![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
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 }
210 #define author_trim(cols) (cols == 0 || cols > 5)
212 static const char *
213 mkauthor(const char *text, int cols, enum author author)
214 {
215 bool trim = author_trim(cols);
216 bool abbreviate = author == AUTHOR_ABBREVIATED || !trim;
218 if (!author)
219 return "";
220 if (abbreviate && text)
221 return get_author_initials(text);
222 return text;
223 }
225 /*
226 * User requests
227 */
229 #define REQ_INFO \
230 /* XXX: Keep the view request first and in sync with views[]. */ \
231 REQ_GROUP("View switching") \
232 REQ_(VIEW_MAIN, "Show main view"), \
233 REQ_(VIEW_DIFF, "Show diff view"), \
234 REQ_(VIEW_LOG, "Show log view"), \
235 REQ_(VIEW_TREE, "Show tree view"), \
236 REQ_(VIEW_BLOB, "Show blob view"), \
237 REQ_(VIEW_BLAME, "Show blame view"), \
238 REQ_(VIEW_BRANCH, "Show branch view"), \
239 REQ_(VIEW_HELP, "Show help page"), \
240 REQ_(VIEW_PAGER, "Show pager view"), \
241 REQ_(VIEW_STATUS, "Show status view"), \
242 REQ_(VIEW_STAGE, "Show stage view"), \
243 \
244 REQ_GROUP("View manipulation") \
245 REQ_(ENTER, "Enter current line and scroll"), \
246 REQ_(NEXT, "Move to next"), \
247 REQ_(PREVIOUS, "Move to previous"), \
248 REQ_(PARENT, "Move to parent"), \
249 REQ_(VIEW_NEXT, "Move focus to next view"), \
250 REQ_(REFRESH, "Reload and refresh"), \
251 REQ_(MAXIMIZE, "Maximize the current view"), \
252 REQ_(VIEW_CLOSE, "Close the current view"), \
253 REQ_(QUIT, "Close all views and quit"), \
254 \
255 REQ_GROUP("View specific requests") \
256 REQ_(STATUS_UPDATE, "Update file status"), \
257 REQ_(STATUS_REVERT, "Revert file changes"), \
258 REQ_(STATUS_MERGE, "Merge file using external tool"), \
259 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
260 \
261 REQ_GROUP("Cursor navigation") \
262 REQ_(MOVE_UP, "Move cursor one line up"), \
263 REQ_(MOVE_DOWN, "Move cursor one line down"), \
264 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
265 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
266 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
267 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
268 \
269 REQ_GROUP("Scrolling") \
270 REQ_(SCROLL_FIRST_COL, "Scroll to the first line columns"), \
271 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
272 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
273 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
274 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
275 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
276 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
277 \
278 REQ_GROUP("Searching") \
279 REQ_(SEARCH, "Search the view"), \
280 REQ_(SEARCH_BACK, "Search backwards in the view"), \
281 REQ_(FIND_NEXT, "Find next search match"), \
282 REQ_(FIND_PREV, "Find previous search match"), \
283 \
284 REQ_GROUP("Option manipulation") \
285 REQ_(OPTIONS, "Open option menu"), \
286 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
287 REQ_(TOGGLE_DATE, "Toggle date display"), \
288 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
289 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
290 REQ_(TOGGLE_GRAPHIC, "Toggle (line) graphics mode"), \
291 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
292 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
293 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
294 \
295 REQ_GROUP("Misc") \
296 REQ_(PROMPT, "Bring up the prompt"), \
297 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
298 REQ_(SHOW_VERSION, "Show version information"), \
299 REQ_(STOP_LOADING, "Stop all loading views"), \
300 REQ_(EDIT, "Open in editor"), \
301 REQ_(NONE, "Do nothing")
304 /* User action requests. */
305 enum request {
306 #define REQ_GROUP(help)
307 #define REQ_(req, help) REQ_##req
309 /* Offset all requests to avoid conflicts with ncurses getch values. */
310 REQ_UNKNOWN = KEY_MAX + 1,
311 REQ_OFFSET,
312 REQ_INFO
314 #undef REQ_GROUP
315 #undef REQ_
316 };
318 struct request_info {
319 enum request request;
320 const char *name;
321 int namelen;
322 const char *help;
323 };
325 static const struct request_info req_info[] = {
326 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
327 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
328 REQ_INFO
329 #undef REQ_GROUP
330 #undef REQ_
331 };
333 static enum request
334 get_request(const char *name)
335 {
336 int namelen = strlen(name);
337 int i;
339 for (i = 0; i < ARRAY_SIZE(req_info); i++)
340 if (enum_equals(req_info[i], name, namelen))
341 return req_info[i].request;
343 return REQ_UNKNOWN;
344 }
347 /*
348 * Options
349 */
351 /* Option and state variables. */
352 static enum graphic opt_line_graphics = GRAPHIC_DEFAULT;
353 static enum date opt_date = DATE_DEFAULT;
354 static enum author opt_author = AUTHOR_DEFAULT;
355 static bool opt_rev_graph = TRUE;
356 static bool opt_line_number = FALSE;
357 static bool opt_show_refs = TRUE;
358 static bool opt_untracked_dirs_content = TRUE;
359 static int opt_num_interval = 5;
360 static double opt_hscroll = 0.50;
361 static double opt_scale_split_view = 2.0 / 3.0;
362 static int opt_tab_size = 8;
363 static int opt_author_cols = AUTHOR_COLS;
364 static char opt_path[SIZEOF_STR] = "";
365 static char opt_file[SIZEOF_STR] = "";
366 static char opt_ref[SIZEOF_REF] = "";
367 static char opt_head[SIZEOF_REF] = "";
368 static char opt_remote[SIZEOF_REF] = "";
369 static char opt_encoding[20] = "UTF-8";
370 static iconv_t opt_iconv_in = ICONV_NONE;
371 static iconv_t opt_iconv_out = ICONV_NONE;
372 static char opt_search[SIZEOF_STR] = "";
373 static char opt_cdup[SIZEOF_STR] = "";
374 static char opt_prefix[SIZEOF_STR] = "";
375 static char opt_git_dir[SIZEOF_STR] = "";
376 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
377 static char opt_editor[SIZEOF_STR] = "";
378 static FILE *opt_tty = NULL;
379 static const char **opt_diff_argv = NULL;
380 static const char **opt_rev_argv = NULL;
381 static const char **opt_file_argv = NULL;
382 static const char **opt_blame_argv = NULL;
384 #define is_initial_commit() (!get_ref_head())
385 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strcmp(rev, get_ref_head()->id)))
388 /*
389 * Line-oriented content detection.
390 */
392 #define LINE_INFO \
393 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
394 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
395 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
396 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
397 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
398 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
399 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
400 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
401 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
402 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
403 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
404 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
405 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
406 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
407 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
408 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
409 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
410 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
411 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
412 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
413 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
414 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
415 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
416 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
417 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
418 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
419 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
420 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
421 LINE(TESTED, " Tested-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
422 LINE(REVIEWED, " Reviewed-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
423 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
424 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
425 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
426 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
427 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
428 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
429 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
430 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
431 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
432 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
433 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
434 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
435 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
436 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
437 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
438 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
439 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
440 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
441 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
442 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
443 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
444 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
445 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
446 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
447 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
448 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
449 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
450 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
451 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
452 LINE(GRAPH_LINE_0, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
453 LINE(GRAPH_LINE_1, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
454 LINE(GRAPH_LINE_2, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
455 LINE(GRAPH_LINE_3, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
456 LINE(GRAPH_LINE_4, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
457 LINE(GRAPH_LINE_5, "", COLOR_WHITE, COLOR_DEFAULT, 0), \
458 LINE(GRAPH_LINE_6, "", COLOR_RED, COLOR_DEFAULT, 0), \
459 LINE(GRAPH_COMMIT, "", COLOR_BLUE, COLOR_DEFAULT, 0)
461 enum line_type {
462 #define LINE(type, line, fg, bg, attr) \
463 LINE_##type
464 LINE_INFO,
465 LINE_NONE
466 #undef LINE
467 };
469 struct line_info {
470 const char *name; /* Option name. */
471 int namelen; /* Size of option name. */
472 const char *line; /* The start of line to match. */
473 int linelen; /* Size of string to match. */
474 int fg, bg, attr; /* Color and text attributes for the lines. */
475 };
477 static struct line_info line_info[] = {
478 #define LINE(type, line, fg, bg, attr) \
479 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
480 LINE_INFO
481 #undef LINE
482 };
484 static enum line_type
485 get_line_type(const char *line)
486 {
487 int linelen = strlen(line);
488 enum line_type type;
490 for (type = 0; type < ARRAY_SIZE(line_info); type++)
491 /* Case insensitive search matches Signed-off-by lines better. */
492 if (linelen >= line_info[type].linelen &&
493 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
494 return type;
496 return LINE_DEFAULT;
497 }
499 static inline int
500 get_line_attr(enum line_type type)
501 {
502 assert(type < ARRAY_SIZE(line_info));
503 return COLOR_PAIR(type) | line_info[type].attr;
504 }
506 static struct line_info *
507 get_line_info(const char *name)
508 {
509 size_t namelen = strlen(name);
510 enum line_type type;
512 for (type = 0; type < ARRAY_SIZE(line_info); type++)
513 if (enum_equals(line_info[type], name, namelen))
514 return &line_info[type];
516 return NULL;
517 }
519 static void
520 init_colors(void)
521 {
522 int default_bg = line_info[LINE_DEFAULT].bg;
523 int default_fg = line_info[LINE_DEFAULT].fg;
524 enum line_type type;
526 start_color();
528 if (assume_default_colors(default_fg, default_bg) == ERR) {
529 default_bg = COLOR_BLACK;
530 default_fg = COLOR_WHITE;
531 }
533 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
534 struct line_info *info = &line_info[type];
535 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
536 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
538 init_pair(type, fg, bg);
539 }
540 }
542 struct line {
543 enum line_type type;
545 /* State flags */
546 unsigned int selected:1;
547 unsigned int dirty:1;
548 unsigned int cleareol:1;
549 unsigned int other:16;
551 void *data; /* User data */
552 };
555 /*
556 * Keys
557 */
559 struct keybinding {
560 int alias;
561 enum request request;
562 };
564 static struct keybinding default_keybindings[] = {
565 /* View switching */
566 { 'm', REQ_VIEW_MAIN },
567 { 'd', REQ_VIEW_DIFF },
568 { 'l', REQ_VIEW_LOG },
569 { 't', REQ_VIEW_TREE },
570 { 'f', REQ_VIEW_BLOB },
571 { 'B', REQ_VIEW_BLAME },
572 { 'H', REQ_VIEW_BRANCH },
573 { 'p', REQ_VIEW_PAGER },
574 { 'h', REQ_VIEW_HELP },
575 { 'S', REQ_VIEW_STATUS },
576 { 'c', REQ_VIEW_STAGE },
578 /* View manipulation */
579 { 'q', REQ_VIEW_CLOSE },
580 { KEY_TAB, REQ_VIEW_NEXT },
581 { KEY_RETURN, REQ_ENTER },
582 { KEY_UP, REQ_PREVIOUS },
583 { KEY_CTL('P'), REQ_PREVIOUS },
584 { KEY_DOWN, REQ_NEXT },
585 { KEY_CTL('N'), REQ_NEXT },
586 { 'R', REQ_REFRESH },
587 { KEY_F(5), REQ_REFRESH },
588 { 'O', REQ_MAXIMIZE },
590 /* Cursor navigation */
591 { 'k', REQ_MOVE_UP },
592 { 'j', REQ_MOVE_DOWN },
593 { KEY_HOME, REQ_MOVE_FIRST_LINE },
594 { KEY_END, REQ_MOVE_LAST_LINE },
595 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
596 { KEY_CTL('D'), REQ_MOVE_PAGE_DOWN },
597 { ' ', REQ_MOVE_PAGE_DOWN },
598 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
599 { KEY_CTL('U'), REQ_MOVE_PAGE_UP },
600 { 'b', REQ_MOVE_PAGE_UP },
601 { '-', REQ_MOVE_PAGE_UP },
603 /* Scrolling */
604 { '|', REQ_SCROLL_FIRST_COL },
605 { KEY_LEFT, REQ_SCROLL_LEFT },
606 { KEY_RIGHT, REQ_SCROLL_RIGHT },
607 { KEY_IC, REQ_SCROLL_LINE_UP },
608 { KEY_CTL('Y'), REQ_SCROLL_LINE_UP },
609 { KEY_DC, REQ_SCROLL_LINE_DOWN },
610 { KEY_CTL('E'), REQ_SCROLL_LINE_DOWN },
611 { 'w', REQ_SCROLL_PAGE_UP },
612 { 's', REQ_SCROLL_PAGE_DOWN },
614 /* Searching */
615 { '/', REQ_SEARCH },
616 { '?', REQ_SEARCH_BACK },
617 { 'n', REQ_FIND_NEXT },
618 { 'N', REQ_FIND_PREV },
620 /* Misc */
621 { 'Q', REQ_QUIT },
622 { 'z', REQ_STOP_LOADING },
623 { 'v', REQ_SHOW_VERSION },
624 { 'r', REQ_SCREEN_REDRAW },
625 { KEY_CTL('L'), REQ_SCREEN_REDRAW },
626 { 'o', REQ_OPTIONS },
627 { '.', REQ_TOGGLE_LINENO },
628 { 'D', REQ_TOGGLE_DATE },
629 { 'A', REQ_TOGGLE_AUTHOR },
630 { 'g', REQ_TOGGLE_REV_GRAPH },
631 { '~', REQ_TOGGLE_GRAPHIC },
632 { 'F', REQ_TOGGLE_REFS },
633 { 'I', REQ_TOGGLE_SORT_ORDER },
634 { 'i', REQ_TOGGLE_SORT_FIELD },
635 { ':', REQ_PROMPT },
636 { 'u', REQ_STATUS_UPDATE },
637 { '!', REQ_STATUS_REVERT },
638 { 'M', REQ_STATUS_MERGE },
639 { '@', REQ_STAGE_NEXT },
640 { ',', REQ_PARENT },
641 { 'e', REQ_EDIT },
642 };
644 #define KEYMAP_INFO \
645 KEYMAP_(GENERIC), \
646 KEYMAP_(MAIN), \
647 KEYMAP_(DIFF), \
648 KEYMAP_(LOG), \
649 KEYMAP_(TREE), \
650 KEYMAP_(BLOB), \
651 KEYMAP_(BLAME), \
652 KEYMAP_(BRANCH), \
653 KEYMAP_(PAGER), \
654 KEYMAP_(HELP), \
655 KEYMAP_(STATUS), \
656 KEYMAP_(STAGE)
658 enum keymap {
659 #define KEYMAP_(name) KEYMAP_##name
660 KEYMAP_INFO
661 #undef KEYMAP_
662 };
664 static const struct enum_map keymap_table[] = {
665 #define KEYMAP_(name) ENUM_MAP(#name, KEYMAP_##name)
666 KEYMAP_INFO
667 #undef KEYMAP_
668 };
670 #define set_keymap(map, name) map_enum(map, keymap_table, name)
672 struct keybinding_table {
673 struct keybinding *data;
674 size_t size;
675 };
677 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
679 static void
680 add_keybinding(enum keymap keymap, enum request request, int key)
681 {
682 struct keybinding_table *table = &keybindings[keymap];
683 size_t i;
685 for (i = 0; i < keybindings[keymap].size; i++) {
686 if (keybindings[keymap].data[i].alias == key) {
687 keybindings[keymap].data[i].request = request;
688 return;
689 }
690 }
692 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
693 if (!table->data)
694 die("Failed to allocate keybinding");
695 table->data[table->size].alias = key;
696 table->data[table->size++].request = request;
698 if (request == REQ_NONE && keymap == KEYMAP_GENERIC) {
699 int i;
701 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
702 if (default_keybindings[i].alias == key)
703 default_keybindings[i].request = REQ_NONE;
704 }
705 }
707 /* Looks for a key binding first in the given map, then in the generic map, and
708 * lastly in the default keybindings. */
709 static enum request
710 get_keybinding(enum keymap keymap, int key)
711 {
712 size_t i;
714 for (i = 0; i < keybindings[keymap].size; i++)
715 if (keybindings[keymap].data[i].alias == key)
716 return keybindings[keymap].data[i].request;
718 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
719 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
720 return keybindings[KEYMAP_GENERIC].data[i].request;
722 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
723 if (default_keybindings[i].alias == key)
724 return default_keybindings[i].request;
726 return (enum request) key;
727 }
730 struct key {
731 const char *name;
732 int value;
733 };
735 static const struct key key_table[] = {
736 { "Enter", KEY_RETURN },
737 { "Space", ' ' },
738 { "Backspace", KEY_BACKSPACE },
739 { "Tab", KEY_TAB },
740 { "Escape", KEY_ESC },
741 { "Left", KEY_LEFT },
742 { "Right", KEY_RIGHT },
743 { "Up", KEY_UP },
744 { "Down", KEY_DOWN },
745 { "Insert", KEY_IC },
746 { "Delete", KEY_DC },
747 { "Hash", '#' },
748 { "Home", KEY_HOME },
749 { "End", KEY_END },
750 { "PageUp", KEY_PPAGE },
751 { "PageDown", KEY_NPAGE },
752 { "F1", KEY_F(1) },
753 { "F2", KEY_F(2) },
754 { "F3", KEY_F(3) },
755 { "F4", KEY_F(4) },
756 { "F5", KEY_F(5) },
757 { "F6", KEY_F(6) },
758 { "F7", KEY_F(7) },
759 { "F8", KEY_F(8) },
760 { "F9", KEY_F(9) },
761 { "F10", KEY_F(10) },
762 { "F11", KEY_F(11) },
763 { "F12", KEY_F(12) },
764 };
766 static int
767 get_key_value(const char *name)
768 {
769 int i;
771 for (i = 0; i < ARRAY_SIZE(key_table); i++)
772 if (!strcasecmp(key_table[i].name, name))
773 return key_table[i].value;
775 if (strlen(name) == 2 && name[0] == '^' && isprint(*name))
776 return (int)name[1] & 0x1f;
777 if (strlen(name) == 1 && isprint(*name))
778 return (int) *name;
779 return ERR;
780 }
782 static const char *
783 get_key_name(int key_value)
784 {
785 static char key_char[] = "'X'\0";
786 const char *seq = NULL;
787 int key;
789 for (key = 0; key < ARRAY_SIZE(key_table); key++)
790 if (key_table[key].value == key_value)
791 seq = key_table[key].name;
793 if (seq == NULL && key_value < 0x7f) {
794 char *s = key_char + 1;
796 if (key_value >= 0x20) {
797 *s++ = key_value;
798 } else {
799 *s++ = '^';
800 *s++ = 0x40 | (key_value & 0x1f);
801 }
802 *s++ = '\'';
803 *s++ = '\0';
804 seq = key_char;
805 }
807 return seq ? seq : "(no key)";
808 }
810 static bool
811 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
812 {
813 const char *sep = *pos > 0 ? ", " : "";
814 const char *keyname = get_key_name(keybinding->alias);
816 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
817 }
819 static bool
820 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
821 enum keymap keymap, bool all)
822 {
823 int i;
825 for (i = 0; i < keybindings[keymap].size; i++) {
826 if (keybindings[keymap].data[i].request == request) {
827 if (!append_key(buf, pos, &keybindings[keymap].data[i]))
828 return FALSE;
829 if (!all)
830 break;
831 }
832 }
834 return TRUE;
835 }
837 #define get_key(keymap, request) get_keys(keymap, request, FALSE)
839 static const char *
840 get_keys(enum keymap keymap, enum request request, bool all)
841 {
842 static char buf[BUFSIZ];
843 size_t pos = 0;
844 int i;
846 buf[pos] = 0;
848 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
849 return "Too many keybindings!";
850 if (pos > 0 && !all)
851 return buf;
853 if (keymap != KEYMAP_GENERIC) {
854 /* Only the generic keymap includes the default keybindings when
855 * listing all keys. */
856 if (all)
857 return buf;
859 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
860 return "Too many keybindings!";
861 if (pos)
862 return buf;
863 }
865 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
866 if (default_keybindings[i].request == request) {
867 if (!append_key(buf, &pos, &default_keybindings[i]))
868 return "Too many keybindings!";
869 if (!all)
870 return buf;
871 }
872 }
874 return buf;
875 }
877 struct run_request {
878 enum keymap keymap;
879 int key;
880 const char **argv;
881 };
883 static struct run_request *run_request;
884 static size_t run_requests;
886 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
888 static enum request
889 add_run_request(enum keymap keymap, int key, const char **argv)
890 {
891 struct run_request *req;
893 if (!realloc_run_requests(&run_request, run_requests, 1))
894 return REQ_NONE;
896 req = &run_request[run_requests];
897 req->keymap = keymap;
898 req->key = key;
899 req->argv = NULL;
901 if (!argv_copy(&req->argv, argv))
902 return REQ_NONE;
904 return REQ_NONE + ++run_requests;
905 }
907 static struct run_request *
908 get_run_request(enum request request)
909 {
910 if (request <= REQ_NONE)
911 return NULL;
912 return &run_request[request - REQ_NONE - 1];
913 }
915 static void
916 add_builtin_run_requests(void)
917 {
918 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
919 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
920 const char *commit[] = { "git", "commit", NULL };
921 const char *gc[] = { "git", "gc", NULL };
922 struct run_request reqs[] = {
923 { KEYMAP_MAIN, 'C', cherry_pick },
924 { KEYMAP_STATUS, 'C', commit },
925 { KEYMAP_BRANCH, 'C', checkout },
926 { KEYMAP_GENERIC, 'G', gc },
927 };
928 int i;
930 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
931 enum request req = get_keybinding(reqs[i].keymap, reqs[i].key);
933 if (req != reqs[i].key)
934 continue;
935 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argv);
936 if (req != REQ_NONE)
937 add_keybinding(reqs[i].keymap, req, reqs[i].key);
938 }
939 }
941 /*
942 * User config file handling.
943 */
945 #define OPT_ERR_INFO \
946 OPT_ERR_(INTEGER_VALUE_OUT_OF_BOUND, "Integer value out of bound"), \
947 OPT_ERR_(INVALID_STEP_VALUE, "Invalid step value"), \
948 OPT_ERR_(NO_OPTION_VALUE, "No option value"), \
949 OPT_ERR_(NO_VALUE_ASSIGNED, "No value assigned"), \
950 OPT_ERR_(OBSOLETE_REQUEST_NAME, "Obsolete request name"), \
951 OPT_ERR_(OUT_OF_MEMORY, "Out of memory"), \
952 OPT_ERR_(TOO_MANY_OPTION_ARGUMENTS, "Too many option arguments"), \
953 OPT_ERR_(UNKNOWN_ATTRIBUTE, "Unknown attribute"), \
954 OPT_ERR_(UNKNOWN_COLOR, "Unknown color"), \
955 OPT_ERR_(UNKNOWN_COLOR_NAME, "Unknown color name"), \
956 OPT_ERR_(UNKNOWN_KEY, "Unknown key"), \
957 OPT_ERR_(UNKNOWN_KEY_MAP, "Unknown key map"), \
958 OPT_ERR_(UNKNOWN_OPTION_COMMAND, "Unknown option command"), \
959 OPT_ERR_(UNKNOWN_REQUEST_NAME, "Unknown request name"), \
960 OPT_ERR_(UNKNOWN_VARIABLE_NAME, "Unknown variable name"), \
961 OPT_ERR_(UNMATCHED_QUOTATION, "Unmatched quotation"), \
962 OPT_ERR_(WRONG_NUMBER_OF_ARGUMENTS, "Wrong number of arguments"),
964 enum option_code {
965 #define OPT_ERR_(name, msg) OPT_ERR_ ## name
966 OPT_ERR_INFO
967 #undef OPT_ERR_
968 OPT_OK
969 };
971 static const char *option_errors[] = {
972 #define OPT_ERR_(name, msg) msg
973 OPT_ERR_INFO
974 #undef OPT_ERR_
975 };
977 static const struct enum_map color_map[] = {
978 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
979 COLOR_MAP(DEFAULT),
980 COLOR_MAP(BLACK),
981 COLOR_MAP(BLUE),
982 COLOR_MAP(CYAN),
983 COLOR_MAP(GREEN),
984 COLOR_MAP(MAGENTA),
985 COLOR_MAP(RED),
986 COLOR_MAP(WHITE),
987 COLOR_MAP(YELLOW),
988 };
990 static const struct enum_map attr_map[] = {
991 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
992 ATTR_MAP(NORMAL),
993 ATTR_MAP(BLINK),
994 ATTR_MAP(BOLD),
995 ATTR_MAP(DIM),
996 ATTR_MAP(REVERSE),
997 ATTR_MAP(STANDOUT),
998 ATTR_MAP(UNDERLINE),
999 };
1001 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
1003 static enum option_code
1004 parse_step(double *opt, const char *arg)
1005 {
1006 *opt = atoi(arg);
1007 if (!strchr(arg, '%'))
1008 return OPT_OK;
1010 /* "Shift down" so 100% and 1 does not conflict. */
1011 *opt = (*opt - 1) / 100;
1012 if (*opt >= 1.0) {
1013 *opt = 0.99;
1014 return OPT_ERR_INVALID_STEP_VALUE;
1015 }
1016 if (*opt < 0.0) {
1017 *opt = 1;
1018 return OPT_ERR_INVALID_STEP_VALUE;
1019 }
1020 return OPT_OK;
1021 }
1023 static enum option_code
1024 parse_int(int *opt, const char *arg, int min, int max)
1025 {
1026 int value = atoi(arg);
1028 if (min <= value && value <= max) {
1029 *opt = value;
1030 return OPT_OK;
1031 }
1033 return OPT_ERR_INTEGER_VALUE_OUT_OF_BOUND;
1034 }
1036 static bool
1037 set_color(int *color, const char *name)
1038 {
1039 if (map_enum(color, color_map, name))
1040 return TRUE;
1041 if (!prefixcmp(name, "color"))
1042 return parse_int(color, name + 5, 0, 255) == OK;
1043 return FALSE;
1044 }
1046 /* Wants: object fgcolor bgcolor [attribute] */
1047 static enum option_code
1048 option_color_command(int argc, const char *argv[])
1049 {
1050 struct line_info *info;
1052 if (argc < 3)
1053 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1055 info = get_line_info(argv[0]);
1056 if (!info) {
1057 static const struct enum_map obsolete[] = {
1058 ENUM_MAP("main-delim", LINE_DELIMITER),
1059 ENUM_MAP("main-date", LINE_DATE),
1060 ENUM_MAP("main-author", LINE_AUTHOR),
1061 };
1062 int index;
1064 if (!map_enum(&index, obsolete, argv[0]))
1065 return OPT_ERR_UNKNOWN_COLOR_NAME;
1066 info = &line_info[index];
1067 }
1069 if (!set_color(&info->fg, argv[1]) ||
1070 !set_color(&info->bg, argv[2]))
1071 return OPT_ERR_UNKNOWN_COLOR;
1073 info->attr = 0;
1074 while (argc-- > 3) {
1075 int attr;
1077 if (!set_attribute(&attr, argv[argc]))
1078 return OPT_ERR_UNKNOWN_ATTRIBUTE;
1079 info->attr |= attr;
1080 }
1082 return OPT_OK;
1083 }
1085 static enum option_code
1086 parse_bool(bool *opt, const char *arg)
1087 {
1088 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1089 ? TRUE : FALSE;
1090 return OPT_OK;
1091 }
1093 static enum option_code
1094 parse_enum_do(unsigned int *opt, const char *arg,
1095 const struct enum_map *map, size_t map_size)
1096 {
1097 bool is_true;
1099 assert(map_size > 1);
1101 if (map_enum_do(map, map_size, (int *) opt, arg))
1102 return OPT_OK;
1104 parse_bool(&is_true, arg);
1105 *opt = is_true ? map[1].value : map[0].value;
1106 return OPT_OK;
1107 }
1109 #define parse_enum(opt, arg, map) \
1110 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1112 static enum option_code
1113 parse_string(char *opt, const char *arg, size_t optsize)
1114 {
1115 int arglen = strlen(arg);
1117 switch (arg[0]) {
1118 case '\"':
1119 case '\'':
1120 if (arglen == 1 || arg[arglen - 1] != arg[0])
1121 return OPT_ERR_UNMATCHED_QUOTATION;
1122 arg += 1; arglen -= 2;
1123 default:
1124 string_ncopy_do(opt, optsize, arg, arglen);
1125 return OPT_OK;
1126 }
1127 }
1129 static enum option_code
1130 parse_args(const char ***args, const char *argv[])
1131 {
1132 if (*args == NULL && !argv_copy(args, argv))
1133 return OPT_ERR_OUT_OF_MEMORY;
1134 return OPT_OK;
1135 }
1137 /* Wants: name = value */
1138 static enum option_code
1139 option_set_command(int argc, const char *argv[])
1140 {
1141 if (argc < 3)
1142 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1144 if (strcmp(argv[1], "="))
1145 return OPT_ERR_NO_VALUE_ASSIGNED;
1147 if (!strcmp(argv[0], "blame-options"))
1148 return parse_args(&opt_blame_argv, argv + 2);
1150 if (argc != 3)
1151 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1153 if (!strcmp(argv[0], "show-author"))
1154 return parse_enum(&opt_author, argv[2], author_map);
1156 if (!strcmp(argv[0], "show-date"))
1157 return parse_enum(&opt_date, argv[2], date_map);
1159 if (!strcmp(argv[0], "show-rev-graph"))
1160 return parse_bool(&opt_rev_graph, argv[2]);
1162 if (!strcmp(argv[0], "show-refs"))
1163 return parse_bool(&opt_show_refs, argv[2]);
1165 if (!strcmp(argv[0], "show-line-numbers"))
1166 return parse_bool(&opt_line_number, argv[2]);
1168 if (!strcmp(argv[0], "line-graphics"))
1169 return parse_enum(&opt_line_graphics, argv[2], graphic_map);
1171 if (!strcmp(argv[0], "line-number-interval"))
1172 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1174 if (!strcmp(argv[0], "author-width"))
1175 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1177 if (!strcmp(argv[0], "horizontal-scroll"))
1178 return parse_step(&opt_hscroll, argv[2]);
1180 if (!strcmp(argv[0], "split-view-height"))
1181 return parse_step(&opt_scale_split_view, argv[2]);
1183 if (!strcmp(argv[0], "tab-size"))
1184 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1186 if (!strcmp(argv[0], "commit-encoding"))
1187 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1189 if (!strcmp(argv[0], "status-untracked-dirs"))
1190 return parse_bool(&opt_untracked_dirs_content, argv[2]);
1192 return OPT_ERR_UNKNOWN_VARIABLE_NAME;
1193 }
1195 /* Wants: mode request key */
1196 static enum option_code
1197 option_bind_command(int argc, const char *argv[])
1198 {
1199 enum request request;
1200 int keymap = -1;
1201 int key;
1203 if (argc < 3)
1204 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1206 if (!set_keymap(&keymap, argv[0]))
1207 return OPT_ERR_UNKNOWN_KEY_MAP;
1209 key = get_key_value(argv[1]);
1210 if (key == ERR)
1211 return OPT_ERR_UNKNOWN_KEY;
1213 request = get_request(argv[2]);
1214 if (request == REQ_UNKNOWN) {
1215 static const struct enum_map obsolete[] = {
1216 ENUM_MAP("cherry-pick", REQ_NONE),
1217 ENUM_MAP("screen-resize", REQ_NONE),
1218 ENUM_MAP("tree-parent", REQ_PARENT),
1219 };
1220 int alias;
1222 if (map_enum(&alias, obsolete, argv[2])) {
1223 if (alias != REQ_NONE)
1224 add_keybinding(keymap, alias, key);
1225 return OPT_ERR_OBSOLETE_REQUEST_NAME;
1226 }
1227 }
1228 if (request == REQ_UNKNOWN && *argv[2]++ == '!')
1229 request = add_run_request(keymap, key, argv + 2);
1230 if (request == REQ_UNKNOWN)
1231 return OPT_ERR_UNKNOWN_REQUEST_NAME;
1233 add_keybinding(keymap, request, key);
1235 return OPT_OK;
1236 }
1238 static enum option_code
1239 set_option(const char *opt, char *value)
1240 {
1241 const char *argv[SIZEOF_ARG];
1242 int argc = 0;
1244 if (!argv_from_string(argv, &argc, value))
1245 return OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
1247 if (!strcmp(opt, "color"))
1248 return option_color_command(argc, argv);
1250 if (!strcmp(opt, "set"))
1251 return option_set_command(argc, argv);
1253 if (!strcmp(opt, "bind"))
1254 return option_bind_command(argc, argv);
1256 return OPT_ERR_UNKNOWN_OPTION_COMMAND;
1257 }
1259 struct config_state {
1260 int lineno;
1261 bool errors;
1262 };
1264 static int
1265 read_option(char *opt, size_t optlen, char *value, size_t valuelen, void *data)
1266 {
1267 struct config_state *config = data;
1268 enum option_code status = OPT_ERR_NO_OPTION_VALUE;
1270 config->lineno++;
1272 /* Check for comment markers, since read_properties() will
1273 * only ensure opt and value are split at first " \t". */
1274 optlen = strcspn(opt, "#");
1275 if (optlen == 0)
1276 return OK;
1278 if (opt[optlen] == 0) {
1279 /* Look for comment endings in the value. */
1280 size_t len = strcspn(value, "#");
1282 if (len < valuelen) {
1283 valuelen = len;
1284 value[valuelen] = 0;
1285 }
1287 status = set_option(opt, value);
1288 }
1290 if (status != OPT_OK) {
1291 warn("Error on line %d, near '%.*s': %s",
1292 config->lineno, (int) optlen, opt, option_errors[status]);
1293 config->errors = TRUE;
1294 }
1296 /* Always keep going if errors are encountered. */
1297 return OK;
1298 }
1300 static void
1301 load_option_file(const char *path)
1302 {
1303 struct config_state config = { 0, FALSE };
1304 struct io io;
1306 /* It's OK that the file doesn't exist. */
1307 if (!io_open(&io, "%s", path))
1308 return;
1310 if (io_load(&io, " \t", read_option, &config) == ERR ||
1311 config.errors == TRUE)
1312 warn("Errors while loading %s.", path);
1313 }
1315 static int
1316 load_options(void)
1317 {
1318 const char *home = getenv("HOME");
1319 const char *tigrc_user = getenv("TIGRC_USER");
1320 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1321 const char *tig_diff_opts = getenv("TIG_DIFF_OPTS");
1322 char buf[SIZEOF_STR];
1324 if (!tigrc_system)
1325 tigrc_system = SYSCONFDIR "/tigrc";
1326 load_option_file(tigrc_system);
1328 if (!tigrc_user) {
1329 if (!home || !string_format(buf, "%s/.tigrc", home))
1330 return ERR;
1331 tigrc_user = buf;
1332 }
1333 load_option_file(tigrc_user);
1335 /* Add _after_ loading config files to avoid adding run requests
1336 * that conflict with keybindings. */
1337 add_builtin_run_requests();
1339 if (!opt_diff_argv && tig_diff_opts && *tig_diff_opts) {
1340 static const char *diff_opts[SIZEOF_ARG] = { NULL };
1341 int argc = 0;
1343 if (!string_format(buf, "%s", tig_diff_opts) ||
1344 !argv_from_string(diff_opts, &argc, buf))
1345 die("TIG_DIFF_OPTS contains too many arguments");
1346 else if (!argv_copy(&opt_diff_argv, diff_opts))
1347 die("Failed to format TIG_DIFF_OPTS arguments");
1348 }
1350 return OK;
1351 }
1354 /*
1355 * The viewer
1356 */
1358 struct view;
1359 struct view_ops;
1361 /* The display array of active views and the index of the current view. */
1362 static struct view *display[2];
1363 static WINDOW *display_win[2];
1364 static WINDOW *display_title[2];
1365 static unsigned int current_view;
1367 #define foreach_displayed_view(view, i) \
1368 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1370 #define displayed_views() (display[1] != NULL ? 2 : 1)
1372 /* Current head and commit ID */
1373 static char ref_blob[SIZEOF_REF] = "";
1374 static char ref_commit[SIZEOF_REF] = "HEAD";
1375 static char ref_head[SIZEOF_REF] = "HEAD";
1376 static char ref_branch[SIZEOF_REF] = "";
1378 enum view_type {
1379 VIEW_MAIN,
1380 VIEW_DIFF,
1381 VIEW_LOG,
1382 VIEW_TREE,
1383 VIEW_BLOB,
1384 VIEW_BLAME,
1385 VIEW_BRANCH,
1386 VIEW_HELP,
1387 VIEW_PAGER,
1388 VIEW_STATUS,
1389 VIEW_STAGE,
1390 };
1392 struct view {
1393 enum view_type type; /* View type */
1394 const char *name; /* View name */
1395 const char *id; /* Points to either of ref_{head,commit,blob} */
1397 struct view_ops *ops; /* View operations */
1399 enum keymap keymap; /* What keymap does this view have */
1400 bool git_dir; /* Whether the view requires a git directory. */
1402 char ref[SIZEOF_REF]; /* Hovered commit reference */
1403 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1405 int height, width; /* The width and height of the main window */
1406 WINDOW *win; /* The main window */
1408 /* Navigation */
1409 unsigned long offset; /* Offset of the window top */
1410 unsigned long yoffset; /* Offset from the window side. */
1411 unsigned long lineno; /* Current line number */
1412 unsigned long p_offset; /* Previous offset of the window top */
1413 unsigned long p_yoffset;/* Previous offset from the window side */
1414 unsigned long p_lineno; /* Previous current line number */
1415 bool p_restore; /* Should the previous position be restored. */
1417 /* Searching */
1418 char grep[SIZEOF_STR]; /* Search string */
1419 regex_t *regex; /* Pre-compiled regexp */
1421 /* If non-NULL, points to the view that opened this view. If this view
1422 * is closed tig will switch back to the parent view. */
1423 struct view *parent;
1424 struct view *prev;
1426 /* Buffering */
1427 size_t lines; /* Total number of lines */
1428 struct line *line; /* Line index */
1429 unsigned int digits; /* Number of digits in the lines member. */
1431 /* Drawing */
1432 struct line *curline; /* Line currently being drawn. */
1433 enum line_type curtype; /* Attribute currently used for drawing. */
1434 unsigned long col; /* Column when drawing. */
1435 bool has_scrolled; /* View was scrolled. */
1437 /* Loading */
1438 const char **argv; /* Shell command arguments. */
1439 const char *dir; /* Directory from which to execute. */
1440 struct io io;
1441 struct io *pipe;
1442 time_t start_time;
1443 time_t update_secs;
1444 };
1446 enum open_flags {
1447 OPEN_DEFAULT = 0, /* Use default view switching. */
1448 OPEN_SPLIT = 1, /* Split current view. */
1449 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1450 OPEN_REFRESH = 16, /* Refresh view using previous command. */
1451 OPEN_PREPARED = 32, /* Open already prepared command. */
1452 OPEN_EXTRA = 64, /* Open extra data from command. */
1453 };
1455 struct view_ops {
1456 /* What type of content being displayed. Used in the title bar. */
1457 const char *type;
1458 /* Open and reads in all view content. */
1459 bool (*open)(struct view *view, enum open_flags flags);
1460 /* Read one line; updates view->line. */
1461 bool (*read)(struct view *view, char *data);
1462 /* Draw one line; @lineno must be < view->height. */
1463 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1464 /* Depending on view handle a special requests. */
1465 enum request (*request)(struct view *view, enum request request, struct line *line);
1466 /* Search for regexp in a line. */
1467 bool (*grep)(struct view *view, struct line *line);
1468 /* Select line */
1469 void (*select)(struct view *view, struct line *line);
1470 };
1472 static struct view_ops blame_ops;
1473 static struct view_ops blob_ops;
1474 static struct view_ops diff_ops;
1475 static struct view_ops help_ops;
1476 static struct view_ops log_ops;
1477 static struct view_ops main_ops;
1478 static struct view_ops pager_ops;
1479 static struct view_ops stage_ops;
1480 static struct view_ops status_ops;
1481 static struct view_ops tree_ops;
1482 static struct view_ops branch_ops;
1484 #define VIEW_STR(type, name, ref, ops, map, git) \
1485 { type, name, ref, ops, map, git }
1487 #define VIEW_(id, name, ops, git, ref) \
1488 VIEW_STR(VIEW_##id, name, ref, ops, KEYMAP_##id, git)
1490 static struct view views[] = {
1491 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1492 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1493 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1494 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1495 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1496 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1497 VIEW_(BRANCH, "branch", &branch_ops, TRUE, ref_head),
1498 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1499 VIEW_(PAGER, "pager", &pager_ops, FALSE, ""),
1500 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1501 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1502 };
1504 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1506 #define foreach_view(view, i) \
1507 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1509 #define view_is_displayed(view) \
1510 (view == display[0] || view == display[1])
1512 static enum request
1513 view_request(struct view *view, enum request request)
1514 {
1515 if (!view || !view->lines)
1516 return request;
1517 return view->ops->request(view, request, &view->line[view->lineno]);
1518 }
1521 /*
1522 * View drawing.
1523 */
1525 static inline void
1526 set_view_attr(struct view *view, enum line_type type)
1527 {
1528 if (!view->curline->selected && view->curtype != type) {
1529 (void) wattrset(view->win, get_line_attr(type));
1530 wchgat(view->win, -1, 0, type, NULL);
1531 view->curtype = type;
1532 }
1533 }
1535 #define VIEW_MAX_LEN(view) ((view)->width + (view)->yoffset - (view)->col)
1537 static bool
1538 draw_chars(struct view *view, enum line_type type, const char *string,
1539 int max_len, bool use_tilde)
1540 {
1541 static char out_buffer[BUFSIZ * 2];
1542 int len = 0;
1543 int col = 0;
1544 int trimmed = FALSE;
1545 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1547 if (max_len <= 0)
1548 return VIEW_MAX_LEN(view) <= 0;
1550 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1552 set_view_attr(view, type);
1553 if (len > 0) {
1554 if (opt_iconv_out != ICONV_NONE) {
1555 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
1556 size_t inlen = len + 1;
1558 char *outbuf = out_buffer;
1559 size_t outlen = sizeof(out_buffer);
1561 size_t ret;
1563 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1564 if (ret != (size_t) -1) {
1565 string = out_buffer;
1566 len = sizeof(out_buffer) - outlen;
1567 }
1568 }
1570 waddnstr(view->win, string, len);
1572 if (trimmed && use_tilde) {
1573 set_view_attr(view, LINE_DELIMITER);
1574 waddch(view->win, '~');
1575 col++;
1576 }
1577 }
1579 view->col += col;
1580 return VIEW_MAX_LEN(view) <= 0;
1581 }
1583 static bool
1584 draw_space(struct view *view, enum line_type type, int max, int spaces)
1585 {
1586 static char space[] = " ";
1588 spaces = MIN(max, spaces);
1590 while (spaces > 0) {
1591 int len = MIN(spaces, sizeof(space) - 1);
1593 if (draw_chars(view, type, space, len, FALSE))
1594 return TRUE;
1595 spaces -= len;
1596 }
1598 return VIEW_MAX_LEN(view) <= 0;
1599 }
1601 static bool
1602 draw_text(struct view *view, enum line_type type, const char *string)
1603 {
1604 char text[SIZEOF_STR];
1606 do {
1607 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1609 if (draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE))
1610 return TRUE;
1611 string += pos;
1612 } while (*string);
1614 return VIEW_MAX_LEN(view) <= 0;
1615 }
1617 static bool
1618 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
1619 {
1620 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1621 int max = VIEW_MAX_LEN(view);
1622 int i;
1624 if (max < size)
1625 size = max;
1627 set_view_attr(view, type);
1628 /* Using waddch() instead of waddnstr() ensures that
1629 * they'll be rendered correctly for the cursor line. */
1630 for (i = skip; i < size; i++)
1631 waddch(view->win, graphic[i]);
1633 view->col += size;
1634 if (separator) {
1635 if (size < max && skip <= size)
1636 waddch(view->win, ' ');
1637 view->col++;
1638 }
1640 return VIEW_MAX_LEN(view) <= 0;
1641 }
1643 static bool
1644 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1645 {
1646 int max = MIN(VIEW_MAX_LEN(view), len);
1647 int col = view->col;
1649 if (!text)
1650 return draw_space(view, type, max, max);
1652 return draw_chars(view, type, text, max - 1, trim)
1653 || draw_space(view, LINE_DEFAULT, max - (view->col - col), max);
1654 }
1656 static bool
1657 draw_date(struct view *view, struct time *time)
1658 {
1659 const char *date = mkdate(time, opt_date);
1660 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
1662 if (opt_date == DATE_NO)
1663 return FALSE;
1665 return draw_field(view, LINE_DATE, date, cols, FALSE);
1666 }
1668 static bool
1669 draw_author(struct view *view, const char *author)
1670 {
1671 bool trim = author_trim(opt_author_cols);
1672 const char *text = mkauthor(author, opt_author_cols, opt_author);
1674 return draw_field(view, LINE_AUTHOR, text, opt_author_cols, trim);
1675 }
1677 static bool
1678 draw_mode(struct view *view, mode_t mode)
1679 {
1680 const char *str;
1682 if (S_ISDIR(mode))
1683 str = "drwxr-xr-x";
1684 else if (S_ISLNK(mode))
1685 str = "lrwxrwxrwx";
1686 else if (S_ISGITLINK(mode))
1687 str = "m---------";
1688 else if (S_ISREG(mode) && mode & S_IXUSR)
1689 str = "-rwxr-xr-x";
1690 else if (S_ISREG(mode))
1691 str = "-rw-r--r--";
1692 else
1693 str = "----------";
1695 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
1696 }
1698 static bool
1699 draw_lineno(struct view *view, unsigned int lineno)
1700 {
1701 char number[10];
1702 int digits3 = view->digits < 3 ? 3 : view->digits;
1703 int max = MIN(VIEW_MAX_LEN(view), digits3);
1704 char *text = NULL;
1705 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
1707 lineno += view->offset + 1;
1708 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1709 static char fmt[] = "%1ld";
1711 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
1712 if (string_format(number, fmt, lineno))
1713 text = number;
1714 }
1715 if (text)
1716 draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
1717 else
1718 draw_space(view, LINE_LINE_NUMBER, max, digits3);
1719 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
1720 }
1722 static bool
1723 draw_refs(struct view *view, struct ref_list *refs)
1724 {
1725 size_t i;
1727 if (!opt_show_refs || !refs)
1728 return FALSE;
1730 for (i = 0; i < refs->size; i++) {
1731 struct ref *ref = refs->refs[i];
1732 enum line_type type;
1734 if (ref->head)
1735 type = LINE_MAIN_HEAD;
1736 else if (ref->ltag)
1737 type = LINE_MAIN_LOCAL_TAG;
1738 else if (ref->tag)
1739 type = LINE_MAIN_TAG;
1740 else if (ref->tracked)
1741 type = LINE_MAIN_TRACKED;
1742 else if (ref->remote)
1743 type = LINE_MAIN_REMOTE;
1744 else
1745 type = LINE_MAIN_REF;
1747 if (draw_text(view, type, "[") ||
1748 draw_text(view, type, ref->name) ||
1749 draw_text(view, type, "]"))
1750 return TRUE;
1752 if (draw_text(view, LINE_DEFAULT, " "))
1753 return TRUE;
1754 }
1756 return FALSE;
1757 }
1759 static bool
1760 draw_view_line(struct view *view, unsigned int lineno)
1761 {
1762 struct line *line;
1763 bool selected = (view->offset + lineno == view->lineno);
1765 assert(view_is_displayed(view));
1767 if (view->offset + lineno >= view->lines)
1768 return FALSE;
1770 line = &view->line[view->offset + lineno];
1772 wmove(view->win, lineno, 0);
1773 if (line->cleareol)
1774 wclrtoeol(view->win);
1775 view->col = 0;
1776 view->curline = line;
1777 view->curtype = LINE_NONE;
1778 line->selected = FALSE;
1779 line->dirty = line->cleareol = 0;
1781 if (selected) {
1782 set_view_attr(view, LINE_CURSOR);
1783 line->selected = TRUE;
1784 view->ops->select(view, line);
1785 }
1787 return view->ops->draw(view, line, lineno);
1788 }
1790 static void
1791 redraw_view_dirty(struct view *view)
1792 {
1793 bool dirty = FALSE;
1794 int lineno;
1796 for (lineno = 0; lineno < view->height; lineno++) {
1797 if (view->offset + lineno >= view->lines)
1798 break;
1799 if (!view->line[view->offset + lineno].dirty)
1800 continue;
1801 dirty = TRUE;
1802 if (!draw_view_line(view, lineno))
1803 break;
1804 }
1806 if (!dirty)
1807 return;
1808 wnoutrefresh(view->win);
1809 }
1811 static void
1812 redraw_view_from(struct view *view, int lineno)
1813 {
1814 assert(0 <= lineno && lineno < view->height);
1816 for (; lineno < view->height; lineno++) {
1817 if (!draw_view_line(view, lineno))
1818 break;
1819 }
1821 wnoutrefresh(view->win);
1822 }
1824 static void
1825 redraw_view(struct view *view)
1826 {
1827 werase(view->win);
1828 redraw_view_from(view, 0);
1829 }
1832 static void
1833 update_view_title(struct view *view)
1834 {
1835 char buf[SIZEOF_STR];
1836 char state[SIZEOF_STR];
1837 size_t bufpos = 0, statelen = 0;
1838 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
1840 assert(view_is_displayed(view));
1842 if (view->type != VIEW_STATUS && view->lines) {
1843 unsigned int view_lines = view->offset + view->height;
1844 unsigned int lines = view->lines
1845 ? MIN(view_lines, view->lines) * 100 / view->lines
1846 : 0;
1848 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
1849 view->ops->type,
1850 view->lineno + 1,
1851 view->lines,
1852 lines);
1854 }
1856 if (view->pipe) {
1857 time_t secs = time(NULL) - view->start_time;
1859 /* Three git seconds are a long time ... */
1860 if (secs > 2)
1861 string_format_from(state, &statelen, " loading %lds", secs);
1862 }
1864 string_format_from(buf, &bufpos, "[%s]", view->name);
1865 if (*view->ref && bufpos < view->width) {
1866 size_t refsize = strlen(view->ref);
1867 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1869 if (minsize < view->width)
1870 refsize = view->width - minsize + 7;
1871 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1872 }
1874 if (statelen && bufpos < view->width) {
1875 string_format_from(buf, &bufpos, "%s", state);
1876 }
1878 if (view == display[current_view])
1879 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
1880 else
1881 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
1883 mvwaddnstr(window, 0, 0, buf, bufpos);
1884 wclrtoeol(window);
1885 wnoutrefresh(window);
1886 }
1888 static int
1889 apply_step(double step, int value)
1890 {
1891 if (step >= 1)
1892 return (int) step;
1893 value *= step + 0.01;
1894 return value ? value : 1;
1895 }
1897 static void
1898 resize_display(void)
1899 {
1900 int offset, i;
1901 struct view *base = display[0];
1902 struct view *view = display[1] ? display[1] : display[0];
1904 /* Setup window dimensions */
1906 getmaxyx(stdscr, base->height, base->width);
1908 /* Make room for the status window. */
1909 base->height -= 1;
1911 if (view != base) {
1912 /* Horizontal split. */
1913 view->width = base->width;
1914 view->height = apply_step(opt_scale_split_view, base->height);
1915 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
1916 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
1917 base->height -= view->height;
1919 /* Make room for the title bar. */
1920 view->height -= 1;
1921 }
1923 /* Make room for the title bar. */
1924 base->height -= 1;
1926 offset = 0;
1928 foreach_displayed_view (view, i) {
1929 if (!display_win[i]) {
1930 display_win[i] = newwin(view->height, view->width, offset, 0);
1931 if (!display_win[i])
1932 die("Failed to create %s view", view->name);
1934 scrollok(display_win[i], FALSE);
1936 display_title[i] = newwin(1, view->width, offset + view->height, 0);
1937 if (!display_title[i])
1938 die("Failed to create title window");
1940 } else {
1941 wresize(display_win[i], view->height, view->width);
1942 mvwin(display_win[i], offset, 0);
1943 mvwin(display_title[i], offset + view->height, 0);
1944 }
1946 view->win = display_win[i];
1948 offset += view->height + 1;
1949 }
1950 }
1952 static void
1953 redraw_display(bool clear)
1954 {
1955 struct view *view;
1956 int i;
1958 foreach_displayed_view (view, i) {
1959 if (clear)
1960 wclear(view->win);
1961 redraw_view(view);
1962 update_view_title(view);
1963 }
1964 }
1967 /*
1968 * Option management
1969 */
1971 #define TOGGLE_MENU \
1972 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
1973 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
1974 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
1975 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
1976 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
1977 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
1979 static void
1980 toggle_option(enum request request)
1981 {
1982 const struct {
1983 enum request request;
1984 const struct enum_map *map;
1985 size_t map_size;
1986 } data[] = {
1987 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
1988 TOGGLE_MENU
1989 #undef TOGGLE_
1990 };
1991 const struct menu_item menu[] = {
1992 #define TOGGLE_(id, key, help, value, map) { key, help, value },
1993 TOGGLE_MENU
1994 #undef TOGGLE_
1995 { 0 }
1996 };
1997 int i = 0;
1999 if (request == REQ_OPTIONS) {
2000 if (!prompt_menu("Toggle option", menu, &i))
2001 return;
2002 } else {
2003 while (i < ARRAY_SIZE(data) && data[i].request != request)
2004 i++;
2005 if (i >= ARRAY_SIZE(data))
2006 die("Invalid request (%d)", request);
2007 }
2009 if (data[i].map != NULL) {
2010 unsigned int *opt = menu[i].data;
2012 *opt = (*opt + 1) % data[i].map_size;
2013 redraw_display(FALSE);
2014 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
2016 } else {
2017 bool *option = menu[i].data;
2019 *option = !*option;
2020 redraw_display(FALSE);
2021 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
2022 }
2023 }
2025 static void
2026 maximize_view(struct view *view, bool redraw)
2027 {
2028 memset(display, 0, sizeof(display));
2029 current_view = 0;
2030 display[current_view] = view;
2031 resize_display();
2032 if (redraw) {
2033 redraw_display(FALSE);
2034 report("");
2035 }
2036 }
2039 /*
2040 * Navigation
2041 */
2043 static bool
2044 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2045 {
2046 if (lineno >= view->lines)
2047 lineno = view->lines > 0 ? view->lines - 1 : 0;
2049 if (offset > lineno || offset + view->height <= lineno) {
2050 unsigned long half = view->height / 2;
2052 if (lineno > half)
2053 offset = lineno - half;
2054 else
2055 offset = 0;
2056 }
2058 if (offset != view->offset || lineno != view->lineno) {
2059 view->offset = offset;
2060 view->lineno = lineno;
2061 return TRUE;
2062 }
2064 return FALSE;
2065 }
2067 /* Scrolling backend */
2068 static void
2069 do_scroll_view(struct view *view, int lines)
2070 {
2071 bool redraw_current_line = FALSE;
2073 /* The rendering expects the new offset. */
2074 view->offset += lines;
2076 assert(0 <= view->offset && view->offset < view->lines);
2077 assert(lines);
2079 /* Move current line into the view. */
2080 if (view->lineno < view->offset) {
2081 view->lineno = view->offset;
2082 redraw_current_line = TRUE;
2083 } else if (view->lineno >= view->offset + view->height) {
2084 view->lineno = view->offset + view->height - 1;
2085 redraw_current_line = TRUE;
2086 }
2088 assert(view->offset <= view->lineno && view->lineno < view->lines);
2090 /* Redraw the whole screen if scrolling is pointless. */
2091 if (view->height < ABS(lines)) {
2092 redraw_view(view);
2094 } else {
2095 int line = lines > 0 ? view->height - lines : 0;
2096 int end = line + ABS(lines);
2098 scrollok(view->win, TRUE);
2099 wscrl(view->win, lines);
2100 scrollok(view->win, FALSE);
2102 while (line < end && draw_view_line(view, line))
2103 line++;
2105 if (redraw_current_line)
2106 draw_view_line(view, view->lineno - view->offset);
2107 wnoutrefresh(view->win);
2108 }
2110 view->has_scrolled = TRUE;
2111 report("");
2112 }
2114 /* Scroll frontend */
2115 static void
2116 scroll_view(struct view *view, enum request request)
2117 {
2118 int lines = 1;
2120 assert(view_is_displayed(view));
2122 switch (request) {
2123 case REQ_SCROLL_FIRST_COL:
2124 view->yoffset = 0;
2125 redraw_view_from(view, 0);
2126 report("");
2127 return;
2128 case REQ_SCROLL_LEFT:
2129 if (view->yoffset == 0) {
2130 report("Cannot scroll beyond the first column");
2131 return;
2132 }
2133 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2134 view->yoffset = 0;
2135 else
2136 view->yoffset -= apply_step(opt_hscroll, view->width);
2137 redraw_view_from(view, 0);
2138 report("");
2139 return;
2140 case REQ_SCROLL_RIGHT:
2141 view->yoffset += apply_step(opt_hscroll, view->width);
2142 redraw_view(view);
2143 report("");
2144 return;
2145 case REQ_SCROLL_PAGE_DOWN:
2146 lines = view->height;
2147 case REQ_SCROLL_LINE_DOWN:
2148 if (view->offset + lines > view->lines)
2149 lines = view->lines - view->offset;
2151 if (lines == 0 || view->offset + view->height >= view->lines) {
2152 report("Cannot scroll beyond the last line");
2153 return;
2154 }
2155 break;
2157 case REQ_SCROLL_PAGE_UP:
2158 lines = view->height;
2159 case REQ_SCROLL_LINE_UP:
2160 if (lines > view->offset)
2161 lines = view->offset;
2163 if (lines == 0) {
2164 report("Cannot scroll beyond the first line");
2165 return;
2166 }
2168 lines = -lines;
2169 break;
2171 default:
2172 die("request %d not handled in switch", request);
2173 }
2175 do_scroll_view(view, lines);
2176 }
2178 /* Cursor moving */
2179 static void
2180 move_view(struct view *view, enum request request)
2181 {
2182 int scroll_steps = 0;
2183 int steps;
2185 switch (request) {
2186 case REQ_MOVE_FIRST_LINE:
2187 steps = -view->lineno;
2188 break;
2190 case REQ_MOVE_LAST_LINE:
2191 steps = view->lines - view->lineno - 1;
2192 break;
2194 case REQ_MOVE_PAGE_UP:
2195 steps = view->height > view->lineno
2196 ? -view->lineno : -view->height;
2197 break;
2199 case REQ_MOVE_PAGE_DOWN:
2200 steps = view->lineno + view->height >= view->lines
2201 ? view->lines - view->lineno - 1 : view->height;
2202 break;
2204 case REQ_MOVE_UP:
2205 steps = -1;
2206 break;
2208 case REQ_MOVE_DOWN:
2209 steps = 1;
2210 break;
2212 default:
2213 die("request %d not handled in switch", request);
2214 }
2216 if (steps <= 0 && view->lineno == 0) {
2217 report("Cannot move beyond the first line");
2218 return;
2220 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2221 report("Cannot move beyond the last line");
2222 return;
2223 }
2225 /* Move the current line */
2226 view->lineno += steps;
2227 assert(0 <= view->lineno && view->lineno < view->lines);
2229 /* Check whether the view needs to be scrolled */
2230 if (view->lineno < view->offset ||
2231 view->lineno >= view->offset + view->height) {
2232 scroll_steps = steps;
2233 if (steps < 0 && -steps > view->offset) {
2234 scroll_steps = -view->offset;
2236 } else if (steps > 0) {
2237 if (view->lineno == view->lines - 1 &&
2238 view->lines > view->height) {
2239 scroll_steps = view->lines - view->offset - 1;
2240 if (scroll_steps >= view->height)
2241 scroll_steps -= view->height - 1;
2242 }
2243 }
2244 }
2246 if (!view_is_displayed(view)) {
2247 view->offset += scroll_steps;
2248 assert(0 <= view->offset && view->offset < view->lines);
2249 view->ops->select(view, &view->line[view->lineno]);
2250 return;
2251 }
2253 /* Repaint the old "current" line if we be scrolling */
2254 if (ABS(steps) < view->height)
2255 draw_view_line(view, view->lineno - steps - view->offset);
2257 if (scroll_steps) {
2258 do_scroll_view(view, scroll_steps);
2259 return;
2260 }
2262 /* Draw the current line */
2263 draw_view_line(view, view->lineno - view->offset);
2265 wnoutrefresh(view->win);
2266 report("");
2267 }
2270 /*
2271 * Searching
2272 */
2274 static void search_view(struct view *view, enum request request);
2276 static bool
2277 grep_text(struct view *view, const char *text[])
2278 {
2279 regmatch_t pmatch;
2280 size_t i;
2282 for (i = 0; text[i]; i++)
2283 if (*text[i] &&
2284 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2285 return TRUE;
2286 return FALSE;
2287 }
2289 static void
2290 select_view_line(struct view *view, unsigned long lineno)
2291 {
2292 unsigned long old_lineno = view->lineno;
2293 unsigned long old_offset = view->offset;
2295 if (goto_view_line(view, view->offset, lineno)) {
2296 if (view_is_displayed(view)) {
2297 if (old_offset != view->offset) {
2298 redraw_view(view);
2299 } else {
2300 draw_view_line(view, old_lineno - view->offset);
2301 draw_view_line(view, view->lineno - view->offset);
2302 wnoutrefresh(view->win);
2303 }
2304 } else {
2305 view->ops->select(view, &view->line[view->lineno]);
2306 }
2307 }
2308 }
2310 static void
2311 find_next(struct view *view, enum request request)
2312 {
2313 unsigned long lineno = view->lineno;
2314 int direction;
2316 if (!*view->grep) {
2317 if (!*opt_search)
2318 report("No previous search");
2319 else
2320 search_view(view, request);
2321 return;
2322 }
2324 switch (request) {
2325 case REQ_SEARCH:
2326 case REQ_FIND_NEXT:
2327 direction = 1;
2328 break;
2330 case REQ_SEARCH_BACK:
2331 case REQ_FIND_PREV:
2332 direction = -1;
2333 break;
2335 default:
2336 return;
2337 }
2339 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2340 lineno += direction;
2342 /* Note, lineno is unsigned long so will wrap around in which case it
2343 * will become bigger than view->lines. */
2344 for (; lineno < view->lines; lineno += direction) {
2345 if (view->ops->grep(view, &view->line[lineno])) {
2346 select_view_line(view, lineno);
2347 report("Line %ld matches '%s'", lineno + 1, view->grep);
2348 return;
2349 }
2350 }
2352 report("No match found for '%s'", view->grep);
2353 }
2355 static void
2356 search_view(struct view *view, enum request request)
2357 {
2358 int regex_err;
2360 if (view->regex) {
2361 regfree(view->regex);
2362 *view->grep = 0;
2363 } else {
2364 view->regex = calloc(1, sizeof(*view->regex));
2365 if (!view->regex)
2366 return;
2367 }
2369 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2370 if (regex_err != 0) {
2371 char buf[SIZEOF_STR] = "unknown error";
2373 regerror(regex_err, view->regex, buf, sizeof(buf));
2374 report("Search failed: %s", buf);
2375 return;
2376 }
2378 string_copy(view->grep, opt_search);
2380 find_next(view, request);
2381 }
2383 /*
2384 * Incremental updating
2385 */
2387 static void
2388 reset_view(struct view *view)
2389 {
2390 int i;
2392 for (i = 0; i < view->lines; i++)
2393 free(view->line[i].data);
2394 free(view->line);
2396 view->p_offset = view->offset;
2397 view->p_yoffset = view->yoffset;
2398 view->p_lineno = view->lineno;
2400 view->line = NULL;
2401 view->offset = 0;
2402 view->yoffset = 0;
2403 view->lines = 0;
2404 view->lineno = 0;
2405 view->vid[0] = 0;
2406 view->update_secs = 0;
2407 }
2409 static const char *
2410 format_arg(const char *name)
2411 {
2412 static struct {
2413 const char *name;
2414 size_t namelen;
2415 const char *value;
2416 const char *value_if_empty;
2417 } vars[] = {
2418 #define FORMAT_VAR(name, value, value_if_empty) \
2419 { name, STRING_SIZE(name), value, value_if_empty }
2420 FORMAT_VAR("%(directory)", opt_path, "."),
2421 FORMAT_VAR("%(file)", opt_file, ""),
2422 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2423 FORMAT_VAR("%(head)", ref_head, ""),
2424 FORMAT_VAR("%(commit)", ref_commit, ""),
2425 FORMAT_VAR("%(blob)", ref_blob, ""),
2426 FORMAT_VAR("%(branch)", ref_branch, ""),
2427 };
2428 int i;
2430 for (i = 0; i < ARRAY_SIZE(vars); i++)
2431 if (!strncmp(name, vars[i].name, vars[i].namelen))
2432 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2434 report("Unknown replacement: `%s`", name);
2435 return NULL;
2436 }
2438 static bool
2439 format_argv(const char ***dst_argv, const char *src_argv[], bool first)
2440 {
2441 char buf[SIZEOF_STR];
2442 int argc;
2444 argv_free(*dst_argv);
2446 for (argc = 0; src_argv[argc]; argc++) {
2447 const char *arg = src_argv[argc];
2448 size_t bufpos = 0;
2450 if (!strcmp(arg, "%(fileargs)")) {
2451 if (!argv_append_array(dst_argv, opt_file_argv))
2452 break;
2453 continue;
2455 } else if (!strcmp(arg, "%(diffargs)")) {
2456 if (!argv_append_array(dst_argv, opt_diff_argv))
2457 break;
2458 continue;
2460 } else if (!strcmp(arg, "%(blameargs)")) {
2461 if (!argv_append_array(dst_argv, opt_blame_argv))
2462 break;
2463 continue;
2465 } else if (!strcmp(arg, "%(revargs)") ||
2466 (first && !strcmp(arg, "%(commit)"))) {
2467 if (!argv_append_array(dst_argv, opt_rev_argv))
2468 break;
2469 continue;
2470 }
2472 while (arg) {
2473 char *next = strstr(arg, "%(");
2474 int len = next - arg;
2475 const char *value;
2477 if (!next) {
2478 len = strlen(arg);
2479 value = "";
2481 } else {
2482 value = format_arg(next);
2484 if (!value) {
2485 return FALSE;
2486 }
2487 }
2489 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2490 return FALSE;
2492 arg = next ? strchr(next, ')') + 1 : NULL;
2493 }
2495 if (!argv_append(dst_argv, buf))
2496 break;
2497 }
2499 return src_argv[argc] == NULL;
2500 }
2502 static bool
2503 restore_view_position(struct view *view)
2504 {
2505 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2506 return FALSE;
2508 /* Changing the view position cancels the restoring. */
2509 /* FIXME: Changing back to the first line is not detected. */
2510 if (view->offset != 0 || view->lineno != 0) {
2511 view->p_restore = FALSE;
2512 return FALSE;
2513 }
2515 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2516 view_is_displayed(view))
2517 werase(view->win);
2519 view->yoffset = view->p_yoffset;
2520 view->p_restore = FALSE;
2522 return TRUE;
2523 }
2525 static void
2526 end_update(struct view *view, bool force)
2527 {
2528 if (!view->pipe)
2529 return;
2530 while (!view->ops->read(view, NULL))
2531 if (!force)
2532 return;
2533 if (force)
2534 io_kill(view->pipe);
2535 io_done(view->pipe);
2536 view->pipe = NULL;
2537 }
2539 static void
2540 setup_update(struct view *view, const char *vid)
2541 {
2542 reset_view(view);
2543 string_copy_rev(view->vid, vid);
2544 view->pipe = &view->io;
2545 view->start_time = time(NULL);
2546 }
2548 static bool
2549 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
2550 {
2551 bool extra = !!(flags & (OPEN_EXTRA));
2552 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED | OPEN_EXTRA));
2553 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2555 if (!reload && !strcmp(view->vid, view->id))
2556 return TRUE;
2558 if (view->pipe) {
2559 if (extra)
2560 io_done(view->pipe);
2561 else
2562 end_update(view, TRUE);
2563 }
2565 if (!refresh) {
2566 view->dir = dir;
2567 if (!format_argv(&view->argv, argv, !view->prev))
2568 return FALSE;
2570 /* Put the current ref_* value to the view title ref
2571 * member. This is needed by the blob view. Most other
2572 * views sets it automatically after loading because the
2573 * first line is a commit line. */
2574 string_copy_rev(view->ref, view->id);
2575 }
2577 if (view->argv && view->argv[0] &&
2578 !io_run(&view->io, IO_RD, view->dir, view->argv))
2579 return FALSE;
2581 if (!extra)
2582 setup_update(view, view->id);
2584 return TRUE;
2585 }
2587 static bool
2588 view_open(struct view *view, enum open_flags flags)
2589 {
2590 return begin_update(view, NULL, NULL, flags);
2591 }
2593 static bool
2594 update_view(struct view *view)
2595 {
2596 char out_buffer[BUFSIZ * 2];
2597 char *line;
2598 /* Clear the view and redraw everything since the tree sorting
2599 * might have rearranged things. */
2600 bool redraw = view->lines == 0;
2601 bool can_read = TRUE;
2603 if (!view->pipe)
2604 return TRUE;
2606 if (!io_can_read(view->pipe, FALSE)) {
2607 if (view->lines == 0 && view_is_displayed(view)) {
2608 time_t secs = time(NULL) - view->start_time;
2610 if (secs > 1 && secs > view->update_secs) {
2611 if (view->update_secs == 0)
2612 redraw_view(view);
2613 update_view_title(view);
2614 view->update_secs = secs;
2615 }
2616 }
2617 return TRUE;
2618 }
2620 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2621 if (opt_iconv_in != ICONV_NONE) {
2622 ICONV_CONST char *inbuf = line;
2623 size_t inlen = strlen(line) + 1;
2625 char *outbuf = out_buffer;
2626 size_t outlen = sizeof(out_buffer);
2628 size_t ret;
2630 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2631 if (ret != (size_t) -1)
2632 line = out_buffer;
2633 }
2635 if (!view->ops->read(view, line)) {
2636 report("Allocation failure");
2637 end_update(view, TRUE);
2638 return FALSE;
2639 }
2640 }
2642 {
2643 unsigned long lines = view->lines;
2644 int digits;
2646 for (digits = 0; lines; digits++)
2647 lines /= 10;
2649 /* Keep the displayed view in sync with line number scaling. */
2650 if (digits != view->digits) {
2651 view->digits = digits;
2652 if (opt_line_number || view->type == VIEW_BLAME)
2653 redraw = TRUE;
2654 }
2655 }
2657 if (io_error(view->pipe)) {
2658 report("Failed to read: %s", io_strerror(view->pipe));
2659 end_update(view, TRUE);
2661 } else if (io_eof(view->pipe)) {
2662 if (view_is_displayed(view))
2663 report("");
2664 end_update(view, FALSE);
2665 }
2667 if (restore_view_position(view))
2668 redraw = TRUE;
2670 if (!view_is_displayed(view))
2671 return TRUE;
2673 if (redraw)
2674 redraw_view_from(view, 0);
2675 else
2676 redraw_view_dirty(view);
2678 /* Update the title _after_ the redraw so that if the redraw picks up a
2679 * commit reference in view->ref it'll be available here. */
2680 update_view_title(view);
2681 return TRUE;
2682 }
2684 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2686 static struct line *
2687 add_line_data(struct view *view, void *data, enum line_type type)
2688 {
2689 struct line *line;
2691 if (!realloc_lines(&view->line, view->lines, 1))
2692 return NULL;
2694 line = &view->line[view->lines++];
2695 memset(line, 0, sizeof(*line));
2696 line->type = type;
2697 line->data = data;
2698 line->dirty = 1;
2700 return line;
2701 }
2703 static struct line *
2704 add_line_text(struct view *view, const char *text, enum line_type type)
2705 {
2706 char *data = text ? strdup(text) : NULL;
2708 return data ? add_line_data(view, data, type) : NULL;
2709 }
2711 static struct line *
2712 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2713 {
2714 char buf[SIZEOF_STR];
2715 va_list args;
2717 va_start(args, fmt);
2718 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2719 buf[0] = 0;
2720 va_end(args);
2722 return buf[0] ? add_line_text(view, buf, type) : NULL;
2723 }
2725 /*
2726 * View opening
2727 */
2729 static void
2730 load_view(struct view *view, enum open_flags flags)
2731 {
2732 if (view->pipe)
2733 end_update(view, TRUE);
2734 if (!view->ops->open(view, flags)) {
2735 report("Failed to load %s view", view->name);
2736 return;
2737 }
2738 restore_view_position(view);
2740 if (view->pipe && view->lines == 0) {
2741 /* Clear the old view and let the incremental updating refill
2742 * the screen. */
2743 werase(view->win);
2744 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2745 report("");
2746 } else if (view_is_displayed(view)) {
2747 redraw_view(view);
2748 report("");
2749 }
2750 }
2752 #define refresh_view(view) load_view(view, OPEN_REFRESH)
2754 static void
2755 split_view(struct view *prev, struct view *view)
2756 {
2757 display[1] = view;
2758 current_view = 1;
2759 view->parent = prev;
2760 resize_display();
2762 if (prev->lineno - prev->offset >= prev->height) {
2763 /* Take the title line into account. */
2764 int lines = prev->lineno - prev->offset - prev->height + 1;
2766 /* Scroll the view that was split if the current line is
2767 * outside the new limited view. */
2768 do_scroll_view(prev, lines);
2769 }
2771 if (view != prev && view_is_displayed(prev)) {
2772 /* "Blur" the previous view. */
2773 update_view_title(prev);
2774 }
2775 }
2777 static void
2778 open_view(struct view *prev, enum request request, enum open_flags flags)
2779 {
2780 bool split = !!(flags & OPEN_SPLIT);
2781 bool reload = !!(flags & (OPEN_RELOAD | OPEN_PREPARED));
2782 struct view *view = VIEW(request);
2783 int nviews = displayed_views();
2785 assert(flags ^ OPEN_REFRESH);
2787 if (view == prev && nviews == 1 && !reload) {
2788 report("Already in %s view", view->name);
2789 return;
2790 }
2792 if (view->git_dir && !opt_git_dir[0]) {
2793 report("The %s view is disabled in pager view", view->name);
2794 return;
2795 }
2797 if (split) {
2798 split_view(prev, view);
2799 } else {
2800 maximize_view(view, FALSE);
2801 }
2803 /* No prev signals that this is the first loaded view. */
2804 if (prev && view != prev) {
2805 view->prev = prev;
2806 }
2808 load_view(view, flags);
2809 }
2811 static void
2812 open_argv(struct view *prev, struct view *view, const char *argv[], const char *dir, enum open_flags flags)
2813 {
2814 enum request request = view - views + REQ_OFFSET + 1;
2816 if (view->pipe)
2817 end_update(view, TRUE);
2818 view->dir = dir;
2820 if (!argv_copy(&view->argv, argv)) {
2821 report("Failed to open %s view: %s", view->name, io_strerror(&view->io));
2822 } else {
2823 open_view(prev, request, flags | OPEN_PREPARED);
2824 }
2825 }
2827 static void
2828 open_file(struct view *prev, struct view *view, const char *file, enum open_flags flags)
2829 {
2830 const char *file_argv[] = { opt_cdup, file , NULL };
2832 open_argv(prev, view, file_argv, opt_cdup, flags);
2833 }
2835 static void
2836 open_external_viewer(const char *argv[], const char *dir)
2837 {
2838 def_prog_mode(); /* save current tty modes */
2839 endwin(); /* restore original tty modes */
2840 io_run_fg(argv, dir);
2841 fprintf(stderr, "Press Enter to continue");
2842 getc(opt_tty);
2843 reset_prog_mode();
2844 redraw_display(TRUE);
2845 }
2847 static void
2848 open_mergetool(const char *file)
2849 {
2850 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2852 open_external_viewer(mergetool_argv, opt_cdup);
2853 }
2855 static void
2856 open_editor(const char *file)
2857 {
2858 const char *editor_argv[] = { "vi", file, NULL };
2859 const char *editor;
2861 editor = getenv("GIT_EDITOR");
2862 if (!editor && *opt_editor)
2863 editor = opt_editor;
2864 if (!editor)
2865 editor = getenv("VISUAL");
2866 if (!editor)
2867 editor = getenv("EDITOR");
2868 if (!editor)
2869 editor = "vi";
2871 editor_argv[0] = editor;
2872 open_external_viewer(editor_argv, opt_cdup);
2873 }
2875 static void
2876 open_run_request(enum request request)
2877 {
2878 struct run_request *req = get_run_request(request);
2879 const char **argv = NULL;
2881 if (!req) {
2882 report("Unknown run request");
2883 return;
2884 }
2886 if (format_argv(&argv, req->argv, FALSE))
2887 open_external_viewer(argv, NULL);
2888 if (argv)
2889 argv_free(argv);
2890 free(argv);
2891 }
2893 /*
2894 * User request switch noodle
2895 */
2897 static int
2898 view_driver(struct view *view, enum request request)
2899 {
2900 int i;
2902 if (request == REQ_NONE)
2903 return TRUE;
2905 if (request > REQ_NONE) {
2906 open_run_request(request);
2907 view_request(view, REQ_REFRESH);
2908 return TRUE;
2909 }
2911 request = view_request(view, request);
2912 if (request == REQ_NONE)
2913 return TRUE;
2915 switch (request) {
2916 case REQ_MOVE_UP:
2917 case REQ_MOVE_DOWN:
2918 case REQ_MOVE_PAGE_UP:
2919 case REQ_MOVE_PAGE_DOWN:
2920 case REQ_MOVE_FIRST_LINE:
2921 case REQ_MOVE_LAST_LINE:
2922 move_view(view, request);
2923 break;
2925 case REQ_SCROLL_FIRST_COL:
2926 case REQ_SCROLL_LEFT:
2927 case REQ_SCROLL_RIGHT:
2928 case REQ_SCROLL_LINE_DOWN:
2929 case REQ_SCROLL_LINE_UP:
2930 case REQ_SCROLL_PAGE_DOWN:
2931 case REQ_SCROLL_PAGE_UP:
2932 scroll_view(view, request);
2933 break;
2935 case REQ_VIEW_BLAME:
2936 if (!opt_file[0]) {
2937 report("No file chosen, press %s to open tree view",
2938 get_key(view->keymap, REQ_VIEW_TREE));
2939 break;
2940 }
2941 open_view(view, request, OPEN_DEFAULT);
2942 break;
2944 case REQ_VIEW_BLOB:
2945 if (!ref_blob[0]) {
2946 report("No file chosen, press %s to open tree view",
2947 get_key(view->keymap, REQ_VIEW_TREE));
2948 break;
2949 }
2950 open_view(view, request, OPEN_DEFAULT);
2951 break;
2953 case REQ_VIEW_PAGER:
2954 if (view == NULL) {
2955 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2956 die("Failed to open stdin");
2957 open_view(view, request, OPEN_PREPARED);
2958 break;
2959 }
2961 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2962 report("No pager content, press %s to run command from prompt",
2963 get_key(view->keymap, REQ_PROMPT));
2964 break;
2965 }
2966 open_view(view, request, OPEN_DEFAULT);
2967 break;
2969 case REQ_VIEW_STAGE:
2970 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2971 report("No stage content, press %s to open the status view and choose file",
2972 get_key(view->keymap, REQ_VIEW_STATUS));
2973 break;
2974 }
2975 open_view(view, request, OPEN_DEFAULT);
2976 break;
2978 case REQ_VIEW_STATUS:
2979 if (opt_is_inside_work_tree == FALSE) {
2980 report("The status view requires a working tree");
2981 break;
2982 }
2983 open_view(view, request, OPEN_DEFAULT);
2984 break;
2986 case REQ_VIEW_MAIN:
2987 case REQ_VIEW_DIFF:
2988 case REQ_VIEW_LOG:
2989 case REQ_VIEW_TREE:
2990 case REQ_VIEW_HELP:
2991 case REQ_VIEW_BRANCH:
2992 open_view(view, request, OPEN_DEFAULT);
2993 break;
2995 case REQ_NEXT:
2996 case REQ_PREVIOUS:
2997 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2999 if (view->parent) {
3000 int line;
3002 view = view->parent;
3003 line = view->lineno;
3004 move_view(view, request);
3005 if (view_is_displayed(view))
3006 update_view_title(view);
3007 if (line != view->lineno)
3008 view_request(view, REQ_ENTER);
3009 } else {
3010 move_view(view, request);
3011 }
3012 break;
3014 case REQ_VIEW_NEXT:
3015 {
3016 int nviews = displayed_views();
3017 int next_view = (current_view + 1) % nviews;
3019 if (next_view == current_view) {
3020 report("Only one view is displayed");
3021 break;
3022 }
3024 current_view = next_view;
3025 /* Blur out the title of the previous view. */
3026 update_view_title(view);
3027 report("");
3028 break;
3029 }
3030 case REQ_REFRESH:
3031 report("Refreshing is not yet supported for the %s view", view->name);
3032 break;
3034 case REQ_MAXIMIZE:
3035 if (displayed_views() == 2)
3036 maximize_view(view, TRUE);
3037 break;
3039 case REQ_OPTIONS:
3040 case REQ_TOGGLE_LINENO:
3041 case REQ_TOGGLE_DATE:
3042 case REQ_TOGGLE_AUTHOR:
3043 case REQ_TOGGLE_GRAPHIC:
3044 case REQ_TOGGLE_REV_GRAPH:
3045 case REQ_TOGGLE_REFS:
3046 toggle_option(request);
3047 break;
3049 case REQ_TOGGLE_SORT_FIELD:
3050 case REQ_TOGGLE_SORT_ORDER:
3051 report("Sorting is not yet supported for the %s view", view->name);
3052 break;
3054 case REQ_SEARCH:
3055 case REQ_SEARCH_BACK:
3056 search_view(view, request);
3057 break;
3059 case REQ_FIND_NEXT:
3060 case REQ_FIND_PREV:
3061 find_next(view, request);
3062 break;
3064 case REQ_STOP_LOADING:
3065 foreach_view(view, i) {
3066 if (view->pipe)
3067 report("Stopped loading the %s view", view->name),
3068 end_update(view, TRUE);
3069 }
3070 break;
3072 case REQ_SHOW_VERSION:
3073 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3074 return TRUE;
3076 case REQ_SCREEN_REDRAW:
3077 redraw_display(TRUE);
3078 break;
3080 case REQ_EDIT:
3081 report("Nothing to edit");
3082 break;
3084 case REQ_ENTER:
3085 report("Nothing to enter");
3086 break;
3088 case REQ_VIEW_CLOSE:
3089 /* XXX: Mark closed views by letting view->prev point to the
3090 * view itself. Parents to closed view should never be
3091 * followed. */
3092 if (view->prev && view->prev != view) {
3093 maximize_view(view->prev, TRUE);
3094 view->prev = view;
3095 break;
3096 }
3097 /* Fall-through */
3098 case REQ_QUIT:
3099 return FALSE;
3101 default:
3102 report("Unknown key, press %s for help",
3103 get_key(view->keymap, REQ_VIEW_HELP));
3104 return TRUE;
3105 }
3107 return TRUE;
3108 }
3111 /*
3112 * View backend utilities
3113 */
3115 enum sort_field {
3116 ORDERBY_NAME,
3117 ORDERBY_DATE,
3118 ORDERBY_AUTHOR,
3119 };
3121 struct sort_state {
3122 const enum sort_field *fields;
3123 size_t size, current;
3124 bool reverse;
3125 };
3127 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3128 #define get_sort_field(state) ((state).fields[(state).current])
3129 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3131 static void
3132 sort_view(struct view *view, enum request request, struct sort_state *state,
3133 int (*compare)(const void *, const void *))
3134 {
3135 switch (request) {
3136 case REQ_TOGGLE_SORT_FIELD:
3137 state->current = (state->current + 1) % state->size;
3138 break;
3140 case REQ_TOGGLE_SORT_ORDER:
3141 state->reverse = !state->reverse;
3142 break;
3143 default:
3144 die("Not a sort request");
3145 }
3147 qsort(view->line, view->lines, sizeof(*view->line), compare);
3148 redraw_view(view);
3149 }
3151 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3153 /* Small author cache to reduce memory consumption. It uses binary
3154 * search to lookup or find place to position new entries. No entries
3155 * are ever freed. */
3156 static const char *
3157 get_author(const char *name)
3158 {
3159 static const char **authors;
3160 static size_t authors_size;
3161 int from = 0, to = authors_size - 1;
3163 while (from <= to) {
3164 size_t pos = (to + from) / 2;
3165 int cmp = strcmp(name, authors[pos]);
3167 if (!cmp)
3168 return authors[pos];
3170 if (cmp < 0)
3171 to = pos - 1;
3172 else
3173 from = pos + 1;
3174 }
3176 if (!realloc_authors(&authors, authors_size, 1))
3177 return NULL;
3178 name = strdup(name);
3179 if (!name)
3180 return NULL;
3182 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3183 authors[from] = name;
3184 authors_size++;
3186 return name;
3187 }
3189 static void
3190 parse_timesec(struct time *time, const char *sec)
3191 {
3192 time->sec = (time_t) atol(sec);
3193 }
3195 static void
3196 parse_timezone(struct time *time, const char *zone)
3197 {
3198 long tz;
3200 tz = ('0' - zone[1]) * 60 * 60 * 10;
3201 tz += ('0' - zone[2]) * 60 * 60;
3202 tz += ('0' - zone[3]) * 60 * 10;
3203 tz += ('0' - zone[4]) * 60;
3205 if (zone[0] == '-')
3206 tz = -tz;
3208 time->tz = tz;
3209 time->sec -= tz;
3210 }
3212 /* Parse author lines where the name may be empty:
3213 * author <email@address.tld> 1138474660 +0100
3214 */
3215 static void
3216 parse_author_line(char *ident, const char **author, struct time *time)
3217 {
3218 char *nameend = strchr(ident, '<');
3219 char *emailend = strchr(ident, '>');
3221 if (nameend && emailend)
3222 *nameend = *emailend = 0;
3223 ident = chomp_string(ident);
3224 if (!*ident) {
3225 if (nameend)
3226 ident = chomp_string(nameend + 1);
3227 if (!*ident)
3228 ident = "Unknown";
3229 }
3231 *author = get_author(ident);
3233 /* Parse epoch and timezone */
3234 if (emailend && emailend[1] == ' ') {
3235 char *secs = emailend + 2;
3236 char *zone = strchr(secs, ' ');
3238 parse_timesec(time, secs);
3240 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3241 parse_timezone(time, zone + 1);
3242 }
3243 }
3245 /*
3246 * Pager backend
3247 */
3249 static bool
3250 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3251 {
3252 if (opt_line_number && draw_lineno(view, lineno))
3253 return TRUE;
3255 draw_text(view, line->type, line->data);
3256 return TRUE;
3257 }
3259 static bool
3260 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3261 {
3262 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3263 char ref[SIZEOF_STR];
3265 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3266 return TRUE;
3268 /* This is the only fatal call, since it can "corrupt" the buffer. */
3269 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3270 return FALSE;
3272 return TRUE;
3273 }
3275 static void
3276 add_pager_refs(struct view *view, struct line *line)
3277 {
3278 char buf[SIZEOF_STR];
3279 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3280 struct ref_list *list;
3281 size_t bufpos = 0, i;
3282 const char *sep = "Refs: ";
3283 bool is_tag = FALSE;
3285 assert(line->type == LINE_COMMIT);
3287 list = get_ref_list(commit_id);
3288 if (!list) {
3289 if (view->type == VIEW_DIFF)
3290 goto try_add_describe_ref;
3291 return;
3292 }
3294 for (i = 0; i < list->size; i++) {
3295 struct ref *ref = list->refs[i];
3296 const char *fmt = ref->tag ? "%s[%s]" :
3297 ref->remote ? "%s<%s>" : "%s%s";
3299 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3300 return;
3301 sep = ", ";
3302 if (ref->tag)
3303 is_tag = TRUE;
3304 }
3306 if (!is_tag && view->type == VIEW_DIFF) {
3307 try_add_describe_ref:
3308 /* Add <tag>-g<commit_id> "fake" reference. */
3309 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3310 return;
3311 }
3313 if (bufpos == 0)
3314 return;
3316 add_line_text(view, buf, LINE_PP_REFS);
3317 }
3319 static bool
3320 pager_read(struct view *view, char *data)
3321 {
3322 struct line *line;
3324 if (!data)
3325 return TRUE;
3327 line = add_line_text(view, data, get_line_type(data));
3328 if (!line)
3329 return FALSE;
3331 if (line->type == LINE_COMMIT &&
3332 (view->type == VIEW_DIFF ||
3333 view->type == VIEW_LOG))
3334 add_pager_refs(view, line);
3336 return TRUE;
3337 }
3339 static enum request
3340 pager_request(struct view *view, enum request request, struct line *line)
3341 {
3342 int split = 0;
3344 if (request != REQ_ENTER)
3345 return request;
3347 if (line->type == LINE_COMMIT &&
3348 (view->type == VIEW_LOG ||
3349 view->type == VIEW_PAGER)) {
3350 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3351 split = 1;
3352 }
3354 /* Always scroll the view even if it was split. That way
3355 * you can use Enter to scroll through the log view and
3356 * split open each commit diff. */
3357 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3359 /* FIXME: A minor workaround. Scrolling the view will call report("")
3360 * but if we are scrolling a non-current view this won't properly
3361 * update the view title. */
3362 if (split)
3363 update_view_title(view);
3365 return REQ_NONE;
3366 }
3368 static bool
3369 pager_grep(struct view *view, struct line *line)
3370 {
3371 const char *text[] = { line->data, NULL };
3373 return grep_text(view, text);
3374 }
3376 static void
3377 pager_select(struct view *view, struct line *line)
3378 {
3379 if (line->type == LINE_COMMIT) {
3380 char *text = (char *)line->data + STRING_SIZE("commit ");
3382 if (view->type != VIEW_PAGER)
3383 string_copy_rev(view->ref, text);
3384 string_copy_rev(ref_commit, text);
3385 }
3386 }
3388 static struct view_ops pager_ops = {
3389 "line",
3390 view_open,
3391 pager_read,
3392 pager_draw,
3393 pager_request,
3394 pager_grep,
3395 pager_select,
3396 };
3398 static bool
3399 log_open(struct view *view, enum open_flags flags)
3400 {
3401 static const char *log_argv[] = {
3402 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3403 };
3405 return begin_update(view, NULL, log_argv, flags);
3406 }
3408 static enum request
3409 log_request(struct view *view, enum request request, struct line *line)
3410 {
3411 switch (request) {
3412 case REQ_REFRESH:
3413 load_refs();
3414 refresh_view(view);
3415 return REQ_NONE;
3416 default:
3417 return pager_request(view, request, line);
3418 }
3419 }
3421 static struct view_ops log_ops = {
3422 "line",
3423 log_open,
3424 pager_read,
3425 pager_draw,
3426 log_request,
3427 pager_grep,
3428 pager_select,
3429 };
3431 static bool
3432 diff_open(struct view *view, enum open_flags flags)
3433 {
3434 static const char *diff_argv[] = {
3435 "git", "show", "--pretty=fuller", "--no-color", "--root",
3436 "--patch-with-stat", "--find-copies-harder", "-C",
3437 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3438 };
3440 return begin_update(view, NULL, diff_argv, flags);
3441 }
3443 static bool
3444 diff_read(struct view *view, char *data)
3445 {
3446 if (!data) {
3447 /* Fall back to retry if no diff will be shown. */
3448 if (view->lines == 0 && opt_file_argv) {
3449 int pos = argv_size(view->argv)
3450 - argv_size(opt_file_argv) - 1;
3452 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3453 for (; view->argv[pos]; pos++) {
3454 free((void *) view->argv[pos]);
3455 view->argv[pos] = NULL;
3456 }
3458 if (view->pipe)
3459 io_done(view->pipe);
3460 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3461 return FALSE;
3462 }
3463 }
3464 return TRUE;
3465 }
3467 return pager_read(view, data);
3468 }
3470 static struct view_ops diff_ops = {
3471 "line",
3472 diff_open,
3473 diff_read,
3474 pager_draw,
3475 pager_request,
3476 pager_grep,
3477 pager_select,
3478 };
3480 /*
3481 * Help backend
3482 */
3484 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
3486 static bool
3487 help_open_keymap_title(struct view *view, enum keymap keymap)
3488 {
3489 struct line *line;
3491 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3492 help_keymap_hidden[keymap] ? '+' : '-',
3493 enum_name(keymap_table[keymap]));
3494 if (line)
3495 line->other = keymap;
3497 return help_keymap_hidden[keymap];
3498 }
3500 static void
3501 help_open_keymap(struct view *view, enum keymap keymap)
3502 {
3503 const char *group = NULL;
3504 char buf[SIZEOF_STR];
3505 size_t bufpos;
3506 bool add_title = TRUE;
3507 int i;
3509 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3510 const char *key = NULL;
3512 if (req_info[i].request == REQ_NONE)
3513 continue;
3515 if (!req_info[i].request) {
3516 group = req_info[i].help;
3517 continue;
3518 }
3520 key = get_keys(keymap, req_info[i].request, TRUE);
3521 if (!key || !*key)
3522 continue;
3524 if (add_title && help_open_keymap_title(view, keymap))
3525 return;
3526 add_title = FALSE;
3528 if (group) {
3529 add_line_text(view, group, LINE_HELP_GROUP);
3530 group = NULL;
3531 }
3533 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3534 enum_name(req_info[i]), req_info[i].help);
3535 }
3537 group = "External commands:";
3539 for (i = 0; i < run_requests; i++) {
3540 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3541 const char *key;
3542 int argc;
3544 if (!req || req->keymap != keymap)
3545 continue;
3547 key = get_key_name(req->key);
3548 if (!*key)
3549 key = "(no key defined)";
3551 if (add_title && help_open_keymap_title(view, keymap))
3552 return;
3553 if (group) {
3554 add_line_text(view, group, LINE_HELP_GROUP);
3555 group = NULL;
3556 }
3558 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3559 if (!string_format_from(buf, &bufpos, "%s%s",
3560 argc ? " " : "", req->argv[argc]))
3561 return;
3563 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3564 }
3565 }
3567 static bool
3568 help_open(struct view *view, enum open_flags flags)
3569 {
3570 enum keymap keymap;
3572 reset_view(view);
3573 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3574 add_line_text(view, "", LINE_DEFAULT);
3576 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
3577 help_open_keymap(view, keymap);
3579 return TRUE;
3580 }
3582 static enum request
3583 help_request(struct view *view, enum request request, struct line *line)
3584 {
3585 switch (request) {
3586 case REQ_ENTER:
3587 if (line->type == LINE_HELP_KEYMAP) {
3588 help_keymap_hidden[line->other] =
3589 !help_keymap_hidden[line->other];
3590 refresh_view(view);
3591 }
3593 return REQ_NONE;
3594 default:
3595 return pager_request(view, request, line);
3596 }
3597 }
3599 static struct view_ops help_ops = {
3600 "line",
3601 help_open,
3602 NULL,
3603 pager_draw,
3604 help_request,
3605 pager_grep,
3606 pager_select,
3607 };
3610 /*
3611 * Tree backend
3612 */
3614 struct tree_stack_entry {
3615 struct tree_stack_entry *prev; /* Entry below this in the stack */
3616 unsigned long lineno; /* Line number to restore */
3617 char *name; /* Position of name in opt_path */
3618 };
3620 /* The top of the path stack. */
3621 static struct tree_stack_entry *tree_stack = NULL;
3622 unsigned long tree_lineno = 0;
3624 static void
3625 pop_tree_stack_entry(void)
3626 {
3627 struct tree_stack_entry *entry = tree_stack;
3629 tree_lineno = entry->lineno;
3630 entry->name[0] = 0;
3631 tree_stack = entry->prev;
3632 free(entry);
3633 }
3635 static void
3636 push_tree_stack_entry(const char *name, unsigned long lineno)
3637 {
3638 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3639 size_t pathlen = strlen(opt_path);
3641 if (!entry)
3642 return;
3644 entry->prev = tree_stack;
3645 entry->name = opt_path + pathlen;
3646 tree_stack = entry;
3648 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3649 pop_tree_stack_entry();
3650 return;
3651 }
3653 /* Move the current line to the first tree entry. */
3654 tree_lineno = 1;
3655 entry->lineno = lineno;
3656 }
3658 /* Parse output from git-ls-tree(1):
3659 *
3660 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3661 */
3663 #define SIZEOF_TREE_ATTR \
3664 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3666 #define SIZEOF_TREE_MODE \
3667 STRING_SIZE("100644 ")
3669 #define TREE_ID_OFFSET \
3670 STRING_SIZE("100644 blob ")
3672 struct tree_entry {
3673 char id[SIZEOF_REV];
3674 mode_t mode;
3675 struct time time; /* Date from the author ident. */
3676 const char *author; /* Author of the commit. */
3677 char name[1];
3678 };
3680 static const char *
3681 tree_path(const struct line *line)
3682 {
3683 return ((struct tree_entry *) line->data)->name;
3684 }
3686 static int
3687 tree_compare_entry(const struct line *line1, const struct line *line2)
3688 {
3689 if (line1->type != line2->type)
3690 return line1->type == LINE_TREE_DIR ? -1 : 1;
3691 return strcmp(tree_path(line1), tree_path(line2));
3692 }
3694 static const enum sort_field tree_sort_fields[] = {
3695 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3696 };
3697 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3699 static int
3700 tree_compare(const void *l1, const void *l2)
3701 {
3702 const struct line *line1 = (const struct line *) l1;
3703 const struct line *line2 = (const struct line *) l2;
3704 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3705 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3707 if (line1->type == LINE_TREE_HEAD)
3708 return -1;
3709 if (line2->type == LINE_TREE_HEAD)
3710 return 1;
3712 switch (get_sort_field(tree_sort_state)) {
3713 case ORDERBY_DATE:
3714 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3716 case ORDERBY_AUTHOR:
3717 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3719 case ORDERBY_NAME:
3720 default:
3721 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3722 }
3723 }
3726 static struct line *
3727 tree_entry(struct view *view, enum line_type type, const char *path,
3728 const char *mode, const char *id)
3729 {
3730 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3731 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3733 if (!entry || !line) {
3734 free(entry);
3735 return NULL;
3736 }
3738 strncpy(entry->name, path, strlen(path));
3739 if (mode)
3740 entry->mode = strtoul(mode, NULL, 8);
3741 if (id)
3742 string_copy_rev(entry->id, id);
3744 return line;
3745 }
3747 static bool
3748 tree_read_date(struct view *view, char *text, bool *read_date)
3749 {
3750 static const char *author_name;
3751 static struct time author_time;
3753 if (!text && *read_date) {
3754 *read_date = FALSE;
3755 return TRUE;
3757 } else if (!text) {
3758 /* Find next entry to process */
3759 const char *log_file[] = {
3760 "git", "log", "--no-color", "--pretty=raw",
3761 "--cc", "--raw", view->id, "--", "%(directory)", NULL
3762 };
3764 if (!view->lines) {
3765 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3766 report("Tree is empty");
3767 return TRUE;
3768 }
3770 if (!begin_update(view, opt_cdup, log_file, OPEN_EXTRA)) {
3771 report("Failed to load tree data");
3772 return TRUE;
3773 }
3775 *read_date = TRUE;
3776 return FALSE;
3778 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3779 parse_author_line(text + STRING_SIZE("author "),
3780 &author_name, &author_time);
3782 } else if (*text == ':') {
3783 char *pos;
3784 size_t annotated = 1;
3785 size_t i;
3787 pos = strchr(text, '\t');
3788 if (!pos)
3789 return TRUE;
3790 text = pos + 1;
3791 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3792 text += strlen(opt_path);
3793 pos = strchr(text, '/');
3794 if (pos)
3795 *pos = 0;
3797 for (i = 1; i < view->lines; i++) {
3798 struct line *line = &view->line[i];
3799 struct tree_entry *entry = line->data;
3801 annotated += !!entry->author;
3802 if (entry->author || strcmp(entry->name, text))
3803 continue;
3805 entry->author = author_name;
3806 entry->time = author_time;
3807 line->dirty = 1;
3808 break;
3809 }
3811 if (annotated == view->lines)
3812 io_kill(view->pipe);
3813 }
3814 return TRUE;
3815 }
3817 static bool
3818 tree_read(struct view *view, char *text)
3819 {
3820 static bool read_date = FALSE;
3821 struct tree_entry *data;
3822 struct line *entry, *line;
3823 enum line_type type;
3824 size_t textlen = text ? strlen(text) : 0;
3825 char *path = text + SIZEOF_TREE_ATTR;
3827 if (read_date || !text)
3828 return tree_read_date(view, text, &read_date);
3830 if (textlen <= SIZEOF_TREE_ATTR)
3831 return FALSE;
3832 if (view->lines == 0 &&
3833 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3834 return FALSE;
3836 /* Strip the path part ... */
3837 if (*opt_path) {
3838 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3839 size_t striplen = strlen(opt_path);
3841 if (pathlen > striplen)
3842 memmove(path, path + striplen,
3843 pathlen - striplen + 1);
3845 /* Insert "link" to parent directory. */
3846 if (view->lines == 1 &&
3847 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3848 return FALSE;
3849 }
3851 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3852 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3853 if (!entry)
3854 return FALSE;
3855 data = entry->data;
3857 /* Skip "Directory ..." and ".." line. */
3858 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3859 if (tree_compare_entry(line, entry) <= 0)
3860 continue;
3862 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3864 line->data = data;
3865 line->type = type;
3866 for (; line <= entry; line++)
3867 line->dirty = line->cleareol = 1;
3868 return TRUE;
3869 }
3871 if (tree_lineno > view->lineno) {
3872 view->lineno = tree_lineno;
3873 tree_lineno = 0;
3874 }
3876 return TRUE;
3877 }
3879 static bool
3880 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3881 {
3882 struct tree_entry *entry = line->data;
3884 if (line->type == LINE_TREE_HEAD) {
3885 if (draw_text(view, line->type, "Directory path /"))
3886 return TRUE;
3887 } else {
3888 if (draw_mode(view, entry->mode))
3889 return TRUE;
3891 if (draw_author(view, entry->author))
3892 return TRUE;
3894 if (draw_date(view, &entry->time))
3895 return TRUE;
3896 }
3898 draw_text(view, line->type, entry->name);
3899 return TRUE;
3900 }
3902 static void
3903 open_blob_editor(const char *id)
3904 {
3905 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3906 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3907 int fd = mkstemp(file);
3909 if (fd == -1)
3910 report("Failed to create temporary file");
3911 else if (!io_run_append(blob_argv, fd))
3912 report("Failed to save blob data to file");
3913 else
3914 open_editor(file);
3915 if (fd != -1)
3916 unlink(file);
3917 }
3919 static enum request
3920 tree_request(struct view *view, enum request request, struct line *line)
3921 {
3922 enum open_flags flags;
3923 struct tree_entry *entry = line->data;
3925 switch (request) {
3926 case REQ_VIEW_BLAME:
3927 if (line->type != LINE_TREE_FILE) {
3928 report("Blame only supported for files");
3929 return REQ_NONE;
3930 }
3932 string_copy(opt_ref, view->vid);
3933 return request;
3935 case REQ_EDIT:
3936 if (line->type != LINE_TREE_FILE) {
3937 report("Edit only supported for files");
3938 } else if (!is_head_commit(view->vid)) {
3939 open_blob_editor(entry->id);
3940 } else {
3941 open_editor(opt_file);
3942 }
3943 return REQ_NONE;
3945 case REQ_TOGGLE_SORT_FIELD:
3946 case REQ_TOGGLE_SORT_ORDER:
3947 sort_view(view, request, &tree_sort_state, tree_compare);
3948 return REQ_NONE;
3950 case REQ_PARENT:
3951 if (!*opt_path) {
3952 /* quit view if at top of tree */
3953 return REQ_VIEW_CLOSE;
3954 }
3955 /* fake 'cd ..' */
3956 line = &view->line[1];
3957 break;
3959 case REQ_ENTER:
3960 break;
3962 default:
3963 return request;
3964 }
3966 /* Cleanup the stack if the tree view is at a different tree. */
3967 while (!*opt_path && tree_stack)
3968 pop_tree_stack_entry();
3970 switch (line->type) {
3971 case LINE_TREE_DIR:
3972 /* Depending on whether it is a subdirectory or parent link
3973 * mangle the path buffer. */
3974 if (line == &view->line[1] && *opt_path) {
3975 pop_tree_stack_entry();
3977 } else {
3978 const char *basename = tree_path(line);
3980 push_tree_stack_entry(basename, view->lineno);
3981 }
3983 /* Trees and subtrees share the same ID, so they are not not
3984 * unique like blobs. */
3985 flags = OPEN_RELOAD;
3986 request = REQ_VIEW_TREE;
3987 break;
3989 case LINE_TREE_FILE:
3990 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3991 request = REQ_VIEW_BLOB;
3992 break;
3994 default:
3995 return REQ_NONE;
3996 }
3998 open_view(view, request, flags);
3999 if (request == REQ_VIEW_TREE)
4000 view->lineno = tree_lineno;
4002 return REQ_NONE;
4003 }
4005 static bool
4006 tree_grep(struct view *view, struct line *line)
4007 {
4008 struct tree_entry *entry = line->data;
4009 const char *text[] = {
4010 entry->name,
4011 opt_author ? entry->author : "",
4012 mkdate(&entry->time, opt_date),
4013 NULL
4014 };
4016 return grep_text(view, text);
4017 }
4019 static void
4020 tree_select(struct view *view, struct line *line)
4021 {
4022 struct tree_entry *entry = line->data;
4024 if (line->type == LINE_TREE_FILE) {
4025 string_copy_rev(ref_blob, entry->id);
4026 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4028 } else if (line->type != LINE_TREE_DIR) {
4029 return;
4030 }
4032 string_copy_rev(view->ref, entry->id);
4033 }
4035 static bool
4036 tree_open(struct view *view, enum open_flags flags)
4037 {
4038 static const char *tree_argv[] = {
4039 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4040 };
4042 if (view->lines == 0 && opt_prefix[0]) {
4043 char *pos = opt_prefix;
4045 while (pos && *pos) {
4046 char *end = strchr(pos, '/');
4048 if (end)
4049 *end = 0;
4050 push_tree_stack_entry(pos, 0);
4051 pos = end;
4052 if (end) {
4053 *end = '/';
4054 pos++;
4055 }
4056 }
4058 } else if (strcmp(view->vid, view->id)) {
4059 opt_path[0] = 0;
4060 }
4062 return begin_update(view, opt_cdup, tree_argv, flags);
4063 }
4065 static struct view_ops tree_ops = {
4066 "file",
4067 tree_open,
4068 tree_read,
4069 tree_draw,
4070 tree_request,
4071 tree_grep,
4072 tree_select,
4073 };
4075 static bool
4076 blob_open(struct view *view, enum open_flags flags)
4077 {
4078 static const char *blob_argv[] = {
4079 "git", "cat-file", "blob", "%(blob)", NULL
4080 };
4082 return begin_update(view, NULL, blob_argv, flags);
4083 }
4085 static bool
4086 blob_read(struct view *view, char *line)
4087 {
4088 if (!line)
4089 return TRUE;
4090 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4091 }
4093 static enum request
4094 blob_request(struct view *view, enum request request, struct line *line)
4095 {
4096 switch (request) {
4097 case REQ_EDIT:
4098 open_blob_editor(view->vid);
4099 return REQ_NONE;
4100 default:
4101 return pager_request(view, request, line);
4102 }
4103 }
4105 static struct view_ops blob_ops = {
4106 "line",
4107 blob_open,
4108 blob_read,
4109 pager_draw,
4110 blob_request,
4111 pager_grep,
4112 pager_select,
4113 };
4115 /*
4116 * Blame backend
4117 *
4118 * Loading the blame view is a two phase job:
4119 *
4120 * 1. File content is read either using opt_file from the
4121 * filesystem or using git-cat-file.
4122 * 2. Then blame information is incrementally added by
4123 * reading output from git-blame.
4124 */
4126 struct blame_commit {
4127 char id[SIZEOF_REV]; /* SHA1 ID. */
4128 char title[128]; /* First line of the commit message. */
4129 const char *author; /* Author of the commit. */
4130 struct time time; /* Date from the author ident. */
4131 char filename[128]; /* Name of file. */
4132 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4133 char parent_filename[128]; /* Parent/previous name of file. */
4134 };
4136 struct blame {
4137 struct blame_commit *commit;
4138 unsigned long lineno;
4139 char text[1];
4140 };
4142 static bool
4143 blame_open(struct view *view, enum open_flags flags)
4144 {
4145 const char *file_argv[] = { opt_cdup, opt_file , NULL };
4146 char path[SIZEOF_STR];
4147 size_t i;
4149 if (!view->prev && *opt_prefix) {
4150 string_copy(path, opt_file);
4151 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4152 return FALSE;
4153 }
4155 if (*opt_ref || !begin_update(view, opt_cdup, file_argv, flags)) {
4156 const char *blame_cat_file_argv[] = {
4157 "git", "cat-file", "blob", path, NULL
4158 };
4160 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4161 !begin_update(view, opt_cdup, blame_cat_file_argv, flags))
4162 return FALSE;
4163 }
4165 /* First pass: remove multiple references to the same commit. */
4166 for (i = 0; i < view->lines; i++) {
4167 struct blame *blame = view->line[i].data;
4169 if (blame->commit && blame->commit->id[0])
4170 blame->commit->id[0] = 0;
4171 else
4172 blame->commit = NULL;
4173 }
4175 /* Second pass: free existing references. */
4176 for (i = 0; i < view->lines; i++) {
4177 struct blame *blame = view->line[i].data;
4179 if (blame->commit)
4180 free(blame->commit);
4181 }
4183 string_format(view->vid, "%s:%s", opt_ref, opt_file);
4184 string_format(view->ref, "%s ...", opt_file);
4186 return TRUE;
4187 }
4189 static struct blame_commit *
4190 get_blame_commit(struct view *view, const char *id)
4191 {
4192 size_t i;
4194 for (i = 0; i < view->lines; i++) {
4195 struct blame *blame = view->line[i].data;
4197 if (!blame->commit)
4198 continue;
4200 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4201 return blame->commit;
4202 }
4204 {
4205 struct blame_commit *commit = calloc(1, sizeof(*commit));
4207 if (commit)
4208 string_ncopy(commit->id, id, SIZEOF_REV);
4209 return commit;
4210 }
4211 }
4213 static bool
4214 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4215 {
4216 const char *pos = *posref;
4218 *posref = NULL;
4219 pos = strchr(pos + 1, ' ');
4220 if (!pos || !isdigit(pos[1]))
4221 return FALSE;
4222 *number = atoi(pos + 1);
4223 if (*number < min || *number > max)
4224 return FALSE;
4226 *posref = pos;
4227 return TRUE;
4228 }
4230 static struct blame_commit *
4231 parse_blame_commit(struct view *view, const char *text, int *blamed)
4232 {
4233 struct blame_commit *commit;
4234 struct blame *blame;
4235 const char *pos = text + SIZEOF_REV - 2;
4236 size_t orig_lineno = 0;
4237 size_t lineno;
4238 size_t group;
4240 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4241 return NULL;
4243 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4244 !parse_number(&pos, &lineno, 1, view->lines) ||
4245 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4246 return NULL;
4248 commit = get_blame_commit(view, text);
4249 if (!commit)
4250 return NULL;
4252 *blamed += group;
4253 while (group--) {
4254 struct line *line = &view->line[lineno + group - 1];
4256 blame = line->data;
4257 blame->commit = commit;
4258 blame->lineno = orig_lineno + group - 1;
4259 line->dirty = 1;
4260 }
4262 return commit;
4263 }
4265 static bool
4266 blame_read_file(struct view *view, const char *line, bool *read_file)
4267 {
4268 if (!line) {
4269 const char *blame_argv[] = {
4270 "git", "blame", "%(blameargs)", "--incremental",
4271 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4272 };
4274 if (view->lines == 0 && !view->prev)
4275 die("No blame exist for %s", view->vid);
4277 if (view->lines == 0 || !begin_update(view, opt_cdup, blame_argv, OPEN_EXTRA)) {
4278 report("Failed to load blame data");
4279 return TRUE;
4280 }
4282 *read_file = FALSE;
4283 return FALSE;
4285 } else {
4286 size_t linelen = strlen(line);
4287 struct blame *blame = malloc(sizeof(*blame) + linelen);
4289 if (!blame)
4290 return FALSE;
4292 blame->commit = NULL;
4293 strncpy(blame->text, line, linelen);
4294 blame->text[linelen] = 0;
4295 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4296 }
4297 }
4299 static bool
4300 match_blame_header(const char *name, char **line)
4301 {
4302 size_t namelen = strlen(name);
4303 bool matched = !strncmp(name, *line, namelen);
4305 if (matched)
4306 *line += namelen;
4308 return matched;
4309 }
4311 static bool
4312 blame_read(struct view *view, char *line)
4313 {
4314 static struct blame_commit *commit = NULL;
4315 static int blamed = 0;
4316 static bool read_file = TRUE;
4318 if (read_file)
4319 return blame_read_file(view, line, &read_file);
4321 if (!line) {
4322 /* Reset all! */
4323 commit = NULL;
4324 blamed = 0;
4325 read_file = TRUE;
4326 string_format(view->ref, "%s", view->vid);
4327 if (view_is_displayed(view)) {
4328 update_view_title(view);
4329 redraw_view_from(view, 0);
4330 }
4331 return TRUE;
4332 }
4334 if (!commit) {
4335 commit = parse_blame_commit(view, line, &blamed);
4336 string_format(view->ref, "%s %2d%%", view->vid,
4337 view->lines ? blamed * 100 / view->lines : 0);
4339 } else if (match_blame_header("author ", &line)) {
4340 commit->author = get_author(line);
4342 } else if (match_blame_header("author-time ", &line)) {
4343 parse_timesec(&commit->time, line);
4345 } else if (match_blame_header("author-tz ", &line)) {
4346 parse_timezone(&commit->time, line);
4348 } else if (match_blame_header("summary ", &line)) {
4349 string_ncopy(commit->title, line, strlen(line));
4351 } else if (match_blame_header("previous ", &line)) {
4352 if (strlen(line) <= SIZEOF_REV)
4353 return FALSE;
4354 string_copy_rev(commit->parent_id, line);
4355 line += SIZEOF_REV;
4356 string_ncopy(commit->parent_filename, line, strlen(line));
4358 } else if (match_blame_header("filename ", &line)) {
4359 string_ncopy(commit->filename, line, strlen(line));
4360 commit = NULL;
4361 }
4363 return TRUE;
4364 }
4366 static bool
4367 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4368 {
4369 struct blame *blame = line->data;
4370 struct time *time = NULL;
4371 const char *id = NULL, *author = NULL;
4373 if (blame->commit && *blame->commit->filename) {
4374 id = blame->commit->id;
4375 author = blame->commit->author;
4376 time = &blame->commit->time;
4377 }
4379 if (draw_date(view, time))
4380 return TRUE;
4382 if (draw_author(view, author))
4383 return TRUE;
4385 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4386 return TRUE;
4388 if (draw_lineno(view, lineno))
4389 return TRUE;
4391 draw_text(view, LINE_DEFAULT, blame->text);
4392 return TRUE;
4393 }
4395 static bool
4396 check_blame_commit(struct blame *blame, bool check_null_id)
4397 {
4398 if (!blame->commit)
4399 report("Commit data not loaded yet");
4400 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4401 report("No commit exist for the selected line");
4402 else
4403 return TRUE;
4404 return FALSE;
4405 }
4407 static void
4408 setup_blame_parent_line(struct view *view, struct blame *blame)
4409 {
4410 char from[SIZEOF_REF + SIZEOF_STR];
4411 char to[SIZEOF_REF + SIZEOF_STR];
4412 const char *diff_tree_argv[] = {
4413 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4414 "-U0", from, to, "--", NULL
4415 };
4416 struct io io;
4417 int parent_lineno = -1;
4418 int blamed_lineno = -1;
4419 char *line;
4421 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4422 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4423 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4424 return;
4426 while ((line = io_get(&io, '\n', TRUE))) {
4427 if (*line == '@') {
4428 char *pos = strchr(line, '+');
4430 parent_lineno = atoi(line + 4);
4431 if (pos)
4432 blamed_lineno = atoi(pos + 1);
4434 } else if (*line == '+' && parent_lineno != -1) {
4435 if (blame->lineno == blamed_lineno - 1 &&
4436 !strcmp(blame->text, line + 1)) {
4437 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4438 break;
4439 }
4440 blamed_lineno++;
4441 }
4442 }
4444 io_done(&io);
4445 }
4447 static enum request
4448 blame_request(struct view *view, enum request request, struct line *line)
4449 {
4450 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4451 struct blame *blame = line->data;
4453 switch (request) {
4454 case REQ_VIEW_BLAME:
4455 if (check_blame_commit(blame, TRUE)) {
4456 string_copy(opt_ref, blame->commit->id);
4457 string_copy(opt_file, blame->commit->filename);
4458 if (blame->lineno)
4459 view->lineno = blame->lineno;
4460 refresh_view(view);
4461 }
4462 break;
4464 case REQ_PARENT:
4465 if (!check_blame_commit(blame, TRUE))
4466 break;
4467 if (!*blame->commit->parent_id) {
4468 report("The selected commit has no parents");
4469 } else {
4470 string_copy_rev(opt_ref, blame->commit->parent_id);
4471 string_copy(opt_file, blame->commit->parent_filename);
4472 setup_blame_parent_line(view, blame);
4473 refresh_view(view);
4474 }
4475 break;
4477 case REQ_ENTER:
4478 if (!check_blame_commit(blame, FALSE))
4479 break;
4481 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4482 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4483 break;
4485 if (!strcmp(blame->commit->id, NULL_ID)) {
4486 struct view *diff = VIEW(REQ_VIEW_DIFF);
4487 const char *diff_index_argv[] = {
4488 "git", "diff-index", "--root", "--patch-with-stat",
4489 "-C", "-M", "HEAD", "--", view->vid, NULL
4490 };
4492 if (!*blame->commit->parent_id) {
4493 diff_index_argv[1] = "diff";
4494 diff_index_argv[2] = "--no-color";
4495 diff_index_argv[6] = "--";
4496 diff_index_argv[7] = "/dev/null";
4497 }
4499 open_argv(view, diff, diff_index_argv, NULL, flags);
4500 } else {
4501 open_view(view, REQ_VIEW_DIFF, flags);
4502 }
4503 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4504 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4505 break;
4507 default:
4508 return request;
4509 }
4511 return REQ_NONE;
4512 }
4514 static bool
4515 blame_grep(struct view *view, struct line *line)
4516 {
4517 struct blame *blame = line->data;
4518 struct blame_commit *commit = blame->commit;
4519 const char *text[] = {
4520 blame->text,
4521 commit ? commit->title : "",
4522 commit ? commit->id : "",
4523 commit && opt_author ? commit->author : "",
4524 commit ? mkdate(&commit->time, opt_date) : "",
4525 NULL
4526 };
4528 return grep_text(view, text);
4529 }
4531 static void
4532 blame_select(struct view *view, struct line *line)
4533 {
4534 struct blame *blame = line->data;
4535 struct blame_commit *commit = blame->commit;
4537 if (!commit)
4538 return;
4540 if (!strcmp(commit->id, NULL_ID))
4541 string_ncopy(ref_commit, "HEAD", 4);
4542 else
4543 string_copy_rev(ref_commit, commit->id);
4544 }
4546 static struct view_ops blame_ops = {
4547 "line",
4548 blame_open,
4549 blame_read,
4550 blame_draw,
4551 blame_request,
4552 blame_grep,
4553 blame_select,
4554 };
4556 /*
4557 * Branch backend
4558 */
4560 struct branch {
4561 const char *author; /* Author of the last commit. */
4562 struct time time; /* Date of the last activity. */
4563 const struct ref *ref; /* Name and commit ID information. */
4564 };
4566 static const struct ref branch_all;
4568 static const enum sort_field branch_sort_fields[] = {
4569 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4570 };
4571 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4573 static int
4574 branch_compare(const void *l1, const void *l2)
4575 {
4576 const struct branch *branch1 = ((const struct line *) l1)->data;
4577 const struct branch *branch2 = ((const struct line *) l2)->data;
4579 switch (get_sort_field(branch_sort_state)) {
4580 case ORDERBY_DATE:
4581 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4583 case ORDERBY_AUTHOR:
4584 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4586 case ORDERBY_NAME:
4587 default:
4588 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4589 }
4590 }
4592 static bool
4593 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4594 {
4595 struct branch *branch = line->data;
4596 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4598 if (draw_date(view, &branch->time))
4599 return TRUE;
4601 if (draw_author(view, branch->author))
4602 return TRUE;
4604 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4605 return TRUE;
4606 }
4608 static enum request
4609 branch_request(struct view *view, enum request request, struct line *line)
4610 {
4611 struct branch *branch = line->data;
4613 switch (request) {
4614 case REQ_REFRESH:
4615 load_refs();
4616 refresh_view(view);
4617 return REQ_NONE;
4619 case REQ_TOGGLE_SORT_FIELD:
4620 case REQ_TOGGLE_SORT_ORDER:
4621 sort_view(view, request, &branch_sort_state, branch_compare);
4622 return REQ_NONE;
4624 case REQ_ENTER:
4625 {
4626 const struct ref *ref = branch->ref;
4627 const char *all_branches_argv[] = {
4628 "git", "log", "--no-color", "--pretty=raw", "--parents",
4629 "--topo-order",
4630 ref == &branch_all ? "--all" : ref->name, NULL
4631 };
4632 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4634 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
4635 return REQ_NONE;
4636 }
4637 default:
4638 return request;
4639 }
4640 }
4642 static bool
4643 branch_read(struct view *view, char *line)
4644 {
4645 static char id[SIZEOF_REV];
4646 struct branch *reference;
4647 size_t i;
4649 if (!line)
4650 return TRUE;
4652 switch (get_line_type(line)) {
4653 case LINE_COMMIT:
4654 string_copy_rev(id, line + STRING_SIZE("commit "));
4655 return TRUE;
4657 case LINE_AUTHOR:
4658 for (i = 0, reference = NULL; i < view->lines; i++) {
4659 struct branch *branch = view->line[i].data;
4661 if (strcmp(branch->ref->id, id))
4662 continue;
4664 view->line[i].dirty = TRUE;
4665 if (reference) {
4666 branch->author = reference->author;
4667 branch->time = reference->time;
4668 continue;
4669 }
4671 parse_author_line(line + STRING_SIZE("author "),
4672 &branch->author, &branch->time);
4673 reference = branch;
4674 }
4675 return TRUE;
4677 default:
4678 return TRUE;
4679 }
4681 }
4683 static bool
4684 branch_open_visitor(void *data, const struct ref *ref)
4685 {
4686 struct view *view = data;
4687 struct branch *branch;
4689 if (ref->tag || ref->ltag || ref->remote)
4690 return TRUE;
4692 branch = calloc(1, sizeof(*branch));
4693 if (!branch)
4694 return FALSE;
4696 branch->ref = ref;
4697 return !!add_line_data(view, branch, LINE_DEFAULT);
4698 }
4700 static bool
4701 branch_open(struct view *view, enum open_flags flags)
4702 {
4703 const char *branch_log[] = {
4704 "git", "log", "--no-color", "--pretty=raw",
4705 "--simplify-by-decoration", "--all", NULL
4706 };
4708 if (!begin_update(view, NULL, branch_log, flags)) {
4709 report("Failed to load branch data");
4710 return TRUE;
4711 }
4713 branch_open_visitor(view, &branch_all);
4714 foreach_ref(branch_open_visitor, view);
4715 view->p_restore = TRUE;
4717 return TRUE;
4718 }
4720 static bool
4721 branch_grep(struct view *view, struct line *line)
4722 {
4723 struct branch *branch = line->data;
4724 const char *text[] = {
4725 branch->ref->name,
4726 branch->author,
4727 NULL
4728 };
4730 return grep_text(view, text);
4731 }
4733 static void
4734 branch_select(struct view *view, struct line *line)
4735 {
4736 struct branch *branch = line->data;
4738 string_copy_rev(view->ref, branch->ref->id);
4739 string_copy_rev(ref_commit, branch->ref->id);
4740 string_copy_rev(ref_head, branch->ref->id);
4741 string_copy_rev(ref_branch, branch->ref->name);
4742 }
4744 static struct view_ops branch_ops = {
4745 "branch",
4746 branch_open,
4747 branch_read,
4748 branch_draw,
4749 branch_request,
4750 branch_grep,
4751 branch_select,
4752 };
4754 /*
4755 * Status backend
4756 */
4758 struct status {
4759 char status;
4760 struct {
4761 mode_t mode;
4762 char rev[SIZEOF_REV];
4763 char name[SIZEOF_STR];
4764 } old;
4765 struct {
4766 mode_t mode;
4767 char rev[SIZEOF_REV];
4768 char name[SIZEOF_STR];
4769 } new;
4770 };
4772 static char status_onbranch[SIZEOF_STR];
4773 static struct status stage_status;
4774 static enum line_type stage_line_type;
4775 static size_t stage_chunks;
4776 static int *stage_chunk;
4778 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4780 /* This should work even for the "On branch" line. */
4781 static inline bool
4782 status_has_none(struct view *view, struct line *line)
4783 {
4784 return line < view->line + view->lines && !line[1].data;
4785 }
4787 /* Get fields from the diff line:
4788 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4789 */
4790 static inline bool
4791 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4792 {
4793 const char *old_mode = buf + 1;
4794 const char *new_mode = buf + 8;
4795 const char *old_rev = buf + 15;
4796 const char *new_rev = buf + 56;
4797 const char *status = buf + 97;
4799 if (bufsize < 98 ||
4800 old_mode[-1] != ':' ||
4801 new_mode[-1] != ' ' ||
4802 old_rev[-1] != ' ' ||
4803 new_rev[-1] != ' ' ||
4804 status[-1] != ' ')
4805 return FALSE;
4807 file->status = *status;
4809 string_copy_rev(file->old.rev, old_rev);
4810 string_copy_rev(file->new.rev, new_rev);
4812 file->old.mode = strtoul(old_mode, NULL, 8);
4813 file->new.mode = strtoul(new_mode, NULL, 8);
4815 file->old.name[0] = file->new.name[0] = 0;
4817 return TRUE;
4818 }
4820 static bool
4821 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4822 {
4823 struct status *unmerged = NULL;
4824 char *buf;
4825 struct io io;
4827 if (!io_run(&io, IO_RD, opt_cdup, argv))
4828 return FALSE;
4830 add_line_data(view, NULL, type);
4832 while ((buf = io_get(&io, 0, TRUE))) {
4833 struct status *file = unmerged;
4835 if (!file) {
4836 file = calloc(1, sizeof(*file));
4837 if (!file || !add_line_data(view, file, type))
4838 goto error_out;
4839 }
4841 /* Parse diff info part. */
4842 if (status) {
4843 file->status = status;
4844 if (status == 'A')
4845 string_copy(file->old.rev, NULL_ID);
4847 } else if (!file->status || file == unmerged) {
4848 if (!status_get_diff(file, buf, strlen(buf)))
4849 goto error_out;
4851 buf = io_get(&io, 0, TRUE);
4852 if (!buf)
4853 break;
4855 /* Collapse all modified entries that follow an
4856 * associated unmerged entry. */
4857 if (unmerged == file) {
4858 unmerged->status = 'U';
4859 unmerged = NULL;
4860 } else if (file->status == 'U') {
4861 unmerged = file;
4862 }
4863 }
4865 /* Grab the old name for rename/copy. */
4866 if (!*file->old.name &&
4867 (file->status == 'R' || file->status == 'C')) {
4868 string_ncopy(file->old.name, buf, strlen(buf));
4870 buf = io_get(&io, 0, TRUE);
4871 if (!buf)
4872 break;
4873 }
4875 /* git-ls-files just delivers a NUL separated list of
4876 * file names similar to the second half of the
4877 * git-diff-* output. */
4878 string_ncopy(file->new.name, buf, strlen(buf));
4879 if (!*file->old.name)
4880 string_copy(file->old.name, file->new.name);
4881 file = NULL;
4882 }
4884 if (io_error(&io)) {
4885 error_out:
4886 io_done(&io);
4887 return FALSE;
4888 }
4890 if (!view->line[view->lines - 1].data)
4891 add_line_data(view, NULL, LINE_STAT_NONE);
4893 io_done(&io);
4894 return TRUE;
4895 }
4897 /* Don't show unmerged entries in the staged section. */
4898 static const char *status_diff_index_argv[] = {
4899 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4900 "--cached", "-M", "HEAD", NULL
4901 };
4903 static const char *status_diff_files_argv[] = {
4904 "git", "diff-files", "-z", NULL
4905 };
4907 static const char *status_list_other_argv[] = {
4908 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4909 };
4911 static const char *status_list_no_head_argv[] = {
4912 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4913 };
4915 static const char *update_index_argv[] = {
4916 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4917 };
4919 /* Restore the previous line number to stay in the context or select a
4920 * line with something that can be updated. */
4921 static void
4922 status_restore(struct view *view)
4923 {
4924 if (view->p_lineno >= view->lines)
4925 view->p_lineno = view->lines - 1;
4926 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4927 view->p_lineno++;
4928 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4929 view->p_lineno--;
4931 /* If the above fails, always skip the "On branch" line. */
4932 if (view->p_lineno < view->lines)
4933 view->lineno = view->p_lineno;
4934 else
4935 view->lineno = 1;
4937 if (view->lineno < view->offset)
4938 view->offset = view->lineno;
4939 else if (view->offset + view->height <= view->lineno)
4940 view->offset = view->lineno - view->height + 1;
4942 view->p_restore = FALSE;
4943 }
4945 static void
4946 status_update_onbranch(void)
4947 {
4948 static const char *paths[][2] = {
4949 { "rebase-apply/rebasing", "Rebasing" },
4950 { "rebase-apply/applying", "Applying mailbox" },
4951 { "rebase-apply/", "Rebasing mailbox" },
4952 { "rebase-merge/interactive", "Interactive rebase" },
4953 { "rebase-merge/", "Rebase merge" },
4954 { "MERGE_HEAD", "Merging" },
4955 { "BISECT_LOG", "Bisecting" },
4956 { "HEAD", "On branch" },
4957 };
4958 char buf[SIZEOF_STR];
4959 struct stat stat;
4960 int i;
4962 if (is_initial_commit()) {
4963 string_copy(status_onbranch, "Initial commit");
4964 return;
4965 }
4967 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4968 char *head = opt_head;
4970 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4971 lstat(buf, &stat) < 0)
4972 continue;
4974 if (!*opt_head) {
4975 struct io io;
4977 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4978 io_read_buf(&io, buf, sizeof(buf))) {
4979 head = buf;
4980 if (!prefixcmp(head, "refs/heads/"))
4981 head += STRING_SIZE("refs/heads/");
4982 }
4983 }
4985 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4986 string_copy(status_onbranch, opt_head);
4987 return;
4988 }
4990 string_copy(status_onbranch, "Not currently on any branch");
4991 }
4993 /* First parse staged info using git-diff-index(1), then parse unstaged
4994 * info using git-diff-files(1), and finally untracked files using
4995 * git-ls-files(1). */
4996 static bool
4997 status_open(struct view *view, enum open_flags flags)
4998 {
4999 reset_view(view);
5001 add_line_data(view, NULL, LINE_STAT_HEAD);
5002 status_update_onbranch();
5004 io_run_bg(update_index_argv);
5006 if (is_initial_commit()) {
5007 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
5008 return FALSE;
5009 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
5010 return FALSE;
5011 }
5013 if (!opt_untracked_dirs_content)
5014 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
5016 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
5017 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
5018 return FALSE;
5020 /* Restore the exact position or use the specialized restore
5021 * mode? */
5022 if (!view->p_restore)
5023 status_restore(view);
5024 return TRUE;
5025 }
5027 static bool
5028 status_draw(struct view *view, struct line *line, unsigned int lineno)
5029 {
5030 struct status *status = line->data;
5031 enum line_type type;
5032 const char *text;
5034 if (!status) {
5035 switch (line->type) {
5036 case LINE_STAT_STAGED:
5037 type = LINE_STAT_SECTION;
5038 text = "Changes to be committed:";
5039 break;
5041 case LINE_STAT_UNSTAGED:
5042 type = LINE_STAT_SECTION;
5043 text = "Changed but not updated:";
5044 break;
5046 case LINE_STAT_UNTRACKED:
5047 type = LINE_STAT_SECTION;
5048 text = "Untracked files:";
5049 break;
5051 case LINE_STAT_NONE:
5052 type = LINE_DEFAULT;
5053 text = " (no files)";
5054 break;
5056 case LINE_STAT_HEAD:
5057 type = LINE_STAT_HEAD;
5058 text = status_onbranch;
5059 break;
5061 default:
5062 return FALSE;
5063 }
5064 } else {
5065 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5067 buf[0] = status->status;
5068 if (draw_text(view, line->type, buf))
5069 return TRUE;
5070 type = LINE_DEFAULT;
5071 text = status->new.name;
5072 }
5074 draw_text(view, type, text);
5075 return TRUE;
5076 }
5078 static enum request
5079 status_enter(struct view *view, struct line *line)
5080 {
5081 struct status *status = line->data;
5082 const char *oldpath = status ? status->old.name : NULL;
5083 /* Diffs for unmerged entries are empty when passing the new
5084 * path, so leave it empty. */
5085 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5086 const char *info;
5087 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5088 struct view *stage = VIEW(REQ_VIEW_STAGE);
5090 if (line->type == LINE_STAT_NONE ||
5091 (!status && line[1].type == LINE_STAT_NONE)) {
5092 report("No file to diff");
5093 return REQ_NONE;
5094 }
5096 switch (line->type) {
5097 case LINE_STAT_STAGED:
5098 if (is_initial_commit()) {
5099 const char *no_head_diff_argv[] = {
5100 "git", "diff", "--no-color", "--patch-with-stat",
5101 "--", "/dev/null", newpath, NULL
5102 };
5104 open_argv(view, stage, no_head_diff_argv, opt_cdup, flags);
5105 } else {
5106 const char *index_show_argv[] = {
5107 "git", "diff-index", "--root", "--patch-with-stat",
5108 "-C", "-M", "--cached", "HEAD", "--",
5109 oldpath, newpath, NULL
5110 };
5112 open_argv(view, stage, index_show_argv, opt_cdup, flags);
5113 }
5115 if (status)
5116 info = "Staged changes to %s";
5117 else
5118 info = "Staged changes";
5119 break;
5121 case LINE_STAT_UNSTAGED:
5122 {
5123 const char *files_show_argv[] = {
5124 "git", "diff-files", "--root", "--patch-with-stat",
5125 "-C", "-M", "--", oldpath, newpath, NULL
5126 };
5128 open_argv(view, stage, files_show_argv, opt_cdup, flags);
5129 if (status)
5130 info = "Unstaged changes to %s";
5131 else
5132 info = "Unstaged changes";
5133 break;
5134 }
5135 case LINE_STAT_UNTRACKED:
5136 if (!newpath) {
5137 report("No file to show");
5138 return REQ_NONE;
5139 }
5141 if (!suffixcmp(status->new.name, -1, "/")) {
5142 report("Cannot display a directory");
5143 return REQ_NONE;
5144 }
5146 open_file(view, stage, newpath, flags);
5147 info = "Untracked file %s";
5148 break;
5150 case LINE_STAT_HEAD:
5151 return REQ_NONE;
5153 default:
5154 die("line type %d not handled in switch", line->type);
5155 }
5157 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5158 if (status) {
5159 stage_status = *status;
5160 } else {
5161 memset(&stage_status, 0, sizeof(stage_status));
5162 }
5164 stage_line_type = line->type;
5165 stage_chunks = 0;
5166 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5167 }
5169 return REQ_NONE;
5170 }
5172 static bool
5173 status_exists(struct status *status, enum line_type type)
5174 {
5175 struct view *view = VIEW(REQ_VIEW_STATUS);
5176 unsigned long lineno;
5178 for (lineno = 0; lineno < view->lines; lineno++) {
5179 struct line *line = &view->line[lineno];
5180 struct status *pos = line->data;
5182 if (line->type != type)
5183 continue;
5184 if (!pos && (!status || !status->status) && line[1].data) {
5185 select_view_line(view, lineno);
5186 return TRUE;
5187 }
5188 if (pos && !strcmp(status->new.name, pos->new.name)) {
5189 select_view_line(view, lineno);
5190 return TRUE;
5191 }
5192 }
5194 return FALSE;
5195 }
5198 static bool
5199 status_update_prepare(struct io *io, enum line_type type)
5200 {
5201 const char *staged_argv[] = {
5202 "git", "update-index", "-z", "--index-info", NULL
5203 };
5204 const char *others_argv[] = {
5205 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5206 };
5208 switch (type) {
5209 case LINE_STAT_STAGED:
5210 return io_run(io, IO_WR, opt_cdup, staged_argv);
5212 case LINE_STAT_UNSTAGED:
5213 case LINE_STAT_UNTRACKED:
5214 return io_run(io, IO_WR, opt_cdup, others_argv);
5216 default:
5217 die("line type %d not handled in switch", type);
5218 return FALSE;
5219 }
5220 }
5222 static bool
5223 status_update_write(struct io *io, struct status *status, enum line_type type)
5224 {
5225 char buf[SIZEOF_STR];
5226 size_t bufsize = 0;
5228 switch (type) {
5229 case LINE_STAT_STAGED:
5230 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5231 status->old.mode,
5232 status->old.rev,
5233 status->old.name, 0))
5234 return FALSE;
5235 break;
5237 case LINE_STAT_UNSTAGED:
5238 case LINE_STAT_UNTRACKED:
5239 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5240 return FALSE;
5241 break;
5243 default:
5244 die("line type %d not handled in switch", type);
5245 }
5247 return io_write(io, buf, bufsize);
5248 }
5250 static bool
5251 status_update_file(struct status *status, enum line_type type)
5252 {
5253 struct io io;
5254 bool result;
5256 if (!status_update_prepare(&io, type))
5257 return FALSE;
5259 result = status_update_write(&io, status, type);
5260 return io_done(&io) && result;
5261 }
5263 static bool
5264 status_update_files(struct view *view, struct line *line)
5265 {
5266 char buf[sizeof(view->ref)];
5267 struct io io;
5268 bool result = TRUE;
5269 struct line *pos = view->line + view->lines;
5270 int files = 0;
5271 int file, done;
5272 int cursor_y = -1, cursor_x = -1;
5274 if (!status_update_prepare(&io, line->type))
5275 return FALSE;
5277 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5278 files++;
5280 string_copy(buf, view->ref);
5281 getsyx(cursor_y, cursor_x);
5282 for (file = 0, done = 5; result && file < files; line++, file++) {
5283 int almost_done = file * 100 / files;
5285 if (almost_done > done) {
5286 done = almost_done;
5287 string_format(view->ref, "updating file %u of %u (%d%% done)",
5288 file, files, done);
5289 update_view_title(view);
5290 setsyx(cursor_y, cursor_x);
5291 doupdate();
5292 }
5293 result = status_update_write(&io, line->data, line->type);
5294 }
5295 string_copy(view->ref, buf);
5297 return io_done(&io) && result;
5298 }
5300 static bool
5301 status_update(struct view *view)
5302 {
5303 struct line *line = &view->line[view->lineno];
5305 assert(view->lines);
5307 if (!line->data) {
5308 /* This should work even for the "On branch" line. */
5309 if (line < view->line + view->lines && !line[1].data) {
5310 report("Nothing to update");
5311 return FALSE;
5312 }
5314 if (!status_update_files(view, line + 1)) {
5315 report("Failed to update file status");
5316 return FALSE;
5317 }
5319 } else if (!status_update_file(line->data, line->type)) {
5320 report("Failed to update file status");
5321 return FALSE;
5322 }
5324 return TRUE;
5325 }
5327 static bool
5328 status_revert(struct status *status, enum line_type type, bool has_none)
5329 {
5330 if (!status || type != LINE_STAT_UNSTAGED) {
5331 if (type == LINE_STAT_STAGED) {
5332 report("Cannot revert changes to staged files");
5333 } else if (type == LINE_STAT_UNTRACKED) {
5334 report("Cannot revert changes to untracked files");
5335 } else if (has_none) {
5336 report("Nothing to revert");
5337 } else {
5338 report("Cannot revert changes to multiple files");
5339 }
5341 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5342 char mode[10] = "100644";
5343 const char *reset_argv[] = {
5344 "git", "update-index", "--cacheinfo", mode,
5345 status->old.rev, status->old.name, NULL
5346 };
5347 const char *checkout_argv[] = {
5348 "git", "checkout", "--", status->old.name, NULL
5349 };
5351 if (status->status == 'U') {
5352 string_format(mode, "%5o", status->old.mode);
5354 if (status->old.mode == 0 && status->new.mode == 0) {
5355 reset_argv[2] = "--force-remove";
5356 reset_argv[3] = status->old.name;
5357 reset_argv[4] = NULL;
5358 }
5360 if (!io_run_fg(reset_argv, opt_cdup))
5361 return FALSE;
5362 if (status->old.mode == 0 && status->new.mode == 0)
5363 return TRUE;
5364 }
5366 return io_run_fg(checkout_argv, opt_cdup);
5367 }
5369 return FALSE;
5370 }
5372 static enum request
5373 status_request(struct view *view, enum request request, struct line *line)
5374 {
5375 struct status *status = line->data;
5377 switch (request) {
5378 case REQ_STATUS_UPDATE:
5379 if (!status_update(view))
5380 return REQ_NONE;
5381 break;
5383 case REQ_STATUS_REVERT:
5384 if (!status_revert(status, line->type, status_has_none(view, line)))
5385 return REQ_NONE;
5386 break;
5388 case REQ_STATUS_MERGE:
5389 if (!status || status->status != 'U') {
5390 report("Merging only possible for files with unmerged status ('U').");
5391 return REQ_NONE;
5392 }
5393 open_mergetool(status->new.name);
5394 break;
5396 case REQ_EDIT:
5397 if (!status)
5398 return request;
5399 if (status->status == 'D') {
5400 report("File has been deleted.");
5401 return REQ_NONE;
5402 }
5404 open_editor(status->new.name);
5405 break;
5407 case REQ_VIEW_BLAME:
5408 if (status)
5409 opt_ref[0] = 0;
5410 return request;
5412 case REQ_ENTER:
5413 /* After returning the status view has been split to
5414 * show the stage view. No further reloading is
5415 * necessary. */
5416 return status_enter(view, line);
5418 case REQ_REFRESH:
5419 /* Simply reload the view. */
5420 break;
5422 default:
5423 return request;
5424 }
5426 refresh_view(view);
5428 return REQ_NONE;
5429 }
5431 static void
5432 status_select(struct view *view, struct line *line)
5433 {
5434 struct status *status = line->data;
5435 char file[SIZEOF_STR] = "all files";
5436 const char *text;
5437 const char *key;
5439 if (status && !string_format(file, "'%s'", status->new.name))
5440 return;
5442 if (!status && line[1].type == LINE_STAT_NONE)
5443 line++;
5445 switch (line->type) {
5446 case LINE_STAT_STAGED:
5447 text = "Press %s to unstage %s for commit";
5448 break;
5450 case LINE_STAT_UNSTAGED:
5451 text = "Press %s to stage %s for commit";
5452 break;
5454 case LINE_STAT_UNTRACKED:
5455 text = "Press %s to stage %s for addition";
5456 break;
5458 case LINE_STAT_HEAD:
5459 case LINE_STAT_NONE:
5460 text = "Nothing to update";
5461 break;
5463 default:
5464 die("line type %d not handled in switch", line->type);
5465 }
5467 if (status && status->status == 'U') {
5468 text = "Press %s to resolve conflict in %s";
5469 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5471 } else {
5472 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5473 }
5475 string_format(view->ref, text, key, file);
5476 if (status)
5477 string_copy(opt_file, status->new.name);
5478 }
5480 static bool
5481 status_grep(struct view *view, struct line *line)
5482 {
5483 struct status *status = line->data;
5485 if (status) {
5486 const char buf[2] = { status->status, 0 };
5487 const char *text[] = { status->new.name, buf, NULL };
5489 return grep_text(view, text);
5490 }
5492 return FALSE;
5493 }
5495 static struct view_ops status_ops = {
5496 "file",
5497 status_open,
5498 NULL,
5499 status_draw,
5500 status_request,
5501 status_grep,
5502 status_select,
5503 };
5506 static bool
5507 stage_diff_write(struct io *io, struct line *line, struct line *end)
5508 {
5509 while (line < end) {
5510 if (!io_write(io, line->data, strlen(line->data)) ||
5511 !io_write(io, "\n", 1))
5512 return FALSE;
5513 line++;
5514 if (line->type == LINE_DIFF_CHUNK ||
5515 line->type == LINE_DIFF_HEADER)
5516 break;
5517 }
5519 return TRUE;
5520 }
5522 static struct line *
5523 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5524 {
5525 for (; view->line < line; line--)
5526 if (line->type == type)
5527 return line;
5529 return NULL;
5530 }
5532 static bool
5533 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5534 {
5535 const char *apply_argv[SIZEOF_ARG] = {
5536 "git", "apply", "--whitespace=nowarn", NULL
5537 };
5538 struct line *diff_hdr;
5539 struct io io;
5540 int argc = 3;
5542 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5543 if (!diff_hdr)
5544 return FALSE;
5546 if (!revert)
5547 apply_argv[argc++] = "--cached";
5548 if (revert || stage_line_type == LINE_STAT_STAGED)
5549 apply_argv[argc++] = "-R";
5550 apply_argv[argc++] = "-";
5551 apply_argv[argc++] = NULL;
5552 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5553 return FALSE;
5555 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5556 !stage_diff_write(&io, chunk, view->line + view->lines))
5557 chunk = NULL;
5559 io_done(&io);
5560 io_run_bg(update_index_argv);
5562 return chunk ? TRUE : FALSE;
5563 }
5565 static bool
5566 stage_update(struct view *view, struct line *line)
5567 {
5568 struct line *chunk = NULL;
5570 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5571 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5573 if (chunk) {
5574 if (!stage_apply_chunk(view, chunk, FALSE)) {
5575 report("Failed to apply chunk");
5576 return FALSE;
5577 }
5579 } else if (!stage_status.status) {
5580 view = VIEW(REQ_VIEW_STATUS);
5582 for (line = view->line; line < view->line + view->lines; line++)
5583 if (line->type == stage_line_type)
5584 break;
5586 if (!status_update_files(view, line + 1)) {
5587 report("Failed to update files");
5588 return FALSE;
5589 }
5591 } else if (!status_update_file(&stage_status, stage_line_type)) {
5592 report("Failed to update file");
5593 return FALSE;
5594 }
5596 return TRUE;
5597 }
5599 static bool
5600 stage_revert(struct view *view, struct line *line)
5601 {
5602 struct line *chunk = NULL;
5604 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5605 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5607 if (chunk) {
5608 if (!prompt_yesno("Are you sure you want to revert changes?"))
5609 return FALSE;
5611 if (!stage_apply_chunk(view, chunk, TRUE)) {
5612 report("Failed to revert chunk");
5613 return FALSE;
5614 }
5615 return TRUE;
5617 } else {
5618 return status_revert(stage_status.status ? &stage_status : NULL,
5619 stage_line_type, FALSE);
5620 }
5621 }
5624 static void
5625 stage_next(struct view *view, struct line *line)
5626 {
5627 int i;
5629 if (!stage_chunks) {
5630 for (line = view->line; line < view->line + view->lines; line++) {
5631 if (line->type != LINE_DIFF_CHUNK)
5632 continue;
5634 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5635 report("Allocation failure");
5636 return;
5637 }
5639 stage_chunk[stage_chunks++] = line - view->line;
5640 }
5641 }
5643 for (i = 0; i < stage_chunks; i++) {
5644 if (stage_chunk[i] > view->lineno) {
5645 do_scroll_view(view, stage_chunk[i] - view->lineno);
5646 report("Chunk %d of %d", i + 1, stage_chunks);
5647 return;
5648 }
5649 }
5651 report("No next chunk found");
5652 }
5654 static enum request
5655 stage_request(struct view *view, enum request request, struct line *line)
5656 {
5657 switch (request) {
5658 case REQ_STATUS_UPDATE:
5659 if (!stage_update(view, line))
5660 return REQ_NONE;
5661 break;
5663 case REQ_STATUS_REVERT:
5664 if (!stage_revert(view, line))
5665 return REQ_NONE;
5666 break;
5668 case REQ_STAGE_NEXT:
5669 if (stage_line_type == LINE_STAT_UNTRACKED) {
5670 report("File is untracked; press %s to add",
5671 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5672 return REQ_NONE;
5673 }
5674 stage_next(view, line);
5675 return REQ_NONE;
5677 case REQ_EDIT:
5678 if (!stage_status.new.name[0])
5679 return request;
5680 if (stage_status.status == 'D') {
5681 report("File has been deleted.");
5682 return REQ_NONE;
5683 }
5685 open_editor(stage_status.new.name);
5686 break;
5688 case REQ_REFRESH:
5689 /* Reload everything ... */
5690 break;
5692 case REQ_VIEW_BLAME:
5693 if (stage_status.new.name[0]) {
5694 string_copy(opt_file, stage_status.new.name);
5695 opt_ref[0] = 0;
5696 }
5697 return request;
5699 case REQ_ENTER:
5700 return pager_request(view, request, line);
5702 default:
5703 return request;
5704 }
5706 refresh_view(view->parent);
5708 /* Check whether the staged entry still exists, and close the
5709 * stage view if it doesn't. */
5710 if (!status_exists(&stage_status, stage_line_type)) {
5711 status_restore(VIEW(REQ_VIEW_STATUS));
5712 return REQ_VIEW_CLOSE;
5713 }
5715 refresh_view(view);
5717 return REQ_NONE;
5718 }
5720 static struct view_ops stage_ops = {
5721 "line",
5722 view_open,
5723 pager_read,
5724 pager_draw,
5725 stage_request,
5726 pager_grep,
5727 pager_select,
5728 };
5731 /*
5732 * Revision graph
5733 */
5735 static const enum line_type graph_colors[] = {
5736 LINE_GRAPH_LINE_0,
5737 LINE_GRAPH_LINE_1,
5738 LINE_GRAPH_LINE_2,
5739 LINE_GRAPH_LINE_3,
5740 LINE_GRAPH_LINE_4,
5741 LINE_GRAPH_LINE_5,
5742 LINE_GRAPH_LINE_6,
5743 };
5745 static enum line_type get_graph_color(struct graph_symbol *symbol)
5746 {
5747 if (symbol->commit)
5748 return LINE_GRAPH_COMMIT;
5749 assert(symbol->color < ARRAY_SIZE(graph_colors));
5750 return graph_colors[symbol->color];
5751 }
5753 static bool
5754 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5755 {
5756 const char *chars = graph_symbol_to_utf8(symbol);
5758 return draw_text(view, color, chars + !!first);
5759 }
5761 static bool
5762 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5763 {
5764 const char *chars = graph_symbol_to_ascii(symbol);
5766 return draw_text(view, color, chars + !!first);
5767 }
5769 static bool
5770 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5771 {
5772 const chtype *chars = graph_symbol_to_chtype(symbol);
5774 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5775 }
5777 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5779 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5780 {
5781 static const draw_graph_fn fns[] = {
5782 draw_graph_ascii,
5783 draw_graph_chtype,
5784 draw_graph_utf8
5785 };
5786 draw_graph_fn fn = fns[opt_line_graphics];
5787 int i;
5789 for (i = 0; i < canvas->size; i++) {
5790 struct graph_symbol *symbol = &canvas->symbols[i];
5791 enum line_type color = get_graph_color(symbol);
5793 if (fn(view, symbol, color, i == 0))
5794 return TRUE;
5795 }
5797 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5798 }
5800 /*
5801 * Main view backend
5802 */
5804 struct commit {
5805 char id[SIZEOF_REV]; /* SHA1 ID. */
5806 char title[128]; /* First line of the commit message. */
5807 const char *author; /* Author of the commit. */
5808 struct time time; /* Date from the author ident. */
5809 struct ref_list *refs; /* Repository references. */
5810 struct graph_canvas graph; /* Ancestry chain graphics. */
5811 };
5813 static bool
5814 main_open(struct view *view, enum open_flags flags)
5815 {
5816 static const char *main_argv[] = {
5817 "git", "log", "--no-color", "--pretty=raw", "--parents",
5818 "--topo-order", "%(diffargs)", "%(revargs)",
5819 "--", "%(fileargs)", NULL
5820 };
5822 return begin_update(view, NULL, main_argv, flags);
5823 }
5825 static bool
5826 main_draw(struct view *view, struct line *line, unsigned int lineno)
5827 {
5828 struct commit *commit = line->data;
5830 if (!commit->author)
5831 return FALSE;
5833 if (draw_date(view, &commit->time))
5834 return TRUE;
5836 if (draw_author(view, commit->author))
5837 return TRUE;
5839 if (opt_rev_graph && draw_graph(view, &commit->graph))
5840 return TRUE;
5842 if (draw_refs(view, commit->refs))
5843 return TRUE;
5845 draw_text(view, LINE_DEFAULT, commit->title);
5846 return TRUE;
5847 }
5849 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5850 static bool
5851 main_read(struct view *view, char *line)
5852 {
5853 static struct graph graph;
5854 enum line_type type;
5855 struct commit *commit;
5857 if (!line) {
5858 if (!view->lines && !view->prev)
5859 die("No revisions match the given arguments.");
5860 if (view->lines > 0) {
5861 commit = view->line[view->lines - 1].data;
5862 view->line[view->lines - 1].dirty = 1;
5863 if (!commit->author) {
5864 view->lines--;
5865 free(commit);
5866 }
5867 }
5869 done_graph(&graph);
5870 return TRUE;
5871 }
5873 type = get_line_type(line);
5874 if (type == LINE_COMMIT) {
5875 bool is_boundary;
5877 commit = calloc(1, sizeof(struct commit));
5878 if (!commit)
5879 return FALSE;
5881 line += STRING_SIZE("commit ");
5882 is_boundary = *line == '-';
5883 if (is_boundary)
5884 line++;
5886 string_copy_rev(commit->id, line);
5887 commit->refs = get_ref_list(commit->id);
5888 add_line_data(view, commit, LINE_MAIN_COMMIT);
5889 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5890 return TRUE;
5891 }
5893 if (!view->lines)
5894 return TRUE;
5895 commit = view->line[view->lines - 1].data;
5897 switch (type) {
5898 case LINE_PARENT:
5899 if (!graph.has_parents)
5900 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5901 break;
5903 case LINE_AUTHOR:
5904 parse_author_line(line + STRING_SIZE("author "),
5905 &commit->author, &commit->time);
5906 graph_render_parents(&graph);
5907 break;
5909 default:
5910 /* Fill in the commit title if it has not already been set. */
5911 if (commit->title[0])
5912 break;
5914 /* Require titles to start with a non-space character at the
5915 * offset used by git log. */
5916 if (strncmp(line, " ", 4))
5917 break;
5918 line += 4;
5919 /* Well, if the title starts with a whitespace character,
5920 * try to be forgiving. Otherwise we end up with no title. */
5921 while (isspace(*line))
5922 line++;
5923 if (*line == '\0')
5924 break;
5925 /* FIXME: More graceful handling of titles; append "..." to
5926 * shortened titles, etc. */
5928 string_expand(commit->title, sizeof(commit->title), line, 1);
5929 view->line[view->lines - 1].dirty = 1;
5930 }
5932 return TRUE;
5933 }
5935 static enum request
5936 main_request(struct view *view, enum request request, struct line *line)
5937 {
5938 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5940 switch (request) {
5941 case REQ_ENTER:
5942 if (view_is_displayed(view) && display[0] != view)
5943 maximize_view(view, TRUE);
5944 open_view(view, REQ_VIEW_DIFF, flags);
5945 break;
5946 case REQ_REFRESH:
5947 load_refs();
5948 refresh_view(view);
5949 break;
5950 default:
5951 return request;
5952 }
5954 return REQ_NONE;
5955 }
5957 static bool
5958 grep_refs(struct ref_list *list, regex_t *regex)
5959 {
5960 regmatch_t pmatch;
5961 size_t i;
5963 if (!opt_show_refs || !list)
5964 return FALSE;
5966 for (i = 0; i < list->size; i++) {
5967 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5968 return TRUE;
5969 }
5971 return FALSE;
5972 }
5974 static bool
5975 main_grep(struct view *view, struct line *line)
5976 {
5977 struct commit *commit = line->data;
5978 const char *text[] = {
5979 commit->title,
5980 opt_author ? commit->author : "",
5981 mkdate(&commit->time, opt_date),
5982 NULL
5983 };
5985 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5986 }
5988 static void
5989 main_select(struct view *view, struct line *line)
5990 {
5991 struct commit *commit = line->data;
5993 string_copy_rev(view->ref, commit->id);
5994 string_copy_rev(ref_commit, view->ref);
5995 }
5997 static struct view_ops main_ops = {
5998 "commit",
5999 main_open,
6000 main_read,
6001 main_draw,
6002 main_request,
6003 main_grep,
6004 main_select,
6005 };
6008 /*
6009 * Status management
6010 */
6012 /* Whether or not the curses interface has been initialized. */
6013 static bool cursed = FALSE;
6015 /* Terminal hacks and workarounds. */
6016 static bool use_scroll_redrawwin;
6017 static bool use_scroll_status_wclear;
6019 /* The status window is used for polling keystrokes. */
6020 static WINDOW *status_win;
6022 /* Reading from the prompt? */
6023 static bool input_mode = FALSE;
6025 static bool status_empty = FALSE;
6027 /* Update status and title window. */
6028 static void
6029 report(const char *msg, ...)
6030 {
6031 struct view *view = display[current_view];
6033 if (input_mode)
6034 return;
6036 if (!view) {
6037 char buf[SIZEOF_STR];
6038 va_list args;
6040 va_start(args, msg);
6041 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6042 buf[sizeof(buf) - 1] = 0;
6043 buf[sizeof(buf) - 2] = '.';
6044 buf[sizeof(buf) - 3] = '.';
6045 buf[sizeof(buf) - 4] = '.';
6046 }
6047 va_end(args);
6048 die("%s", buf);
6049 }
6051 if (!status_empty || *msg) {
6052 va_list args;
6054 va_start(args, msg);
6056 wmove(status_win, 0, 0);
6057 if (view->has_scrolled && use_scroll_status_wclear)
6058 wclear(status_win);
6059 if (*msg) {
6060 vwprintw(status_win, msg, args);
6061 status_empty = FALSE;
6062 } else {
6063 status_empty = TRUE;
6064 }
6065 wclrtoeol(status_win);
6066 wnoutrefresh(status_win);
6068 va_end(args);
6069 }
6071 update_view_title(view);
6072 }
6074 static void
6075 init_display(void)
6076 {
6077 const char *term;
6078 int x, y;
6080 /* Initialize the curses library */
6081 if (isatty(STDIN_FILENO)) {
6082 cursed = !!initscr();
6083 opt_tty = stdin;
6084 } else {
6085 /* Leave stdin and stdout alone when acting as a pager. */
6086 opt_tty = fopen("/dev/tty", "r+");
6087 if (!opt_tty)
6088 die("Failed to open /dev/tty");
6089 cursed = !!newterm(NULL, opt_tty, opt_tty);
6090 }
6092 if (!cursed)
6093 die("Failed to initialize curses");
6095 nonl(); /* Disable conversion and detect newlines from input. */
6096 cbreak(); /* Take input chars one at a time, no wait for \n */
6097 noecho(); /* Don't echo input */
6098 leaveok(stdscr, FALSE);
6100 if (has_colors())
6101 init_colors();
6103 getmaxyx(stdscr, y, x);
6104 status_win = newwin(1, x, y - 1, 0);
6105 if (!status_win)
6106 die("Failed to create status window");
6108 /* Enable keyboard mapping */
6109 keypad(status_win, TRUE);
6110 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6112 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6113 set_tabsize(opt_tab_size);
6114 #else
6115 TABSIZE = opt_tab_size;
6116 #endif
6118 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6119 if (term && !strcmp(term, "gnome-terminal")) {
6120 /* In the gnome-terminal-emulator, the message from
6121 * scrolling up one line when impossible followed by
6122 * scrolling down one line causes corruption of the
6123 * status line. This is fixed by calling wclear. */
6124 use_scroll_status_wclear = TRUE;
6125 use_scroll_redrawwin = FALSE;
6127 } else if (term && !strcmp(term, "xrvt-xpm")) {
6128 /* No problems with full optimizations in xrvt-(unicode)
6129 * and aterm. */
6130 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6132 } else {
6133 /* When scrolling in (u)xterm the last line in the
6134 * scrolling direction will update slowly. */
6135 use_scroll_redrawwin = TRUE;
6136 use_scroll_status_wclear = FALSE;
6137 }
6138 }
6140 static int
6141 get_input(int prompt_position)
6142 {
6143 struct view *view;
6144 int i, key, cursor_y, cursor_x;
6146 if (prompt_position)
6147 input_mode = TRUE;
6149 while (TRUE) {
6150 bool loading = FALSE;
6152 foreach_view (view, i) {
6153 update_view(view);
6154 if (view_is_displayed(view) && view->has_scrolled &&
6155 use_scroll_redrawwin)
6156 redrawwin(view->win);
6157 view->has_scrolled = FALSE;
6158 if (view->pipe)
6159 loading = TRUE;
6160 }
6162 /* Update the cursor position. */
6163 if (prompt_position) {
6164 getbegyx(status_win, cursor_y, cursor_x);
6165 cursor_x = prompt_position;
6166 } else {
6167 view = display[current_view];
6168 getbegyx(view->win, cursor_y, cursor_x);
6169 cursor_x = view->width - 1;
6170 cursor_y += view->lineno - view->offset;
6171 }
6172 setsyx(cursor_y, cursor_x);
6174 /* Refresh, accept single keystroke of input */
6175 doupdate();
6176 nodelay(status_win, loading);
6177 key = wgetch(status_win);
6179 /* wgetch() with nodelay() enabled returns ERR when
6180 * there's no input. */
6181 if (key == ERR) {
6183 } else if (key == KEY_RESIZE) {
6184 int height, width;
6186 getmaxyx(stdscr, height, width);
6188 wresize(status_win, 1, width);
6189 mvwin(status_win, height - 1, 0);
6190 wnoutrefresh(status_win);
6191 resize_display();
6192 redraw_display(TRUE);
6194 } else {
6195 input_mode = FALSE;
6196 return key;
6197 }
6198 }
6199 }
6201 static char *
6202 prompt_input(const char *prompt, input_handler handler, void *data)
6203 {
6204 enum input_status status = INPUT_OK;
6205 static char buf[SIZEOF_STR];
6206 size_t pos = 0;
6208 buf[pos] = 0;
6210 while (status == INPUT_OK || status == INPUT_SKIP) {
6211 int key;
6213 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6214 wclrtoeol(status_win);
6216 key = get_input(pos + 1);
6217 switch (key) {
6218 case KEY_RETURN:
6219 case KEY_ENTER:
6220 case '\n':
6221 status = pos ? INPUT_STOP : INPUT_CANCEL;
6222 break;
6224 case KEY_BACKSPACE:
6225 if (pos > 0)
6226 buf[--pos] = 0;
6227 else
6228 status = INPUT_CANCEL;
6229 break;
6231 case KEY_ESC:
6232 status = INPUT_CANCEL;
6233 break;
6235 default:
6236 if (pos >= sizeof(buf)) {
6237 report("Input string too long");
6238 return NULL;
6239 }
6241 status = handler(data, buf, key);
6242 if (status == INPUT_OK)
6243 buf[pos++] = (char) key;
6244 }
6245 }
6247 /* Clear the status window */
6248 status_empty = FALSE;
6249 report("");
6251 if (status == INPUT_CANCEL)
6252 return NULL;
6254 buf[pos++] = 0;
6256 return buf;
6257 }
6259 static enum input_status
6260 prompt_yesno_handler(void *data, char *buf, int c)
6261 {
6262 if (c == 'y' || c == 'Y')
6263 return INPUT_STOP;
6264 if (c == 'n' || c == 'N')
6265 return INPUT_CANCEL;
6266 return INPUT_SKIP;
6267 }
6269 static bool
6270 prompt_yesno(const char *prompt)
6271 {
6272 char prompt2[SIZEOF_STR];
6274 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6275 return FALSE;
6277 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6278 }
6280 static enum input_status
6281 read_prompt_handler(void *data, char *buf, int c)
6282 {
6283 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6284 }
6286 static char *
6287 read_prompt(const char *prompt)
6288 {
6289 return prompt_input(prompt, read_prompt_handler, NULL);
6290 }
6292 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6293 {
6294 enum input_status status = INPUT_OK;
6295 int size = 0;
6297 while (items[size].text)
6298 size++;
6300 while (status == INPUT_OK) {
6301 const struct menu_item *item = &items[*selected];
6302 int key;
6303 int i;
6305 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6306 prompt, *selected + 1, size);
6307 if (item->hotkey)
6308 wprintw(status_win, "[%c] ", (char) item->hotkey);
6309 wprintw(status_win, "%s", item->text);
6310 wclrtoeol(status_win);
6312 key = get_input(COLS - 1);
6313 switch (key) {
6314 case KEY_RETURN:
6315 case KEY_ENTER:
6316 case '\n':
6317 status = INPUT_STOP;
6318 break;
6320 case KEY_LEFT:
6321 case KEY_UP:
6322 *selected = *selected - 1;
6323 if (*selected < 0)
6324 *selected = size - 1;
6325 break;
6327 case KEY_RIGHT:
6328 case KEY_DOWN:
6329 *selected = (*selected + 1) % size;
6330 break;
6332 case KEY_ESC:
6333 status = INPUT_CANCEL;
6334 break;
6336 default:
6337 for (i = 0; items[i].text; i++)
6338 if (items[i].hotkey == key) {
6339 *selected = i;
6340 status = INPUT_STOP;
6341 break;
6342 }
6343 }
6344 }
6346 /* Clear the status window */
6347 status_empty = FALSE;
6348 report("");
6350 return status != INPUT_CANCEL;
6351 }
6353 /*
6354 * Repository properties
6355 */
6357 static struct ref **refs = NULL;
6358 static size_t refs_size = 0;
6359 static struct ref *refs_head = NULL;
6361 static struct ref_list **ref_lists = NULL;
6362 static size_t ref_lists_size = 0;
6364 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6365 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6366 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6368 static int
6369 compare_refs(const void *ref1_, const void *ref2_)
6370 {
6371 const struct ref *ref1 = *(const struct ref **)ref1_;
6372 const struct ref *ref2 = *(const struct ref **)ref2_;
6374 if (ref1->tag != ref2->tag)
6375 return ref2->tag - ref1->tag;
6376 if (ref1->ltag != ref2->ltag)
6377 return ref2->ltag - ref2->ltag;
6378 if (ref1->head != ref2->head)
6379 return ref2->head - ref1->head;
6380 if (ref1->tracked != ref2->tracked)
6381 return ref2->tracked - ref1->tracked;
6382 if (ref1->remote != ref2->remote)
6383 return ref2->remote - ref1->remote;
6384 return strcmp(ref1->name, ref2->name);
6385 }
6387 static void
6388 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6389 {
6390 size_t i;
6392 for (i = 0; i < refs_size; i++)
6393 if (!visitor(data, refs[i]))
6394 break;
6395 }
6397 static struct ref *
6398 get_ref_head()
6399 {
6400 return refs_head;
6401 }
6403 static struct ref_list *
6404 get_ref_list(const char *id)
6405 {
6406 struct ref_list *list;
6407 size_t i;
6409 for (i = 0; i < ref_lists_size; i++)
6410 if (!strcmp(id, ref_lists[i]->id))
6411 return ref_lists[i];
6413 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6414 return NULL;
6415 list = calloc(1, sizeof(*list));
6416 if (!list)
6417 return NULL;
6419 for (i = 0; i < refs_size; i++) {
6420 if (!strcmp(id, refs[i]->id) &&
6421 realloc_refs_list(&list->refs, list->size, 1))
6422 list->refs[list->size++] = refs[i];
6423 }
6425 if (!list->refs) {
6426 free(list);
6427 return NULL;
6428 }
6430 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6431 ref_lists[ref_lists_size++] = list;
6432 return list;
6433 }
6435 static int
6436 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6437 {
6438 struct ref *ref = NULL;
6439 bool tag = FALSE;
6440 bool ltag = FALSE;
6441 bool remote = FALSE;
6442 bool tracked = FALSE;
6443 bool head = FALSE;
6444 int from = 0, to = refs_size - 1;
6446 if (!prefixcmp(name, "refs/tags/")) {
6447 if (!suffixcmp(name, namelen, "^{}")) {
6448 namelen -= 3;
6449 name[namelen] = 0;
6450 } else {
6451 ltag = TRUE;
6452 }
6454 tag = TRUE;
6455 namelen -= STRING_SIZE("refs/tags/");
6456 name += STRING_SIZE("refs/tags/");
6458 } else if (!prefixcmp(name, "refs/remotes/")) {
6459 remote = TRUE;
6460 namelen -= STRING_SIZE("refs/remotes/");
6461 name += STRING_SIZE("refs/remotes/");
6462 tracked = !strcmp(opt_remote, name);
6464 } else if (!prefixcmp(name, "refs/heads/")) {
6465 namelen -= STRING_SIZE("refs/heads/");
6466 name += STRING_SIZE("refs/heads/");
6467 if (!strncmp(opt_head, name, namelen))
6468 return OK;
6470 } else if (!strcmp(name, "HEAD")) {
6471 head = TRUE;
6472 if (*opt_head) {
6473 namelen = strlen(opt_head);
6474 name = opt_head;
6475 }
6476 }
6478 /* If we are reloading or it's an annotated tag, replace the
6479 * previous SHA1 with the resolved commit id; relies on the fact
6480 * git-ls-remote lists the commit id of an annotated tag right
6481 * before the commit id it points to. */
6482 while (from <= to) {
6483 size_t pos = (to + from) / 2;
6484 int cmp = strcmp(name, refs[pos]->name);
6486 if (!cmp) {
6487 ref = refs[pos];
6488 break;
6489 }
6491 if (cmp < 0)
6492 to = pos - 1;
6493 else
6494 from = pos + 1;
6495 }
6497 if (!ref) {
6498 if (!realloc_refs(&refs, refs_size, 1))
6499 return ERR;
6500 ref = calloc(1, sizeof(*ref) + namelen);
6501 if (!ref)
6502 return ERR;
6503 memmove(refs + from + 1, refs + from,
6504 (refs_size - from) * sizeof(*refs));
6505 refs[from] = ref;
6506 strncpy(ref->name, name, namelen);
6507 refs_size++;
6508 }
6510 ref->head = head;
6511 ref->tag = tag;
6512 ref->ltag = ltag;
6513 ref->remote = remote;
6514 ref->tracked = tracked;
6515 string_copy_rev(ref->id, id);
6517 if (head)
6518 refs_head = ref;
6519 return OK;
6520 }
6522 static int
6523 load_refs(void)
6524 {
6525 const char *head_argv[] = {
6526 "git", "symbolic-ref", "HEAD", NULL
6527 };
6528 static const char *ls_remote_argv[SIZEOF_ARG] = {
6529 "git", "ls-remote", opt_git_dir, NULL
6530 };
6531 static bool init = FALSE;
6532 size_t i;
6534 if (!init) {
6535 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6536 die("TIG_LS_REMOTE contains too many arguments");
6537 init = TRUE;
6538 }
6540 if (!*opt_git_dir)
6541 return OK;
6543 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6544 !prefixcmp(opt_head, "refs/heads/")) {
6545 char *offset = opt_head + STRING_SIZE("refs/heads/");
6547 memmove(opt_head, offset, strlen(offset) + 1);
6548 }
6550 refs_head = NULL;
6551 for (i = 0; i < refs_size; i++)
6552 refs[i]->id[0] = 0;
6554 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6555 return ERR;
6557 /* Update the ref lists to reflect changes. */
6558 for (i = 0; i < ref_lists_size; i++) {
6559 struct ref_list *list = ref_lists[i];
6560 size_t old, new;
6562 for (old = new = 0; old < list->size; old++)
6563 if (!strcmp(list->id, list->refs[old]->id))
6564 list->refs[new++] = list->refs[old];
6565 list->size = new;
6566 }
6568 return OK;
6569 }
6571 static void
6572 set_remote_branch(const char *name, const char *value, size_t valuelen)
6573 {
6574 if (!strcmp(name, ".remote")) {
6575 string_ncopy(opt_remote, value, valuelen);
6577 } else if (*opt_remote && !strcmp(name, ".merge")) {
6578 size_t from = strlen(opt_remote);
6580 if (!prefixcmp(value, "refs/heads/"))
6581 value += STRING_SIZE("refs/heads/");
6583 if (!string_format_from(opt_remote, &from, "/%s", value))
6584 opt_remote[0] = 0;
6585 }
6586 }
6588 static void
6589 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6590 {
6591 const char *argv[SIZEOF_ARG] = { name, "=" };
6592 int argc = 1 + (cmd == option_set_command);
6593 enum option_code error;
6595 if (!argv_from_string(argv, &argc, value))
6596 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6597 else
6598 error = cmd(argc, argv);
6600 if (error != OPT_OK)
6601 warn("Option 'tig.%s': %s", name, option_errors[error]);
6602 }
6604 static bool
6605 set_environment_variable(const char *name, const char *value)
6606 {
6607 size_t len = strlen(name) + 1 + strlen(value) + 1;
6608 char *env = malloc(len);
6610 if (env &&
6611 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6612 putenv(env) == 0)
6613 return TRUE;
6614 free(env);
6615 return FALSE;
6616 }
6618 static void
6619 set_work_tree(const char *value)
6620 {
6621 char cwd[SIZEOF_STR];
6623 if (!getcwd(cwd, sizeof(cwd)))
6624 die("Failed to get cwd path: %s", strerror(errno));
6625 if (chdir(opt_git_dir) < 0)
6626 die("Failed to chdir(%s): %s", strerror(errno));
6627 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6628 die("Failed to get git path: %s", strerror(errno));
6629 if (chdir(cwd) < 0)
6630 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6631 if (chdir(value) < 0)
6632 die("Failed to chdir(%s): %s", value, strerror(errno));
6633 if (!getcwd(cwd, sizeof(cwd)))
6634 die("Failed to get cwd path: %s", strerror(errno));
6635 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6636 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6637 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6638 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6639 opt_is_inside_work_tree = TRUE;
6640 }
6642 static int
6643 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6644 {
6645 if (!strcmp(name, "i18n.commitencoding"))
6646 string_ncopy(opt_encoding, value, valuelen);
6648 else if (!strcmp(name, "core.editor"))
6649 string_ncopy(opt_editor, value, valuelen);
6651 else if (!strcmp(name, "core.worktree"))
6652 set_work_tree(value);
6654 else if (!prefixcmp(name, "tig.color."))
6655 set_repo_config_option(name + 10, value, option_color_command);
6657 else if (!prefixcmp(name, "tig.bind."))
6658 set_repo_config_option(name + 9, value, option_bind_command);
6660 else if (!prefixcmp(name, "tig."))
6661 set_repo_config_option(name + 4, value, option_set_command);
6663 else if (*opt_head && !prefixcmp(name, "branch.") &&
6664 !strncmp(name + 7, opt_head, strlen(opt_head)))
6665 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6667 return OK;
6668 }
6670 static int
6671 load_git_config(void)
6672 {
6673 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6675 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6676 }
6678 static int
6679 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6680 {
6681 if (!opt_git_dir[0]) {
6682 string_ncopy(opt_git_dir, name, namelen);
6684 } else if (opt_is_inside_work_tree == -1) {
6685 /* This can be 3 different values depending on the
6686 * version of git being used. If git-rev-parse does not
6687 * understand --is-inside-work-tree it will simply echo
6688 * the option else either "true" or "false" is printed.
6689 * Default to true for the unknown case. */
6690 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6692 } else if (*name == '.') {
6693 string_ncopy(opt_cdup, name, namelen);
6695 } else {
6696 string_ncopy(opt_prefix, name, namelen);
6697 }
6699 return OK;
6700 }
6702 static int
6703 load_repo_info(void)
6704 {
6705 const char *rev_parse_argv[] = {
6706 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6707 "--show-cdup", "--show-prefix", NULL
6708 };
6710 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6711 }
6714 /*
6715 * Main
6716 */
6718 static const char usage[] =
6719 "tig " TIG_VERSION " (" __DATE__ ")\n"
6720 "\n"
6721 "Usage: tig [options] [revs] [--] [paths]\n"
6722 " or: tig show [options] [revs] [--] [paths]\n"
6723 " or: tig blame [options] [rev] [--] path\n"
6724 " or: tig status\n"
6725 " or: tig < [git command output]\n"
6726 "\n"
6727 "Options:\n"
6728 " -v, --version Show version and exit\n"
6729 " -h, --help Show help message and exit";
6731 static void __NORETURN
6732 quit(int sig)
6733 {
6734 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6735 if (cursed)
6736 endwin();
6737 exit(0);
6738 }
6740 static void __NORETURN
6741 die(const char *err, ...)
6742 {
6743 va_list args;
6745 endwin();
6747 va_start(args, err);
6748 fputs("tig: ", stderr);
6749 vfprintf(stderr, err, args);
6750 fputs("\n", stderr);
6751 va_end(args);
6753 exit(1);
6754 }
6756 static void
6757 warn(const char *msg, ...)
6758 {
6759 va_list args;
6761 va_start(args, msg);
6762 fputs("tig warning: ", stderr);
6763 vfprintf(stderr, msg, args);
6764 fputs("\n", stderr);
6765 va_end(args);
6766 }
6768 static int
6769 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6770 {
6771 const char ***filter_args = data;
6773 return argv_append(filter_args, name) ? OK : ERR;
6774 }
6776 static void
6777 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6778 {
6779 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6780 const char **all_argv = NULL;
6782 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6783 !argv_append_array(&all_argv, argv) ||
6784 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6785 die("Failed to split arguments");
6786 argv_free(all_argv);
6787 free(all_argv);
6788 }
6790 static void
6791 filter_options(const char *argv[])
6792 {
6793 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6794 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6795 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6796 }
6798 static enum request
6799 parse_options(int argc, const char *argv[])
6800 {
6801 enum request request = REQ_VIEW_MAIN;
6802 const char *subcommand;
6803 bool seen_dashdash = FALSE;
6804 const char **filter_argv = NULL;
6805 int i;
6807 if (!isatty(STDIN_FILENO))
6808 return REQ_VIEW_PAGER;
6810 if (argc <= 1)
6811 return REQ_VIEW_MAIN;
6813 subcommand = argv[1];
6814 if (!strcmp(subcommand, "status")) {
6815 if (argc > 2)
6816 warn("ignoring arguments after `%s'", subcommand);
6817 return REQ_VIEW_STATUS;
6819 } else if (!strcmp(subcommand, "blame")) {
6820 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6821 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6822 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6824 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6825 die("invalid number of options to blame\n\n%s", usage);
6827 if (opt_rev_argv) {
6828 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6829 }
6831 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6832 return REQ_VIEW_BLAME;
6834 } else if (!strcmp(subcommand, "show")) {
6835 request = REQ_VIEW_DIFF;
6837 } else {
6838 subcommand = NULL;
6839 }
6841 for (i = 1 + !!subcommand; i < argc; i++) {
6842 const char *opt = argv[i];
6844 if (seen_dashdash) {
6845 argv_append(&opt_file_argv, opt);
6846 continue;
6848 } else if (!strcmp(opt, "--")) {
6849 seen_dashdash = TRUE;
6850 continue;
6852 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6853 printf("tig version %s\n", TIG_VERSION);
6854 quit(0);
6856 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6857 printf("%s\n", usage);
6858 quit(0);
6860 } else if (!strcmp(opt, "--all")) {
6861 argv_append(&opt_rev_argv, opt);
6862 continue;
6863 }
6865 if (!argv_append(&filter_argv, opt))
6866 die("command too long");
6867 }
6869 if (filter_argv)
6870 filter_options(filter_argv);
6872 return request;
6873 }
6875 int
6876 main(int argc, const char *argv[])
6877 {
6878 const char *codeset = "UTF-8";
6879 enum request request = parse_options(argc, argv);
6880 struct view *view;
6882 signal(SIGINT, quit);
6883 signal(SIGPIPE, SIG_IGN);
6885 if (setlocale(LC_ALL, "")) {
6886 codeset = nl_langinfo(CODESET);
6887 }
6889 if (load_repo_info() == ERR)
6890 die("Failed to load repo info.");
6892 if (load_options() == ERR)
6893 die("Failed to load user config.");
6895 if (load_git_config() == ERR)
6896 die("Failed to load repo config.");
6898 /* Require a git repository unless when running in pager mode. */
6899 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6900 die("Not a git repository");
6902 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6903 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6904 if (opt_iconv_in == ICONV_NONE)
6905 die("Failed to initialize character set conversion");
6906 }
6908 if (codeset && strcmp(codeset, "UTF-8")) {
6909 opt_iconv_out = iconv_open(codeset, "UTF-8");
6910 if (opt_iconv_out == ICONV_NONE)
6911 die("Failed to initialize character set conversion");
6912 }
6914 if (load_refs() == ERR)
6915 die("Failed to load refs.");
6917 init_display();
6919 while (view_driver(display[current_view], request)) {
6920 int key = get_input(0);
6922 view = display[current_view];
6923 request = get_keybinding(view->keymap, key);
6925 /* Some low-level request handling. This keeps access to
6926 * status_win restricted. */
6927 switch (request) {
6928 case REQ_NONE:
6929 report("Unknown key, press %s for help",
6930 get_key(view->keymap, REQ_VIEW_HELP));
6931 break;
6932 case REQ_PROMPT:
6933 {
6934 char *cmd = read_prompt(":");
6936 if (cmd && isdigit(*cmd)) {
6937 int lineno = view->lineno + 1;
6939 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6940 select_view_line(view, lineno - 1);
6941 report("");
6942 } else {
6943 report("Unable to parse '%s' as a line number", cmd);
6944 }
6946 } else if (cmd) {
6947 struct view *next = VIEW(REQ_VIEW_PAGER);
6948 const char *argv[SIZEOF_ARG] = { "git" };
6949 int argc = 1;
6951 /* When running random commands, initially show the
6952 * command in the title. However, it maybe later be
6953 * overwritten if a commit line is selected. */
6954 string_ncopy(next->ref, cmd, strlen(cmd));
6956 if (!argv_from_string(argv, &argc, cmd)) {
6957 report("Too many arguments");
6958 } else {
6959 open_argv(view, next, argv, NULL, OPEN_DEFAULT);
6960 }
6961 }
6963 request = REQ_NONE;
6964 break;
6965 }
6966 case REQ_SEARCH:
6967 case REQ_SEARCH_BACK:
6968 {
6969 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6970 char *search = read_prompt(prompt);
6972 if (search)
6973 string_ncopy(opt_search, search, strlen(search));
6974 else if (*opt_search)
6975 request = request == REQ_SEARCH ?
6976 REQ_FIND_NEXT :
6977 REQ_FIND_PREV;
6978 else
6979 request = REQ_NONE;
6980 break;
6981 }
6982 default:
6983 break;
6984 }
6985 }
6987 quit(0);
6989 return 0;
6990 }