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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)
1981 {
1982 memset(display, 0, sizeof(display));
1983 current_view = 0;
1984 display[current_view] = view;
1985 resize_display();
1986 redraw_display(FALSE);
1987 report("");
1988 }
1991 /*
1992 * Navigation
1993 */
1995 static bool
1996 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
1997 {
1998 if (lineno >= view->lines)
1999 lineno = view->lines > 0 ? view->lines - 1 : 0;
2001 if (offset > lineno || offset + view->height <= lineno) {
2002 unsigned long half = view->height / 2;
2004 if (lineno > half)
2005 offset = lineno - half;
2006 else
2007 offset = 0;
2008 }
2010 if (offset != view->offset || lineno != view->lineno) {
2011 view->offset = offset;
2012 view->lineno = lineno;
2013 return TRUE;
2014 }
2016 return FALSE;
2017 }
2019 /* Scrolling backend */
2020 static void
2021 do_scroll_view(struct view *view, int lines)
2022 {
2023 bool redraw_current_line = FALSE;
2025 /* The rendering expects the new offset. */
2026 view->offset += lines;
2028 assert(0 <= view->offset && view->offset < view->lines);
2029 assert(lines);
2031 /* Move current line into the view. */
2032 if (view->lineno < view->offset) {
2033 view->lineno = view->offset;
2034 redraw_current_line = TRUE;
2035 } else if (view->lineno >= view->offset + view->height) {
2036 view->lineno = view->offset + view->height - 1;
2037 redraw_current_line = TRUE;
2038 }
2040 assert(view->offset <= view->lineno && view->lineno < view->lines);
2042 /* Redraw the whole screen if scrolling is pointless. */
2043 if (view->height < ABS(lines)) {
2044 redraw_view(view);
2046 } else {
2047 int line = lines > 0 ? view->height - lines : 0;
2048 int end = line + ABS(lines);
2050 scrollok(view->win, TRUE);
2051 wscrl(view->win, lines);
2052 scrollok(view->win, FALSE);
2054 while (line < end && draw_view_line(view, line))
2055 line++;
2057 if (redraw_current_line)
2058 draw_view_line(view, view->lineno - view->offset);
2059 wnoutrefresh(view->win);
2060 }
2062 view->has_scrolled = TRUE;
2063 report("");
2064 }
2066 /* Scroll frontend */
2067 static void
2068 scroll_view(struct view *view, enum request request)
2069 {
2070 int lines = 1;
2072 assert(view_is_displayed(view));
2074 switch (request) {
2075 case REQ_SCROLL_FIRST_COL:
2076 view->yoffset = 0;
2077 redraw_view_from(view, 0);
2078 report("");
2079 return;
2080 case REQ_SCROLL_LEFT:
2081 if (view->yoffset == 0) {
2082 report("Cannot scroll beyond the first column");
2083 return;
2084 }
2085 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2086 view->yoffset = 0;
2087 else
2088 view->yoffset -= apply_step(opt_hscroll, view->width);
2089 redraw_view_from(view, 0);
2090 report("");
2091 return;
2092 case REQ_SCROLL_RIGHT:
2093 view->yoffset += apply_step(opt_hscroll, view->width);
2094 redraw_view(view);
2095 report("");
2096 return;
2097 case REQ_SCROLL_PAGE_DOWN:
2098 lines = view->height;
2099 case REQ_SCROLL_LINE_DOWN:
2100 if (view->offset + lines > view->lines)
2101 lines = view->lines - view->offset;
2103 if (lines == 0 || view->offset + view->height >= view->lines) {
2104 report("Cannot scroll beyond the last line");
2105 return;
2106 }
2107 break;
2109 case REQ_SCROLL_PAGE_UP:
2110 lines = view->height;
2111 case REQ_SCROLL_LINE_UP:
2112 if (lines > view->offset)
2113 lines = view->offset;
2115 if (lines == 0) {
2116 report("Cannot scroll beyond the first line");
2117 return;
2118 }
2120 lines = -lines;
2121 break;
2123 default:
2124 die("request %d not handled in switch", request);
2125 }
2127 do_scroll_view(view, lines);
2128 }
2130 /* Cursor moving */
2131 static void
2132 move_view(struct view *view, enum request request)
2133 {
2134 int scroll_steps = 0;
2135 int steps;
2137 switch (request) {
2138 case REQ_MOVE_FIRST_LINE:
2139 steps = -view->lineno;
2140 break;
2142 case REQ_MOVE_LAST_LINE:
2143 steps = view->lines - view->lineno - 1;
2144 break;
2146 case REQ_MOVE_PAGE_UP:
2147 steps = view->height > view->lineno
2148 ? -view->lineno : -view->height;
2149 break;
2151 case REQ_MOVE_PAGE_DOWN:
2152 steps = view->lineno + view->height >= view->lines
2153 ? view->lines - view->lineno - 1 : view->height;
2154 break;
2156 case REQ_MOVE_UP:
2157 steps = -1;
2158 break;
2160 case REQ_MOVE_DOWN:
2161 steps = 1;
2162 break;
2164 default:
2165 die("request %d not handled in switch", request);
2166 }
2168 if (steps <= 0 && view->lineno == 0) {
2169 report("Cannot move beyond the first line");
2170 return;
2172 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2173 report("Cannot move beyond the last line");
2174 return;
2175 }
2177 /* Move the current line */
2178 view->lineno += steps;
2179 assert(0 <= view->lineno && view->lineno < view->lines);
2181 /* Check whether the view needs to be scrolled */
2182 if (view->lineno < view->offset ||
2183 view->lineno >= view->offset + view->height) {
2184 scroll_steps = steps;
2185 if (steps < 0 && -steps > view->offset) {
2186 scroll_steps = -view->offset;
2188 } else if (steps > 0) {
2189 if (view->lineno == view->lines - 1 &&
2190 view->lines > view->height) {
2191 scroll_steps = view->lines - view->offset - 1;
2192 if (scroll_steps >= view->height)
2193 scroll_steps -= view->height - 1;
2194 }
2195 }
2196 }
2198 if (!view_is_displayed(view)) {
2199 view->offset += scroll_steps;
2200 assert(0 <= view->offset && view->offset < view->lines);
2201 view->ops->select(view, &view->line[view->lineno]);
2202 return;
2203 }
2205 /* Repaint the old "current" line if we be scrolling */
2206 if (ABS(steps) < view->height)
2207 draw_view_line(view, view->lineno - steps - view->offset);
2209 if (scroll_steps) {
2210 do_scroll_view(view, scroll_steps);
2211 return;
2212 }
2214 /* Draw the current line */
2215 draw_view_line(view, view->lineno - view->offset);
2217 wnoutrefresh(view->win);
2218 report("");
2219 }
2222 /*
2223 * Searching
2224 */
2226 static void search_view(struct view *view, enum request request);
2228 static bool
2229 grep_text(struct view *view, const char *text[])
2230 {
2231 regmatch_t pmatch;
2232 size_t i;
2234 for (i = 0; text[i]; i++)
2235 if (*text[i] &&
2236 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2237 return TRUE;
2238 return FALSE;
2239 }
2241 static void
2242 select_view_line(struct view *view, unsigned long lineno)
2243 {
2244 unsigned long old_lineno = view->lineno;
2245 unsigned long old_offset = view->offset;
2247 if (goto_view_line(view, view->offset, lineno)) {
2248 if (view_is_displayed(view)) {
2249 if (old_offset != view->offset) {
2250 redraw_view(view);
2251 } else {
2252 draw_view_line(view, old_lineno - view->offset);
2253 draw_view_line(view, view->lineno - view->offset);
2254 wnoutrefresh(view->win);
2255 }
2256 } else {
2257 view->ops->select(view, &view->line[view->lineno]);
2258 }
2259 }
2260 }
2262 static void
2263 find_next(struct view *view, enum request request)
2264 {
2265 unsigned long lineno = view->lineno;
2266 int direction;
2268 if (!*view->grep) {
2269 if (!*opt_search)
2270 report("No previous search");
2271 else
2272 search_view(view, request);
2273 return;
2274 }
2276 switch (request) {
2277 case REQ_SEARCH:
2278 case REQ_FIND_NEXT:
2279 direction = 1;
2280 break;
2282 case REQ_SEARCH_BACK:
2283 case REQ_FIND_PREV:
2284 direction = -1;
2285 break;
2287 default:
2288 return;
2289 }
2291 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2292 lineno += direction;
2294 /* Note, lineno is unsigned long so will wrap around in which case it
2295 * will become bigger than view->lines. */
2296 for (; lineno < view->lines; lineno += direction) {
2297 if (view->ops->grep(view, &view->line[lineno])) {
2298 select_view_line(view, lineno);
2299 report("Line %ld matches '%s'", lineno + 1, view->grep);
2300 return;
2301 }
2302 }
2304 report("No match found for '%s'", view->grep);
2305 }
2307 static void
2308 search_view(struct view *view, enum request request)
2309 {
2310 int regex_err;
2312 if (view->regex) {
2313 regfree(view->regex);
2314 *view->grep = 0;
2315 } else {
2316 view->regex = calloc(1, sizeof(*view->regex));
2317 if (!view->regex)
2318 return;
2319 }
2321 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2322 if (regex_err != 0) {
2323 char buf[SIZEOF_STR] = "unknown error";
2325 regerror(regex_err, view->regex, buf, sizeof(buf));
2326 report("Search failed: %s", buf);
2327 return;
2328 }
2330 string_copy(view->grep, opt_search);
2332 find_next(view, request);
2333 }
2335 /*
2336 * Incremental updating
2337 */
2339 static void
2340 reset_view(struct view *view)
2341 {
2342 int i;
2344 for (i = 0; i < view->lines; i++)
2345 free(view->line[i].data);
2346 free(view->line);
2348 view->p_offset = view->offset;
2349 view->p_yoffset = view->yoffset;
2350 view->p_lineno = view->lineno;
2352 view->line = NULL;
2353 view->offset = 0;
2354 view->yoffset = 0;
2355 view->lines = 0;
2356 view->lineno = 0;
2357 view->vid[0] = 0;
2358 view->update_secs = 0;
2359 }
2361 static const char *
2362 format_arg(const char *name)
2363 {
2364 static struct {
2365 const char *name;
2366 size_t namelen;
2367 const char *value;
2368 const char *value_if_empty;
2369 } vars[] = {
2370 #define FORMAT_VAR(name, value, value_if_empty) \
2371 { name, STRING_SIZE(name), value, value_if_empty }
2372 FORMAT_VAR("%(directory)", opt_path, "."),
2373 FORMAT_VAR("%(file)", opt_file, ""),
2374 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2375 FORMAT_VAR("%(head)", ref_head, ""),
2376 FORMAT_VAR("%(commit)", ref_commit, ""),
2377 FORMAT_VAR("%(blob)", ref_blob, ""),
2378 FORMAT_VAR("%(branch)", ref_branch, ""),
2379 };
2380 int i;
2382 for (i = 0; i < ARRAY_SIZE(vars); i++)
2383 if (!strncmp(name, vars[i].name, vars[i].namelen))
2384 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2386 report("Unknown replacement: `%s`", name);
2387 return NULL;
2388 }
2390 static bool
2391 format_argv(const char ***dst_argv, const char *src_argv[], bool replace, bool first)
2392 {
2393 char buf[SIZEOF_STR];
2394 int argc;
2396 argv_free(*dst_argv);
2398 for (argc = 0; src_argv[argc]; argc++) {
2399 const char *arg = src_argv[argc];
2400 size_t bufpos = 0;
2402 if (!strcmp(arg, "%(fileargs)")) {
2403 if (!argv_append_array(dst_argv, opt_file_argv))
2404 break;
2405 continue;
2407 } else if (!strcmp(arg, "%(diffargs)")) {
2408 if (!argv_append_array(dst_argv, opt_diff_argv))
2409 break;
2410 continue;
2412 } else if (!strcmp(arg, "%(blameargs)")) {
2413 if (!argv_append_array(dst_argv, opt_blame_argv))
2414 break;
2415 continue;
2417 } else if (!strcmp(arg, "%(revargs)") ||
2418 (first && !strcmp(arg, "%(commit)"))) {
2419 if (!argv_append_array(dst_argv, opt_rev_argv))
2420 break;
2421 continue;
2422 }
2424 while (arg) {
2425 char *next = strstr(arg, "%(");
2426 int len = next - arg;
2427 const char *value;
2429 if (!next || !replace) {
2430 len = strlen(arg);
2431 value = "";
2433 } else {
2434 value = format_arg(next);
2436 if (!value) {
2437 return FALSE;
2438 }
2439 }
2441 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2442 return FALSE;
2444 arg = next && replace ? strchr(next, ')') + 1 : NULL;
2445 }
2447 if (!argv_append(dst_argv, buf))
2448 break;
2449 }
2451 return src_argv[argc] == NULL;
2452 }
2454 static bool
2455 restore_view_position(struct view *view)
2456 {
2457 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2458 return FALSE;
2460 /* Changing the view position cancels the restoring. */
2461 /* FIXME: Changing back to the first line is not detected. */
2462 if (view->offset != 0 || view->lineno != 0) {
2463 view->p_restore = FALSE;
2464 return FALSE;
2465 }
2467 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2468 view_is_displayed(view))
2469 werase(view->win);
2471 view->yoffset = view->p_yoffset;
2472 view->p_restore = FALSE;
2474 return TRUE;
2475 }
2477 static void
2478 end_update(struct view *view, bool force)
2479 {
2480 if (!view->pipe)
2481 return;
2482 while (!view->ops->read(view, NULL))
2483 if (!force)
2484 return;
2485 if (force)
2486 io_kill(view->pipe);
2487 io_done(view->pipe);
2488 view->pipe = NULL;
2489 }
2491 static void
2492 setup_update(struct view *view, const char *vid)
2493 {
2494 reset_view(view);
2495 string_copy_rev(view->vid, vid);
2496 view->pipe = &view->io;
2497 view->start_time = time(NULL);
2498 }
2500 static bool
2501 prepare_io(struct view *view, const char *dir, const char *argv[], bool replace)
2502 {
2503 view->dir = dir;
2504 return format_argv(&view->argv, argv, replace, !view->prev);
2505 }
2507 static bool
2508 start_update(struct view *view, const char **argv, const char *dir)
2509 {
2510 if (view->pipe)
2511 io_done(view->pipe);
2512 return prepare_io(view, dir, argv, FALSE) &&
2513 io_run(&view->io, IO_RD, dir, view->argv);
2514 }
2516 static bool
2517 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
2518 {
2519 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2520 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2522 if (!reload && !strcmp(view->vid, view->id))
2523 return TRUE;
2525 if (view->pipe)
2526 end_update(view, TRUE);
2528 if (!refresh) {
2529 if (!prepare_io(view, dir, argv, TRUE))
2530 return FALSE;
2532 /* Put the current ref_* value to the view title ref
2533 * member. This is needed by the blob view. Most other
2534 * views sets it automatically after loading because the
2535 * first line is a commit line. */
2536 string_copy_rev(view->ref, view->id);
2537 }
2539 if (view->argv && view->argv[0] &&
2540 !io_run(&view->io, IO_RD, view->dir, view->argv))
2541 return FALSE;
2542 else if (view->argv && !strcmp(view->argv[0], opt_cdup) &&
2543 !io_open(&view->io, "%s%s", opt_cdup, view->argv[1]))
2544 return FALSE;
2546 setup_update(view, view->id);
2548 return TRUE;
2549 }
2551 static bool
2552 view_open(struct view *view, enum open_flags flags)
2553 {
2554 return begin_update(view, NULL, NULL, flags);
2555 }
2557 static bool
2558 update_view(struct view *view)
2559 {
2560 char out_buffer[BUFSIZ * 2];
2561 char *line;
2562 /* Clear the view and redraw everything since the tree sorting
2563 * might have rearranged things. */
2564 bool redraw = view->lines == 0;
2565 bool can_read = TRUE;
2567 if (!view->pipe)
2568 return TRUE;
2570 if (!io_can_read(view->pipe, FALSE)) {
2571 if (view->lines == 0 && view_is_displayed(view)) {
2572 time_t secs = time(NULL) - view->start_time;
2574 if (secs > 1 && secs > view->update_secs) {
2575 if (view->update_secs == 0)
2576 redraw_view(view);
2577 update_view_title(view);
2578 view->update_secs = secs;
2579 }
2580 }
2581 return TRUE;
2582 }
2584 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2585 if (opt_iconv_in != ICONV_NONE) {
2586 ICONV_CONST char *inbuf = line;
2587 size_t inlen = strlen(line) + 1;
2589 char *outbuf = out_buffer;
2590 size_t outlen = sizeof(out_buffer);
2592 size_t ret;
2594 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2595 if (ret != (size_t) -1)
2596 line = out_buffer;
2597 }
2599 if (!view->ops->read(view, line)) {
2600 report("Allocation failure");
2601 end_update(view, TRUE);
2602 return FALSE;
2603 }
2604 }
2606 {
2607 unsigned long lines = view->lines;
2608 int digits;
2610 for (digits = 0; lines; digits++)
2611 lines /= 10;
2613 /* Keep the displayed view in sync with line number scaling. */
2614 if (digits != view->digits) {
2615 view->digits = digits;
2616 if (opt_line_number || view->type == VIEW_BLAME)
2617 redraw = TRUE;
2618 }
2619 }
2621 if (io_error(view->pipe)) {
2622 report("Failed to read: %s", io_strerror(view->pipe));
2623 end_update(view, TRUE);
2625 } else if (io_eof(view->pipe)) {
2626 if (view_is_displayed(view))
2627 report("");
2628 end_update(view, FALSE);
2629 }
2631 if (restore_view_position(view))
2632 redraw = TRUE;
2634 if (!view_is_displayed(view))
2635 return TRUE;
2637 if (redraw)
2638 redraw_view_from(view, 0);
2639 else
2640 redraw_view_dirty(view);
2642 /* Update the title _after_ the redraw so that if the redraw picks up a
2643 * commit reference in view->ref it'll be available here. */
2644 update_view_title(view);
2645 return TRUE;
2646 }
2648 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2650 static struct line *
2651 add_line_data(struct view *view, void *data, enum line_type type)
2652 {
2653 struct line *line;
2655 if (!realloc_lines(&view->line, view->lines, 1))
2656 return NULL;
2658 line = &view->line[view->lines++];
2659 memset(line, 0, sizeof(*line));
2660 line->type = type;
2661 line->data = data;
2662 line->dirty = 1;
2664 return line;
2665 }
2667 static struct line *
2668 add_line_text(struct view *view, const char *text, enum line_type type)
2669 {
2670 char *data = text ? strdup(text) : NULL;
2672 return data ? add_line_data(view, data, type) : NULL;
2673 }
2675 static struct line *
2676 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2677 {
2678 char buf[SIZEOF_STR];
2679 va_list args;
2681 va_start(args, fmt);
2682 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2683 buf[0] = 0;
2684 va_end(args);
2686 return buf[0] ? add_line_text(view, buf, type) : NULL;
2687 }
2689 /*
2690 * View opening
2691 */
2693 static void
2694 load_view(struct view *view, enum open_flags flags)
2695 {
2696 if (view->pipe)
2697 end_update(view, TRUE);
2698 if (!view->ops->open(view, flags)) {
2699 report("Failed to load %s view", view->name);
2700 return;
2701 }
2702 restore_view_position(view);
2704 if (view->pipe && view->lines == 0) {
2705 /* Clear the old view and let the incremental updating refill
2706 * the screen. */
2707 werase(view->win);
2708 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2709 report("");
2710 } else if (view_is_displayed(view)) {
2711 redraw_view(view);
2712 report("");
2713 }
2714 }
2716 #define refresh_view(view) load_view(view, OPEN_REFRESH)
2718 static void
2719 open_view(struct view *prev, enum request request, enum open_flags flags)
2720 {
2721 bool split = !!(flags & OPEN_SPLIT);
2722 bool reload = !!(flags & (OPEN_RELOAD | OPEN_PREPARED));
2723 struct view *view = VIEW(request);
2724 int nviews = displayed_views();
2726 assert(flags ^ OPEN_REFRESH);
2728 if (view == prev && nviews == 1 && !reload) {
2729 report("Already in %s view", view->name);
2730 return;
2731 }
2733 if (view->git_dir && !opt_git_dir[0]) {
2734 report("The %s view is disabled in pager view", view->name);
2735 return;
2736 }
2738 if (split) {
2739 display[1] = view;
2740 current_view = 1;
2741 view->parent = prev;
2742 resize_display();
2744 if (prev->lineno - prev->offset >= prev->height) {
2745 /* Take the title line into account. */
2746 int lines = prev->lineno - prev->offset - prev->height + 1;
2748 /* Scroll the view that was split if the current line is
2749 * outside the new limited view. */
2750 do_scroll_view(prev, lines);
2751 }
2753 if (view != prev && view_is_displayed(prev)) {
2754 /* "Blur" the previous view. */
2755 update_view_title(prev);
2756 }
2757 } else {
2758 /* Maximize the current view. */
2759 memset(display, 0, sizeof(display));
2760 current_view = 0;
2761 display[current_view] = view;
2762 resize_display();
2763 }
2765 /* No prev signals that this is the first loaded view. */
2766 if (prev && view != prev) {
2767 view->prev = prev;
2768 }
2770 load_view(view, flags);
2771 }
2773 static void
2774 open_argv(struct view *prev, struct view *view, const char *argv[], const char *dir, enum open_flags flags)
2775 {
2776 enum request request = view - views + REQ_OFFSET + 1;
2778 if (view->pipe)
2779 end_update(view, TRUE);
2780 if (!prepare_io(view, dir, argv, FALSE)) {
2781 report("Failed to open %s view: %s", view->name, io_strerror(&view->io));
2782 } else {
2783 open_view(prev, request, flags | OPEN_PREPARED);
2784 }
2785 }
2787 static void
2788 open_file(struct view *prev, struct view *view, const char *file, enum open_flags flags)
2789 {
2790 enum request request = view - views + REQ_OFFSET + 1;
2791 const char *file_argv[] = { opt_cdup, file , NULL };
2793 if (view->pipe)
2794 end_update(view, TRUE);
2795 if (!argv_copy(&view->argv, file_argv)) {
2796 report("Failed to load %s: out of memory", file);
2797 } else {
2798 open_view(prev, request, flags | OPEN_PREPARED);
2799 }
2800 }
2802 static void
2803 open_external_viewer(const char *argv[], const char *dir)
2804 {
2805 def_prog_mode(); /* save current tty modes */
2806 endwin(); /* restore original tty modes */
2807 io_run_fg(argv, dir);
2808 fprintf(stderr, "Press Enter to continue");
2809 getc(opt_tty);
2810 reset_prog_mode();
2811 redraw_display(TRUE);
2812 }
2814 static void
2815 open_mergetool(const char *file)
2816 {
2817 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2819 open_external_viewer(mergetool_argv, opt_cdup);
2820 }
2822 static void
2823 open_editor(const char *file)
2824 {
2825 const char *editor_argv[] = { "vi", file, NULL };
2826 const char *editor;
2828 editor = getenv("GIT_EDITOR");
2829 if (!editor && *opt_editor)
2830 editor = opt_editor;
2831 if (!editor)
2832 editor = getenv("VISUAL");
2833 if (!editor)
2834 editor = getenv("EDITOR");
2835 if (!editor)
2836 editor = "vi";
2838 editor_argv[0] = editor;
2839 open_external_viewer(editor_argv, opt_cdup);
2840 }
2842 static void
2843 open_run_request(enum request request)
2844 {
2845 struct run_request *req = get_run_request(request);
2846 const char **argv = NULL;
2848 if (!req) {
2849 report("Unknown run request");
2850 return;
2851 }
2853 if (format_argv(&argv, req->argv, TRUE, FALSE))
2854 open_external_viewer(argv, NULL);
2855 if (argv)
2856 argv_free(argv);
2857 free(argv);
2858 }
2860 /*
2861 * User request switch noodle
2862 */
2864 static int
2865 view_driver(struct view *view, enum request request)
2866 {
2867 int i;
2869 if (request == REQ_NONE)
2870 return TRUE;
2872 if (request > REQ_NONE) {
2873 open_run_request(request);
2874 view_request(view, REQ_REFRESH);
2875 return TRUE;
2876 }
2878 request = view_request(view, request);
2879 if (request == REQ_NONE)
2880 return TRUE;
2882 switch (request) {
2883 case REQ_MOVE_UP:
2884 case REQ_MOVE_DOWN:
2885 case REQ_MOVE_PAGE_UP:
2886 case REQ_MOVE_PAGE_DOWN:
2887 case REQ_MOVE_FIRST_LINE:
2888 case REQ_MOVE_LAST_LINE:
2889 move_view(view, request);
2890 break;
2892 case REQ_SCROLL_FIRST_COL:
2893 case REQ_SCROLL_LEFT:
2894 case REQ_SCROLL_RIGHT:
2895 case REQ_SCROLL_LINE_DOWN:
2896 case REQ_SCROLL_LINE_UP:
2897 case REQ_SCROLL_PAGE_DOWN:
2898 case REQ_SCROLL_PAGE_UP:
2899 scroll_view(view, request);
2900 break;
2902 case REQ_VIEW_BLAME:
2903 if (!opt_file[0]) {
2904 report("No file chosen, press %s to open tree view",
2905 get_key(view->keymap, REQ_VIEW_TREE));
2906 break;
2907 }
2908 open_view(view, request, OPEN_DEFAULT);
2909 break;
2911 case REQ_VIEW_BLOB:
2912 if (!ref_blob[0]) {
2913 report("No file chosen, press %s to open tree view",
2914 get_key(view->keymap, REQ_VIEW_TREE));
2915 break;
2916 }
2917 open_view(view, request, OPEN_DEFAULT);
2918 break;
2920 case REQ_VIEW_PAGER:
2921 if (view == NULL) {
2922 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2923 die("Failed to open stdin");
2924 open_view(view, request, OPEN_PREPARED);
2925 break;
2926 }
2928 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2929 report("No pager content, press %s to run command from prompt",
2930 get_key(view->keymap, REQ_PROMPT));
2931 break;
2932 }
2933 open_view(view, request, OPEN_DEFAULT);
2934 break;
2936 case REQ_VIEW_STAGE:
2937 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2938 report("No stage content, press %s to open the status view and choose file",
2939 get_key(view->keymap, REQ_VIEW_STATUS));
2940 break;
2941 }
2942 open_view(view, request, OPEN_DEFAULT);
2943 break;
2945 case REQ_VIEW_STATUS:
2946 if (opt_is_inside_work_tree == FALSE) {
2947 report("The status view requires a working tree");
2948 break;
2949 }
2950 open_view(view, request, OPEN_DEFAULT);
2951 break;
2953 case REQ_VIEW_MAIN:
2954 case REQ_VIEW_DIFF:
2955 case REQ_VIEW_LOG:
2956 case REQ_VIEW_TREE:
2957 case REQ_VIEW_HELP:
2958 case REQ_VIEW_BRANCH:
2959 open_view(view, request, OPEN_DEFAULT);
2960 break;
2962 case REQ_NEXT:
2963 case REQ_PREVIOUS:
2964 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2966 if (view->parent) {
2967 int line;
2969 view = view->parent;
2970 line = view->lineno;
2971 move_view(view, request);
2972 if (view_is_displayed(view))
2973 update_view_title(view);
2974 if (line != view->lineno)
2975 view_request(view, REQ_ENTER);
2976 } else {
2977 move_view(view, request);
2978 }
2979 break;
2981 case REQ_VIEW_NEXT:
2982 {
2983 int nviews = displayed_views();
2984 int next_view = (current_view + 1) % nviews;
2986 if (next_view == current_view) {
2987 report("Only one view is displayed");
2988 break;
2989 }
2991 current_view = next_view;
2992 /* Blur out the title of the previous view. */
2993 update_view_title(view);
2994 report("");
2995 break;
2996 }
2997 case REQ_REFRESH:
2998 report("Refreshing is not yet supported for the %s view", view->name);
2999 break;
3001 case REQ_MAXIMIZE:
3002 if (displayed_views() == 2)
3003 maximize_view(view);
3004 break;
3006 case REQ_OPTIONS:
3007 case REQ_TOGGLE_LINENO:
3008 case REQ_TOGGLE_DATE:
3009 case REQ_TOGGLE_AUTHOR:
3010 case REQ_TOGGLE_GRAPHIC:
3011 case REQ_TOGGLE_REV_GRAPH:
3012 case REQ_TOGGLE_REFS:
3013 toggle_option(request);
3014 break;
3016 case REQ_TOGGLE_SORT_FIELD:
3017 case REQ_TOGGLE_SORT_ORDER:
3018 report("Sorting is not yet supported for the %s view", view->name);
3019 break;
3021 case REQ_SEARCH:
3022 case REQ_SEARCH_BACK:
3023 search_view(view, request);
3024 break;
3026 case REQ_FIND_NEXT:
3027 case REQ_FIND_PREV:
3028 find_next(view, request);
3029 break;
3031 case REQ_STOP_LOADING:
3032 foreach_view(view, i) {
3033 if (view->pipe)
3034 report("Stopped loading the %s view", view->name),
3035 end_update(view, TRUE);
3036 }
3037 break;
3039 case REQ_SHOW_VERSION:
3040 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3041 return TRUE;
3043 case REQ_SCREEN_REDRAW:
3044 redraw_display(TRUE);
3045 break;
3047 case REQ_EDIT:
3048 report("Nothing to edit");
3049 break;
3051 case REQ_ENTER:
3052 report("Nothing to enter");
3053 break;
3055 case REQ_VIEW_CLOSE:
3056 /* XXX: Mark closed views by letting view->prev point to the
3057 * view itself. Parents to closed view should never be
3058 * followed. */
3059 if (view->prev && view->prev != view) {
3060 maximize_view(view->prev);
3061 view->prev = view;
3062 break;
3063 }
3064 /* Fall-through */
3065 case REQ_QUIT:
3066 return FALSE;
3068 default:
3069 report("Unknown key, press %s for help",
3070 get_key(view->keymap, REQ_VIEW_HELP));
3071 return TRUE;
3072 }
3074 return TRUE;
3075 }
3078 /*
3079 * View backend utilities
3080 */
3082 enum sort_field {
3083 ORDERBY_NAME,
3084 ORDERBY_DATE,
3085 ORDERBY_AUTHOR,
3086 };
3088 struct sort_state {
3089 const enum sort_field *fields;
3090 size_t size, current;
3091 bool reverse;
3092 };
3094 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3095 #define get_sort_field(state) ((state).fields[(state).current])
3096 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3098 static void
3099 sort_view(struct view *view, enum request request, struct sort_state *state,
3100 int (*compare)(const void *, const void *))
3101 {
3102 switch (request) {
3103 case REQ_TOGGLE_SORT_FIELD:
3104 state->current = (state->current + 1) % state->size;
3105 break;
3107 case REQ_TOGGLE_SORT_ORDER:
3108 state->reverse = !state->reverse;
3109 break;
3110 default:
3111 die("Not a sort request");
3112 }
3114 qsort(view->line, view->lines, sizeof(*view->line), compare);
3115 redraw_view(view);
3116 }
3118 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3120 /* Small author cache to reduce memory consumption. It uses binary
3121 * search to lookup or find place to position new entries. No entries
3122 * are ever freed. */
3123 static const char *
3124 get_author(const char *name)
3125 {
3126 static const char **authors;
3127 static size_t authors_size;
3128 int from = 0, to = authors_size - 1;
3130 while (from <= to) {
3131 size_t pos = (to + from) / 2;
3132 int cmp = strcmp(name, authors[pos]);
3134 if (!cmp)
3135 return authors[pos];
3137 if (cmp < 0)
3138 to = pos - 1;
3139 else
3140 from = pos + 1;
3141 }
3143 if (!realloc_authors(&authors, authors_size, 1))
3144 return NULL;
3145 name = strdup(name);
3146 if (!name)
3147 return NULL;
3149 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3150 authors[from] = name;
3151 authors_size++;
3153 return name;
3154 }
3156 static void
3157 parse_timesec(struct time *time, const char *sec)
3158 {
3159 time->sec = (time_t) atol(sec);
3160 }
3162 static void
3163 parse_timezone(struct time *time, const char *zone)
3164 {
3165 long tz;
3167 tz = ('0' - zone[1]) * 60 * 60 * 10;
3168 tz += ('0' - zone[2]) * 60 * 60;
3169 tz += ('0' - zone[3]) * 60 * 10;
3170 tz += ('0' - zone[4]) * 60;
3172 if (zone[0] == '-')
3173 tz = -tz;
3175 time->tz = tz;
3176 time->sec -= tz;
3177 }
3179 /* Parse author lines where the name may be empty:
3180 * author <email@address.tld> 1138474660 +0100
3181 */
3182 static void
3183 parse_author_line(char *ident, const char **author, struct time *time)
3184 {
3185 char *nameend = strchr(ident, '<');
3186 char *emailend = strchr(ident, '>');
3188 if (nameend && emailend)
3189 *nameend = *emailend = 0;
3190 ident = chomp_string(ident);
3191 if (!*ident) {
3192 if (nameend)
3193 ident = chomp_string(nameend + 1);
3194 if (!*ident)
3195 ident = "Unknown";
3196 }
3198 *author = get_author(ident);
3200 /* Parse epoch and timezone */
3201 if (emailend && emailend[1] == ' ') {
3202 char *secs = emailend + 2;
3203 char *zone = strchr(secs, ' ');
3205 parse_timesec(time, secs);
3207 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3208 parse_timezone(time, zone + 1);
3209 }
3210 }
3212 /*
3213 * Pager backend
3214 */
3216 static bool
3217 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3218 {
3219 if (opt_line_number && draw_lineno(view, lineno))
3220 return TRUE;
3222 draw_text(view, line->type, line->data);
3223 return TRUE;
3224 }
3226 static bool
3227 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3228 {
3229 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3230 char ref[SIZEOF_STR];
3232 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3233 return TRUE;
3235 /* This is the only fatal call, since it can "corrupt" the buffer. */
3236 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3237 return FALSE;
3239 return TRUE;
3240 }
3242 static void
3243 add_pager_refs(struct view *view, struct line *line)
3244 {
3245 char buf[SIZEOF_STR];
3246 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3247 struct ref_list *list;
3248 size_t bufpos = 0, i;
3249 const char *sep = "Refs: ";
3250 bool is_tag = FALSE;
3252 assert(line->type == LINE_COMMIT);
3254 list = get_ref_list(commit_id);
3255 if (!list) {
3256 if (view->type == VIEW_DIFF)
3257 goto try_add_describe_ref;
3258 return;
3259 }
3261 for (i = 0; i < list->size; i++) {
3262 struct ref *ref = list->refs[i];
3263 const char *fmt = ref->tag ? "%s[%s]" :
3264 ref->remote ? "%s<%s>" : "%s%s";
3266 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3267 return;
3268 sep = ", ";
3269 if (ref->tag)
3270 is_tag = TRUE;
3271 }
3273 if (!is_tag && view->type == VIEW_DIFF) {
3274 try_add_describe_ref:
3275 /* Add <tag>-g<commit_id> "fake" reference. */
3276 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3277 return;
3278 }
3280 if (bufpos == 0)
3281 return;
3283 add_line_text(view, buf, LINE_PP_REFS);
3284 }
3286 static bool
3287 pager_read(struct view *view, char *data)
3288 {
3289 struct line *line;
3291 if (!data)
3292 return TRUE;
3294 line = add_line_text(view, data, get_line_type(data));
3295 if (!line)
3296 return FALSE;
3298 if (line->type == LINE_COMMIT &&
3299 (view->type == VIEW_DIFF ||
3300 view->type == VIEW_LOG))
3301 add_pager_refs(view, line);
3303 return TRUE;
3304 }
3306 static enum request
3307 pager_request(struct view *view, enum request request, struct line *line)
3308 {
3309 int split = 0;
3311 if (request != REQ_ENTER)
3312 return request;
3314 if (line->type == LINE_COMMIT &&
3315 (view->type == VIEW_LOG ||
3316 view->type == VIEW_PAGER)) {
3317 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3318 split = 1;
3319 }
3321 /* Always scroll the view even if it was split. That way
3322 * you can use Enter to scroll through the log view and
3323 * split open each commit diff. */
3324 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3326 /* FIXME: A minor workaround. Scrolling the view will call report("")
3327 * but if we are scrolling a non-current view this won't properly
3328 * update the view title. */
3329 if (split)
3330 update_view_title(view);
3332 return REQ_NONE;
3333 }
3335 static bool
3336 pager_grep(struct view *view, struct line *line)
3337 {
3338 const char *text[] = { line->data, NULL };
3340 return grep_text(view, text);
3341 }
3343 static void
3344 pager_select(struct view *view, struct line *line)
3345 {
3346 if (line->type == LINE_COMMIT) {
3347 char *text = (char *)line->data + STRING_SIZE("commit ");
3349 if (view->type != VIEW_PAGER)
3350 string_copy_rev(view->ref, text);
3351 string_copy_rev(ref_commit, text);
3352 }
3353 }
3355 static struct view_ops pager_ops = {
3356 "line",
3357 view_open,
3358 pager_read,
3359 pager_draw,
3360 pager_request,
3361 pager_grep,
3362 pager_select,
3363 };
3365 static bool
3366 log_open(struct view *view, enum open_flags flags)
3367 {
3368 static const char *log_argv[] = {
3369 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3370 };
3372 return begin_update(view, NULL, log_argv, flags);
3373 }
3375 static enum request
3376 log_request(struct view *view, enum request request, struct line *line)
3377 {
3378 switch (request) {
3379 case REQ_REFRESH:
3380 load_refs();
3381 refresh_view(view);
3382 return REQ_NONE;
3383 default:
3384 return pager_request(view, request, line);
3385 }
3386 }
3388 static struct view_ops log_ops = {
3389 "line",
3390 log_open,
3391 pager_read,
3392 pager_draw,
3393 log_request,
3394 pager_grep,
3395 pager_select,
3396 };
3398 static bool
3399 diff_open(struct view *view, enum open_flags flags)
3400 {
3401 static const char *diff_argv[] = {
3402 "git", "show", "--pretty=fuller", "--no-color", "--root",
3403 "--patch-with-stat", "--find-copies-harder", "-C",
3404 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3405 };
3407 return begin_update(view, NULL, diff_argv, flags);
3408 }
3410 static bool
3411 diff_read(struct view *view, char *data)
3412 {
3413 if (!data) {
3414 /* Fall back to retry if no diff will be shown. */
3415 if (view->lines == 0 && opt_file_argv) {
3416 int pos = argv_size(view->argv)
3417 - argv_size(opt_file_argv) - 1;
3419 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3420 for (; view->argv[pos]; pos++) {
3421 free((void *) view->argv[pos]);
3422 view->argv[pos] = NULL;
3423 }
3425 if (view->pipe)
3426 io_done(view->pipe);
3427 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3428 return FALSE;
3429 }
3430 }
3431 return TRUE;
3432 }
3434 return pager_read(view, data);
3435 }
3437 static struct view_ops diff_ops = {
3438 "line",
3439 diff_open,
3440 diff_read,
3441 pager_draw,
3442 pager_request,
3443 pager_grep,
3444 pager_select,
3445 };
3447 /*
3448 * Help backend
3449 */
3451 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
3453 static bool
3454 help_open_keymap_title(struct view *view, enum keymap keymap)
3455 {
3456 struct line *line;
3458 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3459 help_keymap_hidden[keymap] ? '+' : '-',
3460 enum_name(keymap_table[keymap]));
3461 if (line)
3462 line->other = keymap;
3464 return help_keymap_hidden[keymap];
3465 }
3467 static void
3468 help_open_keymap(struct view *view, enum keymap keymap)
3469 {
3470 const char *group = NULL;
3471 char buf[SIZEOF_STR];
3472 size_t bufpos;
3473 bool add_title = TRUE;
3474 int i;
3476 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3477 const char *key = NULL;
3479 if (req_info[i].request == REQ_NONE)
3480 continue;
3482 if (!req_info[i].request) {
3483 group = req_info[i].help;
3484 continue;
3485 }
3487 key = get_keys(keymap, req_info[i].request, TRUE);
3488 if (!key || !*key)
3489 continue;
3491 if (add_title && help_open_keymap_title(view, keymap))
3492 return;
3493 add_title = FALSE;
3495 if (group) {
3496 add_line_text(view, group, LINE_HELP_GROUP);
3497 group = NULL;
3498 }
3500 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3501 enum_name(req_info[i]), req_info[i].help);
3502 }
3504 group = "External commands:";
3506 for (i = 0; i < run_requests; i++) {
3507 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3508 const char *key;
3509 int argc;
3511 if (!req || req->keymap != keymap)
3512 continue;
3514 key = get_key_name(req->key);
3515 if (!*key)
3516 key = "(no key defined)";
3518 if (add_title && help_open_keymap_title(view, keymap))
3519 return;
3520 if (group) {
3521 add_line_text(view, group, LINE_HELP_GROUP);
3522 group = NULL;
3523 }
3525 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3526 if (!string_format_from(buf, &bufpos, "%s%s",
3527 argc ? " " : "", req->argv[argc]))
3528 return;
3530 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3531 }
3532 }
3534 static bool
3535 help_open(struct view *view, enum open_flags flags)
3536 {
3537 enum keymap keymap;
3539 reset_view(view);
3540 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3541 add_line_text(view, "", LINE_DEFAULT);
3543 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
3544 help_open_keymap(view, keymap);
3546 return TRUE;
3547 }
3549 static enum request
3550 help_request(struct view *view, enum request request, struct line *line)
3551 {
3552 switch (request) {
3553 case REQ_ENTER:
3554 if (line->type == LINE_HELP_KEYMAP) {
3555 help_keymap_hidden[line->other] =
3556 !help_keymap_hidden[line->other];
3557 refresh_view(view);
3558 }
3560 return REQ_NONE;
3561 default:
3562 return pager_request(view, request, line);
3563 }
3564 }
3566 static struct view_ops help_ops = {
3567 "line",
3568 help_open,
3569 NULL,
3570 pager_draw,
3571 help_request,
3572 pager_grep,
3573 pager_select,
3574 };
3577 /*
3578 * Tree backend
3579 */
3581 struct tree_stack_entry {
3582 struct tree_stack_entry *prev; /* Entry below this in the stack */
3583 unsigned long lineno; /* Line number to restore */
3584 char *name; /* Position of name in opt_path */
3585 };
3587 /* The top of the path stack. */
3588 static struct tree_stack_entry *tree_stack = NULL;
3589 unsigned long tree_lineno = 0;
3591 static void
3592 pop_tree_stack_entry(void)
3593 {
3594 struct tree_stack_entry *entry = tree_stack;
3596 tree_lineno = entry->lineno;
3597 entry->name[0] = 0;
3598 tree_stack = entry->prev;
3599 free(entry);
3600 }
3602 static void
3603 push_tree_stack_entry(const char *name, unsigned long lineno)
3604 {
3605 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3606 size_t pathlen = strlen(opt_path);
3608 if (!entry)
3609 return;
3611 entry->prev = tree_stack;
3612 entry->name = opt_path + pathlen;
3613 tree_stack = entry;
3615 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3616 pop_tree_stack_entry();
3617 return;
3618 }
3620 /* Move the current line to the first tree entry. */
3621 tree_lineno = 1;
3622 entry->lineno = lineno;
3623 }
3625 /* Parse output from git-ls-tree(1):
3626 *
3627 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3628 */
3630 #define SIZEOF_TREE_ATTR \
3631 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3633 #define SIZEOF_TREE_MODE \
3634 STRING_SIZE("100644 ")
3636 #define TREE_ID_OFFSET \
3637 STRING_SIZE("100644 blob ")
3639 struct tree_entry {
3640 char id[SIZEOF_REV];
3641 mode_t mode;
3642 struct time time; /* Date from the author ident. */
3643 const char *author; /* Author of the commit. */
3644 char name[1];
3645 };
3647 static const char *
3648 tree_path(const struct line *line)
3649 {
3650 return ((struct tree_entry *) line->data)->name;
3651 }
3653 static int
3654 tree_compare_entry(const struct line *line1, const struct line *line2)
3655 {
3656 if (line1->type != line2->type)
3657 return line1->type == LINE_TREE_DIR ? -1 : 1;
3658 return strcmp(tree_path(line1), tree_path(line2));
3659 }
3661 static const enum sort_field tree_sort_fields[] = {
3662 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3663 };
3664 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3666 static int
3667 tree_compare(const void *l1, const void *l2)
3668 {
3669 const struct line *line1 = (const struct line *) l1;
3670 const struct line *line2 = (const struct line *) l2;
3671 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3672 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3674 if (line1->type == LINE_TREE_HEAD)
3675 return -1;
3676 if (line2->type == LINE_TREE_HEAD)
3677 return 1;
3679 switch (get_sort_field(tree_sort_state)) {
3680 case ORDERBY_DATE:
3681 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3683 case ORDERBY_AUTHOR:
3684 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3686 case ORDERBY_NAME:
3687 default:
3688 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3689 }
3690 }
3693 static struct line *
3694 tree_entry(struct view *view, enum line_type type, const char *path,
3695 const char *mode, const char *id)
3696 {
3697 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3698 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3700 if (!entry || !line) {
3701 free(entry);
3702 return NULL;
3703 }
3705 strncpy(entry->name, path, strlen(path));
3706 if (mode)
3707 entry->mode = strtoul(mode, NULL, 8);
3708 if (id)
3709 string_copy_rev(entry->id, id);
3711 return line;
3712 }
3714 static bool
3715 tree_read_date(struct view *view, char *text, bool *read_date)
3716 {
3717 static const char *author_name;
3718 static struct time author_time;
3720 if (!text && *read_date) {
3721 *read_date = FALSE;
3722 return TRUE;
3724 } else if (!text) {
3725 char *path = *opt_path ? opt_path : ".";
3726 /* Find next entry to process */
3727 const char *log_file[] = {
3728 "git", "log", "--no-color", "--pretty=raw",
3729 "--cc", "--raw", view->id, "--", path, NULL
3730 };
3732 if (!view->lines) {
3733 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3734 report("Tree is empty");
3735 return TRUE;
3736 }
3738 if (!start_update(view, log_file, opt_cdup)) {
3739 report("Failed to load tree data");
3740 return TRUE;
3741 }
3743 *read_date = TRUE;
3744 return FALSE;
3746 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3747 parse_author_line(text + STRING_SIZE("author "),
3748 &author_name, &author_time);
3750 } else if (*text == ':') {
3751 char *pos;
3752 size_t annotated = 1;
3753 size_t i;
3755 pos = strchr(text, '\t');
3756 if (!pos)
3757 return TRUE;
3758 text = pos + 1;
3759 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3760 text += strlen(opt_path);
3761 pos = strchr(text, '/');
3762 if (pos)
3763 *pos = 0;
3765 for (i = 1; i < view->lines; i++) {
3766 struct line *line = &view->line[i];
3767 struct tree_entry *entry = line->data;
3769 annotated += !!entry->author;
3770 if (entry->author || strcmp(entry->name, text))
3771 continue;
3773 entry->author = author_name;
3774 entry->time = author_time;
3775 line->dirty = 1;
3776 break;
3777 }
3779 if (annotated == view->lines)
3780 io_kill(view->pipe);
3781 }
3782 return TRUE;
3783 }
3785 static bool
3786 tree_read(struct view *view, char *text)
3787 {
3788 static bool read_date = FALSE;
3789 struct tree_entry *data;
3790 struct line *entry, *line;
3791 enum line_type type;
3792 size_t textlen = text ? strlen(text) : 0;
3793 char *path = text + SIZEOF_TREE_ATTR;
3795 if (read_date || !text)
3796 return tree_read_date(view, text, &read_date);
3798 if (textlen <= SIZEOF_TREE_ATTR)
3799 return FALSE;
3800 if (view->lines == 0 &&
3801 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3802 return FALSE;
3804 /* Strip the path part ... */
3805 if (*opt_path) {
3806 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3807 size_t striplen = strlen(opt_path);
3809 if (pathlen > striplen)
3810 memmove(path, path + striplen,
3811 pathlen - striplen + 1);
3813 /* Insert "link" to parent directory. */
3814 if (view->lines == 1 &&
3815 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3816 return FALSE;
3817 }
3819 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3820 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3821 if (!entry)
3822 return FALSE;
3823 data = entry->data;
3825 /* Skip "Directory ..." and ".." line. */
3826 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3827 if (tree_compare_entry(line, entry) <= 0)
3828 continue;
3830 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3832 line->data = data;
3833 line->type = type;
3834 for (; line <= entry; line++)
3835 line->dirty = line->cleareol = 1;
3836 return TRUE;
3837 }
3839 if (tree_lineno > view->lineno) {
3840 view->lineno = tree_lineno;
3841 tree_lineno = 0;
3842 }
3844 return TRUE;
3845 }
3847 static bool
3848 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3849 {
3850 struct tree_entry *entry = line->data;
3852 if (line->type == LINE_TREE_HEAD) {
3853 if (draw_text(view, line->type, "Directory path /"))
3854 return TRUE;
3855 } else {
3856 if (draw_mode(view, entry->mode))
3857 return TRUE;
3859 if (draw_author(view, entry->author))
3860 return TRUE;
3862 if (draw_date(view, &entry->time))
3863 return TRUE;
3864 }
3866 draw_text(view, line->type, entry->name);
3867 return TRUE;
3868 }
3870 static void
3871 open_blob_editor(const char *id)
3872 {
3873 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3874 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3875 int fd = mkstemp(file);
3877 if (fd == -1)
3878 report("Failed to create temporary file");
3879 else if (!io_run_append(blob_argv, fd))
3880 report("Failed to save blob data to file");
3881 else
3882 open_editor(file);
3883 if (fd != -1)
3884 unlink(file);
3885 }
3887 static enum request
3888 tree_request(struct view *view, enum request request, struct line *line)
3889 {
3890 enum open_flags flags;
3891 struct tree_entry *entry = line->data;
3893 switch (request) {
3894 case REQ_VIEW_BLAME:
3895 if (line->type != LINE_TREE_FILE) {
3896 report("Blame only supported for files");
3897 return REQ_NONE;
3898 }
3900 string_copy(opt_ref, view->vid);
3901 return request;
3903 case REQ_EDIT:
3904 if (line->type != LINE_TREE_FILE) {
3905 report("Edit only supported for files");
3906 } else if (!is_head_commit(view->vid)) {
3907 open_blob_editor(entry->id);
3908 } else {
3909 open_editor(opt_file);
3910 }
3911 return REQ_NONE;
3913 case REQ_TOGGLE_SORT_FIELD:
3914 case REQ_TOGGLE_SORT_ORDER:
3915 sort_view(view, request, &tree_sort_state, tree_compare);
3916 return REQ_NONE;
3918 case REQ_PARENT:
3919 if (!*opt_path) {
3920 /* quit view if at top of tree */
3921 return REQ_VIEW_CLOSE;
3922 }
3923 /* fake 'cd ..' */
3924 line = &view->line[1];
3925 break;
3927 case REQ_ENTER:
3928 break;
3930 default:
3931 return request;
3932 }
3934 /* Cleanup the stack if the tree view is at a different tree. */
3935 while (!*opt_path && tree_stack)
3936 pop_tree_stack_entry();
3938 switch (line->type) {
3939 case LINE_TREE_DIR:
3940 /* Depending on whether it is a subdirectory or parent link
3941 * mangle the path buffer. */
3942 if (line == &view->line[1] && *opt_path) {
3943 pop_tree_stack_entry();
3945 } else {
3946 const char *basename = tree_path(line);
3948 push_tree_stack_entry(basename, view->lineno);
3949 }
3951 /* Trees and subtrees share the same ID, so they are not not
3952 * unique like blobs. */
3953 flags = OPEN_RELOAD;
3954 request = REQ_VIEW_TREE;
3955 break;
3957 case LINE_TREE_FILE:
3958 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3959 request = REQ_VIEW_BLOB;
3960 break;
3962 default:
3963 return REQ_NONE;
3964 }
3966 open_view(view, request, flags);
3967 if (request == REQ_VIEW_TREE)
3968 view->lineno = tree_lineno;
3970 return REQ_NONE;
3971 }
3973 static bool
3974 tree_grep(struct view *view, struct line *line)
3975 {
3976 struct tree_entry *entry = line->data;
3977 const char *text[] = {
3978 entry->name,
3979 opt_author ? entry->author : "",
3980 mkdate(&entry->time, opt_date),
3981 NULL
3982 };
3984 return grep_text(view, text);
3985 }
3987 static void
3988 tree_select(struct view *view, struct line *line)
3989 {
3990 struct tree_entry *entry = line->data;
3992 if (line->type == LINE_TREE_FILE) {
3993 string_copy_rev(ref_blob, entry->id);
3994 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3996 } else if (line->type != LINE_TREE_DIR) {
3997 return;
3998 }
4000 string_copy_rev(view->ref, entry->id);
4001 }
4003 static bool
4004 tree_open(struct view *view, enum open_flags flags)
4005 {
4006 static const char *tree_argv[] = {
4007 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4008 };
4010 if (view->lines == 0 && opt_prefix[0]) {
4011 char *pos = opt_prefix;
4013 while (pos && *pos) {
4014 char *end = strchr(pos, '/');
4016 if (end)
4017 *end = 0;
4018 push_tree_stack_entry(pos, 0);
4019 pos = end;
4020 if (end) {
4021 *end = '/';
4022 pos++;
4023 }
4024 }
4026 } else if (strcmp(view->vid, view->id)) {
4027 opt_path[0] = 0;
4028 }
4030 return begin_update(view, opt_cdup, tree_argv, flags);
4031 }
4033 static struct view_ops tree_ops = {
4034 "file",
4035 tree_open,
4036 tree_read,
4037 tree_draw,
4038 tree_request,
4039 tree_grep,
4040 tree_select,
4041 };
4043 static bool
4044 blob_open(struct view *view, enum open_flags flags)
4045 {
4046 static const char *blob_argv[] = {
4047 "git", "cat-file", "blob", "%(blob)", NULL
4048 };
4050 return begin_update(view, NULL, blob_argv, flags);
4051 }
4053 static bool
4054 blob_read(struct view *view, char *line)
4055 {
4056 if (!line)
4057 return TRUE;
4058 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4059 }
4061 static enum request
4062 blob_request(struct view *view, enum request request, struct line *line)
4063 {
4064 switch (request) {
4065 case REQ_EDIT:
4066 open_blob_editor(view->vid);
4067 return REQ_NONE;
4068 default:
4069 return pager_request(view, request, line);
4070 }
4071 }
4073 static struct view_ops blob_ops = {
4074 "line",
4075 blob_open,
4076 blob_read,
4077 pager_draw,
4078 blob_request,
4079 pager_grep,
4080 pager_select,
4081 };
4083 /*
4084 * Blame backend
4085 *
4086 * Loading the blame view is a two phase job:
4087 *
4088 * 1. File content is read either using opt_file from the
4089 * filesystem or using git-cat-file.
4090 * 2. Then blame information is incrementally added by
4091 * reading output from git-blame.
4092 */
4094 struct blame_commit {
4095 char id[SIZEOF_REV]; /* SHA1 ID. */
4096 char title[128]; /* First line of the commit message. */
4097 const char *author; /* Author of the commit. */
4098 struct time time; /* Date from the author ident. */
4099 char filename[128]; /* Name of file. */
4100 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4101 char parent_filename[128]; /* Parent/previous name of file. */
4102 };
4104 struct blame {
4105 struct blame_commit *commit;
4106 unsigned long lineno;
4107 char text[1];
4108 };
4110 static bool
4111 blame_open(struct view *view, enum open_flags flags)
4112 {
4113 char path[SIZEOF_STR];
4114 size_t i;
4116 if (!view->prev && *opt_prefix) {
4117 string_copy(path, opt_file);
4118 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4119 return FALSE;
4120 }
4122 if (*opt_ref || !io_open(&view->io, "%s%s", opt_cdup, opt_file)) {
4123 const char *blame_cat_file_argv[] = {
4124 "git", "cat-file", "blob", path, NULL
4125 };
4127 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4128 !start_update(view, blame_cat_file_argv, opt_cdup))
4129 return FALSE;
4130 }
4132 /* First pass: remove multiple references to the same commit. */
4133 for (i = 0; i < view->lines; i++) {
4134 struct blame *blame = view->line[i].data;
4136 if (blame->commit && blame->commit->id[0])
4137 blame->commit->id[0] = 0;
4138 else
4139 blame->commit = NULL;
4140 }
4142 /* Second pass: free existing references. */
4143 for (i = 0; i < view->lines; i++) {
4144 struct blame *blame = view->line[i].data;
4146 if (blame->commit)
4147 free(blame->commit);
4148 }
4150 setup_update(view, opt_file);
4151 string_format(view->ref, "%s ...", opt_file);
4153 return TRUE;
4154 }
4156 static struct blame_commit *
4157 get_blame_commit(struct view *view, const char *id)
4158 {
4159 size_t i;
4161 for (i = 0; i < view->lines; i++) {
4162 struct blame *blame = view->line[i].data;
4164 if (!blame->commit)
4165 continue;
4167 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4168 return blame->commit;
4169 }
4171 {
4172 struct blame_commit *commit = calloc(1, sizeof(*commit));
4174 if (commit)
4175 string_ncopy(commit->id, id, SIZEOF_REV);
4176 return commit;
4177 }
4178 }
4180 static bool
4181 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4182 {
4183 const char *pos = *posref;
4185 *posref = NULL;
4186 pos = strchr(pos + 1, ' ');
4187 if (!pos || !isdigit(pos[1]))
4188 return FALSE;
4189 *number = atoi(pos + 1);
4190 if (*number < min || *number > max)
4191 return FALSE;
4193 *posref = pos;
4194 return TRUE;
4195 }
4197 static struct blame_commit *
4198 parse_blame_commit(struct view *view, const char *text, int *blamed)
4199 {
4200 struct blame_commit *commit;
4201 struct blame *blame;
4202 const char *pos = text + SIZEOF_REV - 2;
4203 size_t orig_lineno = 0;
4204 size_t lineno;
4205 size_t group;
4207 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4208 return NULL;
4210 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4211 !parse_number(&pos, &lineno, 1, view->lines) ||
4212 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4213 return NULL;
4215 commit = get_blame_commit(view, text);
4216 if (!commit)
4217 return NULL;
4219 *blamed += group;
4220 while (group--) {
4221 struct line *line = &view->line[lineno + group - 1];
4223 blame = line->data;
4224 blame->commit = commit;
4225 blame->lineno = orig_lineno + group - 1;
4226 line->dirty = 1;
4227 }
4229 return commit;
4230 }
4232 static bool
4233 blame_read_file(struct view *view, const char *line, bool *read_file)
4234 {
4235 if (!line) {
4236 const char *blame_argv[] = {
4237 "git", "blame", "%(blameargs)", "--incremental",
4238 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4239 };
4241 if (view->lines == 0 && !view->prev)
4242 die("No blame exist for %s", view->vid);
4244 if (view->lines == 0 || !start_update(view, blame_argv, opt_cdup)) {
4245 report("Failed to load blame data");
4246 return TRUE;
4247 }
4249 *read_file = FALSE;
4250 return FALSE;
4252 } else {
4253 size_t linelen = strlen(line);
4254 struct blame *blame = malloc(sizeof(*blame) + linelen);
4256 if (!blame)
4257 return FALSE;
4259 blame->commit = NULL;
4260 strncpy(blame->text, line, linelen);
4261 blame->text[linelen] = 0;
4262 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4263 }
4264 }
4266 static bool
4267 match_blame_header(const char *name, char **line)
4268 {
4269 size_t namelen = strlen(name);
4270 bool matched = !strncmp(name, *line, namelen);
4272 if (matched)
4273 *line += namelen;
4275 return matched;
4276 }
4278 static bool
4279 blame_read(struct view *view, char *line)
4280 {
4281 static struct blame_commit *commit = NULL;
4282 static int blamed = 0;
4283 static bool read_file = TRUE;
4285 if (read_file)
4286 return blame_read_file(view, line, &read_file);
4288 if (!line) {
4289 /* Reset all! */
4290 commit = NULL;
4291 blamed = 0;
4292 read_file = TRUE;
4293 string_format(view->ref, "%s", view->vid);
4294 if (view_is_displayed(view)) {
4295 update_view_title(view);
4296 redraw_view_from(view, 0);
4297 }
4298 return TRUE;
4299 }
4301 if (!commit) {
4302 commit = parse_blame_commit(view, line, &blamed);
4303 string_format(view->ref, "%s %2d%%", view->vid,
4304 view->lines ? blamed * 100 / view->lines : 0);
4306 } else if (match_blame_header("author ", &line)) {
4307 commit->author = get_author(line);
4309 } else if (match_blame_header("author-time ", &line)) {
4310 parse_timesec(&commit->time, line);
4312 } else if (match_blame_header("author-tz ", &line)) {
4313 parse_timezone(&commit->time, line);
4315 } else if (match_blame_header("summary ", &line)) {
4316 string_ncopy(commit->title, line, strlen(line));
4318 } else if (match_blame_header("previous ", &line)) {
4319 if (strlen(line) <= SIZEOF_REV)
4320 return FALSE;
4321 string_copy_rev(commit->parent_id, line);
4322 line += SIZEOF_REV;
4323 string_ncopy(commit->parent_filename, line, strlen(line));
4325 } else if (match_blame_header("filename ", &line)) {
4326 string_ncopy(commit->filename, line, strlen(line));
4327 commit = NULL;
4328 }
4330 return TRUE;
4331 }
4333 static bool
4334 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4335 {
4336 struct blame *blame = line->data;
4337 struct time *time = NULL;
4338 const char *id = NULL, *author = NULL;
4340 if (blame->commit && *blame->commit->filename) {
4341 id = blame->commit->id;
4342 author = blame->commit->author;
4343 time = &blame->commit->time;
4344 }
4346 if (draw_date(view, time))
4347 return TRUE;
4349 if (draw_author(view, author))
4350 return TRUE;
4352 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4353 return TRUE;
4355 if (draw_lineno(view, lineno))
4356 return TRUE;
4358 draw_text(view, LINE_DEFAULT, blame->text);
4359 return TRUE;
4360 }
4362 static bool
4363 check_blame_commit(struct blame *blame, bool check_null_id)
4364 {
4365 if (!blame->commit)
4366 report("Commit data not loaded yet");
4367 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4368 report("No commit exist for the selected line");
4369 else
4370 return TRUE;
4371 return FALSE;
4372 }
4374 static void
4375 setup_blame_parent_line(struct view *view, struct blame *blame)
4376 {
4377 char from[SIZEOF_REF + SIZEOF_STR];
4378 char to[SIZEOF_REF + SIZEOF_STR];
4379 const char *diff_tree_argv[] = {
4380 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4381 "-U0", from, to, "--", NULL
4382 };
4383 struct io io;
4384 int parent_lineno = -1;
4385 int blamed_lineno = -1;
4386 char *line;
4388 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4389 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4390 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4391 return;
4393 while ((line = io_get(&io, '\n', TRUE))) {
4394 if (*line == '@') {
4395 char *pos = strchr(line, '+');
4397 parent_lineno = atoi(line + 4);
4398 if (pos)
4399 blamed_lineno = atoi(pos + 1);
4401 } else if (*line == '+' && parent_lineno != -1) {
4402 if (blame->lineno == blamed_lineno - 1 &&
4403 !strcmp(blame->text, line + 1)) {
4404 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4405 break;
4406 }
4407 blamed_lineno++;
4408 }
4409 }
4411 io_done(&io);
4412 }
4414 static enum request
4415 blame_request(struct view *view, enum request request, struct line *line)
4416 {
4417 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4418 struct blame *blame = line->data;
4420 switch (request) {
4421 case REQ_VIEW_BLAME:
4422 if (check_blame_commit(blame, TRUE)) {
4423 string_copy(opt_ref, blame->commit->id);
4424 string_copy(opt_file, blame->commit->filename);
4425 if (blame->lineno)
4426 view->lineno = blame->lineno;
4427 refresh_view(view);
4428 }
4429 break;
4431 case REQ_PARENT:
4432 if (!check_blame_commit(blame, TRUE))
4433 break;
4434 if (!*blame->commit->parent_id) {
4435 report("The selected commit has no parents");
4436 } else {
4437 string_copy_rev(opt_ref, blame->commit->parent_id);
4438 string_copy(opt_file, blame->commit->parent_filename);
4439 setup_blame_parent_line(view, blame);
4440 refresh_view(view);
4441 }
4442 break;
4444 case REQ_ENTER:
4445 if (!check_blame_commit(blame, FALSE))
4446 break;
4448 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4449 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4450 break;
4452 if (!strcmp(blame->commit->id, NULL_ID)) {
4453 struct view *diff = VIEW(REQ_VIEW_DIFF);
4454 const char *diff_index_argv[] = {
4455 "git", "diff-index", "--root", "--patch-with-stat",
4456 "-C", "-M", "HEAD", "--", view->vid, NULL
4457 };
4459 if (!*blame->commit->parent_id) {
4460 diff_index_argv[1] = "diff";
4461 diff_index_argv[2] = "--no-color";
4462 diff_index_argv[6] = "--";
4463 diff_index_argv[7] = "/dev/null";
4464 }
4466 open_argv(view, diff, diff_index_argv, NULL, flags);
4467 } else {
4468 open_view(view, REQ_VIEW_DIFF, flags);
4469 }
4470 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4471 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4472 break;
4474 default:
4475 return request;
4476 }
4478 return REQ_NONE;
4479 }
4481 static bool
4482 blame_grep(struct view *view, struct line *line)
4483 {
4484 struct blame *blame = line->data;
4485 struct blame_commit *commit = blame->commit;
4486 const char *text[] = {
4487 blame->text,
4488 commit ? commit->title : "",
4489 commit ? commit->id : "",
4490 commit && opt_author ? commit->author : "",
4491 commit ? mkdate(&commit->time, opt_date) : "",
4492 NULL
4493 };
4495 return grep_text(view, text);
4496 }
4498 static void
4499 blame_select(struct view *view, struct line *line)
4500 {
4501 struct blame *blame = line->data;
4502 struct blame_commit *commit = blame->commit;
4504 if (!commit)
4505 return;
4507 if (!strcmp(commit->id, NULL_ID))
4508 string_ncopy(ref_commit, "HEAD", 4);
4509 else
4510 string_copy_rev(ref_commit, commit->id);
4511 }
4513 static struct view_ops blame_ops = {
4514 "line",
4515 blame_open,
4516 blame_read,
4517 blame_draw,
4518 blame_request,
4519 blame_grep,
4520 blame_select,
4521 };
4523 /*
4524 * Branch backend
4525 */
4527 struct branch {
4528 const char *author; /* Author of the last commit. */
4529 struct time time; /* Date of the last activity. */
4530 const struct ref *ref; /* Name and commit ID information. */
4531 };
4533 static const struct ref branch_all;
4535 static const enum sort_field branch_sort_fields[] = {
4536 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4537 };
4538 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4540 static int
4541 branch_compare(const void *l1, const void *l2)
4542 {
4543 const struct branch *branch1 = ((const struct line *) l1)->data;
4544 const struct branch *branch2 = ((const struct line *) l2)->data;
4546 switch (get_sort_field(branch_sort_state)) {
4547 case ORDERBY_DATE:
4548 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4550 case ORDERBY_AUTHOR:
4551 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4553 case ORDERBY_NAME:
4554 default:
4555 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4556 }
4557 }
4559 static bool
4560 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4561 {
4562 struct branch *branch = line->data;
4563 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4565 if (draw_date(view, &branch->time))
4566 return TRUE;
4568 if (draw_author(view, branch->author))
4569 return TRUE;
4571 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4572 return TRUE;
4573 }
4575 static enum request
4576 branch_request(struct view *view, enum request request, struct line *line)
4577 {
4578 struct branch *branch = line->data;
4580 switch (request) {
4581 case REQ_REFRESH:
4582 load_refs();
4583 refresh_view(view);
4584 return REQ_NONE;
4586 case REQ_TOGGLE_SORT_FIELD:
4587 case REQ_TOGGLE_SORT_ORDER:
4588 sort_view(view, request, &branch_sort_state, branch_compare);
4589 return REQ_NONE;
4591 case REQ_ENTER:
4592 {
4593 const struct ref *ref = branch->ref;
4594 const char *all_branches_argv[] = {
4595 "git", "log", "--no-color", "--pretty=raw", "--parents",
4596 "--topo-order",
4597 ref == &branch_all ? "--all" : ref->name, NULL
4598 };
4599 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4601 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
4602 return REQ_NONE;
4603 }
4604 default:
4605 return request;
4606 }
4607 }
4609 static bool
4610 branch_read(struct view *view, char *line)
4611 {
4612 static char id[SIZEOF_REV];
4613 struct branch *reference;
4614 size_t i;
4616 if (!line)
4617 return TRUE;
4619 switch (get_line_type(line)) {
4620 case LINE_COMMIT:
4621 string_copy_rev(id, line + STRING_SIZE("commit "));
4622 return TRUE;
4624 case LINE_AUTHOR:
4625 for (i = 0, reference = NULL; i < view->lines; i++) {
4626 struct branch *branch = view->line[i].data;
4628 if (strcmp(branch->ref->id, id))
4629 continue;
4631 view->line[i].dirty = TRUE;
4632 if (reference) {
4633 branch->author = reference->author;
4634 branch->time = reference->time;
4635 continue;
4636 }
4638 parse_author_line(line + STRING_SIZE("author "),
4639 &branch->author, &branch->time);
4640 reference = branch;
4641 }
4642 return TRUE;
4644 default:
4645 return TRUE;
4646 }
4648 }
4650 static bool
4651 branch_open_visitor(void *data, const struct ref *ref)
4652 {
4653 struct view *view = data;
4654 struct branch *branch;
4656 if (ref->tag || ref->ltag || ref->remote)
4657 return TRUE;
4659 branch = calloc(1, sizeof(*branch));
4660 if (!branch)
4661 return FALSE;
4663 branch->ref = ref;
4664 return !!add_line_data(view, branch, LINE_DEFAULT);
4665 }
4667 static bool
4668 branch_open(struct view *view, enum open_flags flags)
4669 {
4670 const char *branch_log[] = {
4671 "git", "log", "--no-color", "--pretty=raw",
4672 "--simplify-by-decoration", "--all", NULL
4673 };
4675 if (!start_update(view, branch_log, NULL)) {
4676 report("Failed to load branch data");
4677 return TRUE;
4678 }
4680 setup_update(view, view->id);
4681 branch_open_visitor(view, &branch_all);
4682 foreach_ref(branch_open_visitor, view);
4683 view->p_restore = TRUE;
4685 return TRUE;
4686 }
4688 static bool
4689 branch_grep(struct view *view, struct line *line)
4690 {
4691 struct branch *branch = line->data;
4692 const char *text[] = {
4693 branch->ref->name,
4694 branch->author,
4695 NULL
4696 };
4698 return grep_text(view, text);
4699 }
4701 static void
4702 branch_select(struct view *view, struct line *line)
4703 {
4704 struct branch *branch = line->data;
4706 string_copy_rev(view->ref, branch->ref->id);
4707 string_copy_rev(ref_commit, branch->ref->id);
4708 string_copy_rev(ref_head, branch->ref->id);
4709 string_copy_rev(ref_branch, branch->ref->name);
4710 }
4712 static struct view_ops branch_ops = {
4713 "branch",
4714 branch_open,
4715 branch_read,
4716 branch_draw,
4717 branch_request,
4718 branch_grep,
4719 branch_select,
4720 };
4722 /*
4723 * Status backend
4724 */
4726 struct status {
4727 char status;
4728 struct {
4729 mode_t mode;
4730 char rev[SIZEOF_REV];
4731 char name[SIZEOF_STR];
4732 } old;
4733 struct {
4734 mode_t mode;
4735 char rev[SIZEOF_REV];
4736 char name[SIZEOF_STR];
4737 } new;
4738 };
4740 static char status_onbranch[SIZEOF_STR];
4741 static struct status stage_status;
4742 static enum line_type stage_line_type;
4743 static size_t stage_chunks;
4744 static int *stage_chunk;
4746 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4748 /* This should work even for the "On branch" line. */
4749 static inline bool
4750 status_has_none(struct view *view, struct line *line)
4751 {
4752 return line < view->line + view->lines && !line[1].data;
4753 }
4755 /* Get fields from the diff line:
4756 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4757 */
4758 static inline bool
4759 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4760 {
4761 const char *old_mode = buf + 1;
4762 const char *new_mode = buf + 8;
4763 const char *old_rev = buf + 15;
4764 const char *new_rev = buf + 56;
4765 const char *status = buf + 97;
4767 if (bufsize < 98 ||
4768 old_mode[-1] != ':' ||
4769 new_mode[-1] != ' ' ||
4770 old_rev[-1] != ' ' ||
4771 new_rev[-1] != ' ' ||
4772 status[-1] != ' ')
4773 return FALSE;
4775 file->status = *status;
4777 string_copy_rev(file->old.rev, old_rev);
4778 string_copy_rev(file->new.rev, new_rev);
4780 file->old.mode = strtoul(old_mode, NULL, 8);
4781 file->new.mode = strtoul(new_mode, NULL, 8);
4783 file->old.name[0] = file->new.name[0] = 0;
4785 return TRUE;
4786 }
4788 static bool
4789 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4790 {
4791 struct status *unmerged = NULL;
4792 char *buf;
4793 struct io io;
4795 if (!io_run(&io, IO_RD, opt_cdup, argv))
4796 return FALSE;
4798 add_line_data(view, NULL, type);
4800 while ((buf = io_get(&io, 0, TRUE))) {
4801 struct status *file = unmerged;
4803 if (!file) {
4804 file = calloc(1, sizeof(*file));
4805 if (!file || !add_line_data(view, file, type))
4806 goto error_out;
4807 }
4809 /* Parse diff info part. */
4810 if (status) {
4811 file->status = status;
4812 if (status == 'A')
4813 string_copy(file->old.rev, NULL_ID);
4815 } else if (!file->status || file == unmerged) {
4816 if (!status_get_diff(file, buf, strlen(buf)))
4817 goto error_out;
4819 buf = io_get(&io, 0, TRUE);
4820 if (!buf)
4821 break;
4823 /* Collapse all modified entries that follow an
4824 * associated unmerged entry. */
4825 if (unmerged == file) {
4826 unmerged->status = 'U';
4827 unmerged = NULL;
4828 } else if (file->status == 'U') {
4829 unmerged = file;
4830 }
4831 }
4833 /* Grab the old name for rename/copy. */
4834 if (!*file->old.name &&
4835 (file->status == 'R' || file->status == 'C')) {
4836 string_ncopy(file->old.name, buf, strlen(buf));
4838 buf = io_get(&io, 0, TRUE);
4839 if (!buf)
4840 break;
4841 }
4843 /* git-ls-files just delivers a NUL separated list of
4844 * file names similar to the second half of the
4845 * git-diff-* output. */
4846 string_ncopy(file->new.name, buf, strlen(buf));
4847 if (!*file->old.name)
4848 string_copy(file->old.name, file->new.name);
4849 file = NULL;
4850 }
4852 if (io_error(&io)) {
4853 error_out:
4854 io_done(&io);
4855 return FALSE;
4856 }
4858 if (!view->line[view->lines - 1].data)
4859 add_line_data(view, NULL, LINE_STAT_NONE);
4861 io_done(&io);
4862 return TRUE;
4863 }
4865 /* Don't show unmerged entries in the staged section. */
4866 static const char *status_diff_index_argv[] = {
4867 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4868 "--cached", "-M", "HEAD", NULL
4869 };
4871 static const char *status_diff_files_argv[] = {
4872 "git", "diff-files", "-z", NULL
4873 };
4875 static const char *status_list_other_argv[] = {
4876 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4877 };
4879 static const char *status_list_no_head_argv[] = {
4880 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4881 };
4883 static const char *update_index_argv[] = {
4884 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4885 };
4887 /* Restore the previous line number to stay in the context or select a
4888 * line with something that can be updated. */
4889 static void
4890 status_restore(struct view *view)
4891 {
4892 if (view->p_lineno >= view->lines)
4893 view->p_lineno = view->lines - 1;
4894 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4895 view->p_lineno++;
4896 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4897 view->p_lineno--;
4899 /* If the above fails, always skip the "On branch" line. */
4900 if (view->p_lineno < view->lines)
4901 view->lineno = view->p_lineno;
4902 else
4903 view->lineno = 1;
4905 if (view->lineno < view->offset)
4906 view->offset = view->lineno;
4907 else if (view->offset + view->height <= view->lineno)
4908 view->offset = view->lineno - view->height + 1;
4910 view->p_restore = FALSE;
4911 }
4913 static void
4914 status_update_onbranch(void)
4915 {
4916 static const char *paths[][2] = {
4917 { "rebase-apply/rebasing", "Rebasing" },
4918 { "rebase-apply/applying", "Applying mailbox" },
4919 { "rebase-apply/", "Rebasing mailbox" },
4920 { "rebase-merge/interactive", "Interactive rebase" },
4921 { "rebase-merge/", "Rebase merge" },
4922 { "MERGE_HEAD", "Merging" },
4923 { "BISECT_LOG", "Bisecting" },
4924 { "HEAD", "On branch" },
4925 };
4926 char buf[SIZEOF_STR];
4927 struct stat stat;
4928 int i;
4930 if (is_initial_commit()) {
4931 string_copy(status_onbranch, "Initial commit");
4932 return;
4933 }
4935 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4936 char *head = opt_head;
4938 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4939 lstat(buf, &stat) < 0)
4940 continue;
4942 if (!*opt_head) {
4943 struct io io;
4945 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4946 io_read_buf(&io, buf, sizeof(buf))) {
4947 head = buf;
4948 if (!prefixcmp(head, "refs/heads/"))
4949 head += STRING_SIZE("refs/heads/");
4950 }
4951 }
4953 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4954 string_copy(status_onbranch, opt_head);
4955 return;
4956 }
4958 string_copy(status_onbranch, "Not currently on any branch");
4959 }
4961 /* First parse staged info using git-diff-index(1), then parse unstaged
4962 * info using git-diff-files(1), and finally untracked files using
4963 * git-ls-files(1). */
4964 static bool
4965 status_open(struct view *view, enum open_flags flags)
4966 {
4967 reset_view(view);
4969 add_line_data(view, NULL, LINE_STAT_HEAD);
4970 status_update_onbranch();
4972 io_run_bg(update_index_argv);
4974 if (is_initial_commit()) {
4975 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4976 return FALSE;
4977 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4978 return FALSE;
4979 }
4981 if (!opt_untracked_dirs_content)
4982 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
4984 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4985 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4986 return FALSE;
4988 /* Restore the exact position or use the specialized restore
4989 * mode? */
4990 if (!view->p_restore)
4991 status_restore(view);
4992 return TRUE;
4993 }
4995 static bool
4996 status_draw(struct view *view, struct line *line, unsigned int lineno)
4997 {
4998 struct status *status = line->data;
4999 enum line_type type;
5000 const char *text;
5002 if (!status) {
5003 switch (line->type) {
5004 case LINE_STAT_STAGED:
5005 type = LINE_STAT_SECTION;
5006 text = "Changes to be committed:";
5007 break;
5009 case LINE_STAT_UNSTAGED:
5010 type = LINE_STAT_SECTION;
5011 text = "Changed but not updated:";
5012 break;
5014 case LINE_STAT_UNTRACKED:
5015 type = LINE_STAT_SECTION;
5016 text = "Untracked files:";
5017 break;
5019 case LINE_STAT_NONE:
5020 type = LINE_DEFAULT;
5021 text = " (no files)";
5022 break;
5024 case LINE_STAT_HEAD:
5025 type = LINE_STAT_HEAD;
5026 text = status_onbranch;
5027 break;
5029 default:
5030 return FALSE;
5031 }
5032 } else {
5033 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5035 buf[0] = status->status;
5036 if (draw_text(view, line->type, buf))
5037 return TRUE;
5038 type = LINE_DEFAULT;
5039 text = status->new.name;
5040 }
5042 draw_text(view, type, text);
5043 return TRUE;
5044 }
5046 static enum request
5047 status_enter(struct view *view, struct line *line)
5048 {
5049 struct status *status = line->data;
5050 const char *oldpath = status ? status->old.name : NULL;
5051 /* Diffs for unmerged entries are empty when passing the new
5052 * path, so leave it empty. */
5053 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5054 const char *info;
5055 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5056 struct view *stage = VIEW(REQ_VIEW_STAGE);
5058 if (line->type == LINE_STAT_NONE ||
5059 (!status && line[1].type == LINE_STAT_NONE)) {
5060 report("No file to diff");
5061 return REQ_NONE;
5062 }
5064 switch (line->type) {
5065 case LINE_STAT_STAGED:
5066 if (is_initial_commit()) {
5067 const char *no_head_diff_argv[] = {
5068 "git", "diff", "--no-color", "--patch-with-stat",
5069 "--", "/dev/null", newpath, NULL
5070 };
5072 open_argv(view, stage, no_head_diff_argv, opt_cdup, flags);
5073 } else {
5074 const char *index_show_argv[] = {
5075 "git", "diff-index", "--root", "--patch-with-stat",
5076 "-C", "-M", "--cached", "HEAD", "--",
5077 oldpath, newpath, NULL
5078 };
5080 open_argv(view, stage, index_show_argv, opt_cdup, flags);
5081 }
5083 if (status)
5084 info = "Staged changes to %s";
5085 else
5086 info = "Staged changes";
5087 break;
5089 case LINE_STAT_UNSTAGED:
5090 {
5091 const char *files_show_argv[] = {
5092 "git", "diff-files", "--root", "--patch-with-stat",
5093 "-C", "-M", "--", oldpath, newpath, NULL
5094 };
5096 open_argv(view, stage, files_show_argv, opt_cdup, flags);
5097 if (status)
5098 info = "Unstaged changes to %s";
5099 else
5100 info = "Unstaged changes";
5101 break;
5102 }
5103 case LINE_STAT_UNTRACKED:
5104 if (!newpath) {
5105 report("No file to show");
5106 return REQ_NONE;
5107 }
5109 if (!suffixcmp(status->new.name, -1, "/")) {
5110 report("Cannot display a directory");
5111 return REQ_NONE;
5112 }
5114 open_file(view, stage, newpath, flags);
5115 info = "Untracked file %s";
5116 break;
5118 case LINE_STAT_HEAD:
5119 return REQ_NONE;
5121 default:
5122 die("line type %d not handled in switch", line->type);
5123 }
5125 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5126 if (status) {
5127 stage_status = *status;
5128 } else {
5129 memset(&stage_status, 0, sizeof(stage_status));
5130 }
5132 stage_line_type = line->type;
5133 stage_chunks = 0;
5134 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5135 }
5137 return REQ_NONE;
5138 }
5140 static bool
5141 status_exists(struct status *status, enum line_type type)
5142 {
5143 struct view *view = VIEW(REQ_VIEW_STATUS);
5144 unsigned long lineno;
5146 for (lineno = 0; lineno < view->lines; lineno++) {
5147 struct line *line = &view->line[lineno];
5148 struct status *pos = line->data;
5150 if (line->type != type)
5151 continue;
5152 if (!pos && (!status || !status->status) && line[1].data) {
5153 select_view_line(view, lineno);
5154 return TRUE;
5155 }
5156 if (pos && !strcmp(status->new.name, pos->new.name)) {
5157 select_view_line(view, lineno);
5158 return TRUE;
5159 }
5160 }
5162 return FALSE;
5163 }
5166 static bool
5167 status_update_prepare(struct io *io, enum line_type type)
5168 {
5169 const char *staged_argv[] = {
5170 "git", "update-index", "-z", "--index-info", NULL
5171 };
5172 const char *others_argv[] = {
5173 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5174 };
5176 switch (type) {
5177 case LINE_STAT_STAGED:
5178 return io_run(io, IO_WR, opt_cdup, staged_argv);
5180 case LINE_STAT_UNSTAGED:
5181 case LINE_STAT_UNTRACKED:
5182 return io_run(io, IO_WR, opt_cdup, others_argv);
5184 default:
5185 die("line type %d not handled in switch", type);
5186 return FALSE;
5187 }
5188 }
5190 static bool
5191 status_update_write(struct io *io, struct status *status, enum line_type type)
5192 {
5193 char buf[SIZEOF_STR];
5194 size_t bufsize = 0;
5196 switch (type) {
5197 case LINE_STAT_STAGED:
5198 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5199 status->old.mode,
5200 status->old.rev,
5201 status->old.name, 0))
5202 return FALSE;
5203 break;
5205 case LINE_STAT_UNSTAGED:
5206 case LINE_STAT_UNTRACKED:
5207 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5208 return FALSE;
5209 break;
5211 default:
5212 die("line type %d not handled in switch", type);
5213 }
5215 return io_write(io, buf, bufsize);
5216 }
5218 static bool
5219 status_update_file(struct status *status, enum line_type type)
5220 {
5221 struct io io;
5222 bool result;
5224 if (!status_update_prepare(&io, type))
5225 return FALSE;
5227 result = status_update_write(&io, status, type);
5228 return io_done(&io) && result;
5229 }
5231 static bool
5232 status_update_files(struct view *view, struct line *line)
5233 {
5234 char buf[sizeof(view->ref)];
5235 struct io io;
5236 bool result = TRUE;
5237 struct line *pos = view->line + view->lines;
5238 int files = 0;
5239 int file, done;
5240 int cursor_y = -1, cursor_x = -1;
5242 if (!status_update_prepare(&io, line->type))
5243 return FALSE;
5245 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5246 files++;
5248 string_copy(buf, view->ref);
5249 getsyx(cursor_y, cursor_x);
5250 for (file = 0, done = 5; result && file < files; line++, file++) {
5251 int almost_done = file * 100 / files;
5253 if (almost_done > done) {
5254 done = almost_done;
5255 string_format(view->ref, "updating file %u of %u (%d%% done)",
5256 file, files, done);
5257 update_view_title(view);
5258 setsyx(cursor_y, cursor_x);
5259 doupdate();
5260 }
5261 result = status_update_write(&io, line->data, line->type);
5262 }
5263 string_copy(view->ref, buf);
5265 return io_done(&io) && result;
5266 }
5268 static bool
5269 status_update(struct view *view)
5270 {
5271 struct line *line = &view->line[view->lineno];
5273 assert(view->lines);
5275 if (!line->data) {
5276 /* This should work even for the "On branch" line. */
5277 if (line < view->line + view->lines && !line[1].data) {
5278 report("Nothing to update");
5279 return FALSE;
5280 }
5282 if (!status_update_files(view, line + 1)) {
5283 report("Failed to update file status");
5284 return FALSE;
5285 }
5287 } else if (!status_update_file(line->data, line->type)) {
5288 report("Failed to update file status");
5289 return FALSE;
5290 }
5292 return TRUE;
5293 }
5295 static bool
5296 status_revert(struct status *status, enum line_type type, bool has_none)
5297 {
5298 if (!status || type != LINE_STAT_UNSTAGED) {
5299 if (type == LINE_STAT_STAGED) {
5300 report("Cannot revert changes to staged files");
5301 } else if (type == LINE_STAT_UNTRACKED) {
5302 report("Cannot revert changes to untracked files");
5303 } else if (has_none) {
5304 report("Nothing to revert");
5305 } else {
5306 report("Cannot revert changes to multiple files");
5307 }
5309 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5310 char mode[10] = "100644";
5311 const char *reset_argv[] = {
5312 "git", "update-index", "--cacheinfo", mode,
5313 status->old.rev, status->old.name, NULL
5314 };
5315 const char *checkout_argv[] = {
5316 "git", "checkout", "--", status->old.name, NULL
5317 };
5319 if (status->status == 'U') {
5320 string_format(mode, "%5o", status->old.mode);
5322 if (status->old.mode == 0 && status->new.mode == 0) {
5323 reset_argv[2] = "--force-remove";
5324 reset_argv[3] = status->old.name;
5325 reset_argv[4] = NULL;
5326 }
5328 if (!io_run_fg(reset_argv, opt_cdup))
5329 return FALSE;
5330 if (status->old.mode == 0 && status->new.mode == 0)
5331 return TRUE;
5332 }
5334 return io_run_fg(checkout_argv, opt_cdup);
5335 }
5337 return FALSE;
5338 }
5340 static enum request
5341 status_request(struct view *view, enum request request, struct line *line)
5342 {
5343 struct status *status = line->data;
5345 switch (request) {
5346 case REQ_STATUS_UPDATE:
5347 if (!status_update(view))
5348 return REQ_NONE;
5349 break;
5351 case REQ_STATUS_REVERT:
5352 if (!status_revert(status, line->type, status_has_none(view, line)))
5353 return REQ_NONE;
5354 break;
5356 case REQ_STATUS_MERGE:
5357 if (!status || status->status != 'U') {
5358 report("Merging only possible for files with unmerged status ('U').");
5359 return REQ_NONE;
5360 }
5361 open_mergetool(status->new.name);
5362 break;
5364 case REQ_EDIT:
5365 if (!status)
5366 return request;
5367 if (status->status == 'D') {
5368 report("File has been deleted.");
5369 return REQ_NONE;
5370 }
5372 open_editor(status->new.name);
5373 break;
5375 case REQ_VIEW_BLAME:
5376 if (status)
5377 opt_ref[0] = 0;
5378 return request;
5380 case REQ_ENTER:
5381 /* After returning the status view has been split to
5382 * show the stage view. No further reloading is
5383 * necessary. */
5384 return status_enter(view, line);
5386 case REQ_REFRESH:
5387 /* Simply reload the view. */
5388 break;
5390 default:
5391 return request;
5392 }
5394 refresh_view(view);
5396 return REQ_NONE;
5397 }
5399 static void
5400 status_select(struct view *view, struct line *line)
5401 {
5402 struct status *status = line->data;
5403 char file[SIZEOF_STR] = "all files";
5404 const char *text;
5405 const char *key;
5407 if (status && !string_format(file, "'%s'", status->new.name))
5408 return;
5410 if (!status && line[1].type == LINE_STAT_NONE)
5411 line++;
5413 switch (line->type) {
5414 case LINE_STAT_STAGED:
5415 text = "Press %s to unstage %s for commit";
5416 break;
5418 case LINE_STAT_UNSTAGED:
5419 text = "Press %s to stage %s for commit";
5420 break;
5422 case LINE_STAT_UNTRACKED:
5423 text = "Press %s to stage %s for addition";
5424 break;
5426 case LINE_STAT_HEAD:
5427 case LINE_STAT_NONE:
5428 text = "Nothing to update";
5429 break;
5431 default:
5432 die("line type %d not handled in switch", line->type);
5433 }
5435 if (status && status->status == 'U') {
5436 text = "Press %s to resolve conflict in %s";
5437 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5439 } else {
5440 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5441 }
5443 string_format(view->ref, text, key, file);
5444 if (status)
5445 string_copy(opt_file, status->new.name);
5446 }
5448 static bool
5449 status_grep(struct view *view, struct line *line)
5450 {
5451 struct status *status = line->data;
5453 if (status) {
5454 const char buf[2] = { status->status, 0 };
5455 const char *text[] = { status->new.name, buf, NULL };
5457 return grep_text(view, text);
5458 }
5460 return FALSE;
5461 }
5463 static struct view_ops status_ops = {
5464 "file",
5465 status_open,
5466 NULL,
5467 status_draw,
5468 status_request,
5469 status_grep,
5470 status_select,
5471 };
5474 static bool
5475 stage_diff_write(struct io *io, struct line *line, struct line *end)
5476 {
5477 while (line < end) {
5478 if (!io_write(io, line->data, strlen(line->data)) ||
5479 !io_write(io, "\n", 1))
5480 return FALSE;
5481 line++;
5482 if (line->type == LINE_DIFF_CHUNK ||
5483 line->type == LINE_DIFF_HEADER)
5484 break;
5485 }
5487 return TRUE;
5488 }
5490 static struct line *
5491 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5492 {
5493 for (; view->line < line; line--)
5494 if (line->type == type)
5495 return line;
5497 return NULL;
5498 }
5500 static bool
5501 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5502 {
5503 const char *apply_argv[SIZEOF_ARG] = {
5504 "git", "apply", "--whitespace=nowarn", NULL
5505 };
5506 struct line *diff_hdr;
5507 struct io io;
5508 int argc = 3;
5510 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5511 if (!diff_hdr)
5512 return FALSE;
5514 if (!revert)
5515 apply_argv[argc++] = "--cached";
5516 if (revert || stage_line_type == LINE_STAT_STAGED)
5517 apply_argv[argc++] = "-R";
5518 apply_argv[argc++] = "-";
5519 apply_argv[argc++] = NULL;
5520 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5521 return FALSE;
5523 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5524 !stage_diff_write(&io, chunk, view->line + view->lines))
5525 chunk = NULL;
5527 io_done(&io);
5528 io_run_bg(update_index_argv);
5530 return chunk ? TRUE : FALSE;
5531 }
5533 static bool
5534 stage_update(struct view *view, struct line *line)
5535 {
5536 struct line *chunk = NULL;
5538 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5539 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5541 if (chunk) {
5542 if (!stage_apply_chunk(view, chunk, FALSE)) {
5543 report("Failed to apply chunk");
5544 return FALSE;
5545 }
5547 } else if (!stage_status.status) {
5548 view = VIEW(REQ_VIEW_STATUS);
5550 for (line = view->line; line < view->line + view->lines; line++)
5551 if (line->type == stage_line_type)
5552 break;
5554 if (!status_update_files(view, line + 1)) {
5555 report("Failed to update files");
5556 return FALSE;
5557 }
5559 } else if (!status_update_file(&stage_status, stage_line_type)) {
5560 report("Failed to update file");
5561 return FALSE;
5562 }
5564 return TRUE;
5565 }
5567 static bool
5568 stage_revert(struct view *view, struct line *line)
5569 {
5570 struct line *chunk = NULL;
5572 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5573 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5575 if (chunk) {
5576 if (!prompt_yesno("Are you sure you want to revert changes?"))
5577 return FALSE;
5579 if (!stage_apply_chunk(view, chunk, TRUE)) {
5580 report("Failed to revert chunk");
5581 return FALSE;
5582 }
5583 return TRUE;
5585 } else {
5586 return status_revert(stage_status.status ? &stage_status : NULL,
5587 stage_line_type, FALSE);
5588 }
5589 }
5592 static void
5593 stage_next(struct view *view, struct line *line)
5594 {
5595 int i;
5597 if (!stage_chunks) {
5598 for (line = view->line; line < view->line + view->lines; line++) {
5599 if (line->type != LINE_DIFF_CHUNK)
5600 continue;
5602 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5603 report("Allocation failure");
5604 return;
5605 }
5607 stage_chunk[stage_chunks++] = line - view->line;
5608 }
5609 }
5611 for (i = 0; i < stage_chunks; i++) {
5612 if (stage_chunk[i] > view->lineno) {
5613 do_scroll_view(view, stage_chunk[i] - view->lineno);
5614 report("Chunk %d of %d", i + 1, stage_chunks);
5615 return;
5616 }
5617 }
5619 report("No next chunk found");
5620 }
5622 static enum request
5623 stage_request(struct view *view, enum request request, struct line *line)
5624 {
5625 switch (request) {
5626 case REQ_STATUS_UPDATE:
5627 if (!stage_update(view, line))
5628 return REQ_NONE;
5629 break;
5631 case REQ_STATUS_REVERT:
5632 if (!stage_revert(view, line))
5633 return REQ_NONE;
5634 break;
5636 case REQ_STAGE_NEXT:
5637 if (stage_line_type == LINE_STAT_UNTRACKED) {
5638 report("File is untracked; press %s to add",
5639 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5640 return REQ_NONE;
5641 }
5642 stage_next(view, line);
5643 return REQ_NONE;
5645 case REQ_EDIT:
5646 if (!stage_status.new.name[0])
5647 return request;
5648 if (stage_status.status == 'D') {
5649 report("File has been deleted.");
5650 return REQ_NONE;
5651 }
5653 open_editor(stage_status.new.name);
5654 break;
5656 case REQ_REFRESH:
5657 /* Reload everything ... */
5658 break;
5660 case REQ_VIEW_BLAME:
5661 if (stage_status.new.name[0]) {
5662 string_copy(opt_file, stage_status.new.name);
5663 opt_ref[0] = 0;
5664 }
5665 return request;
5667 case REQ_ENTER:
5668 return pager_request(view, request, line);
5670 default:
5671 return request;
5672 }
5674 refresh_view(view->parent);
5676 /* Check whether the staged entry still exists, and close the
5677 * stage view if it doesn't. */
5678 if (!status_exists(&stage_status, stage_line_type)) {
5679 status_restore(VIEW(REQ_VIEW_STATUS));
5680 return REQ_VIEW_CLOSE;
5681 }
5683 refresh_view(view);
5685 return REQ_NONE;
5686 }
5688 static struct view_ops stage_ops = {
5689 "line",
5690 view_open,
5691 pager_read,
5692 pager_draw,
5693 stage_request,
5694 pager_grep,
5695 pager_select,
5696 };
5699 /*
5700 * Revision graph
5701 */
5703 static const enum line_type graph_colors[] = {
5704 LINE_GRAPH_LINE_0,
5705 LINE_GRAPH_LINE_1,
5706 LINE_GRAPH_LINE_2,
5707 LINE_GRAPH_LINE_3,
5708 LINE_GRAPH_LINE_4,
5709 LINE_GRAPH_LINE_5,
5710 LINE_GRAPH_LINE_6,
5711 };
5713 static enum line_type get_graph_color(struct graph_symbol *symbol)
5714 {
5715 if (symbol->commit)
5716 return LINE_GRAPH_COMMIT;
5717 assert(symbol->color < ARRAY_SIZE(graph_colors));
5718 return graph_colors[symbol->color];
5719 }
5721 static bool
5722 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5723 {
5724 const char *chars = graph_symbol_to_utf8(symbol);
5726 return draw_text(view, color, chars + !!first);
5727 }
5729 static bool
5730 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5731 {
5732 const char *chars = graph_symbol_to_ascii(symbol);
5734 return draw_text(view, color, chars + !!first);
5735 }
5737 static bool
5738 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5739 {
5740 const chtype *chars = graph_symbol_to_chtype(symbol);
5742 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5743 }
5745 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5747 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5748 {
5749 static const draw_graph_fn fns[] = {
5750 draw_graph_ascii,
5751 draw_graph_chtype,
5752 draw_graph_utf8
5753 };
5754 draw_graph_fn fn = fns[opt_line_graphics];
5755 int i;
5757 for (i = 0; i < canvas->size; i++) {
5758 struct graph_symbol *symbol = &canvas->symbols[i];
5759 enum line_type color = get_graph_color(symbol);
5761 if (fn(view, symbol, color, i == 0))
5762 return TRUE;
5763 }
5765 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5766 }
5768 /*
5769 * Main view backend
5770 */
5772 struct commit {
5773 char id[SIZEOF_REV]; /* SHA1 ID. */
5774 char title[128]; /* First line of the commit message. */
5775 const char *author; /* Author of the commit. */
5776 struct time time; /* Date from the author ident. */
5777 struct ref_list *refs; /* Repository references. */
5778 struct graph_canvas graph; /* Ancestry chain graphics. */
5779 };
5781 static bool
5782 main_open(struct view *view, enum open_flags flags)
5783 {
5784 static const char *main_argv[] = {
5785 "git", "log", "--no-color", "--pretty=raw", "--parents",
5786 "--topo-order", "%(diffargs)", "%(revargs)",
5787 "--", "%(fileargs)", NULL
5788 };
5790 return begin_update(view, NULL, main_argv, flags);
5791 }
5793 static bool
5794 main_draw(struct view *view, struct line *line, unsigned int lineno)
5795 {
5796 struct commit *commit = line->data;
5798 if (!commit->author)
5799 return FALSE;
5801 if (draw_date(view, &commit->time))
5802 return TRUE;
5804 if (draw_author(view, commit->author))
5805 return TRUE;
5807 if (opt_rev_graph && draw_graph(view, &commit->graph))
5808 return TRUE;
5810 if (opt_show_refs && commit->refs) {
5811 size_t i;
5813 for (i = 0; i < commit->refs->size; i++) {
5814 struct ref *ref = commit->refs->refs[i];
5815 enum line_type type;
5817 if (ref->head)
5818 type = LINE_MAIN_HEAD;
5819 else if (ref->ltag)
5820 type = LINE_MAIN_LOCAL_TAG;
5821 else if (ref->tag)
5822 type = LINE_MAIN_TAG;
5823 else if (ref->tracked)
5824 type = LINE_MAIN_TRACKED;
5825 else if (ref->remote)
5826 type = LINE_MAIN_REMOTE;
5827 else
5828 type = LINE_MAIN_REF;
5830 if (draw_text(view, type, "[") ||
5831 draw_text(view, type, ref->name) ||
5832 draw_text(view, type, "]"))
5833 return TRUE;
5835 if (draw_text(view, LINE_DEFAULT, " "))
5836 return TRUE;
5837 }
5838 }
5840 draw_text(view, LINE_DEFAULT, commit->title);
5841 return TRUE;
5842 }
5844 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5845 static bool
5846 main_read(struct view *view, char *line)
5847 {
5848 static struct graph graph;
5849 enum line_type type;
5850 struct commit *commit;
5852 if (!line) {
5853 if (!view->lines && !view->prev)
5854 die("No revisions match the given arguments.");
5855 if (view->lines > 0) {
5856 commit = view->line[view->lines - 1].data;
5857 view->line[view->lines - 1].dirty = 1;
5858 if (!commit->author) {
5859 view->lines--;
5860 free(commit);
5861 }
5862 }
5864 done_graph(&graph);
5865 return TRUE;
5866 }
5868 type = get_line_type(line);
5869 if (type == LINE_COMMIT) {
5870 bool is_boundary;
5872 commit = calloc(1, sizeof(struct commit));
5873 if (!commit)
5874 return FALSE;
5876 line += STRING_SIZE("commit ");
5877 is_boundary = *line == '-';
5878 if (is_boundary)
5879 line++;
5881 string_copy_rev(commit->id, line);
5882 commit->refs = get_ref_list(commit->id);
5883 add_line_data(view, commit, LINE_MAIN_COMMIT);
5884 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5885 return TRUE;
5886 }
5888 if (!view->lines)
5889 return TRUE;
5890 commit = view->line[view->lines - 1].data;
5892 switch (type) {
5893 case LINE_PARENT:
5894 if (!graph.has_parents)
5895 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5896 break;
5898 case LINE_AUTHOR:
5899 parse_author_line(line + STRING_SIZE("author "),
5900 &commit->author, &commit->time);
5901 graph_render_parents(&graph);
5902 break;
5904 default:
5905 /* Fill in the commit title if it has not already been set. */
5906 if (commit->title[0])
5907 break;
5909 /* Require titles to start with a non-space character at the
5910 * offset used by git log. */
5911 if (strncmp(line, " ", 4))
5912 break;
5913 line += 4;
5914 /* Well, if the title starts with a whitespace character,
5915 * try to be forgiving. Otherwise we end up with no title. */
5916 while (isspace(*line))
5917 line++;
5918 if (*line == '\0')
5919 break;
5920 /* FIXME: More graceful handling of titles; append "..." to
5921 * shortened titles, etc. */
5923 string_expand(commit->title, sizeof(commit->title), line, 1);
5924 view->line[view->lines - 1].dirty = 1;
5925 }
5927 return TRUE;
5928 }
5930 static enum request
5931 main_request(struct view *view, enum request request, struct line *line)
5932 {
5933 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5935 switch (request) {
5936 case REQ_ENTER:
5937 if (view_is_displayed(view) && display[0] != view)
5938 maximize_view(view);
5939 open_view(view, REQ_VIEW_DIFF, flags);
5940 break;
5941 case REQ_REFRESH:
5942 load_refs();
5943 refresh_view(view);
5944 break;
5945 default:
5946 return request;
5947 }
5949 return REQ_NONE;
5950 }
5952 static bool
5953 grep_refs(struct ref_list *list, regex_t *regex)
5954 {
5955 regmatch_t pmatch;
5956 size_t i;
5958 if (!opt_show_refs || !list)
5959 return FALSE;
5961 for (i = 0; i < list->size; i++) {
5962 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5963 return TRUE;
5964 }
5966 return FALSE;
5967 }
5969 static bool
5970 main_grep(struct view *view, struct line *line)
5971 {
5972 struct commit *commit = line->data;
5973 const char *text[] = {
5974 commit->title,
5975 opt_author ? commit->author : "",
5976 mkdate(&commit->time, opt_date),
5977 NULL
5978 };
5980 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5981 }
5983 static void
5984 main_select(struct view *view, struct line *line)
5985 {
5986 struct commit *commit = line->data;
5988 string_copy_rev(view->ref, commit->id);
5989 string_copy_rev(ref_commit, view->ref);
5990 }
5992 static struct view_ops main_ops = {
5993 "commit",
5994 main_open,
5995 main_read,
5996 main_draw,
5997 main_request,
5998 main_grep,
5999 main_select,
6000 };
6003 /*
6004 * Status management
6005 */
6007 /* Whether or not the curses interface has been initialized. */
6008 static bool cursed = FALSE;
6010 /* Terminal hacks and workarounds. */
6011 static bool use_scroll_redrawwin;
6012 static bool use_scroll_status_wclear;
6014 /* The status window is used for polling keystrokes. */
6015 static WINDOW *status_win;
6017 /* Reading from the prompt? */
6018 static bool input_mode = FALSE;
6020 static bool status_empty = FALSE;
6022 /* Update status and title window. */
6023 static void
6024 report(const char *msg, ...)
6025 {
6026 struct view *view = display[current_view];
6028 if (input_mode)
6029 return;
6031 if (!view) {
6032 char buf[SIZEOF_STR];
6033 va_list args;
6035 va_start(args, msg);
6036 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6037 buf[sizeof(buf) - 1] = 0;
6038 buf[sizeof(buf) - 2] = '.';
6039 buf[sizeof(buf) - 3] = '.';
6040 buf[sizeof(buf) - 4] = '.';
6041 }
6042 va_end(args);
6043 die("%s", buf);
6044 }
6046 if (!status_empty || *msg) {
6047 va_list args;
6049 va_start(args, msg);
6051 wmove(status_win, 0, 0);
6052 if (view->has_scrolled && use_scroll_status_wclear)
6053 wclear(status_win);
6054 if (*msg) {
6055 vwprintw(status_win, msg, args);
6056 status_empty = FALSE;
6057 } else {
6058 status_empty = TRUE;
6059 }
6060 wclrtoeol(status_win);
6061 wnoutrefresh(status_win);
6063 va_end(args);
6064 }
6066 update_view_title(view);
6067 }
6069 static void
6070 init_display(void)
6071 {
6072 const char *term;
6073 int x, y;
6075 /* Initialize the curses library */
6076 if (isatty(STDIN_FILENO)) {
6077 cursed = !!initscr();
6078 opt_tty = stdin;
6079 } else {
6080 /* Leave stdin and stdout alone when acting as a pager. */
6081 opt_tty = fopen("/dev/tty", "r+");
6082 if (!opt_tty)
6083 die("Failed to open /dev/tty");
6084 cursed = !!newterm(NULL, opt_tty, opt_tty);
6085 }
6087 if (!cursed)
6088 die("Failed to initialize curses");
6090 nonl(); /* Disable conversion and detect newlines from input. */
6091 cbreak(); /* Take input chars one at a time, no wait for \n */
6092 noecho(); /* Don't echo input */
6093 leaveok(stdscr, FALSE);
6095 if (has_colors())
6096 init_colors();
6098 getmaxyx(stdscr, y, x);
6099 status_win = newwin(1, x, y - 1, 0);
6100 if (!status_win)
6101 die("Failed to create status window");
6103 /* Enable keyboard mapping */
6104 keypad(status_win, TRUE);
6105 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6107 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6108 set_tabsize(opt_tab_size);
6109 #else
6110 TABSIZE = opt_tab_size;
6111 #endif
6113 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6114 if (term && !strcmp(term, "gnome-terminal")) {
6115 /* In the gnome-terminal-emulator, the message from
6116 * scrolling up one line when impossible followed by
6117 * scrolling down one line causes corruption of the
6118 * status line. This is fixed by calling wclear. */
6119 use_scroll_status_wclear = TRUE;
6120 use_scroll_redrawwin = FALSE;
6122 } else if (term && !strcmp(term, "xrvt-xpm")) {
6123 /* No problems with full optimizations in xrvt-(unicode)
6124 * and aterm. */
6125 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6127 } else {
6128 /* When scrolling in (u)xterm the last line in the
6129 * scrolling direction will update slowly. */
6130 use_scroll_redrawwin = TRUE;
6131 use_scroll_status_wclear = FALSE;
6132 }
6133 }
6135 static int
6136 get_input(int prompt_position)
6137 {
6138 struct view *view;
6139 int i, key, cursor_y, cursor_x;
6141 if (prompt_position)
6142 input_mode = TRUE;
6144 while (TRUE) {
6145 bool loading = FALSE;
6147 foreach_view (view, i) {
6148 update_view(view);
6149 if (view_is_displayed(view) && view->has_scrolled &&
6150 use_scroll_redrawwin)
6151 redrawwin(view->win);
6152 view->has_scrolled = FALSE;
6153 if (view->pipe)
6154 loading = TRUE;
6155 }
6157 /* Update the cursor position. */
6158 if (prompt_position) {
6159 getbegyx(status_win, cursor_y, cursor_x);
6160 cursor_x = prompt_position;
6161 } else {
6162 view = display[current_view];
6163 getbegyx(view->win, cursor_y, cursor_x);
6164 cursor_x = view->width - 1;
6165 cursor_y += view->lineno - view->offset;
6166 }
6167 setsyx(cursor_y, cursor_x);
6169 /* Refresh, accept single keystroke of input */
6170 doupdate();
6171 nodelay(status_win, loading);
6172 key = wgetch(status_win);
6174 /* wgetch() with nodelay() enabled returns ERR when
6175 * there's no input. */
6176 if (key == ERR) {
6178 } else if (key == KEY_RESIZE) {
6179 int height, width;
6181 getmaxyx(stdscr, height, width);
6183 wresize(status_win, 1, width);
6184 mvwin(status_win, height - 1, 0);
6185 wnoutrefresh(status_win);
6186 resize_display();
6187 redraw_display(TRUE);
6189 } else {
6190 input_mode = FALSE;
6191 return key;
6192 }
6193 }
6194 }
6196 static char *
6197 prompt_input(const char *prompt, input_handler handler, void *data)
6198 {
6199 enum input_status status = INPUT_OK;
6200 static char buf[SIZEOF_STR];
6201 size_t pos = 0;
6203 buf[pos] = 0;
6205 while (status == INPUT_OK || status == INPUT_SKIP) {
6206 int key;
6208 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6209 wclrtoeol(status_win);
6211 key = get_input(pos + 1);
6212 switch (key) {
6213 case KEY_RETURN:
6214 case KEY_ENTER:
6215 case '\n':
6216 status = pos ? INPUT_STOP : INPUT_CANCEL;
6217 break;
6219 case KEY_BACKSPACE:
6220 if (pos > 0)
6221 buf[--pos] = 0;
6222 else
6223 status = INPUT_CANCEL;
6224 break;
6226 case KEY_ESC:
6227 status = INPUT_CANCEL;
6228 break;
6230 default:
6231 if (pos >= sizeof(buf)) {
6232 report("Input string too long");
6233 return NULL;
6234 }
6236 status = handler(data, buf, key);
6237 if (status == INPUT_OK)
6238 buf[pos++] = (char) key;
6239 }
6240 }
6242 /* Clear the status window */
6243 status_empty = FALSE;
6244 report("");
6246 if (status == INPUT_CANCEL)
6247 return NULL;
6249 buf[pos++] = 0;
6251 return buf;
6252 }
6254 static enum input_status
6255 prompt_yesno_handler(void *data, char *buf, int c)
6256 {
6257 if (c == 'y' || c == 'Y')
6258 return INPUT_STOP;
6259 if (c == 'n' || c == 'N')
6260 return INPUT_CANCEL;
6261 return INPUT_SKIP;
6262 }
6264 static bool
6265 prompt_yesno(const char *prompt)
6266 {
6267 char prompt2[SIZEOF_STR];
6269 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6270 return FALSE;
6272 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6273 }
6275 static enum input_status
6276 read_prompt_handler(void *data, char *buf, int c)
6277 {
6278 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6279 }
6281 static char *
6282 read_prompt(const char *prompt)
6283 {
6284 return prompt_input(prompt, read_prompt_handler, NULL);
6285 }
6287 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6288 {
6289 enum input_status status = INPUT_OK;
6290 int size = 0;
6292 while (items[size].text)
6293 size++;
6295 while (status == INPUT_OK) {
6296 const struct menu_item *item = &items[*selected];
6297 int key;
6298 int i;
6300 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6301 prompt, *selected + 1, size);
6302 if (item->hotkey)
6303 wprintw(status_win, "[%c] ", (char) item->hotkey);
6304 wprintw(status_win, "%s", item->text);
6305 wclrtoeol(status_win);
6307 key = get_input(COLS - 1);
6308 switch (key) {
6309 case KEY_RETURN:
6310 case KEY_ENTER:
6311 case '\n':
6312 status = INPUT_STOP;
6313 break;
6315 case KEY_LEFT:
6316 case KEY_UP:
6317 *selected = *selected - 1;
6318 if (*selected < 0)
6319 *selected = size - 1;
6320 break;
6322 case KEY_RIGHT:
6323 case KEY_DOWN:
6324 *selected = (*selected + 1) % size;
6325 break;
6327 case KEY_ESC:
6328 status = INPUT_CANCEL;
6329 break;
6331 default:
6332 for (i = 0; items[i].text; i++)
6333 if (items[i].hotkey == key) {
6334 *selected = i;
6335 status = INPUT_STOP;
6336 break;
6337 }
6338 }
6339 }
6341 /* Clear the status window */
6342 status_empty = FALSE;
6343 report("");
6345 return status != INPUT_CANCEL;
6346 }
6348 /*
6349 * Repository properties
6350 */
6352 static struct ref **refs = NULL;
6353 static size_t refs_size = 0;
6354 static struct ref *refs_head = NULL;
6356 static struct ref_list **ref_lists = NULL;
6357 static size_t ref_lists_size = 0;
6359 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6360 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6361 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6363 static int
6364 compare_refs(const void *ref1_, const void *ref2_)
6365 {
6366 const struct ref *ref1 = *(const struct ref **)ref1_;
6367 const struct ref *ref2 = *(const struct ref **)ref2_;
6369 if (ref1->tag != ref2->tag)
6370 return ref2->tag - ref1->tag;
6371 if (ref1->ltag != ref2->ltag)
6372 return ref2->ltag - ref2->ltag;
6373 if (ref1->head != ref2->head)
6374 return ref2->head - ref1->head;
6375 if (ref1->tracked != ref2->tracked)
6376 return ref2->tracked - ref1->tracked;
6377 if (ref1->remote != ref2->remote)
6378 return ref2->remote - ref1->remote;
6379 return strcmp(ref1->name, ref2->name);
6380 }
6382 static void
6383 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6384 {
6385 size_t i;
6387 for (i = 0; i < refs_size; i++)
6388 if (!visitor(data, refs[i]))
6389 break;
6390 }
6392 static struct ref *
6393 get_ref_head()
6394 {
6395 return refs_head;
6396 }
6398 static struct ref_list *
6399 get_ref_list(const char *id)
6400 {
6401 struct ref_list *list;
6402 size_t i;
6404 for (i = 0; i < ref_lists_size; i++)
6405 if (!strcmp(id, ref_lists[i]->id))
6406 return ref_lists[i];
6408 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6409 return NULL;
6410 list = calloc(1, sizeof(*list));
6411 if (!list)
6412 return NULL;
6414 for (i = 0; i < refs_size; i++) {
6415 if (!strcmp(id, refs[i]->id) &&
6416 realloc_refs_list(&list->refs, list->size, 1))
6417 list->refs[list->size++] = refs[i];
6418 }
6420 if (!list->refs) {
6421 free(list);
6422 return NULL;
6423 }
6425 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6426 ref_lists[ref_lists_size++] = list;
6427 return list;
6428 }
6430 static int
6431 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6432 {
6433 struct ref *ref = NULL;
6434 bool tag = FALSE;
6435 bool ltag = FALSE;
6436 bool remote = FALSE;
6437 bool tracked = FALSE;
6438 bool head = FALSE;
6439 int from = 0, to = refs_size - 1;
6441 if (!prefixcmp(name, "refs/tags/")) {
6442 if (!suffixcmp(name, namelen, "^{}")) {
6443 namelen -= 3;
6444 name[namelen] = 0;
6445 } else {
6446 ltag = TRUE;
6447 }
6449 tag = TRUE;
6450 namelen -= STRING_SIZE("refs/tags/");
6451 name += STRING_SIZE("refs/tags/");
6453 } else if (!prefixcmp(name, "refs/remotes/")) {
6454 remote = TRUE;
6455 namelen -= STRING_SIZE("refs/remotes/");
6456 name += STRING_SIZE("refs/remotes/");
6457 tracked = !strcmp(opt_remote, name);
6459 } else if (!prefixcmp(name, "refs/heads/")) {
6460 namelen -= STRING_SIZE("refs/heads/");
6461 name += STRING_SIZE("refs/heads/");
6462 if (!strncmp(opt_head, name, namelen))
6463 return OK;
6465 } else if (!strcmp(name, "HEAD")) {
6466 head = TRUE;
6467 if (*opt_head) {
6468 namelen = strlen(opt_head);
6469 name = opt_head;
6470 }
6471 }
6473 /* If we are reloading or it's an annotated tag, replace the
6474 * previous SHA1 with the resolved commit id; relies on the fact
6475 * git-ls-remote lists the commit id of an annotated tag right
6476 * before the commit id it points to. */
6477 while (from <= to) {
6478 size_t pos = (to + from) / 2;
6479 int cmp = strcmp(name, refs[pos]->name);
6481 if (!cmp) {
6482 ref = refs[pos];
6483 break;
6484 }
6486 if (cmp < 0)
6487 to = pos - 1;
6488 else
6489 from = pos + 1;
6490 }
6492 if (!ref) {
6493 if (!realloc_refs(&refs, refs_size, 1))
6494 return ERR;
6495 ref = calloc(1, sizeof(*ref) + namelen);
6496 if (!ref)
6497 return ERR;
6498 memmove(refs + from + 1, refs + from,
6499 (refs_size - from) * sizeof(*refs));
6500 refs[from] = ref;
6501 strncpy(ref->name, name, namelen);
6502 refs_size++;
6503 }
6505 ref->head = head;
6506 ref->tag = tag;
6507 ref->ltag = ltag;
6508 ref->remote = remote;
6509 ref->tracked = tracked;
6510 string_copy_rev(ref->id, id);
6512 if (head)
6513 refs_head = ref;
6514 return OK;
6515 }
6517 static int
6518 load_refs(void)
6519 {
6520 const char *head_argv[] = {
6521 "git", "symbolic-ref", "HEAD", NULL
6522 };
6523 static const char *ls_remote_argv[SIZEOF_ARG] = {
6524 "git", "ls-remote", opt_git_dir, NULL
6525 };
6526 static bool init = FALSE;
6527 size_t i;
6529 if (!init) {
6530 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6531 die("TIG_LS_REMOTE contains too many arguments");
6532 init = TRUE;
6533 }
6535 if (!*opt_git_dir)
6536 return OK;
6538 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6539 !prefixcmp(opt_head, "refs/heads/")) {
6540 char *offset = opt_head + STRING_SIZE("refs/heads/");
6542 memmove(opt_head, offset, strlen(offset) + 1);
6543 }
6545 refs_head = NULL;
6546 for (i = 0; i < refs_size; i++)
6547 refs[i]->id[0] = 0;
6549 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6550 return ERR;
6552 /* Update the ref lists to reflect changes. */
6553 for (i = 0; i < ref_lists_size; i++) {
6554 struct ref_list *list = ref_lists[i];
6555 size_t old, new;
6557 for (old = new = 0; old < list->size; old++)
6558 if (!strcmp(list->id, list->refs[old]->id))
6559 list->refs[new++] = list->refs[old];
6560 list->size = new;
6561 }
6563 return OK;
6564 }
6566 static void
6567 set_remote_branch(const char *name, const char *value, size_t valuelen)
6568 {
6569 if (!strcmp(name, ".remote")) {
6570 string_ncopy(opt_remote, value, valuelen);
6572 } else if (*opt_remote && !strcmp(name, ".merge")) {
6573 size_t from = strlen(opt_remote);
6575 if (!prefixcmp(value, "refs/heads/"))
6576 value += STRING_SIZE("refs/heads/");
6578 if (!string_format_from(opt_remote, &from, "/%s", value))
6579 opt_remote[0] = 0;
6580 }
6581 }
6583 static void
6584 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6585 {
6586 const char *argv[SIZEOF_ARG] = { name, "=" };
6587 int argc = 1 + (cmd == option_set_command);
6588 enum option_code error;
6590 if (!argv_from_string(argv, &argc, value))
6591 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6592 else
6593 error = cmd(argc, argv);
6595 if (error != OPT_OK)
6596 warn("Option 'tig.%s': %s", name, option_errors[error]);
6597 }
6599 static bool
6600 set_environment_variable(const char *name, const char *value)
6601 {
6602 size_t len = strlen(name) + 1 + strlen(value) + 1;
6603 char *env = malloc(len);
6605 if (env &&
6606 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6607 putenv(env) == 0)
6608 return TRUE;
6609 free(env);
6610 return FALSE;
6611 }
6613 static void
6614 set_work_tree(const char *value)
6615 {
6616 char cwd[SIZEOF_STR];
6618 if (!getcwd(cwd, sizeof(cwd)))
6619 die("Failed to get cwd path: %s", strerror(errno));
6620 if (chdir(opt_git_dir) < 0)
6621 die("Failed to chdir(%s): %s", strerror(errno));
6622 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6623 die("Failed to get git path: %s", strerror(errno));
6624 if (chdir(cwd) < 0)
6625 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6626 if (chdir(value) < 0)
6627 die("Failed to chdir(%s): %s", value, strerror(errno));
6628 if (!getcwd(cwd, sizeof(cwd)))
6629 die("Failed to get cwd path: %s", strerror(errno));
6630 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6631 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6632 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6633 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6634 opt_is_inside_work_tree = TRUE;
6635 }
6637 static int
6638 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6639 {
6640 if (!strcmp(name, "i18n.commitencoding"))
6641 string_ncopy(opt_encoding, value, valuelen);
6643 else if (!strcmp(name, "core.editor"))
6644 string_ncopy(opt_editor, value, valuelen);
6646 else if (!strcmp(name, "core.worktree"))
6647 set_work_tree(value);
6649 else if (!prefixcmp(name, "tig.color."))
6650 set_repo_config_option(name + 10, value, option_color_command);
6652 else if (!prefixcmp(name, "tig.bind."))
6653 set_repo_config_option(name + 9, value, option_bind_command);
6655 else if (!prefixcmp(name, "tig."))
6656 set_repo_config_option(name + 4, value, option_set_command);
6658 else if (*opt_head && !prefixcmp(name, "branch.") &&
6659 !strncmp(name + 7, opt_head, strlen(opt_head)))
6660 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6662 return OK;
6663 }
6665 static int
6666 load_git_config(void)
6667 {
6668 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6670 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6671 }
6673 static int
6674 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6675 {
6676 if (!opt_git_dir[0]) {
6677 string_ncopy(opt_git_dir, name, namelen);
6679 } else if (opt_is_inside_work_tree == -1) {
6680 /* This can be 3 different values depending on the
6681 * version of git being used. If git-rev-parse does not
6682 * understand --is-inside-work-tree it will simply echo
6683 * the option else either "true" or "false" is printed.
6684 * Default to true for the unknown case. */
6685 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6687 } else if (*name == '.') {
6688 string_ncopy(opt_cdup, name, namelen);
6690 } else {
6691 string_ncopy(opt_prefix, name, namelen);
6692 }
6694 return OK;
6695 }
6697 static int
6698 load_repo_info(void)
6699 {
6700 const char *rev_parse_argv[] = {
6701 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6702 "--show-cdup", "--show-prefix", NULL
6703 };
6705 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6706 }
6709 /*
6710 * Main
6711 */
6713 static const char usage[] =
6714 "tig " TIG_VERSION " (" __DATE__ ")\n"
6715 "\n"
6716 "Usage: tig [options] [revs] [--] [paths]\n"
6717 " or: tig show [options] [revs] [--] [paths]\n"
6718 " or: tig blame [options] [rev] [--] path\n"
6719 " or: tig status\n"
6720 " or: tig < [git command output]\n"
6721 "\n"
6722 "Options:\n"
6723 " -v, --version Show version and exit\n"
6724 " -h, --help Show help message and exit";
6726 static void __NORETURN
6727 quit(int sig)
6728 {
6729 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6730 if (cursed)
6731 endwin();
6732 exit(0);
6733 }
6735 static void __NORETURN
6736 die(const char *err, ...)
6737 {
6738 va_list args;
6740 endwin();
6742 va_start(args, err);
6743 fputs("tig: ", stderr);
6744 vfprintf(stderr, err, args);
6745 fputs("\n", stderr);
6746 va_end(args);
6748 exit(1);
6749 }
6751 static void
6752 warn(const char *msg, ...)
6753 {
6754 va_list args;
6756 va_start(args, msg);
6757 fputs("tig warning: ", stderr);
6758 vfprintf(stderr, msg, args);
6759 fputs("\n", stderr);
6760 va_end(args);
6761 }
6763 static int
6764 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6765 {
6766 const char ***filter_args = data;
6768 return argv_append(filter_args, name) ? OK : ERR;
6769 }
6771 static void
6772 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6773 {
6774 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6775 const char **all_argv = NULL;
6777 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6778 !argv_append_array(&all_argv, argv) ||
6779 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6780 die("Failed to split arguments");
6781 argv_free(all_argv);
6782 free(all_argv);
6783 }
6785 static void
6786 filter_options(const char *argv[])
6787 {
6788 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6789 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6790 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6791 }
6793 static enum request
6794 parse_options(int argc, const char *argv[])
6795 {
6796 enum request request = REQ_VIEW_MAIN;
6797 const char *subcommand;
6798 bool seen_dashdash = FALSE;
6799 const char **filter_argv = NULL;
6800 int i;
6802 if (!isatty(STDIN_FILENO))
6803 return REQ_VIEW_PAGER;
6805 if (argc <= 1)
6806 return REQ_VIEW_MAIN;
6808 subcommand = argv[1];
6809 if (!strcmp(subcommand, "status")) {
6810 if (argc > 2)
6811 warn("ignoring arguments after `%s'", subcommand);
6812 return REQ_VIEW_STATUS;
6814 } else if (!strcmp(subcommand, "blame")) {
6815 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6816 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6817 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6819 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6820 die("invalid number of options to blame\n\n%s", usage);
6822 if (opt_rev_argv) {
6823 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6824 }
6826 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6827 return REQ_VIEW_BLAME;
6829 } else if (!strcmp(subcommand, "show")) {
6830 request = REQ_VIEW_DIFF;
6832 } else {
6833 subcommand = NULL;
6834 }
6836 for (i = 1 + !!subcommand; i < argc; i++) {
6837 const char *opt = argv[i];
6839 if (seen_dashdash) {
6840 argv_append(&opt_file_argv, opt);
6841 continue;
6843 } else if (!strcmp(opt, "--")) {
6844 seen_dashdash = TRUE;
6845 continue;
6847 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6848 printf("tig version %s\n", TIG_VERSION);
6849 quit(0);
6851 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6852 printf("%s\n", usage);
6853 quit(0);
6855 } else if (!strcmp(opt, "--all")) {
6856 argv_append(&opt_rev_argv, opt);
6857 continue;
6858 }
6860 if (!argv_append(&filter_argv, opt))
6861 die("command too long");
6862 }
6864 if (filter_argv)
6865 filter_options(filter_argv);
6867 return request;
6868 }
6870 int
6871 main(int argc, const char *argv[])
6872 {
6873 const char *codeset = "UTF-8";
6874 enum request request = parse_options(argc, argv);
6875 struct view *view;
6877 signal(SIGINT, quit);
6878 signal(SIGPIPE, SIG_IGN);
6880 if (setlocale(LC_ALL, "")) {
6881 codeset = nl_langinfo(CODESET);
6882 }
6884 if (load_repo_info() == ERR)
6885 die("Failed to load repo info.");
6887 if (load_options() == ERR)
6888 die("Failed to load user config.");
6890 if (load_git_config() == ERR)
6891 die("Failed to load repo config.");
6893 /* Require a git repository unless when running in pager mode. */
6894 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6895 die("Not a git repository");
6897 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6898 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6899 if (opt_iconv_in == ICONV_NONE)
6900 die("Failed to initialize character set conversion");
6901 }
6903 if (codeset && strcmp(codeset, "UTF-8")) {
6904 opt_iconv_out = iconv_open(codeset, "UTF-8");
6905 if (opt_iconv_out == ICONV_NONE)
6906 die("Failed to initialize character set conversion");
6907 }
6909 if (load_refs() == ERR)
6910 die("Failed to load refs.");
6912 init_display();
6914 while (view_driver(display[current_view], request)) {
6915 int key = get_input(0);
6917 view = display[current_view];
6918 request = get_keybinding(view->keymap, key);
6920 /* Some low-level request handling. This keeps access to
6921 * status_win restricted. */
6922 switch (request) {
6923 case REQ_NONE:
6924 report("Unknown key, press %s for help",
6925 get_key(view->keymap, REQ_VIEW_HELP));
6926 break;
6927 case REQ_PROMPT:
6928 {
6929 char *cmd = read_prompt(":");
6931 if (cmd && isdigit(*cmd)) {
6932 int lineno = view->lineno + 1;
6934 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6935 select_view_line(view, lineno - 1);
6936 report("");
6937 } else {
6938 report("Unable to parse '%s' as a line number", cmd);
6939 }
6941 } else if (cmd) {
6942 struct view *next = VIEW(REQ_VIEW_PAGER);
6943 const char *argv[SIZEOF_ARG] = { "git" };
6944 int argc = 1;
6946 /* When running random commands, initially show the
6947 * command in the title. However, it maybe later be
6948 * overwritten if a commit line is selected. */
6949 string_ncopy(next->ref, cmd, strlen(cmd));
6951 if (!argv_from_string(argv, &argc, cmd)) {
6952 report("Too many arguments");
6953 } else {
6954 open_argv(view, next, argv, NULL, OPEN_DEFAULT);
6955 }
6956 }
6958 request = REQ_NONE;
6959 break;
6960 }
6961 case REQ_SEARCH:
6962 case REQ_SEARCH_BACK:
6963 {
6964 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6965 char *search = read_prompt(prompt);
6967 if (search)
6968 string_ncopy(opt_search, search, strlen(search));
6969 else if (*opt_search)
6970 request = request == REQ_SEARCH ?
6971 REQ_FIND_NEXT :
6972 REQ_FIND_PREV;
6973 else
6974 request = REQ_NONE;
6975 break;
6976 }
6977 default:
6978 break;
6979 }
6980 }
6982 quit(0);
6984 return 0;
6985 }