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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();
2725 struct view *base_view = display[0];
2727 assert(flags ^ OPEN_REFRESH);
2729 if (view == prev && nviews == 1 && !reload) {
2730 report("Already in %s view", view->name);
2731 return;
2732 }
2734 if (view->git_dir && !opt_git_dir[0]) {
2735 report("The %s view is disabled in pager view", view->name);
2736 return;
2737 }
2739 if (split) {
2740 display[1] = view;
2741 current_view = 1;
2742 view->parent = prev;
2743 } else {
2744 /* Maximize the current view. */
2745 memset(display, 0, sizeof(display));
2746 current_view = 0;
2747 display[current_view] = view;
2748 }
2750 /* No prev signals that this is the first loaded view. */
2751 if (prev && view != prev) {
2752 view->prev = prev;
2753 }
2755 /* Resize the view when switching between split- and full-screen,
2756 * or when switching between two different full-screen views. */
2757 if (nviews != displayed_views() ||
2758 (nviews == 1 && base_view != display[0]))
2759 resize_display();
2761 if (split && prev->lineno - prev->offset >= prev->height) {
2762 /* Take the title line into account. */
2763 int lines = prev->lineno - prev->offset - prev->height + 1;
2765 /* Scroll the view that was split if the current line is
2766 * outside the new limited view. */
2767 do_scroll_view(prev, lines);
2768 }
2770 if (prev && view != prev && split && view_is_displayed(prev)) {
2771 /* "Blur" the previous view. */
2772 update_view_title(prev);
2773 }
2775 load_view(view, flags);
2776 }
2778 static void
2779 open_argv(struct view *prev, struct view *view, const char *argv[], const char *dir, enum open_flags flags)
2780 {
2781 enum request request = view - views + REQ_OFFSET + 1;
2783 if (view->pipe)
2784 end_update(view, TRUE);
2785 if (!prepare_io(view, dir, argv, FALSE)) {
2786 report("Failed to open %s view: %s", view->name, io_strerror(&view->io));
2787 } else {
2788 open_view(prev, request, flags | OPEN_PREPARED);
2789 }
2790 }
2792 static void
2793 open_file(struct view *prev, struct view *view, const char *file, enum open_flags flags)
2794 {
2795 enum request request = view - views + REQ_OFFSET + 1;
2796 const char *file_argv[] = { opt_cdup, file , NULL };
2798 if (view->pipe)
2799 end_update(view, TRUE);
2800 if (!argv_copy(&view->argv, file_argv)) {
2801 report("Failed to load %s: out of memory", file);
2802 } else {
2803 open_view(prev, request, flags | OPEN_PREPARED);
2804 }
2805 }
2807 static void
2808 open_external_viewer(const char *argv[], const char *dir)
2809 {
2810 def_prog_mode(); /* save current tty modes */
2811 endwin(); /* restore original tty modes */
2812 io_run_fg(argv, dir);
2813 fprintf(stderr, "Press Enter to continue");
2814 getc(opt_tty);
2815 reset_prog_mode();
2816 redraw_display(TRUE);
2817 }
2819 static void
2820 open_mergetool(const char *file)
2821 {
2822 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2824 open_external_viewer(mergetool_argv, opt_cdup);
2825 }
2827 static void
2828 open_editor(const char *file)
2829 {
2830 const char *editor_argv[] = { "vi", file, NULL };
2831 const char *editor;
2833 editor = getenv("GIT_EDITOR");
2834 if (!editor && *opt_editor)
2835 editor = opt_editor;
2836 if (!editor)
2837 editor = getenv("VISUAL");
2838 if (!editor)
2839 editor = getenv("EDITOR");
2840 if (!editor)
2841 editor = "vi";
2843 editor_argv[0] = editor;
2844 open_external_viewer(editor_argv, opt_cdup);
2845 }
2847 static void
2848 open_run_request(enum request request)
2849 {
2850 struct run_request *req = get_run_request(request);
2851 const char **argv = NULL;
2853 if (!req) {
2854 report("Unknown run request");
2855 return;
2856 }
2858 if (format_argv(&argv, req->argv, TRUE, FALSE))
2859 open_external_viewer(argv, NULL);
2860 if (argv)
2861 argv_free(argv);
2862 free(argv);
2863 }
2865 /*
2866 * User request switch noodle
2867 */
2869 static int
2870 view_driver(struct view *view, enum request request)
2871 {
2872 int i;
2874 if (request == REQ_NONE)
2875 return TRUE;
2877 if (request > REQ_NONE) {
2878 open_run_request(request);
2879 view_request(view, REQ_REFRESH);
2880 return TRUE;
2881 }
2883 request = view_request(view, request);
2884 if (request == REQ_NONE)
2885 return TRUE;
2887 switch (request) {
2888 case REQ_MOVE_UP:
2889 case REQ_MOVE_DOWN:
2890 case REQ_MOVE_PAGE_UP:
2891 case REQ_MOVE_PAGE_DOWN:
2892 case REQ_MOVE_FIRST_LINE:
2893 case REQ_MOVE_LAST_LINE:
2894 move_view(view, request);
2895 break;
2897 case REQ_SCROLL_FIRST_COL:
2898 case REQ_SCROLL_LEFT:
2899 case REQ_SCROLL_RIGHT:
2900 case REQ_SCROLL_LINE_DOWN:
2901 case REQ_SCROLL_LINE_UP:
2902 case REQ_SCROLL_PAGE_DOWN:
2903 case REQ_SCROLL_PAGE_UP:
2904 scroll_view(view, request);
2905 break;
2907 case REQ_VIEW_BLAME:
2908 if (!opt_file[0]) {
2909 report("No file chosen, press %s to open tree view",
2910 get_key(view->keymap, REQ_VIEW_TREE));
2911 break;
2912 }
2913 open_view(view, request, OPEN_DEFAULT);
2914 break;
2916 case REQ_VIEW_BLOB:
2917 if (!ref_blob[0]) {
2918 report("No file chosen, press %s to open tree view",
2919 get_key(view->keymap, REQ_VIEW_TREE));
2920 break;
2921 }
2922 open_view(view, request, OPEN_DEFAULT);
2923 break;
2925 case REQ_VIEW_PAGER:
2926 if (view == NULL) {
2927 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2928 die("Failed to open stdin");
2929 open_view(view, request, OPEN_PREPARED);
2930 break;
2931 }
2933 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2934 report("No pager content, press %s to run command from prompt",
2935 get_key(view->keymap, REQ_PROMPT));
2936 break;
2937 }
2938 open_view(view, request, OPEN_DEFAULT);
2939 break;
2941 case REQ_VIEW_STAGE:
2942 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2943 report("No stage content, press %s to open the status view and choose file",
2944 get_key(view->keymap, REQ_VIEW_STATUS));
2945 break;
2946 }
2947 open_view(view, request, OPEN_DEFAULT);
2948 break;
2950 case REQ_VIEW_STATUS:
2951 if (opt_is_inside_work_tree == FALSE) {
2952 report("The status view requires a working tree");
2953 break;
2954 }
2955 open_view(view, request, OPEN_DEFAULT);
2956 break;
2958 case REQ_VIEW_MAIN:
2959 case REQ_VIEW_DIFF:
2960 case REQ_VIEW_LOG:
2961 case REQ_VIEW_TREE:
2962 case REQ_VIEW_HELP:
2963 case REQ_VIEW_BRANCH:
2964 open_view(view, request, OPEN_DEFAULT);
2965 break;
2967 case REQ_NEXT:
2968 case REQ_PREVIOUS:
2969 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2971 if (view->parent) {
2972 int line;
2974 view = view->parent;
2975 line = view->lineno;
2976 move_view(view, request);
2977 if (view_is_displayed(view))
2978 update_view_title(view);
2979 if (line != view->lineno)
2980 view_request(view, REQ_ENTER);
2981 } else {
2982 move_view(view, request);
2983 }
2984 break;
2986 case REQ_VIEW_NEXT:
2987 {
2988 int nviews = displayed_views();
2989 int next_view = (current_view + 1) % nviews;
2991 if (next_view == current_view) {
2992 report("Only one view is displayed");
2993 break;
2994 }
2996 current_view = next_view;
2997 /* Blur out the title of the previous view. */
2998 update_view_title(view);
2999 report("");
3000 break;
3001 }
3002 case REQ_REFRESH:
3003 report("Refreshing is not yet supported for the %s view", view->name);
3004 break;
3006 case REQ_MAXIMIZE:
3007 if (displayed_views() == 2)
3008 maximize_view(view);
3009 break;
3011 case REQ_OPTIONS:
3012 case REQ_TOGGLE_LINENO:
3013 case REQ_TOGGLE_DATE:
3014 case REQ_TOGGLE_AUTHOR:
3015 case REQ_TOGGLE_GRAPHIC:
3016 case REQ_TOGGLE_REV_GRAPH:
3017 case REQ_TOGGLE_REFS:
3018 toggle_option(request);
3019 break;
3021 case REQ_TOGGLE_SORT_FIELD:
3022 case REQ_TOGGLE_SORT_ORDER:
3023 report("Sorting is not yet supported for the %s view", view->name);
3024 break;
3026 case REQ_SEARCH:
3027 case REQ_SEARCH_BACK:
3028 search_view(view, request);
3029 break;
3031 case REQ_FIND_NEXT:
3032 case REQ_FIND_PREV:
3033 find_next(view, request);
3034 break;
3036 case REQ_STOP_LOADING:
3037 foreach_view(view, i) {
3038 if (view->pipe)
3039 report("Stopped loading the %s view", view->name),
3040 end_update(view, TRUE);
3041 }
3042 break;
3044 case REQ_SHOW_VERSION:
3045 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3046 return TRUE;
3048 case REQ_SCREEN_REDRAW:
3049 redraw_display(TRUE);
3050 break;
3052 case REQ_EDIT:
3053 report("Nothing to edit");
3054 break;
3056 case REQ_ENTER:
3057 report("Nothing to enter");
3058 break;
3060 case REQ_VIEW_CLOSE:
3061 /* XXX: Mark closed views by letting view->prev point to the
3062 * view itself. Parents to closed view should never be
3063 * followed. */
3064 if (view->prev && view->prev != view) {
3065 maximize_view(view->prev);
3066 view->prev = view;
3067 break;
3068 }
3069 /* Fall-through */
3070 case REQ_QUIT:
3071 return FALSE;
3073 default:
3074 report("Unknown key, press %s for help",
3075 get_key(view->keymap, REQ_VIEW_HELP));
3076 return TRUE;
3077 }
3079 return TRUE;
3080 }
3083 /*
3084 * View backend utilities
3085 */
3087 enum sort_field {
3088 ORDERBY_NAME,
3089 ORDERBY_DATE,
3090 ORDERBY_AUTHOR,
3091 };
3093 struct sort_state {
3094 const enum sort_field *fields;
3095 size_t size, current;
3096 bool reverse;
3097 };
3099 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3100 #define get_sort_field(state) ((state).fields[(state).current])
3101 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3103 static void
3104 sort_view(struct view *view, enum request request, struct sort_state *state,
3105 int (*compare)(const void *, const void *))
3106 {
3107 switch (request) {
3108 case REQ_TOGGLE_SORT_FIELD:
3109 state->current = (state->current + 1) % state->size;
3110 break;
3112 case REQ_TOGGLE_SORT_ORDER:
3113 state->reverse = !state->reverse;
3114 break;
3115 default:
3116 die("Not a sort request");
3117 }
3119 qsort(view->line, view->lines, sizeof(*view->line), compare);
3120 redraw_view(view);
3121 }
3123 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3125 /* Small author cache to reduce memory consumption. It uses binary
3126 * search to lookup or find place to position new entries. No entries
3127 * are ever freed. */
3128 static const char *
3129 get_author(const char *name)
3130 {
3131 static const char **authors;
3132 static size_t authors_size;
3133 int from = 0, to = authors_size - 1;
3135 while (from <= to) {
3136 size_t pos = (to + from) / 2;
3137 int cmp = strcmp(name, authors[pos]);
3139 if (!cmp)
3140 return authors[pos];
3142 if (cmp < 0)
3143 to = pos - 1;
3144 else
3145 from = pos + 1;
3146 }
3148 if (!realloc_authors(&authors, authors_size, 1))
3149 return NULL;
3150 name = strdup(name);
3151 if (!name)
3152 return NULL;
3154 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3155 authors[from] = name;
3156 authors_size++;
3158 return name;
3159 }
3161 static void
3162 parse_timesec(struct time *time, const char *sec)
3163 {
3164 time->sec = (time_t) atol(sec);
3165 }
3167 static void
3168 parse_timezone(struct time *time, const char *zone)
3169 {
3170 long tz;
3172 tz = ('0' - zone[1]) * 60 * 60 * 10;
3173 tz += ('0' - zone[2]) * 60 * 60;
3174 tz += ('0' - zone[3]) * 60 * 10;
3175 tz += ('0' - zone[4]) * 60;
3177 if (zone[0] == '-')
3178 tz = -tz;
3180 time->tz = tz;
3181 time->sec -= tz;
3182 }
3184 /* Parse author lines where the name may be empty:
3185 * author <email@address.tld> 1138474660 +0100
3186 */
3187 static void
3188 parse_author_line(char *ident, const char **author, struct time *time)
3189 {
3190 char *nameend = strchr(ident, '<');
3191 char *emailend = strchr(ident, '>');
3193 if (nameend && emailend)
3194 *nameend = *emailend = 0;
3195 ident = chomp_string(ident);
3196 if (!*ident) {
3197 if (nameend)
3198 ident = chomp_string(nameend + 1);
3199 if (!*ident)
3200 ident = "Unknown";
3201 }
3203 *author = get_author(ident);
3205 /* Parse epoch and timezone */
3206 if (emailend && emailend[1] == ' ') {
3207 char *secs = emailend + 2;
3208 char *zone = strchr(secs, ' ');
3210 parse_timesec(time, secs);
3212 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3213 parse_timezone(time, zone + 1);
3214 }
3215 }
3217 /*
3218 * Pager backend
3219 */
3221 static bool
3222 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3223 {
3224 if (opt_line_number && draw_lineno(view, lineno))
3225 return TRUE;
3227 draw_text(view, line->type, line->data);
3228 return TRUE;
3229 }
3231 static bool
3232 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3233 {
3234 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3235 char ref[SIZEOF_STR];
3237 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3238 return TRUE;
3240 /* This is the only fatal call, since it can "corrupt" the buffer. */
3241 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3242 return FALSE;
3244 return TRUE;
3245 }
3247 static void
3248 add_pager_refs(struct view *view, struct line *line)
3249 {
3250 char buf[SIZEOF_STR];
3251 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3252 struct ref_list *list;
3253 size_t bufpos = 0, i;
3254 const char *sep = "Refs: ";
3255 bool is_tag = FALSE;
3257 assert(line->type == LINE_COMMIT);
3259 list = get_ref_list(commit_id);
3260 if (!list) {
3261 if (view->type == VIEW_DIFF)
3262 goto try_add_describe_ref;
3263 return;
3264 }
3266 for (i = 0; i < list->size; i++) {
3267 struct ref *ref = list->refs[i];
3268 const char *fmt = ref->tag ? "%s[%s]" :
3269 ref->remote ? "%s<%s>" : "%s%s";
3271 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3272 return;
3273 sep = ", ";
3274 if (ref->tag)
3275 is_tag = TRUE;
3276 }
3278 if (!is_tag && view->type == VIEW_DIFF) {
3279 try_add_describe_ref:
3280 /* Add <tag>-g<commit_id> "fake" reference. */
3281 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3282 return;
3283 }
3285 if (bufpos == 0)
3286 return;
3288 add_line_text(view, buf, LINE_PP_REFS);
3289 }
3291 static bool
3292 pager_read(struct view *view, char *data)
3293 {
3294 struct line *line;
3296 if (!data)
3297 return TRUE;
3299 line = add_line_text(view, data, get_line_type(data));
3300 if (!line)
3301 return FALSE;
3303 if (line->type == LINE_COMMIT &&
3304 (view->type == VIEW_DIFF ||
3305 view->type == VIEW_LOG))
3306 add_pager_refs(view, line);
3308 return TRUE;
3309 }
3311 static enum request
3312 pager_request(struct view *view, enum request request, struct line *line)
3313 {
3314 int split = 0;
3316 if (request != REQ_ENTER)
3317 return request;
3319 if (line->type == LINE_COMMIT &&
3320 (view->type == VIEW_LOG ||
3321 view->type == VIEW_PAGER)) {
3322 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3323 split = 1;
3324 }
3326 /* Always scroll the view even if it was split. That way
3327 * you can use Enter to scroll through the log view and
3328 * split open each commit diff. */
3329 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3331 /* FIXME: A minor workaround. Scrolling the view will call report("")
3332 * but if we are scrolling a non-current view this won't properly
3333 * update the view title. */
3334 if (split)
3335 update_view_title(view);
3337 return REQ_NONE;
3338 }
3340 static bool
3341 pager_grep(struct view *view, struct line *line)
3342 {
3343 const char *text[] = { line->data, NULL };
3345 return grep_text(view, text);
3346 }
3348 static void
3349 pager_select(struct view *view, struct line *line)
3350 {
3351 if (line->type == LINE_COMMIT) {
3352 char *text = (char *)line->data + STRING_SIZE("commit ");
3354 if (view->type != VIEW_PAGER)
3355 string_copy_rev(view->ref, text);
3356 string_copy_rev(ref_commit, text);
3357 }
3358 }
3360 static struct view_ops pager_ops = {
3361 "line",
3362 view_open,
3363 pager_read,
3364 pager_draw,
3365 pager_request,
3366 pager_grep,
3367 pager_select,
3368 };
3370 static bool
3371 log_open(struct view *view, enum open_flags flags)
3372 {
3373 static const char *log_argv[] = {
3374 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3375 };
3377 return begin_update(view, NULL, log_argv, flags);
3378 }
3380 static enum request
3381 log_request(struct view *view, enum request request, struct line *line)
3382 {
3383 switch (request) {
3384 case REQ_REFRESH:
3385 load_refs();
3386 refresh_view(view);
3387 return REQ_NONE;
3388 default:
3389 return pager_request(view, request, line);
3390 }
3391 }
3393 static struct view_ops log_ops = {
3394 "line",
3395 log_open,
3396 pager_read,
3397 pager_draw,
3398 log_request,
3399 pager_grep,
3400 pager_select,
3401 };
3403 static bool
3404 diff_open(struct view *view, enum open_flags flags)
3405 {
3406 static const char *diff_argv[] = {
3407 "git", "show", "--pretty=fuller", "--no-color", "--root",
3408 "--patch-with-stat", "--find-copies-harder", "-C",
3409 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3410 };
3412 return begin_update(view, NULL, diff_argv, flags);
3413 }
3415 static bool
3416 diff_read(struct view *view, char *data)
3417 {
3418 if (!data) {
3419 /* Fall back to retry if no diff will be shown. */
3420 if (view->lines == 0 && opt_file_argv) {
3421 int pos = argv_size(view->argv)
3422 - argv_size(opt_file_argv) - 1;
3424 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3425 for (; view->argv[pos]; pos++) {
3426 free((void *) view->argv[pos]);
3427 view->argv[pos] = NULL;
3428 }
3430 if (view->pipe)
3431 io_done(view->pipe);
3432 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3433 return FALSE;
3434 }
3435 }
3436 return TRUE;
3437 }
3439 return pager_read(view, data);
3440 }
3442 static struct view_ops diff_ops = {
3443 "line",
3444 diff_open,
3445 diff_read,
3446 pager_draw,
3447 pager_request,
3448 pager_grep,
3449 pager_select,
3450 };
3452 /*
3453 * Help backend
3454 */
3456 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
3458 static bool
3459 help_open_keymap_title(struct view *view, enum keymap keymap)
3460 {
3461 struct line *line;
3463 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3464 help_keymap_hidden[keymap] ? '+' : '-',
3465 enum_name(keymap_table[keymap]));
3466 if (line)
3467 line->other = keymap;
3469 return help_keymap_hidden[keymap];
3470 }
3472 static void
3473 help_open_keymap(struct view *view, enum keymap keymap)
3474 {
3475 const char *group = NULL;
3476 char buf[SIZEOF_STR];
3477 size_t bufpos;
3478 bool add_title = TRUE;
3479 int i;
3481 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3482 const char *key = NULL;
3484 if (req_info[i].request == REQ_NONE)
3485 continue;
3487 if (!req_info[i].request) {
3488 group = req_info[i].help;
3489 continue;
3490 }
3492 key = get_keys(keymap, req_info[i].request, TRUE);
3493 if (!key || !*key)
3494 continue;
3496 if (add_title && help_open_keymap_title(view, keymap))
3497 return;
3498 add_title = FALSE;
3500 if (group) {
3501 add_line_text(view, group, LINE_HELP_GROUP);
3502 group = NULL;
3503 }
3505 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3506 enum_name(req_info[i]), req_info[i].help);
3507 }
3509 group = "External commands:";
3511 for (i = 0; i < run_requests; i++) {
3512 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3513 const char *key;
3514 int argc;
3516 if (!req || req->keymap != keymap)
3517 continue;
3519 key = get_key_name(req->key);
3520 if (!*key)
3521 key = "(no key defined)";
3523 if (add_title && help_open_keymap_title(view, keymap))
3524 return;
3525 if (group) {
3526 add_line_text(view, group, LINE_HELP_GROUP);
3527 group = NULL;
3528 }
3530 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3531 if (!string_format_from(buf, &bufpos, "%s%s",
3532 argc ? " " : "", req->argv[argc]))
3533 return;
3535 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3536 }
3537 }
3539 static bool
3540 help_open(struct view *view, enum open_flags flags)
3541 {
3542 enum keymap keymap;
3544 reset_view(view);
3545 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3546 add_line_text(view, "", LINE_DEFAULT);
3548 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
3549 help_open_keymap(view, keymap);
3551 return TRUE;
3552 }
3554 static enum request
3555 help_request(struct view *view, enum request request, struct line *line)
3556 {
3557 switch (request) {
3558 case REQ_ENTER:
3559 if (line->type == LINE_HELP_KEYMAP) {
3560 help_keymap_hidden[line->other] =
3561 !help_keymap_hidden[line->other];
3562 refresh_view(view);
3563 }
3565 return REQ_NONE;
3566 default:
3567 return pager_request(view, request, line);
3568 }
3569 }
3571 static struct view_ops help_ops = {
3572 "line",
3573 help_open,
3574 NULL,
3575 pager_draw,
3576 help_request,
3577 pager_grep,
3578 pager_select,
3579 };
3582 /*
3583 * Tree backend
3584 */
3586 struct tree_stack_entry {
3587 struct tree_stack_entry *prev; /* Entry below this in the stack */
3588 unsigned long lineno; /* Line number to restore */
3589 char *name; /* Position of name in opt_path */
3590 };
3592 /* The top of the path stack. */
3593 static struct tree_stack_entry *tree_stack = NULL;
3594 unsigned long tree_lineno = 0;
3596 static void
3597 pop_tree_stack_entry(void)
3598 {
3599 struct tree_stack_entry *entry = tree_stack;
3601 tree_lineno = entry->lineno;
3602 entry->name[0] = 0;
3603 tree_stack = entry->prev;
3604 free(entry);
3605 }
3607 static void
3608 push_tree_stack_entry(const char *name, unsigned long lineno)
3609 {
3610 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3611 size_t pathlen = strlen(opt_path);
3613 if (!entry)
3614 return;
3616 entry->prev = tree_stack;
3617 entry->name = opt_path + pathlen;
3618 tree_stack = entry;
3620 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3621 pop_tree_stack_entry();
3622 return;
3623 }
3625 /* Move the current line to the first tree entry. */
3626 tree_lineno = 1;
3627 entry->lineno = lineno;
3628 }
3630 /* Parse output from git-ls-tree(1):
3631 *
3632 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3633 */
3635 #define SIZEOF_TREE_ATTR \
3636 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3638 #define SIZEOF_TREE_MODE \
3639 STRING_SIZE("100644 ")
3641 #define TREE_ID_OFFSET \
3642 STRING_SIZE("100644 blob ")
3644 struct tree_entry {
3645 char id[SIZEOF_REV];
3646 mode_t mode;
3647 struct time time; /* Date from the author ident. */
3648 const char *author; /* Author of the commit. */
3649 char name[1];
3650 };
3652 static const char *
3653 tree_path(const struct line *line)
3654 {
3655 return ((struct tree_entry *) line->data)->name;
3656 }
3658 static int
3659 tree_compare_entry(const struct line *line1, const struct line *line2)
3660 {
3661 if (line1->type != line2->type)
3662 return line1->type == LINE_TREE_DIR ? -1 : 1;
3663 return strcmp(tree_path(line1), tree_path(line2));
3664 }
3666 static const enum sort_field tree_sort_fields[] = {
3667 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3668 };
3669 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3671 static int
3672 tree_compare(const void *l1, const void *l2)
3673 {
3674 const struct line *line1 = (const struct line *) l1;
3675 const struct line *line2 = (const struct line *) l2;
3676 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3677 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3679 if (line1->type == LINE_TREE_HEAD)
3680 return -1;
3681 if (line2->type == LINE_TREE_HEAD)
3682 return 1;
3684 switch (get_sort_field(tree_sort_state)) {
3685 case ORDERBY_DATE:
3686 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3688 case ORDERBY_AUTHOR:
3689 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3691 case ORDERBY_NAME:
3692 default:
3693 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3694 }
3695 }
3698 static struct line *
3699 tree_entry(struct view *view, enum line_type type, const char *path,
3700 const char *mode, const char *id)
3701 {
3702 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3703 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3705 if (!entry || !line) {
3706 free(entry);
3707 return NULL;
3708 }
3710 strncpy(entry->name, path, strlen(path));
3711 if (mode)
3712 entry->mode = strtoul(mode, NULL, 8);
3713 if (id)
3714 string_copy_rev(entry->id, id);
3716 return line;
3717 }
3719 static bool
3720 tree_read_date(struct view *view, char *text, bool *read_date)
3721 {
3722 static const char *author_name;
3723 static struct time author_time;
3725 if (!text && *read_date) {
3726 *read_date = FALSE;
3727 return TRUE;
3729 } else if (!text) {
3730 char *path = *opt_path ? opt_path : ".";
3731 /* Find next entry to process */
3732 const char *log_file[] = {
3733 "git", "log", "--no-color", "--pretty=raw",
3734 "--cc", "--raw", view->id, "--", path, NULL
3735 };
3737 if (!view->lines) {
3738 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3739 report("Tree is empty");
3740 return TRUE;
3741 }
3743 if (!start_update(view, log_file, opt_cdup)) {
3744 report("Failed to load tree data");
3745 return TRUE;
3746 }
3748 *read_date = TRUE;
3749 return FALSE;
3751 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3752 parse_author_line(text + STRING_SIZE("author "),
3753 &author_name, &author_time);
3755 } else if (*text == ':') {
3756 char *pos;
3757 size_t annotated = 1;
3758 size_t i;
3760 pos = strchr(text, '\t');
3761 if (!pos)
3762 return TRUE;
3763 text = pos + 1;
3764 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3765 text += strlen(opt_path);
3766 pos = strchr(text, '/');
3767 if (pos)
3768 *pos = 0;
3770 for (i = 1; i < view->lines; i++) {
3771 struct line *line = &view->line[i];
3772 struct tree_entry *entry = line->data;
3774 annotated += !!entry->author;
3775 if (entry->author || strcmp(entry->name, text))
3776 continue;
3778 entry->author = author_name;
3779 entry->time = author_time;
3780 line->dirty = 1;
3781 break;
3782 }
3784 if (annotated == view->lines)
3785 io_kill(view->pipe);
3786 }
3787 return TRUE;
3788 }
3790 static bool
3791 tree_read(struct view *view, char *text)
3792 {
3793 static bool read_date = FALSE;
3794 struct tree_entry *data;
3795 struct line *entry, *line;
3796 enum line_type type;
3797 size_t textlen = text ? strlen(text) : 0;
3798 char *path = text + SIZEOF_TREE_ATTR;
3800 if (read_date || !text)
3801 return tree_read_date(view, text, &read_date);
3803 if (textlen <= SIZEOF_TREE_ATTR)
3804 return FALSE;
3805 if (view->lines == 0 &&
3806 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3807 return FALSE;
3809 /* Strip the path part ... */
3810 if (*opt_path) {
3811 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3812 size_t striplen = strlen(opt_path);
3814 if (pathlen > striplen)
3815 memmove(path, path + striplen,
3816 pathlen - striplen + 1);
3818 /* Insert "link" to parent directory. */
3819 if (view->lines == 1 &&
3820 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3821 return FALSE;
3822 }
3824 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3825 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3826 if (!entry)
3827 return FALSE;
3828 data = entry->data;
3830 /* Skip "Directory ..." and ".." line. */
3831 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3832 if (tree_compare_entry(line, entry) <= 0)
3833 continue;
3835 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3837 line->data = data;
3838 line->type = type;
3839 for (; line <= entry; line++)
3840 line->dirty = line->cleareol = 1;
3841 return TRUE;
3842 }
3844 if (tree_lineno > view->lineno) {
3845 view->lineno = tree_lineno;
3846 tree_lineno = 0;
3847 }
3849 return TRUE;
3850 }
3852 static bool
3853 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3854 {
3855 struct tree_entry *entry = line->data;
3857 if (line->type == LINE_TREE_HEAD) {
3858 if (draw_text(view, line->type, "Directory path /"))
3859 return TRUE;
3860 } else {
3861 if (draw_mode(view, entry->mode))
3862 return TRUE;
3864 if (draw_author(view, entry->author))
3865 return TRUE;
3867 if (draw_date(view, &entry->time))
3868 return TRUE;
3869 }
3871 draw_text(view, line->type, entry->name);
3872 return TRUE;
3873 }
3875 static void
3876 open_blob_editor(const char *id)
3877 {
3878 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3879 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3880 int fd = mkstemp(file);
3882 if (fd == -1)
3883 report("Failed to create temporary file");
3884 else if (!io_run_append(blob_argv, fd))
3885 report("Failed to save blob data to file");
3886 else
3887 open_editor(file);
3888 if (fd != -1)
3889 unlink(file);
3890 }
3892 static enum request
3893 tree_request(struct view *view, enum request request, struct line *line)
3894 {
3895 enum open_flags flags;
3896 struct tree_entry *entry = line->data;
3898 switch (request) {
3899 case REQ_VIEW_BLAME:
3900 if (line->type != LINE_TREE_FILE) {
3901 report("Blame only supported for files");
3902 return REQ_NONE;
3903 }
3905 string_copy(opt_ref, view->vid);
3906 return request;
3908 case REQ_EDIT:
3909 if (line->type != LINE_TREE_FILE) {
3910 report("Edit only supported for files");
3911 } else if (!is_head_commit(view->vid)) {
3912 open_blob_editor(entry->id);
3913 } else {
3914 open_editor(opt_file);
3915 }
3916 return REQ_NONE;
3918 case REQ_TOGGLE_SORT_FIELD:
3919 case REQ_TOGGLE_SORT_ORDER:
3920 sort_view(view, request, &tree_sort_state, tree_compare);
3921 return REQ_NONE;
3923 case REQ_PARENT:
3924 if (!*opt_path) {
3925 /* quit view if at top of tree */
3926 return REQ_VIEW_CLOSE;
3927 }
3928 /* fake 'cd ..' */
3929 line = &view->line[1];
3930 break;
3932 case REQ_ENTER:
3933 break;
3935 default:
3936 return request;
3937 }
3939 /* Cleanup the stack if the tree view is at a different tree. */
3940 while (!*opt_path && tree_stack)
3941 pop_tree_stack_entry();
3943 switch (line->type) {
3944 case LINE_TREE_DIR:
3945 /* Depending on whether it is a subdirectory or parent link
3946 * mangle the path buffer. */
3947 if (line == &view->line[1] && *opt_path) {
3948 pop_tree_stack_entry();
3950 } else {
3951 const char *basename = tree_path(line);
3953 push_tree_stack_entry(basename, view->lineno);
3954 }
3956 /* Trees and subtrees share the same ID, so they are not not
3957 * unique like blobs. */
3958 flags = OPEN_RELOAD;
3959 request = REQ_VIEW_TREE;
3960 break;
3962 case LINE_TREE_FILE:
3963 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3964 request = REQ_VIEW_BLOB;
3965 break;
3967 default:
3968 return REQ_NONE;
3969 }
3971 open_view(view, request, flags);
3972 if (request == REQ_VIEW_TREE)
3973 view->lineno = tree_lineno;
3975 return REQ_NONE;
3976 }
3978 static bool
3979 tree_grep(struct view *view, struct line *line)
3980 {
3981 struct tree_entry *entry = line->data;
3982 const char *text[] = {
3983 entry->name,
3984 opt_author ? entry->author : "",
3985 mkdate(&entry->time, opt_date),
3986 NULL
3987 };
3989 return grep_text(view, text);
3990 }
3992 static void
3993 tree_select(struct view *view, struct line *line)
3994 {
3995 struct tree_entry *entry = line->data;
3997 if (line->type == LINE_TREE_FILE) {
3998 string_copy_rev(ref_blob, entry->id);
3999 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4001 } else if (line->type != LINE_TREE_DIR) {
4002 return;
4003 }
4005 string_copy_rev(view->ref, entry->id);
4006 }
4008 static bool
4009 tree_open(struct view *view, enum open_flags flags)
4010 {
4011 static const char *tree_argv[] = {
4012 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4013 };
4015 if (view->lines == 0 && opt_prefix[0]) {
4016 char *pos = opt_prefix;
4018 while (pos && *pos) {
4019 char *end = strchr(pos, '/');
4021 if (end)
4022 *end = 0;
4023 push_tree_stack_entry(pos, 0);
4024 pos = end;
4025 if (end) {
4026 *end = '/';
4027 pos++;
4028 }
4029 }
4031 } else if (strcmp(view->vid, view->id)) {
4032 opt_path[0] = 0;
4033 }
4035 return begin_update(view, opt_cdup, tree_argv, flags);
4036 }
4038 static struct view_ops tree_ops = {
4039 "file",
4040 tree_open,
4041 tree_read,
4042 tree_draw,
4043 tree_request,
4044 tree_grep,
4045 tree_select,
4046 };
4048 static bool
4049 blob_open(struct view *view, enum open_flags flags)
4050 {
4051 static const char *blob_argv[] = {
4052 "git", "cat-file", "blob", "%(blob)", NULL
4053 };
4055 return begin_update(view, NULL, blob_argv, flags);
4056 }
4058 static bool
4059 blob_read(struct view *view, char *line)
4060 {
4061 if (!line)
4062 return TRUE;
4063 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4064 }
4066 static enum request
4067 blob_request(struct view *view, enum request request, struct line *line)
4068 {
4069 switch (request) {
4070 case REQ_EDIT:
4071 open_blob_editor(view->vid);
4072 return REQ_NONE;
4073 default:
4074 return pager_request(view, request, line);
4075 }
4076 }
4078 static struct view_ops blob_ops = {
4079 "line",
4080 blob_open,
4081 blob_read,
4082 pager_draw,
4083 blob_request,
4084 pager_grep,
4085 pager_select,
4086 };
4088 /*
4089 * Blame backend
4090 *
4091 * Loading the blame view is a two phase job:
4092 *
4093 * 1. File content is read either using opt_file from the
4094 * filesystem or using git-cat-file.
4095 * 2. Then blame information is incrementally added by
4096 * reading output from git-blame.
4097 */
4099 struct blame_commit {
4100 char id[SIZEOF_REV]; /* SHA1 ID. */
4101 char title[128]; /* First line of the commit message. */
4102 const char *author; /* Author of the commit. */
4103 struct time time; /* Date from the author ident. */
4104 char filename[128]; /* Name of file. */
4105 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4106 char parent_filename[128]; /* Parent/previous name of file. */
4107 };
4109 struct blame {
4110 struct blame_commit *commit;
4111 unsigned long lineno;
4112 char text[1];
4113 };
4115 static bool
4116 blame_open(struct view *view, enum open_flags flags)
4117 {
4118 char path[SIZEOF_STR];
4119 size_t i;
4121 if (!view->prev && *opt_prefix) {
4122 string_copy(path, opt_file);
4123 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4124 return FALSE;
4125 }
4127 if (*opt_ref || !io_open(&view->io, "%s%s", opt_cdup, opt_file)) {
4128 const char *blame_cat_file_argv[] = {
4129 "git", "cat-file", "blob", path, NULL
4130 };
4132 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4133 !start_update(view, blame_cat_file_argv, opt_cdup))
4134 return FALSE;
4135 }
4137 /* First pass: remove multiple references to the same commit. */
4138 for (i = 0; i < view->lines; i++) {
4139 struct blame *blame = view->line[i].data;
4141 if (blame->commit && blame->commit->id[0])
4142 blame->commit->id[0] = 0;
4143 else
4144 blame->commit = NULL;
4145 }
4147 /* Second pass: free existing references. */
4148 for (i = 0; i < view->lines; i++) {
4149 struct blame *blame = view->line[i].data;
4151 if (blame->commit)
4152 free(blame->commit);
4153 }
4155 setup_update(view, opt_file);
4156 string_format(view->ref, "%s ...", opt_file);
4158 return TRUE;
4159 }
4161 static struct blame_commit *
4162 get_blame_commit(struct view *view, const char *id)
4163 {
4164 size_t i;
4166 for (i = 0; i < view->lines; i++) {
4167 struct blame *blame = view->line[i].data;
4169 if (!blame->commit)
4170 continue;
4172 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4173 return blame->commit;
4174 }
4176 {
4177 struct blame_commit *commit = calloc(1, sizeof(*commit));
4179 if (commit)
4180 string_ncopy(commit->id, id, SIZEOF_REV);
4181 return commit;
4182 }
4183 }
4185 static bool
4186 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4187 {
4188 const char *pos = *posref;
4190 *posref = NULL;
4191 pos = strchr(pos + 1, ' ');
4192 if (!pos || !isdigit(pos[1]))
4193 return FALSE;
4194 *number = atoi(pos + 1);
4195 if (*number < min || *number > max)
4196 return FALSE;
4198 *posref = pos;
4199 return TRUE;
4200 }
4202 static struct blame_commit *
4203 parse_blame_commit(struct view *view, const char *text, int *blamed)
4204 {
4205 struct blame_commit *commit;
4206 struct blame *blame;
4207 const char *pos = text + SIZEOF_REV - 2;
4208 size_t orig_lineno = 0;
4209 size_t lineno;
4210 size_t group;
4212 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4213 return NULL;
4215 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4216 !parse_number(&pos, &lineno, 1, view->lines) ||
4217 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4218 return NULL;
4220 commit = get_blame_commit(view, text);
4221 if (!commit)
4222 return NULL;
4224 *blamed += group;
4225 while (group--) {
4226 struct line *line = &view->line[lineno + group - 1];
4228 blame = line->data;
4229 blame->commit = commit;
4230 blame->lineno = orig_lineno + group - 1;
4231 line->dirty = 1;
4232 }
4234 return commit;
4235 }
4237 static bool
4238 blame_read_file(struct view *view, const char *line, bool *read_file)
4239 {
4240 if (!line) {
4241 const char *blame_argv[] = {
4242 "git", "blame", "%(blameargs)", "--incremental",
4243 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4244 };
4246 if (view->lines == 0 && !view->prev)
4247 die("No blame exist for %s", view->vid);
4249 if (view->lines == 0 || !start_update(view, blame_argv, opt_cdup)) {
4250 report("Failed to load blame data");
4251 return TRUE;
4252 }
4254 *read_file = FALSE;
4255 return FALSE;
4257 } else {
4258 size_t linelen = strlen(line);
4259 struct blame *blame = malloc(sizeof(*blame) + linelen);
4261 if (!blame)
4262 return FALSE;
4264 blame->commit = NULL;
4265 strncpy(blame->text, line, linelen);
4266 blame->text[linelen] = 0;
4267 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4268 }
4269 }
4271 static bool
4272 match_blame_header(const char *name, char **line)
4273 {
4274 size_t namelen = strlen(name);
4275 bool matched = !strncmp(name, *line, namelen);
4277 if (matched)
4278 *line += namelen;
4280 return matched;
4281 }
4283 static bool
4284 blame_read(struct view *view, char *line)
4285 {
4286 static struct blame_commit *commit = NULL;
4287 static int blamed = 0;
4288 static bool read_file = TRUE;
4290 if (read_file)
4291 return blame_read_file(view, line, &read_file);
4293 if (!line) {
4294 /* Reset all! */
4295 commit = NULL;
4296 blamed = 0;
4297 read_file = TRUE;
4298 string_format(view->ref, "%s", view->vid);
4299 if (view_is_displayed(view)) {
4300 update_view_title(view);
4301 redraw_view_from(view, 0);
4302 }
4303 return TRUE;
4304 }
4306 if (!commit) {
4307 commit = parse_blame_commit(view, line, &blamed);
4308 string_format(view->ref, "%s %2d%%", view->vid,
4309 view->lines ? blamed * 100 / view->lines : 0);
4311 } else if (match_blame_header("author ", &line)) {
4312 commit->author = get_author(line);
4314 } else if (match_blame_header("author-time ", &line)) {
4315 parse_timesec(&commit->time, line);
4317 } else if (match_blame_header("author-tz ", &line)) {
4318 parse_timezone(&commit->time, line);
4320 } else if (match_blame_header("summary ", &line)) {
4321 string_ncopy(commit->title, line, strlen(line));
4323 } else if (match_blame_header("previous ", &line)) {
4324 if (strlen(line) <= SIZEOF_REV)
4325 return FALSE;
4326 string_copy_rev(commit->parent_id, line);
4327 line += SIZEOF_REV;
4328 string_ncopy(commit->parent_filename, line, strlen(line));
4330 } else if (match_blame_header("filename ", &line)) {
4331 string_ncopy(commit->filename, line, strlen(line));
4332 commit = NULL;
4333 }
4335 return TRUE;
4336 }
4338 static bool
4339 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4340 {
4341 struct blame *blame = line->data;
4342 struct time *time = NULL;
4343 const char *id = NULL, *author = NULL;
4345 if (blame->commit && *blame->commit->filename) {
4346 id = blame->commit->id;
4347 author = blame->commit->author;
4348 time = &blame->commit->time;
4349 }
4351 if (draw_date(view, time))
4352 return TRUE;
4354 if (draw_author(view, author))
4355 return TRUE;
4357 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4358 return TRUE;
4360 if (draw_lineno(view, lineno))
4361 return TRUE;
4363 draw_text(view, LINE_DEFAULT, blame->text);
4364 return TRUE;
4365 }
4367 static bool
4368 check_blame_commit(struct blame *blame, bool check_null_id)
4369 {
4370 if (!blame->commit)
4371 report("Commit data not loaded yet");
4372 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4373 report("No commit exist for the selected line");
4374 else
4375 return TRUE;
4376 return FALSE;
4377 }
4379 static void
4380 setup_blame_parent_line(struct view *view, struct blame *blame)
4381 {
4382 char from[SIZEOF_REF + SIZEOF_STR];
4383 char to[SIZEOF_REF + SIZEOF_STR];
4384 const char *diff_tree_argv[] = {
4385 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4386 "-U0", from, to, "--", NULL
4387 };
4388 struct io io;
4389 int parent_lineno = -1;
4390 int blamed_lineno = -1;
4391 char *line;
4393 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4394 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4395 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4396 return;
4398 while ((line = io_get(&io, '\n', TRUE))) {
4399 if (*line == '@') {
4400 char *pos = strchr(line, '+');
4402 parent_lineno = atoi(line + 4);
4403 if (pos)
4404 blamed_lineno = atoi(pos + 1);
4406 } else if (*line == '+' && parent_lineno != -1) {
4407 if (blame->lineno == blamed_lineno - 1 &&
4408 !strcmp(blame->text, line + 1)) {
4409 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4410 break;
4411 }
4412 blamed_lineno++;
4413 }
4414 }
4416 io_done(&io);
4417 }
4419 static enum request
4420 blame_request(struct view *view, enum request request, struct line *line)
4421 {
4422 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4423 struct blame *blame = line->data;
4425 switch (request) {
4426 case REQ_VIEW_BLAME:
4427 if (check_blame_commit(blame, TRUE)) {
4428 string_copy(opt_ref, blame->commit->id);
4429 string_copy(opt_file, blame->commit->filename);
4430 if (blame->lineno)
4431 view->lineno = blame->lineno;
4432 refresh_view(view);
4433 }
4434 break;
4436 case REQ_PARENT:
4437 if (!check_blame_commit(blame, TRUE))
4438 break;
4439 if (!*blame->commit->parent_id) {
4440 report("The selected commit has no parents");
4441 } else {
4442 string_copy_rev(opt_ref, blame->commit->parent_id);
4443 string_copy(opt_file, blame->commit->parent_filename);
4444 setup_blame_parent_line(view, blame);
4445 refresh_view(view);
4446 }
4447 break;
4449 case REQ_ENTER:
4450 if (!check_blame_commit(blame, FALSE))
4451 break;
4453 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4454 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4455 break;
4457 if (!strcmp(blame->commit->id, NULL_ID)) {
4458 struct view *diff = VIEW(REQ_VIEW_DIFF);
4459 const char *diff_index_argv[] = {
4460 "git", "diff-index", "--root", "--patch-with-stat",
4461 "-C", "-M", "HEAD", "--", view->vid, NULL
4462 };
4464 if (!*blame->commit->parent_id) {
4465 diff_index_argv[1] = "diff";
4466 diff_index_argv[2] = "--no-color";
4467 diff_index_argv[6] = "--";
4468 diff_index_argv[7] = "/dev/null";
4469 }
4471 open_argv(view, diff, diff_index_argv, NULL, flags);
4472 } else {
4473 open_view(view, REQ_VIEW_DIFF, flags);
4474 }
4475 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4476 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4477 break;
4479 default:
4480 return request;
4481 }
4483 return REQ_NONE;
4484 }
4486 static bool
4487 blame_grep(struct view *view, struct line *line)
4488 {
4489 struct blame *blame = line->data;
4490 struct blame_commit *commit = blame->commit;
4491 const char *text[] = {
4492 blame->text,
4493 commit ? commit->title : "",
4494 commit ? commit->id : "",
4495 commit && opt_author ? commit->author : "",
4496 commit ? mkdate(&commit->time, opt_date) : "",
4497 NULL
4498 };
4500 return grep_text(view, text);
4501 }
4503 static void
4504 blame_select(struct view *view, struct line *line)
4505 {
4506 struct blame *blame = line->data;
4507 struct blame_commit *commit = blame->commit;
4509 if (!commit)
4510 return;
4512 if (!strcmp(commit->id, NULL_ID))
4513 string_ncopy(ref_commit, "HEAD", 4);
4514 else
4515 string_copy_rev(ref_commit, commit->id);
4516 }
4518 static struct view_ops blame_ops = {
4519 "line",
4520 blame_open,
4521 blame_read,
4522 blame_draw,
4523 blame_request,
4524 blame_grep,
4525 blame_select,
4526 };
4528 /*
4529 * Branch backend
4530 */
4532 struct branch {
4533 const char *author; /* Author of the last commit. */
4534 struct time time; /* Date of the last activity. */
4535 const struct ref *ref; /* Name and commit ID information. */
4536 };
4538 static const struct ref branch_all;
4540 static const enum sort_field branch_sort_fields[] = {
4541 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4542 };
4543 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4545 static int
4546 branch_compare(const void *l1, const void *l2)
4547 {
4548 const struct branch *branch1 = ((const struct line *) l1)->data;
4549 const struct branch *branch2 = ((const struct line *) l2)->data;
4551 switch (get_sort_field(branch_sort_state)) {
4552 case ORDERBY_DATE:
4553 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4555 case ORDERBY_AUTHOR:
4556 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4558 case ORDERBY_NAME:
4559 default:
4560 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4561 }
4562 }
4564 static bool
4565 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4566 {
4567 struct branch *branch = line->data;
4568 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4570 if (draw_date(view, &branch->time))
4571 return TRUE;
4573 if (draw_author(view, branch->author))
4574 return TRUE;
4576 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4577 return TRUE;
4578 }
4580 static enum request
4581 branch_request(struct view *view, enum request request, struct line *line)
4582 {
4583 struct branch *branch = line->data;
4585 switch (request) {
4586 case REQ_REFRESH:
4587 load_refs();
4588 refresh_view(view);
4589 return REQ_NONE;
4591 case REQ_TOGGLE_SORT_FIELD:
4592 case REQ_TOGGLE_SORT_ORDER:
4593 sort_view(view, request, &branch_sort_state, branch_compare);
4594 return REQ_NONE;
4596 case REQ_ENTER:
4597 {
4598 const struct ref *ref = branch->ref;
4599 const char *all_branches_argv[] = {
4600 "git", "log", "--no-color", "--pretty=raw", "--parents",
4601 "--topo-order",
4602 ref == &branch_all ? "--all" : ref->name, NULL
4603 };
4604 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4606 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
4607 return REQ_NONE;
4608 }
4609 default:
4610 return request;
4611 }
4612 }
4614 static bool
4615 branch_read(struct view *view, char *line)
4616 {
4617 static char id[SIZEOF_REV];
4618 struct branch *reference;
4619 size_t i;
4621 if (!line)
4622 return TRUE;
4624 switch (get_line_type(line)) {
4625 case LINE_COMMIT:
4626 string_copy_rev(id, line + STRING_SIZE("commit "));
4627 return TRUE;
4629 case LINE_AUTHOR:
4630 for (i = 0, reference = NULL; i < view->lines; i++) {
4631 struct branch *branch = view->line[i].data;
4633 if (strcmp(branch->ref->id, id))
4634 continue;
4636 view->line[i].dirty = TRUE;
4637 if (reference) {
4638 branch->author = reference->author;
4639 branch->time = reference->time;
4640 continue;
4641 }
4643 parse_author_line(line + STRING_SIZE("author "),
4644 &branch->author, &branch->time);
4645 reference = branch;
4646 }
4647 return TRUE;
4649 default:
4650 return TRUE;
4651 }
4653 }
4655 static bool
4656 branch_open_visitor(void *data, const struct ref *ref)
4657 {
4658 struct view *view = data;
4659 struct branch *branch;
4661 if (ref->tag || ref->ltag || ref->remote)
4662 return TRUE;
4664 branch = calloc(1, sizeof(*branch));
4665 if (!branch)
4666 return FALSE;
4668 branch->ref = ref;
4669 return !!add_line_data(view, branch, LINE_DEFAULT);
4670 }
4672 static bool
4673 branch_open(struct view *view, enum open_flags flags)
4674 {
4675 const char *branch_log[] = {
4676 "git", "log", "--no-color", "--pretty=raw",
4677 "--simplify-by-decoration", "--all", NULL
4678 };
4680 if (!start_update(view, branch_log, NULL)) {
4681 report("Failed to load branch data");
4682 return TRUE;
4683 }
4685 setup_update(view, view->id);
4686 branch_open_visitor(view, &branch_all);
4687 foreach_ref(branch_open_visitor, view);
4688 view->p_restore = TRUE;
4690 return TRUE;
4691 }
4693 static bool
4694 branch_grep(struct view *view, struct line *line)
4695 {
4696 struct branch *branch = line->data;
4697 const char *text[] = {
4698 branch->ref->name,
4699 branch->author,
4700 NULL
4701 };
4703 return grep_text(view, text);
4704 }
4706 static void
4707 branch_select(struct view *view, struct line *line)
4708 {
4709 struct branch *branch = line->data;
4711 string_copy_rev(view->ref, branch->ref->id);
4712 string_copy_rev(ref_commit, branch->ref->id);
4713 string_copy_rev(ref_head, branch->ref->id);
4714 string_copy_rev(ref_branch, branch->ref->name);
4715 }
4717 static struct view_ops branch_ops = {
4718 "branch",
4719 branch_open,
4720 branch_read,
4721 branch_draw,
4722 branch_request,
4723 branch_grep,
4724 branch_select,
4725 };
4727 /*
4728 * Status backend
4729 */
4731 struct status {
4732 char status;
4733 struct {
4734 mode_t mode;
4735 char rev[SIZEOF_REV];
4736 char name[SIZEOF_STR];
4737 } old;
4738 struct {
4739 mode_t mode;
4740 char rev[SIZEOF_REV];
4741 char name[SIZEOF_STR];
4742 } new;
4743 };
4745 static char status_onbranch[SIZEOF_STR];
4746 static struct status stage_status;
4747 static enum line_type stage_line_type;
4748 static size_t stage_chunks;
4749 static int *stage_chunk;
4751 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4753 /* This should work even for the "On branch" line. */
4754 static inline bool
4755 status_has_none(struct view *view, struct line *line)
4756 {
4757 return line < view->line + view->lines && !line[1].data;
4758 }
4760 /* Get fields from the diff line:
4761 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4762 */
4763 static inline bool
4764 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4765 {
4766 const char *old_mode = buf + 1;
4767 const char *new_mode = buf + 8;
4768 const char *old_rev = buf + 15;
4769 const char *new_rev = buf + 56;
4770 const char *status = buf + 97;
4772 if (bufsize < 98 ||
4773 old_mode[-1] != ':' ||
4774 new_mode[-1] != ' ' ||
4775 old_rev[-1] != ' ' ||
4776 new_rev[-1] != ' ' ||
4777 status[-1] != ' ')
4778 return FALSE;
4780 file->status = *status;
4782 string_copy_rev(file->old.rev, old_rev);
4783 string_copy_rev(file->new.rev, new_rev);
4785 file->old.mode = strtoul(old_mode, NULL, 8);
4786 file->new.mode = strtoul(new_mode, NULL, 8);
4788 file->old.name[0] = file->new.name[0] = 0;
4790 return TRUE;
4791 }
4793 static bool
4794 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4795 {
4796 struct status *unmerged = NULL;
4797 char *buf;
4798 struct io io;
4800 if (!io_run(&io, IO_RD, opt_cdup, argv))
4801 return FALSE;
4803 add_line_data(view, NULL, type);
4805 while ((buf = io_get(&io, 0, TRUE))) {
4806 struct status *file = unmerged;
4808 if (!file) {
4809 file = calloc(1, sizeof(*file));
4810 if (!file || !add_line_data(view, file, type))
4811 goto error_out;
4812 }
4814 /* Parse diff info part. */
4815 if (status) {
4816 file->status = status;
4817 if (status == 'A')
4818 string_copy(file->old.rev, NULL_ID);
4820 } else if (!file->status || file == unmerged) {
4821 if (!status_get_diff(file, buf, strlen(buf)))
4822 goto error_out;
4824 buf = io_get(&io, 0, TRUE);
4825 if (!buf)
4826 break;
4828 /* Collapse all modified entries that follow an
4829 * associated unmerged entry. */
4830 if (unmerged == file) {
4831 unmerged->status = 'U';
4832 unmerged = NULL;
4833 } else if (file->status == 'U') {
4834 unmerged = file;
4835 }
4836 }
4838 /* Grab the old name for rename/copy. */
4839 if (!*file->old.name &&
4840 (file->status == 'R' || file->status == 'C')) {
4841 string_ncopy(file->old.name, buf, strlen(buf));
4843 buf = io_get(&io, 0, TRUE);
4844 if (!buf)
4845 break;
4846 }
4848 /* git-ls-files just delivers a NUL separated list of
4849 * file names similar to the second half of the
4850 * git-diff-* output. */
4851 string_ncopy(file->new.name, buf, strlen(buf));
4852 if (!*file->old.name)
4853 string_copy(file->old.name, file->new.name);
4854 file = NULL;
4855 }
4857 if (io_error(&io)) {
4858 error_out:
4859 io_done(&io);
4860 return FALSE;
4861 }
4863 if (!view->line[view->lines - 1].data)
4864 add_line_data(view, NULL, LINE_STAT_NONE);
4866 io_done(&io);
4867 return TRUE;
4868 }
4870 /* Don't show unmerged entries in the staged section. */
4871 static const char *status_diff_index_argv[] = {
4872 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4873 "--cached", "-M", "HEAD", NULL
4874 };
4876 static const char *status_diff_files_argv[] = {
4877 "git", "diff-files", "-z", NULL
4878 };
4880 static const char *status_list_other_argv[] = {
4881 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4882 };
4884 static const char *status_list_no_head_argv[] = {
4885 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4886 };
4888 static const char *update_index_argv[] = {
4889 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4890 };
4892 /* Restore the previous line number to stay in the context or select a
4893 * line with something that can be updated. */
4894 static void
4895 status_restore(struct view *view)
4896 {
4897 if (view->p_lineno >= view->lines)
4898 view->p_lineno = view->lines - 1;
4899 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4900 view->p_lineno++;
4901 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4902 view->p_lineno--;
4904 /* If the above fails, always skip the "On branch" line. */
4905 if (view->p_lineno < view->lines)
4906 view->lineno = view->p_lineno;
4907 else
4908 view->lineno = 1;
4910 if (view->lineno < view->offset)
4911 view->offset = view->lineno;
4912 else if (view->offset + view->height <= view->lineno)
4913 view->offset = view->lineno - view->height + 1;
4915 view->p_restore = FALSE;
4916 }
4918 static void
4919 status_update_onbranch(void)
4920 {
4921 static const char *paths[][2] = {
4922 { "rebase-apply/rebasing", "Rebasing" },
4923 { "rebase-apply/applying", "Applying mailbox" },
4924 { "rebase-apply/", "Rebasing mailbox" },
4925 { "rebase-merge/interactive", "Interactive rebase" },
4926 { "rebase-merge/", "Rebase merge" },
4927 { "MERGE_HEAD", "Merging" },
4928 { "BISECT_LOG", "Bisecting" },
4929 { "HEAD", "On branch" },
4930 };
4931 char buf[SIZEOF_STR];
4932 struct stat stat;
4933 int i;
4935 if (is_initial_commit()) {
4936 string_copy(status_onbranch, "Initial commit");
4937 return;
4938 }
4940 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4941 char *head = opt_head;
4943 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4944 lstat(buf, &stat) < 0)
4945 continue;
4947 if (!*opt_head) {
4948 struct io io;
4950 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4951 io_read_buf(&io, buf, sizeof(buf))) {
4952 head = buf;
4953 if (!prefixcmp(head, "refs/heads/"))
4954 head += STRING_SIZE("refs/heads/");
4955 }
4956 }
4958 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4959 string_copy(status_onbranch, opt_head);
4960 return;
4961 }
4963 string_copy(status_onbranch, "Not currently on any branch");
4964 }
4966 /* First parse staged info using git-diff-index(1), then parse unstaged
4967 * info using git-diff-files(1), and finally untracked files using
4968 * git-ls-files(1). */
4969 static bool
4970 status_open(struct view *view, enum open_flags flags)
4971 {
4972 reset_view(view);
4974 add_line_data(view, NULL, LINE_STAT_HEAD);
4975 status_update_onbranch();
4977 io_run_bg(update_index_argv);
4979 if (is_initial_commit()) {
4980 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4981 return FALSE;
4982 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4983 return FALSE;
4984 }
4986 if (!opt_untracked_dirs_content)
4987 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
4989 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4990 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4991 return FALSE;
4993 /* Restore the exact position or use the specialized restore
4994 * mode? */
4995 if (!view->p_restore)
4996 status_restore(view);
4997 return TRUE;
4998 }
5000 static bool
5001 status_draw(struct view *view, struct line *line, unsigned int lineno)
5002 {
5003 struct status *status = line->data;
5004 enum line_type type;
5005 const char *text;
5007 if (!status) {
5008 switch (line->type) {
5009 case LINE_STAT_STAGED:
5010 type = LINE_STAT_SECTION;
5011 text = "Changes to be committed:";
5012 break;
5014 case LINE_STAT_UNSTAGED:
5015 type = LINE_STAT_SECTION;
5016 text = "Changed but not updated:";
5017 break;
5019 case LINE_STAT_UNTRACKED:
5020 type = LINE_STAT_SECTION;
5021 text = "Untracked files:";
5022 break;
5024 case LINE_STAT_NONE:
5025 type = LINE_DEFAULT;
5026 text = " (no files)";
5027 break;
5029 case LINE_STAT_HEAD:
5030 type = LINE_STAT_HEAD;
5031 text = status_onbranch;
5032 break;
5034 default:
5035 return FALSE;
5036 }
5037 } else {
5038 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5040 buf[0] = status->status;
5041 if (draw_text(view, line->type, buf))
5042 return TRUE;
5043 type = LINE_DEFAULT;
5044 text = status->new.name;
5045 }
5047 draw_text(view, type, text);
5048 return TRUE;
5049 }
5051 static enum request
5052 status_enter(struct view *view, struct line *line)
5053 {
5054 struct status *status = line->data;
5055 const char *oldpath = status ? status->old.name : NULL;
5056 /* Diffs for unmerged entries are empty when passing the new
5057 * path, so leave it empty. */
5058 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5059 const char *info;
5060 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5061 struct view *stage = VIEW(REQ_VIEW_STAGE);
5063 if (line->type == LINE_STAT_NONE ||
5064 (!status && line[1].type == LINE_STAT_NONE)) {
5065 report("No file to diff");
5066 return REQ_NONE;
5067 }
5069 switch (line->type) {
5070 case LINE_STAT_STAGED:
5071 if (is_initial_commit()) {
5072 const char *no_head_diff_argv[] = {
5073 "git", "diff", "--no-color", "--patch-with-stat",
5074 "--", "/dev/null", newpath, NULL
5075 };
5077 open_argv(view, stage, no_head_diff_argv, opt_cdup, flags);
5078 } else {
5079 const char *index_show_argv[] = {
5080 "git", "diff-index", "--root", "--patch-with-stat",
5081 "-C", "-M", "--cached", "HEAD", "--",
5082 oldpath, newpath, NULL
5083 };
5085 open_argv(view, stage, index_show_argv, opt_cdup, flags);
5086 }
5088 if (status)
5089 info = "Staged changes to %s";
5090 else
5091 info = "Staged changes";
5092 break;
5094 case LINE_STAT_UNSTAGED:
5095 {
5096 const char *files_show_argv[] = {
5097 "git", "diff-files", "--root", "--patch-with-stat",
5098 "-C", "-M", "--", oldpath, newpath, NULL
5099 };
5101 open_argv(view, stage, files_show_argv, opt_cdup, flags);
5102 if (status)
5103 info = "Unstaged changes to %s";
5104 else
5105 info = "Unstaged changes";
5106 break;
5107 }
5108 case LINE_STAT_UNTRACKED:
5109 if (!newpath) {
5110 report("No file to show");
5111 return REQ_NONE;
5112 }
5114 if (!suffixcmp(status->new.name, -1, "/")) {
5115 report("Cannot display a directory");
5116 return REQ_NONE;
5117 }
5119 open_file(view, stage, newpath, flags);
5120 info = "Untracked file %s";
5121 break;
5123 case LINE_STAT_HEAD:
5124 return REQ_NONE;
5126 default:
5127 die("line type %d not handled in switch", line->type);
5128 }
5130 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5131 if (status) {
5132 stage_status = *status;
5133 } else {
5134 memset(&stage_status, 0, sizeof(stage_status));
5135 }
5137 stage_line_type = line->type;
5138 stage_chunks = 0;
5139 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5140 }
5142 return REQ_NONE;
5143 }
5145 static bool
5146 status_exists(struct status *status, enum line_type type)
5147 {
5148 struct view *view = VIEW(REQ_VIEW_STATUS);
5149 unsigned long lineno;
5151 for (lineno = 0; lineno < view->lines; lineno++) {
5152 struct line *line = &view->line[lineno];
5153 struct status *pos = line->data;
5155 if (line->type != type)
5156 continue;
5157 if (!pos && (!status || !status->status) && line[1].data) {
5158 select_view_line(view, lineno);
5159 return TRUE;
5160 }
5161 if (pos && !strcmp(status->new.name, pos->new.name)) {
5162 select_view_line(view, lineno);
5163 return TRUE;
5164 }
5165 }
5167 return FALSE;
5168 }
5171 static bool
5172 status_update_prepare(struct io *io, enum line_type type)
5173 {
5174 const char *staged_argv[] = {
5175 "git", "update-index", "-z", "--index-info", NULL
5176 };
5177 const char *others_argv[] = {
5178 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5179 };
5181 switch (type) {
5182 case LINE_STAT_STAGED:
5183 return io_run(io, IO_WR, opt_cdup, staged_argv);
5185 case LINE_STAT_UNSTAGED:
5186 case LINE_STAT_UNTRACKED:
5187 return io_run(io, IO_WR, opt_cdup, others_argv);
5189 default:
5190 die("line type %d not handled in switch", type);
5191 return FALSE;
5192 }
5193 }
5195 static bool
5196 status_update_write(struct io *io, struct status *status, enum line_type type)
5197 {
5198 char buf[SIZEOF_STR];
5199 size_t bufsize = 0;
5201 switch (type) {
5202 case LINE_STAT_STAGED:
5203 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5204 status->old.mode,
5205 status->old.rev,
5206 status->old.name, 0))
5207 return FALSE;
5208 break;
5210 case LINE_STAT_UNSTAGED:
5211 case LINE_STAT_UNTRACKED:
5212 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5213 return FALSE;
5214 break;
5216 default:
5217 die("line type %d not handled in switch", type);
5218 }
5220 return io_write(io, buf, bufsize);
5221 }
5223 static bool
5224 status_update_file(struct status *status, enum line_type type)
5225 {
5226 struct io io;
5227 bool result;
5229 if (!status_update_prepare(&io, type))
5230 return FALSE;
5232 result = status_update_write(&io, status, type);
5233 return io_done(&io) && result;
5234 }
5236 static bool
5237 status_update_files(struct view *view, struct line *line)
5238 {
5239 char buf[sizeof(view->ref)];
5240 struct io io;
5241 bool result = TRUE;
5242 struct line *pos = view->line + view->lines;
5243 int files = 0;
5244 int file, done;
5245 int cursor_y = -1, cursor_x = -1;
5247 if (!status_update_prepare(&io, line->type))
5248 return FALSE;
5250 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5251 files++;
5253 string_copy(buf, view->ref);
5254 getsyx(cursor_y, cursor_x);
5255 for (file = 0, done = 5; result && file < files; line++, file++) {
5256 int almost_done = file * 100 / files;
5258 if (almost_done > done) {
5259 done = almost_done;
5260 string_format(view->ref, "updating file %u of %u (%d%% done)",
5261 file, files, done);
5262 update_view_title(view);
5263 setsyx(cursor_y, cursor_x);
5264 doupdate();
5265 }
5266 result = status_update_write(&io, line->data, line->type);
5267 }
5268 string_copy(view->ref, buf);
5270 return io_done(&io) && result;
5271 }
5273 static bool
5274 status_update(struct view *view)
5275 {
5276 struct line *line = &view->line[view->lineno];
5278 assert(view->lines);
5280 if (!line->data) {
5281 /* This should work even for the "On branch" line. */
5282 if (line < view->line + view->lines && !line[1].data) {
5283 report("Nothing to update");
5284 return FALSE;
5285 }
5287 if (!status_update_files(view, line + 1)) {
5288 report("Failed to update file status");
5289 return FALSE;
5290 }
5292 } else if (!status_update_file(line->data, line->type)) {
5293 report("Failed to update file status");
5294 return FALSE;
5295 }
5297 return TRUE;
5298 }
5300 static bool
5301 status_revert(struct status *status, enum line_type type, bool has_none)
5302 {
5303 if (!status || type != LINE_STAT_UNSTAGED) {
5304 if (type == LINE_STAT_STAGED) {
5305 report("Cannot revert changes to staged files");
5306 } else if (type == LINE_STAT_UNTRACKED) {
5307 report("Cannot revert changes to untracked files");
5308 } else if (has_none) {
5309 report("Nothing to revert");
5310 } else {
5311 report("Cannot revert changes to multiple files");
5312 }
5314 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5315 char mode[10] = "100644";
5316 const char *reset_argv[] = {
5317 "git", "update-index", "--cacheinfo", mode,
5318 status->old.rev, status->old.name, NULL
5319 };
5320 const char *checkout_argv[] = {
5321 "git", "checkout", "--", status->old.name, NULL
5322 };
5324 if (status->status == 'U') {
5325 string_format(mode, "%5o", status->old.mode);
5327 if (status->old.mode == 0 && status->new.mode == 0) {
5328 reset_argv[2] = "--force-remove";
5329 reset_argv[3] = status->old.name;
5330 reset_argv[4] = NULL;
5331 }
5333 if (!io_run_fg(reset_argv, opt_cdup))
5334 return FALSE;
5335 if (status->old.mode == 0 && status->new.mode == 0)
5336 return TRUE;
5337 }
5339 return io_run_fg(checkout_argv, opt_cdup);
5340 }
5342 return FALSE;
5343 }
5345 static enum request
5346 status_request(struct view *view, enum request request, struct line *line)
5347 {
5348 struct status *status = line->data;
5350 switch (request) {
5351 case REQ_STATUS_UPDATE:
5352 if (!status_update(view))
5353 return REQ_NONE;
5354 break;
5356 case REQ_STATUS_REVERT:
5357 if (!status_revert(status, line->type, status_has_none(view, line)))
5358 return REQ_NONE;
5359 break;
5361 case REQ_STATUS_MERGE:
5362 if (!status || status->status != 'U') {
5363 report("Merging only possible for files with unmerged status ('U').");
5364 return REQ_NONE;
5365 }
5366 open_mergetool(status->new.name);
5367 break;
5369 case REQ_EDIT:
5370 if (!status)
5371 return request;
5372 if (status->status == 'D') {
5373 report("File has been deleted.");
5374 return REQ_NONE;
5375 }
5377 open_editor(status->new.name);
5378 break;
5380 case REQ_VIEW_BLAME:
5381 if (status)
5382 opt_ref[0] = 0;
5383 return request;
5385 case REQ_ENTER:
5386 /* After returning the status view has been split to
5387 * show the stage view. No further reloading is
5388 * necessary. */
5389 return status_enter(view, line);
5391 case REQ_REFRESH:
5392 /* Simply reload the view. */
5393 break;
5395 default:
5396 return request;
5397 }
5399 refresh_view(view);
5401 return REQ_NONE;
5402 }
5404 static void
5405 status_select(struct view *view, struct line *line)
5406 {
5407 struct status *status = line->data;
5408 char file[SIZEOF_STR] = "all files";
5409 const char *text;
5410 const char *key;
5412 if (status && !string_format(file, "'%s'", status->new.name))
5413 return;
5415 if (!status && line[1].type == LINE_STAT_NONE)
5416 line++;
5418 switch (line->type) {
5419 case LINE_STAT_STAGED:
5420 text = "Press %s to unstage %s for commit";
5421 break;
5423 case LINE_STAT_UNSTAGED:
5424 text = "Press %s to stage %s for commit";
5425 break;
5427 case LINE_STAT_UNTRACKED:
5428 text = "Press %s to stage %s for addition";
5429 break;
5431 case LINE_STAT_HEAD:
5432 case LINE_STAT_NONE:
5433 text = "Nothing to update";
5434 break;
5436 default:
5437 die("line type %d not handled in switch", line->type);
5438 }
5440 if (status && status->status == 'U') {
5441 text = "Press %s to resolve conflict in %s";
5442 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5444 } else {
5445 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5446 }
5448 string_format(view->ref, text, key, file);
5449 if (status)
5450 string_copy(opt_file, status->new.name);
5451 }
5453 static bool
5454 status_grep(struct view *view, struct line *line)
5455 {
5456 struct status *status = line->data;
5458 if (status) {
5459 const char buf[2] = { status->status, 0 };
5460 const char *text[] = { status->new.name, buf, NULL };
5462 return grep_text(view, text);
5463 }
5465 return FALSE;
5466 }
5468 static struct view_ops status_ops = {
5469 "file",
5470 status_open,
5471 NULL,
5472 status_draw,
5473 status_request,
5474 status_grep,
5475 status_select,
5476 };
5479 static bool
5480 stage_diff_write(struct io *io, struct line *line, struct line *end)
5481 {
5482 while (line < end) {
5483 if (!io_write(io, line->data, strlen(line->data)) ||
5484 !io_write(io, "\n", 1))
5485 return FALSE;
5486 line++;
5487 if (line->type == LINE_DIFF_CHUNK ||
5488 line->type == LINE_DIFF_HEADER)
5489 break;
5490 }
5492 return TRUE;
5493 }
5495 static struct line *
5496 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5497 {
5498 for (; view->line < line; line--)
5499 if (line->type == type)
5500 return line;
5502 return NULL;
5503 }
5505 static bool
5506 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5507 {
5508 const char *apply_argv[SIZEOF_ARG] = {
5509 "git", "apply", "--whitespace=nowarn", NULL
5510 };
5511 struct line *diff_hdr;
5512 struct io io;
5513 int argc = 3;
5515 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5516 if (!diff_hdr)
5517 return FALSE;
5519 if (!revert)
5520 apply_argv[argc++] = "--cached";
5521 if (revert || stage_line_type == LINE_STAT_STAGED)
5522 apply_argv[argc++] = "-R";
5523 apply_argv[argc++] = "-";
5524 apply_argv[argc++] = NULL;
5525 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5526 return FALSE;
5528 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5529 !stage_diff_write(&io, chunk, view->line + view->lines))
5530 chunk = NULL;
5532 io_done(&io);
5533 io_run_bg(update_index_argv);
5535 return chunk ? TRUE : FALSE;
5536 }
5538 static bool
5539 stage_update(struct view *view, struct line *line)
5540 {
5541 struct line *chunk = NULL;
5543 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5544 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5546 if (chunk) {
5547 if (!stage_apply_chunk(view, chunk, FALSE)) {
5548 report("Failed to apply chunk");
5549 return FALSE;
5550 }
5552 } else if (!stage_status.status) {
5553 view = VIEW(REQ_VIEW_STATUS);
5555 for (line = view->line; line < view->line + view->lines; line++)
5556 if (line->type == stage_line_type)
5557 break;
5559 if (!status_update_files(view, line + 1)) {
5560 report("Failed to update files");
5561 return FALSE;
5562 }
5564 } else if (!status_update_file(&stage_status, stage_line_type)) {
5565 report("Failed to update file");
5566 return FALSE;
5567 }
5569 return TRUE;
5570 }
5572 static bool
5573 stage_revert(struct view *view, struct line *line)
5574 {
5575 struct line *chunk = NULL;
5577 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5578 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5580 if (chunk) {
5581 if (!prompt_yesno("Are you sure you want to revert changes?"))
5582 return FALSE;
5584 if (!stage_apply_chunk(view, chunk, TRUE)) {
5585 report("Failed to revert chunk");
5586 return FALSE;
5587 }
5588 return TRUE;
5590 } else {
5591 return status_revert(stage_status.status ? &stage_status : NULL,
5592 stage_line_type, FALSE);
5593 }
5594 }
5597 static void
5598 stage_next(struct view *view, struct line *line)
5599 {
5600 int i;
5602 if (!stage_chunks) {
5603 for (line = view->line; line < view->line + view->lines; line++) {
5604 if (line->type != LINE_DIFF_CHUNK)
5605 continue;
5607 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5608 report("Allocation failure");
5609 return;
5610 }
5612 stage_chunk[stage_chunks++] = line - view->line;
5613 }
5614 }
5616 for (i = 0; i < stage_chunks; i++) {
5617 if (stage_chunk[i] > view->lineno) {
5618 do_scroll_view(view, stage_chunk[i] - view->lineno);
5619 report("Chunk %d of %d", i + 1, stage_chunks);
5620 return;
5621 }
5622 }
5624 report("No next chunk found");
5625 }
5627 static enum request
5628 stage_request(struct view *view, enum request request, struct line *line)
5629 {
5630 switch (request) {
5631 case REQ_STATUS_UPDATE:
5632 if (!stage_update(view, line))
5633 return REQ_NONE;
5634 break;
5636 case REQ_STATUS_REVERT:
5637 if (!stage_revert(view, line))
5638 return REQ_NONE;
5639 break;
5641 case REQ_STAGE_NEXT:
5642 if (stage_line_type == LINE_STAT_UNTRACKED) {
5643 report("File is untracked; press %s to add",
5644 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5645 return REQ_NONE;
5646 }
5647 stage_next(view, line);
5648 return REQ_NONE;
5650 case REQ_EDIT:
5651 if (!stage_status.new.name[0])
5652 return request;
5653 if (stage_status.status == 'D') {
5654 report("File has been deleted.");
5655 return REQ_NONE;
5656 }
5658 open_editor(stage_status.new.name);
5659 break;
5661 case REQ_REFRESH:
5662 /* Reload everything ... */
5663 break;
5665 case REQ_VIEW_BLAME:
5666 if (stage_status.new.name[0]) {
5667 string_copy(opt_file, stage_status.new.name);
5668 opt_ref[0] = 0;
5669 }
5670 return request;
5672 case REQ_ENTER:
5673 return pager_request(view, request, line);
5675 default:
5676 return request;
5677 }
5679 refresh_view(view->parent);
5681 /* Check whether the staged entry still exists, and close the
5682 * stage view if it doesn't. */
5683 if (!status_exists(&stage_status, stage_line_type)) {
5684 status_restore(VIEW(REQ_VIEW_STATUS));
5685 return REQ_VIEW_CLOSE;
5686 }
5688 refresh_view(view);
5690 return REQ_NONE;
5691 }
5693 static struct view_ops stage_ops = {
5694 "line",
5695 view_open,
5696 pager_read,
5697 pager_draw,
5698 stage_request,
5699 pager_grep,
5700 pager_select,
5701 };
5704 /*
5705 * Revision graph
5706 */
5708 static const enum line_type graph_colors[] = {
5709 LINE_GRAPH_LINE_0,
5710 LINE_GRAPH_LINE_1,
5711 LINE_GRAPH_LINE_2,
5712 LINE_GRAPH_LINE_3,
5713 LINE_GRAPH_LINE_4,
5714 LINE_GRAPH_LINE_5,
5715 LINE_GRAPH_LINE_6,
5716 };
5718 static enum line_type get_graph_color(struct graph_symbol *symbol)
5719 {
5720 if (symbol->commit)
5721 return LINE_GRAPH_COMMIT;
5722 assert(symbol->color < ARRAY_SIZE(graph_colors));
5723 return graph_colors[symbol->color];
5724 }
5726 static bool
5727 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5728 {
5729 const char *chars = graph_symbol_to_utf8(symbol);
5731 return draw_text(view, color, chars + !!first);
5732 }
5734 static bool
5735 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5736 {
5737 const char *chars = graph_symbol_to_ascii(symbol);
5739 return draw_text(view, color, chars + !!first);
5740 }
5742 static bool
5743 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5744 {
5745 const chtype *chars = graph_symbol_to_chtype(symbol);
5747 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5748 }
5750 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5752 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5753 {
5754 static const draw_graph_fn fns[] = {
5755 draw_graph_ascii,
5756 draw_graph_chtype,
5757 draw_graph_utf8
5758 };
5759 draw_graph_fn fn = fns[opt_line_graphics];
5760 int i;
5762 for (i = 0; i < canvas->size; i++) {
5763 struct graph_symbol *symbol = &canvas->symbols[i];
5764 enum line_type color = get_graph_color(symbol);
5766 if (fn(view, symbol, color, i == 0))
5767 return TRUE;
5768 }
5770 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5771 }
5773 /*
5774 * Main view backend
5775 */
5777 struct commit {
5778 char id[SIZEOF_REV]; /* SHA1 ID. */
5779 char title[128]; /* First line of the commit message. */
5780 const char *author; /* Author of the commit. */
5781 struct time time; /* Date from the author ident. */
5782 struct ref_list *refs; /* Repository references. */
5783 struct graph_canvas graph; /* Ancestry chain graphics. */
5784 };
5786 static bool
5787 main_open(struct view *view, enum open_flags flags)
5788 {
5789 static const char *main_argv[] = {
5790 "git", "log", "--no-color", "--pretty=raw", "--parents",
5791 "--topo-order", "%(diffargs)", "%(revargs)",
5792 "--", "%(fileargs)", NULL
5793 };
5795 return begin_update(view, NULL, main_argv, flags);
5796 }
5798 static bool
5799 main_draw(struct view *view, struct line *line, unsigned int lineno)
5800 {
5801 struct commit *commit = line->data;
5803 if (!commit->author)
5804 return FALSE;
5806 if (draw_date(view, &commit->time))
5807 return TRUE;
5809 if (draw_author(view, commit->author))
5810 return TRUE;
5812 if (opt_rev_graph && draw_graph(view, &commit->graph))
5813 return TRUE;
5815 if (opt_show_refs && commit->refs) {
5816 size_t i;
5818 for (i = 0; i < commit->refs->size; i++) {
5819 struct ref *ref = commit->refs->refs[i];
5820 enum line_type type;
5822 if (ref->head)
5823 type = LINE_MAIN_HEAD;
5824 else if (ref->ltag)
5825 type = LINE_MAIN_LOCAL_TAG;
5826 else if (ref->tag)
5827 type = LINE_MAIN_TAG;
5828 else if (ref->tracked)
5829 type = LINE_MAIN_TRACKED;
5830 else if (ref->remote)
5831 type = LINE_MAIN_REMOTE;
5832 else
5833 type = LINE_MAIN_REF;
5835 if (draw_text(view, type, "[") ||
5836 draw_text(view, type, ref->name) ||
5837 draw_text(view, type, "]"))
5838 return TRUE;
5840 if (draw_text(view, LINE_DEFAULT, " "))
5841 return TRUE;
5842 }
5843 }
5845 draw_text(view, LINE_DEFAULT, commit->title);
5846 return TRUE;
5847 }
5849 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5850 static bool
5851 main_read(struct view *view, char *line)
5852 {
5853 static struct graph graph;
5854 enum line_type type;
5855 struct commit *commit;
5857 if (!line) {
5858 if (!view->lines && !view->prev)
5859 die("No revisions match the given arguments.");
5860 if (view->lines > 0) {
5861 commit = view->line[view->lines - 1].data;
5862 view->line[view->lines - 1].dirty = 1;
5863 if (!commit->author) {
5864 view->lines--;
5865 free(commit);
5866 }
5867 }
5869 done_graph(&graph);
5870 return TRUE;
5871 }
5873 type = get_line_type(line);
5874 if (type == LINE_COMMIT) {
5875 bool is_boundary;
5877 commit = calloc(1, sizeof(struct commit));
5878 if (!commit)
5879 return FALSE;
5881 line += STRING_SIZE("commit ");
5882 is_boundary = *line == '-';
5883 if (is_boundary)
5884 line++;
5886 string_copy_rev(commit->id, line);
5887 commit->refs = get_ref_list(commit->id);
5888 add_line_data(view, commit, LINE_MAIN_COMMIT);
5889 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5890 return TRUE;
5891 }
5893 if (!view->lines)
5894 return TRUE;
5895 commit = view->line[view->lines - 1].data;
5897 switch (type) {
5898 case LINE_PARENT:
5899 if (!graph.has_parents)
5900 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5901 break;
5903 case LINE_AUTHOR:
5904 parse_author_line(line + STRING_SIZE("author "),
5905 &commit->author, &commit->time);
5906 graph_render_parents(&graph);
5907 break;
5909 default:
5910 /* Fill in the commit title if it has not already been set. */
5911 if (commit->title[0])
5912 break;
5914 /* Require titles to start with a non-space character at the
5915 * offset used by git log. */
5916 if (strncmp(line, " ", 4))
5917 break;
5918 line += 4;
5919 /* Well, if the title starts with a whitespace character,
5920 * try to be forgiving. Otherwise we end up with no title. */
5921 while (isspace(*line))
5922 line++;
5923 if (*line == '\0')
5924 break;
5925 /* FIXME: More graceful handling of titles; append "..." to
5926 * shortened titles, etc. */
5928 string_expand(commit->title, sizeof(commit->title), line, 1);
5929 view->line[view->lines - 1].dirty = 1;
5930 }
5932 return TRUE;
5933 }
5935 static enum request
5936 main_request(struct view *view, enum request request, struct line *line)
5937 {
5938 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5940 switch (request) {
5941 case REQ_ENTER:
5942 if (view_is_displayed(view) && display[0] != view)
5943 maximize_view(view);
5944 open_view(view, REQ_VIEW_DIFF, flags);
5945 break;
5946 case REQ_REFRESH:
5947 load_refs();
5948 refresh_view(view);
5949 break;
5950 default:
5951 return request;
5952 }
5954 return REQ_NONE;
5955 }
5957 static bool
5958 grep_refs(struct ref_list *list, regex_t *regex)
5959 {
5960 regmatch_t pmatch;
5961 size_t i;
5963 if (!opt_show_refs || !list)
5964 return FALSE;
5966 for (i = 0; i < list->size; i++) {
5967 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5968 return TRUE;
5969 }
5971 return FALSE;
5972 }
5974 static bool
5975 main_grep(struct view *view, struct line *line)
5976 {
5977 struct commit *commit = line->data;
5978 const char *text[] = {
5979 commit->title,
5980 opt_author ? commit->author : "",
5981 mkdate(&commit->time, opt_date),
5982 NULL
5983 };
5985 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5986 }
5988 static void
5989 main_select(struct view *view, struct line *line)
5990 {
5991 struct commit *commit = line->data;
5993 string_copy_rev(view->ref, commit->id);
5994 string_copy_rev(ref_commit, view->ref);
5995 }
5997 static struct view_ops main_ops = {
5998 "commit",
5999 main_open,
6000 main_read,
6001 main_draw,
6002 main_request,
6003 main_grep,
6004 main_select,
6005 };
6008 /*
6009 * Status management
6010 */
6012 /* Whether or not the curses interface has been initialized. */
6013 static bool cursed = FALSE;
6015 /* Terminal hacks and workarounds. */
6016 static bool use_scroll_redrawwin;
6017 static bool use_scroll_status_wclear;
6019 /* The status window is used for polling keystrokes. */
6020 static WINDOW *status_win;
6022 /* Reading from the prompt? */
6023 static bool input_mode = FALSE;
6025 static bool status_empty = FALSE;
6027 /* Update status and title window. */
6028 static void
6029 report(const char *msg, ...)
6030 {
6031 struct view *view = display[current_view];
6033 if (input_mode)
6034 return;
6036 if (!view) {
6037 char buf[SIZEOF_STR];
6038 va_list args;
6040 va_start(args, msg);
6041 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6042 buf[sizeof(buf) - 1] = 0;
6043 buf[sizeof(buf) - 2] = '.';
6044 buf[sizeof(buf) - 3] = '.';
6045 buf[sizeof(buf) - 4] = '.';
6046 }
6047 va_end(args);
6048 die("%s", buf);
6049 }
6051 if (!status_empty || *msg) {
6052 va_list args;
6054 va_start(args, msg);
6056 wmove(status_win, 0, 0);
6057 if (view->has_scrolled && use_scroll_status_wclear)
6058 wclear(status_win);
6059 if (*msg) {
6060 vwprintw(status_win, msg, args);
6061 status_empty = FALSE;
6062 } else {
6063 status_empty = TRUE;
6064 }
6065 wclrtoeol(status_win);
6066 wnoutrefresh(status_win);
6068 va_end(args);
6069 }
6071 update_view_title(view);
6072 }
6074 static void
6075 init_display(void)
6076 {
6077 const char *term;
6078 int x, y;
6080 /* Initialize the curses library */
6081 if (isatty(STDIN_FILENO)) {
6082 cursed = !!initscr();
6083 opt_tty = stdin;
6084 } else {
6085 /* Leave stdin and stdout alone when acting as a pager. */
6086 opt_tty = fopen("/dev/tty", "r+");
6087 if (!opt_tty)
6088 die("Failed to open /dev/tty");
6089 cursed = !!newterm(NULL, opt_tty, opt_tty);
6090 }
6092 if (!cursed)
6093 die("Failed to initialize curses");
6095 nonl(); /* Disable conversion and detect newlines from input. */
6096 cbreak(); /* Take input chars one at a time, no wait for \n */
6097 noecho(); /* Don't echo input */
6098 leaveok(stdscr, FALSE);
6100 if (has_colors())
6101 init_colors();
6103 getmaxyx(stdscr, y, x);
6104 status_win = newwin(1, x, y - 1, 0);
6105 if (!status_win)
6106 die("Failed to create status window");
6108 /* Enable keyboard mapping */
6109 keypad(status_win, TRUE);
6110 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6112 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6113 set_tabsize(opt_tab_size);
6114 #else
6115 TABSIZE = opt_tab_size;
6116 #endif
6118 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6119 if (term && !strcmp(term, "gnome-terminal")) {
6120 /* In the gnome-terminal-emulator, the message from
6121 * scrolling up one line when impossible followed by
6122 * scrolling down one line causes corruption of the
6123 * status line. This is fixed by calling wclear. */
6124 use_scroll_status_wclear = TRUE;
6125 use_scroll_redrawwin = FALSE;
6127 } else if (term && !strcmp(term, "xrvt-xpm")) {
6128 /* No problems with full optimizations in xrvt-(unicode)
6129 * and aterm. */
6130 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6132 } else {
6133 /* When scrolling in (u)xterm the last line in the
6134 * scrolling direction will update slowly. */
6135 use_scroll_redrawwin = TRUE;
6136 use_scroll_status_wclear = FALSE;
6137 }
6138 }
6140 static int
6141 get_input(int prompt_position)
6142 {
6143 struct view *view;
6144 int i, key, cursor_y, cursor_x;
6146 if (prompt_position)
6147 input_mode = TRUE;
6149 while (TRUE) {
6150 bool loading = FALSE;
6152 foreach_view (view, i) {
6153 update_view(view);
6154 if (view_is_displayed(view) && view->has_scrolled &&
6155 use_scroll_redrawwin)
6156 redrawwin(view->win);
6157 view->has_scrolled = FALSE;
6158 if (view->pipe)
6159 loading = TRUE;
6160 }
6162 /* Update the cursor position. */
6163 if (prompt_position) {
6164 getbegyx(status_win, cursor_y, cursor_x);
6165 cursor_x = prompt_position;
6166 } else {
6167 view = display[current_view];
6168 getbegyx(view->win, cursor_y, cursor_x);
6169 cursor_x = view->width - 1;
6170 cursor_y += view->lineno - view->offset;
6171 }
6172 setsyx(cursor_y, cursor_x);
6174 /* Refresh, accept single keystroke of input */
6175 doupdate();
6176 nodelay(status_win, loading);
6177 key = wgetch(status_win);
6179 /* wgetch() with nodelay() enabled returns ERR when
6180 * there's no input. */
6181 if (key == ERR) {
6183 } else if (key == KEY_RESIZE) {
6184 int height, width;
6186 getmaxyx(stdscr, height, width);
6188 wresize(status_win, 1, width);
6189 mvwin(status_win, height - 1, 0);
6190 wnoutrefresh(status_win);
6191 resize_display();
6192 redraw_display(TRUE);
6194 } else {
6195 input_mode = FALSE;
6196 return key;
6197 }
6198 }
6199 }
6201 static char *
6202 prompt_input(const char *prompt, input_handler handler, void *data)
6203 {
6204 enum input_status status = INPUT_OK;
6205 static char buf[SIZEOF_STR];
6206 size_t pos = 0;
6208 buf[pos] = 0;
6210 while (status == INPUT_OK || status == INPUT_SKIP) {
6211 int key;
6213 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6214 wclrtoeol(status_win);
6216 key = get_input(pos + 1);
6217 switch (key) {
6218 case KEY_RETURN:
6219 case KEY_ENTER:
6220 case '\n':
6221 status = pos ? INPUT_STOP : INPUT_CANCEL;
6222 break;
6224 case KEY_BACKSPACE:
6225 if (pos > 0)
6226 buf[--pos] = 0;
6227 else
6228 status = INPUT_CANCEL;
6229 break;
6231 case KEY_ESC:
6232 status = INPUT_CANCEL;
6233 break;
6235 default:
6236 if (pos >= sizeof(buf)) {
6237 report("Input string too long");
6238 return NULL;
6239 }
6241 status = handler(data, buf, key);
6242 if (status == INPUT_OK)
6243 buf[pos++] = (char) key;
6244 }
6245 }
6247 /* Clear the status window */
6248 status_empty = FALSE;
6249 report("");
6251 if (status == INPUT_CANCEL)
6252 return NULL;
6254 buf[pos++] = 0;
6256 return buf;
6257 }
6259 static enum input_status
6260 prompt_yesno_handler(void *data, char *buf, int c)
6261 {
6262 if (c == 'y' || c == 'Y')
6263 return INPUT_STOP;
6264 if (c == 'n' || c == 'N')
6265 return INPUT_CANCEL;
6266 return INPUT_SKIP;
6267 }
6269 static bool
6270 prompt_yesno(const char *prompt)
6271 {
6272 char prompt2[SIZEOF_STR];
6274 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6275 return FALSE;
6277 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6278 }
6280 static enum input_status
6281 read_prompt_handler(void *data, char *buf, int c)
6282 {
6283 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6284 }
6286 static char *
6287 read_prompt(const char *prompt)
6288 {
6289 return prompt_input(prompt, read_prompt_handler, NULL);
6290 }
6292 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6293 {
6294 enum input_status status = INPUT_OK;
6295 int size = 0;
6297 while (items[size].text)
6298 size++;
6300 while (status == INPUT_OK) {
6301 const struct menu_item *item = &items[*selected];
6302 int key;
6303 int i;
6305 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6306 prompt, *selected + 1, size);
6307 if (item->hotkey)
6308 wprintw(status_win, "[%c] ", (char) item->hotkey);
6309 wprintw(status_win, "%s", item->text);
6310 wclrtoeol(status_win);
6312 key = get_input(COLS - 1);
6313 switch (key) {
6314 case KEY_RETURN:
6315 case KEY_ENTER:
6316 case '\n':
6317 status = INPUT_STOP;
6318 break;
6320 case KEY_LEFT:
6321 case KEY_UP:
6322 *selected = *selected - 1;
6323 if (*selected < 0)
6324 *selected = size - 1;
6325 break;
6327 case KEY_RIGHT:
6328 case KEY_DOWN:
6329 *selected = (*selected + 1) % size;
6330 break;
6332 case KEY_ESC:
6333 status = INPUT_CANCEL;
6334 break;
6336 default:
6337 for (i = 0; items[i].text; i++)
6338 if (items[i].hotkey == key) {
6339 *selected = i;
6340 status = INPUT_STOP;
6341 break;
6342 }
6343 }
6344 }
6346 /* Clear the status window */
6347 status_empty = FALSE;
6348 report("");
6350 return status != INPUT_CANCEL;
6351 }
6353 /*
6354 * Repository properties
6355 */
6357 static struct ref **refs = NULL;
6358 static size_t refs_size = 0;
6359 static struct ref *refs_head = NULL;
6361 static struct ref_list **ref_lists = NULL;
6362 static size_t ref_lists_size = 0;
6364 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6365 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6366 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6368 static int
6369 compare_refs(const void *ref1_, const void *ref2_)
6370 {
6371 const struct ref *ref1 = *(const struct ref **)ref1_;
6372 const struct ref *ref2 = *(const struct ref **)ref2_;
6374 if (ref1->tag != ref2->tag)
6375 return ref2->tag - ref1->tag;
6376 if (ref1->ltag != ref2->ltag)
6377 return ref2->ltag - ref2->ltag;
6378 if (ref1->head != ref2->head)
6379 return ref2->head - ref1->head;
6380 if (ref1->tracked != ref2->tracked)
6381 return ref2->tracked - ref1->tracked;
6382 if (ref1->remote != ref2->remote)
6383 return ref2->remote - ref1->remote;
6384 return strcmp(ref1->name, ref2->name);
6385 }
6387 static void
6388 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6389 {
6390 size_t i;
6392 for (i = 0; i < refs_size; i++)
6393 if (!visitor(data, refs[i]))
6394 break;
6395 }
6397 static struct ref *
6398 get_ref_head()
6399 {
6400 return refs_head;
6401 }
6403 static struct ref_list *
6404 get_ref_list(const char *id)
6405 {
6406 struct ref_list *list;
6407 size_t i;
6409 for (i = 0; i < ref_lists_size; i++)
6410 if (!strcmp(id, ref_lists[i]->id))
6411 return ref_lists[i];
6413 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6414 return NULL;
6415 list = calloc(1, sizeof(*list));
6416 if (!list)
6417 return NULL;
6419 for (i = 0; i < refs_size; i++) {
6420 if (!strcmp(id, refs[i]->id) &&
6421 realloc_refs_list(&list->refs, list->size, 1))
6422 list->refs[list->size++] = refs[i];
6423 }
6425 if (!list->refs) {
6426 free(list);
6427 return NULL;
6428 }
6430 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6431 ref_lists[ref_lists_size++] = list;
6432 return list;
6433 }
6435 static int
6436 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6437 {
6438 struct ref *ref = NULL;
6439 bool tag = FALSE;
6440 bool ltag = FALSE;
6441 bool remote = FALSE;
6442 bool tracked = FALSE;
6443 bool head = FALSE;
6444 int from = 0, to = refs_size - 1;
6446 if (!prefixcmp(name, "refs/tags/")) {
6447 if (!suffixcmp(name, namelen, "^{}")) {
6448 namelen -= 3;
6449 name[namelen] = 0;
6450 } else {
6451 ltag = TRUE;
6452 }
6454 tag = TRUE;
6455 namelen -= STRING_SIZE("refs/tags/");
6456 name += STRING_SIZE("refs/tags/");
6458 } else if (!prefixcmp(name, "refs/remotes/")) {
6459 remote = TRUE;
6460 namelen -= STRING_SIZE("refs/remotes/");
6461 name += STRING_SIZE("refs/remotes/");
6462 tracked = !strcmp(opt_remote, name);
6464 } else if (!prefixcmp(name, "refs/heads/")) {
6465 namelen -= STRING_SIZE("refs/heads/");
6466 name += STRING_SIZE("refs/heads/");
6467 if (!strncmp(opt_head, name, namelen))
6468 return OK;
6470 } else if (!strcmp(name, "HEAD")) {
6471 head = TRUE;
6472 if (*opt_head) {
6473 namelen = strlen(opt_head);
6474 name = opt_head;
6475 }
6476 }
6478 /* If we are reloading or it's an annotated tag, replace the
6479 * previous SHA1 with the resolved commit id; relies on the fact
6480 * git-ls-remote lists the commit id of an annotated tag right
6481 * before the commit id it points to. */
6482 while (from <= to) {
6483 size_t pos = (to + from) / 2;
6484 int cmp = strcmp(name, refs[pos]->name);
6486 if (!cmp) {
6487 ref = refs[pos];
6488 break;
6489 }
6491 if (cmp < 0)
6492 to = pos - 1;
6493 else
6494 from = pos + 1;
6495 }
6497 if (!ref) {
6498 if (!realloc_refs(&refs, refs_size, 1))
6499 return ERR;
6500 ref = calloc(1, sizeof(*ref) + namelen);
6501 if (!ref)
6502 return ERR;
6503 memmove(refs + from + 1, refs + from,
6504 (refs_size - from) * sizeof(*refs));
6505 refs[from] = ref;
6506 strncpy(ref->name, name, namelen);
6507 refs_size++;
6508 }
6510 ref->head = head;
6511 ref->tag = tag;
6512 ref->ltag = ltag;
6513 ref->remote = remote;
6514 ref->tracked = tracked;
6515 string_copy_rev(ref->id, id);
6517 if (head)
6518 refs_head = ref;
6519 return OK;
6520 }
6522 static int
6523 load_refs(void)
6524 {
6525 const char *head_argv[] = {
6526 "git", "symbolic-ref", "HEAD", NULL
6527 };
6528 static const char *ls_remote_argv[SIZEOF_ARG] = {
6529 "git", "ls-remote", opt_git_dir, NULL
6530 };
6531 static bool init = FALSE;
6532 size_t i;
6534 if (!init) {
6535 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6536 die("TIG_LS_REMOTE contains too many arguments");
6537 init = TRUE;
6538 }
6540 if (!*opt_git_dir)
6541 return OK;
6543 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6544 !prefixcmp(opt_head, "refs/heads/")) {
6545 char *offset = opt_head + STRING_SIZE("refs/heads/");
6547 memmove(opt_head, offset, strlen(offset) + 1);
6548 }
6550 refs_head = NULL;
6551 for (i = 0; i < refs_size; i++)
6552 refs[i]->id[0] = 0;
6554 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6555 return ERR;
6557 /* Update the ref lists to reflect changes. */
6558 for (i = 0; i < ref_lists_size; i++) {
6559 struct ref_list *list = ref_lists[i];
6560 size_t old, new;
6562 for (old = new = 0; old < list->size; old++)
6563 if (!strcmp(list->id, list->refs[old]->id))
6564 list->refs[new++] = list->refs[old];
6565 list->size = new;
6566 }
6568 return OK;
6569 }
6571 static void
6572 set_remote_branch(const char *name, const char *value, size_t valuelen)
6573 {
6574 if (!strcmp(name, ".remote")) {
6575 string_ncopy(opt_remote, value, valuelen);
6577 } else if (*opt_remote && !strcmp(name, ".merge")) {
6578 size_t from = strlen(opt_remote);
6580 if (!prefixcmp(value, "refs/heads/"))
6581 value += STRING_SIZE("refs/heads/");
6583 if (!string_format_from(opt_remote, &from, "/%s", value))
6584 opt_remote[0] = 0;
6585 }
6586 }
6588 static void
6589 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6590 {
6591 const char *argv[SIZEOF_ARG] = { name, "=" };
6592 int argc = 1 + (cmd == option_set_command);
6593 enum option_code error;
6595 if (!argv_from_string(argv, &argc, value))
6596 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6597 else
6598 error = cmd(argc, argv);
6600 if (error != OPT_OK)
6601 warn("Option 'tig.%s': %s", name, option_errors[error]);
6602 }
6604 static bool
6605 set_environment_variable(const char *name, const char *value)
6606 {
6607 size_t len = strlen(name) + 1 + strlen(value) + 1;
6608 char *env = malloc(len);
6610 if (env &&
6611 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6612 putenv(env) == 0)
6613 return TRUE;
6614 free(env);
6615 return FALSE;
6616 }
6618 static void
6619 set_work_tree(const char *value)
6620 {
6621 char cwd[SIZEOF_STR];
6623 if (!getcwd(cwd, sizeof(cwd)))
6624 die("Failed to get cwd path: %s", strerror(errno));
6625 if (chdir(opt_git_dir) < 0)
6626 die("Failed to chdir(%s): %s", strerror(errno));
6627 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6628 die("Failed to get git path: %s", strerror(errno));
6629 if (chdir(cwd) < 0)
6630 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6631 if (chdir(value) < 0)
6632 die("Failed to chdir(%s): %s", value, strerror(errno));
6633 if (!getcwd(cwd, sizeof(cwd)))
6634 die("Failed to get cwd path: %s", strerror(errno));
6635 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6636 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6637 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6638 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6639 opt_is_inside_work_tree = TRUE;
6640 }
6642 static int
6643 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6644 {
6645 if (!strcmp(name, "i18n.commitencoding"))
6646 string_ncopy(opt_encoding, value, valuelen);
6648 else if (!strcmp(name, "core.editor"))
6649 string_ncopy(opt_editor, value, valuelen);
6651 else if (!strcmp(name, "core.worktree"))
6652 set_work_tree(value);
6654 else if (!prefixcmp(name, "tig.color."))
6655 set_repo_config_option(name + 10, value, option_color_command);
6657 else if (!prefixcmp(name, "tig.bind."))
6658 set_repo_config_option(name + 9, value, option_bind_command);
6660 else if (!prefixcmp(name, "tig."))
6661 set_repo_config_option(name + 4, value, option_set_command);
6663 else if (*opt_head && !prefixcmp(name, "branch.") &&
6664 !strncmp(name + 7, opt_head, strlen(opt_head)))
6665 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6667 return OK;
6668 }
6670 static int
6671 load_git_config(void)
6672 {
6673 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6675 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6676 }
6678 static int
6679 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6680 {
6681 if (!opt_git_dir[0]) {
6682 string_ncopy(opt_git_dir, name, namelen);
6684 } else if (opt_is_inside_work_tree == -1) {
6685 /* This can be 3 different values depending on the
6686 * version of git being used. If git-rev-parse does not
6687 * understand --is-inside-work-tree it will simply echo
6688 * the option else either "true" or "false" is printed.
6689 * Default to true for the unknown case. */
6690 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6692 } else if (*name == '.') {
6693 string_ncopy(opt_cdup, name, namelen);
6695 } else {
6696 string_ncopy(opt_prefix, name, namelen);
6697 }
6699 return OK;
6700 }
6702 static int
6703 load_repo_info(void)
6704 {
6705 const char *rev_parse_argv[] = {
6706 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6707 "--show-cdup", "--show-prefix", NULL
6708 };
6710 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6711 }
6714 /*
6715 * Main
6716 */
6718 static const char usage[] =
6719 "tig " TIG_VERSION " (" __DATE__ ")\n"
6720 "\n"
6721 "Usage: tig [options] [revs] [--] [paths]\n"
6722 " or: tig show [options] [revs] [--] [paths]\n"
6723 " or: tig blame [options] [rev] [--] path\n"
6724 " or: tig status\n"
6725 " or: tig < [git command output]\n"
6726 "\n"
6727 "Options:\n"
6728 " -v, --version Show version and exit\n"
6729 " -h, --help Show help message and exit";
6731 static void __NORETURN
6732 quit(int sig)
6733 {
6734 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6735 if (cursed)
6736 endwin();
6737 exit(0);
6738 }
6740 static void __NORETURN
6741 die(const char *err, ...)
6742 {
6743 va_list args;
6745 endwin();
6747 va_start(args, err);
6748 fputs("tig: ", stderr);
6749 vfprintf(stderr, err, args);
6750 fputs("\n", stderr);
6751 va_end(args);
6753 exit(1);
6754 }
6756 static void
6757 warn(const char *msg, ...)
6758 {
6759 va_list args;
6761 va_start(args, msg);
6762 fputs("tig warning: ", stderr);
6763 vfprintf(stderr, msg, args);
6764 fputs("\n", stderr);
6765 va_end(args);
6766 }
6768 static int
6769 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6770 {
6771 const char ***filter_args = data;
6773 return argv_append(filter_args, name) ? OK : ERR;
6774 }
6776 static void
6777 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6778 {
6779 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6780 const char **all_argv = NULL;
6782 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6783 !argv_append_array(&all_argv, argv) ||
6784 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6785 die("Failed to split arguments");
6786 argv_free(all_argv);
6787 free(all_argv);
6788 }
6790 static void
6791 filter_options(const char *argv[])
6792 {
6793 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6794 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6795 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6796 }
6798 static enum request
6799 parse_options(int argc, const char *argv[])
6800 {
6801 enum request request = REQ_VIEW_MAIN;
6802 const char *subcommand;
6803 bool seen_dashdash = FALSE;
6804 const char **filter_argv = NULL;
6805 int i;
6807 if (!isatty(STDIN_FILENO))
6808 return REQ_VIEW_PAGER;
6810 if (argc <= 1)
6811 return REQ_VIEW_MAIN;
6813 subcommand = argv[1];
6814 if (!strcmp(subcommand, "status")) {
6815 if (argc > 2)
6816 warn("ignoring arguments after `%s'", subcommand);
6817 return REQ_VIEW_STATUS;
6819 } else if (!strcmp(subcommand, "blame")) {
6820 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6821 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6822 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6824 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6825 die("invalid number of options to blame\n\n%s", usage);
6827 if (opt_rev_argv) {
6828 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6829 }
6831 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6832 return REQ_VIEW_BLAME;
6834 } else if (!strcmp(subcommand, "show")) {
6835 request = REQ_VIEW_DIFF;
6837 } else {
6838 subcommand = NULL;
6839 }
6841 for (i = 1 + !!subcommand; i < argc; i++) {
6842 const char *opt = argv[i];
6844 if (seen_dashdash) {
6845 argv_append(&opt_file_argv, opt);
6846 continue;
6848 } else if (!strcmp(opt, "--")) {
6849 seen_dashdash = TRUE;
6850 continue;
6852 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6853 printf("tig version %s\n", TIG_VERSION);
6854 quit(0);
6856 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6857 printf("%s\n", usage);
6858 quit(0);
6860 } else if (!strcmp(opt, "--all")) {
6861 argv_append(&opt_rev_argv, opt);
6862 continue;
6863 }
6865 if (!argv_append(&filter_argv, opt))
6866 die("command too long");
6867 }
6869 if (filter_argv)
6870 filter_options(filter_argv);
6872 return request;
6873 }
6875 int
6876 main(int argc, const char *argv[])
6877 {
6878 const char *codeset = "UTF-8";
6879 enum request request = parse_options(argc, argv);
6880 struct view *view;
6882 signal(SIGINT, quit);
6883 signal(SIGPIPE, SIG_IGN);
6885 if (setlocale(LC_ALL, "")) {
6886 codeset = nl_langinfo(CODESET);
6887 }
6889 if (load_repo_info() == ERR)
6890 die("Failed to load repo info.");
6892 if (load_options() == ERR)
6893 die("Failed to load user config.");
6895 if (load_git_config() == ERR)
6896 die("Failed to load repo config.");
6898 /* Require a git repository unless when running in pager mode. */
6899 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6900 die("Not a git repository");
6902 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6903 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6904 if (opt_iconv_in == ICONV_NONE)
6905 die("Failed to initialize character set conversion");
6906 }
6908 if (codeset && strcmp(codeset, "UTF-8")) {
6909 opt_iconv_out = iconv_open(codeset, "UTF-8");
6910 if (opt_iconv_out == ICONV_NONE)
6911 die("Failed to initialize character set conversion");
6912 }
6914 if (load_refs() == ERR)
6915 die("Failed to load refs.");
6917 init_display();
6919 while (view_driver(display[current_view], request)) {
6920 int key = get_input(0);
6922 view = display[current_view];
6923 request = get_keybinding(view->keymap, key);
6925 /* Some low-level request handling. This keeps access to
6926 * status_win restricted. */
6927 switch (request) {
6928 case REQ_NONE:
6929 report("Unknown key, press %s for help",
6930 get_key(view->keymap, REQ_VIEW_HELP));
6931 break;
6932 case REQ_PROMPT:
6933 {
6934 char *cmd = read_prompt(":");
6936 if (cmd && isdigit(*cmd)) {
6937 int lineno = view->lineno + 1;
6939 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6940 select_view_line(view, lineno - 1);
6941 report("");
6942 } else {
6943 report("Unable to parse '%s' as a line number", cmd);
6944 }
6946 } else if (cmd) {
6947 struct view *next = VIEW(REQ_VIEW_PAGER);
6948 const char *argv[SIZEOF_ARG] = { "git" };
6949 int argc = 1;
6951 /* When running random commands, initially show the
6952 * command in the title. However, it maybe later be
6953 * overwritten if a commit line is selected. */
6954 string_ncopy(next->ref, cmd, strlen(cmd));
6956 if (!argv_from_string(argv, &argc, cmd)) {
6957 report("Too many arguments");
6958 } else {
6959 open_argv(view, next, argv, NULL, OPEN_DEFAULT);
6960 }
6961 }
6963 request = REQ_NONE;
6964 break;
6965 }
6966 case REQ_SEARCH:
6967 case REQ_SEARCH_BACK:
6968 {
6969 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6970 char *search = read_prompt(prompt);
6972 if (search)
6973 string_ncopy(opt_search, search, strlen(search));
6974 else if (*opt_search)
6975 request = request == REQ_SEARCH ?
6976 REQ_FIND_NEXT :
6977 REQ_FIND_PREV;
6978 else
6979 request = REQ_NONE;
6980 break;
6981 }
6982 default:
6983 break;
6984 }
6985 }
6987 quit(0);
6989 return 0;
6990 }