![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
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 */
14 #include "tig.h"
15 #include "io.h"
16 #include "graph.h"
18 static void __NORETURN die(const char *err, ...);
19 static void warn(const char *msg, ...);
20 static void report(const char *msg, ...);
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 };
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 };
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);
44 enum input_status {
45 INPUT_OK,
46 INPUT_SKIP,
47 INPUT_STOP,
48 INPUT_CANCEL
49 };
51 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
53 static char *prompt_input(const char *prompt, input_handler handler, void *data);
54 static bool prompt_yesno(const char *prompt);
56 struct menu_item {
57 int hotkey;
58 const char *text;
59 void *data;
60 };
62 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected);
64 enum graphic {
65 GRAPHIC_ASCII = 0,
66 GRAPHIC_DEFAULT,
67 GRAPHIC_UTF8
68 };
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 };
78 #define DATE_INFO \
79 DATE_(NO), \
80 DATE_(DEFAULT), \
81 DATE_(LOCAL), \
82 DATE_(RELATIVE), \
83 DATE_(SHORT)
85 enum date {
86 #define DATE_(name) DATE_##name
87 DATE_INFO
88 #undef DATE_
89 };
91 static const struct enum_map date_map[] = {
92 #define DATE_(name) ENUM_MAP(#name, DATE_##name)
93 DATE_INFO
94 #undef DATE_
95 };
97 struct time {
98 time_t sec;
99 int tz;
100 };
102 static inline int timecmp(const struct time *t1, const struct time *t2)
103 {
104 return t1->sec - t2->sec;
105 }
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;
121 if (!date || !time || !time->sec)
122 return "";
124 if (date == DATE_RELATIVE) {
125 struct timeval now;
126 time_t date = time->sec + time->tz;
127 time_t seconds;
128 int i;
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;
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 }
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 }
157 #define AUTHOR_VALUES \
158 AUTHOR_(NO), \
159 AUTHOR_(FULL), \
160 AUTHOR_(ABBREVIATED)
162 enum author {
163 #define AUTHOR_(name) AUTHOR_##name
164 AUTHOR_VALUES,
165 #undef AUTHOR_
166 AUTHOR_DEFAULT = AUTHOR_FULL
167 };
169 static const struct enum_map author_map[] = {
170 #define AUTHOR_(name) ENUM_MAP(#name, AUTHOR_##name)
171 AUTHOR_VALUES
172 #undef AUTHOR_
173 };
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');
182 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@' || (c) == '-')
184 memset(initials, 0, sizeof(initials));
185 while (author < end) {
186 unsigned char bytes;
187 size_t i;
189 while (is_initial_sep(*author))
190 author++;
192 bytes = utf8_char_length(author, end);
193 if (bytes < sizeof(initials) - 1 - pos) {
194 while (bytes--) {
195 initials[pos++] = *author++;
196 }
197 }
199 for (i = pos; author < end && !is_initial_sep(*author); author++) {
200 if (i < sizeof(initials) - 1)
201 initials[i++] = *author;
202 }
204 initials[i++] = 0;
205 }
207 return initials;
208 }
211 /*
212 * User requests
213 */
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")
290 /* User action requests. */
291 enum request {
292 #define REQ_GROUP(help)
293 #define REQ_(req, help) REQ_##req
295 /* Offset all requests to avoid conflicts with ncurses getch values. */
296 REQ_UNKNOWN = KEY_MAX + 1,
297 REQ_OFFSET,
298 REQ_INFO
300 #undef REQ_GROUP
301 #undef REQ_
302 };
304 struct request_info {
305 enum request request;
306 const char *name;
307 int namelen;
308 const char *help;
309 };
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 };
319 static enum request
320 get_request(const char *name)
321 {
322 int namelen = strlen(name);
323 int i;
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;
329 return REQ_UNKNOWN;
330 }
333 /*
334 * Options
335 */
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;
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)))
374 /*
375 * Line-oriented content detection.
376 */
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)
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 };
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 };
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 };
470 static enum line_type
471 get_line_type(const char *line)
472 {
473 int linelen = strlen(line);
474 enum line_type type;
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;
482 return LINE_DEFAULT;
483 }
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 }
492 static struct line_info *
493 get_line_info(const char *name)
494 {
495 size_t namelen = strlen(name);
496 enum line_type type;
498 for (type = 0; type < ARRAY_SIZE(line_info); type++)
499 if (enum_equals(line_info[type], name, namelen))
500 return &line_info[type];
502 return NULL;
503 }
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;
512 start_color();
514 if (assume_default_colors(default_fg, default_bg) == ERR) {
515 default_bg = COLOR_BLACK;
516 default_fg = COLOR_WHITE;
517 }
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;
524 init_pair(type, fg, bg);
525 }
526 }
528 struct line {
529 enum line_type type;
531 /* State flags */
532 unsigned int selected:1;
533 unsigned int dirty:1;
534 unsigned int cleareol:1;
535 unsigned int other:16;
537 void *data; /* User data */
538 };
541 /*
542 * Keys
543 */
545 struct keybinding {
546 int alias;
547 enum request request;
548 };
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 },
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 },
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 },
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 },
600 /* Searching */
601 { '/', REQ_SEARCH },
602 { '?', REQ_SEARCH_BACK },
603 { 'n', REQ_FIND_NEXT },
604 { 'N', REQ_FIND_PREV },
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 };
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)
644 enum keymap {
645 #define KEYMAP_(name) KEYMAP_##name
646 KEYMAP_INFO
647 #undef KEYMAP_
648 };
650 static const struct enum_map keymap_table[] = {
651 #define KEYMAP_(name) ENUM_MAP(#name, KEYMAP_##name)
652 KEYMAP_INFO
653 #undef KEYMAP_
654 };
656 #define set_keymap(map, name) map_enum(map, keymap_table, name)
658 struct keybinding_table {
659 struct keybinding *data;
660 size_t size;
661 };
663 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
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;
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 }
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;
684 if (request == REQ_NONE && keymap == KEYMAP_GENERIC) {
685 int i;
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 }
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;
700 for (i = 0; i < keybindings[keymap].size; i++)
701 if (keybindings[keymap].data[i].alias == key)
702 return keybindings[keymap].data[i].request;
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;
708 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
709 if (default_keybindings[i].alias == key)
710 return default_keybindings[i].request;
712 return (enum request) key;
713 }
716 struct key {
717 const char *name;
718 int value;
719 };
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 };
752 static int
753 get_key_value(const char *name)
754 {
755 int i;
757 for (i = 0; i < ARRAY_SIZE(key_table); i++)
758 if (!strcasecmp(key_table[i].name, name))
759 return key_table[i].value;
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 }
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;
775 for (key = 0; key < ARRAY_SIZE(key_table); key++)
776 if (key_table[key].value == key_value)
777 seq = key_table[key].name;
779 if (seq == NULL && key_value < 0x7f) {
780 char *s = key_char + 1;
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 }
793 return seq ? seq : "(no key)";
794 }
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);
802 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
803 }
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;
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 }
820 return TRUE;
821 }
823 #define get_key(keymap, request) get_keys(keymap, request, FALSE)
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;
832 buf[pos] = 0;
834 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
835 return "Too many keybindings!";
836 if (pos > 0 && !all)
837 return buf;
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;
845 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
846 return "Too many keybindings!";
847 if (pos)
848 return buf;
849 }
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 }
860 return buf;
861 }
863 struct run_request {
864 enum keymap keymap;
865 int key;
866 const char **argv;
867 };
869 static struct run_request *run_request;
870 static size_t run_requests;
872 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
874 static enum request
875 add_run_request(enum keymap keymap, int key, const char **argv)
876 {
877 struct run_request *req;
879 if (!realloc_run_requests(&run_request, run_requests, 1))
880 return REQ_NONE;
882 req = &run_request[run_requests];
883 req->keymap = keymap;
884 req->key = key;
885 req->argv = NULL;
887 if (!argv_copy(&req->argv, argv))
888 return REQ_NONE;
890 return REQ_NONE + ++run_requests;
891 }
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 }
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;
916 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
917 enum request req = get_keybinding(reqs[i].keymap, reqs[i].key);
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 }
927 /*
928 * User config file handling.
929 */
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"),
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 };
957 static const char *option_errors[] = {
958 #define OPT_ERR_(name, msg) msg
959 OPT_ERR_INFO
960 #undef OPT_ERR_
961 };
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 };
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 };
987 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
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;
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 }
1009 static enum option_code
1010 parse_int(int *opt, const char *arg, int min, int max)
1011 {
1012 int value = atoi(arg);
1014 if (min <= value && value <= max) {
1015 *opt = value;
1016 return OPT_OK;
1017 }
1019 return OPT_ERR_INTEGER_VALUE_OUT_OF_BOUND;
1020 }
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 }
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;
1038 if (argc < 3)
1039 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
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;
1050 if (!map_enum(&index, obsolete, argv[0]))
1051 return OPT_ERR_UNKNOWN_COLOR_NAME;
1052 info = &line_info[index];
1053 }
1055 if (!set_color(&info->fg, argv[1]) ||
1056 !set_color(&info->bg, argv[2]))
1057 return OPT_ERR_UNKNOWN_COLOR;
1059 info->attr = 0;
1060 while (argc-- > 3) {
1061 int attr;
1063 if (!set_attribute(&attr, argv[argc]))
1064 return OPT_ERR_UNKNOWN_ATTRIBUTE;
1065 info->attr |= attr;
1066 }
1068 return OPT_OK;
1069 }
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 }
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;
1085 assert(map_size > 1);
1087 if (map_enum_do(map, map_size, (int *) opt, arg))
1088 return OPT_OK;
1090 parse_bool(&is_true, arg);
1091 *opt = is_true ? map[1].value : map[0].value;
1092 return OPT_OK;
1093 }
1095 #define parse_enum(opt, arg, map) \
1096 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1098 static enum option_code
1099 parse_string(char *opt, const char *arg, size_t optsize)
1100 {
1101 int arglen = strlen(arg);
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 }
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 }
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;
1130 if (strcmp(argv[1], "="))
1131 return OPT_ERR_NO_VALUE_ASSIGNED;
1133 if (!strcmp(argv[0], "blame-options"))
1134 return parse_args(&opt_blame_argv, argv + 2);
1136 if (argc != 3)
1137 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1139 if (!strcmp(argv[0], "show-author"))
1140 return parse_enum(&opt_author, argv[2], author_map);
1142 if (!strcmp(argv[0], "show-date"))
1143 return parse_enum(&opt_date, argv[2], date_map);
1145 if (!strcmp(argv[0], "show-rev-graph"))
1146 return parse_bool(&opt_rev_graph, argv[2]);
1148 if (!strcmp(argv[0], "show-refs"))
1149 return parse_bool(&opt_show_refs, argv[2]);
1151 if (!strcmp(argv[0], "show-line-numbers"))
1152 return parse_bool(&opt_line_number, argv[2]);
1154 if (!strcmp(argv[0], "line-graphics"))
1155 return parse_enum(&opt_line_graphics, argv[2], graphic_map);
1157 if (!strcmp(argv[0], "line-number-interval"))
1158 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1160 if (!strcmp(argv[0], "author-width"))
1161 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1163 if (!strcmp(argv[0], "horizontal-scroll"))
1164 return parse_step(&opt_hscroll, argv[2]);
1166 if (!strcmp(argv[0], "split-view-height"))
1167 return parse_step(&opt_scale_split_view, argv[2]);
1169 if (!strcmp(argv[0], "tab-size"))
1170 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1172 if (!strcmp(argv[0], "commit-encoding"))
1173 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1175 if (!strcmp(argv[0], "status-untracked-dirs"))
1176 return parse_bool(&opt_untracked_dirs_content, argv[2]);
1178 return OPT_ERR_UNKNOWN_VARIABLE_NAME;
1179 }
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;
1189 if (argc < 3)
1190 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1192 if (!set_keymap(&keymap, argv[0]))
1193 return OPT_ERR_UNKNOWN_KEY_MAP;
1195 key = get_key_value(argv[1]);
1196 if (key == ERR)
1197 return OPT_ERR_UNKNOWN_KEY;
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;
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;
1219 add_keybinding(keymap, request, key);
1221 return OPT_OK;
1222 }
1224 static enum option_code
1225 set_option(const char *opt, char *value)
1226 {
1227 const char *argv[SIZEOF_ARG];
1228 int argc = 0;
1230 if (!argv_from_string(argv, &argc, value))
1231 return OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
1233 if (!strcmp(opt, "color"))
1234 return option_color_command(argc, argv);
1236 if (!strcmp(opt, "set"))
1237 return option_set_command(argc, argv);
1239 if (!strcmp(opt, "bind"))
1240 return option_bind_command(argc, argv);
1242 return OPT_ERR_UNKNOWN_OPTION_COMMAND;
1243 }
1245 struct config_state {
1246 int lineno;
1247 bool errors;
1248 };
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;
1256 config->lineno++;
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;
1264 if (opt[optlen] == 0) {
1265 /* Look for comment endings in the value. */
1266 size_t len = strcspn(value, "#");
1268 if (len < valuelen) {
1269 valuelen = len;
1270 value[valuelen] = 0;
1271 }
1273 status = set_option(opt, value);
1274 }
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 }
1282 /* Always keep going if errors are encountered. */
1283 return OK;
1284 }
1286 static void
1287 load_option_file(const char *path)
1288 {
1289 struct config_state config = { 0, FALSE };
1290 struct io io;
1292 /* It's OK that the file doesn't exist. */
1293 if (!io_open(&io, "%s", path))
1294 return;
1296 if (io_load(&io, " \t", read_option, &config) == ERR ||
1297 config.errors == TRUE)
1298 warn("Errors while loading %s.", path);
1299 }
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];
1310 if (!tigrc_system)
1311 tigrc_system = SYSCONFDIR "/tigrc";
1312 load_option_file(tigrc_system);
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);
1321 /* Add _after_ loading config files to avoid adding run requests
1322 * that conflict with keybindings. */
1323 add_builtin_run_requests();
1325 if (!opt_diff_argv && tig_diff_opts && *tig_diff_opts) {
1326 static const char *diff_opts[SIZEOF_ARG] = { NULL };
1327 int argc = 0;
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 }
1336 return OK;
1337 }
1340 /*
1341 * The viewer
1342 */
1344 struct view;
1345 struct view_ops;
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;
1353 #define foreach_displayed_view(view, i) \
1354 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1356 #define displayed_views() (display[1] != NULL ? 2 : 1)
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] = "";
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 };
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} */
1383 struct view_ops *ops; /* View operations */
1385 enum keymap keymap; /* What keymap does this view have */
1386 bool git_dir; /* Whether the view requires a git directory. */
1388 char ref[SIZEOF_REF]; /* Hovered commit reference */
1389 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1391 int height, width; /* The width and height of the main window */
1392 WINDOW *win; /* The main window */
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. */
1403 /* Searching */
1404 char grep[SIZEOF_STR]; /* Search string */
1405 regex_t *regex; /* Pre-compiled regexp */
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;
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. */
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. */
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 };
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 };
1440 struct view_ops {
1441 /* What type of content being displayed. Used in the title bar. */
1442 const char *type;
1443 /* Open and reads in all view content. */
1444 bool (*open)(struct view *view, enum open_flags flags);
1445 /* Read one line; updates view->line. */
1446 bool (*read)(struct view *view, char *data);
1447 /* Draw one line; @lineno must be < view->height. */
1448 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1449 /* Depending on view handle a special requests. */
1450 enum request (*request)(struct view *view, enum request request, struct line *line);
1451 /* Search for regexp in a line. */
1452 bool (*grep)(struct view *view, struct line *line);
1453 /* Select line */
1454 void (*select)(struct view *view, struct line *line);
1455 };
1457 static struct view_ops blame_ops;
1458 static struct view_ops blob_ops;
1459 static struct view_ops diff_ops;
1460 static struct view_ops help_ops;
1461 static struct view_ops log_ops;
1462 static struct view_ops main_ops;
1463 static struct view_ops pager_ops;
1464 static struct view_ops stage_ops;
1465 static struct view_ops status_ops;
1466 static struct view_ops tree_ops;
1467 static struct view_ops branch_ops;
1469 #define VIEW_STR(type, name, ref, ops, map, git) \
1470 { type, name, ref, ops, map, git }
1472 #define VIEW_(id, name, ops, git, ref) \
1473 VIEW_STR(VIEW_##id, name, ref, ops, KEYMAP_##id, git)
1475 static struct view views[] = {
1476 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1477 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1478 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1479 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1480 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1481 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1482 VIEW_(BRANCH, "branch", &branch_ops, TRUE, ref_head),
1483 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1484 VIEW_(PAGER, "pager", &pager_ops, FALSE, ""),
1485 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1486 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1487 };
1489 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1491 #define foreach_view(view, i) \
1492 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1494 #define view_is_displayed(view) \
1495 (view == display[0] || view == display[1])
1497 static enum request
1498 view_request(struct view *view, enum request request)
1499 {
1500 if (!view || !view->lines)
1501 return request;
1502 return view->ops->request(view, request, &view->line[view->lineno]);
1503 }
1506 /*
1507 * View drawing.
1508 */
1510 static inline void
1511 set_view_attr(struct view *view, enum line_type type)
1512 {
1513 if (!view->curline->selected && view->curtype != type) {
1514 (void) wattrset(view->win, get_line_attr(type));
1515 wchgat(view->win, -1, 0, type, NULL);
1516 view->curtype = type;
1517 }
1518 }
1520 #define VIEW_MAX_LEN(view) ((view)->width + (view)->yoffset - (view)->col)
1522 static int
1523 draw_chars(struct view *view, enum line_type type, const char *string,
1524 int max_len, bool use_tilde)
1525 {
1526 static char out_buffer[BUFSIZ * 2];
1527 int len = 0;
1528 int col = 0;
1529 int trimmed = FALSE;
1530 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1532 if (max_len <= 0)
1533 return 0;
1535 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1537 set_view_attr(view, type);
1538 if (len > 0) {
1539 if (opt_iconv_out != ICONV_NONE) {
1540 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
1541 size_t inlen = len + 1;
1543 char *outbuf = out_buffer;
1544 size_t outlen = sizeof(out_buffer);
1546 size_t ret;
1548 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1549 if (ret != (size_t) -1) {
1550 string = out_buffer;
1551 len = sizeof(out_buffer) - outlen;
1552 }
1553 }
1555 waddnstr(view->win, string, len);
1557 if (trimmed && use_tilde) {
1558 set_view_attr(view, LINE_DELIMITER);
1559 waddch(view->win, '~');
1560 col++;
1561 }
1562 }
1564 return col;
1565 }
1567 static int
1568 draw_space(struct view *view, enum line_type type, int max, int spaces)
1569 {
1570 static char space[] = " ";
1571 int col = 0;
1573 spaces = MIN(max, spaces);
1575 while (spaces > 0) {
1576 int len = MIN(spaces, sizeof(space) - 1);
1578 col += draw_chars(view, type, space, len, FALSE);
1579 spaces -= len;
1580 }
1582 return col;
1583 }
1585 static bool
1586 draw_text(struct view *view, enum line_type type, const char *string)
1587 {
1588 char text[SIZEOF_STR];
1590 do {
1591 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1593 view->col += draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE);
1594 string += pos;
1595 } while (*string && VIEW_MAX_LEN(view) > 0);
1597 return VIEW_MAX_LEN(view) <= 0;
1598 }
1600 static bool
1601 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
1602 {
1603 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1604 int max = VIEW_MAX_LEN(view);
1605 int i;
1607 if (max < size)
1608 size = max;
1610 set_view_attr(view, type);
1611 /* Using waddch() instead of waddnstr() ensures that
1612 * they'll be rendered correctly for the cursor line. */
1613 for (i = skip; i < size; i++)
1614 waddch(view->win, graphic[i]);
1616 view->col += size;
1617 if (separator) {
1618 if (size < max && skip <= size)
1619 waddch(view->win, ' ');
1620 view->col++;
1621 }
1623 return VIEW_MAX_LEN(view) <= 0;
1624 }
1626 static bool
1627 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1628 {
1629 int max = MIN(VIEW_MAX_LEN(view), len);
1630 int col;
1632 if (text)
1633 col = draw_chars(view, type, text, max - 1, trim);
1634 else
1635 col = draw_space(view, type, max - 1, max - 1);
1637 view->col += col;
1638 view->col += draw_space(view, LINE_DEFAULT, max - col, max - col);
1639 return VIEW_MAX_LEN(view) <= 0;
1640 }
1642 static bool
1643 draw_date(struct view *view, struct time *time)
1644 {
1645 const char *date = mkdate(time, opt_date);
1646 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
1648 return draw_field(view, LINE_DATE, date, cols, FALSE);
1649 }
1651 static bool
1652 draw_author(struct view *view, const char *author)
1653 {
1654 bool trim = opt_author_cols == 0 || opt_author_cols > 5;
1655 bool abbreviate = opt_author == AUTHOR_ABBREVIATED || !trim;
1657 if (abbreviate && author)
1658 author = get_author_initials(author);
1660 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
1661 }
1663 static bool
1664 draw_mode(struct view *view, mode_t mode)
1665 {
1666 const char *str;
1668 if (S_ISDIR(mode))
1669 str = "drwxr-xr-x";
1670 else if (S_ISLNK(mode))
1671 str = "lrwxrwxrwx";
1672 else if (S_ISGITLINK(mode))
1673 str = "m---------";
1674 else if (S_ISREG(mode) && mode & S_IXUSR)
1675 str = "-rwxr-xr-x";
1676 else if (S_ISREG(mode))
1677 str = "-rw-r--r--";
1678 else
1679 str = "----------";
1681 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
1682 }
1684 static bool
1685 draw_lineno(struct view *view, unsigned int lineno)
1686 {
1687 char number[10];
1688 int digits3 = view->digits < 3 ? 3 : view->digits;
1689 int max = MIN(VIEW_MAX_LEN(view), digits3);
1690 char *text = NULL;
1691 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
1693 lineno += view->offset + 1;
1694 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1695 static char fmt[] = "%1ld";
1697 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
1698 if (string_format(number, fmt, lineno))
1699 text = number;
1700 }
1701 if (text)
1702 view->col += draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
1703 else
1704 view->col += draw_space(view, LINE_LINE_NUMBER, max, digits3);
1705 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
1706 }
1708 static bool
1709 draw_view_line(struct view *view, unsigned int lineno)
1710 {
1711 struct line *line;
1712 bool selected = (view->offset + lineno == view->lineno);
1714 assert(view_is_displayed(view));
1716 if (view->offset + lineno >= view->lines)
1717 return FALSE;
1719 line = &view->line[view->offset + lineno];
1721 wmove(view->win, lineno, 0);
1722 if (line->cleareol)
1723 wclrtoeol(view->win);
1724 view->col = 0;
1725 view->curline = line;
1726 view->curtype = LINE_NONE;
1727 line->selected = FALSE;
1728 line->dirty = line->cleareol = 0;
1730 if (selected) {
1731 set_view_attr(view, LINE_CURSOR);
1732 line->selected = TRUE;
1733 view->ops->select(view, line);
1734 }
1736 return view->ops->draw(view, line, lineno);
1737 }
1739 static void
1740 redraw_view_dirty(struct view *view)
1741 {
1742 bool dirty = FALSE;
1743 int lineno;
1745 for (lineno = 0; lineno < view->height; lineno++) {
1746 if (view->offset + lineno >= view->lines)
1747 break;
1748 if (!view->line[view->offset + lineno].dirty)
1749 continue;
1750 dirty = TRUE;
1751 if (!draw_view_line(view, lineno))
1752 break;
1753 }
1755 if (!dirty)
1756 return;
1757 wnoutrefresh(view->win);
1758 }
1760 static void
1761 redraw_view_from(struct view *view, int lineno)
1762 {
1763 assert(0 <= lineno && lineno < view->height);
1765 for (; lineno < view->height; lineno++) {
1766 if (!draw_view_line(view, lineno))
1767 break;
1768 }
1770 wnoutrefresh(view->win);
1771 }
1773 static void
1774 redraw_view(struct view *view)
1775 {
1776 werase(view->win);
1777 redraw_view_from(view, 0);
1778 }
1781 static void
1782 update_view_title(struct view *view)
1783 {
1784 char buf[SIZEOF_STR];
1785 char state[SIZEOF_STR];
1786 size_t bufpos = 0, statelen = 0;
1787 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
1789 assert(view_is_displayed(view));
1791 if (view->type != VIEW_STATUS && view->lines) {
1792 unsigned int view_lines = view->offset + view->height;
1793 unsigned int lines = view->lines
1794 ? MIN(view_lines, view->lines) * 100 / view->lines
1795 : 0;
1797 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
1798 view->ops->type,
1799 view->lineno + 1,
1800 view->lines,
1801 lines);
1803 }
1805 if (view->pipe) {
1806 time_t secs = time(NULL) - view->start_time;
1808 /* Three git seconds are a long time ... */
1809 if (secs > 2)
1810 string_format_from(state, &statelen, " loading %lds", secs);
1811 }
1813 string_format_from(buf, &bufpos, "[%s]", view->name);
1814 if (*view->ref && bufpos < view->width) {
1815 size_t refsize = strlen(view->ref);
1816 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1818 if (minsize < view->width)
1819 refsize = view->width - minsize + 7;
1820 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1821 }
1823 if (statelen && bufpos < view->width) {
1824 string_format_from(buf, &bufpos, "%s", state);
1825 }
1827 if (view == display[current_view])
1828 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
1829 else
1830 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
1832 mvwaddnstr(window, 0, 0, buf, bufpos);
1833 wclrtoeol(window);
1834 wnoutrefresh(window);
1835 }
1837 static int
1838 apply_step(double step, int value)
1839 {
1840 if (step >= 1)
1841 return (int) step;
1842 value *= step + 0.01;
1843 return value ? value : 1;
1844 }
1846 static void
1847 resize_display(void)
1848 {
1849 int offset, i;
1850 struct view *base = display[0];
1851 struct view *view = display[1] ? display[1] : display[0];
1853 /* Setup window dimensions */
1855 getmaxyx(stdscr, base->height, base->width);
1857 /* Make room for the status window. */
1858 base->height -= 1;
1860 if (view != base) {
1861 /* Horizontal split. */
1862 view->width = base->width;
1863 view->height = apply_step(opt_scale_split_view, base->height);
1864 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
1865 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
1866 base->height -= view->height;
1868 /* Make room for the title bar. */
1869 view->height -= 1;
1870 }
1872 /* Make room for the title bar. */
1873 base->height -= 1;
1875 offset = 0;
1877 foreach_displayed_view (view, i) {
1878 if (!display_win[i]) {
1879 display_win[i] = newwin(view->height, view->width, offset, 0);
1880 if (!display_win[i])
1881 die("Failed to create %s view", view->name);
1883 scrollok(display_win[i], FALSE);
1885 display_title[i] = newwin(1, view->width, offset + view->height, 0);
1886 if (!display_title[i])
1887 die("Failed to create title window");
1889 } else {
1890 wresize(display_win[i], view->height, view->width);
1891 mvwin(display_win[i], offset, 0);
1892 mvwin(display_title[i], offset + view->height, 0);
1893 }
1895 view->win = display_win[i];
1897 offset += view->height + 1;
1898 }
1899 }
1901 static void
1902 redraw_display(bool clear)
1903 {
1904 struct view *view;
1905 int i;
1907 foreach_displayed_view (view, i) {
1908 if (clear)
1909 wclear(view->win);
1910 redraw_view(view);
1911 update_view_title(view);
1912 }
1913 }
1916 /*
1917 * Option management
1918 */
1920 #define TOGGLE_MENU \
1921 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
1922 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
1923 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
1924 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
1925 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
1926 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
1928 static void
1929 toggle_option(enum request request)
1930 {
1931 const struct {
1932 enum request request;
1933 const struct enum_map *map;
1934 size_t map_size;
1935 } data[] = {
1936 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
1937 TOGGLE_MENU
1938 #undef TOGGLE_
1939 };
1940 const struct menu_item menu[] = {
1941 #define TOGGLE_(id, key, help, value, map) { key, help, value },
1942 TOGGLE_MENU
1943 #undef TOGGLE_
1944 { 0 }
1945 };
1946 int i = 0;
1948 if (request == REQ_OPTIONS) {
1949 if (!prompt_menu("Toggle option", menu, &i))
1950 return;
1951 } else {
1952 while (i < ARRAY_SIZE(data) && data[i].request != request)
1953 i++;
1954 if (i >= ARRAY_SIZE(data))
1955 die("Invalid request (%d)", request);
1956 }
1958 if (data[i].map != NULL) {
1959 unsigned int *opt = menu[i].data;
1961 *opt = (*opt + 1) % data[i].map_size;
1962 redraw_display(FALSE);
1963 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
1965 } else {
1966 bool *option = menu[i].data;
1968 *option = !*option;
1969 redraw_display(FALSE);
1970 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
1971 }
1972 }
1974 static void
1975 maximize_view(struct view *view)
1976 {
1977 memset(display, 0, sizeof(display));
1978 current_view = 0;
1979 display[current_view] = view;
1980 resize_display();
1981 redraw_display(FALSE);
1982 report("");
1983 }
1986 /*
1987 * Navigation
1988 */
1990 static bool
1991 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
1992 {
1993 if (lineno >= view->lines)
1994 lineno = view->lines > 0 ? view->lines - 1 : 0;
1996 if (offset > lineno || offset + view->height <= lineno) {
1997 unsigned long half = view->height / 2;
1999 if (lineno > half)
2000 offset = lineno - half;
2001 else
2002 offset = 0;
2003 }
2005 if (offset != view->offset || lineno != view->lineno) {
2006 view->offset = offset;
2007 view->lineno = lineno;
2008 return TRUE;
2009 }
2011 return FALSE;
2012 }
2014 /* Scrolling backend */
2015 static void
2016 do_scroll_view(struct view *view, int lines)
2017 {
2018 bool redraw_current_line = FALSE;
2020 /* The rendering expects the new offset. */
2021 view->offset += lines;
2023 assert(0 <= view->offset && view->offset < view->lines);
2024 assert(lines);
2026 /* Move current line into the view. */
2027 if (view->lineno < view->offset) {
2028 view->lineno = view->offset;
2029 redraw_current_line = TRUE;
2030 } else if (view->lineno >= view->offset + view->height) {
2031 view->lineno = view->offset + view->height - 1;
2032 redraw_current_line = TRUE;
2033 }
2035 assert(view->offset <= view->lineno && view->lineno < view->lines);
2037 /* Redraw the whole screen if scrolling is pointless. */
2038 if (view->height < ABS(lines)) {
2039 redraw_view(view);
2041 } else {
2042 int line = lines > 0 ? view->height - lines : 0;
2043 int end = line + ABS(lines);
2045 scrollok(view->win, TRUE);
2046 wscrl(view->win, lines);
2047 scrollok(view->win, FALSE);
2049 while (line < end && draw_view_line(view, line))
2050 line++;
2052 if (redraw_current_line)
2053 draw_view_line(view, view->lineno - view->offset);
2054 wnoutrefresh(view->win);
2055 }
2057 view->has_scrolled = TRUE;
2058 report("");
2059 }
2061 /* Scroll frontend */
2062 static void
2063 scroll_view(struct view *view, enum request request)
2064 {
2065 int lines = 1;
2067 assert(view_is_displayed(view));
2069 switch (request) {
2070 case REQ_SCROLL_FIRST_COL:
2071 view->yoffset = 0;
2072 redraw_view_from(view, 0);
2073 report("");
2074 return;
2075 case REQ_SCROLL_LEFT:
2076 if (view->yoffset == 0) {
2077 report("Cannot scroll beyond the first column");
2078 return;
2079 }
2080 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2081 view->yoffset = 0;
2082 else
2083 view->yoffset -= apply_step(opt_hscroll, view->width);
2084 redraw_view_from(view, 0);
2085 report("");
2086 return;
2087 case REQ_SCROLL_RIGHT:
2088 view->yoffset += apply_step(opt_hscroll, view->width);
2089 redraw_view(view);
2090 report("");
2091 return;
2092 case REQ_SCROLL_PAGE_DOWN:
2093 lines = view->height;
2094 case REQ_SCROLL_LINE_DOWN:
2095 if (view->offset + lines > view->lines)
2096 lines = view->lines - view->offset;
2098 if (lines == 0 || view->offset + view->height >= view->lines) {
2099 report("Cannot scroll beyond the last line");
2100 return;
2101 }
2102 break;
2104 case REQ_SCROLL_PAGE_UP:
2105 lines = view->height;
2106 case REQ_SCROLL_LINE_UP:
2107 if (lines > view->offset)
2108 lines = view->offset;
2110 if (lines == 0) {
2111 report("Cannot scroll beyond the first line");
2112 return;
2113 }
2115 lines = -lines;
2116 break;
2118 default:
2119 die("request %d not handled in switch", request);
2120 }
2122 do_scroll_view(view, lines);
2123 }
2125 /* Cursor moving */
2126 static void
2127 move_view(struct view *view, enum request request)
2128 {
2129 int scroll_steps = 0;
2130 int steps;
2132 switch (request) {
2133 case REQ_MOVE_FIRST_LINE:
2134 steps = -view->lineno;
2135 break;
2137 case REQ_MOVE_LAST_LINE:
2138 steps = view->lines - view->lineno - 1;
2139 break;
2141 case REQ_MOVE_PAGE_UP:
2142 steps = view->height > view->lineno
2143 ? -view->lineno : -view->height;
2144 break;
2146 case REQ_MOVE_PAGE_DOWN:
2147 steps = view->lineno + view->height >= view->lines
2148 ? view->lines - view->lineno - 1 : view->height;
2149 break;
2151 case REQ_MOVE_UP:
2152 steps = -1;
2153 break;
2155 case REQ_MOVE_DOWN:
2156 steps = 1;
2157 break;
2159 default:
2160 die("request %d not handled in switch", request);
2161 }
2163 if (steps <= 0 && view->lineno == 0) {
2164 report("Cannot move beyond the first line");
2165 return;
2167 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2168 report("Cannot move beyond the last line");
2169 return;
2170 }
2172 /* Move the current line */
2173 view->lineno += steps;
2174 assert(0 <= view->lineno && view->lineno < view->lines);
2176 /* Check whether the view needs to be scrolled */
2177 if (view->lineno < view->offset ||
2178 view->lineno >= view->offset + view->height) {
2179 scroll_steps = steps;
2180 if (steps < 0 && -steps > view->offset) {
2181 scroll_steps = -view->offset;
2183 } else if (steps > 0) {
2184 if (view->lineno == view->lines - 1 &&
2185 view->lines > view->height) {
2186 scroll_steps = view->lines - view->offset - 1;
2187 if (scroll_steps >= view->height)
2188 scroll_steps -= view->height - 1;
2189 }
2190 }
2191 }
2193 if (!view_is_displayed(view)) {
2194 view->offset += scroll_steps;
2195 assert(0 <= view->offset && view->offset < view->lines);
2196 view->ops->select(view, &view->line[view->lineno]);
2197 return;
2198 }
2200 /* Repaint the old "current" line if we be scrolling */
2201 if (ABS(steps) < view->height)
2202 draw_view_line(view, view->lineno - steps - view->offset);
2204 if (scroll_steps) {
2205 do_scroll_view(view, scroll_steps);
2206 return;
2207 }
2209 /* Draw the current line */
2210 draw_view_line(view, view->lineno - view->offset);
2212 wnoutrefresh(view->win);
2213 report("");
2214 }
2217 /*
2218 * Searching
2219 */
2221 static void search_view(struct view *view, enum request request);
2223 static bool
2224 grep_text(struct view *view, const char *text[])
2225 {
2226 regmatch_t pmatch;
2227 size_t i;
2229 for (i = 0; text[i]; i++)
2230 if (*text[i] &&
2231 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2232 return TRUE;
2233 return FALSE;
2234 }
2236 static void
2237 select_view_line(struct view *view, unsigned long lineno)
2238 {
2239 unsigned long old_lineno = view->lineno;
2240 unsigned long old_offset = view->offset;
2242 if (goto_view_line(view, view->offset, lineno)) {
2243 if (view_is_displayed(view)) {
2244 if (old_offset != view->offset) {
2245 redraw_view(view);
2246 } else {
2247 draw_view_line(view, old_lineno - view->offset);
2248 draw_view_line(view, view->lineno - view->offset);
2249 wnoutrefresh(view->win);
2250 }
2251 } else {
2252 view->ops->select(view, &view->line[view->lineno]);
2253 }
2254 }
2255 }
2257 static void
2258 find_next(struct view *view, enum request request)
2259 {
2260 unsigned long lineno = view->lineno;
2261 int direction;
2263 if (!*view->grep) {
2264 if (!*opt_search)
2265 report("No previous search");
2266 else
2267 search_view(view, request);
2268 return;
2269 }
2271 switch (request) {
2272 case REQ_SEARCH:
2273 case REQ_FIND_NEXT:
2274 direction = 1;
2275 break;
2277 case REQ_SEARCH_BACK:
2278 case REQ_FIND_PREV:
2279 direction = -1;
2280 break;
2282 default:
2283 return;
2284 }
2286 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2287 lineno += direction;
2289 /* Note, lineno is unsigned long so will wrap around in which case it
2290 * will become bigger than view->lines. */
2291 for (; lineno < view->lines; lineno += direction) {
2292 if (view->ops->grep(view, &view->line[lineno])) {
2293 select_view_line(view, lineno);
2294 report("Line %ld matches '%s'", lineno + 1, view->grep);
2295 return;
2296 }
2297 }
2299 report("No match found for '%s'", view->grep);
2300 }
2302 static void
2303 search_view(struct view *view, enum request request)
2304 {
2305 int regex_err;
2307 if (view->regex) {
2308 regfree(view->regex);
2309 *view->grep = 0;
2310 } else {
2311 view->regex = calloc(1, sizeof(*view->regex));
2312 if (!view->regex)
2313 return;
2314 }
2316 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2317 if (regex_err != 0) {
2318 char buf[SIZEOF_STR] = "unknown error";
2320 regerror(regex_err, view->regex, buf, sizeof(buf));
2321 report("Search failed: %s", buf);
2322 return;
2323 }
2325 string_copy(view->grep, opt_search);
2327 find_next(view, request);
2328 }
2330 /*
2331 * Incremental updating
2332 */
2334 static void
2335 reset_view(struct view *view)
2336 {
2337 int i;
2339 for (i = 0; i < view->lines; i++)
2340 free(view->line[i].data);
2341 free(view->line);
2343 view->p_offset = view->offset;
2344 view->p_yoffset = view->yoffset;
2345 view->p_lineno = view->lineno;
2347 view->line = NULL;
2348 view->offset = 0;
2349 view->yoffset = 0;
2350 view->lines = 0;
2351 view->lineno = 0;
2352 view->vid[0] = 0;
2353 view->update_secs = 0;
2354 }
2356 static const char *
2357 format_arg(const char *name)
2358 {
2359 static struct {
2360 const char *name;
2361 size_t namelen;
2362 const char *value;
2363 const char *value_if_empty;
2364 } vars[] = {
2365 #define FORMAT_VAR(name, value, value_if_empty) \
2366 { name, STRING_SIZE(name), value, value_if_empty }
2367 FORMAT_VAR("%(directory)", opt_path, "."),
2368 FORMAT_VAR("%(file)", opt_file, ""),
2369 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2370 FORMAT_VAR("%(head)", ref_head, ""),
2371 FORMAT_VAR("%(commit)", ref_commit, ""),
2372 FORMAT_VAR("%(blob)", ref_blob, ""),
2373 FORMAT_VAR("%(branch)", ref_branch, ""),
2374 };
2375 int i;
2377 for (i = 0; i < ARRAY_SIZE(vars); i++)
2378 if (!strncmp(name, vars[i].name, vars[i].namelen))
2379 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2381 report("Unknown replacement: `%s`", name);
2382 return NULL;
2383 }
2385 static bool
2386 format_argv(const char ***dst_argv, const char *src_argv[], bool replace, bool first)
2387 {
2388 char buf[SIZEOF_STR];
2389 int argc;
2391 argv_free(*dst_argv);
2393 for (argc = 0; src_argv[argc]; argc++) {
2394 const char *arg = src_argv[argc];
2395 size_t bufpos = 0;
2397 if (!strcmp(arg, "%(fileargs)")) {
2398 if (!argv_append_array(dst_argv, opt_file_argv))
2399 break;
2400 continue;
2402 } else if (!strcmp(arg, "%(diffargs)")) {
2403 if (!argv_append_array(dst_argv, opt_diff_argv))
2404 break;
2405 continue;
2407 } else if (!strcmp(arg, "%(blameargs)")) {
2408 if (!argv_append_array(dst_argv, opt_blame_argv))
2409 break;
2410 continue;
2412 } else if (!strcmp(arg, "%(revargs)") ||
2413 (first && !strcmp(arg, "%(commit)"))) {
2414 if (!argv_append_array(dst_argv, opt_rev_argv))
2415 break;
2416 continue;
2417 }
2419 while (arg) {
2420 char *next = strstr(arg, "%(");
2421 int len = next - arg;
2422 const char *value;
2424 if (!next || !replace) {
2425 len = strlen(arg);
2426 value = "";
2428 } else {
2429 value = format_arg(next);
2431 if (!value) {
2432 return FALSE;
2433 }
2434 }
2436 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2437 return FALSE;
2439 arg = next && replace ? strchr(next, ')') + 1 : NULL;
2440 }
2442 if (!argv_append(dst_argv, buf))
2443 break;
2444 }
2446 return src_argv[argc] == NULL;
2447 }
2449 static bool
2450 restore_view_position(struct view *view)
2451 {
2452 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2453 return FALSE;
2455 /* Changing the view position cancels the restoring. */
2456 /* FIXME: Changing back to the first line is not detected. */
2457 if (view->offset != 0 || view->lineno != 0) {
2458 view->p_restore = FALSE;
2459 return FALSE;
2460 }
2462 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2463 view_is_displayed(view))
2464 werase(view->win);
2466 view->yoffset = view->p_yoffset;
2467 view->p_restore = FALSE;
2469 return TRUE;
2470 }
2472 static void
2473 end_update(struct view *view, bool force)
2474 {
2475 if (!view->pipe)
2476 return;
2477 while (!view->ops->read(view, NULL))
2478 if (!force)
2479 return;
2480 if (force)
2481 io_kill(view->pipe);
2482 io_done(view->pipe);
2483 view->pipe = NULL;
2484 }
2486 static void
2487 setup_update(struct view *view, const char *vid)
2488 {
2489 reset_view(view);
2490 string_copy_rev(view->vid, vid);
2491 view->pipe = &view->io;
2492 view->start_time = time(NULL);
2493 }
2495 static bool
2496 prepare_io(struct view *view, const char *dir, const char *argv[], bool replace)
2497 {
2498 view->dir = dir;
2499 return format_argv(&view->argv, argv, replace, !view->prev);
2500 }
2502 static bool
2503 prepare_update(struct view *view, const char *argv[], const char *dir)
2504 {
2505 if (view->pipe)
2506 end_update(view, TRUE);
2507 return prepare_io(view, dir, argv, FALSE);
2508 }
2510 static bool
2511 start_update(struct view *view, const char **argv, const char *dir)
2512 {
2513 if (view->pipe)
2514 io_done(view->pipe);
2515 return prepare_io(view, dir, argv, FALSE) &&
2516 io_run(&view->io, IO_RD, dir, view->argv);
2517 }
2519 static bool
2520 prepare_update_file(struct view *view, const char *name)
2521 {
2522 if (view->pipe)
2523 end_update(view, TRUE);
2524 argv_free(view->argv);
2525 return io_open(&view->io, "%s/%s", opt_cdup[0] ? opt_cdup : ".", name);
2526 }
2528 static bool
2529 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
2530 {
2531 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2532 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2534 if (!reload && !strcmp(view->vid, view->id))
2535 return TRUE;
2537 if (view->pipe)
2538 end_update(view, TRUE);
2540 if (!refresh) {
2541 if (!prepare_io(view, dir, argv, TRUE))
2542 return FALSE;
2544 /* Put the current ref_* value to the view title ref
2545 * member. This is needed by the blob view. Most other
2546 * views sets it automatically after loading because the
2547 * first line is a commit line. */
2548 string_copy_rev(view->ref, view->id);
2549 }
2551 if (view->argv && view->argv[0] &&
2552 !io_run(&view->io, IO_RD, view->dir, view->argv))
2553 return FALSE;
2555 setup_update(view, view->id);
2557 return TRUE;
2558 }
2560 static bool
2561 view_open(struct view *view, enum open_flags flags)
2562 {
2563 return begin_update(view, NULL, NULL, flags);
2564 }
2566 static bool
2567 update_view(struct view *view)
2568 {
2569 char out_buffer[BUFSIZ * 2];
2570 char *line;
2571 /* Clear the view and redraw everything since the tree sorting
2572 * might have rearranged things. */
2573 bool redraw = view->lines == 0;
2574 bool can_read = TRUE;
2576 if (!view->pipe)
2577 return TRUE;
2579 if (!io_can_read(view->pipe, FALSE)) {
2580 if (view->lines == 0 && view_is_displayed(view)) {
2581 time_t secs = time(NULL) - view->start_time;
2583 if (secs > 1 && secs > view->update_secs) {
2584 if (view->update_secs == 0)
2585 redraw_view(view);
2586 update_view_title(view);
2587 view->update_secs = secs;
2588 }
2589 }
2590 return TRUE;
2591 }
2593 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2594 if (opt_iconv_in != ICONV_NONE) {
2595 ICONV_CONST char *inbuf = line;
2596 size_t inlen = strlen(line) + 1;
2598 char *outbuf = out_buffer;
2599 size_t outlen = sizeof(out_buffer);
2601 size_t ret;
2603 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2604 if (ret != (size_t) -1)
2605 line = out_buffer;
2606 }
2608 if (!view->ops->read(view, line)) {
2609 report("Allocation failure");
2610 end_update(view, TRUE);
2611 return FALSE;
2612 }
2613 }
2615 {
2616 unsigned long lines = view->lines;
2617 int digits;
2619 for (digits = 0; lines; digits++)
2620 lines /= 10;
2622 /* Keep the displayed view in sync with line number scaling. */
2623 if (digits != view->digits) {
2624 view->digits = digits;
2625 if (opt_line_number || view->type == VIEW_BLAME)
2626 redraw = TRUE;
2627 }
2628 }
2630 if (io_error(view->pipe)) {
2631 report("Failed to read: %s", io_strerror(view->pipe));
2632 end_update(view, TRUE);
2634 } else if (io_eof(view->pipe)) {
2635 if (view_is_displayed(view))
2636 report("");
2637 end_update(view, FALSE);
2638 }
2640 if (restore_view_position(view))
2641 redraw = TRUE;
2643 if (!view_is_displayed(view))
2644 return TRUE;
2646 if (redraw)
2647 redraw_view_from(view, 0);
2648 else
2649 redraw_view_dirty(view);
2651 /* Update the title _after_ the redraw so that if the redraw picks up a
2652 * commit reference in view->ref it'll be available here. */
2653 update_view_title(view);
2654 return TRUE;
2655 }
2657 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2659 static struct line *
2660 add_line_data(struct view *view, void *data, enum line_type type)
2661 {
2662 struct line *line;
2664 if (!realloc_lines(&view->line, view->lines, 1))
2665 return NULL;
2667 line = &view->line[view->lines++];
2668 memset(line, 0, sizeof(*line));
2669 line->type = type;
2670 line->data = data;
2671 line->dirty = 1;
2673 return line;
2674 }
2676 static struct line *
2677 add_line_text(struct view *view, const char *text, enum line_type type)
2678 {
2679 char *data = text ? strdup(text) : NULL;
2681 return data ? add_line_data(view, data, type) : NULL;
2682 }
2684 static struct line *
2685 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2686 {
2687 char buf[SIZEOF_STR];
2688 va_list args;
2690 va_start(args, fmt);
2691 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2692 buf[0] = 0;
2693 va_end(args);
2695 return buf[0] ? add_line_text(view, buf, type) : NULL;
2696 }
2698 /*
2699 * View opening
2700 */
2702 static void
2703 open_view(struct view *prev, enum request request, enum open_flags flags)
2704 {
2705 bool split = !!(flags & OPEN_SPLIT);
2706 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2707 bool nomaximize = !!(flags & OPEN_REFRESH);
2708 struct view *view = VIEW(request);
2709 int nviews = displayed_views();
2710 struct view *base_view = display[0];
2712 if (view == prev && nviews == 1 && !reload) {
2713 report("Already in %s view", view->name);
2714 return;
2715 }
2717 if (view->git_dir && !opt_git_dir[0]) {
2718 report("The %s view is disabled in pager view", view->name);
2719 return;
2720 }
2722 if (split) {
2723 display[1] = view;
2724 current_view = 1;
2725 view->parent = prev;
2726 } else if (!nomaximize) {
2727 /* Maximize the current view. */
2728 memset(display, 0, sizeof(display));
2729 current_view = 0;
2730 display[current_view] = view;
2731 }
2733 /* No prev signals that this is the first loaded view. */
2734 if (prev && view != prev) {
2735 view->prev = prev;
2736 }
2738 /* Resize the view when switching between split- and full-screen,
2739 * or when switching between two different full-screen views. */
2740 if (nviews != displayed_views() ||
2741 (nviews == 1 && base_view != display[0]))
2742 resize_display();
2744 if (view->ops->open) {
2745 if (view->pipe)
2746 end_update(view, TRUE);
2747 if (!view->ops->open(view, flags)) {
2748 report("Failed to load %s view", view->name);
2749 return;
2750 }
2751 restore_view_position(view);
2752 }
2754 if (split && prev->lineno - prev->offset >= prev->height) {
2755 /* Take the title line into account. */
2756 int lines = prev->lineno - prev->offset - prev->height + 1;
2758 /* Scroll the view that was split if the current line is
2759 * outside the new limited view. */
2760 do_scroll_view(prev, lines);
2761 }
2763 if (prev && view != prev && split && view_is_displayed(prev)) {
2764 /* "Blur" the previous view. */
2765 update_view_title(prev);
2766 }
2768 if (view->pipe && view->lines == 0) {
2769 /* Clear the old view and let the incremental updating refill
2770 * the screen. */
2771 werase(view->win);
2772 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2773 report("");
2774 } else if (view_is_displayed(view)) {
2775 redraw_view(view);
2776 report("");
2777 }
2778 }
2780 static void
2781 open_external_viewer(const char *argv[], const char *dir)
2782 {
2783 def_prog_mode(); /* save current tty modes */
2784 endwin(); /* restore original tty modes */
2785 io_run_fg(argv, dir);
2786 fprintf(stderr, "Press Enter to continue");
2787 getc(opt_tty);
2788 reset_prog_mode();
2789 redraw_display(TRUE);
2790 }
2792 static void
2793 open_mergetool(const char *file)
2794 {
2795 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2797 open_external_viewer(mergetool_argv, opt_cdup);
2798 }
2800 static void
2801 open_editor(const char *file)
2802 {
2803 const char *editor_argv[] = { "vi", file, NULL };
2804 const char *editor;
2806 editor = getenv("GIT_EDITOR");
2807 if (!editor && *opt_editor)
2808 editor = opt_editor;
2809 if (!editor)
2810 editor = getenv("VISUAL");
2811 if (!editor)
2812 editor = getenv("EDITOR");
2813 if (!editor)
2814 editor = "vi";
2816 editor_argv[0] = editor;
2817 open_external_viewer(editor_argv, opt_cdup);
2818 }
2820 static void
2821 open_run_request(enum request request)
2822 {
2823 struct run_request *req = get_run_request(request);
2824 const char **argv = NULL;
2826 if (!req) {
2827 report("Unknown run request");
2828 return;
2829 }
2831 if (format_argv(&argv, req->argv, TRUE, FALSE))
2832 open_external_viewer(argv, NULL);
2833 if (argv)
2834 argv_free(argv);
2835 free(argv);
2836 }
2838 /*
2839 * User request switch noodle
2840 */
2842 static int
2843 view_driver(struct view *view, enum request request)
2844 {
2845 int i;
2847 if (request == REQ_NONE)
2848 return TRUE;
2850 if (request > REQ_NONE) {
2851 open_run_request(request);
2852 view_request(view, REQ_REFRESH);
2853 return TRUE;
2854 }
2856 request = view_request(view, request);
2857 if (request == REQ_NONE)
2858 return TRUE;
2860 switch (request) {
2861 case REQ_MOVE_UP:
2862 case REQ_MOVE_DOWN:
2863 case REQ_MOVE_PAGE_UP:
2864 case REQ_MOVE_PAGE_DOWN:
2865 case REQ_MOVE_FIRST_LINE:
2866 case REQ_MOVE_LAST_LINE:
2867 move_view(view, request);
2868 break;
2870 case REQ_SCROLL_FIRST_COL:
2871 case REQ_SCROLL_LEFT:
2872 case REQ_SCROLL_RIGHT:
2873 case REQ_SCROLL_LINE_DOWN:
2874 case REQ_SCROLL_LINE_UP:
2875 case REQ_SCROLL_PAGE_DOWN:
2876 case REQ_SCROLL_PAGE_UP:
2877 scroll_view(view, request);
2878 break;
2880 case REQ_VIEW_BLAME:
2881 if (!opt_file[0]) {
2882 report("No file chosen, press %s to open tree view",
2883 get_key(view->keymap, REQ_VIEW_TREE));
2884 break;
2885 }
2886 open_view(view, request, OPEN_DEFAULT);
2887 break;
2889 case REQ_VIEW_BLOB:
2890 if (!ref_blob[0]) {
2891 report("No file chosen, press %s to open tree view",
2892 get_key(view->keymap, REQ_VIEW_TREE));
2893 break;
2894 }
2895 open_view(view, request, OPEN_DEFAULT);
2896 break;
2898 case REQ_VIEW_PAGER:
2899 if (view == NULL) {
2900 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2901 die("Failed to open stdin");
2902 open_view(view, request, OPEN_PREPARED);
2903 break;
2904 }
2906 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2907 report("No pager content, press %s to run command from prompt",
2908 get_key(view->keymap, REQ_PROMPT));
2909 break;
2910 }
2911 open_view(view, request, OPEN_DEFAULT);
2912 break;
2914 case REQ_VIEW_STAGE:
2915 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2916 report("No stage content, press %s to open the status view and choose file",
2917 get_key(view->keymap, REQ_VIEW_STATUS));
2918 break;
2919 }
2920 open_view(view, request, OPEN_DEFAULT);
2921 break;
2923 case REQ_VIEW_STATUS:
2924 if (opt_is_inside_work_tree == FALSE) {
2925 report("The status view requires a working tree");
2926 break;
2927 }
2928 open_view(view, request, OPEN_DEFAULT);
2929 break;
2931 case REQ_VIEW_MAIN:
2932 case REQ_VIEW_DIFF:
2933 case REQ_VIEW_LOG:
2934 case REQ_VIEW_TREE:
2935 case REQ_VIEW_HELP:
2936 case REQ_VIEW_BRANCH:
2937 open_view(view, request, OPEN_DEFAULT);
2938 break;
2940 case REQ_NEXT:
2941 case REQ_PREVIOUS:
2942 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2944 if (view->parent) {
2945 int line;
2947 view = view->parent;
2948 line = view->lineno;
2949 move_view(view, request);
2950 if (view_is_displayed(view))
2951 update_view_title(view);
2952 if (line != view->lineno)
2953 view_request(view, REQ_ENTER);
2954 } else {
2955 move_view(view, request);
2956 }
2957 break;
2959 case REQ_VIEW_NEXT:
2960 {
2961 int nviews = displayed_views();
2962 int next_view = (current_view + 1) % nviews;
2964 if (next_view == current_view) {
2965 report("Only one view is displayed");
2966 break;
2967 }
2969 current_view = next_view;
2970 /* Blur out the title of the previous view. */
2971 update_view_title(view);
2972 report("");
2973 break;
2974 }
2975 case REQ_REFRESH:
2976 report("Refreshing is not yet supported for the %s view", view->name);
2977 break;
2979 case REQ_MAXIMIZE:
2980 if (displayed_views() == 2)
2981 maximize_view(view);
2982 break;
2984 case REQ_OPTIONS:
2985 case REQ_TOGGLE_LINENO:
2986 case REQ_TOGGLE_DATE:
2987 case REQ_TOGGLE_AUTHOR:
2988 case REQ_TOGGLE_GRAPHIC:
2989 case REQ_TOGGLE_REV_GRAPH:
2990 case REQ_TOGGLE_REFS:
2991 toggle_option(request);
2992 break;
2994 case REQ_TOGGLE_SORT_FIELD:
2995 case REQ_TOGGLE_SORT_ORDER:
2996 report("Sorting is not yet supported for the %s view", view->name);
2997 break;
2999 case REQ_SEARCH:
3000 case REQ_SEARCH_BACK:
3001 search_view(view, request);
3002 break;
3004 case REQ_FIND_NEXT:
3005 case REQ_FIND_PREV:
3006 find_next(view, request);
3007 break;
3009 case REQ_STOP_LOADING:
3010 foreach_view(view, i) {
3011 if (view->pipe)
3012 report("Stopped loading the %s view", view->name),
3013 end_update(view, TRUE);
3014 }
3015 break;
3017 case REQ_SHOW_VERSION:
3018 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3019 return TRUE;
3021 case REQ_SCREEN_REDRAW:
3022 redraw_display(TRUE);
3023 break;
3025 case REQ_EDIT:
3026 report("Nothing to edit");
3027 break;
3029 case REQ_ENTER:
3030 report("Nothing to enter");
3031 break;
3033 case REQ_VIEW_CLOSE:
3034 /* XXX: Mark closed views by letting view->prev point to the
3035 * view itself. Parents to closed view should never be
3036 * followed. */
3037 if (view->prev && view->prev != view) {
3038 maximize_view(view->prev);
3039 view->prev = view;
3040 break;
3041 }
3042 /* Fall-through */
3043 case REQ_QUIT:
3044 return FALSE;
3046 default:
3047 report("Unknown key, press %s for help",
3048 get_key(view->keymap, REQ_VIEW_HELP));
3049 return TRUE;
3050 }
3052 return TRUE;
3053 }
3056 /*
3057 * View backend utilities
3058 */
3060 enum sort_field {
3061 ORDERBY_NAME,
3062 ORDERBY_DATE,
3063 ORDERBY_AUTHOR,
3064 };
3066 struct sort_state {
3067 const enum sort_field *fields;
3068 size_t size, current;
3069 bool reverse;
3070 };
3072 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3073 #define get_sort_field(state) ((state).fields[(state).current])
3074 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3076 static void
3077 sort_view(struct view *view, enum request request, struct sort_state *state,
3078 int (*compare)(const void *, const void *))
3079 {
3080 switch (request) {
3081 case REQ_TOGGLE_SORT_FIELD:
3082 state->current = (state->current + 1) % state->size;
3083 break;
3085 case REQ_TOGGLE_SORT_ORDER:
3086 state->reverse = !state->reverse;
3087 break;
3088 default:
3089 die("Not a sort request");
3090 }
3092 qsort(view->line, view->lines, sizeof(*view->line), compare);
3093 redraw_view(view);
3094 }
3096 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3098 /* Small author cache to reduce memory consumption. It uses binary
3099 * search to lookup or find place to position new entries. No entries
3100 * are ever freed. */
3101 static const char *
3102 get_author(const char *name)
3103 {
3104 static const char **authors;
3105 static size_t authors_size;
3106 int from = 0, to = authors_size - 1;
3108 while (from <= to) {
3109 size_t pos = (to + from) / 2;
3110 int cmp = strcmp(name, authors[pos]);
3112 if (!cmp)
3113 return authors[pos];
3115 if (cmp < 0)
3116 to = pos - 1;
3117 else
3118 from = pos + 1;
3119 }
3121 if (!realloc_authors(&authors, authors_size, 1))
3122 return NULL;
3123 name = strdup(name);
3124 if (!name)
3125 return NULL;
3127 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3128 authors[from] = name;
3129 authors_size++;
3131 return name;
3132 }
3134 static void
3135 parse_timesec(struct time *time, const char *sec)
3136 {
3137 time->sec = (time_t) atol(sec);
3138 }
3140 static void
3141 parse_timezone(struct time *time, const char *zone)
3142 {
3143 long tz;
3145 tz = ('0' - zone[1]) * 60 * 60 * 10;
3146 tz += ('0' - zone[2]) * 60 * 60;
3147 tz += ('0' - zone[3]) * 60 * 10;
3148 tz += ('0' - zone[4]) * 60;
3150 if (zone[0] == '-')
3151 tz = -tz;
3153 time->tz = tz;
3154 time->sec -= tz;
3155 }
3157 /* Parse author lines where the name may be empty:
3158 * author <email@address.tld> 1138474660 +0100
3159 */
3160 static void
3161 parse_author_line(char *ident, const char **author, struct time *time)
3162 {
3163 char *nameend = strchr(ident, '<');
3164 char *emailend = strchr(ident, '>');
3166 if (nameend && emailend)
3167 *nameend = *emailend = 0;
3168 ident = chomp_string(ident);
3169 if (!*ident) {
3170 if (nameend)
3171 ident = chomp_string(nameend + 1);
3172 if (!*ident)
3173 ident = "Unknown";
3174 }
3176 *author = get_author(ident);
3178 /* Parse epoch and timezone */
3179 if (emailend && emailend[1] == ' ') {
3180 char *secs = emailend + 2;
3181 char *zone = strchr(secs, ' ');
3183 parse_timesec(time, secs);
3185 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3186 parse_timezone(time, zone + 1);
3187 }
3188 }
3190 /*
3191 * Pager backend
3192 */
3194 static bool
3195 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3196 {
3197 if (opt_line_number && draw_lineno(view, lineno))
3198 return TRUE;
3200 draw_text(view, line->type, line->data);
3201 return TRUE;
3202 }
3204 static bool
3205 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3206 {
3207 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3208 char ref[SIZEOF_STR];
3210 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3211 return TRUE;
3213 /* This is the only fatal call, since it can "corrupt" the buffer. */
3214 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3215 return FALSE;
3217 return TRUE;
3218 }
3220 static void
3221 add_pager_refs(struct view *view, struct line *line)
3222 {
3223 char buf[SIZEOF_STR];
3224 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3225 struct ref_list *list;
3226 size_t bufpos = 0, i;
3227 const char *sep = "Refs: ";
3228 bool is_tag = FALSE;
3230 assert(line->type == LINE_COMMIT);
3232 list = get_ref_list(commit_id);
3233 if (!list) {
3234 if (view->type == VIEW_DIFF)
3235 goto try_add_describe_ref;
3236 return;
3237 }
3239 for (i = 0; i < list->size; i++) {
3240 struct ref *ref = list->refs[i];
3241 const char *fmt = ref->tag ? "%s[%s]" :
3242 ref->remote ? "%s<%s>" : "%s%s";
3244 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3245 return;
3246 sep = ", ";
3247 if (ref->tag)
3248 is_tag = TRUE;
3249 }
3251 if (!is_tag && view->type == VIEW_DIFF) {
3252 try_add_describe_ref:
3253 /* Add <tag>-g<commit_id> "fake" reference. */
3254 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3255 return;
3256 }
3258 if (bufpos == 0)
3259 return;
3261 add_line_text(view, buf, LINE_PP_REFS);
3262 }
3264 static bool
3265 pager_read(struct view *view, char *data)
3266 {
3267 struct line *line;
3269 if (!data)
3270 return TRUE;
3272 line = add_line_text(view, data, get_line_type(data));
3273 if (!line)
3274 return FALSE;
3276 if (line->type == LINE_COMMIT &&
3277 (view->type == VIEW_DIFF ||
3278 view->type == VIEW_LOG))
3279 add_pager_refs(view, line);
3281 return TRUE;
3282 }
3284 static enum request
3285 pager_request(struct view *view, enum request request, struct line *line)
3286 {
3287 int split = 0;
3289 if (request != REQ_ENTER)
3290 return request;
3292 if (line->type == LINE_COMMIT &&
3293 (view->type == VIEW_LOG ||
3294 view->type == VIEW_PAGER)) {
3295 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3296 split = 1;
3297 }
3299 /* Always scroll the view even if it was split. That way
3300 * you can use Enter to scroll through the log view and
3301 * split open each commit diff. */
3302 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3304 /* FIXME: A minor workaround. Scrolling the view will call report("")
3305 * but if we are scrolling a non-current view this won't properly
3306 * update the view title. */
3307 if (split)
3308 update_view_title(view);
3310 return REQ_NONE;
3311 }
3313 static bool
3314 pager_grep(struct view *view, struct line *line)
3315 {
3316 const char *text[] = { line->data, NULL };
3318 return grep_text(view, text);
3319 }
3321 static void
3322 pager_select(struct view *view, struct line *line)
3323 {
3324 if (line->type == LINE_COMMIT) {
3325 char *text = (char *)line->data + STRING_SIZE("commit ");
3327 if (view->type != VIEW_PAGER)
3328 string_copy_rev(view->ref, text);
3329 string_copy_rev(ref_commit, text);
3330 }
3331 }
3333 static struct view_ops pager_ops = {
3334 "line",
3335 view_open,
3336 pager_read,
3337 pager_draw,
3338 pager_request,
3339 pager_grep,
3340 pager_select,
3341 };
3343 static bool
3344 log_open(struct view *view, enum open_flags flags)
3345 {
3346 static const char *log_argv[] = {
3347 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3348 };
3350 return begin_update(view, NULL, log_argv, flags);
3351 }
3353 static enum request
3354 log_request(struct view *view, enum request request, struct line *line)
3355 {
3356 switch (request) {
3357 case REQ_REFRESH:
3358 load_refs();
3359 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3360 return REQ_NONE;
3361 default:
3362 return pager_request(view, request, line);
3363 }
3364 }
3366 static struct view_ops log_ops = {
3367 "line",
3368 log_open,
3369 pager_read,
3370 pager_draw,
3371 log_request,
3372 pager_grep,
3373 pager_select,
3374 };
3376 static bool
3377 diff_open(struct view *view, enum open_flags flags)
3378 {
3379 static const char *diff_argv[] = {
3380 "git", "show", "--pretty=fuller", "--no-color", "--root",
3381 "--patch-with-stat", "--find-copies-harder", "-C",
3382 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3383 };
3385 return begin_update(view, NULL, diff_argv, flags);
3386 }
3388 static bool
3389 diff_read(struct view *view, char *data)
3390 {
3391 if (!data) {
3392 /* Fall back to retry if no diff will be shown. */
3393 if (view->lines == 0 && opt_file_argv) {
3394 int pos = argv_size(view->argv)
3395 - argv_size(opt_file_argv) - 1;
3397 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3398 for (; view->argv[pos]; pos++) {
3399 free((void *) view->argv[pos]);
3400 view->argv[pos] = NULL;
3401 }
3403 if (view->pipe)
3404 io_done(view->pipe);
3405 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3406 return FALSE;
3407 }
3408 }
3409 return TRUE;
3410 }
3412 return pager_read(view, data);
3413 }
3415 static struct view_ops diff_ops = {
3416 "line",
3417 diff_open,
3418 diff_read,
3419 pager_draw,
3420 pager_request,
3421 pager_grep,
3422 pager_select,
3423 };
3425 /*
3426 * Help backend
3427 */
3429 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
3431 static bool
3432 help_open_keymap_title(struct view *view, enum keymap keymap)
3433 {
3434 struct line *line;
3436 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3437 help_keymap_hidden[keymap] ? '+' : '-',
3438 enum_name(keymap_table[keymap]));
3439 if (line)
3440 line->other = keymap;
3442 return help_keymap_hidden[keymap];
3443 }
3445 static void
3446 help_open_keymap(struct view *view, enum keymap keymap)
3447 {
3448 const char *group = NULL;
3449 char buf[SIZEOF_STR];
3450 size_t bufpos;
3451 bool add_title = TRUE;
3452 int i;
3454 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3455 const char *key = NULL;
3457 if (req_info[i].request == REQ_NONE)
3458 continue;
3460 if (!req_info[i].request) {
3461 group = req_info[i].help;
3462 continue;
3463 }
3465 key = get_keys(keymap, req_info[i].request, TRUE);
3466 if (!key || !*key)
3467 continue;
3469 if (add_title && help_open_keymap_title(view, keymap))
3470 return;
3471 add_title = FALSE;
3473 if (group) {
3474 add_line_text(view, group, LINE_HELP_GROUP);
3475 group = NULL;
3476 }
3478 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3479 enum_name(req_info[i]), req_info[i].help);
3480 }
3482 group = "External commands:";
3484 for (i = 0; i < run_requests; i++) {
3485 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3486 const char *key;
3487 int argc;
3489 if (!req || req->keymap != keymap)
3490 continue;
3492 key = get_key_name(req->key);
3493 if (!*key)
3494 key = "(no key defined)";
3496 if (add_title && help_open_keymap_title(view, keymap))
3497 return;
3498 if (group) {
3499 add_line_text(view, group, LINE_HELP_GROUP);
3500 group = NULL;
3501 }
3503 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3504 if (!string_format_from(buf, &bufpos, "%s%s",
3505 argc ? " " : "", req->argv[argc]))
3506 return;
3508 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3509 }
3510 }
3512 static bool
3513 help_open(struct view *view, enum open_flags flags)
3514 {
3515 enum keymap keymap;
3517 reset_view(view);
3518 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3519 add_line_text(view, "", LINE_DEFAULT);
3521 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
3522 help_open_keymap(view, keymap);
3524 return TRUE;
3525 }
3527 static enum request
3528 help_request(struct view *view, enum request request, struct line *line)
3529 {
3530 switch (request) {
3531 case REQ_ENTER:
3532 if (line->type == LINE_HELP_KEYMAP) {
3533 help_keymap_hidden[line->other] =
3534 !help_keymap_hidden[line->other];
3535 view->p_restore = TRUE;
3536 open_view(view, REQ_VIEW_HELP, OPEN_REFRESH);
3537 }
3539 return REQ_NONE;
3540 default:
3541 return pager_request(view, request, line);
3542 }
3543 }
3545 static struct view_ops help_ops = {
3546 "line",
3547 help_open,
3548 NULL,
3549 pager_draw,
3550 help_request,
3551 pager_grep,
3552 pager_select,
3553 };
3556 /*
3557 * Tree backend
3558 */
3560 struct tree_stack_entry {
3561 struct tree_stack_entry *prev; /* Entry below this in the stack */
3562 unsigned long lineno; /* Line number to restore */
3563 char *name; /* Position of name in opt_path */
3564 };
3566 /* The top of the path stack. */
3567 static struct tree_stack_entry *tree_stack = NULL;
3568 unsigned long tree_lineno = 0;
3570 static void
3571 pop_tree_stack_entry(void)
3572 {
3573 struct tree_stack_entry *entry = tree_stack;
3575 tree_lineno = entry->lineno;
3576 entry->name[0] = 0;
3577 tree_stack = entry->prev;
3578 free(entry);
3579 }
3581 static void
3582 push_tree_stack_entry(const char *name, unsigned long lineno)
3583 {
3584 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3585 size_t pathlen = strlen(opt_path);
3587 if (!entry)
3588 return;
3590 entry->prev = tree_stack;
3591 entry->name = opt_path + pathlen;
3592 tree_stack = entry;
3594 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3595 pop_tree_stack_entry();
3596 return;
3597 }
3599 /* Move the current line to the first tree entry. */
3600 tree_lineno = 1;
3601 entry->lineno = lineno;
3602 }
3604 /* Parse output from git-ls-tree(1):
3605 *
3606 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3607 */
3609 #define SIZEOF_TREE_ATTR \
3610 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3612 #define SIZEOF_TREE_MODE \
3613 STRING_SIZE("100644 ")
3615 #define TREE_ID_OFFSET \
3616 STRING_SIZE("100644 blob ")
3618 struct tree_entry {
3619 char id[SIZEOF_REV];
3620 mode_t mode;
3621 struct time time; /* Date from the author ident. */
3622 const char *author; /* Author of the commit. */
3623 char name[1];
3624 };
3626 static const char *
3627 tree_path(const struct line *line)
3628 {
3629 return ((struct tree_entry *) line->data)->name;
3630 }
3632 static int
3633 tree_compare_entry(const struct line *line1, const struct line *line2)
3634 {
3635 if (line1->type != line2->type)
3636 return line1->type == LINE_TREE_DIR ? -1 : 1;
3637 return strcmp(tree_path(line1), tree_path(line2));
3638 }
3640 static const enum sort_field tree_sort_fields[] = {
3641 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3642 };
3643 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3645 static int
3646 tree_compare(const void *l1, const void *l2)
3647 {
3648 const struct line *line1 = (const struct line *) l1;
3649 const struct line *line2 = (const struct line *) l2;
3650 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3651 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3653 if (line1->type == LINE_TREE_HEAD)
3654 return -1;
3655 if (line2->type == LINE_TREE_HEAD)
3656 return 1;
3658 switch (get_sort_field(tree_sort_state)) {
3659 case ORDERBY_DATE:
3660 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3662 case ORDERBY_AUTHOR:
3663 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3665 case ORDERBY_NAME:
3666 default:
3667 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3668 }
3669 }
3672 static struct line *
3673 tree_entry(struct view *view, enum line_type type, const char *path,
3674 const char *mode, const char *id)
3675 {
3676 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3677 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3679 if (!entry || !line) {
3680 free(entry);
3681 return NULL;
3682 }
3684 strncpy(entry->name, path, strlen(path));
3685 if (mode)
3686 entry->mode = strtoul(mode, NULL, 8);
3687 if (id)
3688 string_copy_rev(entry->id, id);
3690 return line;
3691 }
3693 static bool
3694 tree_read_date(struct view *view, char *text, bool *read_date)
3695 {
3696 static const char *author_name;
3697 static struct time author_time;
3699 if (!text && *read_date) {
3700 *read_date = FALSE;
3701 return TRUE;
3703 } else if (!text) {
3704 char *path = *opt_path ? opt_path : ".";
3705 /* Find next entry to process */
3706 const char *log_file[] = {
3707 "git", "log", "--no-color", "--pretty=raw",
3708 "--cc", "--raw", view->id, "--", path, NULL
3709 };
3711 if (!view->lines) {
3712 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3713 report("Tree is empty");
3714 return TRUE;
3715 }
3717 if (!start_update(view, log_file, opt_cdup)) {
3718 report("Failed to load tree data");
3719 return TRUE;
3720 }
3722 *read_date = TRUE;
3723 return FALSE;
3725 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3726 parse_author_line(text + STRING_SIZE("author "),
3727 &author_name, &author_time);
3729 } else if (*text == ':') {
3730 char *pos;
3731 size_t annotated = 1;
3732 size_t i;
3734 pos = strchr(text, '\t');
3735 if (!pos)
3736 return TRUE;
3737 text = pos + 1;
3738 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3739 text += strlen(opt_path);
3740 pos = strchr(text, '/');
3741 if (pos)
3742 *pos = 0;
3744 for (i = 1; i < view->lines; i++) {
3745 struct line *line = &view->line[i];
3746 struct tree_entry *entry = line->data;
3748 annotated += !!entry->author;
3749 if (entry->author || strcmp(entry->name, text))
3750 continue;
3752 entry->author = author_name;
3753 entry->time = author_time;
3754 line->dirty = 1;
3755 break;
3756 }
3758 if (annotated == view->lines)
3759 io_kill(view->pipe);
3760 }
3761 return TRUE;
3762 }
3764 static bool
3765 tree_read(struct view *view, char *text)
3766 {
3767 static bool read_date = FALSE;
3768 struct tree_entry *data;
3769 struct line *entry, *line;
3770 enum line_type type;
3771 size_t textlen = text ? strlen(text) : 0;
3772 char *path = text + SIZEOF_TREE_ATTR;
3774 if (read_date || !text)
3775 return tree_read_date(view, text, &read_date);
3777 if (textlen <= SIZEOF_TREE_ATTR)
3778 return FALSE;
3779 if (view->lines == 0 &&
3780 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3781 return FALSE;
3783 /* Strip the path part ... */
3784 if (*opt_path) {
3785 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3786 size_t striplen = strlen(opt_path);
3788 if (pathlen > striplen)
3789 memmove(path, path + striplen,
3790 pathlen - striplen + 1);
3792 /* Insert "link" to parent directory. */
3793 if (view->lines == 1 &&
3794 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3795 return FALSE;
3796 }
3798 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3799 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3800 if (!entry)
3801 return FALSE;
3802 data = entry->data;
3804 /* Skip "Directory ..." and ".." line. */
3805 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3806 if (tree_compare_entry(line, entry) <= 0)
3807 continue;
3809 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3811 line->data = data;
3812 line->type = type;
3813 for (; line <= entry; line++)
3814 line->dirty = line->cleareol = 1;
3815 return TRUE;
3816 }
3818 if (tree_lineno > view->lineno) {
3819 view->lineno = tree_lineno;
3820 tree_lineno = 0;
3821 }
3823 return TRUE;
3824 }
3826 static bool
3827 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3828 {
3829 struct tree_entry *entry = line->data;
3831 if (line->type == LINE_TREE_HEAD) {
3832 if (draw_text(view, line->type, "Directory path /"))
3833 return TRUE;
3834 } else {
3835 if (draw_mode(view, entry->mode))
3836 return TRUE;
3838 if (opt_author && draw_author(view, entry->author))
3839 return TRUE;
3841 if (opt_date && draw_date(view, &entry->time))
3842 return TRUE;
3843 }
3845 draw_text(view, line->type, entry->name);
3846 return TRUE;
3847 }
3849 static void
3850 open_blob_editor(const char *id)
3851 {
3852 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3853 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3854 int fd = mkstemp(file);
3856 if (fd == -1)
3857 report("Failed to create temporary file");
3858 else if (!io_run_append(blob_argv, fd))
3859 report("Failed to save blob data to file");
3860 else
3861 open_editor(file);
3862 if (fd != -1)
3863 unlink(file);
3864 }
3866 static enum request
3867 tree_request(struct view *view, enum request request, struct line *line)
3868 {
3869 enum open_flags flags;
3870 struct tree_entry *entry = line->data;
3872 switch (request) {
3873 case REQ_VIEW_BLAME:
3874 if (line->type != LINE_TREE_FILE) {
3875 report("Blame only supported for files");
3876 return REQ_NONE;
3877 }
3879 string_copy(opt_ref, view->vid);
3880 return request;
3882 case REQ_EDIT:
3883 if (line->type != LINE_TREE_FILE) {
3884 report("Edit only supported for files");
3885 } else if (!is_head_commit(view->vid)) {
3886 open_blob_editor(entry->id);
3887 } else {
3888 open_editor(opt_file);
3889 }
3890 return REQ_NONE;
3892 case REQ_TOGGLE_SORT_FIELD:
3893 case REQ_TOGGLE_SORT_ORDER:
3894 sort_view(view, request, &tree_sort_state, tree_compare);
3895 return REQ_NONE;
3897 case REQ_PARENT:
3898 if (!*opt_path) {
3899 /* quit view if at top of tree */
3900 return REQ_VIEW_CLOSE;
3901 }
3902 /* fake 'cd ..' */
3903 line = &view->line[1];
3904 break;
3906 case REQ_ENTER:
3907 break;
3909 default:
3910 return request;
3911 }
3913 /* Cleanup the stack if the tree view is at a different tree. */
3914 while (!*opt_path && tree_stack)
3915 pop_tree_stack_entry();
3917 switch (line->type) {
3918 case LINE_TREE_DIR:
3919 /* Depending on whether it is a subdirectory or parent link
3920 * mangle the path buffer. */
3921 if (line == &view->line[1] && *opt_path) {
3922 pop_tree_stack_entry();
3924 } else {
3925 const char *basename = tree_path(line);
3927 push_tree_stack_entry(basename, view->lineno);
3928 }
3930 /* Trees and subtrees share the same ID, so they are not not
3931 * unique like blobs. */
3932 flags = OPEN_RELOAD;
3933 request = REQ_VIEW_TREE;
3934 break;
3936 case LINE_TREE_FILE:
3937 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3938 request = REQ_VIEW_BLOB;
3939 break;
3941 default:
3942 return REQ_NONE;
3943 }
3945 open_view(view, request, flags);
3946 if (request == REQ_VIEW_TREE)
3947 view->lineno = tree_lineno;
3949 return REQ_NONE;
3950 }
3952 static bool
3953 tree_grep(struct view *view, struct line *line)
3954 {
3955 struct tree_entry *entry = line->data;
3956 const char *text[] = {
3957 entry->name,
3958 opt_author ? entry->author : "",
3959 mkdate(&entry->time, opt_date),
3960 NULL
3961 };
3963 return grep_text(view, text);
3964 }
3966 static void
3967 tree_select(struct view *view, struct line *line)
3968 {
3969 struct tree_entry *entry = line->data;
3971 if (line->type == LINE_TREE_FILE) {
3972 string_copy_rev(ref_blob, entry->id);
3973 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3975 } else if (line->type != LINE_TREE_DIR) {
3976 return;
3977 }
3979 string_copy_rev(view->ref, entry->id);
3980 }
3982 static bool
3983 tree_open(struct view *view, enum open_flags flags)
3984 {
3985 static const char *tree_argv[] = {
3986 "git", "ls-tree", "%(commit)", "%(directory)", NULL
3987 };
3989 if (view->lines == 0 && opt_prefix[0]) {
3990 char *pos = opt_prefix;
3992 while (pos && *pos) {
3993 char *end = strchr(pos, '/');
3995 if (end)
3996 *end = 0;
3997 push_tree_stack_entry(pos, 0);
3998 pos = end;
3999 if (end) {
4000 *end = '/';
4001 pos++;
4002 }
4003 }
4005 } else if (strcmp(view->vid, view->id)) {
4006 opt_path[0] = 0;
4007 }
4009 return begin_update(view, opt_cdup, tree_argv, flags);
4010 }
4012 static struct view_ops tree_ops = {
4013 "file",
4014 tree_open,
4015 tree_read,
4016 tree_draw,
4017 tree_request,
4018 tree_grep,
4019 tree_select,
4020 };
4022 static bool
4023 blob_open(struct view *view, enum open_flags flags)
4024 {
4025 static const char *blob_argv[] = {
4026 "git", "cat-file", "blob", "%(blob)", NULL
4027 };
4029 return begin_update(view, NULL, blob_argv, flags);
4030 }
4032 static bool
4033 blob_read(struct view *view, char *line)
4034 {
4035 if (!line)
4036 return TRUE;
4037 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4038 }
4040 static enum request
4041 blob_request(struct view *view, enum request request, struct line *line)
4042 {
4043 switch (request) {
4044 case REQ_EDIT:
4045 open_blob_editor(view->vid);
4046 return REQ_NONE;
4047 default:
4048 return pager_request(view, request, line);
4049 }
4050 }
4052 static struct view_ops blob_ops = {
4053 "line",
4054 blob_open,
4055 blob_read,
4056 pager_draw,
4057 blob_request,
4058 pager_grep,
4059 pager_select,
4060 };
4062 /*
4063 * Blame backend
4064 *
4065 * Loading the blame view is a two phase job:
4066 *
4067 * 1. File content is read either using opt_file from the
4068 * filesystem or using git-cat-file.
4069 * 2. Then blame information is incrementally added by
4070 * reading output from git-blame.
4071 */
4073 struct blame_commit {
4074 char id[SIZEOF_REV]; /* SHA1 ID. */
4075 char title[128]; /* First line of the commit message. */
4076 const char *author; /* Author of the commit. */
4077 struct time time; /* Date from the author ident. */
4078 char filename[128]; /* Name of file. */
4079 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4080 char parent_filename[128]; /* Parent/previous name of file. */
4081 };
4083 struct blame {
4084 struct blame_commit *commit;
4085 unsigned long lineno;
4086 char text[1];
4087 };
4089 static bool
4090 blame_open(struct view *view, enum open_flags flags)
4091 {
4092 char path[SIZEOF_STR];
4093 size_t i;
4095 if (!view->prev && *opt_prefix) {
4096 string_copy(path, opt_file);
4097 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4098 return FALSE;
4099 }
4101 if (*opt_ref || !io_open(&view->io, "%s%s", opt_cdup, opt_file)) {
4102 const char *blame_cat_file_argv[] = {
4103 "git", "cat-file", "blob", path, NULL
4104 };
4106 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4107 !start_update(view, blame_cat_file_argv, opt_cdup))
4108 return FALSE;
4109 }
4111 /* First pass: remove multiple references to the same commit. */
4112 for (i = 0; i < view->lines; i++) {
4113 struct blame *blame = view->line[i].data;
4115 if (blame->commit && blame->commit->id[0])
4116 blame->commit->id[0] = 0;
4117 else
4118 blame->commit = NULL;
4119 }
4121 /* Second pass: free existing references. */
4122 for (i = 0; i < view->lines; i++) {
4123 struct blame *blame = view->line[i].data;
4125 if (blame->commit)
4126 free(blame->commit);
4127 }
4129 setup_update(view, opt_file);
4130 string_format(view->ref, "%s ...", opt_file);
4132 return TRUE;
4133 }
4135 static struct blame_commit *
4136 get_blame_commit(struct view *view, const char *id)
4137 {
4138 size_t i;
4140 for (i = 0; i < view->lines; i++) {
4141 struct blame *blame = view->line[i].data;
4143 if (!blame->commit)
4144 continue;
4146 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4147 return blame->commit;
4148 }
4150 {
4151 struct blame_commit *commit = calloc(1, sizeof(*commit));
4153 if (commit)
4154 string_ncopy(commit->id, id, SIZEOF_REV);
4155 return commit;
4156 }
4157 }
4159 static bool
4160 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4161 {
4162 const char *pos = *posref;
4164 *posref = NULL;
4165 pos = strchr(pos + 1, ' ');
4166 if (!pos || !isdigit(pos[1]))
4167 return FALSE;
4168 *number = atoi(pos + 1);
4169 if (*number < min || *number > max)
4170 return FALSE;
4172 *posref = pos;
4173 return TRUE;
4174 }
4176 static struct blame_commit *
4177 parse_blame_commit(struct view *view, const char *text, int *blamed)
4178 {
4179 struct blame_commit *commit;
4180 struct blame *blame;
4181 const char *pos = text + SIZEOF_REV - 2;
4182 size_t orig_lineno = 0;
4183 size_t lineno;
4184 size_t group;
4186 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4187 return NULL;
4189 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4190 !parse_number(&pos, &lineno, 1, view->lines) ||
4191 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4192 return NULL;
4194 commit = get_blame_commit(view, text);
4195 if (!commit)
4196 return NULL;
4198 *blamed += group;
4199 while (group--) {
4200 struct line *line = &view->line[lineno + group - 1];
4202 blame = line->data;
4203 blame->commit = commit;
4204 blame->lineno = orig_lineno + group - 1;
4205 line->dirty = 1;
4206 }
4208 return commit;
4209 }
4211 static bool
4212 blame_read_file(struct view *view, const char *line, bool *read_file)
4213 {
4214 if (!line) {
4215 const char *blame_argv[] = {
4216 "git", "blame", "%(blameargs)", "--incremental",
4217 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4218 };
4220 if (view->lines == 0 && !view->prev)
4221 die("No blame exist for %s", view->vid);
4223 if (view->lines == 0 || !start_update(view, blame_argv, opt_cdup)) {
4224 report("Failed to load blame data");
4225 return TRUE;
4226 }
4228 *read_file = FALSE;
4229 return FALSE;
4231 } else {
4232 size_t linelen = strlen(line);
4233 struct blame *blame = malloc(sizeof(*blame) + linelen);
4235 if (!blame)
4236 return FALSE;
4238 blame->commit = NULL;
4239 strncpy(blame->text, line, linelen);
4240 blame->text[linelen] = 0;
4241 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4242 }
4243 }
4245 static bool
4246 match_blame_header(const char *name, char **line)
4247 {
4248 size_t namelen = strlen(name);
4249 bool matched = !strncmp(name, *line, namelen);
4251 if (matched)
4252 *line += namelen;
4254 return matched;
4255 }
4257 static bool
4258 blame_read(struct view *view, char *line)
4259 {
4260 static struct blame_commit *commit = NULL;
4261 static int blamed = 0;
4262 static bool read_file = TRUE;
4264 if (read_file)
4265 return blame_read_file(view, line, &read_file);
4267 if (!line) {
4268 /* Reset all! */
4269 commit = NULL;
4270 blamed = 0;
4271 read_file = TRUE;
4272 string_format(view->ref, "%s", view->vid);
4273 if (view_is_displayed(view)) {
4274 update_view_title(view);
4275 redraw_view_from(view, 0);
4276 }
4277 return TRUE;
4278 }
4280 if (!commit) {
4281 commit = parse_blame_commit(view, line, &blamed);
4282 string_format(view->ref, "%s %2d%%", view->vid,
4283 view->lines ? blamed * 100 / view->lines : 0);
4285 } else if (match_blame_header("author ", &line)) {
4286 commit->author = get_author(line);
4288 } else if (match_blame_header("author-time ", &line)) {
4289 parse_timesec(&commit->time, line);
4291 } else if (match_blame_header("author-tz ", &line)) {
4292 parse_timezone(&commit->time, line);
4294 } else if (match_blame_header("summary ", &line)) {
4295 string_ncopy(commit->title, line, strlen(line));
4297 } else if (match_blame_header("previous ", &line)) {
4298 if (strlen(line) <= SIZEOF_REV)
4299 return FALSE;
4300 string_copy_rev(commit->parent_id, line);
4301 line += SIZEOF_REV;
4302 string_ncopy(commit->parent_filename, line, strlen(line));
4304 } else if (match_blame_header("filename ", &line)) {
4305 string_ncopy(commit->filename, line, strlen(line));
4306 commit = NULL;
4307 }
4309 return TRUE;
4310 }
4312 static bool
4313 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4314 {
4315 struct blame *blame = line->data;
4316 struct time *time = NULL;
4317 const char *id = NULL, *author = NULL;
4319 if (blame->commit && *blame->commit->filename) {
4320 id = blame->commit->id;
4321 author = blame->commit->author;
4322 time = &blame->commit->time;
4323 }
4325 if (opt_date && draw_date(view, time))
4326 return TRUE;
4328 if (opt_author && draw_author(view, author))
4329 return TRUE;
4331 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4332 return TRUE;
4334 if (draw_lineno(view, lineno))
4335 return TRUE;
4337 draw_text(view, LINE_DEFAULT, blame->text);
4338 return TRUE;
4339 }
4341 static bool
4342 check_blame_commit(struct blame *blame, bool check_null_id)
4343 {
4344 if (!blame->commit)
4345 report("Commit data not loaded yet");
4346 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4347 report("No commit exist for the selected line");
4348 else
4349 return TRUE;
4350 return FALSE;
4351 }
4353 static void
4354 setup_blame_parent_line(struct view *view, struct blame *blame)
4355 {
4356 char from[SIZEOF_REF + SIZEOF_STR];
4357 char to[SIZEOF_REF + SIZEOF_STR];
4358 const char *diff_tree_argv[] = {
4359 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4360 "-U0", from, to, "--", NULL
4361 };
4362 struct io io;
4363 int parent_lineno = -1;
4364 int blamed_lineno = -1;
4365 char *line;
4367 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4368 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4369 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4370 return;
4372 while ((line = io_get(&io, '\n', TRUE))) {
4373 if (*line == '@') {
4374 char *pos = strchr(line, '+');
4376 parent_lineno = atoi(line + 4);
4377 if (pos)
4378 blamed_lineno = atoi(pos + 1);
4380 } else if (*line == '+' && parent_lineno != -1) {
4381 if (blame->lineno == blamed_lineno - 1 &&
4382 !strcmp(blame->text, line + 1)) {
4383 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4384 break;
4385 }
4386 blamed_lineno++;
4387 }
4388 }
4390 io_done(&io);
4391 }
4393 static enum request
4394 blame_request(struct view *view, enum request request, struct line *line)
4395 {
4396 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4397 struct blame *blame = line->data;
4399 switch (request) {
4400 case REQ_VIEW_BLAME:
4401 if (check_blame_commit(blame, TRUE)) {
4402 string_copy(opt_ref, blame->commit->id);
4403 string_copy(opt_file, blame->commit->filename);
4404 if (blame->lineno)
4405 view->lineno = blame->lineno;
4406 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4407 }
4408 break;
4410 case REQ_PARENT:
4411 if (!check_blame_commit(blame, TRUE))
4412 break;
4413 if (!*blame->commit->parent_id) {
4414 report("The selected commit has no parents");
4415 } else {
4416 string_copy_rev(opt_ref, blame->commit->parent_id);
4417 string_copy(opt_file, blame->commit->parent_filename);
4418 setup_blame_parent_line(view, blame);
4419 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4420 }
4421 break;
4423 case REQ_ENTER:
4424 if (!check_blame_commit(blame, FALSE))
4425 break;
4427 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4428 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4429 break;
4431 if (!strcmp(blame->commit->id, NULL_ID)) {
4432 struct view *diff = VIEW(REQ_VIEW_DIFF);
4433 const char *diff_index_argv[] = {
4434 "git", "diff-index", "--root", "--patch-with-stat",
4435 "-C", "-M", "HEAD", "--", view->vid, NULL
4436 };
4438 if (!*blame->commit->parent_id) {
4439 diff_index_argv[1] = "diff";
4440 diff_index_argv[2] = "--no-color";
4441 diff_index_argv[6] = "--";
4442 diff_index_argv[7] = "/dev/null";
4443 }
4445 if (!prepare_update(diff, diff_index_argv, NULL)) {
4446 report("Failed to allocate diff command");
4447 break;
4448 }
4449 flags |= OPEN_PREPARED;
4450 }
4452 open_view(view, REQ_VIEW_DIFF, flags);
4453 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4454 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4455 break;
4457 default:
4458 return request;
4459 }
4461 return REQ_NONE;
4462 }
4464 static bool
4465 blame_grep(struct view *view, struct line *line)
4466 {
4467 struct blame *blame = line->data;
4468 struct blame_commit *commit = blame->commit;
4469 const char *text[] = {
4470 blame->text,
4471 commit ? commit->title : "",
4472 commit ? commit->id : "",
4473 commit && opt_author ? commit->author : "",
4474 commit ? mkdate(&commit->time, opt_date) : "",
4475 NULL
4476 };
4478 return grep_text(view, text);
4479 }
4481 static void
4482 blame_select(struct view *view, struct line *line)
4483 {
4484 struct blame *blame = line->data;
4485 struct blame_commit *commit = blame->commit;
4487 if (!commit)
4488 return;
4490 if (!strcmp(commit->id, NULL_ID))
4491 string_ncopy(ref_commit, "HEAD", 4);
4492 else
4493 string_copy_rev(ref_commit, commit->id);
4494 }
4496 static struct view_ops blame_ops = {
4497 "line",
4498 blame_open,
4499 blame_read,
4500 blame_draw,
4501 blame_request,
4502 blame_grep,
4503 blame_select,
4504 };
4506 /*
4507 * Branch backend
4508 */
4510 struct branch {
4511 const char *author; /* Author of the last commit. */
4512 struct time time; /* Date of the last activity. */
4513 const struct ref *ref; /* Name and commit ID information. */
4514 };
4516 static const struct ref branch_all;
4518 static const enum sort_field branch_sort_fields[] = {
4519 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4520 };
4521 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4523 static int
4524 branch_compare(const void *l1, const void *l2)
4525 {
4526 const struct branch *branch1 = ((const struct line *) l1)->data;
4527 const struct branch *branch2 = ((const struct line *) l2)->data;
4529 switch (get_sort_field(branch_sort_state)) {
4530 case ORDERBY_DATE:
4531 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4533 case ORDERBY_AUTHOR:
4534 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4536 case ORDERBY_NAME:
4537 default:
4538 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4539 }
4540 }
4542 static bool
4543 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4544 {
4545 struct branch *branch = line->data;
4546 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4548 if (opt_date && draw_date(view, &branch->time))
4549 return TRUE;
4551 if (opt_author && draw_author(view, branch->author))
4552 return TRUE;
4554 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4555 return TRUE;
4556 }
4558 static enum request
4559 branch_request(struct view *view, enum request request, struct line *line)
4560 {
4561 struct branch *branch = line->data;
4563 switch (request) {
4564 case REQ_REFRESH:
4565 load_refs();
4566 open_view(view, REQ_VIEW_BRANCH, OPEN_REFRESH);
4567 return REQ_NONE;
4569 case REQ_TOGGLE_SORT_FIELD:
4570 case REQ_TOGGLE_SORT_ORDER:
4571 sort_view(view, request, &branch_sort_state, branch_compare);
4572 return REQ_NONE;
4574 case REQ_ENTER:
4575 {
4576 const struct ref *ref = branch->ref;
4577 const char *all_branches_argv[] = {
4578 "git", "log", "--no-color", "--pretty=raw", "--parents",
4579 "--topo-order",
4580 ref == &branch_all ? "--all" : ref->name, NULL
4581 };
4582 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4584 if (!prepare_update(main_view, all_branches_argv, NULL))
4585 report("Failed to load view of all branches");
4586 else
4587 open_view(view, REQ_VIEW_MAIN, OPEN_PREPARED | OPEN_SPLIT);
4588 return REQ_NONE;
4589 }
4590 default:
4591 return request;
4592 }
4593 }
4595 static bool
4596 branch_read(struct view *view, char *line)
4597 {
4598 static char id[SIZEOF_REV];
4599 struct branch *reference;
4600 size_t i;
4602 if (!line)
4603 return TRUE;
4605 switch (get_line_type(line)) {
4606 case LINE_COMMIT:
4607 string_copy_rev(id, line + STRING_SIZE("commit "));
4608 return TRUE;
4610 case LINE_AUTHOR:
4611 for (i = 0, reference = NULL; i < view->lines; i++) {
4612 struct branch *branch = view->line[i].data;
4614 if (strcmp(branch->ref->id, id))
4615 continue;
4617 view->line[i].dirty = TRUE;
4618 if (reference) {
4619 branch->author = reference->author;
4620 branch->time = reference->time;
4621 continue;
4622 }
4624 parse_author_line(line + STRING_SIZE("author "),
4625 &branch->author, &branch->time);
4626 reference = branch;
4627 }
4628 return TRUE;
4630 default:
4631 return TRUE;
4632 }
4634 }
4636 static bool
4637 branch_open_visitor(void *data, const struct ref *ref)
4638 {
4639 struct view *view = data;
4640 struct branch *branch;
4642 if (ref->tag || ref->ltag || ref->remote)
4643 return TRUE;
4645 branch = calloc(1, sizeof(*branch));
4646 if (!branch)
4647 return FALSE;
4649 branch->ref = ref;
4650 return !!add_line_data(view, branch, LINE_DEFAULT);
4651 }
4653 static bool
4654 branch_open(struct view *view, enum open_flags flags)
4655 {
4656 const char *branch_log[] = {
4657 "git", "log", "--no-color", "--pretty=raw",
4658 "--simplify-by-decoration", "--all", NULL
4659 };
4661 if (!start_update(view, branch_log, NULL)) {
4662 report("Failed to load branch data");
4663 return TRUE;
4664 }
4666 setup_update(view, view->id);
4667 branch_open_visitor(view, &branch_all);
4668 foreach_ref(branch_open_visitor, view);
4669 view->p_restore = TRUE;
4671 return TRUE;
4672 }
4674 static bool
4675 branch_grep(struct view *view, struct line *line)
4676 {
4677 struct branch *branch = line->data;
4678 const char *text[] = {
4679 branch->ref->name,
4680 branch->author,
4681 NULL
4682 };
4684 return grep_text(view, text);
4685 }
4687 static void
4688 branch_select(struct view *view, struct line *line)
4689 {
4690 struct branch *branch = line->data;
4692 string_copy_rev(view->ref, branch->ref->id);
4693 string_copy_rev(ref_commit, branch->ref->id);
4694 string_copy_rev(ref_head, branch->ref->id);
4695 string_copy_rev(ref_branch, branch->ref->name);
4696 }
4698 static struct view_ops branch_ops = {
4699 "branch",
4700 branch_open,
4701 branch_read,
4702 branch_draw,
4703 branch_request,
4704 branch_grep,
4705 branch_select,
4706 };
4708 /*
4709 * Status backend
4710 */
4712 struct status {
4713 char status;
4714 struct {
4715 mode_t mode;
4716 char rev[SIZEOF_REV];
4717 char name[SIZEOF_STR];
4718 } old;
4719 struct {
4720 mode_t mode;
4721 char rev[SIZEOF_REV];
4722 char name[SIZEOF_STR];
4723 } new;
4724 };
4726 static char status_onbranch[SIZEOF_STR];
4727 static struct status stage_status;
4728 static enum line_type stage_line_type;
4729 static size_t stage_chunks;
4730 static int *stage_chunk;
4732 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4734 /* This should work even for the "On branch" line. */
4735 static inline bool
4736 status_has_none(struct view *view, struct line *line)
4737 {
4738 return line < view->line + view->lines && !line[1].data;
4739 }
4741 /* Get fields from the diff line:
4742 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4743 */
4744 static inline bool
4745 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4746 {
4747 const char *old_mode = buf + 1;
4748 const char *new_mode = buf + 8;
4749 const char *old_rev = buf + 15;
4750 const char *new_rev = buf + 56;
4751 const char *status = buf + 97;
4753 if (bufsize < 98 ||
4754 old_mode[-1] != ':' ||
4755 new_mode[-1] != ' ' ||
4756 old_rev[-1] != ' ' ||
4757 new_rev[-1] != ' ' ||
4758 status[-1] != ' ')
4759 return FALSE;
4761 file->status = *status;
4763 string_copy_rev(file->old.rev, old_rev);
4764 string_copy_rev(file->new.rev, new_rev);
4766 file->old.mode = strtoul(old_mode, NULL, 8);
4767 file->new.mode = strtoul(new_mode, NULL, 8);
4769 file->old.name[0] = file->new.name[0] = 0;
4771 return TRUE;
4772 }
4774 static bool
4775 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4776 {
4777 struct status *unmerged = NULL;
4778 char *buf;
4779 struct io io;
4781 if (!io_run(&io, IO_RD, opt_cdup, argv))
4782 return FALSE;
4784 add_line_data(view, NULL, type);
4786 while ((buf = io_get(&io, 0, TRUE))) {
4787 struct status *file = unmerged;
4789 if (!file) {
4790 file = calloc(1, sizeof(*file));
4791 if (!file || !add_line_data(view, file, type))
4792 goto error_out;
4793 }
4795 /* Parse diff info part. */
4796 if (status) {
4797 file->status = status;
4798 if (status == 'A')
4799 string_copy(file->old.rev, NULL_ID);
4801 } else if (!file->status || file == unmerged) {
4802 if (!status_get_diff(file, buf, strlen(buf)))
4803 goto error_out;
4805 buf = io_get(&io, 0, TRUE);
4806 if (!buf)
4807 break;
4809 /* Collapse all modified entries that follow an
4810 * associated unmerged entry. */
4811 if (unmerged == file) {
4812 unmerged->status = 'U';
4813 unmerged = NULL;
4814 } else if (file->status == 'U') {
4815 unmerged = file;
4816 }
4817 }
4819 /* Grab the old name for rename/copy. */
4820 if (!*file->old.name &&
4821 (file->status == 'R' || file->status == 'C')) {
4822 string_ncopy(file->old.name, buf, strlen(buf));
4824 buf = io_get(&io, 0, TRUE);
4825 if (!buf)
4826 break;
4827 }
4829 /* git-ls-files just delivers a NUL separated list of
4830 * file names similar to the second half of the
4831 * git-diff-* output. */
4832 string_ncopy(file->new.name, buf, strlen(buf));
4833 if (!*file->old.name)
4834 string_copy(file->old.name, file->new.name);
4835 file = NULL;
4836 }
4838 if (io_error(&io)) {
4839 error_out:
4840 io_done(&io);
4841 return FALSE;
4842 }
4844 if (!view->line[view->lines - 1].data)
4845 add_line_data(view, NULL, LINE_STAT_NONE);
4847 io_done(&io);
4848 return TRUE;
4849 }
4851 /* Don't show unmerged entries in the staged section. */
4852 static const char *status_diff_index_argv[] = {
4853 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4854 "--cached", "-M", "HEAD", NULL
4855 };
4857 static const char *status_diff_files_argv[] = {
4858 "git", "diff-files", "-z", NULL
4859 };
4861 static const char *status_list_other_argv[] = {
4862 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4863 };
4865 static const char *status_list_no_head_argv[] = {
4866 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4867 };
4869 static const char *update_index_argv[] = {
4870 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4871 };
4873 /* Restore the previous line number to stay in the context or select a
4874 * line with something that can be updated. */
4875 static void
4876 status_restore(struct view *view)
4877 {
4878 if (view->p_lineno >= view->lines)
4879 view->p_lineno = view->lines - 1;
4880 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4881 view->p_lineno++;
4882 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4883 view->p_lineno--;
4885 /* If the above fails, always skip the "On branch" line. */
4886 if (view->p_lineno < view->lines)
4887 view->lineno = view->p_lineno;
4888 else
4889 view->lineno = 1;
4891 if (view->lineno < view->offset)
4892 view->offset = view->lineno;
4893 else if (view->offset + view->height <= view->lineno)
4894 view->offset = view->lineno - view->height + 1;
4896 view->p_restore = FALSE;
4897 }
4899 static void
4900 status_update_onbranch(void)
4901 {
4902 static const char *paths[][2] = {
4903 { "rebase-apply/rebasing", "Rebasing" },
4904 { "rebase-apply/applying", "Applying mailbox" },
4905 { "rebase-apply/", "Rebasing mailbox" },
4906 { "rebase-merge/interactive", "Interactive rebase" },
4907 { "rebase-merge/", "Rebase merge" },
4908 { "MERGE_HEAD", "Merging" },
4909 { "BISECT_LOG", "Bisecting" },
4910 { "HEAD", "On branch" },
4911 };
4912 char buf[SIZEOF_STR];
4913 struct stat stat;
4914 int i;
4916 if (is_initial_commit()) {
4917 string_copy(status_onbranch, "Initial commit");
4918 return;
4919 }
4921 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4922 char *head = opt_head;
4924 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4925 lstat(buf, &stat) < 0)
4926 continue;
4928 if (!*opt_head) {
4929 struct io io;
4931 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4932 io_read_buf(&io, buf, sizeof(buf))) {
4933 head = buf;
4934 if (!prefixcmp(head, "refs/heads/"))
4935 head += STRING_SIZE("refs/heads/");
4936 }
4937 }
4939 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4940 string_copy(status_onbranch, opt_head);
4941 return;
4942 }
4944 string_copy(status_onbranch, "Not currently on any branch");
4945 }
4947 /* First parse staged info using git-diff-index(1), then parse unstaged
4948 * info using git-diff-files(1), and finally untracked files using
4949 * git-ls-files(1). */
4950 static bool
4951 status_open(struct view *view, enum open_flags flags)
4952 {
4953 reset_view(view);
4955 add_line_data(view, NULL, LINE_STAT_HEAD);
4956 status_update_onbranch();
4958 io_run_bg(update_index_argv);
4960 if (is_initial_commit()) {
4961 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4962 return FALSE;
4963 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4964 return FALSE;
4965 }
4967 if (!opt_untracked_dirs_content)
4968 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
4970 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4971 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4972 return FALSE;
4974 /* Restore the exact position or use the specialized restore
4975 * mode? */
4976 if (!view->p_restore)
4977 status_restore(view);
4978 return TRUE;
4979 }
4981 static bool
4982 status_draw(struct view *view, struct line *line, unsigned int lineno)
4983 {
4984 struct status *status = line->data;
4985 enum line_type type;
4986 const char *text;
4988 if (!status) {
4989 switch (line->type) {
4990 case LINE_STAT_STAGED:
4991 type = LINE_STAT_SECTION;
4992 text = "Changes to be committed:";
4993 break;
4995 case LINE_STAT_UNSTAGED:
4996 type = LINE_STAT_SECTION;
4997 text = "Changed but not updated:";
4998 break;
5000 case LINE_STAT_UNTRACKED:
5001 type = LINE_STAT_SECTION;
5002 text = "Untracked files:";
5003 break;
5005 case LINE_STAT_NONE:
5006 type = LINE_DEFAULT;
5007 text = " (no files)";
5008 break;
5010 case LINE_STAT_HEAD:
5011 type = LINE_STAT_HEAD;
5012 text = status_onbranch;
5013 break;
5015 default:
5016 return FALSE;
5017 }
5018 } else {
5019 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5021 buf[0] = status->status;
5022 if (draw_text(view, line->type, buf))
5023 return TRUE;
5024 type = LINE_DEFAULT;
5025 text = status->new.name;
5026 }
5028 draw_text(view, type, text);
5029 return TRUE;
5030 }
5032 static enum request
5033 status_load_error(struct view *view, struct view *stage, const char *path)
5034 {
5035 if (displayed_views() == 2 || display[current_view] != view)
5036 maximize_view(view);
5037 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
5038 return REQ_NONE;
5039 }
5041 static enum request
5042 status_enter(struct view *view, struct line *line)
5043 {
5044 struct status *status = line->data;
5045 const char *oldpath = status ? status->old.name : NULL;
5046 /* Diffs for unmerged entries are empty when passing the new
5047 * path, so leave it empty. */
5048 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5049 const char *info;
5050 enum open_flags split;
5051 struct view *stage = VIEW(REQ_VIEW_STAGE);
5053 if (line->type == LINE_STAT_NONE ||
5054 (!status && line[1].type == LINE_STAT_NONE)) {
5055 report("No file to diff");
5056 return REQ_NONE;
5057 }
5059 switch (line->type) {
5060 case LINE_STAT_STAGED:
5061 if (is_initial_commit()) {
5062 const char *no_head_diff_argv[] = {
5063 "git", "diff", "--no-color", "--patch-with-stat",
5064 "--", "/dev/null", newpath, NULL
5065 };
5067 if (!prepare_update(stage, no_head_diff_argv, opt_cdup))
5068 return status_load_error(view, stage, newpath);
5069 } else {
5070 const char *index_show_argv[] = {
5071 "git", "diff-index", "--root", "--patch-with-stat",
5072 "-C", "-M", "--cached", "HEAD", "--",
5073 oldpath, newpath, NULL
5074 };
5076 if (!prepare_update(stage, index_show_argv, opt_cdup))
5077 return status_load_error(view, stage, newpath);
5078 }
5080 if (status)
5081 info = "Staged changes to %s";
5082 else
5083 info = "Staged changes";
5084 break;
5086 case LINE_STAT_UNSTAGED:
5087 {
5088 const char *files_show_argv[] = {
5089 "git", "diff-files", "--root", "--patch-with-stat",
5090 "-C", "-M", "--", oldpath, newpath, NULL
5091 };
5093 if (!prepare_update(stage, files_show_argv, opt_cdup))
5094 return status_load_error(view, stage, newpath);
5095 if (status)
5096 info = "Unstaged changes to %s";
5097 else
5098 info = "Unstaged changes";
5099 break;
5100 }
5101 case LINE_STAT_UNTRACKED:
5102 if (!newpath) {
5103 report("No file to show");
5104 return REQ_NONE;
5105 }
5107 if (!suffixcmp(status->new.name, -1, "/")) {
5108 report("Cannot display a directory");
5109 return REQ_NONE;
5110 }
5112 if (!prepare_update_file(stage, newpath))
5113 return status_load_error(view, stage, newpath);
5114 info = "Untracked file %s";
5115 break;
5117 case LINE_STAT_HEAD:
5118 return REQ_NONE;
5120 default:
5121 die("line type %d not handled in switch", line->type);
5122 }
5124 split = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5125 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5126 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5127 if (status) {
5128 stage_status = *status;
5129 } else {
5130 memset(&stage_status, 0, sizeof(stage_status));
5131 }
5133 stage_line_type = line->type;
5134 stage_chunks = 0;
5135 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5136 }
5138 return REQ_NONE;
5139 }
5141 static bool
5142 status_exists(struct status *status, enum line_type type)
5143 {
5144 struct view *view = VIEW(REQ_VIEW_STATUS);
5145 unsigned long lineno;
5147 for (lineno = 0; lineno < view->lines; lineno++) {
5148 struct line *line = &view->line[lineno];
5149 struct status *pos = line->data;
5151 if (line->type != type)
5152 continue;
5153 if (!pos && (!status || !status->status) && line[1].data) {
5154 select_view_line(view, lineno);
5155 return TRUE;
5156 }
5157 if (pos && !strcmp(status->new.name, pos->new.name)) {
5158 select_view_line(view, lineno);
5159 return TRUE;
5160 }
5161 }
5163 return FALSE;
5164 }
5167 static bool
5168 status_update_prepare(struct io *io, enum line_type type)
5169 {
5170 const char *staged_argv[] = {
5171 "git", "update-index", "-z", "--index-info", NULL
5172 };
5173 const char *others_argv[] = {
5174 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5175 };
5177 switch (type) {
5178 case LINE_STAT_STAGED:
5179 return io_run(io, IO_WR, opt_cdup, staged_argv);
5181 case LINE_STAT_UNSTAGED:
5182 case LINE_STAT_UNTRACKED:
5183 return io_run(io, IO_WR, opt_cdup, others_argv);
5185 default:
5186 die("line type %d not handled in switch", type);
5187 return FALSE;
5188 }
5189 }
5191 static bool
5192 status_update_write(struct io *io, struct status *status, enum line_type type)
5193 {
5194 char buf[SIZEOF_STR];
5195 size_t bufsize = 0;
5197 switch (type) {
5198 case LINE_STAT_STAGED:
5199 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5200 status->old.mode,
5201 status->old.rev,
5202 status->old.name, 0))
5203 return FALSE;
5204 break;
5206 case LINE_STAT_UNSTAGED:
5207 case LINE_STAT_UNTRACKED:
5208 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5209 return FALSE;
5210 break;
5212 default:
5213 die("line type %d not handled in switch", type);
5214 }
5216 return io_write(io, buf, bufsize);
5217 }
5219 static bool
5220 status_update_file(struct status *status, enum line_type type)
5221 {
5222 struct io io;
5223 bool result;
5225 if (!status_update_prepare(&io, type))
5226 return FALSE;
5228 result = status_update_write(&io, status, type);
5229 return io_done(&io) && result;
5230 }
5232 static bool
5233 status_update_files(struct view *view, struct line *line)
5234 {
5235 char buf[sizeof(view->ref)];
5236 struct io io;
5237 bool result = TRUE;
5238 struct line *pos = view->line + view->lines;
5239 int files = 0;
5240 int file, done;
5241 int cursor_y = -1, cursor_x = -1;
5243 if (!status_update_prepare(&io, line->type))
5244 return FALSE;
5246 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5247 files++;
5249 string_copy(buf, view->ref);
5250 getsyx(cursor_y, cursor_x);
5251 for (file = 0, done = 5; result && file < files; line++, file++) {
5252 int almost_done = file * 100 / files;
5254 if (almost_done > done) {
5255 done = almost_done;
5256 string_format(view->ref, "updating file %u of %u (%d%% done)",
5257 file, files, done);
5258 update_view_title(view);
5259 setsyx(cursor_y, cursor_x);
5260 doupdate();
5261 }
5262 result = status_update_write(&io, line->data, line->type);
5263 }
5264 string_copy(view->ref, buf);
5266 return io_done(&io) && result;
5267 }
5269 static bool
5270 status_update(struct view *view)
5271 {
5272 struct line *line = &view->line[view->lineno];
5274 assert(view->lines);
5276 if (!line->data) {
5277 /* This should work even for the "On branch" line. */
5278 if (line < view->line + view->lines && !line[1].data) {
5279 report("Nothing to update");
5280 return FALSE;
5281 }
5283 if (!status_update_files(view, line + 1)) {
5284 report("Failed to update file status");
5285 return FALSE;
5286 }
5288 } else if (!status_update_file(line->data, line->type)) {
5289 report("Failed to update file status");
5290 return FALSE;
5291 }
5293 return TRUE;
5294 }
5296 static bool
5297 status_revert(struct status *status, enum line_type type, bool has_none)
5298 {
5299 if (!status || type != LINE_STAT_UNSTAGED) {
5300 if (type == LINE_STAT_STAGED) {
5301 report("Cannot revert changes to staged files");
5302 } else if (type == LINE_STAT_UNTRACKED) {
5303 report("Cannot revert changes to untracked files");
5304 } else if (has_none) {
5305 report("Nothing to revert");
5306 } else {
5307 report("Cannot revert changes to multiple files");
5308 }
5310 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5311 char mode[10] = "100644";
5312 const char *reset_argv[] = {
5313 "git", "update-index", "--cacheinfo", mode,
5314 status->old.rev, status->old.name, NULL
5315 };
5316 const char *checkout_argv[] = {
5317 "git", "checkout", "--", status->old.name, NULL
5318 };
5320 if (status->status == 'U') {
5321 string_format(mode, "%5o", status->old.mode);
5323 if (status->old.mode == 0 && status->new.mode == 0) {
5324 reset_argv[2] = "--force-remove";
5325 reset_argv[3] = status->old.name;
5326 reset_argv[4] = NULL;
5327 }
5329 if (!io_run_fg(reset_argv, opt_cdup))
5330 return FALSE;
5331 if (status->old.mode == 0 && status->new.mode == 0)
5332 return TRUE;
5333 }
5335 return io_run_fg(checkout_argv, opt_cdup);
5336 }
5338 return FALSE;
5339 }
5341 static enum request
5342 status_request(struct view *view, enum request request, struct line *line)
5343 {
5344 struct status *status = line->data;
5346 switch (request) {
5347 case REQ_STATUS_UPDATE:
5348 if (!status_update(view))
5349 return REQ_NONE;
5350 break;
5352 case REQ_STATUS_REVERT:
5353 if (!status_revert(status, line->type, status_has_none(view, line)))
5354 return REQ_NONE;
5355 break;
5357 case REQ_STATUS_MERGE:
5358 if (!status || status->status != 'U') {
5359 report("Merging only possible for files with unmerged status ('U').");
5360 return REQ_NONE;
5361 }
5362 open_mergetool(status->new.name);
5363 break;
5365 case REQ_EDIT:
5366 if (!status)
5367 return request;
5368 if (status->status == 'D') {
5369 report("File has been deleted.");
5370 return REQ_NONE;
5371 }
5373 open_editor(status->new.name);
5374 break;
5376 case REQ_VIEW_BLAME:
5377 if (status)
5378 opt_ref[0] = 0;
5379 return request;
5381 case REQ_ENTER:
5382 /* After returning the status view has been split to
5383 * show the stage view. No further reloading is
5384 * necessary. */
5385 return status_enter(view, line);
5387 case REQ_REFRESH:
5388 /* Simply reload the view. */
5389 break;
5391 default:
5392 return request;
5393 }
5395 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
5397 return REQ_NONE;
5398 }
5400 static void
5401 status_select(struct view *view, struct line *line)
5402 {
5403 struct status *status = line->data;
5404 char file[SIZEOF_STR] = "all files";
5405 const char *text;
5406 const char *key;
5408 if (status && !string_format(file, "'%s'", status->new.name))
5409 return;
5411 if (!status && line[1].type == LINE_STAT_NONE)
5412 line++;
5414 switch (line->type) {
5415 case LINE_STAT_STAGED:
5416 text = "Press %s to unstage %s for commit";
5417 break;
5419 case LINE_STAT_UNSTAGED:
5420 text = "Press %s to stage %s for commit";
5421 break;
5423 case LINE_STAT_UNTRACKED:
5424 text = "Press %s to stage %s for addition";
5425 break;
5427 case LINE_STAT_HEAD:
5428 case LINE_STAT_NONE:
5429 text = "Nothing to update";
5430 break;
5432 default:
5433 die("line type %d not handled in switch", line->type);
5434 }
5436 if (status && status->status == 'U') {
5437 text = "Press %s to resolve conflict in %s";
5438 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5440 } else {
5441 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5442 }
5444 string_format(view->ref, text, key, file);
5445 if (status)
5446 string_copy(opt_file, status->new.name);
5447 }
5449 static bool
5450 status_grep(struct view *view, struct line *line)
5451 {
5452 struct status *status = line->data;
5454 if (status) {
5455 const char buf[2] = { status->status, 0 };
5456 const char *text[] = { status->new.name, buf, NULL };
5458 return grep_text(view, text);
5459 }
5461 return FALSE;
5462 }
5464 static struct view_ops status_ops = {
5465 "file",
5466 status_open,
5467 NULL,
5468 status_draw,
5469 status_request,
5470 status_grep,
5471 status_select,
5472 };
5475 static bool
5476 stage_diff_write(struct io *io, struct line *line, struct line *end)
5477 {
5478 while (line < end) {
5479 if (!io_write(io, line->data, strlen(line->data)) ||
5480 !io_write(io, "\n", 1))
5481 return FALSE;
5482 line++;
5483 if (line->type == LINE_DIFF_CHUNK ||
5484 line->type == LINE_DIFF_HEADER)
5485 break;
5486 }
5488 return TRUE;
5489 }
5491 static struct line *
5492 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5493 {
5494 for (; view->line < line; line--)
5495 if (line->type == type)
5496 return line;
5498 return NULL;
5499 }
5501 static bool
5502 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5503 {
5504 const char *apply_argv[SIZEOF_ARG] = {
5505 "git", "apply", "--whitespace=nowarn", NULL
5506 };
5507 struct line *diff_hdr;
5508 struct io io;
5509 int argc = 3;
5511 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5512 if (!diff_hdr)
5513 return FALSE;
5515 if (!revert)
5516 apply_argv[argc++] = "--cached";
5517 if (revert || stage_line_type == LINE_STAT_STAGED)
5518 apply_argv[argc++] = "-R";
5519 apply_argv[argc++] = "-";
5520 apply_argv[argc++] = NULL;
5521 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5522 return FALSE;
5524 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5525 !stage_diff_write(&io, chunk, view->line + view->lines))
5526 chunk = NULL;
5528 io_done(&io);
5529 io_run_bg(update_index_argv);
5531 return chunk ? TRUE : FALSE;
5532 }
5534 static bool
5535 stage_update(struct view *view, struct line *line)
5536 {
5537 struct line *chunk = NULL;
5539 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5540 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5542 if (chunk) {
5543 if (!stage_apply_chunk(view, chunk, FALSE)) {
5544 report("Failed to apply chunk");
5545 return FALSE;
5546 }
5548 } else if (!stage_status.status) {
5549 view = VIEW(REQ_VIEW_STATUS);
5551 for (line = view->line; line < view->line + view->lines; line++)
5552 if (line->type == stage_line_type)
5553 break;
5555 if (!status_update_files(view, line + 1)) {
5556 report("Failed to update files");
5557 return FALSE;
5558 }
5560 } else if (!status_update_file(&stage_status, stage_line_type)) {
5561 report("Failed to update file");
5562 return FALSE;
5563 }
5565 return TRUE;
5566 }
5568 static bool
5569 stage_revert(struct view *view, struct line *line)
5570 {
5571 struct line *chunk = NULL;
5573 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5574 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5576 if (chunk) {
5577 if (!prompt_yesno("Are you sure you want to revert changes?"))
5578 return FALSE;
5580 if (!stage_apply_chunk(view, chunk, TRUE)) {
5581 report("Failed to revert chunk");
5582 return FALSE;
5583 }
5584 return TRUE;
5586 } else {
5587 return status_revert(stage_status.status ? &stage_status : NULL,
5588 stage_line_type, FALSE);
5589 }
5590 }
5593 static void
5594 stage_next(struct view *view, struct line *line)
5595 {
5596 int i;
5598 if (!stage_chunks) {
5599 for (line = view->line; line < view->line + view->lines; line++) {
5600 if (line->type != LINE_DIFF_CHUNK)
5601 continue;
5603 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5604 report("Allocation failure");
5605 return;
5606 }
5608 stage_chunk[stage_chunks++] = line - view->line;
5609 }
5610 }
5612 for (i = 0; i < stage_chunks; i++) {
5613 if (stage_chunk[i] > view->lineno) {
5614 do_scroll_view(view, stage_chunk[i] - view->lineno);
5615 report("Chunk %d of %d", i + 1, stage_chunks);
5616 return;
5617 }
5618 }
5620 report("No next chunk found");
5621 }
5623 static enum request
5624 stage_request(struct view *view, enum request request, struct line *line)
5625 {
5626 switch (request) {
5627 case REQ_STATUS_UPDATE:
5628 if (!stage_update(view, line))
5629 return REQ_NONE;
5630 break;
5632 case REQ_STATUS_REVERT:
5633 if (!stage_revert(view, line))
5634 return REQ_NONE;
5635 break;
5637 case REQ_STAGE_NEXT:
5638 if (stage_line_type == LINE_STAT_UNTRACKED) {
5639 report("File is untracked; press %s to add",
5640 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5641 return REQ_NONE;
5642 }
5643 stage_next(view, line);
5644 return REQ_NONE;
5646 case REQ_EDIT:
5647 if (!stage_status.new.name[0])
5648 return request;
5649 if (stage_status.status == 'D') {
5650 report("File has been deleted.");
5651 return REQ_NONE;
5652 }
5654 open_editor(stage_status.new.name);
5655 break;
5657 case REQ_REFRESH:
5658 /* Reload everything ... */
5659 break;
5661 case REQ_VIEW_BLAME:
5662 if (stage_status.new.name[0]) {
5663 string_copy(opt_file, stage_status.new.name);
5664 opt_ref[0] = 0;
5665 }
5666 return request;
5668 case REQ_ENTER:
5669 return pager_request(view, request, line);
5671 default:
5672 return request;
5673 }
5675 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5676 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
5678 /* Check whether the staged entry still exists, and close the
5679 * stage view if it doesn't. */
5680 if (!status_exists(&stage_status, stage_line_type)) {
5681 status_restore(VIEW(REQ_VIEW_STATUS));
5682 return REQ_VIEW_CLOSE;
5683 }
5685 if (stage_line_type == LINE_STAT_UNTRACKED) {
5686 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5687 report("Cannot display a directory");
5688 return REQ_NONE;
5689 }
5691 if (!prepare_update_file(view, stage_status.new.name)) {
5692 report("Failed to open file: %s", strerror(errno));
5693 return REQ_NONE;
5694 }
5695 }
5696 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5698 return REQ_NONE;
5699 }
5701 static struct view_ops stage_ops = {
5702 "line",
5703 view_open,
5704 pager_read,
5705 pager_draw,
5706 stage_request,
5707 pager_grep,
5708 pager_select,
5709 };
5712 /*
5713 * Revision graph
5714 */
5716 static const enum line_type graph_colors[] = {
5717 LINE_GRAPH_LINE_0,
5718 LINE_GRAPH_LINE_1,
5719 LINE_GRAPH_LINE_2,
5720 LINE_GRAPH_LINE_3,
5721 LINE_GRAPH_LINE_4,
5722 LINE_GRAPH_LINE_5,
5723 LINE_GRAPH_LINE_6,
5724 };
5726 static enum line_type get_graph_color(struct graph_symbol *symbol)
5727 {
5728 if (symbol->commit)
5729 return LINE_GRAPH_COMMIT;
5730 assert(symbol->color < ARRAY_SIZE(graph_colors));
5731 return graph_colors[symbol->color];
5732 }
5734 static bool
5735 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5736 {
5737 const char *chars = graph_symbol_to_utf8(symbol);
5739 return draw_text(view, color, chars + !!first);
5740 }
5742 static bool
5743 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5744 {
5745 const char *chars = graph_symbol_to_ascii(symbol);
5747 return draw_text(view, color, chars + !!first);
5748 }
5750 static bool
5751 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5752 {
5753 const chtype *chars = graph_symbol_to_chtype(symbol);
5755 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5756 }
5758 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5760 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5761 {
5762 static const draw_graph_fn fns[] = {
5763 draw_graph_ascii,
5764 draw_graph_chtype,
5765 draw_graph_utf8
5766 };
5767 draw_graph_fn fn = fns[opt_line_graphics];
5768 int i;
5770 for (i = 0; i < canvas->size; i++) {
5771 struct graph_symbol *symbol = &canvas->symbols[i];
5772 enum line_type color = get_graph_color(symbol);
5774 if (fn(view, symbol, color, i == 0))
5775 return TRUE;
5776 }
5778 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5779 }
5781 /*
5782 * Main view backend
5783 */
5785 struct commit {
5786 char id[SIZEOF_REV]; /* SHA1 ID. */
5787 char title[128]; /* First line of the commit message. */
5788 const char *author; /* Author of the commit. */
5789 struct time time; /* Date from the author ident. */
5790 struct ref_list *refs; /* Repository references. */
5791 struct graph_canvas graph; /* Ancestry chain graphics. */
5792 };
5794 static bool
5795 main_open(struct view *view, enum open_flags flags)
5796 {
5797 static const char *main_argv[] = {
5798 "git", "log", "--no-color", "--pretty=raw", "--parents",
5799 "--topo-order", "%(diffargs)", "%(revargs)",
5800 "--", "%(fileargs)", NULL
5801 };
5803 return begin_update(view, NULL, main_argv, flags);
5804 }
5806 static bool
5807 main_draw(struct view *view, struct line *line, unsigned int lineno)
5808 {
5809 struct commit *commit = line->data;
5811 if (!commit->author)
5812 return FALSE;
5814 if (opt_date && draw_date(view, &commit->time))
5815 return TRUE;
5817 if (opt_author && draw_author(view, commit->author))
5818 return TRUE;
5820 if (opt_rev_graph && draw_graph(view, &commit->graph))
5821 return TRUE;
5823 if (opt_show_refs && commit->refs) {
5824 size_t i;
5826 for (i = 0; i < commit->refs->size; i++) {
5827 struct ref *ref = commit->refs->refs[i];
5828 enum line_type type;
5830 if (ref->head)
5831 type = LINE_MAIN_HEAD;
5832 else if (ref->ltag)
5833 type = LINE_MAIN_LOCAL_TAG;
5834 else if (ref->tag)
5835 type = LINE_MAIN_TAG;
5836 else if (ref->tracked)
5837 type = LINE_MAIN_TRACKED;
5838 else if (ref->remote)
5839 type = LINE_MAIN_REMOTE;
5840 else
5841 type = LINE_MAIN_REF;
5843 if (draw_text(view, type, "[") ||
5844 draw_text(view, type, ref->name) ||
5845 draw_text(view, type, "]"))
5846 return TRUE;
5848 if (draw_text(view, LINE_DEFAULT, " "))
5849 return TRUE;
5850 }
5851 }
5853 draw_text(view, LINE_DEFAULT, commit->title);
5854 return TRUE;
5855 }
5857 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5858 static bool
5859 main_read(struct view *view, char *line)
5860 {
5861 static struct graph graph;
5862 enum line_type type;
5863 struct commit *commit;
5865 if (!line) {
5866 if (!view->lines && !view->prev)
5867 die("No revisions match the given arguments.");
5868 if (view->lines > 0) {
5869 commit = view->line[view->lines - 1].data;
5870 view->line[view->lines - 1].dirty = 1;
5871 if (!commit->author) {
5872 view->lines--;
5873 free(commit);
5874 }
5875 }
5877 done_graph(&graph);
5878 return TRUE;
5879 }
5881 type = get_line_type(line);
5882 if (type == LINE_COMMIT) {
5883 bool is_boundary;
5885 commit = calloc(1, sizeof(struct commit));
5886 if (!commit)
5887 return FALSE;
5889 line += STRING_SIZE("commit ");
5890 is_boundary = *line == '-';
5891 if (is_boundary)
5892 line++;
5894 string_copy_rev(commit->id, line);
5895 commit->refs = get_ref_list(commit->id);
5896 add_line_data(view, commit, LINE_MAIN_COMMIT);
5897 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5898 return TRUE;
5899 }
5901 if (!view->lines)
5902 return TRUE;
5903 commit = view->line[view->lines - 1].data;
5905 switch (type) {
5906 case LINE_PARENT:
5907 if (!graph.has_parents)
5908 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5909 break;
5911 case LINE_AUTHOR:
5912 parse_author_line(line + STRING_SIZE("author "),
5913 &commit->author, &commit->time);
5914 graph_render_parents(&graph);
5915 break;
5917 default:
5918 /* Fill in the commit title if it has not already been set. */
5919 if (commit->title[0])
5920 break;
5922 /* Require titles to start with a non-space character at the
5923 * offset used by git log. */
5924 if (strncmp(line, " ", 4))
5925 break;
5926 line += 4;
5927 /* Well, if the title starts with a whitespace character,
5928 * try to be forgiving. Otherwise we end up with no title. */
5929 while (isspace(*line))
5930 line++;
5931 if (*line == '\0')
5932 break;
5933 /* FIXME: More graceful handling of titles; append "..." to
5934 * shortened titles, etc. */
5936 string_expand(commit->title, sizeof(commit->title), line, 1);
5937 view->line[view->lines - 1].dirty = 1;
5938 }
5940 return TRUE;
5941 }
5943 static enum request
5944 main_request(struct view *view, enum request request, struct line *line)
5945 {
5946 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5948 switch (request) {
5949 case REQ_ENTER:
5950 if (view_is_displayed(view) && display[0] != view)
5951 maximize_view(view);
5952 open_view(view, REQ_VIEW_DIFF, flags);
5953 break;
5954 case REQ_REFRESH:
5955 load_refs();
5956 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5957 break;
5958 default:
5959 return request;
5960 }
5962 return REQ_NONE;
5963 }
5965 static bool
5966 grep_refs(struct ref_list *list, regex_t *regex)
5967 {
5968 regmatch_t pmatch;
5969 size_t i;
5971 if (!opt_show_refs || !list)
5972 return FALSE;
5974 for (i = 0; i < list->size; i++) {
5975 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5976 return TRUE;
5977 }
5979 return FALSE;
5980 }
5982 static bool
5983 main_grep(struct view *view, struct line *line)
5984 {
5985 struct commit *commit = line->data;
5986 const char *text[] = {
5987 commit->title,
5988 opt_author ? commit->author : "",
5989 mkdate(&commit->time, opt_date),
5990 NULL
5991 };
5993 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5994 }
5996 static void
5997 main_select(struct view *view, struct line *line)
5998 {
5999 struct commit *commit = line->data;
6001 string_copy_rev(view->ref, commit->id);
6002 string_copy_rev(ref_commit, view->ref);
6003 }
6005 static struct view_ops main_ops = {
6006 "commit",
6007 main_open,
6008 main_read,
6009 main_draw,
6010 main_request,
6011 main_grep,
6012 main_select,
6013 };
6016 /*
6017 * Status management
6018 */
6020 /* Whether or not the curses interface has been initialized. */
6021 static bool cursed = FALSE;
6023 /* Terminal hacks and workarounds. */
6024 static bool use_scroll_redrawwin;
6025 static bool use_scroll_status_wclear;
6027 /* The status window is used for polling keystrokes. */
6028 static WINDOW *status_win;
6030 /* Reading from the prompt? */
6031 static bool input_mode = FALSE;
6033 static bool status_empty = FALSE;
6035 /* Update status and title window. */
6036 static void
6037 report(const char *msg, ...)
6038 {
6039 struct view *view = display[current_view];
6041 if (input_mode)
6042 return;
6044 if (!view) {
6045 char buf[SIZEOF_STR];
6046 va_list args;
6048 va_start(args, msg);
6049 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6050 buf[sizeof(buf) - 1] = 0;
6051 buf[sizeof(buf) - 2] = '.';
6052 buf[sizeof(buf) - 3] = '.';
6053 buf[sizeof(buf) - 4] = '.';
6054 }
6055 va_end(args);
6056 die("%s", buf);
6057 }
6059 if (!status_empty || *msg) {
6060 va_list args;
6062 va_start(args, msg);
6064 wmove(status_win, 0, 0);
6065 if (view->has_scrolled && use_scroll_status_wclear)
6066 wclear(status_win);
6067 if (*msg) {
6068 vwprintw(status_win, msg, args);
6069 status_empty = FALSE;
6070 } else {
6071 status_empty = TRUE;
6072 }
6073 wclrtoeol(status_win);
6074 wnoutrefresh(status_win);
6076 va_end(args);
6077 }
6079 update_view_title(view);
6080 }
6082 static void
6083 init_display(void)
6084 {
6085 const char *term;
6086 int x, y;
6088 /* Initialize the curses library */
6089 if (isatty(STDIN_FILENO)) {
6090 cursed = !!initscr();
6091 opt_tty = stdin;
6092 } else {
6093 /* Leave stdin and stdout alone when acting as a pager. */
6094 opt_tty = fopen("/dev/tty", "r+");
6095 if (!opt_tty)
6096 die("Failed to open /dev/tty");
6097 cursed = !!newterm(NULL, opt_tty, opt_tty);
6098 }
6100 if (!cursed)
6101 die("Failed to initialize curses");
6103 nonl(); /* Disable conversion and detect newlines from input. */
6104 cbreak(); /* Take input chars one at a time, no wait for \n */
6105 noecho(); /* Don't echo input */
6106 leaveok(stdscr, FALSE);
6108 if (has_colors())
6109 init_colors();
6111 getmaxyx(stdscr, y, x);
6112 status_win = newwin(1, x, y - 1, 0);
6113 if (!status_win)
6114 die("Failed to create status window");
6116 /* Enable keyboard mapping */
6117 keypad(status_win, TRUE);
6118 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6120 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6121 set_tabsize(opt_tab_size);
6122 #else
6123 TABSIZE = opt_tab_size;
6124 #endif
6126 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6127 if (term && !strcmp(term, "gnome-terminal")) {
6128 /* In the gnome-terminal-emulator, the message from
6129 * scrolling up one line when impossible followed by
6130 * scrolling down one line causes corruption of the
6131 * status line. This is fixed by calling wclear. */
6132 use_scroll_status_wclear = TRUE;
6133 use_scroll_redrawwin = FALSE;
6135 } else if (term && !strcmp(term, "xrvt-xpm")) {
6136 /* No problems with full optimizations in xrvt-(unicode)
6137 * and aterm. */
6138 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6140 } else {
6141 /* When scrolling in (u)xterm the last line in the
6142 * scrolling direction will update slowly. */
6143 use_scroll_redrawwin = TRUE;
6144 use_scroll_status_wclear = FALSE;
6145 }
6146 }
6148 static int
6149 get_input(int prompt_position)
6150 {
6151 struct view *view;
6152 int i, key, cursor_y, cursor_x;
6154 if (prompt_position)
6155 input_mode = TRUE;
6157 while (TRUE) {
6158 bool loading = FALSE;
6160 foreach_view (view, i) {
6161 update_view(view);
6162 if (view_is_displayed(view) && view->has_scrolled &&
6163 use_scroll_redrawwin)
6164 redrawwin(view->win);
6165 view->has_scrolled = FALSE;
6166 if (view->pipe)
6167 loading = TRUE;
6168 }
6170 /* Update the cursor position. */
6171 if (prompt_position) {
6172 getbegyx(status_win, cursor_y, cursor_x);
6173 cursor_x = prompt_position;
6174 } else {
6175 view = display[current_view];
6176 getbegyx(view->win, cursor_y, cursor_x);
6177 cursor_x = view->width - 1;
6178 cursor_y += view->lineno - view->offset;
6179 }
6180 setsyx(cursor_y, cursor_x);
6182 /* Refresh, accept single keystroke of input */
6183 doupdate();
6184 nodelay(status_win, loading);
6185 key = wgetch(status_win);
6187 /* wgetch() with nodelay() enabled returns ERR when
6188 * there's no input. */
6189 if (key == ERR) {
6191 } else if (key == KEY_RESIZE) {
6192 int height, width;
6194 getmaxyx(stdscr, height, width);
6196 wresize(status_win, 1, width);
6197 mvwin(status_win, height - 1, 0);
6198 wnoutrefresh(status_win);
6199 resize_display();
6200 redraw_display(TRUE);
6202 } else {
6203 input_mode = FALSE;
6204 return key;
6205 }
6206 }
6207 }
6209 static char *
6210 prompt_input(const char *prompt, input_handler handler, void *data)
6211 {
6212 enum input_status status = INPUT_OK;
6213 static char buf[SIZEOF_STR];
6214 size_t pos = 0;
6216 buf[pos] = 0;
6218 while (status == INPUT_OK || status == INPUT_SKIP) {
6219 int key;
6221 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6222 wclrtoeol(status_win);
6224 key = get_input(pos + 1);
6225 switch (key) {
6226 case KEY_RETURN:
6227 case KEY_ENTER:
6228 case '\n':
6229 status = pos ? INPUT_STOP : INPUT_CANCEL;
6230 break;
6232 case KEY_BACKSPACE:
6233 if (pos > 0)
6234 buf[--pos] = 0;
6235 else
6236 status = INPUT_CANCEL;
6237 break;
6239 case KEY_ESC:
6240 status = INPUT_CANCEL;
6241 break;
6243 default:
6244 if (pos >= sizeof(buf)) {
6245 report("Input string too long");
6246 return NULL;
6247 }
6249 status = handler(data, buf, key);
6250 if (status == INPUT_OK)
6251 buf[pos++] = (char) key;
6252 }
6253 }
6255 /* Clear the status window */
6256 status_empty = FALSE;
6257 report("");
6259 if (status == INPUT_CANCEL)
6260 return NULL;
6262 buf[pos++] = 0;
6264 return buf;
6265 }
6267 static enum input_status
6268 prompt_yesno_handler(void *data, char *buf, int c)
6269 {
6270 if (c == 'y' || c == 'Y')
6271 return INPUT_STOP;
6272 if (c == 'n' || c == 'N')
6273 return INPUT_CANCEL;
6274 return INPUT_SKIP;
6275 }
6277 static bool
6278 prompt_yesno(const char *prompt)
6279 {
6280 char prompt2[SIZEOF_STR];
6282 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6283 return FALSE;
6285 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6286 }
6288 static enum input_status
6289 read_prompt_handler(void *data, char *buf, int c)
6290 {
6291 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6292 }
6294 static char *
6295 read_prompt(const char *prompt)
6296 {
6297 return prompt_input(prompt, read_prompt_handler, NULL);
6298 }
6300 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6301 {
6302 enum input_status status = INPUT_OK;
6303 int size = 0;
6305 while (items[size].text)
6306 size++;
6308 while (status == INPUT_OK) {
6309 const struct menu_item *item = &items[*selected];
6310 int key;
6311 int i;
6313 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6314 prompt, *selected + 1, size);
6315 if (item->hotkey)
6316 wprintw(status_win, "[%c] ", (char) item->hotkey);
6317 wprintw(status_win, "%s", item->text);
6318 wclrtoeol(status_win);
6320 key = get_input(COLS - 1);
6321 switch (key) {
6322 case KEY_RETURN:
6323 case KEY_ENTER:
6324 case '\n':
6325 status = INPUT_STOP;
6326 break;
6328 case KEY_LEFT:
6329 case KEY_UP:
6330 *selected = *selected - 1;
6331 if (*selected < 0)
6332 *selected = size - 1;
6333 break;
6335 case KEY_RIGHT:
6336 case KEY_DOWN:
6337 *selected = (*selected + 1) % size;
6338 break;
6340 case KEY_ESC:
6341 status = INPUT_CANCEL;
6342 break;
6344 default:
6345 for (i = 0; items[i].text; i++)
6346 if (items[i].hotkey == key) {
6347 *selected = i;
6348 status = INPUT_STOP;
6349 break;
6350 }
6351 }
6352 }
6354 /* Clear the status window */
6355 status_empty = FALSE;
6356 report("");
6358 return status != INPUT_CANCEL;
6359 }
6361 /*
6362 * Repository properties
6363 */
6365 static struct ref **refs = NULL;
6366 static size_t refs_size = 0;
6367 static struct ref *refs_head = NULL;
6369 static struct ref_list **ref_lists = NULL;
6370 static size_t ref_lists_size = 0;
6372 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6373 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6374 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6376 static int
6377 compare_refs(const void *ref1_, const void *ref2_)
6378 {
6379 const struct ref *ref1 = *(const struct ref **)ref1_;
6380 const struct ref *ref2 = *(const struct ref **)ref2_;
6382 if (ref1->tag != ref2->tag)
6383 return ref2->tag - ref1->tag;
6384 if (ref1->ltag != ref2->ltag)
6385 return ref2->ltag - ref2->ltag;
6386 if (ref1->head != ref2->head)
6387 return ref2->head - ref1->head;
6388 if (ref1->tracked != ref2->tracked)
6389 return ref2->tracked - ref1->tracked;
6390 if (ref1->remote != ref2->remote)
6391 return ref2->remote - ref1->remote;
6392 return strcmp(ref1->name, ref2->name);
6393 }
6395 static void
6396 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6397 {
6398 size_t i;
6400 for (i = 0; i < refs_size; i++)
6401 if (!visitor(data, refs[i]))
6402 break;
6403 }
6405 static struct ref *
6406 get_ref_head()
6407 {
6408 return refs_head;
6409 }
6411 static struct ref_list *
6412 get_ref_list(const char *id)
6413 {
6414 struct ref_list *list;
6415 size_t i;
6417 for (i = 0; i < ref_lists_size; i++)
6418 if (!strcmp(id, ref_lists[i]->id))
6419 return ref_lists[i];
6421 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6422 return NULL;
6423 list = calloc(1, sizeof(*list));
6424 if (!list)
6425 return NULL;
6427 for (i = 0; i < refs_size; i++) {
6428 if (!strcmp(id, refs[i]->id) &&
6429 realloc_refs_list(&list->refs, list->size, 1))
6430 list->refs[list->size++] = refs[i];
6431 }
6433 if (!list->refs) {
6434 free(list);
6435 return NULL;
6436 }
6438 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6439 ref_lists[ref_lists_size++] = list;
6440 return list;
6441 }
6443 static int
6444 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6445 {
6446 struct ref *ref = NULL;
6447 bool tag = FALSE;
6448 bool ltag = FALSE;
6449 bool remote = FALSE;
6450 bool tracked = FALSE;
6451 bool head = FALSE;
6452 int from = 0, to = refs_size - 1;
6454 if (!prefixcmp(name, "refs/tags/")) {
6455 if (!suffixcmp(name, namelen, "^{}")) {
6456 namelen -= 3;
6457 name[namelen] = 0;
6458 } else {
6459 ltag = TRUE;
6460 }
6462 tag = TRUE;
6463 namelen -= STRING_SIZE("refs/tags/");
6464 name += STRING_SIZE("refs/tags/");
6466 } else if (!prefixcmp(name, "refs/remotes/")) {
6467 remote = TRUE;
6468 namelen -= STRING_SIZE("refs/remotes/");
6469 name += STRING_SIZE("refs/remotes/");
6470 tracked = !strcmp(opt_remote, name);
6472 } else if (!prefixcmp(name, "refs/heads/")) {
6473 namelen -= STRING_SIZE("refs/heads/");
6474 name += STRING_SIZE("refs/heads/");
6475 if (!strncmp(opt_head, name, namelen))
6476 return OK;
6478 } else if (!strcmp(name, "HEAD")) {
6479 head = TRUE;
6480 if (*opt_head) {
6481 namelen = strlen(opt_head);
6482 name = opt_head;
6483 }
6484 }
6486 /* If we are reloading or it's an annotated tag, replace the
6487 * previous SHA1 with the resolved commit id; relies on the fact
6488 * git-ls-remote lists the commit id of an annotated tag right
6489 * before the commit id it points to. */
6490 while (from <= to) {
6491 size_t pos = (to + from) / 2;
6492 int cmp = strcmp(name, refs[pos]->name);
6494 if (!cmp) {
6495 ref = refs[pos];
6496 break;
6497 }
6499 if (cmp < 0)
6500 to = pos - 1;
6501 else
6502 from = pos + 1;
6503 }
6505 if (!ref) {
6506 if (!realloc_refs(&refs, refs_size, 1))
6507 return ERR;
6508 ref = calloc(1, sizeof(*ref) + namelen);
6509 if (!ref)
6510 return ERR;
6511 memmove(refs + from + 1, refs + from,
6512 (refs_size - from) * sizeof(*refs));
6513 refs[from] = ref;
6514 strncpy(ref->name, name, namelen);
6515 refs_size++;
6516 }
6518 ref->head = head;
6519 ref->tag = tag;
6520 ref->ltag = ltag;
6521 ref->remote = remote;
6522 ref->tracked = tracked;
6523 string_copy_rev(ref->id, id);
6525 if (head)
6526 refs_head = ref;
6527 return OK;
6528 }
6530 static int
6531 load_refs(void)
6532 {
6533 const char *head_argv[] = {
6534 "git", "symbolic-ref", "HEAD", NULL
6535 };
6536 static const char *ls_remote_argv[SIZEOF_ARG] = {
6537 "git", "ls-remote", opt_git_dir, NULL
6538 };
6539 static bool init = FALSE;
6540 size_t i;
6542 if (!init) {
6543 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6544 die("TIG_LS_REMOTE contains too many arguments");
6545 init = TRUE;
6546 }
6548 if (!*opt_git_dir)
6549 return OK;
6551 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6552 !prefixcmp(opt_head, "refs/heads/")) {
6553 char *offset = opt_head + STRING_SIZE("refs/heads/");
6555 memmove(opt_head, offset, strlen(offset) + 1);
6556 }
6558 refs_head = NULL;
6559 for (i = 0; i < refs_size; i++)
6560 refs[i]->id[0] = 0;
6562 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6563 return ERR;
6565 /* Update the ref lists to reflect changes. */
6566 for (i = 0; i < ref_lists_size; i++) {
6567 struct ref_list *list = ref_lists[i];
6568 size_t old, new;
6570 for (old = new = 0; old < list->size; old++)
6571 if (!strcmp(list->id, list->refs[old]->id))
6572 list->refs[new++] = list->refs[old];
6573 list->size = new;
6574 }
6576 return OK;
6577 }
6579 static void
6580 set_remote_branch(const char *name, const char *value, size_t valuelen)
6581 {
6582 if (!strcmp(name, ".remote")) {
6583 string_ncopy(opt_remote, value, valuelen);
6585 } else if (*opt_remote && !strcmp(name, ".merge")) {
6586 size_t from = strlen(opt_remote);
6588 if (!prefixcmp(value, "refs/heads/"))
6589 value += STRING_SIZE("refs/heads/");
6591 if (!string_format_from(opt_remote, &from, "/%s", value))
6592 opt_remote[0] = 0;
6593 }
6594 }
6596 static void
6597 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6598 {
6599 const char *argv[SIZEOF_ARG] = { name, "=" };
6600 int argc = 1 + (cmd == option_set_command);
6601 enum option_code error;
6603 if (!argv_from_string(argv, &argc, value))
6604 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6605 else
6606 error = cmd(argc, argv);
6608 if (error != OPT_OK)
6609 warn("Option 'tig.%s': %s", name, option_errors[error]);
6610 }
6612 static bool
6613 set_environment_variable(const char *name, const char *value)
6614 {
6615 size_t len = strlen(name) + 1 + strlen(value) + 1;
6616 char *env = malloc(len);
6618 if (env &&
6619 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6620 putenv(env) == 0)
6621 return TRUE;
6622 free(env);
6623 return FALSE;
6624 }
6626 static void
6627 set_work_tree(const char *value)
6628 {
6629 char cwd[SIZEOF_STR];
6631 if (!getcwd(cwd, sizeof(cwd)))
6632 die("Failed to get cwd path: %s", strerror(errno));
6633 if (chdir(opt_git_dir) < 0)
6634 die("Failed to chdir(%s): %s", strerror(errno));
6635 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6636 die("Failed to get git path: %s", strerror(errno));
6637 if (chdir(cwd) < 0)
6638 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6639 if (chdir(value) < 0)
6640 die("Failed to chdir(%s): %s", value, strerror(errno));
6641 if (!getcwd(cwd, sizeof(cwd)))
6642 die("Failed to get cwd path: %s", strerror(errno));
6643 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6644 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6645 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6646 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6647 opt_is_inside_work_tree = TRUE;
6648 }
6650 static int
6651 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6652 {
6653 if (!strcmp(name, "i18n.commitencoding"))
6654 string_ncopy(opt_encoding, value, valuelen);
6656 else if (!strcmp(name, "core.editor"))
6657 string_ncopy(opt_editor, value, valuelen);
6659 else if (!strcmp(name, "core.worktree"))
6660 set_work_tree(value);
6662 else if (!prefixcmp(name, "tig.color."))
6663 set_repo_config_option(name + 10, value, option_color_command);
6665 else if (!prefixcmp(name, "tig.bind."))
6666 set_repo_config_option(name + 9, value, option_bind_command);
6668 else if (!prefixcmp(name, "tig."))
6669 set_repo_config_option(name + 4, value, option_set_command);
6671 else if (*opt_head && !prefixcmp(name, "branch.") &&
6672 !strncmp(name + 7, opt_head, strlen(opt_head)))
6673 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6675 return OK;
6676 }
6678 static int
6679 load_git_config(void)
6680 {
6681 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6683 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6684 }
6686 static int
6687 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6688 {
6689 if (!opt_git_dir[0]) {
6690 string_ncopy(opt_git_dir, name, namelen);
6692 } else if (opt_is_inside_work_tree == -1) {
6693 /* This can be 3 different values depending on the
6694 * version of git being used. If git-rev-parse does not
6695 * understand --is-inside-work-tree it will simply echo
6696 * the option else either "true" or "false" is printed.
6697 * Default to true for the unknown case. */
6698 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6700 } else if (*name == '.') {
6701 string_ncopy(opt_cdup, name, namelen);
6703 } else {
6704 string_ncopy(opt_prefix, name, namelen);
6705 }
6707 return OK;
6708 }
6710 static int
6711 load_repo_info(void)
6712 {
6713 const char *rev_parse_argv[] = {
6714 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6715 "--show-cdup", "--show-prefix", NULL
6716 };
6718 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6719 }
6722 /*
6723 * Main
6724 */
6726 static const char usage[] =
6727 "tig " TIG_VERSION " (" __DATE__ ")\n"
6728 "\n"
6729 "Usage: tig [options] [revs] [--] [paths]\n"
6730 " or: tig show [options] [revs] [--] [paths]\n"
6731 " or: tig blame [options] [rev] [--] path\n"
6732 " or: tig status\n"
6733 " or: tig < [git command output]\n"
6734 "\n"
6735 "Options:\n"
6736 " -v, --version Show version and exit\n"
6737 " -h, --help Show help message and exit";
6739 static void __NORETURN
6740 quit(int sig)
6741 {
6742 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6743 if (cursed)
6744 endwin();
6745 exit(0);
6746 }
6748 static void __NORETURN
6749 die(const char *err, ...)
6750 {
6751 va_list args;
6753 endwin();
6755 va_start(args, err);
6756 fputs("tig: ", stderr);
6757 vfprintf(stderr, err, args);
6758 fputs("\n", stderr);
6759 va_end(args);
6761 exit(1);
6762 }
6764 static void
6765 warn(const char *msg, ...)
6766 {
6767 va_list args;
6769 va_start(args, msg);
6770 fputs("tig warning: ", stderr);
6771 vfprintf(stderr, msg, args);
6772 fputs("\n", stderr);
6773 va_end(args);
6774 }
6776 static int
6777 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6778 {
6779 const char ***filter_args = data;
6781 return argv_append(filter_args, name) ? OK : ERR;
6782 }
6784 static void
6785 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6786 {
6787 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6788 const char **all_argv = NULL;
6790 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6791 !argv_append_array(&all_argv, argv) ||
6792 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6793 die("Failed to split arguments");
6794 argv_free(all_argv);
6795 free(all_argv);
6796 }
6798 static void
6799 filter_options(const char *argv[])
6800 {
6801 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6802 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6803 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6804 }
6806 static enum request
6807 parse_options(int argc, const char *argv[])
6808 {
6809 enum request request = REQ_VIEW_MAIN;
6810 const char *subcommand;
6811 bool seen_dashdash = FALSE;
6812 const char **filter_argv = NULL;
6813 int i;
6815 if (!isatty(STDIN_FILENO))
6816 return REQ_VIEW_PAGER;
6818 if (argc <= 1)
6819 return REQ_VIEW_MAIN;
6821 subcommand = argv[1];
6822 if (!strcmp(subcommand, "status")) {
6823 if (argc > 2)
6824 warn("ignoring arguments after `%s'", subcommand);
6825 return REQ_VIEW_STATUS;
6827 } else if (!strcmp(subcommand, "blame")) {
6828 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6829 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6830 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6832 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6833 die("invalid number of options to blame\n\n%s", usage);
6835 if (opt_rev_argv) {
6836 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6837 }
6839 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6840 return REQ_VIEW_BLAME;
6842 } else if (!strcmp(subcommand, "show")) {
6843 request = REQ_VIEW_DIFF;
6845 } else {
6846 subcommand = NULL;
6847 }
6849 for (i = 1 + !!subcommand; i < argc; i++) {
6850 const char *opt = argv[i];
6852 if (seen_dashdash) {
6853 argv_append(&opt_file_argv, opt);
6854 continue;
6856 } else if (!strcmp(opt, "--")) {
6857 seen_dashdash = TRUE;
6858 continue;
6860 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6861 printf("tig version %s\n", TIG_VERSION);
6862 quit(0);
6864 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6865 printf("%s\n", usage);
6866 quit(0);
6868 } else if (!strcmp(opt, "--all")) {
6869 argv_append(&opt_rev_argv, opt);
6870 continue;
6871 }
6873 if (!argv_append(&filter_argv, opt))
6874 die("command too long");
6875 }
6877 if (filter_argv)
6878 filter_options(filter_argv);
6880 return request;
6881 }
6883 int
6884 main(int argc, const char *argv[])
6885 {
6886 const char *codeset = "UTF-8";
6887 enum request request = parse_options(argc, argv);
6888 struct view *view;
6890 signal(SIGINT, quit);
6891 signal(SIGPIPE, SIG_IGN);
6893 if (setlocale(LC_ALL, "")) {
6894 codeset = nl_langinfo(CODESET);
6895 }
6897 if (load_repo_info() == ERR)
6898 die("Failed to load repo info.");
6900 if (load_options() == ERR)
6901 die("Failed to load user config.");
6903 if (load_git_config() == ERR)
6904 die("Failed to load repo config.");
6906 /* Require a git repository unless when running in pager mode. */
6907 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6908 die("Not a git repository");
6910 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6911 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6912 if (opt_iconv_in == ICONV_NONE)
6913 die("Failed to initialize character set conversion");
6914 }
6916 if (codeset && strcmp(codeset, "UTF-8")) {
6917 opt_iconv_out = iconv_open(codeset, "UTF-8");
6918 if (opt_iconv_out == ICONV_NONE)
6919 die("Failed to initialize character set conversion");
6920 }
6922 if (load_refs() == ERR)
6923 die("Failed to load refs.");
6925 init_display();
6927 while (view_driver(display[current_view], request)) {
6928 int key = get_input(0);
6930 view = display[current_view];
6931 request = get_keybinding(view->keymap, key);
6933 /* Some low-level request handling. This keeps access to
6934 * status_win restricted. */
6935 switch (request) {
6936 case REQ_NONE:
6937 report("Unknown key, press %s for help",
6938 get_key(view->keymap, REQ_VIEW_HELP));
6939 break;
6940 case REQ_PROMPT:
6941 {
6942 char *cmd = read_prompt(":");
6944 if (cmd && isdigit(*cmd)) {
6945 int lineno = view->lineno + 1;
6947 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6948 select_view_line(view, lineno - 1);
6949 report("");
6950 } else {
6951 report("Unable to parse '%s' as a line number", cmd);
6952 }
6954 } else if (cmd) {
6955 struct view *next = VIEW(REQ_VIEW_PAGER);
6956 const char *argv[SIZEOF_ARG] = { "git" };
6957 int argc = 1;
6959 /* When running random commands, initially show the
6960 * command in the title. However, it maybe later be
6961 * overwritten if a commit line is selected. */
6962 string_ncopy(next->ref, cmd, strlen(cmd));
6964 if (!argv_from_string(argv, &argc, cmd)) {
6965 report("Too many arguments");
6966 } else if (!prepare_update(next, argv, NULL)) {
6967 report("Failed to format command");
6968 } else {
6969 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
6970 }
6971 }
6973 request = REQ_NONE;
6974 break;
6975 }
6976 case REQ_SEARCH:
6977 case REQ_SEARCH_BACK:
6978 {
6979 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6980 char *search = read_prompt(prompt);
6982 if (search)
6983 string_ncopy(opt_search, search, strlen(search));
6984 else if (*opt_search)
6985 request = request == REQ_SEARCH ?
6986 REQ_FIND_NEXT :
6987 REQ_FIND_PREV;
6988 else
6989 request = REQ_NONE;
6990 break;
6991 }
6992 default:
6993 break;
6994 }
6995 }
6997 quit(0);
6999 return 0;
7000 }