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1 /* Copyright (c) 2006-2010 Jonas Fonseca <fonseca@diku.dk>
2 *
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
14 #include "tig.h"
15 #include "io.h"
16 #include "graph.h"
18 static void __NORETURN die(const char *err, ...);
19 static void warn(const char *msg, ...);
20 static void report(const char *msg, ...);
23 struct ref {
24 char id[SIZEOF_REV]; /* Commit SHA1 ID */
25 unsigned int head:1; /* Is it the current HEAD? */
26 unsigned int tag:1; /* Is it a tag? */
27 unsigned int ltag:1; /* If so, is the tag local? */
28 unsigned int remote:1; /* Is it a remote ref? */
29 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
30 char name[1]; /* Ref name; tag or head names are shortened. */
31 };
33 struct ref_list {
34 char id[SIZEOF_REV]; /* Commit SHA1 ID */
35 size_t size; /* Number of refs. */
36 struct ref **refs; /* References for this ID. */
37 };
39 static struct ref *get_ref_head();
40 static struct ref_list *get_ref_list(const char *id);
41 static void foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data);
42 static int load_refs(void);
44 enum input_status {
45 INPUT_OK,
46 INPUT_SKIP,
47 INPUT_STOP,
48 INPUT_CANCEL
49 };
51 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
53 static char *prompt_input(const char *prompt, input_handler handler, void *data);
54 static bool prompt_yesno(const char *prompt);
56 struct menu_item {
57 int hotkey;
58 const char *text;
59 void *data;
60 };
62 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected);
64 enum graphic {
65 GRAPHIC_ASCII = 0,
66 GRAPHIC_DEFAULT,
67 GRAPHIC_UTF8
68 };
70 static const struct enum_map graphic_map[] = {
71 #define GRAPHIC_(name) ENUM_MAP(#name, GRAPHIC_##name)
72 GRAPHIC_(ASCII),
73 GRAPHIC_(DEFAULT),
74 GRAPHIC_(UTF8)
75 #undef GRAPHIC_
76 };
78 #define DATE_INFO \
79 DATE_(NO), \
80 DATE_(DEFAULT), \
81 DATE_(LOCAL), \
82 DATE_(RELATIVE), \
83 DATE_(SHORT)
85 enum date {
86 #define DATE_(name) DATE_##name
87 DATE_INFO
88 #undef DATE_
89 };
91 static const struct enum_map date_map[] = {
92 #define DATE_(name) ENUM_MAP(#name, DATE_##name)
93 DATE_INFO
94 #undef DATE_
95 };
97 struct time {
98 time_t sec;
99 int tz;
100 };
102 static inline int timecmp(const struct time *t1, const struct time *t2)
103 {
104 return t1->sec - t2->sec;
105 }
107 static const char *
108 mkdate(const struct time *time, enum date date)
109 {
110 static char buf[DATE_COLS + 1];
111 static const struct enum_map reldate[] = {
112 { "second", 1, 60 * 2 },
113 { "minute", 60, 60 * 60 * 2 },
114 { "hour", 60 * 60, 60 * 60 * 24 * 2 },
115 { "day", 60 * 60 * 24, 60 * 60 * 24 * 7 * 2 },
116 { "week", 60 * 60 * 24 * 7, 60 * 60 * 24 * 7 * 5 },
117 { "month", 60 * 60 * 24 * 30, 60 * 60 * 24 * 30 * 12 },
118 };
119 struct tm tm;
121 if (!date || !time || !time->sec)
122 return "";
124 if (date == DATE_RELATIVE) {
125 struct timeval now;
126 time_t date = time->sec + time->tz;
127 time_t seconds;
128 int i;
130 gettimeofday(&now, NULL);
131 seconds = now.tv_sec < date ? date - now.tv_sec : now.tv_sec - date;
132 for (i = 0; i < ARRAY_SIZE(reldate); i++) {
133 if (seconds >= reldate[i].value)
134 continue;
136 seconds /= reldate[i].namelen;
137 if (!string_format(buf, "%ld %s%s %s",
138 seconds, reldate[i].name,
139 seconds > 1 ? "s" : "",
140 now.tv_sec >= date ? "ago" : "ahead"))
141 break;
142 return buf;
143 }
144 }
146 if (date == DATE_LOCAL) {
147 time_t date = time->sec + time->tz;
148 localtime_r(&date, &tm);
149 }
150 else {
151 gmtime_r(&time->sec, &tm);
152 }
153 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
154 }
157 #define AUTHOR_VALUES \
158 AUTHOR_(NO), \
159 AUTHOR_(FULL), \
160 AUTHOR_(ABBREVIATED)
162 enum author {
163 #define AUTHOR_(name) AUTHOR_##name
164 AUTHOR_VALUES,
165 #undef AUTHOR_
166 AUTHOR_DEFAULT = AUTHOR_FULL
167 };
169 static const struct enum_map author_map[] = {
170 #define AUTHOR_(name) ENUM_MAP(#name, AUTHOR_##name)
171 AUTHOR_VALUES
172 #undef AUTHOR_
173 };
175 static const char *
176 get_author_initials(const char *author)
177 {
178 static char initials[AUTHOR_COLS * 6 + 1];
179 size_t pos = 0;
180 const char *end = strchr(author, '\0');
182 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@' || (c) == '-')
184 memset(initials, 0, sizeof(initials));
185 while (author < end) {
186 unsigned char bytes;
187 size_t i;
189 while (is_initial_sep(*author))
190 author++;
192 bytes = utf8_char_length(author, end);
193 if (bytes < sizeof(initials) - 1 - pos) {
194 while (bytes--) {
195 initials[pos++] = *author++;
196 }
197 }
199 for (i = pos; author < end && !is_initial_sep(*author); author++) {
200 if (i < sizeof(initials) - 1)
201 initials[i++] = *author;
202 }
204 initials[i++] = 0;
205 }
207 return initials;
208 }
211 /*
212 * User requests
213 */
215 #define REQ_INFO \
216 /* XXX: Keep the view request first and in sync with views[]. */ \
217 REQ_GROUP("View switching") \
218 REQ_(VIEW_MAIN, "Show main view"), \
219 REQ_(VIEW_DIFF, "Show diff view"), \
220 REQ_(VIEW_LOG, "Show log view"), \
221 REQ_(VIEW_TREE, "Show tree view"), \
222 REQ_(VIEW_BLOB, "Show blob view"), \
223 REQ_(VIEW_BLAME, "Show blame view"), \
224 REQ_(VIEW_BRANCH, "Show branch view"), \
225 REQ_(VIEW_HELP, "Show help page"), \
226 REQ_(VIEW_PAGER, "Show pager view"), \
227 REQ_(VIEW_STATUS, "Show status view"), \
228 REQ_(VIEW_STAGE, "Show stage view"), \
229 \
230 REQ_GROUP("View manipulation") \
231 REQ_(ENTER, "Enter current line and scroll"), \
232 REQ_(NEXT, "Move to next"), \
233 REQ_(PREVIOUS, "Move to previous"), \
234 REQ_(PARENT, "Move to parent"), \
235 REQ_(VIEW_NEXT, "Move focus to next view"), \
236 REQ_(REFRESH, "Reload and refresh"), \
237 REQ_(MAXIMIZE, "Maximize the current view"), \
238 REQ_(VIEW_CLOSE, "Close the current view"), \
239 REQ_(QUIT, "Close all views and quit"), \
240 \
241 REQ_GROUP("View specific requests") \
242 REQ_(STATUS_UPDATE, "Update file status"), \
243 REQ_(STATUS_REVERT, "Revert file changes"), \
244 REQ_(STATUS_MERGE, "Merge file using external tool"), \
245 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
246 \
247 REQ_GROUP("Cursor navigation") \
248 REQ_(MOVE_UP, "Move cursor one line up"), \
249 REQ_(MOVE_DOWN, "Move cursor one line down"), \
250 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
251 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
252 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
253 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
254 \
255 REQ_GROUP("Scrolling") \
256 REQ_(SCROLL_FIRST_COL, "Scroll to the first line columns"), \
257 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
258 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
259 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
260 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
261 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
262 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
263 \
264 REQ_GROUP("Searching") \
265 REQ_(SEARCH, "Search the view"), \
266 REQ_(SEARCH_BACK, "Search backwards in the view"), \
267 REQ_(FIND_NEXT, "Find next search match"), \
268 REQ_(FIND_PREV, "Find previous search match"), \
269 \
270 REQ_GROUP("Option manipulation") \
271 REQ_(OPTIONS, "Open option menu"), \
272 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
273 REQ_(TOGGLE_DATE, "Toggle date display"), \
274 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
275 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
276 REQ_(TOGGLE_GRAPHIC, "Toggle (line) graphics mode"), \
277 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
278 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
279 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
280 \
281 REQ_GROUP("Misc") \
282 REQ_(PROMPT, "Bring up the prompt"), \
283 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
284 REQ_(SHOW_VERSION, "Show version information"), \
285 REQ_(STOP_LOADING, "Stop all loading views"), \
286 REQ_(EDIT, "Open in editor"), \
287 REQ_(NONE, "Do nothing")
290 /* User action requests. */
291 enum request {
292 #define REQ_GROUP(help)
293 #define REQ_(req, help) REQ_##req
295 /* Offset all requests to avoid conflicts with ncurses getch values. */
296 REQ_UNKNOWN = KEY_MAX + 1,
297 REQ_OFFSET,
298 REQ_INFO
300 #undef REQ_GROUP
301 #undef REQ_
302 };
304 struct request_info {
305 enum request request;
306 const char *name;
307 int namelen;
308 const char *help;
309 };
311 static const struct request_info req_info[] = {
312 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
313 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
314 REQ_INFO
315 #undef REQ_GROUP
316 #undef REQ_
317 };
319 static enum request
320 get_request(const char *name)
321 {
322 int namelen = strlen(name);
323 int i;
325 for (i = 0; i < ARRAY_SIZE(req_info); i++)
326 if (enum_equals(req_info[i], name, namelen))
327 return req_info[i].request;
329 return REQ_UNKNOWN;
330 }
333 /*
334 * Options
335 */
337 /* Option and state variables. */
338 static enum graphic opt_line_graphics = GRAPHIC_DEFAULT;
339 static enum date opt_date = DATE_DEFAULT;
340 static enum author opt_author = AUTHOR_DEFAULT;
341 static bool opt_rev_graph = TRUE;
342 static bool opt_line_number = FALSE;
343 static bool opt_show_refs = TRUE;
344 static bool opt_untracked_dirs_content = TRUE;
345 static int opt_num_interval = 5;
346 static double opt_hscroll = 0.50;
347 static double opt_scale_split_view = 2.0 / 3.0;
348 static int opt_tab_size = 8;
349 static int opt_author_cols = AUTHOR_COLS;
350 static char opt_path[SIZEOF_STR] = "";
351 static char opt_file[SIZEOF_STR] = "";
352 static char opt_ref[SIZEOF_REF] = "";
353 static char opt_head[SIZEOF_REF] = "";
354 static char opt_remote[SIZEOF_REF] = "";
355 static char opt_encoding[20] = "UTF-8";
356 static iconv_t opt_iconv_in = ICONV_NONE;
357 static iconv_t opt_iconv_out = ICONV_NONE;
358 static char opt_search[SIZEOF_STR] = "";
359 static char opt_cdup[SIZEOF_STR] = "";
360 static char opt_prefix[SIZEOF_STR] = "";
361 static char opt_git_dir[SIZEOF_STR] = "";
362 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
363 static char opt_editor[SIZEOF_STR] = "";
364 static FILE *opt_tty = NULL;
365 static const char **opt_diff_argv = NULL;
366 static const char **opt_rev_argv = NULL;
367 static const char **opt_file_argv = NULL;
368 static const char **opt_blame_argv = NULL;
370 #define is_initial_commit() (!get_ref_head())
371 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strcmp(rev, get_ref_head()->id)))
374 /*
375 * Line-oriented content detection.
376 */
378 #define LINE_INFO \
379 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
380 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
381 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
382 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
383 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
384 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
385 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
386 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
387 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
388 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
389 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
390 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
391 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
392 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
393 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
394 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
395 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
396 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
397 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
398 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
399 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
400 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
401 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
402 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
403 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
404 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
405 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
406 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
407 LINE(TESTED, " Tested-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
408 LINE(REVIEWED, " Reviewed-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
409 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
410 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
411 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
412 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
413 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
414 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
415 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
416 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
417 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
418 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
419 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
420 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
421 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
422 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
423 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
424 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
425 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
426 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
427 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
428 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
429 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
430 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
431 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
432 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
433 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
434 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
435 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
436 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
437 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
438 LINE(GRAPH_LINE_0, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
439 LINE(GRAPH_LINE_1, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
440 LINE(GRAPH_LINE_2, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
441 LINE(GRAPH_LINE_3, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
442 LINE(GRAPH_LINE_4, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
443 LINE(GRAPH_LINE_5, "", COLOR_WHITE, COLOR_DEFAULT, 0), \
444 LINE(GRAPH_LINE_6, "", COLOR_RED, COLOR_DEFAULT, 0), \
445 LINE(GRAPH_COMMIT, "", COLOR_BLUE, COLOR_DEFAULT, 0)
447 enum line_type {
448 #define LINE(type, line, fg, bg, attr) \
449 LINE_##type
450 LINE_INFO,
451 LINE_NONE
452 #undef LINE
453 };
455 struct line_info {
456 const char *name; /* Option name. */
457 int namelen; /* Size of option name. */
458 const char *line; /* The start of line to match. */
459 int linelen; /* Size of string to match. */
460 int fg, bg, attr; /* Color and text attributes for the lines. */
461 };
463 static struct line_info line_info[] = {
464 #define LINE(type, line, fg, bg, attr) \
465 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
466 LINE_INFO
467 #undef LINE
468 };
470 static enum line_type
471 get_line_type(const char *line)
472 {
473 int linelen = strlen(line);
474 enum line_type type;
476 for (type = 0; type < ARRAY_SIZE(line_info); type++)
477 /* Case insensitive search matches Signed-off-by lines better. */
478 if (linelen >= line_info[type].linelen &&
479 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
480 return type;
482 return LINE_DEFAULT;
483 }
485 static inline int
486 get_line_attr(enum line_type type)
487 {
488 assert(type < ARRAY_SIZE(line_info));
489 return COLOR_PAIR(type) | line_info[type].attr;
490 }
492 static struct line_info *
493 get_line_info(const char *name)
494 {
495 size_t namelen = strlen(name);
496 enum line_type type;
498 for (type = 0; type < ARRAY_SIZE(line_info); type++)
499 if (enum_equals(line_info[type], name, namelen))
500 return &line_info[type];
502 return NULL;
503 }
505 static void
506 init_colors(void)
507 {
508 int default_bg = line_info[LINE_DEFAULT].bg;
509 int default_fg = line_info[LINE_DEFAULT].fg;
510 enum line_type type;
512 start_color();
514 if (assume_default_colors(default_fg, default_bg) == ERR) {
515 default_bg = COLOR_BLACK;
516 default_fg = COLOR_WHITE;
517 }
519 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
520 struct line_info *info = &line_info[type];
521 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
522 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
524 init_pair(type, fg, bg);
525 }
526 }
528 struct line {
529 enum line_type type;
531 /* State flags */
532 unsigned int selected:1;
533 unsigned int dirty:1;
534 unsigned int cleareol:1;
535 unsigned int other:16;
537 void *data; /* User data */
538 };
541 /*
542 * Keys
543 */
545 struct keybinding {
546 int alias;
547 enum request request;
548 };
550 static struct keybinding default_keybindings[] = {
551 /* View switching */
552 { 'm', REQ_VIEW_MAIN },
553 { 'd', REQ_VIEW_DIFF },
554 { 'l', REQ_VIEW_LOG },
555 { 't', REQ_VIEW_TREE },
556 { 'f', REQ_VIEW_BLOB },
557 { 'B', REQ_VIEW_BLAME },
558 { 'H', REQ_VIEW_BRANCH },
559 { 'p', REQ_VIEW_PAGER },
560 { 'h', REQ_VIEW_HELP },
561 { 'S', REQ_VIEW_STATUS },
562 { 'c', REQ_VIEW_STAGE },
564 /* View manipulation */
565 { 'q', REQ_VIEW_CLOSE },
566 { KEY_TAB, REQ_VIEW_NEXT },
567 { KEY_RETURN, REQ_ENTER },
568 { KEY_UP, REQ_PREVIOUS },
569 { KEY_CTL('P'), REQ_PREVIOUS },
570 { KEY_DOWN, REQ_NEXT },
571 { KEY_CTL('N'), REQ_NEXT },
572 { 'R', REQ_REFRESH },
573 { KEY_F(5), REQ_REFRESH },
574 { 'O', REQ_MAXIMIZE },
576 /* Cursor navigation */
577 { 'k', REQ_MOVE_UP },
578 { 'j', REQ_MOVE_DOWN },
579 { KEY_HOME, REQ_MOVE_FIRST_LINE },
580 { KEY_END, REQ_MOVE_LAST_LINE },
581 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
582 { KEY_CTL('D'), REQ_MOVE_PAGE_DOWN },
583 { ' ', REQ_MOVE_PAGE_DOWN },
584 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
585 { KEY_CTL('U'), REQ_MOVE_PAGE_UP },
586 { 'b', REQ_MOVE_PAGE_UP },
587 { '-', REQ_MOVE_PAGE_UP },
589 /* Scrolling */
590 { '|', REQ_SCROLL_FIRST_COL },
591 { KEY_LEFT, REQ_SCROLL_LEFT },
592 { KEY_RIGHT, REQ_SCROLL_RIGHT },
593 { KEY_IC, REQ_SCROLL_LINE_UP },
594 { KEY_CTL('Y'), REQ_SCROLL_LINE_UP },
595 { KEY_DC, REQ_SCROLL_LINE_DOWN },
596 { KEY_CTL('E'), REQ_SCROLL_LINE_DOWN },
597 { 'w', REQ_SCROLL_PAGE_UP },
598 { 's', REQ_SCROLL_PAGE_DOWN },
600 /* Searching */
601 { '/', REQ_SEARCH },
602 { '?', REQ_SEARCH_BACK },
603 { 'n', REQ_FIND_NEXT },
604 { 'N', REQ_FIND_PREV },
606 /* Misc */
607 { 'Q', REQ_QUIT },
608 { 'z', REQ_STOP_LOADING },
609 { 'v', REQ_SHOW_VERSION },
610 { 'r', REQ_SCREEN_REDRAW },
611 { KEY_CTL('L'), REQ_SCREEN_REDRAW },
612 { 'o', REQ_OPTIONS },
613 { '.', REQ_TOGGLE_LINENO },
614 { 'D', REQ_TOGGLE_DATE },
615 { 'A', REQ_TOGGLE_AUTHOR },
616 { 'g', REQ_TOGGLE_REV_GRAPH },
617 { '~', REQ_TOGGLE_GRAPHIC },
618 { 'F', REQ_TOGGLE_REFS },
619 { 'I', REQ_TOGGLE_SORT_ORDER },
620 { 'i', REQ_TOGGLE_SORT_FIELD },
621 { ':', REQ_PROMPT },
622 { 'u', REQ_STATUS_UPDATE },
623 { '!', REQ_STATUS_REVERT },
624 { 'M', REQ_STATUS_MERGE },
625 { '@', REQ_STAGE_NEXT },
626 { ',', REQ_PARENT },
627 { 'e', REQ_EDIT },
628 };
630 #define KEYMAP_INFO \
631 KEYMAP_(GENERIC), \
632 KEYMAP_(MAIN), \
633 KEYMAP_(DIFF), \
634 KEYMAP_(LOG), \
635 KEYMAP_(TREE), \
636 KEYMAP_(BLOB), \
637 KEYMAP_(BLAME), \
638 KEYMAP_(BRANCH), \
639 KEYMAP_(PAGER), \
640 KEYMAP_(HELP), \
641 KEYMAP_(STATUS), \
642 KEYMAP_(STAGE)
644 enum keymap {
645 #define KEYMAP_(name) KEYMAP_##name
646 KEYMAP_INFO
647 #undef KEYMAP_
648 };
650 static const struct enum_map keymap_table[] = {
651 #define KEYMAP_(name) ENUM_MAP(#name, KEYMAP_##name)
652 KEYMAP_INFO
653 #undef KEYMAP_
654 };
656 #define set_keymap(map, name) map_enum(map, keymap_table, name)
658 struct keybinding_table {
659 struct keybinding *data;
660 size_t size;
661 };
663 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
665 static void
666 add_keybinding(enum keymap keymap, enum request request, int key)
667 {
668 struct keybinding_table *table = &keybindings[keymap];
669 size_t i;
671 for (i = 0; i < keybindings[keymap].size; i++) {
672 if (keybindings[keymap].data[i].alias == key) {
673 keybindings[keymap].data[i].request = request;
674 return;
675 }
676 }
678 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
679 if (!table->data)
680 die("Failed to allocate keybinding");
681 table->data[table->size].alias = key;
682 table->data[table->size++].request = request;
684 if (request == REQ_NONE && keymap == KEYMAP_GENERIC) {
685 int i;
687 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
688 if (default_keybindings[i].alias == key)
689 default_keybindings[i].request = REQ_NONE;
690 }
691 }
693 /* Looks for a key binding first in the given map, then in the generic map, and
694 * lastly in the default keybindings. */
695 static enum request
696 get_keybinding(enum keymap keymap, int key)
697 {
698 size_t i;
700 for (i = 0; i < keybindings[keymap].size; i++)
701 if (keybindings[keymap].data[i].alias == key)
702 return keybindings[keymap].data[i].request;
704 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
705 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
706 return keybindings[KEYMAP_GENERIC].data[i].request;
708 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
709 if (default_keybindings[i].alias == key)
710 return default_keybindings[i].request;
712 return (enum request) key;
713 }
716 struct key {
717 const char *name;
718 int value;
719 };
721 static const struct key key_table[] = {
722 { "Enter", KEY_RETURN },
723 { "Space", ' ' },
724 { "Backspace", KEY_BACKSPACE },
725 { "Tab", KEY_TAB },
726 { "Escape", KEY_ESC },
727 { "Left", KEY_LEFT },
728 { "Right", KEY_RIGHT },
729 { "Up", KEY_UP },
730 { "Down", KEY_DOWN },
731 { "Insert", KEY_IC },
732 { "Delete", KEY_DC },
733 { "Hash", '#' },
734 { "Home", KEY_HOME },
735 { "End", KEY_END },
736 { "PageUp", KEY_PPAGE },
737 { "PageDown", KEY_NPAGE },
738 { "F1", KEY_F(1) },
739 { "F2", KEY_F(2) },
740 { "F3", KEY_F(3) },
741 { "F4", KEY_F(4) },
742 { "F5", KEY_F(5) },
743 { "F6", KEY_F(6) },
744 { "F7", KEY_F(7) },
745 { "F8", KEY_F(8) },
746 { "F9", KEY_F(9) },
747 { "F10", KEY_F(10) },
748 { "F11", KEY_F(11) },
749 { "F12", KEY_F(12) },
750 };
752 static int
753 get_key_value(const char *name)
754 {
755 int i;
757 for (i = 0; i < ARRAY_SIZE(key_table); i++)
758 if (!strcasecmp(key_table[i].name, name))
759 return key_table[i].value;
761 if (strlen(name) == 2 && name[0] == '^' && isprint(*name))
762 return (int)name[1] & 0x1f;
763 if (strlen(name) == 1 && isprint(*name))
764 return (int) *name;
765 return ERR;
766 }
768 static const char *
769 get_key_name(int key_value)
770 {
771 static char key_char[] = "'X'\0";
772 const char *seq = NULL;
773 int key;
775 for (key = 0; key < ARRAY_SIZE(key_table); key++)
776 if (key_table[key].value == key_value)
777 seq = key_table[key].name;
779 if (seq == NULL && key_value < 0x7f) {
780 char *s = key_char + 1;
782 if (key_value >= 0x20) {
783 *s++ = key_value;
784 } else {
785 *s++ = '^';
786 *s++ = 0x40 | (key_value & 0x1f);
787 }
788 *s++ = '\'';
789 *s++ = '\0';
790 seq = key_char;
791 }
793 return seq ? seq : "(no key)";
794 }
796 static bool
797 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
798 {
799 const char *sep = *pos > 0 ? ", " : "";
800 const char *keyname = get_key_name(keybinding->alias);
802 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
803 }
805 static bool
806 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
807 enum keymap keymap, bool all)
808 {
809 int i;
811 for (i = 0; i < keybindings[keymap].size; i++) {
812 if (keybindings[keymap].data[i].request == request) {
813 if (!append_key(buf, pos, &keybindings[keymap].data[i]))
814 return FALSE;
815 if (!all)
816 break;
817 }
818 }
820 return TRUE;
821 }
823 #define get_key(keymap, request) get_keys(keymap, request, FALSE)
825 static const char *
826 get_keys(enum keymap keymap, enum request request, bool all)
827 {
828 static char buf[BUFSIZ];
829 size_t pos = 0;
830 int i;
832 buf[pos] = 0;
834 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
835 return "Too many keybindings!";
836 if (pos > 0 && !all)
837 return buf;
839 if (keymap != KEYMAP_GENERIC) {
840 /* Only the generic keymap includes the default keybindings when
841 * listing all keys. */
842 if (all)
843 return buf;
845 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
846 return "Too many keybindings!";
847 if (pos)
848 return buf;
849 }
851 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
852 if (default_keybindings[i].request == request) {
853 if (!append_key(buf, &pos, &default_keybindings[i]))
854 return "Too many keybindings!";
855 if (!all)
856 return buf;
857 }
858 }
860 return buf;
861 }
863 struct run_request {
864 enum keymap keymap;
865 int key;
866 const char **argv;
867 };
869 static struct run_request *run_request;
870 static size_t run_requests;
872 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
874 static enum request
875 add_run_request(enum keymap keymap, int key, const char **argv)
876 {
877 struct run_request *req;
879 if (!realloc_run_requests(&run_request, run_requests, 1))
880 return REQ_NONE;
882 req = &run_request[run_requests];
883 req->keymap = keymap;
884 req->key = key;
885 req->argv = NULL;
887 if (!argv_copy(&req->argv, argv))
888 return REQ_NONE;
890 return REQ_NONE + ++run_requests;
891 }
893 static struct run_request *
894 get_run_request(enum request request)
895 {
896 if (request <= REQ_NONE)
897 return NULL;
898 return &run_request[request - REQ_NONE - 1];
899 }
901 static void
902 add_builtin_run_requests(void)
903 {
904 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
905 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
906 const char *commit[] = { "git", "commit", NULL };
907 const char *gc[] = { "git", "gc", NULL };
908 struct run_request reqs[] = {
909 { KEYMAP_MAIN, 'C', cherry_pick },
910 { KEYMAP_STATUS, 'C', commit },
911 { KEYMAP_BRANCH, 'C', checkout },
912 { KEYMAP_GENERIC, 'G', gc },
913 };
914 int i;
916 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
917 enum request req = get_keybinding(reqs[i].keymap, reqs[i].key);
919 if (req != reqs[i].key)
920 continue;
921 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argv);
922 if (req != REQ_NONE)
923 add_keybinding(reqs[i].keymap, req, reqs[i].key);
924 }
925 }
927 /*
928 * User config file handling.
929 */
931 #define OPT_ERR_INFO \
932 OPT_ERR_(INTEGER_VALUE_OUT_OF_BOUND, "Integer value out of bound"), \
933 OPT_ERR_(INVALID_STEP_VALUE, "Invalid step value"), \
934 OPT_ERR_(NO_OPTION_VALUE, "No option value"), \
935 OPT_ERR_(NO_VALUE_ASSIGNED, "No value assigned"), \
936 OPT_ERR_(OBSOLETE_REQUEST_NAME, "Obsolete request name"), \
937 OPT_ERR_(OUT_OF_MEMORY, "Out of memory"), \
938 OPT_ERR_(TOO_MANY_OPTION_ARGUMENTS, "Too many option arguments"), \
939 OPT_ERR_(UNKNOWN_ATTRIBUTE, "Unknown attribute"), \
940 OPT_ERR_(UNKNOWN_COLOR, "Unknown color"), \
941 OPT_ERR_(UNKNOWN_COLOR_NAME, "Unknown color name"), \
942 OPT_ERR_(UNKNOWN_KEY, "Unknown key"), \
943 OPT_ERR_(UNKNOWN_KEY_MAP, "Unknown key map"), \
944 OPT_ERR_(UNKNOWN_OPTION_COMMAND, "Unknown option command"), \
945 OPT_ERR_(UNKNOWN_REQUEST_NAME, "Unknown request name"), \
946 OPT_ERR_(UNKNOWN_VARIABLE_NAME, "Unknown variable name"), \
947 OPT_ERR_(UNMATCHED_QUOTATION, "Unmatched quotation"), \
948 OPT_ERR_(WRONG_NUMBER_OF_ARGUMENTS, "Wrong number of arguments"),
950 enum option_code {
951 #define OPT_ERR_(name, msg) OPT_ERR_ ## name
952 OPT_ERR_INFO
953 #undef OPT_ERR_
954 OPT_OK
955 };
957 static const char *option_errors[] = {
958 #define OPT_ERR_(name, msg) msg
959 OPT_ERR_INFO
960 #undef OPT_ERR_
961 };
963 static const struct enum_map color_map[] = {
964 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
965 COLOR_MAP(DEFAULT),
966 COLOR_MAP(BLACK),
967 COLOR_MAP(BLUE),
968 COLOR_MAP(CYAN),
969 COLOR_MAP(GREEN),
970 COLOR_MAP(MAGENTA),
971 COLOR_MAP(RED),
972 COLOR_MAP(WHITE),
973 COLOR_MAP(YELLOW),
974 };
976 static const struct enum_map attr_map[] = {
977 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
978 ATTR_MAP(NORMAL),
979 ATTR_MAP(BLINK),
980 ATTR_MAP(BOLD),
981 ATTR_MAP(DIM),
982 ATTR_MAP(REVERSE),
983 ATTR_MAP(STANDOUT),
984 ATTR_MAP(UNDERLINE),
985 };
987 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
989 static enum option_code
990 parse_step(double *opt, const char *arg)
991 {
992 *opt = atoi(arg);
993 if (!strchr(arg, '%'))
994 return OPT_OK;
996 /* "Shift down" so 100% and 1 does not conflict. */
997 *opt = (*opt - 1) / 100;
998 if (*opt >= 1.0) {
999 *opt = 0.99;
1000 return OPT_ERR_INVALID_STEP_VALUE;
1001 }
1002 if (*opt < 0.0) {
1003 *opt = 1;
1004 return OPT_ERR_INVALID_STEP_VALUE;
1005 }
1006 return OPT_OK;
1007 }
1009 static enum option_code
1010 parse_int(int *opt, const char *arg, int min, int max)
1011 {
1012 int value = atoi(arg);
1014 if (min <= value && value <= max) {
1015 *opt = value;
1016 return OPT_OK;
1017 }
1019 return OPT_ERR_INTEGER_VALUE_OUT_OF_BOUND;
1020 }
1022 static bool
1023 set_color(int *color, const char *name)
1024 {
1025 if (map_enum(color, color_map, name))
1026 return TRUE;
1027 if (!prefixcmp(name, "color"))
1028 return parse_int(color, name + 5, 0, 255) == OK;
1029 return FALSE;
1030 }
1032 /* Wants: object fgcolor bgcolor [attribute] */
1033 static enum option_code
1034 option_color_command(int argc, const char *argv[])
1035 {
1036 struct line_info *info;
1038 if (argc < 3)
1039 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1041 info = get_line_info(argv[0]);
1042 if (!info) {
1043 static const struct enum_map obsolete[] = {
1044 ENUM_MAP("main-delim", LINE_DELIMITER),
1045 ENUM_MAP("main-date", LINE_DATE),
1046 ENUM_MAP("main-author", LINE_AUTHOR),
1047 };
1048 int index;
1050 if (!map_enum(&index, obsolete, argv[0]))
1051 return OPT_ERR_UNKNOWN_COLOR_NAME;
1052 info = &line_info[index];
1053 }
1055 if (!set_color(&info->fg, argv[1]) ||
1056 !set_color(&info->bg, argv[2]))
1057 return OPT_ERR_UNKNOWN_COLOR;
1059 info->attr = 0;
1060 while (argc-- > 3) {
1061 int attr;
1063 if (!set_attribute(&attr, argv[argc]))
1064 return OPT_ERR_UNKNOWN_ATTRIBUTE;
1065 info->attr |= attr;
1066 }
1068 return OPT_OK;
1069 }
1071 static enum option_code
1072 parse_bool(bool *opt, const char *arg)
1073 {
1074 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1075 ? TRUE : FALSE;
1076 return OPT_OK;
1077 }
1079 static enum option_code
1080 parse_enum_do(unsigned int *opt, const char *arg,
1081 const struct enum_map *map, size_t map_size)
1082 {
1083 bool is_true;
1085 assert(map_size > 1);
1087 if (map_enum_do(map, map_size, (int *) opt, arg))
1088 return OPT_OK;
1090 parse_bool(&is_true, arg);
1091 *opt = is_true ? map[1].value : map[0].value;
1092 return OPT_OK;
1093 }
1095 #define parse_enum(opt, arg, map) \
1096 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1098 static enum option_code
1099 parse_string(char *opt, const char *arg, size_t optsize)
1100 {
1101 int arglen = strlen(arg);
1103 switch (arg[0]) {
1104 case '\"':
1105 case '\'':
1106 if (arglen == 1 || arg[arglen - 1] != arg[0])
1107 return OPT_ERR_UNMATCHED_QUOTATION;
1108 arg += 1; arglen -= 2;
1109 default:
1110 string_ncopy_do(opt, optsize, arg, arglen);
1111 return OPT_OK;
1112 }
1113 }
1115 static enum option_code
1116 parse_args(const char ***args, const char *argv[])
1117 {
1118 if (*args == NULL && !argv_copy(args, argv))
1119 return OPT_ERR_OUT_OF_MEMORY;
1120 return OPT_OK;
1121 }
1123 /* Wants: name = value */
1124 static enum option_code
1125 option_set_command(int argc, const char *argv[])
1126 {
1127 if (argc < 3)
1128 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1130 if (strcmp(argv[1], "="))
1131 return OPT_ERR_NO_VALUE_ASSIGNED;
1133 if (!strcmp(argv[0], "blame-options"))
1134 return parse_args(&opt_blame_argv, argv + 2);
1136 if (argc != 3)
1137 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1139 if (!strcmp(argv[0], "show-author"))
1140 return parse_enum(&opt_author, argv[2], author_map);
1142 if (!strcmp(argv[0], "show-date"))
1143 return parse_enum(&opt_date, argv[2], date_map);
1145 if (!strcmp(argv[0], "show-rev-graph"))
1146 return parse_bool(&opt_rev_graph, argv[2]);
1148 if (!strcmp(argv[0], "show-refs"))
1149 return parse_bool(&opt_show_refs, argv[2]);
1151 if (!strcmp(argv[0], "show-line-numbers"))
1152 return parse_bool(&opt_line_number, argv[2]);
1154 if (!strcmp(argv[0], "line-graphics"))
1155 return parse_enum(&opt_line_graphics, argv[2], graphic_map);
1157 if (!strcmp(argv[0], "line-number-interval"))
1158 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1160 if (!strcmp(argv[0], "author-width"))
1161 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1163 if (!strcmp(argv[0], "horizontal-scroll"))
1164 return parse_step(&opt_hscroll, argv[2]);
1166 if (!strcmp(argv[0], "split-view-height"))
1167 return parse_step(&opt_scale_split_view, argv[2]);
1169 if (!strcmp(argv[0], "tab-size"))
1170 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1172 if (!strcmp(argv[0], "commit-encoding"))
1173 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1175 if (!strcmp(argv[0], "status-untracked-dirs"))
1176 return parse_bool(&opt_untracked_dirs_content, argv[2]);
1178 return OPT_ERR_UNKNOWN_VARIABLE_NAME;
1179 }
1181 /* Wants: mode request key */
1182 static enum option_code
1183 option_bind_command(int argc, const char *argv[])
1184 {
1185 enum request request;
1186 int keymap = -1;
1187 int key;
1189 if (argc < 3)
1190 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1192 if (!set_keymap(&keymap, argv[0]))
1193 return OPT_ERR_UNKNOWN_KEY_MAP;
1195 key = get_key_value(argv[1]);
1196 if (key == ERR)
1197 return OPT_ERR_UNKNOWN_KEY;
1199 request = get_request(argv[2]);
1200 if (request == REQ_UNKNOWN) {
1201 static const struct enum_map obsolete[] = {
1202 ENUM_MAP("cherry-pick", REQ_NONE),
1203 ENUM_MAP("screen-resize", REQ_NONE),
1204 ENUM_MAP("tree-parent", REQ_PARENT),
1205 };
1206 int alias;
1208 if (map_enum(&alias, obsolete, argv[2])) {
1209 if (alias != REQ_NONE)
1210 add_keybinding(keymap, alias, key);
1211 return OPT_ERR_OBSOLETE_REQUEST_NAME;
1212 }
1213 }
1214 if (request == REQ_UNKNOWN && *argv[2]++ == '!')
1215 request = add_run_request(keymap, key, argv + 2);
1216 if (request == REQ_UNKNOWN)
1217 return OPT_ERR_UNKNOWN_REQUEST_NAME;
1219 add_keybinding(keymap, request, key);
1221 return OPT_OK;
1222 }
1224 static enum option_code
1225 set_option(const char *opt, char *value)
1226 {
1227 const char *argv[SIZEOF_ARG];
1228 int argc = 0;
1230 if (!argv_from_string(argv, &argc, value))
1231 return OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
1233 if (!strcmp(opt, "color"))
1234 return option_color_command(argc, argv);
1236 if (!strcmp(opt, "set"))
1237 return option_set_command(argc, argv);
1239 if (!strcmp(opt, "bind"))
1240 return option_bind_command(argc, argv);
1242 return OPT_ERR_UNKNOWN_OPTION_COMMAND;
1243 }
1245 struct config_state {
1246 int lineno;
1247 bool errors;
1248 };
1250 static int
1251 read_option(char *opt, size_t optlen, char *value, size_t valuelen, void *data)
1252 {
1253 struct config_state *config = data;
1254 enum option_code status = OPT_ERR_NO_OPTION_VALUE;
1256 config->lineno++;
1258 /* Check for comment markers, since read_properties() will
1259 * only ensure opt and value are split at first " \t". */
1260 optlen = strcspn(opt, "#");
1261 if (optlen == 0)
1262 return OK;
1264 if (opt[optlen] == 0) {
1265 /* Look for comment endings in the value. */
1266 size_t len = strcspn(value, "#");
1268 if (len < valuelen) {
1269 valuelen = len;
1270 value[valuelen] = 0;
1271 }
1273 status = set_option(opt, value);
1274 }
1276 if (status != OPT_OK) {
1277 warn("Error on line %d, near '%.*s': %s",
1278 config->lineno, (int) optlen, opt, option_errors[status]);
1279 config->errors = TRUE;
1280 }
1282 /* Always keep going if errors are encountered. */
1283 return OK;
1284 }
1286 static void
1287 load_option_file(const char *path)
1288 {
1289 struct config_state config = { 0, FALSE };
1290 struct io io;
1292 /* It's OK that the file doesn't exist. */
1293 if (!io_open(&io, "%s", path))
1294 return;
1296 if (io_load(&io, " \t", read_option, &config) == ERR ||
1297 config.errors == TRUE)
1298 warn("Errors while loading %s.", path);
1299 }
1301 static int
1302 load_options(void)
1303 {
1304 const char *home = getenv("HOME");
1305 const char *tigrc_user = getenv("TIGRC_USER");
1306 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1307 const char *tig_diff_opts = getenv("TIG_DIFF_OPTS");
1308 char buf[SIZEOF_STR];
1310 if (!tigrc_system)
1311 tigrc_system = SYSCONFDIR "/tigrc";
1312 load_option_file(tigrc_system);
1314 if (!tigrc_user) {
1315 if (!home || !string_format(buf, "%s/.tigrc", home))
1316 return ERR;
1317 tigrc_user = buf;
1318 }
1319 load_option_file(tigrc_user);
1321 /* Add _after_ loading config files to avoid adding run requests
1322 * that conflict with keybindings. */
1323 add_builtin_run_requests();
1325 if (!opt_diff_argv && tig_diff_opts && *tig_diff_opts) {
1326 static const char *diff_opts[SIZEOF_ARG] = { NULL };
1327 int argc = 0;
1329 if (!string_format(buf, "%s", tig_diff_opts) ||
1330 !argv_from_string(diff_opts, &argc, buf))
1331 die("TIG_DIFF_OPTS contains too many arguments");
1332 else if (!argv_copy(&opt_diff_argv, diff_opts))
1333 die("Failed to format TIG_DIFF_OPTS arguments");
1334 }
1336 return OK;
1337 }
1340 /*
1341 * The viewer
1342 */
1344 struct view;
1345 struct view_ops;
1347 /* The display array of active views and the index of the current view. */
1348 static struct view *display[2];
1349 static WINDOW *display_win[2];
1350 static WINDOW *display_title[2];
1351 static unsigned int current_view;
1353 #define foreach_displayed_view(view, i) \
1354 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1356 #define displayed_views() (display[1] != NULL ? 2 : 1)
1358 /* Current head and commit ID */
1359 static char ref_blob[SIZEOF_REF] = "";
1360 static char ref_commit[SIZEOF_REF] = "HEAD";
1361 static char ref_head[SIZEOF_REF] = "HEAD";
1362 static char ref_branch[SIZEOF_REF] = "";
1364 enum view_type {
1365 VIEW_MAIN,
1366 VIEW_DIFF,
1367 VIEW_LOG,
1368 VIEW_TREE,
1369 VIEW_BLOB,
1370 VIEW_BLAME,
1371 VIEW_BRANCH,
1372 VIEW_HELP,
1373 VIEW_PAGER,
1374 VIEW_STATUS,
1375 VIEW_STAGE,
1376 };
1378 struct view {
1379 enum view_type type; /* View type */
1380 const char *name; /* View name */
1381 const char *id; /* Points to either of ref_{head,commit,blob} */
1383 struct view_ops *ops; /* View operations */
1385 enum keymap keymap; /* What keymap does this view have */
1386 bool git_dir; /* Whether the view requires a git directory. */
1388 char ref[SIZEOF_REF]; /* Hovered commit reference */
1389 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1391 int height, width; /* The width and height of the main window */
1392 WINDOW *win; /* The main window */
1394 /* Navigation */
1395 unsigned long offset; /* Offset of the window top */
1396 unsigned long yoffset; /* Offset from the window side. */
1397 unsigned long lineno; /* Current line number */
1398 unsigned long p_offset; /* Previous offset of the window top */
1399 unsigned long p_yoffset;/* Previous offset from the window side */
1400 unsigned long p_lineno; /* Previous current line number */
1401 bool p_restore; /* Should the previous position be restored. */
1403 /* Searching */
1404 char grep[SIZEOF_STR]; /* Search string */
1405 regex_t *regex; /* Pre-compiled regexp */
1407 /* If non-NULL, points to the view that opened this view. If this view
1408 * is closed tig will switch back to the parent view. */
1409 struct view *parent;
1410 struct view *prev;
1412 /* Buffering */
1413 size_t lines; /* Total number of lines */
1414 struct line *line; /* Line index */
1415 unsigned int digits; /* Number of digits in the lines member. */
1417 /* Drawing */
1418 struct line *curline; /* Line currently being drawn. */
1419 enum line_type curtype; /* Attribute currently used for drawing. */
1420 unsigned long col; /* Column when drawing. */
1421 bool has_scrolled; /* View was scrolled. */
1423 /* Loading */
1424 const char **argv; /* Shell command arguments. */
1425 const char *dir; /* Directory from which to execute. */
1426 struct io io;
1427 struct io *pipe;
1428 time_t start_time;
1429 time_t update_secs;
1430 };
1432 enum open_flags {
1433 OPEN_DEFAULT = 0, /* Use default view switching. */
1434 OPEN_SPLIT = 1, /* Split current view. */
1435 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1436 OPEN_REFRESH = 16, /* Refresh view using previous command. */
1437 OPEN_PREPARED = 32, /* Open already prepared command. */
1438 };
1440 struct view_ops {
1441 /* What type of content being displayed. Used in the title bar. */
1442 const char *type;
1443 /* Open and reads in all view content. */
1444 bool (*open)(struct view *view, enum open_flags flags);
1445 /* Read one line; updates view->line. */
1446 bool (*read)(struct view *view, char *data);
1447 /* Draw one line; @lineno must be < view->height. */
1448 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1449 /* Depending on view handle a special requests. */
1450 enum request (*request)(struct view *view, enum request request, struct line *line);
1451 /* Search for regexp in a line. */
1452 bool (*grep)(struct view *view, struct line *line);
1453 /* Select line */
1454 void (*select)(struct view *view, struct line *line);
1455 };
1457 static struct view_ops blame_ops;
1458 static struct view_ops blob_ops;
1459 static struct view_ops diff_ops;
1460 static struct view_ops help_ops;
1461 static struct view_ops log_ops;
1462 static struct view_ops main_ops;
1463 static struct view_ops pager_ops;
1464 static struct view_ops stage_ops;
1465 static struct view_ops status_ops;
1466 static struct view_ops tree_ops;
1467 static struct view_ops branch_ops;
1469 #define VIEW_STR(type, name, ref, ops, map, git) \
1470 { type, name, ref, ops, map, git }
1472 #define VIEW_(id, name, ops, git, ref) \
1473 VIEW_STR(VIEW_##id, name, ref, ops, KEYMAP_##id, git)
1475 static struct view views[] = {
1476 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1477 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1478 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1479 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1480 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1481 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1482 VIEW_(BRANCH, "branch", &branch_ops, TRUE, ref_head),
1483 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1484 VIEW_(PAGER, "pager", &pager_ops, FALSE, ""),
1485 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1486 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1487 };
1489 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1491 #define foreach_view(view, i) \
1492 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1494 #define view_is_displayed(view) \
1495 (view == display[0] || view == display[1])
1497 static enum request
1498 view_request(struct view *view, enum request request)
1499 {
1500 if (!view || !view->lines)
1501 return request;
1502 return view->ops->request(view, request, &view->line[view->lineno]);
1503 }
1506 /*
1507 * View drawing.
1508 */
1510 static inline void
1511 set_view_attr(struct view *view, enum line_type type)
1512 {
1513 if (!view->curline->selected && view->curtype != type) {
1514 (void) wattrset(view->win, get_line_attr(type));
1515 wchgat(view->win, -1, 0, type, NULL);
1516 view->curtype = type;
1517 }
1518 }
1520 #define VIEW_MAX_LEN(view) ((view)->width + (view)->yoffset - (view)->col)
1522 static bool
1523 draw_chars(struct view *view, enum line_type type, const char *string,
1524 int max_len, bool use_tilde)
1525 {
1526 static char out_buffer[BUFSIZ * 2];
1527 int len = 0;
1528 int col = 0;
1529 int trimmed = FALSE;
1530 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1532 if (max_len <= 0)
1533 return VIEW_MAX_LEN(view) <= 0;
1535 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1537 set_view_attr(view, type);
1538 if (len > 0) {
1539 if (opt_iconv_out != ICONV_NONE) {
1540 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
1541 size_t inlen = len + 1;
1543 char *outbuf = out_buffer;
1544 size_t outlen = sizeof(out_buffer);
1546 size_t ret;
1548 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1549 if (ret != (size_t) -1) {
1550 string = out_buffer;
1551 len = sizeof(out_buffer) - outlen;
1552 }
1553 }
1555 waddnstr(view->win, string, len);
1557 if (trimmed && use_tilde) {
1558 set_view_attr(view, LINE_DELIMITER);
1559 waddch(view->win, '~');
1560 col++;
1561 }
1562 }
1564 view->col += col;
1565 return VIEW_MAX_LEN(view) <= 0;
1566 }
1568 static bool
1569 draw_space(struct view *view, enum line_type type, int max, int spaces)
1570 {
1571 static char space[] = " ";
1573 spaces = MIN(max, spaces);
1575 while (spaces > 0) {
1576 int len = MIN(spaces, sizeof(space) - 1);
1578 if (draw_chars(view, type, space, len, FALSE))
1579 return TRUE;
1580 spaces -= len;
1581 }
1583 return VIEW_MAX_LEN(view) <= 0;
1584 }
1586 static bool
1587 draw_text(struct view *view, enum line_type type, const char *string)
1588 {
1589 char text[SIZEOF_STR];
1591 do {
1592 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1594 if (draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE))
1595 return TRUE;
1596 string += pos;
1597 } while (*string);
1599 return VIEW_MAX_LEN(view) <= 0;
1600 }
1602 static bool
1603 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
1604 {
1605 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1606 int max = VIEW_MAX_LEN(view);
1607 int i;
1609 if (max < size)
1610 size = max;
1612 set_view_attr(view, type);
1613 /* Using waddch() instead of waddnstr() ensures that
1614 * they'll be rendered correctly for the cursor line. */
1615 for (i = skip; i < size; i++)
1616 waddch(view->win, graphic[i]);
1618 view->col += size;
1619 if (separator) {
1620 if (size < max && skip <= size)
1621 waddch(view->win, ' ');
1622 view->col++;
1623 }
1625 return VIEW_MAX_LEN(view) <= 0;
1626 }
1628 static bool
1629 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1630 {
1631 int max = MIN(VIEW_MAX_LEN(view), len);
1632 int col = view->col;
1634 if (!text)
1635 return draw_space(view, type, max, max);
1637 return draw_chars(view, type, text, max - 1, trim)
1638 || draw_space(view, LINE_DEFAULT, max - (view->col - col), max);
1639 }
1641 static bool
1642 draw_date(struct view *view, struct time *time)
1643 {
1644 const char *date = mkdate(time, opt_date);
1645 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
1647 if (opt_date == DATE_NO)
1648 return FALSE;
1650 return draw_field(view, LINE_DATE, date, cols, FALSE);
1651 }
1653 static bool
1654 draw_author(struct view *view, const char *author)
1655 {
1656 bool trim = opt_author_cols == 0 || opt_author_cols > 5;
1657 bool abbreviate = opt_author == AUTHOR_ABBREVIATED || !trim;
1659 if (opt_author == AUTHOR_NO)
1660 return FALSE;
1662 if (abbreviate && author)
1663 author = get_author_initials(author);
1665 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
1666 }
1668 static bool
1669 draw_mode(struct view *view, mode_t mode)
1670 {
1671 const char *str;
1673 if (S_ISDIR(mode))
1674 str = "drwxr-xr-x";
1675 else if (S_ISLNK(mode))
1676 str = "lrwxrwxrwx";
1677 else if (S_ISGITLINK(mode))
1678 str = "m---------";
1679 else if (S_ISREG(mode) && mode & S_IXUSR)
1680 str = "-rwxr-xr-x";
1681 else if (S_ISREG(mode))
1682 str = "-rw-r--r--";
1683 else
1684 str = "----------";
1686 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
1687 }
1689 static bool
1690 draw_lineno(struct view *view, unsigned int lineno)
1691 {
1692 char number[10];
1693 int digits3 = view->digits < 3 ? 3 : view->digits;
1694 int max = MIN(VIEW_MAX_LEN(view), digits3);
1695 char *text = NULL;
1696 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
1698 lineno += view->offset + 1;
1699 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1700 static char fmt[] = "%1ld";
1702 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
1703 if (string_format(number, fmt, lineno))
1704 text = number;
1705 }
1706 if (text)
1707 draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
1708 else
1709 draw_space(view, LINE_LINE_NUMBER, max, digits3);
1710 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
1711 }
1713 static bool
1714 draw_view_line(struct view *view, unsigned int lineno)
1715 {
1716 struct line *line;
1717 bool selected = (view->offset + lineno == view->lineno);
1719 assert(view_is_displayed(view));
1721 if (view->offset + lineno >= view->lines)
1722 return FALSE;
1724 line = &view->line[view->offset + lineno];
1726 wmove(view->win, lineno, 0);
1727 if (line->cleareol)
1728 wclrtoeol(view->win);
1729 view->col = 0;
1730 view->curline = line;
1731 view->curtype = LINE_NONE;
1732 line->selected = FALSE;
1733 line->dirty = line->cleareol = 0;
1735 if (selected) {
1736 set_view_attr(view, LINE_CURSOR);
1737 line->selected = TRUE;
1738 view->ops->select(view, line);
1739 }
1741 return view->ops->draw(view, line, lineno);
1742 }
1744 static void
1745 redraw_view_dirty(struct view *view)
1746 {
1747 bool dirty = FALSE;
1748 int lineno;
1750 for (lineno = 0; lineno < view->height; lineno++) {
1751 if (view->offset + lineno >= view->lines)
1752 break;
1753 if (!view->line[view->offset + lineno].dirty)
1754 continue;
1755 dirty = TRUE;
1756 if (!draw_view_line(view, lineno))
1757 break;
1758 }
1760 if (!dirty)
1761 return;
1762 wnoutrefresh(view->win);
1763 }
1765 static void
1766 redraw_view_from(struct view *view, int lineno)
1767 {
1768 assert(0 <= lineno && lineno < view->height);
1770 for (; lineno < view->height; lineno++) {
1771 if (!draw_view_line(view, lineno))
1772 break;
1773 }
1775 wnoutrefresh(view->win);
1776 }
1778 static void
1779 redraw_view(struct view *view)
1780 {
1781 werase(view->win);
1782 redraw_view_from(view, 0);
1783 }
1786 static void
1787 update_view_title(struct view *view)
1788 {
1789 char buf[SIZEOF_STR];
1790 char state[SIZEOF_STR];
1791 size_t bufpos = 0, statelen = 0;
1792 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
1794 assert(view_is_displayed(view));
1796 if (view->type != VIEW_STATUS && view->lines) {
1797 unsigned int view_lines = view->offset + view->height;
1798 unsigned int lines = view->lines
1799 ? MIN(view_lines, view->lines) * 100 / view->lines
1800 : 0;
1802 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
1803 view->ops->type,
1804 view->lineno + 1,
1805 view->lines,
1806 lines);
1808 }
1810 if (view->pipe) {
1811 time_t secs = time(NULL) - view->start_time;
1813 /* Three git seconds are a long time ... */
1814 if (secs > 2)
1815 string_format_from(state, &statelen, " loading %lds", secs);
1816 }
1818 string_format_from(buf, &bufpos, "[%s]", view->name);
1819 if (*view->ref && bufpos < view->width) {
1820 size_t refsize = strlen(view->ref);
1821 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1823 if (minsize < view->width)
1824 refsize = view->width - minsize + 7;
1825 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1826 }
1828 if (statelen && bufpos < view->width) {
1829 string_format_from(buf, &bufpos, "%s", state);
1830 }
1832 if (view == display[current_view])
1833 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
1834 else
1835 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
1837 mvwaddnstr(window, 0, 0, buf, bufpos);
1838 wclrtoeol(window);
1839 wnoutrefresh(window);
1840 }
1842 static int
1843 apply_step(double step, int value)
1844 {
1845 if (step >= 1)
1846 return (int) step;
1847 value *= step + 0.01;
1848 return value ? value : 1;
1849 }
1851 static void
1852 resize_display(void)
1853 {
1854 int offset, i;
1855 struct view *base = display[0];
1856 struct view *view = display[1] ? display[1] : display[0];
1858 /* Setup window dimensions */
1860 getmaxyx(stdscr, base->height, base->width);
1862 /* Make room for the status window. */
1863 base->height -= 1;
1865 if (view != base) {
1866 /* Horizontal split. */
1867 view->width = base->width;
1868 view->height = apply_step(opt_scale_split_view, base->height);
1869 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
1870 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
1871 base->height -= view->height;
1873 /* Make room for the title bar. */
1874 view->height -= 1;
1875 }
1877 /* Make room for the title bar. */
1878 base->height -= 1;
1880 offset = 0;
1882 foreach_displayed_view (view, i) {
1883 if (!display_win[i]) {
1884 display_win[i] = newwin(view->height, view->width, offset, 0);
1885 if (!display_win[i])
1886 die("Failed to create %s view", view->name);
1888 scrollok(display_win[i], FALSE);
1890 display_title[i] = newwin(1, view->width, offset + view->height, 0);
1891 if (!display_title[i])
1892 die("Failed to create title window");
1894 } else {
1895 wresize(display_win[i], view->height, view->width);
1896 mvwin(display_win[i], offset, 0);
1897 mvwin(display_title[i], offset + view->height, 0);
1898 }
1900 view->win = display_win[i];
1902 offset += view->height + 1;
1903 }
1904 }
1906 static void
1907 redraw_display(bool clear)
1908 {
1909 struct view *view;
1910 int i;
1912 foreach_displayed_view (view, i) {
1913 if (clear)
1914 wclear(view->win);
1915 redraw_view(view);
1916 update_view_title(view);
1917 }
1918 }
1921 /*
1922 * Option management
1923 */
1925 #define TOGGLE_MENU \
1926 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
1927 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
1928 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
1929 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
1930 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
1931 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
1933 static void
1934 toggle_option(enum request request)
1935 {
1936 const struct {
1937 enum request request;
1938 const struct enum_map *map;
1939 size_t map_size;
1940 } data[] = {
1941 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
1942 TOGGLE_MENU
1943 #undef TOGGLE_
1944 };
1945 const struct menu_item menu[] = {
1946 #define TOGGLE_(id, key, help, value, map) { key, help, value },
1947 TOGGLE_MENU
1948 #undef TOGGLE_
1949 { 0 }
1950 };
1951 int i = 0;
1953 if (request == REQ_OPTIONS) {
1954 if (!prompt_menu("Toggle option", menu, &i))
1955 return;
1956 } else {
1957 while (i < ARRAY_SIZE(data) && data[i].request != request)
1958 i++;
1959 if (i >= ARRAY_SIZE(data))
1960 die("Invalid request (%d)", request);
1961 }
1963 if (data[i].map != NULL) {
1964 unsigned int *opt = menu[i].data;
1966 *opt = (*opt + 1) % data[i].map_size;
1967 redraw_display(FALSE);
1968 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
1970 } else {
1971 bool *option = menu[i].data;
1973 *option = !*option;
1974 redraw_display(FALSE);
1975 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
1976 }
1977 }
1979 static void
1980 maximize_view(struct view *view)
1981 {
1982 memset(display, 0, sizeof(display));
1983 current_view = 0;
1984 display[current_view] = view;
1985 resize_display();
1986 redraw_display(FALSE);
1987 report("");
1988 }
1991 /*
1992 * Navigation
1993 */
1995 static bool
1996 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
1997 {
1998 if (lineno >= view->lines)
1999 lineno = view->lines > 0 ? view->lines - 1 : 0;
2001 if (offset > lineno || offset + view->height <= lineno) {
2002 unsigned long half = view->height / 2;
2004 if (lineno > half)
2005 offset = lineno - half;
2006 else
2007 offset = 0;
2008 }
2010 if (offset != view->offset || lineno != view->lineno) {
2011 view->offset = offset;
2012 view->lineno = lineno;
2013 return TRUE;
2014 }
2016 return FALSE;
2017 }
2019 /* Scrolling backend */
2020 static void
2021 do_scroll_view(struct view *view, int lines)
2022 {
2023 bool redraw_current_line = FALSE;
2025 /* The rendering expects the new offset. */
2026 view->offset += lines;
2028 assert(0 <= view->offset && view->offset < view->lines);
2029 assert(lines);
2031 /* Move current line into the view. */
2032 if (view->lineno < view->offset) {
2033 view->lineno = view->offset;
2034 redraw_current_line = TRUE;
2035 } else if (view->lineno >= view->offset + view->height) {
2036 view->lineno = view->offset + view->height - 1;
2037 redraw_current_line = TRUE;
2038 }
2040 assert(view->offset <= view->lineno && view->lineno < view->lines);
2042 /* Redraw the whole screen if scrolling is pointless. */
2043 if (view->height < ABS(lines)) {
2044 redraw_view(view);
2046 } else {
2047 int line = lines > 0 ? view->height - lines : 0;
2048 int end = line + ABS(lines);
2050 scrollok(view->win, TRUE);
2051 wscrl(view->win, lines);
2052 scrollok(view->win, FALSE);
2054 while (line < end && draw_view_line(view, line))
2055 line++;
2057 if (redraw_current_line)
2058 draw_view_line(view, view->lineno - view->offset);
2059 wnoutrefresh(view->win);
2060 }
2062 view->has_scrolled = TRUE;
2063 report("");
2064 }
2066 /* Scroll frontend */
2067 static void
2068 scroll_view(struct view *view, enum request request)
2069 {
2070 int lines = 1;
2072 assert(view_is_displayed(view));
2074 switch (request) {
2075 case REQ_SCROLL_FIRST_COL:
2076 view->yoffset = 0;
2077 redraw_view_from(view, 0);
2078 report("");
2079 return;
2080 case REQ_SCROLL_LEFT:
2081 if (view->yoffset == 0) {
2082 report("Cannot scroll beyond the first column");
2083 return;
2084 }
2085 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2086 view->yoffset = 0;
2087 else
2088 view->yoffset -= apply_step(opt_hscroll, view->width);
2089 redraw_view_from(view, 0);
2090 report("");
2091 return;
2092 case REQ_SCROLL_RIGHT:
2093 view->yoffset += apply_step(opt_hscroll, view->width);
2094 redraw_view(view);
2095 report("");
2096 return;
2097 case REQ_SCROLL_PAGE_DOWN:
2098 lines = view->height;
2099 case REQ_SCROLL_LINE_DOWN:
2100 if (view->offset + lines > view->lines)
2101 lines = view->lines - view->offset;
2103 if (lines == 0 || view->offset + view->height >= view->lines) {
2104 report("Cannot scroll beyond the last line");
2105 return;
2106 }
2107 break;
2109 case REQ_SCROLL_PAGE_UP:
2110 lines = view->height;
2111 case REQ_SCROLL_LINE_UP:
2112 if (lines > view->offset)
2113 lines = view->offset;
2115 if (lines == 0) {
2116 report("Cannot scroll beyond the first line");
2117 return;
2118 }
2120 lines = -lines;
2121 break;
2123 default:
2124 die("request %d not handled in switch", request);
2125 }
2127 do_scroll_view(view, lines);
2128 }
2130 /* Cursor moving */
2131 static void
2132 move_view(struct view *view, enum request request)
2133 {
2134 int scroll_steps = 0;
2135 int steps;
2137 switch (request) {
2138 case REQ_MOVE_FIRST_LINE:
2139 steps = -view->lineno;
2140 break;
2142 case REQ_MOVE_LAST_LINE:
2143 steps = view->lines - view->lineno - 1;
2144 break;
2146 case REQ_MOVE_PAGE_UP:
2147 steps = view->height > view->lineno
2148 ? -view->lineno : -view->height;
2149 break;
2151 case REQ_MOVE_PAGE_DOWN:
2152 steps = view->lineno + view->height >= view->lines
2153 ? view->lines - view->lineno - 1 : view->height;
2154 break;
2156 case REQ_MOVE_UP:
2157 steps = -1;
2158 break;
2160 case REQ_MOVE_DOWN:
2161 steps = 1;
2162 break;
2164 default:
2165 die("request %d not handled in switch", request);
2166 }
2168 if (steps <= 0 && view->lineno == 0) {
2169 report("Cannot move beyond the first line");
2170 return;
2172 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2173 report("Cannot move beyond the last line");
2174 return;
2175 }
2177 /* Move the current line */
2178 view->lineno += steps;
2179 assert(0 <= view->lineno && view->lineno < view->lines);
2181 /* Check whether the view needs to be scrolled */
2182 if (view->lineno < view->offset ||
2183 view->lineno >= view->offset + view->height) {
2184 scroll_steps = steps;
2185 if (steps < 0 && -steps > view->offset) {
2186 scroll_steps = -view->offset;
2188 } else if (steps > 0) {
2189 if (view->lineno == view->lines - 1 &&
2190 view->lines > view->height) {
2191 scroll_steps = view->lines - view->offset - 1;
2192 if (scroll_steps >= view->height)
2193 scroll_steps -= view->height - 1;
2194 }
2195 }
2196 }
2198 if (!view_is_displayed(view)) {
2199 view->offset += scroll_steps;
2200 assert(0 <= view->offset && view->offset < view->lines);
2201 view->ops->select(view, &view->line[view->lineno]);
2202 return;
2203 }
2205 /* Repaint the old "current" line if we be scrolling */
2206 if (ABS(steps) < view->height)
2207 draw_view_line(view, view->lineno - steps - view->offset);
2209 if (scroll_steps) {
2210 do_scroll_view(view, scroll_steps);
2211 return;
2212 }
2214 /* Draw the current line */
2215 draw_view_line(view, view->lineno - view->offset);
2217 wnoutrefresh(view->win);
2218 report("");
2219 }
2222 /*
2223 * Searching
2224 */
2226 static void search_view(struct view *view, enum request request);
2228 static bool
2229 grep_text(struct view *view, const char *text[])
2230 {
2231 regmatch_t pmatch;
2232 size_t i;
2234 for (i = 0; text[i]; i++)
2235 if (*text[i] &&
2236 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2237 return TRUE;
2238 return FALSE;
2239 }
2241 static void
2242 select_view_line(struct view *view, unsigned long lineno)
2243 {
2244 unsigned long old_lineno = view->lineno;
2245 unsigned long old_offset = view->offset;
2247 if (goto_view_line(view, view->offset, lineno)) {
2248 if (view_is_displayed(view)) {
2249 if (old_offset != view->offset) {
2250 redraw_view(view);
2251 } else {
2252 draw_view_line(view, old_lineno - view->offset);
2253 draw_view_line(view, view->lineno - view->offset);
2254 wnoutrefresh(view->win);
2255 }
2256 } else {
2257 view->ops->select(view, &view->line[view->lineno]);
2258 }
2259 }
2260 }
2262 static void
2263 find_next(struct view *view, enum request request)
2264 {
2265 unsigned long lineno = view->lineno;
2266 int direction;
2268 if (!*view->grep) {
2269 if (!*opt_search)
2270 report("No previous search");
2271 else
2272 search_view(view, request);
2273 return;
2274 }
2276 switch (request) {
2277 case REQ_SEARCH:
2278 case REQ_FIND_NEXT:
2279 direction = 1;
2280 break;
2282 case REQ_SEARCH_BACK:
2283 case REQ_FIND_PREV:
2284 direction = -1;
2285 break;
2287 default:
2288 return;
2289 }
2291 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2292 lineno += direction;
2294 /* Note, lineno is unsigned long so will wrap around in which case it
2295 * will become bigger than view->lines. */
2296 for (; lineno < view->lines; lineno += direction) {
2297 if (view->ops->grep(view, &view->line[lineno])) {
2298 select_view_line(view, lineno);
2299 report("Line %ld matches '%s'", lineno + 1, view->grep);
2300 return;
2301 }
2302 }
2304 report("No match found for '%s'", view->grep);
2305 }
2307 static void
2308 search_view(struct view *view, enum request request)
2309 {
2310 int regex_err;
2312 if (view->regex) {
2313 regfree(view->regex);
2314 *view->grep = 0;
2315 } else {
2316 view->regex = calloc(1, sizeof(*view->regex));
2317 if (!view->regex)
2318 return;
2319 }
2321 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2322 if (regex_err != 0) {
2323 char buf[SIZEOF_STR] = "unknown error";
2325 regerror(regex_err, view->regex, buf, sizeof(buf));
2326 report("Search failed: %s", buf);
2327 return;
2328 }
2330 string_copy(view->grep, opt_search);
2332 find_next(view, request);
2333 }
2335 /*
2336 * Incremental updating
2337 */
2339 static void
2340 reset_view(struct view *view)
2341 {
2342 int i;
2344 for (i = 0; i < view->lines; i++)
2345 free(view->line[i].data);
2346 free(view->line);
2348 view->p_offset = view->offset;
2349 view->p_yoffset = view->yoffset;
2350 view->p_lineno = view->lineno;
2352 view->line = NULL;
2353 view->offset = 0;
2354 view->yoffset = 0;
2355 view->lines = 0;
2356 view->lineno = 0;
2357 view->vid[0] = 0;
2358 view->update_secs = 0;
2359 }
2361 static const char *
2362 format_arg(const char *name)
2363 {
2364 static struct {
2365 const char *name;
2366 size_t namelen;
2367 const char *value;
2368 const char *value_if_empty;
2369 } vars[] = {
2370 #define FORMAT_VAR(name, value, value_if_empty) \
2371 { name, STRING_SIZE(name), value, value_if_empty }
2372 FORMAT_VAR("%(directory)", opt_path, "."),
2373 FORMAT_VAR("%(file)", opt_file, ""),
2374 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2375 FORMAT_VAR("%(head)", ref_head, ""),
2376 FORMAT_VAR("%(commit)", ref_commit, ""),
2377 FORMAT_VAR("%(blob)", ref_blob, ""),
2378 FORMAT_VAR("%(branch)", ref_branch, ""),
2379 };
2380 int i;
2382 for (i = 0; i < ARRAY_SIZE(vars); i++)
2383 if (!strncmp(name, vars[i].name, vars[i].namelen))
2384 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2386 report("Unknown replacement: `%s`", name);
2387 return NULL;
2388 }
2390 static bool
2391 format_argv(const char ***dst_argv, const char *src_argv[], bool replace, bool first)
2392 {
2393 char buf[SIZEOF_STR];
2394 int argc;
2396 argv_free(*dst_argv);
2398 for (argc = 0; src_argv[argc]; argc++) {
2399 const char *arg = src_argv[argc];
2400 size_t bufpos = 0;
2402 if (!strcmp(arg, "%(fileargs)")) {
2403 if (!argv_append_array(dst_argv, opt_file_argv))
2404 break;
2405 continue;
2407 } else if (!strcmp(arg, "%(diffargs)")) {
2408 if (!argv_append_array(dst_argv, opt_diff_argv))
2409 break;
2410 continue;
2412 } else if (!strcmp(arg, "%(blameargs)")) {
2413 if (!argv_append_array(dst_argv, opt_blame_argv))
2414 break;
2415 continue;
2417 } else if (!strcmp(arg, "%(revargs)") ||
2418 (first && !strcmp(arg, "%(commit)"))) {
2419 if (!argv_append_array(dst_argv, opt_rev_argv))
2420 break;
2421 continue;
2422 }
2424 while (arg) {
2425 char *next = strstr(arg, "%(");
2426 int len = next - arg;
2427 const char *value;
2429 if (!next || !replace) {
2430 len = strlen(arg);
2431 value = "";
2433 } else {
2434 value = format_arg(next);
2436 if (!value) {
2437 return FALSE;
2438 }
2439 }
2441 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2442 return FALSE;
2444 arg = next && replace ? strchr(next, ')') + 1 : NULL;
2445 }
2447 if (!argv_append(dst_argv, buf))
2448 break;
2449 }
2451 return src_argv[argc] == NULL;
2452 }
2454 static bool
2455 restore_view_position(struct view *view)
2456 {
2457 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2458 return FALSE;
2460 /* Changing the view position cancels the restoring. */
2461 /* FIXME: Changing back to the first line is not detected. */
2462 if (view->offset != 0 || view->lineno != 0) {
2463 view->p_restore = FALSE;
2464 return FALSE;
2465 }
2467 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2468 view_is_displayed(view))
2469 werase(view->win);
2471 view->yoffset = view->p_yoffset;
2472 view->p_restore = FALSE;
2474 return TRUE;
2475 }
2477 static void
2478 end_update(struct view *view, bool force)
2479 {
2480 if (!view->pipe)
2481 return;
2482 while (!view->ops->read(view, NULL))
2483 if (!force)
2484 return;
2485 if (force)
2486 io_kill(view->pipe);
2487 io_done(view->pipe);
2488 view->pipe = NULL;
2489 }
2491 static void
2492 setup_update(struct view *view, const char *vid)
2493 {
2494 reset_view(view);
2495 string_copy_rev(view->vid, vid);
2496 view->pipe = &view->io;
2497 view->start_time = time(NULL);
2498 }
2500 static bool
2501 prepare_io(struct view *view, const char *dir, const char *argv[], bool replace)
2502 {
2503 view->dir = dir;
2504 return format_argv(&view->argv, argv, replace, !view->prev);
2505 }
2507 static bool
2508 prepare_update(struct view *view, const char *argv[], const char *dir)
2509 {
2510 if (view->pipe)
2511 end_update(view, TRUE);
2512 return prepare_io(view, dir, argv, FALSE);
2513 }
2515 static bool
2516 start_update(struct view *view, const char **argv, const char *dir)
2517 {
2518 if (view->pipe)
2519 io_done(view->pipe);
2520 return prepare_io(view, dir, argv, FALSE) &&
2521 io_run(&view->io, IO_RD, dir, view->argv);
2522 }
2524 static bool
2525 prepare_update_file(struct view *view, const char *name)
2526 {
2527 const char *file_argv[] = { opt_cdup, name , NULL };
2529 if (view->pipe)
2530 end_update(view, TRUE);
2531 return argv_copy(&view->argv, file_argv);
2532 }
2534 static bool
2535 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
2536 {
2537 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2538 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2540 if (!reload && !strcmp(view->vid, view->id))
2541 return TRUE;
2543 if (view->pipe)
2544 end_update(view, TRUE);
2546 if (!refresh) {
2547 if (!prepare_io(view, dir, argv, TRUE))
2548 return FALSE;
2550 /* Put the current ref_* value to the view title ref
2551 * member. This is needed by the blob view. Most other
2552 * views sets it automatically after loading because the
2553 * first line is a commit line. */
2554 string_copy_rev(view->ref, view->id);
2555 }
2557 if (view->argv && view->argv[0] &&
2558 !io_run(&view->io, IO_RD, view->dir, view->argv))
2559 return FALSE;
2560 else if (view->argv && !strcmp(view->argv[0], opt_cdup) &&
2561 !io_open(&view->io, "%s%s", opt_cdup, view->argv[1]))
2562 return FALSE;
2564 setup_update(view, view->id);
2566 return TRUE;
2567 }
2569 static bool
2570 view_open(struct view *view, enum open_flags flags)
2571 {
2572 return begin_update(view, NULL, NULL, flags);
2573 }
2575 static bool
2576 update_view(struct view *view)
2577 {
2578 char out_buffer[BUFSIZ * 2];
2579 char *line;
2580 /* Clear the view and redraw everything since the tree sorting
2581 * might have rearranged things. */
2582 bool redraw = view->lines == 0;
2583 bool can_read = TRUE;
2585 if (!view->pipe)
2586 return TRUE;
2588 if (!io_can_read(view->pipe, FALSE)) {
2589 if (view->lines == 0 && view_is_displayed(view)) {
2590 time_t secs = time(NULL) - view->start_time;
2592 if (secs > 1 && secs > view->update_secs) {
2593 if (view->update_secs == 0)
2594 redraw_view(view);
2595 update_view_title(view);
2596 view->update_secs = secs;
2597 }
2598 }
2599 return TRUE;
2600 }
2602 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2603 if (opt_iconv_in != ICONV_NONE) {
2604 ICONV_CONST char *inbuf = line;
2605 size_t inlen = strlen(line) + 1;
2607 char *outbuf = out_buffer;
2608 size_t outlen = sizeof(out_buffer);
2610 size_t ret;
2612 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2613 if (ret != (size_t) -1)
2614 line = out_buffer;
2615 }
2617 if (!view->ops->read(view, line)) {
2618 report("Allocation failure");
2619 end_update(view, TRUE);
2620 return FALSE;
2621 }
2622 }
2624 {
2625 unsigned long lines = view->lines;
2626 int digits;
2628 for (digits = 0; lines; digits++)
2629 lines /= 10;
2631 /* Keep the displayed view in sync with line number scaling. */
2632 if (digits != view->digits) {
2633 view->digits = digits;
2634 if (opt_line_number || view->type == VIEW_BLAME)
2635 redraw = TRUE;
2636 }
2637 }
2639 if (io_error(view->pipe)) {
2640 report("Failed to read: %s", io_strerror(view->pipe));
2641 end_update(view, TRUE);
2643 } else if (io_eof(view->pipe)) {
2644 if (view_is_displayed(view))
2645 report("");
2646 end_update(view, FALSE);
2647 }
2649 if (restore_view_position(view))
2650 redraw = TRUE;
2652 if (!view_is_displayed(view))
2653 return TRUE;
2655 if (redraw)
2656 redraw_view_from(view, 0);
2657 else
2658 redraw_view_dirty(view);
2660 /* Update the title _after_ the redraw so that if the redraw picks up a
2661 * commit reference in view->ref it'll be available here. */
2662 update_view_title(view);
2663 return TRUE;
2664 }
2666 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2668 static struct line *
2669 add_line_data(struct view *view, void *data, enum line_type type)
2670 {
2671 struct line *line;
2673 if (!realloc_lines(&view->line, view->lines, 1))
2674 return NULL;
2676 line = &view->line[view->lines++];
2677 memset(line, 0, sizeof(*line));
2678 line->type = type;
2679 line->data = data;
2680 line->dirty = 1;
2682 return line;
2683 }
2685 static struct line *
2686 add_line_text(struct view *view, const char *text, enum line_type type)
2687 {
2688 char *data = text ? strdup(text) : NULL;
2690 return data ? add_line_data(view, data, type) : NULL;
2691 }
2693 static struct line *
2694 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2695 {
2696 char buf[SIZEOF_STR];
2697 va_list args;
2699 va_start(args, fmt);
2700 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2701 buf[0] = 0;
2702 va_end(args);
2704 return buf[0] ? add_line_text(view, buf, type) : NULL;
2705 }
2707 /*
2708 * View opening
2709 */
2711 static void
2712 open_view(struct view *prev, enum request request, enum open_flags flags)
2713 {
2714 bool split = !!(flags & OPEN_SPLIT);
2715 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2716 bool nomaximize = !!(flags & OPEN_REFRESH);
2717 struct view *view = VIEW(request);
2718 int nviews = displayed_views();
2719 struct view *base_view = display[0];
2721 if (view == prev && nviews == 1 && !reload) {
2722 report("Already in %s view", view->name);
2723 return;
2724 }
2726 if (view->git_dir && !opt_git_dir[0]) {
2727 report("The %s view is disabled in pager view", view->name);
2728 return;
2729 }
2731 if (split) {
2732 display[1] = view;
2733 current_view = 1;
2734 view->parent = prev;
2735 } else if (!nomaximize) {
2736 /* Maximize the current view. */
2737 memset(display, 0, sizeof(display));
2738 current_view = 0;
2739 display[current_view] = view;
2740 }
2742 /* No prev signals that this is the first loaded view. */
2743 if (prev && view != prev) {
2744 view->prev = prev;
2745 }
2747 /* Resize the view when switching between split- and full-screen,
2748 * or when switching between two different full-screen views. */
2749 if (nviews != displayed_views() ||
2750 (nviews == 1 && base_view != display[0]))
2751 resize_display();
2753 if (view->ops->open) {
2754 if (view->pipe)
2755 end_update(view, TRUE);
2756 if (!view->ops->open(view, flags)) {
2757 report("Failed to load %s view", view->name);
2758 return;
2759 }
2760 restore_view_position(view);
2761 }
2763 if (split && prev->lineno - prev->offset >= prev->height) {
2764 /* Take the title line into account. */
2765 int lines = prev->lineno - prev->offset - prev->height + 1;
2767 /* Scroll the view that was split if the current line is
2768 * outside the new limited view. */
2769 do_scroll_view(prev, lines);
2770 }
2772 if (prev && view != prev && split && view_is_displayed(prev)) {
2773 /* "Blur" the previous view. */
2774 update_view_title(prev);
2775 }
2777 if (view->pipe && view->lines == 0) {
2778 /* Clear the old view and let the incremental updating refill
2779 * the screen. */
2780 werase(view->win);
2781 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2782 report("");
2783 } else if (view_is_displayed(view)) {
2784 redraw_view(view);
2785 report("");
2786 }
2787 }
2789 static void
2790 open_external_viewer(const char *argv[], const char *dir)
2791 {
2792 def_prog_mode(); /* save current tty modes */
2793 endwin(); /* restore original tty modes */
2794 io_run_fg(argv, dir);
2795 fprintf(stderr, "Press Enter to continue");
2796 getc(opt_tty);
2797 reset_prog_mode();
2798 redraw_display(TRUE);
2799 }
2801 static void
2802 open_mergetool(const char *file)
2803 {
2804 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2806 open_external_viewer(mergetool_argv, opt_cdup);
2807 }
2809 static void
2810 open_editor(const char *file)
2811 {
2812 const char *editor_argv[] = { "vi", file, NULL };
2813 const char *editor;
2815 editor = getenv("GIT_EDITOR");
2816 if (!editor && *opt_editor)
2817 editor = opt_editor;
2818 if (!editor)
2819 editor = getenv("VISUAL");
2820 if (!editor)
2821 editor = getenv("EDITOR");
2822 if (!editor)
2823 editor = "vi";
2825 editor_argv[0] = editor;
2826 open_external_viewer(editor_argv, opt_cdup);
2827 }
2829 static void
2830 open_run_request(enum request request)
2831 {
2832 struct run_request *req = get_run_request(request);
2833 const char **argv = NULL;
2835 if (!req) {
2836 report("Unknown run request");
2837 return;
2838 }
2840 if (format_argv(&argv, req->argv, TRUE, FALSE))
2841 open_external_viewer(argv, NULL);
2842 if (argv)
2843 argv_free(argv);
2844 free(argv);
2845 }
2847 /*
2848 * User request switch noodle
2849 */
2851 static int
2852 view_driver(struct view *view, enum request request)
2853 {
2854 int i;
2856 if (request == REQ_NONE)
2857 return TRUE;
2859 if (request > REQ_NONE) {
2860 open_run_request(request);
2861 view_request(view, REQ_REFRESH);
2862 return TRUE;
2863 }
2865 request = view_request(view, request);
2866 if (request == REQ_NONE)
2867 return TRUE;
2869 switch (request) {
2870 case REQ_MOVE_UP:
2871 case REQ_MOVE_DOWN:
2872 case REQ_MOVE_PAGE_UP:
2873 case REQ_MOVE_PAGE_DOWN:
2874 case REQ_MOVE_FIRST_LINE:
2875 case REQ_MOVE_LAST_LINE:
2876 move_view(view, request);
2877 break;
2879 case REQ_SCROLL_FIRST_COL:
2880 case REQ_SCROLL_LEFT:
2881 case REQ_SCROLL_RIGHT:
2882 case REQ_SCROLL_LINE_DOWN:
2883 case REQ_SCROLL_LINE_UP:
2884 case REQ_SCROLL_PAGE_DOWN:
2885 case REQ_SCROLL_PAGE_UP:
2886 scroll_view(view, request);
2887 break;
2889 case REQ_VIEW_BLAME:
2890 if (!opt_file[0]) {
2891 report("No file chosen, press %s to open tree view",
2892 get_key(view->keymap, REQ_VIEW_TREE));
2893 break;
2894 }
2895 open_view(view, request, OPEN_DEFAULT);
2896 break;
2898 case REQ_VIEW_BLOB:
2899 if (!ref_blob[0]) {
2900 report("No file chosen, press %s to open tree view",
2901 get_key(view->keymap, REQ_VIEW_TREE));
2902 break;
2903 }
2904 open_view(view, request, OPEN_DEFAULT);
2905 break;
2907 case REQ_VIEW_PAGER:
2908 if (view == NULL) {
2909 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2910 die("Failed to open stdin");
2911 open_view(view, request, OPEN_PREPARED);
2912 break;
2913 }
2915 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2916 report("No pager content, press %s to run command from prompt",
2917 get_key(view->keymap, REQ_PROMPT));
2918 break;
2919 }
2920 open_view(view, request, OPEN_DEFAULT);
2921 break;
2923 case REQ_VIEW_STAGE:
2924 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2925 report("No stage content, press %s to open the status view and choose file",
2926 get_key(view->keymap, REQ_VIEW_STATUS));
2927 break;
2928 }
2929 open_view(view, request, OPEN_DEFAULT);
2930 break;
2932 case REQ_VIEW_STATUS:
2933 if (opt_is_inside_work_tree == FALSE) {
2934 report("The status view requires a working tree");
2935 break;
2936 }
2937 open_view(view, request, OPEN_DEFAULT);
2938 break;
2940 case REQ_VIEW_MAIN:
2941 case REQ_VIEW_DIFF:
2942 case REQ_VIEW_LOG:
2943 case REQ_VIEW_TREE:
2944 case REQ_VIEW_HELP:
2945 case REQ_VIEW_BRANCH:
2946 open_view(view, request, OPEN_DEFAULT);
2947 break;
2949 case REQ_NEXT:
2950 case REQ_PREVIOUS:
2951 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2953 if (view->parent) {
2954 int line;
2956 view = view->parent;
2957 line = view->lineno;
2958 move_view(view, request);
2959 if (view_is_displayed(view))
2960 update_view_title(view);
2961 if (line != view->lineno)
2962 view_request(view, REQ_ENTER);
2963 } else {
2964 move_view(view, request);
2965 }
2966 break;
2968 case REQ_VIEW_NEXT:
2969 {
2970 int nviews = displayed_views();
2971 int next_view = (current_view + 1) % nviews;
2973 if (next_view == current_view) {
2974 report("Only one view is displayed");
2975 break;
2976 }
2978 current_view = next_view;
2979 /* Blur out the title of the previous view. */
2980 update_view_title(view);
2981 report("");
2982 break;
2983 }
2984 case REQ_REFRESH:
2985 report("Refreshing is not yet supported for the %s view", view->name);
2986 break;
2988 case REQ_MAXIMIZE:
2989 if (displayed_views() == 2)
2990 maximize_view(view);
2991 break;
2993 case REQ_OPTIONS:
2994 case REQ_TOGGLE_LINENO:
2995 case REQ_TOGGLE_DATE:
2996 case REQ_TOGGLE_AUTHOR:
2997 case REQ_TOGGLE_GRAPHIC:
2998 case REQ_TOGGLE_REV_GRAPH:
2999 case REQ_TOGGLE_REFS:
3000 toggle_option(request);
3001 break;
3003 case REQ_TOGGLE_SORT_FIELD:
3004 case REQ_TOGGLE_SORT_ORDER:
3005 report("Sorting is not yet supported for the %s view", view->name);
3006 break;
3008 case REQ_SEARCH:
3009 case REQ_SEARCH_BACK:
3010 search_view(view, request);
3011 break;
3013 case REQ_FIND_NEXT:
3014 case REQ_FIND_PREV:
3015 find_next(view, request);
3016 break;
3018 case REQ_STOP_LOADING:
3019 foreach_view(view, i) {
3020 if (view->pipe)
3021 report("Stopped loading the %s view", view->name),
3022 end_update(view, TRUE);
3023 }
3024 break;
3026 case REQ_SHOW_VERSION:
3027 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3028 return TRUE;
3030 case REQ_SCREEN_REDRAW:
3031 redraw_display(TRUE);
3032 break;
3034 case REQ_EDIT:
3035 report("Nothing to edit");
3036 break;
3038 case REQ_ENTER:
3039 report("Nothing to enter");
3040 break;
3042 case REQ_VIEW_CLOSE:
3043 /* XXX: Mark closed views by letting view->prev point to the
3044 * view itself. Parents to closed view should never be
3045 * followed. */
3046 if (view->prev && view->prev != view) {
3047 maximize_view(view->prev);
3048 view->prev = view;
3049 break;
3050 }
3051 /* Fall-through */
3052 case REQ_QUIT:
3053 return FALSE;
3055 default:
3056 report("Unknown key, press %s for help",
3057 get_key(view->keymap, REQ_VIEW_HELP));
3058 return TRUE;
3059 }
3061 return TRUE;
3062 }
3065 /*
3066 * View backend utilities
3067 */
3069 enum sort_field {
3070 ORDERBY_NAME,
3071 ORDERBY_DATE,
3072 ORDERBY_AUTHOR,
3073 };
3075 struct sort_state {
3076 const enum sort_field *fields;
3077 size_t size, current;
3078 bool reverse;
3079 };
3081 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3082 #define get_sort_field(state) ((state).fields[(state).current])
3083 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3085 static void
3086 sort_view(struct view *view, enum request request, struct sort_state *state,
3087 int (*compare)(const void *, const void *))
3088 {
3089 switch (request) {
3090 case REQ_TOGGLE_SORT_FIELD:
3091 state->current = (state->current + 1) % state->size;
3092 break;
3094 case REQ_TOGGLE_SORT_ORDER:
3095 state->reverse = !state->reverse;
3096 break;
3097 default:
3098 die("Not a sort request");
3099 }
3101 qsort(view->line, view->lines, sizeof(*view->line), compare);
3102 redraw_view(view);
3103 }
3105 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3107 /* Small author cache to reduce memory consumption. It uses binary
3108 * search to lookup or find place to position new entries. No entries
3109 * are ever freed. */
3110 static const char *
3111 get_author(const char *name)
3112 {
3113 static const char **authors;
3114 static size_t authors_size;
3115 int from = 0, to = authors_size - 1;
3117 while (from <= to) {
3118 size_t pos = (to + from) / 2;
3119 int cmp = strcmp(name, authors[pos]);
3121 if (!cmp)
3122 return authors[pos];
3124 if (cmp < 0)
3125 to = pos - 1;
3126 else
3127 from = pos + 1;
3128 }
3130 if (!realloc_authors(&authors, authors_size, 1))
3131 return NULL;
3132 name = strdup(name);
3133 if (!name)
3134 return NULL;
3136 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3137 authors[from] = name;
3138 authors_size++;
3140 return name;
3141 }
3143 static void
3144 parse_timesec(struct time *time, const char *sec)
3145 {
3146 time->sec = (time_t) atol(sec);
3147 }
3149 static void
3150 parse_timezone(struct time *time, const char *zone)
3151 {
3152 long tz;
3154 tz = ('0' - zone[1]) * 60 * 60 * 10;
3155 tz += ('0' - zone[2]) * 60 * 60;
3156 tz += ('0' - zone[3]) * 60 * 10;
3157 tz += ('0' - zone[4]) * 60;
3159 if (zone[0] == '-')
3160 tz = -tz;
3162 time->tz = tz;
3163 time->sec -= tz;
3164 }
3166 /* Parse author lines where the name may be empty:
3167 * author <email@address.tld> 1138474660 +0100
3168 */
3169 static void
3170 parse_author_line(char *ident, const char **author, struct time *time)
3171 {
3172 char *nameend = strchr(ident, '<');
3173 char *emailend = strchr(ident, '>');
3175 if (nameend && emailend)
3176 *nameend = *emailend = 0;
3177 ident = chomp_string(ident);
3178 if (!*ident) {
3179 if (nameend)
3180 ident = chomp_string(nameend + 1);
3181 if (!*ident)
3182 ident = "Unknown";
3183 }
3185 *author = get_author(ident);
3187 /* Parse epoch and timezone */
3188 if (emailend && emailend[1] == ' ') {
3189 char *secs = emailend + 2;
3190 char *zone = strchr(secs, ' ');
3192 parse_timesec(time, secs);
3194 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3195 parse_timezone(time, zone + 1);
3196 }
3197 }
3199 /*
3200 * Pager backend
3201 */
3203 static bool
3204 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3205 {
3206 if (opt_line_number && draw_lineno(view, lineno))
3207 return TRUE;
3209 draw_text(view, line->type, line->data);
3210 return TRUE;
3211 }
3213 static bool
3214 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3215 {
3216 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3217 char ref[SIZEOF_STR];
3219 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3220 return TRUE;
3222 /* This is the only fatal call, since it can "corrupt" the buffer. */
3223 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3224 return FALSE;
3226 return TRUE;
3227 }
3229 static void
3230 add_pager_refs(struct view *view, struct line *line)
3231 {
3232 char buf[SIZEOF_STR];
3233 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3234 struct ref_list *list;
3235 size_t bufpos = 0, i;
3236 const char *sep = "Refs: ";
3237 bool is_tag = FALSE;
3239 assert(line->type == LINE_COMMIT);
3241 list = get_ref_list(commit_id);
3242 if (!list) {
3243 if (view->type == VIEW_DIFF)
3244 goto try_add_describe_ref;
3245 return;
3246 }
3248 for (i = 0; i < list->size; i++) {
3249 struct ref *ref = list->refs[i];
3250 const char *fmt = ref->tag ? "%s[%s]" :
3251 ref->remote ? "%s<%s>" : "%s%s";
3253 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3254 return;
3255 sep = ", ";
3256 if (ref->tag)
3257 is_tag = TRUE;
3258 }
3260 if (!is_tag && view->type == VIEW_DIFF) {
3261 try_add_describe_ref:
3262 /* Add <tag>-g<commit_id> "fake" reference. */
3263 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3264 return;
3265 }
3267 if (bufpos == 0)
3268 return;
3270 add_line_text(view, buf, LINE_PP_REFS);
3271 }
3273 static bool
3274 pager_read(struct view *view, char *data)
3275 {
3276 struct line *line;
3278 if (!data)
3279 return TRUE;
3281 line = add_line_text(view, data, get_line_type(data));
3282 if (!line)
3283 return FALSE;
3285 if (line->type == LINE_COMMIT &&
3286 (view->type == VIEW_DIFF ||
3287 view->type == VIEW_LOG))
3288 add_pager_refs(view, line);
3290 return TRUE;
3291 }
3293 static enum request
3294 pager_request(struct view *view, enum request request, struct line *line)
3295 {
3296 int split = 0;
3298 if (request != REQ_ENTER)
3299 return request;
3301 if (line->type == LINE_COMMIT &&
3302 (view->type == VIEW_LOG ||
3303 view->type == VIEW_PAGER)) {
3304 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3305 split = 1;
3306 }
3308 /* Always scroll the view even if it was split. That way
3309 * you can use Enter to scroll through the log view and
3310 * split open each commit diff. */
3311 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3313 /* FIXME: A minor workaround. Scrolling the view will call report("")
3314 * but if we are scrolling a non-current view this won't properly
3315 * update the view title. */
3316 if (split)
3317 update_view_title(view);
3319 return REQ_NONE;
3320 }
3322 static bool
3323 pager_grep(struct view *view, struct line *line)
3324 {
3325 const char *text[] = { line->data, NULL };
3327 return grep_text(view, text);
3328 }
3330 static void
3331 pager_select(struct view *view, struct line *line)
3332 {
3333 if (line->type == LINE_COMMIT) {
3334 char *text = (char *)line->data + STRING_SIZE("commit ");
3336 if (view->type != VIEW_PAGER)
3337 string_copy_rev(view->ref, text);
3338 string_copy_rev(ref_commit, text);
3339 }
3340 }
3342 static struct view_ops pager_ops = {
3343 "line",
3344 view_open,
3345 pager_read,
3346 pager_draw,
3347 pager_request,
3348 pager_grep,
3349 pager_select,
3350 };
3352 static bool
3353 log_open(struct view *view, enum open_flags flags)
3354 {
3355 static const char *log_argv[] = {
3356 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3357 };
3359 return begin_update(view, NULL, log_argv, flags);
3360 }
3362 static enum request
3363 log_request(struct view *view, enum request request, struct line *line)
3364 {
3365 switch (request) {
3366 case REQ_REFRESH:
3367 load_refs();
3368 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3369 return REQ_NONE;
3370 default:
3371 return pager_request(view, request, line);
3372 }
3373 }
3375 static struct view_ops log_ops = {
3376 "line",
3377 log_open,
3378 pager_read,
3379 pager_draw,
3380 log_request,
3381 pager_grep,
3382 pager_select,
3383 };
3385 static bool
3386 diff_open(struct view *view, enum open_flags flags)
3387 {
3388 static const char *diff_argv[] = {
3389 "git", "show", "--pretty=fuller", "--no-color", "--root",
3390 "--patch-with-stat", "--find-copies-harder", "-C",
3391 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3392 };
3394 return begin_update(view, NULL, diff_argv, flags);
3395 }
3397 static bool
3398 diff_read(struct view *view, char *data)
3399 {
3400 if (!data) {
3401 /* Fall back to retry if no diff will be shown. */
3402 if (view->lines == 0 && opt_file_argv) {
3403 int pos = argv_size(view->argv)
3404 - argv_size(opt_file_argv) - 1;
3406 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3407 for (; view->argv[pos]; pos++) {
3408 free((void *) view->argv[pos]);
3409 view->argv[pos] = NULL;
3410 }
3412 if (view->pipe)
3413 io_done(view->pipe);
3414 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3415 return FALSE;
3416 }
3417 }
3418 return TRUE;
3419 }
3421 return pager_read(view, data);
3422 }
3424 static struct view_ops diff_ops = {
3425 "line",
3426 diff_open,
3427 diff_read,
3428 pager_draw,
3429 pager_request,
3430 pager_grep,
3431 pager_select,
3432 };
3434 /*
3435 * Help backend
3436 */
3438 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
3440 static bool
3441 help_open_keymap_title(struct view *view, enum keymap keymap)
3442 {
3443 struct line *line;
3445 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3446 help_keymap_hidden[keymap] ? '+' : '-',
3447 enum_name(keymap_table[keymap]));
3448 if (line)
3449 line->other = keymap;
3451 return help_keymap_hidden[keymap];
3452 }
3454 static void
3455 help_open_keymap(struct view *view, enum keymap keymap)
3456 {
3457 const char *group = NULL;
3458 char buf[SIZEOF_STR];
3459 size_t bufpos;
3460 bool add_title = TRUE;
3461 int i;
3463 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3464 const char *key = NULL;
3466 if (req_info[i].request == REQ_NONE)
3467 continue;
3469 if (!req_info[i].request) {
3470 group = req_info[i].help;
3471 continue;
3472 }
3474 key = get_keys(keymap, req_info[i].request, TRUE);
3475 if (!key || !*key)
3476 continue;
3478 if (add_title && help_open_keymap_title(view, keymap))
3479 return;
3480 add_title = FALSE;
3482 if (group) {
3483 add_line_text(view, group, LINE_HELP_GROUP);
3484 group = NULL;
3485 }
3487 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3488 enum_name(req_info[i]), req_info[i].help);
3489 }
3491 group = "External commands:";
3493 for (i = 0; i < run_requests; i++) {
3494 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3495 const char *key;
3496 int argc;
3498 if (!req || req->keymap != keymap)
3499 continue;
3501 key = get_key_name(req->key);
3502 if (!*key)
3503 key = "(no key defined)";
3505 if (add_title && help_open_keymap_title(view, keymap))
3506 return;
3507 if (group) {
3508 add_line_text(view, group, LINE_HELP_GROUP);
3509 group = NULL;
3510 }
3512 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3513 if (!string_format_from(buf, &bufpos, "%s%s",
3514 argc ? " " : "", req->argv[argc]))
3515 return;
3517 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3518 }
3519 }
3521 static bool
3522 help_open(struct view *view, enum open_flags flags)
3523 {
3524 enum keymap keymap;
3526 reset_view(view);
3527 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3528 add_line_text(view, "", LINE_DEFAULT);
3530 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
3531 help_open_keymap(view, keymap);
3533 return TRUE;
3534 }
3536 static enum request
3537 help_request(struct view *view, enum request request, struct line *line)
3538 {
3539 switch (request) {
3540 case REQ_ENTER:
3541 if (line->type == LINE_HELP_KEYMAP) {
3542 help_keymap_hidden[line->other] =
3543 !help_keymap_hidden[line->other];
3544 view->p_restore = TRUE;
3545 open_view(view, REQ_VIEW_HELP, OPEN_REFRESH);
3546 }
3548 return REQ_NONE;
3549 default:
3550 return pager_request(view, request, line);
3551 }
3552 }
3554 static struct view_ops help_ops = {
3555 "line",
3556 help_open,
3557 NULL,
3558 pager_draw,
3559 help_request,
3560 pager_grep,
3561 pager_select,
3562 };
3565 /*
3566 * Tree backend
3567 */
3569 struct tree_stack_entry {
3570 struct tree_stack_entry *prev; /* Entry below this in the stack */
3571 unsigned long lineno; /* Line number to restore */
3572 char *name; /* Position of name in opt_path */
3573 };
3575 /* The top of the path stack. */
3576 static struct tree_stack_entry *tree_stack = NULL;
3577 unsigned long tree_lineno = 0;
3579 static void
3580 pop_tree_stack_entry(void)
3581 {
3582 struct tree_stack_entry *entry = tree_stack;
3584 tree_lineno = entry->lineno;
3585 entry->name[0] = 0;
3586 tree_stack = entry->prev;
3587 free(entry);
3588 }
3590 static void
3591 push_tree_stack_entry(const char *name, unsigned long lineno)
3592 {
3593 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3594 size_t pathlen = strlen(opt_path);
3596 if (!entry)
3597 return;
3599 entry->prev = tree_stack;
3600 entry->name = opt_path + pathlen;
3601 tree_stack = entry;
3603 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3604 pop_tree_stack_entry();
3605 return;
3606 }
3608 /* Move the current line to the first tree entry. */
3609 tree_lineno = 1;
3610 entry->lineno = lineno;
3611 }
3613 /* Parse output from git-ls-tree(1):
3614 *
3615 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3616 */
3618 #define SIZEOF_TREE_ATTR \
3619 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3621 #define SIZEOF_TREE_MODE \
3622 STRING_SIZE("100644 ")
3624 #define TREE_ID_OFFSET \
3625 STRING_SIZE("100644 blob ")
3627 struct tree_entry {
3628 char id[SIZEOF_REV];
3629 mode_t mode;
3630 struct time time; /* Date from the author ident. */
3631 const char *author; /* Author of the commit. */
3632 char name[1];
3633 };
3635 static const char *
3636 tree_path(const struct line *line)
3637 {
3638 return ((struct tree_entry *) line->data)->name;
3639 }
3641 static int
3642 tree_compare_entry(const struct line *line1, const struct line *line2)
3643 {
3644 if (line1->type != line2->type)
3645 return line1->type == LINE_TREE_DIR ? -1 : 1;
3646 return strcmp(tree_path(line1), tree_path(line2));
3647 }
3649 static const enum sort_field tree_sort_fields[] = {
3650 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3651 };
3652 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3654 static int
3655 tree_compare(const void *l1, const void *l2)
3656 {
3657 const struct line *line1 = (const struct line *) l1;
3658 const struct line *line2 = (const struct line *) l2;
3659 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3660 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3662 if (line1->type == LINE_TREE_HEAD)
3663 return -1;
3664 if (line2->type == LINE_TREE_HEAD)
3665 return 1;
3667 switch (get_sort_field(tree_sort_state)) {
3668 case ORDERBY_DATE:
3669 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3671 case ORDERBY_AUTHOR:
3672 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3674 case ORDERBY_NAME:
3675 default:
3676 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3677 }
3678 }
3681 static struct line *
3682 tree_entry(struct view *view, enum line_type type, const char *path,
3683 const char *mode, const char *id)
3684 {
3685 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3686 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3688 if (!entry || !line) {
3689 free(entry);
3690 return NULL;
3691 }
3693 strncpy(entry->name, path, strlen(path));
3694 if (mode)
3695 entry->mode = strtoul(mode, NULL, 8);
3696 if (id)
3697 string_copy_rev(entry->id, id);
3699 return line;
3700 }
3702 static bool
3703 tree_read_date(struct view *view, char *text, bool *read_date)
3704 {
3705 static const char *author_name;
3706 static struct time author_time;
3708 if (!text && *read_date) {
3709 *read_date = FALSE;
3710 return TRUE;
3712 } else if (!text) {
3713 char *path = *opt_path ? opt_path : ".";
3714 /* Find next entry to process */
3715 const char *log_file[] = {
3716 "git", "log", "--no-color", "--pretty=raw",
3717 "--cc", "--raw", view->id, "--", path, NULL
3718 };
3720 if (!view->lines) {
3721 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3722 report("Tree is empty");
3723 return TRUE;
3724 }
3726 if (!start_update(view, log_file, opt_cdup)) {
3727 report("Failed to load tree data");
3728 return TRUE;
3729 }
3731 *read_date = TRUE;
3732 return FALSE;
3734 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3735 parse_author_line(text + STRING_SIZE("author "),
3736 &author_name, &author_time);
3738 } else if (*text == ':') {
3739 char *pos;
3740 size_t annotated = 1;
3741 size_t i;
3743 pos = strchr(text, '\t');
3744 if (!pos)
3745 return TRUE;
3746 text = pos + 1;
3747 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3748 text += strlen(opt_path);
3749 pos = strchr(text, '/');
3750 if (pos)
3751 *pos = 0;
3753 for (i = 1; i < view->lines; i++) {
3754 struct line *line = &view->line[i];
3755 struct tree_entry *entry = line->data;
3757 annotated += !!entry->author;
3758 if (entry->author || strcmp(entry->name, text))
3759 continue;
3761 entry->author = author_name;
3762 entry->time = author_time;
3763 line->dirty = 1;
3764 break;
3765 }
3767 if (annotated == view->lines)
3768 io_kill(view->pipe);
3769 }
3770 return TRUE;
3771 }
3773 static bool
3774 tree_read(struct view *view, char *text)
3775 {
3776 static bool read_date = FALSE;
3777 struct tree_entry *data;
3778 struct line *entry, *line;
3779 enum line_type type;
3780 size_t textlen = text ? strlen(text) : 0;
3781 char *path = text + SIZEOF_TREE_ATTR;
3783 if (read_date || !text)
3784 return tree_read_date(view, text, &read_date);
3786 if (textlen <= SIZEOF_TREE_ATTR)
3787 return FALSE;
3788 if (view->lines == 0 &&
3789 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3790 return FALSE;
3792 /* Strip the path part ... */
3793 if (*opt_path) {
3794 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3795 size_t striplen = strlen(opt_path);
3797 if (pathlen > striplen)
3798 memmove(path, path + striplen,
3799 pathlen - striplen + 1);
3801 /* Insert "link" to parent directory. */
3802 if (view->lines == 1 &&
3803 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3804 return FALSE;
3805 }
3807 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3808 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3809 if (!entry)
3810 return FALSE;
3811 data = entry->data;
3813 /* Skip "Directory ..." and ".." line. */
3814 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3815 if (tree_compare_entry(line, entry) <= 0)
3816 continue;
3818 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3820 line->data = data;
3821 line->type = type;
3822 for (; line <= entry; line++)
3823 line->dirty = line->cleareol = 1;
3824 return TRUE;
3825 }
3827 if (tree_lineno > view->lineno) {
3828 view->lineno = tree_lineno;
3829 tree_lineno = 0;
3830 }
3832 return TRUE;
3833 }
3835 static bool
3836 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3837 {
3838 struct tree_entry *entry = line->data;
3840 if (line->type == LINE_TREE_HEAD) {
3841 if (draw_text(view, line->type, "Directory path /"))
3842 return TRUE;
3843 } else {
3844 if (draw_mode(view, entry->mode))
3845 return TRUE;
3847 if (draw_author(view, entry->author))
3848 return TRUE;
3850 if (draw_date(view, &entry->time))
3851 return TRUE;
3852 }
3854 draw_text(view, line->type, entry->name);
3855 return TRUE;
3856 }
3858 static void
3859 open_blob_editor(const char *id)
3860 {
3861 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3862 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3863 int fd = mkstemp(file);
3865 if (fd == -1)
3866 report("Failed to create temporary file");
3867 else if (!io_run_append(blob_argv, fd))
3868 report("Failed to save blob data to file");
3869 else
3870 open_editor(file);
3871 if (fd != -1)
3872 unlink(file);
3873 }
3875 static enum request
3876 tree_request(struct view *view, enum request request, struct line *line)
3877 {
3878 enum open_flags flags;
3879 struct tree_entry *entry = line->data;
3881 switch (request) {
3882 case REQ_VIEW_BLAME:
3883 if (line->type != LINE_TREE_FILE) {
3884 report("Blame only supported for files");
3885 return REQ_NONE;
3886 }
3888 string_copy(opt_ref, view->vid);
3889 return request;
3891 case REQ_EDIT:
3892 if (line->type != LINE_TREE_FILE) {
3893 report("Edit only supported for files");
3894 } else if (!is_head_commit(view->vid)) {
3895 open_blob_editor(entry->id);
3896 } else {
3897 open_editor(opt_file);
3898 }
3899 return REQ_NONE;
3901 case REQ_TOGGLE_SORT_FIELD:
3902 case REQ_TOGGLE_SORT_ORDER:
3903 sort_view(view, request, &tree_sort_state, tree_compare);
3904 return REQ_NONE;
3906 case REQ_PARENT:
3907 if (!*opt_path) {
3908 /* quit view if at top of tree */
3909 return REQ_VIEW_CLOSE;
3910 }
3911 /* fake 'cd ..' */
3912 line = &view->line[1];
3913 break;
3915 case REQ_ENTER:
3916 break;
3918 default:
3919 return request;
3920 }
3922 /* Cleanup the stack if the tree view is at a different tree. */
3923 while (!*opt_path && tree_stack)
3924 pop_tree_stack_entry();
3926 switch (line->type) {
3927 case LINE_TREE_DIR:
3928 /* Depending on whether it is a subdirectory or parent link
3929 * mangle the path buffer. */
3930 if (line == &view->line[1] && *opt_path) {
3931 pop_tree_stack_entry();
3933 } else {
3934 const char *basename = tree_path(line);
3936 push_tree_stack_entry(basename, view->lineno);
3937 }
3939 /* Trees and subtrees share the same ID, so they are not not
3940 * unique like blobs. */
3941 flags = OPEN_RELOAD;
3942 request = REQ_VIEW_TREE;
3943 break;
3945 case LINE_TREE_FILE:
3946 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3947 request = REQ_VIEW_BLOB;
3948 break;
3950 default:
3951 return REQ_NONE;
3952 }
3954 open_view(view, request, flags);
3955 if (request == REQ_VIEW_TREE)
3956 view->lineno = tree_lineno;
3958 return REQ_NONE;
3959 }
3961 static bool
3962 tree_grep(struct view *view, struct line *line)
3963 {
3964 struct tree_entry *entry = line->data;
3965 const char *text[] = {
3966 entry->name,
3967 opt_author ? entry->author : "",
3968 mkdate(&entry->time, opt_date),
3969 NULL
3970 };
3972 return grep_text(view, text);
3973 }
3975 static void
3976 tree_select(struct view *view, struct line *line)
3977 {
3978 struct tree_entry *entry = line->data;
3980 if (line->type == LINE_TREE_FILE) {
3981 string_copy_rev(ref_blob, entry->id);
3982 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3984 } else if (line->type != LINE_TREE_DIR) {
3985 return;
3986 }
3988 string_copy_rev(view->ref, entry->id);
3989 }
3991 static bool
3992 tree_open(struct view *view, enum open_flags flags)
3993 {
3994 static const char *tree_argv[] = {
3995 "git", "ls-tree", "%(commit)", "%(directory)", NULL
3996 };
3998 if (view->lines == 0 && opt_prefix[0]) {
3999 char *pos = opt_prefix;
4001 while (pos && *pos) {
4002 char *end = strchr(pos, '/');
4004 if (end)
4005 *end = 0;
4006 push_tree_stack_entry(pos, 0);
4007 pos = end;
4008 if (end) {
4009 *end = '/';
4010 pos++;
4011 }
4012 }
4014 } else if (strcmp(view->vid, view->id)) {
4015 opt_path[0] = 0;
4016 }
4018 return begin_update(view, opt_cdup, tree_argv, flags);
4019 }
4021 static struct view_ops tree_ops = {
4022 "file",
4023 tree_open,
4024 tree_read,
4025 tree_draw,
4026 tree_request,
4027 tree_grep,
4028 tree_select,
4029 };
4031 static bool
4032 blob_open(struct view *view, enum open_flags flags)
4033 {
4034 static const char *blob_argv[] = {
4035 "git", "cat-file", "blob", "%(blob)", NULL
4036 };
4038 return begin_update(view, NULL, blob_argv, flags);
4039 }
4041 static bool
4042 blob_read(struct view *view, char *line)
4043 {
4044 if (!line)
4045 return TRUE;
4046 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4047 }
4049 static enum request
4050 blob_request(struct view *view, enum request request, struct line *line)
4051 {
4052 switch (request) {
4053 case REQ_EDIT:
4054 open_blob_editor(view->vid);
4055 return REQ_NONE;
4056 default:
4057 return pager_request(view, request, line);
4058 }
4059 }
4061 static struct view_ops blob_ops = {
4062 "line",
4063 blob_open,
4064 blob_read,
4065 pager_draw,
4066 blob_request,
4067 pager_grep,
4068 pager_select,
4069 };
4071 /*
4072 * Blame backend
4073 *
4074 * Loading the blame view is a two phase job:
4075 *
4076 * 1. File content is read either using opt_file from the
4077 * filesystem or using git-cat-file.
4078 * 2. Then blame information is incrementally added by
4079 * reading output from git-blame.
4080 */
4082 struct blame_commit {
4083 char id[SIZEOF_REV]; /* SHA1 ID. */
4084 char title[128]; /* First line of the commit message. */
4085 const char *author; /* Author of the commit. */
4086 struct time time; /* Date from the author ident. */
4087 char filename[128]; /* Name of file. */
4088 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4089 char parent_filename[128]; /* Parent/previous name of file. */
4090 };
4092 struct blame {
4093 struct blame_commit *commit;
4094 unsigned long lineno;
4095 char text[1];
4096 };
4098 static bool
4099 blame_open(struct view *view, enum open_flags flags)
4100 {
4101 char path[SIZEOF_STR];
4102 size_t i;
4104 if (!view->prev && *opt_prefix) {
4105 string_copy(path, opt_file);
4106 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4107 return FALSE;
4108 }
4110 if (*opt_ref || !io_open(&view->io, "%s%s", opt_cdup, opt_file)) {
4111 const char *blame_cat_file_argv[] = {
4112 "git", "cat-file", "blob", path, NULL
4113 };
4115 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4116 !start_update(view, blame_cat_file_argv, opt_cdup))
4117 return FALSE;
4118 }
4120 /* First pass: remove multiple references to the same commit. */
4121 for (i = 0; i < view->lines; i++) {
4122 struct blame *blame = view->line[i].data;
4124 if (blame->commit && blame->commit->id[0])
4125 blame->commit->id[0] = 0;
4126 else
4127 blame->commit = NULL;
4128 }
4130 /* Second pass: free existing references. */
4131 for (i = 0; i < view->lines; i++) {
4132 struct blame *blame = view->line[i].data;
4134 if (blame->commit)
4135 free(blame->commit);
4136 }
4138 setup_update(view, opt_file);
4139 string_format(view->ref, "%s ...", opt_file);
4141 return TRUE;
4142 }
4144 static struct blame_commit *
4145 get_blame_commit(struct view *view, const char *id)
4146 {
4147 size_t i;
4149 for (i = 0; i < view->lines; i++) {
4150 struct blame *blame = view->line[i].data;
4152 if (!blame->commit)
4153 continue;
4155 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4156 return blame->commit;
4157 }
4159 {
4160 struct blame_commit *commit = calloc(1, sizeof(*commit));
4162 if (commit)
4163 string_ncopy(commit->id, id, SIZEOF_REV);
4164 return commit;
4165 }
4166 }
4168 static bool
4169 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4170 {
4171 const char *pos = *posref;
4173 *posref = NULL;
4174 pos = strchr(pos + 1, ' ');
4175 if (!pos || !isdigit(pos[1]))
4176 return FALSE;
4177 *number = atoi(pos + 1);
4178 if (*number < min || *number > max)
4179 return FALSE;
4181 *posref = pos;
4182 return TRUE;
4183 }
4185 static struct blame_commit *
4186 parse_blame_commit(struct view *view, const char *text, int *blamed)
4187 {
4188 struct blame_commit *commit;
4189 struct blame *blame;
4190 const char *pos = text + SIZEOF_REV - 2;
4191 size_t orig_lineno = 0;
4192 size_t lineno;
4193 size_t group;
4195 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4196 return NULL;
4198 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4199 !parse_number(&pos, &lineno, 1, view->lines) ||
4200 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4201 return NULL;
4203 commit = get_blame_commit(view, text);
4204 if (!commit)
4205 return NULL;
4207 *blamed += group;
4208 while (group--) {
4209 struct line *line = &view->line[lineno + group - 1];
4211 blame = line->data;
4212 blame->commit = commit;
4213 blame->lineno = orig_lineno + group - 1;
4214 line->dirty = 1;
4215 }
4217 return commit;
4218 }
4220 static bool
4221 blame_read_file(struct view *view, const char *line, bool *read_file)
4222 {
4223 if (!line) {
4224 const char *blame_argv[] = {
4225 "git", "blame", "%(blameargs)", "--incremental",
4226 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4227 };
4229 if (view->lines == 0 && !view->prev)
4230 die("No blame exist for %s", view->vid);
4232 if (view->lines == 0 || !start_update(view, blame_argv, opt_cdup)) {
4233 report("Failed to load blame data");
4234 return TRUE;
4235 }
4237 *read_file = FALSE;
4238 return FALSE;
4240 } else {
4241 size_t linelen = strlen(line);
4242 struct blame *blame = malloc(sizeof(*blame) + linelen);
4244 if (!blame)
4245 return FALSE;
4247 blame->commit = NULL;
4248 strncpy(blame->text, line, linelen);
4249 blame->text[linelen] = 0;
4250 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4251 }
4252 }
4254 static bool
4255 match_blame_header(const char *name, char **line)
4256 {
4257 size_t namelen = strlen(name);
4258 bool matched = !strncmp(name, *line, namelen);
4260 if (matched)
4261 *line += namelen;
4263 return matched;
4264 }
4266 static bool
4267 blame_read(struct view *view, char *line)
4268 {
4269 static struct blame_commit *commit = NULL;
4270 static int blamed = 0;
4271 static bool read_file = TRUE;
4273 if (read_file)
4274 return blame_read_file(view, line, &read_file);
4276 if (!line) {
4277 /* Reset all! */
4278 commit = NULL;
4279 blamed = 0;
4280 read_file = TRUE;
4281 string_format(view->ref, "%s", view->vid);
4282 if (view_is_displayed(view)) {
4283 update_view_title(view);
4284 redraw_view_from(view, 0);
4285 }
4286 return TRUE;
4287 }
4289 if (!commit) {
4290 commit = parse_blame_commit(view, line, &blamed);
4291 string_format(view->ref, "%s %2d%%", view->vid,
4292 view->lines ? blamed * 100 / view->lines : 0);
4294 } else if (match_blame_header("author ", &line)) {
4295 commit->author = get_author(line);
4297 } else if (match_blame_header("author-time ", &line)) {
4298 parse_timesec(&commit->time, line);
4300 } else if (match_blame_header("author-tz ", &line)) {
4301 parse_timezone(&commit->time, line);
4303 } else if (match_blame_header("summary ", &line)) {
4304 string_ncopy(commit->title, line, strlen(line));
4306 } else if (match_blame_header("previous ", &line)) {
4307 if (strlen(line) <= SIZEOF_REV)
4308 return FALSE;
4309 string_copy_rev(commit->parent_id, line);
4310 line += SIZEOF_REV;
4311 string_ncopy(commit->parent_filename, line, strlen(line));
4313 } else if (match_blame_header("filename ", &line)) {
4314 string_ncopy(commit->filename, line, strlen(line));
4315 commit = NULL;
4316 }
4318 return TRUE;
4319 }
4321 static bool
4322 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4323 {
4324 struct blame *blame = line->data;
4325 struct time *time = NULL;
4326 const char *id = NULL, *author = NULL;
4328 if (blame->commit && *blame->commit->filename) {
4329 id = blame->commit->id;
4330 author = blame->commit->author;
4331 time = &blame->commit->time;
4332 }
4334 if (draw_date(view, time))
4335 return TRUE;
4337 if (draw_author(view, author))
4338 return TRUE;
4340 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4341 return TRUE;
4343 if (draw_lineno(view, lineno))
4344 return TRUE;
4346 draw_text(view, LINE_DEFAULT, blame->text);
4347 return TRUE;
4348 }
4350 static bool
4351 check_blame_commit(struct blame *blame, bool check_null_id)
4352 {
4353 if (!blame->commit)
4354 report("Commit data not loaded yet");
4355 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4356 report("No commit exist for the selected line");
4357 else
4358 return TRUE;
4359 return FALSE;
4360 }
4362 static void
4363 setup_blame_parent_line(struct view *view, struct blame *blame)
4364 {
4365 char from[SIZEOF_REF + SIZEOF_STR];
4366 char to[SIZEOF_REF + SIZEOF_STR];
4367 const char *diff_tree_argv[] = {
4368 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4369 "-U0", from, to, "--", NULL
4370 };
4371 struct io io;
4372 int parent_lineno = -1;
4373 int blamed_lineno = -1;
4374 char *line;
4376 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4377 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4378 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4379 return;
4381 while ((line = io_get(&io, '\n', TRUE))) {
4382 if (*line == '@') {
4383 char *pos = strchr(line, '+');
4385 parent_lineno = atoi(line + 4);
4386 if (pos)
4387 blamed_lineno = atoi(pos + 1);
4389 } else if (*line == '+' && parent_lineno != -1) {
4390 if (blame->lineno == blamed_lineno - 1 &&
4391 !strcmp(blame->text, line + 1)) {
4392 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4393 break;
4394 }
4395 blamed_lineno++;
4396 }
4397 }
4399 io_done(&io);
4400 }
4402 static enum request
4403 blame_request(struct view *view, enum request request, struct line *line)
4404 {
4405 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4406 struct blame *blame = line->data;
4408 switch (request) {
4409 case REQ_VIEW_BLAME:
4410 if (check_blame_commit(blame, TRUE)) {
4411 string_copy(opt_ref, blame->commit->id);
4412 string_copy(opt_file, blame->commit->filename);
4413 if (blame->lineno)
4414 view->lineno = blame->lineno;
4415 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4416 }
4417 break;
4419 case REQ_PARENT:
4420 if (!check_blame_commit(blame, TRUE))
4421 break;
4422 if (!*blame->commit->parent_id) {
4423 report("The selected commit has no parents");
4424 } else {
4425 string_copy_rev(opt_ref, blame->commit->parent_id);
4426 string_copy(opt_file, blame->commit->parent_filename);
4427 setup_blame_parent_line(view, blame);
4428 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4429 }
4430 break;
4432 case REQ_ENTER:
4433 if (!check_blame_commit(blame, FALSE))
4434 break;
4436 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4437 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4438 break;
4440 if (!strcmp(blame->commit->id, NULL_ID)) {
4441 struct view *diff = VIEW(REQ_VIEW_DIFF);
4442 const char *diff_index_argv[] = {
4443 "git", "diff-index", "--root", "--patch-with-stat",
4444 "-C", "-M", "HEAD", "--", view->vid, NULL
4445 };
4447 if (!*blame->commit->parent_id) {
4448 diff_index_argv[1] = "diff";
4449 diff_index_argv[2] = "--no-color";
4450 diff_index_argv[6] = "--";
4451 diff_index_argv[7] = "/dev/null";
4452 }
4454 if (!prepare_update(diff, diff_index_argv, NULL)) {
4455 report("Failed to allocate diff command");
4456 break;
4457 }
4458 flags |= OPEN_PREPARED;
4459 }
4461 open_view(view, REQ_VIEW_DIFF, flags);
4462 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4463 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4464 break;
4466 default:
4467 return request;
4468 }
4470 return REQ_NONE;
4471 }
4473 static bool
4474 blame_grep(struct view *view, struct line *line)
4475 {
4476 struct blame *blame = line->data;
4477 struct blame_commit *commit = blame->commit;
4478 const char *text[] = {
4479 blame->text,
4480 commit ? commit->title : "",
4481 commit ? commit->id : "",
4482 commit && opt_author ? commit->author : "",
4483 commit ? mkdate(&commit->time, opt_date) : "",
4484 NULL
4485 };
4487 return grep_text(view, text);
4488 }
4490 static void
4491 blame_select(struct view *view, struct line *line)
4492 {
4493 struct blame *blame = line->data;
4494 struct blame_commit *commit = blame->commit;
4496 if (!commit)
4497 return;
4499 if (!strcmp(commit->id, NULL_ID))
4500 string_ncopy(ref_commit, "HEAD", 4);
4501 else
4502 string_copy_rev(ref_commit, commit->id);
4503 }
4505 static struct view_ops blame_ops = {
4506 "line",
4507 blame_open,
4508 blame_read,
4509 blame_draw,
4510 blame_request,
4511 blame_grep,
4512 blame_select,
4513 };
4515 /*
4516 * Branch backend
4517 */
4519 struct branch {
4520 const char *author; /* Author of the last commit. */
4521 struct time time; /* Date of the last activity. */
4522 const struct ref *ref; /* Name and commit ID information. */
4523 };
4525 static const struct ref branch_all;
4527 static const enum sort_field branch_sort_fields[] = {
4528 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4529 };
4530 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4532 static int
4533 branch_compare(const void *l1, const void *l2)
4534 {
4535 const struct branch *branch1 = ((const struct line *) l1)->data;
4536 const struct branch *branch2 = ((const struct line *) l2)->data;
4538 switch (get_sort_field(branch_sort_state)) {
4539 case ORDERBY_DATE:
4540 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4542 case ORDERBY_AUTHOR:
4543 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4545 case ORDERBY_NAME:
4546 default:
4547 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4548 }
4549 }
4551 static bool
4552 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4553 {
4554 struct branch *branch = line->data;
4555 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4557 if (draw_date(view, &branch->time))
4558 return TRUE;
4560 if (draw_author(view, branch->author))
4561 return TRUE;
4563 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4564 return TRUE;
4565 }
4567 static enum request
4568 branch_request(struct view *view, enum request request, struct line *line)
4569 {
4570 struct branch *branch = line->data;
4572 switch (request) {
4573 case REQ_REFRESH:
4574 load_refs();
4575 open_view(view, REQ_VIEW_BRANCH, OPEN_REFRESH);
4576 return REQ_NONE;
4578 case REQ_TOGGLE_SORT_FIELD:
4579 case REQ_TOGGLE_SORT_ORDER:
4580 sort_view(view, request, &branch_sort_state, branch_compare);
4581 return REQ_NONE;
4583 case REQ_ENTER:
4584 {
4585 const struct ref *ref = branch->ref;
4586 const char *all_branches_argv[] = {
4587 "git", "log", "--no-color", "--pretty=raw", "--parents",
4588 "--topo-order",
4589 ref == &branch_all ? "--all" : ref->name, NULL
4590 };
4591 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4593 if (!prepare_update(main_view, all_branches_argv, NULL))
4594 report("Failed to load view of all branches");
4595 else
4596 open_view(view, REQ_VIEW_MAIN, OPEN_PREPARED | OPEN_SPLIT);
4597 return REQ_NONE;
4598 }
4599 default:
4600 return request;
4601 }
4602 }
4604 static bool
4605 branch_read(struct view *view, char *line)
4606 {
4607 static char id[SIZEOF_REV];
4608 struct branch *reference;
4609 size_t i;
4611 if (!line)
4612 return TRUE;
4614 switch (get_line_type(line)) {
4615 case LINE_COMMIT:
4616 string_copy_rev(id, line + STRING_SIZE("commit "));
4617 return TRUE;
4619 case LINE_AUTHOR:
4620 for (i = 0, reference = NULL; i < view->lines; i++) {
4621 struct branch *branch = view->line[i].data;
4623 if (strcmp(branch->ref->id, id))
4624 continue;
4626 view->line[i].dirty = TRUE;
4627 if (reference) {
4628 branch->author = reference->author;
4629 branch->time = reference->time;
4630 continue;
4631 }
4633 parse_author_line(line + STRING_SIZE("author "),
4634 &branch->author, &branch->time);
4635 reference = branch;
4636 }
4637 return TRUE;
4639 default:
4640 return TRUE;
4641 }
4643 }
4645 static bool
4646 branch_open_visitor(void *data, const struct ref *ref)
4647 {
4648 struct view *view = data;
4649 struct branch *branch;
4651 if (ref->tag || ref->ltag || ref->remote)
4652 return TRUE;
4654 branch = calloc(1, sizeof(*branch));
4655 if (!branch)
4656 return FALSE;
4658 branch->ref = ref;
4659 return !!add_line_data(view, branch, LINE_DEFAULT);
4660 }
4662 static bool
4663 branch_open(struct view *view, enum open_flags flags)
4664 {
4665 const char *branch_log[] = {
4666 "git", "log", "--no-color", "--pretty=raw",
4667 "--simplify-by-decoration", "--all", NULL
4668 };
4670 if (!start_update(view, branch_log, NULL)) {
4671 report("Failed to load branch data");
4672 return TRUE;
4673 }
4675 setup_update(view, view->id);
4676 branch_open_visitor(view, &branch_all);
4677 foreach_ref(branch_open_visitor, view);
4678 view->p_restore = TRUE;
4680 return TRUE;
4681 }
4683 static bool
4684 branch_grep(struct view *view, struct line *line)
4685 {
4686 struct branch *branch = line->data;
4687 const char *text[] = {
4688 branch->ref->name,
4689 branch->author,
4690 NULL
4691 };
4693 return grep_text(view, text);
4694 }
4696 static void
4697 branch_select(struct view *view, struct line *line)
4698 {
4699 struct branch *branch = line->data;
4701 string_copy_rev(view->ref, branch->ref->id);
4702 string_copy_rev(ref_commit, branch->ref->id);
4703 string_copy_rev(ref_head, branch->ref->id);
4704 string_copy_rev(ref_branch, branch->ref->name);
4705 }
4707 static struct view_ops branch_ops = {
4708 "branch",
4709 branch_open,
4710 branch_read,
4711 branch_draw,
4712 branch_request,
4713 branch_grep,
4714 branch_select,
4715 };
4717 /*
4718 * Status backend
4719 */
4721 struct status {
4722 char status;
4723 struct {
4724 mode_t mode;
4725 char rev[SIZEOF_REV];
4726 char name[SIZEOF_STR];
4727 } old;
4728 struct {
4729 mode_t mode;
4730 char rev[SIZEOF_REV];
4731 char name[SIZEOF_STR];
4732 } new;
4733 };
4735 static char status_onbranch[SIZEOF_STR];
4736 static struct status stage_status;
4737 static enum line_type stage_line_type;
4738 static size_t stage_chunks;
4739 static int *stage_chunk;
4741 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4743 /* This should work even for the "On branch" line. */
4744 static inline bool
4745 status_has_none(struct view *view, struct line *line)
4746 {
4747 return line < view->line + view->lines && !line[1].data;
4748 }
4750 /* Get fields from the diff line:
4751 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4752 */
4753 static inline bool
4754 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4755 {
4756 const char *old_mode = buf + 1;
4757 const char *new_mode = buf + 8;
4758 const char *old_rev = buf + 15;
4759 const char *new_rev = buf + 56;
4760 const char *status = buf + 97;
4762 if (bufsize < 98 ||
4763 old_mode[-1] != ':' ||
4764 new_mode[-1] != ' ' ||
4765 old_rev[-1] != ' ' ||
4766 new_rev[-1] != ' ' ||
4767 status[-1] != ' ')
4768 return FALSE;
4770 file->status = *status;
4772 string_copy_rev(file->old.rev, old_rev);
4773 string_copy_rev(file->new.rev, new_rev);
4775 file->old.mode = strtoul(old_mode, NULL, 8);
4776 file->new.mode = strtoul(new_mode, NULL, 8);
4778 file->old.name[0] = file->new.name[0] = 0;
4780 return TRUE;
4781 }
4783 static bool
4784 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4785 {
4786 struct status *unmerged = NULL;
4787 char *buf;
4788 struct io io;
4790 if (!io_run(&io, IO_RD, opt_cdup, argv))
4791 return FALSE;
4793 add_line_data(view, NULL, type);
4795 while ((buf = io_get(&io, 0, TRUE))) {
4796 struct status *file = unmerged;
4798 if (!file) {
4799 file = calloc(1, sizeof(*file));
4800 if (!file || !add_line_data(view, file, type))
4801 goto error_out;
4802 }
4804 /* Parse diff info part. */
4805 if (status) {
4806 file->status = status;
4807 if (status == 'A')
4808 string_copy(file->old.rev, NULL_ID);
4810 } else if (!file->status || file == unmerged) {
4811 if (!status_get_diff(file, buf, strlen(buf)))
4812 goto error_out;
4814 buf = io_get(&io, 0, TRUE);
4815 if (!buf)
4816 break;
4818 /* Collapse all modified entries that follow an
4819 * associated unmerged entry. */
4820 if (unmerged == file) {
4821 unmerged->status = 'U';
4822 unmerged = NULL;
4823 } else if (file->status == 'U') {
4824 unmerged = file;
4825 }
4826 }
4828 /* Grab the old name for rename/copy. */
4829 if (!*file->old.name &&
4830 (file->status == 'R' || file->status == 'C')) {
4831 string_ncopy(file->old.name, buf, strlen(buf));
4833 buf = io_get(&io, 0, TRUE);
4834 if (!buf)
4835 break;
4836 }
4838 /* git-ls-files just delivers a NUL separated list of
4839 * file names similar to the second half of the
4840 * git-diff-* output. */
4841 string_ncopy(file->new.name, buf, strlen(buf));
4842 if (!*file->old.name)
4843 string_copy(file->old.name, file->new.name);
4844 file = NULL;
4845 }
4847 if (io_error(&io)) {
4848 error_out:
4849 io_done(&io);
4850 return FALSE;
4851 }
4853 if (!view->line[view->lines - 1].data)
4854 add_line_data(view, NULL, LINE_STAT_NONE);
4856 io_done(&io);
4857 return TRUE;
4858 }
4860 /* Don't show unmerged entries in the staged section. */
4861 static const char *status_diff_index_argv[] = {
4862 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4863 "--cached", "-M", "HEAD", NULL
4864 };
4866 static const char *status_diff_files_argv[] = {
4867 "git", "diff-files", "-z", NULL
4868 };
4870 static const char *status_list_other_argv[] = {
4871 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4872 };
4874 static const char *status_list_no_head_argv[] = {
4875 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4876 };
4878 static const char *update_index_argv[] = {
4879 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4880 };
4882 /* Restore the previous line number to stay in the context or select a
4883 * line with something that can be updated. */
4884 static void
4885 status_restore(struct view *view)
4886 {
4887 if (view->p_lineno >= view->lines)
4888 view->p_lineno = view->lines - 1;
4889 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4890 view->p_lineno++;
4891 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4892 view->p_lineno--;
4894 /* If the above fails, always skip the "On branch" line. */
4895 if (view->p_lineno < view->lines)
4896 view->lineno = view->p_lineno;
4897 else
4898 view->lineno = 1;
4900 if (view->lineno < view->offset)
4901 view->offset = view->lineno;
4902 else if (view->offset + view->height <= view->lineno)
4903 view->offset = view->lineno - view->height + 1;
4905 view->p_restore = FALSE;
4906 }
4908 static void
4909 status_update_onbranch(void)
4910 {
4911 static const char *paths[][2] = {
4912 { "rebase-apply/rebasing", "Rebasing" },
4913 { "rebase-apply/applying", "Applying mailbox" },
4914 { "rebase-apply/", "Rebasing mailbox" },
4915 { "rebase-merge/interactive", "Interactive rebase" },
4916 { "rebase-merge/", "Rebase merge" },
4917 { "MERGE_HEAD", "Merging" },
4918 { "BISECT_LOG", "Bisecting" },
4919 { "HEAD", "On branch" },
4920 };
4921 char buf[SIZEOF_STR];
4922 struct stat stat;
4923 int i;
4925 if (is_initial_commit()) {
4926 string_copy(status_onbranch, "Initial commit");
4927 return;
4928 }
4930 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4931 char *head = opt_head;
4933 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4934 lstat(buf, &stat) < 0)
4935 continue;
4937 if (!*opt_head) {
4938 struct io io;
4940 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4941 io_read_buf(&io, buf, sizeof(buf))) {
4942 head = buf;
4943 if (!prefixcmp(head, "refs/heads/"))
4944 head += STRING_SIZE("refs/heads/");
4945 }
4946 }
4948 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4949 string_copy(status_onbranch, opt_head);
4950 return;
4951 }
4953 string_copy(status_onbranch, "Not currently on any branch");
4954 }
4956 /* First parse staged info using git-diff-index(1), then parse unstaged
4957 * info using git-diff-files(1), and finally untracked files using
4958 * git-ls-files(1). */
4959 static bool
4960 status_open(struct view *view, enum open_flags flags)
4961 {
4962 reset_view(view);
4964 add_line_data(view, NULL, LINE_STAT_HEAD);
4965 status_update_onbranch();
4967 io_run_bg(update_index_argv);
4969 if (is_initial_commit()) {
4970 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4971 return FALSE;
4972 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4973 return FALSE;
4974 }
4976 if (!opt_untracked_dirs_content)
4977 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
4979 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4980 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4981 return FALSE;
4983 /* Restore the exact position or use the specialized restore
4984 * mode? */
4985 if (!view->p_restore)
4986 status_restore(view);
4987 return TRUE;
4988 }
4990 static bool
4991 status_draw(struct view *view, struct line *line, unsigned int lineno)
4992 {
4993 struct status *status = line->data;
4994 enum line_type type;
4995 const char *text;
4997 if (!status) {
4998 switch (line->type) {
4999 case LINE_STAT_STAGED:
5000 type = LINE_STAT_SECTION;
5001 text = "Changes to be committed:";
5002 break;
5004 case LINE_STAT_UNSTAGED:
5005 type = LINE_STAT_SECTION;
5006 text = "Changed but not updated:";
5007 break;
5009 case LINE_STAT_UNTRACKED:
5010 type = LINE_STAT_SECTION;
5011 text = "Untracked files:";
5012 break;
5014 case LINE_STAT_NONE:
5015 type = LINE_DEFAULT;
5016 text = " (no files)";
5017 break;
5019 case LINE_STAT_HEAD:
5020 type = LINE_STAT_HEAD;
5021 text = status_onbranch;
5022 break;
5024 default:
5025 return FALSE;
5026 }
5027 } else {
5028 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5030 buf[0] = status->status;
5031 if (draw_text(view, line->type, buf))
5032 return TRUE;
5033 type = LINE_DEFAULT;
5034 text = status->new.name;
5035 }
5037 draw_text(view, type, text);
5038 return TRUE;
5039 }
5041 static enum request
5042 status_load_error(struct view *view, struct view *stage, const char *path)
5043 {
5044 if (displayed_views() == 2 || display[current_view] != view)
5045 maximize_view(view);
5046 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
5047 return REQ_NONE;
5048 }
5050 static enum request
5051 status_enter(struct view *view, struct line *line)
5052 {
5053 struct status *status = line->data;
5054 const char *oldpath = status ? status->old.name : NULL;
5055 /* Diffs for unmerged entries are empty when passing the new
5056 * path, so leave it empty. */
5057 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5058 const char *info;
5059 enum open_flags split;
5060 struct view *stage = VIEW(REQ_VIEW_STAGE);
5062 if (line->type == LINE_STAT_NONE ||
5063 (!status && line[1].type == LINE_STAT_NONE)) {
5064 report("No file to diff");
5065 return REQ_NONE;
5066 }
5068 switch (line->type) {
5069 case LINE_STAT_STAGED:
5070 if (is_initial_commit()) {
5071 const char *no_head_diff_argv[] = {
5072 "git", "diff", "--no-color", "--patch-with-stat",
5073 "--", "/dev/null", newpath, NULL
5074 };
5076 if (!prepare_update(stage, no_head_diff_argv, opt_cdup))
5077 return status_load_error(view, stage, newpath);
5078 } else {
5079 const char *index_show_argv[] = {
5080 "git", "diff-index", "--root", "--patch-with-stat",
5081 "-C", "-M", "--cached", "HEAD", "--",
5082 oldpath, newpath, NULL
5083 };
5085 if (!prepare_update(stage, index_show_argv, opt_cdup))
5086 return status_load_error(view, stage, newpath);
5087 }
5089 if (status)
5090 info = "Staged changes to %s";
5091 else
5092 info = "Staged changes";
5093 break;
5095 case LINE_STAT_UNSTAGED:
5096 {
5097 const char *files_show_argv[] = {
5098 "git", "diff-files", "--root", "--patch-with-stat",
5099 "-C", "-M", "--", oldpath, newpath, NULL
5100 };
5102 if (!prepare_update(stage, files_show_argv, opt_cdup))
5103 return status_load_error(view, stage, newpath);
5104 if (status)
5105 info = "Unstaged changes to %s";
5106 else
5107 info = "Unstaged changes";
5108 break;
5109 }
5110 case LINE_STAT_UNTRACKED:
5111 if (!newpath) {
5112 report("No file to show");
5113 return REQ_NONE;
5114 }
5116 if (!suffixcmp(status->new.name, -1, "/")) {
5117 report("Cannot display a directory");
5118 return REQ_NONE;
5119 }
5121 if (!prepare_update_file(stage, newpath))
5122 return status_load_error(view, stage, newpath);
5123 info = "Untracked file %s";
5124 break;
5126 case LINE_STAT_HEAD:
5127 return REQ_NONE;
5129 default:
5130 die("line type %d not handled in switch", line->type);
5131 }
5133 split = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5134 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5135 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5136 if (status) {
5137 stage_status = *status;
5138 } else {
5139 memset(&stage_status, 0, sizeof(stage_status));
5140 }
5142 stage_line_type = line->type;
5143 stage_chunks = 0;
5144 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5145 }
5147 return REQ_NONE;
5148 }
5150 static bool
5151 status_exists(struct status *status, enum line_type type)
5152 {
5153 struct view *view = VIEW(REQ_VIEW_STATUS);
5154 unsigned long lineno;
5156 for (lineno = 0; lineno < view->lines; lineno++) {
5157 struct line *line = &view->line[lineno];
5158 struct status *pos = line->data;
5160 if (line->type != type)
5161 continue;
5162 if (!pos && (!status || !status->status) && line[1].data) {
5163 select_view_line(view, lineno);
5164 return TRUE;
5165 }
5166 if (pos && !strcmp(status->new.name, pos->new.name)) {
5167 select_view_line(view, lineno);
5168 return TRUE;
5169 }
5170 }
5172 return FALSE;
5173 }
5176 static bool
5177 status_update_prepare(struct io *io, enum line_type type)
5178 {
5179 const char *staged_argv[] = {
5180 "git", "update-index", "-z", "--index-info", NULL
5181 };
5182 const char *others_argv[] = {
5183 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5184 };
5186 switch (type) {
5187 case LINE_STAT_STAGED:
5188 return io_run(io, IO_WR, opt_cdup, staged_argv);
5190 case LINE_STAT_UNSTAGED:
5191 case LINE_STAT_UNTRACKED:
5192 return io_run(io, IO_WR, opt_cdup, others_argv);
5194 default:
5195 die("line type %d not handled in switch", type);
5196 return FALSE;
5197 }
5198 }
5200 static bool
5201 status_update_write(struct io *io, struct status *status, enum line_type type)
5202 {
5203 char buf[SIZEOF_STR];
5204 size_t bufsize = 0;
5206 switch (type) {
5207 case LINE_STAT_STAGED:
5208 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5209 status->old.mode,
5210 status->old.rev,
5211 status->old.name, 0))
5212 return FALSE;
5213 break;
5215 case LINE_STAT_UNSTAGED:
5216 case LINE_STAT_UNTRACKED:
5217 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5218 return FALSE;
5219 break;
5221 default:
5222 die("line type %d not handled in switch", type);
5223 }
5225 return io_write(io, buf, bufsize);
5226 }
5228 static bool
5229 status_update_file(struct status *status, enum line_type type)
5230 {
5231 struct io io;
5232 bool result;
5234 if (!status_update_prepare(&io, type))
5235 return FALSE;
5237 result = status_update_write(&io, status, type);
5238 return io_done(&io) && result;
5239 }
5241 static bool
5242 status_update_files(struct view *view, struct line *line)
5243 {
5244 char buf[sizeof(view->ref)];
5245 struct io io;
5246 bool result = TRUE;
5247 struct line *pos = view->line + view->lines;
5248 int files = 0;
5249 int file, done;
5250 int cursor_y = -1, cursor_x = -1;
5252 if (!status_update_prepare(&io, line->type))
5253 return FALSE;
5255 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5256 files++;
5258 string_copy(buf, view->ref);
5259 getsyx(cursor_y, cursor_x);
5260 for (file = 0, done = 5; result && file < files; line++, file++) {
5261 int almost_done = file * 100 / files;
5263 if (almost_done > done) {
5264 done = almost_done;
5265 string_format(view->ref, "updating file %u of %u (%d%% done)",
5266 file, files, done);
5267 update_view_title(view);
5268 setsyx(cursor_y, cursor_x);
5269 doupdate();
5270 }
5271 result = status_update_write(&io, line->data, line->type);
5272 }
5273 string_copy(view->ref, buf);
5275 return io_done(&io) && result;
5276 }
5278 static bool
5279 status_update(struct view *view)
5280 {
5281 struct line *line = &view->line[view->lineno];
5283 assert(view->lines);
5285 if (!line->data) {
5286 /* This should work even for the "On branch" line. */
5287 if (line < view->line + view->lines && !line[1].data) {
5288 report("Nothing to update");
5289 return FALSE;
5290 }
5292 if (!status_update_files(view, line + 1)) {
5293 report("Failed to update file status");
5294 return FALSE;
5295 }
5297 } else if (!status_update_file(line->data, line->type)) {
5298 report("Failed to update file status");
5299 return FALSE;
5300 }
5302 return TRUE;
5303 }
5305 static bool
5306 status_revert(struct status *status, enum line_type type, bool has_none)
5307 {
5308 if (!status || type != LINE_STAT_UNSTAGED) {
5309 if (type == LINE_STAT_STAGED) {
5310 report("Cannot revert changes to staged files");
5311 } else if (type == LINE_STAT_UNTRACKED) {
5312 report("Cannot revert changes to untracked files");
5313 } else if (has_none) {
5314 report("Nothing to revert");
5315 } else {
5316 report("Cannot revert changes to multiple files");
5317 }
5319 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5320 char mode[10] = "100644";
5321 const char *reset_argv[] = {
5322 "git", "update-index", "--cacheinfo", mode,
5323 status->old.rev, status->old.name, NULL
5324 };
5325 const char *checkout_argv[] = {
5326 "git", "checkout", "--", status->old.name, NULL
5327 };
5329 if (status->status == 'U') {
5330 string_format(mode, "%5o", status->old.mode);
5332 if (status->old.mode == 0 && status->new.mode == 0) {
5333 reset_argv[2] = "--force-remove";
5334 reset_argv[3] = status->old.name;
5335 reset_argv[4] = NULL;
5336 }
5338 if (!io_run_fg(reset_argv, opt_cdup))
5339 return FALSE;
5340 if (status->old.mode == 0 && status->new.mode == 0)
5341 return TRUE;
5342 }
5344 return io_run_fg(checkout_argv, opt_cdup);
5345 }
5347 return FALSE;
5348 }
5350 static enum request
5351 status_request(struct view *view, enum request request, struct line *line)
5352 {
5353 struct status *status = line->data;
5355 switch (request) {
5356 case REQ_STATUS_UPDATE:
5357 if (!status_update(view))
5358 return REQ_NONE;
5359 break;
5361 case REQ_STATUS_REVERT:
5362 if (!status_revert(status, line->type, status_has_none(view, line)))
5363 return REQ_NONE;
5364 break;
5366 case REQ_STATUS_MERGE:
5367 if (!status || status->status != 'U') {
5368 report("Merging only possible for files with unmerged status ('U').");
5369 return REQ_NONE;
5370 }
5371 open_mergetool(status->new.name);
5372 break;
5374 case REQ_EDIT:
5375 if (!status)
5376 return request;
5377 if (status->status == 'D') {
5378 report("File has been deleted.");
5379 return REQ_NONE;
5380 }
5382 open_editor(status->new.name);
5383 break;
5385 case REQ_VIEW_BLAME:
5386 if (status)
5387 opt_ref[0] = 0;
5388 return request;
5390 case REQ_ENTER:
5391 /* After returning the status view has been split to
5392 * show the stage view. No further reloading is
5393 * necessary. */
5394 return status_enter(view, line);
5396 case REQ_REFRESH:
5397 /* Simply reload the view. */
5398 break;
5400 default:
5401 return request;
5402 }
5404 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
5406 return REQ_NONE;
5407 }
5409 static void
5410 status_select(struct view *view, struct line *line)
5411 {
5412 struct status *status = line->data;
5413 char file[SIZEOF_STR] = "all files";
5414 const char *text;
5415 const char *key;
5417 if (status && !string_format(file, "'%s'", status->new.name))
5418 return;
5420 if (!status && line[1].type == LINE_STAT_NONE)
5421 line++;
5423 switch (line->type) {
5424 case LINE_STAT_STAGED:
5425 text = "Press %s to unstage %s for commit";
5426 break;
5428 case LINE_STAT_UNSTAGED:
5429 text = "Press %s to stage %s for commit";
5430 break;
5432 case LINE_STAT_UNTRACKED:
5433 text = "Press %s to stage %s for addition";
5434 break;
5436 case LINE_STAT_HEAD:
5437 case LINE_STAT_NONE:
5438 text = "Nothing to update";
5439 break;
5441 default:
5442 die("line type %d not handled in switch", line->type);
5443 }
5445 if (status && status->status == 'U') {
5446 text = "Press %s to resolve conflict in %s";
5447 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5449 } else {
5450 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5451 }
5453 string_format(view->ref, text, key, file);
5454 if (status)
5455 string_copy(opt_file, status->new.name);
5456 }
5458 static bool
5459 status_grep(struct view *view, struct line *line)
5460 {
5461 struct status *status = line->data;
5463 if (status) {
5464 const char buf[2] = { status->status, 0 };
5465 const char *text[] = { status->new.name, buf, NULL };
5467 return grep_text(view, text);
5468 }
5470 return FALSE;
5471 }
5473 static struct view_ops status_ops = {
5474 "file",
5475 status_open,
5476 NULL,
5477 status_draw,
5478 status_request,
5479 status_grep,
5480 status_select,
5481 };
5484 static bool
5485 stage_diff_write(struct io *io, struct line *line, struct line *end)
5486 {
5487 while (line < end) {
5488 if (!io_write(io, line->data, strlen(line->data)) ||
5489 !io_write(io, "\n", 1))
5490 return FALSE;
5491 line++;
5492 if (line->type == LINE_DIFF_CHUNK ||
5493 line->type == LINE_DIFF_HEADER)
5494 break;
5495 }
5497 return TRUE;
5498 }
5500 static struct line *
5501 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5502 {
5503 for (; view->line < line; line--)
5504 if (line->type == type)
5505 return line;
5507 return NULL;
5508 }
5510 static bool
5511 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5512 {
5513 const char *apply_argv[SIZEOF_ARG] = {
5514 "git", "apply", "--whitespace=nowarn", NULL
5515 };
5516 struct line *diff_hdr;
5517 struct io io;
5518 int argc = 3;
5520 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5521 if (!diff_hdr)
5522 return FALSE;
5524 if (!revert)
5525 apply_argv[argc++] = "--cached";
5526 if (revert || stage_line_type == LINE_STAT_STAGED)
5527 apply_argv[argc++] = "-R";
5528 apply_argv[argc++] = "-";
5529 apply_argv[argc++] = NULL;
5530 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5531 return FALSE;
5533 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5534 !stage_diff_write(&io, chunk, view->line + view->lines))
5535 chunk = NULL;
5537 io_done(&io);
5538 io_run_bg(update_index_argv);
5540 return chunk ? TRUE : FALSE;
5541 }
5543 static bool
5544 stage_update(struct view *view, struct line *line)
5545 {
5546 struct line *chunk = NULL;
5548 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5549 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5551 if (chunk) {
5552 if (!stage_apply_chunk(view, chunk, FALSE)) {
5553 report("Failed to apply chunk");
5554 return FALSE;
5555 }
5557 } else if (!stage_status.status) {
5558 view = VIEW(REQ_VIEW_STATUS);
5560 for (line = view->line; line < view->line + view->lines; line++)
5561 if (line->type == stage_line_type)
5562 break;
5564 if (!status_update_files(view, line + 1)) {
5565 report("Failed to update files");
5566 return FALSE;
5567 }
5569 } else if (!status_update_file(&stage_status, stage_line_type)) {
5570 report("Failed to update file");
5571 return FALSE;
5572 }
5574 return TRUE;
5575 }
5577 static bool
5578 stage_revert(struct view *view, struct line *line)
5579 {
5580 struct line *chunk = NULL;
5582 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5583 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5585 if (chunk) {
5586 if (!prompt_yesno("Are you sure you want to revert changes?"))
5587 return FALSE;
5589 if (!stage_apply_chunk(view, chunk, TRUE)) {
5590 report("Failed to revert chunk");
5591 return FALSE;
5592 }
5593 return TRUE;
5595 } else {
5596 return status_revert(stage_status.status ? &stage_status : NULL,
5597 stage_line_type, FALSE);
5598 }
5599 }
5602 static void
5603 stage_next(struct view *view, struct line *line)
5604 {
5605 int i;
5607 if (!stage_chunks) {
5608 for (line = view->line; line < view->line + view->lines; line++) {
5609 if (line->type != LINE_DIFF_CHUNK)
5610 continue;
5612 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5613 report("Allocation failure");
5614 return;
5615 }
5617 stage_chunk[stage_chunks++] = line - view->line;
5618 }
5619 }
5621 for (i = 0; i < stage_chunks; i++) {
5622 if (stage_chunk[i] > view->lineno) {
5623 do_scroll_view(view, stage_chunk[i] - view->lineno);
5624 report("Chunk %d of %d", i + 1, stage_chunks);
5625 return;
5626 }
5627 }
5629 report("No next chunk found");
5630 }
5632 static enum request
5633 stage_request(struct view *view, enum request request, struct line *line)
5634 {
5635 switch (request) {
5636 case REQ_STATUS_UPDATE:
5637 if (!stage_update(view, line))
5638 return REQ_NONE;
5639 break;
5641 case REQ_STATUS_REVERT:
5642 if (!stage_revert(view, line))
5643 return REQ_NONE;
5644 break;
5646 case REQ_STAGE_NEXT:
5647 if (stage_line_type == LINE_STAT_UNTRACKED) {
5648 report("File is untracked; press %s to add",
5649 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5650 return REQ_NONE;
5651 }
5652 stage_next(view, line);
5653 return REQ_NONE;
5655 case REQ_EDIT:
5656 if (!stage_status.new.name[0])
5657 return request;
5658 if (stage_status.status == 'D') {
5659 report("File has been deleted.");
5660 return REQ_NONE;
5661 }
5663 open_editor(stage_status.new.name);
5664 break;
5666 case REQ_REFRESH:
5667 /* Reload everything ... */
5668 break;
5670 case REQ_VIEW_BLAME:
5671 if (stage_status.new.name[0]) {
5672 string_copy(opt_file, stage_status.new.name);
5673 opt_ref[0] = 0;
5674 }
5675 return request;
5677 case REQ_ENTER:
5678 return pager_request(view, request, line);
5680 default:
5681 return request;
5682 }
5684 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5685 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
5687 /* Check whether the staged entry still exists, and close the
5688 * stage view if it doesn't. */
5689 if (!status_exists(&stage_status, stage_line_type)) {
5690 status_restore(VIEW(REQ_VIEW_STATUS));
5691 return REQ_VIEW_CLOSE;
5692 }
5694 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5696 return REQ_NONE;
5697 }
5699 static struct view_ops stage_ops = {
5700 "line",
5701 view_open,
5702 pager_read,
5703 pager_draw,
5704 stage_request,
5705 pager_grep,
5706 pager_select,
5707 };
5710 /*
5711 * Revision graph
5712 */
5714 static const enum line_type graph_colors[] = {
5715 LINE_GRAPH_LINE_0,
5716 LINE_GRAPH_LINE_1,
5717 LINE_GRAPH_LINE_2,
5718 LINE_GRAPH_LINE_3,
5719 LINE_GRAPH_LINE_4,
5720 LINE_GRAPH_LINE_5,
5721 LINE_GRAPH_LINE_6,
5722 };
5724 static enum line_type get_graph_color(struct graph_symbol *symbol)
5725 {
5726 if (symbol->commit)
5727 return LINE_GRAPH_COMMIT;
5728 assert(symbol->color < ARRAY_SIZE(graph_colors));
5729 return graph_colors[symbol->color];
5730 }
5732 static bool
5733 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5734 {
5735 const char *chars = graph_symbol_to_utf8(symbol);
5737 return draw_text(view, color, chars + !!first);
5738 }
5740 static bool
5741 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5742 {
5743 const char *chars = graph_symbol_to_ascii(symbol);
5745 return draw_text(view, color, chars + !!first);
5746 }
5748 static bool
5749 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5750 {
5751 const chtype *chars = graph_symbol_to_chtype(symbol);
5753 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5754 }
5756 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5758 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5759 {
5760 static const draw_graph_fn fns[] = {
5761 draw_graph_ascii,
5762 draw_graph_chtype,
5763 draw_graph_utf8
5764 };
5765 draw_graph_fn fn = fns[opt_line_graphics];
5766 int i;
5768 for (i = 0; i < canvas->size; i++) {
5769 struct graph_symbol *symbol = &canvas->symbols[i];
5770 enum line_type color = get_graph_color(symbol);
5772 if (fn(view, symbol, color, i == 0))
5773 return TRUE;
5774 }
5776 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5777 }
5779 /*
5780 * Main view backend
5781 */
5783 struct commit {
5784 char id[SIZEOF_REV]; /* SHA1 ID. */
5785 char title[128]; /* First line of the commit message. */
5786 const char *author; /* Author of the commit. */
5787 struct time time; /* Date from the author ident. */
5788 struct ref_list *refs; /* Repository references. */
5789 struct graph_canvas graph; /* Ancestry chain graphics. */
5790 };
5792 static bool
5793 main_open(struct view *view, enum open_flags flags)
5794 {
5795 static const char *main_argv[] = {
5796 "git", "log", "--no-color", "--pretty=raw", "--parents",
5797 "--topo-order", "%(diffargs)", "%(revargs)",
5798 "--", "%(fileargs)", NULL
5799 };
5801 return begin_update(view, NULL, main_argv, flags);
5802 }
5804 static bool
5805 main_draw(struct view *view, struct line *line, unsigned int lineno)
5806 {
5807 struct commit *commit = line->data;
5809 if (!commit->author)
5810 return FALSE;
5812 if (draw_date(view, &commit->time))
5813 return TRUE;
5815 if (draw_author(view, commit->author))
5816 return TRUE;
5818 if (opt_rev_graph && draw_graph(view, &commit->graph))
5819 return TRUE;
5821 if (opt_show_refs && commit->refs) {
5822 size_t i;
5824 for (i = 0; i < commit->refs->size; i++) {
5825 struct ref *ref = commit->refs->refs[i];
5826 enum line_type type;
5828 if (ref->head)
5829 type = LINE_MAIN_HEAD;
5830 else if (ref->ltag)
5831 type = LINE_MAIN_LOCAL_TAG;
5832 else if (ref->tag)
5833 type = LINE_MAIN_TAG;
5834 else if (ref->tracked)
5835 type = LINE_MAIN_TRACKED;
5836 else if (ref->remote)
5837 type = LINE_MAIN_REMOTE;
5838 else
5839 type = LINE_MAIN_REF;
5841 if (draw_text(view, type, "[") ||
5842 draw_text(view, type, ref->name) ||
5843 draw_text(view, type, "]"))
5844 return TRUE;
5846 if (draw_text(view, LINE_DEFAULT, " "))
5847 return TRUE;
5848 }
5849 }
5851 draw_text(view, LINE_DEFAULT, commit->title);
5852 return TRUE;
5853 }
5855 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5856 static bool
5857 main_read(struct view *view, char *line)
5858 {
5859 static struct graph graph;
5860 enum line_type type;
5861 struct commit *commit;
5863 if (!line) {
5864 if (!view->lines && !view->prev)
5865 die("No revisions match the given arguments.");
5866 if (view->lines > 0) {
5867 commit = view->line[view->lines - 1].data;
5868 view->line[view->lines - 1].dirty = 1;
5869 if (!commit->author) {
5870 view->lines--;
5871 free(commit);
5872 }
5873 }
5875 done_graph(&graph);
5876 return TRUE;
5877 }
5879 type = get_line_type(line);
5880 if (type == LINE_COMMIT) {
5881 bool is_boundary;
5883 commit = calloc(1, sizeof(struct commit));
5884 if (!commit)
5885 return FALSE;
5887 line += STRING_SIZE("commit ");
5888 is_boundary = *line == '-';
5889 if (is_boundary)
5890 line++;
5892 string_copy_rev(commit->id, line);
5893 commit->refs = get_ref_list(commit->id);
5894 add_line_data(view, commit, LINE_MAIN_COMMIT);
5895 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5896 return TRUE;
5897 }
5899 if (!view->lines)
5900 return TRUE;
5901 commit = view->line[view->lines - 1].data;
5903 switch (type) {
5904 case LINE_PARENT:
5905 if (!graph.has_parents)
5906 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5907 break;
5909 case LINE_AUTHOR:
5910 parse_author_line(line + STRING_SIZE("author "),
5911 &commit->author, &commit->time);
5912 graph_render_parents(&graph);
5913 break;
5915 default:
5916 /* Fill in the commit title if it has not already been set. */
5917 if (commit->title[0])
5918 break;
5920 /* Require titles to start with a non-space character at the
5921 * offset used by git log. */
5922 if (strncmp(line, " ", 4))
5923 break;
5924 line += 4;
5925 /* Well, if the title starts with a whitespace character,
5926 * try to be forgiving. Otherwise we end up with no title. */
5927 while (isspace(*line))
5928 line++;
5929 if (*line == '\0')
5930 break;
5931 /* FIXME: More graceful handling of titles; append "..." to
5932 * shortened titles, etc. */
5934 string_expand(commit->title, sizeof(commit->title), line, 1);
5935 view->line[view->lines - 1].dirty = 1;
5936 }
5938 return TRUE;
5939 }
5941 static enum request
5942 main_request(struct view *view, enum request request, struct line *line)
5943 {
5944 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5946 switch (request) {
5947 case REQ_ENTER:
5948 if (view_is_displayed(view) && display[0] != view)
5949 maximize_view(view);
5950 open_view(view, REQ_VIEW_DIFF, flags);
5951 break;
5952 case REQ_REFRESH:
5953 load_refs();
5954 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5955 break;
5956 default:
5957 return request;
5958 }
5960 return REQ_NONE;
5961 }
5963 static bool
5964 grep_refs(struct ref_list *list, regex_t *regex)
5965 {
5966 regmatch_t pmatch;
5967 size_t i;
5969 if (!opt_show_refs || !list)
5970 return FALSE;
5972 for (i = 0; i < list->size; i++) {
5973 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5974 return TRUE;
5975 }
5977 return FALSE;
5978 }
5980 static bool
5981 main_grep(struct view *view, struct line *line)
5982 {
5983 struct commit *commit = line->data;
5984 const char *text[] = {
5985 commit->title,
5986 opt_author ? commit->author : "",
5987 mkdate(&commit->time, opt_date),
5988 NULL
5989 };
5991 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5992 }
5994 static void
5995 main_select(struct view *view, struct line *line)
5996 {
5997 struct commit *commit = line->data;
5999 string_copy_rev(view->ref, commit->id);
6000 string_copy_rev(ref_commit, view->ref);
6001 }
6003 static struct view_ops main_ops = {
6004 "commit",
6005 main_open,
6006 main_read,
6007 main_draw,
6008 main_request,
6009 main_grep,
6010 main_select,
6011 };
6014 /*
6015 * Status management
6016 */
6018 /* Whether or not the curses interface has been initialized. */
6019 static bool cursed = FALSE;
6021 /* Terminal hacks and workarounds. */
6022 static bool use_scroll_redrawwin;
6023 static bool use_scroll_status_wclear;
6025 /* The status window is used for polling keystrokes. */
6026 static WINDOW *status_win;
6028 /* Reading from the prompt? */
6029 static bool input_mode = FALSE;
6031 static bool status_empty = FALSE;
6033 /* Update status and title window. */
6034 static void
6035 report(const char *msg, ...)
6036 {
6037 struct view *view = display[current_view];
6039 if (input_mode)
6040 return;
6042 if (!view) {
6043 char buf[SIZEOF_STR];
6044 va_list args;
6046 va_start(args, msg);
6047 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6048 buf[sizeof(buf) - 1] = 0;
6049 buf[sizeof(buf) - 2] = '.';
6050 buf[sizeof(buf) - 3] = '.';
6051 buf[sizeof(buf) - 4] = '.';
6052 }
6053 va_end(args);
6054 die("%s", buf);
6055 }
6057 if (!status_empty || *msg) {
6058 va_list args;
6060 va_start(args, msg);
6062 wmove(status_win, 0, 0);
6063 if (view->has_scrolled && use_scroll_status_wclear)
6064 wclear(status_win);
6065 if (*msg) {
6066 vwprintw(status_win, msg, args);
6067 status_empty = FALSE;
6068 } else {
6069 status_empty = TRUE;
6070 }
6071 wclrtoeol(status_win);
6072 wnoutrefresh(status_win);
6074 va_end(args);
6075 }
6077 update_view_title(view);
6078 }
6080 static void
6081 init_display(void)
6082 {
6083 const char *term;
6084 int x, y;
6086 /* Initialize the curses library */
6087 if (isatty(STDIN_FILENO)) {
6088 cursed = !!initscr();
6089 opt_tty = stdin;
6090 } else {
6091 /* Leave stdin and stdout alone when acting as a pager. */
6092 opt_tty = fopen("/dev/tty", "r+");
6093 if (!opt_tty)
6094 die("Failed to open /dev/tty");
6095 cursed = !!newterm(NULL, opt_tty, opt_tty);
6096 }
6098 if (!cursed)
6099 die("Failed to initialize curses");
6101 nonl(); /* Disable conversion and detect newlines from input. */
6102 cbreak(); /* Take input chars one at a time, no wait for \n */
6103 noecho(); /* Don't echo input */
6104 leaveok(stdscr, FALSE);
6106 if (has_colors())
6107 init_colors();
6109 getmaxyx(stdscr, y, x);
6110 status_win = newwin(1, x, y - 1, 0);
6111 if (!status_win)
6112 die("Failed to create status window");
6114 /* Enable keyboard mapping */
6115 keypad(status_win, TRUE);
6116 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6118 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6119 set_tabsize(opt_tab_size);
6120 #else
6121 TABSIZE = opt_tab_size;
6122 #endif
6124 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6125 if (term && !strcmp(term, "gnome-terminal")) {
6126 /* In the gnome-terminal-emulator, the message from
6127 * scrolling up one line when impossible followed by
6128 * scrolling down one line causes corruption of the
6129 * status line. This is fixed by calling wclear. */
6130 use_scroll_status_wclear = TRUE;
6131 use_scroll_redrawwin = FALSE;
6133 } else if (term && !strcmp(term, "xrvt-xpm")) {
6134 /* No problems with full optimizations in xrvt-(unicode)
6135 * and aterm. */
6136 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6138 } else {
6139 /* When scrolling in (u)xterm the last line in the
6140 * scrolling direction will update slowly. */
6141 use_scroll_redrawwin = TRUE;
6142 use_scroll_status_wclear = FALSE;
6143 }
6144 }
6146 static int
6147 get_input(int prompt_position)
6148 {
6149 struct view *view;
6150 int i, key, cursor_y, cursor_x;
6152 if (prompt_position)
6153 input_mode = TRUE;
6155 while (TRUE) {
6156 bool loading = FALSE;
6158 foreach_view (view, i) {
6159 update_view(view);
6160 if (view_is_displayed(view) && view->has_scrolled &&
6161 use_scroll_redrawwin)
6162 redrawwin(view->win);
6163 view->has_scrolled = FALSE;
6164 if (view->pipe)
6165 loading = TRUE;
6166 }
6168 /* Update the cursor position. */
6169 if (prompt_position) {
6170 getbegyx(status_win, cursor_y, cursor_x);
6171 cursor_x = prompt_position;
6172 } else {
6173 view = display[current_view];
6174 getbegyx(view->win, cursor_y, cursor_x);
6175 cursor_x = view->width - 1;
6176 cursor_y += view->lineno - view->offset;
6177 }
6178 setsyx(cursor_y, cursor_x);
6180 /* Refresh, accept single keystroke of input */
6181 doupdate();
6182 nodelay(status_win, loading);
6183 key = wgetch(status_win);
6185 /* wgetch() with nodelay() enabled returns ERR when
6186 * there's no input. */
6187 if (key == ERR) {
6189 } else if (key == KEY_RESIZE) {
6190 int height, width;
6192 getmaxyx(stdscr, height, width);
6194 wresize(status_win, 1, width);
6195 mvwin(status_win, height - 1, 0);
6196 wnoutrefresh(status_win);
6197 resize_display();
6198 redraw_display(TRUE);
6200 } else {
6201 input_mode = FALSE;
6202 return key;
6203 }
6204 }
6205 }
6207 static char *
6208 prompt_input(const char *prompt, input_handler handler, void *data)
6209 {
6210 enum input_status status = INPUT_OK;
6211 static char buf[SIZEOF_STR];
6212 size_t pos = 0;
6214 buf[pos] = 0;
6216 while (status == INPUT_OK || status == INPUT_SKIP) {
6217 int key;
6219 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6220 wclrtoeol(status_win);
6222 key = get_input(pos + 1);
6223 switch (key) {
6224 case KEY_RETURN:
6225 case KEY_ENTER:
6226 case '\n':
6227 status = pos ? INPUT_STOP : INPUT_CANCEL;
6228 break;
6230 case KEY_BACKSPACE:
6231 if (pos > 0)
6232 buf[--pos] = 0;
6233 else
6234 status = INPUT_CANCEL;
6235 break;
6237 case KEY_ESC:
6238 status = INPUT_CANCEL;
6239 break;
6241 default:
6242 if (pos >= sizeof(buf)) {
6243 report("Input string too long");
6244 return NULL;
6245 }
6247 status = handler(data, buf, key);
6248 if (status == INPUT_OK)
6249 buf[pos++] = (char) key;
6250 }
6251 }
6253 /* Clear the status window */
6254 status_empty = FALSE;
6255 report("");
6257 if (status == INPUT_CANCEL)
6258 return NULL;
6260 buf[pos++] = 0;
6262 return buf;
6263 }
6265 static enum input_status
6266 prompt_yesno_handler(void *data, char *buf, int c)
6267 {
6268 if (c == 'y' || c == 'Y')
6269 return INPUT_STOP;
6270 if (c == 'n' || c == 'N')
6271 return INPUT_CANCEL;
6272 return INPUT_SKIP;
6273 }
6275 static bool
6276 prompt_yesno(const char *prompt)
6277 {
6278 char prompt2[SIZEOF_STR];
6280 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6281 return FALSE;
6283 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6284 }
6286 static enum input_status
6287 read_prompt_handler(void *data, char *buf, int c)
6288 {
6289 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6290 }
6292 static char *
6293 read_prompt(const char *prompt)
6294 {
6295 return prompt_input(prompt, read_prompt_handler, NULL);
6296 }
6298 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6299 {
6300 enum input_status status = INPUT_OK;
6301 int size = 0;
6303 while (items[size].text)
6304 size++;
6306 while (status == INPUT_OK) {
6307 const struct menu_item *item = &items[*selected];
6308 int key;
6309 int i;
6311 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6312 prompt, *selected + 1, size);
6313 if (item->hotkey)
6314 wprintw(status_win, "[%c] ", (char) item->hotkey);
6315 wprintw(status_win, "%s", item->text);
6316 wclrtoeol(status_win);
6318 key = get_input(COLS - 1);
6319 switch (key) {
6320 case KEY_RETURN:
6321 case KEY_ENTER:
6322 case '\n':
6323 status = INPUT_STOP;
6324 break;
6326 case KEY_LEFT:
6327 case KEY_UP:
6328 *selected = *selected - 1;
6329 if (*selected < 0)
6330 *selected = size - 1;
6331 break;
6333 case KEY_RIGHT:
6334 case KEY_DOWN:
6335 *selected = (*selected + 1) % size;
6336 break;
6338 case KEY_ESC:
6339 status = INPUT_CANCEL;
6340 break;
6342 default:
6343 for (i = 0; items[i].text; i++)
6344 if (items[i].hotkey == key) {
6345 *selected = i;
6346 status = INPUT_STOP;
6347 break;
6348 }
6349 }
6350 }
6352 /* Clear the status window */
6353 status_empty = FALSE;
6354 report("");
6356 return status != INPUT_CANCEL;
6357 }
6359 /*
6360 * Repository properties
6361 */
6363 static struct ref **refs = NULL;
6364 static size_t refs_size = 0;
6365 static struct ref *refs_head = NULL;
6367 static struct ref_list **ref_lists = NULL;
6368 static size_t ref_lists_size = 0;
6370 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6371 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6372 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6374 static int
6375 compare_refs(const void *ref1_, const void *ref2_)
6376 {
6377 const struct ref *ref1 = *(const struct ref **)ref1_;
6378 const struct ref *ref2 = *(const struct ref **)ref2_;
6380 if (ref1->tag != ref2->tag)
6381 return ref2->tag - ref1->tag;
6382 if (ref1->ltag != ref2->ltag)
6383 return ref2->ltag - ref2->ltag;
6384 if (ref1->head != ref2->head)
6385 return ref2->head - ref1->head;
6386 if (ref1->tracked != ref2->tracked)
6387 return ref2->tracked - ref1->tracked;
6388 if (ref1->remote != ref2->remote)
6389 return ref2->remote - ref1->remote;
6390 return strcmp(ref1->name, ref2->name);
6391 }
6393 static void
6394 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6395 {
6396 size_t i;
6398 for (i = 0; i < refs_size; i++)
6399 if (!visitor(data, refs[i]))
6400 break;
6401 }
6403 static struct ref *
6404 get_ref_head()
6405 {
6406 return refs_head;
6407 }
6409 static struct ref_list *
6410 get_ref_list(const char *id)
6411 {
6412 struct ref_list *list;
6413 size_t i;
6415 for (i = 0; i < ref_lists_size; i++)
6416 if (!strcmp(id, ref_lists[i]->id))
6417 return ref_lists[i];
6419 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6420 return NULL;
6421 list = calloc(1, sizeof(*list));
6422 if (!list)
6423 return NULL;
6425 for (i = 0; i < refs_size; i++) {
6426 if (!strcmp(id, refs[i]->id) &&
6427 realloc_refs_list(&list->refs, list->size, 1))
6428 list->refs[list->size++] = refs[i];
6429 }
6431 if (!list->refs) {
6432 free(list);
6433 return NULL;
6434 }
6436 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6437 ref_lists[ref_lists_size++] = list;
6438 return list;
6439 }
6441 static int
6442 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6443 {
6444 struct ref *ref = NULL;
6445 bool tag = FALSE;
6446 bool ltag = FALSE;
6447 bool remote = FALSE;
6448 bool tracked = FALSE;
6449 bool head = FALSE;
6450 int from = 0, to = refs_size - 1;
6452 if (!prefixcmp(name, "refs/tags/")) {
6453 if (!suffixcmp(name, namelen, "^{}")) {
6454 namelen -= 3;
6455 name[namelen] = 0;
6456 } else {
6457 ltag = TRUE;
6458 }
6460 tag = TRUE;
6461 namelen -= STRING_SIZE("refs/tags/");
6462 name += STRING_SIZE("refs/tags/");
6464 } else if (!prefixcmp(name, "refs/remotes/")) {
6465 remote = TRUE;
6466 namelen -= STRING_SIZE("refs/remotes/");
6467 name += STRING_SIZE("refs/remotes/");
6468 tracked = !strcmp(opt_remote, name);
6470 } else if (!prefixcmp(name, "refs/heads/")) {
6471 namelen -= STRING_SIZE("refs/heads/");
6472 name += STRING_SIZE("refs/heads/");
6473 if (!strncmp(opt_head, name, namelen))
6474 return OK;
6476 } else if (!strcmp(name, "HEAD")) {
6477 head = TRUE;
6478 if (*opt_head) {
6479 namelen = strlen(opt_head);
6480 name = opt_head;
6481 }
6482 }
6484 /* If we are reloading or it's an annotated tag, replace the
6485 * previous SHA1 with the resolved commit id; relies on the fact
6486 * git-ls-remote lists the commit id of an annotated tag right
6487 * before the commit id it points to. */
6488 while (from <= to) {
6489 size_t pos = (to + from) / 2;
6490 int cmp = strcmp(name, refs[pos]->name);
6492 if (!cmp) {
6493 ref = refs[pos];
6494 break;
6495 }
6497 if (cmp < 0)
6498 to = pos - 1;
6499 else
6500 from = pos + 1;
6501 }
6503 if (!ref) {
6504 if (!realloc_refs(&refs, refs_size, 1))
6505 return ERR;
6506 ref = calloc(1, sizeof(*ref) + namelen);
6507 if (!ref)
6508 return ERR;
6509 memmove(refs + from + 1, refs + from,
6510 (refs_size - from) * sizeof(*refs));
6511 refs[from] = ref;
6512 strncpy(ref->name, name, namelen);
6513 refs_size++;
6514 }
6516 ref->head = head;
6517 ref->tag = tag;
6518 ref->ltag = ltag;
6519 ref->remote = remote;
6520 ref->tracked = tracked;
6521 string_copy_rev(ref->id, id);
6523 if (head)
6524 refs_head = ref;
6525 return OK;
6526 }
6528 static int
6529 load_refs(void)
6530 {
6531 const char *head_argv[] = {
6532 "git", "symbolic-ref", "HEAD", NULL
6533 };
6534 static const char *ls_remote_argv[SIZEOF_ARG] = {
6535 "git", "ls-remote", opt_git_dir, NULL
6536 };
6537 static bool init = FALSE;
6538 size_t i;
6540 if (!init) {
6541 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6542 die("TIG_LS_REMOTE contains too many arguments");
6543 init = TRUE;
6544 }
6546 if (!*opt_git_dir)
6547 return OK;
6549 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6550 !prefixcmp(opt_head, "refs/heads/")) {
6551 char *offset = opt_head + STRING_SIZE("refs/heads/");
6553 memmove(opt_head, offset, strlen(offset) + 1);
6554 }
6556 refs_head = NULL;
6557 for (i = 0; i < refs_size; i++)
6558 refs[i]->id[0] = 0;
6560 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6561 return ERR;
6563 /* Update the ref lists to reflect changes. */
6564 for (i = 0; i < ref_lists_size; i++) {
6565 struct ref_list *list = ref_lists[i];
6566 size_t old, new;
6568 for (old = new = 0; old < list->size; old++)
6569 if (!strcmp(list->id, list->refs[old]->id))
6570 list->refs[new++] = list->refs[old];
6571 list->size = new;
6572 }
6574 return OK;
6575 }
6577 static void
6578 set_remote_branch(const char *name, const char *value, size_t valuelen)
6579 {
6580 if (!strcmp(name, ".remote")) {
6581 string_ncopy(opt_remote, value, valuelen);
6583 } else if (*opt_remote && !strcmp(name, ".merge")) {
6584 size_t from = strlen(opt_remote);
6586 if (!prefixcmp(value, "refs/heads/"))
6587 value += STRING_SIZE("refs/heads/");
6589 if (!string_format_from(opt_remote, &from, "/%s", value))
6590 opt_remote[0] = 0;
6591 }
6592 }
6594 static void
6595 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6596 {
6597 const char *argv[SIZEOF_ARG] = { name, "=" };
6598 int argc = 1 + (cmd == option_set_command);
6599 enum option_code error;
6601 if (!argv_from_string(argv, &argc, value))
6602 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6603 else
6604 error = cmd(argc, argv);
6606 if (error != OPT_OK)
6607 warn("Option 'tig.%s': %s", name, option_errors[error]);
6608 }
6610 static bool
6611 set_environment_variable(const char *name, const char *value)
6612 {
6613 size_t len = strlen(name) + 1 + strlen(value) + 1;
6614 char *env = malloc(len);
6616 if (env &&
6617 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6618 putenv(env) == 0)
6619 return TRUE;
6620 free(env);
6621 return FALSE;
6622 }
6624 static void
6625 set_work_tree(const char *value)
6626 {
6627 char cwd[SIZEOF_STR];
6629 if (!getcwd(cwd, sizeof(cwd)))
6630 die("Failed to get cwd path: %s", strerror(errno));
6631 if (chdir(opt_git_dir) < 0)
6632 die("Failed to chdir(%s): %s", strerror(errno));
6633 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6634 die("Failed to get git path: %s", strerror(errno));
6635 if (chdir(cwd) < 0)
6636 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6637 if (chdir(value) < 0)
6638 die("Failed to chdir(%s): %s", value, strerror(errno));
6639 if (!getcwd(cwd, sizeof(cwd)))
6640 die("Failed to get cwd path: %s", strerror(errno));
6641 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6642 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6643 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6644 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6645 opt_is_inside_work_tree = TRUE;
6646 }
6648 static int
6649 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6650 {
6651 if (!strcmp(name, "i18n.commitencoding"))
6652 string_ncopy(opt_encoding, value, valuelen);
6654 else if (!strcmp(name, "core.editor"))
6655 string_ncopy(opt_editor, value, valuelen);
6657 else if (!strcmp(name, "core.worktree"))
6658 set_work_tree(value);
6660 else if (!prefixcmp(name, "tig.color."))
6661 set_repo_config_option(name + 10, value, option_color_command);
6663 else if (!prefixcmp(name, "tig.bind."))
6664 set_repo_config_option(name + 9, value, option_bind_command);
6666 else if (!prefixcmp(name, "tig."))
6667 set_repo_config_option(name + 4, value, option_set_command);
6669 else if (*opt_head && !prefixcmp(name, "branch.") &&
6670 !strncmp(name + 7, opt_head, strlen(opt_head)))
6671 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6673 return OK;
6674 }
6676 static int
6677 load_git_config(void)
6678 {
6679 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6681 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6682 }
6684 static int
6685 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6686 {
6687 if (!opt_git_dir[0]) {
6688 string_ncopy(opt_git_dir, name, namelen);
6690 } else if (opt_is_inside_work_tree == -1) {
6691 /* This can be 3 different values depending on the
6692 * version of git being used. If git-rev-parse does not
6693 * understand --is-inside-work-tree it will simply echo
6694 * the option else either "true" or "false" is printed.
6695 * Default to true for the unknown case. */
6696 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6698 } else if (*name == '.') {
6699 string_ncopy(opt_cdup, name, namelen);
6701 } else {
6702 string_ncopy(opt_prefix, name, namelen);
6703 }
6705 return OK;
6706 }
6708 static int
6709 load_repo_info(void)
6710 {
6711 const char *rev_parse_argv[] = {
6712 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6713 "--show-cdup", "--show-prefix", NULL
6714 };
6716 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6717 }
6720 /*
6721 * Main
6722 */
6724 static const char usage[] =
6725 "tig " TIG_VERSION " (" __DATE__ ")\n"
6726 "\n"
6727 "Usage: tig [options] [revs] [--] [paths]\n"
6728 " or: tig show [options] [revs] [--] [paths]\n"
6729 " or: tig blame [options] [rev] [--] path\n"
6730 " or: tig status\n"
6731 " or: tig < [git command output]\n"
6732 "\n"
6733 "Options:\n"
6734 " -v, --version Show version and exit\n"
6735 " -h, --help Show help message and exit";
6737 static void __NORETURN
6738 quit(int sig)
6739 {
6740 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6741 if (cursed)
6742 endwin();
6743 exit(0);
6744 }
6746 static void __NORETURN
6747 die(const char *err, ...)
6748 {
6749 va_list args;
6751 endwin();
6753 va_start(args, err);
6754 fputs("tig: ", stderr);
6755 vfprintf(stderr, err, args);
6756 fputs("\n", stderr);
6757 va_end(args);
6759 exit(1);
6760 }
6762 static void
6763 warn(const char *msg, ...)
6764 {
6765 va_list args;
6767 va_start(args, msg);
6768 fputs("tig warning: ", stderr);
6769 vfprintf(stderr, msg, args);
6770 fputs("\n", stderr);
6771 va_end(args);
6772 }
6774 static int
6775 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6776 {
6777 const char ***filter_args = data;
6779 return argv_append(filter_args, name) ? OK : ERR;
6780 }
6782 static void
6783 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6784 {
6785 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6786 const char **all_argv = NULL;
6788 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6789 !argv_append_array(&all_argv, argv) ||
6790 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6791 die("Failed to split arguments");
6792 argv_free(all_argv);
6793 free(all_argv);
6794 }
6796 static void
6797 filter_options(const char *argv[])
6798 {
6799 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6800 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6801 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6802 }
6804 static enum request
6805 parse_options(int argc, const char *argv[])
6806 {
6807 enum request request = REQ_VIEW_MAIN;
6808 const char *subcommand;
6809 bool seen_dashdash = FALSE;
6810 const char **filter_argv = NULL;
6811 int i;
6813 if (!isatty(STDIN_FILENO))
6814 return REQ_VIEW_PAGER;
6816 if (argc <= 1)
6817 return REQ_VIEW_MAIN;
6819 subcommand = argv[1];
6820 if (!strcmp(subcommand, "status")) {
6821 if (argc > 2)
6822 warn("ignoring arguments after `%s'", subcommand);
6823 return REQ_VIEW_STATUS;
6825 } else if (!strcmp(subcommand, "blame")) {
6826 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6827 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6828 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6830 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6831 die("invalid number of options to blame\n\n%s", usage);
6833 if (opt_rev_argv) {
6834 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6835 }
6837 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6838 return REQ_VIEW_BLAME;
6840 } else if (!strcmp(subcommand, "show")) {
6841 request = REQ_VIEW_DIFF;
6843 } else {
6844 subcommand = NULL;
6845 }
6847 for (i = 1 + !!subcommand; i < argc; i++) {
6848 const char *opt = argv[i];
6850 if (seen_dashdash) {
6851 argv_append(&opt_file_argv, opt);
6852 continue;
6854 } else if (!strcmp(opt, "--")) {
6855 seen_dashdash = TRUE;
6856 continue;
6858 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6859 printf("tig version %s\n", TIG_VERSION);
6860 quit(0);
6862 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6863 printf("%s\n", usage);
6864 quit(0);
6866 } else if (!strcmp(opt, "--all")) {
6867 argv_append(&opt_rev_argv, opt);
6868 continue;
6869 }
6871 if (!argv_append(&filter_argv, opt))
6872 die("command too long");
6873 }
6875 if (filter_argv)
6876 filter_options(filter_argv);
6878 return request;
6879 }
6881 int
6882 main(int argc, const char *argv[])
6883 {
6884 const char *codeset = "UTF-8";
6885 enum request request = parse_options(argc, argv);
6886 struct view *view;
6888 signal(SIGINT, quit);
6889 signal(SIGPIPE, SIG_IGN);
6891 if (setlocale(LC_ALL, "")) {
6892 codeset = nl_langinfo(CODESET);
6893 }
6895 if (load_repo_info() == ERR)
6896 die("Failed to load repo info.");
6898 if (load_options() == ERR)
6899 die("Failed to load user config.");
6901 if (load_git_config() == ERR)
6902 die("Failed to load repo config.");
6904 /* Require a git repository unless when running in pager mode. */
6905 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6906 die("Not a git repository");
6908 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6909 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6910 if (opt_iconv_in == ICONV_NONE)
6911 die("Failed to initialize character set conversion");
6912 }
6914 if (codeset && strcmp(codeset, "UTF-8")) {
6915 opt_iconv_out = iconv_open(codeset, "UTF-8");
6916 if (opt_iconv_out == ICONV_NONE)
6917 die("Failed to initialize character set conversion");
6918 }
6920 if (load_refs() == ERR)
6921 die("Failed to load refs.");
6923 init_display();
6925 while (view_driver(display[current_view], request)) {
6926 int key = get_input(0);
6928 view = display[current_view];
6929 request = get_keybinding(view->keymap, key);
6931 /* Some low-level request handling. This keeps access to
6932 * status_win restricted. */
6933 switch (request) {
6934 case REQ_NONE:
6935 report("Unknown key, press %s for help",
6936 get_key(view->keymap, REQ_VIEW_HELP));
6937 break;
6938 case REQ_PROMPT:
6939 {
6940 char *cmd = read_prompt(":");
6942 if (cmd && isdigit(*cmd)) {
6943 int lineno = view->lineno + 1;
6945 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6946 select_view_line(view, lineno - 1);
6947 report("");
6948 } else {
6949 report("Unable to parse '%s' as a line number", cmd);
6950 }
6952 } else if (cmd) {
6953 struct view *next = VIEW(REQ_VIEW_PAGER);
6954 const char *argv[SIZEOF_ARG] = { "git" };
6955 int argc = 1;
6957 /* When running random commands, initially show the
6958 * command in the title. However, it maybe later be
6959 * overwritten if a commit line is selected. */
6960 string_ncopy(next->ref, cmd, strlen(cmd));
6962 if (!argv_from_string(argv, &argc, cmd)) {
6963 report("Too many arguments");
6964 } else if (!prepare_update(next, argv, NULL)) {
6965 report("Failed to format command");
6966 } else {
6967 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
6968 }
6969 }
6971 request = REQ_NONE;
6972 break;
6973 }
6974 case REQ_SEARCH:
6975 case REQ_SEARCH_BACK:
6976 {
6977 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6978 char *search = read_prompt(prompt);
6980 if (search)
6981 string_ncopy(opt_search, search, strlen(search));
6982 else if (*opt_search)
6983 request = request == REQ_SEARCH ?
6984 REQ_FIND_NEXT :
6985 REQ_FIND_PREV;
6986 else
6987 request = REQ_NONE;
6988 break;
6989 }
6990 default:
6991 break;
6992 }
6993 }
6995 quit(0);
6997 return 0;
6998 }