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1 /* Copyright (c) 2006-2010 Jonas Fonseca <fonseca@diku.dk>
2 *
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
14 #include "tig.h"
15 #include "io.h"
16 #include "graph.h"
18 static void __NORETURN die(const char *err, ...);
19 static void warn(const char *msg, ...);
20 static void report(const char *msg, ...);
23 struct ref {
24 char id[SIZEOF_REV]; /* Commit SHA1 ID */
25 unsigned int head:1; /* Is it the current HEAD? */
26 unsigned int tag:1; /* Is it a tag? */
27 unsigned int ltag:1; /* If so, is the tag local? */
28 unsigned int remote:1; /* Is it a remote ref? */
29 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
30 char name[1]; /* Ref name; tag or head names are shortened. */
31 };
33 struct ref_list {
34 char id[SIZEOF_REV]; /* Commit SHA1 ID */
35 size_t size; /* Number of refs. */
36 struct ref **refs; /* References for this ID. */
37 };
39 static struct ref *get_ref_head();
40 static struct ref_list *get_ref_list(const char *id);
41 static void foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data);
42 static int load_refs(void);
44 enum input_status {
45 INPUT_OK,
46 INPUT_SKIP,
47 INPUT_STOP,
48 INPUT_CANCEL
49 };
51 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
53 static char *prompt_input(const char *prompt, input_handler handler, void *data);
54 static bool prompt_yesno(const char *prompt);
56 struct menu_item {
57 int hotkey;
58 const char *text;
59 void *data;
60 };
62 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected);
64 enum graphic {
65 GRAPHIC_ASCII = 0,
66 GRAPHIC_DEFAULT,
67 GRAPHIC_UTF8
68 };
70 static const struct enum_map graphic_map[] = {
71 #define GRAPHIC_(name) ENUM_MAP(#name, GRAPHIC_##name)
72 GRAPHIC_(ASCII),
73 GRAPHIC_(DEFAULT),
74 GRAPHIC_(UTF8)
75 #undef GRAPHIC_
76 };
78 #define DATE_INFO \
79 DATE_(NO), \
80 DATE_(DEFAULT), \
81 DATE_(LOCAL), \
82 DATE_(RELATIVE), \
83 DATE_(SHORT)
85 enum date {
86 #define DATE_(name) DATE_##name
87 DATE_INFO
88 #undef DATE_
89 };
91 static const struct enum_map date_map[] = {
92 #define DATE_(name) ENUM_MAP(#name, DATE_##name)
93 DATE_INFO
94 #undef DATE_
95 };
97 struct time {
98 time_t sec;
99 int tz;
100 };
102 static inline int timecmp(const struct time *t1, const struct time *t2)
103 {
104 return t1->sec - t2->sec;
105 }
107 static const char *
108 mkdate(const struct time *time, enum date date)
109 {
110 static char buf[DATE_COLS + 1];
111 static const struct enum_map reldate[] = {
112 { "second", 1, 60 * 2 },
113 { "minute", 60, 60 * 60 * 2 },
114 { "hour", 60 * 60, 60 * 60 * 24 * 2 },
115 { "day", 60 * 60 * 24, 60 * 60 * 24 * 7 * 2 },
116 { "week", 60 * 60 * 24 * 7, 60 * 60 * 24 * 7 * 5 },
117 { "month", 60 * 60 * 24 * 30, 60 * 60 * 24 * 30 * 12 },
118 };
119 struct tm tm;
121 if (!date || !time || !time->sec)
122 return "";
124 if (date == DATE_RELATIVE) {
125 struct timeval now;
126 time_t date = time->sec + time->tz;
127 time_t seconds;
128 int i;
130 gettimeofday(&now, NULL);
131 seconds = now.tv_sec < date ? date - now.tv_sec : now.tv_sec - date;
132 for (i = 0; i < ARRAY_SIZE(reldate); i++) {
133 if (seconds >= reldate[i].value)
134 continue;
136 seconds /= reldate[i].namelen;
137 if (!string_format(buf, "%ld %s%s %s",
138 seconds, reldate[i].name,
139 seconds > 1 ? "s" : "",
140 now.tv_sec >= date ? "ago" : "ahead"))
141 break;
142 return buf;
143 }
144 }
146 if (date == DATE_LOCAL) {
147 time_t date = time->sec + time->tz;
148 localtime_r(&date, &tm);
149 }
150 else {
151 gmtime_r(&time->sec, &tm);
152 }
153 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
154 }
157 #define AUTHOR_VALUES \
158 AUTHOR_(NO), \
159 AUTHOR_(FULL), \
160 AUTHOR_(ABBREVIATED)
162 enum author {
163 #define AUTHOR_(name) AUTHOR_##name
164 AUTHOR_VALUES,
165 #undef AUTHOR_
166 AUTHOR_DEFAULT = AUTHOR_FULL
167 };
169 static const struct enum_map author_map[] = {
170 #define AUTHOR_(name) ENUM_MAP(#name, AUTHOR_##name)
171 AUTHOR_VALUES
172 #undef AUTHOR_
173 };
175 static const char *
176 get_author_initials(const char *author)
177 {
178 static char initials[AUTHOR_COLS * 6 + 1];
179 size_t pos = 0;
180 const char *end = strchr(author, '\0');
182 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@' || (c) == '-')
184 memset(initials, 0, sizeof(initials));
185 while (author < end) {
186 unsigned char bytes;
187 size_t i;
189 while (is_initial_sep(*author))
190 author++;
192 bytes = utf8_char_length(author, end);
193 if (bytes < sizeof(initials) - 1 - pos) {
194 while (bytes--) {
195 initials[pos++] = *author++;
196 }
197 }
199 for (i = pos; author < end && !is_initial_sep(*author); author++) {
200 if (i < sizeof(initials) - 1)
201 initials[i++] = *author;
202 }
204 initials[i++] = 0;
205 }
207 return initials;
208 }
211 /*
212 * User requests
213 */
215 #define REQ_INFO \
216 /* XXX: Keep the view request first and in sync with views[]. */ \
217 REQ_GROUP("View switching") \
218 REQ_(VIEW_MAIN, "Show main view"), \
219 REQ_(VIEW_DIFF, "Show diff view"), \
220 REQ_(VIEW_LOG, "Show log view"), \
221 REQ_(VIEW_TREE, "Show tree view"), \
222 REQ_(VIEW_BLOB, "Show blob view"), \
223 REQ_(VIEW_BLAME, "Show blame view"), \
224 REQ_(VIEW_BRANCH, "Show branch view"), \
225 REQ_(VIEW_HELP, "Show help page"), \
226 REQ_(VIEW_PAGER, "Show pager view"), \
227 REQ_(VIEW_STATUS, "Show status view"), \
228 REQ_(VIEW_STAGE, "Show stage view"), \
229 \
230 REQ_GROUP("View manipulation") \
231 REQ_(ENTER, "Enter current line and scroll"), \
232 REQ_(NEXT, "Move to next"), \
233 REQ_(PREVIOUS, "Move to previous"), \
234 REQ_(PARENT, "Move to parent"), \
235 REQ_(VIEW_NEXT, "Move focus to next view"), \
236 REQ_(REFRESH, "Reload and refresh"), \
237 REQ_(MAXIMIZE, "Maximize the current view"), \
238 REQ_(VIEW_CLOSE, "Close the current view"), \
239 REQ_(QUIT, "Close all views and quit"), \
240 \
241 REQ_GROUP("View specific requests") \
242 REQ_(STATUS_UPDATE, "Update file status"), \
243 REQ_(STATUS_REVERT, "Revert file changes"), \
244 REQ_(STATUS_MERGE, "Merge file using external tool"), \
245 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
246 \
247 REQ_GROUP("Cursor navigation") \
248 REQ_(MOVE_UP, "Move cursor one line up"), \
249 REQ_(MOVE_DOWN, "Move cursor one line down"), \
250 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
251 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
252 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
253 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
254 \
255 REQ_GROUP("Scrolling") \
256 REQ_(SCROLL_FIRST_COL, "Scroll to the first line columns"), \
257 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
258 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
259 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
260 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
261 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
262 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
263 \
264 REQ_GROUP("Searching") \
265 REQ_(SEARCH, "Search the view"), \
266 REQ_(SEARCH_BACK, "Search backwards in the view"), \
267 REQ_(FIND_NEXT, "Find next search match"), \
268 REQ_(FIND_PREV, "Find previous search match"), \
269 \
270 REQ_GROUP("Option manipulation") \
271 REQ_(OPTIONS, "Open option menu"), \
272 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
273 REQ_(TOGGLE_DATE, "Toggle date display"), \
274 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
275 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
276 REQ_(TOGGLE_GRAPHIC, "Toggle (line) graphics mode"), \
277 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
278 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
279 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
280 \
281 REQ_GROUP("Misc") \
282 REQ_(PROMPT, "Bring up the prompt"), \
283 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
284 REQ_(SHOW_VERSION, "Show version information"), \
285 REQ_(STOP_LOADING, "Stop all loading views"), \
286 REQ_(EDIT, "Open in editor"), \
287 REQ_(NONE, "Do nothing")
290 /* User action requests. */
291 enum request {
292 #define REQ_GROUP(help)
293 #define REQ_(req, help) REQ_##req
295 /* Offset all requests to avoid conflicts with ncurses getch values. */
296 REQ_UNKNOWN = KEY_MAX + 1,
297 REQ_OFFSET,
298 REQ_INFO
300 #undef REQ_GROUP
301 #undef REQ_
302 };
304 struct request_info {
305 enum request request;
306 const char *name;
307 int namelen;
308 const char *help;
309 };
311 static const struct request_info req_info[] = {
312 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
313 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
314 REQ_INFO
315 #undef REQ_GROUP
316 #undef REQ_
317 };
319 static enum request
320 get_request(const char *name)
321 {
322 int namelen = strlen(name);
323 int i;
325 for (i = 0; i < ARRAY_SIZE(req_info); i++)
326 if (enum_equals(req_info[i], name, namelen))
327 return req_info[i].request;
329 return REQ_UNKNOWN;
330 }
333 /*
334 * Options
335 */
337 /* Option and state variables. */
338 static enum graphic opt_line_graphics = GRAPHIC_DEFAULT;
339 static enum date opt_date = DATE_DEFAULT;
340 static enum author opt_author = AUTHOR_DEFAULT;
341 static bool opt_rev_graph = TRUE;
342 static bool opt_line_number = FALSE;
343 static bool opt_show_refs = TRUE;
344 static bool opt_untracked_dirs_content = TRUE;
345 static int opt_num_interval = 5;
346 static double opt_hscroll = 0.50;
347 static double opt_scale_split_view = 2.0 / 3.0;
348 static int opt_tab_size = 8;
349 static int opt_author_cols = AUTHOR_COLS;
350 static char opt_path[SIZEOF_STR] = "";
351 static char opt_file[SIZEOF_STR] = "";
352 static char opt_ref[SIZEOF_REF] = "";
353 static char opt_head[SIZEOF_REF] = "";
354 static char opt_remote[SIZEOF_REF] = "";
355 static char opt_encoding[20] = "UTF-8";
356 static iconv_t opt_iconv_in = ICONV_NONE;
357 static iconv_t opt_iconv_out = ICONV_NONE;
358 static char opt_search[SIZEOF_STR] = "";
359 static char opt_cdup[SIZEOF_STR] = "";
360 static char opt_prefix[SIZEOF_STR] = "";
361 static char opt_git_dir[SIZEOF_STR] = "";
362 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
363 static char opt_editor[SIZEOF_STR] = "";
364 static FILE *opt_tty = NULL;
365 static const char **opt_diff_argv = NULL;
366 static const char **opt_rev_argv = NULL;
367 static const char **opt_file_argv = NULL;
368 static const char **opt_blame_argv = NULL;
370 #define is_initial_commit() (!get_ref_head())
371 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strcmp(rev, get_ref_head()->id)))
374 /*
375 * Line-oriented content detection.
376 */
378 #define LINE_INFO \
379 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
380 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
381 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
382 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
383 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
384 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
385 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
386 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
387 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
388 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
389 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
390 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
391 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
392 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
393 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
394 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
395 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
396 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
397 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
398 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
399 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
400 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
401 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
402 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
403 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
404 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
405 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
406 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
407 LINE(TESTED, " Tested-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
408 LINE(REVIEWED, " Reviewed-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
409 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
410 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
411 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
412 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
413 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
414 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
415 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
416 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
417 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
418 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
419 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
420 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
421 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
422 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
423 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
424 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
425 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
426 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
427 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
428 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
429 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
430 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
431 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
432 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
433 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
434 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
435 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
436 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
437 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
438 LINE(GRAPH_LINE_0, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
439 LINE(GRAPH_LINE_1, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
440 LINE(GRAPH_LINE_2, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
441 LINE(GRAPH_LINE_3, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
442 LINE(GRAPH_LINE_4, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
443 LINE(GRAPH_LINE_5, "", COLOR_WHITE, COLOR_DEFAULT, 0), \
444 LINE(GRAPH_LINE_6, "", COLOR_RED, COLOR_DEFAULT, 0), \
445 LINE(GRAPH_COMMIT, "", COLOR_BLUE, COLOR_DEFAULT, 0)
447 enum line_type {
448 #define LINE(type, line, fg, bg, attr) \
449 LINE_##type
450 LINE_INFO,
451 LINE_NONE
452 #undef LINE
453 };
455 struct line_info {
456 const char *name; /* Option name. */
457 int namelen; /* Size of option name. */
458 const char *line; /* The start of line to match. */
459 int linelen; /* Size of string to match. */
460 int fg, bg, attr; /* Color and text attributes for the lines. */
461 };
463 static struct line_info line_info[] = {
464 #define LINE(type, line, fg, bg, attr) \
465 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
466 LINE_INFO
467 #undef LINE
468 };
470 static enum line_type
471 get_line_type(const char *line)
472 {
473 int linelen = strlen(line);
474 enum line_type type;
476 for (type = 0; type < ARRAY_SIZE(line_info); type++)
477 /* Case insensitive search matches Signed-off-by lines better. */
478 if (linelen >= line_info[type].linelen &&
479 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
480 return type;
482 return LINE_DEFAULT;
483 }
485 static inline int
486 get_line_attr(enum line_type type)
487 {
488 assert(type < ARRAY_SIZE(line_info));
489 return COLOR_PAIR(type) | line_info[type].attr;
490 }
492 static struct line_info *
493 get_line_info(const char *name)
494 {
495 size_t namelen = strlen(name);
496 enum line_type type;
498 for (type = 0; type < ARRAY_SIZE(line_info); type++)
499 if (enum_equals(line_info[type], name, namelen))
500 return &line_info[type];
502 return NULL;
503 }
505 static void
506 init_colors(void)
507 {
508 int default_bg = line_info[LINE_DEFAULT].bg;
509 int default_fg = line_info[LINE_DEFAULT].fg;
510 enum line_type type;
512 start_color();
514 if (assume_default_colors(default_fg, default_bg) == ERR) {
515 default_bg = COLOR_BLACK;
516 default_fg = COLOR_WHITE;
517 }
519 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
520 struct line_info *info = &line_info[type];
521 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
522 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
524 init_pair(type, fg, bg);
525 }
526 }
528 struct line {
529 enum line_type type;
531 /* State flags */
532 unsigned int selected:1;
533 unsigned int dirty:1;
534 unsigned int cleareol:1;
535 unsigned int other:16;
537 void *data; /* User data */
538 };
541 /*
542 * Keys
543 */
545 struct keybinding {
546 int alias;
547 enum request request;
548 };
550 static struct keybinding default_keybindings[] = {
551 /* View switching */
552 { 'm', REQ_VIEW_MAIN },
553 { 'd', REQ_VIEW_DIFF },
554 { 'l', REQ_VIEW_LOG },
555 { 't', REQ_VIEW_TREE },
556 { 'f', REQ_VIEW_BLOB },
557 { 'B', REQ_VIEW_BLAME },
558 { 'H', REQ_VIEW_BRANCH },
559 { 'p', REQ_VIEW_PAGER },
560 { 'h', REQ_VIEW_HELP },
561 { 'S', REQ_VIEW_STATUS },
562 { 'c', REQ_VIEW_STAGE },
564 /* View manipulation */
565 { 'q', REQ_VIEW_CLOSE },
566 { KEY_TAB, REQ_VIEW_NEXT },
567 { KEY_RETURN, REQ_ENTER },
568 { KEY_UP, REQ_PREVIOUS },
569 { KEY_CTL('P'), REQ_PREVIOUS },
570 { KEY_DOWN, REQ_NEXT },
571 { KEY_CTL('N'), REQ_NEXT },
572 { 'R', REQ_REFRESH },
573 { KEY_F(5), REQ_REFRESH },
574 { 'O', REQ_MAXIMIZE },
576 /* Cursor navigation */
577 { 'k', REQ_MOVE_UP },
578 { 'j', REQ_MOVE_DOWN },
579 { KEY_HOME, REQ_MOVE_FIRST_LINE },
580 { KEY_END, REQ_MOVE_LAST_LINE },
581 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
582 { KEY_CTL('D'), REQ_MOVE_PAGE_DOWN },
583 { ' ', REQ_MOVE_PAGE_DOWN },
584 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
585 { KEY_CTL('U'), REQ_MOVE_PAGE_UP },
586 { 'b', REQ_MOVE_PAGE_UP },
587 { '-', REQ_MOVE_PAGE_UP },
589 /* Scrolling */
590 { '|', REQ_SCROLL_FIRST_COL },
591 { KEY_LEFT, REQ_SCROLL_LEFT },
592 { KEY_RIGHT, REQ_SCROLL_RIGHT },
593 { KEY_IC, REQ_SCROLL_LINE_UP },
594 { KEY_CTL('Y'), REQ_SCROLL_LINE_UP },
595 { KEY_DC, REQ_SCROLL_LINE_DOWN },
596 { KEY_CTL('E'), REQ_SCROLL_LINE_DOWN },
597 { 'w', REQ_SCROLL_PAGE_UP },
598 { 's', REQ_SCROLL_PAGE_DOWN },
600 /* Searching */
601 { '/', REQ_SEARCH },
602 { '?', REQ_SEARCH_BACK },
603 { 'n', REQ_FIND_NEXT },
604 { 'N', REQ_FIND_PREV },
606 /* Misc */
607 { 'Q', REQ_QUIT },
608 { 'z', REQ_STOP_LOADING },
609 { 'v', REQ_SHOW_VERSION },
610 { 'r', REQ_SCREEN_REDRAW },
611 { KEY_CTL('L'), REQ_SCREEN_REDRAW },
612 { 'o', REQ_OPTIONS },
613 { '.', REQ_TOGGLE_LINENO },
614 { 'D', REQ_TOGGLE_DATE },
615 { 'A', REQ_TOGGLE_AUTHOR },
616 { 'g', REQ_TOGGLE_REV_GRAPH },
617 { '~', REQ_TOGGLE_GRAPHIC },
618 { 'F', REQ_TOGGLE_REFS },
619 { 'I', REQ_TOGGLE_SORT_ORDER },
620 { 'i', REQ_TOGGLE_SORT_FIELD },
621 { ':', REQ_PROMPT },
622 { 'u', REQ_STATUS_UPDATE },
623 { '!', REQ_STATUS_REVERT },
624 { 'M', REQ_STATUS_MERGE },
625 { '@', REQ_STAGE_NEXT },
626 { ',', REQ_PARENT },
627 { 'e', REQ_EDIT },
628 };
630 #define KEYMAP_INFO \
631 KEYMAP_(GENERIC), \
632 KEYMAP_(MAIN), \
633 KEYMAP_(DIFF), \
634 KEYMAP_(LOG), \
635 KEYMAP_(TREE), \
636 KEYMAP_(BLOB), \
637 KEYMAP_(BLAME), \
638 KEYMAP_(BRANCH), \
639 KEYMAP_(PAGER), \
640 KEYMAP_(HELP), \
641 KEYMAP_(STATUS), \
642 KEYMAP_(STAGE)
644 enum keymap {
645 #define KEYMAP_(name) KEYMAP_##name
646 KEYMAP_INFO
647 #undef KEYMAP_
648 };
650 static const struct enum_map keymap_table[] = {
651 #define KEYMAP_(name) ENUM_MAP(#name, KEYMAP_##name)
652 KEYMAP_INFO
653 #undef KEYMAP_
654 };
656 #define set_keymap(map, name) map_enum(map, keymap_table, name)
658 struct keybinding_table {
659 struct keybinding *data;
660 size_t size;
661 };
663 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
665 static void
666 add_keybinding(enum keymap keymap, enum request request, int key)
667 {
668 struct keybinding_table *table = &keybindings[keymap];
669 size_t i;
671 for (i = 0; i < keybindings[keymap].size; i++) {
672 if (keybindings[keymap].data[i].alias == key) {
673 keybindings[keymap].data[i].request = request;
674 return;
675 }
676 }
678 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
679 if (!table->data)
680 die("Failed to allocate keybinding");
681 table->data[table->size].alias = key;
682 table->data[table->size++].request = request;
684 if (request == REQ_NONE && keymap == KEYMAP_GENERIC) {
685 int i;
687 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
688 if (default_keybindings[i].alias == key)
689 default_keybindings[i].request = REQ_NONE;
690 }
691 }
693 /* Looks for a key binding first in the given map, then in the generic map, and
694 * lastly in the default keybindings. */
695 static enum request
696 get_keybinding(enum keymap keymap, int key)
697 {
698 size_t i;
700 for (i = 0; i < keybindings[keymap].size; i++)
701 if (keybindings[keymap].data[i].alias == key)
702 return keybindings[keymap].data[i].request;
704 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
705 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
706 return keybindings[KEYMAP_GENERIC].data[i].request;
708 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
709 if (default_keybindings[i].alias == key)
710 return default_keybindings[i].request;
712 return (enum request) key;
713 }
716 struct key {
717 const char *name;
718 int value;
719 };
721 static const struct key key_table[] = {
722 { "Enter", KEY_RETURN },
723 { "Space", ' ' },
724 { "Backspace", KEY_BACKSPACE },
725 { "Tab", KEY_TAB },
726 { "Escape", KEY_ESC },
727 { "Left", KEY_LEFT },
728 { "Right", KEY_RIGHT },
729 { "Up", KEY_UP },
730 { "Down", KEY_DOWN },
731 { "Insert", KEY_IC },
732 { "Delete", KEY_DC },
733 { "Hash", '#' },
734 { "Home", KEY_HOME },
735 { "End", KEY_END },
736 { "PageUp", KEY_PPAGE },
737 { "PageDown", KEY_NPAGE },
738 { "F1", KEY_F(1) },
739 { "F2", KEY_F(2) },
740 { "F3", KEY_F(3) },
741 { "F4", KEY_F(4) },
742 { "F5", KEY_F(5) },
743 { "F6", KEY_F(6) },
744 { "F7", KEY_F(7) },
745 { "F8", KEY_F(8) },
746 { "F9", KEY_F(9) },
747 { "F10", KEY_F(10) },
748 { "F11", KEY_F(11) },
749 { "F12", KEY_F(12) },
750 };
752 static int
753 get_key_value(const char *name)
754 {
755 int i;
757 for (i = 0; i < ARRAY_SIZE(key_table); i++)
758 if (!strcasecmp(key_table[i].name, name))
759 return key_table[i].value;
761 if (strlen(name) == 2 && name[0] == '^' && isprint(*name))
762 return (int)name[1] & 0x1f;
763 if (strlen(name) == 1 && isprint(*name))
764 return (int) *name;
765 return ERR;
766 }
768 static const char *
769 get_key_name(int key_value)
770 {
771 static char key_char[] = "'X'\0";
772 const char *seq = NULL;
773 int key;
775 for (key = 0; key < ARRAY_SIZE(key_table); key++)
776 if (key_table[key].value == key_value)
777 seq = key_table[key].name;
779 if (seq == NULL && key_value < 0x7f) {
780 char *s = key_char + 1;
782 if (key_value >= 0x20) {
783 *s++ = key_value;
784 } else {
785 *s++ = '^';
786 *s++ = 0x40 | (key_value & 0x1f);
787 }
788 *s++ = '\'';
789 *s++ = '\0';
790 seq = key_char;
791 }
793 return seq ? seq : "(no key)";
794 }
796 static bool
797 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
798 {
799 const char *sep = *pos > 0 ? ", " : "";
800 const char *keyname = get_key_name(keybinding->alias);
802 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
803 }
805 static bool
806 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
807 enum keymap keymap, bool all)
808 {
809 int i;
811 for (i = 0; i < keybindings[keymap].size; i++) {
812 if (keybindings[keymap].data[i].request == request) {
813 if (!append_key(buf, pos, &keybindings[keymap].data[i]))
814 return FALSE;
815 if (!all)
816 break;
817 }
818 }
820 return TRUE;
821 }
823 #define get_key(keymap, request) get_keys(keymap, request, FALSE)
825 static const char *
826 get_keys(enum keymap keymap, enum request request, bool all)
827 {
828 static char buf[BUFSIZ];
829 size_t pos = 0;
830 int i;
832 buf[pos] = 0;
834 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
835 return "Too many keybindings!";
836 if (pos > 0 && !all)
837 return buf;
839 if (keymap != KEYMAP_GENERIC) {
840 /* Only the generic keymap includes the default keybindings when
841 * listing all keys. */
842 if (all)
843 return buf;
845 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
846 return "Too many keybindings!";
847 if (pos)
848 return buf;
849 }
851 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
852 if (default_keybindings[i].request == request) {
853 if (!append_key(buf, &pos, &default_keybindings[i]))
854 return "Too many keybindings!";
855 if (!all)
856 return buf;
857 }
858 }
860 return buf;
861 }
863 struct run_request {
864 enum keymap keymap;
865 int key;
866 const char **argv;
867 };
869 static struct run_request *run_request;
870 static size_t run_requests;
872 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
874 static enum request
875 add_run_request(enum keymap keymap, int key, const char **argv)
876 {
877 struct run_request *req;
879 if (!realloc_run_requests(&run_request, run_requests, 1))
880 return REQ_NONE;
882 req = &run_request[run_requests];
883 req->keymap = keymap;
884 req->key = key;
885 req->argv = NULL;
887 if (!argv_copy(&req->argv, argv))
888 return REQ_NONE;
890 return REQ_NONE + ++run_requests;
891 }
893 static struct run_request *
894 get_run_request(enum request request)
895 {
896 if (request <= REQ_NONE)
897 return NULL;
898 return &run_request[request - REQ_NONE - 1];
899 }
901 static void
902 add_builtin_run_requests(void)
903 {
904 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
905 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
906 const char *commit[] = { "git", "commit", NULL };
907 const char *gc[] = { "git", "gc", NULL };
908 struct run_request reqs[] = {
909 { KEYMAP_MAIN, 'C', cherry_pick },
910 { KEYMAP_STATUS, 'C', commit },
911 { KEYMAP_BRANCH, 'C', checkout },
912 { KEYMAP_GENERIC, 'G', gc },
913 };
914 int i;
916 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
917 enum request req = get_keybinding(reqs[i].keymap, reqs[i].key);
919 if (req != reqs[i].key)
920 continue;
921 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argv);
922 if (req != REQ_NONE)
923 add_keybinding(reqs[i].keymap, req, reqs[i].key);
924 }
925 }
927 /*
928 * User config file handling.
929 */
931 #define OPT_ERR_INFO \
932 OPT_ERR_(INTEGER_VALUE_OUT_OF_BOUND, "Integer value out of bound"), \
933 OPT_ERR_(INVALID_STEP_VALUE, "Invalid step value"), \
934 OPT_ERR_(NO_OPTION_VALUE, "No option value"), \
935 OPT_ERR_(NO_VALUE_ASSIGNED, "No value assigned"), \
936 OPT_ERR_(OBSOLETE_REQUEST_NAME, "Obsolete request name"), \
937 OPT_ERR_(OUT_OF_MEMORY, "Out of memory"), \
938 OPT_ERR_(TOO_MANY_OPTION_ARGUMENTS, "Too many option arguments"), \
939 OPT_ERR_(UNKNOWN_ATTRIBUTE, "Unknown attribute"), \
940 OPT_ERR_(UNKNOWN_COLOR, "Unknown color"), \
941 OPT_ERR_(UNKNOWN_COLOR_NAME, "Unknown color name"), \
942 OPT_ERR_(UNKNOWN_KEY, "Unknown key"), \
943 OPT_ERR_(UNKNOWN_KEY_MAP, "Unknown key map"), \
944 OPT_ERR_(UNKNOWN_OPTION_COMMAND, "Unknown option command"), \
945 OPT_ERR_(UNKNOWN_REQUEST_NAME, "Unknown request name"), \
946 OPT_ERR_(UNKNOWN_VARIABLE_NAME, "Unknown variable name"), \
947 OPT_ERR_(UNMATCHED_QUOTATION, "Unmatched quotation"), \
948 OPT_ERR_(WRONG_NUMBER_OF_ARGUMENTS, "Wrong number of arguments"),
950 enum option_code {
951 #define OPT_ERR_(name, msg) OPT_ERR_ ## name
952 OPT_ERR_INFO
953 #undef OPT_ERR_
954 OPT_OK
955 };
957 static const char *option_errors[] = {
958 #define OPT_ERR_(name, msg) msg
959 OPT_ERR_INFO
960 #undef OPT_ERR_
961 };
963 static const struct enum_map color_map[] = {
964 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
965 COLOR_MAP(DEFAULT),
966 COLOR_MAP(BLACK),
967 COLOR_MAP(BLUE),
968 COLOR_MAP(CYAN),
969 COLOR_MAP(GREEN),
970 COLOR_MAP(MAGENTA),
971 COLOR_MAP(RED),
972 COLOR_MAP(WHITE),
973 COLOR_MAP(YELLOW),
974 };
976 static const struct enum_map attr_map[] = {
977 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
978 ATTR_MAP(NORMAL),
979 ATTR_MAP(BLINK),
980 ATTR_MAP(BOLD),
981 ATTR_MAP(DIM),
982 ATTR_MAP(REVERSE),
983 ATTR_MAP(STANDOUT),
984 ATTR_MAP(UNDERLINE),
985 };
987 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
989 static enum option_code
990 parse_step(double *opt, const char *arg)
991 {
992 *opt = atoi(arg);
993 if (!strchr(arg, '%'))
994 return OPT_OK;
996 /* "Shift down" so 100% and 1 does not conflict. */
997 *opt = (*opt - 1) / 100;
998 if (*opt >= 1.0) {
999 *opt = 0.99;
1000 return OPT_ERR_INVALID_STEP_VALUE;
1001 }
1002 if (*opt < 0.0) {
1003 *opt = 1;
1004 return OPT_ERR_INVALID_STEP_VALUE;
1005 }
1006 return OPT_OK;
1007 }
1009 static enum option_code
1010 parse_int(int *opt, const char *arg, int min, int max)
1011 {
1012 int value = atoi(arg);
1014 if (min <= value && value <= max) {
1015 *opt = value;
1016 return OPT_OK;
1017 }
1019 return OPT_ERR_INTEGER_VALUE_OUT_OF_BOUND;
1020 }
1022 static bool
1023 set_color(int *color, const char *name)
1024 {
1025 if (map_enum(color, color_map, name))
1026 return TRUE;
1027 if (!prefixcmp(name, "color"))
1028 return parse_int(color, name + 5, 0, 255) == OK;
1029 return FALSE;
1030 }
1032 /* Wants: object fgcolor bgcolor [attribute] */
1033 static enum option_code
1034 option_color_command(int argc, const char *argv[])
1035 {
1036 struct line_info *info;
1038 if (argc < 3)
1039 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1041 info = get_line_info(argv[0]);
1042 if (!info) {
1043 static const struct enum_map obsolete[] = {
1044 ENUM_MAP("main-delim", LINE_DELIMITER),
1045 ENUM_MAP("main-date", LINE_DATE),
1046 ENUM_MAP("main-author", LINE_AUTHOR),
1047 };
1048 int index;
1050 if (!map_enum(&index, obsolete, argv[0]))
1051 return OPT_ERR_UNKNOWN_COLOR_NAME;
1052 info = &line_info[index];
1053 }
1055 if (!set_color(&info->fg, argv[1]) ||
1056 !set_color(&info->bg, argv[2]))
1057 return OPT_ERR_UNKNOWN_COLOR;
1059 info->attr = 0;
1060 while (argc-- > 3) {
1061 int attr;
1063 if (!set_attribute(&attr, argv[argc]))
1064 return OPT_ERR_UNKNOWN_ATTRIBUTE;
1065 info->attr |= attr;
1066 }
1068 return OPT_OK;
1069 }
1071 static enum option_code
1072 parse_bool(bool *opt, const char *arg)
1073 {
1074 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1075 ? TRUE : FALSE;
1076 return OPT_OK;
1077 }
1079 static enum option_code
1080 parse_enum_do(unsigned int *opt, const char *arg,
1081 const struct enum_map *map, size_t map_size)
1082 {
1083 bool is_true;
1085 assert(map_size > 1);
1087 if (map_enum_do(map, map_size, (int *) opt, arg))
1088 return OPT_OK;
1090 parse_bool(&is_true, arg);
1091 *opt = is_true ? map[1].value : map[0].value;
1092 return OPT_OK;
1093 }
1095 #define parse_enum(opt, arg, map) \
1096 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1098 static enum option_code
1099 parse_string(char *opt, const char *arg, size_t optsize)
1100 {
1101 int arglen = strlen(arg);
1103 switch (arg[0]) {
1104 case '\"':
1105 case '\'':
1106 if (arglen == 1 || arg[arglen - 1] != arg[0])
1107 return OPT_ERR_UNMATCHED_QUOTATION;
1108 arg += 1; arglen -= 2;
1109 default:
1110 string_ncopy_do(opt, optsize, arg, arglen);
1111 return OPT_OK;
1112 }
1113 }
1115 static enum option_code
1116 parse_args(const char ***args, const char *argv[])
1117 {
1118 if (*args == NULL && !argv_copy(args, argv))
1119 return OPT_ERR_OUT_OF_MEMORY;
1120 return OPT_OK;
1121 }
1123 /* Wants: name = value */
1124 static enum option_code
1125 option_set_command(int argc, const char *argv[])
1126 {
1127 if (argc < 3)
1128 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1130 if (strcmp(argv[1], "="))
1131 return OPT_ERR_NO_VALUE_ASSIGNED;
1133 if (!strcmp(argv[0], "blame-options"))
1134 return parse_args(&opt_blame_argv, argv + 2);
1136 if (argc != 3)
1137 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1139 if (!strcmp(argv[0], "show-author"))
1140 return parse_enum(&opt_author, argv[2], author_map);
1142 if (!strcmp(argv[0], "show-date"))
1143 return parse_enum(&opt_date, argv[2], date_map);
1145 if (!strcmp(argv[0], "show-rev-graph"))
1146 return parse_bool(&opt_rev_graph, argv[2]);
1148 if (!strcmp(argv[0], "show-refs"))
1149 return parse_bool(&opt_show_refs, argv[2]);
1151 if (!strcmp(argv[0], "show-line-numbers"))
1152 return parse_bool(&opt_line_number, argv[2]);
1154 if (!strcmp(argv[0], "line-graphics"))
1155 return parse_enum(&opt_line_graphics, argv[2], graphic_map);
1157 if (!strcmp(argv[0], "line-number-interval"))
1158 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1160 if (!strcmp(argv[0], "author-width"))
1161 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1163 if (!strcmp(argv[0], "horizontal-scroll"))
1164 return parse_step(&opt_hscroll, argv[2]);
1166 if (!strcmp(argv[0], "split-view-height"))
1167 return parse_step(&opt_scale_split_view, argv[2]);
1169 if (!strcmp(argv[0], "tab-size"))
1170 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1172 if (!strcmp(argv[0], "commit-encoding"))
1173 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1175 if (!strcmp(argv[0], "status-untracked-dirs"))
1176 return parse_bool(&opt_untracked_dirs_content, argv[2]);
1178 return OPT_ERR_UNKNOWN_VARIABLE_NAME;
1179 }
1181 /* Wants: mode request key */
1182 static enum option_code
1183 option_bind_command(int argc, const char *argv[])
1184 {
1185 enum request request;
1186 int keymap = -1;
1187 int key;
1189 if (argc < 3)
1190 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1192 if (!set_keymap(&keymap, argv[0]))
1193 return OPT_ERR_UNKNOWN_KEY_MAP;
1195 key = get_key_value(argv[1]);
1196 if (key == ERR)
1197 return OPT_ERR_UNKNOWN_KEY;
1199 request = get_request(argv[2]);
1200 if (request == REQ_UNKNOWN) {
1201 static const struct enum_map obsolete[] = {
1202 ENUM_MAP("cherry-pick", REQ_NONE),
1203 ENUM_MAP("screen-resize", REQ_NONE),
1204 ENUM_MAP("tree-parent", REQ_PARENT),
1205 };
1206 int alias;
1208 if (map_enum(&alias, obsolete, argv[2])) {
1209 if (alias != REQ_NONE)
1210 add_keybinding(keymap, alias, key);
1211 return OPT_ERR_OBSOLETE_REQUEST_NAME;
1212 }
1213 }
1214 if (request == REQ_UNKNOWN && *argv[2]++ == '!')
1215 request = add_run_request(keymap, key, argv + 2);
1216 if (request == REQ_UNKNOWN)
1217 return OPT_ERR_UNKNOWN_REQUEST_NAME;
1219 add_keybinding(keymap, request, key);
1221 return OPT_OK;
1222 }
1224 static enum option_code
1225 set_option(const char *opt, char *value)
1226 {
1227 const char *argv[SIZEOF_ARG];
1228 int argc = 0;
1230 if (!argv_from_string(argv, &argc, value))
1231 return OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
1233 if (!strcmp(opt, "color"))
1234 return option_color_command(argc, argv);
1236 if (!strcmp(opt, "set"))
1237 return option_set_command(argc, argv);
1239 if (!strcmp(opt, "bind"))
1240 return option_bind_command(argc, argv);
1242 return OPT_ERR_UNKNOWN_OPTION_COMMAND;
1243 }
1245 struct config_state {
1246 int lineno;
1247 bool errors;
1248 };
1250 static int
1251 read_option(char *opt, size_t optlen, char *value, size_t valuelen, void *data)
1252 {
1253 struct config_state *config = data;
1254 enum option_code status = OPT_ERR_NO_OPTION_VALUE;
1256 config->lineno++;
1258 /* Check for comment markers, since read_properties() will
1259 * only ensure opt and value are split at first " \t". */
1260 optlen = strcspn(opt, "#");
1261 if (optlen == 0)
1262 return OK;
1264 if (opt[optlen] == 0) {
1265 /* Look for comment endings in the value. */
1266 size_t len = strcspn(value, "#");
1268 if (len < valuelen) {
1269 valuelen = len;
1270 value[valuelen] = 0;
1271 }
1273 status = set_option(opt, value);
1274 }
1276 if (status != OPT_OK) {
1277 warn("Error on line %d, near '%.*s': %s",
1278 config->lineno, (int) optlen, opt, option_errors[status]);
1279 config->errors = TRUE;
1280 }
1282 /* Always keep going if errors are encountered. */
1283 return OK;
1284 }
1286 static void
1287 load_option_file(const char *path)
1288 {
1289 struct config_state config = { 0, FALSE };
1290 struct io io;
1292 /* It's OK that the file doesn't exist. */
1293 if (!io_open(&io, "%s", path))
1294 return;
1296 if (io_load(&io, " \t", read_option, &config) == ERR ||
1297 config.errors == TRUE)
1298 warn("Errors while loading %s.", path);
1299 }
1301 static int
1302 load_options(void)
1303 {
1304 const char *home = getenv("HOME");
1305 const char *tigrc_user = getenv("TIGRC_USER");
1306 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1307 const char *tig_diff_opts = getenv("TIG_DIFF_OPTS");
1308 char buf[SIZEOF_STR];
1310 if (!tigrc_system)
1311 tigrc_system = SYSCONFDIR "/tigrc";
1312 load_option_file(tigrc_system);
1314 if (!tigrc_user) {
1315 if (!home || !string_format(buf, "%s/.tigrc", home))
1316 return ERR;
1317 tigrc_user = buf;
1318 }
1319 load_option_file(tigrc_user);
1321 /* Add _after_ loading config files to avoid adding run requests
1322 * that conflict with keybindings. */
1323 add_builtin_run_requests();
1325 if (!opt_diff_argv && tig_diff_opts && *tig_diff_opts) {
1326 static const char *diff_opts[SIZEOF_ARG] = { NULL };
1327 int argc = 0;
1329 if (!string_format(buf, "%s", tig_diff_opts) ||
1330 !argv_from_string(diff_opts, &argc, buf))
1331 die("TIG_DIFF_OPTS contains too many arguments");
1332 else if (!argv_copy(&opt_diff_argv, diff_opts))
1333 die("Failed to format TIG_DIFF_OPTS arguments");
1334 }
1336 return OK;
1337 }
1340 /*
1341 * The viewer
1342 */
1344 struct view;
1345 struct view_ops;
1347 /* The display array of active views and the index of the current view. */
1348 static struct view *display[2];
1349 static WINDOW *display_win[2];
1350 static WINDOW *display_title[2];
1351 static unsigned int current_view;
1353 #define foreach_displayed_view(view, i) \
1354 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1356 #define displayed_views() (display[1] != NULL ? 2 : 1)
1358 /* Current head and commit ID */
1359 static char ref_blob[SIZEOF_REF] = "";
1360 static char ref_commit[SIZEOF_REF] = "HEAD";
1361 static char ref_head[SIZEOF_REF] = "HEAD";
1362 static char ref_branch[SIZEOF_REF] = "";
1364 enum view_type {
1365 VIEW_MAIN,
1366 VIEW_DIFF,
1367 VIEW_LOG,
1368 VIEW_TREE,
1369 VIEW_BLOB,
1370 VIEW_BLAME,
1371 VIEW_BRANCH,
1372 VIEW_HELP,
1373 VIEW_PAGER,
1374 VIEW_STATUS,
1375 VIEW_STAGE,
1376 };
1378 struct view {
1379 enum view_type type; /* View type */
1380 const char *name; /* View name */
1381 const char *id; /* Points to either of ref_{head,commit,blob} */
1383 struct view_ops *ops; /* View operations */
1385 enum keymap keymap; /* What keymap does this view have */
1386 bool git_dir; /* Whether the view requires a git directory. */
1388 char ref[SIZEOF_REF]; /* Hovered commit reference */
1389 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1391 int height, width; /* The width and height of the main window */
1392 WINDOW *win; /* The main window */
1394 /* Navigation */
1395 unsigned long offset; /* Offset of the window top */
1396 unsigned long yoffset; /* Offset from the window side. */
1397 unsigned long lineno; /* Current line number */
1398 unsigned long p_offset; /* Previous offset of the window top */
1399 unsigned long p_yoffset;/* Previous offset from the window side */
1400 unsigned long p_lineno; /* Previous current line number */
1401 bool p_restore; /* Should the previous position be restored. */
1403 /* Searching */
1404 char grep[SIZEOF_STR]; /* Search string */
1405 regex_t *regex; /* Pre-compiled regexp */
1407 /* If non-NULL, points to the view that opened this view. If this view
1408 * is closed tig will switch back to the parent view. */
1409 struct view *parent;
1410 struct view *prev;
1412 /* Buffering */
1413 size_t lines; /* Total number of lines */
1414 struct line *line; /* Line index */
1415 unsigned int digits; /* Number of digits in the lines member. */
1417 /* Drawing */
1418 struct line *curline; /* Line currently being drawn. */
1419 enum line_type curtype; /* Attribute currently used for drawing. */
1420 unsigned long col; /* Column when drawing. */
1421 bool has_scrolled; /* View was scrolled. */
1423 /* Loading */
1424 const char **argv; /* Shell command arguments. */
1425 const char *dir; /* Directory from which to execute. */
1426 struct io io;
1427 struct io *pipe;
1428 time_t start_time;
1429 time_t update_secs;
1430 };
1432 enum open_flags {
1433 OPEN_DEFAULT = 0, /* Use default view switching. */
1434 OPEN_SPLIT = 1, /* Split current view. */
1435 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1436 OPEN_REFRESH = 16, /* Refresh view using previous command. */
1437 OPEN_PREPARED = 32, /* Open already prepared command. */
1438 OPEN_EXTRA = 64, /* Open extra data from command. */
1439 };
1441 struct view_ops {
1442 /* What type of content being displayed. Used in the title bar. */
1443 const char *type;
1444 /* Open and reads in all view content. */
1445 bool (*open)(struct view *view, enum open_flags flags);
1446 /* Read one line; updates view->line. */
1447 bool (*read)(struct view *view, char *data);
1448 /* Draw one line; @lineno must be < view->height. */
1449 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1450 /* Depending on view handle a special requests. */
1451 enum request (*request)(struct view *view, enum request request, struct line *line);
1452 /* Search for regexp in a line. */
1453 bool (*grep)(struct view *view, struct line *line);
1454 /* Select line */
1455 void (*select)(struct view *view, struct line *line);
1456 };
1458 static struct view_ops blame_ops;
1459 static struct view_ops blob_ops;
1460 static struct view_ops diff_ops;
1461 static struct view_ops help_ops;
1462 static struct view_ops log_ops;
1463 static struct view_ops main_ops;
1464 static struct view_ops pager_ops;
1465 static struct view_ops stage_ops;
1466 static struct view_ops status_ops;
1467 static struct view_ops tree_ops;
1468 static struct view_ops branch_ops;
1470 #define VIEW_STR(type, name, ref, ops, map, git) \
1471 { type, name, ref, ops, map, git }
1473 #define VIEW_(id, name, ops, git, ref) \
1474 VIEW_STR(VIEW_##id, name, ref, ops, KEYMAP_##id, git)
1476 static struct view views[] = {
1477 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1478 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1479 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1480 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1481 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1482 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1483 VIEW_(BRANCH, "branch", &branch_ops, TRUE, ref_head),
1484 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1485 VIEW_(PAGER, "pager", &pager_ops, FALSE, ""),
1486 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1487 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1488 };
1490 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1492 #define foreach_view(view, i) \
1493 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1495 #define view_is_displayed(view) \
1496 (view == display[0] || view == display[1])
1498 static enum request
1499 view_request(struct view *view, enum request request)
1500 {
1501 if (!view || !view->lines)
1502 return request;
1503 return view->ops->request(view, request, &view->line[view->lineno]);
1504 }
1507 /*
1508 * View drawing.
1509 */
1511 static inline void
1512 set_view_attr(struct view *view, enum line_type type)
1513 {
1514 if (!view->curline->selected && view->curtype != type) {
1515 (void) wattrset(view->win, get_line_attr(type));
1516 wchgat(view->win, -1, 0, type, NULL);
1517 view->curtype = type;
1518 }
1519 }
1521 #define VIEW_MAX_LEN(view) ((view)->width + (view)->yoffset - (view)->col)
1523 static bool
1524 draw_chars(struct view *view, enum line_type type, const char *string,
1525 int max_len, bool use_tilde)
1526 {
1527 static char out_buffer[BUFSIZ * 2];
1528 int len = 0;
1529 int col = 0;
1530 int trimmed = FALSE;
1531 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1533 if (max_len <= 0)
1534 return VIEW_MAX_LEN(view) <= 0;
1536 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1538 set_view_attr(view, type);
1539 if (len > 0) {
1540 if (opt_iconv_out != ICONV_NONE) {
1541 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
1542 size_t inlen = len + 1;
1544 char *outbuf = out_buffer;
1545 size_t outlen = sizeof(out_buffer);
1547 size_t ret;
1549 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1550 if (ret != (size_t) -1) {
1551 string = out_buffer;
1552 len = sizeof(out_buffer) - outlen;
1553 }
1554 }
1556 waddnstr(view->win, string, len);
1558 if (trimmed && use_tilde) {
1559 set_view_attr(view, LINE_DELIMITER);
1560 waddch(view->win, '~');
1561 col++;
1562 }
1563 }
1565 view->col += col;
1566 return VIEW_MAX_LEN(view) <= 0;
1567 }
1569 static bool
1570 draw_space(struct view *view, enum line_type type, int max, int spaces)
1571 {
1572 static char space[] = " ";
1574 spaces = MIN(max, spaces);
1576 while (spaces > 0) {
1577 int len = MIN(spaces, sizeof(space) - 1);
1579 if (draw_chars(view, type, space, len, FALSE))
1580 return TRUE;
1581 spaces -= len;
1582 }
1584 return VIEW_MAX_LEN(view) <= 0;
1585 }
1587 static bool
1588 draw_text(struct view *view, enum line_type type, const char *string)
1589 {
1590 char text[SIZEOF_STR];
1592 do {
1593 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1595 if (draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE))
1596 return TRUE;
1597 string += pos;
1598 } while (*string);
1600 return VIEW_MAX_LEN(view) <= 0;
1601 }
1603 static bool
1604 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
1605 {
1606 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1607 int max = VIEW_MAX_LEN(view);
1608 int i;
1610 if (max < size)
1611 size = max;
1613 set_view_attr(view, type);
1614 /* Using waddch() instead of waddnstr() ensures that
1615 * they'll be rendered correctly for the cursor line. */
1616 for (i = skip; i < size; i++)
1617 waddch(view->win, graphic[i]);
1619 view->col += size;
1620 if (separator) {
1621 if (size < max && skip <= size)
1622 waddch(view->win, ' ');
1623 view->col++;
1624 }
1626 return VIEW_MAX_LEN(view) <= 0;
1627 }
1629 static bool
1630 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1631 {
1632 int max = MIN(VIEW_MAX_LEN(view), len);
1633 int col = view->col;
1635 if (!text)
1636 return draw_space(view, type, max, max);
1638 return draw_chars(view, type, text, max - 1, trim)
1639 || draw_space(view, LINE_DEFAULT, max - (view->col - col), max);
1640 }
1642 static bool
1643 draw_date(struct view *view, struct time *time)
1644 {
1645 const char *date = mkdate(time, opt_date);
1646 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
1648 if (opt_date == DATE_NO)
1649 return FALSE;
1651 return draw_field(view, LINE_DATE, date, cols, FALSE);
1652 }
1654 static bool
1655 draw_author(struct view *view, const char *author)
1656 {
1657 bool trim = opt_author_cols == 0 || opt_author_cols > 5;
1658 bool abbreviate = opt_author == AUTHOR_ABBREVIATED || !trim;
1660 if (opt_author == AUTHOR_NO)
1661 return FALSE;
1663 if (abbreviate && author)
1664 author = get_author_initials(author);
1666 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
1667 }
1669 static bool
1670 draw_mode(struct view *view, mode_t mode)
1671 {
1672 const char *str;
1674 if (S_ISDIR(mode))
1675 str = "drwxr-xr-x";
1676 else if (S_ISLNK(mode))
1677 str = "lrwxrwxrwx";
1678 else if (S_ISGITLINK(mode))
1679 str = "m---------";
1680 else if (S_ISREG(mode) && mode & S_IXUSR)
1681 str = "-rwxr-xr-x";
1682 else if (S_ISREG(mode))
1683 str = "-rw-r--r--";
1684 else
1685 str = "----------";
1687 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
1688 }
1690 static bool
1691 draw_lineno(struct view *view, unsigned int lineno)
1692 {
1693 char number[10];
1694 int digits3 = view->digits < 3 ? 3 : view->digits;
1695 int max = MIN(VIEW_MAX_LEN(view), digits3);
1696 char *text = NULL;
1697 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
1699 lineno += view->offset + 1;
1700 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1701 static char fmt[] = "%1ld";
1703 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
1704 if (string_format(number, fmt, lineno))
1705 text = number;
1706 }
1707 if (text)
1708 draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
1709 else
1710 draw_space(view, LINE_LINE_NUMBER, max, digits3);
1711 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
1712 }
1714 static bool
1715 draw_refs(struct view *view, struct ref_list *refs)
1716 {
1717 size_t i;
1719 if (!opt_show_refs || !refs)
1720 return FALSE;
1722 for (i = 0; i < refs->size; i++) {
1723 struct ref *ref = refs->refs[i];
1724 enum line_type type;
1726 if (ref->head)
1727 type = LINE_MAIN_HEAD;
1728 else if (ref->ltag)
1729 type = LINE_MAIN_LOCAL_TAG;
1730 else if (ref->tag)
1731 type = LINE_MAIN_TAG;
1732 else if (ref->tracked)
1733 type = LINE_MAIN_TRACKED;
1734 else if (ref->remote)
1735 type = LINE_MAIN_REMOTE;
1736 else
1737 type = LINE_MAIN_REF;
1739 if (draw_text(view, type, "[") ||
1740 draw_text(view, type, ref->name) ||
1741 draw_text(view, type, "]"))
1742 return TRUE;
1744 if (draw_text(view, LINE_DEFAULT, " "))
1745 return TRUE;
1746 }
1748 return FALSE;
1749 }
1751 static bool
1752 draw_view_line(struct view *view, unsigned int lineno)
1753 {
1754 struct line *line;
1755 bool selected = (view->offset + lineno == view->lineno);
1757 assert(view_is_displayed(view));
1759 if (view->offset + lineno >= view->lines)
1760 return FALSE;
1762 line = &view->line[view->offset + lineno];
1764 wmove(view->win, lineno, 0);
1765 if (line->cleareol)
1766 wclrtoeol(view->win);
1767 view->col = 0;
1768 view->curline = line;
1769 view->curtype = LINE_NONE;
1770 line->selected = FALSE;
1771 line->dirty = line->cleareol = 0;
1773 if (selected) {
1774 set_view_attr(view, LINE_CURSOR);
1775 line->selected = TRUE;
1776 view->ops->select(view, line);
1777 }
1779 return view->ops->draw(view, line, lineno);
1780 }
1782 static void
1783 redraw_view_dirty(struct view *view)
1784 {
1785 bool dirty = FALSE;
1786 int lineno;
1788 for (lineno = 0; lineno < view->height; lineno++) {
1789 if (view->offset + lineno >= view->lines)
1790 break;
1791 if (!view->line[view->offset + lineno].dirty)
1792 continue;
1793 dirty = TRUE;
1794 if (!draw_view_line(view, lineno))
1795 break;
1796 }
1798 if (!dirty)
1799 return;
1800 wnoutrefresh(view->win);
1801 }
1803 static void
1804 redraw_view_from(struct view *view, int lineno)
1805 {
1806 assert(0 <= lineno && lineno < view->height);
1808 for (; lineno < view->height; lineno++) {
1809 if (!draw_view_line(view, lineno))
1810 break;
1811 }
1813 wnoutrefresh(view->win);
1814 }
1816 static void
1817 redraw_view(struct view *view)
1818 {
1819 werase(view->win);
1820 redraw_view_from(view, 0);
1821 }
1824 static void
1825 update_view_title(struct view *view)
1826 {
1827 char buf[SIZEOF_STR];
1828 char state[SIZEOF_STR];
1829 size_t bufpos = 0, statelen = 0;
1830 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
1832 assert(view_is_displayed(view));
1834 if (view->type != VIEW_STATUS && view->lines) {
1835 unsigned int view_lines = view->offset + view->height;
1836 unsigned int lines = view->lines
1837 ? MIN(view_lines, view->lines) * 100 / view->lines
1838 : 0;
1840 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
1841 view->ops->type,
1842 view->lineno + 1,
1843 view->lines,
1844 lines);
1846 }
1848 if (view->pipe) {
1849 time_t secs = time(NULL) - view->start_time;
1851 /* Three git seconds are a long time ... */
1852 if (secs > 2)
1853 string_format_from(state, &statelen, " loading %lds", secs);
1854 }
1856 string_format_from(buf, &bufpos, "[%s]", view->name);
1857 if (*view->ref && bufpos < view->width) {
1858 size_t refsize = strlen(view->ref);
1859 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1861 if (minsize < view->width)
1862 refsize = view->width - minsize + 7;
1863 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1864 }
1866 if (statelen && bufpos < view->width) {
1867 string_format_from(buf, &bufpos, "%s", state);
1868 }
1870 if (view == display[current_view])
1871 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
1872 else
1873 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
1875 mvwaddnstr(window, 0, 0, buf, bufpos);
1876 wclrtoeol(window);
1877 wnoutrefresh(window);
1878 }
1880 static int
1881 apply_step(double step, int value)
1882 {
1883 if (step >= 1)
1884 return (int) step;
1885 value *= step + 0.01;
1886 return value ? value : 1;
1887 }
1889 static void
1890 resize_display(void)
1891 {
1892 int offset, i;
1893 struct view *base = display[0];
1894 struct view *view = display[1] ? display[1] : display[0];
1896 /* Setup window dimensions */
1898 getmaxyx(stdscr, base->height, base->width);
1900 /* Make room for the status window. */
1901 base->height -= 1;
1903 if (view != base) {
1904 /* Horizontal split. */
1905 view->width = base->width;
1906 view->height = apply_step(opt_scale_split_view, base->height);
1907 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
1908 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
1909 base->height -= view->height;
1911 /* Make room for the title bar. */
1912 view->height -= 1;
1913 }
1915 /* Make room for the title bar. */
1916 base->height -= 1;
1918 offset = 0;
1920 foreach_displayed_view (view, i) {
1921 if (!display_win[i]) {
1922 display_win[i] = newwin(view->height, view->width, offset, 0);
1923 if (!display_win[i])
1924 die("Failed to create %s view", view->name);
1926 scrollok(display_win[i], FALSE);
1928 display_title[i] = newwin(1, view->width, offset + view->height, 0);
1929 if (!display_title[i])
1930 die("Failed to create title window");
1932 } else {
1933 wresize(display_win[i], view->height, view->width);
1934 mvwin(display_win[i], offset, 0);
1935 mvwin(display_title[i], offset + view->height, 0);
1936 }
1938 view->win = display_win[i];
1940 offset += view->height + 1;
1941 }
1942 }
1944 static void
1945 redraw_display(bool clear)
1946 {
1947 struct view *view;
1948 int i;
1950 foreach_displayed_view (view, i) {
1951 if (clear)
1952 wclear(view->win);
1953 redraw_view(view);
1954 update_view_title(view);
1955 }
1956 }
1959 /*
1960 * Option management
1961 */
1963 #define TOGGLE_MENU \
1964 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
1965 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
1966 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
1967 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
1968 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
1969 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
1971 static void
1972 toggle_option(enum request request)
1973 {
1974 const struct {
1975 enum request request;
1976 const struct enum_map *map;
1977 size_t map_size;
1978 } data[] = {
1979 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
1980 TOGGLE_MENU
1981 #undef TOGGLE_
1982 };
1983 const struct menu_item menu[] = {
1984 #define TOGGLE_(id, key, help, value, map) { key, help, value },
1985 TOGGLE_MENU
1986 #undef TOGGLE_
1987 { 0 }
1988 };
1989 int i = 0;
1991 if (request == REQ_OPTIONS) {
1992 if (!prompt_menu("Toggle option", menu, &i))
1993 return;
1994 } else {
1995 while (i < ARRAY_SIZE(data) && data[i].request != request)
1996 i++;
1997 if (i >= ARRAY_SIZE(data))
1998 die("Invalid request (%d)", request);
1999 }
2001 if (data[i].map != NULL) {
2002 unsigned int *opt = menu[i].data;
2004 *opt = (*opt + 1) % data[i].map_size;
2005 redraw_display(FALSE);
2006 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
2008 } else {
2009 bool *option = menu[i].data;
2011 *option = !*option;
2012 redraw_display(FALSE);
2013 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
2014 }
2015 }
2017 static void
2018 maximize_view(struct view *view, bool redraw)
2019 {
2020 memset(display, 0, sizeof(display));
2021 current_view = 0;
2022 display[current_view] = view;
2023 resize_display();
2024 if (redraw) {
2025 redraw_display(FALSE);
2026 report("");
2027 }
2028 }
2031 /*
2032 * Navigation
2033 */
2035 static bool
2036 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2037 {
2038 if (lineno >= view->lines)
2039 lineno = view->lines > 0 ? view->lines - 1 : 0;
2041 if (offset > lineno || offset + view->height <= lineno) {
2042 unsigned long half = view->height / 2;
2044 if (lineno > half)
2045 offset = lineno - half;
2046 else
2047 offset = 0;
2048 }
2050 if (offset != view->offset || lineno != view->lineno) {
2051 view->offset = offset;
2052 view->lineno = lineno;
2053 return TRUE;
2054 }
2056 return FALSE;
2057 }
2059 /* Scrolling backend */
2060 static void
2061 do_scroll_view(struct view *view, int lines)
2062 {
2063 bool redraw_current_line = FALSE;
2065 /* The rendering expects the new offset. */
2066 view->offset += lines;
2068 assert(0 <= view->offset && view->offset < view->lines);
2069 assert(lines);
2071 /* Move current line into the view. */
2072 if (view->lineno < view->offset) {
2073 view->lineno = view->offset;
2074 redraw_current_line = TRUE;
2075 } else if (view->lineno >= view->offset + view->height) {
2076 view->lineno = view->offset + view->height - 1;
2077 redraw_current_line = TRUE;
2078 }
2080 assert(view->offset <= view->lineno && view->lineno < view->lines);
2082 /* Redraw the whole screen if scrolling is pointless. */
2083 if (view->height < ABS(lines)) {
2084 redraw_view(view);
2086 } else {
2087 int line = lines > 0 ? view->height - lines : 0;
2088 int end = line + ABS(lines);
2090 scrollok(view->win, TRUE);
2091 wscrl(view->win, lines);
2092 scrollok(view->win, FALSE);
2094 while (line < end && draw_view_line(view, line))
2095 line++;
2097 if (redraw_current_line)
2098 draw_view_line(view, view->lineno - view->offset);
2099 wnoutrefresh(view->win);
2100 }
2102 view->has_scrolled = TRUE;
2103 report("");
2104 }
2106 /* Scroll frontend */
2107 static void
2108 scroll_view(struct view *view, enum request request)
2109 {
2110 int lines = 1;
2112 assert(view_is_displayed(view));
2114 switch (request) {
2115 case REQ_SCROLL_FIRST_COL:
2116 view->yoffset = 0;
2117 redraw_view_from(view, 0);
2118 report("");
2119 return;
2120 case REQ_SCROLL_LEFT:
2121 if (view->yoffset == 0) {
2122 report("Cannot scroll beyond the first column");
2123 return;
2124 }
2125 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2126 view->yoffset = 0;
2127 else
2128 view->yoffset -= apply_step(opt_hscroll, view->width);
2129 redraw_view_from(view, 0);
2130 report("");
2131 return;
2132 case REQ_SCROLL_RIGHT:
2133 view->yoffset += apply_step(opt_hscroll, view->width);
2134 redraw_view(view);
2135 report("");
2136 return;
2137 case REQ_SCROLL_PAGE_DOWN:
2138 lines = view->height;
2139 case REQ_SCROLL_LINE_DOWN:
2140 if (view->offset + lines > view->lines)
2141 lines = view->lines - view->offset;
2143 if (lines == 0 || view->offset + view->height >= view->lines) {
2144 report("Cannot scroll beyond the last line");
2145 return;
2146 }
2147 break;
2149 case REQ_SCROLL_PAGE_UP:
2150 lines = view->height;
2151 case REQ_SCROLL_LINE_UP:
2152 if (lines > view->offset)
2153 lines = view->offset;
2155 if (lines == 0) {
2156 report("Cannot scroll beyond the first line");
2157 return;
2158 }
2160 lines = -lines;
2161 break;
2163 default:
2164 die("request %d not handled in switch", request);
2165 }
2167 do_scroll_view(view, lines);
2168 }
2170 /* Cursor moving */
2171 static void
2172 move_view(struct view *view, enum request request)
2173 {
2174 int scroll_steps = 0;
2175 int steps;
2177 switch (request) {
2178 case REQ_MOVE_FIRST_LINE:
2179 steps = -view->lineno;
2180 break;
2182 case REQ_MOVE_LAST_LINE:
2183 steps = view->lines - view->lineno - 1;
2184 break;
2186 case REQ_MOVE_PAGE_UP:
2187 steps = view->height > view->lineno
2188 ? -view->lineno : -view->height;
2189 break;
2191 case REQ_MOVE_PAGE_DOWN:
2192 steps = view->lineno + view->height >= view->lines
2193 ? view->lines - view->lineno - 1 : view->height;
2194 break;
2196 case REQ_MOVE_UP:
2197 steps = -1;
2198 break;
2200 case REQ_MOVE_DOWN:
2201 steps = 1;
2202 break;
2204 default:
2205 die("request %d not handled in switch", request);
2206 }
2208 if (steps <= 0 && view->lineno == 0) {
2209 report("Cannot move beyond the first line");
2210 return;
2212 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2213 report("Cannot move beyond the last line");
2214 return;
2215 }
2217 /* Move the current line */
2218 view->lineno += steps;
2219 assert(0 <= view->lineno && view->lineno < view->lines);
2221 /* Check whether the view needs to be scrolled */
2222 if (view->lineno < view->offset ||
2223 view->lineno >= view->offset + view->height) {
2224 scroll_steps = steps;
2225 if (steps < 0 && -steps > view->offset) {
2226 scroll_steps = -view->offset;
2228 } else if (steps > 0) {
2229 if (view->lineno == view->lines - 1 &&
2230 view->lines > view->height) {
2231 scroll_steps = view->lines - view->offset - 1;
2232 if (scroll_steps >= view->height)
2233 scroll_steps -= view->height - 1;
2234 }
2235 }
2236 }
2238 if (!view_is_displayed(view)) {
2239 view->offset += scroll_steps;
2240 assert(0 <= view->offset && view->offset < view->lines);
2241 view->ops->select(view, &view->line[view->lineno]);
2242 return;
2243 }
2245 /* Repaint the old "current" line if we be scrolling */
2246 if (ABS(steps) < view->height)
2247 draw_view_line(view, view->lineno - steps - view->offset);
2249 if (scroll_steps) {
2250 do_scroll_view(view, scroll_steps);
2251 return;
2252 }
2254 /* Draw the current line */
2255 draw_view_line(view, view->lineno - view->offset);
2257 wnoutrefresh(view->win);
2258 report("");
2259 }
2262 /*
2263 * Searching
2264 */
2266 static void search_view(struct view *view, enum request request);
2268 static bool
2269 grep_text(struct view *view, const char *text[])
2270 {
2271 regmatch_t pmatch;
2272 size_t i;
2274 for (i = 0; text[i]; i++)
2275 if (*text[i] &&
2276 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2277 return TRUE;
2278 return FALSE;
2279 }
2281 static void
2282 select_view_line(struct view *view, unsigned long lineno)
2283 {
2284 unsigned long old_lineno = view->lineno;
2285 unsigned long old_offset = view->offset;
2287 if (goto_view_line(view, view->offset, lineno)) {
2288 if (view_is_displayed(view)) {
2289 if (old_offset != view->offset) {
2290 redraw_view(view);
2291 } else {
2292 draw_view_line(view, old_lineno - view->offset);
2293 draw_view_line(view, view->lineno - view->offset);
2294 wnoutrefresh(view->win);
2295 }
2296 } else {
2297 view->ops->select(view, &view->line[view->lineno]);
2298 }
2299 }
2300 }
2302 static void
2303 find_next(struct view *view, enum request request)
2304 {
2305 unsigned long lineno = view->lineno;
2306 int direction;
2308 if (!*view->grep) {
2309 if (!*opt_search)
2310 report("No previous search");
2311 else
2312 search_view(view, request);
2313 return;
2314 }
2316 switch (request) {
2317 case REQ_SEARCH:
2318 case REQ_FIND_NEXT:
2319 direction = 1;
2320 break;
2322 case REQ_SEARCH_BACK:
2323 case REQ_FIND_PREV:
2324 direction = -1;
2325 break;
2327 default:
2328 return;
2329 }
2331 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2332 lineno += direction;
2334 /* Note, lineno is unsigned long so will wrap around in which case it
2335 * will become bigger than view->lines. */
2336 for (; lineno < view->lines; lineno += direction) {
2337 if (view->ops->grep(view, &view->line[lineno])) {
2338 select_view_line(view, lineno);
2339 report("Line %ld matches '%s'", lineno + 1, view->grep);
2340 return;
2341 }
2342 }
2344 report("No match found for '%s'", view->grep);
2345 }
2347 static void
2348 search_view(struct view *view, enum request request)
2349 {
2350 int regex_err;
2352 if (view->regex) {
2353 regfree(view->regex);
2354 *view->grep = 0;
2355 } else {
2356 view->regex = calloc(1, sizeof(*view->regex));
2357 if (!view->regex)
2358 return;
2359 }
2361 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2362 if (regex_err != 0) {
2363 char buf[SIZEOF_STR] = "unknown error";
2365 regerror(regex_err, view->regex, buf, sizeof(buf));
2366 report("Search failed: %s", buf);
2367 return;
2368 }
2370 string_copy(view->grep, opt_search);
2372 find_next(view, request);
2373 }
2375 /*
2376 * Incremental updating
2377 */
2379 static void
2380 reset_view(struct view *view)
2381 {
2382 int i;
2384 for (i = 0; i < view->lines; i++)
2385 free(view->line[i].data);
2386 free(view->line);
2388 view->p_offset = view->offset;
2389 view->p_yoffset = view->yoffset;
2390 view->p_lineno = view->lineno;
2392 view->line = NULL;
2393 view->offset = 0;
2394 view->yoffset = 0;
2395 view->lines = 0;
2396 view->lineno = 0;
2397 view->vid[0] = 0;
2398 view->update_secs = 0;
2399 }
2401 static const char *
2402 format_arg(const char *name)
2403 {
2404 static struct {
2405 const char *name;
2406 size_t namelen;
2407 const char *value;
2408 const char *value_if_empty;
2409 } vars[] = {
2410 #define FORMAT_VAR(name, value, value_if_empty) \
2411 { name, STRING_SIZE(name), value, value_if_empty }
2412 FORMAT_VAR("%(directory)", opt_path, "."),
2413 FORMAT_VAR("%(file)", opt_file, ""),
2414 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2415 FORMAT_VAR("%(head)", ref_head, ""),
2416 FORMAT_VAR("%(commit)", ref_commit, ""),
2417 FORMAT_VAR("%(blob)", ref_blob, ""),
2418 FORMAT_VAR("%(branch)", ref_branch, ""),
2419 };
2420 int i;
2422 for (i = 0; i < ARRAY_SIZE(vars); i++)
2423 if (!strncmp(name, vars[i].name, vars[i].namelen))
2424 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2426 report("Unknown replacement: `%s`", name);
2427 return NULL;
2428 }
2430 static bool
2431 format_argv(const char ***dst_argv, const char *src_argv[], bool first)
2432 {
2433 char buf[SIZEOF_STR];
2434 int argc;
2436 argv_free(*dst_argv);
2438 for (argc = 0; src_argv[argc]; argc++) {
2439 const char *arg = src_argv[argc];
2440 size_t bufpos = 0;
2442 if (!strcmp(arg, "%(fileargs)")) {
2443 if (!argv_append_array(dst_argv, opt_file_argv))
2444 break;
2445 continue;
2447 } else if (!strcmp(arg, "%(diffargs)")) {
2448 if (!argv_append_array(dst_argv, opt_diff_argv))
2449 break;
2450 continue;
2452 } else if (!strcmp(arg, "%(blameargs)")) {
2453 if (!argv_append_array(dst_argv, opt_blame_argv))
2454 break;
2455 continue;
2457 } else if (!strcmp(arg, "%(revargs)") ||
2458 (first && !strcmp(arg, "%(commit)"))) {
2459 if (!argv_append_array(dst_argv, opt_rev_argv))
2460 break;
2461 continue;
2462 }
2464 while (arg) {
2465 char *next = strstr(arg, "%(");
2466 int len = next - arg;
2467 const char *value;
2469 if (!next) {
2470 len = strlen(arg);
2471 value = "";
2473 } else {
2474 value = format_arg(next);
2476 if (!value) {
2477 return FALSE;
2478 }
2479 }
2481 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2482 return FALSE;
2484 arg = next ? strchr(next, ')') + 1 : NULL;
2485 }
2487 if (!argv_append(dst_argv, buf))
2488 break;
2489 }
2491 return src_argv[argc] == NULL;
2492 }
2494 static bool
2495 restore_view_position(struct view *view)
2496 {
2497 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2498 return FALSE;
2500 /* Changing the view position cancels the restoring. */
2501 /* FIXME: Changing back to the first line is not detected. */
2502 if (view->offset != 0 || view->lineno != 0) {
2503 view->p_restore = FALSE;
2504 return FALSE;
2505 }
2507 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2508 view_is_displayed(view))
2509 werase(view->win);
2511 view->yoffset = view->p_yoffset;
2512 view->p_restore = FALSE;
2514 return TRUE;
2515 }
2517 static void
2518 end_update(struct view *view, bool force)
2519 {
2520 if (!view->pipe)
2521 return;
2522 while (!view->ops->read(view, NULL))
2523 if (!force)
2524 return;
2525 if (force)
2526 io_kill(view->pipe);
2527 io_done(view->pipe);
2528 view->pipe = NULL;
2529 }
2531 static void
2532 setup_update(struct view *view, const char *vid)
2533 {
2534 reset_view(view);
2535 string_copy_rev(view->vid, vid);
2536 view->pipe = &view->io;
2537 view->start_time = time(NULL);
2538 }
2540 static bool
2541 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
2542 {
2543 bool extra = !!(flags & (OPEN_EXTRA));
2544 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED | OPEN_EXTRA));
2545 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2547 if (!reload && !strcmp(view->vid, view->id))
2548 return TRUE;
2550 if (view->pipe) {
2551 if (extra)
2552 io_done(view->pipe);
2553 else
2554 end_update(view, TRUE);
2555 }
2557 if (!refresh) {
2558 view->dir = dir;
2559 if (!format_argv(&view->argv, argv, !view->prev))
2560 return FALSE;
2562 /* Put the current ref_* value to the view title ref
2563 * member. This is needed by the blob view. Most other
2564 * views sets it automatically after loading because the
2565 * first line is a commit line. */
2566 string_copy_rev(view->ref, view->id);
2567 }
2569 if (view->argv && view->argv[0] &&
2570 !io_run(&view->io, IO_RD, view->dir, view->argv))
2571 return FALSE;
2573 if (!extra)
2574 setup_update(view, view->id);
2576 return TRUE;
2577 }
2579 static bool
2580 view_open(struct view *view, enum open_flags flags)
2581 {
2582 return begin_update(view, NULL, NULL, flags);
2583 }
2585 static bool
2586 update_view(struct view *view)
2587 {
2588 char out_buffer[BUFSIZ * 2];
2589 char *line;
2590 /* Clear the view and redraw everything since the tree sorting
2591 * might have rearranged things. */
2592 bool redraw = view->lines == 0;
2593 bool can_read = TRUE;
2595 if (!view->pipe)
2596 return TRUE;
2598 if (!io_can_read(view->pipe, FALSE)) {
2599 if (view->lines == 0 && view_is_displayed(view)) {
2600 time_t secs = time(NULL) - view->start_time;
2602 if (secs > 1 && secs > view->update_secs) {
2603 if (view->update_secs == 0)
2604 redraw_view(view);
2605 update_view_title(view);
2606 view->update_secs = secs;
2607 }
2608 }
2609 return TRUE;
2610 }
2612 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2613 if (opt_iconv_in != ICONV_NONE) {
2614 ICONV_CONST char *inbuf = line;
2615 size_t inlen = strlen(line) + 1;
2617 char *outbuf = out_buffer;
2618 size_t outlen = sizeof(out_buffer);
2620 size_t ret;
2622 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2623 if (ret != (size_t) -1)
2624 line = out_buffer;
2625 }
2627 if (!view->ops->read(view, line)) {
2628 report("Allocation failure");
2629 end_update(view, TRUE);
2630 return FALSE;
2631 }
2632 }
2634 {
2635 unsigned long lines = view->lines;
2636 int digits;
2638 for (digits = 0; lines; digits++)
2639 lines /= 10;
2641 /* Keep the displayed view in sync with line number scaling. */
2642 if (digits != view->digits) {
2643 view->digits = digits;
2644 if (opt_line_number || view->type == VIEW_BLAME)
2645 redraw = TRUE;
2646 }
2647 }
2649 if (io_error(view->pipe)) {
2650 report("Failed to read: %s", io_strerror(view->pipe));
2651 end_update(view, TRUE);
2653 } else if (io_eof(view->pipe)) {
2654 if (view_is_displayed(view))
2655 report("");
2656 end_update(view, FALSE);
2657 }
2659 if (restore_view_position(view))
2660 redraw = TRUE;
2662 if (!view_is_displayed(view))
2663 return TRUE;
2665 if (redraw)
2666 redraw_view_from(view, 0);
2667 else
2668 redraw_view_dirty(view);
2670 /* Update the title _after_ the redraw so that if the redraw picks up a
2671 * commit reference in view->ref it'll be available here. */
2672 update_view_title(view);
2673 return TRUE;
2674 }
2676 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2678 static struct line *
2679 add_line_data(struct view *view, void *data, enum line_type type)
2680 {
2681 struct line *line;
2683 if (!realloc_lines(&view->line, view->lines, 1))
2684 return NULL;
2686 line = &view->line[view->lines++];
2687 memset(line, 0, sizeof(*line));
2688 line->type = type;
2689 line->data = data;
2690 line->dirty = 1;
2692 return line;
2693 }
2695 static struct line *
2696 add_line_text(struct view *view, const char *text, enum line_type type)
2697 {
2698 char *data = text ? strdup(text) : NULL;
2700 return data ? add_line_data(view, data, type) : NULL;
2701 }
2703 static struct line *
2704 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2705 {
2706 char buf[SIZEOF_STR];
2707 va_list args;
2709 va_start(args, fmt);
2710 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2711 buf[0] = 0;
2712 va_end(args);
2714 return buf[0] ? add_line_text(view, buf, type) : NULL;
2715 }
2717 /*
2718 * View opening
2719 */
2721 static void
2722 load_view(struct view *view, enum open_flags flags)
2723 {
2724 if (view->pipe)
2725 end_update(view, TRUE);
2726 if (!view->ops->open(view, flags)) {
2727 report("Failed to load %s view", view->name);
2728 return;
2729 }
2730 restore_view_position(view);
2732 if (view->pipe && view->lines == 0) {
2733 /* Clear the old view and let the incremental updating refill
2734 * the screen. */
2735 werase(view->win);
2736 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2737 report("");
2738 } else if (view_is_displayed(view)) {
2739 redraw_view(view);
2740 report("");
2741 }
2742 }
2744 #define refresh_view(view) load_view(view, OPEN_REFRESH)
2746 static void
2747 split_view(struct view *prev, struct view *view)
2748 {
2749 display[1] = view;
2750 current_view = 1;
2751 view->parent = prev;
2752 resize_display();
2754 if (prev->lineno - prev->offset >= prev->height) {
2755 /* Take the title line into account. */
2756 int lines = prev->lineno - prev->offset - prev->height + 1;
2758 /* Scroll the view that was split if the current line is
2759 * outside the new limited view. */
2760 do_scroll_view(prev, lines);
2761 }
2763 if (view != prev && view_is_displayed(prev)) {
2764 /* "Blur" the previous view. */
2765 update_view_title(prev);
2766 }
2767 }
2769 static void
2770 open_view(struct view *prev, enum request request, enum open_flags flags)
2771 {
2772 bool split = !!(flags & OPEN_SPLIT);
2773 bool reload = !!(flags & (OPEN_RELOAD | OPEN_PREPARED));
2774 struct view *view = VIEW(request);
2775 int nviews = displayed_views();
2777 assert(flags ^ OPEN_REFRESH);
2779 if (view == prev && nviews == 1 && !reload) {
2780 report("Already in %s view", view->name);
2781 return;
2782 }
2784 if (view->git_dir && !opt_git_dir[0]) {
2785 report("The %s view is disabled in pager view", view->name);
2786 return;
2787 }
2789 if (split) {
2790 split_view(prev, view);
2791 } else {
2792 maximize_view(view, FALSE);
2793 }
2795 /* No prev signals that this is the first loaded view. */
2796 if (prev && view != prev) {
2797 view->prev = prev;
2798 }
2800 load_view(view, flags);
2801 }
2803 static void
2804 open_argv(struct view *prev, struct view *view, const char *argv[], const char *dir, enum open_flags flags)
2805 {
2806 enum request request = view - views + REQ_OFFSET + 1;
2808 if (view->pipe)
2809 end_update(view, TRUE);
2810 view->dir = dir;
2812 if (!argv_copy(&view->argv, argv)) {
2813 report("Failed to open %s view: %s", view->name, io_strerror(&view->io));
2814 } else {
2815 open_view(prev, request, flags | OPEN_PREPARED);
2816 }
2817 }
2819 static void
2820 open_file(struct view *prev, struct view *view, const char *file, enum open_flags flags)
2821 {
2822 const char *file_argv[] = { opt_cdup, file , NULL };
2824 open_argv(prev, view, file_argv, opt_cdup, flags);
2825 }
2827 static void
2828 open_external_viewer(const char *argv[], const char *dir)
2829 {
2830 def_prog_mode(); /* save current tty modes */
2831 endwin(); /* restore original tty modes */
2832 io_run_fg(argv, dir);
2833 fprintf(stderr, "Press Enter to continue");
2834 getc(opt_tty);
2835 reset_prog_mode();
2836 redraw_display(TRUE);
2837 }
2839 static void
2840 open_mergetool(const char *file)
2841 {
2842 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2844 open_external_viewer(mergetool_argv, opt_cdup);
2845 }
2847 static void
2848 open_editor(const char *file)
2849 {
2850 const char *editor_argv[] = { "vi", file, NULL };
2851 const char *editor;
2853 editor = getenv("GIT_EDITOR");
2854 if (!editor && *opt_editor)
2855 editor = opt_editor;
2856 if (!editor)
2857 editor = getenv("VISUAL");
2858 if (!editor)
2859 editor = getenv("EDITOR");
2860 if (!editor)
2861 editor = "vi";
2863 editor_argv[0] = editor;
2864 open_external_viewer(editor_argv, opt_cdup);
2865 }
2867 static void
2868 open_run_request(enum request request)
2869 {
2870 struct run_request *req = get_run_request(request);
2871 const char **argv = NULL;
2873 if (!req) {
2874 report("Unknown run request");
2875 return;
2876 }
2878 if (format_argv(&argv, req->argv, FALSE))
2879 open_external_viewer(argv, NULL);
2880 if (argv)
2881 argv_free(argv);
2882 free(argv);
2883 }
2885 /*
2886 * User request switch noodle
2887 */
2889 static int
2890 view_driver(struct view *view, enum request request)
2891 {
2892 int i;
2894 if (request == REQ_NONE)
2895 return TRUE;
2897 if (request > REQ_NONE) {
2898 open_run_request(request);
2899 view_request(view, REQ_REFRESH);
2900 return TRUE;
2901 }
2903 request = view_request(view, request);
2904 if (request == REQ_NONE)
2905 return TRUE;
2907 switch (request) {
2908 case REQ_MOVE_UP:
2909 case REQ_MOVE_DOWN:
2910 case REQ_MOVE_PAGE_UP:
2911 case REQ_MOVE_PAGE_DOWN:
2912 case REQ_MOVE_FIRST_LINE:
2913 case REQ_MOVE_LAST_LINE:
2914 move_view(view, request);
2915 break;
2917 case REQ_SCROLL_FIRST_COL:
2918 case REQ_SCROLL_LEFT:
2919 case REQ_SCROLL_RIGHT:
2920 case REQ_SCROLL_LINE_DOWN:
2921 case REQ_SCROLL_LINE_UP:
2922 case REQ_SCROLL_PAGE_DOWN:
2923 case REQ_SCROLL_PAGE_UP:
2924 scroll_view(view, request);
2925 break;
2927 case REQ_VIEW_BLAME:
2928 if (!opt_file[0]) {
2929 report("No file chosen, press %s to open tree view",
2930 get_key(view->keymap, REQ_VIEW_TREE));
2931 break;
2932 }
2933 open_view(view, request, OPEN_DEFAULT);
2934 break;
2936 case REQ_VIEW_BLOB:
2937 if (!ref_blob[0]) {
2938 report("No file chosen, press %s to open tree view",
2939 get_key(view->keymap, REQ_VIEW_TREE));
2940 break;
2941 }
2942 open_view(view, request, OPEN_DEFAULT);
2943 break;
2945 case REQ_VIEW_PAGER:
2946 if (view == NULL) {
2947 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2948 die("Failed to open stdin");
2949 open_view(view, request, OPEN_PREPARED);
2950 break;
2951 }
2953 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2954 report("No pager content, press %s to run command from prompt",
2955 get_key(view->keymap, REQ_PROMPT));
2956 break;
2957 }
2958 open_view(view, request, OPEN_DEFAULT);
2959 break;
2961 case REQ_VIEW_STAGE:
2962 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2963 report("No stage content, press %s to open the status view and choose file",
2964 get_key(view->keymap, REQ_VIEW_STATUS));
2965 break;
2966 }
2967 open_view(view, request, OPEN_DEFAULT);
2968 break;
2970 case REQ_VIEW_STATUS:
2971 if (opt_is_inside_work_tree == FALSE) {
2972 report("The status view requires a working tree");
2973 break;
2974 }
2975 open_view(view, request, OPEN_DEFAULT);
2976 break;
2978 case REQ_VIEW_MAIN:
2979 case REQ_VIEW_DIFF:
2980 case REQ_VIEW_LOG:
2981 case REQ_VIEW_TREE:
2982 case REQ_VIEW_HELP:
2983 case REQ_VIEW_BRANCH:
2984 open_view(view, request, OPEN_DEFAULT);
2985 break;
2987 case REQ_NEXT:
2988 case REQ_PREVIOUS:
2989 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2991 if (view->parent) {
2992 int line;
2994 view = view->parent;
2995 line = view->lineno;
2996 move_view(view, request);
2997 if (view_is_displayed(view))
2998 update_view_title(view);
2999 if (line != view->lineno)
3000 view_request(view, REQ_ENTER);
3001 } else {
3002 move_view(view, request);
3003 }
3004 break;
3006 case REQ_VIEW_NEXT:
3007 {
3008 int nviews = displayed_views();
3009 int next_view = (current_view + 1) % nviews;
3011 if (next_view == current_view) {
3012 report("Only one view is displayed");
3013 break;
3014 }
3016 current_view = next_view;
3017 /* Blur out the title of the previous view. */
3018 update_view_title(view);
3019 report("");
3020 break;
3021 }
3022 case REQ_REFRESH:
3023 report("Refreshing is not yet supported for the %s view", view->name);
3024 break;
3026 case REQ_MAXIMIZE:
3027 if (displayed_views() == 2)
3028 maximize_view(view, TRUE);
3029 break;
3031 case REQ_OPTIONS:
3032 case REQ_TOGGLE_LINENO:
3033 case REQ_TOGGLE_DATE:
3034 case REQ_TOGGLE_AUTHOR:
3035 case REQ_TOGGLE_GRAPHIC:
3036 case REQ_TOGGLE_REV_GRAPH:
3037 case REQ_TOGGLE_REFS:
3038 toggle_option(request);
3039 break;
3041 case REQ_TOGGLE_SORT_FIELD:
3042 case REQ_TOGGLE_SORT_ORDER:
3043 report("Sorting is not yet supported for the %s view", view->name);
3044 break;
3046 case REQ_SEARCH:
3047 case REQ_SEARCH_BACK:
3048 search_view(view, request);
3049 break;
3051 case REQ_FIND_NEXT:
3052 case REQ_FIND_PREV:
3053 find_next(view, request);
3054 break;
3056 case REQ_STOP_LOADING:
3057 foreach_view(view, i) {
3058 if (view->pipe)
3059 report("Stopped loading the %s view", view->name),
3060 end_update(view, TRUE);
3061 }
3062 break;
3064 case REQ_SHOW_VERSION:
3065 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3066 return TRUE;
3068 case REQ_SCREEN_REDRAW:
3069 redraw_display(TRUE);
3070 break;
3072 case REQ_EDIT:
3073 report("Nothing to edit");
3074 break;
3076 case REQ_ENTER:
3077 report("Nothing to enter");
3078 break;
3080 case REQ_VIEW_CLOSE:
3081 /* XXX: Mark closed views by letting view->prev point to the
3082 * view itself. Parents to closed view should never be
3083 * followed. */
3084 if (view->prev && view->prev != view) {
3085 maximize_view(view->prev, TRUE);
3086 view->prev = view;
3087 break;
3088 }
3089 /* Fall-through */
3090 case REQ_QUIT:
3091 return FALSE;
3093 default:
3094 report("Unknown key, press %s for help",
3095 get_key(view->keymap, REQ_VIEW_HELP));
3096 return TRUE;
3097 }
3099 return TRUE;
3100 }
3103 /*
3104 * View backend utilities
3105 */
3107 enum sort_field {
3108 ORDERBY_NAME,
3109 ORDERBY_DATE,
3110 ORDERBY_AUTHOR,
3111 };
3113 struct sort_state {
3114 const enum sort_field *fields;
3115 size_t size, current;
3116 bool reverse;
3117 };
3119 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3120 #define get_sort_field(state) ((state).fields[(state).current])
3121 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3123 static void
3124 sort_view(struct view *view, enum request request, struct sort_state *state,
3125 int (*compare)(const void *, const void *))
3126 {
3127 switch (request) {
3128 case REQ_TOGGLE_SORT_FIELD:
3129 state->current = (state->current + 1) % state->size;
3130 break;
3132 case REQ_TOGGLE_SORT_ORDER:
3133 state->reverse = !state->reverse;
3134 break;
3135 default:
3136 die("Not a sort request");
3137 }
3139 qsort(view->line, view->lines, sizeof(*view->line), compare);
3140 redraw_view(view);
3141 }
3143 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3145 /* Small author cache to reduce memory consumption. It uses binary
3146 * search to lookup or find place to position new entries. No entries
3147 * are ever freed. */
3148 static const char *
3149 get_author(const char *name)
3150 {
3151 static const char **authors;
3152 static size_t authors_size;
3153 int from = 0, to = authors_size - 1;
3155 while (from <= to) {
3156 size_t pos = (to + from) / 2;
3157 int cmp = strcmp(name, authors[pos]);
3159 if (!cmp)
3160 return authors[pos];
3162 if (cmp < 0)
3163 to = pos - 1;
3164 else
3165 from = pos + 1;
3166 }
3168 if (!realloc_authors(&authors, authors_size, 1))
3169 return NULL;
3170 name = strdup(name);
3171 if (!name)
3172 return NULL;
3174 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3175 authors[from] = name;
3176 authors_size++;
3178 return name;
3179 }
3181 static void
3182 parse_timesec(struct time *time, const char *sec)
3183 {
3184 time->sec = (time_t) atol(sec);
3185 }
3187 static void
3188 parse_timezone(struct time *time, const char *zone)
3189 {
3190 long tz;
3192 tz = ('0' - zone[1]) * 60 * 60 * 10;
3193 tz += ('0' - zone[2]) * 60 * 60;
3194 tz += ('0' - zone[3]) * 60 * 10;
3195 tz += ('0' - zone[4]) * 60;
3197 if (zone[0] == '-')
3198 tz = -tz;
3200 time->tz = tz;
3201 time->sec -= tz;
3202 }
3204 /* Parse author lines where the name may be empty:
3205 * author <email@address.tld> 1138474660 +0100
3206 */
3207 static void
3208 parse_author_line(char *ident, const char **author, struct time *time)
3209 {
3210 char *nameend = strchr(ident, '<');
3211 char *emailend = strchr(ident, '>');
3213 if (nameend && emailend)
3214 *nameend = *emailend = 0;
3215 ident = chomp_string(ident);
3216 if (!*ident) {
3217 if (nameend)
3218 ident = chomp_string(nameend + 1);
3219 if (!*ident)
3220 ident = "Unknown";
3221 }
3223 *author = get_author(ident);
3225 /* Parse epoch and timezone */
3226 if (emailend && emailend[1] == ' ') {
3227 char *secs = emailend + 2;
3228 char *zone = strchr(secs, ' ');
3230 parse_timesec(time, secs);
3232 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3233 parse_timezone(time, zone + 1);
3234 }
3235 }
3237 /*
3238 * Pager backend
3239 */
3241 static bool
3242 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3243 {
3244 if (opt_line_number && draw_lineno(view, lineno))
3245 return TRUE;
3247 draw_text(view, line->type, line->data);
3248 return TRUE;
3249 }
3251 static bool
3252 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3253 {
3254 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3255 char ref[SIZEOF_STR];
3257 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3258 return TRUE;
3260 /* This is the only fatal call, since it can "corrupt" the buffer. */
3261 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3262 return FALSE;
3264 return TRUE;
3265 }
3267 static void
3268 add_pager_refs(struct view *view, struct line *line)
3269 {
3270 char buf[SIZEOF_STR];
3271 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3272 struct ref_list *list;
3273 size_t bufpos = 0, i;
3274 const char *sep = "Refs: ";
3275 bool is_tag = FALSE;
3277 assert(line->type == LINE_COMMIT);
3279 list = get_ref_list(commit_id);
3280 if (!list) {
3281 if (view->type == VIEW_DIFF)
3282 goto try_add_describe_ref;
3283 return;
3284 }
3286 for (i = 0; i < list->size; i++) {
3287 struct ref *ref = list->refs[i];
3288 const char *fmt = ref->tag ? "%s[%s]" :
3289 ref->remote ? "%s<%s>" : "%s%s";
3291 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3292 return;
3293 sep = ", ";
3294 if (ref->tag)
3295 is_tag = TRUE;
3296 }
3298 if (!is_tag && view->type == VIEW_DIFF) {
3299 try_add_describe_ref:
3300 /* Add <tag>-g<commit_id> "fake" reference. */
3301 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3302 return;
3303 }
3305 if (bufpos == 0)
3306 return;
3308 add_line_text(view, buf, LINE_PP_REFS);
3309 }
3311 static bool
3312 pager_read(struct view *view, char *data)
3313 {
3314 struct line *line;
3316 if (!data)
3317 return TRUE;
3319 line = add_line_text(view, data, get_line_type(data));
3320 if (!line)
3321 return FALSE;
3323 if (line->type == LINE_COMMIT &&
3324 (view->type == VIEW_DIFF ||
3325 view->type == VIEW_LOG))
3326 add_pager_refs(view, line);
3328 return TRUE;
3329 }
3331 static enum request
3332 pager_request(struct view *view, enum request request, struct line *line)
3333 {
3334 int split = 0;
3336 if (request != REQ_ENTER)
3337 return request;
3339 if (line->type == LINE_COMMIT &&
3340 (view->type == VIEW_LOG ||
3341 view->type == VIEW_PAGER)) {
3342 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3343 split = 1;
3344 }
3346 /* Always scroll the view even if it was split. That way
3347 * you can use Enter to scroll through the log view and
3348 * split open each commit diff. */
3349 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3351 /* FIXME: A minor workaround. Scrolling the view will call report("")
3352 * but if we are scrolling a non-current view this won't properly
3353 * update the view title. */
3354 if (split)
3355 update_view_title(view);
3357 return REQ_NONE;
3358 }
3360 static bool
3361 pager_grep(struct view *view, struct line *line)
3362 {
3363 const char *text[] = { line->data, NULL };
3365 return grep_text(view, text);
3366 }
3368 static void
3369 pager_select(struct view *view, struct line *line)
3370 {
3371 if (line->type == LINE_COMMIT) {
3372 char *text = (char *)line->data + STRING_SIZE("commit ");
3374 if (view->type != VIEW_PAGER)
3375 string_copy_rev(view->ref, text);
3376 string_copy_rev(ref_commit, text);
3377 }
3378 }
3380 static struct view_ops pager_ops = {
3381 "line",
3382 view_open,
3383 pager_read,
3384 pager_draw,
3385 pager_request,
3386 pager_grep,
3387 pager_select,
3388 };
3390 static bool
3391 log_open(struct view *view, enum open_flags flags)
3392 {
3393 static const char *log_argv[] = {
3394 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3395 };
3397 return begin_update(view, NULL, log_argv, flags);
3398 }
3400 static enum request
3401 log_request(struct view *view, enum request request, struct line *line)
3402 {
3403 switch (request) {
3404 case REQ_REFRESH:
3405 load_refs();
3406 refresh_view(view);
3407 return REQ_NONE;
3408 default:
3409 return pager_request(view, request, line);
3410 }
3411 }
3413 static struct view_ops log_ops = {
3414 "line",
3415 log_open,
3416 pager_read,
3417 pager_draw,
3418 log_request,
3419 pager_grep,
3420 pager_select,
3421 };
3423 static bool
3424 diff_open(struct view *view, enum open_flags flags)
3425 {
3426 static const char *diff_argv[] = {
3427 "git", "show", "--pretty=fuller", "--no-color", "--root",
3428 "--patch-with-stat", "--find-copies-harder", "-C",
3429 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3430 };
3432 return begin_update(view, NULL, diff_argv, flags);
3433 }
3435 static bool
3436 diff_read(struct view *view, char *data)
3437 {
3438 if (!data) {
3439 /* Fall back to retry if no diff will be shown. */
3440 if (view->lines == 0 && opt_file_argv) {
3441 int pos = argv_size(view->argv)
3442 - argv_size(opt_file_argv) - 1;
3444 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3445 for (; view->argv[pos]; pos++) {
3446 free((void *) view->argv[pos]);
3447 view->argv[pos] = NULL;
3448 }
3450 if (view->pipe)
3451 io_done(view->pipe);
3452 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3453 return FALSE;
3454 }
3455 }
3456 return TRUE;
3457 }
3459 return pager_read(view, data);
3460 }
3462 static struct view_ops diff_ops = {
3463 "line",
3464 diff_open,
3465 diff_read,
3466 pager_draw,
3467 pager_request,
3468 pager_grep,
3469 pager_select,
3470 };
3472 /*
3473 * Help backend
3474 */
3476 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
3478 static bool
3479 help_open_keymap_title(struct view *view, enum keymap keymap)
3480 {
3481 struct line *line;
3483 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3484 help_keymap_hidden[keymap] ? '+' : '-',
3485 enum_name(keymap_table[keymap]));
3486 if (line)
3487 line->other = keymap;
3489 return help_keymap_hidden[keymap];
3490 }
3492 static void
3493 help_open_keymap(struct view *view, enum keymap keymap)
3494 {
3495 const char *group = NULL;
3496 char buf[SIZEOF_STR];
3497 size_t bufpos;
3498 bool add_title = TRUE;
3499 int i;
3501 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3502 const char *key = NULL;
3504 if (req_info[i].request == REQ_NONE)
3505 continue;
3507 if (!req_info[i].request) {
3508 group = req_info[i].help;
3509 continue;
3510 }
3512 key = get_keys(keymap, req_info[i].request, TRUE);
3513 if (!key || !*key)
3514 continue;
3516 if (add_title && help_open_keymap_title(view, keymap))
3517 return;
3518 add_title = FALSE;
3520 if (group) {
3521 add_line_text(view, group, LINE_HELP_GROUP);
3522 group = NULL;
3523 }
3525 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3526 enum_name(req_info[i]), req_info[i].help);
3527 }
3529 group = "External commands:";
3531 for (i = 0; i < run_requests; i++) {
3532 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3533 const char *key;
3534 int argc;
3536 if (!req || req->keymap != keymap)
3537 continue;
3539 key = get_key_name(req->key);
3540 if (!*key)
3541 key = "(no key defined)";
3543 if (add_title && help_open_keymap_title(view, keymap))
3544 return;
3545 if (group) {
3546 add_line_text(view, group, LINE_HELP_GROUP);
3547 group = NULL;
3548 }
3550 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3551 if (!string_format_from(buf, &bufpos, "%s%s",
3552 argc ? " " : "", req->argv[argc]))
3553 return;
3555 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3556 }
3557 }
3559 static bool
3560 help_open(struct view *view, enum open_flags flags)
3561 {
3562 enum keymap keymap;
3564 reset_view(view);
3565 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3566 add_line_text(view, "", LINE_DEFAULT);
3568 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
3569 help_open_keymap(view, keymap);
3571 return TRUE;
3572 }
3574 static enum request
3575 help_request(struct view *view, enum request request, struct line *line)
3576 {
3577 switch (request) {
3578 case REQ_ENTER:
3579 if (line->type == LINE_HELP_KEYMAP) {
3580 help_keymap_hidden[line->other] =
3581 !help_keymap_hidden[line->other];
3582 refresh_view(view);
3583 }
3585 return REQ_NONE;
3586 default:
3587 return pager_request(view, request, line);
3588 }
3589 }
3591 static struct view_ops help_ops = {
3592 "line",
3593 help_open,
3594 NULL,
3595 pager_draw,
3596 help_request,
3597 pager_grep,
3598 pager_select,
3599 };
3602 /*
3603 * Tree backend
3604 */
3606 struct tree_stack_entry {
3607 struct tree_stack_entry *prev; /* Entry below this in the stack */
3608 unsigned long lineno; /* Line number to restore */
3609 char *name; /* Position of name in opt_path */
3610 };
3612 /* The top of the path stack. */
3613 static struct tree_stack_entry *tree_stack = NULL;
3614 unsigned long tree_lineno = 0;
3616 static void
3617 pop_tree_stack_entry(void)
3618 {
3619 struct tree_stack_entry *entry = tree_stack;
3621 tree_lineno = entry->lineno;
3622 entry->name[0] = 0;
3623 tree_stack = entry->prev;
3624 free(entry);
3625 }
3627 static void
3628 push_tree_stack_entry(const char *name, unsigned long lineno)
3629 {
3630 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3631 size_t pathlen = strlen(opt_path);
3633 if (!entry)
3634 return;
3636 entry->prev = tree_stack;
3637 entry->name = opt_path + pathlen;
3638 tree_stack = entry;
3640 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3641 pop_tree_stack_entry();
3642 return;
3643 }
3645 /* Move the current line to the first tree entry. */
3646 tree_lineno = 1;
3647 entry->lineno = lineno;
3648 }
3650 /* Parse output from git-ls-tree(1):
3651 *
3652 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3653 */
3655 #define SIZEOF_TREE_ATTR \
3656 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3658 #define SIZEOF_TREE_MODE \
3659 STRING_SIZE("100644 ")
3661 #define TREE_ID_OFFSET \
3662 STRING_SIZE("100644 blob ")
3664 struct tree_entry {
3665 char id[SIZEOF_REV];
3666 mode_t mode;
3667 struct time time; /* Date from the author ident. */
3668 const char *author; /* Author of the commit. */
3669 char name[1];
3670 };
3672 static const char *
3673 tree_path(const struct line *line)
3674 {
3675 return ((struct tree_entry *) line->data)->name;
3676 }
3678 static int
3679 tree_compare_entry(const struct line *line1, const struct line *line2)
3680 {
3681 if (line1->type != line2->type)
3682 return line1->type == LINE_TREE_DIR ? -1 : 1;
3683 return strcmp(tree_path(line1), tree_path(line2));
3684 }
3686 static const enum sort_field tree_sort_fields[] = {
3687 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3688 };
3689 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3691 static int
3692 tree_compare(const void *l1, const void *l2)
3693 {
3694 const struct line *line1 = (const struct line *) l1;
3695 const struct line *line2 = (const struct line *) l2;
3696 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3697 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3699 if (line1->type == LINE_TREE_HEAD)
3700 return -1;
3701 if (line2->type == LINE_TREE_HEAD)
3702 return 1;
3704 switch (get_sort_field(tree_sort_state)) {
3705 case ORDERBY_DATE:
3706 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3708 case ORDERBY_AUTHOR:
3709 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3711 case ORDERBY_NAME:
3712 default:
3713 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3714 }
3715 }
3718 static struct line *
3719 tree_entry(struct view *view, enum line_type type, const char *path,
3720 const char *mode, const char *id)
3721 {
3722 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3723 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3725 if (!entry || !line) {
3726 free(entry);
3727 return NULL;
3728 }
3730 strncpy(entry->name, path, strlen(path));
3731 if (mode)
3732 entry->mode = strtoul(mode, NULL, 8);
3733 if (id)
3734 string_copy_rev(entry->id, id);
3736 return line;
3737 }
3739 static bool
3740 tree_read_date(struct view *view, char *text, bool *read_date)
3741 {
3742 static const char *author_name;
3743 static struct time author_time;
3745 if (!text && *read_date) {
3746 *read_date = FALSE;
3747 return TRUE;
3749 } else if (!text) {
3750 /* Find next entry to process */
3751 const char *log_file[] = {
3752 "git", "log", "--no-color", "--pretty=raw",
3753 "--cc", "--raw", view->id, "--", "%(directory)", NULL
3754 };
3756 if (!view->lines) {
3757 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3758 report("Tree is empty");
3759 return TRUE;
3760 }
3762 if (!begin_update(view, opt_cdup, log_file, OPEN_EXTRA)) {
3763 report("Failed to load tree data");
3764 return TRUE;
3765 }
3767 *read_date = TRUE;
3768 return FALSE;
3770 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3771 parse_author_line(text + STRING_SIZE("author "),
3772 &author_name, &author_time);
3774 } else if (*text == ':') {
3775 char *pos;
3776 size_t annotated = 1;
3777 size_t i;
3779 pos = strchr(text, '\t');
3780 if (!pos)
3781 return TRUE;
3782 text = pos + 1;
3783 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3784 text += strlen(opt_path);
3785 pos = strchr(text, '/');
3786 if (pos)
3787 *pos = 0;
3789 for (i = 1; i < view->lines; i++) {
3790 struct line *line = &view->line[i];
3791 struct tree_entry *entry = line->data;
3793 annotated += !!entry->author;
3794 if (entry->author || strcmp(entry->name, text))
3795 continue;
3797 entry->author = author_name;
3798 entry->time = author_time;
3799 line->dirty = 1;
3800 break;
3801 }
3803 if (annotated == view->lines)
3804 io_kill(view->pipe);
3805 }
3806 return TRUE;
3807 }
3809 static bool
3810 tree_read(struct view *view, char *text)
3811 {
3812 static bool read_date = FALSE;
3813 struct tree_entry *data;
3814 struct line *entry, *line;
3815 enum line_type type;
3816 size_t textlen = text ? strlen(text) : 0;
3817 char *path = text + SIZEOF_TREE_ATTR;
3819 if (read_date || !text)
3820 return tree_read_date(view, text, &read_date);
3822 if (textlen <= SIZEOF_TREE_ATTR)
3823 return FALSE;
3824 if (view->lines == 0 &&
3825 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3826 return FALSE;
3828 /* Strip the path part ... */
3829 if (*opt_path) {
3830 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3831 size_t striplen = strlen(opt_path);
3833 if (pathlen > striplen)
3834 memmove(path, path + striplen,
3835 pathlen - striplen + 1);
3837 /* Insert "link" to parent directory. */
3838 if (view->lines == 1 &&
3839 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3840 return FALSE;
3841 }
3843 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3844 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3845 if (!entry)
3846 return FALSE;
3847 data = entry->data;
3849 /* Skip "Directory ..." and ".." line. */
3850 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3851 if (tree_compare_entry(line, entry) <= 0)
3852 continue;
3854 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3856 line->data = data;
3857 line->type = type;
3858 for (; line <= entry; line++)
3859 line->dirty = line->cleareol = 1;
3860 return TRUE;
3861 }
3863 if (tree_lineno > view->lineno) {
3864 view->lineno = tree_lineno;
3865 tree_lineno = 0;
3866 }
3868 return TRUE;
3869 }
3871 static bool
3872 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3873 {
3874 struct tree_entry *entry = line->data;
3876 if (line->type == LINE_TREE_HEAD) {
3877 if (draw_text(view, line->type, "Directory path /"))
3878 return TRUE;
3879 } else {
3880 if (draw_mode(view, entry->mode))
3881 return TRUE;
3883 if (draw_author(view, entry->author))
3884 return TRUE;
3886 if (draw_date(view, &entry->time))
3887 return TRUE;
3888 }
3890 draw_text(view, line->type, entry->name);
3891 return TRUE;
3892 }
3894 static void
3895 open_blob_editor(const char *id)
3896 {
3897 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3898 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3899 int fd = mkstemp(file);
3901 if (fd == -1)
3902 report("Failed to create temporary file");
3903 else if (!io_run_append(blob_argv, fd))
3904 report("Failed to save blob data to file");
3905 else
3906 open_editor(file);
3907 if (fd != -1)
3908 unlink(file);
3909 }
3911 static enum request
3912 tree_request(struct view *view, enum request request, struct line *line)
3913 {
3914 enum open_flags flags;
3915 struct tree_entry *entry = line->data;
3917 switch (request) {
3918 case REQ_VIEW_BLAME:
3919 if (line->type != LINE_TREE_FILE) {
3920 report("Blame only supported for files");
3921 return REQ_NONE;
3922 }
3924 string_copy(opt_ref, view->vid);
3925 return request;
3927 case REQ_EDIT:
3928 if (line->type != LINE_TREE_FILE) {
3929 report("Edit only supported for files");
3930 } else if (!is_head_commit(view->vid)) {
3931 open_blob_editor(entry->id);
3932 } else {
3933 open_editor(opt_file);
3934 }
3935 return REQ_NONE;
3937 case REQ_TOGGLE_SORT_FIELD:
3938 case REQ_TOGGLE_SORT_ORDER:
3939 sort_view(view, request, &tree_sort_state, tree_compare);
3940 return REQ_NONE;
3942 case REQ_PARENT:
3943 if (!*opt_path) {
3944 /* quit view if at top of tree */
3945 return REQ_VIEW_CLOSE;
3946 }
3947 /* fake 'cd ..' */
3948 line = &view->line[1];
3949 break;
3951 case REQ_ENTER:
3952 break;
3954 default:
3955 return request;
3956 }
3958 /* Cleanup the stack if the tree view is at a different tree. */
3959 while (!*opt_path && tree_stack)
3960 pop_tree_stack_entry();
3962 switch (line->type) {
3963 case LINE_TREE_DIR:
3964 /* Depending on whether it is a subdirectory or parent link
3965 * mangle the path buffer. */
3966 if (line == &view->line[1] && *opt_path) {
3967 pop_tree_stack_entry();
3969 } else {
3970 const char *basename = tree_path(line);
3972 push_tree_stack_entry(basename, view->lineno);
3973 }
3975 /* Trees and subtrees share the same ID, so they are not not
3976 * unique like blobs. */
3977 flags = OPEN_RELOAD;
3978 request = REQ_VIEW_TREE;
3979 break;
3981 case LINE_TREE_FILE:
3982 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3983 request = REQ_VIEW_BLOB;
3984 break;
3986 default:
3987 return REQ_NONE;
3988 }
3990 open_view(view, request, flags);
3991 if (request == REQ_VIEW_TREE)
3992 view->lineno = tree_lineno;
3994 return REQ_NONE;
3995 }
3997 static bool
3998 tree_grep(struct view *view, struct line *line)
3999 {
4000 struct tree_entry *entry = line->data;
4001 const char *text[] = {
4002 entry->name,
4003 opt_author ? entry->author : "",
4004 mkdate(&entry->time, opt_date),
4005 NULL
4006 };
4008 return grep_text(view, text);
4009 }
4011 static void
4012 tree_select(struct view *view, struct line *line)
4013 {
4014 struct tree_entry *entry = line->data;
4016 if (line->type == LINE_TREE_FILE) {
4017 string_copy_rev(ref_blob, entry->id);
4018 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4020 } else if (line->type != LINE_TREE_DIR) {
4021 return;
4022 }
4024 string_copy_rev(view->ref, entry->id);
4025 }
4027 static bool
4028 tree_open(struct view *view, enum open_flags flags)
4029 {
4030 static const char *tree_argv[] = {
4031 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4032 };
4034 if (view->lines == 0 && opt_prefix[0]) {
4035 char *pos = opt_prefix;
4037 while (pos && *pos) {
4038 char *end = strchr(pos, '/');
4040 if (end)
4041 *end = 0;
4042 push_tree_stack_entry(pos, 0);
4043 pos = end;
4044 if (end) {
4045 *end = '/';
4046 pos++;
4047 }
4048 }
4050 } else if (strcmp(view->vid, view->id)) {
4051 opt_path[0] = 0;
4052 }
4054 return begin_update(view, opt_cdup, tree_argv, flags);
4055 }
4057 static struct view_ops tree_ops = {
4058 "file",
4059 tree_open,
4060 tree_read,
4061 tree_draw,
4062 tree_request,
4063 tree_grep,
4064 tree_select,
4065 };
4067 static bool
4068 blob_open(struct view *view, enum open_flags flags)
4069 {
4070 static const char *blob_argv[] = {
4071 "git", "cat-file", "blob", "%(blob)", NULL
4072 };
4074 return begin_update(view, NULL, blob_argv, flags);
4075 }
4077 static bool
4078 blob_read(struct view *view, char *line)
4079 {
4080 if (!line)
4081 return TRUE;
4082 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4083 }
4085 static enum request
4086 blob_request(struct view *view, enum request request, struct line *line)
4087 {
4088 switch (request) {
4089 case REQ_EDIT:
4090 open_blob_editor(view->vid);
4091 return REQ_NONE;
4092 default:
4093 return pager_request(view, request, line);
4094 }
4095 }
4097 static struct view_ops blob_ops = {
4098 "line",
4099 blob_open,
4100 blob_read,
4101 pager_draw,
4102 blob_request,
4103 pager_grep,
4104 pager_select,
4105 };
4107 /*
4108 * Blame backend
4109 *
4110 * Loading the blame view is a two phase job:
4111 *
4112 * 1. File content is read either using opt_file from the
4113 * filesystem or using git-cat-file.
4114 * 2. Then blame information is incrementally added by
4115 * reading output from git-blame.
4116 */
4118 struct blame_commit {
4119 char id[SIZEOF_REV]; /* SHA1 ID. */
4120 char title[128]; /* First line of the commit message. */
4121 const char *author; /* Author of the commit. */
4122 struct time time; /* Date from the author ident. */
4123 char filename[128]; /* Name of file. */
4124 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4125 char parent_filename[128]; /* Parent/previous name of file. */
4126 };
4128 struct blame {
4129 struct blame_commit *commit;
4130 unsigned long lineno;
4131 char text[1];
4132 };
4134 static bool
4135 blame_open(struct view *view, enum open_flags flags)
4136 {
4137 const char *file_argv[] = { opt_cdup, opt_file , NULL };
4138 char path[SIZEOF_STR];
4139 size_t i;
4141 if (!view->prev && *opt_prefix) {
4142 string_copy(path, opt_file);
4143 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4144 return FALSE;
4145 }
4147 if (*opt_ref || !begin_update(view, opt_cdup, file_argv, flags)) {
4148 const char *blame_cat_file_argv[] = {
4149 "git", "cat-file", "blob", path, NULL
4150 };
4152 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4153 !begin_update(view, opt_cdup, blame_cat_file_argv, flags))
4154 return FALSE;
4155 }
4157 /* First pass: remove multiple references to the same commit. */
4158 for (i = 0; i < view->lines; i++) {
4159 struct blame *blame = view->line[i].data;
4161 if (blame->commit && blame->commit->id[0])
4162 blame->commit->id[0] = 0;
4163 else
4164 blame->commit = NULL;
4165 }
4167 /* Second pass: free existing references. */
4168 for (i = 0; i < view->lines; i++) {
4169 struct blame *blame = view->line[i].data;
4171 if (blame->commit)
4172 free(blame->commit);
4173 }
4175 string_format(view->vid, "%s:%s", opt_ref, opt_file);
4176 string_format(view->ref, "%s ...", opt_file);
4178 return TRUE;
4179 }
4181 static struct blame_commit *
4182 get_blame_commit(struct view *view, const char *id)
4183 {
4184 size_t i;
4186 for (i = 0; i < view->lines; i++) {
4187 struct blame *blame = view->line[i].data;
4189 if (!blame->commit)
4190 continue;
4192 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4193 return blame->commit;
4194 }
4196 {
4197 struct blame_commit *commit = calloc(1, sizeof(*commit));
4199 if (commit)
4200 string_ncopy(commit->id, id, SIZEOF_REV);
4201 return commit;
4202 }
4203 }
4205 static bool
4206 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4207 {
4208 const char *pos = *posref;
4210 *posref = NULL;
4211 pos = strchr(pos + 1, ' ');
4212 if (!pos || !isdigit(pos[1]))
4213 return FALSE;
4214 *number = atoi(pos + 1);
4215 if (*number < min || *number > max)
4216 return FALSE;
4218 *posref = pos;
4219 return TRUE;
4220 }
4222 static struct blame_commit *
4223 parse_blame_commit(struct view *view, const char *text, int *blamed)
4224 {
4225 struct blame_commit *commit;
4226 struct blame *blame;
4227 const char *pos = text + SIZEOF_REV - 2;
4228 size_t orig_lineno = 0;
4229 size_t lineno;
4230 size_t group;
4232 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4233 return NULL;
4235 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4236 !parse_number(&pos, &lineno, 1, view->lines) ||
4237 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4238 return NULL;
4240 commit = get_blame_commit(view, text);
4241 if (!commit)
4242 return NULL;
4244 *blamed += group;
4245 while (group--) {
4246 struct line *line = &view->line[lineno + group - 1];
4248 blame = line->data;
4249 blame->commit = commit;
4250 blame->lineno = orig_lineno + group - 1;
4251 line->dirty = 1;
4252 }
4254 return commit;
4255 }
4257 static bool
4258 blame_read_file(struct view *view, const char *line, bool *read_file)
4259 {
4260 if (!line) {
4261 const char *blame_argv[] = {
4262 "git", "blame", "%(blameargs)", "--incremental",
4263 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4264 };
4266 if (view->lines == 0 && !view->prev)
4267 die("No blame exist for %s", view->vid);
4269 if (view->lines == 0 || !begin_update(view, opt_cdup, blame_argv, OPEN_EXTRA)) {
4270 report("Failed to load blame data");
4271 return TRUE;
4272 }
4274 *read_file = FALSE;
4275 return FALSE;
4277 } else {
4278 size_t linelen = strlen(line);
4279 struct blame *blame = malloc(sizeof(*blame) + linelen);
4281 if (!blame)
4282 return FALSE;
4284 blame->commit = NULL;
4285 strncpy(blame->text, line, linelen);
4286 blame->text[linelen] = 0;
4287 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4288 }
4289 }
4291 static bool
4292 match_blame_header(const char *name, char **line)
4293 {
4294 size_t namelen = strlen(name);
4295 bool matched = !strncmp(name, *line, namelen);
4297 if (matched)
4298 *line += namelen;
4300 return matched;
4301 }
4303 static bool
4304 blame_read(struct view *view, char *line)
4305 {
4306 static struct blame_commit *commit = NULL;
4307 static int blamed = 0;
4308 static bool read_file = TRUE;
4310 if (read_file)
4311 return blame_read_file(view, line, &read_file);
4313 if (!line) {
4314 /* Reset all! */
4315 commit = NULL;
4316 blamed = 0;
4317 read_file = TRUE;
4318 string_format(view->ref, "%s", view->vid);
4319 if (view_is_displayed(view)) {
4320 update_view_title(view);
4321 redraw_view_from(view, 0);
4322 }
4323 return TRUE;
4324 }
4326 if (!commit) {
4327 commit = parse_blame_commit(view, line, &blamed);
4328 string_format(view->ref, "%s %2d%%", view->vid,
4329 view->lines ? blamed * 100 / view->lines : 0);
4331 } else if (match_blame_header("author ", &line)) {
4332 commit->author = get_author(line);
4334 } else if (match_blame_header("author-time ", &line)) {
4335 parse_timesec(&commit->time, line);
4337 } else if (match_blame_header("author-tz ", &line)) {
4338 parse_timezone(&commit->time, line);
4340 } else if (match_blame_header("summary ", &line)) {
4341 string_ncopy(commit->title, line, strlen(line));
4343 } else if (match_blame_header("previous ", &line)) {
4344 if (strlen(line) <= SIZEOF_REV)
4345 return FALSE;
4346 string_copy_rev(commit->parent_id, line);
4347 line += SIZEOF_REV;
4348 string_ncopy(commit->parent_filename, line, strlen(line));
4350 } else if (match_blame_header("filename ", &line)) {
4351 string_ncopy(commit->filename, line, strlen(line));
4352 commit = NULL;
4353 }
4355 return TRUE;
4356 }
4358 static bool
4359 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4360 {
4361 struct blame *blame = line->data;
4362 struct time *time = NULL;
4363 const char *id = NULL, *author = NULL;
4365 if (blame->commit && *blame->commit->filename) {
4366 id = blame->commit->id;
4367 author = blame->commit->author;
4368 time = &blame->commit->time;
4369 }
4371 if (draw_date(view, time))
4372 return TRUE;
4374 if (draw_author(view, author))
4375 return TRUE;
4377 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4378 return TRUE;
4380 if (draw_lineno(view, lineno))
4381 return TRUE;
4383 draw_text(view, LINE_DEFAULT, blame->text);
4384 return TRUE;
4385 }
4387 static bool
4388 check_blame_commit(struct blame *blame, bool check_null_id)
4389 {
4390 if (!blame->commit)
4391 report("Commit data not loaded yet");
4392 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4393 report("No commit exist for the selected line");
4394 else
4395 return TRUE;
4396 return FALSE;
4397 }
4399 static void
4400 setup_blame_parent_line(struct view *view, struct blame *blame)
4401 {
4402 char from[SIZEOF_REF + SIZEOF_STR];
4403 char to[SIZEOF_REF + SIZEOF_STR];
4404 const char *diff_tree_argv[] = {
4405 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4406 "-U0", from, to, "--", NULL
4407 };
4408 struct io io;
4409 int parent_lineno = -1;
4410 int blamed_lineno = -1;
4411 char *line;
4413 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4414 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4415 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4416 return;
4418 while ((line = io_get(&io, '\n', TRUE))) {
4419 if (*line == '@') {
4420 char *pos = strchr(line, '+');
4422 parent_lineno = atoi(line + 4);
4423 if (pos)
4424 blamed_lineno = atoi(pos + 1);
4426 } else if (*line == '+' && parent_lineno != -1) {
4427 if (blame->lineno == blamed_lineno - 1 &&
4428 !strcmp(blame->text, line + 1)) {
4429 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4430 break;
4431 }
4432 blamed_lineno++;
4433 }
4434 }
4436 io_done(&io);
4437 }
4439 static enum request
4440 blame_request(struct view *view, enum request request, struct line *line)
4441 {
4442 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4443 struct blame *blame = line->data;
4445 switch (request) {
4446 case REQ_VIEW_BLAME:
4447 if (check_blame_commit(blame, TRUE)) {
4448 string_copy(opt_ref, blame->commit->id);
4449 string_copy(opt_file, blame->commit->filename);
4450 if (blame->lineno)
4451 view->lineno = blame->lineno;
4452 refresh_view(view);
4453 }
4454 break;
4456 case REQ_PARENT:
4457 if (!check_blame_commit(blame, TRUE))
4458 break;
4459 if (!*blame->commit->parent_id) {
4460 report("The selected commit has no parents");
4461 } else {
4462 string_copy_rev(opt_ref, blame->commit->parent_id);
4463 string_copy(opt_file, blame->commit->parent_filename);
4464 setup_blame_parent_line(view, blame);
4465 refresh_view(view);
4466 }
4467 break;
4469 case REQ_ENTER:
4470 if (!check_blame_commit(blame, FALSE))
4471 break;
4473 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4474 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4475 break;
4477 if (!strcmp(blame->commit->id, NULL_ID)) {
4478 struct view *diff = VIEW(REQ_VIEW_DIFF);
4479 const char *diff_index_argv[] = {
4480 "git", "diff-index", "--root", "--patch-with-stat",
4481 "-C", "-M", "HEAD", "--", view->vid, NULL
4482 };
4484 if (!*blame->commit->parent_id) {
4485 diff_index_argv[1] = "diff";
4486 diff_index_argv[2] = "--no-color";
4487 diff_index_argv[6] = "--";
4488 diff_index_argv[7] = "/dev/null";
4489 }
4491 open_argv(view, diff, diff_index_argv, NULL, flags);
4492 } else {
4493 open_view(view, REQ_VIEW_DIFF, flags);
4494 }
4495 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4496 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4497 break;
4499 default:
4500 return request;
4501 }
4503 return REQ_NONE;
4504 }
4506 static bool
4507 blame_grep(struct view *view, struct line *line)
4508 {
4509 struct blame *blame = line->data;
4510 struct blame_commit *commit = blame->commit;
4511 const char *text[] = {
4512 blame->text,
4513 commit ? commit->title : "",
4514 commit ? commit->id : "",
4515 commit && opt_author ? commit->author : "",
4516 commit ? mkdate(&commit->time, opt_date) : "",
4517 NULL
4518 };
4520 return grep_text(view, text);
4521 }
4523 static void
4524 blame_select(struct view *view, struct line *line)
4525 {
4526 struct blame *blame = line->data;
4527 struct blame_commit *commit = blame->commit;
4529 if (!commit)
4530 return;
4532 if (!strcmp(commit->id, NULL_ID))
4533 string_ncopy(ref_commit, "HEAD", 4);
4534 else
4535 string_copy_rev(ref_commit, commit->id);
4536 }
4538 static struct view_ops blame_ops = {
4539 "line",
4540 blame_open,
4541 blame_read,
4542 blame_draw,
4543 blame_request,
4544 blame_grep,
4545 blame_select,
4546 };
4548 /*
4549 * Branch backend
4550 */
4552 struct branch {
4553 const char *author; /* Author of the last commit. */
4554 struct time time; /* Date of the last activity. */
4555 const struct ref *ref; /* Name and commit ID information. */
4556 };
4558 static const struct ref branch_all;
4560 static const enum sort_field branch_sort_fields[] = {
4561 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4562 };
4563 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4565 static int
4566 branch_compare(const void *l1, const void *l2)
4567 {
4568 const struct branch *branch1 = ((const struct line *) l1)->data;
4569 const struct branch *branch2 = ((const struct line *) l2)->data;
4571 switch (get_sort_field(branch_sort_state)) {
4572 case ORDERBY_DATE:
4573 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4575 case ORDERBY_AUTHOR:
4576 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4578 case ORDERBY_NAME:
4579 default:
4580 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4581 }
4582 }
4584 static bool
4585 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4586 {
4587 struct branch *branch = line->data;
4588 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4590 if (draw_date(view, &branch->time))
4591 return TRUE;
4593 if (draw_author(view, branch->author))
4594 return TRUE;
4596 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4597 return TRUE;
4598 }
4600 static enum request
4601 branch_request(struct view *view, enum request request, struct line *line)
4602 {
4603 struct branch *branch = line->data;
4605 switch (request) {
4606 case REQ_REFRESH:
4607 load_refs();
4608 refresh_view(view);
4609 return REQ_NONE;
4611 case REQ_TOGGLE_SORT_FIELD:
4612 case REQ_TOGGLE_SORT_ORDER:
4613 sort_view(view, request, &branch_sort_state, branch_compare);
4614 return REQ_NONE;
4616 case REQ_ENTER:
4617 {
4618 const struct ref *ref = branch->ref;
4619 const char *all_branches_argv[] = {
4620 "git", "log", "--no-color", "--pretty=raw", "--parents",
4621 "--topo-order",
4622 ref == &branch_all ? "--all" : ref->name, NULL
4623 };
4624 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4626 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
4627 return REQ_NONE;
4628 }
4629 default:
4630 return request;
4631 }
4632 }
4634 static bool
4635 branch_read(struct view *view, char *line)
4636 {
4637 static char id[SIZEOF_REV];
4638 struct branch *reference;
4639 size_t i;
4641 if (!line)
4642 return TRUE;
4644 switch (get_line_type(line)) {
4645 case LINE_COMMIT:
4646 string_copy_rev(id, line + STRING_SIZE("commit "));
4647 return TRUE;
4649 case LINE_AUTHOR:
4650 for (i = 0, reference = NULL; i < view->lines; i++) {
4651 struct branch *branch = view->line[i].data;
4653 if (strcmp(branch->ref->id, id))
4654 continue;
4656 view->line[i].dirty = TRUE;
4657 if (reference) {
4658 branch->author = reference->author;
4659 branch->time = reference->time;
4660 continue;
4661 }
4663 parse_author_line(line + STRING_SIZE("author "),
4664 &branch->author, &branch->time);
4665 reference = branch;
4666 }
4667 return TRUE;
4669 default:
4670 return TRUE;
4671 }
4673 }
4675 static bool
4676 branch_open_visitor(void *data, const struct ref *ref)
4677 {
4678 struct view *view = data;
4679 struct branch *branch;
4681 if (ref->tag || ref->ltag || ref->remote)
4682 return TRUE;
4684 branch = calloc(1, sizeof(*branch));
4685 if (!branch)
4686 return FALSE;
4688 branch->ref = ref;
4689 return !!add_line_data(view, branch, LINE_DEFAULT);
4690 }
4692 static bool
4693 branch_open(struct view *view, enum open_flags flags)
4694 {
4695 const char *branch_log[] = {
4696 "git", "log", "--no-color", "--pretty=raw",
4697 "--simplify-by-decoration", "--all", NULL
4698 };
4700 if (!begin_update(view, NULL, branch_log, flags)) {
4701 report("Failed to load branch data");
4702 return TRUE;
4703 }
4705 branch_open_visitor(view, &branch_all);
4706 foreach_ref(branch_open_visitor, view);
4707 view->p_restore = TRUE;
4709 return TRUE;
4710 }
4712 static bool
4713 branch_grep(struct view *view, struct line *line)
4714 {
4715 struct branch *branch = line->data;
4716 const char *text[] = {
4717 branch->ref->name,
4718 branch->author,
4719 NULL
4720 };
4722 return grep_text(view, text);
4723 }
4725 static void
4726 branch_select(struct view *view, struct line *line)
4727 {
4728 struct branch *branch = line->data;
4730 string_copy_rev(view->ref, branch->ref->id);
4731 string_copy_rev(ref_commit, branch->ref->id);
4732 string_copy_rev(ref_head, branch->ref->id);
4733 string_copy_rev(ref_branch, branch->ref->name);
4734 }
4736 static struct view_ops branch_ops = {
4737 "branch",
4738 branch_open,
4739 branch_read,
4740 branch_draw,
4741 branch_request,
4742 branch_grep,
4743 branch_select,
4744 };
4746 /*
4747 * Status backend
4748 */
4750 struct status {
4751 char status;
4752 struct {
4753 mode_t mode;
4754 char rev[SIZEOF_REV];
4755 char name[SIZEOF_STR];
4756 } old;
4757 struct {
4758 mode_t mode;
4759 char rev[SIZEOF_REV];
4760 char name[SIZEOF_STR];
4761 } new;
4762 };
4764 static char status_onbranch[SIZEOF_STR];
4765 static struct status stage_status;
4766 static enum line_type stage_line_type;
4767 static size_t stage_chunks;
4768 static int *stage_chunk;
4770 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4772 /* This should work even for the "On branch" line. */
4773 static inline bool
4774 status_has_none(struct view *view, struct line *line)
4775 {
4776 return line < view->line + view->lines && !line[1].data;
4777 }
4779 /* Get fields from the diff line:
4780 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4781 */
4782 static inline bool
4783 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4784 {
4785 const char *old_mode = buf + 1;
4786 const char *new_mode = buf + 8;
4787 const char *old_rev = buf + 15;
4788 const char *new_rev = buf + 56;
4789 const char *status = buf + 97;
4791 if (bufsize < 98 ||
4792 old_mode[-1] != ':' ||
4793 new_mode[-1] != ' ' ||
4794 old_rev[-1] != ' ' ||
4795 new_rev[-1] != ' ' ||
4796 status[-1] != ' ')
4797 return FALSE;
4799 file->status = *status;
4801 string_copy_rev(file->old.rev, old_rev);
4802 string_copy_rev(file->new.rev, new_rev);
4804 file->old.mode = strtoul(old_mode, NULL, 8);
4805 file->new.mode = strtoul(new_mode, NULL, 8);
4807 file->old.name[0] = file->new.name[0] = 0;
4809 return TRUE;
4810 }
4812 static bool
4813 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4814 {
4815 struct status *unmerged = NULL;
4816 char *buf;
4817 struct io io;
4819 if (!io_run(&io, IO_RD, opt_cdup, argv))
4820 return FALSE;
4822 add_line_data(view, NULL, type);
4824 while ((buf = io_get(&io, 0, TRUE))) {
4825 struct status *file = unmerged;
4827 if (!file) {
4828 file = calloc(1, sizeof(*file));
4829 if (!file || !add_line_data(view, file, type))
4830 goto error_out;
4831 }
4833 /* Parse diff info part. */
4834 if (status) {
4835 file->status = status;
4836 if (status == 'A')
4837 string_copy(file->old.rev, NULL_ID);
4839 } else if (!file->status || file == unmerged) {
4840 if (!status_get_diff(file, buf, strlen(buf)))
4841 goto error_out;
4843 buf = io_get(&io, 0, TRUE);
4844 if (!buf)
4845 break;
4847 /* Collapse all modified entries that follow an
4848 * associated unmerged entry. */
4849 if (unmerged == file) {
4850 unmerged->status = 'U';
4851 unmerged = NULL;
4852 } else if (file->status == 'U') {
4853 unmerged = file;
4854 }
4855 }
4857 /* Grab the old name for rename/copy. */
4858 if (!*file->old.name &&
4859 (file->status == 'R' || file->status == 'C')) {
4860 string_ncopy(file->old.name, buf, strlen(buf));
4862 buf = io_get(&io, 0, TRUE);
4863 if (!buf)
4864 break;
4865 }
4867 /* git-ls-files just delivers a NUL separated list of
4868 * file names similar to the second half of the
4869 * git-diff-* output. */
4870 string_ncopy(file->new.name, buf, strlen(buf));
4871 if (!*file->old.name)
4872 string_copy(file->old.name, file->new.name);
4873 file = NULL;
4874 }
4876 if (io_error(&io)) {
4877 error_out:
4878 io_done(&io);
4879 return FALSE;
4880 }
4882 if (!view->line[view->lines - 1].data)
4883 add_line_data(view, NULL, LINE_STAT_NONE);
4885 io_done(&io);
4886 return TRUE;
4887 }
4889 /* Don't show unmerged entries in the staged section. */
4890 static const char *status_diff_index_argv[] = {
4891 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4892 "--cached", "-M", "HEAD", NULL
4893 };
4895 static const char *status_diff_files_argv[] = {
4896 "git", "diff-files", "-z", NULL
4897 };
4899 static const char *status_list_other_argv[] = {
4900 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4901 };
4903 static const char *status_list_no_head_argv[] = {
4904 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4905 };
4907 static const char *update_index_argv[] = {
4908 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4909 };
4911 /* Restore the previous line number to stay in the context or select a
4912 * line with something that can be updated. */
4913 static void
4914 status_restore(struct view *view)
4915 {
4916 if (view->p_lineno >= view->lines)
4917 view->p_lineno = view->lines - 1;
4918 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4919 view->p_lineno++;
4920 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4921 view->p_lineno--;
4923 /* If the above fails, always skip the "On branch" line. */
4924 if (view->p_lineno < view->lines)
4925 view->lineno = view->p_lineno;
4926 else
4927 view->lineno = 1;
4929 if (view->lineno < view->offset)
4930 view->offset = view->lineno;
4931 else if (view->offset + view->height <= view->lineno)
4932 view->offset = view->lineno - view->height + 1;
4934 view->p_restore = FALSE;
4935 }
4937 static void
4938 status_update_onbranch(void)
4939 {
4940 static const char *paths[][2] = {
4941 { "rebase-apply/rebasing", "Rebasing" },
4942 { "rebase-apply/applying", "Applying mailbox" },
4943 { "rebase-apply/", "Rebasing mailbox" },
4944 { "rebase-merge/interactive", "Interactive rebase" },
4945 { "rebase-merge/", "Rebase merge" },
4946 { "MERGE_HEAD", "Merging" },
4947 { "BISECT_LOG", "Bisecting" },
4948 { "HEAD", "On branch" },
4949 };
4950 char buf[SIZEOF_STR];
4951 struct stat stat;
4952 int i;
4954 if (is_initial_commit()) {
4955 string_copy(status_onbranch, "Initial commit");
4956 return;
4957 }
4959 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4960 char *head = opt_head;
4962 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4963 lstat(buf, &stat) < 0)
4964 continue;
4966 if (!*opt_head) {
4967 struct io io;
4969 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4970 io_read_buf(&io, buf, sizeof(buf))) {
4971 head = buf;
4972 if (!prefixcmp(head, "refs/heads/"))
4973 head += STRING_SIZE("refs/heads/");
4974 }
4975 }
4977 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4978 string_copy(status_onbranch, opt_head);
4979 return;
4980 }
4982 string_copy(status_onbranch, "Not currently on any branch");
4983 }
4985 /* First parse staged info using git-diff-index(1), then parse unstaged
4986 * info using git-diff-files(1), and finally untracked files using
4987 * git-ls-files(1). */
4988 static bool
4989 status_open(struct view *view, enum open_flags flags)
4990 {
4991 reset_view(view);
4993 add_line_data(view, NULL, LINE_STAT_HEAD);
4994 status_update_onbranch();
4996 io_run_bg(update_index_argv);
4998 if (is_initial_commit()) {
4999 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
5000 return FALSE;
5001 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
5002 return FALSE;
5003 }
5005 if (!opt_untracked_dirs_content)
5006 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
5008 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
5009 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
5010 return FALSE;
5012 /* Restore the exact position or use the specialized restore
5013 * mode? */
5014 if (!view->p_restore)
5015 status_restore(view);
5016 return TRUE;
5017 }
5019 static bool
5020 status_draw(struct view *view, struct line *line, unsigned int lineno)
5021 {
5022 struct status *status = line->data;
5023 enum line_type type;
5024 const char *text;
5026 if (!status) {
5027 switch (line->type) {
5028 case LINE_STAT_STAGED:
5029 type = LINE_STAT_SECTION;
5030 text = "Changes to be committed:";
5031 break;
5033 case LINE_STAT_UNSTAGED:
5034 type = LINE_STAT_SECTION;
5035 text = "Changed but not updated:";
5036 break;
5038 case LINE_STAT_UNTRACKED:
5039 type = LINE_STAT_SECTION;
5040 text = "Untracked files:";
5041 break;
5043 case LINE_STAT_NONE:
5044 type = LINE_DEFAULT;
5045 text = " (no files)";
5046 break;
5048 case LINE_STAT_HEAD:
5049 type = LINE_STAT_HEAD;
5050 text = status_onbranch;
5051 break;
5053 default:
5054 return FALSE;
5055 }
5056 } else {
5057 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5059 buf[0] = status->status;
5060 if (draw_text(view, line->type, buf))
5061 return TRUE;
5062 type = LINE_DEFAULT;
5063 text = status->new.name;
5064 }
5066 draw_text(view, type, text);
5067 return TRUE;
5068 }
5070 static enum request
5071 status_enter(struct view *view, struct line *line)
5072 {
5073 struct status *status = line->data;
5074 const char *oldpath = status ? status->old.name : NULL;
5075 /* Diffs for unmerged entries are empty when passing the new
5076 * path, so leave it empty. */
5077 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5078 const char *info;
5079 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5080 struct view *stage = VIEW(REQ_VIEW_STAGE);
5082 if (line->type == LINE_STAT_NONE ||
5083 (!status && line[1].type == LINE_STAT_NONE)) {
5084 report("No file to diff");
5085 return REQ_NONE;
5086 }
5088 switch (line->type) {
5089 case LINE_STAT_STAGED:
5090 if (is_initial_commit()) {
5091 const char *no_head_diff_argv[] = {
5092 "git", "diff", "--no-color", "--patch-with-stat",
5093 "--", "/dev/null", newpath, NULL
5094 };
5096 open_argv(view, stage, no_head_diff_argv, opt_cdup, flags);
5097 } else {
5098 const char *index_show_argv[] = {
5099 "git", "diff-index", "--root", "--patch-with-stat",
5100 "-C", "-M", "--cached", "HEAD", "--",
5101 oldpath, newpath, NULL
5102 };
5104 open_argv(view, stage, index_show_argv, opt_cdup, flags);
5105 }
5107 if (status)
5108 info = "Staged changes to %s";
5109 else
5110 info = "Staged changes";
5111 break;
5113 case LINE_STAT_UNSTAGED:
5114 {
5115 const char *files_show_argv[] = {
5116 "git", "diff-files", "--root", "--patch-with-stat",
5117 "-C", "-M", "--", oldpath, newpath, NULL
5118 };
5120 open_argv(view, stage, files_show_argv, opt_cdup, flags);
5121 if (status)
5122 info = "Unstaged changes to %s";
5123 else
5124 info = "Unstaged changes";
5125 break;
5126 }
5127 case LINE_STAT_UNTRACKED:
5128 if (!newpath) {
5129 report("No file to show");
5130 return REQ_NONE;
5131 }
5133 if (!suffixcmp(status->new.name, -1, "/")) {
5134 report("Cannot display a directory");
5135 return REQ_NONE;
5136 }
5138 open_file(view, stage, newpath, flags);
5139 info = "Untracked file %s";
5140 break;
5142 case LINE_STAT_HEAD:
5143 return REQ_NONE;
5145 default:
5146 die("line type %d not handled in switch", line->type);
5147 }
5149 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5150 if (status) {
5151 stage_status = *status;
5152 } else {
5153 memset(&stage_status, 0, sizeof(stage_status));
5154 }
5156 stage_line_type = line->type;
5157 stage_chunks = 0;
5158 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5159 }
5161 return REQ_NONE;
5162 }
5164 static bool
5165 status_exists(struct status *status, enum line_type type)
5166 {
5167 struct view *view = VIEW(REQ_VIEW_STATUS);
5168 unsigned long lineno;
5170 for (lineno = 0; lineno < view->lines; lineno++) {
5171 struct line *line = &view->line[lineno];
5172 struct status *pos = line->data;
5174 if (line->type != type)
5175 continue;
5176 if (!pos && (!status || !status->status) && line[1].data) {
5177 select_view_line(view, lineno);
5178 return TRUE;
5179 }
5180 if (pos && !strcmp(status->new.name, pos->new.name)) {
5181 select_view_line(view, lineno);
5182 return TRUE;
5183 }
5184 }
5186 return FALSE;
5187 }
5190 static bool
5191 status_update_prepare(struct io *io, enum line_type type)
5192 {
5193 const char *staged_argv[] = {
5194 "git", "update-index", "-z", "--index-info", NULL
5195 };
5196 const char *others_argv[] = {
5197 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5198 };
5200 switch (type) {
5201 case LINE_STAT_STAGED:
5202 return io_run(io, IO_WR, opt_cdup, staged_argv);
5204 case LINE_STAT_UNSTAGED:
5205 case LINE_STAT_UNTRACKED:
5206 return io_run(io, IO_WR, opt_cdup, others_argv);
5208 default:
5209 die("line type %d not handled in switch", type);
5210 return FALSE;
5211 }
5212 }
5214 static bool
5215 status_update_write(struct io *io, struct status *status, enum line_type type)
5216 {
5217 char buf[SIZEOF_STR];
5218 size_t bufsize = 0;
5220 switch (type) {
5221 case LINE_STAT_STAGED:
5222 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5223 status->old.mode,
5224 status->old.rev,
5225 status->old.name, 0))
5226 return FALSE;
5227 break;
5229 case LINE_STAT_UNSTAGED:
5230 case LINE_STAT_UNTRACKED:
5231 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5232 return FALSE;
5233 break;
5235 default:
5236 die("line type %d not handled in switch", type);
5237 }
5239 return io_write(io, buf, bufsize);
5240 }
5242 static bool
5243 status_update_file(struct status *status, enum line_type type)
5244 {
5245 struct io io;
5246 bool result;
5248 if (!status_update_prepare(&io, type))
5249 return FALSE;
5251 result = status_update_write(&io, status, type);
5252 return io_done(&io) && result;
5253 }
5255 static bool
5256 status_update_files(struct view *view, struct line *line)
5257 {
5258 char buf[sizeof(view->ref)];
5259 struct io io;
5260 bool result = TRUE;
5261 struct line *pos = view->line + view->lines;
5262 int files = 0;
5263 int file, done;
5264 int cursor_y = -1, cursor_x = -1;
5266 if (!status_update_prepare(&io, line->type))
5267 return FALSE;
5269 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5270 files++;
5272 string_copy(buf, view->ref);
5273 getsyx(cursor_y, cursor_x);
5274 for (file = 0, done = 5; result && file < files; line++, file++) {
5275 int almost_done = file * 100 / files;
5277 if (almost_done > done) {
5278 done = almost_done;
5279 string_format(view->ref, "updating file %u of %u (%d%% done)",
5280 file, files, done);
5281 update_view_title(view);
5282 setsyx(cursor_y, cursor_x);
5283 doupdate();
5284 }
5285 result = status_update_write(&io, line->data, line->type);
5286 }
5287 string_copy(view->ref, buf);
5289 return io_done(&io) && result;
5290 }
5292 static bool
5293 status_update(struct view *view)
5294 {
5295 struct line *line = &view->line[view->lineno];
5297 assert(view->lines);
5299 if (!line->data) {
5300 /* This should work even for the "On branch" line. */
5301 if (line < view->line + view->lines && !line[1].data) {
5302 report("Nothing to update");
5303 return FALSE;
5304 }
5306 if (!status_update_files(view, line + 1)) {
5307 report("Failed to update file status");
5308 return FALSE;
5309 }
5311 } else if (!status_update_file(line->data, line->type)) {
5312 report("Failed to update file status");
5313 return FALSE;
5314 }
5316 return TRUE;
5317 }
5319 static bool
5320 status_revert(struct status *status, enum line_type type, bool has_none)
5321 {
5322 if (!status || type != LINE_STAT_UNSTAGED) {
5323 if (type == LINE_STAT_STAGED) {
5324 report("Cannot revert changes to staged files");
5325 } else if (type == LINE_STAT_UNTRACKED) {
5326 report("Cannot revert changes to untracked files");
5327 } else if (has_none) {
5328 report("Nothing to revert");
5329 } else {
5330 report("Cannot revert changes to multiple files");
5331 }
5333 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5334 char mode[10] = "100644";
5335 const char *reset_argv[] = {
5336 "git", "update-index", "--cacheinfo", mode,
5337 status->old.rev, status->old.name, NULL
5338 };
5339 const char *checkout_argv[] = {
5340 "git", "checkout", "--", status->old.name, NULL
5341 };
5343 if (status->status == 'U') {
5344 string_format(mode, "%5o", status->old.mode);
5346 if (status->old.mode == 0 && status->new.mode == 0) {
5347 reset_argv[2] = "--force-remove";
5348 reset_argv[3] = status->old.name;
5349 reset_argv[4] = NULL;
5350 }
5352 if (!io_run_fg(reset_argv, opt_cdup))
5353 return FALSE;
5354 if (status->old.mode == 0 && status->new.mode == 0)
5355 return TRUE;
5356 }
5358 return io_run_fg(checkout_argv, opt_cdup);
5359 }
5361 return FALSE;
5362 }
5364 static enum request
5365 status_request(struct view *view, enum request request, struct line *line)
5366 {
5367 struct status *status = line->data;
5369 switch (request) {
5370 case REQ_STATUS_UPDATE:
5371 if (!status_update(view))
5372 return REQ_NONE;
5373 break;
5375 case REQ_STATUS_REVERT:
5376 if (!status_revert(status, line->type, status_has_none(view, line)))
5377 return REQ_NONE;
5378 break;
5380 case REQ_STATUS_MERGE:
5381 if (!status || status->status != 'U') {
5382 report("Merging only possible for files with unmerged status ('U').");
5383 return REQ_NONE;
5384 }
5385 open_mergetool(status->new.name);
5386 break;
5388 case REQ_EDIT:
5389 if (!status)
5390 return request;
5391 if (status->status == 'D') {
5392 report("File has been deleted.");
5393 return REQ_NONE;
5394 }
5396 open_editor(status->new.name);
5397 break;
5399 case REQ_VIEW_BLAME:
5400 if (status)
5401 opt_ref[0] = 0;
5402 return request;
5404 case REQ_ENTER:
5405 /* After returning the status view has been split to
5406 * show the stage view. No further reloading is
5407 * necessary. */
5408 return status_enter(view, line);
5410 case REQ_REFRESH:
5411 /* Simply reload the view. */
5412 break;
5414 default:
5415 return request;
5416 }
5418 refresh_view(view);
5420 return REQ_NONE;
5421 }
5423 static void
5424 status_select(struct view *view, struct line *line)
5425 {
5426 struct status *status = line->data;
5427 char file[SIZEOF_STR] = "all files";
5428 const char *text;
5429 const char *key;
5431 if (status && !string_format(file, "'%s'", status->new.name))
5432 return;
5434 if (!status && line[1].type == LINE_STAT_NONE)
5435 line++;
5437 switch (line->type) {
5438 case LINE_STAT_STAGED:
5439 text = "Press %s to unstage %s for commit";
5440 break;
5442 case LINE_STAT_UNSTAGED:
5443 text = "Press %s to stage %s for commit";
5444 break;
5446 case LINE_STAT_UNTRACKED:
5447 text = "Press %s to stage %s for addition";
5448 break;
5450 case LINE_STAT_HEAD:
5451 case LINE_STAT_NONE:
5452 text = "Nothing to update";
5453 break;
5455 default:
5456 die("line type %d not handled in switch", line->type);
5457 }
5459 if (status && status->status == 'U') {
5460 text = "Press %s to resolve conflict in %s";
5461 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5463 } else {
5464 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5465 }
5467 string_format(view->ref, text, key, file);
5468 if (status)
5469 string_copy(opt_file, status->new.name);
5470 }
5472 static bool
5473 status_grep(struct view *view, struct line *line)
5474 {
5475 struct status *status = line->data;
5477 if (status) {
5478 const char buf[2] = { status->status, 0 };
5479 const char *text[] = { status->new.name, buf, NULL };
5481 return grep_text(view, text);
5482 }
5484 return FALSE;
5485 }
5487 static struct view_ops status_ops = {
5488 "file",
5489 status_open,
5490 NULL,
5491 status_draw,
5492 status_request,
5493 status_grep,
5494 status_select,
5495 };
5498 static bool
5499 stage_diff_write(struct io *io, struct line *line, struct line *end)
5500 {
5501 while (line < end) {
5502 if (!io_write(io, line->data, strlen(line->data)) ||
5503 !io_write(io, "\n", 1))
5504 return FALSE;
5505 line++;
5506 if (line->type == LINE_DIFF_CHUNK ||
5507 line->type == LINE_DIFF_HEADER)
5508 break;
5509 }
5511 return TRUE;
5512 }
5514 static struct line *
5515 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5516 {
5517 for (; view->line < line; line--)
5518 if (line->type == type)
5519 return line;
5521 return NULL;
5522 }
5524 static bool
5525 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5526 {
5527 const char *apply_argv[SIZEOF_ARG] = {
5528 "git", "apply", "--whitespace=nowarn", NULL
5529 };
5530 struct line *diff_hdr;
5531 struct io io;
5532 int argc = 3;
5534 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5535 if (!diff_hdr)
5536 return FALSE;
5538 if (!revert)
5539 apply_argv[argc++] = "--cached";
5540 if (revert || stage_line_type == LINE_STAT_STAGED)
5541 apply_argv[argc++] = "-R";
5542 apply_argv[argc++] = "-";
5543 apply_argv[argc++] = NULL;
5544 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5545 return FALSE;
5547 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5548 !stage_diff_write(&io, chunk, view->line + view->lines))
5549 chunk = NULL;
5551 io_done(&io);
5552 io_run_bg(update_index_argv);
5554 return chunk ? TRUE : FALSE;
5555 }
5557 static bool
5558 stage_update(struct view *view, struct line *line)
5559 {
5560 struct line *chunk = NULL;
5562 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5563 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5565 if (chunk) {
5566 if (!stage_apply_chunk(view, chunk, FALSE)) {
5567 report("Failed to apply chunk");
5568 return FALSE;
5569 }
5571 } else if (!stage_status.status) {
5572 view = VIEW(REQ_VIEW_STATUS);
5574 for (line = view->line; line < view->line + view->lines; line++)
5575 if (line->type == stage_line_type)
5576 break;
5578 if (!status_update_files(view, line + 1)) {
5579 report("Failed to update files");
5580 return FALSE;
5581 }
5583 } else if (!status_update_file(&stage_status, stage_line_type)) {
5584 report("Failed to update file");
5585 return FALSE;
5586 }
5588 return TRUE;
5589 }
5591 static bool
5592 stage_revert(struct view *view, struct line *line)
5593 {
5594 struct line *chunk = NULL;
5596 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5597 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5599 if (chunk) {
5600 if (!prompt_yesno("Are you sure you want to revert changes?"))
5601 return FALSE;
5603 if (!stage_apply_chunk(view, chunk, TRUE)) {
5604 report("Failed to revert chunk");
5605 return FALSE;
5606 }
5607 return TRUE;
5609 } else {
5610 return status_revert(stage_status.status ? &stage_status : NULL,
5611 stage_line_type, FALSE);
5612 }
5613 }
5616 static void
5617 stage_next(struct view *view, struct line *line)
5618 {
5619 int i;
5621 if (!stage_chunks) {
5622 for (line = view->line; line < view->line + view->lines; line++) {
5623 if (line->type != LINE_DIFF_CHUNK)
5624 continue;
5626 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5627 report("Allocation failure");
5628 return;
5629 }
5631 stage_chunk[stage_chunks++] = line - view->line;
5632 }
5633 }
5635 for (i = 0; i < stage_chunks; i++) {
5636 if (stage_chunk[i] > view->lineno) {
5637 do_scroll_view(view, stage_chunk[i] - view->lineno);
5638 report("Chunk %d of %d", i + 1, stage_chunks);
5639 return;
5640 }
5641 }
5643 report("No next chunk found");
5644 }
5646 static enum request
5647 stage_request(struct view *view, enum request request, struct line *line)
5648 {
5649 switch (request) {
5650 case REQ_STATUS_UPDATE:
5651 if (!stage_update(view, line))
5652 return REQ_NONE;
5653 break;
5655 case REQ_STATUS_REVERT:
5656 if (!stage_revert(view, line))
5657 return REQ_NONE;
5658 break;
5660 case REQ_STAGE_NEXT:
5661 if (stage_line_type == LINE_STAT_UNTRACKED) {
5662 report("File is untracked; press %s to add",
5663 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5664 return REQ_NONE;
5665 }
5666 stage_next(view, line);
5667 return REQ_NONE;
5669 case REQ_EDIT:
5670 if (!stage_status.new.name[0])
5671 return request;
5672 if (stage_status.status == 'D') {
5673 report("File has been deleted.");
5674 return REQ_NONE;
5675 }
5677 open_editor(stage_status.new.name);
5678 break;
5680 case REQ_REFRESH:
5681 /* Reload everything ... */
5682 break;
5684 case REQ_VIEW_BLAME:
5685 if (stage_status.new.name[0]) {
5686 string_copy(opt_file, stage_status.new.name);
5687 opt_ref[0] = 0;
5688 }
5689 return request;
5691 case REQ_ENTER:
5692 return pager_request(view, request, line);
5694 default:
5695 return request;
5696 }
5698 refresh_view(view->parent);
5700 /* Check whether the staged entry still exists, and close the
5701 * stage view if it doesn't. */
5702 if (!status_exists(&stage_status, stage_line_type)) {
5703 status_restore(VIEW(REQ_VIEW_STATUS));
5704 return REQ_VIEW_CLOSE;
5705 }
5707 refresh_view(view);
5709 return REQ_NONE;
5710 }
5712 static struct view_ops stage_ops = {
5713 "line",
5714 view_open,
5715 pager_read,
5716 pager_draw,
5717 stage_request,
5718 pager_grep,
5719 pager_select,
5720 };
5723 /*
5724 * Revision graph
5725 */
5727 static const enum line_type graph_colors[] = {
5728 LINE_GRAPH_LINE_0,
5729 LINE_GRAPH_LINE_1,
5730 LINE_GRAPH_LINE_2,
5731 LINE_GRAPH_LINE_3,
5732 LINE_GRAPH_LINE_4,
5733 LINE_GRAPH_LINE_5,
5734 LINE_GRAPH_LINE_6,
5735 };
5737 static enum line_type get_graph_color(struct graph_symbol *symbol)
5738 {
5739 if (symbol->commit)
5740 return LINE_GRAPH_COMMIT;
5741 assert(symbol->color < ARRAY_SIZE(graph_colors));
5742 return graph_colors[symbol->color];
5743 }
5745 static bool
5746 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5747 {
5748 const char *chars = graph_symbol_to_utf8(symbol);
5750 return draw_text(view, color, chars + !!first);
5751 }
5753 static bool
5754 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5755 {
5756 const char *chars = graph_symbol_to_ascii(symbol);
5758 return draw_text(view, color, chars + !!first);
5759 }
5761 static bool
5762 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5763 {
5764 const chtype *chars = graph_symbol_to_chtype(symbol);
5766 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5767 }
5769 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5771 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5772 {
5773 static const draw_graph_fn fns[] = {
5774 draw_graph_ascii,
5775 draw_graph_chtype,
5776 draw_graph_utf8
5777 };
5778 draw_graph_fn fn = fns[opt_line_graphics];
5779 int i;
5781 for (i = 0; i < canvas->size; i++) {
5782 struct graph_symbol *symbol = &canvas->symbols[i];
5783 enum line_type color = get_graph_color(symbol);
5785 if (fn(view, symbol, color, i == 0))
5786 return TRUE;
5787 }
5789 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5790 }
5792 /*
5793 * Main view backend
5794 */
5796 struct commit {
5797 char id[SIZEOF_REV]; /* SHA1 ID. */
5798 char title[128]; /* First line of the commit message. */
5799 const char *author; /* Author of the commit. */
5800 struct time time; /* Date from the author ident. */
5801 struct ref_list *refs; /* Repository references. */
5802 struct graph_canvas graph; /* Ancestry chain graphics. */
5803 };
5805 static bool
5806 main_open(struct view *view, enum open_flags flags)
5807 {
5808 static const char *main_argv[] = {
5809 "git", "log", "--no-color", "--pretty=raw", "--parents",
5810 "--topo-order", "%(diffargs)", "%(revargs)",
5811 "--", "%(fileargs)", NULL
5812 };
5814 return begin_update(view, NULL, main_argv, flags);
5815 }
5817 static bool
5818 main_draw(struct view *view, struct line *line, unsigned int lineno)
5819 {
5820 struct commit *commit = line->data;
5822 if (!commit->author)
5823 return FALSE;
5825 if (draw_date(view, &commit->time))
5826 return TRUE;
5828 if (draw_author(view, commit->author))
5829 return TRUE;
5831 if (opt_rev_graph && draw_graph(view, &commit->graph))
5832 return TRUE;
5834 if (draw_refs(view, commit->refs))
5835 return TRUE;
5837 draw_text(view, LINE_DEFAULT, commit->title);
5838 return TRUE;
5839 }
5841 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5842 static bool
5843 main_read(struct view *view, char *line)
5844 {
5845 static struct graph graph;
5846 enum line_type type;
5847 struct commit *commit;
5849 if (!line) {
5850 if (!view->lines && !view->prev)
5851 die("No revisions match the given arguments.");
5852 if (view->lines > 0) {
5853 commit = view->line[view->lines - 1].data;
5854 view->line[view->lines - 1].dirty = 1;
5855 if (!commit->author) {
5856 view->lines--;
5857 free(commit);
5858 }
5859 }
5861 done_graph(&graph);
5862 return TRUE;
5863 }
5865 type = get_line_type(line);
5866 if (type == LINE_COMMIT) {
5867 bool is_boundary;
5869 commit = calloc(1, sizeof(struct commit));
5870 if (!commit)
5871 return FALSE;
5873 line += STRING_SIZE("commit ");
5874 is_boundary = *line == '-';
5875 if (is_boundary)
5876 line++;
5878 string_copy_rev(commit->id, line);
5879 commit->refs = get_ref_list(commit->id);
5880 add_line_data(view, commit, LINE_MAIN_COMMIT);
5881 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5882 return TRUE;
5883 }
5885 if (!view->lines)
5886 return TRUE;
5887 commit = view->line[view->lines - 1].data;
5889 switch (type) {
5890 case LINE_PARENT:
5891 if (!graph.has_parents)
5892 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5893 break;
5895 case LINE_AUTHOR:
5896 parse_author_line(line + STRING_SIZE("author "),
5897 &commit->author, &commit->time);
5898 graph_render_parents(&graph);
5899 break;
5901 default:
5902 /* Fill in the commit title if it has not already been set. */
5903 if (commit->title[0])
5904 break;
5906 /* Require titles to start with a non-space character at the
5907 * offset used by git log. */
5908 if (strncmp(line, " ", 4))
5909 break;
5910 line += 4;
5911 /* Well, if the title starts with a whitespace character,
5912 * try to be forgiving. Otherwise we end up with no title. */
5913 while (isspace(*line))
5914 line++;
5915 if (*line == '\0')
5916 break;
5917 /* FIXME: More graceful handling of titles; append "..." to
5918 * shortened titles, etc. */
5920 string_expand(commit->title, sizeof(commit->title), line, 1);
5921 view->line[view->lines - 1].dirty = 1;
5922 }
5924 return TRUE;
5925 }
5927 static enum request
5928 main_request(struct view *view, enum request request, struct line *line)
5929 {
5930 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5932 switch (request) {
5933 case REQ_ENTER:
5934 if (view_is_displayed(view) && display[0] != view)
5935 maximize_view(view, TRUE);
5936 open_view(view, REQ_VIEW_DIFF, flags);
5937 break;
5938 case REQ_REFRESH:
5939 load_refs();
5940 refresh_view(view);
5941 break;
5942 default:
5943 return request;
5944 }
5946 return REQ_NONE;
5947 }
5949 static bool
5950 grep_refs(struct ref_list *list, regex_t *regex)
5951 {
5952 regmatch_t pmatch;
5953 size_t i;
5955 if (!opt_show_refs || !list)
5956 return FALSE;
5958 for (i = 0; i < list->size; i++) {
5959 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5960 return TRUE;
5961 }
5963 return FALSE;
5964 }
5966 static bool
5967 main_grep(struct view *view, struct line *line)
5968 {
5969 struct commit *commit = line->data;
5970 const char *text[] = {
5971 commit->title,
5972 opt_author ? commit->author : "",
5973 mkdate(&commit->time, opt_date),
5974 NULL
5975 };
5977 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5978 }
5980 static void
5981 main_select(struct view *view, struct line *line)
5982 {
5983 struct commit *commit = line->data;
5985 string_copy_rev(view->ref, commit->id);
5986 string_copy_rev(ref_commit, view->ref);
5987 }
5989 static struct view_ops main_ops = {
5990 "commit",
5991 main_open,
5992 main_read,
5993 main_draw,
5994 main_request,
5995 main_grep,
5996 main_select,
5997 };
6000 /*
6001 * Status management
6002 */
6004 /* Whether or not the curses interface has been initialized. */
6005 static bool cursed = FALSE;
6007 /* Terminal hacks and workarounds. */
6008 static bool use_scroll_redrawwin;
6009 static bool use_scroll_status_wclear;
6011 /* The status window is used for polling keystrokes. */
6012 static WINDOW *status_win;
6014 /* Reading from the prompt? */
6015 static bool input_mode = FALSE;
6017 static bool status_empty = FALSE;
6019 /* Update status and title window. */
6020 static void
6021 report(const char *msg, ...)
6022 {
6023 struct view *view = display[current_view];
6025 if (input_mode)
6026 return;
6028 if (!view) {
6029 char buf[SIZEOF_STR];
6030 va_list args;
6032 va_start(args, msg);
6033 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6034 buf[sizeof(buf) - 1] = 0;
6035 buf[sizeof(buf) - 2] = '.';
6036 buf[sizeof(buf) - 3] = '.';
6037 buf[sizeof(buf) - 4] = '.';
6038 }
6039 va_end(args);
6040 die("%s", buf);
6041 }
6043 if (!status_empty || *msg) {
6044 va_list args;
6046 va_start(args, msg);
6048 wmove(status_win, 0, 0);
6049 if (view->has_scrolled && use_scroll_status_wclear)
6050 wclear(status_win);
6051 if (*msg) {
6052 vwprintw(status_win, msg, args);
6053 status_empty = FALSE;
6054 } else {
6055 status_empty = TRUE;
6056 }
6057 wclrtoeol(status_win);
6058 wnoutrefresh(status_win);
6060 va_end(args);
6061 }
6063 update_view_title(view);
6064 }
6066 static void
6067 init_display(void)
6068 {
6069 const char *term;
6070 int x, y;
6072 /* Initialize the curses library */
6073 if (isatty(STDIN_FILENO)) {
6074 cursed = !!initscr();
6075 opt_tty = stdin;
6076 } else {
6077 /* Leave stdin and stdout alone when acting as a pager. */
6078 opt_tty = fopen("/dev/tty", "r+");
6079 if (!opt_tty)
6080 die("Failed to open /dev/tty");
6081 cursed = !!newterm(NULL, opt_tty, opt_tty);
6082 }
6084 if (!cursed)
6085 die("Failed to initialize curses");
6087 nonl(); /* Disable conversion and detect newlines from input. */
6088 cbreak(); /* Take input chars one at a time, no wait for \n */
6089 noecho(); /* Don't echo input */
6090 leaveok(stdscr, FALSE);
6092 if (has_colors())
6093 init_colors();
6095 getmaxyx(stdscr, y, x);
6096 status_win = newwin(1, x, y - 1, 0);
6097 if (!status_win)
6098 die("Failed to create status window");
6100 /* Enable keyboard mapping */
6101 keypad(status_win, TRUE);
6102 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6104 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6105 set_tabsize(opt_tab_size);
6106 #else
6107 TABSIZE = opt_tab_size;
6108 #endif
6110 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6111 if (term && !strcmp(term, "gnome-terminal")) {
6112 /* In the gnome-terminal-emulator, the message from
6113 * scrolling up one line when impossible followed by
6114 * scrolling down one line causes corruption of the
6115 * status line. This is fixed by calling wclear. */
6116 use_scroll_status_wclear = TRUE;
6117 use_scroll_redrawwin = FALSE;
6119 } else if (term && !strcmp(term, "xrvt-xpm")) {
6120 /* No problems with full optimizations in xrvt-(unicode)
6121 * and aterm. */
6122 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6124 } else {
6125 /* When scrolling in (u)xterm the last line in the
6126 * scrolling direction will update slowly. */
6127 use_scroll_redrawwin = TRUE;
6128 use_scroll_status_wclear = FALSE;
6129 }
6130 }
6132 static int
6133 get_input(int prompt_position)
6134 {
6135 struct view *view;
6136 int i, key, cursor_y, cursor_x;
6138 if (prompt_position)
6139 input_mode = TRUE;
6141 while (TRUE) {
6142 bool loading = FALSE;
6144 foreach_view (view, i) {
6145 update_view(view);
6146 if (view_is_displayed(view) && view->has_scrolled &&
6147 use_scroll_redrawwin)
6148 redrawwin(view->win);
6149 view->has_scrolled = FALSE;
6150 if (view->pipe)
6151 loading = TRUE;
6152 }
6154 /* Update the cursor position. */
6155 if (prompt_position) {
6156 getbegyx(status_win, cursor_y, cursor_x);
6157 cursor_x = prompt_position;
6158 } else {
6159 view = display[current_view];
6160 getbegyx(view->win, cursor_y, cursor_x);
6161 cursor_x = view->width - 1;
6162 cursor_y += view->lineno - view->offset;
6163 }
6164 setsyx(cursor_y, cursor_x);
6166 /* Refresh, accept single keystroke of input */
6167 doupdate();
6168 nodelay(status_win, loading);
6169 key = wgetch(status_win);
6171 /* wgetch() with nodelay() enabled returns ERR when
6172 * there's no input. */
6173 if (key == ERR) {
6175 } else if (key == KEY_RESIZE) {
6176 int height, width;
6178 getmaxyx(stdscr, height, width);
6180 wresize(status_win, 1, width);
6181 mvwin(status_win, height - 1, 0);
6182 wnoutrefresh(status_win);
6183 resize_display();
6184 redraw_display(TRUE);
6186 } else {
6187 input_mode = FALSE;
6188 return key;
6189 }
6190 }
6191 }
6193 static char *
6194 prompt_input(const char *prompt, input_handler handler, void *data)
6195 {
6196 enum input_status status = INPUT_OK;
6197 static char buf[SIZEOF_STR];
6198 size_t pos = 0;
6200 buf[pos] = 0;
6202 while (status == INPUT_OK || status == INPUT_SKIP) {
6203 int key;
6205 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6206 wclrtoeol(status_win);
6208 key = get_input(pos + 1);
6209 switch (key) {
6210 case KEY_RETURN:
6211 case KEY_ENTER:
6212 case '\n':
6213 status = pos ? INPUT_STOP : INPUT_CANCEL;
6214 break;
6216 case KEY_BACKSPACE:
6217 if (pos > 0)
6218 buf[--pos] = 0;
6219 else
6220 status = INPUT_CANCEL;
6221 break;
6223 case KEY_ESC:
6224 status = INPUT_CANCEL;
6225 break;
6227 default:
6228 if (pos >= sizeof(buf)) {
6229 report("Input string too long");
6230 return NULL;
6231 }
6233 status = handler(data, buf, key);
6234 if (status == INPUT_OK)
6235 buf[pos++] = (char) key;
6236 }
6237 }
6239 /* Clear the status window */
6240 status_empty = FALSE;
6241 report("");
6243 if (status == INPUT_CANCEL)
6244 return NULL;
6246 buf[pos++] = 0;
6248 return buf;
6249 }
6251 static enum input_status
6252 prompt_yesno_handler(void *data, char *buf, int c)
6253 {
6254 if (c == 'y' || c == 'Y')
6255 return INPUT_STOP;
6256 if (c == 'n' || c == 'N')
6257 return INPUT_CANCEL;
6258 return INPUT_SKIP;
6259 }
6261 static bool
6262 prompt_yesno(const char *prompt)
6263 {
6264 char prompt2[SIZEOF_STR];
6266 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6267 return FALSE;
6269 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6270 }
6272 static enum input_status
6273 read_prompt_handler(void *data, char *buf, int c)
6274 {
6275 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6276 }
6278 static char *
6279 read_prompt(const char *prompt)
6280 {
6281 return prompt_input(prompt, read_prompt_handler, NULL);
6282 }
6284 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6285 {
6286 enum input_status status = INPUT_OK;
6287 int size = 0;
6289 while (items[size].text)
6290 size++;
6292 while (status == INPUT_OK) {
6293 const struct menu_item *item = &items[*selected];
6294 int key;
6295 int i;
6297 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6298 prompt, *selected + 1, size);
6299 if (item->hotkey)
6300 wprintw(status_win, "[%c] ", (char) item->hotkey);
6301 wprintw(status_win, "%s", item->text);
6302 wclrtoeol(status_win);
6304 key = get_input(COLS - 1);
6305 switch (key) {
6306 case KEY_RETURN:
6307 case KEY_ENTER:
6308 case '\n':
6309 status = INPUT_STOP;
6310 break;
6312 case KEY_LEFT:
6313 case KEY_UP:
6314 *selected = *selected - 1;
6315 if (*selected < 0)
6316 *selected = size - 1;
6317 break;
6319 case KEY_RIGHT:
6320 case KEY_DOWN:
6321 *selected = (*selected + 1) % size;
6322 break;
6324 case KEY_ESC:
6325 status = INPUT_CANCEL;
6326 break;
6328 default:
6329 for (i = 0; items[i].text; i++)
6330 if (items[i].hotkey == key) {
6331 *selected = i;
6332 status = INPUT_STOP;
6333 break;
6334 }
6335 }
6336 }
6338 /* Clear the status window */
6339 status_empty = FALSE;
6340 report("");
6342 return status != INPUT_CANCEL;
6343 }
6345 /*
6346 * Repository properties
6347 */
6349 static struct ref **refs = NULL;
6350 static size_t refs_size = 0;
6351 static struct ref *refs_head = NULL;
6353 static struct ref_list **ref_lists = NULL;
6354 static size_t ref_lists_size = 0;
6356 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6357 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6358 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6360 static int
6361 compare_refs(const void *ref1_, const void *ref2_)
6362 {
6363 const struct ref *ref1 = *(const struct ref **)ref1_;
6364 const struct ref *ref2 = *(const struct ref **)ref2_;
6366 if (ref1->tag != ref2->tag)
6367 return ref2->tag - ref1->tag;
6368 if (ref1->ltag != ref2->ltag)
6369 return ref2->ltag - ref2->ltag;
6370 if (ref1->head != ref2->head)
6371 return ref2->head - ref1->head;
6372 if (ref1->tracked != ref2->tracked)
6373 return ref2->tracked - ref1->tracked;
6374 if (ref1->remote != ref2->remote)
6375 return ref2->remote - ref1->remote;
6376 return strcmp(ref1->name, ref2->name);
6377 }
6379 static void
6380 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6381 {
6382 size_t i;
6384 for (i = 0; i < refs_size; i++)
6385 if (!visitor(data, refs[i]))
6386 break;
6387 }
6389 static struct ref *
6390 get_ref_head()
6391 {
6392 return refs_head;
6393 }
6395 static struct ref_list *
6396 get_ref_list(const char *id)
6397 {
6398 struct ref_list *list;
6399 size_t i;
6401 for (i = 0; i < ref_lists_size; i++)
6402 if (!strcmp(id, ref_lists[i]->id))
6403 return ref_lists[i];
6405 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6406 return NULL;
6407 list = calloc(1, sizeof(*list));
6408 if (!list)
6409 return NULL;
6411 for (i = 0; i < refs_size; i++) {
6412 if (!strcmp(id, refs[i]->id) &&
6413 realloc_refs_list(&list->refs, list->size, 1))
6414 list->refs[list->size++] = refs[i];
6415 }
6417 if (!list->refs) {
6418 free(list);
6419 return NULL;
6420 }
6422 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6423 ref_lists[ref_lists_size++] = list;
6424 return list;
6425 }
6427 static int
6428 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6429 {
6430 struct ref *ref = NULL;
6431 bool tag = FALSE;
6432 bool ltag = FALSE;
6433 bool remote = FALSE;
6434 bool tracked = FALSE;
6435 bool head = FALSE;
6436 int from = 0, to = refs_size - 1;
6438 if (!prefixcmp(name, "refs/tags/")) {
6439 if (!suffixcmp(name, namelen, "^{}")) {
6440 namelen -= 3;
6441 name[namelen] = 0;
6442 } else {
6443 ltag = TRUE;
6444 }
6446 tag = TRUE;
6447 namelen -= STRING_SIZE("refs/tags/");
6448 name += STRING_SIZE("refs/tags/");
6450 } else if (!prefixcmp(name, "refs/remotes/")) {
6451 remote = TRUE;
6452 namelen -= STRING_SIZE("refs/remotes/");
6453 name += STRING_SIZE("refs/remotes/");
6454 tracked = !strcmp(opt_remote, name);
6456 } else if (!prefixcmp(name, "refs/heads/")) {
6457 namelen -= STRING_SIZE("refs/heads/");
6458 name += STRING_SIZE("refs/heads/");
6459 if (!strncmp(opt_head, name, namelen))
6460 return OK;
6462 } else if (!strcmp(name, "HEAD")) {
6463 head = TRUE;
6464 if (*opt_head) {
6465 namelen = strlen(opt_head);
6466 name = opt_head;
6467 }
6468 }
6470 /* If we are reloading or it's an annotated tag, replace the
6471 * previous SHA1 with the resolved commit id; relies on the fact
6472 * git-ls-remote lists the commit id of an annotated tag right
6473 * before the commit id it points to. */
6474 while (from <= to) {
6475 size_t pos = (to + from) / 2;
6476 int cmp = strcmp(name, refs[pos]->name);
6478 if (!cmp) {
6479 ref = refs[pos];
6480 break;
6481 }
6483 if (cmp < 0)
6484 to = pos - 1;
6485 else
6486 from = pos + 1;
6487 }
6489 if (!ref) {
6490 if (!realloc_refs(&refs, refs_size, 1))
6491 return ERR;
6492 ref = calloc(1, sizeof(*ref) + namelen);
6493 if (!ref)
6494 return ERR;
6495 memmove(refs + from + 1, refs + from,
6496 (refs_size - from) * sizeof(*refs));
6497 refs[from] = ref;
6498 strncpy(ref->name, name, namelen);
6499 refs_size++;
6500 }
6502 ref->head = head;
6503 ref->tag = tag;
6504 ref->ltag = ltag;
6505 ref->remote = remote;
6506 ref->tracked = tracked;
6507 string_copy_rev(ref->id, id);
6509 if (head)
6510 refs_head = ref;
6511 return OK;
6512 }
6514 static int
6515 load_refs(void)
6516 {
6517 const char *head_argv[] = {
6518 "git", "symbolic-ref", "HEAD", NULL
6519 };
6520 static const char *ls_remote_argv[SIZEOF_ARG] = {
6521 "git", "ls-remote", opt_git_dir, NULL
6522 };
6523 static bool init = FALSE;
6524 size_t i;
6526 if (!init) {
6527 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6528 die("TIG_LS_REMOTE contains too many arguments");
6529 init = TRUE;
6530 }
6532 if (!*opt_git_dir)
6533 return OK;
6535 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6536 !prefixcmp(opt_head, "refs/heads/")) {
6537 char *offset = opt_head + STRING_SIZE("refs/heads/");
6539 memmove(opt_head, offset, strlen(offset) + 1);
6540 }
6542 refs_head = NULL;
6543 for (i = 0; i < refs_size; i++)
6544 refs[i]->id[0] = 0;
6546 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6547 return ERR;
6549 /* Update the ref lists to reflect changes. */
6550 for (i = 0; i < ref_lists_size; i++) {
6551 struct ref_list *list = ref_lists[i];
6552 size_t old, new;
6554 for (old = new = 0; old < list->size; old++)
6555 if (!strcmp(list->id, list->refs[old]->id))
6556 list->refs[new++] = list->refs[old];
6557 list->size = new;
6558 }
6560 return OK;
6561 }
6563 static void
6564 set_remote_branch(const char *name, const char *value, size_t valuelen)
6565 {
6566 if (!strcmp(name, ".remote")) {
6567 string_ncopy(opt_remote, value, valuelen);
6569 } else if (*opt_remote && !strcmp(name, ".merge")) {
6570 size_t from = strlen(opt_remote);
6572 if (!prefixcmp(value, "refs/heads/"))
6573 value += STRING_SIZE("refs/heads/");
6575 if (!string_format_from(opt_remote, &from, "/%s", value))
6576 opt_remote[0] = 0;
6577 }
6578 }
6580 static void
6581 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6582 {
6583 const char *argv[SIZEOF_ARG] = { name, "=" };
6584 int argc = 1 + (cmd == option_set_command);
6585 enum option_code error;
6587 if (!argv_from_string(argv, &argc, value))
6588 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6589 else
6590 error = cmd(argc, argv);
6592 if (error != OPT_OK)
6593 warn("Option 'tig.%s': %s", name, option_errors[error]);
6594 }
6596 static bool
6597 set_environment_variable(const char *name, const char *value)
6598 {
6599 size_t len = strlen(name) + 1 + strlen(value) + 1;
6600 char *env = malloc(len);
6602 if (env &&
6603 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6604 putenv(env) == 0)
6605 return TRUE;
6606 free(env);
6607 return FALSE;
6608 }
6610 static void
6611 set_work_tree(const char *value)
6612 {
6613 char cwd[SIZEOF_STR];
6615 if (!getcwd(cwd, sizeof(cwd)))
6616 die("Failed to get cwd path: %s", strerror(errno));
6617 if (chdir(opt_git_dir) < 0)
6618 die("Failed to chdir(%s): %s", strerror(errno));
6619 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6620 die("Failed to get git path: %s", strerror(errno));
6621 if (chdir(cwd) < 0)
6622 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6623 if (chdir(value) < 0)
6624 die("Failed to chdir(%s): %s", value, strerror(errno));
6625 if (!getcwd(cwd, sizeof(cwd)))
6626 die("Failed to get cwd path: %s", strerror(errno));
6627 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6628 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6629 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6630 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6631 opt_is_inside_work_tree = TRUE;
6632 }
6634 static int
6635 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6636 {
6637 if (!strcmp(name, "i18n.commitencoding"))
6638 string_ncopy(opt_encoding, value, valuelen);
6640 else if (!strcmp(name, "core.editor"))
6641 string_ncopy(opt_editor, value, valuelen);
6643 else if (!strcmp(name, "core.worktree"))
6644 set_work_tree(value);
6646 else if (!prefixcmp(name, "tig.color."))
6647 set_repo_config_option(name + 10, value, option_color_command);
6649 else if (!prefixcmp(name, "tig.bind."))
6650 set_repo_config_option(name + 9, value, option_bind_command);
6652 else if (!prefixcmp(name, "tig."))
6653 set_repo_config_option(name + 4, value, option_set_command);
6655 else if (*opt_head && !prefixcmp(name, "branch.") &&
6656 !strncmp(name + 7, opt_head, strlen(opt_head)))
6657 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6659 return OK;
6660 }
6662 static int
6663 load_git_config(void)
6664 {
6665 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6667 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6668 }
6670 static int
6671 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6672 {
6673 if (!opt_git_dir[0]) {
6674 string_ncopy(opt_git_dir, name, namelen);
6676 } else if (opt_is_inside_work_tree == -1) {
6677 /* This can be 3 different values depending on the
6678 * version of git being used. If git-rev-parse does not
6679 * understand --is-inside-work-tree it will simply echo
6680 * the option else either "true" or "false" is printed.
6681 * Default to true for the unknown case. */
6682 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6684 } else if (*name == '.') {
6685 string_ncopy(opt_cdup, name, namelen);
6687 } else {
6688 string_ncopy(opt_prefix, name, namelen);
6689 }
6691 return OK;
6692 }
6694 static int
6695 load_repo_info(void)
6696 {
6697 const char *rev_parse_argv[] = {
6698 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6699 "--show-cdup", "--show-prefix", NULL
6700 };
6702 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6703 }
6706 /*
6707 * Main
6708 */
6710 static const char usage[] =
6711 "tig " TIG_VERSION " (" __DATE__ ")\n"
6712 "\n"
6713 "Usage: tig [options] [revs] [--] [paths]\n"
6714 " or: tig show [options] [revs] [--] [paths]\n"
6715 " or: tig blame [options] [rev] [--] path\n"
6716 " or: tig status\n"
6717 " or: tig < [git command output]\n"
6718 "\n"
6719 "Options:\n"
6720 " -v, --version Show version and exit\n"
6721 " -h, --help Show help message and exit";
6723 static void __NORETURN
6724 quit(int sig)
6725 {
6726 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6727 if (cursed)
6728 endwin();
6729 exit(0);
6730 }
6732 static void __NORETURN
6733 die(const char *err, ...)
6734 {
6735 va_list args;
6737 endwin();
6739 va_start(args, err);
6740 fputs("tig: ", stderr);
6741 vfprintf(stderr, err, args);
6742 fputs("\n", stderr);
6743 va_end(args);
6745 exit(1);
6746 }
6748 static void
6749 warn(const char *msg, ...)
6750 {
6751 va_list args;
6753 va_start(args, msg);
6754 fputs("tig warning: ", stderr);
6755 vfprintf(stderr, msg, args);
6756 fputs("\n", stderr);
6757 va_end(args);
6758 }
6760 static int
6761 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6762 {
6763 const char ***filter_args = data;
6765 return argv_append(filter_args, name) ? OK : ERR;
6766 }
6768 static void
6769 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6770 {
6771 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6772 const char **all_argv = NULL;
6774 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6775 !argv_append_array(&all_argv, argv) ||
6776 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6777 die("Failed to split arguments");
6778 argv_free(all_argv);
6779 free(all_argv);
6780 }
6782 static void
6783 filter_options(const char *argv[])
6784 {
6785 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6786 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6787 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6788 }
6790 static enum request
6791 parse_options(int argc, const char *argv[])
6792 {
6793 enum request request = REQ_VIEW_MAIN;
6794 const char *subcommand;
6795 bool seen_dashdash = FALSE;
6796 const char **filter_argv = NULL;
6797 int i;
6799 if (!isatty(STDIN_FILENO))
6800 return REQ_VIEW_PAGER;
6802 if (argc <= 1)
6803 return REQ_VIEW_MAIN;
6805 subcommand = argv[1];
6806 if (!strcmp(subcommand, "status")) {
6807 if (argc > 2)
6808 warn("ignoring arguments after `%s'", subcommand);
6809 return REQ_VIEW_STATUS;
6811 } else if (!strcmp(subcommand, "blame")) {
6812 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6813 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6814 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6816 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6817 die("invalid number of options to blame\n\n%s", usage);
6819 if (opt_rev_argv) {
6820 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6821 }
6823 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6824 return REQ_VIEW_BLAME;
6826 } else if (!strcmp(subcommand, "show")) {
6827 request = REQ_VIEW_DIFF;
6829 } else {
6830 subcommand = NULL;
6831 }
6833 for (i = 1 + !!subcommand; i < argc; i++) {
6834 const char *opt = argv[i];
6836 if (seen_dashdash) {
6837 argv_append(&opt_file_argv, opt);
6838 continue;
6840 } else if (!strcmp(opt, "--")) {
6841 seen_dashdash = TRUE;
6842 continue;
6844 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6845 printf("tig version %s\n", TIG_VERSION);
6846 quit(0);
6848 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6849 printf("%s\n", usage);
6850 quit(0);
6852 } else if (!strcmp(opt, "--all")) {
6853 argv_append(&opt_rev_argv, opt);
6854 continue;
6855 }
6857 if (!argv_append(&filter_argv, opt))
6858 die("command too long");
6859 }
6861 if (filter_argv)
6862 filter_options(filter_argv);
6864 return request;
6865 }
6867 int
6868 main(int argc, const char *argv[])
6869 {
6870 const char *codeset = "UTF-8";
6871 enum request request = parse_options(argc, argv);
6872 struct view *view;
6874 signal(SIGINT, quit);
6875 signal(SIGPIPE, SIG_IGN);
6877 if (setlocale(LC_ALL, "")) {
6878 codeset = nl_langinfo(CODESET);
6879 }
6881 if (load_repo_info() == ERR)
6882 die("Failed to load repo info.");
6884 if (load_options() == ERR)
6885 die("Failed to load user config.");
6887 if (load_git_config() == ERR)
6888 die("Failed to load repo config.");
6890 /* Require a git repository unless when running in pager mode. */
6891 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6892 die("Not a git repository");
6894 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6895 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6896 if (opt_iconv_in == ICONV_NONE)
6897 die("Failed to initialize character set conversion");
6898 }
6900 if (codeset && strcmp(codeset, "UTF-8")) {
6901 opt_iconv_out = iconv_open(codeset, "UTF-8");
6902 if (opt_iconv_out == ICONV_NONE)
6903 die("Failed to initialize character set conversion");
6904 }
6906 if (load_refs() == ERR)
6907 die("Failed to load refs.");
6909 init_display();
6911 while (view_driver(display[current_view], request)) {
6912 int key = get_input(0);
6914 view = display[current_view];
6915 request = get_keybinding(view->keymap, key);
6917 /* Some low-level request handling. This keeps access to
6918 * status_win restricted. */
6919 switch (request) {
6920 case REQ_NONE:
6921 report("Unknown key, press %s for help",
6922 get_key(view->keymap, REQ_VIEW_HELP));
6923 break;
6924 case REQ_PROMPT:
6925 {
6926 char *cmd = read_prompt(":");
6928 if (cmd && isdigit(*cmd)) {
6929 int lineno = view->lineno + 1;
6931 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6932 select_view_line(view, lineno - 1);
6933 report("");
6934 } else {
6935 report("Unable to parse '%s' as a line number", cmd);
6936 }
6938 } else if (cmd) {
6939 struct view *next = VIEW(REQ_VIEW_PAGER);
6940 const char *argv[SIZEOF_ARG] = { "git" };
6941 int argc = 1;
6943 /* When running random commands, initially show the
6944 * command in the title. However, it maybe later be
6945 * overwritten if a commit line is selected. */
6946 string_ncopy(next->ref, cmd, strlen(cmd));
6948 if (!argv_from_string(argv, &argc, cmd)) {
6949 report("Too many arguments");
6950 } else {
6951 open_argv(view, next, argv, NULL, OPEN_DEFAULT);
6952 }
6953 }
6955 request = REQ_NONE;
6956 break;
6957 }
6958 case REQ_SEARCH:
6959 case REQ_SEARCH_BACK:
6960 {
6961 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6962 char *search = read_prompt(prompt);
6964 if (search)
6965 string_ncopy(opt_search, search, strlen(search));
6966 else if (*opt_search)
6967 request = request == REQ_SEARCH ?
6968 REQ_FIND_NEXT :
6969 REQ_FIND_PREV;
6970 else
6971 request = REQ_NONE;
6972 break;
6973 }
6974 default:
6975 break;
6976 }
6977 }
6979 quit(0);
6981 return 0;
6982 }