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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 OPEN_EXTRA = 64, /* Open extra data from command. */
1439 };
1441 struct view_ops {
1442 /* What type of content being displayed. Used in the title bar. */
1443 const char *type;
1444 /* Open and reads in all view content. */
1445 bool (*open)(struct view *view, enum open_flags flags);
1446 /* Read one line; updates view->line. */
1447 bool (*read)(struct view *view, char *data);
1448 /* Draw one line; @lineno must be < view->height. */
1449 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1450 /* Depending on view handle a special requests. */
1451 enum request (*request)(struct view *view, enum request request, struct line *line);
1452 /* Search for regexp in a line. */
1453 bool (*grep)(struct view *view, struct line *line);
1454 /* Select line */
1455 void (*select)(struct view *view, struct line *line);
1456 };
1458 static struct view_ops blame_ops;
1459 static struct view_ops blob_ops;
1460 static struct view_ops diff_ops;
1461 static struct view_ops help_ops;
1462 static struct view_ops log_ops;
1463 static struct view_ops main_ops;
1464 static struct view_ops pager_ops;
1465 static struct view_ops stage_ops;
1466 static struct view_ops status_ops;
1467 static struct view_ops tree_ops;
1468 static struct view_ops branch_ops;
1470 #define VIEW_STR(type, name, ref, ops, map, git) \
1471 { type, name, ref, ops, map, git }
1473 #define VIEW_(id, name, ops, git, ref) \
1474 VIEW_STR(VIEW_##id, name, ref, ops, KEYMAP_##id, git)
1476 static struct view views[] = {
1477 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1478 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1479 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1480 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1481 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1482 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1483 VIEW_(BRANCH, "branch", &branch_ops, TRUE, ref_head),
1484 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1485 VIEW_(PAGER, "pager", &pager_ops, FALSE, ""),
1486 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1487 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1488 };
1490 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1492 #define foreach_view(view, i) \
1493 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1495 #define view_is_displayed(view) \
1496 (view == display[0] || view == display[1])
1498 static enum request
1499 view_request(struct view *view, enum request request)
1500 {
1501 if (!view || !view->lines)
1502 return request;
1503 return view->ops->request(view, request, &view->line[view->lineno]);
1504 }
1507 /*
1508 * View drawing.
1509 */
1511 static inline void
1512 set_view_attr(struct view *view, enum line_type type)
1513 {
1514 if (!view->curline->selected && view->curtype != type) {
1515 (void) wattrset(view->win, get_line_attr(type));
1516 wchgat(view->win, -1, 0, type, NULL);
1517 view->curtype = type;
1518 }
1519 }
1521 #define VIEW_MAX_LEN(view) ((view)->width + (view)->yoffset - (view)->col)
1523 static bool
1524 draw_chars(struct view *view, enum line_type type, const char *string,
1525 int max_len, bool use_tilde)
1526 {
1527 static char out_buffer[BUFSIZ * 2];
1528 int len = 0;
1529 int col = 0;
1530 int trimmed = FALSE;
1531 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1533 if (max_len <= 0)
1534 return VIEW_MAX_LEN(view) <= 0;
1536 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1538 set_view_attr(view, type);
1539 if (len > 0) {
1540 if (opt_iconv_out != ICONV_NONE) {
1541 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
1542 size_t inlen = len + 1;
1544 char *outbuf = out_buffer;
1545 size_t outlen = sizeof(out_buffer);
1547 size_t ret;
1549 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1550 if (ret != (size_t) -1) {
1551 string = out_buffer;
1552 len = sizeof(out_buffer) - outlen;
1553 }
1554 }
1556 waddnstr(view->win, string, len);
1558 if (trimmed && use_tilde) {
1559 set_view_attr(view, LINE_DELIMITER);
1560 waddch(view->win, '~');
1561 col++;
1562 }
1563 }
1565 view->col += col;
1566 return VIEW_MAX_LEN(view) <= 0;
1567 }
1569 static bool
1570 draw_space(struct view *view, enum line_type type, int max, int spaces)
1571 {
1572 static char space[] = " ";
1574 spaces = MIN(max, spaces);
1576 while (spaces > 0) {
1577 int len = MIN(spaces, sizeof(space) - 1);
1579 if (draw_chars(view, type, space, len, FALSE))
1580 return TRUE;
1581 spaces -= len;
1582 }
1584 return VIEW_MAX_LEN(view) <= 0;
1585 }
1587 static bool
1588 draw_text(struct view *view, enum line_type type, const char *string)
1589 {
1590 char text[SIZEOF_STR];
1592 do {
1593 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1595 if (draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE))
1596 return TRUE;
1597 string += pos;
1598 } while (*string);
1600 return VIEW_MAX_LEN(view) <= 0;
1601 }
1603 static bool
1604 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
1605 {
1606 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1607 int max = VIEW_MAX_LEN(view);
1608 int i;
1610 if (max < size)
1611 size = max;
1613 set_view_attr(view, type);
1614 /* Using waddch() instead of waddnstr() ensures that
1615 * they'll be rendered correctly for the cursor line. */
1616 for (i = skip; i < size; i++)
1617 waddch(view->win, graphic[i]);
1619 view->col += size;
1620 if (separator) {
1621 if (size < max && skip <= size)
1622 waddch(view->win, ' ');
1623 view->col++;
1624 }
1626 return VIEW_MAX_LEN(view) <= 0;
1627 }
1629 static bool
1630 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1631 {
1632 int max = MIN(VIEW_MAX_LEN(view), len);
1633 int col = view->col;
1635 if (!text)
1636 return draw_space(view, type, max, max);
1638 return draw_chars(view, type, text, max - 1, trim)
1639 || draw_space(view, LINE_DEFAULT, max - (view->col - col), max);
1640 }
1642 static bool
1643 draw_date(struct view *view, struct time *time)
1644 {
1645 const char *date = mkdate(time, opt_date);
1646 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
1648 if (opt_date == DATE_NO)
1649 return FALSE;
1651 return draw_field(view, LINE_DATE, date, cols, FALSE);
1652 }
1654 static bool
1655 draw_author(struct view *view, const char *author)
1656 {
1657 bool trim = opt_author_cols == 0 || opt_author_cols > 5;
1658 bool abbreviate = opt_author == AUTHOR_ABBREVIATED || !trim;
1660 if (opt_author == AUTHOR_NO)
1661 return FALSE;
1663 if (abbreviate && author)
1664 author = get_author_initials(author);
1666 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
1667 }
1669 static bool
1670 draw_mode(struct view *view, mode_t mode)
1671 {
1672 const char *str;
1674 if (S_ISDIR(mode))
1675 str = "drwxr-xr-x";
1676 else if (S_ISLNK(mode))
1677 str = "lrwxrwxrwx";
1678 else if (S_ISGITLINK(mode))
1679 str = "m---------";
1680 else if (S_ISREG(mode) && mode & S_IXUSR)
1681 str = "-rwxr-xr-x";
1682 else if (S_ISREG(mode))
1683 str = "-rw-r--r--";
1684 else
1685 str = "----------";
1687 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
1688 }
1690 static bool
1691 draw_lineno(struct view *view, unsigned int lineno)
1692 {
1693 char number[10];
1694 int digits3 = view->digits < 3 ? 3 : view->digits;
1695 int max = MIN(VIEW_MAX_LEN(view), digits3);
1696 char *text = NULL;
1697 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
1699 lineno += view->offset + 1;
1700 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1701 static char fmt[] = "%1ld";
1703 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
1704 if (string_format(number, fmt, lineno))
1705 text = number;
1706 }
1707 if (text)
1708 draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
1709 else
1710 draw_space(view, LINE_LINE_NUMBER, max, digits3);
1711 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
1712 }
1714 static bool
1715 draw_view_line(struct view *view, unsigned int lineno)
1716 {
1717 struct line *line;
1718 bool selected = (view->offset + lineno == view->lineno);
1720 assert(view_is_displayed(view));
1722 if (view->offset + lineno >= view->lines)
1723 return FALSE;
1725 line = &view->line[view->offset + lineno];
1727 wmove(view->win, lineno, 0);
1728 if (line->cleareol)
1729 wclrtoeol(view->win);
1730 view->col = 0;
1731 view->curline = line;
1732 view->curtype = LINE_NONE;
1733 line->selected = FALSE;
1734 line->dirty = line->cleareol = 0;
1736 if (selected) {
1737 set_view_attr(view, LINE_CURSOR);
1738 line->selected = TRUE;
1739 view->ops->select(view, line);
1740 }
1742 return view->ops->draw(view, line, lineno);
1743 }
1745 static void
1746 redraw_view_dirty(struct view *view)
1747 {
1748 bool dirty = FALSE;
1749 int lineno;
1751 for (lineno = 0; lineno < view->height; lineno++) {
1752 if (view->offset + lineno >= view->lines)
1753 break;
1754 if (!view->line[view->offset + lineno].dirty)
1755 continue;
1756 dirty = TRUE;
1757 if (!draw_view_line(view, lineno))
1758 break;
1759 }
1761 if (!dirty)
1762 return;
1763 wnoutrefresh(view->win);
1764 }
1766 static void
1767 redraw_view_from(struct view *view, int lineno)
1768 {
1769 assert(0 <= lineno && lineno < view->height);
1771 for (; lineno < view->height; lineno++) {
1772 if (!draw_view_line(view, lineno))
1773 break;
1774 }
1776 wnoutrefresh(view->win);
1777 }
1779 static void
1780 redraw_view(struct view *view)
1781 {
1782 werase(view->win);
1783 redraw_view_from(view, 0);
1784 }
1787 static void
1788 update_view_title(struct view *view)
1789 {
1790 char buf[SIZEOF_STR];
1791 char state[SIZEOF_STR];
1792 size_t bufpos = 0, statelen = 0;
1793 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
1795 assert(view_is_displayed(view));
1797 if (view->type != VIEW_STATUS && view->lines) {
1798 unsigned int view_lines = view->offset + view->height;
1799 unsigned int lines = view->lines
1800 ? MIN(view_lines, view->lines) * 100 / view->lines
1801 : 0;
1803 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
1804 view->ops->type,
1805 view->lineno + 1,
1806 view->lines,
1807 lines);
1809 }
1811 if (view->pipe) {
1812 time_t secs = time(NULL) - view->start_time;
1814 /* Three git seconds are a long time ... */
1815 if (secs > 2)
1816 string_format_from(state, &statelen, " loading %lds", secs);
1817 }
1819 string_format_from(buf, &bufpos, "[%s]", view->name);
1820 if (*view->ref && bufpos < view->width) {
1821 size_t refsize = strlen(view->ref);
1822 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1824 if (minsize < view->width)
1825 refsize = view->width - minsize + 7;
1826 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1827 }
1829 if (statelen && bufpos < view->width) {
1830 string_format_from(buf, &bufpos, "%s", state);
1831 }
1833 if (view == display[current_view])
1834 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
1835 else
1836 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
1838 mvwaddnstr(window, 0, 0, buf, bufpos);
1839 wclrtoeol(window);
1840 wnoutrefresh(window);
1841 }
1843 static int
1844 apply_step(double step, int value)
1845 {
1846 if (step >= 1)
1847 return (int) step;
1848 value *= step + 0.01;
1849 return value ? value : 1;
1850 }
1852 static void
1853 resize_display(void)
1854 {
1855 int offset, i;
1856 struct view *base = display[0];
1857 struct view *view = display[1] ? display[1] : display[0];
1859 /* Setup window dimensions */
1861 getmaxyx(stdscr, base->height, base->width);
1863 /* Make room for the status window. */
1864 base->height -= 1;
1866 if (view != base) {
1867 /* Horizontal split. */
1868 view->width = base->width;
1869 view->height = apply_step(opt_scale_split_view, base->height);
1870 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
1871 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
1872 base->height -= view->height;
1874 /* Make room for the title bar. */
1875 view->height -= 1;
1876 }
1878 /* Make room for the title bar. */
1879 base->height -= 1;
1881 offset = 0;
1883 foreach_displayed_view (view, i) {
1884 if (!display_win[i]) {
1885 display_win[i] = newwin(view->height, view->width, offset, 0);
1886 if (!display_win[i])
1887 die("Failed to create %s view", view->name);
1889 scrollok(display_win[i], FALSE);
1891 display_title[i] = newwin(1, view->width, offset + view->height, 0);
1892 if (!display_title[i])
1893 die("Failed to create title window");
1895 } else {
1896 wresize(display_win[i], view->height, view->width);
1897 mvwin(display_win[i], offset, 0);
1898 mvwin(display_title[i], offset + view->height, 0);
1899 }
1901 view->win = display_win[i];
1903 offset += view->height + 1;
1904 }
1905 }
1907 static void
1908 redraw_display(bool clear)
1909 {
1910 struct view *view;
1911 int i;
1913 foreach_displayed_view (view, i) {
1914 if (clear)
1915 wclear(view->win);
1916 redraw_view(view);
1917 update_view_title(view);
1918 }
1919 }
1922 /*
1923 * Option management
1924 */
1926 #define TOGGLE_MENU \
1927 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
1928 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
1929 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
1930 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
1931 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
1932 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
1934 static void
1935 toggle_option(enum request request)
1936 {
1937 const struct {
1938 enum request request;
1939 const struct enum_map *map;
1940 size_t map_size;
1941 } data[] = {
1942 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
1943 TOGGLE_MENU
1944 #undef TOGGLE_
1945 };
1946 const struct menu_item menu[] = {
1947 #define TOGGLE_(id, key, help, value, map) { key, help, value },
1948 TOGGLE_MENU
1949 #undef TOGGLE_
1950 { 0 }
1951 };
1952 int i = 0;
1954 if (request == REQ_OPTIONS) {
1955 if (!prompt_menu("Toggle option", menu, &i))
1956 return;
1957 } else {
1958 while (i < ARRAY_SIZE(data) && data[i].request != request)
1959 i++;
1960 if (i >= ARRAY_SIZE(data))
1961 die("Invalid request (%d)", request);
1962 }
1964 if (data[i].map != NULL) {
1965 unsigned int *opt = menu[i].data;
1967 *opt = (*opt + 1) % data[i].map_size;
1968 redraw_display(FALSE);
1969 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
1971 } else {
1972 bool *option = menu[i].data;
1974 *option = !*option;
1975 redraw_display(FALSE);
1976 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
1977 }
1978 }
1980 static void
1981 maximize_view(struct view *view, bool redraw)
1982 {
1983 memset(display, 0, sizeof(display));
1984 current_view = 0;
1985 display[current_view] = view;
1986 resize_display();
1987 if (redraw) {
1988 redraw_display(FALSE);
1989 report("");
1990 }
1991 }
1994 /*
1995 * Navigation
1996 */
1998 static bool
1999 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2000 {
2001 if (lineno >= view->lines)
2002 lineno = view->lines > 0 ? view->lines - 1 : 0;
2004 if (offset > lineno || offset + view->height <= lineno) {
2005 unsigned long half = view->height / 2;
2007 if (lineno > half)
2008 offset = lineno - half;
2009 else
2010 offset = 0;
2011 }
2013 if (offset != view->offset || lineno != view->lineno) {
2014 view->offset = offset;
2015 view->lineno = lineno;
2016 return TRUE;
2017 }
2019 return FALSE;
2020 }
2022 /* Scrolling backend */
2023 static void
2024 do_scroll_view(struct view *view, int lines)
2025 {
2026 bool redraw_current_line = FALSE;
2028 /* The rendering expects the new offset. */
2029 view->offset += lines;
2031 assert(0 <= view->offset && view->offset < view->lines);
2032 assert(lines);
2034 /* Move current line into the view. */
2035 if (view->lineno < view->offset) {
2036 view->lineno = view->offset;
2037 redraw_current_line = TRUE;
2038 } else if (view->lineno >= view->offset + view->height) {
2039 view->lineno = view->offset + view->height - 1;
2040 redraw_current_line = TRUE;
2041 }
2043 assert(view->offset <= view->lineno && view->lineno < view->lines);
2045 /* Redraw the whole screen if scrolling is pointless. */
2046 if (view->height < ABS(lines)) {
2047 redraw_view(view);
2049 } else {
2050 int line = lines > 0 ? view->height - lines : 0;
2051 int end = line + ABS(lines);
2053 scrollok(view->win, TRUE);
2054 wscrl(view->win, lines);
2055 scrollok(view->win, FALSE);
2057 while (line < end && draw_view_line(view, line))
2058 line++;
2060 if (redraw_current_line)
2061 draw_view_line(view, view->lineno - view->offset);
2062 wnoutrefresh(view->win);
2063 }
2065 view->has_scrolled = TRUE;
2066 report("");
2067 }
2069 /* Scroll frontend */
2070 static void
2071 scroll_view(struct view *view, enum request request)
2072 {
2073 int lines = 1;
2075 assert(view_is_displayed(view));
2077 switch (request) {
2078 case REQ_SCROLL_FIRST_COL:
2079 view->yoffset = 0;
2080 redraw_view_from(view, 0);
2081 report("");
2082 return;
2083 case REQ_SCROLL_LEFT:
2084 if (view->yoffset == 0) {
2085 report("Cannot scroll beyond the first column");
2086 return;
2087 }
2088 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2089 view->yoffset = 0;
2090 else
2091 view->yoffset -= apply_step(opt_hscroll, view->width);
2092 redraw_view_from(view, 0);
2093 report("");
2094 return;
2095 case REQ_SCROLL_RIGHT:
2096 view->yoffset += apply_step(opt_hscroll, view->width);
2097 redraw_view(view);
2098 report("");
2099 return;
2100 case REQ_SCROLL_PAGE_DOWN:
2101 lines = view->height;
2102 case REQ_SCROLL_LINE_DOWN:
2103 if (view->offset + lines > view->lines)
2104 lines = view->lines - view->offset;
2106 if (lines == 0 || view->offset + view->height >= view->lines) {
2107 report("Cannot scroll beyond the last line");
2108 return;
2109 }
2110 break;
2112 case REQ_SCROLL_PAGE_UP:
2113 lines = view->height;
2114 case REQ_SCROLL_LINE_UP:
2115 if (lines > view->offset)
2116 lines = view->offset;
2118 if (lines == 0) {
2119 report("Cannot scroll beyond the first line");
2120 return;
2121 }
2123 lines = -lines;
2124 break;
2126 default:
2127 die("request %d not handled in switch", request);
2128 }
2130 do_scroll_view(view, lines);
2131 }
2133 /* Cursor moving */
2134 static void
2135 move_view(struct view *view, enum request request)
2136 {
2137 int scroll_steps = 0;
2138 int steps;
2140 switch (request) {
2141 case REQ_MOVE_FIRST_LINE:
2142 steps = -view->lineno;
2143 break;
2145 case REQ_MOVE_LAST_LINE:
2146 steps = view->lines - view->lineno - 1;
2147 break;
2149 case REQ_MOVE_PAGE_UP:
2150 steps = view->height > view->lineno
2151 ? -view->lineno : -view->height;
2152 break;
2154 case REQ_MOVE_PAGE_DOWN:
2155 steps = view->lineno + view->height >= view->lines
2156 ? view->lines - view->lineno - 1 : view->height;
2157 break;
2159 case REQ_MOVE_UP:
2160 steps = -1;
2161 break;
2163 case REQ_MOVE_DOWN:
2164 steps = 1;
2165 break;
2167 default:
2168 die("request %d not handled in switch", request);
2169 }
2171 if (steps <= 0 && view->lineno == 0) {
2172 report("Cannot move beyond the first line");
2173 return;
2175 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2176 report("Cannot move beyond the last line");
2177 return;
2178 }
2180 /* Move the current line */
2181 view->lineno += steps;
2182 assert(0 <= view->lineno && view->lineno < view->lines);
2184 /* Check whether the view needs to be scrolled */
2185 if (view->lineno < view->offset ||
2186 view->lineno >= view->offset + view->height) {
2187 scroll_steps = steps;
2188 if (steps < 0 && -steps > view->offset) {
2189 scroll_steps = -view->offset;
2191 } else if (steps > 0) {
2192 if (view->lineno == view->lines - 1 &&
2193 view->lines > view->height) {
2194 scroll_steps = view->lines - view->offset - 1;
2195 if (scroll_steps >= view->height)
2196 scroll_steps -= view->height - 1;
2197 }
2198 }
2199 }
2201 if (!view_is_displayed(view)) {
2202 view->offset += scroll_steps;
2203 assert(0 <= view->offset && view->offset < view->lines);
2204 view->ops->select(view, &view->line[view->lineno]);
2205 return;
2206 }
2208 /* Repaint the old "current" line if we be scrolling */
2209 if (ABS(steps) < view->height)
2210 draw_view_line(view, view->lineno - steps - view->offset);
2212 if (scroll_steps) {
2213 do_scroll_view(view, scroll_steps);
2214 return;
2215 }
2217 /* Draw the current line */
2218 draw_view_line(view, view->lineno - view->offset);
2220 wnoutrefresh(view->win);
2221 report("");
2222 }
2225 /*
2226 * Searching
2227 */
2229 static void search_view(struct view *view, enum request request);
2231 static bool
2232 grep_text(struct view *view, const char *text[])
2233 {
2234 regmatch_t pmatch;
2235 size_t i;
2237 for (i = 0; text[i]; i++)
2238 if (*text[i] &&
2239 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2240 return TRUE;
2241 return FALSE;
2242 }
2244 static void
2245 select_view_line(struct view *view, unsigned long lineno)
2246 {
2247 unsigned long old_lineno = view->lineno;
2248 unsigned long old_offset = view->offset;
2250 if (goto_view_line(view, view->offset, lineno)) {
2251 if (view_is_displayed(view)) {
2252 if (old_offset != view->offset) {
2253 redraw_view(view);
2254 } else {
2255 draw_view_line(view, old_lineno - view->offset);
2256 draw_view_line(view, view->lineno - view->offset);
2257 wnoutrefresh(view->win);
2258 }
2259 } else {
2260 view->ops->select(view, &view->line[view->lineno]);
2261 }
2262 }
2263 }
2265 static void
2266 find_next(struct view *view, enum request request)
2267 {
2268 unsigned long lineno = view->lineno;
2269 int direction;
2271 if (!*view->grep) {
2272 if (!*opt_search)
2273 report("No previous search");
2274 else
2275 search_view(view, request);
2276 return;
2277 }
2279 switch (request) {
2280 case REQ_SEARCH:
2281 case REQ_FIND_NEXT:
2282 direction = 1;
2283 break;
2285 case REQ_SEARCH_BACK:
2286 case REQ_FIND_PREV:
2287 direction = -1;
2288 break;
2290 default:
2291 return;
2292 }
2294 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2295 lineno += direction;
2297 /* Note, lineno is unsigned long so will wrap around in which case it
2298 * will become bigger than view->lines. */
2299 for (; lineno < view->lines; lineno += direction) {
2300 if (view->ops->grep(view, &view->line[lineno])) {
2301 select_view_line(view, lineno);
2302 report("Line %ld matches '%s'", lineno + 1, view->grep);
2303 return;
2304 }
2305 }
2307 report("No match found for '%s'", view->grep);
2308 }
2310 static void
2311 search_view(struct view *view, enum request request)
2312 {
2313 int regex_err;
2315 if (view->regex) {
2316 regfree(view->regex);
2317 *view->grep = 0;
2318 } else {
2319 view->regex = calloc(1, sizeof(*view->regex));
2320 if (!view->regex)
2321 return;
2322 }
2324 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2325 if (regex_err != 0) {
2326 char buf[SIZEOF_STR] = "unknown error";
2328 regerror(regex_err, view->regex, buf, sizeof(buf));
2329 report("Search failed: %s", buf);
2330 return;
2331 }
2333 string_copy(view->grep, opt_search);
2335 find_next(view, request);
2336 }
2338 /*
2339 * Incremental updating
2340 */
2342 static void
2343 reset_view(struct view *view)
2344 {
2345 int i;
2347 for (i = 0; i < view->lines; i++)
2348 free(view->line[i].data);
2349 free(view->line);
2351 view->p_offset = view->offset;
2352 view->p_yoffset = view->yoffset;
2353 view->p_lineno = view->lineno;
2355 view->line = NULL;
2356 view->offset = 0;
2357 view->yoffset = 0;
2358 view->lines = 0;
2359 view->lineno = 0;
2360 view->vid[0] = 0;
2361 view->update_secs = 0;
2362 }
2364 static const char *
2365 format_arg(const char *name)
2366 {
2367 static struct {
2368 const char *name;
2369 size_t namelen;
2370 const char *value;
2371 const char *value_if_empty;
2372 } vars[] = {
2373 #define FORMAT_VAR(name, value, value_if_empty) \
2374 { name, STRING_SIZE(name), value, value_if_empty }
2375 FORMAT_VAR("%(directory)", opt_path, "."),
2376 FORMAT_VAR("%(file)", opt_file, ""),
2377 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2378 FORMAT_VAR("%(head)", ref_head, ""),
2379 FORMAT_VAR("%(commit)", ref_commit, ""),
2380 FORMAT_VAR("%(blob)", ref_blob, ""),
2381 FORMAT_VAR("%(branch)", ref_branch, ""),
2382 };
2383 int i;
2385 for (i = 0; i < ARRAY_SIZE(vars); i++)
2386 if (!strncmp(name, vars[i].name, vars[i].namelen))
2387 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2389 report("Unknown replacement: `%s`", name);
2390 return NULL;
2391 }
2393 static bool
2394 format_argv(const char ***dst_argv, const char *src_argv[], bool first)
2395 {
2396 char buf[SIZEOF_STR];
2397 int argc;
2399 argv_free(*dst_argv);
2401 for (argc = 0; src_argv[argc]; argc++) {
2402 const char *arg = src_argv[argc];
2403 size_t bufpos = 0;
2405 if (!strcmp(arg, "%(fileargs)")) {
2406 if (!argv_append_array(dst_argv, opt_file_argv))
2407 break;
2408 continue;
2410 } else if (!strcmp(arg, "%(diffargs)")) {
2411 if (!argv_append_array(dst_argv, opt_diff_argv))
2412 break;
2413 continue;
2415 } else if (!strcmp(arg, "%(blameargs)")) {
2416 if (!argv_append_array(dst_argv, opt_blame_argv))
2417 break;
2418 continue;
2420 } else if (!strcmp(arg, "%(revargs)") ||
2421 (first && !strcmp(arg, "%(commit)"))) {
2422 if (!argv_append_array(dst_argv, opt_rev_argv))
2423 break;
2424 continue;
2425 }
2427 while (arg) {
2428 char *next = strstr(arg, "%(");
2429 int len = next - arg;
2430 const char *value;
2432 if (!next) {
2433 len = strlen(arg);
2434 value = "";
2436 } else {
2437 value = format_arg(next);
2439 if (!value) {
2440 return FALSE;
2441 }
2442 }
2444 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2445 return FALSE;
2447 arg = next ? strchr(next, ')') + 1 : NULL;
2448 }
2450 if (!argv_append(dst_argv, buf))
2451 break;
2452 }
2454 return src_argv[argc] == NULL;
2455 }
2457 static bool
2458 restore_view_position(struct view *view)
2459 {
2460 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2461 return FALSE;
2463 /* Changing the view position cancels the restoring. */
2464 /* FIXME: Changing back to the first line is not detected. */
2465 if (view->offset != 0 || view->lineno != 0) {
2466 view->p_restore = FALSE;
2467 return FALSE;
2468 }
2470 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2471 view_is_displayed(view))
2472 werase(view->win);
2474 view->yoffset = view->p_yoffset;
2475 view->p_restore = FALSE;
2477 return TRUE;
2478 }
2480 static void
2481 end_update(struct view *view, bool force)
2482 {
2483 if (!view->pipe)
2484 return;
2485 while (!view->ops->read(view, NULL))
2486 if (!force)
2487 return;
2488 if (force)
2489 io_kill(view->pipe);
2490 io_done(view->pipe);
2491 view->pipe = NULL;
2492 }
2494 static void
2495 setup_update(struct view *view, const char *vid)
2496 {
2497 reset_view(view);
2498 string_copy_rev(view->vid, vid);
2499 view->pipe = &view->io;
2500 view->start_time = time(NULL);
2501 }
2503 static bool
2504 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
2505 {
2506 bool extra = !!(flags & (OPEN_EXTRA));
2507 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED | OPEN_EXTRA));
2508 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2510 if (!reload && !strcmp(view->vid, view->id))
2511 return TRUE;
2513 if (view->pipe) {
2514 if (extra)
2515 io_done(view->pipe);
2516 else
2517 end_update(view, TRUE);
2518 }
2520 if (!refresh) {
2521 view->dir = dir;
2522 if (!format_argv(&view->argv, argv, !view->prev))
2523 return FALSE;
2525 /* Put the current ref_* value to the view title ref
2526 * member. This is needed by the blob view. Most other
2527 * views sets it automatically after loading because the
2528 * first line is a commit line. */
2529 string_copy_rev(view->ref, view->id);
2530 }
2532 if (view->argv && view->argv[0] &&
2533 !io_run(&view->io, IO_RD, view->dir, view->argv))
2534 return FALSE;
2536 if (!extra)
2537 setup_update(view, view->id);
2539 return TRUE;
2540 }
2542 static bool
2543 view_open(struct view *view, enum open_flags flags)
2544 {
2545 return begin_update(view, NULL, NULL, flags);
2546 }
2548 static bool
2549 update_view(struct view *view)
2550 {
2551 char out_buffer[BUFSIZ * 2];
2552 char *line;
2553 /* Clear the view and redraw everything since the tree sorting
2554 * might have rearranged things. */
2555 bool redraw = view->lines == 0;
2556 bool can_read = TRUE;
2558 if (!view->pipe)
2559 return TRUE;
2561 if (!io_can_read(view->pipe, FALSE)) {
2562 if (view->lines == 0 && view_is_displayed(view)) {
2563 time_t secs = time(NULL) - view->start_time;
2565 if (secs > 1 && secs > view->update_secs) {
2566 if (view->update_secs == 0)
2567 redraw_view(view);
2568 update_view_title(view);
2569 view->update_secs = secs;
2570 }
2571 }
2572 return TRUE;
2573 }
2575 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2576 if (opt_iconv_in != ICONV_NONE) {
2577 ICONV_CONST char *inbuf = line;
2578 size_t inlen = strlen(line) + 1;
2580 char *outbuf = out_buffer;
2581 size_t outlen = sizeof(out_buffer);
2583 size_t ret;
2585 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2586 if (ret != (size_t) -1)
2587 line = out_buffer;
2588 }
2590 if (!view->ops->read(view, line)) {
2591 report("Allocation failure");
2592 end_update(view, TRUE);
2593 return FALSE;
2594 }
2595 }
2597 {
2598 unsigned long lines = view->lines;
2599 int digits;
2601 for (digits = 0; lines; digits++)
2602 lines /= 10;
2604 /* Keep the displayed view in sync with line number scaling. */
2605 if (digits != view->digits) {
2606 view->digits = digits;
2607 if (opt_line_number || view->type == VIEW_BLAME)
2608 redraw = TRUE;
2609 }
2610 }
2612 if (io_error(view->pipe)) {
2613 report("Failed to read: %s", io_strerror(view->pipe));
2614 end_update(view, TRUE);
2616 } else if (io_eof(view->pipe)) {
2617 if (view_is_displayed(view))
2618 report("");
2619 end_update(view, FALSE);
2620 }
2622 if (restore_view_position(view))
2623 redraw = TRUE;
2625 if (!view_is_displayed(view))
2626 return TRUE;
2628 if (redraw)
2629 redraw_view_from(view, 0);
2630 else
2631 redraw_view_dirty(view);
2633 /* Update the title _after_ the redraw so that if the redraw picks up a
2634 * commit reference in view->ref it'll be available here. */
2635 update_view_title(view);
2636 return TRUE;
2637 }
2639 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2641 static struct line *
2642 add_line_data(struct view *view, void *data, enum line_type type)
2643 {
2644 struct line *line;
2646 if (!realloc_lines(&view->line, view->lines, 1))
2647 return NULL;
2649 line = &view->line[view->lines++];
2650 memset(line, 0, sizeof(*line));
2651 line->type = type;
2652 line->data = data;
2653 line->dirty = 1;
2655 return line;
2656 }
2658 static struct line *
2659 add_line_text(struct view *view, const char *text, enum line_type type)
2660 {
2661 char *data = text ? strdup(text) : NULL;
2663 return data ? add_line_data(view, data, type) : NULL;
2664 }
2666 static struct line *
2667 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2668 {
2669 char buf[SIZEOF_STR];
2670 va_list args;
2672 va_start(args, fmt);
2673 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2674 buf[0] = 0;
2675 va_end(args);
2677 return buf[0] ? add_line_text(view, buf, type) : NULL;
2678 }
2680 /*
2681 * View opening
2682 */
2684 static void
2685 load_view(struct view *view, enum open_flags flags)
2686 {
2687 if (view->pipe)
2688 end_update(view, TRUE);
2689 if (!view->ops->open(view, flags)) {
2690 report("Failed to load %s view", view->name);
2691 return;
2692 }
2693 restore_view_position(view);
2695 if (view->pipe && view->lines == 0) {
2696 /* Clear the old view and let the incremental updating refill
2697 * the screen. */
2698 werase(view->win);
2699 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2700 report("");
2701 } else if (view_is_displayed(view)) {
2702 redraw_view(view);
2703 report("");
2704 }
2705 }
2707 #define refresh_view(view) load_view(view, OPEN_REFRESH)
2709 static void
2710 split_view(struct view *prev, struct view *view)
2711 {
2712 display[1] = view;
2713 current_view = 1;
2714 view->parent = prev;
2715 resize_display();
2717 if (prev->lineno - prev->offset >= prev->height) {
2718 /* Take the title line into account. */
2719 int lines = prev->lineno - prev->offset - prev->height + 1;
2721 /* Scroll the view that was split if the current line is
2722 * outside the new limited view. */
2723 do_scroll_view(prev, lines);
2724 }
2726 if (view != prev && view_is_displayed(prev)) {
2727 /* "Blur" the previous view. */
2728 update_view_title(prev);
2729 }
2730 }
2732 static void
2733 open_view(struct view *prev, enum request request, enum open_flags flags)
2734 {
2735 bool split = !!(flags & OPEN_SPLIT);
2736 bool reload = !!(flags & (OPEN_RELOAD | OPEN_PREPARED));
2737 struct view *view = VIEW(request);
2738 int nviews = displayed_views();
2740 assert(flags ^ OPEN_REFRESH);
2742 if (view == prev && nviews == 1 && !reload) {
2743 report("Already in %s view", view->name);
2744 return;
2745 }
2747 if (view->git_dir && !opt_git_dir[0]) {
2748 report("The %s view is disabled in pager view", view->name);
2749 return;
2750 }
2752 if (split) {
2753 split_view(prev, view);
2754 } else {
2755 maximize_view(view, FALSE);
2756 }
2758 /* No prev signals that this is the first loaded view. */
2759 if (prev && view != prev) {
2760 view->prev = prev;
2761 }
2763 load_view(view, flags);
2764 }
2766 static void
2767 open_argv(struct view *prev, struct view *view, const char *argv[], const char *dir, enum open_flags flags)
2768 {
2769 enum request request = view - views + REQ_OFFSET + 1;
2771 if (view->pipe)
2772 end_update(view, TRUE);
2773 view->dir = dir;
2775 if (!argv_copy(&view->argv, argv)) {
2776 report("Failed to open %s view: %s", view->name, io_strerror(&view->io));
2777 } else {
2778 open_view(prev, request, flags | OPEN_PREPARED);
2779 }
2780 }
2782 static void
2783 open_file(struct view *prev, struct view *view, const char *file, enum open_flags flags)
2784 {
2785 const char *file_argv[] = { opt_cdup, file , NULL };
2787 open_argv(prev, view, file_argv, opt_cdup, flags);
2788 }
2790 static void
2791 open_external_viewer(const char *argv[], const char *dir)
2792 {
2793 def_prog_mode(); /* save current tty modes */
2794 endwin(); /* restore original tty modes */
2795 io_run_fg(argv, dir);
2796 fprintf(stderr, "Press Enter to continue");
2797 getc(opt_tty);
2798 reset_prog_mode();
2799 redraw_display(TRUE);
2800 }
2802 static void
2803 open_mergetool(const char *file)
2804 {
2805 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2807 open_external_viewer(mergetool_argv, opt_cdup);
2808 }
2810 static void
2811 open_editor(const char *file)
2812 {
2813 const char *editor_argv[] = { "vi", file, NULL };
2814 const char *editor;
2816 editor = getenv("GIT_EDITOR");
2817 if (!editor && *opt_editor)
2818 editor = opt_editor;
2819 if (!editor)
2820 editor = getenv("VISUAL");
2821 if (!editor)
2822 editor = getenv("EDITOR");
2823 if (!editor)
2824 editor = "vi";
2826 editor_argv[0] = editor;
2827 open_external_viewer(editor_argv, opt_cdup);
2828 }
2830 static void
2831 open_run_request(enum request request)
2832 {
2833 struct run_request *req = get_run_request(request);
2834 const char **argv = NULL;
2836 if (!req) {
2837 report("Unknown run request");
2838 return;
2839 }
2841 if (format_argv(&argv, req->argv, FALSE))
2842 open_external_viewer(argv, NULL);
2843 if (argv)
2844 argv_free(argv);
2845 free(argv);
2846 }
2848 /*
2849 * User request switch noodle
2850 */
2852 static int
2853 view_driver(struct view *view, enum request request)
2854 {
2855 int i;
2857 if (request == REQ_NONE)
2858 return TRUE;
2860 if (request > REQ_NONE) {
2861 open_run_request(request);
2862 view_request(view, REQ_REFRESH);
2863 return TRUE;
2864 }
2866 request = view_request(view, request);
2867 if (request == REQ_NONE)
2868 return TRUE;
2870 switch (request) {
2871 case REQ_MOVE_UP:
2872 case REQ_MOVE_DOWN:
2873 case REQ_MOVE_PAGE_UP:
2874 case REQ_MOVE_PAGE_DOWN:
2875 case REQ_MOVE_FIRST_LINE:
2876 case REQ_MOVE_LAST_LINE:
2877 move_view(view, request);
2878 break;
2880 case REQ_SCROLL_FIRST_COL:
2881 case REQ_SCROLL_LEFT:
2882 case REQ_SCROLL_RIGHT:
2883 case REQ_SCROLL_LINE_DOWN:
2884 case REQ_SCROLL_LINE_UP:
2885 case REQ_SCROLL_PAGE_DOWN:
2886 case REQ_SCROLL_PAGE_UP:
2887 scroll_view(view, request);
2888 break;
2890 case REQ_VIEW_BLAME:
2891 if (!opt_file[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_BLOB:
2900 if (!ref_blob[0]) {
2901 report("No file chosen, press %s to open tree view",
2902 get_key(view->keymap, REQ_VIEW_TREE));
2903 break;
2904 }
2905 open_view(view, request, OPEN_DEFAULT);
2906 break;
2908 case REQ_VIEW_PAGER:
2909 if (view == NULL) {
2910 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2911 die("Failed to open stdin");
2912 open_view(view, request, OPEN_PREPARED);
2913 break;
2914 }
2916 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2917 report("No pager content, press %s to run command from prompt",
2918 get_key(view->keymap, REQ_PROMPT));
2919 break;
2920 }
2921 open_view(view, request, OPEN_DEFAULT);
2922 break;
2924 case REQ_VIEW_STAGE:
2925 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2926 report("No stage content, press %s to open the status view and choose file",
2927 get_key(view->keymap, REQ_VIEW_STATUS));
2928 break;
2929 }
2930 open_view(view, request, OPEN_DEFAULT);
2931 break;
2933 case REQ_VIEW_STATUS:
2934 if (opt_is_inside_work_tree == FALSE) {
2935 report("The status view requires a working tree");
2936 break;
2937 }
2938 open_view(view, request, OPEN_DEFAULT);
2939 break;
2941 case REQ_VIEW_MAIN:
2942 case REQ_VIEW_DIFF:
2943 case REQ_VIEW_LOG:
2944 case REQ_VIEW_TREE:
2945 case REQ_VIEW_HELP:
2946 case REQ_VIEW_BRANCH:
2947 open_view(view, request, OPEN_DEFAULT);
2948 break;
2950 case REQ_NEXT:
2951 case REQ_PREVIOUS:
2952 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2954 if (view->parent) {
2955 int line;
2957 view = view->parent;
2958 line = view->lineno;
2959 move_view(view, request);
2960 if (view_is_displayed(view))
2961 update_view_title(view);
2962 if (line != view->lineno)
2963 view_request(view, REQ_ENTER);
2964 } else {
2965 move_view(view, request);
2966 }
2967 break;
2969 case REQ_VIEW_NEXT:
2970 {
2971 int nviews = displayed_views();
2972 int next_view = (current_view + 1) % nviews;
2974 if (next_view == current_view) {
2975 report("Only one view is displayed");
2976 break;
2977 }
2979 current_view = next_view;
2980 /* Blur out the title of the previous view. */
2981 update_view_title(view);
2982 report("");
2983 break;
2984 }
2985 case REQ_REFRESH:
2986 report("Refreshing is not yet supported for the %s view", view->name);
2987 break;
2989 case REQ_MAXIMIZE:
2990 if (displayed_views() == 2)
2991 maximize_view(view, TRUE);
2992 break;
2994 case REQ_OPTIONS:
2995 case REQ_TOGGLE_LINENO:
2996 case REQ_TOGGLE_DATE:
2997 case REQ_TOGGLE_AUTHOR:
2998 case REQ_TOGGLE_GRAPHIC:
2999 case REQ_TOGGLE_REV_GRAPH:
3000 case REQ_TOGGLE_REFS:
3001 toggle_option(request);
3002 break;
3004 case REQ_TOGGLE_SORT_FIELD:
3005 case REQ_TOGGLE_SORT_ORDER:
3006 report("Sorting is not yet supported for the %s view", view->name);
3007 break;
3009 case REQ_SEARCH:
3010 case REQ_SEARCH_BACK:
3011 search_view(view, request);
3012 break;
3014 case REQ_FIND_NEXT:
3015 case REQ_FIND_PREV:
3016 find_next(view, request);
3017 break;
3019 case REQ_STOP_LOADING:
3020 foreach_view(view, i) {
3021 if (view->pipe)
3022 report("Stopped loading the %s view", view->name),
3023 end_update(view, TRUE);
3024 }
3025 break;
3027 case REQ_SHOW_VERSION:
3028 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3029 return TRUE;
3031 case REQ_SCREEN_REDRAW:
3032 redraw_display(TRUE);
3033 break;
3035 case REQ_EDIT:
3036 report("Nothing to edit");
3037 break;
3039 case REQ_ENTER:
3040 report("Nothing to enter");
3041 break;
3043 case REQ_VIEW_CLOSE:
3044 /* XXX: Mark closed views by letting view->prev point to the
3045 * view itself. Parents to closed view should never be
3046 * followed. */
3047 if (view->prev && view->prev != view) {
3048 maximize_view(view->prev, TRUE);
3049 view->prev = view;
3050 break;
3051 }
3052 /* Fall-through */
3053 case REQ_QUIT:
3054 return FALSE;
3056 default:
3057 report("Unknown key, press %s for help",
3058 get_key(view->keymap, REQ_VIEW_HELP));
3059 return TRUE;
3060 }
3062 return TRUE;
3063 }
3066 /*
3067 * View backend utilities
3068 */
3070 enum sort_field {
3071 ORDERBY_NAME,
3072 ORDERBY_DATE,
3073 ORDERBY_AUTHOR,
3074 };
3076 struct sort_state {
3077 const enum sort_field *fields;
3078 size_t size, current;
3079 bool reverse;
3080 };
3082 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3083 #define get_sort_field(state) ((state).fields[(state).current])
3084 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3086 static void
3087 sort_view(struct view *view, enum request request, struct sort_state *state,
3088 int (*compare)(const void *, const void *))
3089 {
3090 switch (request) {
3091 case REQ_TOGGLE_SORT_FIELD:
3092 state->current = (state->current + 1) % state->size;
3093 break;
3095 case REQ_TOGGLE_SORT_ORDER:
3096 state->reverse = !state->reverse;
3097 break;
3098 default:
3099 die("Not a sort request");
3100 }
3102 qsort(view->line, view->lines, sizeof(*view->line), compare);
3103 redraw_view(view);
3104 }
3106 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3108 /* Small author cache to reduce memory consumption. It uses binary
3109 * search to lookup or find place to position new entries. No entries
3110 * are ever freed. */
3111 static const char *
3112 get_author(const char *name)
3113 {
3114 static const char **authors;
3115 static size_t authors_size;
3116 int from = 0, to = authors_size - 1;
3118 while (from <= to) {
3119 size_t pos = (to + from) / 2;
3120 int cmp = strcmp(name, authors[pos]);
3122 if (!cmp)
3123 return authors[pos];
3125 if (cmp < 0)
3126 to = pos - 1;
3127 else
3128 from = pos + 1;
3129 }
3131 if (!realloc_authors(&authors, authors_size, 1))
3132 return NULL;
3133 name = strdup(name);
3134 if (!name)
3135 return NULL;
3137 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3138 authors[from] = name;
3139 authors_size++;
3141 return name;
3142 }
3144 static void
3145 parse_timesec(struct time *time, const char *sec)
3146 {
3147 time->sec = (time_t) atol(sec);
3148 }
3150 static void
3151 parse_timezone(struct time *time, const char *zone)
3152 {
3153 long tz;
3155 tz = ('0' - zone[1]) * 60 * 60 * 10;
3156 tz += ('0' - zone[2]) * 60 * 60;
3157 tz += ('0' - zone[3]) * 60 * 10;
3158 tz += ('0' - zone[4]) * 60;
3160 if (zone[0] == '-')
3161 tz = -tz;
3163 time->tz = tz;
3164 time->sec -= tz;
3165 }
3167 /* Parse author lines where the name may be empty:
3168 * author <email@address.tld> 1138474660 +0100
3169 */
3170 static void
3171 parse_author_line(char *ident, const char **author, struct time *time)
3172 {
3173 char *nameend = strchr(ident, '<');
3174 char *emailend = strchr(ident, '>');
3176 if (nameend && emailend)
3177 *nameend = *emailend = 0;
3178 ident = chomp_string(ident);
3179 if (!*ident) {
3180 if (nameend)
3181 ident = chomp_string(nameend + 1);
3182 if (!*ident)
3183 ident = "Unknown";
3184 }
3186 *author = get_author(ident);
3188 /* Parse epoch and timezone */
3189 if (emailend && emailend[1] == ' ') {
3190 char *secs = emailend + 2;
3191 char *zone = strchr(secs, ' ');
3193 parse_timesec(time, secs);
3195 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3196 parse_timezone(time, zone + 1);
3197 }
3198 }
3200 /*
3201 * Pager backend
3202 */
3204 static bool
3205 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3206 {
3207 if (opt_line_number && draw_lineno(view, lineno))
3208 return TRUE;
3210 draw_text(view, line->type, line->data);
3211 return TRUE;
3212 }
3214 static bool
3215 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3216 {
3217 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3218 char ref[SIZEOF_STR];
3220 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3221 return TRUE;
3223 /* This is the only fatal call, since it can "corrupt" the buffer. */
3224 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3225 return FALSE;
3227 return TRUE;
3228 }
3230 static void
3231 add_pager_refs(struct view *view, struct line *line)
3232 {
3233 char buf[SIZEOF_STR];
3234 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3235 struct ref_list *list;
3236 size_t bufpos = 0, i;
3237 const char *sep = "Refs: ";
3238 bool is_tag = FALSE;
3240 assert(line->type == LINE_COMMIT);
3242 list = get_ref_list(commit_id);
3243 if (!list) {
3244 if (view->type == VIEW_DIFF)
3245 goto try_add_describe_ref;
3246 return;
3247 }
3249 for (i = 0; i < list->size; i++) {
3250 struct ref *ref = list->refs[i];
3251 const char *fmt = ref->tag ? "%s[%s]" :
3252 ref->remote ? "%s<%s>" : "%s%s";
3254 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3255 return;
3256 sep = ", ";
3257 if (ref->tag)
3258 is_tag = TRUE;
3259 }
3261 if (!is_tag && view->type == VIEW_DIFF) {
3262 try_add_describe_ref:
3263 /* Add <tag>-g<commit_id> "fake" reference. */
3264 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3265 return;
3266 }
3268 if (bufpos == 0)
3269 return;
3271 add_line_text(view, buf, LINE_PP_REFS);
3272 }
3274 static bool
3275 pager_read(struct view *view, char *data)
3276 {
3277 struct line *line;
3279 if (!data)
3280 return TRUE;
3282 line = add_line_text(view, data, get_line_type(data));
3283 if (!line)
3284 return FALSE;
3286 if (line->type == LINE_COMMIT &&
3287 (view->type == VIEW_DIFF ||
3288 view->type == VIEW_LOG))
3289 add_pager_refs(view, line);
3291 return TRUE;
3292 }
3294 static enum request
3295 pager_request(struct view *view, enum request request, struct line *line)
3296 {
3297 int split = 0;
3299 if (request != REQ_ENTER)
3300 return request;
3302 if (line->type == LINE_COMMIT &&
3303 (view->type == VIEW_LOG ||
3304 view->type == VIEW_PAGER)) {
3305 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3306 split = 1;
3307 }
3309 /* Always scroll the view even if it was split. That way
3310 * you can use Enter to scroll through the log view and
3311 * split open each commit diff. */
3312 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3314 /* FIXME: A minor workaround. Scrolling the view will call report("")
3315 * but if we are scrolling a non-current view this won't properly
3316 * update the view title. */
3317 if (split)
3318 update_view_title(view);
3320 return REQ_NONE;
3321 }
3323 static bool
3324 pager_grep(struct view *view, struct line *line)
3325 {
3326 const char *text[] = { line->data, NULL };
3328 return grep_text(view, text);
3329 }
3331 static void
3332 pager_select(struct view *view, struct line *line)
3333 {
3334 if (line->type == LINE_COMMIT) {
3335 char *text = (char *)line->data + STRING_SIZE("commit ");
3337 if (view->type != VIEW_PAGER)
3338 string_copy_rev(view->ref, text);
3339 string_copy_rev(ref_commit, text);
3340 }
3341 }
3343 static struct view_ops pager_ops = {
3344 "line",
3345 view_open,
3346 pager_read,
3347 pager_draw,
3348 pager_request,
3349 pager_grep,
3350 pager_select,
3351 };
3353 static bool
3354 log_open(struct view *view, enum open_flags flags)
3355 {
3356 static const char *log_argv[] = {
3357 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3358 };
3360 return begin_update(view, NULL, log_argv, flags);
3361 }
3363 static enum request
3364 log_request(struct view *view, enum request request, struct line *line)
3365 {
3366 switch (request) {
3367 case REQ_REFRESH:
3368 load_refs();
3369 refresh_view(view);
3370 return REQ_NONE;
3371 default:
3372 return pager_request(view, request, line);
3373 }
3374 }
3376 static struct view_ops log_ops = {
3377 "line",
3378 log_open,
3379 pager_read,
3380 pager_draw,
3381 log_request,
3382 pager_grep,
3383 pager_select,
3384 };
3386 static bool
3387 diff_open(struct view *view, enum open_flags flags)
3388 {
3389 static const char *diff_argv[] = {
3390 "git", "show", "--pretty=fuller", "--no-color", "--root",
3391 "--patch-with-stat", "--find-copies-harder", "-C",
3392 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3393 };
3395 return begin_update(view, NULL, diff_argv, flags);
3396 }
3398 static bool
3399 diff_read(struct view *view, char *data)
3400 {
3401 if (!data) {
3402 /* Fall back to retry if no diff will be shown. */
3403 if (view->lines == 0 && opt_file_argv) {
3404 int pos = argv_size(view->argv)
3405 - argv_size(opt_file_argv) - 1;
3407 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3408 for (; view->argv[pos]; pos++) {
3409 free((void *) view->argv[pos]);
3410 view->argv[pos] = NULL;
3411 }
3413 if (view->pipe)
3414 io_done(view->pipe);
3415 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3416 return FALSE;
3417 }
3418 }
3419 return TRUE;
3420 }
3422 return pager_read(view, data);
3423 }
3425 static struct view_ops diff_ops = {
3426 "line",
3427 diff_open,
3428 diff_read,
3429 pager_draw,
3430 pager_request,
3431 pager_grep,
3432 pager_select,
3433 };
3435 /*
3436 * Help backend
3437 */
3439 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
3441 static bool
3442 help_open_keymap_title(struct view *view, enum keymap keymap)
3443 {
3444 struct line *line;
3446 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3447 help_keymap_hidden[keymap] ? '+' : '-',
3448 enum_name(keymap_table[keymap]));
3449 if (line)
3450 line->other = keymap;
3452 return help_keymap_hidden[keymap];
3453 }
3455 static void
3456 help_open_keymap(struct view *view, enum keymap keymap)
3457 {
3458 const char *group = NULL;
3459 char buf[SIZEOF_STR];
3460 size_t bufpos;
3461 bool add_title = TRUE;
3462 int i;
3464 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3465 const char *key = NULL;
3467 if (req_info[i].request == REQ_NONE)
3468 continue;
3470 if (!req_info[i].request) {
3471 group = req_info[i].help;
3472 continue;
3473 }
3475 key = get_keys(keymap, req_info[i].request, TRUE);
3476 if (!key || !*key)
3477 continue;
3479 if (add_title && help_open_keymap_title(view, keymap))
3480 return;
3481 add_title = FALSE;
3483 if (group) {
3484 add_line_text(view, group, LINE_HELP_GROUP);
3485 group = NULL;
3486 }
3488 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3489 enum_name(req_info[i]), req_info[i].help);
3490 }
3492 group = "External commands:";
3494 for (i = 0; i < run_requests; i++) {
3495 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3496 const char *key;
3497 int argc;
3499 if (!req || req->keymap != keymap)
3500 continue;
3502 key = get_key_name(req->key);
3503 if (!*key)
3504 key = "(no key defined)";
3506 if (add_title && help_open_keymap_title(view, keymap))
3507 return;
3508 if (group) {
3509 add_line_text(view, group, LINE_HELP_GROUP);
3510 group = NULL;
3511 }
3513 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3514 if (!string_format_from(buf, &bufpos, "%s%s",
3515 argc ? " " : "", req->argv[argc]))
3516 return;
3518 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3519 }
3520 }
3522 static bool
3523 help_open(struct view *view, enum open_flags flags)
3524 {
3525 enum keymap keymap;
3527 reset_view(view);
3528 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3529 add_line_text(view, "", LINE_DEFAULT);
3531 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
3532 help_open_keymap(view, keymap);
3534 return TRUE;
3535 }
3537 static enum request
3538 help_request(struct view *view, enum request request, struct line *line)
3539 {
3540 switch (request) {
3541 case REQ_ENTER:
3542 if (line->type == LINE_HELP_KEYMAP) {
3543 help_keymap_hidden[line->other] =
3544 !help_keymap_hidden[line->other];
3545 refresh_view(view);
3546 }
3548 return REQ_NONE;
3549 default:
3550 return pager_request(view, request, line);
3551 }
3552 }
3554 static struct view_ops help_ops = {
3555 "line",
3556 help_open,
3557 NULL,
3558 pager_draw,
3559 help_request,
3560 pager_grep,
3561 pager_select,
3562 };
3565 /*
3566 * Tree backend
3567 */
3569 struct tree_stack_entry {
3570 struct tree_stack_entry *prev; /* Entry below this in the stack */
3571 unsigned long lineno; /* Line number to restore */
3572 char *name; /* Position of name in opt_path */
3573 };
3575 /* The top of the path stack. */
3576 static struct tree_stack_entry *tree_stack = NULL;
3577 unsigned long tree_lineno = 0;
3579 static void
3580 pop_tree_stack_entry(void)
3581 {
3582 struct tree_stack_entry *entry = tree_stack;
3584 tree_lineno = entry->lineno;
3585 entry->name[0] = 0;
3586 tree_stack = entry->prev;
3587 free(entry);
3588 }
3590 static void
3591 push_tree_stack_entry(const char *name, unsigned long lineno)
3592 {
3593 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3594 size_t pathlen = strlen(opt_path);
3596 if (!entry)
3597 return;
3599 entry->prev = tree_stack;
3600 entry->name = opt_path + pathlen;
3601 tree_stack = entry;
3603 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3604 pop_tree_stack_entry();
3605 return;
3606 }
3608 /* Move the current line to the first tree entry. */
3609 tree_lineno = 1;
3610 entry->lineno = lineno;
3611 }
3613 /* Parse output from git-ls-tree(1):
3614 *
3615 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3616 */
3618 #define SIZEOF_TREE_ATTR \
3619 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3621 #define SIZEOF_TREE_MODE \
3622 STRING_SIZE("100644 ")
3624 #define TREE_ID_OFFSET \
3625 STRING_SIZE("100644 blob ")
3627 struct tree_entry {
3628 char id[SIZEOF_REV];
3629 mode_t mode;
3630 struct time time; /* Date from the author ident. */
3631 const char *author; /* Author of the commit. */
3632 char name[1];
3633 };
3635 static const char *
3636 tree_path(const struct line *line)
3637 {
3638 return ((struct tree_entry *) line->data)->name;
3639 }
3641 static int
3642 tree_compare_entry(const struct line *line1, const struct line *line2)
3643 {
3644 if (line1->type != line2->type)
3645 return line1->type == LINE_TREE_DIR ? -1 : 1;
3646 return strcmp(tree_path(line1), tree_path(line2));
3647 }
3649 static const enum sort_field tree_sort_fields[] = {
3650 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3651 };
3652 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3654 static int
3655 tree_compare(const void *l1, const void *l2)
3656 {
3657 const struct line *line1 = (const struct line *) l1;
3658 const struct line *line2 = (const struct line *) l2;
3659 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3660 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3662 if (line1->type == LINE_TREE_HEAD)
3663 return -1;
3664 if (line2->type == LINE_TREE_HEAD)
3665 return 1;
3667 switch (get_sort_field(tree_sort_state)) {
3668 case ORDERBY_DATE:
3669 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3671 case ORDERBY_AUTHOR:
3672 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3674 case ORDERBY_NAME:
3675 default:
3676 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3677 }
3678 }
3681 static struct line *
3682 tree_entry(struct view *view, enum line_type type, const char *path,
3683 const char *mode, const char *id)
3684 {
3685 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3686 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3688 if (!entry || !line) {
3689 free(entry);
3690 return NULL;
3691 }
3693 strncpy(entry->name, path, strlen(path));
3694 if (mode)
3695 entry->mode = strtoul(mode, NULL, 8);
3696 if (id)
3697 string_copy_rev(entry->id, id);
3699 return line;
3700 }
3702 static bool
3703 tree_read_date(struct view *view, char *text, bool *read_date)
3704 {
3705 static const char *author_name;
3706 static struct time author_time;
3708 if (!text && *read_date) {
3709 *read_date = FALSE;
3710 return TRUE;
3712 } else if (!text) {
3713 /* Find next entry to process */
3714 const char *log_file[] = {
3715 "git", "log", "--no-color", "--pretty=raw",
3716 "--cc", "--raw", view->id, "--", "%(directory)", NULL
3717 };
3719 if (!view->lines) {
3720 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3721 report("Tree is empty");
3722 return TRUE;
3723 }
3725 if (!begin_update(view, opt_cdup, log_file, OPEN_EXTRA)) {
3726 report("Failed to load tree data");
3727 return TRUE;
3728 }
3730 *read_date = TRUE;
3731 return FALSE;
3733 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3734 parse_author_line(text + STRING_SIZE("author "),
3735 &author_name, &author_time);
3737 } else if (*text == ':') {
3738 char *pos;
3739 size_t annotated = 1;
3740 size_t i;
3742 pos = strchr(text, '\t');
3743 if (!pos)
3744 return TRUE;
3745 text = pos + 1;
3746 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3747 text += strlen(opt_path);
3748 pos = strchr(text, '/');
3749 if (pos)
3750 *pos = 0;
3752 for (i = 1; i < view->lines; i++) {
3753 struct line *line = &view->line[i];
3754 struct tree_entry *entry = line->data;
3756 annotated += !!entry->author;
3757 if (entry->author || strcmp(entry->name, text))
3758 continue;
3760 entry->author = author_name;
3761 entry->time = author_time;
3762 line->dirty = 1;
3763 break;
3764 }
3766 if (annotated == view->lines)
3767 io_kill(view->pipe);
3768 }
3769 return TRUE;
3770 }
3772 static bool
3773 tree_read(struct view *view, char *text)
3774 {
3775 static bool read_date = FALSE;
3776 struct tree_entry *data;
3777 struct line *entry, *line;
3778 enum line_type type;
3779 size_t textlen = text ? strlen(text) : 0;
3780 char *path = text + SIZEOF_TREE_ATTR;
3782 if (read_date || !text)
3783 return tree_read_date(view, text, &read_date);
3785 if (textlen <= SIZEOF_TREE_ATTR)
3786 return FALSE;
3787 if (view->lines == 0 &&
3788 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3789 return FALSE;
3791 /* Strip the path part ... */
3792 if (*opt_path) {
3793 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3794 size_t striplen = strlen(opt_path);
3796 if (pathlen > striplen)
3797 memmove(path, path + striplen,
3798 pathlen - striplen + 1);
3800 /* Insert "link" to parent directory. */
3801 if (view->lines == 1 &&
3802 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3803 return FALSE;
3804 }
3806 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3807 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3808 if (!entry)
3809 return FALSE;
3810 data = entry->data;
3812 /* Skip "Directory ..." and ".." line. */
3813 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3814 if (tree_compare_entry(line, entry) <= 0)
3815 continue;
3817 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3819 line->data = data;
3820 line->type = type;
3821 for (; line <= entry; line++)
3822 line->dirty = line->cleareol = 1;
3823 return TRUE;
3824 }
3826 if (tree_lineno > view->lineno) {
3827 view->lineno = tree_lineno;
3828 tree_lineno = 0;
3829 }
3831 return TRUE;
3832 }
3834 static bool
3835 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3836 {
3837 struct tree_entry *entry = line->data;
3839 if (line->type == LINE_TREE_HEAD) {
3840 if (draw_text(view, line->type, "Directory path /"))
3841 return TRUE;
3842 } else {
3843 if (draw_mode(view, entry->mode))
3844 return TRUE;
3846 if (draw_author(view, entry->author))
3847 return TRUE;
3849 if (draw_date(view, &entry->time))
3850 return TRUE;
3851 }
3853 draw_text(view, line->type, entry->name);
3854 return TRUE;
3855 }
3857 static void
3858 open_blob_editor(const char *id)
3859 {
3860 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3861 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3862 int fd = mkstemp(file);
3864 if (fd == -1)
3865 report("Failed to create temporary file");
3866 else if (!io_run_append(blob_argv, fd))
3867 report("Failed to save blob data to file");
3868 else
3869 open_editor(file);
3870 if (fd != -1)
3871 unlink(file);
3872 }
3874 static enum request
3875 tree_request(struct view *view, enum request request, struct line *line)
3876 {
3877 enum open_flags flags;
3878 struct tree_entry *entry = line->data;
3880 switch (request) {
3881 case REQ_VIEW_BLAME:
3882 if (line->type != LINE_TREE_FILE) {
3883 report("Blame only supported for files");
3884 return REQ_NONE;
3885 }
3887 string_copy(opt_ref, view->vid);
3888 return request;
3890 case REQ_EDIT:
3891 if (line->type != LINE_TREE_FILE) {
3892 report("Edit only supported for files");
3893 } else if (!is_head_commit(view->vid)) {
3894 open_blob_editor(entry->id);
3895 } else {
3896 open_editor(opt_file);
3897 }
3898 return REQ_NONE;
3900 case REQ_TOGGLE_SORT_FIELD:
3901 case REQ_TOGGLE_SORT_ORDER:
3902 sort_view(view, request, &tree_sort_state, tree_compare);
3903 return REQ_NONE;
3905 case REQ_PARENT:
3906 if (!*opt_path) {
3907 /* quit view if at top of tree */
3908 return REQ_VIEW_CLOSE;
3909 }
3910 /* fake 'cd ..' */
3911 line = &view->line[1];
3912 break;
3914 case REQ_ENTER:
3915 break;
3917 default:
3918 return request;
3919 }
3921 /* Cleanup the stack if the tree view is at a different tree. */
3922 while (!*opt_path && tree_stack)
3923 pop_tree_stack_entry();
3925 switch (line->type) {
3926 case LINE_TREE_DIR:
3927 /* Depending on whether it is a subdirectory or parent link
3928 * mangle the path buffer. */
3929 if (line == &view->line[1] && *opt_path) {
3930 pop_tree_stack_entry();
3932 } else {
3933 const char *basename = tree_path(line);
3935 push_tree_stack_entry(basename, view->lineno);
3936 }
3938 /* Trees and subtrees share the same ID, so they are not not
3939 * unique like blobs. */
3940 flags = OPEN_RELOAD;
3941 request = REQ_VIEW_TREE;
3942 break;
3944 case LINE_TREE_FILE:
3945 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3946 request = REQ_VIEW_BLOB;
3947 break;
3949 default:
3950 return REQ_NONE;
3951 }
3953 open_view(view, request, flags);
3954 if (request == REQ_VIEW_TREE)
3955 view->lineno = tree_lineno;
3957 return REQ_NONE;
3958 }
3960 static bool
3961 tree_grep(struct view *view, struct line *line)
3962 {
3963 struct tree_entry *entry = line->data;
3964 const char *text[] = {
3965 entry->name,
3966 opt_author ? entry->author : "",
3967 mkdate(&entry->time, opt_date),
3968 NULL
3969 };
3971 return grep_text(view, text);
3972 }
3974 static void
3975 tree_select(struct view *view, struct line *line)
3976 {
3977 struct tree_entry *entry = line->data;
3979 if (line->type == LINE_TREE_FILE) {
3980 string_copy_rev(ref_blob, entry->id);
3981 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3983 } else if (line->type != LINE_TREE_DIR) {
3984 return;
3985 }
3987 string_copy_rev(view->ref, entry->id);
3988 }
3990 static bool
3991 tree_open(struct view *view, enum open_flags flags)
3992 {
3993 static const char *tree_argv[] = {
3994 "git", "ls-tree", "%(commit)", "%(directory)", NULL
3995 };
3997 if (view->lines == 0 && opt_prefix[0]) {
3998 char *pos = opt_prefix;
4000 while (pos && *pos) {
4001 char *end = strchr(pos, '/');
4003 if (end)
4004 *end = 0;
4005 push_tree_stack_entry(pos, 0);
4006 pos = end;
4007 if (end) {
4008 *end = '/';
4009 pos++;
4010 }
4011 }
4013 } else if (strcmp(view->vid, view->id)) {
4014 opt_path[0] = 0;
4015 }
4017 return begin_update(view, opt_cdup, tree_argv, flags);
4018 }
4020 static struct view_ops tree_ops = {
4021 "file",
4022 tree_open,
4023 tree_read,
4024 tree_draw,
4025 tree_request,
4026 tree_grep,
4027 tree_select,
4028 };
4030 static bool
4031 blob_open(struct view *view, enum open_flags flags)
4032 {
4033 static const char *blob_argv[] = {
4034 "git", "cat-file", "blob", "%(blob)", NULL
4035 };
4037 return begin_update(view, NULL, blob_argv, flags);
4038 }
4040 static bool
4041 blob_read(struct view *view, char *line)
4042 {
4043 if (!line)
4044 return TRUE;
4045 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4046 }
4048 static enum request
4049 blob_request(struct view *view, enum request request, struct line *line)
4050 {
4051 switch (request) {
4052 case REQ_EDIT:
4053 open_blob_editor(view->vid);
4054 return REQ_NONE;
4055 default:
4056 return pager_request(view, request, line);
4057 }
4058 }
4060 static struct view_ops blob_ops = {
4061 "line",
4062 blob_open,
4063 blob_read,
4064 pager_draw,
4065 blob_request,
4066 pager_grep,
4067 pager_select,
4068 };
4070 /*
4071 * Blame backend
4072 *
4073 * Loading the blame view is a two phase job:
4074 *
4075 * 1. File content is read either using opt_file from the
4076 * filesystem or using git-cat-file.
4077 * 2. Then blame information is incrementally added by
4078 * reading output from git-blame.
4079 */
4081 struct blame_commit {
4082 char id[SIZEOF_REV]; /* SHA1 ID. */
4083 char title[128]; /* First line of the commit message. */
4084 const char *author; /* Author of the commit. */
4085 struct time time; /* Date from the author ident. */
4086 char filename[128]; /* Name of file. */
4087 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4088 char parent_filename[128]; /* Parent/previous name of file. */
4089 };
4091 struct blame {
4092 struct blame_commit *commit;
4093 unsigned long lineno;
4094 char text[1];
4095 };
4097 static bool
4098 blame_open(struct view *view, enum open_flags flags)
4099 {
4100 const char *file_argv[] = { opt_cdup, opt_file , NULL };
4101 char path[SIZEOF_STR];
4102 size_t i;
4104 if (!view->prev && *opt_prefix) {
4105 string_copy(path, opt_file);
4106 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4107 return FALSE;
4108 }
4110 if (*opt_ref || !begin_update(view, opt_cdup, file_argv, flags)) {
4111 const char *blame_cat_file_argv[] = {
4112 "git", "cat-file", "blob", path, NULL
4113 };
4115 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4116 !begin_update(view, opt_cdup, blame_cat_file_argv, flags))
4117 return FALSE;
4118 }
4120 /* First pass: remove multiple references to the same commit. */
4121 for (i = 0; i < view->lines; i++) {
4122 struct blame *blame = view->line[i].data;
4124 if (blame->commit && blame->commit->id[0])
4125 blame->commit->id[0] = 0;
4126 else
4127 blame->commit = NULL;
4128 }
4130 /* Second pass: free existing references. */
4131 for (i = 0; i < view->lines; i++) {
4132 struct blame *blame = view->line[i].data;
4134 if (blame->commit)
4135 free(blame->commit);
4136 }
4138 string_format(view->vid, "%s:%s", opt_ref, opt_file);
4139 string_format(view->ref, "%s ...", opt_file);
4141 return TRUE;
4142 }
4144 static struct blame_commit *
4145 get_blame_commit(struct view *view, const char *id)
4146 {
4147 size_t i;
4149 for (i = 0; i < view->lines; i++) {
4150 struct blame *blame = view->line[i].data;
4152 if (!blame->commit)
4153 continue;
4155 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4156 return blame->commit;
4157 }
4159 {
4160 struct blame_commit *commit = calloc(1, sizeof(*commit));
4162 if (commit)
4163 string_ncopy(commit->id, id, SIZEOF_REV);
4164 return commit;
4165 }
4166 }
4168 static bool
4169 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4170 {
4171 const char *pos = *posref;
4173 *posref = NULL;
4174 pos = strchr(pos + 1, ' ');
4175 if (!pos || !isdigit(pos[1]))
4176 return FALSE;
4177 *number = atoi(pos + 1);
4178 if (*number < min || *number > max)
4179 return FALSE;
4181 *posref = pos;
4182 return TRUE;
4183 }
4185 static struct blame_commit *
4186 parse_blame_commit(struct view *view, const char *text, int *blamed)
4187 {
4188 struct blame_commit *commit;
4189 struct blame *blame;
4190 const char *pos = text + SIZEOF_REV - 2;
4191 size_t orig_lineno = 0;
4192 size_t lineno;
4193 size_t group;
4195 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4196 return NULL;
4198 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4199 !parse_number(&pos, &lineno, 1, view->lines) ||
4200 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4201 return NULL;
4203 commit = get_blame_commit(view, text);
4204 if (!commit)
4205 return NULL;
4207 *blamed += group;
4208 while (group--) {
4209 struct line *line = &view->line[lineno + group - 1];
4211 blame = line->data;
4212 blame->commit = commit;
4213 blame->lineno = orig_lineno + group - 1;
4214 line->dirty = 1;
4215 }
4217 return commit;
4218 }
4220 static bool
4221 blame_read_file(struct view *view, const char *line, bool *read_file)
4222 {
4223 if (!line) {
4224 const char *blame_argv[] = {
4225 "git", "blame", "%(blameargs)", "--incremental",
4226 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4227 };
4229 if (view->lines == 0 && !view->prev)
4230 die("No blame exist for %s", view->vid);
4232 if (view->lines == 0 || !begin_update(view, opt_cdup, blame_argv, OPEN_EXTRA)) {
4233 report("Failed to load blame data");
4234 return TRUE;
4235 }
4237 *read_file = FALSE;
4238 return FALSE;
4240 } else {
4241 size_t linelen = strlen(line);
4242 struct blame *blame = malloc(sizeof(*blame) + linelen);
4244 if (!blame)
4245 return FALSE;
4247 blame->commit = NULL;
4248 strncpy(blame->text, line, linelen);
4249 blame->text[linelen] = 0;
4250 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4251 }
4252 }
4254 static bool
4255 match_blame_header(const char *name, char **line)
4256 {
4257 size_t namelen = strlen(name);
4258 bool matched = !strncmp(name, *line, namelen);
4260 if (matched)
4261 *line += namelen;
4263 return matched;
4264 }
4266 static bool
4267 blame_read(struct view *view, char *line)
4268 {
4269 static struct blame_commit *commit = NULL;
4270 static int blamed = 0;
4271 static bool read_file = TRUE;
4273 if (read_file)
4274 return blame_read_file(view, line, &read_file);
4276 if (!line) {
4277 /* Reset all! */
4278 commit = NULL;
4279 blamed = 0;
4280 read_file = TRUE;
4281 string_format(view->ref, "%s", view->vid);
4282 if (view_is_displayed(view)) {
4283 update_view_title(view);
4284 redraw_view_from(view, 0);
4285 }
4286 return TRUE;
4287 }
4289 if (!commit) {
4290 commit = parse_blame_commit(view, line, &blamed);
4291 string_format(view->ref, "%s %2d%%", view->vid,
4292 view->lines ? blamed * 100 / view->lines : 0);
4294 } else if (match_blame_header("author ", &line)) {
4295 commit->author = get_author(line);
4297 } else if (match_blame_header("author-time ", &line)) {
4298 parse_timesec(&commit->time, line);
4300 } else if (match_blame_header("author-tz ", &line)) {
4301 parse_timezone(&commit->time, line);
4303 } else if (match_blame_header("summary ", &line)) {
4304 string_ncopy(commit->title, line, strlen(line));
4306 } else if (match_blame_header("previous ", &line)) {
4307 if (strlen(line) <= SIZEOF_REV)
4308 return FALSE;
4309 string_copy_rev(commit->parent_id, line);
4310 line += SIZEOF_REV;
4311 string_ncopy(commit->parent_filename, line, strlen(line));
4313 } else if (match_blame_header("filename ", &line)) {
4314 string_ncopy(commit->filename, line, strlen(line));
4315 commit = NULL;
4316 }
4318 return TRUE;
4319 }
4321 static bool
4322 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4323 {
4324 struct blame *blame = line->data;
4325 struct time *time = NULL;
4326 const char *id = NULL, *author = NULL;
4328 if (blame->commit && *blame->commit->filename) {
4329 id = blame->commit->id;
4330 author = blame->commit->author;
4331 time = &blame->commit->time;
4332 }
4334 if (draw_date(view, time))
4335 return TRUE;
4337 if (draw_author(view, author))
4338 return TRUE;
4340 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4341 return TRUE;
4343 if (draw_lineno(view, lineno))
4344 return TRUE;
4346 draw_text(view, LINE_DEFAULT, blame->text);
4347 return TRUE;
4348 }
4350 static bool
4351 check_blame_commit(struct blame *blame, bool check_null_id)
4352 {
4353 if (!blame->commit)
4354 report("Commit data not loaded yet");
4355 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4356 report("No commit exist for the selected line");
4357 else
4358 return TRUE;
4359 return FALSE;
4360 }
4362 static void
4363 setup_blame_parent_line(struct view *view, struct blame *blame)
4364 {
4365 char from[SIZEOF_REF + SIZEOF_STR];
4366 char to[SIZEOF_REF + SIZEOF_STR];
4367 const char *diff_tree_argv[] = {
4368 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4369 "-U0", from, to, "--", NULL
4370 };
4371 struct io io;
4372 int parent_lineno = -1;
4373 int blamed_lineno = -1;
4374 char *line;
4376 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4377 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4378 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4379 return;
4381 while ((line = io_get(&io, '\n', TRUE))) {
4382 if (*line == '@') {
4383 char *pos = strchr(line, '+');
4385 parent_lineno = atoi(line + 4);
4386 if (pos)
4387 blamed_lineno = atoi(pos + 1);
4389 } else if (*line == '+' && parent_lineno != -1) {
4390 if (blame->lineno == blamed_lineno - 1 &&
4391 !strcmp(blame->text, line + 1)) {
4392 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4393 break;
4394 }
4395 blamed_lineno++;
4396 }
4397 }
4399 io_done(&io);
4400 }
4402 static enum request
4403 blame_request(struct view *view, enum request request, struct line *line)
4404 {
4405 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4406 struct blame *blame = line->data;
4408 switch (request) {
4409 case REQ_VIEW_BLAME:
4410 if (check_blame_commit(blame, TRUE)) {
4411 string_copy(opt_ref, blame->commit->id);
4412 string_copy(opt_file, blame->commit->filename);
4413 if (blame->lineno)
4414 view->lineno = blame->lineno;
4415 refresh_view(view);
4416 }
4417 break;
4419 case REQ_PARENT:
4420 if (!check_blame_commit(blame, TRUE))
4421 break;
4422 if (!*blame->commit->parent_id) {
4423 report("The selected commit has no parents");
4424 } else {
4425 string_copy_rev(opt_ref, blame->commit->parent_id);
4426 string_copy(opt_file, blame->commit->parent_filename);
4427 setup_blame_parent_line(view, blame);
4428 refresh_view(view);
4429 }
4430 break;
4432 case REQ_ENTER:
4433 if (!check_blame_commit(blame, FALSE))
4434 break;
4436 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4437 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4438 break;
4440 if (!strcmp(blame->commit->id, NULL_ID)) {
4441 struct view *diff = VIEW(REQ_VIEW_DIFF);
4442 const char *diff_index_argv[] = {
4443 "git", "diff-index", "--root", "--patch-with-stat",
4444 "-C", "-M", "HEAD", "--", view->vid, NULL
4445 };
4447 if (!*blame->commit->parent_id) {
4448 diff_index_argv[1] = "diff";
4449 diff_index_argv[2] = "--no-color";
4450 diff_index_argv[6] = "--";
4451 diff_index_argv[7] = "/dev/null";
4452 }
4454 open_argv(view, diff, diff_index_argv, NULL, flags);
4455 } else {
4456 open_view(view, REQ_VIEW_DIFF, flags);
4457 }
4458 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4459 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4460 break;
4462 default:
4463 return request;
4464 }
4466 return REQ_NONE;
4467 }
4469 static bool
4470 blame_grep(struct view *view, struct line *line)
4471 {
4472 struct blame *blame = line->data;
4473 struct blame_commit *commit = blame->commit;
4474 const char *text[] = {
4475 blame->text,
4476 commit ? commit->title : "",
4477 commit ? commit->id : "",
4478 commit && opt_author ? commit->author : "",
4479 commit ? mkdate(&commit->time, opt_date) : "",
4480 NULL
4481 };
4483 return grep_text(view, text);
4484 }
4486 static void
4487 blame_select(struct view *view, struct line *line)
4488 {
4489 struct blame *blame = line->data;
4490 struct blame_commit *commit = blame->commit;
4492 if (!commit)
4493 return;
4495 if (!strcmp(commit->id, NULL_ID))
4496 string_ncopy(ref_commit, "HEAD", 4);
4497 else
4498 string_copy_rev(ref_commit, commit->id);
4499 }
4501 static struct view_ops blame_ops = {
4502 "line",
4503 blame_open,
4504 blame_read,
4505 blame_draw,
4506 blame_request,
4507 blame_grep,
4508 blame_select,
4509 };
4511 /*
4512 * Branch backend
4513 */
4515 struct branch {
4516 const char *author; /* Author of the last commit. */
4517 struct time time; /* Date of the last activity. */
4518 const struct ref *ref; /* Name and commit ID information. */
4519 };
4521 static const struct ref branch_all;
4523 static const enum sort_field branch_sort_fields[] = {
4524 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4525 };
4526 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4528 static int
4529 branch_compare(const void *l1, const void *l2)
4530 {
4531 const struct branch *branch1 = ((const struct line *) l1)->data;
4532 const struct branch *branch2 = ((const struct line *) l2)->data;
4534 switch (get_sort_field(branch_sort_state)) {
4535 case ORDERBY_DATE:
4536 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4538 case ORDERBY_AUTHOR:
4539 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4541 case ORDERBY_NAME:
4542 default:
4543 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4544 }
4545 }
4547 static bool
4548 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4549 {
4550 struct branch *branch = line->data;
4551 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4553 if (draw_date(view, &branch->time))
4554 return TRUE;
4556 if (draw_author(view, branch->author))
4557 return TRUE;
4559 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4560 return TRUE;
4561 }
4563 static enum request
4564 branch_request(struct view *view, enum request request, struct line *line)
4565 {
4566 struct branch *branch = line->data;
4568 switch (request) {
4569 case REQ_REFRESH:
4570 load_refs();
4571 refresh_view(view);
4572 return REQ_NONE;
4574 case REQ_TOGGLE_SORT_FIELD:
4575 case REQ_TOGGLE_SORT_ORDER:
4576 sort_view(view, request, &branch_sort_state, branch_compare);
4577 return REQ_NONE;
4579 case REQ_ENTER:
4580 {
4581 const struct ref *ref = branch->ref;
4582 const char *all_branches_argv[] = {
4583 "git", "log", "--no-color", "--pretty=raw", "--parents",
4584 "--topo-order",
4585 ref == &branch_all ? "--all" : ref->name, NULL
4586 };
4587 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4589 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
4590 return REQ_NONE;
4591 }
4592 default:
4593 return request;
4594 }
4595 }
4597 static bool
4598 branch_read(struct view *view, char *line)
4599 {
4600 static char id[SIZEOF_REV];
4601 struct branch *reference;
4602 size_t i;
4604 if (!line)
4605 return TRUE;
4607 switch (get_line_type(line)) {
4608 case LINE_COMMIT:
4609 string_copy_rev(id, line + STRING_SIZE("commit "));
4610 return TRUE;
4612 case LINE_AUTHOR:
4613 for (i = 0, reference = NULL; i < view->lines; i++) {
4614 struct branch *branch = view->line[i].data;
4616 if (strcmp(branch->ref->id, id))
4617 continue;
4619 view->line[i].dirty = TRUE;
4620 if (reference) {
4621 branch->author = reference->author;
4622 branch->time = reference->time;
4623 continue;
4624 }
4626 parse_author_line(line + STRING_SIZE("author "),
4627 &branch->author, &branch->time);
4628 reference = branch;
4629 }
4630 return TRUE;
4632 default:
4633 return TRUE;
4634 }
4636 }
4638 static bool
4639 branch_open_visitor(void *data, const struct ref *ref)
4640 {
4641 struct view *view = data;
4642 struct branch *branch;
4644 if (ref->tag || ref->ltag || ref->remote)
4645 return TRUE;
4647 branch = calloc(1, sizeof(*branch));
4648 if (!branch)
4649 return FALSE;
4651 branch->ref = ref;
4652 return !!add_line_data(view, branch, LINE_DEFAULT);
4653 }
4655 static bool
4656 branch_open(struct view *view, enum open_flags flags)
4657 {
4658 const char *branch_log[] = {
4659 "git", "log", "--no-color", "--pretty=raw",
4660 "--simplify-by-decoration", "--all", NULL
4661 };
4663 if (!begin_update(view, NULL, branch_log, flags)) {
4664 report("Failed to load branch data");
4665 return TRUE;
4666 }
4668 branch_open_visitor(view, &branch_all);
4669 foreach_ref(branch_open_visitor, view);
4670 view->p_restore = TRUE;
4672 return TRUE;
4673 }
4675 static bool
4676 branch_grep(struct view *view, struct line *line)
4677 {
4678 struct branch *branch = line->data;
4679 const char *text[] = {
4680 branch->ref->name,
4681 branch->author,
4682 NULL
4683 };
4685 return grep_text(view, text);
4686 }
4688 static void
4689 branch_select(struct view *view, struct line *line)
4690 {
4691 struct branch *branch = line->data;
4693 string_copy_rev(view->ref, branch->ref->id);
4694 string_copy_rev(ref_commit, branch->ref->id);
4695 string_copy_rev(ref_head, branch->ref->id);
4696 string_copy_rev(ref_branch, branch->ref->name);
4697 }
4699 static struct view_ops branch_ops = {
4700 "branch",
4701 branch_open,
4702 branch_read,
4703 branch_draw,
4704 branch_request,
4705 branch_grep,
4706 branch_select,
4707 };
4709 /*
4710 * Status backend
4711 */
4713 struct status {
4714 char status;
4715 struct {
4716 mode_t mode;
4717 char rev[SIZEOF_REV];
4718 char name[SIZEOF_STR];
4719 } old;
4720 struct {
4721 mode_t mode;
4722 char rev[SIZEOF_REV];
4723 char name[SIZEOF_STR];
4724 } new;
4725 };
4727 static char status_onbranch[SIZEOF_STR];
4728 static struct status stage_status;
4729 static enum line_type stage_line_type;
4730 static size_t stage_chunks;
4731 static int *stage_chunk;
4733 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4735 /* This should work even for the "On branch" line. */
4736 static inline bool
4737 status_has_none(struct view *view, struct line *line)
4738 {
4739 return line < view->line + view->lines && !line[1].data;
4740 }
4742 /* Get fields from the diff line:
4743 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4744 */
4745 static inline bool
4746 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4747 {
4748 const char *old_mode = buf + 1;
4749 const char *new_mode = buf + 8;
4750 const char *old_rev = buf + 15;
4751 const char *new_rev = buf + 56;
4752 const char *status = buf + 97;
4754 if (bufsize < 98 ||
4755 old_mode[-1] != ':' ||
4756 new_mode[-1] != ' ' ||
4757 old_rev[-1] != ' ' ||
4758 new_rev[-1] != ' ' ||
4759 status[-1] != ' ')
4760 return FALSE;
4762 file->status = *status;
4764 string_copy_rev(file->old.rev, old_rev);
4765 string_copy_rev(file->new.rev, new_rev);
4767 file->old.mode = strtoul(old_mode, NULL, 8);
4768 file->new.mode = strtoul(new_mode, NULL, 8);
4770 file->old.name[0] = file->new.name[0] = 0;
4772 return TRUE;
4773 }
4775 static bool
4776 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4777 {
4778 struct status *unmerged = NULL;
4779 char *buf;
4780 struct io io;
4782 if (!io_run(&io, IO_RD, opt_cdup, argv))
4783 return FALSE;
4785 add_line_data(view, NULL, type);
4787 while ((buf = io_get(&io, 0, TRUE))) {
4788 struct status *file = unmerged;
4790 if (!file) {
4791 file = calloc(1, sizeof(*file));
4792 if (!file || !add_line_data(view, file, type))
4793 goto error_out;
4794 }
4796 /* Parse diff info part. */
4797 if (status) {
4798 file->status = status;
4799 if (status == 'A')
4800 string_copy(file->old.rev, NULL_ID);
4802 } else if (!file->status || file == unmerged) {
4803 if (!status_get_diff(file, buf, strlen(buf)))
4804 goto error_out;
4806 buf = io_get(&io, 0, TRUE);
4807 if (!buf)
4808 break;
4810 /* Collapse all modified entries that follow an
4811 * associated unmerged entry. */
4812 if (unmerged == file) {
4813 unmerged->status = 'U';
4814 unmerged = NULL;
4815 } else if (file->status == 'U') {
4816 unmerged = file;
4817 }
4818 }
4820 /* Grab the old name for rename/copy. */
4821 if (!*file->old.name &&
4822 (file->status == 'R' || file->status == 'C')) {
4823 string_ncopy(file->old.name, buf, strlen(buf));
4825 buf = io_get(&io, 0, TRUE);
4826 if (!buf)
4827 break;
4828 }
4830 /* git-ls-files just delivers a NUL separated list of
4831 * file names similar to the second half of the
4832 * git-diff-* output. */
4833 string_ncopy(file->new.name, buf, strlen(buf));
4834 if (!*file->old.name)
4835 string_copy(file->old.name, file->new.name);
4836 file = NULL;
4837 }
4839 if (io_error(&io)) {
4840 error_out:
4841 io_done(&io);
4842 return FALSE;
4843 }
4845 if (!view->line[view->lines - 1].data)
4846 add_line_data(view, NULL, LINE_STAT_NONE);
4848 io_done(&io);
4849 return TRUE;
4850 }
4852 /* Don't show unmerged entries in the staged section. */
4853 static const char *status_diff_index_argv[] = {
4854 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4855 "--cached", "-M", "HEAD", NULL
4856 };
4858 static const char *status_diff_files_argv[] = {
4859 "git", "diff-files", "-z", NULL
4860 };
4862 static const char *status_list_other_argv[] = {
4863 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4864 };
4866 static const char *status_list_no_head_argv[] = {
4867 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4868 };
4870 static const char *update_index_argv[] = {
4871 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4872 };
4874 /* Restore the previous line number to stay in the context or select a
4875 * line with something that can be updated. */
4876 static void
4877 status_restore(struct view *view)
4878 {
4879 if (view->p_lineno >= view->lines)
4880 view->p_lineno = view->lines - 1;
4881 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4882 view->p_lineno++;
4883 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4884 view->p_lineno--;
4886 /* If the above fails, always skip the "On branch" line. */
4887 if (view->p_lineno < view->lines)
4888 view->lineno = view->p_lineno;
4889 else
4890 view->lineno = 1;
4892 if (view->lineno < view->offset)
4893 view->offset = view->lineno;
4894 else if (view->offset + view->height <= view->lineno)
4895 view->offset = view->lineno - view->height + 1;
4897 view->p_restore = FALSE;
4898 }
4900 static void
4901 status_update_onbranch(void)
4902 {
4903 static const char *paths[][2] = {
4904 { "rebase-apply/rebasing", "Rebasing" },
4905 { "rebase-apply/applying", "Applying mailbox" },
4906 { "rebase-apply/", "Rebasing mailbox" },
4907 { "rebase-merge/interactive", "Interactive rebase" },
4908 { "rebase-merge/", "Rebase merge" },
4909 { "MERGE_HEAD", "Merging" },
4910 { "BISECT_LOG", "Bisecting" },
4911 { "HEAD", "On branch" },
4912 };
4913 char buf[SIZEOF_STR];
4914 struct stat stat;
4915 int i;
4917 if (is_initial_commit()) {
4918 string_copy(status_onbranch, "Initial commit");
4919 return;
4920 }
4922 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4923 char *head = opt_head;
4925 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4926 lstat(buf, &stat) < 0)
4927 continue;
4929 if (!*opt_head) {
4930 struct io io;
4932 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4933 io_read_buf(&io, buf, sizeof(buf))) {
4934 head = buf;
4935 if (!prefixcmp(head, "refs/heads/"))
4936 head += STRING_SIZE("refs/heads/");
4937 }
4938 }
4940 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4941 string_copy(status_onbranch, opt_head);
4942 return;
4943 }
4945 string_copy(status_onbranch, "Not currently on any branch");
4946 }
4948 /* First parse staged info using git-diff-index(1), then parse unstaged
4949 * info using git-diff-files(1), and finally untracked files using
4950 * git-ls-files(1). */
4951 static bool
4952 status_open(struct view *view, enum open_flags flags)
4953 {
4954 reset_view(view);
4956 add_line_data(view, NULL, LINE_STAT_HEAD);
4957 status_update_onbranch();
4959 io_run_bg(update_index_argv);
4961 if (is_initial_commit()) {
4962 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4963 return FALSE;
4964 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4965 return FALSE;
4966 }
4968 if (!opt_untracked_dirs_content)
4969 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
4971 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4972 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4973 return FALSE;
4975 /* Restore the exact position or use the specialized restore
4976 * mode? */
4977 if (!view->p_restore)
4978 status_restore(view);
4979 return TRUE;
4980 }
4982 static bool
4983 status_draw(struct view *view, struct line *line, unsigned int lineno)
4984 {
4985 struct status *status = line->data;
4986 enum line_type type;
4987 const char *text;
4989 if (!status) {
4990 switch (line->type) {
4991 case LINE_STAT_STAGED:
4992 type = LINE_STAT_SECTION;
4993 text = "Changes to be committed:";
4994 break;
4996 case LINE_STAT_UNSTAGED:
4997 type = LINE_STAT_SECTION;
4998 text = "Changed but not updated:";
4999 break;
5001 case LINE_STAT_UNTRACKED:
5002 type = LINE_STAT_SECTION;
5003 text = "Untracked files:";
5004 break;
5006 case LINE_STAT_NONE:
5007 type = LINE_DEFAULT;
5008 text = " (no files)";
5009 break;
5011 case LINE_STAT_HEAD:
5012 type = LINE_STAT_HEAD;
5013 text = status_onbranch;
5014 break;
5016 default:
5017 return FALSE;
5018 }
5019 } else {
5020 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5022 buf[0] = status->status;
5023 if (draw_text(view, line->type, buf))
5024 return TRUE;
5025 type = LINE_DEFAULT;
5026 text = status->new.name;
5027 }
5029 draw_text(view, type, text);
5030 return TRUE;
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 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
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 open_argv(view, stage, no_head_diff_argv, opt_cdup, flags);
5060 } else {
5061 const char *index_show_argv[] = {
5062 "git", "diff-index", "--root", "--patch-with-stat",
5063 "-C", "-M", "--cached", "HEAD", "--",
5064 oldpath, newpath, NULL
5065 };
5067 open_argv(view, stage, index_show_argv, opt_cdup, flags);
5068 }
5070 if (status)
5071 info = "Staged changes to %s";
5072 else
5073 info = "Staged changes";
5074 break;
5076 case LINE_STAT_UNSTAGED:
5077 {
5078 const char *files_show_argv[] = {
5079 "git", "diff-files", "--root", "--patch-with-stat",
5080 "-C", "-M", "--", oldpath, newpath, NULL
5081 };
5083 open_argv(view, stage, files_show_argv, opt_cdup, flags);
5084 if (status)
5085 info = "Unstaged changes to %s";
5086 else
5087 info = "Unstaged changes";
5088 break;
5089 }
5090 case LINE_STAT_UNTRACKED:
5091 if (!newpath) {
5092 report("No file to show");
5093 return REQ_NONE;
5094 }
5096 if (!suffixcmp(status->new.name, -1, "/")) {
5097 report("Cannot display a directory");
5098 return REQ_NONE;
5099 }
5101 open_file(view, stage, newpath, flags);
5102 info = "Untracked file %s";
5103 break;
5105 case LINE_STAT_HEAD:
5106 return REQ_NONE;
5108 default:
5109 die("line type %d not handled in switch", line->type);
5110 }
5112 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5113 if (status) {
5114 stage_status = *status;
5115 } else {
5116 memset(&stage_status, 0, sizeof(stage_status));
5117 }
5119 stage_line_type = line->type;
5120 stage_chunks = 0;
5121 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5122 }
5124 return REQ_NONE;
5125 }
5127 static bool
5128 status_exists(struct status *status, enum line_type type)
5129 {
5130 struct view *view = VIEW(REQ_VIEW_STATUS);
5131 unsigned long lineno;
5133 for (lineno = 0; lineno < view->lines; lineno++) {
5134 struct line *line = &view->line[lineno];
5135 struct status *pos = line->data;
5137 if (line->type != type)
5138 continue;
5139 if (!pos && (!status || !status->status) && line[1].data) {
5140 select_view_line(view, lineno);
5141 return TRUE;
5142 }
5143 if (pos && !strcmp(status->new.name, pos->new.name)) {
5144 select_view_line(view, lineno);
5145 return TRUE;
5146 }
5147 }
5149 return FALSE;
5150 }
5153 static bool
5154 status_update_prepare(struct io *io, enum line_type type)
5155 {
5156 const char *staged_argv[] = {
5157 "git", "update-index", "-z", "--index-info", NULL
5158 };
5159 const char *others_argv[] = {
5160 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5161 };
5163 switch (type) {
5164 case LINE_STAT_STAGED:
5165 return io_run(io, IO_WR, opt_cdup, staged_argv);
5167 case LINE_STAT_UNSTAGED:
5168 case LINE_STAT_UNTRACKED:
5169 return io_run(io, IO_WR, opt_cdup, others_argv);
5171 default:
5172 die("line type %d not handled in switch", type);
5173 return FALSE;
5174 }
5175 }
5177 static bool
5178 status_update_write(struct io *io, struct status *status, enum line_type type)
5179 {
5180 char buf[SIZEOF_STR];
5181 size_t bufsize = 0;
5183 switch (type) {
5184 case LINE_STAT_STAGED:
5185 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5186 status->old.mode,
5187 status->old.rev,
5188 status->old.name, 0))
5189 return FALSE;
5190 break;
5192 case LINE_STAT_UNSTAGED:
5193 case LINE_STAT_UNTRACKED:
5194 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5195 return FALSE;
5196 break;
5198 default:
5199 die("line type %d not handled in switch", type);
5200 }
5202 return io_write(io, buf, bufsize);
5203 }
5205 static bool
5206 status_update_file(struct status *status, enum line_type type)
5207 {
5208 struct io io;
5209 bool result;
5211 if (!status_update_prepare(&io, type))
5212 return FALSE;
5214 result = status_update_write(&io, status, type);
5215 return io_done(&io) && result;
5216 }
5218 static bool
5219 status_update_files(struct view *view, struct line *line)
5220 {
5221 char buf[sizeof(view->ref)];
5222 struct io io;
5223 bool result = TRUE;
5224 struct line *pos = view->line + view->lines;
5225 int files = 0;
5226 int file, done;
5227 int cursor_y = -1, cursor_x = -1;
5229 if (!status_update_prepare(&io, line->type))
5230 return FALSE;
5232 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5233 files++;
5235 string_copy(buf, view->ref);
5236 getsyx(cursor_y, cursor_x);
5237 for (file = 0, done = 5; result && file < files; line++, file++) {
5238 int almost_done = file * 100 / files;
5240 if (almost_done > done) {
5241 done = almost_done;
5242 string_format(view->ref, "updating file %u of %u (%d%% done)",
5243 file, files, done);
5244 update_view_title(view);
5245 setsyx(cursor_y, cursor_x);
5246 doupdate();
5247 }
5248 result = status_update_write(&io, line->data, line->type);
5249 }
5250 string_copy(view->ref, buf);
5252 return io_done(&io) && result;
5253 }
5255 static bool
5256 status_update(struct view *view)
5257 {
5258 struct line *line = &view->line[view->lineno];
5260 assert(view->lines);
5262 if (!line->data) {
5263 /* This should work even for the "On branch" line. */
5264 if (line < view->line + view->lines && !line[1].data) {
5265 report("Nothing to update");
5266 return FALSE;
5267 }
5269 if (!status_update_files(view, line + 1)) {
5270 report("Failed to update file status");
5271 return FALSE;
5272 }
5274 } else if (!status_update_file(line->data, line->type)) {
5275 report("Failed to update file status");
5276 return FALSE;
5277 }
5279 return TRUE;
5280 }
5282 static bool
5283 status_revert(struct status *status, enum line_type type, bool has_none)
5284 {
5285 if (!status || type != LINE_STAT_UNSTAGED) {
5286 if (type == LINE_STAT_STAGED) {
5287 report("Cannot revert changes to staged files");
5288 } else if (type == LINE_STAT_UNTRACKED) {
5289 report("Cannot revert changes to untracked files");
5290 } else if (has_none) {
5291 report("Nothing to revert");
5292 } else {
5293 report("Cannot revert changes to multiple files");
5294 }
5296 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5297 char mode[10] = "100644";
5298 const char *reset_argv[] = {
5299 "git", "update-index", "--cacheinfo", mode,
5300 status->old.rev, status->old.name, NULL
5301 };
5302 const char *checkout_argv[] = {
5303 "git", "checkout", "--", status->old.name, NULL
5304 };
5306 if (status->status == 'U') {
5307 string_format(mode, "%5o", status->old.mode);
5309 if (status->old.mode == 0 && status->new.mode == 0) {
5310 reset_argv[2] = "--force-remove";
5311 reset_argv[3] = status->old.name;
5312 reset_argv[4] = NULL;
5313 }
5315 if (!io_run_fg(reset_argv, opt_cdup))
5316 return FALSE;
5317 if (status->old.mode == 0 && status->new.mode == 0)
5318 return TRUE;
5319 }
5321 return io_run_fg(checkout_argv, opt_cdup);
5322 }
5324 return FALSE;
5325 }
5327 static enum request
5328 status_request(struct view *view, enum request request, struct line *line)
5329 {
5330 struct status *status = line->data;
5332 switch (request) {
5333 case REQ_STATUS_UPDATE:
5334 if (!status_update(view))
5335 return REQ_NONE;
5336 break;
5338 case REQ_STATUS_REVERT:
5339 if (!status_revert(status, line->type, status_has_none(view, line)))
5340 return REQ_NONE;
5341 break;
5343 case REQ_STATUS_MERGE:
5344 if (!status || status->status != 'U') {
5345 report("Merging only possible for files with unmerged status ('U').");
5346 return REQ_NONE;
5347 }
5348 open_mergetool(status->new.name);
5349 break;
5351 case REQ_EDIT:
5352 if (!status)
5353 return request;
5354 if (status->status == 'D') {
5355 report("File has been deleted.");
5356 return REQ_NONE;
5357 }
5359 open_editor(status->new.name);
5360 break;
5362 case REQ_VIEW_BLAME:
5363 if (status)
5364 opt_ref[0] = 0;
5365 return request;
5367 case REQ_ENTER:
5368 /* After returning the status view has been split to
5369 * show the stage view. No further reloading is
5370 * necessary. */
5371 return status_enter(view, line);
5373 case REQ_REFRESH:
5374 /* Simply reload the view. */
5375 break;
5377 default:
5378 return request;
5379 }
5381 refresh_view(view);
5383 return REQ_NONE;
5384 }
5386 static void
5387 status_select(struct view *view, struct line *line)
5388 {
5389 struct status *status = line->data;
5390 char file[SIZEOF_STR] = "all files";
5391 const char *text;
5392 const char *key;
5394 if (status && !string_format(file, "'%s'", status->new.name))
5395 return;
5397 if (!status && line[1].type == LINE_STAT_NONE)
5398 line++;
5400 switch (line->type) {
5401 case LINE_STAT_STAGED:
5402 text = "Press %s to unstage %s for commit";
5403 break;
5405 case LINE_STAT_UNSTAGED:
5406 text = "Press %s to stage %s for commit";
5407 break;
5409 case LINE_STAT_UNTRACKED:
5410 text = "Press %s to stage %s for addition";
5411 break;
5413 case LINE_STAT_HEAD:
5414 case LINE_STAT_NONE:
5415 text = "Nothing to update";
5416 break;
5418 default:
5419 die("line type %d not handled in switch", line->type);
5420 }
5422 if (status && status->status == 'U') {
5423 text = "Press %s to resolve conflict in %s";
5424 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5426 } else {
5427 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5428 }
5430 string_format(view->ref, text, key, file);
5431 if (status)
5432 string_copy(opt_file, status->new.name);
5433 }
5435 static bool
5436 status_grep(struct view *view, struct line *line)
5437 {
5438 struct status *status = line->data;
5440 if (status) {
5441 const char buf[2] = { status->status, 0 };
5442 const char *text[] = { status->new.name, buf, NULL };
5444 return grep_text(view, text);
5445 }
5447 return FALSE;
5448 }
5450 static struct view_ops status_ops = {
5451 "file",
5452 status_open,
5453 NULL,
5454 status_draw,
5455 status_request,
5456 status_grep,
5457 status_select,
5458 };
5461 static bool
5462 stage_diff_write(struct io *io, struct line *line, struct line *end)
5463 {
5464 while (line < end) {
5465 if (!io_write(io, line->data, strlen(line->data)) ||
5466 !io_write(io, "\n", 1))
5467 return FALSE;
5468 line++;
5469 if (line->type == LINE_DIFF_CHUNK ||
5470 line->type == LINE_DIFF_HEADER)
5471 break;
5472 }
5474 return TRUE;
5475 }
5477 static struct line *
5478 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5479 {
5480 for (; view->line < line; line--)
5481 if (line->type == type)
5482 return line;
5484 return NULL;
5485 }
5487 static bool
5488 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5489 {
5490 const char *apply_argv[SIZEOF_ARG] = {
5491 "git", "apply", "--whitespace=nowarn", NULL
5492 };
5493 struct line *diff_hdr;
5494 struct io io;
5495 int argc = 3;
5497 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5498 if (!diff_hdr)
5499 return FALSE;
5501 if (!revert)
5502 apply_argv[argc++] = "--cached";
5503 if (revert || stage_line_type == LINE_STAT_STAGED)
5504 apply_argv[argc++] = "-R";
5505 apply_argv[argc++] = "-";
5506 apply_argv[argc++] = NULL;
5507 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5508 return FALSE;
5510 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5511 !stage_diff_write(&io, chunk, view->line + view->lines))
5512 chunk = NULL;
5514 io_done(&io);
5515 io_run_bg(update_index_argv);
5517 return chunk ? TRUE : FALSE;
5518 }
5520 static bool
5521 stage_update(struct view *view, struct line *line)
5522 {
5523 struct line *chunk = NULL;
5525 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5526 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5528 if (chunk) {
5529 if (!stage_apply_chunk(view, chunk, FALSE)) {
5530 report("Failed to apply chunk");
5531 return FALSE;
5532 }
5534 } else if (!stage_status.status) {
5535 view = VIEW(REQ_VIEW_STATUS);
5537 for (line = view->line; line < view->line + view->lines; line++)
5538 if (line->type == stage_line_type)
5539 break;
5541 if (!status_update_files(view, line + 1)) {
5542 report("Failed to update files");
5543 return FALSE;
5544 }
5546 } else if (!status_update_file(&stage_status, stage_line_type)) {
5547 report("Failed to update file");
5548 return FALSE;
5549 }
5551 return TRUE;
5552 }
5554 static bool
5555 stage_revert(struct view *view, struct line *line)
5556 {
5557 struct line *chunk = NULL;
5559 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5560 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5562 if (chunk) {
5563 if (!prompt_yesno("Are you sure you want to revert changes?"))
5564 return FALSE;
5566 if (!stage_apply_chunk(view, chunk, TRUE)) {
5567 report("Failed to revert chunk");
5568 return FALSE;
5569 }
5570 return TRUE;
5572 } else {
5573 return status_revert(stage_status.status ? &stage_status : NULL,
5574 stage_line_type, FALSE);
5575 }
5576 }
5579 static void
5580 stage_next(struct view *view, struct line *line)
5581 {
5582 int i;
5584 if (!stage_chunks) {
5585 for (line = view->line; line < view->line + view->lines; line++) {
5586 if (line->type != LINE_DIFF_CHUNK)
5587 continue;
5589 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5590 report("Allocation failure");
5591 return;
5592 }
5594 stage_chunk[stage_chunks++] = line - view->line;
5595 }
5596 }
5598 for (i = 0; i < stage_chunks; i++) {
5599 if (stage_chunk[i] > view->lineno) {
5600 do_scroll_view(view, stage_chunk[i] - view->lineno);
5601 report("Chunk %d of %d", i + 1, stage_chunks);
5602 return;
5603 }
5604 }
5606 report("No next chunk found");
5607 }
5609 static enum request
5610 stage_request(struct view *view, enum request request, struct line *line)
5611 {
5612 switch (request) {
5613 case REQ_STATUS_UPDATE:
5614 if (!stage_update(view, line))
5615 return REQ_NONE;
5616 break;
5618 case REQ_STATUS_REVERT:
5619 if (!stage_revert(view, line))
5620 return REQ_NONE;
5621 break;
5623 case REQ_STAGE_NEXT:
5624 if (stage_line_type == LINE_STAT_UNTRACKED) {
5625 report("File is untracked; press %s to add",
5626 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5627 return REQ_NONE;
5628 }
5629 stage_next(view, line);
5630 return REQ_NONE;
5632 case REQ_EDIT:
5633 if (!stage_status.new.name[0])
5634 return request;
5635 if (stage_status.status == 'D') {
5636 report("File has been deleted.");
5637 return REQ_NONE;
5638 }
5640 open_editor(stage_status.new.name);
5641 break;
5643 case REQ_REFRESH:
5644 /* Reload everything ... */
5645 break;
5647 case REQ_VIEW_BLAME:
5648 if (stage_status.new.name[0]) {
5649 string_copy(opt_file, stage_status.new.name);
5650 opt_ref[0] = 0;
5651 }
5652 return request;
5654 case REQ_ENTER:
5655 return pager_request(view, request, line);
5657 default:
5658 return request;
5659 }
5661 refresh_view(view->parent);
5663 /* Check whether the staged entry still exists, and close the
5664 * stage view if it doesn't. */
5665 if (!status_exists(&stage_status, stage_line_type)) {
5666 status_restore(VIEW(REQ_VIEW_STATUS));
5667 return REQ_VIEW_CLOSE;
5668 }
5670 refresh_view(view);
5672 return REQ_NONE;
5673 }
5675 static struct view_ops stage_ops = {
5676 "line",
5677 view_open,
5678 pager_read,
5679 pager_draw,
5680 stage_request,
5681 pager_grep,
5682 pager_select,
5683 };
5686 /*
5687 * Revision graph
5688 */
5690 static const enum line_type graph_colors[] = {
5691 LINE_GRAPH_LINE_0,
5692 LINE_GRAPH_LINE_1,
5693 LINE_GRAPH_LINE_2,
5694 LINE_GRAPH_LINE_3,
5695 LINE_GRAPH_LINE_4,
5696 LINE_GRAPH_LINE_5,
5697 LINE_GRAPH_LINE_6,
5698 };
5700 static enum line_type get_graph_color(struct graph_symbol *symbol)
5701 {
5702 if (symbol->commit)
5703 return LINE_GRAPH_COMMIT;
5704 assert(symbol->color < ARRAY_SIZE(graph_colors));
5705 return graph_colors[symbol->color];
5706 }
5708 static bool
5709 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5710 {
5711 const char *chars = graph_symbol_to_utf8(symbol);
5713 return draw_text(view, color, chars + !!first);
5714 }
5716 static bool
5717 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5718 {
5719 const char *chars = graph_symbol_to_ascii(symbol);
5721 return draw_text(view, color, chars + !!first);
5722 }
5724 static bool
5725 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5726 {
5727 const chtype *chars = graph_symbol_to_chtype(symbol);
5729 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5730 }
5732 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5734 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5735 {
5736 static const draw_graph_fn fns[] = {
5737 draw_graph_ascii,
5738 draw_graph_chtype,
5739 draw_graph_utf8
5740 };
5741 draw_graph_fn fn = fns[opt_line_graphics];
5742 int i;
5744 for (i = 0; i < canvas->size; i++) {
5745 struct graph_symbol *symbol = &canvas->symbols[i];
5746 enum line_type color = get_graph_color(symbol);
5748 if (fn(view, symbol, color, i == 0))
5749 return TRUE;
5750 }
5752 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5753 }
5755 /*
5756 * Main view backend
5757 */
5759 struct commit {
5760 char id[SIZEOF_REV]; /* SHA1 ID. */
5761 char title[128]; /* First line of the commit message. */
5762 const char *author; /* Author of the commit. */
5763 struct time time; /* Date from the author ident. */
5764 struct ref_list *refs; /* Repository references. */
5765 struct graph_canvas graph; /* Ancestry chain graphics. */
5766 };
5768 static bool
5769 main_open(struct view *view, enum open_flags flags)
5770 {
5771 static const char *main_argv[] = {
5772 "git", "log", "--no-color", "--pretty=raw", "--parents",
5773 "--topo-order", "%(diffargs)", "%(revargs)",
5774 "--", "%(fileargs)", NULL
5775 };
5777 return begin_update(view, NULL, main_argv, flags);
5778 }
5780 static bool
5781 main_draw(struct view *view, struct line *line, unsigned int lineno)
5782 {
5783 struct commit *commit = line->data;
5785 if (!commit->author)
5786 return FALSE;
5788 if (draw_date(view, &commit->time))
5789 return TRUE;
5791 if (draw_author(view, commit->author))
5792 return TRUE;
5794 if (opt_rev_graph && draw_graph(view, &commit->graph))
5795 return TRUE;
5797 if (opt_show_refs && commit->refs) {
5798 size_t i;
5800 for (i = 0; i < commit->refs->size; i++) {
5801 struct ref *ref = commit->refs->refs[i];
5802 enum line_type type;
5804 if (ref->head)
5805 type = LINE_MAIN_HEAD;
5806 else if (ref->ltag)
5807 type = LINE_MAIN_LOCAL_TAG;
5808 else if (ref->tag)
5809 type = LINE_MAIN_TAG;
5810 else if (ref->tracked)
5811 type = LINE_MAIN_TRACKED;
5812 else if (ref->remote)
5813 type = LINE_MAIN_REMOTE;
5814 else
5815 type = LINE_MAIN_REF;
5817 if (draw_text(view, type, "[") ||
5818 draw_text(view, type, ref->name) ||
5819 draw_text(view, type, "]"))
5820 return TRUE;
5822 if (draw_text(view, LINE_DEFAULT, " "))
5823 return TRUE;
5824 }
5825 }
5827 draw_text(view, LINE_DEFAULT, commit->title);
5828 return TRUE;
5829 }
5831 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5832 static bool
5833 main_read(struct view *view, char *line)
5834 {
5835 static struct graph graph;
5836 enum line_type type;
5837 struct commit *commit;
5839 if (!line) {
5840 if (!view->lines && !view->prev)
5841 die("No revisions match the given arguments.");
5842 if (view->lines > 0) {
5843 commit = view->line[view->lines - 1].data;
5844 view->line[view->lines - 1].dirty = 1;
5845 if (!commit->author) {
5846 view->lines--;
5847 free(commit);
5848 }
5849 }
5851 done_graph(&graph);
5852 return TRUE;
5853 }
5855 type = get_line_type(line);
5856 if (type == LINE_COMMIT) {
5857 bool is_boundary;
5859 commit = calloc(1, sizeof(struct commit));
5860 if (!commit)
5861 return FALSE;
5863 line += STRING_SIZE("commit ");
5864 is_boundary = *line == '-';
5865 if (is_boundary)
5866 line++;
5868 string_copy_rev(commit->id, line);
5869 commit->refs = get_ref_list(commit->id);
5870 add_line_data(view, commit, LINE_MAIN_COMMIT);
5871 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5872 return TRUE;
5873 }
5875 if (!view->lines)
5876 return TRUE;
5877 commit = view->line[view->lines - 1].data;
5879 switch (type) {
5880 case LINE_PARENT:
5881 if (!graph.has_parents)
5882 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5883 break;
5885 case LINE_AUTHOR:
5886 parse_author_line(line + STRING_SIZE("author "),
5887 &commit->author, &commit->time);
5888 graph_render_parents(&graph);
5889 break;
5891 default:
5892 /* Fill in the commit title if it has not already been set. */
5893 if (commit->title[0])
5894 break;
5896 /* Require titles to start with a non-space character at the
5897 * offset used by git log. */
5898 if (strncmp(line, " ", 4))
5899 break;
5900 line += 4;
5901 /* Well, if the title starts with a whitespace character,
5902 * try to be forgiving. Otherwise we end up with no title. */
5903 while (isspace(*line))
5904 line++;
5905 if (*line == '\0')
5906 break;
5907 /* FIXME: More graceful handling of titles; append "..." to
5908 * shortened titles, etc. */
5910 string_expand(commit->title, sizeof(commit->title), line, 1);
5911 view->line[view->lines - 1].dirty = 1;
5912 }
5914 return TRUE;
5915 }
5917 static enum request
5918 main_request(struct view *view, enum request request, struct line *line)
5919 {
5920 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5922 switch (request) {
5923 case REQ_ENTER:
5924 if (view_is_displayed(view) && display[0] != view)
5925 maximize_view(view, TRUE);
5926 open_view(view, REQ_VIEW_DIFF, flags);
5927 break;
5928 case REQ_REFRESH:
5929 load_refs();
5930 refresh_view(view);
5931 break;
5932 default:
5933 return request;
5934 }
5936 return REQ_NONE;
5937 }
5939 static bool
5940 grep_refs(struct ref_list *list, regex_t *regex)
5941 {
5942 regmatch_t pmatch;
5943 size_t i;
5945 if (!opt_show_refs || !list)
5946 return FALSE;
5948 for (i = 0; i < list->size; i++) {
5949 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5950 return TRUE;
5951 }
5953 return FALSE;
5954 }
5956 static bool
5957 main_grep(struct view *view, struct line *line)
5958 {
5959 struct commit *commit = line->data;
5960 const char *text[] = {
5961 commit->title,
5962 opt_author ? commit->author : "",
5963 mkdate(&commit->time, opt_date),
5964 NULL
5965 };
5967 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5968 }
5970 static void
5971 main_select(struct view *view, struct line *line)
5972 {
5973 struct commit *commit = line->data;
5975 string_copy_rev(view->ref, commit->id);
5976 string_copy_rev(ref_commit, view->ref);
5977 }
5979 static struct view_ops main_ops = {
5980 "commit",
5981 main_open,
5982 main_read,
5983 main_draw,
5984 main_request,
5985 main_grep,
5986 main_select,
5987 };
5990 /*
5991 * Status management
5992 */
5994 /* Whether or not the curses interface has been initialized. */
5995 static bool cursed = FALSE;
5997 /* Terminal hacks and workarounds. */
5998 static bool use_scroll_redrawwin;
5999 static bool use_scroll_status_wclear;
6001 /* The status window is used for polling keystrokes. */
6002 static WINDOW *status_win;
6004 /* Reading from the prompt? */
6005 static bool input_mode = FALSE;
6007 static bool status_empty = FALSE;
6009 /* Update status and title window. */
6010 static void
6011 report(const char *msg, ...)
6012 {
6013 struct view *view = display[current_view];
6015 if (input_mode)
6016 return;
6018 if (!view) {
6019 char buf[SIZEOF_STR];
6020 va_list args;
6022 va_start(args, msg);
6023 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6024 buf[sizeof(buf) - 1] = 0;
6025 buf[sizeof(buf) - 2] = '.';
6026 buf[sizeof(buf) - 3] = '.';
6027 buf[sizeof(buf) - 4] = '.';
6028 }
6029 va_end(args);
6030 die("%s", buf);
6031 }
6033 if (!status_empty || *msg) {
6034 va_list args;
6036 va_start(args, msg);
6038 wmove(status_win, 0, 0);
6039 if (view->has_scrolled && use_scroll_status_wclear)
6040 wclear(status_win);
6041 if (*msg) {
6042 vwprintw(status_win, msg, args);
6043 status_empty = FALSE;
6044 } else {
6045 status_empty = TRUE;
6046 }
6047 wclrtoeol(status_win);
6048 wnoutrefresh(status_win);
6050 va_end(args);
6051 }
6053 update_view_title(view);
6054 }
6056 static void
6057 init_display(void)
6058 {
6059 const char *term;
6060 int x, y;
6062 /* Initialize the curses library */
6063 if (isatty(STDIN_FILENO)) {
6064 cursed = !!initscr();
6065 opt_tty = stdin;
6066 } else {
6067 /* Leave stdin and stdout alone when acting as a pager. */
6068 opt_tty = fopen("/dev/tty", "r+");
6069 if (!opt_tty)
6070 die("Failed to open /dev/tty");
6071 cursed = !!newterm(NULL, opt_tty, opt_tty);
6072 }
6074 if (!cursed)
6075 die("Failed to initialize curses");
6077 nonl(); /* Disable conversion and detect newlines from input. */
6078 cbreak(); /* Take input chars one at a time, no wait for \n */
6079 noecho(); /* Don't echo input */
6080 leaveok(stdscr, FALSE);
6082 if (has_colors())
6083 init_colors();
6085 getmaxyx(stdscr, y, x);
6086 status_win = newwin(1, x, y - 1, 0);
6087 if (!status_win)
6088 die("Failed to create status window");
6090 /* Enable keyboard mapping */
6091 keypad(status_win, TRUE);
6092 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6094 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6095 set_tabsize(opt_tab_size);
6096 #else
6097 TABSIZE = opt_tab_size;
6098 #endif
6100 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6101 if (term && !strcmp(term, "gnome-terminal")) {
6102 /* In the gnome-terminal-emulator, the message from
6103 * scrolling up one line when impossible followed by
6104 * scrolling down one line causes corruption of the
6105 * status line. This is fixed by calling wclear. */
6106 use_scroll_status_wclear = TRUE;
6107 use_scroll_redrawwin = FALSE;
6109 } else if (term && !strcmp(term, "xrvt-xpm")) {
6110 /* No problems with full optimizations in xrvt-(unicode)
6111 * and aterm. */
6112 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6114 } else {
6115 /* When scrolling in (u)xterm the last line in the
6116 * scrolling direction will update slowly. */
6117 use_scroll_redrawwin = TRUE;
6118 use_scroll_status_wclear = FALSE;
6119 }
6120 }
6122 static int
6123 get_input(int prompt_position)
6124 {
6125 struct view *view;
6126 int i, key, cursor_y, cursor_x;
6128 if (prompt_position)
6129 input_mode = TRUE;
6131 while (TRUE) {
6132 bool loading = FALSE;
6134 foreach_view (view, i) {
6135 update_view(view);
6136 if (view_is_displayed(view) && view->has_scrolled &&
6137 use_scroll_redrawwin)
6138 redrawwin(view->win);
6139 view->has_scrolled = FALSE;
6140 if (view->pipe)
6141 loading = TRUE;
6142 }
6144 /* Update the cursor position. */
6145 if (prompt_position) {
6146 getbegyx(status_win, cursor_y, cursor_x);
6147 cursor_x = prompt_position;
6148 } else {
6149 view = display[current_view];
6150 getbegyx(view->win, cursor_y, cursor_x);
6151 cursor_x = view->width - 1;
6152 cursor_y += view->lineno - view->offset;
6153 }
6154 setsyx(cursor_y, cursor_x);
6156 /* Refresh, accept single keystroke of input */
6157 doupdate();
6158 nodelay(status_win, loading);
6159 key = wgetch(status_win);
6161 /* wgetch() with nodelay() enabled returns ERR when
6162 * there's no input. */
6163 if (key == ERR) {
6165 } else if (key == KEY_RESIZE) {
6166 int height, width;
6168 getmaxyx(stdscr, height, width);
6170 wresize(status_win, 1, width);
6171 mvwin(status_win, height - 1, 0);
6172 wnoutrefresh(status_win);
6173 resize_display();
6174 redraw_display(TRUE);
6176 } else {
6177 input_mode = FALSE;
6178 return key;
6179 }
6180 }
6181 }
6183 static char *
6184 prompt_input(const char *prompt, input_handler handler, void *data)
6185 {
6186 enum input_status status = INPUT_OK;
6187 static char buf[SIZEOF_STR];
6188 size_t pos = 0;
6190 buf[pos] = 0;
6192 while (status == INPUT_OK || status == INPUT_SKIP) {
6193 int key;
6195 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6196 wclrtoeol(status_win);
6198 key = get_input(pos + 1);
6199 switch (key) {
6200 case KEY_RETURN:
6201 case KEY_ENTER:
6202 case '\n':
6203 status = pos ? INPUT_STOP : INPUT_CANCEL;
6204 break;
6206 case KEY_BACKSPACE:
6207 if (pos > 0)
6208 buf[--pos] = 0;
6209 else
6210 status = INPUT_CANCEL;
6211 break;
6213 case KEY_ESC:
6214 status = INPUT_CANCEL;
6215 break;
6217 default:
6218 if (pos >= sizeof(buf)) {
6219 report("Input string too long");
6220 return NULL;
6221 }
6223 status = handler(data, buf, key);
6224 if (status == INPUT_OK)
6225 buf[pos++] = (char) key;
6226 }
6227 }
6229 /* Clear the status window */
6230 status_empty = FALSE;
6231 report("");
6233 if (status == INPUT_CANCEL)
6234 return NULL;
6236 buf[pos++] = 0;
6238 return buf;
6239 }
6241 static enum input_status
6242 prompt_yesno_handler(void *data, char *buf, int c)
6243 {
6244 if (c == 'y' || c == 'Y')
6245 return INPUT_STOP;
6246 if (c == 'n' || c == 'N')
6247 return INPUT_CANCEL;
6248 return INPUT_SKIP;
6249 }
6251 static bool
6252 prompt_yesno(const char *prompt)
6253 {
6254 char prompt2[SIZEOF_STR];
6256 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6257 return FALSE;
6259 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6260 }
6262 static enum input_status
6263 read_prompt_handler(void *data, char *buf, int c)
6264 {
6265 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6266 }
6268 static char *
6269 read_prompt(const char *prompt)
6270 {
6271 return prompt_input(prompt, read_prompt_handler, NULL);
6272 }
6274 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6275 {
6276 enum input_status status = INPUT_OK;
6277 int size = 0;
6279 while (items[size].text)
6280 size++;
6282 while (status == INPUT_OK) {
6283 const struct menu_item *item = &items[*selected];
6284 int key;
6285 int i;
6287 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6288 prompt, *selected + 1, size);
6289 if (item->hotkey)
6290 wprintw(status_win, "[%c] ", (char) item->hotkey);
6291 wprintw(status_win, "%s", item->text);
6292 wclrtoeol(status_win);
6294 key = get_input(COLS - 1);
6295 switch (key) {
6296 case KEY_RETURN:
6297 case KEY_ENTER:
6298 case '\n':
6299 status = INPUT_STOP;
6300 break;
6302 case KEY_LEFT:
6303 case KEY_UP:
6304 *selected = *selected - 1;
6305 if (*selected < 0)
6306 *selected = size - 1;
6307 break;
6309 case KEY_RIGHT:
6310 case KEY_DOWN:
6311 *selected = (*selected + 1) % size;
6312 break;
6314 case KEY_ESC:
6315 status = INPUT_CANCEL;
6316 break;
6318 default:
6319 for (i = 0; items[i].text; i++)
6320 if (items[i].hotkey == key) {
6321 *selected = i;
6322 status = INPUT_STOP;
6323 break;
6324 }
6325 }
6326 }
6328 /* Clear the status window */
6329 status_empty = FALSE;
6330 report("");
6332 return status != INPUT_CANCEL;
6333 }
6335 /*
6336 * Repository properties
6337 */
6339 static struct ref **refs = NULL;
6340 static size_t refs_size = 0;
6341 static struct ref *refs_head = NULL;
6343 static struct ref_list **ref_lists = NULL;
6344 static size_t ref_lists_size = 0;
6346 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6347 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6348 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6350 static int
6351 compare_refs(const void *ref1_, const void *ref2_)
6352 {
6353 const struct ref *ref1 = *(const struct ref **)ref1_;
6354 const struct ref *ref2 = *(const struct ref **)ref2_;
6356 if (ref1->tag != ref2->tag)
6357 return ref2->tag - ref1->tag;
6358 if (ref1->ltag != ref2->ltag)
6359 return ref2->ltag - ref2->ltag;
6360 if (ref1->head != ref2->head)
6361 return ref2->head - ref1->head;
6362 if (ref1->tracked != ref2->tracked)
6363 return ref2->tracked - ref1->tracked;
6364 if (ref1->remote != ref2->remote)
6365 return ref2->remote - ref1->remote;
6366 return strcmp(ref1->name, ref2->name);
6367 }
6369 static void
6370 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6371 {
6372 size_t i;
6374 for (i = 0; i < refs_size; i++)
6375 if (!visitor(data, refs[i]))
6376 break;
6377 }
6379 static struct ref *
6380 get_ref_head()
6381 {
6382 return refs_head;
6383 }
6385 static struct ref_list *
6386 get_ref_list(const char *id)
6387 {
6388 struct ref_list *list;
6389 size_t i;
6391 for (i = 0; i < ref_lists_size; i++)
6392 if (!strcmp(id, ref_lists[i]->id))
6393 return ref_lists[i];
6395 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6396 return NULL;
6397 list = calloc(1, sizeof(*list));
6398 if (!list)
6399 return NULL;
6401 for (i = 0; i < refs_size; i++) {
6402 if (!strcmp(id, refs[i]->id) &&
6403 realloc_refs_list(&list->refs, list->size, 1))
6404 list->refs[list->size++] = refs[i];
6405 }
6407 if (!list->refs) {
6408 free(list);
6409 return NULL;
6410 }
6412 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6413 ref_lists[ref_lists_size++] = list;
6414 return list;
6415 }
6417 static int
6418 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6419 {
6420 struct ref *ref = NULL;
6421 bool tag = FALSE;
6422 bool ltag = FALSE;
6423 bool remote = FALSE;
6424 bool tracked = FALSE;
6425 bool head = FALSE;
6426 int from = 0, to = refs_size - 1;
6428 if (!prefixcmp(name, "refs/tags/")) {
6429 if (!suffixcmp(name, namelen, "^{}")) {
6430 namelen -= 3;
6431 name[namelen] = 0;
6432 } else {
6433 ltag = TRUE;
6434 }
6436 tag = TRUE;
6437 namelen -= STRING_SIZE("refs/tags/");
6438 name += STRING_SIZE("refs/tags/");
6440 } else if (!prefixcmp(name, "refs/remotes/")) {
6441 remote = TRUE;
6442 namelen -= STRING_SIZE("refs/remotes/");
6443 name += STRING_SIZE("refs/remotes/");
6444 tracked = !strcmp(opt_remote, name);
6446 } else if (!prefixcmp(name, "refs/heads/")) {
6447 namelen -= STRING_SIZE("refs/heads/");
6448 name += STRING_SIZE("refs/heads/");
6449 if (!strncmp(opt_head, name, namelen))
6450 return OK;
6452 } else if (!strcmp(name, "HEAD")) {
6453 head = TRUE;
6454 if (*opt_head) {
6455 namelen = strlen(opt_head);
6456 name = opt_head;
6457 }
6458 }
6460 /* If we are reloading or it's an annotated tag, replace the
6461 * previous SHA1 with the resolved commit id; relies on the fact
6462 * git-ls-remote lists the commit id of an annotated tag right
6463 * before the commit id it points to. */
6464 while (from <= to) {
6465 size_t pos = (to + from) / 2;
6466 int cmp = strcmp(name, refs[pos]->name);
6468 if (!cmp) {
6469 ref = refs[pos];
6470 break;
6471 }
6473 if (cmp < 0)
6474 to = pos - 1;
6475 else
6476 from = pos + 1;
6477 }
6479 if (!ref) {
6480 if (!realloc_refs(&refs, refs_size, 1))
6481 return ERR;
6482 ref = calloc(1, sizeof(*ref) + namelen);
6483 if (!ref)
6484 return ERR;
6485 memmove(refs + from + 1, refs + from,
6486 (refs_size - from) * sizeof(*refs));
6487 refs[from] = ref;
6488 strncpy(ref->name, name, namelen);
6489 refs_size++;
6490 }
6492 ref->head = head;
6493 ref->tag = tag;
6494 ref->ltag = ltag;
6495 ref->remote = remote;
6496 ref->tracked = tracked;
6497 string_copy_rev(ref->id, id);
6499 if (head)
6500 refs_head = ref;
6501 return OK;
6502 }
6504 static int
6505 load_refs(void)
6506 {
6507 const char *head_argv[] = {
6508 "git", "symbolic-ref", "HEAD", NULL
6509 };
6510 static const char *ls_remote_argv[SIZEOF_ARG] = {
6511 "git", "ls-remote", opt_git_dir, NULL
6512 };
6513 static bool init = FALSE;
6514 size_t i;
6516 if (!init) {
6517 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6518 die("TIG_LS_REMOTE contains too many arguments");
6519 init = TRUE;
6520 }
6522 if (!*opt_git_dir)
6523 return OK;
6525 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6526 !prefixcmp(opt_head, "refs/heads/")) {
6527 char *offset = opt_head + STRING_SIZE("refs/heads/");
6529 memmove(opt_head, offset, strlen(offset) + 1);
6530 }
6532 refs_head = NULL;
6533 for (i = 0; i < refs_size; i++)
6534 refs[i]->id[0] = 0;
6536 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6537 return ERR;
6539 /* Update the ref lists to reflect changes. */
6540 for (i = 0; i < ref_lists_size; i++) {
6541 struct ref_list *list = ref_lists[i];
6542 size_t old, new;
6544 for (old = new = 0; old < list->size; old++)
6545 if (!strcmp(list->id, list->refs[old]->id))
6546 list->refs[new++] = list->refs[old];
6547 list->size = new;
6548 }
6550 return OK;
6551 }
6553 static void
6554 set_remote_branch(const char *name, const char *value, size_t valuelen)
6555 {
6556 if (!strcmp(name, ".remote")) {
6557 string_ncopy(opt_remote, value, valuelen);
6559 } else if (*opt_remote && !strcmp(name, ".merge")) {
6560 size_t from = strlen(opt_remote);
6562 if (!prefixcmp(value, "refs/heads/"))
6563 value += STRING_SIZE("refs/heads/");
6565 if (!string_format_from(opt_remote, &from, "/%s", value))
6566 opt_remote[0] = 0;
6567 }
6568 }
6570 static void
6571 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6572 {
6573 const char *argv[SIZEOF_ARG] = { name, "=" };
6574 int argc = 1 + (cmd == option_set_command);
6575 enum option_code error;
6577 if (!argv_from_string(argv, &argc, value))
6578 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6579 else
6580 error = cmd(argc, argv);
6582 if (error != OPT_OK)
6583 warn("Option 'tig.%s': %s", name, option_errors[error]);
6584 }
6586 static bool
6587 set_environment_variable(const char *name, const char *value)
6588 {
6589 size_t len = strlen(name) + 1 + strlen(value) + 1;
6590 char *env = malloc(len);
6592 if (env &&
6593 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6594 putenv(env) == 0)
6595 return TRUE;
6596 free(env);
6597 return FALSE;
6598 }
6600 static void
6601 set_work_tree(const char *value)
6602 {
6603 char cwd[SIZEOF_STR];
6605 if (!getcwd(cwd, sizeof(cwd)))
6606 die("Failed to get cwd path: %s", strerror(errno));
6607 if (chdir(opt_git_dir) < 0)
6608 die("Failed to chdir(%s): %s", strerror(errno));
6609 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6610 die("Failed to get git path: %s", strerror(errno));
6611 if (chdir(cwd) < 0)
6612 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6613 if (chdir(value) < 0)
6614 die("Failed to chdir(%s): %s", value, strerror(errno));
6615 if (!getcwd(cwd, sizeof(cwd)))
6616 die("Failed to get cwd path: %s", strerror(errno));
6617 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6618 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6619 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6620 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6621 opt_is_inside_work_tree = TRUE;
6622 }
6624 static int
6625 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6626 {
6627 if (!strcmp(name, "i18n.commitencoding"))
6628 string_ncopy(opt_encoding, value, valuelen);
6630 else if (!strcmp(name, "core.editor"))
6631 string_ncopy(opt_editor, value, valuelen);
6633 else if (!strcmp(name, "core.worktree"))
6634 set_work_tree(value);
6636 else if (!prefixcmp(name, "tig.color."))
6637 set_repo_config_option(name + 10, value, option_color_command);
6639 else if (!prefixcmp(name, "tig.bind."))
6640 set_repo_config_option(name + 9, value, option_bind_command);
6642 else if (!prefixcmp(name, "tig."))
6643 set_repo_config_option(name + 4, value, option_set_command);
6645 else if (*opt_head && !prefixcmp(name, "branch.") &&
6646 !strncmp(name + 7, opt_head, strlen(opt_head)))
6647 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6649 return OK;
6650 }
6652 static int
6653 load_git_config(void)
6654 {
6655 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6657 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6658 }
6660 static int
6661 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6662 {
6663 if (!opt_git_dir[0]) {
6664 string_ncopy(opt_git_dir, name, namelen);
6666 } else if (opt_is_inside_work_tree == -1) {
6667 /* This can be 3 different values depending on the
6668 * version of git being used. If git-rev-parse does not
6669 * understand --is-inside-work-tree it will simply echo
6670 * the option else either "true" or "false" is printed.
6671 * Default to true for the unknown case. */
6672 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6674 } else if (*name == '.') {
6675 string_ncopy(opt_cdup, name, namelen);
6677 } else {
6678 string_ncopy(opt_prefix, name, namelen);
6679 }
6681 return OK;
6682 }
6684 static int
6685 load_repo_info(void)
6686 {
6687 const char *rev_parse_argv[] = {
6688 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6689 "--show-cdup", "--show-prefix", NULL
6690 };
6692 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6693 }
6696 /*
6697 * Main
6698 */
6700 static const char usage[] =
6701 "tig " TIG_VERSION " (" __DATE__ ")\n"
6702 "\n"
6703 "Usage: tig [options] [revs] [--] [paths]\n"
6704 " or: tig show [options] [revs] [--] [paths]\n"
6705 " or: tig blame [options] [rev] [--] path\n"
6706 " or: tig status\n"
6707 " or: tig < [git command output]\n"
6708 "\n"
6709 "Options:\n"
6710 " -v, --version Show version and exit\n"
6711 " -h, --help Show help message and exit";
6713 static void __NORETURN
6714 quit(int sig)
6715 {
6716 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6717 if (cursed)
6718 endwin();
6719 exit(0);
6720 }
6722 static void __NORETURN
6723 die(const char *err, ...)
6724 {
6725 va_list args;
6727 endwin();
6729 va_start(args, err);
6730 fputs("tig: ", stderr);
6731 vfprintf(stderr, err, args);
6732 fputs("\n", stderr);
6733 va_end(args);
6735 exit(1);
6736 }
6738 static void
6739 warn(const char *msg, ...)
6740 {
6741 va_list args;
6743 va_start(args, msg);
6744 fputs("tig warning: ", stderr);
6745 vfprintf(stderr, msg, args);
6746 fputs("\n", stderr);
6747 va_end(args);
6748 }
6750 static int
6751 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6752 {
6753 const char ***filter_args = data;
6755 return argv_append(filter_args, name) ? OK : ERR;
6756 }
6758 static void
6759 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6760 {
6761 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6762 const char **all_argv = NULL;
6764 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6765 !argv_append_array(&all_argv, argv) ||
6766 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6767 die("Failed to split arguments");
6768 argv_free(all_argv);
6769 free(all_argv);
6770 }
6772 static void
6773 filter_options(const char *argv[])
6774 {
6775 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6776 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6777 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6778 }
6780 static enum request
6781 parse_options(int argc, const char *argv[])
6782 {
6783 enum request request = REQ_VIEW_MAIN;
6784 const char *subcommand;
6785 bool seen_dashdash = FALSE;
6786 const char **filter_argv = NULL;
6787 int i;
6789 if (!isatty(STDIN_FILENO))
6790 return REQ_VIEW_PAGER;
6792 if (argc <= 1)
6793 return REQ_VIEW_MAIN;
6795 subcommand = argv[1];
6796 if (!strcmp(subcommand, "status")) {
6797 if (argc > 2)
6798 warn("ignoring arguments after `%s'", subcommand);
6799 return REQ_VIEW_STATUS;
6801 } else if (!strcmp(subcommand, "blame")) {
6802 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6803 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6804 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6806 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6807 die("invalid number of options to blame\n\n%s", usage);
6809 if (opt_rev_argv) {
6810 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6811 }
6813 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6814 return REQ_VIEW_BLAME;
6816 } else if (!strcmp(subcommand, "show")) {
6817 request = REQ_VIEW_DIFF;
6819 } else {
6820 subcommand = NULL;
6821 }
6823 for (i = 1 + !!subcommand; i < argc; i++) {
6824 const char *opt = argv[i];
6826 if (seen_dashdash) {
6827 argv_append(&opt_file_argv, opt);
6828 continue;
6830 } else if (!strcmp(opt, "--")) {
6831 seen_dashdash = TRUE;
6832 continue;
6834 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6835 printf("tig version %s\n", TIG_VERSION);
6836 quit(0);
6838 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6839 printf("%s\n", usage);
6840 quit(0);
6842 } else if (!strcmp(opt, "--all")) {
6843 argv_append(&opt_rev_argv, opt);
6844 continue;
6845 }
6847 if (!argv_append(&filter_argv, opt))
6848 die("command too long");
6849 }
6851 if (filter_argv)
6852 filter_options(filter_argv);
6854 return request;
6855 }
6857 int
6858 main(int argc, const char *argv[])
6859 {
6860 const char *codeset = "UTF-8";
6861 enum request request = parse_options(argc, argv);
6862 struct view *view;
6864 signal(SIGINT, quit);
6865 signal(SIGPIPE, SIG_IGN);
6867 if (setlocale(LC_ALL, "")) {
6868 codeset = nl_langinfo(CODESET);
6869 }
6871 if (load_repo_info() == ERR)
6872 die("Failed to load repo info.");
6874 if (load_options() == ERR)
6875 die("Failed to load user config.");
6877 if (load_git_config() == ERR)
6878 die("Failed to load repo config.");
6880 /* Require a git repository unless when running in pager mode. */
6881 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6882 die("Not a git repository");
6884 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6885 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6886 if (opt_iconv_in == ICONV_NONE)
6887 die("Failed to initialize character set conversion");
6888 }
6890 if (codeset && strcmp(codeset, "UTF-8")) {
6891 opt_iconv_out = iconv_open(codeset, "UTF-8");
6892 if (opt_iconv_out == ICONV_NONE)
6893 die("Failed to initialize character set conversion");
6894 }
6896 if (load_refs() == ERR)
6897 die("Failed to load refs.");
6899 init_display();
6901 while (view_driver(display[current_view], request)) {
6902 int key = get_input(0);
6904 view = display[current_view];
6905 request = get_keybinding(view->keymap, key);
6907 /* Some low-level request handling. This keeps access to
6908 * status_win restricted. */
6909 switch (request) {
6910 case REQ_NONE:
6911 report("Unknown key, press %s for help",
6912 get_key(view->keymap, REQ_VIEW_HELP));
6913 break;
6914 case REQ_PROMPT:
6915 {
6916 char *cmd = read_prompt(":");
6918 if (cmd && isdigit(*cmd)) {
6919 int lineno = view->lineno + 1;
6921 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6922 select_view_line(view, lineno - 1);
6923 report("");
6924 } else {
6925 report("Unable to parse '%s' as a line number", cmd);
6926 }
6928 } else if (cmd) {
6929 struct view *next = VIEW(REQ_VIEW_PAGER);
6930 const char *argv[SIZEOF_ARG] = { "git" };
6931 int argc = 1;
6933 /* When running random commands, initially show the
6934 * command in the title. However, it maybe later be
6935 * overwritten if a commit line is selected. */
6936 string_ncopy(next->ref, cmd, strlen(cmd));
6938 if (!argv_from_string(argv, &argc, cmd)) {
6939 report("Too many arguments");
6940 } else {
6941 open_argv(view, next, argv, NULL, OPEN_DEFAULT);
6942 }
6943 }
6945 request = REQ_NONE;
6946 break;
6947 }
6948 case REQ_SEARCH:
6949 case REQ_SEARCH_BACK:
6950 {
6951 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6952 char *search = read_prompt(prompt);
6954 if (search)
6955 string_ncopy(opt_search, search, strlen(search));
6956 else if (*opt_search)
6957 request = request == REQ_SEARCH ?
6958 REQ_FIND_NEXT :
6959 REQ_FIND_PREV;
6960 else
6961 request = REQ_NONE;
6962 break;
6963 }
6964 default:
6965 break;
6966 }
6967 }
6969 quit(0);
6971 return 0;
6972 }