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