?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Convert begin_update to act as a view_ops open function
[tig.git] / tig.c
bloba4b27db47f2b7f52d7bab7d9a23f6e7f4db187c1
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 tracked:1; /* Is it the remote for the current HEAD? */
30 char name[1]; /* Ref name; tag or head names are shortened. */
31 };
32
33 struct ref_list {
34 char id[SIZEOF_REV]; /* Commit SHA1 ID */
35 size_t size; /* Number of refs. */
36 struct ref **refs; /* References for this ID. */
37 };
38
39 static struct ref *get_ref_head();
40 static struct ref_list *get_ref_list(const char *id);
41 static void foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data);
42 static int load_refs(void);
43
44 enum input_status {
45 INPUT_OK,
46 INPUT_SKIP,
47 INPUT_STOP,
48 INPUT_CANCEL
49 };
50
51 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
52
53 static char *prompt_input(const char *prompt, input_handler handler, void *data);
54 static bool prompt_yesno(const char *prompt);
55
56 struct menu_item {
57 int hotkey;
58 const char *text;
59 void *data;
60 };
61
62 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected);
63
64 enum graphic {
65 GRAPHIC_ASCII = 0,
66 GRAPHIC_DEFAULT,
67 GRAPHIC_UTF8
68 };
69
70 static const struct enum_map graphic_map[] = {
71 #define GRAPHIC_(name) ENUM_MAP(#name, GRAPHIC_##name)
72 GRAPHIC_(ASCII),
73 GRAPHIC_(DEFAULT),
74 GRAPHIC_(UTF8)
75 #undef GRAPHIC_
76 };
77
78 #define DATE_INFO \
79 DATE_(NO), \
80 DATE_(DEFAULT), \
81 DATE_(LOCAL), \
82 DATE_(RELATIVE), \
83 DATE_(SHORT)
84
85 enum date {
86 #define DATE_(name) DATE_##name
87 DATE_INFO
88 #undef DATE_
89 };
90
91 static const struct enum_map date_map[] = {
92 #define DATE_(name) ENUM_MAP(#name, DATE_##name)
93 DATE_INFO
94 #undef DATE_
95 };
96
97 struct time {
98 time_t sec;
99 int tz;
100 };
101
102 static inline int timecmp(const struct time *t1, const struct time *t2)
103 {
104 return t1->sec - t2->sec;
105 }
106
107 static const char *
108 mkdate(const struct time *time, enum date date)
109 {
110 static char buf[DATE_COLS + 1];
111 static const struct enum_map reldate[] = {
112 { "second", 1, 60 * 2 },
113 { "minute", 60, 60 * 60 * 2 },
114 { "hour", 60 * 60, 60 * 60 * 24 * 2 },
115 { "day", 60 * 60 * 24, 60 * 60 * 24 * 7 * 2 },
116 { "week", 60 * 60 * 24 * 7, 60 * 60 * 24 * 7 * 5 },
117 { "month", 60 * 60 * 24 * 30, 60 * 60 * 24 * 30 * 12 },
118 };
119 struct tm tm;
120
121 if (!date || !time || !time->sec)
122 return "";
123
124 if (date == DATE_RELATIVE) {
125 struct timeval now;
126 time_t date = time->sec + time->tz;
127 time_t seconds;
128 int i;
129
130 gettimeofday(&now, NULL);
131 seconds = now.tv_sec < date ? date - now.tv_sec : now.tv_sec - date;
132 for (i = 0; i < ARRAY_SIZE(reldate); i++) {
133 if (seconds >= reldate[i].value)
134 continue;
135
136 seconds /= reldate[i].namelen;
137 if (!string_format(buf, "%ld %s%s %s",
138 seconds, reldate[i].name,
139 seconds > 1 ? "s" : "",
140 now.tv_sec >= date ? "ago" : "ahead"))
141 break;
142 return buf;
143 }
144 }
145
146 if (date == DATE_LOCAL) {
147 time_t date = time->sec + time->tz;
148 localtime_r(&date, &tm);
149 }
150 else {
151 gmtime_r(&time->sec, &tm);
152 }
153 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
154 }
155
156
157 #define AUTHOR_VALUES \
158 AUTHOR_(NO), \
159 AUTHOR_(FULL), \
160 AUTHOR_(ABBREVIATED)
161
162 enum author {
163 #define AUTHOR_(name) AUTHOR_##name
164 AUTHOR_VALUES,
165 #undef AUTHOR_
166 AUTHOR_DEFAULT = AUTHOR_FULL
167 };
168
169 static const struct enum_map author_map[] = {
170 #define AUTHOR_(name) ENUM_MAP(#name, AUTHOR_##name)
171 AUTHOR_VALUES
172 #undef AUTHOR_
173 };
174
175 static const char *
176 get_author_initials(const char *author)
177 {
178 static char initials[AUTHOR_COLS * 6 + 1];
179 size_t pos = 0;
180 const char *end = strchr(author, '\0');
181
182 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@' || (c) == '-')
183
184 memset(initials, 0, sizeof(initials));
185 while (author < end) {
186 unsigned char bytes;
187 size_t i;
188
189 while (is_initial_sep(*author))
190 author++;
191
192 bytes = utf8_char_length(author, end);
193 if (bytes < sizeof(initials) - 1 - pos) {
194 while (bytes--) {
195 initials[pos++] = *author++;
196 }
197 }
198
199 for (i = pos; author < end && !is_initial_sep(*author); author++) {
200 if (i < sizeof(initials) - 1)
201 initials[i++] = *author;
202 }
203
204 initials[i++] = 0;
205 }
206
207 return initials;
208 }
209
210
211 /*
212 * User requests
213 */
214
215 #define REQ_INFO \
216 /* XXX: Keep the view request first and in sync with views[]. */ \
217 REQ_GROUP("View switching") \
218 REQ_(VIEW_MAIN, "Show main view"), \
219 REQ_(VIEW_DIFF, "Show diff view"), \
220 REQ_(VIEW_LOG, "Show log view"), \
221 REQ_(VIEW_TREE, "Show tree view"), \
222 REQ_(VIEW_BLOB, "Show blob view"), \
223 REQ_(VIEW_BLAME, "Show blame view"), \
224 REQ_(VIEW_BRANCH, "Show branch view"), \
225 REQ_(VIEW_HELP, "Show help page"), \
226 REQ_(VIEW_PAGER, "Show pager view"), \
227 REQ_(VIEW_STATUS, "Show status view"), \
228 REQ_(VIEW_STAGE, "Show stage view"), \
229 \
230 REQ_GROUP("View manipulation") \
231 REQ_(ENTER, "Enter current line and scroll"), \
232 REQ_(NEXT, "Move to next"), \
233 REQ_(PREVIOUS, "Move to previous"), \
234 REQ_(PARENT, "Move to parent"), \
235 REQ_(VIEW_NEXT, "Move focus to next view"), \
236 REQ_(REFRESH, "Reload and refresh"), \
237 REQ_(MAXIMIZE, "Maximize the current view"), \
238 REQ_(VIEW_CLOSE, "Close the current view"), \
239 REQ_(QUIT, "Close all views and quit"), \
240 \
241 REQ_GROUP("View specific requests") \
242 REQ_(STATUS_UPDATE, "Update file status"), \
243 REQ_(STATUS_REVERT, "Revert file changes"), \
244 REQ_(STATUS_MERGE, "Merge file using external tool"), \
245 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
246 \
247 REQ_GROUP("Cursor navigation") \
248 REQ_(MOVE_UP, "Move cursor one line up"), \
249 REQ_(MOVE_DOWN, "Move cursor one line down"), \
250 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
251 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
252 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
253 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
254 \
255 REQ_GROUP("Scrolling") \
256 REQ_(SCROLL_FIRST_COL, "Scroll to the first line columns"), \
257 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
258 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
259 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
260 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
261 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
262 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
263 \
264 REQ_GROUP("Searching") \
265 REQ_(SEARCH, "Search the view"), \
266 REQ_(SEARCH_BACK, "Search backwards in the view"), \
267 REQ_(FIND_NEXT, "Find next search match"), \
268 REQ_(FIND_PREV, "Find previous search match"), \
269 \
270 REQ_GROUP("Option manipulation") \
271 REQ_(OPTIONS, "Open option menu"), \
272 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
273 REQ_(TOGGLE_DATE, "Toggle date display"), \
274 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
275 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
276 REQ_(TOGGLE_GRAPHIC, "Toggle (line) graphics mode"), \
277 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
278 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
279 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
280 \
281 REQ_GROUP("Misc") \
282 REQ_(PROMPT, "Bring up the prompt"), \
283 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
284 REQ_(SHOW_VERSION, "Show version information"), \
285 REQ_(STOP_LOADING, "Stop all loading views"), \
286 REQ_(EDIT, "Open in editor"), \
287 REQ_(NONE, "Do nothing")
288
289
290 /* User action requests. */
291 enum request {
292 #define REQ_GROUP(help)
293 #define REQ_(req, help) REQ_##req
294
295 /* Offset all requests to avoid conflicts with ncurses getch values. */
296 REQ_UNKNOWN = KEY_MAX + 1,
297 REQ_OFFSET,
298 REQ_INFO
299
300 #undef REQ_GROUP
301 #undef REQ_
302 };
303
304 struct request_info {
305 enum request request;
306 const char *name;
307 int namelen;
308 const char *help;
309 };
310
311 static const struct request_info req_info[] = {
312 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
313 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
314 REQ_INFO
315 #undef REQ_GROUP
316 #undef REQ_
317 };
318
319 static enum request
320 get_request(const char *name)
321 {
322 int namelen = strlen(name);
323 int i;
324
325 for (i = 0; i < ARRAY_SIZE(req_info); i++)
326 if (enum_equals(req_info[i], name, namelen))
327 return req_info[i].request;
328
329 return REQ_UNKNOWN;
330 }
331
332
333 /*
334 * Options
335 */
336
337 /* Option and state variables. */
338 static enum graphic opt_line_graphics = GRAPHIC_DEFAULT;
339 static enum date opt_date = DATE_DEFAULT;
340 static enum author opt_author = AUTHOR_DEFAULT;
341 static bool opt_rev_graph = TRUE;
342 static bool opt_line_number = FALSE;
343 static bool opt_show_refs = TRUE;
344 static bool opt_untracked_dirs_content = TRUE;
345 static int opt_num_interval = 5;
346 static double opt_hscroll = 0.50;
347 static double opt_scale_split_view = 2.0 / 3.0;
348 static int opt_tab_size = 8;
349 static int opt_author_cols = AUTHOR_COLS;
350 static char opt_path[SIZEOF_STR] = "";
351 static char opt_file[SIZEOF_STR] = "";
352 static char opt_ref[SIZEOF_REF] = "";
353 static char opt_head[SIZEOF_REF] = "";
354 static char opt_remote[SIZEOF_REF] = "";
355 static char opt_encoding[20] = "UTF-8";
356 static iconv_t opt_iconv_in = ICONV_NONE;
357 static iconv_t opt_iconv_out = ICONV_NONE;
358 static char opt_search[SIZEOF_STR] = "";
359 static char opt_cdup[SIZEOF_STR] = "";
360 static char opt_prefix[SIZEOF_STR] = "";
361 static char opt_git_dir[SIZEOF_STR] = "";
362 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
363 static char opt_editor[SIZEOF_STR] = "";
364 static FILE *opt_tty = NULL;
365 static const char **opt_diff_argv = NULL;
366 static const char **opt_rev_argv = NULL;
367 static const char **opt_file_argv = NULL;
368 static const char **opt_blame_argv = NULL;
369
370 #define is_initial_commit() (!get_ref_head())
371 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strcmp(rev, get_ref_head()->id)))
372
373
374 /*
375 * Line-oriented content detection.
376 */
377
378 #define LINE_INFO \
379 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
380 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
381 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
382 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
383 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
384 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
385 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
386 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
387 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
388 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
389 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
390 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
391 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
392 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
393 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
394 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
395 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
396 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
397 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
398 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
399 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
400 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
401 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
402 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
403 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
404 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
405 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
406 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
407 LINE(TESTED, " Tested-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
408 LINE(REVIEWED, " Reviewed-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
409 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
410 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
411 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
412 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
413 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
414 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
415 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
416 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
417 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
418 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
419 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
420 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
421 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
422 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
423 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
424 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
425 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
426 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
427 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
428 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
429 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
430 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
431 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
432 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
433 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
434 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
435 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
436 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
437 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
438 LINE(GRAPH_LINE_0, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
439 LINE(GRAPH_LINE_1, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
440 LINE(GRAPH_LINE_2, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
441 LINE(GRAPH_LINE_3, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
442 LINE(GRAPH_LINE_4, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
443 LINE(GRAPH_LINE_5, "", COLOR_WHITE, COLOR_DEFAULT, 0), \
444 LINE(GRAPH_LINE_6, "", COLOR_RED, COLOR_DEFAULT, 0), \
445 LINE(GRAPH_COMMIT, "", COLOR_BLUE, COLOR_DEFAULT, 0)
446
447 enum line_type {
448 #define LINE(type, line, fg, bg, attr) \
449 LINE_##type
450 LINE_INFO,
451 LINE_NONE
452 #undef LINE
453 };
454
455 struct line_info {
456 const char *name; /* Option name. */
457 int namelen; /* Size of option name. */
458 const char *line; /* The start of line to match. */
459 int linelen; /* Size of string to match. */
460 int fg, bg, attr; /* Color and text attributes for the lines. */
461 };
462
463 static struct line_info line_info[] = {
464 #define LINE(type, line, fg, bg, attr) \
465 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
466 LINE_INFO
467 #undef LINE
468 };
469
470 static enum line_type
471 get_line_type(const char *line)
472 {
473 int linelen = strlen(line);
474 enum line_type type;
475
476 for (type = 0; type < ARRAY_SIZE(line_info); type++)
477 /* Case insensitive search matches Signed-off-by lines better. */
478 if (linelen >= line_info[type].linelen &&
479 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
480 return type;
481
482 return LINE_DEFAULT;
483 }
484
485 static inline int
486 get_line_attr(enum line_type type)
487 {
488 assert(type < ARRAY_SIZE(line_info));
489 return COLOR_PAIR(type) | line_info[type].attr;
490 }
491
492 static struct line_info *
493 get_line_info(const char *name)
494 {
495 size_t namelen = strlen(name);
496 enum line_type type;
497
498 for (type = 0; type < ARRAY_SIZE(line_info); type++)
499 if (enum_equals(line_info[type], name, namelen))
500 return &line_info[type];
501
502 return NULL;
503 }
504
505 static void
506 init_colors(void)
507 {
508 int default_bg = line_info[LINE_DEFAULT].bg;
509 int default_fg = line_info[LINE_DEFAULT].fg;
510 enum line_type type;
511
512 start_color();
513
514 if (assume_default_colors(default_fg, default_bg) == ERR) {
515 default_bg = COLOR_BLACK;
516 default_fg = COLOR_WHITE;
517 }
518
519 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
520 struct line_info *info = &line_info[type];
521 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
522 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
523
524 init_pair(type, fg, bg);
525 }
526 }
527
528 struct line {
529 enum line_type type;
530
531 /* State flags */
532 unsigned int selected:1;
533 unsigned int dirty:1;
534 unsigned int cleareol:1;
535 unsigned int other:16;
536
537 void *data; /* User data */
538 };
539
540
541 /*
542 * Keys
543 */
544
545 struct keybinding {
546 int alias;
547 enum request request;
548 };
549
550 static struct keybinding default_keybindings[] = {
551 /* View switching */
552 { 'm', REQ_VIEW_MAIN },
553 { 'd', REQ_VIEW_DIFF },
554 { 'l', REQ_VIEW_LOG },
555 { 't', REQ_VIEW_TREE },
556 { 'f', REQ_VIEW_BLOB },
557 { 'B', REQ_VIEW_BLAME },
558 { 'H', REQ_VIEW_BRANCH },
559 { 'p', REQ_VIEW_PAGER },
560 { 'h', REQ_VIEW_HELP },
561 { 'S', REQ_VIEW_STATUS },
562 { 'c', REQ_VIEW_STAGE },
563
564 /* View manipulation */
565 { 'q', REQ_VIEW_CLOSE },
566 { KEY_TAB, REQ_VIEW_NEXT },
567 { KEY_RETURN, REQ_ENTER },
568 { KEY_UP, REQ_PREVIOUS },
569 { KEY_CTL('P'), REQ_PREVIOUS },
570 { KEY_DOWN, REQ_NEXT },
571 { KEY_CTL('N'), REQ_NEXT },
572 { 'R', REQ_REFRESH },
573 { KEY_F(5), REQ_REFRESH },
574 { 'O', REQ_MAXIMIZE },
575
576 /* Cursor navigation */
577 { 'k', REQ_MOVE_UP },
578 { 'j', REQ_MOVE_DOWN },
579 { KEY_HOME, REQ_MOVE_FIRST_LINE },
580 { KEY_END, REQ_MOVE_LAST_LINE },
581 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
582 { KEY_CTL('D'), REQ_MOVE_PAGE_DOWN },
583 { ' ', REQ_MOVE_PAGE_DOWN },
584 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
585 { KEY_CTL('U'), REQ_MOVE_PAGE_UP },
586 { 'b', REQ_MOVE_PAGE_UP },
587 { '-', REQ_MOVE_PAGE_UP },
588
589 /* Scrolling */
590 { '|', REQ_SCROLL_FIRST_COL },
591 { KEY_LEFT, REQ_SCROLL_LEFT },
592 { KEY_RIGHT, REQ_SCROLL_RIGHT },
593 { KEY_IC, REQ_SCROLL_LINE_UP },
594 { KEY_CTL('Y'), REQ_SCROLL_LINE_UP },
595 { KEY_DC, REQ_SCROLL_LINE_DOWN },
596 { KEY_CTL('E'), REQ_SCROLL_LINE_DOWN },
597 { 'w', REQ_SCROLL_PAGE_UP },
598 { 's', REQ_SCROLL_PAGE_DOWN },
599
600 /* Searching */
601 { '/', REQ_SEARCH },
602 { '?', REQ_SEARCH_BACK },
603 { 'n', REQ_FIND_NEXT },
604 { 'N', REQ_FIND_PREV },
605
606 /* Misc */
607 { 'Q', REQ_QUIT },
608 { 'z', REQ_STOP_LOADING },
609 { 'v', REQ_SHOW_VERSION },
610 { 'r', REQ_SCREEN_REDRAW },
611 { KEY_CTL('L'), REQ_SCREEN_REDRAW },
612 { 'o', REQ_OPTIONS },
613 { '.', REQ_TOGGLE_LINENO },
614 { 'D', REQ_TOGGLE_DATE },
615 { 'A', REQ_TOGGLE_AUTHOR },
616 { 'g', REQ_TOGGLE_REV_GRAPH },
617 { '~', REQ_TOGGLE_GRAPHIC },
618 { 'F', REQ_TOGGLE_REFS },
619 { 'I', REQ_TOGGLE_SORT_ORDER },
620 { 'i', REQ_TOGGLE_SORT_FIELD },
621 { ':', REQ_PROMPT },
622 { 'u', REQ_STATUS_UPDATE },
623 { '!', REQ_STATUS_REVERT },
624 { 'M', REQ_STATUS_MERGE },
625 { '@', REQ_STAGE_NEXT },
626 { ',', REQ_PARENT },
627 { 'e', REQ_EDIT },
628 };
629
630 #define KEYMAP_INFO \
631 KEYMAP_(GENERIC), \
632 KEYMAP_(MAIN), \
633 KEYMAP_(DIFF), \
634 KEYMAP_(LOG), \
635 KEYMAP_(TREE), \
636 KEYMAP_(BLOB), \
637 KEYMAP_(BLAME), \
638 KEYMAP_(BRANCH), \
639 KEYMAP_(PAGER), \
640 KEYMAP_(HELP), \
641 KEYMAP_(STATUS), \
642 KEYMAP_(STAGE)
643
644 enum keymap {
645 #define KEYMAP_(name) KEYMAP_##name
646 KEYMAP_INFO
647 #undef KEYMAP_
648 };
649
650 static const struct enum_map keymap_table[] = {
651 #define KEYMAP_(name) ENUM_MAP(#name, KEYMAP_##name)
652 KEYMAP_INFO
653 #undef KEYMAP_
654 };
655
656 #define set_keymap(map, name) map_enum(map, keymap_table, name)
657
658 struct keybinding_table {
659 struct keybinding *data;
660 size_t size;
661 };
662
663 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
664
665 static void
666 add_keybinding(enum keymap keymap, enum request request, int key)
667 {
668 struct keybinding_table *table = &keybindings[keymap];
669 size_t i;
670
671 for (i = 0; i < keybindings[keymap].size; i++) {
672 if (keybindings[keymap].data[i].alias == key) {
673 keybindings[keymap].data[i].request = request;
674 return;
675 }
676 }
677
678 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
679 if (!table->data)
680 die("Failed to allocate keybinding");
681 table->data[table->size].alias = key;
682 table->data[table->size++].request = request;
683
684 if (request == REQ_NONE && keymap == KEYMAP_GENERIC) {
685 int i;
686
687 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
688 if (default_keybindings[i].alias == key)
689 default_keybindings[i].request = REQ_NONE;
690 }
691 }
692
693 /* Looks for a key binding first in the given map, then in the generic map, and
694 * lastly in the default keybindings. */
695 static enum request
696 get_keybinding(enum keymap keymap, int key)
697 {
698 size_t i;
699
700 for (i = 0; i < keybindings[keymap].size; i++)
701 if (keybindings[keymap].data[i].alias == key)
702 return keybindings[keymap].data[i].request;
703
704 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
705 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
706 return keybindings[KEYMAP_GENERIC].data[i].request;
707
708 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
709 if (default_keybindings[i].alias == key)
710 return default_keybindings[i].request;
711
712 return (enum request) key;
713 }
714
715
716 struct key {
717 const char *name;
718 int value;
719 };
720
721 static const struct key key_table[] = {
722 { "Enter", KEY_RETURN },
723 { "Space", ' ' },
724 { "Backspace", KEY_BACKSPACE },
725 { "Tab", KEY_TAB },
726 { "Escape", KEY_ESC },
727 { "Left", KEY_LEFT },
728 { "Right", KEY_RIGHT },
729 { "Up", KEY_UP },
730 { "Down", KEY_DOWN },
731 { "Insert", KEY_IC },
732 { "Delete", KEY_DC },
733 { "Hash", '#' },
734 { "Home", KEY_HOME },
735 { "End", KEY_END },
736 { "PageUp", KEY_PPAGE },
737 { "PageDown", KEY_NPAGE },
738 { "F1", KEY_F(1) },
739 { "F2", KEY_F(2) },
740 { "F3", KEY_F(3) },
741 { "F4", KEY_F(4) },
742 { "F5", KEY_F(5) },
743 { "F6", KEY_F(6) },
744 { "F7", KEY_F(7) },
745 { "F8", KEY_F(8) },
746 { "F9", KEY_F(9) },
747 { "F10", KEY_F(10) },
748 { "F11", KEY_F(11) },
749 { "F12", KEY_F(12) },
750 };
751
752 static int
753 get_key_value(const char *name)
754 {
755 int i;
756
757 for (i = 0; i < ARRAY_SIZE(key_table); i++)
758 if (!strcasecmp(key_table[i].name, name))
759 return key_table[i].value;
760
761 if (strlen(name) == 2 && name[0] == '^' && isprint(*name))
762 return (int)name[1] & 0x1f;
763 if (strlen(name) == 1 && isprint(*name))
764 return (int) *name;
765 return ERR;
766 }
767
768 static const char *
769 get_key_name(int key_value)
770 {
771 static char key_char[] = "'X'\0";
772 const char *seq = NULL;
773 int key;
774
775 for (key = 0; key < ARRAY_SIZE(key_table); key++)
776 if (key_table[key].value == key_value)
777 seq = key_table[key].name;
778
779 if (seq == NULL && key_value < 0x7f) {
780 char *s = key_char + 1;
781
782 if (key_value >= 0x20) {
783 *s++ = key_value;
784 } else {
785 *s++ = '^';
786 *s++ = 0x40 | (key_value & 0x1f);
787 }
788 *s++ = '\'';
789 *s++ = '\0';
790 seq = key_char;
791 }
792
793 return seq ? seq : "(no key)";
794 }
795
796 static bool
797 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
798 {
799 const char *sep = *pos > 0 ? ", " : "";
800 const char *keyname = get_key_name(keybinding->alias);
801
802 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
803 }
804
805 static bool
806 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
807 enum keymap keymap, bool all)
808 {
809 int i;
810
811 for (i = 0; i < keybindings[keymap].size; i++) {
812 if (keybindings[keymap].data[i].request == request) {
813 if (!append_key(buf, pos, &keybindings[keymap].data[i]))
814 return FALSE;
815 if (!all)
816 break;
817 }
818 }
819
820 return TRUE;
821 }
822
823 #define get_key(keymap, request) get_keys(keymap, request, FALSE)
824
825 static const char *
826 get_keys(enum keymap keymap, enum request request, bool all)
827 {
828 static char buf[BUFSIZ];
829 size_t pos = 0;
830 int i;
831
832 buf[pos] = 0;
833
834 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
835 return "Too many keybindings!";
836 if (pos > 0 && !all)
837 return buf;
838
839 if (keymap != KEYMAP_GENERIC) {
840 /* Only the generic keymap includes the default keybindings when
841 * listing all keys. */
842 if (all)
843 return buf;
844
845 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
846 return "Too many keybindings!";
847 if (pos)
848 return buf;
849 }
850
851 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
852 if (default_keybindings[i].request == request) {
853 if (!append_key(buf, &pos, &default_keybindings[i]))
854 return "Too many keybindings!";
855 if (!all)
856 return buf;
857 }
858 }
859
860 return buf;
861 }
862
863 struct run_request {
864 enum keymap keymap;
865 int key;
866 const char **argv;
867 };
868
869 static struct run_request *run_request;
870 static size_t run_requests;
871
872 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
873
874 static enum request
875 add_run_request(enum keymap keymap, int key, const char **argv)
876 {
877 struct run_request *req;
878
879 if (!realloc_run_requests(&run_request, run_requests, 1))
880 return REQ_NONE;
881
882 req = &run_request[run_requests];
883 req->keymap = keymap;
884 req->key = key;
885 req->argv = NULL;
886
887 if (!argv_copy(&req->argv, argv))
888 return REQ_NONE;
889
890 return REQ_NONE + ++run_requests;
891 }
892
893 static struct run_request *
894 get_run_request(enum request request)
895 {
896 if (request <= REQ_NONE)
897 return NULL;
898 return &run_request[request - REQ_NONE - 1];
899 }
900
901 static void
902 add_builtin_run_requests(void)
903 {
904 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
905 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
906 const char *commit[] = { "git", "commit", NULL };
907 const char *gc[] = { "git", "gc", NULL };
908 struct run_request reqs[] = {
909 { KEYMAP_MAIN, 'C', cherry_pick },
910 { KEYMAP_STATUS, 'C', commit },
911 { KEYMAP_BRANCH, 'C', checkout },
912 { KEYMAP_GENERIC, 'G', gc },
913 };
914 int i;
915
916 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
917 enum request req = get_keybinding(reqs[i].keymap, reqs[i].key);
918
919 if (req != reqs[i].key)
920 continue;
921 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argv);
922 if (req != REQ_NONE)
923 add_keybinding(reqs[i].keymap, req, reqs[i].key);
924 }
925 }
926
927 /*
928 * User config file handling.
929 */
930
931 #define OPT_ERR_INFO \
932 OPT_ERR_(INTEGER_VALUE_OUT_OF_BOUND, "Integer value out of bound"), \
933 OPT_ERR_(INVALID_STEP_VALUE, "Invalid step value"), \
934 OPT_ERR_(NO_OPTION_VALUE, "No option value"), \
935 OPT_ERR_(NO_VALUE_ASSIGNED, "No value assigned"), \
936 OPT_ERR_(OBSOLETE_REQUEST_NAME, "Obsolete request name"), \
937 OPT_ERR_(OUT_OF_MEMORY, "Out of memory"), \
938 OPT_ERR_(TOO_MANY_OPTION_ARGUMENTS, "Too many option arguments"), \
939 OPT_ERR_(UNKNOWN_ATTRIBUTE, "Unknown attribute"), \
940 OPT_ERR_(UNKNOWN_COLOR, "Unknown color"), \
941 OPT_ERR_(UNKNOWN_COLOR_NAME, "Unknown color name"), \
942 OPT_ERR_(UNKNOWN_KEY, "Unknown key"), \
943 OPT_ERR_(UNKNOWN_KEY_MAP, "Unknown key map"), \
944 OPT_ERR_(UNKNOWN_OPTION_COMMAND, "Unknown option command"), \
945 OPT_ERR_(UNKNOWN_REQUEST_NAME, "Unknown request name"), \
946 OPT_ERR_(UNKNOWN_VARIABLE_NAME, "Unknown variable name"), \
947 OPT_ERR_(UNMATCHED_QUOTATION, "Unmatched quotation"), \
948 OPT_ERR_(WRONG_NUMBER_OF_ARGUMENTS, "Wrong number of arguments"),
949
950 enum option_code {
951 #define OPT_ERR_(name, msg) OPT_ERR_ ## name
952 OPT_ERR_INFO
953 #undef OPT_ERR_
954 OPT_OK
955 };
956
957 static const char *option_errors[] = {
958 #define OPT_ERR_(name, msg) msg
959 OPT_ERR_INFO
960 #undef OPT_ERR_
961 };
962
963 static const struct enum_map color_map[] = {
964 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
965 COLOR_MAP(DEFAULT),
966 COLOR_MAP(BLACK),
967 COLOR_MAP(BLUE),
968 COLOR_MAP(CYAN),
969 COLOR_MAP(GREEN),
970 COLOR_MAP(MAGENTA),
971 COLOR_MAP(RED),
972 COLOR_MAP(WHITE),
973 COLOR_MAP(YELLOW),
974 };
975
976 static const struct enum_map attr_map[] = {
977 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
978 ATTR_MAP(NORMAL),
979 ATTR_MAP(BLINK),
980 ATTR_MAP(BOLD),
981 ATTR_MAP(DIM),
982 ATTR_MAP(REVERSE),
983 ATTR_MAP(STANDOUT),
984 ATTR_MAP(UNDERLINE),
985 };
986
987 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
988
989 static enum option_code
990 parse_step(double *opt, const char *arg)
991 {
992 *opt = atoi(arg);
993 if (!strchr(arg, '%'))
994 return OPT_OK;
995
996 /* "Shift down" so 100% and 1 does not conflict. */
997 *opt = (*opt - 1) / 100;
998 if (*opt >= 1.0) {
999 *opt = 0.99;
1000 return OPT_ERR_INVALID_STEP_VALUE;
1001 }
1002 if (*opt < 0.0) {
1003 *opt = 1;
1004 return OPT_ERR_INVALID_STEP_VALUE;
1005 }
1006 return OPT_OK;
1007 }
1008
1009 static enum option_code
1010 parse_int(int *opt, const char *arg, int min, int max)
1011 {
1012 int value = atoi(arg);
1013
1014 if (min <= value && value <= max) {
1015 *opt = value;
1016 return OPT_OK;
1017 }
1018
1019 return OPT_ERR_INTEGER_VALUE_OUT_OF_BOUND;
1020 }
1021
1022 static bool
1023 set_color(int *color, const char *name)
1024 {
1025 if (map_enum(color, color_map, name))
1026 return TRUE;
1027 if (!prefixcmp(name, "color"))
1028 return parse_int(color, name + 5, 0, 255) == OK;
1029 return FALSE;
1030 }
1031
1032 /* Wants: object fgcolor bgcolor [attribute] */
1033 static enum option_code
1034 option_color_command(int argc, const char *argv[])
1035 {
1036 struct line_info *info;
1037
1038 if (argc < 3)
1039 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1040
1041 info = get_line_info(argv[0]);
1042 if (!info) {
1043 static const struct enum_map obsolete[] = {
1044 ENUM_MAP("main-delim", LINE_DELIMITER),
1045 ENUM_MAP("main-date", LINE_DATE),
1046 ENUM_MAP("main-author", LINE_AUTHOR),
1047 };
1048 int index;
1049
1050 if (!map_enum(&index, obsolete, argv[0]))
1051 return OPT_ERR_UNKNOWN_COLOR_NAME;
1052 info = &line_info[index];
1053 }
1054
1055 if (!set_color(&info->fg, argv[1]) ||
1056 !set_color(&info->bg, argv[2]))
1057 return OPT_ERR_UNKNOWN_COLOR;
1058
1059 info->attr = 0;
1060 while (argc-- > 3) {
1061 int attr;
1062
1063 if (!set_attribute(&attr, argv[argc]))
1064 return OPT_ERR_UNKNOWN_ATTRIBUTE;
1065 info->attr |= attr;
1066 }
1067
1068 return OPT_OK;
1069 }
1070
1071 static enum option_code
1072 parse_bool(bool *opt, const char *arg)
1073 {
1074 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1075 ? TRUE : FALSE;
1076 return OPT_OK;
1077 }
1078
1079 static enum option_code
1080 parse_enum_do(unsigned int *opt, const char *arg,
1081 const struct enum_map *map, size_t map_size)
1082 {
1083 bool is_true;
1084
1085 assert(map_size > 1);
1086
1087 if (map_enum_do(map, map_size, (int *) opt, arg))
1088 return OPT_OK;
1089
1090 parse_bool(&is_true, arg);
1091 *opt = is_true ? map[1].value : map[0].value;
1092 return OPT_OK;
1093 }
1094
1095 #define parse_enum(opt, arg, map) \
1096 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1097
1098 static enum option_code
1099 parse_string(char *opt, const char *arg, size_t optsize)
1100 {
1101 int arglen = strlen(arg);
1102
1103 switch (arg[0]) {
1104 case '\"':
1105 case '\'':
1106 if (arglen == 1 || arg[arglen - 1] != arg[0])
1107 return OPT_ERR_UNMATCHED_QUOTATION;
1108 arg += 1; arglen -= 2;
1109 default:
1110 string_ncopy_do(opt, optsize, arg, arglen);
1111 return OPT_OK;
1112 }
1113 }
1114
1115 static enum option_code
1116 parse_args(const char ***args, const char *argv[])
1117 {
1118 if (*args == NULL && !argv_copy(args, argv))
1119 return OPT_ERR_OUT_OF_MEMORY;
1120 return OPT_OK;
1121 }
1122
1123 /* Wants: name = value */
1124 static enum option_code
1125 option_set_command(int argc, const char *argv[])
1126 {
1127 if (argc < 3)
1128 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1129
1130 if (strcmp(argv[1], "="))
1131 return OPT_ERR_NO_VALUE_ASSIGNED;
1132
1133 if (!strcmp(argv[0], "blame-options"))
1134 return parse_args(&opt_blame_argv, argv + 2);
1135
1136 if (argc != 3)
1137 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1138
1139 if (!strcmp(argv[0], "show-author"))
1140 return parse_enum(&opt_author, argv[2], author_map);
1141
1142 if (!strcmp(argv[0], "show-date"))
1143 return parse_enum(&opt_date, argv[2], date_map);
1144
1145 if (!strcmp(argv[0], "show-rev-graph"))
1146 return parse_bool(&opt_rev_graph, argv[2]);
1147
1148 if (!strcmp(argv[0], "show-refs"))
1149 return parse_bool(&opt_show_refs, argv[2]);
1150
1151 if (!strcmp(argv[0], "show-line-numbers"))
1152 return parse_bool(&opt_line_number, argv[2]);
1153
1154 if (!strcmp(argv[0], "line-graphics"))
1155 return parse_enum(&opt_line_graphics, argv[2], graphic_map);
1156
1157 if (!strcmp(argv[0], "line-number-interval"))
1158 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1159
1160 if (!strcmp(argv[0], "author-width"))
1161 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1162
1163 if (!strcmp(argv[0], "horizontal-scroll"))
1164 return parse_step(&opt_hscroll, argv[2]);
1165
1166 if (!strcmp(argv[0], "split-view-height"))
1167 return parse_step(&opt_scale_split_view, argv[2]);
1168
1169 if (!strcmp(argv[0], "tab-size"))
1170 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1171
1172 if (!strcmp(argv[0], "commit-encoding"))
1173 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1174
1175 if (!strcmp(argv[0], "status-untracked-dirs"))
1176 return parse_bool(&opt_untracked_dirs_content, argv[2]);
1177
1178 return OPT_ERR_UNKNOWN_VARIABLE_NAME;
1179 }
1180
1181 /* Wants: mode request key */
1182 static enum option_code
1183 option_bind_command(int argc, const char *argv[])
1184 {
1185 enum request request;
1186 int keymap = -1;
1187 int key;
1188
1189 if (argc < 3)
1190 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1191
1192 if (!set_keymap(&keymap, argv[0]))
1193 return OPT_ERR_UNKNOWN_KEY_MAP;
1194
1195 key = get_key_value(argv[1]);
1196 if (key == ERR)
1197 return OPT_ERR_UNKNOWN_KEY;
1198
1199 request = get_request(argv[2]);
1200 if (request == REQ_UNKNOWN) {
1201 static const struct enum_map obsolete[] = {
1202 ENUM_MAP("cherry-pick", REQ_NONE),
1203 ENUM_MAP("screen-resize", REQ_NONE),
1204 ENUM_MAP("tree-parent", REQ_PARENT),
1205 };
1206 int alias;
1207
1208 if (map_enum(&alias, obsolete, argv[2])) {
1209 if (alias != REQ_NONE)
1210 add_keybinding(keymap, alias, key);
1211 return OPT_ERR_OBSOLETE_REQUEST_NAME;
1212 }
1213 }
1214 if (request == REQ_UNKNOWN && *argv[2]++ == '!')
1215 request = add_run_request(keymap, key, argv + 2);
1216 if (request == REQ_UNKNOWN)
1217 return OPT_ERR_UNKNOWN_REQUEST_NAME;
1218
1219 add_keybinding(keymap, request, key);
1220
1221 return OPT_OK;
1222 }
1223
1224 static enum option_code
1225 set_option(const char *opt, char *value)
1226 {
1227 const char *argv[SIZEOF_ARG];
1228 int argc = 0;
1229
1230 if (!argv_from_string(argv, &argc, value))
1231 return OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
1232
1233 if (!strcmp(opt, "color"))
1234 return option_color_command(argc, argv);
1235
1236 if (!strcmp(opt, "set"))
1237 return option_set_command(argc, argv);
1238
1239 if (!strcmp(opt, "bind"))
1240 return option_bind_command(argc, argv);
1241
1242 return OPT_ERR_UNKNOWN_OPTION_COMMAND;
1243 }
1244
1245 struct config_state {
1246 int lineno;
1247 bool errors;
1248 };
1249
1250 static int
1251 read_option(char *opt, size_t optlen, char *value, size_t valuelen, void *data)
1252 {
1253 struct config_state *config = data;
1254 enum option_code status = OPT_ERR_NO_OPTION_VALUE;
1255
1256 config->lineno++;
1257
1258 /* Check for comment markers, since read_properties() will
1259 * only ensure opt and value are split at first " \t". */
1260 optlen = strcspn(opt, "#");
1261 if (optlen == 0)
1262 return OK;
1263
1264 if (opt[optlen] == 0) {
1265 /* Look for comment endings in the value. */
1266 size_t len = strcspn(value, "#");
1267
1268 if (len < valuelen) {
1269 valuelen = len;
1270 value[valuelen] = 0;
1271 }
1272
1273 status = set_option(opt, value);
1274 }
1275
1276 if (status != OPT_OK) {
1277 warn("Error on line %d, near '%.*s': %s",
1278 config->lineno, (int) optlen, opt, option_errors[status]);
1279 config->errors = TRUE;
1280 }
1281
1282 /* Always keep going if errors are encountered. */
1283 return OK;
1284 }
1285
1286 static void
1287 load_option_file(const char *path)
1288 {
1289 struct config_state config = { 0, FALSE };
1290 struct io io;
1291
1292 /* It's OK that the file doesn't exist. */
1293 if (!io_open(&io, "%s", path))
1294 return;
1295
1296 if (io_load(&io, " \t", read_option, &config) == ERR ||
1297 config.errors == TRUE)
1298 warn("Errors while loading %s.", path);
1299 }
1300
1301 static int
1302 load_options(void)
1303 {
1304 const char *home = getenv("HOME");
1305 const char *tigrc_user = getenv("TIGRC_USER");
1306 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1307 const char *tig_diff_opts = getenv("TIG_DIFF_OPTS");
1308 char buf[SIZEOF_STR];
1309
1310 if (!tigrc_system)
1311 tigrc_system = SYSCONFDIR "/tigrc";
1312 load_option_file(tigrc_system);
1313
1314 if (!tigrc_user) {
1315 if (!home || !string_format(buf, "%s/.tigrc", home))
1316 return ERR;
1317 tigrc_user = buf;
1318 }
1319 load_option_file(tigrc_user);
1320
1321 /* Add _after_ loading config files to avoid adding run requests
1322 * that conflict with keybindings. */
1323 add_builtin_run_requests();
1324
1325 if (!opt_diff_argv && tig_diff_opts && *tig_diff_opts) {
1326 static const char *diff_opts[SIZEOF_ARG] = { NULL };
1327 int argc = 0;
1328
1329 if (!string_format(buf, "%s", tig_diff_opts) ||
1330 !argv_from_string(diff_opts, &argc, buf))
1331 die("TIG_DIFF_OPTS contains too many arguments");
1332 else if (!argv_copy(&opt_diff_argv, diff_opts))
1333 die("Failed to format TIG_DIFF_OPTS arguments");
1334 }
1335
1336 return OK;
1337 }
1338
1339
1340 /*
1341 * The viewer
1342 */
1343
1344 struct view;
1345 struct view_ops;
1346
1347 /* The display array of active views and the index of the current view. */
1348 static struct view *display[2];
1349 static WINDOW *display_win[2];
1350 static WINDOW *display_title[2];
1351 static unsigned int current_view;
1352
1353 #define foreach_displayed_view(view, i) \
1354 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1355
1356 #define displayed_views() (display[1] != NULL ? 2 : 1)
1357
1358 /* Current head and commit ID */
1359 static char ref_blob[SIZEOF_REF] = "";
1360 static char ref_commit[SIZEOF_REF] = "HEAD";
1361 static char ref_head[SIZEOF_REF] = "HEAD";
1362 static char ref_branch[SIZEOF_REF] = "";
1363
1364 enum view_type {
1365 VIEW_MAIN,
1366 VIEW_DIFF,
1367 VIEW_LOG,
1368 VIEW_TREE,
1369 VIEW_BLOB,
1370 VIEW_BLAME,
1371 VIEW_BRANCH,
1372 VIEW_HELP,
1373 VIEW_PAGER,
1374 VIEW_STATUS,
1375 VIEW_STAGE,
1376 };
1377
1378 struct view {
1379 enum view_type type; /* View type */
1380 const char *name; /* View name */
1381 const char *id; /* Points to either of ref_{head,commit,blob} */
1382
1383 struct view_ops *ops; /* View operations */
1384
1385 enum keymap keymap; /* What keymap does this view have */
1386 bool git_dir; /* Whether the view requires a git directory. */
1387
1388 char ref[SIZEOF_REF]; /* Hovered commit reference */
1389 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1390
1391 int height, width; /* The width and height of the main window */
1392 WINDOW *win; /* The main window */
1393
1394 /* Navigation */
1395 unsigned long offset; /* Offset of the window top */
1396 unsigned long yoffset; /* Offset from the window side. */
1397 unsigned long lineno; /* Current line number */
1398 unsigned long p_offset; /* Previous offset of the window top */
1399 unsigned long p_yoffset;/* Previous offset from the window side */
1400 unsigned long p_lineno; /* Previous current line number */
1401 bool p_restore; /* Should the previous position be restored. */
1402
1403 /* Searching */
1404 char grep[SIZEOF_STR]; /* Search string */
1405 regex_t *regex; /* Pre-compiled regexp */
1406
1407 /* If non-NULL, points to the view that opened this view. If this view
1408 * is closed tig will switch back to the parent view. */
1409 struct view *parent;
1410 struct view *prev;
1411
1412 /* Buffering */
1413 size_t lines; /* Total number of lines */
1414 struct line *line; /* Line index */
1415 unsigned int digits; /* Number of digits in the lines member. */
1416
1417 /* Drawing */
1418 struct line *curline; /* Line currently being drawn. */
1419 enum line_type curtype; /* Attribute currently used for drawing. */
1420 unsigned long col; /* Column when drawing. */
1421 bool has_scrolled; /* View was scrolled. */
1422
1423 /* Loading */
1424 const char **argv; /* Shell command arguments. */
1425 const char *dir; /* Directory from which to execute. */
1426 struct io io;
1427 struct io *pipe;
1428 time_t start_time;
1429 time_t update_secs;
1430 };
1431
1432 enum open_flags {
1433 OPEN_DEFAULT = 0, /* Use default view switching. */
1434 OPEN_SPLIT = 1, /* Split current view. */
1435 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1436 OPEN_REFRESH = 16, /* Refresh view using previous command. */
1437 OPEN_PREPARED = 32, /* Open already prepared command. */
1438 };
1439
1440 struct view_ops {
1441 /* What type of content being displayed. Used in the title bar. */
1442 const char *type;
1443 /* Default command arguments. */
1444 const char **argv;
1445 /* Open and reads in all view content. */
1446 bool (*open)(struct view *view, enum open_flags flags);
1447 /* Read one line; updates view->line. */
1448 bool (*read)(struct view *view, char *data);
1449 /* Draw one line; @lineno must be < view->height. */
1450 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1451 /* Depending on view handle a special requests. */
1452 enum request (*request)(struct view *view, enum request request, struct line *line);
1453 /* Search for regexp in a line. */
1454 bool (*grep)(struct view *view, struct line *line);
1455 /* Select line */
1456 void (*select)(struct view *view, struct line *line);
1457 /* Prepare view for loading */
1458 bool (*prepare)(struct view *view);
1459 };
1460
1461 static struct view_ops blame_ops;
1462 static struct view_ops blob_ops;
1463 static struct view_ops diff_ops;
1464 static struct view_ops help_ops;
1465 static struct view_ops log_ops;
1466 static struct view_ops main_ops;
1467 static struct view_ops pager_ops;
1468 static struct view_ops stage_ops;
1469 static struct view_ops status_ops;
1470 static struct view_ops tree_ops;
1471 static struct view_ops branch_ops;
1472
1473 #define VIEW_STR(type, name, ref, ops, map, git) \
1474 { type, name, ref, ops, map, git }
1475
1476 #define VIEW_(id, name, ops, git, ref) \
1477 VIEW_STR(VIEW_##id, name, ref, ops, KEYMAP_##id, git)
1478
1479 static struct view views[] = {
1480 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1481 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1482 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1483 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1484 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1485 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1486 VIEW_(BRANCH, "branch", &branch_ops, TRUE, ref_head),
1487 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1488 VIEW_(PAGER, "pager", &pager_ops, FALSE, ""),
1489 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1490 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1491 };
1492
1493 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1494
1495 #define foreach_view(view, i) \
1496 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1497
1498 #define view_is_displayed(view) \
1499 (view == display[0] || view == display[1])
1500
1501 static enum request
1502 view_request(struct view *view, enum request request)
1503 {
1504 if (!view || !view->lines)
1505 return request;
1506 return view->ops->request(view, request, &view->line[view->lineno]);
1507 }
1508
1509
1510 /*
1511 * View drawing.
1512 */
1513
1514 static inline void
1515 set_view_attr(struct view *view, enum line_type type)
1516 {
1517 if (!view->curline->selected && view->curtype != type) {
1518 (void) wattrset(view->win, get_line_attr(type));
1519 wchgat(view->win, -1, 0, type, NULL);
1520 view->curtype = type;
1521 }
1522 }
1523
1524 #define VIEW_MAX_LEN(view) ((view)->width + (view)->yoffset - (view)->col)
1525
1526 static int
1527 draw_chars(struct view *view, enum line_type type, const char *string,
1528 int max_len, bool use_tilde)
1529 {
1530 static char out_buffer[BUFSIZ * 2];
1531 int len = 0;
1532 int col = 0;
1533 int trimmed = FALSE;
1534 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1535
1536 if (max_len <= 0)
1537 return 0;
1538
1539 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1540
1541 set_view_attr(view, type);
1542 if (len > 0) {
1543 if (opt_iconv_out != ICONV_NONE) {
1544 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
1545 size_t inlen = len + 1;
1546
1547 char *outbuf = out_buffer;
1548 size_t outlen = sizeof(out_buffer);
1549
1550 size_t ret;
1551
1552 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1553 if (ret != (size_t) -1) {
1554 string = out_buffer;
1555 len = sizeof(out_buffer) - outlen;
1556 }
1557 }
1558
1559 waddnstr(view->win, string, len);
1560
1561 if (trimmed && use_tilde) {
1562 set_view_attr(view, LINE_DELIMITER);
1563 waddch(view->win, '~');
1564 col++;
1565 }
1566 }
1567
1568 return col;
1569 }
1570
1571 static int
1572 draw_space(struct view *view, enum line_type type, int max, int spaces)
1573 {
1574 static char space[] = " ";
1575 int col = 0;
1576
1577 spaces = MIN(max, spaces);
1578
1579 while (spaces > 0) {
1580 int len = MIN(spaces, sizeof(space) - 1);
1581
1582 col += draw_chars(view, type, space, len, FALSE);
1583 spaces -= len;
1584 }
1585
1586 return col;
1587 }
1588
1589 static bool
1590 draw_text(struct view *view, enum line_type type, const char *string)
1591 {
1592 char text[SIZEOF_STR];
1593
1594 do {
1595 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1596
1597 view->col += draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE);
1598 string += pos;
1599 } while (*string && VIEW_MAX_LEN(view) > 0);
1600
1601 return VIEW_MAX_LEN(view) <= 0;
1602 }
1603
1604 static bool
1605 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
1606 {
1607 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1608 int max = VIEW_MAX_LEN(view);
1609 int i;
1610
1611 if (max < size)
1612 size = max;
1613
1614 set_view_attr(view, type);
1615 /* Using waddch() instead of waddnstr() ensures that
1616 * they'll be rendered correctly for the cursor line. */
1617 for (i = skip; i < size; i++)
1618 waddch(view->win, graphic[i]);
1619
1620 view->col += size;
1621 if (separator) {
1622 if (size < max && skip <= size)
1623 waddch(view->win, ' ');
1624 view->col++;
1625 }
1626
1627 return VIEW_MAX_LEN(view) <= 0;
1628 }
1629
1630 static bool
1631 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1632 {
1633 int max = MIN(VIEW_MAX_LEN(view), len);
1634 int col;
1635
1636 if (text)
1637 col = draw_chars(view, type, text, max - 1, trim);
1638 else
1639 col = draw_space(view, type, max - 1, max - 1);
1640
1641 view->col += col;
1642 view->col += draw_space(view, LINE_DEFAULT, max - col, max - col);
1643 return VIEW_MAX_LEN(view) <= 0;
1644 }
1645
1646 static bool
1647 draw_date(struct view *view, struct time *time)
1648 {
1649 const char *date = mkdate(time, opt_date);
1650 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
1651
1652 return draw_field(view, LINE_DATE, date, cols, FALSE);
1653 }
1654
1655 static bool
1656 draw_author(struct view *view, const char *author)
1657 {
1658 bool trim = opt_author_cols == 0 || opt_author_cols > 5;
1659 bool abbreviate = opt_author == AUTHOR_ABBREVIATED || !trim;
1660
1661 if (abbreviate && author)
1662 author = get_author_initials(author);
1663
1664 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
1665 }
1666
1667 static bool
1668 draw_mode(struct view *view, mode_t mode)
1669 {
1670 const char *str;
1671
1672 if (S_ISDIR(mode))
1673 str = "drwxr-xr-x";
1674 else if (S_ISLNK(mode))
1675 str = "lrwxrwxrwx";
1676 else if (S_ISGITLINK(mode))
1677 str = "m---------";
1678 else if (S_ISREG(mode) && mode & S_IXUSR)
1679 str = "-rwxr-xr-x";
1680 else if (S_ISREG(mode))
1681 str = "-rw-r--r--";
1682 else
1683 str = "----------";
1684
1685 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
1686 }
1687
1688 static bool
1689 draw_lineno(struct view *view, unsigned int lineno)
1690 {
1691 char number[10];
1692 int digits3 = view->digits < 3 ? 3 : view->digits;
1693 int max = MIN(VIEW_MAX_LEN(view), digits3);
1694 char *text = NULL;
1695 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
1696
1697 lineno += view->offset + 1;
1698 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1699 static char fmt[] = "%1ld";
1700
1701 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
1702 if (string_format(number, fmt, lineno))
1703 text = number;
1704 }
1705 if (text)
1706 view->col += draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
1707 else
1708 view->col += draw_space(view, LINE_LINE_NUMBER, max, digits3);
1709 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
1710 }
1711
1712 static bool
1713 draw_view_line(struct view *view, unsigned int lineno)
1714 {
1715 struct line *line;
1716 bool selected = (view->offset + lineno == view->lineno);
1717
1718 assert(view_is_displayed(view));
1719
1720 if (view->offset + lineno >= view->lines)
1721 return FALSE;
1722
1723 line = &view->line[view->offset + lineno];
1724
1725 wmove(view->win, lineno, 0);
1726 if (line->cleareol)
1727 wclrtoeol(view->win);
1728 view->col = 0;
1729 view->curline = line;
1730 view->curtype = LINE_NONE;
1731 line->selected = FALSE;
1732 line->dirty = line->cleareol = 0;
1733
1734 if (selected) {
1735 set_view_attr(view, LINE_CURSOR);
1736 line->selected = TRUE;
1737 view->ops->select(view, line);
1738 }
1739
1740 return view->ops->draw(view, line, lineno);
1741 }
1742
1743 static void
1744 redraw_view_dirty(struct view *view)
1745 {
1746 bool dirty = FALSE;
1747 int lineno;
1748
1749 for (lineno = 0; lineno < view->height; lineno++) {
1750 if (view->offset + lineno >= view->lines)
1751 break;
1752 if (!view->line[view->offset + lineno].dirty)
1753 continue;
1754 dirty = TRUE;
1755 if (!draw_view_line(view, lineno))
1756 break;
1757 }
1758
1759 if (!dirty)
1760 return;
1761 wnoutrefresh(view->win);
1762 }
1763
1764 static void
1765 redraw_view_from(struct view *view, int lineno)
1766 {
1767 assert(0 <= lineno && lineno < view->height);
1768
1769 for (; lineno < view->height; lineno++) {
1770 if (!draw_view_line(view, lineno))
1771 break;
1772 }
1773
1774 wnoutrefresh(view->win);
1775 }
1776
1777 static void
1778 redraw_view(struct view *view)
1779 {
1780 werase(view->win);
1781 redraw_view_from(view, 0);
1782 }
1783
1784
1785 static void
1786 update_view_title(struct view *view)
1787 {
1788 char buf[SIZEOF_STR];
1789 char state[SIZEOF_STR];
1790 size_t bufpos = 0, statelen = 0;
1791 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
1792
1793 assert(view_is_displayed(view));
1794
1795 if (view->type != VIEW_STATUS && view->lines) {
1796 unsigned int view_lines = view->offset + view->height;
1797 unsigned int lines = view->lines
1798 ? MIN(view_lines, view->lines) * 100 / view->lines
1799 : 0;
1800
1801 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
1802 view->ops->type,
1803 view->lineno + 1,
1804 view->lines,
1805 lines);
1806
1807 }
1808
1809 if (view->pipe) {
1810 time_t secs = time(NULL) - view->start_time;
1811
1812 /* Three git seconds are a long time ... */
1813 if (secs > 2)
1814 string_format_from(state, &statelen, " loading %lds", secs);
1815 }
1816
1817 string_format_from(buf, &bufpos, "[%s]", view->name);
1818 if (*view->ref && bufpos < view->width) {
1819 size_t refsize = strlen(view->ref);
1820 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1821
1822 if (minsize < view->width)
1823 refsize = view->width - minsize + 7;
1824 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1825 }
1826
1827 if (statelen && bufpos < view->width) {
1828 string_format_from(buf, &bufpos, "%s", state);
1829 }
1830
1831 if (view == display[current_view])
1832 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
1833 else
1834 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
1835
1836 mvwaddnstr(window, 0, 0, buf, bufpos);
1837 wclrtoeol(window);
1838 wnoutrefresh(window);
1839 }
1840
1841 static int
1842 apply_step(double step, int value)
1843 {
1844 if (step >= 1)
1845 return (int) step;
1846 value *= step + 0.01;
1847 return value ? value : 1;
1848 }
1849
1850 static void
1851 resize_display(void)
1852 {
1853 int offset, i;
1854 struct view *base = display[0];
1855 struct view *view = display[1] ? display[1] : display[0];
1856
1857 /* Setup window dimensions */
1858
1859 getmaxyx(stdscr, base->height, base->width);
1860
1861 /* Make room for the status window. */
1862 base->height -= 1;
1863
1864 if (view != base) {
1865 /* Horizontal split. */
1866 view->width = base->width;
1867 view->height = apply_step(opt_scale_split_view, base->height);
1868 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
1869 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
1870 base->height -= view->height;
1871
1872 /* Make room for the title bar. */
1873 view->height -= 1;
1874 }
1875
1876 /* Make room for the title bar. */
1877 base->height -= 1;
1878
1879 offset = 0;
1880
1881 foreach_displayed_view (view, i) {
1882 if (!display_win[i]) {
1883 display_win[i] = newwin(view->height, view->width, offset, 0);
1884 if (!display_win[i])
1885 die("Failed to create %s view", view->name);
1886
1887 scrollok(display_win[i], FALSE);
1888
1889 display_title[i] = newwin(1, view->width, offset + view->height, 0);
1890 if (!display_title[i])
1891 die("Failed to create title window");
1892
1893 } else {
1894 wresize(display_win[i], view->height, view->width);
1895 mvwin(display_win[i], offset, 0);
1896 mvwin(display_title[i], offset + view->height, 0);
1897 }
1898
1899 view->win = display_win[i];
1900
1901 offset += view->height + 1;
1902 }
1903 }
1904
1905 static void
1906 redraw_display(bool clear)
1907 {
1908 struct view *view;
1909 int i;
1910
1911 foreach_displayed_view (view, i) {
1912 if (clear)
1913 wclear(view->win);
1914 redraw_view(view);
1915 update_view_title(view);
1916 }
1917 }
1918
1919
1920 /*
1921 * Option management
1922 */
1923
1924 #define TOGGLE_MENU \
1925 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
1926 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
1927 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
1928 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
1929 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
1930 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
1931
1932 static void
1933 toggle_option(enum request request)
1934 {
1935 const struct {
1936 enum request request;
1937 const struct enum_map *map;
1938 size_t map_size;
1939 } data[] = {
1940 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
1941 TOGGLE_MENU
1942 #undef TOGGLE_
1943 };
1944 const struct menu_item menu[] = {
1945 #define TOGGLE_(id, key, help, value, map) { key, help, value },
1946 TOGGLE_MENU
1947 #undef TOGGLE_
1948 { 0 }
1949 };
1950 int i = 0;
1951
1952 if (request == REQ_OPTIONS) {
1953 if (!prompt_menu("Toggle option", menu, &i))
1954 return;
1955 } else {
1956 while (i < ARRAY_SIZE(data) && data[i].request != request)
1957 i++;
1958 if (i >= ARRAY_SIZE(data))
1959 die("Invalid request (%d)", request);
1960 }
1961
1962 if (data[i].map != NULL) {
1963 unsigned int *opt = menu[i].data;
1964
1965 *opt = (*opt + 1) % data[i].map_size;
1966 redraw_display(FALSE);
1967 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
1968
1969 } else {
1970 bool *option = menu[i].data;
1971
1972 *option = !*option;
1973 redraw_display(FALSE);
1974 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
1975 }
1976 }
1977
1978 static void
1979 maximize_view(struct view *view)
1980 {
1981 memset(display, 0, sizeof(display));
1982 current_view = 0;
1983 display[current_view] = view;
1984 resize_display();
1985 redraw_display(FALSE);
1986 report("");
1987 }
1988
1989
1990 /*
1991 * Navigation
1992 */
1993
1994 static bool
1995 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
1996 {
1997 if (lineno >= view->lines)
1998 lineno = view->lines > 0 ? view->lines - 1 : 0;
1999
2000 if (offset > lineno || offset + view->height <= lineno) {
2001 unsigned long half = view->height / 2;
2002
2003 if (lineno > half)
2004 offset = lineno - half;
2005 else
2006 offset = 0;
2007 }
2008
2009 if (offset != view->offset || lineno != view->lineno) {
2010 view->offset = offset;
2011 view->lineno = lineno;
2012 return TRUE;
2013 }
2014
2015 return FALSE;
2016 }
2017
2018 /* Scrolling backend */
2019 static void
2020 do_scroll_view(struct view *view, int lines)
2021 {
2022 bool redraw_current_line = FALSE;
2023
2024 /* The rendering expects the new offset. */
2025 view->offset += lines;
2026
2027 assert(0 <= view->offset && view->offset < view->lines);
2028 assert(lines);
2029
2030 /* Move current line into the view. */
2031 if (view->lineno < view->offset) {
2032 view->lineno = view->offset;
2033 redraw_current_line = TRUE;
2034 } else if (view->lineno >= view->offset + view->height) {
2035 view->lineno = view->offset + view->height - 1;
2036 redraw_current_line = TRUE;
2037 }
2038
2039 assert(view->offset <= view->lineno && view->lineno < view->lines);
2040
2041 /* Redraw the whole screen if scrolling is pointless. */
2042 if (view->height < ABS(lines)) {
2043 redraw_view(view);
2044
2045 } else {
2046 int line = lines > 0 ? view->height - lines : 0;
2047 int end = line + ABS(lines);
2048
2049 scrollok(view->win, TRUE);
2050 wscrl(view->win, lines);
2051 scrollok(view->win, FALSE);
2052
2053 while (line < end && draw_view_line(view, line))
2054 line++;
2055
2056 if (redraw_current_line)
2057 draw_view_line(view, view->lineno - view->offset);
2058 wnoutrefresh(view->win);
2059 }
2060
2061 view->has_scrolled = TRUE;
2062 report("");
2063 }
2064
2065 /* Scroll frontend */
2066 static void
2067 scroll_view(struct view *view, enum request request)
2068 {
2069 int lines = 1;
2070
2071 assert(view_is_displayed(view));
2072
2073 switch (request) {
2074 case REQ_SCROLL_FIRST_COL:
2075 view->yoffset = 0;
2076 redraw_view_from(view, 0);
2077 report("");
2078 return;
2079 case REQ_SCROLL_LEFT:
2080 if (view->yoffset == 0) {
2081 report("Cannot scroll beyond the first column");
2082 return;
2083 }
2084 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2085 view->yoffset = 0;
2086 else
2087 view->yoffset -= apply_step(opt_hscroll, view->width);
2088 redraw_view_from(view, 0);
2089 report("");
2090 return;
2091 case REQ_SCROLL_RIGHT:
2092 view->yoffset += apply_step(opt_hscroll, view->width);
2093 redraw_view(view);
2094 report("");
2095 return;
2096 case REQ_SCROLL_PAGE_DOWN:
2097 lines = view->height;
2098 case REQ_SCROLL_LINE_DOWN:
2099 if (view->offset + lines > view->lines)
2100 lines = view->lines - view->offset;
2101
2102 if (lines == 0 || view->offset + view->height >= view->lines) {
2103 report("Cannot scroll beyond the last line");
2104 return;
2105 }
2106 break;
2107
2108 case REQ_SCROLL_PAGE_UP:
2109 lines = view->height;
2110 case REQ_SCROLL_LINE_UP:
2111 if (lines > view->offset)
2112 lines = view->offset;
2113
2114 if (lines == 0) {
2115 report("Cannot scroll beyond the first line");
2116 return;
2117 }
2118
2119 lines = -lines;
2120 break;
2121
2122 default:
2123 die("request %d not handled in switch", request);
2124 }
2125
2126 do_scroll_view(view, lines);
2127 }
2128
2129 /* Cursor moving */
2130 static void
2131 move_view(struct view *view, enum request request)
2132 {
2133 int scroll_steps = 0;
2134 int steps;
2135
2136 switch (request) {
2137 case REQ_MOVE_FIRST_LINE:
2138 steps = -view->lineno;
2139 break;
2140
2141 case REQ_MOVE_LAST_LINE:
2142 steps = view->lines - view->lineno - 1;
2143 break;
2144
2145 case REQ_MOVE_PAGE_UP:
2146 steps = view->height > view->lineno
2147 ? -view->lineno : -view->height;
2148 break;
2149
2150 case REQ_MOVE_PAGE_DOWN:
2151 steps = view->lineno + view->height >= view->lines
2152 ? view->lines - view->lineno - 1 : view->height;
2153 break;
2154
2155 case REQ_MOVE_UP:
2156 steps = -1;
2157 break;
2158
2159 case REQ_MOVE_DOWN:
2160 steps = 1;
2161 break;
2162
2163 default:
2164 die("request %d not handled in switch", request);
2165 }
2166
2167 if (steps <= 0 && view->lineno == 0) {
2168 report("Cannot move beyond the first line");
2169 return;
2170
2171 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2172 report("Cannot move beyond the last line");
2173 return;
2174 }
2175
2176 /* Move the current line */
2177 view->lineno += steps;
2178 assert(0 <= view->lineno && view->lineno < view->lines);
2179
2180 /* Check whether the view needs to be scrolled */
2181 if (view->lineno < view->offset ||
2182 view->lineno >= view->offset + view->height) {
2183 scroll_steps = steps;
2184 if (steps < 0 && -steps > view->offset) {
2185 scroll_steps = -view->offset;
2186
2187 } else if (steps > 0) {
2188 if (view->lineno == view->lines - 1 &&
2189 view->lines > view->height) {
2190 scroll_steps = view->lines - view->offset - 1;
2191 if (scroll_steps >= view->height)
2192 scroll_steps -= view->height - 1;
2193 }
2194 }
2195 }
2196
2197 if (!view_is_displayed(view)) {
2198 view->offset += scroll_steps;
2199 assert(0 <= view->offset && view->offset < view->lines);
2200 view->ops->select(view, &view->line[view->lineno]);
2201 return;
2202 }
2203
2204 /* Repaint the old "current" line if we be scrolling */
2205 if (ABS(steps) < view->height)
2206 draw_view_line(view, view->lineno - steps - view->offset);
2207
2208 if (scroll_steps) {
2209 do_scroll_view(view, scroll_steps);
2210 return;
2211 }
2212
2213 /* Draw the current line */
2214 draw_view_line(view, view->lineno - view->offset);
2215
2216 wnoutrefresh(view->win);
2217 report("");
2218 }
2219
2220
2221 /*
2222 * Searching
2223 */
2224
2225 static void search_view(struct view *view, enum request request);
2226
2227 static bool
2228 grep_text(struct view *view, const char *text[])
2229 {
2230 regmatch_t pmatch;
2231 size_t i;
2232
2233 for (i = 0; text[i]; i++)
2234 if (*text[i] &&
2235 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2236 return TRUE;
2237 return FALSE;
2238 }
2239
2240 static void
2241 select_view_line(struct view *view, unsigned long lineno)
2242 {
2243 unsigned long old_lineno = view->lineno;
2244 unsigned long old_offset = view->offset;
2245
2246 if (goto_view_line(view, view->offset, lineno)) {
2247 if (view_is_displayed(view)) {
2248 if (old_offset != view->offset) {
2249 redraw_view(view);
2250 } else {
2251 draw_view_line(view, old_lineno - view->offset);
2252 draw_view_line(view, view->lineno - view->offset);
2253 wnoutrefresh(view->win);
2254 }
2255 } else {
2256 view->ops->select(view, &view->line[view->lineno]);
2257 }
2258 }
2259 }
2260
2261 static void
2262 find_next(struct view *view, enum request request)
2263 {
2264 unsigned long lineno = view->lineno;
2265 int direction;
2266
2267 if (!*view->grep) {
2268 if (!*opt_search)
2269 report("No previous search");
2270 else
2271 search_view(view, request);
2272 return;
2273 }
2274
2275 switch (request) {
2276 case REQ_SEARCH:
2277 case REQ_FIND_NEXT:
2278 direction = 1;
2279 break;
2280
2281 case REQ_SEARCH_BACK:
2282 case REQ_FIND_PREV:
2283 direction = -1;
2284 break;
2285
2286 default:
2287 return;
2288 }
2289
2290 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2291 lineno += direction;
2292
2293 /* Note, lineno is unsigned long so will wrap around in which case it
2294 * will become bigger than view->lines. */
2295 for (; lineno < view->lines; lineno += direction) {
2296 if (view->ops->grep(view, &view->line[lineno])) {
2297 select_view_line(view, lineno);
2298 report("Line %ld matches '%s'", lineno + 1, view->grep);
2299 return;
2300 }
2301 }
2302
2303 report("No match found for '%s'", view->grep);
2304 }
2305
2306 static void
2307 search_view(struct view *view, enum request request)
2308 {
2309 int regex_err;
2310
2311 if (view->regex) {
2312 regfree(view->regex);
2313 *view->grep = 0;
2314 } else {
2315 view->regex = calloc(1, sizeof(*view->regex));
2316 if (!view->regex)
2317 return;
2318 }
2319
2320 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2321 if (regex_err != 0) {
2322 char buf[SIZEOF_STR] = "unknown error";
2323
2324 regerror(regex_err, view->regex, buf, sizeof(buf));
2325 report("Search failed: %s", buf);
2326 return;
2327 }
2328
2329 string_copy(view->grep, opt_search);
2330
2331 find_next(view, request);
2332 }
2333
2334 /*
2335 * Incremental updating
2336 */
2337
2338 static void
2339 reset_view(struct view *view)
2340 {
2341 int i;
2342
2343 for (i = 0; i < view->lines; i++)
2344 free(view->line[i].data);
2345 free(view->line);
2346
2347 view->p_offset = view->offset;
2348 view->p_yoffset = view->yoffset;
2349 view->p_lineno = view->lineno;
2350
2351 view->line = NULL;
2352 view->offset = 0;
2353 view->yoffset = 0;
2354 view->lines = 0;
2355 view->lineno = 0;
2356 view->vid[0] = 0;
2357 view->update_secs = 0;
2358 }
2359
2360 static const char *
2361 format_arg(const char *name)
2362 {
2363 static struct {
2364 const char *name;
2365 size_t namelen;
2366 const char *value;
2367 const char *value_if_empty;
2368 } vars[] = {
2369 #define FORMAT_VAR(name, value, value_if_empty) \
2370 { name, STRING_SIZE(name), value, value_if_empty }
2371 FORMAT_VAR("%(directory)", opt_path, "."),
2372 FORMAT_VAR("%(file)", opt_file, ""),
2373 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2374 FORMAT_VAR("%(head)", ref_head, ""),
2375 FORMAT_VAR("%(commit)", ref_commit, ""),
2376 FORMAT_VAR("%(blob)", ref_blob, ""),
2377 FORMAT_VAR("%(branch)", ref_branch, ""),
2378 };
2379 int i;
2380
2381 for (i = 0; i < ARRAY_SIZE(vars); i++)
2382 if (!strncmp(name, vars[i].name, vars[i].namelen))
2383 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2384
2385 report("Unknown replacement: `%s`", name);
2386 return NULL;
2387 }
2388
2389 static bool
2390 format_argv(const char ***dst_argv, const char *src_argv[], bool replace, bool first)
2391 {
2392 char buf[SIZEOF_STR];
2393 int argc;
2394
2395 argv_free(*dst_argv);
2396
2397 for (argc = 0; src_argv[argc]; argc++) {
2398 const char *arg = src_argv[argc];
2399 size_t bufpos = 0;
2400
2401 if (!strcmp(arg, "%(fileargs)")) {
2402 if (!argv_append_array(dst_argv, opt_file_argv))
2403 break;
2404 continue;
2405
2406 } else if (!strcmp(arg, "%(diffargs)")) {
2407 if (!argv_append_array(dst_argv, opt_diff_argv))
2408 break;
2409 continue;
2410
2411 } else if (!strcmp(arg, "%(blameargs)")) {
2412 if (!argv_append_array(dst_argv, opt_blame_argv))
2413 break;
2414 continue;
2415
2416 } else if (!strcmp(arg, "%(revargs)") ||
2417 (first && !strcmp(arg, "%(commit)"))) {
2418 if (!argv_append_array(dst_argv, opt_rev_argv))
2419 break;
2420 continue;
2421 }
2422
2423 while (arg) {
2424 char *next = strstr(arg, "%(");
2425 int len = next - arg;
2426 const char *value;
2427
2428 if (!next || !replace) {
2429 len = strlen(arg);
2430 value = "";
2431
2432 } else {
2433 value = format_arg(next);
2434
2435 if (!value) {
2436 return FALSE;
2437 }
2438 }
2439
2440 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2441 return FALSE;
2442
2443 arg = next && replace ? strchr(next, ')') + 1 : NULL;
2444 }
2445
2446 if (!argv_append(dst_argv, buf))
2447 break;
2448 }
2449
2450 return src_argv[argc] == NULL;
2451 }
2452
2453 static bool
2454 restore_view_position(struct view *view)
2455 {
2456 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2457 return FALSE;
2458
2459 /* Changing the view position cancels the restoring. */
2460 /* FIXME: Changing back to the first line is not detected. */
2461 if (view->offset != 0 || view->lineno != 0) {
2462 view->p_restore = FALSE;
2463 return FALSE;
2464 }
2465
2466 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2467 view_is_displayed(view))
2468 werase(view->win);
2469
2470 view->yoffset = view->p_yoffset;
2471 view->p_restore = FALSE;
2472
2473 return TRUE;
2474 }
2475
2476 static void
2477 end_update(struct view *view, bool force)
2478 {
2479 if (!view->pipe)
2480 return;
2481 while (!view->ops->read(view, NULL))
2482 if (!force)
2483 return;
2484 if (force)
2485 io_kill(view->pipe);
2486 io_done(view->pipe);
2487 view->pipe = NULL;
2488 }
2489
2490 static void
2491 setup_update(struct view *view, const char *vid)
2492 {
2493 reset_view(view);
2494 string_copy_rev(view->vid, vid);
2495 view->pipe = &view->io;
2496 view->start_time = time(NULL);
2497 }
2498
2499 static bool
2500 prepare_io(struct view *view, const char *dir, const char *argv[], bool replace)
2501 {
2502 view->dir = dir;
2503 return format_argv(&view->argv, argv, replace, !view->prev);
2504 }
2505
2506 static bool
2507 prepare_update(struct view *view, const char *argv[], const char *dir)
2508 {
2509 if (view->pipe)
2510 end_update(view, TRUE);
2511 return prepare_io(view, dir, argv, FALSE);
2512 }
2513
2514 static bool
2515 start_update(struct view *view, const char **argv, const char *dir)
2516 {
2517 if (view->pipe)
2518 io_done(view->pipe);
2519 return prepare_io(view, dir, argv, FALSE) &&
2520 io_run(&view->io, IO_RD, dir, view->argv);
2521 }
2522
2523 static bool
2524 prepare_update_file(struct view *view, const char *name)
2525 {
2526 if (view->pipe)
2527 end_update(view, TRUE);
2528 argv_free(view->argv);
2529 return io_open(&view->io, "%s/%s", opt_cdup[0] ? opt_cdup : ".", name);
2530 }
2531
2532 static bool
2533 view_open(struct view *view, enum open_flags flags)
2534 {
2535 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2536 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2537
2538 if (!reload && !strcmp(view->vid, view->id))
2539 return TRUE;
2540
2541 if (view->pipe)
2542 end_update(view, TRUE);
2543
2544 if (!refresh) {
2545 if (view->ops->prepare) {
2546 if (!view->ops->prepare(view))
2547 return FALSE;
2548 } else if (!prepare_io(view, NULL, view->ops->argv, TRUE)) {
2549 return FALSE;
2550 }
2551
2552 /* Put the current ref_* value to the view title ref
2553 * member. This is needed by the blob view. Most other
2554 * views sets it automatically after loading because the
2555 * first line is a commit line. */
2556 string_copy_rev(view->ref, view->id);
2557 }
2558
2559 if (view->argv && view->argv[0] &&
2560 !io_run(&view->io, IO_RD, view->dir, view->argv))
2561 return FALSE;
2562
2563 setup_update(view, view->id);
2564
2565 return TRUE;
2566 }
2567
2568 static bool
2569 update_view(struct view *view)
2570 {
2571 char out_buffer[BUFSIZ * 2];
2572 char *line;
2573 /* Clear the view and redraw everything since the tree sorting
2574 * might have rearranged things. */
2575 bool redraw = view->lines == 0;
2576 bool can_read = TRUE;
2577
2578 if (!view->pipe)
2579 return TRUE;
2580
2581 if (!io_can_read(view->pipe, FALSE)) {
2582 if (view->lines == 0 && view_is_displayed(view)) {
2583 time_t secs = time(NULL) - view->start_time;
2584
2585 if (secs > 1 && secs > view->update_secs) {
2586 if (view->update_secs == 0)
2587 redraw_view(view);
2588 update_view_title(view);
2589 view->update_secs = secs;
2590 }
2591 }
2592 return TRUE;
2593 }
2594
2595 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2596 if (opt_iconv_in != ICONV_NONE) {
2597 ICONV_CONST char *inbuf = line;
2598 size_t inlen = strlen(line) + 1;
2599
2600 char *outbuf = out_buffer;
2601 size_t outlen = sizeof(out_buffer);
2602
2603 size_t ret;
2604
2605 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2606 if (ret != (size_t) -1)
2607 line = out_buffer;
2608 }
2609
2610 if (!view->ops->read(view, line)) {
2611 report("Allocation failure");
2612 end_update(view, TRUE);
2613 return FALSE;
2614 }
2615 }
2616
2617 {
2618 unsigned long lines = view->lines;
2619 int digits;
2620
2621 for (digits = 0; lines; digits++)
2622 lines /= 10;
2623
2624 /* Keep the displayed view in sync with line number scaling. */
2625 if (digits != view->digits) {
2626 view->digits = digits;
2627 if (opt_line_number || view->type == VIEW_BLAME)
2628 redraw = TRUE;
2629 }
2630 }
2631
2632 if (io_error(view->pipe)) {
2633 report("Failed to read: %s", io_strerror(view->pipe));
2634 end_update(view, TRUE);
2635
2636 } else if (io_eof(view->pipe)) {
2637 if (view_is_displayed(view))
2638 report("");
2639 end_update(view, FALSE);
2640 }
2641
2642 if (restore_view_position(view))
2643 redraw = TRUE;
2644
2645 if (!view_is_displayed(view))
2646 return TRUE;
2647
2648 if (redraw)
2649 redraw_view_from(view, 0);
2650 else
2651 redraw_view_dirty(view);
2652
2653 /* Update the title _after_ the redraw so that if the redraw picks up a
2654 * commit reference in view->ref it'll be available here. */
2655 update_view_title(view);
2656 return TRUE;
2657 }
2658
2659 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2660
2661 static struct line *
2662 add_line_data(struct view *view, void *data, enum line_type type)
2663 {
2664 struct line *line;
2665
2666 if (!realloc_lines(&view->line, view->lines, 1))
2667 return NULL;
2668
2669 line = &view->line[view->lines++];
2670 memset(line, 0, sizeof(*line));
2671 line->type = type;
2672 line->data = data;
2673 line->dirty = 1;
2674
2675 return line;
2676 }
2677
2678 static struct line *
2679 add_line_text(struct view *view, const char *text, enum line_type type)
2680 {
2681 char *data = text ? strdup(text) : NULL;
2682
2683 return data ? add_line_data(view, data, type) : NULL;
2684 }
2685
2686 static struct line *
2687 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2688 {
2689 char buf[SIZEOF_STR];
2690 va_list args;
2691
2692 va_start(args, fmt);
2693 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2694 buf[0] = 0;
2695 va_end(args);
2696
2697 return buf[0] ? add_line_text(view, buf, type) : NULL;
2698 }
2699
2700 /*
2701 * View opening
2702 */
2703
2704 static void
2705 open_view(struct view *prev, enum request request, enum open_flags flags)
2706 {
2707 bool split = !!(flags & OPEN_SPLIT);
2708 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2709 bool nomaximize = !!(flags & OPEN_REFRESH);
2710 struct view *view = VIEW(request);
2711 int nviews = displayed_views();
2712 struct view *base_view = display[0];
2713
2714 if (view == prev && nviews == 1 && !reload) {
2715 report("Already in %s view", view->name);
2716 return;
2717 }
2718
2719 if (view->git_dir && !opt_git_dir[0]) {
2720 report("The %s view is disabled in pager view", view->name);
2721 return;
2722 }
2723
2724 if (split) {
2725 display[1] = view;
2726 current_view = 1;
2727 view->parent = prev;
2728 } else if (!nomaximize) {
2729 /* Maximize the current view. */
2730 memset(display, 0, sizeof(display));
2731 current_view = 0;
2732 display[current_view] = view;
2733 }
2734
2735 /* No prev signals that this is the first loaded view. */
2736 if (prev && view != prev) {
2737 view->prev = prev;
2738 }
2739
2740 /* Resize the view when switching between split- and full-screen,
2741 * or when switching between two different full-screen views. */
2742 if (nviews != displayed_views() ||
2743 (nviews == 1 && base_view != display[0]))
2744 resize_display();
2745
2746 if (view->ops->open) {
2747 if (view->pipe)
2748 end_update(view, TRUE);
2749 if (!view->ops->open(view, flags)) {
2750 report("Failed to load %s view", view->name);
2751 return;
2752 }
2753 restore_view_position(view);
2754 }
2755
2756 if (split && prev->lineno - prev->offset >= prev->height) {
2757 /* Take the title line into account. */
2758 int lines = prev->lineno - prev->offset - prev->height + 1;
2759
2760 /* Scroll the view that was split if the current line is
2761 * outside the new limited view. */
2762 do_scroll_view(prev, lines);
2763 }
2764
2765 if (prev && view != prev && split && view_is_displayed(prev)) {
2766 /* "Blur" the previous view. */
2767 update_view_title(prev);
2768 }
2769
2770 if (view->pipe && view->lines == 0) {
2771 /* Clear the old view and let the incremental updating refill
2772 * the screen. */
2773 werase(view->win);
2774 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2775 report("");
2776 } else if (view_is_displayed(view)) {
2777 redraw_view(view);
2778 report("");
2779 }
2780 }
2781
2782 static void
2783 open_external_viewer(const char *argv[], const char *dir)
2784 {
2785 def_prog_mode(); /* save current tty modes */
2786 endwin(); /* restore original tty modes */
2787 io_run_fg(argv, dir);
2788 fprintf(stderr, "Press Enter to continue");
2789 getc(opt_tty);
2790 reset_prog_mode();
2791 redraw_display(TRUE);
2792 }
2793
2794 static void
2795 open_mergetool(const char *file)
2796 {
2797 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2798
2799 open_external_viewer(mergetool_argv, opt_cdup);
2800 }
2801
2802 static void
2803 open_editor(const char *file)
2804 {
2805 const char *editor_argv[] = { "vi", file, NULL };
2806 const char *editor;
2807
2808 editor = getenv("GIT_EDITOR");
2809 if (!editor && *opt_editor)
2810 editor = opt_editor;
2811 if (!editor)
2812 editor = getenv("VISUAL");
2813 if (!editor)
2814 editor = getenv("EDITOR");
2815 if (!editor)
2816 editor = "vi";
2817
2818 editor_argv[0] = editor;
2819 open_external_viewer(editor_argv, opt_cdup);
2820 }
2821
2822 static void
2823 open_run_request(enum request request)
2824 {
2825 struct run_request *req = get_run_request(request);
2826 const char **argv = NULL;
2827
2828 if (!req) {
2829 report("Unknown run request");
2830 return;
2831 }
2832
2833 if (format_argv(&argv, req->argv, TRUE, FALSE))
2834 open_external_viewer(argv, NULL);
2835 if (argv)
2836 argv_free(argv);
2837 free(argv);
2838 }
2839
2840 /*
2841 * User request switch noodle
2842 */
2843
2844 static int
2845 view_driver(struct view *view, enum request request)
2846 {
2847 int i;
2848
2849 if (request == REQ_NONE)
2850 return TRUE;
2851
2852 if (request > REQ_NONE) {
2853 open_run_request(request);
2854 view_request(view, REQ_REFRESH);
2855 return TRUE;
2856 }
2857
2858 request = view_request(view, request);
2859 if (request == REQ_NONE)
2860 return TRUE;
2861
2862 switch (request) {
2863 case REQ_MOVE_UP:
2864 case REQ_MOVE_DOWN:
2865 case REQ_MOVE_PAGE_UP:
2866 case REQ_MOVE_PAGE_DOWN:
2867 case REQ_MOVE_FIRST_LINE:
2868 case REQ_MOVE_LAST_LINE:
2869 move_view(view, request);
2870 break;
2871
2872 case REQ_SCROLL_FIRST_COL:
2873 case REQ_SCROLL_LEFT:
2874 case REQ_SCROLL_RIGHT:
2875 case REQ_SCROLL_LINE_DOWN:
2876 case REQ_SCROLL_LINE_UP:
2877 case REQ_SCROLL_PAGE_DOWN:
2878 case REQ_SCROLL_PAGE_UP:
2879 scroll_view(view, request);
2880 break;
2881
2882 case REQ_VIEW_BLAME:
2883 if (!opt_file[0]) {
2884 report("No file chosen, press %s to open tree view",
2885 get_key(view->keymap, REQ_VIEW_TREE));
2886 break;
2887 }
2888 open_view(view, request, OPEN_DEFAULT);
2889 break;
2890
2891 case REQ_VIEW_BLOB:
2892 if (!ref_blob[0]) {
2893 report("No file chosen, press %s to open tree view",
2894 get_key(view->keymap, REQ_VIEW_TREE));
2895 break;
2896 }
2897 open_view(view, request, OPEN_DEFAULT);
2898 break;
2899
2900 case REQ_VIEW_PAGER:
2901 if (view == NULL) {
2902 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2903 die("Failed to open stdin");
2904 open_view(view, request, OPEN_PREPARED);
2905 break;
2906 }
2907
2908 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2909 report("No pager content, press %s to run command from prompt",
2910 get_key(view->keymap, REQ_PROMPT));
2911 break;
2912 }
2913 open_view(view, request, OPEN_DEFAULT);
2914 break;
2915
2916 case REQ_VIEW_STAGE:
2917 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2918 report("No stage content, press %s to open the status view and choose file",
2919 get_key(view->keymap, REQ_VIEW_STATUS));
2920 break;
2921 }
2922 open_view(view, request, OPEN_DEFAULT);
2923 break;
2924
2925 case REQ_VIEW_STATUS:
2926 if (opt_is_inside_work_tree == FALSE) {
2927 report("The status view requires a working tree");
2928 break;
2929 }
2930 open_view(view, request, OPEN_DEFAULT);
2931 break;
2932
2933 case REQ_VIEW_MAIN:
2934 case REQ_VIEW_DIFF:
2935 case REQ_VIEW_LOG:
2936 case REQ_VIEW_TREE:
2937 case REQ_VIEW_HELP:
2938 case REQ_VIEW_BRANCH:
2939 open_view(view, request, OPEN_DEFAULT);
2940 break;
2941
2942 case REQ_NEXT:
2943 case REQ_PREVIOUS:
2944 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2945
2946 if (view->parent) {
2947 int line;
2948
2949 view = view->parent;
2950 line = view->lineno;
2951 move_view(view, request);
2952 if (view_is_displayed(view))
2953 update_view_title(view);
2954 if (line != view->lineno)
2955 view_request(view, REQ_ENTER);
2956 } else {
2957 move_view(view, request);
2958 }
2959 break;
2960
2961 case REQ_VIEW_NEXT:
2962 {
2963 int nviews = displayed_views();
2964 int next_view = (current_view + 1) % nviews;
2965
2966 if (next_view == current_view) {
2967 report("Only one view is displayed");
2968 break;
2969 }
2970
2971 current_view = next_view;
2972 /* Blur out the title of the previous view. */
2973 update_view_title(view);
2974 report("");
2975 break;
2976 }
2977 case REQ_REFRESH:
2978 report("Refreshing is not yet supported for the %s view", view->name);
2979 break;
2980
2981 case REQ_MAXIMIZE:
2982 if (displayed_views() == 2)
2983 maximize_view(view);
2984 break;
2985
2986 case REQ_OPTIONS:
2987 case REQ_TOGGLE_LINENO:
2988 case REQ_TOGGLE_DATE:
2989 case REQ_TOGGLE_AUTHOR:
2990 case REQ_TOGGLE_GRAPHIC:
2991 case REQ_TOGGLE_REV_GRAPH:
2992 case REQ_TOGGLE_REFS:
2993 toggle_option(request);
2994 break;
2995
2996 case REQ_TOGGLE_SORT_FIELD:
2997 case REQ_TOGGLE_SORT_ORDER:
2998 report("Sorting is not yet supported for the %s view", view->name);
2999 break;
3000
3001 case REQ_SEARCH:
3002 case REQ_SEARCH_BACK:
3003 search_view(view, request);
3004 break;
3005
3006 case REQ_FIND_NEXT:
3007 case REQ_FIND_PREV:
3008 find_next(view, request);
3009 break;
3010
3011 case REQ_STOP_LOADING:
3012 foreach_view(view, i) {
3013 if (view->pipe)
3014 report("Stopped loading the %s view", view->name),
3015 end_update(view, TRUE);
3016 }
3017 break;
3018
3019 case REQ_SHOW_VERSION:
3020 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3021 return TRUE;
3022
3023 case REQ_SCREEN_REDRAW:
3024 redraw_display(TRUE);
3025 break;
3026
3027 case REQ_EDIT:
3028 report("Nothing to edit");
3029 break;
3030
3031 case REQ_ENTER:
3032 report("Nothing to enter");
3033 break;
3034
3035 case REQ_VIEW_CLOSE:
3036 /* XXX: Mark closed views by letting view->prev point to the
3037 * view itself. Parents to closed view should never be
3038 * followed. */
3039 if (view->prev && view->prev != view) {
3040 maximize_view(view->prev);
3041 view->prev = view;
3042 break;
3043 }
3044 /* Fall-through */
3045 case REQ_QUIT:
3046 return FALSE;
3047
3048 default:
3049 report("Unknown key, press %s for help",
3050 get_key(view->keymap, REQ_VIEW_HELP));
3051 return TRUE;
3052 }
3053
3054 return TRUE;
3055 }
3056
3057
3058 /*
3059 * View backend utilities
3060 */
3061
3062 enum sort_field {
3063 ORDERBY_NAME,
3064 ORDERBY_DATE,
3065 ORDERBY_AUTHOR,
3066 };
3067
3068 struct sort_state {
3069 const enum sort_field *fields;
3070 size_t size, current;
3071 bool reverse;
3072 };
3073
3074 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3075 #define get_sort_field(state) ((state).fields[(state).current])
3076 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3077
3078 static void
3079 sort_view(struct view *view, enum request request, struct sort_state *state,
3080 int (*compare)(const void *, const void *))
3081 {
3082 switch (request) {
3083 case REQ_TOGGLE_SORT_FIELD:
3084 state->current = (state->current + 1) % state->size;
3085 break;
3086
3087 case REQ_TOGGLE_SORT_ORDER:
3088 state->reverse = !state->reverse;
3089 break;
3090 default:
3091 die("Not a sort request");
3092 }
3093
3094 qsort(view->line, view->lines, sizeof(*view->line), compare);
3095 redraw_view(view);
3096 }
3097
3098 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3099
3100 /* Small author cache to reduce memory consumption. It uses binary
3101 * search to lookup or find place to position new entries. No entries
3102 * are ever freed. */
3103 static const char *
3104 get_author(const char *name)
3105 {
3106 static const char **authors;
3107 static size_t authors_size;
3108 int from = 0, to = authors_size - 1;
3109
3110 while (from <= to) {
3111 size_t pos = (to + from) / 2;
3112 int cmp = strcmp(name, authors[pos]);
3113
3114 if (!cmp)
3115 return authors[pos];
3116
3117 if (cmp < 0)
3118 to = pos - 1;
3119 else
3120 from = pos + 1;
3121 }
3122
3123 if (!realloc_authors(&authors, authors_size, 1))
3124 return NULL;
3125 name = strdup(name);
3126 if (!name)
3127 return NULL;
3128
3129 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3130 authors[from] = name;
3131 authors_size++;
3132
3133 return name;
3134 }
3135
3136 static void
3137 parse_timesec(struct time *time, const char *sec)
3138 {
3139 time->sec = (time_t) atol(sec);
3140 }
3141
3142 static void
3143 parse_timezone(struct time *time, const char *zone)
3144 {
3145 long tz;
3146
3147 tz = ('0' - zone[1]) * 60 * 60 * 10;
3148 tz += ('0' - zone[2]) * 60 * 60;
3149 tz += ('0' - zone[3]) * 60 * 10;
3150 tz += ('0' - zone[4]) * 60;
3151
3152 if (zone[0] == '-')
3153 tz = -tz;
3154
3155 time->tz = tz;
3156 time->sec -= tz;
3157 }
3158
3159 /* Parse author lines where the name may be empty:
3160 * author <email@address.tld> 1138474660 +0100
3161 */
3162 static void
3163 parse_author_line(char *ident, const char **author, struct time *time)
3164 {
3165 char *nameend = strchr(ident, '<');
3166 char *emailend = strchr(ident, '>');
3167
3168 if (nameend && emailend)
3169 *nameend = *emailend = 0;
3170 ident = chomp_string(ident);
3171 if (!*ident) {
3172 if (nameend)
3173 ident = chomp_string(nameend + 1);
3174 if (!*ident)
3175 ident = "Unknown";
3176 }
3177
3178 *author = get_author(ident);
3179
3180 /* Parse epoch and timezone */
3181 if (emailend && emailend[1] == ' ') {
3182 char *secs = emailend + 2;
3183 char *zone = strchr(secs, ' ');
3184
3185 parse_timesec(time, secs);
3186
3187 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3188 parse_timezone(time, zone + 1);
3189 }
3190 }
3191
3192 /*
3193 * Pager backend
3194 */
3195
3196 static bool
3197 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3198 {
3199 if (opt_line_number && draw_lineno(view, lineno))
3200 return TRUE;
3201
3202 draw_text(view, line->type, line->data);
3203 return TRUE;
3204 }
3205
3206 static bool
3207 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3208 {
3209 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3210 char ref[SIZEOF_STR];
3211
3212 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3213 return TRUE;
3214
3215 /* This is the only fatal call, since it can "corrupt" the buffer. */
3216 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3217 return FALSE;
3218
3219 return TRUE;
3220 }
3221
3222 static void
3223 add_pager_refs(struct view *view, struct line *line)
3224 {
3225 char buf[SIZEOF_STR];
3226 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3227 struct ref_list *list;
3228 size_t bufpos = 0, i;
3229 const char *sep = "Refs: ";
3230 bool is_tag = FALSE;
3231
3232 assert(line->type == LINE_COMMIT);
3233
3234 list = get_ref_list(commit_id);
3235 if (!list) {
3236 if (view->type == VIEW_DIFF)
3237 goto try_add_describe_ref;
3238 return;
3239 }
3240
3241 for (i = 0; i < list->size; i++) {
3242 struct ref *ref = list->refs[i];
3243 const char *fmt = ref->tag ? "%s[%s]" :
3244 ref->remote ? "%s<%s>" : "%s%s";
3245
3246 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3247 return;
3248 sep = ", ";
3249 if (ref->tag)
3250 is_tag = TRUE;
3251 }
3252
3253 if (!is_tag && view->type == VIEW_DIFF) {
3254 try_add_describe_ref:
3255 /* Add <tag>-g<commit_id> "fake" reference. */
3256 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3257 return;
3258 }
3259
3260 if (bufpos == 0)
3261 return;
3262
3263 add_line_text(view, buf, LINE_PP_REFS);
3264 }
3265
3266 static bool
3267 pager_read(struct view *view, char *data)
3268 {
3269 struct line *line;
3270
3271 if (!data)
3272 return TRUE;
3273
3274 line = add_line_text(view, data, get_line_type(data));
3275 if (!line)
3276 return FALSE;
3277
3278 if (line->type == LINE_COMMIT &&
3279 (view->type == VIEW_DIFF ||
3280 view->type == VIEW_LOG))
3281 add_pager_refs(view, line);
3282
3283 return TRUE;
3284 }
3285
3286 static enum request
3287 pager_request(struct view *view, enum request request, struct line *line)
3288 {
3289 int split = 0;
3290
3291 if (request != REQ_ENTER)
3292 return request;
3293
3294 if (line->type == LINE_COMMIT &&
3295 (view->type == VIEW_LOG ||
3296 view->type == VIEW_PAGER)) {
3297 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3298 split = 1;
3299 }
3300
3301 /* Always scroll the view even if it was split. That way
3302 * you can use Enter to scroll through the log view and
3303 * split open each commit diff. */
3304 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3305
3306 /* FIXME: A minor workaround. Scrolling the view will call report("")
3307 * but if we are scrolling a non-current view this won't properly
3308 * update the view title. */
3309 if (split)
3310 update_view_title(view);
3311
3312 return REQ_NONE;
3313 }
3314
3315 static bool
3316 pager_grep(struct view *view, struct line *line)
3317 {
3318 const char *text[] = { line->data, NULL };
3319
3320 return grep_text(view, text);
3321 }
3322
3323 static void
3324 pager_select(struct view *view, struct line *line)
3325 {
3326 if (line->type == LINE_COMMIT) {
3327 char *text = (char *)line->data + STRING_SIZE("commit ");
3328
3329 if (view->type != VIEW_PAGER)
3330 string_copy_rev(view->ref, text);
3331 string_copy_rev(ref_commit, text);
3332 }
3333 }
3334
3335 static struct view_ops pager_ops = {
3336 "line",
3337 NULL,
3338 view_open,
3339 pager_read,
3340 pager_draw,
3341 pager_request,
3342 pager_grep,
3343 pager_select,
3344 };
3345
3346 static const char *log_argv[SIZEOF_ARG] = {
3347 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3348 };
3349
3350 static enum request
3351 log_request(struct view *view, enum request request, struct line *line)
3352 {
3353 switch (request) {
3354 case REQ_REFRESH:
3355 load_refs();
3356 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3357 return REQ_NONE;
3358 default:
3359 return pager_request(view, request, line);
3360 }
3361 }
3362
3363 static struct view_ops log_ops = {
3364 "line",
3365 log_argv,
3366 view_open,
3367 pager_read,
3368 pager_draw,
3369 log_request,
3370 pager_grep,
3371 pager_select,
3372 };
3373
3374 static const char *diff_argv[SIZEOF_ARG] = {
3375 "git", "show", "--pretty=fuller", "--no-color", "--root",
3376 "--patch-with-stat", "--find-copies-harder", "-C",
3377 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3378 };
3379
3380 static bool
3381 diff_read(struct view *view, char *data)
3382 {
3383 if (!data) {
3384 /* Fall back to retry if no diff will be shown. */
3385 if (view->lines == 0 && opt_file_argv) {
3386 int pos = argv_size(view->argv)
3387 - argv_size(opt_file_argv) - 1;
3388
3389 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3390 for (; view->argv[pos]; pos++) {
3391 free((void *) view->argv[pos]);
3392 view->argv[pos] = NULL;
3393 }
3394
3395 if (view->pipe)
3396 io_done(view->pipe);
3397 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3398 return FALSE;
3399 }
3400 }
3401 return TRUE;
3402 }
3403
3404 return pager_read(view, data);
3405 }
3406
3407 static struct view_ops diff_ops = {
3408 "line",
3409 diff_argv,
3410 view_open,
3411 diff_read,
3412 pager_draw,
3413 pager_request,
3414 pager_grep,
3415 pager_select,
3416 };
3417
3418 /*
3419 * Help backend
3420 */
3421
3422 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
3423
3424 static bool
3425 help_open_keymap_title(struct view *view, enum keymap keymap)
3426 {
3427 struct line *line;
3428
3429 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3430 help_keymap_hidden[keymap] ? '+' : '-',
3431 enum_name(keymap_table[keymap]));
3432 if (line)
3433 line->other = keymap;
3434
3435 return help_keymap_hidden[keymap];
3436 }
3437
3438 static void
3439 help_open_keymap(struct view *view, enum keymap keymap)
3440 {
3441 const char *group = NULL;
3442 char buf[SIZEOF_STR];
3443 size_t bufpos;
3444 bool add_title = TRUE;
3445 int i;
3446
3447 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3448 const char *key = NULL;
3449
3450 if (req_info[i].request == REQ_NONE)
3451 continue;
3452
3453 if (!req_info[i].request) {
3454 group = req_info[i].help;
3455 continue;
3456 }
3457
3458 key = get_keys(keymap, req_info[i].request, TRUE);
3459 if (!key || !*key)
3460 continue;
3461
3462 if (add_title && help_open_keymap_title(view, keymap))
3463 return;
3464 add_title = FALSE;
3465
3466 if (group) {
3467 add_line_text(view, group, LINE_HELP_GROUP);
3468 group = NULL;
3469 }
3470
3471 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3472 enum_name(req_info[i]), req_info[i].help);
3473 }
3474
3475 group = "External commands:";
3476
3477 for (i = 0; i < run_requests; i++) {
3478 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3479 const char *key;
3480 int argc;
3481
3482 if (!req || req->keymap != keymap)
3483 continue;
3484
3485 key = get_key_name(req->key);
3486 if (!*key)
3487 key = "(no key defined)";
3488
3489 if (add_title && help_open_keymap_title(view, keymap))
3490 return;
3491 if (group) {
3492 add_line_text(view, group, LINE_HELP_GROUP);
3493 group = NULL;
3494 }
3495
3496 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3497 if (!string_format_from(buf, &bufpos, "%s%s",
3498 argc ? " " : "", req->argv[argc]))
3499 return;
3500
3501 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3502 }
3503 }
3504
3505 static bool
3506 help_open(struct view *view, enum open_flags flags)
3507 {
3508 enum keymap keymap;
3509
3510 reset_view(view);
3511 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3512 add_line_text(view, "", LINE_DEFAULT);
3513
3514 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
3515 help_open_keymap(view, keymap);
3516
3517 return TRUE;
3518 }
3519
3520 static enum request
3521 help_request(struct view *view, enum request request, struct line *line)
3522 {
3523 switch (request) {
3524 case REQ_ENTER:
3525 if (line->type == LINE_HELP_KEYMAP) {
3526 help_keymap_hidden[line->other] =
3527 !help_keymap_hidden[line->other];
3528 view->p_restore = TRUE;
3529 open_view(view, REQ_VIEW_HELP, OPEN_REFRESH);
3530 }
3531
3532 return REQ_NONE;
3533 default:
3534 return pager_request(view, request, line);
3535 }
3536 }
3537
3538 static struct view_ops help_ops = {
3539 "line",
3540 NULL,
3541 help_open,
3542 NULL,
3543 pager_draw,
3544 help_request,
3545 pager_grep,
3546 pager_select,
3547 };
3548
3549
3550 /*
3551 * Tree backend
3552 */
3553
3554 struct tree_stack_entry {
3555 struct tree_stack_entry *prev; /* Entry below this in the stack */
3556 unsigned long lineno; /* Line number to restore */
3557 char *name; /* Position of name in opt_path */
3558 };
3559
3560 /* The top of the path stack. */
3561 static struct tree_stack_entry *tree_stack = NULL;
3562 unsigned long tree_lineno = 0;
3563
3564 static void
3565 pop_tree_stack_entry(void)
3566 {
3567 struct tree_stack_entry *entry = tree_stack;
3568
3569 tree_lineno = entry->lineno;
3570 entry->name[0] = 0;
3571 tree_stack = entry->prev;
3572 free(entry);
3573 }
3574
3575 static void
3576 push_tree_stack_entry(const char *name, unsigned long lineno)
3577 {
3578 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3579 size_t pathlen = strlen(opt_path);
3580
3581 if (!entry)
3582 return;
3583
3584 entry->prev = tree_stack;
3585 entry->name = opt_path + pathlen;
3586 tree_stack = entry;
3587
3588 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3589 pop_tree_stack_entry();
3590 return;
3591 }
3592
3593 /* Move the current line to the first tree entry. */
3594 tree_lineno = 1;
3595 entry->lineno = lineno;
3596 }
3597
3598 /* Parse output from git-ls-tree(1):
3599 *
3600 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3601 */
3602
3603 #define SIZEOF_TREE_ATTR \
3604 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3605
3606 #define SIZEOF_TREE_MODE \
3607 STRING_SIZE("100644 ")
3608
3609 #define TREE_ID_OFFSET \
3610 STRING_SIZE("100644 blob ")
3611
3612 struct tree_entry {
3613 char id[SIZEOF_REV];
3614 mode_t mode;
3615 struct time time; /* Date from the author ident. */
3616 const char *author; /* Author of the commit. */
3617 char name[1];
3618 };
3619
3620 static const char *
3621 tree_path(const struct line *line)
3622 {
3623 return ((struct tree_entry *) line->data)->name;
3624 }
3625
3626 static int
3627 tree_compare_entry(const struct line *line1, const struct line *line2)
3628 {
3629 if (line1->type != line2->type)
3630 return line1->type == LINE_TREE_DIR ? -1 : 1;
3631 return strcmp(tree_path(line1), tree_path(line2));
3632 }
3633
3634 static const enum sort_field tree_sort_fields[] = {
3635 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3636 };
3637 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3638
3639 static int
3640 tree_compare(const void *l1, const void *l2)
3641 {
3642 const struct line *line1 = (const struct line *) l1;
3643 const struct line *line2 = (const struct line *) l2;
3644 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3645 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3646
3647 if (line1->type == LINE_TREE_HEAD)
3648 return -1;
3649 if (line2->type == LINE_TREE_HEAD)
3650 return 1;
3651
3652 switch (get_sort_field(tree_sort_state)) {
3653 case ORDERBY_DATE:
3654 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3655
3656 case ORDERBY_AUTHOR:
3657 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3658
3659 case ORDERBY_NAME:
3660 default:
3661 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3662 }
3663 }
3664
3665
3666 static struct line *
3667 tree_entry(struct view *view, enum line_type type, const char *path,
3668 const char *mode, const char *id)
3669 {
3670 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3671 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3672
3673 if (!entry || !line) {
3674 free(entry);
3675 return NULL;
3676 }
3677
3678 strncpy(entry->name, path, strlen(path));
3679 if (mode)
3680 entry->mode = strtoul(mode, NULL, 8);
3681 if (id)
3682 string_copy_rev(entry->id, id);
3683
3684 return line;
3685 }
3686
3687 static bool
3688 tree_read_date(struct view *view, char *text, bool *read_date)
3689 {
3690 static const char *author_name;
3691 static struct time author_time;
3692
3693 if (!text && *read_date) {
3694 *read_date = FALSE;
3695 return TRUE;
3696
3697 } else if (!text) {
3698 char *path = *opt_path ? opt_path : ".";
3699 /* Find next entry to process */
3700 const char *log_file[] = {
3701 "git", "log", "--no-color", "--pretty=raw",
3702 "--cc", "--raw", view->id, "--", path, NULL
3703 };
3704
3705 if (!view->lines) {
3706 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3707 report("Tree is empty");
3708 return TRUE;
3709 }
3710
3711 if (!start_update(view, log_file, opt_cdup)) {
3712 report("Failed to load tree data");
3713 return TRUE;
3714 }
3715
3716 *read_date = TRUE;
3717 return FALSE;
3718
3719 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3720 parse_author_line(text + STRING_SIZE("author "),
3721 &author_name, &author_time);
3722
3723 } else if (*text == ':') {
3724 char *pos;
3725 size_t annotated = 1;
3726 size_t i;
3727
3728 pos = strchr(text, '\t');
3729 if (!pos)
3730 return TRUE;
3731 text = pos + 1;
3732 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3733 text += strlen(opt_path);
3734 pos = strchr(text, '/');
3735 if (pos)
3736 *pos = 0;
3737
3738 for (i = 1; i < view->lines; i++) {
3739 struct line *line = &view->line[i];
3740 struct tree_entry *entry = line->data;
3741
3742 annotated += !!entry->author;
3743 if (entry->author || strcmp(entry->name, text))
3744 continue;
3745
3746 entry->author = author_name;
3747 entry->time = author_time;
3748 line->dirty = 1;
3749 break;
3750 }
3751
3752 if (annotated == view->lines)
3753 io_kill(view->pipe);
3754 }
3755 return TRUE;
3756 }
3757
3758 static bool
3759 tree_read(struct view *view, char *text)
3760 {
3761 static bool read_date = FALSE;
3762 struct tree_entry *data;
3763 struct line *entry, *line;
3764 enum line_type type;
3765 size_t textlen = text ? strlen(text) : 0;
3766 char *path = text + SIZEOF_TREE_ATTR;
3767
3768 if (read_date || !text)
3769 return tree_read_date(view, text, &read_date);
3770
3771 if (textlen <= SIZEOF_TREE_ATTR)
3772 return FALSE;
3773 if (view->lines == 0 &&
3774 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3775 return FALSE;
3776
3777 /* Strip the path part ... */
3778 if (*opt_path) {
3779 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3780 size_t striplen = strlen(opt_path);
3781
3782 if (pathlen > striplen)
3783 memmove(path, path + striplen,
3784 pathlen - striplen + 1);
3785
3786 /* Insert "link" to parent directory. */
3787 if (view->lines == 1 &&
3788 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3789 return FALSE;
3790 }
3791
3792 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3793 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3794 if (!entry)
3795 return FALSE;
3796 data = entry->data;
3797
3798 /* Skip "Directory ..." and ".." line. */
3799 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3800 if (tree_compare_entry(line, entry) <= 0)
3801 continue;
3802
3803 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3804
3805 line->data = data;
3806 line->type = type;
3807 for (; line <= entry; line++)
3808 line->dirty = line->cleareol = 1;
3809 return TRUE;
3810 }
3811
3812 if (tree_lineno > view->lineno) {
3813 view->lineno = tree_lineno;
3814 tree_lineno = 0;
3815 }
3816
3817 return TRUE;
3818 }
3819
3820 static bool
3821 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3822 {
3823 struct tree_entry *entry = line->data;
3824
3825 if (line->type == LINE_TREE_HEAD) {
3826 if (draw_text(view, line->type, "Directory path /"))
3827 return TRUE;
3828 } else {
3829 if (draw_mode(view, entry->mode))
3830 return TRUE;
3831
3832 if (opt_author && draw_author(view, entry->author))
3833 return TRUE;
3834
3835 if (opt_date && draw_date(view, &entry->time))
3836 return TRUE;
3837 }
3838
3839 draw_text(view, line->type, entry->name);
3840 return TRUE;
3841 }
3842
3843 static void
3844 open_blob_editor(const char *id)
3845 {
3846 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3847 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3848 int fd = mkstemp(file);
3849
3850 if (fd == -1)
3851 report("Failed to create temporary file");
3852 else if (!io_run_append(blob_argv, fd))
3853 report("Failed to save blob data to file");
3854 else
3855 open_editor(file);
3856 if (fd != -1)
3857 unlink(file);
3858 }
3859
3860 static enum request
3861 tree_request(struct view *view, enum request request, struct line *line)
3862 {
3863 enum open_flags flags;
3864 struct tree_entry *entry = line->data;
3865
3866 switch (request) {
3867 case REQ_VIEW_BLAME:
3868 if (line->type != LINE_TREE_FILE) {
3869 report("Blame only supported for files");
3870 return REQ_NONE;
3871 }
3872
3873 string_copy(opt_ref, view->vid);
3874 return request;
3875
3876 case REQ_EDIT:
3877 if (line->type != LINE_TREE_FILE) {
3878 report("Edit only supported for files");
3879 } else if (!is_head_commit(view->vid)) {
3880 open_blob_editor(entry->id);
3881 } else {
3882 open_editor(opt_file);
3883 }
3884 return REQ_NONE;
3885
3886 case REQ_TOGGLE_SORT_FIELD:
3887 case REQ_TOGGLE_SORT_ORDER:
3888 sort_view(view, request, &tree_sort_state, tree_compare);
3889 return REQ_NONE;
3890
3891 case REQ_PARENT:
3892 if (!*opt_path) {
3893 /* quit view if at top of tree */
3894 return REQ_VIEW_CLOSE;
3895 }
3896 /* fake 'cd ..' */
3897 line = &view->line[1];
3898 break;
3899
3900 case REQ_ENTER:
3901 break;
3902
3903 default:
3904 return request;
3905 }
3906
3907 /* Cleanup the stack if the tree view is at a different tree. */
3908 while (!*opt_path && tree_stack)
3909 pop_tree_stack_entry();
3910
3911 switch (line->type) {
3912 case LINE_TREE_DIR:
3913 /* Depending on whether it is a subdirectory or parent link
3914 * mangle the path buffer. */
3915 if (line == &view->line[1] && *opt_path) {
3916 pop_tree_stack_entry();
3917
3918 } else {
3919 const char *basename = tree_path(line);
3920
3921 push_tree_stack_entry(basename, view->lineno);
3922 }
3923
3924 /* Trees and subtrees share the same ID, so they are not not
3925 * unique like blobs. */
3926 flags = OPEN_RELOAD;
3927 request = REQ_VIEW_TREE;
3928 break;
3929
3930 case LINE_TREE_FILE:
3931 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3932 request = REQ_VIEW_BLOB;
3933 break;
3934
3935 default:
3936 return REQ_NONE;
3937 }
3938
3939 open_view(view, request, flags);
3940 if (request == REQ_VIEW_TREE)
3941 view->lineno = tree_lineno;
3942
3943 return REQ_NONE;
3944 }
3945
3946 static bool
3947 tree_grep(struct view *view, struct line *line)
3948 {
3949 struct tree_entry *entry = line->data;
3950 const char *text[] = {
3951 entry->name,
3952 opt_author ? entry->author : "",
3953 mkdate(&entry->time, opt_date),
3954 NULL
3955 };
3956
3957 return grep_text(view, text);
3958 }
3959
3960 static void
3961 tree_select(struct view *view, struct line *line)
3962 {
3963 struct tree_entry *entry = line->data;
3964
3965 if (line->type == LINE_TREE_FILE) {
3966 string_copy_rev(ref_blob, entry->id);
3967 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3968
3969 } else if (line->type != LINE_TREE_DIR) {
3970 return;
3971 }
3972
3973 string_copy_rev(view->ref, entry->id);
3974 }
3975
3976 static bool
3977 tree_prepare(struct view *view)
3978 {
3979 if (view->lines == 0 && opt_prefix[0]) {
3980 char *pos = opt_prefix;
3981
3982 while (pos && *pos) {
3983 char *end = strchr(pos, '/');
3984
3985 if (end)
3986 *end = 0;
3987 push_tree_stack_entry(pos, 0);
3988 pos = end;
3989 if (end) {
3990 *end = '/';
3991 pos++;
3992 }
3993 }
3994
3995 } else if (strcmp(view->vid, view->id)) {
3996 opt_path[0] = 0;
3997 }
3998
3999 return prepare_io(view, opt_cdup, view->ops->argv, TRUE);
4000 }
4001
4002 static const char *tree_argv[SIZEOF_ARG] = {
4003 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4004 };
4005
4006 static struct view_ops tree_ops = {
4007 "file",
4008 tree_argv,
4009 view_open,
4010 tree_read,
4011 tree_draw,
4012 tree_request,
4013 tree_grep,
4014 tree_select,
4015 tree_prepare,
4016 };
4017
4018 static bool
4019 blob_read(struct view *view, char *line)
4020 {
4021 if (!line)
4022 return TRUE;
4023 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4024 }
4025
4026 static enum request
4027 blob_request(struct view *view, enum request request, struct line *line)
4028 {
4029 switch (request) {
4030 case REQ_EDIT:
4031 open_blob_editor(view->vid);
4032 return REQ_NONE;
4033 default:
4034 return pager_request(view, request, line);
4035 }
4036 }
4037
4038 static const char *blob_argv[SIZEOF_ARG] = {
4039 "git", "cat-file", "blob", "%(blob)", NULL
4040 };
4041
4042 static struct view_ops blob_ops = {
4043 "line",
4044 blob_argv,
4045 view_open,
4046 blob_read,
4047 pager_draw,
4048 blob_request,
4049 pager_grep,
4050 pager_select,
4051 };
4052
4053 /*
4054 * Blame backend
4055 *
4056 * Loading the blame view is a two phase job:
4057 *
4058 * 1. File content is read either using opt_file from the
4059 * filesystem or using git-cat-file.
4060 * 2. Then blame information is incrementally added by
4061 * reading output from git-blame.
4062 */
4063
4064 struct blame_commit {
4065 char id[SIZEOF_REV]; /* SHA1 ID. */
4066 char title[128]; /* First line of the commit message. */
4067 const char *author; /* Author of the commit. */
4068 struct time time; /* Date from the author ident. */
4069 char filename[128]; /* Name of file. */
4070 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4071 char parent_filename[128]; /* Parent/previous name of file. */
4072 };
4073
4074 struct blame {
4075 struct blame_commit *commit;
4076 unsigned long lineno;
4077 char text[1];
4078 };
4079
4080 static bool
4081 blame_open(struct view *view, enum open_flags flags)
4082 {
4083 char path[SIZEOF_STR];
4084 size_t i;
4085
4086 if (!view->prev && *opt_prefix) {
4087 string_copy(path, opt_file);
4088 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4089 return FALSE;
4090 }
4091
4092 if (*opt_ref || !io_open(&view->io, "%s%s", opt_cdup, opt_file)) {
4093 const char *blame_cat_file_argv[] = {
4094 "git", "cat-file", "blob", path, NULL
4095 };
4096
4097 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4098 !start_update(view, blame_cat_file_argv, opt_cdup))
4099 return FALSE;
4100 }
4101
4102 /* First pass: remove multiple references to the same commit. */
4103 for (i = 0; i < view->lines; i++) {
4104 struct blame *blame = view->line[i].data;
4105
4106 if (blame->commit && blame->commit->id[0])
4107 blame->commit->id[0] = 0;
4108 else
4109 blame->commit = NULL;
4110 }
4111
4112 /* Second pass: free existing references. */
4113 for (i = 0; i < view->lines; i++) {
4114 struct blame *blame = view->line[i].data;
4115
4116 if (blame->commit)
4117 free(blame->commit);
4118 }
4119
4120 setup_update(view, opt_file);
4121 string_format(view->ref, "%s ...", opt_file);
4122
4123 return TRUE;
4124 }
4125
4126 static struct blame_commit *
4127 get_blame_commit(struct view *view, const char *id)
4128 {
4129 size_t i;
4130
4131 for (i = 0; i < view->lines; i++) {
4132 struct blame *blame = view->line[i].data;
4133
4134 if (!blame->commit)
4135 continue;
4136
4137 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4138 return blame->commit;
4139 }
4140
4141 {
4142 struct blame_commit *commit = calloc(1, sizeof(*commit));
4143
4144 if (commit)
4145 string_ncopy(commit->id, id, SIZEOF_REV);
4146 return commit;
4147 }
4148 }
4149
4150 static bool
4151 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4152 {
4153 const char *pos = *posref;
4154
4155 *posref = NULL;
4156 pos = strchr(pos + 1, ' ');
4157 if (!pos || !isdigit(pos[1]))
4158 return FALSE;
4159 *number = atoi(pos + 1);
4160 if (*number < min || *number > max)
4161 return FALSE;
4162
4163 *posref = pos;
4164 return TRUE;
4165 }
4166
4167 static struct blame_commit *
4168 parse_blame_commit(struct view *view, const char *text, int *blamed)
4169 {
4170 struct blame_commit *commit;
4171 struct blame *blame;
4172 const char *pos = text + SIZEOF_REV - 2;
4173 size_t orig_lineno = 0;
4174 size_t lineno;
4175 size_t group;
4176
4177 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4178 return NULL;
4179
4180 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4181 !parse_number(&pos, &lineno, 1, view->lines) ||
4182 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4183 return NULL;
4184
4185 commit = get_blame_commit(view, text);
4186 if (!commit)
4187 return NULL;
4188
4189 *blamed += group;
4190 while (group--) {
4191 struct line *line = &view->line[lineno + group - 1];
4192
4193 blame = line->data;
4194 blame->commit = commit;
4195 blame->lineno = orig_lineno + group - 1;
4196 line->dirty = 1;
4197 }
4198
4199 return commit;
4200 }
4201
4202 static bool
4203 blame_read_file(struct view *view, const char *line, bool *read_file)
4204 {
4205 if (!line) {
4206 const char *blame_argv[] = {
4207 "git", "blame", "%(blameargs)", "--incremental",
4208 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4209 };
4210
4211 if (view->lines == 0 && !view->prev)
4212 die("No blame exist for %s", view->vid);
4213
4214 if (view->lines == 0 || !start_update(view, blame_argv, opt_cdup)) {
4215 report("Failed to load blame data");
4216 return TRUE;
4217 }
4218
4219 *read_file = FALSE;
4220 return FALSE;
4221
4222 } else {
4223 size_t linelen = strlen(line);
4224 struct blame *blame = malloc(sizeof(*blame) + linelen);
4225
4226 if (!blame)
4227 return FALSE;
4228
4229 blame->commit = NULL;
4230 strncpy(blame->text, line, linelen);
4231 blame->text[linelen] = 0;
4232 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4233 }
4234 }
4235
4236 static bool
4237 match_blame_header(const char *name, char **line)
4238 {
4239 size_t namelen = strlen(name);
4240 bool matched = !strncmp(name, *line, namelen);
4241
4242 if (matched)
4243 *line += namelen;
4244
4245 return matched;
4246 }
4247
4248 static bool
4249 blame_read(struct view *view, char *line)
4250 {
4251 static struct blame_commit *commit = NULL;
4252 static int blamed = 0;
4253 static bool read_file = TRUE;
4254
4255 if (read_file)
4256 return blame_read_file(view, line, &read_file);
4257
4258 if (!line) {
4259 /* Reset all! */
4260 commit = NULL;
4261 blamed = 0;
4262 read_file = TRUE;
4263 string_format(view->ref, "%s", view->vid);
4264 if (view_is_displayed(view)) {
4265 update_view_title(view);
4266 redraw_view_from(view, 0);
4267 }
4268 return TRUE;
4269 }
4270
4271 if (!commit) {
4272 commit = parse_blame_commit(view, line, &blamed);
4273 string_format(view->ref, "%s %2d%%", view->vid,
4274 view->lines ? blamed * 100 / view->lines : 0);
4275
4276 } else if (match_blame_header("author ", &line)) {
4277 commit->author = get_author(line);
4278
4279 } else if (match_blame_header("author-time ", &line)) {
4280 parse_timesec(&commit->time, line);
4281
4282 } else if (match_blame_header("author-tz ", &line)) {
4283 parse_timezone(&commit->time, line);
4284
4285 } else if (match_blame_header("summary ", &line)) {
4286 string_ncopy(commit->title, line, strlen(line));
4287
4288 } else if (match_blame_header("previous ", &line)) {
4289 if (strlen(line) <= SIZEOF_REV)
4290 return FALSE;
4291 string_copy_rev(commit->parent_id, line);
4292 line += SIZEOF_REV;
4293 string_ncopy(commit->parent_filename, line, strlen(line));
4294
4295 } else if (match_blame_header("filename ", &line)) {
4296 string_ncopy(commit->filename, line, strlen(line));
4297 commit = NULL;
4298 }
4299
4300 return TRUE;
4301 }
4302
4303 static bool
4304 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4305 {
4306 struct blame *blame = line->data;
4307 struct time *time = NULL;
4308 const char *id = NULL, *author = NULL;
4309
4310 if (blame->commit && *blame->commit->filename) {
4311 id = blame->commit->id;
4312 author = blame->commit->author;
4313 time = &blame->commit->time;
4314 }
4315
4316 if (opt_date && draw_date(view, time))
4317 return TRUE;
4318
4319 if (opt_author && draw_author(view, author))
4320 return TRUE;
4321
4322 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4323 return TRUE;
4324
4325 if (draw_lineno(view, lineno))
4326 return TRUE;
4327
4328 draw_text(view, LINE_DEFAULT, blame->text);
4329 return TRUE;
4330 }
4331
4332 static bool
4333 check_blame_commit(struct blame *blame, bool check_null_id)
4334 {
4335 if (!blame->commit)
4336 report("Commit data not loaded yet");
4337 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4338 report("No commit exist for the selected line");
4339 else
4340 return TRUE;
4341 return FALSE;
4342 }
4343
4344 static void
4345 setup_blame_parent_line(struct view *view, struct blame *blame)
4346 {
4347 char from[SIZEOF_REF + SIZEOF_STR];
4348 char to[SIZEOF_REF + SIZEOF_STR];
4349 const char *diff_tree_argv[] = {
4350 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4351 "-U0", from, to, "--", NULL
4352 };
4353 struct io io;
4354 int parent_lineno = -1;
4355 int blamed_lineno = -1;
4356 char *line;
4357
4358 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4359 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4360 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4361 return;
4362
4363 while ((line = io_get(&io, '\n', TRUE))) {
4364 if (*line == '@') {
4365 char *pos = strchr(line, '+');
4366
4367 parent_lineno = atoi(line + 4);
4368 if (pos)
4369 blamed_lineno = atoi(pos + 1);
4370
4371 } else if (*line == '+' && parent_lineno != -1) {
4372 if (blame->lineno == blamed_lineno - 1 &&
4373 !strcmp(blame->text, line + 1)) {
4374 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4375 break;
4376 }
4377 blamed_lineno++;
4378 }
4379 }
4380
4381 io_done(&io);
4382 }
4383
4384 static enum request
4385 blame_request(struct view *view, enum request request, struct line *line)
4386 {
4387 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4388 struct blame *blame = line->data;
4389
4390 switch (request) {
4391 case REQ_VIEW_BLAME:
4392 if (check_blame_commit(blame, TRUE)) {
4393 string_copy(opt_ref, blame->commit->id);
4394 string_copy(opt_file, blame->commit->filename);
4395 if (blame->lineno)
4396 view->lineno = blame->lineno;
4397 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4398 }
4399 break;
4400
4401 case REQ_PARENT:
4402 if (!check_blame_commit(blame, TRUE))
4403 break;
4404 if (!*blame->commit->parent_id) {
4405 report("The selected commit has no parents");
4406 } else {
4407 string_copy_rev(opt_ref, blame->commit->parent_id);
4408 string_copy(opt_file, blame->commit->parent_filename);
4409 setup_blame_parent_line(view, blame);
4410 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4411 }
4412 break;
4413
4414 case REQ_ENTER:
4415 if (!check_blame_commit(blame, FALSE))
4416 break;
4417
4418 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4419 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4420 break;
4421
4422 if (!strcmp(blame->commit->id, NULL_ID)) {
4423 struct view *diff = VIEW(REQ_VIEW_DIFF);
4424 const char *diff_index_argv[] = {
4425 "git", "diff-index", "--root", "--patch-with-stat",
4426 "-C", "-M", "HEAD", "--", view->vid, NULL
4427 };
4428
4429 if (!*blame->commit->parent_id) {
4430 diff_index_argv[1] = "diff";
4431 diff_index_argv[2] = "--no-color";
4432 diff_index_argv[6] = "--";
4433 diff_index_argv[7] = "/dev/null";
4434 }
4435
4436 if (!prepare_update(diff, diff_index_argv, NULL)) {
4437 report("Failed to allocate diff command");
4438 break;
4439 }
4440 flags |= OPEN_PREPARED;
4441 }
4442
4443 open_view(view, REQ_VIEW_DIFF, flags);
4444 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4445 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4446 break;
4447
4448 default:
4449 return request;
4450 }
4451
4452 return REQ_NONE;
4453 }
4454
4455 static bool
4456 blame_grep(struct view *view, struct line *line)
4457 {
4458 struct blame *blame = line->data;
4459 struct blame_commit *commit = blame->commit;
4460 const char *text[] = {
4461 blame->text,
4462 commit ? commit->title : "",
4463 commit ? commit->id : "",
4464 commit && opt_author ? commit->author : "",
4465 commit ? mkdate(&commit->time, opt_date) : "",
4466 NULL
4467 };
4468
4469 return grep_text(view, text);
4470 }
4471
4472 static void
4473 blame_select(struct view *view, struct line *line)
4474 {
4475 struct blame *blame = line->data;
4476 struct blame_commit *commit = blame->commit;
4477
4478 if (!commit)
4479 return;
4480
4481 if (!strcmp(commit->id, NULL_ID))
4482 string_ncopy(ref_commit, "HEAD", 4);
4483 else
4484 string_copy_rev(ref_commit, commit->id);
4485 }
4486
4487 static struct view_ops blame_ops = {
4488 "line",
4489 NULL,
4490 blame_open,
4491 blame_read,
4492 blame_draw,
4493 blame_request,
4494 blame_grep,
4495 blame_select,
4496 };
4497
4498 /*
4499 * Branch backend
4500 */
4501
4502 struct branch {
4503 const char *author; /* Author of the last commit. */
4504 struct time time; /* Date of the last activity. */
4505 const struct ref *ref; /* Name and commit ID information. */
4506 };
4507
4508 static const struct ref branch_all;
4509
4510 static const enum sort_field branch_sort_fields[] = {
4511 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4512 };
4513 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4514
4515 static int
4516 branch_compare(const void *l1, const void *l2)
4517 {
4518 const struct branch *branch1 = ((const struct line *) l1)->data;
4519 const struct branch *branch2 = ((const struct line *) l2)->data;
4520
4521 switch (get_sort_field(branch_sort_state)) {
4522 case ORDERBY_DATE:
4523 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4524
4525 case ORDERBY_AUTHOR:
4526 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4527
4528 case ORDERBY_NAME:
4529 default:
4530 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4531 }
4532 }
4533
4534 static bool
4535 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4536 {
4537 struct branch *branch = line->data;
4538 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4539
4540 if (opt_date && draw_date(view, &branch->time))
4541 return TRUE;
4542
4543 if (opt_author && draw_author(view, branch->author))
4544 return TRUE;
4545
4546 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4547 return TRUE;
4548 }
4549
4550 static enum request
4551 branch_request(struct view *view, enum request request, struct line *line)
4552 {
4553 struct branch *branch = line->data;
4554
4555 switch (request) {
4556 case REQ_REFRESH:
4557 load_refs();
4558 open_view(view, REQ_VIEW_BRANCH, OPEN_REFRESH);
4559 return REQ_NONE;
4560
4561 case REQ_TOGGLE_SORT_FIELD:
4562 case REQ_TOGGLE_SORT_ORDER:
4563 sort_view(view, request, &branch_sort_state, branch_compare);
4564 return REQ_NONE;
4565
4566 case REQ_ENTER:
4567 {
4568 const struct ref *ref = branch->ref;
4569 const char *all_branches_argv[] = {
4570 "git", "log", "--no-color", "--pretty=raw", "--parents",
4571 "--topo-order",
4572 ref == &branch_all ? "--all" : ref->name, NULL
4573 };
4574 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4575
4576 if (!prepare_update(main_view, all_branches_argv, NULL))
4577 report("Failed to load view of all branches");
4578 else
4579 open_view(view, REQ_VIEW_MAIN, OPEN_PREPARED | OPEN_SPLIT);
4580 return REQ_NONE;
4581 }
4582 default:
4583 return request;
4584 }
4585 }
4586
4587 static bool
4588 branch_read(struct view *view, char *line)
4589 {
4590 static char id[SIZEOF_REV];
4591 struct branch *reference;
4592 size_t i;
4593
4594 if (!line)
4595 return TRUE;
4596
4597 switch (get_line_type(line)) {
4598 case LINE_COMMIT:
4599 string_copy_rev(id, line + STRING_SIZE("commit "));
4600 return TRUE;
4601
4602 case LINE_AUTHOR:
4603 for (i = 0, reference = NULL; i < view->lines; i++) {
4604 struct branch *branch = view->line[i].data;
4605
4606 if (strcmp(branch->ref->id, id))
4607 continue;
4608
4609 view->line[i].dirty = TRUE;
4610 if (reference) {
4611 branch->author = reference->author;
4612 branch->time = reference->time;
4613 continue;
4614 }
4615
4616 parse_author_line(line + STRING_SIZE("author "),
4617 &branch->author, &branch->time);
4618 reference = branch;
4619 }
4620 return TRUE;
4621
4622 default:
4623 return TRUE;
4624 }
4625
4626 }
4627
4628 static bool
4629 branch_open_visitor(void *data, const struct ref *ref)
4630 {
4631 struct view *view = data;
4632 struct branch *branch;
4633
4634 if (ref->tag || ref->ltag || ref->remote)
4635 return TRUE;
4636
4637 branch = calloc(1, sizeof(*branch));
4638 if (!branch)
4639 return FALSE;
4640
4641 branch->ref = ref;
4642 return !!add_line_data(view, branch, LINE_DEFAULT);
4643 }
4644
4645 static bool
4646 branch_open(struct view *view, enum open_flags flags)
4647 {
4648 const char *branch_log[] = {
4649 "git", "log", "--no-color", "--pretty=raw",
4650 "--simplify-by-decoration", "--all", NULL
4651 };
4652
4653 if (!start_update(view, branch_log, NULL)) {
4654 report("Failed to load branch data");
4655 return TRUE;
4656 }
4657
4658 setup_update(view, view->id);
4659 branch_open_visitor(view, &branch_all);
4660 foreach_ref(branch_open_visitor, view);
4661 view->p_restore = TRUE;
4662
4663 return TRUE;
4664 }
4665
4666 static bool
4667 branch_grep(struct view *view, struct line *line)
4668 {
4669 struct branch *branch = line->data;
4670 const char *text[] = {
4671 branch->ref->name,
4672 branch->author,
4673 NULL
4674 };
4675
4676 return grep_text(view, text);
4677 }
4678
4679 static void
4680 branch_select(struct view *view, struct line *line)
4681 {
4682 struct branch *branch = line->data;
4683
4684 string_copy_rev(view->ref, branch->ref->id);
4685 string_copy_rev(ref_commit, branch->ref->id);
4686 string_copy_rev(ref_head, branch->ref->id);
4687 string_copy_rev(ref_branch, branch->ref->name);
4688 }
4689
4690 static struct view_ops branch_ops = {
4691 "branch",
4692 NULL,
4693 branch_open,
4694 branch_read,
4695 branch_draw,
4696 branch_request,
4697 branch_grep,
4698 branch_select,
4699 };
4700
4701 /*
4702 * Status backend
4703 */
4704
4705 struct status {
4706 char status;
4707 struct {
4708 mode_t mode;
4709 char rev[SIZEOF_REV];
4710 char name[SIZEOF_STR];
4711 } old;
4712 struct {
4713 mode_t mode;
4714 char rev[SIZEOF_REV];
4715 char name[SIZEOF_STR];
4716 } new;
4717 };
4718
4719 static char status_onbranch[SIZEOF_STR];
4720 static struct status stage_status;
4721 static enum line_type stage_line_type;
4722 static size_t stage_chunks;
4723 static int *stage_chunk;
4724
4725 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4726
4727 /* This should work even for the "On branch" line. */
4728 static inline bool
4729 status_has_none(struct view *view, struct line *line)
4730 {
4731 return line < view->line + view->lines && !line[1].data;
4732 }
4733
4734 /* Get fields from the diff line:
4735 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4736 */
4737 static inline bool
4738 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4739 {
4740 const char *old_mode = buf + 1;
4741 const char *new_mode = buf + 8;
4742 const char *old_rev = buf + 15;
4743 const char *new_rev = buf + 56;
4744 const char *status = buf + 97;
4745
4746 if (bufsize < 98 ||
4747 old_mode[-1] != ':' ||
4748 new_mode[-1] != ' ' ||
4749 old_rev[-1] != ' ' ||
4750 new_rev[-1] != ' ' ||
4751 status[-1] != ' ')
4752 return FALSE;
4753
4754 file->status = *status;
4755
4756 string_copy_rev(file->old.rev, old_rev);
4757 string_copy_rev(file->new.rev, new_rev);
4758
4759 file->old.mode = strtoul(old_mode, NULL, 8);
4760 file->new.mode = strtoul(new_mode, NULL, 8);
4761
4762 file->old.name[0] = file->new.name[0] = 0;
4763
4764 return TRUE;
4765 }
4766
4767 static bool
4768 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4769 {
4770 struct status *unmerged = NULL;
4771 char *buf;
4772 struct io io;
4773
4774 if (!io_run(&io, IO_RD, opt_cdup, argv))
4775 return FALSE;
4776
4777 add_line_data(view, NULL, type);
4778
4779 while ((buf = io_get(&io, 0, TRUE))) {
4780 struct status *file = unmerged;
4781
4782 if (!file) {
4783 file = calloc(1, sizeof(*file));
4784 if (!file || !add_line_data(view, file, type))
4785 goto error_out;
4786 }
4787
4788 /* Parse diff info part. */
4789 if (status) {
4790 file->status = status;
4791 if (status == 'A')
4792 string_copy(file->old.rev, NULL_ID);
4793
4794 } else if (!file->status || file == unmerged) {
4795 if (!status_get_diff(file, buf, strlen(buf)))
4796 goto error_out;
4797
4798 buf = io_get(&io, 0, TRUE);
4799 if (!buf)
4800 break;
4801
4802 /* Collapse all modified entries that follow an
4803 * associated unmerged entry. */
4804 if (unmerged == file) {
4805 unmerged->status = 'U';
4806 unmerged = NULL;
4807 } else if (file->status == 'U') {
4808 unmerged = file;
4809 }
4810 }
4811
4812 /* Grab the old name for rename/copy. */
4813 if (!*file->old.name &&
4814 (file->status == 'R' || file->status == 'C')) {
4815 string_ncopy(file->old.name, buf, strlen(buf));
4816
4817 buf = io_get(&io, 0, TRUE);
4818 if (!buf)
4819 break;
4820 }
4821
4822 /* git-ls-files just delivers a NUL separated list of
4823 * file names similar to the second half of the
4824 * git-diff-* output. */
4825 string_ncopy(file->new.name, buf, strlen(buf));
4826 if (!*file->old.name)
4827 string_copy(file->old.name, file->new.name);
4828 file = NULL;
4829 }
4830
4831 if (io_error(&io)) {
4832 error_out:
4833 io_done(&io);
4834 return FALSE;
4835 }
4836
4837 if (!view->line[view->lines - 1].data)
4838 add_line_data(view, NULL, LINE_STAT_NONE);
4839
4840 io_done(&io);
4841 return TRUE;
4842 }
4843
4844 /* Don't show unmerged entries in the staged section. */
4845 static const char *status_diff_index_argv[] = {
4846 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4847 "--cached", "-M", "HEAD", NULL
4848 };
4849
4850 static const char *status_diff_files_argv[] = {
4851 "git", "diff-files", "-z", NULL
4852 };
4853
4854 static const char *status_list_other_argv[] = {
4855 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4856 };
4857
4858 static const char *status_list_no_head_argv[] = {
4859 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4860 };
4861
4862 static const char *update_index_argv[] = {
4863 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4864 };
4865
4866 /* Restore the previous line number to stay in the context or select a
4867 * line with something that can be updated. */
4868 static void
4869 status_restore(struct view *view)
4870 {
4871 if (view->p_lineno >= view->lines)
4872 view->p_lineno = view->lines - 1;
4873 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4874 view->p_lineno++;
4875 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4876 view->p_lineno--;
4877
4878 /* If the above fails, always skip the "On branch" line. */
4879 if (view->p_lineno < view->lines)
4880 view->lineno = view->p_lineno;
4881 else
4882 view->lineno = 1;
4883
4884 if (view->lineno < view->offset)
4885 view->offset = view->lineno;
4886 else if (view->offset + view->height <= view->lineno)
4887 view->offset = view->lineno - view->height + 1;
4888
4889 view->p_restore = FALSE;
4890 }
4891
4892 static void
4893 status_update_onbranch(void)
4894 {
4895 static const char *paths[][2] = {
4896 { "rebase-apply/rebasing", "Rebasing" },
4897 { "rebase-apply/applying", "Applying mailbox" },
4898 { "rebase-apply/", "Rebasing mailbox" },
4899 { "rebase-merge/interactive", "Interactive rebase" },
4900 { "rebase-merge/", "Rebase merge" },
4901 { "MERGE_HEAD", "Merging" },
4902 { "BISECT_LOG", "Bisecting" },
4903 { "HEAD", "On branch" },
4904 };
4905 char buf[SIZEOF_STR];
4906 struct stat stat;
4907 int i;
4908
4909 if (is_initial_commit()) {
4910 string_copy(status_onbranch, "Initial commit");
4911 return;
4912 }
4913
4914 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4915 char *head = opt_head;
4916
4917 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4918 lstat(buf, &stat) < 0)
4919 continue;
4920
4921 if (!*opt_head) {
4922 struct io io;
4923
4924 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4925 io_read_buf(&io, buf, sizeof(buf))) {
4926 head = buf;
4927 if (!prefixcmp(head, "refs/heads/"))
4928 head += STRING_SIZE("refs/heads/");
4929 }
4930 }
4931
4932 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4933 string_copy(status_onbranch, opt_head);
4934 return;
4935 }
4936
4937 string_copy(status_onbranch, "Not currently on any branch");
4938 }
4939
4940 /* First parse staged info using git-diff-index(1), then parse unstaged
4941 * info using git-diff-files(1), and finally untracked files using
4942 * git-ls-files(1). */
4943 static bool
4944 status_open(struct view *view, enum open_flags flags)
4945 {
4946 reset_view(view);
4947
4948 add_line_data(view, NULL, LINE_STAT_HEAD);
4949 status_update_onbranch();
4950
4951 io_run_bg(update_index_argv);
4952
4953 if (is_initial_commit()) {
4954 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4955 return FALSE;
4956 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4957 return FALSE;
4958 }
4959
4960 if (!opt_untracked_dirs_content)
4961 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
4962
4963 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4964 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4965 return FALSE;
4966
4967 /* Restore the exact position or use the specialized restore
4968 * mode? */
4969 if (!view->p_restore)
4970 status_restore(view);
4971 return TRUE;
4972 }
4973
4974 static bool
4975 status_draw(struct view *view, struct line *line, unsigned int lineno)
4976 {
4977 struct status *status = line->data;
4978 enum line_type type;
4979 const char *text;
4980
4981 if (!status) {
4982 switch (line->type) {
4983 case LINE_STAT_STAGED:
4984 type = LINE_STAT_SECTION;
4985 text = "Changes to be committed:";
4986 break;
4987
4988 case LINE_STAT_UNSTAGED:
4989 type = LINE_STAT_SECTION;
4990 text = "Changed but not updated:";
4991 break;
4992
4993 case LINE_STAT_UNTRACKED:
4994 type = LINE_STAT_SECTION;
4995 text = "Untracked files:";
4996 break;
4997
4998 case LINE_STAT_NONE:
4999 type = LINE_DEFAULT;
5000 text = " (no files)";
5001 break;
5002
5003 case LINE_STAT_HEAD:
5004 type = LINE_STAT_HEAD;
5005 text = status_onbranch;
5006 break;
5007
5008 default:
5009 return FALSE;
5010 }
5011 } else {
5012 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5013
5014 buf[0] = status->status;
5015 if (draw_text(view, line->type, buf))
5016 return TRUE;
5017 type = LINE_DEFAULT;
5018 text = status->new.name;
5019 }
5020
5021 draw_text(view, type, text);
5022 return TRUE;
5023 }
5024
5025 static enum request
5026 status_load_error(struct view *view, struct view *stage, const char *path)
5027 {
5028 if (displayed_views() == 2 || display[current_view] != view)
5029 maximize_view(view);
5030 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
5031 return REQ_NONE;
5032 }
5033
5034 static enum request
5035 status_enter(struct view *view, struct line *line)
5036 {
5037 struct status *status = line->data;
5038 const char *oldpath = status ? status->old.name : NULL;
5039 /* Diffs for unmerged entries are empty when passing the new
5040 * path, so leave it empty. */
5041 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5042 const char *info;
5043 enum open_flags split;
5044 struct view *stage = VIEW(REQ_VIEW_STAGE);
5045
5046 if (line->type == LINE_STAT_NONE ||
5047 (!status && line[1].type == LINE_STAT_NONE)) {
5048 report("No file to diff");
5049 return REQ_NONE;
5050 }
5051
5052 switch (line->type) {
5053 case LINE_STAT_STAGED:
5054 if (is_initial_commit()) {
5055 const char *no_head_diff_argv[] = {
5056 "git", "diff", "--no-color", "--patch-with-stat",
5057 "--", "/dev/null", newpath, NULL
5058 };
5059
5060 if (!prepare_update(stage, no_head_diff_argv, opt_cdup))
5061 return status_load_error(view, stage, newpath);
5062 } else {
5063 const char *index_show_argv[] = {
5064 "git", "diff-index", "--root", "--patch-with-stat",
5065 "-C", "-M", "--cached", "HEAD", "--",
5066 oldpath, newpath, NULL
5067 };
5068
5069 if (!prepare_update(stage, index_show_argv, opt_cdup))
5070 return status_load_error(view, stage, newpath);
5071 }
5072
5073 if (status)
5074 info = "Staged changes to %s";
5075 else
5076 info = "Staged changes";
5077 break;
5078
5079 case LINE_STAT_UNSTAGED:
5080 {
5081 const char *files_show_argv[] = {
5082 "git", "diff-files", "--root", "--patch-with-stat",
5083 "-C", "-M", "--", oldpath, newpath, NULL
5084 };
5085
5086 if (!prepare_update(stage, files_show_argv, opt_cdup))
5087 return status_load_error(view, stage, newpath);
5088 if (status)
5089 info = "Unstaged changes to %s";
5090 else
5091 info = "Unstaged changes";
5092 break;
5093 }
5094 case LINE_STAT_UNTRACKED:
5095 if (!newpath) {
5096 report("No file to show");
5097 return REQ_NONE;
5098 }
5099
5100 if (!suffixcmp(status->new.name, -1, "/")) {
5101 report("Cannot display a directory");
5102 return REQ_NONE;
5103 }
5104
5105 if (!prepare_update_file(stage, newpath))
5106 return status_load_error(view, stage, newpath);
5107 info = "Untracked file %s";
5108 break;
5109
5110 case LINE_STAT_HEAD:
5111 return REQ_NONE;
5112
5113 default:
5114 die("line type %d not handled in switch", line->type);
5115 }
5116
5117 split = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5118 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5119 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5120 if (status) {
5121 stage_status = *status;
5122 } else {
5123 memset(&stage_status, 0, sizeof(stage_status));
5124 }
5125
5126 stage_line_type = line->type;
5127 stage_chunks = 0;
5128 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5129 }
5130
5131 return REQ_NONE;
5132 }
5133
5134 static bool
5135 status_exists(struct status *status, enum line_type type)
5136 {
5137 struct view *view = VIEW(REQ_VIEW_STATUS);
5138 unsigned long lineno;
5139
5140 for (lineno = 0; lineno < view->lines; lineno++) {
5141 struct line *line = &view->line[lineno];
5142 struct status *pos = line->data;
5143
5144 if (line->type != type)
5145 continue;
5146 if (!pos && (!status || !status->status) && line[1].data) {
5147 select_view_line(view, lineno);
5148 return TRUE;
5149 }
5150 if (pos && !strcmp(status->new.name, pos->new.name)) {
5151 select_view_line(view, lineno);
5152 return TRUE;
5153 }
5154 }
5155
5156 return FALSE;
5157 }
5158
5159
5160 static bool
5161 status_update_prepare(struct io *io, enum line_type type)
5162 {
5163 const char *staged_argv[] = {
5164 "git", "update-index", "-z", "--index-info", NULL
5165 };
5166 const char *others_argv[] = {
5167 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5168 };
5169
5170 switch (type) {
5171 case LINE_STAT_STAGED:
5172 return io_run(io, IO_WR, opt_cdup, staged_argv);
5173
5174 case LINE_STAT_UNSTAGED:
5175 case LINE_STAT_UNTRACKED:
5176 return io_run(io, IO_WR, opt_cdup, others_argv);
5177
5178 default:
5179 die("line type %d not handled in switch", type);
5180 return FALSE;
5181 }
5182 }
5183
5184 static bool
5185 status_update_write(struct io *io, struct status *status, enum line_type type)
5186 {
5187 char buf[SIZEOF_STR];
5188 size_t bufsize = 0;
5189
5190 switch (type) {
5191 case LINE_STAT_STAGED:
5192 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5193 status->old.mode,
5194 status->old.rev,
5195 status->old.name, 0))
5196 return FALSE;
5197 break;
5198
5199 case LINE_STAT_UNSTAGED:
5200 case LINE_STAT_UNTRACKED:
5201 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5202 return FALSE;
5203 break;
5204
5205 default:
5206 die("line type %d not handled in switch", type);
5207 }
5208
5209 return io_write(io, buf, bufsize);
5210 }
5211
5212 static bool
5213 status_update_file(struct status *status, enum line_type type)
5214 {
5215 struct io io;
5216 bool result;
5217
5218 if (!status_update_prepare(&io, type))
5219 return FALSE;
5220
5221 result = status_update_write(&io, status, type);
5222 return io_done(&io) && result;
5223 }
5224
5225 static bool
5226 status_update_files(struct view *view, struct line *line)
5227 {
5228 char buf[sizeof(view->ref)];
5229 struct io io;
5230 bool result = TRUE;
5231 struct line *pos = view->line + view->lines;
5232 int files = 0;
5233 int file, done;
5234 int cursor_y = -1, cursor_x = -1;
5235
5236 if (!status_update_prepare(&io, line->type))
5237 return FALSE;
5238
5239 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5240 files++;
5241
5242 string_copy(buf, view->ref);
5243 getsyx(cursor_y, cursor_x);
5244 for (file = 0, done = 5; result && file < files; line++, file++) {
5245 int almost_done = file * 100 / files;
5246
5247 if (almost_done > done) {
5248 done = almost_done;
5249 string_format(view->ref, "updating file %u of %u (%d%% done)",
5250 file, files, done);
5251 update_view_title(view);
5252 setsyx(cursor_y, cursor_x);
5253 doupdate();
5254 }
5255 result = status_update_write(&io, line->data, line->type);
5256 }
5257 string_copy(view->ref, buf);
5258
5259 return io_done(&io) && result;
5260 }
5261
5262 static bool
5263 status_update(struct view *view)
5264 {
5265 struct line *line = &view->line[view->lineno];
5266
5267 assert(view->lines);
5268
5269 if (!line->data) {
5270 /* This should work even for the "On branch" line. */
5271 if (line < view->line + view->lines && !line[1].data) {
5272 report("Nothing to update");
5273 return FALSE;
5274 }
5275
5276 if (!status_update_files(view, line + 1)) {
5277 report("Failed to update file status");
5278 return FALSE;
5279 }
5280
5281 } else if (!status_update_file(line->data, line->type)) {
5282 report("Failed to update file status");
5283 return FALSE;
5284 }
5285
5286 return TRUE;
5287 }
5288
5289 static bool
5290 status_revert(struct status *status, enum line_type type, bool has_none)
5291 {
5292 if (!status || type != LINE_STAT_UNSTAGED) {
5293 if (type == LINE_STAT_STAGED) {
5294 report("Cannot revert changes to staged files");
5295 } else if (type == LINE_STAT_UNTRACKED) {
5296 report("Cannot revert changes to untracked files");
5297 } else if (has_none) {
5298 report("Nothing to revert");
5299 } else {
5300 report("Cannot revert changes to multiple files");
5301 }
5302
5303 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5304 char mode[10] = "100644";
5305 const char *reset_argv[] = {
5306 "git", "update-index", "--cacheinfo", mode,
5307 status->old.rev, status->old.name, NULL
5308 };
5309 const char *checkout_argv[] = {
5310 "git", "checkout", "--", status->old.name, NULL
5311 };
5312
5313 if (status->status == 'U') {
5314 string_format(mode, "%5o", status->old.mode);
5315
5316 if (status->old.mode == 0 && status->new.mode == 0) {
5317 reset_argv[2] = "--force-remove";
5318 reset_argv[3] = status->old.name;
5319 reset_argv[4] = NULL;
5320 }
5321
5322 if (!io_run_fg(reset_argv, opt_cdup))
5323 return FALSE;
5324 if (status->old.mode == 0 && status->new.mode == 0)
5325 return TRUE;
5326 }
5327
5328 return io_run_fg(checkout_argv, opt_cdup);
5329 }
5330
5331 return FALSE;
5332 }
5333
5334 static enum request
5335 status_request(struct view *view, enum request request, struct line *line)
5336 {
5337 struct status *status = line->data;
5338
5339 switch (request) {
5340 case REQ_STATUS_UPDATE:
5341 if (!status_update(view))
5342 return REQ_NONE;
5343 break;
5344
5345 case REQ_STATUS_REVERT:
5346 if (!status_revert(status, line->type, status_has_none(view, line)))
5347 return REQ_NONE;
5348 break;
5349
5350 case REQ_STATUS_MERGE:
5351 if (!status || status->status != 'U') {
5352 report("Merging only possible for files with unmerged status ('U').");
5353 return REQ_NONE;
5354 }
5355 open_mergetool(status->new.name);
5356 break;
5357
5358 case REQ_EDIT:
5359 if (!status)
5360 return request;
5361 if (status->status == 'D') {
5362 report("File has been deleted.");
5363 return REQ_NONE;
5364 }
5365
5366 open_editor(status->new.name);
5367 break;
5368
5369 case REQ_VIEW_BLAME:
5370 if (status)
5371 opt_ref[0] = 0;
5372 return request;
5373
5374 case REQ_ENTER:
5375 /* After returning the status view has been split to
5376 * show the stage view. No further reloading is
5377 * necessary. */
5378 return status_enter(view, line);
5379
5380 case REQ_REFRESH:
5381 /* Simply reload the view. */
5382 break;
5383
5384 default:
5385 return request;
5386 }
5387
5388 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
5389
5390 return REQ_NONE;
5391 }
5392
5393 static void
5394 status_select(struct view *view, struct line *line)
5395 {
5396 struct status *status = line->data;
5397 char file[SIZEOF_STR] = "all files";
5398 const char *text;
5399 const char *key;
5400
5401 if (status && !string_format(file, "'%s'", status->new.name))
5402 return;
5403
5404 if (!status && line[1].type == LINE_STAT_NONE)
5405 line++;
5406
5407 switch (line->type) {
5408 case LINE_STAT_STAGED:
5409 text = "Press %s to unstage %s for commit";
5410 break;
5411
5412 case LINE_STAT_UNSTAGED:
5413 text = "Press %s to stage %s for commit";
5414 break;
5415
5416 case LINE_STAT_UNTRACKED:
5417 text = "Press %s to stage %s for addition";
5418 break;
5419
5420 case LINE_STAT_HEAD:
5421 case LINE_STAT_NONE:
5422 text = "Nothing to update";
5423 break;
5424
5425 default:
5426 die("line type %d not handled in switch", line->type);
5427 }
5428
5429 if (status && status->status == 'U') {
5430 text = "Press %s to resolve conflict in %s";
5431 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5432
5433 } else {
5434 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5435 }
5436
5437 string_format(view->ref, text, key, file);
5438 if (status)
5439 string_copy(opt_file, status->new.name);
5440 }
5441
5442 static bool
5443 status_grep(struct view *view, struct line *line)
5444 {
5445 struct status *status = line->data;
5446
5447 if (status) {
5448 const char buf[2] = { status->status, 0 };
5449 const char *text[] = { status->new.name, buf, NULL };
5450
5451 return grep_text(view, text);
5452 }
5453
5454 return FALSE;
5455 }
5456
5457 static struct view_ops status_ops = {
5458 "file",
5459 NULL,
5460 status_open,
5461 NULL,
5462 status_draw,
5463 status_request,
5464 status_grep,
5465 status_select,
5466 };
5467
5468
5469 static bool
5470 stage_diff_write(struct io *io, struct line *line, struct line *end)
5471 {
5472 while (line < end) {
5473 if (!io_write(io, line->data, strlen(line->data)) ||
5474 !io_write(io, "\n", 1))
5475 return FALSE;
5476 line++;
5477 if (line->type == LINE_DIFF_CHUNK ||
5478 line->type == LINE_DIFF_HEADER)
5479 break;
5480 }
5481
5482 return TRUE;
5483 }
5484
5485 static struct line *
5486 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5487 {
5488 for (; view->line < line; line--)
5489 if (line->type == type)
5490 return line;
5491
5492 return NULL;
5493 }
5494
5495 static bool
5496 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5497 {
5498 const char *apply_argv[SIZEOF_ARG] = {
5499 "git", "apply", "--whitespace=nowarn", NULL
5500 };
5501 struct line *diff_hdr;
5502 struct io io;
5503 int argc = 3;
5504
5505 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5506 if (!diff_hdr)
5507 return FALSE;
5508
5509 if (!revert)
5510 apply_argv[argc++] = "--cached";
5511 if (revert || stage_line_type == LINE_STAT_STAGED)
5512 apply_argv[argc++] = "-R";
5513 apply_argv[argc++] = "-";
5514 apply_argv[argc++] = NULL;
5515 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5516 return FALSE;
5517
5518 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5519 !stage_diff_write(&io, chunk, view->line + view->lines))
5520 chunk = NULL;
5521
5522 io_done(&io);
5523 io_run_bg(update_index_argv);
5524
5525 return chunk ? TRUE : FALSE;
5526 }
5527
5528 static bool
5529 stage_update(struct view *view, struct line *line)
5530 {
5531 struct line *chunk = NULL;
5532
5533 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5534 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5535
5536 if (chunk) {
5537 if (!stage_apply_chunk(view, chunk, FALSE)) {
5538 report("Failed to apply chunk");
5539 return FALSE;
5540 }
5541
5542 } else if (!stage_status.status) {
5543 view = VIEW(REQ_VIEW_STATUS);
5544
5545 for (line = view->line; line < view->line + view->lines; line++)
5546 if (line->type == stage_line_type)
5547 break;
5548
5549 if (!status_update_files(view, line + 1)) {
5550 report("Failed to update files");
5551 return FALSE;
5552 }
5553
5554 } else if (!status_update_file(&stage_status, stage_line_type)) {
5555 report("Failed to update file");
5556 return FALSE;
5557 }
5558
5559 return TRUE;
5560 }
5561
5562 static bool
5563 stage_revert(struct view *view, struct line *line)
5564 {
5565 struct line *chunk = NULL;
5566
5567 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5568 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5569
5570 if (chunk) {
5571 if (!prompt_yesno("Are you sure you want to revert changes?"))
5572 return FALSE;
5573
5574 if (!stage_apply_chunk(view, chunk, TRUE)) {
5575 report("Failed to revert chunk");
5576 return FALSE;
5577 }
5578 return TRUE;
5579
5580 } else {
5581 return status_revert(stage_status.status ? &stage_status : NULL,
5582 stage_line_type, FALSE);
5583 }
5584 }
5585
5586
5587 static void
5588 stage_next(struct view *view, struct line *line)
5589 {
5590 int i;
5591
5592 if (!stage_chunks) {
5593 for (line = view->line; line < view->line + view->lines; line++) {
5594 if (line->type != LINE_DIFF_CHUNK)
5595 continue;
5596
5597 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5598 report("Allocation failure");
5599 return;
5600 }
5601
5602 stage_chunk[stage_chunks++] = line - view->line;
5603 }
5604 }
5605
5606 for (i = 0; i < stage_chunks; i++) {
5607 if (stage_chunk[i] > view->lineno) {
5608 do_scroll_view(view, stage_chunk[i] - view->lineno);
5609 report("Chunk %d of %d", i + 1, stage_chunks);
5610 return;
5611 }
5612 }
5613
5614 report("No next chunk found");
5615 }
5616
5617 static enum request
5618 stage_request(struct view *view, enum request request, struct line *line)
5619 {
5620 switch (request) {
5621 case REQ_STATUS_UPDATE:
5622 if (!stage_update(view, line))
5623 return REQ_NONE;
5624 break;
5625
5626 case REQ_STATUS_REVERT:
5627 if (!stage_revert(view, line))
5628 return REQ_NONE;
5629 break;
5630
5631 case REQ_STAGE_NEXT:
5632 if (stage_line_type == LINE_STAT_UNTRACKED) {
5633 report("File is untracked; press %s to add",
5634 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5635 return REQ_NONE;
5636 }
5637 stage_next(view, line);
5638 return REQ_NONE;
5639
5640 case REQ_EDIT:
5641 if (!stage_status.new.name[0])
5642 return request;
5643 if (stage_status.status == 'D') {
5644 report("File has been deleted.");
5645 return REQ_NONE;
5646 }
5647
5648 open_editor(stage_status.new.name);
5649 break;
5650
5651 case REQ_REFRESH:
5652 /* Reload everything ... */
5653 break;
5654
5655 case REQ_VIEW_BLAME:
5656 if (stage_status.new.name[0]) {
5657 string_copy(opt_file, stage_status.new.name);
5658 opt_ref[0] = 0;
5659 }
5660 return request;
5661
5662 case REQ_ENTER:
5663 return pager_request(view, request, line);
5664
5665 default:
5666 return request;
5667 }
5668
5669 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5670 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
5671
5672 /* Check whether the staged entry still exists, and close the
5673 * stage view if it doesn't. */
5674 if (!status_exists(&stage_status, stage_line_type)) {
5675 status_restore(VIEW(REQ_VIEW_STATUS));
5676 return REQ_VIEW_CLOSE;
5677 }
5678
5679 if (stage_line_type == LINE_STAT_UNTRACKED) {
5680 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5681 report("Cannot display a directory");
5682 return REQ_NONE;
5683 }
5684
5685 if (!prepare_update_file(view, stage_status.new.name)) {
5686 report("Failed to open file: %s", strerror(errno));
5687 return REQ_NONE;
5688 }
5689 }
5690 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5691
5692 return REQ_NONE;
5693 }
5694
5695 static struct view_ops stage_ops = {
5696 "line",
5697 NULL,
5698 view_open,
5699 pager_read,
5700 pager_draw,
5701 stage_request,
5702 pager_grep,
5703 pager_select,
5704 };
5705
5706
5707 /*
5708 * Revision graph
5709 */
5710
5711 static const enum line_type graph_colors[] = {
5712 LINE_GRAPH_LINE_0,
5713 LINE_GRAPH_LINE_1,
5714 LINE_GRAPH_LINE_2,
5715 LINE_GRAPH_LINE_3,
5716 LINE_GRAPH_LINE_4,
5717 LINE_GRAPH_LINE_5,
5718 LINE_GRAPH_LINE_6,
5719 };
5720
5721 static enum line_type get_graph_color(struct graph_symbol *symbol)
5722 {
5723 if (symbol->commit)
5724 return LINE_GRAPH_COMMIT;
5725 assert(symbol->color < ARRAY_SIZE(graph_colors));
5726 return graph_colors[symbol->color];
5727 }
5728
5729 static bool
5730 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5731 {
5732 const char *chars = graph_symbol_to_utf8(symbol);
5733
5734 return draw_text(view, color, chars + !!first);
5735 }
5736
5737 static bool
5738 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5739 {
5740 const char *chars = graph_symbol_to_ascii(symbol);
5741
5742 return draw_text(view, color, chars + !!first);
5743 }
5744
5745 static bool
5746 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5747 {
5748 const chtype *chars = graph_symbol_to_chtype(symbol);
5749
5750 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5751 }
5752
5753 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5754
5755 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5756 {
5757 static const draw_graph_fn fns[] = {
5758 draw_graph_ascii,
5759 draw_graph_chtype,
5760 draw_graph_utf8
5761 };
5762 draw_graph_fn fn = fns[opt_line_graphics];
5763 int i;
5764
5765 for (i = 0; i < canvas->size; i++) {
5766 struct graph_symbol *symbol = &canvas->symbols[i];
5767 enum line_type color = get_graph_color(symbol);
5768
5769 if (fn(view, symbol, color, i == 0))
5770 return TRUE;
5771 }
5772
5773 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5774 }
5775
5776 /*
5777 * Main view backend
5778 */
5779
5780 struct commit {
5781 char id[SIZEOF_REV]; /* SHA1 ID. */
5782 char title[128]; /* First line of the commit message. */
5783 const char *author; /* Author of the commit. */
5784 struct time time; /* Date from the author ident. */
5785 struct ref_list *refs; /* Repository references. */
5786 struct graph_canvas graph; /* Ancestry chain graphics. */
5787 };
5788
5789 static const char *main_argv[SIZEOF_ARG] = {
5790 "git", "log", "--no-color", "--pretty=raw", "--parents",
5791 "--topo-order", "%(diffargs)", "%(revargs)",
5792 "--", "%(fileargs)", NULL
5793 };
5794
5795 static bool
5796 main_draw(struct view *view, struct line *line, unsigned int lineno)
5797 {
5798 struct commit *commit = line->data;
5799
5800 if (!commit->author)
5801 return FALSE;
5802
5803 if (opt_date && draw_date(view, &commit->time))
5804 return TRUE;
5805
5806 if (opt_author && draw_author(view, commit->author))
5807 return TRUE;
5808
5809 if (opt_rev_graph && draw_graph(view, &commit->graph))
5810 return TRUE;
5811
5812 if (opt_show_refs && commit->refs) {
5813 size_t i;
5814
5815 for (i = 0; i < commit->refs->size; i++) {
5816 struct ref *ref = commit->refs->refs[i];
5817 enum line_type type;
5818
5819 if (ref->head)
5820 type = LINE_MAIN_HEAD;
5821 else if (ref->ltag)
5822 type = LINE_MAIN_LOCAL_TAG;
5823 else if (ref->tag)
5824 type = LINE_MAIN_TAG;
5825 else if (ref->tracked)
5826 type = LINE_MAIN_TRACKED;
5827 else if (ref->remote)
5828 type = LINE_MAIN_REMOTE;
5829 else
5830 type = LINE_MAIN_REF;
5831
5832 if (draw_text(view, type, "[") ||
5833 draw_text(view, type, ref->name) ||
5834 draw_text(view, type, "]"))
5835 return TRUE;
5836
5837 if (draw_text(view, LINE_DEFAULT, " "))
5838 return TRUE;
5839 }
5840 }
5841
5842 draw_text(view, LINE_DEFAULT, commit->title);
5843 return TRUE;
5844 }
5845
5846 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5847 static bool
5848 main_read(struct view *view, char *line)
5849 {
5850 static struct graph graph;
5851 enum line_type type;
5852 struct commit *commit;
5853
5854 if (!line) {
5855 if (!view->lines && !view->prev)
5856 die("No revisions match the given arguments.");
5857 if (view->lines > 0) {
5858 commit = view->line[view->lines - 1].data;
5859 view->line[view->lines - 1].dirty = 1;
5860 if (!commit->author) {
5861 view->lines--;
5862 free(commit);
5863 }
5864 }
5865
5866 done_graph(&graph);
5867 return TRUE;
5868 }
5869
5870 type = get_line_type(line);
5871 if (type == LINE_COMMIT) {
5872 bool is_boundary;
5873
5874 commit = calloc(1, sizeof(struct commit));
5875 if (!commit)
5876 return FALSE;
5877
5878 line += STRING_SIZE("commit ");
5879 is_boundary = *line == '-';
5880 if (is_boundary)
5881 line++;
5882
5883 string_copy_rev(commit->id, line);
5884 commit->refs = get_ref_list(commit->id);
5885 add_line_data(view, commit, LINE_MAIN_COMMIT);
5886 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5887 return TRUE;
5888 }
5889
5890 if (!view->lines)
5891 return TRUE;
5892 commit = view->line[view->lines - 1].data;
5893
5894 switch (type) {
5895 case LINE_PARENT:
5896 if (!graph.has_parents)
5897 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5898 break;
5899
5900 case LINE_AUTHOR:
5901 parse_author_line(line + STRING_SIZE("author "),
5902 &commit->author, &commit->time);
5903 graph_render_parents(&graph);
5904 break;
5905
5906 default:
5907 /* Fill in the commit title if it has not already been set. */
5908 if (commit->title[0])
5909 break;
5910
5911 /* Require titles to start with a non-space character at the
5912 * offset used by git log. */
5913 if (strncmp(line, " ", 4))
5914 break;
5915 line += 4;
5916 /* Well, if the title starts with a whitespace character,
5917 * try to be forgiving. Otherwise we end up with no title. */
5918 while (isspace(*line))
5919 line++;
5920 if (*line == '\0')
5921 break;
5922 /* FIXME: More graceful handling of titles; append "..." to
5923 * shortened titles, etc. */
5924
5925 string_expand(commit->title, sizeof(commit->title), line, 1);
5926 view->line[view->lines - 1].dirty = 1;
5927 }
5928
5929 return TRUE;
5930 }
5931
5932 static enum request
5933 main_request(struct view *view, enum request request, struct line *line)
5934 {
5935 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5936
5937 switch (request) {
5938 case REQ_ENTER:
5939 if (view_is_displayed(view) && display[0] != view)
5940 maximize_view(view);
5941 open_view(view, REQ_VIEW_DIFF, flags);
5942 break;
5943 case REQ_REFRESH:
5944 load_refs();
5945 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5946 break;
5947 default:
5948 return request;
5949 }
5950
5951 return REQ_NONE;
5952 }
5953
5954 static bool
5955 grep_refs(struct ref_list *list, regex_t *regex)
5956 {
5957 regmatch_t pmatch;
5958 size_t i;
5959
5960 if (!opt_show_refs || !list)
5961 return FALSE;
5962
5963 for (i = 0; i < list->size; i++) {
5964 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5965 return TRUE;
5966 }
5967
5968 return FALSE;
5969 }
5970
5971 static bool
5972 main_grep(struct view *view, struct line *line)
5973 {
5974 struct commit *commit = line->data;
5975 const char *text[] = {
5976 commit->title,
5977 opt_author ? commit->author : "",
5978 mkdate(&commit->time, opt_date),
5979 NULL
5980 };
5981
5982 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5983 }
5984
5985 static void
5986 main_select(struct view *view, struct line *line)
5987 {
5988 struct commit *commit = line->data;
5989
5990 string_copy_rev(view->ref, commit->id);
5991 string_copy_rev(ref_commit, view->ref);
5992 }
5993
5994 static struct view_ops main_ops = {
5995 "commit",
5996 main_argv,
5997 view_open,
5998 main_read,
5999 main_draw,
6000 main_request,
6001 main_grep,
6002 main_select,
6003 };
6004
6005
6006 /*
6007 * Status management
6008 */
6009
6010 /* Whether or not the curses interface has been initialized. */
6011 static bool cursed = FALSE;
6012
6013 /* Terminal hacks and workarounds. */
6014 static bool use_scroll_redrawwin;
6015 static bool use_scroll_status_wclear;
6016
6017 /* The status window is used for polling keystrokes. */
6018 static WINDOW *status_win;
6019
6020 /* Reading from the prompt? */
6021 static bool input_mode = FALSE;
6022
6023 static bool status_empty = FALSE;
6024
6025 /* Update status and title window. */
6026 static void
6027 report(const char *msg, ...)
6028 {
6029 struct view *view = display[current_view];
6030
6031 if (input_mode)
6032 return;
6033
6034 if (!view) {
6035 char buf[SIZEOF_STR];
6036 va_list args;
6037
6038 va_start(args, msg);
6039 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6040 buf[sizeof(buf) - 1] = 0;
6041 buf[sizeof(buf) - 2] = '.';
6042 buf[sizeof(buf) - 3] = '.';
6043 buf[sizeof(buf) - 4] = '.';
6044 }
6045 va_end(args);
6046 die("%s", buf);
6047 }
6048
6049 if (!status_empty || *msg) {
6050 va_list args;
6051
6052 va_start(args, msg);
6053
6054 wmove(status_win, 0, 0);
6055 if (view->has_scrolled && use_scroll_status_wclear)
6056 wclear(status_win);
6057 if (*msg) {
6058 vwprintw(status_win, msg, args);
6059 status_empty = FALSE;
6060 } else {
6061 status_empty = TRUE;
6062 }
6063 wclrtoeol(status_win);
6064 wnoutrefresh(status_win);
6065
6066 va_end(args);
6067 }
6068
6069 update_view_title(view);
6070 }
6071
6072 static void
6073 init_display(void)
6074 {
6075 const char *term;
6076 int x, y;
6077
6078 /* Initialize the curses library */
6079 if (isatty(STDIN_FILENO)) {
6080 cursed = !!initscr();
6081 opt_tty = stdin;
6082 } else {
6083 /* Leave stdin and stdout alone when acting as a pager. */
6084 opt_tty = fopen("/dev/tty", "r+");
6085 if (!opt_tty)
6086 die("Failed to open /dev/tty");
6087 cursed = !!newterm(NULL, opt_tty, opt_tty);
6088 }
6089
6090 if (!cursed)
6091 die("Failed to initialize curses");
6092
6093 nonl(); /* Disable conversion and detect newlines from input. */
6094 cbreak(); /* Take input chars one at a time, no wait for \n */
6095 noecho(); /* Don't echo input */
6096 leaveok(stdscr, FALSE);
6097
6098 if (has_colors())
6099 init_colors();
6100
6101 getmaxyx(stdscr, y, x);
6102 status_win = newwin(1, x, y - 1, 0);
6103 if (!status_win)
6104 die("Failed to create status window");
6105
6106 /* Enable keyboard mapping */
6107 keypad(status_win, TRUE);
6108 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6109
6110 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6111 set_tabsize(opt_tab_size);
6112 #else
6113 TABSIZE = opt_tab_size;
6114 #endif
6115
6116 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6117 if (term && !strcmp(term, "gnome-terminal")) {
6118 /* In the gnome-terminal-emulator, the message from
6119 * scrolling up one line when impossible followed by
6120 * scrolling down one line causes corruption of the
6121 * status line. This is fixed by calling wclear. */
6122 use_scroll_status_wclear = TRUE;
6123 use_scroll_redrawwin = FALSE;
6124
6125 } else if (term && !strcmp(term, "xrvt-xpm")) {
6126 /* No problems with full optimizations in xrvt-(unicode)
6127 * and aterm. */
6128 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6129
6130 } else {
6131 /* When scrolling in (u)xterm the last line in the
6132 * scrolling direction will update slowly. */
6133 use_scroll_redrawwin = TRUE;
6134 use_scroll_status_wclear = FALSE;
6135 }
6136 }
6137
6138 static int
6139 get_input(int prompt_position)
6140 {
6141 struct view *view;
6142 int i, key, cursor_y, cursor_x;
6143
6144 if (prompt_position)
6145 input_mode = TRUE;
6146
6147 while (TRUE) {
6148 bool loading = FALSE;
6149
6150 foreach_view (view, i) {
6151 update_view(view);
6152 if (view_is_displayed(view) && view->has_scrolled &&
6153 use_scroll_redrawwin)
6154 redrawwin(view->win);
6155 view->has_scrolled = FALSE;
6156 if (view->pipe)
6157 loading = TRUE;
6158 }
6159
6160 /* Update the cursor position. */
6161 if (prompt_position) {
6162 getbegyx(status_win, cursor_y, cursor_x);
6163 cursor_x = prompt_position;
6164 } else {
6165 view = display[current_view];
6166 getbegyx(view->win, cursor_y, cursor_x);
6167 cursor_x = view->width - 1;
6168 cursor_y += view->lineno - view->offset;
6169 }
6170 setsyx(cursor_y, cursor_x);
6171
6172 /* Refresh, accept single keystroke of input */
6173 doupdate();
6174 nodelay(status_win, loading);
6175 key = wgetch(status_win);
6176
6177 /* wgetch() with nodelay() enabled returns ERR when
6178 * there's no input. */
6179 if (key == ERR) {
6180
6181 } else if (key == KEY_RESIZE) {
6182 int height, width;
6183
6184 getmaxyx(stdscr, height, width);
6185
6186 wresize(status_win, 1, width);
6187 mvwin(status_win, height - 1, 0);
6188 wnoutrefresh(status_win);
6189 resize_display();
6190 redraw_display(TRUE);
6191
6192 } else {
6193 input_mode = FALSE;
6194 return key;
6195 }
6196 }
6197 }
6198
6199 static char *
6200 prompt_input(const char *prompt, input_handler handler, void *data)
6201 {
6202 enum input_status status = INPUT_OK;
6203 static char buf[SIZEOF_STR];
6204 size_t pos = 0;
6205
6206 buf[pos] = 0;
6207
6208 while (status == INPUT_OK || status == INPUT_SKIP) {
6209 int key;
6210
6211 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6212 wclrtoeol(status_win);
6213
6214 key = get_input(pos + 1);
6215 switch (key) {
6216 case KEY_RETURN:
6217 case KEY_ENTER:
6218 case '\n':
6219 status = pos ? INPUT_STOP : INPUT_CANCEL;
6220 break;
6221
6222 case KEY_BACKSPACE:
6223 if (pos > 0)
6224 buf[--pos] = 0;
6225 else
6226 status = INPUT_CANCEL;
6227 break;
6228
6229 case KEY_ESC:
6230 status = INPUT_CANCEL;
6231 break;
6232
6233 default:
6234 if (pos >= sizeof(buf)) {
6235 report("Input string too long");
6236 return NULL;
6237 }
6238
6239 status = handler(data, buf, key);
6240 if (status == INPUT_OK)
6241 buf[pos++] = (char) key;
6242 }
6243 }
6244
6245 /* Clear the status window */
6246 status_empty = FALSE;
6247 report("");
6248
6249 if (status == INPUT_CANCEL)
6250 return NULL;
6251
6252 buf[pos++] = 0;
6253
6254 return buf;
6255 }
6256
6257 static enum input_status
6258 prompt_yesno_handler(void *data, char *buf, int c)
6259 {
6260 if (c == 'y' || c == 'Y')
6261 return INPUT_STOP;
6262 if (c == 'n' || c == 'N')
6263 return INPUT_CANCEL;
6264 return INPUT_SKIP;
6265 }
6266
6267 static bool
6268 prompt_yesno(const char *prompt)
6269 {
6270 char prompt2[SIZEOF_STR];
6271
6272 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6273 return FALSE;
6274
6275 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6276 }
6277
6278 static enum input_status
6279 read_prompt_handler(void *data, char *buf, int c)
6280 {
6281 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6282 }
6283
6284 static char *
6285 read_prompt(const char *prompt)
6286 {
6287 return prompt_input(prompt, read_prompt_handler, NULL);
6288 }
6289
6290 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6291 {
6292 enum input_status status = INPUT_OK;
6293 int size = 0;
6294
6295 while (items[size].text)
6296 size++;
6297
6298 while (status == INPUT_OK) {
6299 const struct menu_item *item = &items[*selected];
6300 int key;
6301 int i;
6302
6303 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6304 prompt, *selected + 1, size);
6305 if (item->hotkey)
6306 wprintw(status_win, "[%c] ", (char) item->hotkey);
6307 wprintw(status_win, "%s", item->text);
6308 wclrtoeol(status_win);
6309
6310 key = get_input(COLS - 1);
6311 switch (key) {
6312 case KEY_RETURN:
6313 case KEY_ENTER:
6314 case '\n':
6315 status = INPUT_STOP;
6316 break;
6317
6318 case KEY_LEFT:
6319 case KEY_UP:
6320 *selected = *selected - 1;
6321 if (*selected < 0)
6322 *selected = size - 1;
6323 break;
6324
6325 case KEY_RIGHT:
6326 case KEY_DOWN:
6327 *selected = (*selected + 1) % size;
6328 break;
6329
6330 case KEY_ESC:
6331 status = INPUT_CANCEL;
6332 break;
6333
6334 default:
6335 for (i = 0; items[i].text; i++)
6336 if (items[i].hotkey == key) {
6337 *selected = i;
6338 status = INPUT_STOP;
6339 break;
6340 }
6341 }
6342 }
6343
6344 /* Clear the status window */
6345 status_empty = FALSE;
6346 report("");
6347
6348 return status != INPUT_CANCEL;
6349 }
6350
6351 /*
6352 * Repository properties
6353 */
6354
6355 static struct ref **refs = NULL;
6356 static size_t refs_size = 0;
6357 static struct ref *refs_head = NULL;
6358
6359 static struct ref_list **ref_lists = NULL;
6360 static size_t ref_lists_size = 0;
6361
6362 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6363 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6364 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6365
6366 static int
6367 compare_refs(const void *ref1_, const void *ref2_)
6368 {
6369 const struct ref *ref1 = *(const struct ref **)ref1_;
6370 const struct ref *ref2 = *(const struct ref **)ref2_;
6371
6372 if (ref1->tag != ref2->tag)
6373 return ref2->tag - ref1->tag;
6374 if (ref1->ltag != ref2->ltag)
6375 return ref2->ltag - ref2->ltag;
6376 if (ref1->head != ref2->head)
6377 return ref2->head - ref1->head;
6378 if (ref1->tracked != ref2->tracked)
6379 return ref2->tracked - ref1->tracked;
6380 if (ref1->remote != ref2->remote)
6381 return ref2->remote - ref1->remote;
6382 return strcmp(ref1->name, ref2->name);
6383 }
6384
6385 static void
6386 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6387 {
6388 size_t i;
6389
6390 for (i = 0; i < refs_size; i++)
6391 if (!visitor(data, refs[i]))
6392 break;
6393 }
6394
6395 static struct ref *
6396 get_ref_head()
6397 {
6398 return refs_head;
6399 }
6400
6401 static struct ref_list *
6402 get_ref_list(const char *id)
6403 {
6404 struct ref_list *list;
6405 size_t i;
6406
6407 for (i = 0; i < ref_lists_size; i++)
6408 if (!strcmp(id, ref_lists[i]->id))
6409 return ref_lists[i];
6410
6411 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6412 return NULL;
6413 list = calloc(1, sizeof(*list));
6414 if (!list)
6415 return NULL;
6416
6417 for (i = 0; i < refs_size; i++) {
6418 if (!strcmp(id, refs[i]->id) &&
6419 realloc_refs_list(&list->refs, list->size, 1))
6420 list->refs[list->size++] = refs[i];
6421 }
6422
6423 if (!list->refs) {
6424 free(list);
6425 return NULL;
6426 }
6427
6428 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6429 ref_lists[ref_lists_size++] = list;
6430 return list;
6431 }
6432
6433 static int
6434 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6435 {
6436 struct ref *ref = NULL;
6437 bool tag = FALSE;
6438 bool ltag = FALSE;
6439 bool remote = FALSE;
6440 bool tracked = FALSE;
6441 bool head = FALSE;
6442 int from = 0, to = refs_size - 1;
6443
6444 if (!prefixcmp(name, "refs/tags/")) {
6445 if (!suffixcmp(name, namelen, "^{}")) {
6446 namelen -= 3;
6447 name[namelen] = 0;
6448 } else {
6449 ltag = TRUE;
6450 }
6451
6452 tag = TRUE;
6453 namelen -= STRING_SIZE("refs/tags/");
6454 name += STRING_SIZE("refs/tags/");
6455
6456 } else if (!prefixcmp(name, "refs/remotes/")) {
6457 remote = TRUE;
6458 namelen -= STRING_SIZE("refs/remotes/");
6459 name += STRING_SIZE("refs/remotes/");
6460 tracked = !strcmp(opt_remote, name);
6461
6462 } else if (!prefixcmp(name, "refs/heads/")) {
6463 namelen -= STRING_SIZE("refs/heads/");
6464 name += STRING_SIZE("refs/heads/");
6465 if (!strncmp(opt_head, name, namelen))
6466 return OK;
6467
6468 } else if (!strcmp(name, "HEAD")) {
6469 head = TRUE;
6470 if (*opt_head) {
6471 namelen = strlen(opt_head);
6472 name = opt_head;
6473 }
6474 }
6475
6476 /* If we are reloading or it's an annotated tag, replace the
6477 * previous SHA1 with the resolved commit id; relies on the fact
6478 * git-ls-remote lists the commit id of an annotated tag right
6479 * before the commit id it points to. */
6480 while (from <= to) {
6481 size_t pos = (to + from) / 2;
6482 int cmp = strcmp(name, refs[pos]->name);
6483
6484 if (!cmp) {
6485 ref = refs[pos];
6486 break;
6487 }
6488
6489 if (cmp < 0)
6490 to = pos - 1;
6491 else
6492 from = pos + 1;
6493 }
6494
6495 if (!ref) {
6496 if (!realloc_refs(&refs, refs_size, 1))
6497 return ERR;
6498 ref = calloc(1, sizeof(*ref) + namelen);
6499 if (!ref)
6500 return ERR;
6501 memmove(refs + from + 1, refs + from,
6502 (refs_size - from) * sizeof(*refs));
6503 refs[from] = ref;
6504 strncpy(ref->name, name, namelen);
6505 refs_size++;
6506 }
6507
6508 ref->head = head;
6509 ref->tag = tag;
6510 ref->ltag = ltag;
6511 ref->remote = remote;
6512 ref->tracked = tracked;
6513 string_copy_rev(ref->id, id);
6514
6515 if (head)
6516 refs_head = ref;
6517 return OK;
6518 }
6519
6520 static int
6521 load_refs(void)
6522 {
6523 const char *head_argv[] = {
6524 "git", "symbolic-ref", "HEAD", NULL
6525 };
6526 static const char *ls_remote_argv[SIZEOF_ARG] = {
6527 "git", "ls-remote", opt_git_dir, NULL
6528 };
6529 static bool init = FALSE;
6530 size_t i;
6531
6532 if (!init) {
6533 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6534 die("TIG_LS_REMOTE contains too many arguments");
6535 init = TRUE;
6536 }
6537
6538 if (!*opt_git_dir)
6539 return OK;
6540
6541 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6542 !prefixcmp(opt_head, "refs/heads/")) {
6543 char *offset = opt_head + STRING_SIZE("refs/heads/");
6544
6545 memmove(opt_head, offset, strlen(offset) + 1);
6546 }
6547
6548 refs_head = NULL;
6549 for (i = 0; i < refs_size; i++)
6550 refs[i]->id[0] = 0;
6551
6552 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6553 return ERR;
6554
6555 /* Update the ref lists to reflect changes. */
6556 for (i = 0; i < ref_lists_size; i++) {
6557 struct ref_list *list = ref_lists[i];
6558 size_t old, new;
6559
6560 for (old = new = 0; old < list->size; old++)
6561 if (!strcmp(list->id, list->refs[old]->id))
6562 list->refs[new++] = list->refs[old];
6563 list->size = new;
6564 }
6565
6566 return OK;
6567 }
6568
6569 static void
6570 set_remote_branch(const char *name, const char *value, size_t valuelen)
6571 {
6572 if (!strcmp(name, ".remote")) {
6573 string_ncopy(opt_remote, value, valuelen);
6574
6575 } else if (*opt_remote && !strcmp(name, ".merge")) {
6576 size_t from = strlen(opt_remote);
6577
6578 if (!prefixcmp(value, "refs/heads/"))
6579 value += STRING_SIZE("refs/heads/");
6580
6581 if (!string_format_from(opt_remote, &from, "/%s", value))
6582 opt_remote[0] = 0;
6583 }
6584 }
6585
6586 static void
6587 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6588 {
6589 const char *argv[SIZEOF_ARG] = { name, "=" };
6590 int argc = 1 + (cmd == option_set_command);
6591 enum option_code error;
6592
6593 if (!argv_from_string(argv, &argc, value))
6594 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6595 else
6596 error = cmd(argc, argv);
6597
6598 if (error != OPT_OK)
6599 warn("Option 'tig.%s': %s", name, option_errors[error]);
6600 }
6601
6602 static bool
6603 set_environment_variable(const char *name, const char *value)
6604 {
6605 size_t len = strlen(name) + 1 + strlen(value) + 1;
6606 char *env = malloc(len);
6607
6608 if (env &&
6609 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6610 putenv(env) == 0)
6611 return TRUE;
6612 free(env);
6613 return FALSE;
6614 }
6615
6616 static void
6617 set_work_tree(const char *value)
6618 {
6619 char cwd[SIZEOF_STR];
6620
6621 if (!getcwd(cwd, sizeof(cwd)))
6622 die("Failed to get cwd path: %s", strerror(errno));
6623 if (chdir(opt_git_dir) < 0)
6624 die("Failed to chdir(%s): %s", strerror(errno));
6625 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6626 die("Failed to get git path: %s", strerror(errno));
6627 if (chdir(cwd) < 0)
6628 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6629 if (chdir(value) < 0)
6630 die("Failed to chdir(%s): %s", value, strerror(errno));
6631 if (!getcwd(cwd, sizeof(cwd)))
6632 die("Failed to get cwd path: %s", strerror(errno));
6633 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6634 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6635 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6636 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6637 opt_is_inside_work_tree = TRUE;
6638 }
6639
6640 static int
6641 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6642 {
6643 if (!strcmp(name, "i18n.commitencoding"))
6644 string_ncopy(opt_encoding, value, valuelen);
6645
6646 else if (!strcmp(name, "core.editor"))
6647 string_ncopy(opt_editor, value, valuelen);
6648
6649 else if (!strcmp(name, "core.worktree"))
6650 set_work_tree(value);
6651
6652 else if (!prefixcmp(name, "tig.color."))
6653 set_repo_config_option(name + 10, value, option_color_command);
6654
6655 else if (!prefixcmp(name, "tig.bind."))
6656 set_repo_config_option(name + 9, value, option_bind_command);
6657
6658 else if (!prefixcmp(name, "tig."))
6659 set_repo_config_option(name + 4, value, option_set_command);
6660
6661 else if (*opt_head && !prefixcmp(name, "branch.") &&
6662 !strncmp(name + 7, opt_head, strlen(opt_head)))
6663 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6664
6665 return OK;
6666 }
6667
6668 static int
6669 load_git_config(void)
6670 {
6671 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6672
6673 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6674 }
6675
6676 static int
6677 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6678 {
6679 if (!opt_git_dir[0]) {
6680 string_ncopy(opt_git_dir, name, namelen);
6681
6682 } else if (opt_is_inside_work_tree == -1) {
6683 /* This can be 3 different values depending on the
6684 * version of git being used. If git-rev-parse does not
6685 * understand --is-inside-work-tree it will simply echo
6686 * the option else either "true" or "false" is printed.
6687 * Default to true for the unknown case. */
6688 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6689
6690 } else if (*name == '.') {
6691 string_ncopy(opt_cdup, name, namelen);
6692
6693 } else {
6694 string_ncopy(opt_prefix, name, namelen);
6695 }
6696
6697 return OK;
6698 }
6699
6700 static int
6701 load_repo_info(void)
6702 {
6703 const char *rev_parse_argv[] = {
6704 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6705 "--show-cdup", "--show-prefix", NULL
6706 };
6707
6708 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6709 }
6710
6711
6712 /*
6713 * Main
6714 */
6715
6716 static const char usage[] =
6717 "tig " TIG_VERSION " (" __DATE__ ")\n"
6718 "\n"
6719 "Usage: tig [options] [revs] [--] [paths]\n"
6720 " or: tig show [options] [revs] [--] [paths]\n"
6721 " or: tig blame [options] [rev] [--] path\n"
6722 " or: tig status\n"
6723 " or: tig < [git command output]\n"
6724 "\n"
6725 "Options:\n"
6726 " -v, --version Show version and exit\n"
6727 " -h, --help Show help message and exit";
6728
6729 static void __NORETURN
6730 quit(int sig)
6731 {
6732 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6733 if (cursed)
6734 endwin();
6735 exit(0);
6736 }
6737
6738 static void __NORETURN
6739 die(const char *err, ...)
6740 {
6741 va_list args;
6742
6743 endwin();
6744
6745 va_start(args, err);
6746 fputs("tig: ", stderr);
6747 vfprintf(stderr, err, args);
6748 fputs("\n", stderr);
6749 va_end(args);
6750
6751 exit(1);
6752 }
6753
6754 static void
6755 warn(const char *msg, ...)
6756 {
6757 va_list args;
6758
6759 va_start(args, msg);
6760 fputs("tig warning: ", stderr);
6761 vfprintf(stderr, msg, args);
6762 fputs("\n", stderr);
6763 va_end(args);
6764 }
6765
6766 static int
6767 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6768 {
6769 const char ***filter_args = data;
6770
6771 return argv_append(filter_args, name) ? OK : ERR;
6772 }
6773
6774 static void
6775 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6776 {
6777 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6778 const char **all_argv = NULL;
6779
6780 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6781 !argv_append_array(&all_argv, argv) ||
6782 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6783 die("Failed to split arguments");
6784 argv_free(all_argv);
6785 free(all_argv);
6786 }
6787
6788 static void
6789 filter_options(const char *argv[])
6790 {
6791 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6792 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6793 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6794 }
6795
6796 static enum request
6797 parse_options(int argc, const char *argv[])
6798 {
6799 enum request request = REQ_VIEW_MAIN;
6800 const char *subcommand;
6801 bool seen_dashdash = FALSE;
6802 const char **filter_argv = NULL;
6803 int i;
6804
6805 if (!isatty(STDIN_FILENO))
6806 return REQ_VIEW_PAGER;
6807
6808 if (argc <= 1)
6809 return REQ_VIEW_MAIN;
6810
6811 subcommand = argv[1];
6812 if (!strcmp(subcommand, "status")) {
6813 if (argc > 2)
6814 warn("ignoring arguments after `%s'", subcommand);
6815 return REQ_VIEW_STATUS;
6816
6817 } else if (!strcmp(subcommand, "blame")) {
6818 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6819 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6820 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6821
6822 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6823 die("invalid number of options to blame\n\n%s", usage);
6824
6825 if (opt_rev_argv) {
6826 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6827 }
6828
6829 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6830 return REQ_VIEW_BLAME;
6831
6832 } else if (!strcmp(subcommand, "show")) {
6833 request = REQ_VIEW_DIFF;
6834
6835 } else {
6836 subcommand = NULL;
6837 }
6838
6839 for (i = 1 + !!subcommand; i < argc; i++) {
6840 const char *opt = argv[i];
6841
6842 if (seen_dashdash) {
6843 argv_append(&opt_file_argv, opt);
6844 continue;
6845
6846 } else if (!strcmp(opt, "--")) {
6847 seen_dashdash = TRUE;
6848 continue;
6849
6850 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6851 printf("tig version %s\n", TIG_VERSION);
6852 quit(0);
6853
6854 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6855 printf("%s\n", usage);
6856 quit(0);
6857
6858 } else if (!strcmp(opt, "--all")) {
6859 argv_append(&opt_rev_argv, opt);
6860 continue;
6861 }
6862
6863 if (!argv_append(&filter_argv, opt))
6864 die("command too long");
6865 }
6866
6867 if (filter_argv)
6868 filter_options(filter_argv);
6869
6870 return request;
6871 }
6872
6873 int
6874 main(int argc, const char *argv[])
6875 {
6876 const char *codeset = "UTF-8";
6877 enum request request = parse_options(argc, argv);
6878 struct view *view;
6879
6880 signal(SIGINT, quit);
6881 signal(SIGPIPE, SIG_IGN);
6882
6883 if (setlocale(LC_ALL, "")) {
6884 codeset = nl_langinfo(CODESET);
6885 }
6886
6887 if (load_repo_info() == ERR)
6888 die("Failed to load repo info.");
6889
6890 if (load_options() == ERR)
6891 die("Failed to load user config.");
6892
6893 if (load_git_config() == ERR)
6894 die("Failed to load repo config.");
6895
6896 /* Require a git repository unless when running in pager mode. */
6897 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6898 die("Not a git repository");
6899
6900 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6901 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6902 if (opt_iconv_in == ICONV_NONE)
6903 die("Failed to initialize character set conversion");
6904 }
6905
6906 if (codeset && strcmp(codeset, "UTF-8")) {
6907 opt_iconv_out = iconv_open(codeset, "UTF-8");
6908 if (opt_iconv_out == ICONV_NONE)
6909 die("Failed to initialize character set conversion");
6910 }
6911
6912 if (load_refs() == ERR)
6913 die("Failed to load refs.");
6914
6915 init_display();
6916
6917 while (view_driver(display[current_view], request)) {
6918 int key = get_input(0);
6919
6920 view = display[current_view];
6921 request = get_keybinding(view->keymap, key);
6922
6923 /* Some low-level request handling. This keeps access to
6924 * status_win restricted. */
6925 switch (request) {
6926 case REQ_NONE:
6927 report("Unknown key, press %s for help",
6928 get_key(view->keymap, REQ_VIEW_HELP));
6929 break;
6930 case REQ_PROMPT:
6931 {
6932 char *cmd = read_prompt(":");
6933
6934 if (cmd && isdigit(*cmd)) {
6935 int lineno = view->lineno + 1;
6936
6937 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6938 select_view_line(view, lineno - 1);
6939 report("");
6940 } else {
6941 report("Unable to parse '%s' as a line number", cmd);
6942 }
6943
6944 } else if (cmd) {
6945 struct view *next = VIEW(REQ_VIEW_PAGER);
6946 const char *argv[SIZEOF_ARG] = { "git" };
6947 int argc = 1;
6948
6949 /* When running random commands, initially show the
6950 * command in the title. However, it maybe later be
6951 * overwritten if a commit line is selected. */
6952 string_ncopy(next->ref, cmd, strlen(cmd));
6953
6954 if (!argv_from_string(argv, &argc, cmd)) {
6955 report("Too many arguments");
6956 } else if (!prepare_update(next, argv, NULL)) {
6957 report("Failed to format command");
6958 } else {
6959 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
6960 }
6961 }
6962
6963 request = REQ_NONE;
6964 break;
6965 }
6966 case REQ_SEARCH:
6967 case REQ_SEARCH_BACK:
6968 {
6969 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6970 char *search = read_prompt(prompt);
6971
6972 if (search)
6973 string_ncopy(opt_search, search, strlen(search));
6974 else if (*opt_search)
6975 request = request == REQ_SEARCH ?
6976 REQ_FIND_NEXT :
6977 REQ_FIND_PREV;
6978 else
6979 request = REQ_NONE;
6980 break;
6981 }
6982 default:
6983 break;
6984 }
6985 }
6986
6987 quit(0);
6988
6989 return 0;
6990 }
Text-mode interface for git