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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 /* Default command arguments. */
1444 const char **argv;
1445 /* Open and reads in all view content. */
1446 bool (*open)(struct view *view, enum open_flags flags);
1447 /* Read one line; updates view->line. */
1448 bool (*read)(struct view *view, char *data);
1449 /* Draw one line; @lineno must be < view->height. */
1450 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1451 /* Depending on view handle a special requests. */
1452 enum request (*request)(struct view *view, enum request request, struct line *line);
1453 /* Search for regexp in a line. */
1454 bool (*grep)(struct view *view, struct line *line);
1455 /* Select line */
1456 void (*select)(struct view *view, struct line *line);
1457 /* Prepare view for loading */
1458 bool (*prepare)(struct view *view);
1459 };
1461 static struct view_ops blame_ops;
1462 static struct view_ops blob_ops;
1463 static struct view_ops diff_ops;
1464 static struct view_ops help_ops;
1465 static struct view_ops log_ops;
1466 static struct view_ops main_ops;
1467 static struct view_ops pager_ops;
1468 static struct view_ops stage_ops;
1469 static struct view_ops status_ops;
1470 static struct view_ops tree_ops;
1471 static struct view_ops branch_ops;
1473 #define VIEW_STR(type, name, ref, ops, map, git) \
1474 { type, name, ref, ops, map, git }
1476 #define VIEW_(id, name, ops, git, ref) \
1477 VIEW_STR(VIEW_##id, name, ref, ops, KEYMAP_##id, git)
1479 static struct view views[] = {
1480 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1481 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1482 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1483 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1484 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1485 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1486 VIEW_(BRANCH, "branch", &branch_ops, TRUE, ref_head),
1487 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1488 VIEW_(PAGER, "pager", &pager_ops, FALSE, ""),
1489 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1490 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1491 };
1493 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1495 #define foreach_view(view, i) \
1496 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1498 #define view_is_displayed(view) \
1499 (view == display[0] || view == display[1])
1501 static enum request
1502 view_request(struct view *view, enum request request)
1503 {
1504 if (!view || !view->lines)
1505 return request;
1506 return view->ops->request(view, request, &view->line[view->lineno]);
1507 }
1510 /*
1511 * View drawing.
1512 */
1514 static inline void
1515 set_view_attr(struct view *view, enum line_type type)
1516 {
1517 if (!view->curline->selected && view->curtype != type) {
1518 (void) wattrset(view->win, get_line_attr(type));
1519 wchgat(view->win, -1, 0, type, NULL);
1520 view->curtype = type;
1521 }
1522 }
1524 #define VIEW_MAX_LEN(view) ((view)->width + (view)->yoffset - (view)->col)
1526 static int
1527 draw_chars(struct view *view, enum line_type type, const char *string,
1528 int max_len, bool use_tilde)
1529 {
1530 static char out_buffer[BUFSIZ * 2];
1531 int len = 0;
1532 int col = 0;
1533 int trimmed = FALSE;
1534 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1536 if (max_len <= 0)
1537 return 0;
1539 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1541 set_view_attr(view, type);
1542 if (len > 0) {
1543 if (opt_iconv_out != ICONV_NONE) {
1544 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
1545 size_t inlen = len + 1;
1547 char *outbuf = out_buffer;
1548 size_t outlen = sizeof(out_buffer);
1550 size_t ret;
1552 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1553 if (ret != (size_t) -1) {
1554 string = out_buffer;
1555 len = sizeof(out_buffer) - outlen;
1556 }
1557 }
1559 waddnstr(view->win, string, len);
1561 if (trimmed && use_tilde) {
1562 set_view_attr(view, LINE_DELIMITER);
1563 waddch(view->win, '~');
1564 col++;
1565 }
1566 }
1568 return col;
1569 }
1571 static int
1572 draw_space(struct view *view, enum line_type type, int max, int spaces)
1573 {
1574 static char space[] = " ";
1575 int col = 0;
1577 spaces = MIN(max, spaces);
1579 while (spaces > 0) {
1580 int len = MIN(spaces, sizeof(space) - 1);
1582 col += draw_chars(view, type, space, len, FALSE);
1583 spaces -= len;
1584 }
1586 return col;
1587 }
1589 static bool
1590 draw_text(struct view *view, enum line_type type, const char *string)
1591 {
1592 char text[SIZEOF_STR];
1594 do {
1595 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1597 view->col += draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE);
1598 string += pos;
1599 } while (*string && VIEW_MAX_LEN(view) > 0);
1601 return VIEW_MAX_LEN(view) <= 0;
1602 }
1604 static bool
1605 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
1606 {
1607 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1608 int max = VIEW_MAX_LEN(view);
1609 int i;
1611 if (max < size)
1612 size = max;
1614 set_view_attr(view, type);
1615 /* Using waddch() instead of waddnstr() ensures that
1616 * they'll be rendered correctly for the cursor line. */
1617 for (i = skip; i < size; i++)
1618 waddch(view->win, graphic[i]);
1620 view->col += size;
1621 if (separator) {
1622 if (size < max && skip <= size)
1623 waddch(view->win, ' ');
1624 view->col++;
1625 }
1627 return VIEW_MAX_LEN(view) <= 0;
1628 }
1630 static bool
1631 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1632 {
1633 int max = MIN(VIEW_MAX_LEN(view), len);
1634 int col;
1636 if (text)
1637 col = draw_chars(view, type, text, max - 1, trim);
1638 else
1639 col = draw_space(view, type, max - 1, max - 1);
1641 view->col += col;
1642 view->col += draw_space(view, LINE_DEFAULT, max - col, max - col);
1643 return VIEW_MAX_LEN(view) <= 0;
1644 }
1646 static bool
1647 draw_date(struct view *view, struct time *time)
1648 {
1649 const char *date = mkdate(time, opt_date);
1650 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
1652 return draw_field(view, LINE_DATE, date, cols, FALSE);
1653 }
1655 static bool
1656 draw_author(struct view *view, const char *author)
1657 {
1658 bool trim = opt_author_cols == 0 || opt_author_cols > 5;
1659 bool abbreviate = opt_author == AUTHOR_ABBREVIATED || !trim;
1661 if (abbreviate && author)
1662 author = get_author_initials(author);
1664 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
1665 }
1667 static bool
1668 draw_mode(struct view *view, mode_t mode)
1669 {
1670 const char *str;
1672 if (S_ISDIR(mode))
1673 str = "drwxr-xr-x";
1674 else if (S_ISLNK(mode))
1675 str = "lrwxrwxrwx";
1676 else if (S_ISGITLINK(mode))
1677 str = "m---------";
1678 else if (S_ISREG(mode) && mode & S_IXUSR)
1679 str = "-rwxr-xr-x";
1680 else if (S_ISREG(mode))
1681 str = "-rw-r--r--";
1682 else
1683 str = "----------";
1685 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
1686 }
1688 static bool
1689 draw_lineno(struct view *view, unsigned int lineno)
1690 {
1691 char number[10];
1692 int digits3 = view->digits < 3 ? 3 : view->digits;
1693 int max = MIN(VIEW_MAX_LEN(view), digits3);
1694 char *text = NULL;
1695 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
1697 lineno += view->offset + 1;
1698 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1699 static char fmt[] = "%1ld";
1701 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
1702 if (string_format(number, fmt, lineno))
1703 text = number;
1704 }
1705 if (text)
1706 view->col += draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
1707 else
1708 view->col += draw_space(view, LINE_LINE_NUMBER, max, digits3);
1709 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
1710 }
1712 static bool
1713 draw_view_line(struct view *view, unsigned int lineno)
1714 {
1715 struct line *line;
1716 bool selected = (view->offset + lineno == view->lineno);
1718 assert(view_is_displayed(view));
1720 if (view->offset + lineno >= view->lines)
1721 return FALSE;
1723 line = &view->line[view->offset + lineno];
1725 wmove(view->win, lineno, 0);
1726 if (line->cleareol)
1727 wclrtoeol(view->win);
1728 view->col = 0;
1729 view->curline = line;
1730 view->curtype = LINE_NONE;
1731 line->selected = FALSE;
1732 line->dirty = line->cleareol = 0;
1734 if (selected) {
1735 set_view_attr(view, LINE_CURSOR);
1736 line->selected = TRUE;
1737 view->ops->select(view, line);
1738 }
1740 return view->ops->draw(view, line, lineno);
1741 }
1743 static void
1744 redraw_view_dirty(struct view *view)
1745 {
1746 bool dirty = FALSE;
1747 int lineno;
1749 for (lineno = 0; lineno < view->height; lineno++) {
1750 if (view->offset + lineno >= view->lines)
1751 break;
1752 if (!view->line[view->offset + lineno].dirty)
1753 continue;
1754 dirty = TRUE;
1755 if (!draw_view_line(view, lineno))
1756 break;
1757 }
1759 if (!dirty)
1760 return;
1761 wnoutrefresh(view->win);
1762 }
1764 static void
1765 redraw_view_from(struct view *view, int lineno)
1766 {
1767 assert(0 <= lineno && lineno < view->height);
1769 for (; lineno < view->height; lineno++) {
1770 if (!draw_view_line(view, lineno))
1771 break;
1772 }
1774 wnoutrefresh(view->win);
1775 }
1777 static void
1778 redraw_view(struct view *view)
1779 {
1780 werase(view->win);
1781 redraw_view_from(view, 0);
1782 }
1785 static void
1786 update_view_title(struct view *view)
1787 {
1788 char buf[SIZEOF_STR];
1789 char state[SIZEOF_STR];
1790 size_t bufpos = 0, statelen = 0;
1791 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
1793 assert(view_is_displayed(view));
1795 if (view->type != VIEW_STATUS && view->lines) {
1796 unsigned int view_lines = view->offset + view->height;
1797 unsigned int lines = view->lines
1798 ? MIN(view_lines, view->lines) * 100 / view->lines
1799 : 0;
1801 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
1802 view->ops->type,
1803 view->lineno + 1,
1804 view->lines,
1805 lines);
1807 }
1809 if (view->pipe) {
1810 time_t secs = time(NULL) - view->start_time;
1812 /* Three git seconds are a long time ... */
1813 if (secs > 2)
1814 string_format_from(state, &statelen, " loading %lds", secs);
1815 }
1817 string_format_from(buf, &bufpos, "[%s]", view->name);
1818 if (*view->ref && bufpos < view->width) {
1819 size_t refsize = strlen(view->ref);
1820 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1822 if (minsize < view->width)
1823 refsize = view->width - minsize + 7;
1824 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1825 }
1827 if (statelen && bufpos < view->width) {
1828 string_format_from(buf, &bufpos, "%s", state);
1829 }
1831 if (view == display[current_view])
1832 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
1833 else
1834 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
1836 mvwaddnstr(window, 0, 0, buf, bufpos);
1837 wclrtoeol(window);
1838 wnoutrefresh(window);
1839 }
1841 static int
1842 apply_step(double step, int value)
1843 {
1844 if (step >= 1)
1845 return (int) step;
1846 value *= step + 0.01;
1847 return value ? value : 1;
1848 }
1850 static void
1851 resize_display(void)
1852 {
1853 int offset, i;
1854 struct view *base = display[0];
1855 struct view *view = display[1] ? display[1] : display[0];
1857 /* Setup window dimensions */
1859 getmaxyx(stdscr, base->height, base->width);
1861 /* Make room for the status window. */
1862 base->height -= 1;
1864 if (view != base) {
1865 /* Horizontal split. */
1866 view->width = base->width;
1867 view->height = apply_step(opt_scale_split_view, base->height);
1868 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
1869 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
1870 base->height -= view->height;
1872 /* Make room for the title bar. */
1873 view->height -= 1;
1874 }
1876 /* Make room for the title bar. */
1877 base->height -= 1;
1879 offset = 0;
1881 foreach_displayed_view (view, i) {
1882 if (!display_win[i]) {
1883 display_win[i] = newwin(view->height, view->width, offset, 0);
1884 if (!display_win[i])
1885 die("Failed to create %s view", view->name);
1887 scrollok(display_win[i], FALSE);
1889 display_title[i] = newwin(1, view->width, offset + view->height, 0);
1890 if (!display_title[i])
1891 die("Failed to create title window");
1893 } else {
1894 wresize(display_win[i], view->height, view->width);
1895 mvwin(display_win[i], offset, 0);
1896 mvwin(display_title[i], offset + view->height, 0);
1897 }
1899 view->win = display_win[i];
1901 offset += view->height + 1;
1902 }
1903 }
1905 static void
1906 redraw_display(bool clear)
1907 {
1908 struct view *view;
1909 int i;
1911 foreach_displayed_view (view, i) {
1912 if (clear)
1913 wclear(view->win);
1914 redraw_view(view);
1915 update_view_title(view);
1916 }
1917 }
1920 /*
1921 * Option management
1922 */
1924 #define TOGGLE_MENU \
1925 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
1926 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
1927 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
1928 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
1929 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
1930 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
1932 static void
1933 toggle_option(enum request request)
1934 {
1935 const struct {
1936 enum request request;
1937 const struct enum_map *map;
1938 size_t map_size;
1939 } data[] = {
1940 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
1941 TOGGLE_MENU
1942 #undef TOGGLE_
1943 };
1944 const struct menu_item menu[] = {
1945 #define TOGGLE_(id, key, help, value, map) { key, help, value },
1946 TOGGLE_MENU
1947 #undef TOGGLE_
1948 { 0 }
1949 };
1950 int i = 0;
1952 if (request == REQ_OPTIONS) {
1953 if (!prompt_menu("Toggle option", menu, &i))
1954 return;
1955 } else {
1956 while (i < ARRAY_SIZE(data) && data[i].request != request)
1957 i++;
1958 if (i >= ARRAY_SIZE(data))
1959 die("Invalid request (%d)", request);
1960 }
1962 if (data[i].map != NULL) {
1963 unsigned int *opt = menu[i].data;
1965 *opt = (*opt + 1) % data[i].map_size;
1966 redraw_display(FALSE);
1967 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
1969 } else {
1970 bool *option = menu[i].data;
1972 *option = !*option;
1973 redraw_display(FALSE);
1974 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
1975 }
1976 }
1978 static void
1979 maximize_view(struct view *view)
1980 {
1981 memset(display, 0, sizeof(display));
1982 current_view = 0;
1983 display[current_view] = view;
1984 resize_display();
1985 redraw_display(FALSE);
1986 report("");
1987 }
1990 /*
1991 * Navigation
1992 */
1994 static bool
1995 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
1996 {
1997 if (lineno >= view->lines)
1998 lineno = view->lines > 0 ? view->lines - 1 : 0;
2000 if (offset > lineno || offset + view->height <= lineno) {
2001 unsigned long half = view->height / 2;
2003 if (lineno > half)
2004 offset = lineno - half;
2005 else
2006 offset = 0;
2007 }
2009 if (offset != view->offset || lineno != view->lineno) {
2010 view->offset = offset;
2011 view->lineno = lineno;
2012 return TRUE;
2013 }
2015 return FALSE;
2016 }
2018 /* Scrolling backend */
2019 static void
2020 do_scroll_view(struct view *view, int lines)
2021 {
2022 bool redraw_current_line = FALSE;
2024 /* The rendering expects the new offset. */
2025 view->offset += lines;
2027 assert(0 <= view->offset && view->offset < view->lines);
2028 assert(lines);
2030 /* Move current line into the view. */
2031 if (view->lineno < view->offset) {
2032 view->lineno = view->offset;
2033 redraw_current_line = TRUE;
2034 } else if (view->lineno >= view->offset + view->height) {
2035 view->lineno = view->offset + view->height - 1;
2036 redraw_current_line = TRUE;
2037 }
2039 assert(view->offset <= view->lineno && view->lineno < view->lines);
2041 /* Redraw the whole screen if scrolling is pointless. */
2042 if (view->height < ABS(lines)) {
2043 redraw_view(view);
2045 } else {
2046 int line = lines > 0 ? view->height - lines : 0;
2047 int end = line + ABS(lines);
2049 scrollok(view->win, TRUE);
2050 wscrl(view->win, lines);
2051 scrollok(view->win, FALSE);
2053 while (line < end && draw_view_line(view, line))
2054 line++;
2056 if (redraw_current_line)
2057 draw_view_line(view, view->lineno - view->offset);
2058 wnoutrefresh(view->win);
2059 }
2061 view->has_scrolled = TRUE;
2062 report("");
2063 }
2065 /* Scroll frontend */
2066 static void
2067 scroll_view(struct view *view, enum request request)
2068 {
2069 int lines = 1;
2071 assert(view_is_displayed(view));
2073 switch (request) {
2074 case REQ_SCROLL_FIRST_COL:
2075 view->yoffset = 0;
2076 redraw_view_from(view, 0);
2077 report("");
2078 return;
2079 case REQ_SCROLL_LEFT:
2080 if (view->yoffset == 0) {
2081 report("Cannot scroll beyond the first column");
2082 return;
2083 }
2084 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2085 view->yoffset = 0;
2086 else
2087 view->yoffset -= apply_step(opt_hscroll, view->width);
2088 redraw_view_from(view, 0);
2089 report("");
2090 return;
2091 case REQ_SCROLL_RIGHT:
2092 view->yoffset += apply_step(opt_hscroll, view->width);
2093 redraw_view(view);
2094 report("");
2095 return;
2096 case REQ_SCROLL_PAGE_DOWN:
2097 lines = view->height;
2098 case REQ_SCROLL_LINE_DOWN:
2099 if (view->offset + lines > view->lines)
2100 lines = view->lines - view->offset;
2102 if (lines == 0 || view->offset + view->height >= view->lines) {
2103 report("Cannot scroll beyond the last line");
2104 return;
2105 }
2106 break;
2108 case REQ_SCROLL_PAGE_UP:
2109 lines = view->height;
2110 case REQ_SCROLL_LINE_UP:
2111 if (lines > view->offset)
2112 lines = view->offset;
2114 if (lines == 0) {
2115 report("Cannot scroll beyond the first line");
2116 return;
2117 }
2119 lines = -lines;
2120 break;
2122 default:
2123 die("request %d not handled in switch", request);
2124 }
2126 do_scroll_view(view, lines);
2127 }
2129 /* Cursor moving */
2130 static void
2131 move_view(struct view *view, enum request request)
2132 {
2133 int scroll_steps = 0;
2134 int steps;
2136 switch (request) {
2137 case REQ_MOVE_FIRST_LINE:
2138 steps = -view->lineno;
2139 break;
2141 case REQ_MOVE_LAST_LINE:
2142 steps = view->lines - view->lineno - 1;
2143 break;
2145 case REQ_MOVE_PAGE_UP:
2146 steps = view->height > view->lineno
2147 ? -view->lineno : -view->height;
2148 break;
2150 case REQ_MOVE_PAGE_DOWN:
2151 steps = view->lineno + view->height >= view->lines
2152 ? view->lines - view->lineno - 1 : view->height;
2153 break;
2155 case REQ_MOVE_UP:
2156 steps = -1;
2157 break;
2159 case REQ_MOVE_DOWN:
2160 steps = 1;
2161 break;
2163 default:
2164 die("request %d not handled in switch", request);
2165 }
2167 if (steps <= 0 && view->lineno == 0) {
2168 report("Cannot move beyond the first line");
2169 return;
2171 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2172 report("Cannot move beyond the last line");
2173 return;
2174 }
2176 /* Move the current line */
2177 view->lineno += steps;
2178 assert(0 <= view->lineno && view->lineno < view->lines);
2180 /* Check whether the view needs to be scrolled */
2181 if (view->lineno < view->offset ||
2182 view->lineno >= view->offset + view->height) {
2183 scroll_steps = steps;
2184 if (steps < 0 && -steps > view->offset) {
2185 scroll_steps = -view->offset;
2187 } else if (steps > 0) {
2188 if (view->lineno == view->lines - 1 &&
2189 view->lines > view->height) {
2190 scroll_steps = view->lines - view->offset - 1;
2191 if (scroll_steps >= view->height)
2192 scroll_steps -= view->height - 1;
2193 }
2194 }
2195 }
2197 if (!view_is_displayed(view)) {
2198 view->offset += scroll_steps;
2199 assert(0 <= view->offset && view->offset < view->lines);
2200 view->ops->select(view, &view->line[view->lineno]);
2201 return;
2202 }
2204 /* Repaint the old "current" line if we be scrolling */
2205 if (ABS(steps) < view->height)
2206 draw_view_line(view, view->lineno - steps - view->offset);
2208 if (scroll_steps) {
2209 do_scroll_view(view, scroll_steps);
2210 return;
2211 }
2213 /* Draw the current line */
2214 draw_view_line(view, view->lineno - view->offset);
2216 wnoutrefresh(view->win);
2217 report("");
2218 }
2221 /*
2222 * Searching
2223 */
2225 static void search_view(struct view *view, enum request request);
2227 static bool
2228 grep_text(struct view *view, const char *text[])
2229 {
2230 regmatch_t pmatch;
2231 size_t i;
2233 for (i = 0; text[i]; i++)
2234 if (*text[i] &&
2235 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2236 return TRUE;
2237 return FALSE;
2238 }
2240 static void
2241 select_view_line(struct view *view, unsigned long lineno)
2242 {
2243 unsigned long old_lineno = view->lineno;
2244 unsigned long old_offset = view->offset;
2246 if (goto_view_line(view, view->offset, lineno)) {
2247 if (view_is_displayed(view)) {
2248 if (old_offset != view->offset) {
2249 redraw_view(view);
2250 } else {
2251 draw_view_line(view, old_lineno - view->offset);
2252 draw_view_line(view, view->lineno - view->offset);
2253 wnoutrefresh(view->win);
2254 }
2255 } else {
2256 view->ops->select(view, &view->line[view->lineno]);
2257 }
2258 }
2259 }
2261 static void
2262 find_next(struct view *view, enum request request)
2263 {
2264 unsigned long lineno = view->lineno;
2265 int direction;
2267 if (!*view->grep) {
2268 if (!*opt_search)
2269 report("No previous search");
2270 else
2271 search_view(view, request);
2272 return;
2273 }
2275 switch (request) {
2276 case REQ_SEARCH:
2277 case REQ_FIND_NEXT:
2278 direction = 1;
2279 break;
2281 case REQ_SEARCH_BACK:
2282 case REQ_FIND_PREV:
2283 direction = -1;
2284 break;
2286 default:
2287 return;
2288 }
2290 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2291 lineno += direction;
2293 /* Note, lineno is unsigned long so will wrap around in which case it
2294 * will become bigger than view->lines. */
2295 for (; lineno < view->lines; lineno += direction) {
2296 if (view->ops->grep(view, &view->line[lineno])) {
2297 select_view_line(view, lineno);
2298 report("Line %ld matches '%s'", lineno + 1, view->grep);
2299 return;
2300 }
2301 }
2303 report("No match found for '%s'", view->grep);
2304 }
2306 static void
2307 search_view(struct view *view, enum request request)
2308 {
2309 int regex_err;
2311 if (view->regex) {
2312 regfree(view->regex);
2313 *view->grep = 0;
2314 } else {
2315 view->regex = calloc(1, sizeof(*view->regex));
2316 if (!view->regex)
2317 return;
2318 }
2320 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2321 if (regex_err != 0) {
2322 char buf[SIZEOF_STR] = "unknown error";
2324 regerror(regex_err, view->regex, buf, sizeof(buf));
2325 report("Search failed: %s", buf);
2326 return;
2327 }
2329 string_copy(view->grep, opt_search);
2331 find_next(view, request);
2332 }
2334 /*
2335 * Incremental updating
2336 */
2338 static void
2339 reset_view(struct view *view)
2340 {
2341 int i;
2343 for (i = 0; i < view->lines; i++)
2344 free(view->line[i].data);
2345 free(view->line);
2347 view->p_offset = view->offset;
2348 view->p_yoffset = view->yoffset;
2349 view->p_lineno = view->lineno;
2351 view->line = NULL;
2352 view->offset = 0;
2353 view->yoffset = 0;
2354 view->lines = 0;
2355 view->lineno = 0;
2356 view->vid[0] = 0;
2357 view->update_secs = 0;
2358 }
2360 static const char *
2361 format_arg(const char *name)
2362 {
2363 static struct {
2364 const char *name;
2365 size_t namelen;
2366 const char *value;
2367 const char *value_if_empty;
2368 } vars[] = {
2369 #define FORMAT_VAR(name, value, value_if_empty) \
2370 { name, STRING_SIZE(name), value, value_if_empty }
2371 FORMAT_VAR("%(directory)", opt_path, "."),
2372 FORMAT_VAR("%(file)", opt_file, ""),
2373 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2374 FORMAT_VAR("%(head)", ref_head, ""),
2375 FORMAT_VAR("%(commit)", ref_commit, ""),
2376 FORMAT_VAR("%(blob)", ref_blob, ""),
2377 FORMAT_VAR("%(branch)", ref_branch, ""),
2378 };
2379 int i;
2381 for (i = 0; i < ARRAY_SIZE(vars); i++)
2382 if (!strncmp(name, vars[i].name, vars[i].namelen))
2383 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2385 report("Unknown replacement: `%s`", name);
2386 return NULL;
2387 }
2389 static bool
2390 format_argv(const char ***dst_argv, const char *src_argv[], bool replace, bool first)
2391 {
2392 char buf[SIZEOF_STR];
2393 int argc;
2395 argv_free(*dst_argv);
2397 for (argc = 0; src_argv[argc]; argc++) {
2398 const char *arg = src_argv[argc];
2399 size_t bufpos = 0;
2401 if (!strcmp(arg, "%(fileargs)")) {
2402 if (!argv_append_array(dst_argv, opt_file_argv))
2403 break;
2404 continue;
2406 } else if (!strcmp(arg, "%(diffargs)")) {
2407 if (!argv_append_array(dst_argv, opt_diff_argv))
2408 break;
2409 continue;
2411 } else if (!strcmp(arg, "%(blameargs)")) {
2412 if (!argv_append_array(dst_argv, opt_blame_argv))
2413 break;
2414 continue;
2416 } else if (!strcmp(arg, "%(revargs)") ||
2417 (first && !strcmp(arg, "%(commit)"))) {
2418 if (!argv_append_array(dst_argv, opt_rev_argv))
2419 break;
2420 continue;
2421 }
2423 while (arg) {
2424 char *next = strstr(arg, "%(");
2425 int len = next - arg;
2426 const char *value;
2428 if (!next || !replace) {
2429 len = strlen(arg);
2430 value = "";
2432 } else {
2433 value = format_arg(next);
2435 if (!value) {
2436 return FALSE;
2437 }
2438 }
2440 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2441 return FALSE;
2443 arg = next && replace ? strchr(next, ')') + 1 : NULL;
2444 }
2446 if (!argv_append(dst_argv, buf))
2447 break;
2448 }
2450 return src_argv[argc] == NULL;
2451 }
2453 static bool
2454 restore_view_position(struct view *view)
2455 {
2456 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2457 return FALSE;
2459 /* Changing the view position cancels the restoring. */
2460 /* FIXME: Changing back to the first line is not detected. */
2461 if (view->offset != 0 || view->lineno != 0) {
2462 view->p_restore = FALSE;
2463 return FALSE;
2464 }
2466 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2467 view_is_displayed(view))
2468 werase(view->win);
2470 view->yoffset = view->p_yoffset;
2471 view->p_restore = FALSE;
2473 return TRUE;
2474 }
2476 static void
2477 end_update(struct view *view, bool force)
2478 {
2479 if (!view->pipe)
2480 return;
2481 while (!view->ops->read(view, NULL))
2482 if (!force)
2483 return;
2484 if (force)
2485 io_kill(view->pipe);
2486 io_done(view->pipe);
2487 view->pipe = NULL;
2488 }
2490 static void
2491 setup_update(struct view *view, const char *vid)
2492 {
2493 reset_view(view);
2494 string_copy_rev(view->vid, vid);
2495 view->pipe = &view->io;
2496 view->start_time = time(NULL);
2497 }
2499 static bool
2500 prepare_io(struct view *view, const char *dir, const char *argv[], bool replace)
2501 {
2502 view->dir = dir;
2503 return format_argv(&view->argv, argv, replace, !view->prev);
2504 }
2506 static bool
2507 prepare_update(struct view *view, const char *argv[], const char *dir)
2508 {
2509 if (view->pipe)
2510 end_update(view, TRUE);
2511 return prepare_io(view, dir, argv, FALSE);
2512 }
2514 static bool
2515 start_update(struct view *view, const char **argv, const char *dir)
2516 {
2517 if (view->pipe)
2518 io_done(view->pipe);
2519 return prepare_io(view, dir, argv, FALSE) &&
2520 io_run(&view->io, IO_RD, dir, view->argv);
2521 }
2523 static bool
2524 prepare_update_file(struct view *view, const char *name)
2525 {
2526 if (view->pipe)
2527 end_update(view, TRUE);
2528 argv_free(view->argv);
2529 return io_open(&view->io, "%s/%s", opt_cdup[0] ? opt_cdup : ".", name);
2530 }
2532 static bool
2533 begin_update(struct view *view, bool refresh)
2534 {
2535 if (view->pipe)
2536 end_update(view, TRUE);
2538 if (!refresh) {
2539 if (view->ops->prepare) {
2540 if (!view->ops->prepare(view))
2541 return FALSE;
2542 } else if (!prepare_io(view, NULL, view->ops->argv, TRUE)) {
2543 return FALSE;
2544 }
2546 /* Put the current ref_* value to the view title ref
2547 * member. This is needed by the blob view. Most other
2548 * views sets it automatically after loading because the
2549 * first line is a commit line. */
2550 string_copy_rev(view->ref, view->id);
2551 }
2553 if (view->argv && view->argv[0] &&
2554 !io_run(&view->io, IO_RD, view->dir, view->argv))
2555 return FALSE;
2557 setup_update(view, view->id);
2559 return TRUE;
2560 }
2562 static bool
2563 update_view(struct view *view)
2564 {
2565 char out_buffer[BUFSIZ * 2];
2566 char *line;
2567 /* Clear the view and redraw everything since the tree sorting
2568 * might have rearranged things. */
2569 bool redraw = view->lines == 0;
2570 bool can_read = TRUE;
2572 if (!view->pipe)
2573 return TRUE;
2575 if (!io_can_read(view->pipe, FALSE)) {
2576 if (view->lines == 0 && view_is_displayed(view)) {
2577 time_t secs = time(NULL) - view->start_time;
2579 if (secs > 1 && secs > view->update_secs) {
2580 if (view->update_secs == 0)
2581 redraw_view(view);
2582 update_view_title(view);
2583 view->update_secs = secs;
2584 }
2585 }
2586 return TRUE;
2587 }
2589 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2590 if (opt_iconv_in != ICONV_NONE) {
2591 ICONV_CONST char *inbuf = line;
2592 size_t inlen = strlen(line) + 1;
2594 char *outbuf = out_buffer;
2595 size_t outlen = sizeof(out_buffer);
2597 size_t ret;
2599 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2600 if (ret != (size_t) -1)
2601 line = out_buffer;
2602 }
2604 if (!view->ops->read(view, line)) {
2605 report("Allocation failure");
2606 end_update(view, TRUE);
2607 return FALSE;
2608 }
2609 }
2611 {
2612 unsigned long lines = view->lines;
2613 int digits;
2615 for (digits = 0; lines; digits++)
2616 lines /= 10;
2618 /* Keep the displayed view in sync with line number scaling. */
2619 if (digits != view->digits) {
2620 view->digits = digits;
2621 if (opt_line_number || view->type == VIEW_BLAME)
2622 redraw = TRUE;
2623 }
2624 }
2626 if (io_error(view->pipe)) {
2627 report("Failed to read: %s", io_strerror(view->pipe));
2628 end_update(view, TRUE);
2630 } else if (io_eof(view->pipe)) {
2631 if (view_is_displayed(view))
2632 report("");
2633 end_update(view, FALSE);
2634 }
2636 if (restore_view_position(view))
2637 redraw = TRUE;
2639 if (!view_is_displayed(view))
2640 return TRUE;
2642 if (redraw)
2643 redraw_view_from(view, 0);
2644 else
2645 redraw_view_dirty(view);
2647 /* Update the title _after_ the redraw so that if the redraw picks up a
2648 * commit reference in view->ref it'll be available here. */
2649 update_view_title(view);
2650 return TRUE;
2651 }
2653 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2655 static struct line *
2656 add_line_data(struct view *view, void *data, enum line_type type)
2657 {
2658 struct line *line;
2660 if (!realloc_lines(&view->line, view->lines, 1))
2661 return NULL;
2663 line = &view->line[view->lines++];
2664 memset(line, 0, sizeof(*line));
2665 line->type = type;
2666 line->data = data;
2667 line->dirty = 1;
2669 return line;
2670 }
2672 static struct line *
2673 add_line_text(struct view *view, const char *text, enum line_type type)
2674 {
2675 char *data = text ? strdup(text) : NULL;
2677 return data ? add_line_data(view, data, type) : NULL;
2678 }
2680 static struct line *
2681 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2682 {
2683 char buf[SIZEOF_STR];
2684 va_list args;
2686 va_start(args, fmt);
2687 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2688 buf[0] = 0;
2689 va_end(args);
2691 return buf[0] ? add_line_text(view, buf, type) : NULL;
2692 }
2694 /*
2695 * View opening
2696 */
2698 static void
2699 open_view(struct view *prev, enum request request, enum open_flags flags)
2700 {
2701 bool split = !!(flags & OPEN_SPLIT);
2702 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2703 bool nomaximize = !!(flags & OPEN_REFRESH);
2704 struct view *view = VIEW(request);
2705 int nviews = displayed_views();
2706 struct view *base_view = display[0];
2708 if (view == prev && nviews == 1 && !reload) {
2709 report("Already in %s view", view->name);
2710 return;
2711 }
2713 if (view->git_dir && !opt_git_dir[0]) {
2714 report("The %s view is disabled in pager view", view->name);
2715 return;
2716 }
2718 if (split) {
2719 display[1] = view;
2720 current_view = 1;
2721 view->parent = prev;
2722 } else if (!nomaximize) {
2723 /* Maximize the current view. */
2724 memset(display, 0, sizeof(display));
2725 current_view = 0;
2726 display[current_view] = view;
2727 }
2729 /* No prev signals that this is the first loaded view. */
2730 if (prev && view != prev) {
2731 view->prev = prev;
2732 }
2734 /* Resize the view when switching between split- and full-screen,
2735 * or when switching between two different full-screen views. */
2736 if (nviews != displayed_views() ||
2737 (nviews == 1 && base_view != display[0]))
2738 resize_display();
2740 if (view->ops->open) {
2741 if (view->pipe)
2742 end_update(view, TRUE);
2743 if (!view->ops->open(view, flags)) {
2744 report("Failed to load %s view", view->name);
2745 return;
2746 }
2747 restore_view_position(view);
2749 } else if ((reload || strcmp(view->vid, view->id)) &&
2750 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
2751 report("Failed to load %s view", view->name);
2752 return;
2753 }
2755 if (split && prev->lineno - prev->offset >= prev->height) {
2756 /* Take the title line into account. */
2757 int lines = prev->lineno - prev->offset - prev->height + 1;
2759 /* Scroll the view that was split if the current line is
2760 * outside the new limited view. */
2761 do_scroll_view(prev, lines);
2762 }
2764 if (prev && view != prev && split && view_is_displayed(prev)) {
2765 /* "Blur" the previous view. */
2766 update_view_title(prev);
2767 }
2769 if (view->pipe && view->lines == 0) {
2770 /* Clear the old view and let the incremental updating refill
2771 * the screen. */
2772 werase(view->win);
2773 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2774 report("");
2775 } else if (view_is_displayed(view)) {
2776 redraw_view(view);
2777 report("");
2778 }
2779 }
2781 static void
2782 open_external_viewer(const char *argv[], const char *dir)
2783 {
2784 def_prog_mode(); /* save current tty modes */
2785 endwin(); /* restore original tty modes */
2786 io_run_fg(argv, dir);
2787 fprintf(stderr, "Press Enter to continue");
2788 getc(opt_tty);
2789 reset_prog_mode();
2790 redraw_display(TRUE);
2791 }
2793 static void
2794 open_mergetool(const char *file)
2795 {
2796 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2798 open_external_viewer(mergetool_argv, opt_cdup);
2799 }
2801 static void
2802 open_editor(const char *file)
2803 {
2804 const char *editor_argv[] = { "vi", file, NULL };
2805 const char *editor;
2807 editor = getenv("GIT_EDITOR");
2808 if (!editor && *opt_editor)
2809 editor = opt_editor;
2810 if (!editor)
2811 editor = getenv("VISUAL");
2812 if (!editor)
2813 editor = getenv("EDITOR");
2814 if (!editor)
2815 editor = "vi";
2817 editor_argv[0] = editor;
2818 open_external_viewer(editor_argv, opt_cdup);
2819 }
2821 static void
2822 open_run_request(enum request request)
2823 {
2824 struct run_request *req = get_run_request(request);
2825 const char **argv = NULL;
2827 if (!req) {
2828 report("Unknown run request");
2829 return;
2830 }
2832 if (format_argv(&argv, req->argv, TRUE, FALSE))
2833 open_external_viewer(argv, NULL);
2834 if (argv)
2835 argv_free(argv);
2836 free(argv);
2837 }
2839 /*
2840 * User request switch noodle
2841 */
2843 static int
2844 view_driver(struct view *view, enum request request)
2845 {
2846 int i;
2848 if (request == REQ_NONE)
2849 return TRUE;
2851 if (request > REQ_NONE) {
2852 open_run_request(request);
2853 view_request(view, REQ_REFRESH);
2854 return TRUE;
2855 }
2857 request = view_request(view, request);
2858 if (request == REQ_NONE)
2859 return TRUE;
2861 switch (request) {
2862 case REQ_MOVE_UP:
2863 case REQ_MOVE_DOWN:
2864 case REQ_MOVE_PAGE_UP:
2865 case REQ_MOVE_PAGE_DOWN:
2866 case REQ_MOVE_FIRST_LINE:
2867 case REQ_MOVE_LAST_LINE:
2868 move_view(view, request);
2869 break;
2871 case REQ_SCROLL_FIRST_COL:
2872 case REQ_SCROLL_LEFT:
2873 case REQ_SCROLL_RIGHT:
2874 case REQ_SCROLL_LINE_DOWN:
2875 case REQ_SCROLL_LINE_UP:
2876 case REQ_SCROLL_PAGE_DOWN:
2877 case REQ_SCROLL_PAGE_UP:
2878 scroll_view(view, request);
2879 break;
2881 case REQ_VIEW_BLAME:
2882 if (!opt_file[0]) {
2883 report("No file chosen, press %s to open tree view",
2884 get_key(view->keymap, REQ_VIEW_TREE));
2885 break;
2886 }
2887 open_view(view, request, OPEN_DEFAULT);
2888 break;
2890 case REQ_VIEW_BLOB:
2891 if (!ref_blob[0]) {
2892 report("No file chosen, press %s to open tree view",
2893 get_key(view->keymap, REQ_VIEW_TREE));
2894 break;
2895 }
2896 open_view(view, request, OPEN_DEFAULT);
2897 break;
2899 case REQ_VIEW_PAGER:
2900 if (view == NULL) {
2901 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2902 die("Failed to open stdin");
2903 open_view(view, request, OPEN_PREPARED);
2904 break;
2905 }
2907 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2908 report("No pager content, press %s to run command from prompt",
2909 get_key(view->keymap, REQ_PROMPT));
2910 break;
2911 }
2912 open_view(view, request, OPEN_DEFAULT);
2913 break;
2915 case REQ_VIEW_STAGE:
2916 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2917 report("No stage content, press %s to open the status view and choose file",
2918 get_key(view->keymap, REQ_VIEW_STATUS));
2919 break;
2920 }
2921 open_view(view, request, OPEN_DEFAULT);
2922 break;
2924 case REQ_VIEW_STATUS:
2925 if (opt_is_inside_work_tree == FALSE) {
2926 report("The status view requires a working tree");
2927 break;
2928 }
2929 open_view(view, request, OPEN_DEFAULT);
2930 break;
2932 case REQ_VIEW_MAIN:
2933 case REQ_VIEW_DIFF:
2934 case REQ_VIEW_LOG:
2935 case REQ_VIEW_TREE:
2936 case REQ_VIEW_HELP:
2937 case REQ_VIEW_BRANCH:
2938 open_view(view, request, OPEN_DEFAULT);
2939 break;
2941 case REQ_NEXT:
2942 case REQ_PREVIOUS:
2943 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2945 if (view->parent) {
2946 int line;
2948 view = view->parent;
2949 line = view->lineno;
2950 move_view(view, request);
2951 if (view_is_displayed(view))
2952 update_view_title(view);
2953 if (line != view->lineno)
2954 view_request(view, REQ_ENTER);
2955 } else {
2956 move_view(view, request);
2957 }
2958 break;
2960 case REQ_VIEW_NEXT:
2961 {
2962 int nviews = displayed_views();
2963 int next_view = (current_view + 1) % nviews;
2965 if (next_view == current_view) {
2966 report("Only one view is displayed");
2967 break;
2968 }
2970 current_view = next_view;
2971 /* Blur out the title of the previous view. */
2972 update_view_title(view);
2973 report("");
2974 break;
2975 }
2976 case REQ_REFRESH:
2977 report("Refreshing is not yet supported for the %s view", view->name);
2978 break;
2980 case REQ_MAXIMIZE:
2981 if (displayed_views() == 2)
2982 maximize_view(view);
2983 break;
2985 case REQ_OPTIONS:
2986 case REQ_TOGGLE_LINENO:
2987 case REQ_TOGGLE_DATE:
2988 case REQ_TOGGLE_AUTHOR:
2989 case REQ_TOGGLE_GRAPHIC:
2990 case REQ_TOGGLE_REV_GRAPH:
2991 case REQ_TOGGLE_REFS:
2992 toggle_option(request);
2993 break;
2995 case REQ_TOGGLE_SORT_FIELD:
2996 case REQ_TOGGLE_SORT_ORDER:
2997 report("Sorting is not yet supported for the %s view", view->name);
2998 break;
3000 case REQ_SEARCH:
3001 case REQ_SEARCH_BACK:
3002 search_view(view, request);
3003 break;
3005 case REQ_FIND_NEXT:
3006 case REQ_FIND_PREV:
3007 find_next(view, request);
3008 break;
3010 case REQ_STOP_LOADING:
3011 foreach_view(view, i) {
3012 if (view->pipe)
3013 report("Stopped loading the %s view", view->name),
3014 end_update(view, TRUE);
3015 }
3016 break;
3018 case REQ_SHOW_VERSION:
3019 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3020 return TRUE;
3022 case REQ_SCREEN_REDRAW:
3023 redraw_display(TRUE);
3024 break;
3026 case REQ_EDIT:
3027 report("Nothing to edit");
3028 break;
3030 case REQ_ENTER:
3031 report("Nothing to enter");
3032 break;
3034 case REQ_VIEW_CLOSE:
3035 /* XXX: Mark closed views by letting view->prev point to the
3036 * view itself. Parents to closed view should never be
3037 * followed. */
3038 if (view->prev && view->prev != view) {
3039 maximize_view(view->prev);
3040 view->prev = view;
3041 break;
3042 }
3043 /* Fall-through */
3044 case REQ_QUIT:
3045 return FALSE;
3047 default:
3048 report("Unknown key, press %s for help",
3049 get_key(view->keymap, REQ_VIEW_HELP));
3050 return TRUE;
3051 }
3053 return TRUE;
3054 }
3057 /*
3058 * View backend utilities
3059 */
3061 enum sort_field {
3062 ORDERBY_NAME,
3063 ORDERBY_DATE,
3064 ORDERBY_AUTHOR,
3065 };
3067 struct sort_state {
3068 const enum sort_field *fields;
3069 size_t size, current;
3070 bool reverse;
3071 };
3073 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3074 #define get_sort_field(state) ((state).fields[(state).current])
3075 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3077 static void
3078 sort_view(struct view *view, enum request request, struct sort_state *state,
3079 int (*compare)(const void *, const void *))
3080 {
3081 switch (request) {
3082 case REQ_TOGGLE_SORT_FIELD:
3083 state->current = (state->current + 1) % state->size;
3084 break;
3086 case REQ_TOGGLE_SORT_ORDER:
3087 state->reverse = !state->reverse;
3088 break;
3089 default:
3090 die("Not a sort request");
3091 }
3093 qsort(view->line, view->lines, sizeof(*view->line), compare);
3094 redraw_view(view);
3095 }
3097 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3099 /* Small author cache to reduce memory consumption. It uses binary
3100 * search to lookup or find place to position new entries. No entries
3101 * are ever freed. */
3102 static const char *
3103 get_author(const char *name)
3104 {
3105 static const char **authors;
3106 static size_t authors_size;
3107 int from = 0, to = authors_size - 1;
3109 while (from <= to) {
3110 size_t pos = (to + from) / 2;
3111 int cmp = strcmp(name, authors[pos]);
3113 if (!cmp)
3114 return authors[pos];
3116 if (cmp < 0)
3117 to = pos - 1;
3118 else
3119 from = pos + 1;
3120 }
3122 if (!realloc_authors(&authors, authors_size, 1))
3123 return NULL;
3124 name = strdup(name);
3125 if (!name)
3126 return NULL;
3128 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3129 authors[from] = name;
3130 authors_size++;
3132 return name;
3133 }
3135 static void
3136 parse_timesec(struct time *time, const char *sec)
3137 {
3138 time->sec = (time_t) atol(sec);
3139 }
3141 static void
3142 parse_timezone(struct time *time, const char *zone)
3143 {
3144 long tz;
3146 tz = ('0' - zone[1]) * 60 * 60 * 10;
3147 tz += ('0' - zone[2]) * 60 * 60;
3148 tz += ('0' - zone[3]) * 60 * 10;
3149 tz += ('0' - zone[4]) * 60;
3151 if (zone[0] == '-')
3152 tz = -tz;
3154 time->tz = tz;
3155 time->sec -= tz;
3156 }
3158 /* Parse author lines where the name may be empty:
3159 * author <email@address.tld> 1138474660 +0100
3160 */
3161 static void
3162 parse_author_line(char *ident, const char **author, struct time *time)
3163 {
3164 char *nameend = strchr(ident, '<');
3165 char *emailend = strchr(ident, '>');
3167 if (nameend && emailend)
3168 *nameend = *emailend = 0;
3169 ident = chomp_string(ident);
3170 if (!*ident) {
3171 if (nameend)
3172 ident = chomp_string(nameend + 1);
3173 if (!*ident)
3174 ident = "Unknown";
3175 }
3177 *author = get_author(ident);
3179 /* Parse epoch and timezone */
3180 if (emailend && emailend[1] == ' ') {
3181 char *secs = emailend + 2;
3182 char *zone = strchr(secs, ' ');
3184 parse_timesec(time, secs);
3186 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3187 parse_timezone(time, zone + 1);
3188 }
3189 }
3191 /*
3192 * Pager backend
3193 */
3195 static bool
3196 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3197 {
3198 if (opt_line_number && draw_lineno(view, lineno))
3199 return TRUE;
3201 draw_text(view, line->type, line->data);
3202 return TRUE;
3203 }
3205 static bool
3206 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3207 {
3208 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3209 char ref[SIZEOF_STR];
3211 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3212 return TRUE;
3214 /* This is the only fatal call, since it can "corrupt" the buffer. */
3215 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3216 return FALSE;
3218 return TRUE;
3219 }
3221 static void
3222 add_pager_refs(struct view *view, struct line *line)
3223 {
3224 char buf[SIZEOF_STR];
3225 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3226 struct ref_list *list;
3227 size_t bufpos = 0, i;
3228 const char *sep = "Refs: ";
3229 bool is_tag = FALSE;
3231 assert(line->type == LINE_COMMIT);
3233 list = get_ref_list(commit_id);
3234 if (!list) {
3235 if (view->type == VIEW_DIFF)
3236 goto try_add_describe_ref;
3237 return;
3238 }
3240 for (i = 0; i < list->size; i++) {
3241 struct ref *ref = list->refs[i];
3242 const char *fmt = ref->tag ? "%s[%s]" :
3243 ref->remote ? "%s<%s>" : "%s%s";
3245 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3246 return;
3247 sep = ", ";
3248 if (ref->tag)
3249 is_tag = TRUE;
3250 }
3252 if (!is_tag && view->type == VIEW_DIFF) {
3253 try_add_describe_ref:
3254 /* Add <tag>-g<commit_id> "fake" reference. */
3255 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3256 return;
3257 }
3259 if (bufpos == 0)
3260 return;
3262 add_line_text(view, buf, LINE_PP_REFS);
3263 }
3265 static bool
3266 pager_read(struct view *view, char *data)
3267 {
3268 struct line *line;
3270 if (!data)
3271 return TRUE;
3273 line = add_line_text(view, data, get_line_type(data));
3274 if (!line)
3275 return FALSE;
3277 if (line->type == LINE_COMMIT &&
3278 (view->type == VIEW_DIFF ||
3279 view->type == VIEW_LOG))
3280 add_pager_refs(view, line);
3282 return TRUE;
3283 }
3285 static enum request
3286 pager_request(struct view *view, enum request request, struct line *line)
3287 {
3288 int split = 0;
3290 if (request != REQ_ENTER)
3291 return request;
3293 if (line->type == LINE_COMMIT &&
3294 (view->type == VIEW_LOG ||
3295 view->type == VIEW_PAGER)) {
3296 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3297 split = 1;
3298 }
3300 /* Always scroll the view even if it was split. That way
3301 * you can use Enter to scroll through the log view and
3302 * split open each commit diff. */
3303 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3305 /* FIXME: A minor workaround. Scrolling the view will call report("")
3306 * but if we are scrolling a non-current view this won't properly
3307 * update the view title. */
3308 if (split)
3309 update_view_title(view);
3311 return REQ_NONE;
3312 }
3314 static bool
3315 pager_grep(struct view *view, struct line *line)
3316 {
3317 const char *text[] = { line->data, NULL };
3319 return grep_text(view, text);
3320 }
3322 static void
3323 pager_select(struct view *view, struct line *line)
3324 {
3325 if (line->type == LINE_COMMIT) {
3326 char *text = (char *)line->data + STRING_SIZE("commit ");
3328 if (view->type != VIEW_PAGER)
3329 string_copy_rev(view->ref, text);
3330 string_copy_rev(ref_commit, text);
3331 }
3332 }
3334 static struct view_ops pager_ops = {
3335 "line",
3336 NULL,
3337 NULL,
3338 pager_read,
3339 pager_draw,
3340 pager_request,
3341 pager_grep,
3342 pager_select,
3343 };
3345 static const char *log_argv[SIZEOF_ARG] = {
3346 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3347 };
3349 static enum request
3350 log_request(struct view *view, enum request request, struct line *line)
3351 {
3352 switch (request) {
3353 case REQ_REFRESH:
3354 load_refs();
3355 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3356 return REQ_NONE;
3357 default:
3358 return pager_request(view, request, line);
3359 }
3360 }
3362 static struct view_ops log_ops = {
3363 "line",
3364 log_argv,
3365 NULL,
3366 pager_read,
3367 pager_draw,
3368 log_request,
3369 pager_grep,
3370 pager_select,
3371 };
3373 static const char *diff_argv[SIZEOF_ARG] = {
3374 "git", "show", "--pretty=fuller", "--no-color", "--root",
3375 "--patch-with-stat", "--find-copies-harder", "-C",
3376 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3377 };
3379 static bool
3380 diff_read(struct view *view, char *data)
3381 {
3382 if (!data) {
3383 /* Fall back to retry if no diff will be shown. */
3384 if (view->lines == 0 && opt_file_argv) {
3385 int pos = argv_size(view->argv)
3386 - argv_size(opt_file_argv) - 1;
3388 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3389 for (; view->argv[pos]; pos++) {
3390 free((void *) view->argv[pos]);
3391 view->argv[pos] = NULL;
3392 }
3394 if (view->pipe)
3395 io_done(view->pipe);
3396 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3397 return FALSE;
3398 }
3399 }
3400 return TRUE;
3401 }
3403 return pager_read(view, data);
3404 }
3406 static struct view_ops diff_ops = {
3407 "line",
3408 diff_argv,
3409 NULL,
3410 diff_read,
3411 pager_draw,
3412 pager_request,
3413 pager_grep,
3414 pager_select,
3415 };
3417 /*
3418 * Help backend
3419 */
3421 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
3423 static bool
3424 help_open_keymap_title(struct view *view, enum keymap keymap)
3425 {
3426 struct line *line;
3428 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3429 help_keymap_hidden[keymap] ? '+' : '-',
3430 enum_name(keymap_table[keymap]));
3431 if (line)
3432 line->other = keymap;
3434 return help_keymap_hidden[keymap];
3435 }
3437 static void
3438 help_open_keymap(struct view *view, enum keymap keymap)
3439 {
3440 const char *group = NULL;
3441 char buf[SIZEOF_STR];
3442 size_t bufpos;
3443 bool add_title = TRUE;
3444 int i;
3446 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3447 const char *key = NULL;
3449 if (req_info[i].request == REQ_NONE)
3450 continue;
3452 if (!req_info[i].request) {
3453 group = req_info[i].help;
3454 continue;
3455 }
3457 key = get_keys(keymap, req_info[i].request, TRUE);
3458 if (!key || !*key)
3459 continue;
3461 if (add_title && help_open_keymap_title(view, keymap))
3462 return;
3463 add_title = FALSE;
3465 if (group) {
3466 add_line_text(view, group, LINE_HELP_GROUP);
3467 group = NULL;
3468 }
3470 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3471 enum_name(req_info[i]), req_info[i].help);
3472 }
3474 group = "External commands:";
3476 for (i = 0; i < run_requests; i++) {
3477 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3478 const char *key;
3479 int argc;
3481 if (!req || req->keymap != keymap)
3482 continue;
3484 key = get_key_name(req->key);
3485 if (!*key)
3486 key = "(no key defined)";
3488 if (add_title && help_open_keymap_title(view, keymap))
3489 return;
3490 if (group) {
3491 add_line_text(view, group, LINE_HELP_GROUP);
3492 group = NULL;
3493 }
3495 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3496 if (!string_format_from(buf, &bufpos, "%s%s",
3497 argc ? " " : "", req->argv[argc]))
3498 return;
3500 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3501 }
3502 }
3504 static bool
3505 help_open(struct view *view, enum open_flags flags)
3506 {
3507 enum keymap keymap;
3509 reset_view(view);
3510 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3511 add_line_text(view, "", LINE_DEFAULT);
3513 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
3514 help_open_keymap(view, keymap);
3516 return TRUE;
3517 }
3519 static enum request
3520 help_request(struct view *view, enum request request, struct line *line)
3521 {
3522 switch (request) {
3523 case REQ_ENTER:
3524 if (line->type == LINE_HELP_KEYMAP) {
3525 help_keymap_hidden[line->other] =
3526 !help_keymap_hidden[line->other];
3527 view->p_restore = TRUE;
3528 open_view(view, REQ_VIEW_HELP, OPEN_REFRESH);
3529 }
3531 return REQ_NONE;
3532 default:
3533 return pager_request(view, request, line);
3534 }
3535 }
3537 static struct view_ops help_ops = {
3538 "line",
3539 NULL,
3540 help_open,
3541 NULL,
3542 pager_draw,
3543 help_request,
3544 pager_grep,
3545 pager_select,
3546 };
3549 /*
3550 * Tree backend
3551 */
3553 struct tree_stack_entry {
3554 struct tree_stack_entry *prev; /* Entry below this in the stack */
3555 unsigned long lineno; /* Line number to restore */
3556 char *name; /* Position of name in opt_path */
3557 };
3559 /* The top of the path stack. */
3560 static struct tree_stack_entry *tree_stack = NULL;
3561 unsigned long tree_lineno = 0;
3563 static void
3564 pop_tree_stack_entry(void)
3565 {
3566 struct tree_stack_entry *entry = tree_stack;
3568 tree_lineno = entry->lineno;
3569 entry->name[0] = 0;
3570 tree_stack = entry->prev;
3571 free(entry);
3572 }
3574 static void
3575 push_tree_stack_entry(const char *name, unsigned long lineno)
3576 {
3577 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3578 size_t pathlen = strlen(opt_path);
3580 if (!entry)
3581 return;
3583 entry->prev = tree_stack;
3584 entry->name = opt_path + pathlen;
3585 tree_stack = entry;
3587 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3588 pop_tree_stack_entry();
3589 return;
3590 }
3592 /* Move the current line to the first tree entry. */
3593 tree_lineno = 1;
3594 entry->lineno = lineno;
3595 }
3597 /* Parse output from git-ls-tree(1):
3598 *
3599 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3600 */
3602 #define SIZEOF_TREE_ATTR \
3603 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3605 #define SIZEOF_TREE_MODE \
3606 STRING_SIZE("100644 ")
3608 #define TREE_ID_OFFSET \
3609 STRING_SIZE("100644 blob ")
3611 struct tree_entry {
3612 char id[SIZEOF_REV];
3613 mode_t mode;
3614 struct time time; /* Date from the author ident. */
3615 const char *author; /* Author of the commit. */
3616 char name[1];
3617 };
3619 static const char *
3620 tree_path(const struct line *line)
3621 {
3622 return ((struct tree_entry *) line->data)->name;
3623 }
3625 static int
3626 tree_compare_entry(const struct line *line1, const struct line *line2)
3627 {
3628 if (line1->type != line2->type)
3629 return line1->type == LINE_TREE_DIR ? -1 : 1;
3630 return strcmp(tree_path(line1), tree_path(line2));
3631 }
3633 static const enum sort_field tree_sort_fields[] = {
3634 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3635 };
3636 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3638 static int
3639 tree_compare(const void *l1, const void *l2)
3640 {
3641 const struct line *line1 = (const struct line *) l1;
3642 const struct line *line2 = (const struct line *) l2;
3643 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3644 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3646 if (line1->type == LINE_TREE_HEAD)
3647 return -1;
3648 if (line2->type == LINE_TREE_HEAD)
3649 return 1;
3651 switch (get_sort_field(tree_sort_state)) {
3652 case ORDERBY_DATE:
3653 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3655 case ORDERBY_AUTHOR:
3656 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3658 case ORDERBY_NAME:
3659 default:
3660 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3661 }
3662 }
3665 static struct line *
3666 tree_entry(struct view *view, enum line_type type, const char *path,
3667 const char *mode, const char *id)
3668 {
3669 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3670 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3672 if (!entry || !line) {
3673 free(entry);
3674 return NULL;
3675 }
3677 strncpy(entry->name, path, strlen(path));
3678 if (mode)
3679 entry->mode = strtoul(mode, NULL, 8);
3680 if (id)
3681 string_copy_rev(entry->id, id);
3683 return line;
3684 }
3686 static bool
3687 tree_read_date(struct view *view, char *text, bool *read_date)
3688 {
3689 static const char *author_name;
3690 static struct time author_time;
3692 if (!text && *read_date) {
3693 *read_date = FALSE;
3694 return TRUE;
3696 } else if (!text) {
3697 char *path = *opt_path ? opt_path : ".";
3698 /* Find next entry to process */
3699 const char *log_file[] = {
3700 "git", "log", "--no-color", "--pretty=raw",
3701 "--cc", "--raw", view->id, "--", path, NULL
3702 };
3704 if (!view->lines) {
3705 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3706 report("Tree is empty");
3707 return TRUE;
3708 }
3710 if (!start_update(view, log_file, opt_cdup)) {
3711 report("Failed to load tree data");
3712 return TRUE;
3713 }
3715 *read_date = TRUE;
3716 return FALSE;
3718 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3719 parse_author_line(text + STRING_SIZE("author "),
3720 &author_name, &author_time);
3722 } else if (*text == ':') {
3723 char *pos;
3724 size_t annotated = 1;
3725 size_t i;
3727 pos = strchr(text, '\t');
3728 if (!pos)
3729 return TRUE;
3730 text = pos + 1;
3731 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3732 text += strlen(opt_path);
3733 pos = strchr(text, '/');
3734 if (pos)
3735 *pos = 0;
3737 for (i = 1; i < view->lines; i++) {
3738 struct line *line = &view->line[i];
3739 struct tree_entry *entry = line->data;
3741 annotated += !!entry->author;
3742 if (entry->author || strcmp(entry->name, text))
3743 continue;
3745 entry->author = author_name;
3746 entry->time = author_time;
3747 line->dirty = 1;
3748 break;
3749 }
3751 if (annotated == view->lines)
3752 io_kill(view->pipe);
3753 }
3754 return TRUE;
3755 }
3757 static bool
3758 tree_read(struct view *view, char *text)
3759 {
3760 static bool read_date = FALSE;
3761 struct tree_entry *data;
3762 struct line *entry, *line;
3763 enum line_type type;
3764 size_t textlen = text ? strlen(text) : 0;
3765 char *path = text + SIZEOF_TREE_ATTR;
3767 if (read_date || !text)
3768 return tree_read_date(view, text, &read_date);
3770 if (textlen <= SIZEOF_TREE_ATTR)
3771 return FALSE;
3772 if (view->lines == 0 &&
3773 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3774 return FALSE;
3776 /* Strip the path part ... */
3777 if (*opt_path) {
3778 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3779 size_t striplen = strlen(opt_path);
3781 if (pathlen > striplen)
3782 memmove(path, path + striplen,
3783 pathlen - striplen + 1);
3785 /* Insert "link" to parent directory. */
3786 if (view->lines == 1 &&
3787 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3788 return FALSE;
3789 }
3791 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3792 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3793 if (!entry)
3794 return FALSE;
3795 data = entry->data;
3797 /* Skip "Directory ..." and ".." line. */
3798 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3799 if (tree_compare_entry(line, entry) <= 0)
3800 continue;
3802 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3804 line->data = data;
3805 line->type = type;
3806 for (; line <= entry; line++)
3807 line->dirty = line->cleareol = 1;
3808 return TRUE;
3809 }
3811 if (tree_lineno > view->lineno) {
3812 view->lineno = tree_lineno;
3813 tree_lineno = 0;
3814 }
3816 return TRUE;
3817 }
3819 static bool
3820 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3821 {
3822 struct tree_entry *entry = line->data;
3824 if (line->type == LINE_TREE_HEAD) {
3825 if (draw_text(view, line->type, "Directory path /"))
3826 return TRUE;
3827 } else {
3828 if (draw_mode(view, entry->mode))
3829 return TRUE;
3831 if (opt_author && draw_author(view, entry->author))
3832 return TRUE;
3834 if (opt_date && draw_date(view, &entry->time))
3835 return TRUE;
3836 }
3838 draw_text(view, line->type, entry->name);
3839 return TRUE;
3840 }
3842 static void
3843 open_blob_editor(const char *id)
3844 {
3845 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3846 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3847 int fd = mkstemp(file);
3849 if (fd == -1)
3850 report("Failed to create temporary file");
3851 else if (!io_run_append(blob_argv, fd))
3852 report("Failed to save blob data to file");
3853 else
3854 open_editor(file);
3855 if (fd != -1)
3856 unlink(file);
3857 }
3859 static enum request
3860 tree_request(struct view *view, enum request request, struct line *line)
3861 {
3862 enum open_flags flags;
3863 struct tree_entry *entry = line->data;
3865 switch (request) {
3866 case REQ_VIEW_BLAME:
3867 if (line->type != LINE_TREE_FILE) {
3868 report("Blame only supported for files");
3869 return REQ_NONE;
3870 }
3872 string_copy(opt_ref, view->vid);
3873 return request;
3875 case REQ_EDIT:
3876 if (line->type != LINE_TREE_FILE) {
3877 report("Edit only supported for files");
3878 } else if (!is_head_commit(view->vid)) {
3879 open_blob_editor(entry->id);
3880 } else {
3881 open_editor(opt_file);
3882 }
3883 return REQ_NONE;
3885 case REQ_TOGGLE_SORT_FIELD:
3886 case REQ_TOGGLE_SORT_ORDER:
3887 sort_view(view, request, &tree_sort_state, tree_compare);
3888 return REQ_NONE;
3890 case REQ_PARENT:
3891 if (!*opt_path) {
3892 /* quit view if at top of tree */
3893 return REQ_VIEW_CLOSE;
3894 }
3895 /* fake 'cd ..' */
3896 line = &view->line[1];
3897 break;
3899 case REQ_ENTER:
3900 break;
3902 default:
3903 return request;
3904 }
3906 /* Cleanup the stack if the tree view is at a different tree. */
3907 while (!*opt_path && tree_stack)
3908 pop_tree_stack_entry();
3910 switch (line->type) {
3911 case LINE_TREE_DIR:
3912 /* Depending on whether it is a subdirectory or parent link
3913 * mangle the path buffer. */
3914 if (line == &view->line[1] && *opt_path) {
3915 pop_tree_stack_entry();
3917 } else {
3918 const char *basename = tree_path(line);
3920 push_tree_stack_entry(basename, view->lineno);
3921 }
3923 /* Trees and subtrees share the same ID, so they are not not
3924 * unique like blobs. */
3925 flags = OPEN_RELOAD;
3926 request = REQ_VIEW_TREE;
3927 break;
3929 case LINE_TREE_FILE:
3930 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3931 request = REQ_VIEW_BLOB;
3932 break;
3934 default:
3935 return REQ_NONE;
3936 }
3938 open_view(view, request, flags);
3939 if (request == REQ_VIEW_TREE)
3940 view->lineno = tree_lineno;
3942 return REQ_NONE;
3943 }
3945 static bool
3946 tree_grep(struct view *view, struct line *line)
3947 {
3948 struct tree_entry *entry = line->data;
3949 const char *text[] = {
3950 entry->name,
3951 opt_author ? entry->author : "",
3952 mkdate(&entry->time, opt_date),
3953 NULL
3954 };
3956 return grep_text(view, text);
3957 }
3959 static void
3960 tree_select(struct view *view, struct line *line)
3961 {
3962 struct tree_entry *entry = line->data;
3964 if (line->type == LINE_TREE_FILE) {
3965 string_copy_rev(ref_blob, entry->id);
3966 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3968 } else if (line->type != LINE_TREE_DIR) {
3969 return;
3970 }
3972 string_copy_rev(view->ref, entry->id);
3973 }
3975 static bool
3976 tree_prepare(struct view *view)
3977 {
3978 if (view->lines == 0 && opt_prefix[0]) {
3979 char *pos = opt_prefix;
3981 while (pos && *pos) {
3982 char *end = strchr(pos, '/');
3984 if (end)
3985 *end = 0;
3986 push_tree_stack_entry(pos, 0);
3987 pos = end;
3988 if (end) {
3989 *end = '/';
3990 pos++;
3991 }
3992 }
3994 } else if (strcmp(view->vid, view->id)) {
3995 opt_path[0] = 0;
3996 }
3998 return prepare_io(view, opt_cdup, view->ops->argv, TRUE);
3999 }
4001 static const char *tree_argv[SIZEOF_ARG] = {
4002 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4003 };
4005 static struct view_ops tree_ops = {
4006 "file",
4007 tree_argv,
4008 NULL,
4009 tree_read,
4010 tree_draw,
4011 tree_request,
4012 tree_grep,
4013 tree_select,
4014 tree_prepare,
4015 };
4017 static bool
4018 blob_read(struct view *view, char *line)
4019 {
4020 if (!line)
4021 return TRUE;
4022 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4023 }
4025 static enum request
4026 blob_request(struct view *view, enum request request, struct line *line)
4027 {
4028 switch (request) {
4029 case REQ_EDIT:
4030 open_blob_editor(view->vid);
4031 return REQ_NONE;
4032 default:
4033 return pager_request(view, request, line);
4034 }
4035 }
4037 static const char *blob_argv[SIZEOF_ARG] = {
4038 "git", "cat-file", "blob", "%(blob)", NULL
4039 };
4041 static struct view_ops blob_ops = {
4042 "line",
4043 blob_argv,
4044 NULL,
4045 blob_read,
4046 pager_draw,
4047 blob_request,
4048 pager_grep,
4049 pager_select,
4050 };
4052 /*
4053 * Blame backend
4054 *
4055 * Loading the blame view is a two phase job:
4056 *
4057 * 1. File content is read either using opt_file from the
4058 * filesystem or using git-cat-file.
4059 * 2. Then blame information is incrementally added by
4060 * reading output from git-blame.
4061 */
4063 struct blame_commit {
4064 char id[SIZEOF_REV]; /* SHA1 ID. */
4065 char title[128]; /* First line of the commit message. */
4066 const char *author; /* Author of the commit. */
4067 struct time time; /* Date from the author ident. */
4068 char filename[128]; /* Name of file. */
4069 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4070 char parent_filename[128]; /* Parent/previous name of file. */
4071 };
4073 struct blame {
4074 struct blame_commit *commit;
4075 unsigned long lineno;
4076 char text[1];
4077 };
4079 static bool
4080 blame_open(struct view *view, enum open_flags flags)
4081 {
4082 char path[SIZEOF_STR];
4083 size_t i;
4085 if (!view->prev && *opt_prefix) {
4086 string_copy(path, opt_file);
4087 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4088 return FALSE;
4089 }
4091 if (*opt_ref || !io_open(&view->io, "%s%s", opt_cdup, opt_file)) {
4092 const char *blame_cat_file_argv[] = {
4093 "git", "cat-file", "blob", path, NULL
4094 };
4096 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4097 !start_update(view, blame_cat_file_argv, opt_cdup))
4098 return FALSE;
4099 }
4101 /* First pass: remove multiple references to the same commit. */
4102 for (i = 0; i < view->lines; i++) {
4103 struct blame *blame = view->line[i].data;
4105 if (blame->commit && blame->commit->id[0])
4106 blame->commit->id[0] = 0;
4107 else
4108 blame->commit = NULL;
4109 }
4111 /* Second pass: free existing references. */
4112 for (i = 0; i < view->lines; i++) {
4113 struct blame *blame = view->line[i].data;
4115 if (blame->commit)
4116 free(blame->commit);
4117 }
4119 setup_update(view, opt_file);
4120 string_format(view->ref, "%s ...", opt_file);
4122 return TRUE;
4123 }
4125 static struct blame_commit *
4126 get_blame_commit(struct view *view, const char *id)
4127 {
4128 size_t i;
4130 for (i = 0; i < view->lines; i++) {
4131 struct blame *blame = view->line[i].data;
4133 if (!blame->commit)
4134 continue;
4136 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4137 return blame->commit;
4138 }
4140 {
4141 struct blame_commit *commit = calloc(1, sizeof(*commit));
4143 if (commit)
4144 string_ncopy(commit->id, id, SIZEOF_REV);
4145 return commit;
4146 }
4147 }
4149 static bool
4150 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4151 {
4152 const char *pos = *posref;
4154 *posref = NULL;
4155 pos = strchr(pos + 1, ' ');
4156 if (!pos || !isdigit(pos[1]))
4157 return FALSE;
4158 *number = atoi(pos + 1);
4159 if (*number < min || *number > max)
4160 return FALSE;
4162 *posref = pos;
4163 return TRUE;
4164 }
4166 static struct blame_commit *
4167 parse_blame_commit(struct view *view, const char *text, int *blamed)
4168 {
4169 struct blame_commit *commit;
4170 struct blame *blame;
4171 const char *pos = text + SIZEOF_REV - 2;
4172 size_t orig_lineno = 0;
4173 size_t lineno;
4174 size_t group;
4176 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4177 return NULL;
4179 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4180 !parse_number(&pos, &lineno, 1, view->lines) ||
4181 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4182 return NULL;
4184 commit = get_blame_commit(view, text);
4185 if (!commit)
4186 return NULL;
4188 *blamed += group;
4189 while (group--) {
4190 struct line *line = &view->line[lineno + group - 1];
4192 blame = line->data;
4193 blame->commit = commit;
4194 blame->lineno = orig_lineno + group - 1;
4195 line->dirty = 1;
4196 }
4198 return commit;
4199 }
4201 static bool
4202 blame_read_file(struct view *view, const char *line, bool *read_file)
4203 {
4204 if (!line) {
4205 const char *blame_argv[] = {
4206 "git", "blame", "%(blameargs)", "--incremental",
4207 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4208 };
4210 if (view->lines == 0 && !view->prev)
4211 die("No blame exist for %s", view->vid);
4213 if (view->lines == 0 || !start_update(view, blame_argv, opt_cdup)) {
4214 report("Failed to load blame data");
4215 return TRUE;
4216 }
4218 *read_file = FALSE;
4219 return FALSE;
4221 } else {
4222 size_t linelen = strlen(line);
4223 struct blame *blame = malloc(sizeof(*blame) + linelen);
4225 if (!blame)
4226 return FALSE;
4228 blame->commit = NULL;
4229 strncpy(blame->text, line, linelen);
4230 blame->text[linelen] = 0;
4231 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4232 }
4233 }
4235 static bool
4236 match_blame_header(const char *name, char **line)
4237 {
4238 size_t namelen = strlen(name);
4239 bool matched = !strncmp(name, *line, namelen);
4241 if (matched)
4242 *line += namelen;
4244 return matched;
4245 }
4247 static bool
4248 blame_read(struct view *view, char *line)
4249 {
4250 static struct blame_commit *commit = NULL;
4251 static int blamed = 0;
4252 static bool read_file = TRUE;
4254 if (read_file)
4255 return blame_read_file(view, line, &read_file);
4257 if (!line) {
4258 /* Reset all! */
4259 commit = NULL;
4260 blamed = 0;
4261 read_file = TRUE;
4262 string_format(view->ref, "%s", view->vid);
4263 if (view_is_displayed(view)) {
4264 update_view_title(view);
4265 redraw_view_from(view, 0);
4266 }
4267 return TRUE;
4268 }
4270 if (!commit) {
4271 commit = parse_blame_commit(view, line, &blamed);
4272 string_format(view->ref, "%s %2d%%", view->vid,
4273 view->lines ? blamed * 100 / view->lines : 0);
4275 } else if (match_blame_header("author ", &line)) {
4276 commit->author = get_author(line);
4278 } else if (match_blame_header("author-time ", &line)) {
4279 parse_timesec(&commit->time, line);
4281 } else if (match_blame_header("author-tz ", &line)) {
4282 parse_timezone(&commit->time, line);
4284 } else if (match_blame_header("summary ", &line)) {
4285 string_ncopy(commit->title, line, strlen(line));
4287 } else if (match_blame_header("previous ", &line)) {
4288 if (strlen(line) <= SIZEOF_REV)
4289 return FALSE;
4290 string_copy_rev(commit->parent_id, line);
4291 line += SIZEOF_REV;
4292 string_ncopy(commit->parent_filename, line, strlen(line));
4294 } else if (match_blame_header("filename ", &line)) {
4295 string_ncopy(commit->filename, line, strlen(line));
4296 commit = NULL;
4297 }
4299 return TRUE;
4300 }
4302 static bool
4303 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4304 {
4305 struct blame *blame = line->data;
4306 struct time *time = NULL;
4307 const char *id = NULL, *author = NULL;
4309 if (blame->commit && *blame->commit->filename) {
4310 id = blame->commit->id;
4311 author = blame->commit->author;
4312 time = &blame->commit->time;
4313 }
4315 if (opt_date && draw_date(view, time))
4316 return TRUE;
4318 if (opt_author && draw_author(view, author))
4319 return TRUE;
4321 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4322 return TRUE;
4324 if (draw_lineno(view, lineno))
4325 return TRUE;
4327 draw_text(view, LINE_DEFAULT, blame->text);
4328 return TRUE;
4329 }
4331 static bool
4332 check_blame_commit(struct blame *blame, bool check_null_id)
4333 {
4334 if (!blame->commit)
4335 report("Commit data not loaded yet");
4336 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4337 report("No commit exist for the selected line");
4338 else
4339 return TRUE;
4340 return FALSE;
4341 }
4343 static void
4344 setup_blame_parent_line(struct view *view, struct blame *blame)
4345 {
4346 char from[SIZEOF_REF + SIZEOF_STR];
4347 char to[SIZEOF_REF + SIZEOF_STR];
4348 const char *diff_tree_argv[] = {
4349 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4350 "-U0", from, to, "--", NULL
4351 };
4352 struct io io;
4353 int parent_lineno = -1;
4354 int blamed_lineno = -1;
4355 char *line;
4357 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4358 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4359 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4360 return;
4362 while ((line = io_get(&io, '\n', TRUE))) {
4363 if (*line == '@') {
4364 char *pos = strchr(line, '+');
4366 parent_lineno = atoi(line + 4);
4367 if (pos)
4368 blamed_lineno = atoi(pos + 1);
4370 } else if (*line == '+' && parent_lineno != -1) {
4371 if (blame->lineno == blamed_lineno - 1 &&
4372 !strcmp(blame->text, line + 1)) {
4373 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4374 break;
4375 }
4376 blamed_lineno++;
4377 }
4378 }
4380 io_done(&io);
4381 }
4383 static enum request
4384 blame_request(struct view *view, enum request request, struct line *line)
4385 {
4386 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4387 struct blame *blame = line->data;
4389 switch (request) {
4390 case REQ_VIEW_BLAME:
4391 if (check_blame_commit(blame, TRUE)) {
4392 string_copy(opt_ref, blame->commit->id);
4393 string_copy(opt_file, blame->commit->filename);
4394 if (blame->lineno)
4395 view->lineno = blame->lineno;
4396 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4397 }
4398 break;
4400 case REQ_PARENT:
4401 if (!check_blame_commit(blame, TRUE))
4402 break;
4403 if (!*blame->commit->parent_id) {
4404 report("The selected commit has no parents");
4405 } else {
4406 string_copy_rev(opt_ref, blame->commit->parent_id);
4407 string_copy(opt_file, blame->commit->parent_filename);
4408 setup_blame_parent_line(view, blame);
4409 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4410 }
4411 break;
4413 case REQ_ENTER:
4414 if (!check_blame_commit(blame, FALSE))
4415 break;
4417 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4418 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4419 break;
4421 if (!strcmp(blame->commit->id, NULL_ID)) {
4422 struct view *diff = VIEW(REQ_VIEW_DIFF);
4423 const char *diff_index_argv[] = {
4424 "git", "diff-index", "--root", "--patch-with-stat",
4425 "-C", "-M", "HEAD", "--", view->vid, NULL
4426 };
4428 if (!*blame->commit->parent_id) {
4429 diff_index_argv[1] = "diff";
4430 diff_index_argv[2] = "--no-color";
4431 diff_index_argv[6] = "--";
4432 diff_index_argv[7] = "/dev/null";
4433 }
4435 if (!prepare_update(diff, diff_index_argv, NULL)) {
4436 report("Failed to allocate diff command");
4437 break;
4438 }
4439 flags |= OPEN_PREPARED;
4440 }
4442 open_view(view, REQ_VIEW_DIFF, flags);
4443 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4444 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4445 break;
4447 default:
4448 return request;
4449 }
4451 return REQ_NONE;
4452 }
4454 static bool
4455 blame_grep(struct view *view, struct line *line)
4456 {
4457 struct blame *blame = line->data;
4458 struct blame_commit *commit = blame->commit;
4459 const char *text[] = {
4460 blame->text,
4461 commit ? commit->title : "",
4462 commit ? commit->id : "",
4463 commit && opt_author ? commit->author : "",
4464 commit ? mkdate(&commit->time, opt_date) : "",
4465 NULL
4466 };
4468 return grep_text(view, text);
4469 }
4471 static void
4472 blame_select(struct view *view, struct line *line)
4473 {
4474 struct blame *blame = line->data;
4475 struct blame_commit *commit = blame->commit;
4477 if (!commit)
4478 return;
4480 if (!strcmp(commit->id, NULL_ID))
4481 string_ncopy(ref_commit, "HEAD", 4);
4482 else
4483 string_copy_rev(ref_commit, commit->id);
4484 }
4486 static struct view_ops blame_ops = {
4487 "line",
4488 NULL,
4489 blame_open,
4490 blame_read,
4491 blame_draw,
4492 blame_request,
4493 blame_grep,
4494 blame_select,
4495 };
4497 /*
4498 * Branch backend
4499 */
4501 struct branch {
4502 const char *author; /* Author of the last commit. */
4503 struct time time; /* Date of the last activity. */
4504 const struct ref *ref; /* Name and commit ID information. */
4505 };
4507 static const struct ref branch_all;
4509 static const enum sort_field branch_sort_fields[] = {
4510 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4511 };
4512 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4514 static int
4515 branch_compare(const void *l1, const void *l2)
4516 {
4517 const struct branch *branch1 = ((const struct line *) l1)->data;
4518 const struct branch *branch2 = ((const struct line *) l2)->data;
4520 switch (get_sort_field(branch_sort_state)) {
4521 case ORDERBY_DATE:
4522 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4524 case ORDERBY_AUTHOR:
4525 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4527 case ORDERBY_NAME:
4528 default:
4529 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4530 }
4531 }
4533 static bool
4534 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4535 {
4536 struct branch *branch = line->data;
4537 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4539 if (opt_date && draw_date(view, &branch->time))
4540 return TRUE;
4542 if (opt_author && draw_author(view, branch->author))
4543 return TRUE;
4545 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4546 return TRUE;
4547 }
4549 static enum request
4550 branch_request(struct view *view, enum request request, struct line *line)
4551 {
4552 struct branch *branch = line->data;
4554 switch (request) {
4555 case REQ_REFRESH:
4556 load_refs();
4557 open_view(view, REQ_VIEW_BRANCH, OPEN_REFRESH);
4558 return REQ_NONE;
4560 case REQ_TOGGLE_SORT_FIELD:
4561 case REQ_TOGGLE_SORT_ORDER:
4562 sort_view(view, request, &branch_sort_state, branch_compare);
4563 return REQ_NONE;
4565 case REQ_ENTER:
4566 {
4567 const struct ref *ref = branch->ref;
4568 const char *all_branches_argv[] = {
4569 "git", "log", "--no-color", "--pretty=raw", "--parents",
4570 "--topo-order",
4571 ref == &branch_all ? "--all" : ref->name, NULL
4572 };
4573 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4575 if (!prepare_update(main_view, all_branches_argv, NULL))
4576 report("Failed to load view of all branches");
4577 else
4578 open_view(view, REQ_VIEW_MAIN, OPEN_PREPARED | OPEN_SPLIT);
4579 return REQ_NONE;
4580 }
4581 default:
4582 return request;
4583 }
4584 }
4586 static bool
4587 branch_read(struct view *view, char *line)
4588 {
4589 static char id[SIZEOF_REV];
4590 struct branch *reference;
4591 size_t i;
4593 if (!line)
4594 return TRUE;
4596 switch (get_line_type(line)) {
4597 case LINE_COMMIT:
4598 string_copy_rev(id, line + STRING_SIZE("commit "));
4599 return TRUE;
4601 case LINE_AUTHOR:
4602 for (i = 0, reference = NULL; i < view->lines; i++) {
4603 struct branch *branch = view->line[i].data;
4605 if (strcmp(branch->ref->id, id))
4606 continue;
4608 view->line[i].dirty = TRUE;
4609 if (reference) {
4610 branch->author = reference->author;
4611 branch->time = reference->time;
4612 continue;
4613 }
4615 parse_author_line(line + STRING_SIZE("author "),
4616 &branch->author, &branch->time);
4617 reference = branch;
4618 }
4619 return TRUE;
4621 default:
4622 return TRUE;
4623 }
4625 }
4627 static bool
4628 branch_open_visitor(void *data, const struct ref *ref)
4629 {
4630 struct view *view = data;
4631 struct branch *branch;
4633 if (ref->tag || ref->ltag || ref->remote)
4634 return TRUE;
4636 branch = calloc(1, sizeof(*branch));
4637 if (!branch)
4638 return FALSE;
4640 branch->ref = ref;
4641 return !!add_line_data(view, branch, LINE_DEFAULT);
4642 }
4644 static bool
4645 branch_open(struct view *view, enum open_flags flags)
4646 {
4647 const char *branch_log[] = {
4648 "git", "log", "--no-color", "--pretty=raw",
4649 "--simplify-by-decoration", "--all", NULL
4650 };
4652 if (!start_update(view, branch_log, NULL)) {
4653 report("Failed to load branch data");
4654 return TRUE;
4655 }
4657 setup_update(view, view->id);
4658 branch_open_visitor(view, &branch_all);
4659 foreach_ref(branch_open_visitor, view);
4660 view->p_restore = TRUE;
4662 return TRUE;
4663 }
4665 static bool
4666 branch_grep(struct view *view, struct line *line)
4667 {
4668 struct branch *branch = line->data;
4669 const char *text[] = {
4670 branch->ref->name,
4671 branch->author,
4672 NULL
4673 };
4675 return grep_text(view, text);
4676 }
4678 static void
4679 branch_select(struct view *view, struct line *line)
4680 {
4681 struct branch *branch = line->data;
4683 string_copy_rev(view->ref, branch->ref->id);
4684 string_copy_rev(ref_commit, branch->ref->id);
4685 string_copy_rev(ref_head, branch->ref->id);
4686 string_copy_rev(ref_branch, branch->ref->name);
4687 }
4689 static struct view_ops branch_ops = {
4690 "branch",
4691 NULL,
4692 branch_open,
4693 branch_read,
4694 branch_draw,
4695 branch_request,
4696 branch_grep,
4697 branch_select,
4698 };
4700 /*
4701 * Status backend
4702 */
4704 struct status {
4705 char status;
4706 struct {
4707 mode_t mode;
4708 char rev[SIZEOF_REV];
4709 char name[SIZEOF_STR];
4710 } old;
4711 struct {
4712 mode_t mode;
4713 char rev[SIZEOF_REV];
4714 char name[SIZEOF_STR];
4715 } new;
4716 };
4718 static char status_onbranch[SIZEOF_STR];
4719 static struct status stage_status;
4720 static enum line_type stage_line_type;
4721 static size_t stage_chunks;
4722 static int *stage_chunk;
4724 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4726 /* This should work even for the "On branch" line. */
4727 static inline bool
4728 status_has_none(struct view *view, struct line *line)
4729 {
4730 return line < view->line + view->lines && !line[1].data;
4731 }
4733 /* Get fields from the diff line:
4734 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4735 */
4736 static inline bool
4737 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4738 {
4739 const char *old_mode = buf + 1;
4740 const char *new_mode = buf + 8;
4741 const char *old_rev = buf + 15;
4742 const char *new_rev = buf + 56;
4743 const char *status = buf + 97;
4745 if (bufsize < 98 ||
4746 old_mode[-1] != ':' ||
4747 new_mode[-1] != ' ' ||
4748 old_rev[-1] != ' ' ||
4749 new_rev[-1] != ' ' ||
4750 status[-1] != ' ')
4751 return FALSE;
4753 file->status = *status;
4755 string_copy_rev(file->old.rev, old_rev);
4756 string_copy_rev(file->new.rev, new_rev);
4758 file->old.mode = strtoul(old_mode, NULL, 8);
4759 file->new.mode = strtoul(new_mode, NULL, 8);
4761 file->old.name[0] = file->new.name[0] = 0;
4763 return TRUE;
4764 }
4766 static bool
4767 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4768 {
4769 struct status *unmerged = NULL;
4770 char *buf;
4771 struct io io;
4773 if (!io_run(&io, IO_RD, opt_cdup, argv))
4774 return FALSE;
4776 add_line_data(view, NULL, type);
4778 while ((buf = io_get(&io, 0, TRUE))) {
4779 struct status *file = unmerged;
4781 if (!file) {
4782 file = calloc(1, sizeof(*file));
4783 if (!file || !add_line_data(view, file, type))
4784 goto error_out;
4785 }
4787 /* Parse diff info part. */
4788 if (status) {
4789 file->status = status;
4790 if (status == 'A')
4791 string_copy(file->old.rev, NULL_ID);
4793 } else if (!file->status || file == unmerged) {
4794 if (!status_get_diff(file, buf, strlen(buf)))
4795 goto error_out;
4797 buf = io_get(&io, 0, TRUE);
4798 if (!buf)
4799 break;
4801 /* Collapse all modified entries that follow an
4802 * associated unmerged entry. */
4803 if (unmerged == file) {
4804 unmerged->status = 'U';
4805 unmerged = NULL;
4806 } else if (file->status == 'U') {
4807 unmerged = file;
4808 }
4809 }
4811 /* Grab the old name for rename/copy. */
4812 if (!*file->old.name &&
4813 (file->status == 'R' || file->status == 'C')) {
4814 string_ncopy(file->old.name, buf, strlen(buf));
4816 buf = io_get(&io, 0, TRUE);
4817 if (!buf)
4818 break;
4819 }
4821 /* git-ls-files just delivers a NUL separated list of
4822 * file names similar to the second half of the
4823 * git-diff-* output. */
4824 string_ncopy(file->new.name, buf, strlen(buf));
4825 if (!*file->old.name)
4826 string_copy(file->old.name, file->new.name);
4827 file = NULL;
4828 }
4830 if (io_error(&io)) {
4831 error_out:
4832 io_done(&io);
4833 return FALSE;
4834 }
4836 if (!view->line[view->lines - 1].data)
4837 add_line_data(view, NULL, LINE_STAT_NONE);
4839 io_done(&io);
4840 return TRUE;
4841 }
4843 /* Don't show unmerged entries in the staged section. */
4844 static const char *status_diff_index_argv[] = {
4845 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4846 "--cached", "-M", "HEAD", NULL
4847 };
4849 static const char *status_diff_files_argv[] = {
4850 "git", "diff-files", "-z", NULL
4851 };
4853 static const char *status_list_other_argv[] = {
4854 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4855 };
4857 static const char *status_list_no_head_argv[] = {
4858 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4859 };
4861 static const char *update_index_argv[] = {
4862 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4863 };
4865 /* Restore the previous line number to stay in the context or select a
4866 * line with something that can be updated. */
4867 static void
4868 status_restore(struct view *view)
4869 {
4870 if (view->p_lineno >= view->lines)
4871 view->p_lineno = view->lines - 1;
4872 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4873 view->p_lineno++;
4874 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4875 view->p_lineno--;
4877 /* If the above fails, always skip the "On branch" line. */
4878 if (view->p_lineno < view->lines)
4879 view->lineno = view->p_lineno;
4880 else
4881 view->lineno = 1;
4883 if (view->lineno < view->offset)
4884 view->offset = view->lineno;
4885 else if (view->offset + view->height <= view->lineno)
4886 view->offset = view->lineno - view->height + 1;
4888 view->p_restore = FALSE;
4889 }
4891 static void
4892 status_update_onbranch(void)
4893 {
4894 static const char *paths[][2] = {
4895 { "rebase-apply/rebasing", "Rebasing" },
4896 { "rebase-apply/applying", "Applying mailbox" },
4897 { "rebase-apply/", "Rebasing mailbox" },
4898 { "rebase-merge/interactive", "Interactive rebase" },
4899 { "rebase-merge/", "Rebase merge" },
4900 { "MERGE_HEAD", "Merging" },
4901 { "BISECT_LOG", "Bisecting" },
4902 { "HEAD", "On branch" },
4903 };
4904 char buf[SIZEOF_STR];
4905 struct stat stat;
4906 int i;
4908 if (is_initial_commit()) {
4909 string_copy(status_onbranch, "Initial commit");
4910 return;
4911 }
4913 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4914 char *head = opt_head;
4916 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4917 lstat(buf, &stat) < 0)
4918 continue;
4920 if (!*opt_head) {
4921 struct io io;
4923 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4924 io_read_buf(&io, buf, sizeof(buf))) {
4925 head = buf;
4926 if (!prefixcmp(head, "refs/heads/"))
4927 head += STRING_SIZE("refs/heads/");
4928 }
4929 }
4931 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4932 string_copy(status_onbranch, opt_head);
4933 return;
4934 }
4936 string_copy(status_onbranch, "Not currently on any branch");
4937 }
4939 /* First parse staged info using git-diff-index(1), then parse unstaged
4940 * info using git-diff-files(1), and finally untracked files using
4941 * git-ls-files(1). */
4942 static bool
4943 status_open(struct view *view, enum open_flags flags)
4944 {
4945 reset_view(view);
4947 add_line_data(view, NULL, LINE_STAT_HEAD);
4948 status_update_onbranch();
4950 io_run_bg(update_index_argv);
4952 if (is_initial_commit()) {
4953 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4954 return FALSE;
4955 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4956 return FALSE;
4957 }
4959 if (!opt_untracked_dirs_content)
4960 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
4962 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4963 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4964 return FALSE;
4966 /* Restore the exact position or use the specialized restore
4967 * mode? */
4968 if (!view->p_restore)
4969 status_restore(view);
4970 return TRUE;
4971 }
4973 static bool
4974 status_draw(struct view *view, struct line *line, unsigned int lineno)
4975 {
4976 struct status *status = line->data;
4977 enum line_type type;
4978 const char *text;
4980 if (!status) {
4981 switch (line->type) {
4982 case LINE_STAT_STAGED:
4983 type = LINE_STAT_SECTION;
4984 text = "Changes to be committed:";
4985 break;
4987 case LINE_STAT_UNSTAGED:
4988 type = LINE_STAT_SECTION;
4989 text = "Changed but not updated:";
4990 break;
4992 case LINE_STAT_UNTRACKED:
4993 type = LINE_STAT_SECTION;
4994 text = "Untracked files:";
4995 break;
4997 case LINE_STAT_NONE:
4998 type = LINE_DEFAULT;
4999 text = " (no files)";
5000 break;
5002 case LINE_STAT_HEAD:
5003 type = LINE_STAT_HEAD;
5004 text = status_onbranch;
5005 break;
5007 default:
5008 return FALSE;
5009 }
5010 } else {
5011 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5013 buf[0] = status->status;
5014 if (draw_text(view, line->type, buf))
5015 return TRUE;
5016 type = LINE_DEFAULT;
5017 text = status->new.name;
5018 }
5020 draw_text(view, type, text);
5021 return TRUE;
5022 }
5024 static enum request
5025 status_load_error(struct view *view, struct view *stage, const char *path)
5026 {
5027 if (displayed_views() == 2 || display[current_view] != view)
5028 maximize_view(view);
5029 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
5030 return REQ_NONE;
5031 }
5033 static enum request
5034 status_enter(struct view *view, struct line *line)
5035 {
5036 struct status *status = line->data;
5037 const char *oldpath = status ? status->old.name : NULL;
5038 /* Diffs for unmerged entries are empty when passing the new
5039 * path, so leave it empty. */
5040 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5041 const char *info;
5042 enum open_flags split;
5043 struct view *stage = VIEW(REQ_VIEW_STAGE);
5045 if (line->type == LINE_STAT_NONE ||
5046 (!status && line[1].type == LINE_STAT_NONE)) {
5047 report("No file to diff");
5048 return REQ_NONE;
5049 }
5051 switch (line->type) {
5052 case LINE_STAT_STAGED:
5053 if (is_initial_commit()) {
5054 const char *no_head_diff_argv[] = {
5055 "git", "diff", "--no-color", "--patch-with-stat",
5056 "--", "/dev/null", newpath, NULL
5057 };
5059 if (!prepare_update(stage, no_head_diff_argv, opt_cdup))
5060 return status_load_error(view, stage, newpath);
5061 } else {
5062 const char *index_show_argv[] = {
5063 "git", "diff-index", "--root", "--patch-with-stat",
5064 "-C", "-M", "--cached", "HEAD", "--",
5065 oldpath, newpath, NULL
5066 };
5068 if (!prepare_update(stage, index_show_argv, opt_cdup))
5069 return status_load_error(view, stage, newpath);
5070 }
5072 if (status)
5073 info = "Staged changes to %s";
5074 else
5075 info = "Staged changes";
5076 break;
5078 case LINE_STAT_UNSTAGED:
5079 {
5080 const char *files_show_argv[] = {
5081 "git", "diff-files", "--root", "--patch-with-stat",
5082 "-C", "-M", "--", oldpath, newpath, NULL
5083 };
5085 if (!prepare_update(stage, files_show_argv, opt_cdup))
5086 return status_load_error(view, stage, newpath);
5087 if (status)
5088 info = "Unstaged changes to %s";
5089 else
5090 info = "Unstaged changes";
5091 break;
5092 }
5093 case LINE_STAT_UNTRACKED:
5094 if (!newpath) {
5095 report("No file to show");
5096 return REQ_NONE;
5097 }
5099 if (!suffixcmp(status->new.name, -1, "/")) {
5100 report("Cannot display a directory");
5101 return REQ_NONE;
5102 }
5104 if (!prepare_update_file(stage, newpath))
5105 return status_load_error(view, stage, newpath);
5106 info = "Untracked file %s";
5107 break;
5109 case LINE_STAT_HEAD:
5110 return REQ_NONE;
5112 default:
5113 die("line type %d not handled in switch", line->type);
5114 }
5116 split = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5117 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5118 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5119 if (status) {
5120 stage_status = *status;
5121 } else {
5122 memset(&stage_status, 0, sizeof(stage_status));
5123 }
5125 stage_line_type = line->type;
5126 stage_chunks = 0;
5127 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5128 }
5130 return REQ_NONE;
5131 }
5133 static bool
5134 status_exists(struct status *status, enum line_type type)
5135 {
5136 struct view *view = VIEW(REQ_VIEW_STATUS);
5137 unsigned long lineno;
5139 for (lineno = 0; lineno < view->lines; lineno++) {
5140 struct line *line = &view->line[lineno];
5141 struct status *pos = line->data;
5143 if (line->type != type)
5144 continue;
5145 if (!pos && (!status || !status->status) && line[1].data) {
5146 select_view_line(view, lineno);
5147 return TRUE;
5148 }
5149 if (pos && !strcmp(status->new.name, pos->new.name)) {
5150 select_view_line(view, lineno);
5151 return TRUE;
5152 }
5153 }
5155 return FALSE;
5156 }
5159 static bool
5160 status_update_prepare(struct io *io, enum line_type type)
5161 {
5162 const char *staged_argv[] = {
5163 "git", "update-index", "-z", "--index-info", NULL
5164 };
5165 const char *others_argv[] = {
5166 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5167 };
5169 switch (type) {
5170 case LINE_STAT_STAGED:
5171 return io_run(io, IO_WR, opt_cdup, staged_argv);
5173 case LINE_STAT_UNSTAGED:
5174 case LINE_STAT_UNTRACKED:
5175 return io_run(io, IO_WR, opt_cdup, others_argv);
5177 default:
5178 die("line type %d not handled in switch", type);
5179 return FALSE;
5180 }
5181 }
5183 static bool
5184 status_update_write(struct io *io, struct status *status, enum line_type type)
5185 {
5186 char buf[SIZEOF_STR];
5187 size_t bufsize = 0;
5189 switch (type) {
5190 case LINE_STAT_STAGED:
5191 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5192 status->old.mode,
5193 status->old.rev,
5194 status->old.name, 0))
5195 return FALSE;
5196 break;
5198 case LINE_STAT_UNSTAGED:
5199 case LINE_STAT_UNTRACKED:
5200 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5201 return FALSE;
5202 break;
5204 default:
5205 die("line type %d not handled in switch", type);
5206 }
5208 return io_write(io, buf, bufsize);
5209 }
5211 static bool
5212 status_update_file(struct status *status, enum line_type type)
5213 {
5214 struct io io;
5215 bool result;
5217 if (!status_update_prepare(&io, type))
5218 return FALSE;
5220 result = status_update_write(&io, status, type);
5221 return io_done(&io) && result;
5222 }
5224 static bool
5225 status_update_files(struct view *view, struct line *line)
5226 {
5227 char buf[sizeof(view->ref)];
5228 struct io io;
5229 bool result = TRUE;
5230 struct line *pos = view->line + view->lines;
5231 int files = 0;
5232 int file, done;
5233 int cursor_y = -1, cursor_x = -1;
5235 if (!status_update_prepare(&io, line->type))
5236 return FALSE;
5238 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5239 files++;
5241 string_copy(buf, view->ref);
5242 getsyx(cursor_y, cursor_x);
5243 for (file = 0, done = 5; result && file < files; line++, file++) {
5244 int almost_done = file * 100 / files;
5246 if (almost_done > done) {
5247 done = almost_done;
5248 string_format(view->ref, "updating file %u of %u (%d%% done)",
5249 file, files, done);
5250 update_view_title(view);
5251 setsyx(cursor_y, cursor_x);
5252 doupdate();
5253 }
5254 result = status_update_write(&io, line->data, line->type);
5255 }
5256 string_copy(view->ref, buf);
5258 return io_done(&io) && result;
5259 }
5261 static bool
5262 status_update(struct view *view)
5263 {
5264 struct line *line = &view->line[view->lineno];
5266 assert(view->lines);
5268 if (!line->data) {
5269 /* This should work even for the "On branch" line. */
5270 if (line < view->line + view->lines && !line[1].data) {
5271 report("Nothing to update");
5272 return FALSE;
5273 }
5275 if (!status_update_files(view, line + 1)) {
5276 report("Failed to update file status");
5277 return FALSE;
5278 }
5280 } else if (!status_update_file(line->data, line->type)) {
5281 report("Failed to update file status");
5282 return FALSE;
5283 }
5285 return TRUE;
5286 }
5288 static bool
5289 status_revert(struct status *status, enum line_type type, bool has_none)
5290 {
5291 if (!status || type != LINE_STAT_UNSTAGED) {
5292 if (type == LINE_STAT_STAGED) {
5293 report("Cannot revert changes to staged files");
5294 } else if (type == LINE_STAT_UNTRACKED) {
5295 report("Cannot revert changes to untracked files");
5296 } else if (has_none) {
5297 report("Nothing to revert");
5298 } else {
5299 report("Cannot revert changes to multiple files");
5300 }
5302 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5303 char mode[10] = "100644";
5304 const char *reset_argv[] = {
5305 "git", "update-index", "--cacheinfo", mode,
5306 status->old.rev, status->old.name, NULL
5307 };
5308 const char *checkout_argv[] = {
5309 "git", "checkout", "--", status->old.name, NULL
5310 };
5312 if (status->status == 'U') {
5313 string_format(mode, "%5o", status->old.mode);
5315 if (status->old.mode == 0 && status->new.mode == 0) {
5316 reset_argv[2] = "--force-remove";
5317 reset_argv[3] = status->old.name;
5318 reset_argv[4] = NULL;
5319 }
5321 if (!io_run_fg(reset_argv, opt_cdup))
5322 return FALSE;
5323 if (status->old.mode == 0 && status->new.mode == 0)
5324 return TRUE;
5325 }
5327 return io_run_fg(checkout_argv, opt_cdup);
5328 }
5330 return FALSE;
5331 }
5333 static enum request
5334 status_request(struct view *view, enum request request, struct line *line)
5335 {
5336 struct status *status = line->data;
5338 switch (request) {
5339 case REQ_STATUS_UPDATE:
5340 if (!status_update(view))
5341 return REQ_NONE;
5342 break;
5344 case REQ_STATUS_REVERT:
5345 if (!status_revert(status, line->type, status_has_none(view, line)))
5346 return REQ_NONE;
5347 break;
5349 case REQ_STATUS_MERGE:
5350 if (!status || status->status != 'U') {
5351 report("Merging only possible for files with unmerged status ('U').");
5352 return REQ_NONE;
5353 }
5354 open_mergetool(status->new.name);
5355 break;
5357 case REQ_EDIT:
5358 if (!status)
5359 return request;
5360 if (status->status == 'D') {
5361 report("File has been deleted.");
5362 return REQ_NONE;
5363 }
5365 open_editor(status->new.name);
5366 break;
5368 case REQ_VIEW_BLAME:
5369 if (status)
5370 opt_ref[0] = 0;
5371 return request;
5373 case REQ_ENTER:
5374 /* After returning the status view has been split to
5375 * show the stage view. No further reloading is
5376 * necessary. */
5377 return status_enter(view, line);
5379 case REQ_REFRESH:
5380 /* Simply reload the view. */
5381 break;
5383 default:
5384 return request;
5385 }
5387 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
5389 return REQ_NONE;
5390 }
5392 static void
5393 status_select(struct view *view, struct line *line)
5394 {
5395 struct status *status = line->data;
5396 char file[SIZEOF_STR] = "all files";
5397 const char *text;
5398 const char *key;
5400 if (status && !string_format(file, "'%s'", status->new.name))
5401 return;
5403 if (!status && line[1].type == LINE_STAT_NONE)
5404 line++;
5406 switch (line->type) {
5407 case LINE_STAT_STAGED:
5408 text = "Press %s to unstage %s for commit";
5409 break;
5411 case LINE_STAT_UNSTAGED:
5412 text = "Press %s to stage %s for commit";
5413 break;
5415 case LINE_STAT_UNTRACKED:
5416 text = "Press %s to stage %s for addition";
5417 break;
5419 case LINE_STAT_HEAD:
5420 case LINE_STAT_NONE:
5421 text = "Nothing to update";
5422 break;
5424 default:
5425 die("line type %d not handled in switch", line->type);
5426 }
5428 if (status && status->status == 'U') {
5429 text = "Press %s to resolve conflict in %s";
5430 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5432 } else {
5433 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5434 }
5436 string_format(view->ref, text, key, file);
5437 if (status)
5438 string_copy(opt_file, status->new.name);
5439 }
5441 static bool
5442 status_grep(struct view *view, struct line *line)
5443 {
5444 struct status *status = line->data;
5446 if (status) {
5447 const char buf[2] = { status->status, 0 };
5448 const char *text[] = { status->new.name, buf, NULL };
5450 return grep_text(view, text);
5451 }
5453 return FALSE;
5454 }
5456 static struct view_ops status_ops = {
5457 "file",
5458 NULL,
5459 status_open,
5460 NULL,
5461 status_draw,
5462 status_request,
5463 status_grep,
5464 status_select,
5465 };
5468 static bool
5469 stage_diff_write(struct io *io, struct line *line, struct line *end)
5470 {
5471 while (line < end) {
5472 if (!io_write(io, line->data, strlen(line->data)) ||
5473 !io_write(io, "\n", 1))
5474 return FALSE;
5475 line++;
5476 if (line->type == LINE_DIFF_CHUNK ||
5477 line->type == LINE_DIFF_HEADER)
5478 break;
5479 }
5481 return TRUE;
5482 }
5484 static struct line *
5485 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5486 {
5487 for (; view->line < line; line--)
5488 if (line->type == type)
5489 return line;
5491 return NULL;
5492 }
5494 static bool
5495 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5496 {
5497 const char *apply_argv[SIZEOF_ARG] = {
5498 "git", "apply", "--whitespace=nowarn", NULL
5499 };
5500 struct line *diff_hdr;
5501 struct io io;
5502 int argc = 3;
5504 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5505 if (!diff_hdr)
5506 return FALSE;
5508 if (!revert)
5509 apply_argv[argc++] = "--cached";
5510 if (revert || stage_line_type == LINE_STAT_STAGED)
5511 apply_argv[argc++] = "-R";
5512 apply_argv[argc++] = "-";
5513 apply_argv[argc++] = NULL;
5514 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5515 return FALSE;
5517 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5518 !stage_diff_write(&io, chunk, view->line + view->lines))
5519 chunk = NULL;
5521 io_done(&io);
5522 io_run_bg(update_index_argv);
5524 return chunk ? TRUE : FALSE;
5525 }
5527 static bool
5528 stage_update(struct view *view, struct line *line)
5529 {
5530 struct line *chunk = NULL;
5532 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5533 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5535 if (chunk) {
5536 if (!stage_apply_chunk(view, chunk, FALSE)) {
5537 report("Failed to apply chunk");
5538 return FALSE;
5539 }
5541 } else if (!stage_status.status) {
5542 view = VIEW(REQ_VIEW_STATUS);
5544 for (line = view->line; line < view->line + view->lines; line++)
5545 if (line->type == stage_line_type)
5546 break;
5548 if (!status_update_files(view, line + 1)) {
5549 report("Failed to update files");
5550 return FALSE;
5551 }
5553 } else if (!status_update_file(&stage_status, stage_line_type)) {
5554 report("Failed to update file");
5555 return FALSE;
5556 }
5558 return TRUE;
5559 }
5561 static bool
5562 stage_revert(struct view *view, struct line *line)
5563 {
5564 struct line *chunk = NULL;
5566 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5567 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5569 if (chunk) {
5570 if (!prompt_yesno("Are you sure you want to revert changes?"))
5571 return FALSE;
5573 if (!stage_apply_chunk(view, chunk, TRUE)) {
5574 report("Failed to revert chunk");
5575 return FALSE;
5576 }
5577 return TRUE;
5579 } else {
5580 return status_revert(stage_status.status ? &stage_status : NULL,
5581 stage_line_type, FALSE);
5582 }
5583 }
5586 static void
5587 stage_next(struct view *view, struct line *line)
5588 {
5589 int i;
5591 if (!stage_chunks) {
5592 for (line = view->line; line < view->line + view->lines; line++) {
5593 if (line->type != LINE_DIFF_CHUNK)
5594 continue;
5596 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5597 report("Allocation failure");
5598 return;
5599 }
5601 stage_chunk[stage_chunks++] = line - view->line;
5602 }
5603 }
5605 for (i = 0; i < stage_chunks; i++) {
5606 if (stage_chunk[i] > view->lineno) {
5607 do_scroll_view(view, stage_chunk[i] - view->lineno);
5608 report("Chunk %d of %d", i + 1, stage_chunks);
5609 return;
5610 }
5611 }
5613 report("No next chunk found");
5614 }
5616 static enum request
5617 stage_request(struct view *view, enum request request, struct line *line)
5618 {
5619 switch (request) {
5620 case REQ_STATUS_UPDATE:
5621 if (!stage_update(view, line))
5622 return REQ_NONE;
5623 break;
5625 case REQ_STATUS_REVERT:
5626 if (!stage_revert(view, line))
5627 return REQ_NONE;
5628 break;
5630 case REQ_STAGE_NEXT:
5631 if (stage_line_type == LINE_STAT_UNTRACKED) {
5632 report("File is untracked; press %s to add",
5633 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5634 return REQ_NONE;
5635 }
5636 stage_next(view, line);
5637 return REQ_NONE;
5639 case REQ_EDIT:
5640 if (!stage_status.new.name[0])
5641 return request;
5642 if (stage_status.status == 'D') {
5643 report("File has been deleted.");
5644 return REQ_NONE;
5645 }
5647 open_editor(stage_status.new.name);
5648 break;
5650 case REQ_REFRESH:
5651 /* Reload everything ... */
5652 break;
5654 case REQ_VIEW_BLAME:
5655 if (stage_status.new.name[0]) {
5656 string_copy(opt_file, stage_status.new.name);
5657 opt_ref[0] = 0;
5658 }
5659 return request;
5661 case REQ_ENTER:
5662 return pager_request(view, request, line);
5664 default:
5665 return request;
5666 }
5668 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5669 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
5671 /* Check whether the staged entry still exists, and close the
5672 * stage view if it doesn't. */
5673 if (!status_exists(&stage_status, stage_line_type)) {
5674 status_restore(VIEW(REQ_VIEW_STATUS));
5675 return REQ_VIEW_CLOSE;
5676 }
5678 if (stage_line_type == LINE_STAT_UNTRACKED) {
5679 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5680 report("Cannot display a directory");
5681 return REQ_NONE;
5682 }
5684 if (!prepare_update_file(view, stage_status.new.name)) {
5685 report("Failed to open file: %s", strerror(errno));
5686 return REQ_NONE;
5687 }
5688 }
5689 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5691 return REQ_NONE;
5692 }
5694 static struct view_ops stage_ops = {
5695 "line",
5696 NULL,
5697 NULL,
5698 pager_read,
5699 pager_draw,
5700 stage_request,
5701 pager_grep,
5702 pager_select,
5703 };
5706 /*
5707 * Revision graph
5708 */
5710 static const enum line_type graph_colors[] = {
5711 LINE_GRAPH_LINE_0,
5712 LINE_GRAPH_LINE_1,
5713 LINE_GRAPH_LINE_2,
5714 LINE_GRAPH_LINE_3,
5715 LINE_GRAPH_LINE_4,
5716 LINE_GRAPH_LINE_5,
5717 LINE_GRAPH_LINE_6,
5718 };
5720 static enum line_type get_graph_color(struct graph_symbol *symbol)
5721 {
5722 if (symbol->commit)
5723 return LINE_GRAPH_COMMIT;
5724 assert(symbol->color < ARRAY_SIZE(graph_colors));
5725 return graph_colors[symbol->color];
5726 }
5728 static bool
5729 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5730 {
5731 const char *chars = graph_symbol_to_utf8(symbol);
5733 return draw_text(view, color, chars + !!first);
5734 }
5736 static bool
5737 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5738 {
5739 const char *chars = graph_symbol_to_ascii(symbol);
5741 return draw_text(view, color, chars + !!first);
5742 }
5744 static bool
5745 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5746 {
5747 const chtype *chars = graph_symbol_to_chtype(symbol);
5749 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5750 }
5752 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5754 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5755 {
5756 static const draw_graph_fn fns[] = {
5757 draw_graph_ascii,
5758 draw_graph_chtype,
5759 draw_graph_utf8
5760 };
5761 draw_graph_fn fn = fns[opt_line_graphics];
5762 int i;
5764 for (i = 0; i < canvas->size; i++) {
5765 struct graph_symbol *symbol = &canvas->symbols[i];
5766 enum line_type color = get_graph_color(symbol);
5768 if (fn(view, symbol, color, i == 0))
5769 return TRUE;
5770 }
5772 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5773 }
5775 /*
5776 * Main view backend
5777 */
5779 struct commit {
5780 char id[SIZEOF_REV]; /* SHA1 ID. */
5781 char title[128]; /* First line of the commit message. */
5782 const char *author; /* Author of the commit. */
5783 struct time time; /* Date from the author ident. */
5784 struct ref_list *refs; /* Repository references. */
5785 struct graph_canvas graph; /* Ancestry chain graphics. */
5786 };
5788 static const char *main_argv[SIZEOF_ARG] = {
5789 "git", "log", "--no-color", "--pretty=raw", "--parents",
5790 "--topo-order", "%(diffargs)", "%(revargs)",
5791 "--", "%(fileargs)", NULL
5792 };
5794 static bool
5795 main_draw(struct view *view, struct line *line, unsigned int lineno)
5796 {
5797 struct commit *commit = line->data;
5799 if (!commit->author)
5800 return FALSE;
5802 if (opt_date && draw_date(view, &commit->time))
5803 return TRUE;
5805 if (opt_author && draw_author(view, commit->author))
5806 return TRUE;
5808 if (opt_rev_graph && draw_graph(view, &commit->graph))
5809 return TRUE;
5811 if (opt_show_refs && commit->refs) {
5812 size_t i;
5814 for (i = 0; i < commit->refs->size; i++) {
5815 struct ref *ref = commit->refs->refs[i];
5816 enum line_type type;
5818 if (ref->head)
5819 type = LINE_MAIN_HEAD;
5820 else if (ref->ltag)
5821 type = LINE_MAIN_LOCAL_TAG;
5822 else if (ref->tag)
5823 type = LINE_MAIN_TAG;
5824 else if (ref->tracked)
5825 type = LINE_MAIN_TRACKED;
5826 else if (ref->remote)
5827 type = LINE_MAIN_REMOTE;
5828 else
5829 type = LINE_MAIN_REF;
5831 if (draw_text(view, type, "[") ||
5832 draw_text(view, type, ref->name) ||
5833 draw_text(view, type, "]"))
5834 return TRUE;
5836 if (draw_text(view, LINE_DEFAULT, " "))
5837 return TRUE;
5838 }
5839 }
5841 draw_text(view, LINE_DEFAULT, commit->title);
5842 return TRUE;
5843 }
5845 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5846 static bool
5847 main_read(struct view *view, char *line)
5848 {
5849 static struct graph graph;
5850 enum line_type type;
5851 struct commit *commit;
5853 if (!line) {
5854 if (!view->lines && !view->prev)
5855 die("No revisions match the given arguments.");
5856 if (view->lines > 0) {
5857 commit = view->line[view->lines - 1].data;
5858 view->line[view->lines - 1].dirty = 1;
5859 if (!commit->author) {
5860 view->lines--;
5861 free(commit);
5862 }
5863 }
5865 done_graph(&graph);
5866 return TRUE;
5867 }
5869 type = get_line_type(line);
5870 if (type == LINE_COMMIT) {
5871 bool is_boundary;
5873 commit = calloc(1, sizeof(struct commit));
5874 if (!commit)
5875 return FALSE;
5877 line += STRING_SIZE("commit ");
5878 is_boundary = *line == '-';
5879 if (is_boundary)
5880 line++;
5882 string_copy_rev(commit->id, line);
5883 commit->refs = get_ref_list(commit->id);
5884 add_line_data(view, commit, LINE_MAIN_COMMIT);
5885 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5886 return TRUE;
5887 }
5889 if (!view->lines)
5890 return TRUE;
5891 commit = view->line[view->lines - 1].data;
5893 switch (type) {
5894 case LINE_PARENT:
5895 if (!graph.has_parents)
5896 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5897 break;
5899 case LINE_AUTHOR:
5900 parse_author_line(line + STRING_SIZE("author "),
5901 &commit->author, &commit->time);
5902 graph_render_parents(&graph);
5903 break;
5905 default:
5906 /* Fill in the commit title if it has not already been set. */
5907 if (commit->title[0])
5908 break;
5910 /* Require titles to start with a non-space character at the
5911 * offset used by git log. */
5912 if (strncmp(line, " ", 4))
5913 break;
5914 line += 4;
5915 /* Well, if the title starts with a whitespace character,
5916 * try to be forgiving. Otherwise we end up with no title. */
5917 while (isspace(*line))
5918 line++;
5919 if (*line == '\0')
5920 break;
5921 /* FIXME: More graceful handling of titles; append "..." to
5922 * shortened titles, etc. */
5924 string_expand(commit->title, sizeof(commit->title), line, 1);
5925 view->line[view->lines - 1].dirty = 1;
5926 }
5928 return TRUE;
5929 }
5931 static enum request
5932 main_request(struct view *view, enum request request, struct line *line)
5933 {
5934 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5936 switch (request) {
5937 case REQ_ENTER:
5938 if (view_is_displayed(view) && display[0] != view)
5939 maximize_view(view);
5940 open_view(view, REQ_VIEW_DIFF, flags);
5941 break;
5942 case REQ_REFRESH:
5943 load_refs();
5944 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5945 break;
5946 default:
5947 return request;
5948 }
5950 return REQ_NONE;
5951 }
5953 static bool
5954 grep_refs(struct ref_list *list, regex_t *regex)
5955 {
5956 regmatch_t pmatch;
5957 size_t i;
5959 if (!opt_show_refs || !list)
5960 return FALSE;
5962 for (i = 0; i < list->size; i++) {
5963 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5964 return TRUE;
5965 }
5967 return FALSE;
5968 }
5970 static bool
5971 main_grep(struct view *view, struct line *line)
5972 {
5973 struct commit *commit = line->data;
5974 const char *text[] = {
5975 commit->title,
5976 opt_author ? commit->author : "",
5977 mkdate(&commit->time, opt_date),
5978 NULL
5979 };
5981 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5982 }
5984 static void
5985 main_select(struct view *view, struct line *line)
5986 {
5987 struct commit *commit = line->data;
5989 string_copy_rev(view->ref, commit->id);
5990 string_copy_rev(ref_commit, view->ref);
5991 }
5993 static struct view_ops main_ops = {
5994 "commit",
5995 main_argv,
5996 NULL,
5997 main_read,
5998 main_draw,
5999 main_request,
6000 main_grep,
6001 main_select,
6002 };
6005 /*
6006 * Status management
6007 */
6009 /* Whether or not the curses interface has been initialized. */
6010 static bool cursed = FALSE;
6012 /* Terminal hacks and workarounds. */
6013 static bool use_scroll_redrawwin;
6014 static bool use_scroll_status_wclear;
6016 /* The status window is used for polling keystrokes. */
6017 static WINDOW *status_win;
6019 /* Reading from the prompt? */
6020 static bool input_mode = FALSE;
6022 static bool status_empty = FALSE;
6024 /* Update status and title window. */
6025 static void
6026 report(const char *msg, ...)
6027 {
6028 struct view *view = display[current_view];
6030 if (input_mode)
6031 return;
6033 if (!view) {
6034 char buf[SIZEOF_STR];
6035 va_list args;
6037 va_start(args, msg);
6038 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6039 buf[sizeof(buf) - 1] = 0;
6040 buf[sizeof(buf) - 2] = '.';
6041 buf[sizeof(buf) - 3] = '.';
6042 buf[sizeof(buf) - 4] = '.';
6043 }
6044 va_end(args);
6045 die("%s", buf);
6046 }
6048 if (!status_empty || *msg) {
6049 va_list args;
6051 va_start(args, msg);
6053 wmove(status_win, 0, 0);
6054 if (view->has_scrolled && use_scroll_status_wclear)
6055 wclear(status_win);
6056 if (*msg) {
6057 vwprintw(status_win, msg, args);
6058 status_empty = FALSE;
6059 } else {
6060 status_empty = TRUE;
6061 }
6062 wclrtoeol(status_win);
6063 wnoutrefresh(status_win);
6065 va_end(args);
6066 }
6068 update_view_title(view);
6069 }
6071 static void
6072 init_display(void)
6073 {
6074 const char *term;
6075 int x, y;
6077 /* Initialize the curses library */
6078 if (isatty(STDIN_FILENO)) {
6079 cursed = !!initscr();
6080 opt_tty = stdin;
6081 } else {
6082 /* Leave stdin and stdout alone when acting as a pager. */
6083 opt_tty = fopen("/dev/tty", "r+");
6084 if (!opt_tty)
6085 die("Failed to open /dev/tty");
6086 cursed = !!newterm(NULL, opt_tty, opt_tty);
6087 }
6089 if (!cursed)
6090 die("Failed to initialize curses");
6092 nonl(); /* Disable conversion and detect newlines from input. */
6093 cbreak(); /* Take input chars one at a time, no wait for \n */
6094 noecho(); /* Don't echo input */
6095 leaveok(stdscr, FALSE);
6097 if (has_colors())
6098 init_colors();
6100 getmaxyx(stdscr, y, x);
6101 status_win = newwin(1, x, y - 1, 0);
6102 if (!status_win)
6103 die("Failed to create status window");
6105 /* Enable keyboard mapping */
6106 keypad(status_win, TRUE);
6107 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6109 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6110 set_tabsize(opt_tab_size);
6111 #else
6112 TABSIZE = opt_tab_size;
6113 #endif
6115 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6116 if (term && !strcmp(term, "gnome-terminal")) {
6117 /* In the gnome-terminal-emulator, the message from
6118 * scrolling up one line when impossible followed by
6119 * scrolling down one line causes corruption of the
6120 * status line. This is fixed by calling wclear. */
6121 use_scroll_status_wclear = TRUE;
6122 use_scroll_redrawwin = FALSE;
6124 } else if (term && !strcmp(term, "xrvt-xpm")) {
6125 /* No problems with full optimizations in xrvt-(unicode)
6126 * and aterm. */
6127 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6129 } else {
6130 /* When scrolling in (u)xterm the last line in the
6131 * scrolling direction will update slowly. */
6132 use_scroll_redrawwin = TRUE;
6133 use_scroll_status_wclear = FALSE;
6134 }
6135 }
6137 static int
6138 get_input(int prompt_position)
6139 {
6140 struct view *view;
6141 int i, key, cursor_y, cursor_x;
6143 if (prompt_position)
6144 input_mode = TRUE;
6146 while (TRUE) {
6147 bool loading = FALSE;
6149 foreach_view (view, i) {
6150 update_view(view);
6151 if (view_is_displayed(view) && view->has_scrolled &&
6152 use_scroll_redrawwin)
6153 redrawwin(view->win);
6154 view->has_scrolled = FALSE;
6155 if (view->pipe)
6156 loading = TRUE;
6157 }
6159 /* Update the cursor position. */
6160 if (prompt_position) {
6161 getbegyx(status_win, cursor_y, cursor_x);
6162 cursor_x = prompt_position;
6163 } else {
6164 view = display[current_view];
6165 getbegyx(view->win, cursor_y, cursor_x);
6166 cursor_x = view->width - 1;
6167 cursor_y += view->lineno - view->offset;
6168 }
6169 setsyx(cursor_y, cursor_x);
6171 /* Refresh, accept single keystroke of input */
6172 doupdate();
6173 nodelay(status_win, loading);
6174 key = wgetch(status_win);
6176 /* wgetch() with nodelay() enabled returns ERR when
6177 * there's no input. */
6178 if (key == ERR) {
6180 } else if (key == KEY_RESIZE) {
6181 int height, width;
6183 getmaxyx(stdscr, height, width);
6185 wresize(status_win, 1, width);
6186 mvwin(status_win, height - 1, 0);
6187 wnoutrefresh(status_win);
6188 resize_display();
6189 redraw_display(TRUE);
6191 } else {
6192 input_mode = FALSE;
6193 return key;
6194 }
6195 }
6196 }
6198 static char *
6199 prompt_input(const char *prompt, input_handler handler, void *data)
6200 {
6201 enum input_status status = INPUT_OK;
6202 static char buf[SIZEOF_STR];
6203 size_t pos = 0;
6205 buf[pos] = 0;
6207 while (status == INPUT_OK || status == INPUT_SKIP) {
6208 int key;
6210 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6211 wclrtoeol(status_win);
6213 key = get_input(pos + 1);
6214 switch (key) {
6215 case KEY_RETURN:
6216 case KEY_ENTER:
6217 case '\n':
6218 status = pos ? INPUT_STOP : INPUT_CANCEL;
6219 break;
6221 case KEY_BACKSPACE:
6222 if (pos > 0)
6223 buf[--pos] = 0;
6224 else
6225 status = INPUT_CANCEL;
6226 break;
6228 case KEY_ESC:
6229 status = INPUT_CANCEL;
6230 break;
6232 default:
6233 if (pos >= sizeof(buf)) {
6234 report("Input string too long");
6235 return NULL;
6236 }
6238 status = handler(data, buf, key);
6239 if (status == INPUT_OK)
6240 buf[pos++] = (char) key;
6241 }
6242 }
6244 /* Clear the status window */
6245 status_empty = FALSE;
6246 report("");
6248 if (status == INPUT_CANCEL)
6249 return NULL;
6251 buf[pos++] = 0;
6253 return buf;
6254 }
6256 static enum input_status
6257 prompt_yesno_handler(void *data, char *buf, int c)
6258 {
6259 if (c == 'y' || c == 'Y')
6260 return INPUT_STOP;
6261 if (c == 'n' || c == 'N')
6262 return INPUT_CANCEL;
6263 return INPUT_SKIP;
6264 }
6266 static bool
6267 prompt_yesno(const char *prompt)
6268 {
6269 char prompt2[SIZEOF_STR];
6271 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6272 return FALSE;
6274 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6275 }
6277 static enum input_status
6278 read_prompt_handler(void *data, char *buf, int c)
6279 {
6280 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6281 }
6283 static char *
6284 read_prompt(const char *prompt)
6285 {
6286 return prompt_input(prompt, read_prompt_handler, NULL);
6287 }
6289 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6290 {
6291 enum input_status status = INPUT_OK;
6292 int size = 0;
6294 while (items[size].text)
6295 size++;
6297 while (status == INPUT_OK) {
6298 const struct menu_item *item = &items[*selected];
6299 int key;
6300 int i;
6302 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6303 prompt, *selected + 1, size);
6304 if (item->hotkey)
6305 wprintw(status_win, "[%c] ", (char) item->hotkey);
6306 wprintw(status_win, "%s", item->text);
6307 wclrtoeol(status_win);
6309 key = get_input(COLS - 1);
6310 switch (key) {
6311 case KEY_RETURN:
6312 case KEY_ENTER:
6313 case '\n':
6314 status = INPUT_STOP;
6315 break;
6317 case KEY_LEFT:
6318 case KEY_UP:
6319 *selected = *selected - 1;
6320 if (*selected < 0)
6321 *selected = size - 1;
6322 break;
6324 case KEY_RIGHT:
6325 case KEY_DOWN:
6326 *selected = (*selected + 1) % size;
6327 break;
6329 case KEY_ESC:
6330 status = INPUT_CANCEL;
6331 break;
6333 default:
6334 for (i = 0; items[i].text; i++)
6335 if (items[i].hotkey == key) {
6336 *selected = i;
6337 status = INPUT_STOP;
6338 break;
6339 }
6340 }
6341 }
6343 /* Clear the status window */
6344 status_empty = FALSE;
6345 report("");
6347 return status != INPUT_CANCEL;
6348 }
6350 /*
6351 * Repository properties
6352 */
6354 static struct ref **refs = NULL;
6355 static size_t refs_size = 0;
6356 static struct ref *refs_head = NULL;
6358 static struct ref_list **ref_lists = NULL;
6359 static size_t ref_lists_size = 0;
6361 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6362 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6363 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6365 static int
6366 compare_refs(const void *ref1_, const void *ref2_)
6367 {
6368 const struct ref *ref1 = *(const struct ref **)ref1_;
6369 const struct ref *ref2 = *(const struct ref **)ref2_;
6371 if (ref1->tag != ref2->tag)
6372 return ref2->tag - ref1->tag;
6373 if (ref1->ltag != ref2->ltag)
6374 return ref2->ltag - ref2->ltag;
6375 if (ref1->head != ref2->head)
6376 return ref2->head - ref1->head;
6377 if (ref1->tracked != ref2->tracked)
6378 return ref2->tracked - ref1->tracked;
6379 if (ref1->remote != ref2->remote)
6380 return ref2->remote - ref1->remote;
6381 return strcmp(ref1->name, ref2->name);
6382 }
6384 static void
6385 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6386 {
6387 size_t i;
6389 for (i = 0; i < refs_size; i++)
6390 if (!visitor(data, refs[i]))
6391 break;
6392 }
6394 static struct ref *
6395 get_ref_head()
6396 {
6397 return refs_head;
6398 }
6400 static struct ref_list *
6401 get_ref_list(const char *id)
6402 {
6403 struct ref_list *list;
6404 size_t i;
6406 for (i = 0; i < ref_lists_size; i++)
6407 if (!strcmp(id, ref_lists[i]->id))
6408 return ref_lists[i];
6410 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6411 return NULL;
6412 list = calloc(1, sizeof(*list));
6413 if (!list)
6414 return NULL;
6416 for (i = 0; i < refs_size; i++) {
6417 if (!strcmp(id, refs[i]->id) &&
6418 realloc_refs_list(&list->refs, list->size, 1))
6419 list->refs[list->size++] = refs[i];
6420 }
6422 if (!list->refs) {
6423 free(list);
6424 return NULL;
6425 }
6427 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6428 ref_lists[ref_lists_size++] = list;
6429 return list;
6430 }
6432 static int
6433 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6434 {
6435 struct ref *ref = NULL;
6436 bool tag = FALSE;
6437 bool ltag = FALSE;
6438 bool remote = FALSE;
6439 bool tracked = FALSE;
6440 bool head = FALSE;
6441 int from = 0, to = refs_size - 1;
6443 if (!prefixcmp(name, "refs/tags/")) {
6444 if (!suffixcmp(name, namelen, "^{}")) {
6445 namelen -= 3;
6446 name[namelen] = 0;
6447 } else {
6448 ltag = TRUE;
6449 }
6451 tag = TRUE;
6452 namelen -= STRING_SIZE("refs/tags/");
6453 name += STRING_SIZE("refs/tags/");
6455 } else if (!prefixcmp(name, "refs/remotes/")) {
6456 remote = TRUE;
6457 namelen -= STRING_SIZE("refs/remotes/");
6458 name += STRING_SIZE("refs/remotes/");
6459 tracked = !strcmp(opt_remote, name);
6461 } else if (!prefixcmp(name, "refs/heads/")) {
6462 namelen -= STRING_SIZE("refs/heads/");
6463 name += STRING_SIZE("refs/heads/");
6464 if (!strncmp(opt_head, name, namelen))
6465 return OK;
6467 } else if (!strcmp(name, "HEAD")) {
6468 head = TRUE;
6469 if (*opt_head) {
6470 namelen = strlen(opt_head);
6471 name = opt_head;
6472 }
6473 }
6475 /* If we are reloading or it's an annotated tag, replace the
6476 * previous SHA1 with the resolved commit id; relies on the fact
6477 * git-ls-remote lists the commit id of an annotated tag right
6478 * before the commit id it points to. */
6479 while (from <= to) {
6480 size_t pos = (to + from) / 2;
6481 int cmp = strcmp(name, refs[pos]->name);
6483 if (!cmp) {
6484 ref = refs[pos];
6485 break;
6486 }
6488 if (cmp < 0)
6489 to = pos - 1;
6490 else
6491 from = pos + 1;
6492 }
6494 if (!ref) {
6495 if (!realloc_refs(&refs, refs_size, 1))
6496 return ERR;
6497 ref = calloc(1, sizeof(*ref) + namelen);
6498 if (!ref)
6499 return ERR;
6500 memmove(refs + from + 1, refs + from,
6501 (refs_size - from) * sizeof(*refs));
6502 refs[from] = ref;
6503 strncpy(ref->name, name, namelen);
6504 refs_size++;
6505 }
6507 ref->head = head;
6508 ref->tag = tag;
6509 ref->ltag = ltag;
6510 ref->remote = remote;
6511 ref->tracked = tracked;
6512 string_copy_rev(ref->id, id);
6514 if (head)
6515 refs_head = ref;
6516 return OK;
6517 }
6519 static int
6520 load_refs(void)
6521 {
6522 const char *head_argv[] = {
6523 "git", "symbolic-ref", "HEAD", NULL
6524 };
6525 static const char *ls_remote_argv[SIZEOF_ARG] = {
6526 "git", "ls-remote", opt_git_dir, NULL
6527 };
6528 static bool init = FALSE;
6529 size_t i;
6531 if (!init) {
6532 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6533 die("TIG_LS_REMOTE contains too many arguments");
6534 init = TRUE;
6535 }
6537 if (!*opt_git_dir)
6538 return OK;
6540 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6541 !prefixcmp(opt_head, "refs/heads/")) {
6542 char *offset = opt_head + STRING_SIZE("refs/heads/");
6544 memmove(opt_head, offset, strlen(offset) + 1);
6545 }
6547 refs_head = NULL;
6548 for (i = 0; i < refs_size; i++)
6549 refs[i]->id[0] = 0;
6551 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6552 return ERR;
6554 /* Update the ref lists to reflect changes. */
6555 for (i = 0; i < ref_lists_size; i++) {
6556 struct ref_list *list = ref_lists[i];
6557 size_t old, new;
6559 for (old = new = 0; old < list->size; old++)
6560 if (!strcmp(list->id, list->refs[old]->id))
6561 list->refs[new++] = list->refs[old];
6562 list->size = new;
6563 }
6565 return OK;
6566 }
6568 static void
6569 set_remote_branch(const char *name, const char *value, size_t valuelen)
6570 {
6571 if (!strcmp(name, ".remote")) {
6572 string_ncopy(opt_remote, value, valuelen);
6574 } else if (*opt_remote && !strcmp(name, ".merge")) {
6575 size_t from = strlen(opt_remote);
6577 if (!prefixcmp(value, "refs/heads/"))
6578 value += STRING_SIZE("refs/heads/");
6580 if (!string_format_from(opt_remote, &from, "/%s", value))
6581 opt_remote[0] = 0;
6582 }
6583 }
6585 static void
6586 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6587 {
6588 const char *argv[SIZEOF_ARG] = { name, "=" };
6589 int argc = 1 + (cmd == option_set_command);
6590 enum option_code error;
6592 if (!argv_from_string(argv, &argc, value))
6593 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6594 else
6595 error = cmd(argc, argv);
6597 if (error != OPT_OK)
6598 warn("Option 'tig.%s': %s", name, option_errors[error]);
6599 }
6601 static bool
6602 set_environment_variable(const char *name, const char *value)
6603 {
6604 size_t len = strlen(name) + 1 + strlen(value) + 1;
6605 char *env = malloc(len);
6607 if (env &&
6608 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6609 putenv(env) == 0)
6610 return TRUE;
6611 free(env);
6612 return FALSE;
6613 }
6615 static void
6616 set_work_tree(const char *value)
6617 {
6618 char cwd[SIZEOF_STR];
6620 if (!getcwd(cwd, sizeof(cwd)))
6621 die("Failed to get cwd path: %s", strerror(errno));
6622 if (chdir(opt_git_dir) < 0)
6623 die("Failed to chdir(%s): %s", strerror(errno));
6624 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6625 die("Failed to get git path: %s", strerror(errno));
6626 if (chdir(cwd) < 0)
6627 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6628 if (chdir(value) < 0)
6629 die("Failed to chdir(%s): %s", value, strerror(errno));
6630 if (!getcwd(cwd, sizeof(cwd)))
6631 die("Failed to get cwd path: %s", strerror(errno));
6632 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6633 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6634 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6635 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6636 opt_is_inside_work_tree = TRUE;
6637 }
6639 static int
6640 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6641 {
6642 if (!strcmp(name, "i18n.commitencoding"))
6643 string_ncopy(opt_encoding, value, valuelen);
6645 else if (!strcmp(name, "core.editor"))
6646 string_ncopy(opt_editor, value, valuelen);
6648 else if (!strcmp(name, "core.worktree"))
6649 set_work_tree(value);
6651 else if (!prefixcmp(name, "tig.color."))
6652 set_repo_config_option(name + 10, value, option_color_command);
6654 else if (!prefixcmp(name, "tig.bind."))
6655 set_repo_config_option(name + 9, value, option_bind_command);
6657 else if (!prefixcmp(name, "tig."))
6658 set_repo_config_option(name + 4, value, option_set_command);
6660 else if (*opt_head && !prefixcmp(name, "branch.") &&
6661 !strncmp(name + 7, opt_head, strlen(opt_head)))
6662 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6664 return OK;
6665 }
6667 static int
6668 load_git_config(void)
6669 {
6670 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6672 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6673 }
6675 static int
6676 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6677 {
6678 if (!opt_git_dir[0]) {
6679 string_ncopy(opt_git_dir, name, namelen);
6681 } else if (opt_is_inside_work_tree == -1) {
6682 /* This can be 3 different values depending on the
6683 * version of git being used. If git-rev-parse does not
6684 * understand --is-inside-work-tree it will simply echo
6685 * the option else either "true" or "false" is printed.
6686 * Default to true for the unknown case. */
6687 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6689 } else if (*name == '.') {
6690 string_ncopy(opt_cdup, name, namelen);
6692 } else {
6693 string_ncopy(opt_prefix, name, namelen);
6694 }
6696 return OK;
6697 }
6699 static int
6700 load_repo_info(void)
6701 {
6702 const char *rev_parse_argv[] = {
6703 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6704 "--show-cdup", "--show-prefix", NULL
6705 };
6707 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6708 }
6711 /*
6712 * Main
6713 */
6715 static const char usage[] =
6716 "tig " TIG_VERSION " (" __DATE__ ")\n"
6717 "\n"
6718 "Usage: tig [options] [revs] [--] [paths]\n"
6719 " or: tig show [options] [revs] [--] [paths]\n"
6720 " or: tig blame [options] [rev] [--] path\n"
6721 " or: tig status\n"
6722 " or: tig < [git command output]\n"
6723 "\n"
6724 "Options:\n"
6725 " -v, --version Show version and exit\n"
6726 " -h, --help Show help message and exit";
6728 static void __NORETURN
6729 quit(int sig)
6730 {
6731 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6732 if (cursed)
6733 endwin();
6734 exit(0);
6735 }
6737 static void __NORETURN
6738 die(const char *err, ...)
6739 {
6740 va_list args;
6742 endwin();
6744 va_start(args, err);
6745 fputs("tig: ", stderr);
6746 vfprintf(stderr, err, args);
6747 fputs("\n", stderr);
6748 va_end(args);
6750 exit(1);
6751 }
6753 static void
6754 warn(const char *msg, ...)
6755 {
6756 va_list args;
6758 va_start(args, msg);
6759 fputs("tig warning: ", stderr);
6760 vfprintf(stderr, msg, args);
6761 fputs("\n", stderr);
6762 va_end(args);
6763 }
6765 static int
6766 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6767 {
6768 const char ***filter_args = data;
6770 return argv_append(filter_args, name) ? OK : ERR;
6771 }
6773 static void
6774 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6775 {
6776 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6777 const char **all_argv = NULL;
6779 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6780 !argv_append_array(&all_argv, argv) ||
6781 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6782 die("Failed to split arguments");
6783 argv_free(all_argv);
6784 free(all_argv);
6785 }
6787 static void
6788 filter_options(const char *argv[])
6789 {
6790 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6791 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6792 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6793 }
6795 static enum request
6796 parse_options(int argc, const char *argv[])
6797 {
6798 enum request request = REQ_VIEW_MAIN;
6799 const char *subcommand;
6800 bool seen_dashdash = FALSE;
6801 const char **filter_argv = NULL;
6802 int i;
6804 if (!isatty(STDIN_FILENO))
6805 return REQ_VIEW_PAGER;
6807 if (argc <= 1)
6808 return REQ_VIEW_MAIN;
6810 subcommand = argv[1];
6811 if (!strcmp(subcommand, "status")) {
6812 if (argc > 2)
6813 warn("ignoring arguments after `%s'", subcommand);
6814 return REQ_VIEW_STATUS;
6816 } else if (!strcmp(subcommand, "blame")) {
6817 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6818 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6819 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6821 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6822 die("invalid number of options to blame\n\n%s", usage);
6824 if (opt_rev_argv) {
6825 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6826 }
6828 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6829 return REQ_VIEW_BLAME;
6831 } else if (!strcmp(subcommand, "show")) {
6832 request = REQ_VIEW_DIFF;
6834 } else {
6835 subcommand = NULL;
6836 }
6838 for (i = 1 + !!subcommand; i < argc; i++) {
6839 const char *opt = argv[i];
6841 if (seen_dashdash) {
6842 argv_append(&opt_file_argv, opt);
6843 continue;
6845 } else if (!strcmp(opt, "--")) {
6846 seen_dashdash = TRUE;
6847 continue;
6849 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6850 printf("tig version %s\n", TIG_VERSION);
6851 quit(0);
6853 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6854 printf("%s\n", usage);
6855 quit(0);
6857 } else if (!strcmp(opt, "--all")) {
6858 argv_append(&opt_rev_argv, opt);
6859 continue;
6860 }
6862 if (!argv_append(&filter_argv, opt))
6863 die("command too long");
6864 }
6866 if (filter_argv)
6867 filter_options(filter_argv);
6869 return request;
6870 }
6872 int
6873 main(int argc, const char *argv[])
6874 {
6875 const char *codeset = "UTF-8";
6876 enum request request = parse_options(argc, argv);
6877 struct view *view;
6879 signal(SIGINT, quit);
6880 signal(SIGPIPE, SIG_IGN);
6882 if (setlocale(LC_ALL, "")) {
6883 codeset = nl_langinfo(CODESET);
6884 }
6886 if (load_repo_info() == ERR)
6887 die("Failed to load repo info.");
6889 if (load_options() == ERR)
6890 die("Failed to load user config.");
6892 if (load_git_config() == ERR)
6893 die("Failed to load repo config.");
6895 /* Require a git repository unless when running in pager mode. */
6896 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6897 die("Not a git repository");
6899 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6900 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6901 if (opt_iconv_in == ICONV_NONE)
6902 die("Failed to initialize character set conversion");
6903 }
6905 if (codeset && strcmp(codeset, "UTF-8")) {
6906 opt_iconv_out = iconv_open(codeset, "UTF-8");
6907 if (opt_iconv_out == ICONV_NONE)
6908 die("Failed to initialize character set conversion");
6909 }
6911 if (load_refs() == ERR)
6912 die("Failed to load refs.");
6914 init_display();
6916 while (view_driver(display[current_view], request)) {
6917 int key = get_input(0);
6919 view = display[current_view];
6920 request = get_keybinding(view->keymap, key);
6922 /* Some low-level request handling. This keeps access to
6923 * status_win restricted. */
6924 switch (request) {
6925 case REQ_NONE:
6926 report("Unknown key, press %s for help",
6927 get_key(view->keymap, REQ_VIEW_HELP));
6928 break;
6929 case REQ_PROMPT:
6930 {
6931 char *cmd = read_prompt(":");
6933 if (cmd && isdigit(*cmd)) {
6934 int lineno = view->lineno + 1;
6936 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6937 select_view_line(view, lineno - 1);
6938 report("");
6939 } else {
6940 report("Unable to parse '%s' as a line number", cmd);
6941 }
6943 } else if (cmd) {
6944 struct view *next = VIEW(REQ_VIEW_PAGER);
6945 const char *argv[SIZEOF_ARG] = { "git" };
6946 int argc = 1;
6948 /* When running random commands, initially show the
6949 * command in the title. However, it maybe later be
6950 * overwritten if a commit line is selected. */
6951 string_ncopy(next->ref, cmd, strlen(cmd));
6953 if (!argv_from_string(argv, &argc, cmd)) {
6954 report("Too many arguments");
6955 } else if (!prepare_update(next, argv, NULL)) {
6956 report("Failed to format command");
6957 } else {
6958 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
6959 }
6960 }
6962 request = REQ_NONE;
6963 break;
6964 }
6965 case REQ_SEARCH:
6966 case REQ_SEARCH_BACK:
6967 {
6968 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6969 char *search = read_prompt(prompt);
6971 if (search)
6972 string_ncopy(opt_search, search, strlen(search));
6973 else if (*opt_search)
6974 request = request == REQ_SEARCH ?
6975 REQ_FIND_NEXT :
6976 REQ_FIND_PREV;
6977 else
6978 request = REQ_NONE;
6979 break;
6980 }
6981 default:
6982 break;
6983 }
6984 }
6986 quit(0);
6988 return 0;
6989 }