf[SIZEOF_STR];
4052 size_t bufpos;
4053 bool add_title = TRUE;
4054 int i;
4055
4056 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
4057 const char *key = NULL;
4058
4059 if (req_info[i].request == REQ_NONE)
4060 continue;
4061
4062 if (!req_info[i].request) {
4063 group = req_info[i].help;
4064 continue;
4065 }
4066
4067 key = get_keys(keymap, req_info[i].request, TRUE);
4068 if (!key || !*key)
4069 continue;
4070
4071 if (add_title && help_open_keymap_title(view, keymap))
4072 return;
4073 add_title = FALSE;
4074
4075 if (group) {
4076 add_line_text(view, group, LINE_HELP_GROUP);
4077 group = NULL;
4078 }
4079
4080 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
4081 enum_name(req_info[i]), req_info[i].help);
4082 }
4083
4084 group = "External commands:";
4085
4086 for (i = 0; i < run_requests; i++) {
4087 struct run_request *req = get_run_request(REQ_NONE + i + 1);
4088 const char *key;
4089 int argc;
4090
4091 if (!req || req->keymap != keymap)
4092 continue;
4093
4094 key = get_key_name(req->key);
4095 if (!*key)
4096 key = "(no key defined)";
4097
4098 if (add_title && help_open_keymap_title(view, keymap))
4099 return;
4100 if (group) {
4101 add_line_text(view, group, LINE_HELP_GROUP);
4102 group = NULL;
4103 }
4104
4105 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
4106 if (!string_format_from(buf, &bufpos, "%s%s",
4107 argc ? " " : "", req->argv[argc]))
4108 return;
4109
4110 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
4111 }
4112 }
4113
4114 static bool
4115 help_open(struct view *view, enum open_flags flags)
4116 {
4117 enum keymap keymap;
4118
4119 reset_view(view);
4120 view->p_restore = TRUE;
4121 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
4122 add_line_text(view, "", LINE_DEFAULT);
4123
4124 for (keymap = 0; keymap < ARRAY_SIZE(keymap_map); keymap++)
4125 help_open_keymap(view, keymap);
4126
4127 return TRUE;
4128 }
4129
4130 static enum request
4131 help_request(struct view *view, enum request request, struct line *line)
4132 {
4133 switch (request) {
4134 case REQ_ENTER:
4135 if (line->type == LINE_HELP_KEYMAP) {
4136 help_keymap_hidden[line->other] =
4137 !help_keymap_hidden[line->other];
4138 refresh_view(view);
4139 }
4140
4141 return REQ_NONE;
4142 default:
4143 return pager_request(view, request, line);
4144 }
4145 }
4146
4147 static struct view_ops help_ops = {
4148 "line",
4149 0,
4150 help_open,
4151 NULL,
4152 pager_draw,
4153 help_request,
4154 pager_grep,
4155 pager_select,
4156 };
4157
4158
4159 /*
4160 * Tree backend
4161 */
4162
4163 struct tree_stack_entry {
4164 struct tree_stack_entry *prev; /* Entry below this in the stack */
4165 unsigned long lineno; /* Line number to restore */
4166 char *name; /* Position of name in opt_path */
4167 };
4168
4169 /* The top of the path stack. */
4170 static struct tree_stack_entry *tree_stack = NULL;
4171 unsigned long tree_lineno = 0;
4172
4173 static void
4174 pop_tree_stack_entry(void)
4175 {
4176 struct tree_stack_entry *entry = tree_stack;
4177
4178 tree_lineno = entry->lineno;
4179 entry->name[0] = 0;
4180 tree_stack = entry->prev;
4181 free(entry);
4182 }
4183
4184 static void
4185 push_tree_stack_entry(const char *name, unsigned long lineno)
4186 {
4187 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
4188 size_t pathlen = strlen(opt_path);
4189
4190 if (!entry)
4191 return;
4192
4193 entry->prev = tree_stack;
4194 entry->name = opt_path + pathlen;
4195 tree_stack = entry;
4196
4197 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
4198 pop_tree_stack_entry();
4199 return;
4200 }
4201
4202 /* Move the current line to the first tree entry. */
4203 tree_lineno = 1;
4204 entry->lineno = lineno;
4205 }
4206
4207 /* Parse output from git-ls-tree(1):
4208 *
4209 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
4210 */
4211
4212 #define SIZEOF_TREE_ATTR \
4213 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
4214
4215 #define SIZEOF_TREE_MODE \
4216 STRING_SIZE("100644 ")
4217
4218 #define TREE_ID_OFFSET \
4219 STRING_SIZE("100644 blob ")
4220
4221 struct tree_entry {
4222 char id[SIZEOF_REV];
4223 mode_t mode;
4224 struct time time; /* Date from the author ident. */
4225 const char *author; /* Author of the commit. */
4226 char name[1];
4227 };
4228
4229 struct tree_state {
4230 const char *author_name;
4231 struct time author_time;
4232 bool read_date;
4233 };
4234
4235 static const char *
4236 tree_path(const struct line *line)
4237 {
4238 return ((struct tree_entry *) line->data)->name;
4239 }
4240
4241 static int
4242 tree_compare_entry(const struct line *line1, const struct line *line2)
4243 {
4244 if (line1->type != line2->type)
4245 return line1->type == LINE_TREE_DIR ? -1 : 1;
4246 return strcmp(tree_path(line1), tree_path(line2));
4247 }
4248
4249 static const enum sort_field tree_sort_fields[] = {
4250 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4251 };
4252 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
4253
4254 static int
4255 tree_compare(const void *l1, const void *l2)
4256 {
4257 const struct line *line1 = (const struct line *) l1;
4258 const struct line *line2 = (const struct line *) l2;
4259 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
4260 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
4261
4262 if (line1->type == LINE_TREE_HEAD)
4263 return -1;
4264 if (line2->type == LINE_TREE_HEAD)
4265 return 1;
4266
4267 switch (get_sort_field(tree_sort_state)) {
4268 case ORDERBY_DATE:
4269 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
4270
4271 case ORDERBY_AUTHOR:
4272 return sort_order(tree_sort_state, strcmp_null(entry1->author, entry2->author));
4273
4274 case ORDERBY_NAME:
4275 default:
4276 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
4277 }
4278 }
4279
4280
4281 static struct line *
4282 tree_entry(struct view *view, enum line_type type, const char *path,
4283 const char *mode, const char *id)
4284 {
4285 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
4286 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
4287
4288 if (!entry || !line) {
4289 free(entry);
4290 return NULL;
4291 }
4292
4293 strncpy(entry->name, path, strlen(path));
4294 if (mode)
4295 entry->mode = strtoul(mode, NULL, 8);
4296 if (id)
4297 string_copy_rev(entry->id, id);
4298
4299 return line;
4300 }
4301
4302 static bool
4303 tree_read_date(struct view *view, char *text, struct tree_state *state)
4304 {
4305 if (!text && state->read_date) {
4306 state->read_date = FALSE;
4307 return TRUE;
4308
4309 } else if (!text) {
4310 /* Find next entry to process */
4311 const char *log_file[] = {
4312 "git", "log", "--no-color", "--pretty=raw",
4313 "--cc", "--raw", view->id, "--", "%(directory)", NULL
4314 };
4315
4316 if (!view->lines) {
4317 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
4318 report("Tree is empty");
4319 return TRUE;
4320 }
4321
4322 if (!begin_update(view, opt_cdup, log_file, OPEN_EXTRA)) {
4323 report("Failed to load tree data");
4324 return TRUE;
4325 }
4326
4327 state->read_date = TRUE;
4328 return FALSE;
4329
4330 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
4331 parse_author_line(text + STRING_SIZE("author "),
4332 &state->author_name, &state->author_time);
4333
4334 } else if (*text == ':') {
4335 char *pos;
4336 size_t annotated = 1;
4337 size_t i;
4338
4339 pos = strchr(text, '\t');
4340 if (!pos)
4341 return TRUE;
4342 text = pos + 1;
4343 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
4344 text += strlen(opt_path);
4345 pos = strchr(text, '/');
4346 if (pos)
4347 *pos = 0;
4348
4349 for (i = 1; i < view->lines; i++) {
4350 struct line *line = &view->line[i];
4351 struct tree_entry *entry = line->data;
4352
4353 annotated += !!entry->author;
4354 if (entry->author || strcmp(entry->name, text))
4355 continue;
4356
4357 entry->author = state->author_name;
4358 entry->time = state->author_time;
4359 line->dirty = 1;
4360 break;
4361 }
4362
4363 if (annotated == view->lines)
4364 io_kill(view->pipe);
4365 }
4366 return TRUE;
4367 }
4368
4369 static bool
4370 tree_read(struct view *view, char *text)
4371 {
4372 struct tree_state *state = view->private;
4373 struct tree_entry *data;
4374 struct line *entry, *line;
4375 enum line_type type;
4376 size_t textlen = text ? strlen(text) : 0;
4377 char *path = text + SIZEOF_TREE_ATTR;
4378
4379 if (state->read_date || !text)
4380 return tree_read_date(view, text, state);
4381
4382 if (textlen <= SIZEOF_TREE_ATTR)
4383 return FALSE;
4384 if (view->lines == 0 &&
4385 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
4386 return FALSE;
4387
4388 /* Strip the path part ... */
4389 if (*opt_path) {
4390 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
4391 size_t striplen = strlen(opt_path);
4392
4393 if (pathlen > striplen)
4394 memmove(path, path + striplen,
4395 pathlen - striplen + 1);
4396
4397 /* Insert "link" to parent directory. */
4398 if (view->lines == 1 &&
4399 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
4400 return FALSE;
4401 }
4402
4403 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
4404 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
4405 if (!entry)
4406 return FALSE;
4407 data = entry->data;
4408
4409 /* Skip "Directory ..." and ".." line. */
4410 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
4411 if (tree_compare_entry(line, entry) <= 0)
4412 continue;
4413
4414 memmove(line + 1, line, (entry - line) * sizeof(*entry));
4415
4416 line->data = data;
4417 line->type = type;
4418 for (; line <= entry; line++)
4419 line->dirty = line->cleareol = 1;
4420 return TRUE;
4421 }
4422
4423 if (tree_lineno > view->lineno) {
4424 view->lineno = tree_lineno;
4425 tree_lineno = 0;
4426 }
4427
4428 return TRUE;
4429 }
4430
4431 static bool
4432 tree_draw(struct view *view, struct line *line, unsigned int lineno)
4433 {
4434 struct tree_entry *entry = line->data;
4435
4436 if (line->type == LINE_TREE_HEAD) {
4437 if (draw_text(view, line->type, "Directory path /"))
4438 return TRUE;
4439 } else {
4440 if (draw_mode(view, entry->mode))
4441 return TRUE;
4442
4443 if (draw_author(view, entry->author))
4444 return TRUE;
4445
4446 if (draw_date(view, &entry->time))
4447 return TRUE;
4448 }
4449
4450 draw_text(view, line->type, entry->name);
4451 return TRUE;
4452 }
4453
4454 static void
4455 open_blob_editor(const char *id)
4456 {
4457 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
4458 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
4459 int fd = mkstemp(file);
4460
4461 if (fd == -1)
4462 report("Failed to create temporary file");
4463 else if (!io_run_append(blob_argv, fd))
4464 report("Failed to save blob data to file");
4465 else
4466 open_editor(file);
4467 if (fd != -1)
4468 unlink(file);
4469 }
4470
4471 static enum request
4472 tree_request(struct view *view, enum request request, struct line *line)
4473 {
4474 enum open_flags flags;
4475 struct tree_entry *entry = line->data;
4476
4477 switch (request) {
4478 case REQ_VIEW_BLAME:
4479 if (line->type != LINE_TREE_FILE) {
4480 report("Blame only supported for files");
4481 return REQ_NONE;
4482 }
4483
4484 string_copy(opt_ref, view->vid);
4485 return request;
4486
4487 case REQ_EDIT:
4488 if (line->type != LINE_TREE_FILE) {
4489 report("Edit only supported for files");
4490 } else if (!is_head_commit(view->vid)) {
4491 open_blob_editor(entry->id);
4492 } else {
4493 open_editor(opt_file);
4494 }
4495 return REQ_NONE;
4496
4497 case REQ_TOGGLE_SORT_FIELD:
4498 case REQ_TOGGLE_SORT_ORDER:
4499 sort_view(view, request, &tree_sort_state, tree_compare);
4500 return REQ_NONE;
4501
4502 case REQ_PARENT:
4503 if (!*opt_path) {
4504 /* quit view if at top of tree */
4505 return REQ_VIEW_CLOSE;
4506 }
4507 /* fake 'cd ..' */
4508 line = &view->line[1];
4509 break;
4510
4511 case REQ_ENTER:
4512 break;
4513
4514 default:
4515 return request;
4516 }
4517
4518 /* Cleanup the stack if the tree view is at a different tree. */
4519 while (!*opt_path && tree_stack)
4520 pop_tree_stack_entry();
4521
4522 switch (line->type) {
4523 case LINE_TREE_DIR:
4524 /* Depending on whether it is a subdirectory or parent link
4525 * mangle the path buffer. */
4526 if (line == &view->line[1] && *opt_path) {
4527 pop_tree_stack_entry();
4528
4529 } else {
4530 const char *basename = tree_path(line);
4531
4532 push_tree_stack_entry(basename, view->lineno);
4533 }
4534
4535 /* Trees and subtrees share the same ID, so they are not not
4536 * unique like blobs. */
4537 flags = OPEN_RELOAD;
4538 request = REQ_VIEW_TREE;
4539 break;
4540
4541 case LINE_TREE_FILE:
4542 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4543 request = REQ_VIEW_BLOB;
4544 break;
4545
4546 default:
4547 return REQ_NONE;
4548 }
4549
4550 open_view(view, request, flags);
4551 if (request == REQ_VIEW_TREE)
4552 view->lineno = tree_lineno;
4553
4554 return REQ_NONE;
4555 }
4556
4557 static bool
4558 tree_grep(struct view *view, struct line *line)
4559 {
4560 struct tree_entry *entry = line->data;
4561 const char *text[] = {
4562 entry->name,
4563 mkauthor(entry->author, opt_author_cols, opt_author),
4564 mkdate(&entry->time, opt_date),
4565 NULL
4566 };
4567
4568 return grep_text(view, text);
4569 }
4570
4571 static void
4572 tree_select(struct view *view, struct line *line)
4573 {
4574 struct tree_entry *entry = line->data;
4575
4576 if (line->type == LINE_TREE_FILE) {
4577 string_copy_rev(ref_blob, entry->id);
4578 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4579
4580 } else if (line->type != LINE_TREE_DIR) {
4581 return;
4582 }
4583
4584 string_copy_rev(view->ref, entry->id);
4585 }
4586
4587 static bool
4588 tree_open(struct view *view, enum open_flags flags)
4589 {
4590 static const char *tree_argv[] = {
4591 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4592 };
4593
4594 if (view->lines == 0 && opt_prefix[0]) {
4595 char *pos = opt_prefix;
4596
4597 while (pos && *pos) {
4598 char *end = strchr(pos, '/');
4599
4600 if (end)
4601 *end = 0;
4602 push_tree_stack_entry(pos, 0);
4603 pos = end;
4604 if (end) {
4605 *end = '/';
4606 pos++;
4607 }
4608 }
4609
4610 } else if (strcmp(view->vid, view->id)) {
4611 opt_path[0] = 0;
4612 }
4613
4614 return begin_update(view, opt_cdup, tree_argv, flags);
4615 }
4616
4617 static struct view_ops tree_ops = {
4618 "file",
4619 sizeof(struct tree_state),
4620 tree_open,
4621 tree_read,
4622 tree_draw,
4623 tree_request,
4624 tree_grep,
4625 tree_select,
4626 };
4627
4628 static bool
4629 blob_open(struct view *view, enum open_flags flags)
4630 {
4631 static const char *blob_argv[] = {
4632 "git", "cat-file", "blob", "%(blob)", NULL
4633 };
4634
4635 return begin_update(view, NULL, blob_argv, flags);
4636 }
4637
4638 static bool
4639 blob_read(struct view *view, char *line)
4640 {
4641 if (!line)
4642 return TRUE;
4643 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4644 }
4645
4646 static enum request
4647 blob_request(struct view *view, enum request request, struct line *line)
4648 {
4649 switch (request) {
4650 case REQ_EDIT:
4651 open_blob_editor(view->vid);
4652 return REQ_NONE;
4653 default:
4654 return pager_request(view, request, line);
4655 }
4656 }
4657
4658 static struct view_ops blob_ops = {
4659 "line",
4660 0,
4661 blob_open,
4662 blob_read,
4663 pager_draw,
4664 blob_request,
4665 pager_grep,
4666 pager_select,
4667 };
4668
4669 /*
4670 * Blame backend
4671 *
4672 * Loading the blame view is a two phase job:
4673 *
4674 * 1. File content is read either using opt_file from the
4675 * filesystem or using git-cat-file.
4676 * 2. Then blame information is incrementally added by
4677 * reading output from git-blame.
4678 */
4679
4680 struct blame {
4681 struct blame_commit *commit;
4682 unsigned long lineno;
4683 char text[1];
4684 };
4685
4686 struct blame_state {
4687 struct blame_commit *commit;
4688 int blamed;
4689 bool done_reading;
4690 bool auto_filename_display;
4691 };
4692
4693 static bool
4694 blame_detect_filename_display(struct view *view)
4695 {
4696 bool show_filenames = FALSE;
4697 const char *filename = NULL;
4698 int i;
4699
4700 if (opt_blame_argv) {
4701 for (i = 0; opt_blame_argv[i]; i++) {
4702 if (prefixcmp(opt_blame_argv[i], "-C"))
4703 continue;
4704
4705 show_filenames = TRUE;
4706 }
4707 }
4708
4709 for (i = 0; i < view->lines; i++) {
4710 struct blame *blame = view->line[i].data;
4711
4712 if (blame->commit && blame->commit->id[0]) {
4713 if (!filename)
4714 filename = blame->commit->filename;
4715 else if (strcmp(filename, blame->commit->filename))
4716 show_filenames = TRUE;
4717 }
4718 }
4719
4720 return show_filenames;
4721 }
4722
4723 static bool
4724 blame_open(struct view *view, enum open_flags flags)
4725 {
4726 const char *file_argv[] = { opt_cdup, opt_file , NULL };
4727 char path[SIZEOF_STR];
4728 size_t i;
4729
4730 if (!view->prev && *opt_prefix) {
4731 string_copy(path, opt_file);
4732 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4733 return FALSE;
4734 }
4735
4736 if (*opt_ref || !begin_update(view, opt_cdup, file_argv, flags)) {
4737 const char *blame_cat_file_argv[] = {
4738 "git", "cat-file", "blob", "%(ref):%(file)", NULL
4739 };
4740
4741 if (!begin_update(view, opt_cdup, blame_cat_file_argv, flags))
4742 return FALSE;
4743 }
4744
4745 /* First pass: remove multiple references to the same commit. */
4746 for (i = 0; i < view->lines; i++) {
4747 struct blame *blame = view->line[i].data;
4748
4749 if (blame->commit && blame->commit->id[0])
4750 blame->commit->id[0] = 0;
4751 else
4752 blame->commit = NULL;
4753 }
4754
4755 /* Second pass: free existing references. */
4756 for (i = 0; i < view->lines; i++) {
4757 struct blame *blame = view->line[i].data;
4758
4759 if (blame->commit)
4760 free(blame->commit);
4761 }
4762
4763 string_format(view->vid, "%s", opt_file);
4764 string_format(view->ref, "%s ...", opt_file);
4765
4766 return TRUE;
4767 }
4768
4769 static struct blame_commit *
4770 get_blame_commit(struct view *view, const char *id)
4771 {
4772 size_t i;
4773
4774 for (i = 0; i < view->lines; i++) {
4775 struct blame *blame = view->line[i].data;
4776
4777 if (!blame->commit)
4778 continue;
4779
4780 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4781 return blame->commit;
4782 }
4783
4784 {
4785 struct blame_commit *commit = calloc(1, sizeof(*commit));
4786
4787 if (commit)
4788 string_ncopy(commit->id, id, SIZEOF_REV);
4789 return commit;
4790 }
4791 }
4792
4793 static struct blame_commit *
4794 read_blame_commit(struct view *view, const char *text, struct blame_state *state)
4795 {
4796 struct blame_header header;
4797 struct blame_commit *commit;
4798 struct blame *blame;
4799
4800 if (!parse_blame_header(&header, text, view->lines))
4801 return NULL;
4802
4803 commit = get_blame_commit(view, text);
4804 if (!commit)
4805 return NULL;
4806
4807 state->blamed += header.group;
4808 while (header.group--) {
4809 struct line *line = &view->line[header.lineno + header.group - 1];
4810
4811 blame = line->data;
4812 blame->commit = commit;
4813 blame->lineno = header.orig_lineno + header.group - 1;
4814 line->dirty = 1;
4815 }
4816
4817 return commit;
4818 }
4819
4820 static bool
4821 blame_read_file(struct view *view, const char *line, struct blame_state *state)
4822 {
4823 if (!line) {
4824 const char *blame_argv[] = {
4825 "git", "blame", "%(blameargs)", "--incremental",
4826 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4827 };
4828
4829 if (view->lines == 0 && !view->prev)
4830 die("No blame exist for %s", view->vid);
4831
4832 if (view->lines == 0 || !begin_update(view, opt_cdup, blame_argv, OPEN_EXTRA)) {
4833 report("Failed to load blame data");
4834 return TRUE;
4835 }
4836
4837 if (opt_goto_line > 0) {
4838 select_view_line(view, opt_goto_line);
4839 opt_goto_line = 0;
4840 }
4841
4842 state->done_reading = TRUE;
4843 return FALSE;
4844
4845 } else {
4846 size_t linelen = strlen(line);
4847 struct blame *blame = malloc(sizeof(*blame) + linelen);
4848
4849 if (!blame)
4850 return FALSE;
4851
4852 blame->commit = NULL;
4853 strncpy(blame->text, line, linelen);
4854 blame->text[linelen] = 0;
4855 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4856 }
4857 }
4858
4859 static bool
4860 blame_read(struct view *view, char *line)
4861 {
4862 struct blame_state *state = view->private;
4863
4864 if (!state->done_reading)
4865 return blame_read_file(view, line, state);
4866
4867 if (!line) {
4868 state->auto_filename_display = blame_detect_filename_display(view);
4869 string_format(view->ref, "%s", view->vid);
4870 if (view_is_displayed(view)) {
4871 update_view_title(view);
4872 redraw_view_from(view, 0);
4873 }
4874 return TRUE;
4875 }
4876
4877 if (!state->commit) {
4878 state->commit = read_blame_commit(view, line, state);
4879 string_format(view->ref, "%s %2d%%", view->vid,
4880 view->lines ? state->blamed * 100 / view->lines : 0);
4881
4882 } else if (parse_blame_info(state->commit, line)) {
4883 state->commit = NULL;
4884 }
4885
4886 return TRUE;
4887 }
4888
4889 static bool
4890 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4891 {
4892 struct blame_state *state = view->private;
4893 struct blame *blame = line->data;
4894 struct time *time = NULL;
4895 const char *id = NULL, *author = NULL, *filename = NULL;
4896 enum line_type id_type = LINE_BLAME_ID;
4897 static const enum line_type blame_colors[] = {
4898 LINE_PALETTE_0,
4899 LINE_PALETTE_1,
4900 LINE_PALETTE_2,
4901 LINE_PALETTE_3,
4902 LINE_PALETTE_4,
4903 LINE_PALETTE_5,
4904 LINE_PALETTE_6,
4905 };
4906
4907 #define BLAME_COLOR(i) \
4908 (blame_colors[(i) % ARRAY_SIZE(blame_colors)])
4909
4910 if (blame->commit && *blame->commit->filename) {
4911 id = blame->commit->id;
4912 author = blame->commit->author;
4913 filename = blame->commit->filename;
4914 time = &blame->commit->time;
4915 id_type = BLAME_COLOR((long) blame->commit);
4916 }
4917
4918 if (draw_date(view, time))
4919 return TRUE;
4920
4921 if (draw_author(view, author))
4922 return TRUE;
4923
4924 if (draw_filename(view, filename, state->auto_filename_display))
4925 return TRUE;
4926
4927 if (draw_field(view, id_type, id, ID_COLS, FALSE))
4928 return TRUE;
4929
4930 if (draw_lineno(view, lineno))
4931 return TRUE;
4932
4933 draw_text(view, LINE_DEFAULT, blame->text);
4934 return TRUE;
4935 }
4936
4937 static bool
4938 check_blame_commit(struct blame *blame, bool check_null_id)
4939 {
4940 if (!blame->commit)
4941 report("Commit data not loaded yet");
4942 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4943 report("No commit exist for the selected line");
4944 else
4945 return TRUE;
4946 return FALSE;
4947 }
4948
4949 static void
4950 setup_blame_parent_line(struct view *view, struct blame *blame)
4951 {
4952 char from[SIZEOF_REF + SIZEOF_STR];
4953 char to[SIZEOF_REF + SIZEOF_STR];
4954 const char *diff_tree_argv[] = {
4955 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4956 "-U0", from, to, "--", NULL
4957 };
4958 struct io io;
4959 int parent_lineno = -1;
4960 int blamed_lineno = -1;
4961 char *line;
4962
4963 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4964 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4965 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4966 return;
4967
4968 while ((line = io_get(&io, '\n', TRUE))) {
4969 if (*line == '@') {
4970 char *pos = strchr(line, '+');
4971
4972 parent_lineno = atoi(line + 4);
4973 if (pos)
4974 blamed_lineno = atoi(pos + 1);
4975
4976 } else if (*line == '+' && parent_lineno != -1) {
4977 if (blame->lineno == blamed_lineno - 1 &&
4978 !strcmp(blame->text, line + 1)) {
4979 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4980 break;
4981 }
4982 blamed_lineno++;
4983 }
4984 }
4985
4986 io_done(&io);
4987 }
4988
4989 static enum request
4990 blame_request(struct view *view, enum request request, struct line *line)
4991 {
4992 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4993 struct blame *blame = line->data;
4994
4995 switch (request) {
4996 case REQ_VIEW_BLAME:
4997 if (check_blame_commit(blame, TRUE)) {
4998 string_copy(opt_ref, blame->commit->id);
4999 string_copy(opt_file, blame->commit->filename);
5000 if (blame->lineno)
5001 view->lineno = blame->lineno;
5002 reload_view(view);
5003 }
5004 break;
5005
5006 case REQ_PARENT:
5007 if (!check_blame_commit(blame, TRUE))
5008 break;
5009 if (!*blame->commit->parent_id) {
5010 report("The selected commit has no parents");
5011 } else {
5012 string_copy_rev(opt_ref, blame->commit->parent_id);
5013 string_copy(opt_file, blame->commit->parent_filename);
5014 setup_blame_parent_line(view, blame);
5015 opt_goto_line = blame->lineno;
5016 reload_view(view);
5017 }
5018 break;
5019
5020 case REQ_ENTER:
5021 if (!check_blame_commit(blame, FALSE))
5022 break;
5023
5024 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
5025 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
5026 break;
5027
5028 if (!strcmp(blame->commit->id, NULL_ID)) {
5029 struct view *diff = VIEW(REQ_VIEW_DIFF);
5030 const char *diff_index_argv[] = {
5031 "git", "diff-index", "--root", "--patch-with-stat",
5032 "-C", "-M", opt_diff_context_arg,
5033 "HEAD", "--", view->vid, NULL
5034 };
5035
5036 if (!*blame->commit->parent_id) {
5037 diff_index_argv[1] = "diff";
5038 diff_index_argv[2] = "--no-color";
5039 diff_index_argv[7] = "--";
5040 diff_index_argv[8] = "/dev/null";
5041 }
5042
5043 open_argv(view, diff, diff_index_argv, NULL, flags);
5044 if (diff->pipe)
5045 string_copy_rev(diff->ref, NULL_ID);
5046 } else {
5047 open_view(view, REQ_VIEW_DIFF, flags);
5048 }
5049 break;
5050
5051 default:
5052 return request;
5053 }
5054
5055 return REQ_NONE;
5056 }
5057
5058 static bool
5059 blame_grep(struct view *view, struct line *line)
5060 {
5061 struct blame *blame = line->data;
5062 struct blame_commit *commit = blame->commit;
5063 const char *text[] = {
5064 blame->text,
5065 commit ? commit->title : "",
5066 commit ? commit->id : "",
5067 commit && opt_author ? commit->author : "",
5068 commit ? mkdate(&commit->time, opt_date) : "",
5069 NULL
5070 };
5071
5072 return grep_text(view, text);
5073 }
5074
5075 static void
5076 blame_select(struct view *view, struct line *line)
5077 {
5078 struct blame *blame = line->data;
5079 struct blame_commit *commit = blame->commit;
5080
5081 if (!commit)
5082 return;
5083
5084 if (!strcmp(commit->id, NULL_ID))
5085 string_ncopy(ref_commit, "HEAD", 4);
5086 else
5087 string_copy_rev(ref_commit, commit->id);
5088 }
5089
5090 static struct view_ops blame_ops = {
5091 "line",
5092 sizeof(struct blame_state),
5093 blame_open,
5094 blame_read,
5095 blame_draw,
5096 blame_request,
5097 blame_grep,
5098 blame_select,
5099 };
5100
5101 /*
5102 * Branch backend
5103 */
5104
5105 struct branch {
5106 const char *author; /* Author of the last commit. */
5107 struct time time; /* Date of the last activity. */
5108 const struct ref *ref; /* Name and commit ID information. */
5109 };
5110
5111 static const struct ref branch_all;
5112
5113 static const enum sort_field branch_sort_fields[] = {
5114 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
5115 };
5116 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
5117
5118 struct branch_state {
5119 char id[SIZEOF_REV];
5120 };
5121
5122 static int
5123 branch_compare(const void *l1, const void *l2)
5124 {
5125 const struct branch *branch1 = ((const struct line *) l1)->data;
5126 const struct branch *branch2 = ((const struct line *) l2)->data;
5127
5128 if (branch1->ref == &branch_all)
5129 return -1;
5130 else if (branch2->ref == &branch_all)
5131 return 1;
5132
5133 switch (get_sort_field(branch_sort_state)) {
5134 case ORDERBY_DATE:
5135 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
5136
5137 case ORDERBY_AUTHOR:
5138 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
5139
5140 case ORDERBY_NAME:
5141 default:
5142 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
5143 }
5144 }
5145
5146 static bool
5147 branch_draw(struct view *view, struct line *line, unsigned int lineno)
5148 {
5149 struct branch *branch = line->data;
5150 enum line_type type = branch->ref == &branch_all ? LINE_DEFAULT : get_line_type_from_ref(branch->ref);
5151
5152 if (draw_date(view, &branch->time))
5153 return TRUE;
5154
5155 if (draw_author(view, branch->author))
5156 return TRUE;
5157
5158 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
5159 return TRUE;
5160 }
5161
5162 static enum request
5163 branch_request(struct view *view, enum request request, struct line *line)
5164 {
5165 struct branch *branch = line->data;
5166
5167 switch (request) {
5168 case REQ_REFRESH:
5169 load_refs();
5170 refresh_view(view);
5171 return REQ_NONE;
5172
5173 case REQ_TOGGLE_SORT_FIELD:
5174 case REQ_TOGGLE_SORT_ORDER:
5175 sort_view(view, request, &branch_sort_state, branch_compare);
5176 return REQ_NONE;
5177
5178 case REQ_ENTER:
5179 {
5180 const struct ref *ref = branch->ref;
5181 const char *all_branches_argv[] = {
5182 "git", "log", "--no-color", "--pretty=raw", "--parents",
5183 "--topo-order",
5184 ref == &branch_all ? "--all" : ref->name, NULL
5185 };
5186 struct view *main_view = VIEW(REQ_VIEW_MAIN);
5187
5188 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
5189 return REQ_NONE;
5190 }
5191 case REQ_JUMP_COMMIT:
5192 {
5193 int lineno;
5194
5195 for (lineno = 0; lineno < view->lines; lineno++) {
5196 struct branch *branch = view->line[lineno].data;
5197
5198 if (!strncasecmp(branch->ref->id, opt_search, strlen(opt_search))) {
5199 select_view_line(view, lineno);
5200 report("");
5201 return REQ_NONE;
5202 }
5203 }
5204 }
5205 default:
5206 return request;
5207 }
5208 }
5209
5210 static bool
5211 branch_read(struct view *view, char *line)
5212 {
5213 struct branch_state *state = view->private;
5214 struct branch *reference;
5215 size_t i;
5216
5217 if (!line)
5218 return TRUE;
5219
5220 switch (get_line_type(line)) {
5221 case LINE_COMMIT:
5222 string_copy_rev(state->id, line + STRING_SIZE("commit "));
5223 return TRUE;
5224
5225 case LINE_AUTHOR:
5226 for (i = 0, reference = NULL; i < view->lines; i++) {
5227 struct branch *branch = view->line[i].data;
5228
5229 if (strcmp(branch->ref->id, state->id))
5230 continue;
5231
5232 view->line[i].dirty = TRUE;
5233 if (reference) {
5234 branch->author = reference->author;
5235 branch->time = reference->time;
5236 continue;
5237 }
5238
5239 parse_author_line(line + STRING_SIZE("author "),
5240 &branch->author, &branch->time);
5241 reference = branch;
5242 }
5243 return TRUE;
5244
5245 default:
5246 return TRUE;
5247 }
5248
5249 }
5250
5251 static bool
5252 branch_open_visitor(void *data, const struct ref *ref)
5253 {
5254 struct view *view = data;
5255 struct branch *branch;
5256
5257 if (ref->tag || ref->ltag)
5258 return TRUE;
5259
5260 branch = calloc(1, sizeof(*branch));
5261 if (!branch)
5262 return FALSE;
5263
5264 branch->ref = ref;
5265 return !!add_line_data(view, branch, LINE_DEFAULT);
5266 }
5267
5268 static bool
5269 branch_open(struct view *view, enum open_flags flags)
5270 {
5271 const char *branch_log[] = {
5272 "git", "log", "--no-color", "--pretty=raw",
5273 "--simplify-by-decoration", "--all", NULL
5274 };
5275
5276 if (!begin_update(view, NULL, branch_log, flags)) {
5277 report("Failed to load branch data");
5278 return TRUE;
5279 }
5280
5281 branch_open_visitor(view, &branch_all);
5282 foreach_ref(branch_open_visitor, view);
5283 view->p_restore = TRUE;
5284
5285 return TRUE;
5286 }
5287
5288 static bool
5289 branch_grep(struct view *view, struct line *line)
5290 {
5291 struct branch *branch = line->data;
5292 const char *text[] = {
5293 branch->ref->name,
5294 mkauthor(branch->author, opt_author_cols, opt_author),
5295 NULL
5296 };
5297
5298 return grep_text(view, text);
5299 }
5300
5301 static void
5302 branch_select(struct view *view, struct line *line)
5303 {
5304 struct branch *branch = line->data;
5305
5306 string_copy_rev(view->ref, branch->ref->id);
5307 string_copy_rev(ref_commit, branch->ref->id);
5308 string_copy_rev(ref_head, branch->ref->id);
5309 string_copy_rev(ref_branch, branch->ref->name);
5310 }
5311
5312 static struct view_ops branch_ops = {
5313 "branch",
5314 sizeof(struct branch_state),
5315 branch_open,
5316 branch_read,
5317 branch_draw,
5318 branch_request,
5319 branch_grep,
5320 branch_select,
5321 };
5322
5323 /*
5324 * Status backend
5325 */
5326
5327 struct status {
5328 char status;
5329 struct {
5330 mode_t mode;
5331 char rev[SIZEOF_REV];
5332 char name[SIZEOF_STR];
5333 } old;
5334 struct {
5335 mode_t mode;
5336 char rev[SIZEOF_REV];
5337 char name[SIZEOF_STR];
5338 } new;
5339 };
5340
5341 static char status_onbranch[SIZEOF_STR];
5342 static struct status stage_status;
5343 static enum line_type stage_line_type;
5344
5345 DEFINE_ALLOCATOR(realloc_ints, int, 32)
5346
5347 /* This should work even for the "On branch" line. */
5348 static inline bool
5349 status_has_none(struct view *view, struct line *line)
5350 {
5351 return line < view->line + view->lines && !line[1].data;
5352 }
5353
5354 /* Get fields from the diff line:
5355 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
5356 */
5357 static inline bool
5358 status_get_diff(struct status *file, const char *buf, size_t bufsize)
5359 {
5360 const char *old_mode = buf + 1;
5361 const char *new_mode = buf + 8;
5362 const char *old_rev = buf + 15;
5363 const char *new_rev = buf + 56;
5364 const char *status = buf + 97;
5365
5366 if (bufsize < 98 ||
5367 old_mode[-1] != ':' ||
5368 new_mode[-1] != ' ' ||
5369 old_rev[-1] != ' ' ||
5370 new_rev[-1] != ' ' ||
5371 status[-1] != ' ')
5372 return FALSE;
5373
5374 file->status = *status;
5375
5376 string_copy_rev(file->old.rev, old_rev);
5377 string_copy_rev(file->new.rev, new_rev);
5378
5379 file->old.mode = strtoul(old_mode, NULL, 8);
5380 file->new.mode = strtoul(new_mode, NULL, 8);
5381
5382 file->old.name[0] = file->new.name[0] = 0;
5383
5384 return TRUE;
5385 }
5386
5387 static bool
5388 status_run(struct view *view, const char *argv[], char status, enum line_type type)
5389 {
5390 struct status *unmerged = NULL;
5391 char *buf;
5392 struct io io;
5393
5394 if (!io_run(&io, IO_RD, opt_cdup, argv))
5395 return FALSE;
5396
5397 add_line_data(view, NULL, type);
5398
5399 while ((buf = io_get(&io, 0, TRUE))) {
5400 struct status *file = unmerged;
5401
5402 if (!file) {
5403 file = calloc(1, sizeof(*file));
5404 if (!file || !add_line_data(view, file, type))
5405 goto error_out;
5406 }
5407
5408 /* Parse diff info part. */
5409 if (status) {
5410 file->status = status;
5411 if (status == 'A')
5412 string_copy(file->old.rev, NULL_ID);
5413
5414 } else if (!file->status || file == unmerged) {
5415 if (!status_get_diff(file, buf, strlen(buf)))
5416 goto error_out;
5417
5418 buf = io_get(&io, 0, TRUE);
5419 if (!buf)
5420 break;
5421
5422 /* Collapse all modified entries that follow an
5423 * associated unmerged entry. */
5424 if (unmerged == file) {
5425 unmerged->status = 'U';
5426 unmerged = NULL;
5427 } else if (file->status == 'U') {
5428 unmerged = file;
5429 }
5430 }
5431
5432 /* Grab the old name for rename/copy. */
5433 if (!*file->old.name &&
5434 (file->status == 'R' || file->status == 'C')) {
5435 string_ncopy(file->old.name, buf, strlen(buf));
5436
5437 buf = io_get(&io, 0, TRUE);
5438 if (!buf)
5439 break;
5440 }
5441
5442 /* git-ls-files just delivers a NUL separated list of
5443 * file names similar to the second half of the
5444 * git-diff-* output. */
5445 string_ncopy(file->new.name, buf, strlen(buf));
5446 if (!*file->old.name)
5447 string_copy(file->old.name, file->new.name);
5448 file = NULL;
5449 }
5450
5451 if (io_error(&io)) {
5452 error_out:
5453 io_done(&io);
5454 return FALSE;
5455 }
5456
5457 if (!view->line[view->lines - 1].data)
5458 add_line_data(view, NULL, LINE_STAT_NONE);
5459
5460 io_done(&io);
5461 return TRUE;
5462 }
5463
5464 /* Don't show unmerged entries in the staged section. */
5465 static const char *status_diff_index_argv[] = {
5466 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
5467 "--cached", "-M", "HEAD", NULL
5468 };
5469
5470 static const char *status_diff_files_argv[] = {
5471 "git", "diff-files", "-z", NULL
5472 };
5473
5474 static const char *status_list_other_argv[] = {
5475 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
5476 };
5477
5478 static const char *status_list_no_head_argv[] = {
5479 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
5480 };
5481
5482 static const char *update_index_argv[] = {
5483 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
5484 };
5485
5486 /* Restore the previous line number to stay in the context or select a
5487 * line with something that can be updated. */
5488 static void
5489 status_restore(struct view *view)
5490 {
5491 if (view->p_lineno >= view->lines)
5492 view->p_lineno = view->lines - 1;
5493 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
5494 view->p_lineno++;
5495 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
5496 view->p_lineno--;
5497
5498 /* If the above fails, always skip the "On branch" line. */
5499 if (view->p_lineno < view->lines)
5500 view->lineno = view->p_lineno;
5501 else
5502 view->lineno = 1;
5503
5504 if (view->lineno < view->offset)
5505 view->offset = view->lineno;
5506 else if (view->offset + view->height <= view->lineno)
5507 view->offset = view->lineno - view->height + 1;
5508
5509 view->p_restore = FALSE;
5510 }
5511
5512 static void
5513 status_update_onbranch(void)
5514 {
5515 static const char *paths[][2] = {
5516 { "rebase-apply/rebasing", "Rebasing" },
5517 { "rebase-apply/applying", "Applying mailbox" },
5518 { "rebase-apply/", "Rebasing mailbox" },
5519 { "rebase-merge/interactive", "Interactive rebase" },
5520 { "rebase-merge/", "Rebase merge" },
5521 { "MERGE_HEAD", "Merging" },
5522 { "BISECT_LOG", "Bisecting" },
5523 { "HEAD", "On branch" },
5524 };
5525 char buf[SIZEOF_STR];
5526 struct stat stat;
5527 int i;
5528
5529 if (is_initial_commit()) {
5530 string_copy(status_onbranch, "Initial commit");
5531 return;
5532 }
5533
5534 for (i = 0; i < ARRAY_SIZE(paths); i++) {
5535 char *head = opt_head;
5536
5537 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
5538 lstat(buf, &stat) < 0)
5539 continue;
5540
5541 if (!*opt_head) {
5542 struct io io;
5543
5544 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
5545 io_read_buf(&io, buf, sizeof(buf))) {
5546 head = buf;
5547 if (!prefixcmp(head, "refs/heads/"))
5548 head += STRING_SIZE("refs/heads/");
5549 }
5550 }
5551
5552 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
5553 string_copy(status_onbranch, opt_head);
5554 return;
5555 }
5556
5557 string_copy(status_onbranch, "Not currently on any branch");
5558 }
5559
5560 /* First parse staged info using git-diff-index(1), then parse unstaged
5561 * info using git-diff-files(1), and finally untracked files using
5562 * git-ls-files(1). */
5563 static bool
5564 status_open(struct view *view, enum open_flags flags)
5565 {
5566 reset_view(view);
5567
5568 add_line_data(view, NULL, LINE_STAT_HEAD);
5569 status_update_onbranch();
5570
5571 io_run_bg(update_index_argv);
5572
5573 if (is_initial_commit()) {
5574 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
5575 return FALSE;
5576 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
5577 return FALSE;
5578 }
5579
5580 if (!opt_untracked_dirs_content)
5581 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
5582
5583 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
5584 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
5585 return FALSE;
5586
5587 /* Restore the exact position or use the specialized restore
5588 * mode? */
5589 if (!view->p_restore)
5590 status_restore(view);
5591 return TRUE;
5592 }
5593
5594 static bool
5595 status_draw(struct view *view, struct line *line, unsigned int lineno)
5596 {
5597 struct status *status = line->data;
5598 enum line_type type;
5599 const char *text;
5600
5601 if (!status) {
5602 switch (line->type) {
5603 case LINE_STAT_STAGED:
5604 type = LINE_STAT_SECTION;
5605 text = "Changes to be committed:";
5606 break;
5607
5608 case LINE_STAT_UNSTAGED:
5609 type = LINE_STAT_SECTION;
5610 text = "Changed but not updated:";
5611 break;
5612
5613 case LINE_STAT_UNTRACKED:
5614 type = LINE_STAT_SECTION;
5615 text = "Untracked files:";
5616 break;
5617
5618 case LINE_STAT_NONE:
5619 type = LINE_DEFAULT;
5620 text = " (no files)";
5621 break;
5622
5623 case LINE_STAT_HEAD:
5624 type = LINE_STAT_HEAD;
5625 text = status_onbranch;
5626 break;
5627
5628 default:
5629 return FALSE;
5630 }
5631 } else {
5632 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5633
5634 buf[0] = status->status;
5635 if (draw_text(view, line->type, buf))
5636 return TRUE;
5637 type = LINE_DEFAULT;
5638 text = status->new.name;
5639 }
5640
5641 draw_text(view, type, text);
5642 return TRUE;
5643 }
5644
5645 static enum request
5646 status_enter(struct view *view, struct line *line)
5647 {
5648 struct status *status = line->data;
5649 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5650
5651 if (line->type == LINE_STAT_NONE ||
5652 (!status && line[1].type == LINE_STAT_NONE)) {
5653 report("No file to diff");
5654 return REQ_NONE;
5655 }
5656
5657 switch (line->type) {
5658 case LINE_STAT_STAGED:
5659 case LINE_STAT_UNSTAGED:
5660 break;
5661
5662 case LINE_STAT_UNTRACKED:
5663 if (!status) {
5664 report("No file to show");
5665 return REQ_NONE;
5666 }
5667
5668 if (!suffixcmp(status->new.name, -1, "/")) {
5669 report("Cannot display a directory");
5670 return REQ_NONE;
5671 }
5672 break;
5673
5674 case LINE_STAT_HEAD:
5675 return REQ_NONE;
5676
5677 default:
5678 die("line type %d not handled in switch", line->type);
5679 }
5680
5681 if (status) {
5682 stage_status = *status;
5683 } else {
5684 memset(&stage_status, 0, sizeof(stage_status));
5685 }
5686
5687 stage_line_type = line->type;
5688
5689 open_view(view, REQ_VIEW_STAGE, flags);
5690 return REQ_NONE;
5691 }
5692
5693 static bool
5694 status_exists(struct view *view, struct status *status, enum line_type type)
5695 {
5696 unsigned long lineno;
5697
5698 for (lineno = 0; lineno < view->lines; lineno++) {
5699 struct line *line = &view->line[lineno];
5700 struct status *pos = line->data;
5701
5702 if (line->type != type)
5703 continue;
5704 if (!pos && (!status || !status->status) && line[1].data) {
5705 select_view_line(view, lineno);
5706 return TRUE;
5707 }
5708 if (pos && !strcmp(status->new.name, pos->new.name)) {
5709 select_view_line(view, lineno);
5710 return TRUE;
5711 }
5712 }
5713
5714 return FALSE;
5715 }
5716
5717
5718 static bool
5719 status_update_prepare(struct io *io, enum line_type type)
5720 {
5721 const char *staged_argv[] = {
5722 "git", "update-index", "-z", "--index-info", NULL
5723 };
5724 const char *others_argv[] = {
5725 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5726 };
5727
5728 switch (type) {
5729 case LINE_STAT_STAGED:
5730 return io_run(io, IO_WR, opt_cdup, staged_argv);
5731
5732 case LINE_STAT_UNSTAGED:
5733 case LINE_STAT_UNTRACKED:
5734 return io_run(io, IO_WR, opt_cdup, others_argv);
5735
5736 default:
5737 die("line type %d not handled in switch", type);
5738 return FALSE;
5739 }
5740 }
5741
5742 static bool
5743 status_update_write(struct io *io, struct status *status, enum line_type type)
5744 {
5745 switch (type) {
5746 case LINE_STAT_STAGED:
5747 return io_printf(io, "%06o %s\t%s%c", status->old.mode,
5748 status->old.rev, status->old.name, 0);
5749
5750 case LINE_STAT_UNSTAGED:
5751 case LINE_STAT_UNTRACKED:
5752 return io_printf(io, "%s%c", status->new.name, 0);
5753
5754 default:
5755 die("line type %d not handled in switch", type);
5756 return FALSE;
5757 }
5758 }
5759
5760 static bool
5761 status_update_file(struct status *status, enum line_type type)
5762 {
5763 struct io io;
5764 bool result;
5765
5766 if (!status_update_prepare(&io, type))
5767 return FALSE;
5768
5769 result = status_update_write(&io, status, type);
5770 return io_done(&io) && result;
5771 }
5772
5773 static bool
5774 status_update_files(struct view *view, struct line *line)
5775 {
5776 char buf[sizeof(view->ref)];
5777 struct io io;
5778 bool result = TRUE;
5779 struct line *pos = view->line + view->lines;
5780 int files = 0;
5781 int file, done;
5782 int cursor_y = -1, cursor_x = -1;
5783
5784 if (!status_update_prepare(&io, line->type))
5785 return FALSE;
5786
5787 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5788 files++;
5789
5790 string_copy(buf, view->ref);
5791 getsyx(cursor_y, cursor_x);
5792 for (file = 0, done = 5; result && file < files; line++, file++) {
5793 int almost_done = file * 100 / files;
5794
5795 if (almost_done > done) {
5796 done = almost_done;
5797 string_format(view->ref, "updating file %u of %u (%d%% done)",
5798 file, files, done);
5799 update_view_title(view);
5800 setsyx(cursor_y, cursor_x);
5801 doupdate();
5802 }
5803 result = status_update_write(&io, line->data, line->type);
5804 }
5805 string_copy(view->ref, buf);
5806
5807 return io_done(&io) && result;
5808 }
5809
5810 static bool
5811 status_update(struct view *view)
5812 {
5813 struct line *line = &view->line[view->lineno];
5814
5815 assert(view->lines);
5816
5817 if (!line->data) {
5818 /* This should work even for the "On branch" line. */
5819 if (line < view->line + view->lines && !line[1].data) {
5820 report("Nothing to update");
5821 return FALSE;
5822 }
5823
5824 if (!status_update_files(view, line + 1)) {
5825 report("Failed to update file status");
5826 return FALSE;
5827 }
5828
5829 } else if (!status_update_file(line->data, line->type)) {
5830 report("Failed to update file status");
5831 return FALSE;
5832 }
5833
5834 return TRUE;
5835 }
5836
5837 static bool
5838 status_revert(struct status *status, enum line_type type, bool has_none)
5839 {
5840 if (!status || type != LINE_STAT_UNSTAGED) {
5841 if (type == LINE_STAT_STAGED) {
5842 report("Cannot revert changes to staged files");
5843 } else if (type == LINE_STAT_UNTRACKED) {
5844 report("Cannot revert changes to untracked files");
5845 } else if (has_none) {
5846 report("Nothing to revert");
5847 } else {
5848 report("Cannot revert changes to multiple files");
5849 }
5850
5851 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5852 char mode[10] = "100644";
5853 const char *reset_argv[] = {
5854 "git", "update-index", "--cacheinfo", mode,
5855 status->old.rev, status->old.name, NULL
5856 };
5857 const char *checkout_argv[] = {
5858 "git", "checkout", "--", status->old.name, NULL
5859 };
5860
5861 if (status->status == 'U') {
5862 string_format(mode, "%5o", status->old.mode);
5863
5864 if (status->old.mode == 0 && status->new.mode == 0) {
5865 reset_argv[2] = "--force-remove";
5866 reset_argv[3] = status->old.name;
5867 reset_argv[4] = NULL;
5868 }
5869
5870 if (!io_run_fg(reset_argv, opt_cdup))
5871 return FALSE;
5872 if (status->old.mode == 0 && status->new.mode == 0)
5873 return TRUE;
5874 }
5875
5876 return io_run_fg(checkout_argv, opt_cdup);
5877 }
5878
5879 return FALSE;
5880 }
5881
5882 static enum request
5883 status_request(struct view *view, enum request request, struct line *line)
5884 {
5885 struct status *status = line->data;
5886
5887 switch (request) {
5888 case REQ_STATUS_UPDATE:
5889 if (!status_update(view))
5890 return REQ_NONE;
5891 break;
5892
5893 case REQ_STATUS_REVERT:
5894 if (!status_revert(status, line->type, status_has_none(view, line)))
5895 return REQ_NONE;
5896 break;
5897
5898 case REQ_STATUS_MERGE:
5899 if (!status || status->status != 'U') {
5900 report("Merging only possible for files with unmerged status ('U').");
5901 return REQ_NONE;
5902 }
5903 open_mergetool(status->new.name);
5904 break;
5905
5906 case REQ_EDIT:
5907 if (!status)
5908 return request;
5909 if (status->status == 'D') {
5910 report("File has been deleted.");
5911 return REQ_NONE;
5912 }
5913
5914 open_editor(status->new.name);
5915 break;
5916
5917 case REQ_VIEW_BLAME:
5918 if (status)
5919 opt_ref[0] = 0;
5920 return request;
5921
5922 case REQ_ENTER:
5923 /* After returning the status view has been split to
5924 * show the stage view. No further reloading is
5925 * necessary. */
5926 return status_enter(view, line);
5927
5928 case REQ_REFRESH:
5929 /* Simply reload the view. */
5930 break;
5931
5932 default:
5933 return request;
5934 }
5935
5936 refresh_view(view);
5937
5938 return REQ_NONE;
5939 }
5940
5941 static void
5942 status_select(struct view *view, struct line *line)
5943 {
5944 struct status *status = line->data;
5945 char file[SIZEOF_STR] = "all files";
5946 const char *text;
5947 const char *key;
5948
5949 if (status && !string_format(file, "'%s'", status->new.name))
5950 return;
5951
5952 if (!status && line[1].type == LINE_STAT_NONE)
5953 line++;
5954
5955 switch (line->type) {
5956 case LINE_STAT_STAGED:
5957 text = "Press %s to unstage %s for commit";
5958 break;
5959
5960 case LINE_STAT_UNSTAGED:
5961 text = "Press %s to stage %s for commit";
5962 break;
5963
5964 case LINE_STAT_UNTRACKED:
5965 text = "Press %s to stage %s for addition";
5966 break;
5967
5968 case LINE_STAT_HEAD:
5969 case LINE_STAT_NONE:
5970 text = "Nothing to update";
5971 break;
5972
5973 default:
5974 die("line type %d not handled in switch", line->type);
5975 }
5976
5977 if (status && status->status == 'U') {
5978 text = "Press %s to resolve conflict in %s";
5979 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5980
5981 } else {
5982 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5983 }
5984
5985 string_format(view->ref, text, key, file);
5986 if (status)
5987 string_copy(opt_file, status->new.name);
5988 }
5989
5990 static bool
5991 status_grep(struct view *view, struct line *line)
5992 {
5993 struct status *status = line->data;
5994
5995 if (status) {
5996 const char buf[2] = { status->status, 0 };
5997 const char *text[] = { status->new.name, buf, NULL };
5998
5999 return grep_text(view, text);
6000 }
6001
6002 return FALSE;
6003 }
6004
6005 static struct view_ops status_ops = {
6006 "file",
6007 0,
6008 status_open,
6009 NULL,
6010 status_draw,
6011 status_request,
6012 status_grep,
6013 status_select,
6014 };
6015
6016
6017 struct stage_state {
6018 struct diff_state diff;
6019 size_t chunks;
6020 int *chunk;
6021 };
6022
6023 static bool
6024 stage_diff_write(struct io *io, struct line *line, struct line *end)
6025 {
6026 while (line < end) {
6027 if (!io_write(io, line->data, strlen(line->data)) ||
6028 !io_write(io, "\n", 1))
6029 return FALSE;
6030 line++;
6031 if (line->type == LINE_DIFF_CHUNK ||
6032 line->type == LINE_DIFF_HEADER)
6033 break;
6034 }
6035
6036 return TRUE;
6037 }
6038
6039 static bool
6040 stage_apply_chunk(struct view *view, struct line *chunk, struct line *line, bool revert)
6041 {
6042 const char *apply_argv[SIZEOF_ARG] = {
6043 "git", "apply", "--whitespace=nowarn", NULL
6044 };
6045 struct line *diff_hdr;
6046 struct io io;
6047 int argc = 3;
6048
6049 diff_hdr = find_prev_line_by_type(view, chunk, LINE_DIFF_HEADER);
6050 if (!diff_hdr)
6051 return FALSE;
6052
6053 if (!revert)
6054 apply_argv[argc++] = "--cached";
6055 if (line != NULL)
6056 apply_argv[argc++] = "--unidiff-zero";
6057 if (revert || stage_line_type == LINE_STAT_STAGED)
6058 apply_argv[argc++] = "-R";
6059 apply_argv[argc++] = "-";
6060 apply_argv[argc++] = NULL;
6061 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
6062 return FALSE;
6063
6064 if (line != NULL) {
6065 int lineno = 0;
6066 struct line *context = chunk + 1;
6067 const char *markers[] = {
6068 line->type == LINE_DIFF_DEL ? "" : ",0",
6069 line->type == LINE_DIFF_DEL ? ",0" : "",
6070 };
6071
6072 parse_chunk_lineno(&lineno, chunk->data, line->type == LINE_DIFF_DEL ? '+' : '-');
6073
6074 while (context < line) {
6075 if (context->type == LINE_DIFF_CHUNK || context->type == LINE_DIFF_HEADER) {
6076 break;
6077 } else if (context->type != LINE_DIFF_DEL && context->type != LINE_DIFF_ADD) {
6078 lineno++;
6079 }
6080 context++;
6081 }
6082
6083 if (!stage_diff_write(&io, diff_hdr, chunk) ||
6084 !io_printf(&io, "@@ -%d%s +%d%s @@\n",
6085 lineno, markers[0], lineno, markers[1]) ||
6086 !stage_diff_write(&io, line, line + 1)) {
6087 chunk = NULL;
6088 }
6089 } else {
6090 if (!stage_diff_write(&io, diff_hdr, chunk) ||
6091 !stage_diff_write(&io, chunk, view->line + view->lines))
6092 chunk = NULL;
6093 }
6094
6095 io_done(&io);
6096 io_run_bg(update_index_argv);
6097
6098 return chunk ? TRUE : FALSE;
6099 }
6100
6101 static bool
6102 stage_update(struct view *view, struct line *line, bool single)
6103 {
6104 struct line *chunk = NULL;
6105
6106 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
6107 chunk = find_prev_line_by_type(view, line, LINE_DIFF_CHUNK);
6108
6109 if (chunk) {
6110 if (!stage_apply_chunk(view, chunk, single ? line : NULL, FALSE)) {
6111 report("Failed to apply chunk");
6112 return FALSE;
6113 }
6114
6115 } else if (!stage_status.status) {
6116 view = view->parent;
6117
6118 for (line = view->line; line < view->line + view->lines; line++)
6119 if (line->type == stage_line_type)
6120 break;
6121
6122 if (!status_update_files(view, line + 1)) {
6123 report("Failed to update files");
6124 return FALSE;
6125 }
6126
6127 } else if (!status_update_file(&stage_status, stage_line_type)) {
6128 report("Failed to update file");
6129 return FALSE;
6130 }
6131
6132 return TRUE;
6133 }
6134
6135 static bool
6136 stage_revert(struct view *view, struct line *line)
6137 {
6138 struct line *chunk = NULL;
6139
6140 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
6141 chunk = find_prev_line_by_type(view, line, LINE_DIFF_CHUNK);
6142
6143 if (chunk) {
6144 if (!prompt_yesno("Are you sure you want to revert changes?"))
6145 return FALSE;
6146
6147 if (!stage_apply_chunk(view, chunk, NULL, TRUE)) {
6148 report("Failed to revert chunk");
6149 return FALSE;
6150 }
6151 return TRUE;
6152
6153 } else {
6154 return status_revert(stage_status.status ? &stage_status : NULL,
6155 stage_line_type, FALSE);
6156 }
6157 }
6158
6159
6160 static void
6161 stage_next(struct view *view, struct line *line)
6162 {
6163 struct stage_state *state = view->private;
6164 int i;
6165
6166 if (!state->chunks) {
6167 for (line = view->line; line < view->line + view->lines; line++) {
6168 if (line->type != LINE_DIFF_CHUNK)
6169 continue;
6170
6171 if (!realloc_ints(&state->chunk, state->chunks, 1)) {
6172 report("Allocation failure");
6173 return;
6174 }
6175
6176 state->chunk[state->chunks++] = line - view->line;
6177 }
6178 }
6179
6180 for (i = 0; i < state->chunks; i++) {
6181 if (state->chunk[i] > view->lineno) {
6182 do_scroll_view(view, state->chunk[i] - view->lineno);
6183 report("Chunk %d of %d", i + 1, state->chunks);
6184 return;
6185 }
6186 }
6187
6188 report("No next chunk found");
6189 }
6190
6191 static enum request
6192 stage_request(struct view *view, enum request request, struct line *line)
6193 {
6194 switch (request) {
6195 case REQ_STATUS_UPDATE:
6196 if (!stage_update(view, line, FALSE))
6197 return REQ_NONE;
6198 break;
6199
6200 case REQ_STATUS_REVERT:
6201 if (!stage_revert(view, line))
6202 return REQ_NONE;
6203 break;
6204
6205 case REQ_STAGE_UPDATE_LINE:
6206 if (line->type != LINE_DIFF_DEL && line->type != LINE_DIFF_ADD) {
6207 report("Please select a change to stage");
6208 return REQ_NONE;
6209 }
6210 if (!stage_update(view, line, TRUE))
6211 return REQ_NONE;
6212 break;
6213
6214 case REQ_STAGE_NEXT:
6215 if (stage_line_type == LINE_STAT_UNTRACKED) {
6216 report("File is untracked; press %s to add",
6217 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
6218 return REQ_NONE;
6219 }
6220 stage_next(view, line);
6221 return REQ_NONE;
6222
6223 case REQ_EDIT:
6224 if (!stage_status.new.name[0])
6225 return request;
6226 if (stage_status.status == 'D') {
6227 report("File has been deleted.");
6228 return REQ_NONE;
6229 }
6230
6231 open_editor(stage_status.new.name);
6232 break;
6233
6234 case REQ_REFRESH:
6235 /* Reload everything ... */
6236 break;
6237
6238 case REQ_VIEW_BLAME:
6239 if (stage_status.new.name[0]) {
6240 string_copy(opt_file, stage_status.new.name);
6241 opt_ref[0] = 0;
6242 }
6243 return request;
6244
6245 case REQ_ENTER:
6246 return diff_common_enter(view, request, line);
6247
6248 case REQ_DIFF_CONTEXT_UP:
6249 case REQ_DIFF_CONTEXT_DOWN:
6250 if (!update_diff_context(request))
6251 return REQ_NONE;
6252 break;
6253
6254 default:
6255 return request;
6256 }
6257
6258 refresh_view(view->parent);
6259
6260 /* Check whether the staged entry still exists, and close the
6261 * stage view if it doesn't. */
6262 if (!status_exists(view->parent, &stage_status, stage_line_type)) {
6263 status_restore(view->parent);
6264 return REQ_VIEW_CLOSE;
6265 }
6266
6267 refresh_view(view);
6268
6269 return REQ_NONE;
6270 }
6271
6272 static bool
6273 stage_open(struct view *view, enum open_flags flags)
6274 {
6275 static const char *no_head_diff_argv[] = {
6276 "git", "diff", "--no-color", "--patch-with-stat",
6277 opt_diff_context_arg,
6278 "--", "/dev/null", stage_status.new.name, NULL
6279 };
6280 static const char *index_show_argv[] = {
6281 "git", "diff-index", "--root", "--patch-with-stat", "-C", "-M",
6282 "--cached", opt_diff_context_arg, "HEAD", "--",
6283 stage_status.old.name, stage_status.new.name, NULL
6284 };
6285 static const char *files_show_argv[] = {
6286 "git", "diff-files", "--root", "--patch-with-stat",
6287 "-C", "-M", opt_diff_context_arg, "--",
6288 stage_status.old.name, stage_status.new.name, NULL
6289 };
6290 /* Diffs for unmerged entries are empty when passing the new
6291 * path, so leave out the new path. */
6292 static const char *files_unmerged_argv[] = {
6293 "git", "diff-files", "--root", "--patch-with-stat",
6294 "-C", "-M", opt_diff_context_arg, "--",
6295 stage_status.old.name, NULL
6296 };
6297 static const char *file_argv[] = { opt_cdup, stage_status.new.name, NULL };
6298 const char **argv = NULL;
6299 const char *info;
6300
6301 switch (stage_line_type) {
6302 case LINE_STAT_STAGED:
6303 if (is_initial_commit()) {
6304 argv = no_head_diff_argv;
6305 } else {
6306 argv = index_show_argv;
6307 }
6308 if (stage_status.status)
6309 info = "Staged changes to %s";
6310 else
6311 info = "Staged changes";
6312 break;
6313
6314 case LINE_STAT_UNSTAGED:
6315 if (stage_status.status != 'U')
6316 argv = files_show_argv;
6317 else
6318 argv = files_unmerged_argv;
6319 if (stage_status.status)
6320 info = "Unstaged changes to %s";
6321 else
6322 info = "Unstaged changes";
6323 break;
6324
6325 case LINE_STAT_UNTRACKED:
6326 info = "Untracked file %s";
6327 argv = file_argv;
6328 break;
6329
6330 case LINE_STAT_HEAD:
6331 default:
6332 die("line type %d not handled in switch", stage_line_type);
6333 }
6334
6335 string_format(view->ref, info, stage_status.new.name);
6336 view->vid[0] = 0;
6337 view->dir = opt_cdup;
6338 return argv_copy(&view->argv, argv)
6339 && begin_update(view, NULL, NULL, flags);
6340 }
6341
6342 static bool
6343 stage_read(struct view *view, char *data)
6344 {
6345 struct stage_state *state = view->private;
6346
6347 if (data && diff_common_read(view, data, &state->diff))
6348 return TRUE;
6349
6350 return pager_read(view, data);
6351 }
6352
6353 static struct view_ops stage_ops = {
6354 "line",
6355 sizeof(struct stage_state),
6356 stage_open,
6357 stage_read,
6358 diff_common_draw,
6359 stage_request,
6360 pager_grep,
6361 pager_select,
6362 };
6363
6364
6365 /*
6366 * Revision graph
6367 */
6368
6369 static const enum line_type graph_colors[] = {
6370 LINE_PALETTE_0,
6371 LINE_PALETTE_1,
6372 LINE_PALETTE_2,
6373 LINE_PALETTE_3,
6374 LINE_PALETTE_4,
6375 LINE_PALETTE_5,
6376 LINE_PALETTE_6,
6377 };
6378
6379 static enum line_type get_graph_color(struct graph_symbol *symbol)
6380 {
6381 if (symbol->commit)
6382 return LINE_GRAPH_COMMIT;
6383 assert(symbol->color < ARRAY_SIZE(graph_colors));
6384 return graph_colors[symbol->color];
6385 }
6386
6387 static bool
6388 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
6389 {
6390 const char *chars = graph_symbol_to_utf8(symbol);
6391
6392 return draw_text(view, color, chars + !!first);
6393 }
6394
6395 static bool
6396 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
6397 {
6398 const char *chars = graph_symbol_to_ascii(symbol);
6399
6400 return draw_text(view, color, chars + !!first);
6401 }
6402
6403 static bool
6404 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
6405 {
6406 const chtype *chars = graph_symbol_to_chtype(symbol);
6407
6408 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
6409 }
6410
6411 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
6412
6413 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
6414 {
6415 static const draw_graph_fn fns[] = {
6416 draw_graph_ascii,
6417 draw_graph_chtype,
6418 draw_graph_utf8
6419 };
6420 draw_graph_fn fn = fns[opt_line_graphics];
6421 int i;
6422
6423 for (i = 0; i < canvas->size; i++) {
6424 struct graph_symbol *symbol = &canvas->symbols[i];
6425 enum line_type color = get_graph_color(symbol);
6426
6427 if (fn(view, symbol, color, i == 0))
6428 return TRUE;
6429 }
6430
6431 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
6432 }
6433
6434 /*
6435 * Main view backend
6436 */
6437
6438 struct commit {
6439 char id[SIZEOF_REV]; /* SHA1 ID. */
6440 char title[128]; /* First line of the commit message. */
6441 const char *author; /* Author of the commit. */
6442 struct time time; /* Date from the author ident. */
6443 struct ref_list *refs; /* Repository references. */
6444 struct graph_canvas graph; /* Ancestry chain graphics. */
6445 };
6446
6447 static bool
6448 main_open(struct view *view, enum open_flags flags)
6449 {
6450 static const char *main_argv[] = {
6451 "git", "log", "--no-color", "--pretty=raw", "--parents",
6452 "--topo-order", "%(diffargs)", "%(revargs)",
6453 "--", "%(fileargs)", NULL
6454 };
6455
6456 return begin_update(view, NULL, main_argv, flags);
6457 }
6458
6459 static bool
6460 main_draw(struct view *view, struct line *line, unsigned int lineno)
6461 {
6462 struct commit *commit = line->data;
6463
6464 if (!commit->author)
6465 return FALSE;
6466
6467 if (opt_line_number && draw_lineno(view, lineno))
6468 return TRUE;
6469
6470 if (draw_date(view, &commit->time))
6471 return TRUE;
6472
6473 if (draw_author(view, commit->author))
6474 return TRUE;
6475
6476 if (opt_rev_graph && draw_graph(view, &commit->graph))
6477 return TRUE;
6478
6479 if (draw_refs(view, commit->refs))
6480 return TRUE;
6481
6482 draw_text(view, LINE_DEFAULT, commit->title);
6483 return TRUE;
6484 }
6485
6486 /* Reads git log --pretty=raw output and parses it into the commit struct. */
6487 static bool
6488 main_read(struct view *view, char *line)
6489 {
6490 struct graph *graph = view->private;
6491 enum line_type type;
6492 struct commit *commit;
6493
6494 if (!line) {
6495 if (!view->lines && !view->prev)
6496 die("No revisions match the given arguments.");
6497 if (view->lines > 0) {
6498 commit = view->line[view->lines - 1].data;
6499 view->line[view->lines - 1].dirty = 1;
6500 if (!commit->author) {
6501 view->lines--;
6502 free(commit);
6503 }
6504 }
6505
6506 done_graph(graph);
6507 return TRUE;
6508 }
6509
6510 type = get_line_type(line);
6511 if (type == LINE_COMMIT) {
6512 bool is_boundary;
6513
6514 commit = calloc(1, sizeof(struct commit));
6515 if (!commit)
6516 return FALSE;
6517
6518 line += STRING_SIZE("commit ");
6519 is_boundary = *line == '-';
6520 if (is_boundary)
6521 line++;
6522
6523 string_copy_rev(commit->id, line);
6524 commit->refs = get_ref_list(commit->id);
6525 add_line_data(view, commit, LINE_MAIN_COMMIT);
6526 graph_add_commit(graph, &commit->graph, commit->id, line, is_boundary);
6527 return TRUE;
6528 }
6529
6530 if (!view->lines)
6531 return TRUE;
6532 commit = view->line[view->lines - 1].data;
6533
6534 switch (type) {
6535 case LINE_PARENT:
6536 if (!graph->has_parents)
6537 graph_add_parent(graph, line + STRING_SIZE("parent "));
6538 break;
6539
6540 case LINE_AUTHOR:
6541 parse_author_line(line + STRING_SIZE("author "),
6542 &commit->author, &commit->time);
6543 graph_render_parents(graph);
6544 break;
6545
6546 default:
6547 /* Fill in the commit title if it has not already been set. */
6548 if (commit->title[0])
6549 break;
6550
6551 /* Require titles to start with a non-space character at the
6552 * offset used by git log. */
6553 if (strncmp(line, " ", 4))
6554 break;
6555 line += 4;
6556 /* Well, if the title starts with a whitespace character,
6557 * try to be forgiving. Otherwise we end up with no title. */
6558 while (isspace(*line))
6559 line++;
6560 if (*line == '\0')
6561 break;
6562 /* FIXME: More graceful handling of titles; append "..." to
6563 * shortened titles, etc. */
6564
6565 string_expand(commit->title, sizeof(commit->title), line, 1);
6566 view->line[view->lines - 1].dirty = 1;
6567 }
6568
6569 return TRUE;
6570 }
6571
6572 static enum request
6573 main_request(struct view *view, enum request request, struct line *line)
6574 {
6575 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
6576
6577 switch (request) {
6578 case REQ_ENTER:
6579 if (view_is_displayed(view) && display[0] != view)
6580 maximize_view(view, TRUE);
6581 open_view(view, REQ_VIEW_DIFF, flags);
6582 break;
6583 case REQ_REFRESH:
6584 load_refs();
6585 refresh_view(view);
6586 break;
6587
6588 case REQ_JUMP_COMMIT:
6589 {
6590 int lineno;
6591
6592 for (lineno = 0; lineno < view->lines; lineno++) {
6593 struct commit *commit = view->line[lineno].data;
6594
6595 if (!strncasecmp(commit->id, opt_search, strlen(opt_search))) {
6596 select_view_line(view, lineno);
6597 report("");
6598 return REQ_NONE;
6599 }
6600 }
6601
6602 report("Unable to find commit '%s'", opt_search);
6603 break;
6604 }
6605 default:
6606 return request;
6607 }
6608
6609 return REQ_NONE;
6610 }
6611
6612 static bool
6613 grep_refs(struct ref_list *list, regex_t *regex)
6614 {
6615 regmatch_t pmatch;
6616 size_t i;
6617
6618 if (!opt_show_refs || !list)
6619 return FALSE;
6620
6621 for (i = 0; i < list->size; i++) {
6622 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
6623 return TRUE;
6624 }
6625
6626 return FALSE;
6627 }
6628
6629 static bool
6630 main_grep(struct view *view, struct line *line)
6631 {
6632 struct commit *commit = line->data;
6633 const char *text[] = {
6634 commit->title,
6635 mkauthor(commit->author, opt_author_cols, opt_author),
6636 mkdate(&commit->time, opt_date),
6637 NULL
6638 };
6639
6640 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
6641 }
6642
6643 static void
6644 main_select(struct view *view, struct line *line)
6645 {
6646 struct commit *commit = line->data;
6647
6648 string_copy_rev(view->ref, commit->id);
6649 string_copy_rev(ref_commit, view->ref);
6650 }
6651
6652 static struct view_ops main_ops = {
6653 "commit",
6654 sizeof(struct graph),
6655 main_open,
6656 main_read,
6657 main_draw,
6658 main_request,
6659 main_grep,
6660 main_select,
6661 };
6662
6663
6664 /*
6665 * Status management
6666 */
6667
6668 /* Whether or not the curses interface has been initialized. */
6669 static bool cursed = FALSE;
6670
6671 /* Terminal hacks and workarounds. */
6672 static bool use_scroll_redrawwin;
6673 static bool use_scroll_status_wclear;
6674
6675 /* The status window is used for polling keystrokes. */
6676 static WINDOW *status_win;
6677
6678 /* Reading from the prompt? */
6679 static bool input_mode = FALSE;
6680
6681 static bool status_empty = FALSE;
6682
6683 /* Update status and title window. */
6684 static void
6685 report(const char *msg, ...)
6686 {
6687 struct view *view = display[current_view];
6688
6689 if (input_mode)
6690 return;
6691
6692 if (!view) {
6693 char buf[SIZEOF_STR];
6694 int retval;
6695
6696 FORMAT_BUFFER(buf, sizeof(buf), msg, retval);
6697 if (retval >= sizeof(buf)) {
6698 buf[sizeof(buf) - 1] = 0;
6699 buf[sizeof(buf) - 2] = '.';
6700 buf[sizeof(buf) - 3] = '.';
6701 buf[sizeof(buf) - 4] = '.';
6702 }
6703 die("%s", buf);
6704 }
6705
6706 if (!status_empty || *msg) {
6707 va_list args;
6708
6709 va_start(args, msg);
6710
6711 wmove(status_win, 0, 0);
6712 if (view->has_scrolled && use_scroll_status_wclear)
6713 wclear(status_win);
6714 if (*msg) {
6715 vwprintw(status_win, msg, args);
6716 status_empty = FALSE;
6717 } else {
6718 status_empty = TRUE;
6719 }
6720 wclrtoeol(status_win);
6721 wnoutrefresh(status_win);
6722
6723 va_end(args);
6724 }
6725
6726 update_view_title(view);
6727 }
6728
6729 static void
6730 init_display(void)
6731 {
6732 const char *term;
6733 int x, y;
6734
6735 /* Initialize the curses library */
6736 if (isatty(STDIN_FILENO)) {
6737 cursed = !!initscr();
6738 opt_tty = stdin;
6739 } else {
6740 /* Leave stdin and stdout alone when acting as a pager. */
6741 opt_tty = fopen("/dev/tty", "r+");
6742 if (!opt_tty)
6743 die("Failed to open /dev/tty");
6744 cursed = !!newterm(NULL, opt_tty, opt_tty);
6745 }
6746
6747 if (!cursed)
6748 die("Failed to initialize curses");
6749
6750 nonl(); /* Disable conversion and detect newlines from input. */
6751 cbreak(); /* Take input chars one at a time, no wait for \n */
6752 noecho(); /* Don't echo input */
6753 leaveok(stdscr, FALSE);
6754
6755 if (has_colors())
6756 init_colors();
6757
6758 getmaxyx(stdscr, y, x);
6759 status_win = newwin(1, x, y - 1, 0);
6760 if (!status_win)
6761 die("Failed to create status window");
6762
6763 /* Enable keyboard mapping */
6764 keypad(status_win, TRUE);
6765 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6766
6767 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6768 set_tabsize(opt_tab_size);
6769 #else
6770 TABSIZE = opt_tab_size;
6771 #endif
6772
6773 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6774 if (term && !strcmp(term, "gnome-terminal")) {
6775 /* In the gnome-terminal-emulator, the message from
6776 * scrolling up one line when impossible followed by
6777 * scrolling down one line causes corruption of the
6778 * status line. This is fixed by calling wclear. */
6779 use_scroll_status_wclear = TRUE;
6780 use_scroll_redrawwin = FALSE;
6781
6782 } else if (term && !strcmp(term, "xrvt-xpm")) {
6783 /* No problems with full optimizations in xrvt-(unicode)
6784 * and aterm. */
6785 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6786
6787 } else {
6788 /* When scrolling in (u)xterm the last line in the
6789 * scrolling direction will update slowly. */
6790 use_scroll_redrawwin = TRUE;
6791 use_scroll_status_wclear = FALSE;
6792 }
6793 }
6794
6795 static int
6796 get_input(int prompt_position)
6797 {
6798 struct view *view;
6799 int i, key, cursor_y, cursor_x;
6800
6801 if (prompt_position)
6802 input_mode = TRUE;
6803
6804 while (TRUE) {
6805 bool loading = FALSE;
6806
6807 foreach_view (view, i) {
6808 update_view(view);
6809 if (view_is_displayed(view) && view->has_scrolled &&
6810 use_scroll_redrawwin)
6811 redrawwin(view->win);
6812 view->has_scrolled = FALSE;
6813 if (view->pipe)
6814 loading = TRUE;
6815 }
6816
6817 /* Update the cursor position. */
6818 if (prompt_position) {
6819 getbegyx(status_win, cursor_y, cursor_x);
6820 cursor_x = prompt_position;
6821 } else {
6822 view = display[current_view];
6823 getbegyx(view->win, cursor_y, cursor_x);
6824 cursor_x = view->width - 1;
6825 cursor_y += view->lineno - view->offset;
6826 }
6827 setsyx(cursor_y, cursor_x);
6828
6829 /* Refresh, accept single keystroke of input */
6830 doupdate();
6831 nodelay(status_win, loading);
6832 key = wgetch(status_win);
6833
6834 /* wgetch() with nodelay() enabled returns ERR when
6835 * there's no input. */
6836 if (key == ERR) {
6837
6838 } else if (key == KEY_RESIZE) {
6839 int height, width;
6840
6841 getmaxyx(stdscr, height, width);
6842
6843 wresize(status_win, 1, width);
6844 mvwin(status_win, height - 1, 0);
6845 wnoutrefresh(status_win);
6846 resize_display();
6847 redraw_display(TRUE);
6848
6849 } else {
6850 input_mode = FALSE;
6851 if (key == erasechar())
6852 key = KEY_BACKSPACE;
6853 return key;
6854 }
6855 }
6856 }
6857
6858 static char *
6859 prompt_input(const char *prompt, input_handler handler, void *data)
6860 {
6861 enum input_status status = INPUT_OK;
6862 static char buf[SIZEOF_STR];
6863 size_t pos = 0;
6864
6865 buf[pos] = 0;
6866
6867 while (status == INPUT_OK || status == INPUT_SKIP) {
6868 int key;
6869
6870 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6871 wclrtoeol(status_win);
6872
6873 key = get_input(pos + 1);
6874 switch (key) {
6875 case KEY_RETURN:
6876 case KEY_ENTER:
6877 case '\n':
6878 status = pos ? INPUT_STOP : INPUT_CANCEL;
6879 break;
6880
6881 case KEY_BACKSPACE:
6882 if (pos > 0)
6883 buf[--pos] = 0;
6884 else
6885 status = INPUT_CANCEL;
6886 break;
6887
6888 case KEY_ESC:
6889 status = INPUT_CANCEL;
6890 break;
6891
6892 default:
6893 if (pos >= sizeof(buf)) {
6894 report("Input string too long");
6895 return NULL;
6896 }
6897
6898 status = handler(data, buf, key);
6899 if (status == INPUT_OK)
6900 buf[pos++] = (char) key;
6901 }
6902 }
6903
6904 /* Clear the status window */
6905 status_empty = FALSE;
6906 report("");
6907
6908 if (status == INPUT_CANCEL)
6909 return NULL;
6910
6911 buf[pos++] = 0;
6912
6913 return buf;
6914 }
6915
6916 static enum input_status
6917 prompt_yesno_handler(void *data, char *buf, int c)
6918 {
6919 if (c == 'y' || c == 'Y')
6920 return INPUT_STOP;
6921 if (c == 'n' || c == 'N')
6922 return INPUT_CANCEL;
6923 return INPUT_SKIP;
6924 }
6925
6926 static bool
6927 prompt_yesno(const char *prompt)
6928 {
6929 char prompt2[SIZEOF_STR];
6930
6931 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6932 return FALSE;
6933
6934 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6935 }
6936
6937 static enum input_status
6938 read_prompt_handler(void *data, char *buf, int c)
6939 {
6940 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6941 }
6942
6943 static char *
6944 read_prompt(const char *prompt)
6945 {
6946 return prompt_input(prompt, read_prompt_handler, NULL);
6947 }
6948
6949 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6950 {
6951 enum input_status status = INPUT_OK;
6952 int size = 0;
6953
6954 while (items[size].text)
6955 size++;
6956
6957 while (status == INPUT_OK) {
6958 const struct menu_item *item = &items[*selected];
6959 int key;
6960 int i;
6961
6962 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6963 prompt, *selected + 1, size);
6964 if (item->hotkey)
6965 wprintw(status_win, "[%c] ", (char) item->hotkey);
6966 wprintw(status_win, "%s", item->text);
6967 wclrtoeol(status_win);
6968
6969 key = get_input(COLS - 1);
6970 switch (key) {
6971 case KEY_RETURN:
6972 case KEY_ENTER:
6973 case '\n':
6974 status = INPUT_STOP;
6975 break;
6976
6977 case KEY_LEFT:
6978 case KEY_UP:
6979 *selected = *selected - 1;
6980 if (*selected < 0)
6981 *selected = size - 1;
6982 break;
6983
6984 case KEY_RIGHT:
6985 case KEY_DOWN:
6986 *selected = (*selected + 1) % size;
6987 break;
6988
6989 case KEY_ESC:
6990 status = INPUT_CANCEL;
6991 break;
6992
6993 default:
6994 for (i = 0; items[i].text; i++)
6995 if (items[i].hotkey == key) {
6996 *selected = i;
6997 status = INPUT_STOP;
6998 break;
6999 }
7000 }
7001 }
7002
7003 /* Clear the status window */
7004 status_empty = FALSE;
7005 report("");
7006
7007 return status != INPUT_CANCEL;
7008 }
7009
7010 /*
7011 * Repository properties
7012 */
7013
7014 static struct ref **refs = NULL;
7015 static size_t refs_size = 0;
7016 static struct ref *refs_head = NULL;
7017
7018 static struct ref_list **ref_lists = NULL;
7019 static size_t ref_lists_size = 0;
7020
7021 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
7022 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
7023 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
7024
7025 static int
7026 compare_refs(const void *ref1_, const void *ref2_)
7027 {
7028 const struct ref *ref1 = *(const struct ref **)ref1_;
7029 const struct ref *ref2 = *(const struct ref **)ref2_;
7030
7031 if (ref1->tag != ref2->tag)
7032 return ref2->tag - ref1->tag;
7033 if (ref1->ltag != ref2->ltag)
7034 return ref2->ltag - ref1->ltag;
7035 if (ref1->head != ref2->head)
7036 return ref2->head - ref1->head;
7037 if (ref1->tracked != ref2->tracked)
7038 return ref2->tracked - ref1->tracked;
7039 if (ref1->replace != ref2->replace)
7040 return ref2->replace - ref1->replace;
7041 /* Order remotes last. */
7042 if (ref1->remote != ref2->remote)
7043 return ref1->remote - ref2->remote;
7044 return strcmp(ref1->name, ref2->name);
7045 }
7046
7047 static void
7048 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
7049 {
7050 size_t i;
7051
7052 for (i = 0; i < refs_size; i++)
7053 if (!visitor(data, refs[i]))
7054 break;
7055 }
7056
7057 static struct ref *
7058 get_ref_head()
7059 {
7060 return refs_head;
7061 }
7062
7063 static struct ref_list *
7064 get_ref_list(const char *id)
7065 {
7066 struct ref_list *list;
7067 size_t i;
7068
7069 for (i = 0; i < ref_lists_size; i++)
7070 if (!strcmp(id, ref_lists[i]->id))
7071 return ref_lists[i];
7072
7073 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
7074 return NULL;
7075 list = calloc(1, sizeof(*list));
7076 if (!list)
7077 return NULL;
7078
7079 for (i = 0; i < refs_size; i++) {
7080 if (!strcmp(id, refs[i]->id) &&
7081 realloc_refs_list(&list->refs, list->size, 1))
7082 list->refs[list->size++] = refs[i];
7083 }
7084
7085 if (!list->refs) {
7086 free(list);
7087 return NULL;
7088 }
7089
7090 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
7091 ref_lists[ref_lists_size++] = list;
7092 return list;
7093 }
7094
7095 static int
7096 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
7097 {
7098 struct ref *ref = NULL;
7099 bool tag = FALSE;
7100 bool ltag = FALSE;
7101 bool remote = FALSE;
7102 bool replace = FALSE;
7103 bool tracked = FALSE;
7104 bool head = FALSE;
7105 int from = 0, to = refs_size - 1;
7106
7107 if (!prefixcmp(name, "refs/tags/")) {
7108 if (!suffixcmp(name, namelen, "^{}")) {
7109 namelen -= 3;
7110 name[namelen] = 0;
7111 } else {
7112 ltag = TRUE;
7113 }
7114
7115 tag = TRUE;
7116 namelen -= STRING_SIZE("refs/tags/");
7117 name += STRING_SIZE("refs/tags/");
7118
7119 } else if (!prefixcmp(name, "refs/remotes/")) {
7120 remote = TRUE;
7121 namelen -= STRING_SIZE("refs/remotes/");
7122 name += STRING_SIZE("refs/remotes/");
7123 tracked = !strcmp(opt_remote, name);
7124
7125 } else if (!prefixcmp(name, "refs/replace/")) {
7126 replace = TRUE;
7127 id = name + strlen("refs/replace/");
7128 idlen = namelen - strlen("refs/replace/");
7129 name = "replaced";
7130 namelen = strlen(name);
7131
7132 } else if (!prefixcmp(name, "refs/heads/")) {
7133 namelen -= STRING_SIZE("refs/heads/");
7134 name += STRING_SIZE("refs/heads/");
7135 if (strlen(opt_head) == namelen
7136 && !strncmp(opt_head, name, namelen))
7137 return OK;
7138
7139 } else if (!strcmp(name, "HEAD")) {
7140 head = TRUE;
7141 if (*opt_head) {
7142 namelen = strlen(opt_head);
7143 name = opt_head;
7144 }
7145 }
7146
7147 /* If we are reloading or it's an annotated tag, replace the
7148 * previous SHA1 with the resolved commit id; relies on the fact
7149 * git-ls-remote lists the commit id of an annotated tag right
7150 * before the commit id it points to. */
7151 while ((from <= to) && !replace) {
7152 size_t pos = (to + from) / 2;
7153 int cmp = strcmp(name, refs[pos]->name);
7154
7155 if (!cmp) {
7156 ref = refs[pos];
7157 break;
7158 }
7159
7160 if (cmp < 0)
7161 to = pos - 1;
7162 else
7163 from = pos + 1;
7164 }
7165
7166 if (!ref) {
7167 if (!realloc_refs(&refs, refs_size, 1))
7168 return ERR;
7169 ref = calloc(1, sizeof(*ref) + namelen);
7170 if (!ref)
7171 return ERR;
7172 memmove(refs + from + 1, refs + from,
7173 (refs_size - from) * sizeof(*refs));
7174 refs[from] = ref;
7175 strncpy(ref->name, name, namelen);
7176 refs_size++;
7177 }
7178
7179 ref->head = head;
7180 ref->tag = tag;
7181 ref->ltag = ltag;
7182 ref->remote = remote;
7183 ref->replace = replace;
7184 ref->tracked = tracked;
7185 string_copy_rev(ref->id, id);
7186
7187 if (head)
7188 refs_head = ref;
7189 return OK;
7190 }
7191
7192 static int
7193 load_refs(void)
7194 {
7195 const char *head_argv[] = {
7196 "git", "symbolic-ref", "HEAD", NULL
7197 };
7198 static const char *ls_remote_argv[SIZEOF_ARG] = {
7199 "git", "ls-remote", opt_git_dir, NULL
7200 };
7201 static bool init = FALSE;
7202 size_t i;
7203
7204 if (!init) {
7205 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
7206 die("TIG_LS_REMOTE contains too many arguments");
7207 init = TRUE;
7208 }
7209
7210 if (!*opt_git_dir)
7211 return OK;
7212
7213 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
7214 !prefixcmp(opt_head, "refs/heads/")) {
7215 char *offset = opt_head + STRING_SIZE("refs/heads/");
7216
7217 memmove(opt_head, offset, strlen(offset) + 1);
7218 }
7219
7220 refs_head = NULL;
7221 for (i = 0; i < refs_size; i++)
7222 refs[i]->id[0] = 0;
7223
7224 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
7225 return ERR;
7226
7227 /* Update the ref lists to reflect changes. */
7228 for (i = 0; i < ref_lists_size; i++) {
7229 struct ref_list *list = ref_lists[i];
7230 size_t old, new;
7231
7232 for (old = new = 0; old < list->size; old++)
7233 if (!strcmp(list->id, list->refs[old]->id))
7234 list->refs[new++] = list->refs[old];
7235 list->size = new;
7236 }
7237
7238 qsort(refs, refs_size, sizeof(*refs), compare_refs);
7239
7240 return OK;
7241 }
7242
7243 static void
7244 set_remote_branch(const char *name, const char *value, size_t valuelen)
7245 {
7246 if (!strcmp(name, ".remote")) {
7247 string_ncopy(opt_remote, value, valuelen);
7248
7249 } else if (*opt_remote && !strcmp(name, ".merge")) {
7250 size_t from = strlen(opt_remote);
7251
7252 if (!prefixcmp(value, "refs/heads/"))
7253 value += STRING_SIZE("refs/heads/");
7254
7255 if (!string_format_from(opt_remote, &from, "/%s", value))
7256 opt_remote[0] = 0;
7257 }
7258 }
7259
7260 static void
7261 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
7262 {
7263 const char *argv[SIZEOF_ARG] = { name, "=" };
7264 int argc = 1 + (cmd == option_set_command);
7265 enum option_code error;
7266
7267 if (!argv_from_string(argv, &argc, value))
7268 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
7269 else
7270 error = cmd(argc, argv);
7271
7272 if (error != OPT_OK)
7273 warn("Option 'tig.%s': %s", name, option_errors[error]);
7274 }
7275
7276 static bool
7277 set_environment_variable(const char *name, const char *value)
7278 {
7279 size_t len = strlen(name) + 1 + strlen(value) + 1;
7280 char *env = malloc(len);
7281
7282 if (env &&
7283 string_nformat(env, len, NULL, "%s=%s", name, value) &&
7284 putenv(env) == 0)
7285 return TRUE;
7286 free(env);
7287 return FALSE;
7288 }
7289
7290 static void
7291 set_work_tree(const char *value)
7292 {
7293 char cwd[SIZEOF_STR];
7294
7295 if (!getcwd(cwd, sizeof(cwd)))
7296 die("Failed to get cwd path: %s", strerror(errno));
7297 if (chdir(opt_git_dir) < 0)
7298 die("Failed to chdir(%s): %s", strerror(errno));
7299 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
7300 die("Failed to get git path: %s", strerror(errno));
7301 if (chdir(cwd) < 0)
7302 die("Failed to chdir(%s): %s", cwd, strerror(errno));
7303 if (chdir(value) < 0)
7304 die("Failed to chdir(%s): %s", value, strerror(errno));
7305 if (!getcwd(cwd, sizeof(cwd)))
7306 die("Failed to get cwd path: %s", strerror(errno));
7307 if (!set_environment_variable("GIT_WORK_TREE", cwd))
7308 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
7309 if (!set_environment_variable("GIT_DIR", opt_git_dir))
7310 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
7311 opt_is_inside_work_tree = TRUE;
7312 }
7313
7314 static int
7315 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
7316 {
7317 if (!strcmp(name, "i18n.commitencoding"))
7318 string_ncopy(opt_encoding, value, valuelen);
7319
7320 else if (!strcmp(name, "core.editor"))
7321 string_ncopy(opt_editor, value, valuelen);
7322
7323 else if (!strcmp(name, "core.worktree"))
7324 set_work_tree(value);
7325
7326 else if (!prefixcmp(name, "tig.color."))
7327 set_repo_config_option(name + 10, value, option_color_command);
7328
7329 else if (!prefixcmp(name, "tig.bind."))
7330 set_repo_config_option(name + 9, value, option_bind_command);
7331
7332 else if (!prefixcmp(name, "tig."))
7333 set_repo_config_option(name + 4, value, option_set_command);
7334
7335 else if (*opt_head && !prefixcmp(name, "branch.") &&
7336 !strncmp(name + 7, opt_head, strlen(opt_head)))
7337 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
7338
7339 return OK;
7340 }
7341
7342 static int
7343 load_git_config(void)
7344 {
7345 const char *config_list_argv[] = { "git", "config", "--list", NULL };
7346
7347 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
7348 }
7349
7350 static int
7351 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
7352 {
7353 if (!opt_git_dir[0]) {
7354 string_ncopy(opt_git_dir, name, namelen);
7355
7356 } else if (opt_is_inside_work_tree == -1) {
7357 /* This can be 3 different values depending on the
7358 * version of git being used. If git-rev-parse does not
7359 * understand --is-inside-work-tree it will simply echo
7360 * the option else either "true" or "false" is printed.
7361 * Default to true for the unknown case. */
7362 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
7363
7364 } else if (*name == '.') {
7365 string_ncopy(opt_cdup, name, namelen);
7366
7367 } else {
7368 string_ncopy(opt_prefix, name, namelen);
7369 }
7370
7371 return OK;
7372 }
7373
7374 static int
7375 load_repo_info(void)
7376 {
7377 const char *rev_parse_argv[] = {
7378 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
7379 "--show-cdup", "--show-prefix", NULL
7380 };
7381
7382 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
7383 }
7384
7385
7386 /*
7387 * Main
7388 */
7389
7390 static const char usage[] =
7391 "tig " TIG_VERSION " (" __DATE__ ")\n"
7392 "\n"
7393 "Usage: tig [options] [revs] [--] [paths]\n"
7394 " or: tig show [options] [revs] [--] [paths]\n"
7395 " or: tig blame [options] [rev] [--] path\n"
7396 " or: tig status\n"
7397 " or: tig < [git command output]\n"
7398 "\n"
7399 "Options:\n"
7400 " +<number> Select line <number> in the first view\n"
7401 " -v, --version Show version and exit\n"
7402 " -h, --help Show help message and exit";
7403
7404 static void __NORETURN
7405 quit(int sig)
7406 {
7407 /* XXX: Restore tty modes and let the OS cleanup the rest! */
7408 if (cursed)
7409 endwin();
7410 exit(0);
7411 }
7412
7413 static void __NORETURN
7414 die(const char *err, ...)
7415 {
7416 va_list args;
7417
7418 endwin();
7419
7420 va_start(args, err);
7421 fputs("tig: ", stderr);
7422 vfprintf(stderr, err, args);
7423 fputs("\n", stderr);
7424 va_end(args);
7425
7426 exit(1);
7427 }
7428
7429 static void
7430 warn(const char *msg, ...)
7431 {
7432 va_list args;
7433
7434 va_start(args, msg);
7435 fputs("tig warning: ", stderr);
7436 vfprintf(stderr, msg, args);
7437 fputs("\n", stderr);
7438 va_end(args);
7439 }
7440
7441 static int
7442 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
7443 {
7444 const char ***filter_args = data;
7445
7446 return argv_append(filter_args, name) ? OK : ERR;
7447 }
7448
7449 static void
7450 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
7451 {
7452 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
7453 const char **all_argv = NULL;
7454
7455 if (!argv_append_array(&all_argv, rev_parse_argv) ||
7456 !argv_append_array(&all_argv, argv) ||
7457 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
7458 die("Failed to split arguments");
7459 argv_free(all_argv);
7460 free(all_argv);
7461 }
7462
7463 static void
7464 filter_options(const char *argv[], bool blame)
7465 {
7466 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
7467
7468 if (blame)
7469 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv);
7470 else
7471 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
7472
7473 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
7474 }
7475
7476 static enum request
7477 parse_options(int argc, const char *argv[])
7478 {
7479 enum request request = REQ_VIEW_MAIN;
7480 const char *subcommand;
7481 bool seen_dashdash = FALSE;
7482 const char **filter_argv = NULL;
7483 int i;
7484
7485 if (!isatty(STDIN_FILENO))
7486 return REQ_VIEW_PAGER;
7487
7488 if (argc <= 1)
7489 return REQ_VIEW_MAIN;
7490
7491 subcommand = argv[1];
7492 if (!strcmp(subcommand, "status")) {
7493 if (argc > 2)
7494 warn("ignoring arguments after `%s'", subcommand);
7495 return REQ_VIEW_STATUS;
7496
7497 } else if (!strcmp(subcommand, "blame")) {
7498 request = REQ_VIEW_BLAME;
7499
7500 } else if (!strcmp(subcommand, "show")) {
7501 request = REQ_VIEW_DIFF;
7502
7503 } else {
7504 subcommand = NULL;
7505 }
7506
7507 for (i = 1 + !!subcommand; i < argc; i++) {
7508 const char *opt = argv[i];
7509
7510 // stop parsing our options after -- and let rev-parse handle the rest
7511 if (!seen_dashdash) {
7512 if (!strcmp(opt, "--")) {
7513 seen_dashdash = TRUE;
7514 continue;
7515
7516 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
7517 printf("tig version %s\n", TIG_VERSION);
7518 quit(0);
7519
7520 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
7521 printf("%s\n", usage);
7522 quit(0);
7523
7524 } else if (strlen(opt) >= 2 && *opt == '+' && string_isnumber(opt + 1)) {
7525 opt_lineno = atoi(opt + 1);
7526 continue;
7527
7528 }
7529 }
7530
7531 if (!argv_append(&filter_argv, opt))
7532 die("command too long");
7533 }
7534
7535 if (filter_argv)
7536 filter_options(filter_argv, request == REQ_VIEW_BLAME);
7537
7538 /* Finish validating and setting up blame options */
7539 if (request == REQ_VIEW_BLAME) {
7540 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
7541 die("invalid number of options to blame\n\n%s", usage);
7542
7543 if (opt_rev_argv) {
7544 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
7545 }
7546
7547 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
7548 }
7549
7550 return request;
7551 }
7552
7553 int
7554 main(int argc, const char *argv[])
7555 {
7556 const char *codeset = ENCODING_UTF8;
7557 enum request request = parse_options(argc, argv);
7558 struct view *view;
7559
7560 signal(SIGINT, quit);
7561 signal(SIGPIPE, SIG_IGN);
7562
7563 if (setlocale(LC_ALL, "")) {
7564 codeset = nl_langinfo(CODESET);
7565 }
7566
7567 if (load_repo_info() == ERR)
7568 die("Failed to load repo info.");
7569
7570 if (load_options() == ERR)
7571 die("Failed to load user config.");
7572
7573 if (load_git_config() == ERR)
7574 die("Failed to load repo config.");
7575
7576 /* Require a git repository unless when running in pager mode. */
7577 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
7578 die("Not a git repository");
7579
7580 if (*opt_encoding && strcmp(codeset, ENCODING_UTF8)) {
7581 opt_iconv_in = iconv_open(ENCODING_UTF8, opt_encoding);
7582 if (opt_iconv_in == ICONV_NONE)
7583 die("Failed to initialize character set conversion");
7584 }
7585
7586 if (codeset && strcmp(codeset, ENCODING_UTF8)) {
7587 char translit[SIZEOF_STR];
7588
7589 if (string_format(translit, "%s%s", codeset, ICONV_TRANSLIT))
7590 opt_iconv_out = iconv_open(translit, ENCODING_UTF8);
7591 else
7592 opt_iconv_out = iconv_open(codeset, ENCODING_UTF8);
7593 if (opt_iconv_out == ICONV_NONE)
7594 die("Failed to initialize character set conversion");
7595 }
7596
7597 if (load_refs() == ERR)
7598 die("Failed to load refs.");
7599
7600 init_display();
7601
7602 while (view_driver(display[current_view], request)) {
7603 int key = get_input(0);
7604
7605 view = display[current_view];
7606 request = get_keybinding(view->keymap, key);
7607
7608 /* Some low-level request handling. This keeps access to
7609 * status_win restricted. */
7610 switch (request) {
7611 case REQ_NONE:
7612 report("Unknown key, press %s for help",
7613 get_key(view->keymap, REQ_VIEW_HELP));
7614 break;
7615 case REQ_PROMPT:
7616 {
7617 char *cmd = read_prompt(":");
7618
7619 if (cmd && string_isnumber(cmd)) {
7620 int lineno = view->lineno + 1;
7621
7622 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OPT_OK) {
7623 select_view_line(view, lineno - 1);
7624 report("");
7625 } else {
7626 report("Unable to parse '%s' as a line number", cmd);
7627 }
7628 } else if (cmd && iscommit(cmd)) {
7629 string_ncopy(opt_search, cmd, strlen(cmd));
7630
7631 request = view_request(view, REQ_JUMP_COMMIT);
7632 if (request == REQ_JUMP_COMMIT) {
7633 report("Jumping to commits is not supported by the '%s' view", view->name);
7634 }
7635
7636 } else if (cmd) {
7637 struct view *next = VIEW(REQ_VIEW_PAGER);
7638 const char *argv[SIZEOF_ARG] = { "git" };
7639 int argc = 1;
7640
7641 /* When running random commands, initially show the
7642 * command in the title. However, it maybe later be
7643 * overwritten if a commit line is selected. */
7644 string_ncopy(next->ref, cmd, strlen(cmd));
7645
7646 if (!argv_from_string(argv, &argc, cmd)) {
7647 report("Too many arguments");
7648 } else if (!format_argv(&next->argv, argv, FALSE)) {
7649 report("Argument formatting failed");
7650 } else {
7651 next->dir = NULL;
7652 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
7653 }
7654 }
7655
7656 request = REQ_NONE;
7657 break;
7658 }
7659 case REQ_SEARCH:
7660 case REQ_SEARCH_BACK:
7661 {
7662 const char *prompt = request == REQ_SEARCH ? "/" : "?";
7663 char *search = read_prompt(prompt);
7664
7665 if (search)
7666 string_ncopy(opt_search, search, strlen(search));
7667 else if (*opt_search)
7668 request = request == REQ_SEARCH ?
7669 REQ_FIND_NEXT :
7670 REQ_FIND_PREV;
7671 else
7672 request = REQ_NONE;
7673 break;
7674 }
7675 default:
7676 break;
7677 }
7678 }
7679
7680 quit(0);
7681
7682 return 0;
7683 }
Text-mode interface for git