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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 #define GRAPHIC_ENUM(_) \
65 _(GRAPHIC, ASCII), \
66 _(GRAPHIC, DEFAULT), \
67 _(GRAPHIC, UTF_8)
69 DEFINE_ENUM(graphic, GRAPHIC_ENUM);
71 #define DATE_ENUM(_) \
72 _(DATE, NO), \
73 _(DATE, DEFAULT), \
74 _(DATE, LOCAL), \
75 _(DATE, RELATIVE), \
76 _(DATE, SHORT)
78 DEFINE_ENUM(date, DATE_ENUM);
80 struct time {
81 time_t sec;
82 int tz;
83 };
85 static inline int timecmp(const struct time *t1, const struct time *t2)
86 {
87 return t1->sec - t2->sec;
88 }
90 static const char *
91 mkdate(const struct time *time, enum date date)
92 {
93 static char buf[DATE_COLS + 1];
94 static const struct enum_map reldate[] = {
95 { "second", 1, 60 * 2 },
96 { "minute", 60, 60 * 60 * 2 },
97 { "hour", 60 * 60, 60 * 60 * 24 * 2 },
98 { "day", 60 * 60 * 24, 60 * 60 * 24 * 7 * 2 },
99 { "week", 60 * 60 * 24 * 7, 60 * 60 * 24 * 7 * 5 },
100 { "month", 60 * 60 * 24 * 30, 60 * 60 * 24 * 30 * 12 },
101 };
102 struct tm tm;
104 if (!date || !time || !time->sec)
105 return "";
107 if (date == DATE_RELATIVE) {
108 struct timeval now;
109 time_t date = time->sec + time->tz;
110 time_t seconds;
111 int i;
113 gettimeofday(&now, NULL);
114 seconds = now.tv_sec < date ? date - now.tv_sec : now.tv_sec - date;
115 for (i = 0; i < ARRAY_SIZE(reldate); i++) {
116 if (seconds >= reldate[i].value)
117 continue;
119 seconds /= reldate[i].namelen;
120 if (!string_format(buf, "%ld %s%s %s",
121 seconds, reldate[i].name,
122 seconds > 1 ? "s" : "",
123 now.tv_sec >= date ? "ago" : "ahead"))
124 break;
125 return buf;
126 }
127 }
129 if (date == DATE_LOCAL) {
130 time_t date = time->sec + time->tz;
131 localtime_r(&date, &tm);
132 }
133 else {
134 gmtime_r(&time->sec, &tm);
135 }
136 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
137 }
140 #define AUTHOR_ENUM(_) \
141 _(AUTHOR, NO), \
142 _(AUTHOR, FULL), \
143 _(AUTHOR, ABBREVIATED)
145 DEFINE_ENUM(author, AUTHOR_ENUM);
147 static const char *
148 get_author_initials(const char *author)
149 {
150 static char initials[AUTHOR_COLS * 6 + 1];
151 size_t pos = 0;
152 const char *end = strchr(author, '\0');
154 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@' || (c) == '-')
156 memset(initials, 0, sizeof(initials));
157 while (author < end) {
158 unsigned char bytes;
159 size_t i;
161 while (author < end && is_initial_sep(*author))
162 author++;
164 bytes = utf8_char_length(author, end);
165 if (bytes >= sizeof(initials) - 1 - pos)
166 break;
167 while (bytes--) {
168 initials[pos++] = *author++;
169 }
171 i = pos;
172 while (author < end && !is_initial_sep(*author)) {
173 bytes = utf8_char_length(author, end);
174 if (bytes >= sizeof(initials) - 1 - i) {
175 while (author < end && !is_initial_sep(*author))
176 author++;
177 break;
178 }
179 while (bytes--) {
180 initials[i++] = *author++;
181 }
182 }
184 initials[i++] = 0;
185 }
187 return initials;
188 }
190 #define author_trim(cols) (cols == 0 || cols > 5)
192 static const char *
193 mkauthor(const char *text, int cols, enum author author)
194 {
195 bool trim = author_trim(cols);
196 bool abbreviate = author == AUTHOR_ABBREVIATED || !trim;
198 if (author == AUTHOR_NO)
199 return "";
200 if (abbreviate && text)
201 return get_author_initials(text);
202 return text;
203 }
205 static const char *
206 mkmode(mode_t mode)
207 {
208 if (S_ISDIR(mode))
209 return "drwxr-xr-x";
210 else if (S_ISLNK(mode))
211 return "lrwxrwxrwx";
212 else if (S_ISGITLINK(mode))
213 return "m---------";
214 else if (S_ISREG(mode) && mode & S_IXUSR)
215 return "-rwxr-xr-x";
216 else if (S_ISREG(mode))
217 return "-rw-r--r--";
218 else
219 return "----------";
220 }
223 /*
224 * User requests
225 */
227 #define REQ_INFO \
228 /* XXX: Keep the view request first and in sync with views[]. */ \
229 REQ_GROUP("View switching") \
230 REQ_(VIEW_MAIN, "Show main view"), \
231 REQ_(VIEW_DIFF, "Show diff view"), \
232 REQ_(VIEW_LOG, "Show log view"), \
233 REQ_(VIEW_TREE, "Show tree view"), \
234 REQ_(VIEW_BLOB, "Show blob view"), \
235 REQ_(VIEW_BLAME, "Show blame view"), \
236 REQ_(VIEW_BRANCH, "Show branch view"), \
237 REQ_(VIEW_HELP, "Show help page"), \
238 REQ_(VIEW_PAGER, "Show pager view"), \
239 REQ_(VIEW_STATUS, "Show status view"), \
240 REQ_(VIEW_STAGE, "Show stage view"), \
241 \
242 REQ_GROUP("View manipulation") \
243 REQ_(ENTER, "Enter current line and scroll"), \
244 REQ_(NEXT, "Move to next"), \
245 REQ_(PREVIOUS, "Move to previous"), \
246 REQ_(PARENT, "Move to parent"), \
247 REQ_(VIEW_NEXT, "Move focus to next view"), \
248 REQ_(REFRESH, "Reload and refresh"), \
249 REQ_(MAXIMIZE, "Maximize the current view"), \
250 REQ_(VIEW_CLOSE, "Close the current view"), \
251 REQ_(QUIT, "Close all views and quit"), \
252 \
253 REQ_GROUP("View specific requests") \
254 REQ_(STATUS_UPDATE, "Update file status"), \
255 REQ_(STATUS_REVERT, "Revert file changes"), \
256 REQ_(STATUS_MERGE, "Merge file using external tool"), \
257 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
258 \
259 REQ_GROUP("Cursor navigation") \
260 REQ_(MOVE_UP, "Move cursor one line up"), \
261 REQ_(MOVE_DOWN, "Move cursor one line down"), \
262 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
263 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
264 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
265 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
266 \
267 REQ_GROUP("Scrolling") \
268 REQ_(SCROLL_FIRST_COL, "Scroll to the first line columns"), \
269 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
270 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
271 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
272 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
273 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
274 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
275 \
276 REQ_GROUP("Searching") \
277 REQ_(SEARCH, "Search the view"), \
278 REQ_(SEARCH_BACK, "Search backwards in the view"), \
279 REQ_(FIND_NEXT, "Find next search match"), \
280 REQ_(FIND_PREV, "Find previous search match"), \
281 \
282 REQ_GROUP("Option manipulation") \
283 REQ_(OPTIONS, "Open option menu"), \
284 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
285 REQ_(TOGGLE_DATE, "Toggle date display"), \
286 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
287 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
288 REQ_(TOGGLE_GRAPHIC, "Toggle (line) graphics mode"), \
289 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
290 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
291 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
292 \
293 REQ_GROUP("Misc") \
294 REQ_(PROMPT, "Bring up the prompt"), \
295 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
296 REQ_(SHOW_VERSION, "Show version information"), \
297 REQ_(STOP_LOADING, "Stop all loading views"), \
298 REQ_(EDIT, "Open in editor"), \
299 REQ_(NONE, "Do nothing")
302 /* User action requests. */
303 enum request {
304 #define REQ_GROUP(help)
305 #define REQ_(req, help) REQ_##req
307 /* Offset all requests to avoid conflicts with ncurses getch values. */
308 REQ_UNKNOWN = KEY_MAX + 1,
309 REQ_OFFSET,
310 REQ_INFO
312 #undef REQ_GROUP
313 #undef REQ_
314 };
316 struct request_info {
317 enum request request;
318 const char *name;
319 int namelen;
320 const char *help;
321 };
323 static const struct request_info req_info[] = {
324 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
325 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
326 REQ_INFO
327 #undef REQ_GROUP
328 #undef REQ_
329 };
331 static enum request
332 get_request(const char *name)
333 {
334 int namelen = strlen(name);
335 int i;
337 for (i = 0; i < ARRAY_SIZE(req_info); i++)
338 if (enum_equals(req_info[i], name, namelen))
339 return req_info[i].request;
341 return REQ_UNKNOWN;
342 }
345 /*
346 * Options
347 */
349 /* Option and state variables. */
350 static enum graphic opt_line_graphics = GRAPHIC_DEFAULT;
351 static enum date opt_date = DATE_DEFAULT;
352 static enum author opt_author = AUTHOR_FULL;
353 static bool opt_rev_graph = TRUE;
354 static bool opt_line_number = FALSE;
355 static bool opt_show_refs = TRUE;
356 static bool opt_untracked_dirs_content = TRUE;
357 static int opt_num_interval = 5;
358 static double opt_hscroll = 0.50;
359 static double opt_scale_split_view = 2.0 / 3.0;
360 static int opt_tab_size = 8;
361 static int opt_author_cols = AUTHOR_COLS;
362 static char opt_path[SIZEOF_STR] = "";
363 static char opt_file[SIZEOF_STR] = "";
364 static char opt_ref[SIZEOF_REF] = "";
365 static char opt_head[SIZEOF_REF] = "";
366 static char opt_remote[SIZEOF_REF] = "";
367 static char opt_encoding[20] = "UTF-8";
368 static iconv_t opt_iconv_in = ICONV_NONE;
369 static iconv_t opt_iconv_out = ICONV_NONE;
370 static char opt_search[SIZEOF_STR] = "";
371 static char opt_cdup[SIZEOF_STR] = "";
372 static char opt_prefix[SIZEOF_STR] = "";
373 static char opt_git_dir[SIZEOF_STR] = "";
374 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
375 static char opt_editor[SIZEOF_STR] = "";
376 static FILE *opt_tty = NULL;
377 static const char **opt_diff_argv = NULL;
378 static const char **opt_rev_argv = NULL;
379 static const char **opt_file_argv = NULL;
380 static const char **opt_blame_argv = NULL;
382 #define is_initial_commit() (!get_ref_head())
383 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strcmp(rev, get_ref_head()->id)))
386 /*
387 * Line-oriented content detection.
388 */
390 #define LINE_INFO \
391 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
392 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
393 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
394 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
395 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
396 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
397 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
398 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
399 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
400 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
401 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
402 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
403 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
404 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
405 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
406 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
407 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
408 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
409 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
410 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
411 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
412 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
413 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
414 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
415 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
416 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
417 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
418 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
419 LINE(TESTED, " Tested-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
420 LINE(REVIEWED, " Reviewed-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
421 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
422 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
423 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
424 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
425 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
426 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
427 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
428 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
429 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
430 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
431 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
432 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
433 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
434 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
435 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
436 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
437 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
438 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
439 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
440 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
441 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
442 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
443 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
444 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
445 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
446 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
447 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
448 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
449 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
450 LINE(GRAPH_LINE_0, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
451 LINE(GRAPH_LINE_1, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
452 LINE(GRAPH_LINE_2, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
453 LINE(GRAPH_LINE_3, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
454 LINE(GRAPH_LINE_4, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
455 LINE(GRAPH_LINE_5, "", COLOR_WHITE, COLOR_DEFAULT, 0), \
456 LINE(GRAPH_LINE_6, "", COLOR_RED, COLOR_DEFAULT, 0), \
457 LINE(GRAPH_COMMIT, "", COLOR_BLUE, COLOR_DEFAULT, 0)
459 enum line_type {
460 #define LINE(type, line, fg, bg, attr) \
461 LINE_##type
462 LINE_INFO,
463 LINE_NONE
464 #undef LINE
465 };
467 struct line_info {
468 const char *name; /* Option name. */
469 int namelen; /* Size of option name. */
470 const char *line; /* The start of line to match. */
471 int linelen; /* Size of string to match. */
472 int fg, bg, attr; /* Color and text attributes for the lines. */
473 };
475 static struct line_info line_info[] = {
476 #define LINE(type, line, fg, bg, attr) \
477 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
478 LINE_INFO
479 #undef LINE
480 };
482 static enum line_type
483 get_line_type(const char *line)
484 {
485 int linelen = strlen(line);
486 enum line_type type;
488 for (type = 0; type < ARRAY_SIZE(line_info); type++)
489 /* Case insensitive search matches Signed-off-by lines better. */
490 if (linelen >= line_info[type].linelen &&
491 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
492 return type;
494 return LINE_DEFAULT;
495 }
497 static inline int
498 get_line_attr(enum line_type type)
499 {
500 assert(type < ARRAY_SIZE(line_info));
501 return COLOR_PAIR(type) | line_info[type].attr;
502 }
504 static struct line_info *
505 get_line_info(const char *name)
506 {
507 size_t namelen = strlen(name);
508 enum line_type type;
510 for (type = 0; type < ARRAY_SIZE(line_info); type++)
511 if (enum_equals(line_info[type], name, namelen))
512 return &line_info[type];
514 return NULL;
515 }
517 static void
518 init_colors(void)
519 {
520 int default_bg = line_info[LINE_DEFAULT].bg;
521 int default_fg = line_info[LINE_DEFAULT].fg;
522 enum line_type type;
524 start_color();
526 if (assume_default_colors(default_fg, default_bg) == ERR) {
527 default_bg = COLOR_BLACK;
528 default_fg = COLOR_WHITE;
529 }
531 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
532 struct line_info *info = &line_info[type];
533 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
534 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
536 init_pair(type, fg, bg);
537 }
538 }
540 struct line {
541 enum line_type type;
543 /* State flags */
544 unsigned int selected:1;
545 unsigned int dirty:1;
546 unsigned int cleareol:1;
547 unsigned int other:16;
549 void *data; /* User data */
550 };
553 /*
554 * Keys
555 */
557 struct keybinding {
558 int alias;
559 enum request request;
560 };
562 static struct keybinding default_keybindings[] = {
563 /* View switching */
564 { 'm', REQ_VIEW_MAIN },
565 { 'd', REQ_VIEW_DIFF },
566 { 'l', REQ_VIEW_LOG },
567 { 't', REQ_VIEW_TREE },
568 { 'f', REQ_VIEW_BLOB },
569 { 'B', REQ_VIEW_BLAME },
570 { 'H', REQ_VIEW_BRANCH },
571 { 'p', REQ_VIEW_PAGER },
572 { 'h', REQ_VIEW_HELP },
573 { 'S', REQ_VIEW_STATUS },
574 { 'c', REQ_VIEW_STAGE },
576 /* View manipulation */
577 { 'q', REQ_VIEW_CLOSE },
578 { KEY_TAB, REQ_VIEW_NEXT },
579 { KEY_RETURN, REQ_ENTER },
580 { KEY_UP, REQ_PREVIOUS },
581 { KEY_CTL('P'), REQ_PREVIOUS },
582 { KEY_DOWN, REQ_NEXT },
583 { KEY_CTL('N'), REQ_NEXT },
584 { 'R', REQ_REFRESH },
585 { KEY_F(5), REQ_REFRESH },
586 { 'O', REQ_MAXIMIZE },
588 /* Cursor navigation */
589 { 'k', REQ_MOVE_UP },
590 { 'j', REQ_MOVE_DOWN },
591 { KEY_HOME, REQ_MOVE_FIRST_LINE },
592 { KEY_END, REQ_MOVE_LAST_LINE },
593 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
594 { KEY_CTL('D'), REQ_MOVE_PAGE_DOWN },
595 { ' ', REQ_MOVE_PAGE_DOWN },
596 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
597 { KEY_CTL('U'), REQ_MOVE_PAGE_UP },
598 { 'b', REQ_MOVE_PAGE_UP },
599 { '-', REQ_MOVE_PAGE_UP },
601 /* Scrolling */
602 { '|', REQ_SCROLL_FIRST_COL },
603 { KEY_LEFT, REQ_SCROLL_LEFT },
604 { KEY_RIGHT, REQ_SCROLL_RIGHT },
605 { KEY_IC, REQ_SCROLL_LINE_UP },
606 { KEY_CTL('Y'), REQ_SCROLL_LINE_UP },
607 { KEY_DC, REQ_SCROLL_LINE_DOWN },
608 { KEY_CTL('E'), REQ_SCROLL_LINE_DOWN },
609 { 'w', REQ_SCROLL_PAGE_UP },
610 { 's', REQ_SCROLL_PAGE_DOWN },
612 /* Searching */
613 { '/', REQ_SEARCH },
614 { '?', REQ_SEARCH_BACK },
615 { 'n', REQ_FIND_NEXT },
616 { 'N', REQ_FIND_PREV },
618 /* Misc */
619 { 'Q', REQ_QUIT },
620 { 'z', REQ_STOP_LOADING },
621 { 'v', REQ_SHOW_VERSION },
622 { 'r', REQ_SCREEN_REDRAW },
623 { KEY_CTL('L'), REQ_SCREEN_REDRAW },
624 { 'o', REQ_OPTIONS },
625 { '.', REQ_TOGGLE_LINENO },
626 { 'D', REQ_TOGGLE_DATE },
627 { 'A', REQ_TOGGLE_AUTHOR },
628 { 'g', REQ_TOGGLE_REV_GRAPH },
629 { '~', REQ_TOGGLE_GRAPHIC },
630 { 'F', REQ_TOGGLE_REFS },
631 { 'I', REQ_TOGGLE_SORT_ORDER },
632 { 'i', REQ_TOGGLE_SORT_FIELD },
633 { ':', REQ_PROMPT },
634 { 'u', REQ_STATUS_UPDATE },
635 { '!', REQ_STATUS_REVERT },
636 { 'M', REQ_STATUS_MERGE },
637 { '@', REQ_STAGE_NEXT },
638 { ',', REQ_PARENT },
639 { 'e', REQ_EDIT },
640 };
642 #define KEYMAP_ENUM(_) \
643 _(KEYMAP, GENERIC), \
644 _(KEYMAP, MAIN), \
645 _(KEYMAP, DIFF), \
646 _(KEYMAP, LOG), \
647 _(KEYMAP, TREE), \
648 _(KEYMAP, BLOB), \
649 _(KEYMAP, BLAME), \
650 _(KEYMAP, BRANCH), \
651 _(KEYMAP, PAGER), \
652 _(KEYMAP, HELP), \
653 _(KEYMAP, STATUS), \
654 _(KEYMAP, STAGE)
656 DEFINE_ENUM(keymap, KEYMAP_ENUM);
658 #define set_keymap(map, name) map_enum(map, keymap_map, name)
660 struct keybinding_table {
661 struct keybinding *data;
662 size_t size;
663 };
665 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_map)];
667 static void
668 add_keybinding(enum keymap keymap, enum request request, int key)
669 {
670 struct keybinding_table *table = &keybindings[keymap];
671 size_t i;
673 for (i = 0; i < keybindings[keymap].size; i++) {
674 if (keybindings[keymap].data[i].alias == key) {
675 keybindings[keymap].data[i].request = request;
676 return;
677 }
678 }
680 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
681 if (!table->data)
682 die("Failed to allocate keybinding");
683 table->data[table->size].alias = key;
684 table->data[table->size++].request = request;
686 if (request == REQ_NONE && keymap == KEYMAP_GENERIC) {
687 int i;
689 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
690 if (default_keybindings[i].alias == key)
691 default_keybindings[i].request = REQ_NONE;
692 }
693 }
695 /* Looks for a key binding first in the given map, then in the generic map, and
696 * lastly in the default keybindings. */
697 static enum request
698 get_keybinding(enum keymap keymap, int key)
699 {
700 size_t i;
702 for (i = 0; i < keybindings[keymap].size; i++)
703 if (keybindings[keymap].data[i].alias == key)
704 return keybindings[keymap].data[i].request;
706 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
707 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
708 return keybindings[KEYMAP_GENERIC].data[i].request;
710 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
711 if (default_keybindings[i].alias == key)
712 return default_keybindings[i].request;
714 return (enum request) key;
715 }
718 struct key {
719 const char *name;
720 int value;
721 };
723 static const struct key key_table[] = {
724 { "Enter", KEY_RETURN },
725 { "Space", ' ' },
726 { "Backspace", KEY_BACKSPACE },
727 { "Tab", KEY_TAB },
728 { "Escape", KEY_ESC },
729 { "Left", KEY_LEFT },
730 { "Right", KEY_RIGHT },
731 { "Up", KEY_UP },
732 { "Down", KEY_DOWN },
733 { "Insert", KEY_IC },
734 { "Delete", KEY_DC },
735 { "Hash", '#' },
736 { "Home", KEY_HOME },
737 { "End", KEY_END },
738 { "PageUp", KEY_PPAGE },
739 { "PageDown", KEY_NPAGE },
740 { "F1", KEY_F(1) },
741 { "F2", KEY_F(2) },
742 { "F3", KEY_F(3) },
743 { "F4", KEY_F(4) },
744 { "F5", KEY_F(5) },
745 { "F6", KEY_F(6) },
746 { "F7", KEY_F(7) },
747 { "F8", KEY_F(8) },
748 { "F9", KEY_F(9) },
749 { "F10", KEY_F(10) },
750 { "F11", KEY_F(11) },
751 { "F12", KEY_F(12) },
752 };
754 static int
755 get_key_value(const char *name)
756 {
757 int i;
759 for (i = 0; i < ARRAY_SIZE(key_table); i++)
760 if (!strcasecmp(key_table[i].name, name))
761 return key_table[i].value;
763 if (strlen(name) == 2 && name[0] == '^' && isprint(*name))
764 return (int)name[1] & 0x1f;
765 if (strlen(name) == 1 && isprint(*name))
766 return (int) *name;
767 return ERR;
768 }
770 static const char *
771 get_key_name(int key_value)
772 {
773 static char key_char[] = "'X'\0";
774 const char *seq = NULL;
775 int key;
777 for (key = 0; key < ARRAY_SIZE(key_table); key++)
778 if (key_table[key].value == key_value)
779 seq = key_table[key].name;
781 if (seq == NULL && key_value < 0x7f) {
782 char *s = key_char + 1;
784 if (key_value >= 0x20) {
785 *s++ = key_value;
786 } else {
787 *s++ = '^';
788 *s++ = 0x40 | (key_value & 0x1f);
789 }
790 *s++ = '\'';
791 *s++ = '\0';
792 seq = key_char;
793 }
795 return seq ? seq : "(no key)";
796 }
798 static bool
799 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
800 {
801 const char *sep = *pos > 0 ? ", " : "";
802 const char *keyname = get_key_name(keybinding->alias);
804 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
805 }
807 static bool
808 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
809 enum keymap keymap, bool all)
810 {
811 int i;
813 for (i = 0; i < keybindings[keymap].size; i++) {
814 if (keybindings[keymap].data[i].request == request) {
815 if (!append_key(buf, pos, &keybindings[keymap].data[i]))
816 return FALSE;
817 if (!all)
818 break;
819 }
820 }
822 return TRUE;
823 }
825 #define get_key(keymap, request) get_keys(keymap, request, FALSE)
827 static const char *
828 get_keys(enum keymap keymap, enum request request, bool all)
829 {
830 static char buf[BUFSIZ];
831 size_t pos = 0;
832 int i;
834 buf[pos] = 0;
836 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
837 return "Too many keybindings!";
838 if (pos > 0 && !all)
839 return buf;
841 if (keymap != KEYMAP_GENERIC) {
842 /* Only the generic keymap includes the default keybindings when
843 * listing all keys. */
844 if (all)
845 return buf;
847 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
848 return "Too many keybindings!";
849 if (pos)
850 return buf;
851 }
853 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
854 if (default_keybindings[i].request == request) {
855 if (!append_key(buf, &pos, &default_keybindings[i]))
856 return "Too many keybindings!";
857 if (!all)
858 return buf;
859 }
860 }
862 return buf;
863 }
865 struct run_request {
866 enum keymap keymap;
867 int key;
868 const char **argv;
869 };
871 static struct run_request *run_request;
872 static size_t run_requests;
874 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
876 static enum request
877 add_run_request(enum keymap keymap, int key, const char **argv)
878 {
879 struct run_request *req;
881 if (!realloc_run_requests(&run_request, run_requests, 1))
882 return REQ_NONE;
884 req = &run_request[run_requests];
885 req->keymap = keymap;
886 req->key = key;
887 req->argv = NULL;
889 if (!argv_copy(&req->argv, argv))
890 return REQ_NONE;
892 return REQ_NONE + ++run_requests;
893 }
895 static struct run_request *
896 get_run_request(enum request request)
897 {
898 if (request <= REQ_NONE)
899 return NULL;
900 return &run_request[request - REQ_NONE - 1];
901 }
903 static void
904 add_builtin_run_requests(void)
905 {
906 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
907 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
908 const char *commit[] = { "git", "commit", NULL };
909 const char *gc[] = { "git", "gc", NULL };
910 struct run_request reqs[] = {
911 { KEYMAP_MAIN, 'C', cherry_pick },
912 { KEYMAP_STATUS, 'C', commit },
913 { KEYMAP_BRANCH, 'C', checkout },
914 { KEYMAP_GENERIC, 'G', gc },
915 };
916 int i;
918 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
919 enum request req = get_keybinding(reqs[i].keymap, reqs[i].key);
921 if (req != reqs[i].key)
922 continue;
923 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argv);
924 if (req != REQ_NONE)
925 add_keybinding(reqs[i].keymap, req, reqs[i].key);
926 }
927 }
929 /*
930 * User config file handling.
931 */
933 #define OPT_ERR_INFO \
934 OPT_ERR_(INTEGER_VALUE_OUT_OF_BOUND, "Integer value out of bound"), \
935 OPT_ERR_(INVALID_STEP_VALUE, "Invalid step value"), \
936 OPT_ERR_(NO_OPTION_VALUE, "No option value"), \
937 OPT_ERR_(NO_VALUE_ASSIGNED, "No value assigned"), \
938 OPT_ERR_(OBSOLETE_REQUEST_NAME, "Obsolete request name"), \
939 OPT_ERR_(OUT_OF_MEMORY, "Out of memory"), \
940 OPT_ERR_(TOO_MANY_OPTION_ARGUMENTS, "Too many option arguments"), \
941 OPT_ERR_(UNKNOWN_ATTRIBUTE, "Unknown attribute"), \
942 OPT_ERR_(UNKNOWN_COLOR, "Unknown color"), \
943 OPT_ERR_(UNKNOWN_COLOR_NAME, "Unknown color name"), \
944 OPT_ERR_(UNKNOWN_KEY, "Unknown key"), \
945 OPT_ERR_(UNKNOWN_KEY_MAP, "Unknown key map"), \
946 OPT_ERR_(UNKNOWN_OPTION_COMMAND, "Unknown option command"), \
947 OPT_ERR_(UNKNOWN_REQUEST_NAME, "Unknown request name"), \
948 OPT_ERR_(UNKNOWN_VARIABLE_NAME, "Unknown variable name"), \
949 OPT_ERR_(UNMATCHED_QUOTATION, "Unmatched quotation"), \
950 OPT_ERR_(WRONG_NUMBER_OF_ARGUMENTS, "Wrong number of arguments"),
952 enum option_code {
953 #define OPT_ERR_(name, msg) OPT_ERR_ ## name
954 OPT_ERR_INFO
955 #undef OPT_ERR_
956 OPT_OK
957 };
959 static const char *option_errors[] = {
960 #define OPT_ERR_(name, msg) msg
961 OPT_ERR_INFO
962 #undef OPT_ERR_
963 };
965 static const struct enum_map color_map[] = {
966 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
967 COLOR_MAP(DEFAULT),
968 COLOR_MAP(BLACK),
969 COLOR_MAP(BLUE),
970 COLOR_MAP(CYAN),
971 COLOR_MAP(GREEN),
972 COLOR_MAP(MAGENTA),
973 COLOR_MAP(RED),
974 COLOR_MAP(WHITE),
975 COLOR_MAP(YELLOW),
976 };
978 static const struct enum_map attr_map[] = {
979 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
980 ATTR_MAP(NORMAL),
981 ATTR_MAP(BLINK),
982 ATTR_MAP(BOLD),
983 ATTR_MAP(DIM),
984 ATTR_MAP(REVERSE),
985 ATTR_MAP(STANDOUT),
986 ATTR_MAP(UNDERLINE),
987 };
989 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
991 static enum option_code
992 parse_step(double *opt, const char *arg)
993 {
994 *opt = atoi(arg);
995 if (!strchr(arg, '%'))
996 return OPT_OK;
998 /* "Shift down" so 100% and 1 does not conflict. */
999 *opt = (*opt - 1) / 100;
1000 if (*opt >= 1.0) {
1001 *opt = 0.99;
1002 return OPT_ERR_INVALID_STEP_VALUE;
1003 }
1004 if (*opt < 0.0) {
1005 *opt = 1;
1006 return OPT_ERR_INVALID_STEP_VALUE;
1007 }
1008 return OPT_OK;
1009 }
1011 static enum option_code
1012 parse_int(int *opt, const char *arg, int min, int max)
1013 {
1014 int value = atoi(arg);
1016 if (min <= value && value <= max) {
1017 *opt = value;
1018 return OPT_OK;
1019 }
1021 return OPT_ERR_INTEGER_VALUE_OUT_OF_BOUND;
1022 }
1024 static bool
1025 set_color(int *color, const char *name)
1026 {
1027 if (map_enum(color, color_map, name))
1028 return TRUE;
1029 if (!prefixcmp(name, "color"))
1030 return parse_int(color, name + 5, 0, 255) == OK;
1031 return FALSE;
1032 }
1034 /* Wants: object fgcolor bgcolor [attribute] */
1035 static enum option_code
1036 option_color_command(int argc, const char *argv[])
1037 {
1038 struct line_info *info;
1040 if (argc < 3)
1041 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1043 info = get_line_info(argv[0]);
1044 if (!info) {
1045 static const struct enum_map obsolete[] = {
1046 ENUM_MAP("main-delim", LINE_DELIMITER),
1047 ENUM_MAP("main-date", LINE_DATE),
1048 ENUM_MAP("main-author", LINE_AUTHOR),
1049 };
1050 int index;
1052 if (!map_enum(&index, obsolete, argv[0]))
1053 return OPT_ERR_UNKNOWN_COLOR_NAME;
1054 info = &line_info[index];
1055 }
1057 if (!set_color(&info->fg, argv[1]) ||
1058 !set_color(&info->bg, argv[2]))
1059 return OPT_ERR_UNKNOWN_COLOR;
1061 info->attr = 0;
1062 while (argc-- > 3) {
1063 int attr;
1065 if (!set_attribute(&attr, argv[argc]))
1066 return OPT_ERR_UNKNOWN_ATTRIBUTE;
1067 info->attr |= attr;
1068 }
1070 return OPT_OK;
1071 }
1073 static enum option_code
1074 parse_bool(bool *opt, const char *arg)
1075 {
1076 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1077 ? TRUE : FALSE;
1078 return OPT_OK;
1079 }
1081 static enum option_code
1082 parse_enum_do(unsigned int *opt, const char *arg,
1083 const struct enum_map *map, size_t map_size)
1084 {
1085 bool is_true;
1087 assert(map_size > 1);
1089 if (map_enum_do(map, map_size, (int *) opt, arg))
1090 return OPT_OK;
1092 parse_bool(&is_true, arg);
1093 *opt = is_true ? map[1].value : map[0].value;
1094 return OPT_OK;
1095 }
1097 #define parse_enum(opt, arg, map) \
1098 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1100 static enum option_code
1101 parse_string(char *opt, const char *arg, size_t optsize)
1102 {
1103 int arglen = strlen(arg);
1105 switch (arg[0]) {
1106 case '\"':
1107 case '\'':
1108 if (arglen == 1 || arg[arglen - 1] != arg[0])
1109 return OPT_ERR_UNMATCHED_QUOTATION;
1110 arg += 1; arglen -= 2;
1111 default:
1112 string_ncopy_do(opt, optsize, arg, arglen);
1113 return OPT_OK;
1114 }
1115 }
1117 static enum option_code
1118 parse_args(const char ***args, const char *argv[])
1119 {
1120 if (*args == NULL && !argv_copy(args, argv))
1121 return OPT_ERR_OUT_OF_MEMORY;
1122 return OPT_OK;
1123 }
1125 /* Wants: name = value */
1126 static enum option_code
1127 option_set_command(int argc, const char *argv[])
1128 {
1129 if (argc < 3)
1130 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1132 if (strcmp(argv[1], "="))
1133 return OPT_ERR_NO_VALUE_ASSIGNED;
1135 if (!strcmp(argv[0], "blame-options"))
1136 return parse_args(&opt_blame_argv, argv + 2);
1138 if (argc != 3)
1139 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1141 if (!strcmp(argv[0], "show-author"))
1142 return parse_enum(&opt_author, argv[2], author_map);
1144 if (!strcmp(argv[0], "show-date"))
1145 return parse_enum(&opt_date, argv[2], date_map);
1147 if (!strcmp(argv[0], "show-rev-graph"))
1148 return parse_bool(&opt_rev_graph, argv[2]);
1150 if (!strcmp(argv[0], "show-refs"))
1151 return parse_bool(&opt_show_refs, argv[2]);
1153 if (!strcmp(argv[0], "show-line-numbers"))
1154 return parse_bool(&opt_line_number, argv[2]);
1156 if (!strcmp(argv[0], "line-graphics"))
1157 return parse_enum(&opt_line_graphics, argv[2], graphic_map);
1159 if (!strcmp(argv[0], "line-number-interval"))
1160 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1162 if (!strcmp(argv[0], "author-width"))
1163 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1165 if (!strcmp(argv[0], "horizontal-scroll"))
1166 return parse_step(&opt_hscroll, argv[2]);
1168 if (!strcmp(argv[0], "split-view-height"))
1169 return parse_step(&opt_scale_split_view, argv[2]);
1171 if (!strcmp(argv[0], "tab-size"))
1172 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1174 if (!strcmp(argv[0], "commit-encoding"))
1175 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1177 if (!strcmp(argv[0], "status-untracked-dirs"))
1178 return parse_bool(&opt_untracked_dirs_content, argv[2]);
1180 return OPT_ERR_UNKNOWN_VARIABLE_NAME;
1181 }
1183 /* Wants: mode request key */
1184 static enum option_code
1185 option_bind_command(int argc, const char *argv[])
1186 {
1187 enum request request;
1188 int keymap = -1;
1189 int key;
1191 if (argc < 3)
1192 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1194 if (!set_keymap(&keymap, argv[0]))
1195 return OPT_ERR_UNKNOWN_KEY_MAP;
1197 key = get_key_value(argv[1]);
1198 if (key == ERR)
1199 return OPT_ERR_UNKNOWN_KEY;
1201 request = get_request(argv[2]);
1202 if (request == REQ_UNKNOWN) {
1203 static const struct enum_map obsolete[] = {
1204 ENUM_MAP("cherry-pick", REQ_NONE),
1205 ENUM_MAP("screen-resize", REQ_NONE),
1206 ENUM_MAP("tree-parent", REQ_PARENT),
1207 };
1208 int alias;
1210 if (map_enum(&alias, obsolete, argv[2])) {
1211 if (alias != REQ_NONE)
1212 add_keybinding(keymap, alias, key);
1213 return OPT_ERR_OBSOLETE_REQUEST_NAME;
1214 }
1215 }
1216 if (request == REQ_UNKNOWN && *argv[2]++ == '!')
1217 request = add_run_request(keymap, key, argv + 2);
1218 if (request == REQ_UNKNOWN)
1219 return OPT_ERR_UNKNOWN_REQUEST_NAME;
1221 add_keybinding(keymap, request, key);
1223 return OPT_OK;
1224 }
1226 static enum option_code
1227 set_option(const char *opt, char *value)
1228 {
1229 const char *argv[SIZEOF_ARG];
1230 int argc = 0;
1232 if (!argv_from_string(argv, &argc, value))
1233 return OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
1235 if (!strcmp(opt, "color"))
1236 return option_color_command(argc, argv);
1238 if (!strcmp(opt, "set"))
1239 return option_set_command(argc, argv);
1241 if (!strcmp(opt, "bind"))
1242 return option_bind_command(argc, argv);
1244 return OPT_ERR_UNKNOWN_OPTION_COMMAND;
1245 }
1247 struct config_state {
1248 int lineno;
1249 bool errors;
1250 };
1252 static int
1253 read_option(char *opt, size_t optlen, char *value, size_t valuelen, void *data)
1254 {
1255 struct config_state *config = data;
1256 enum option_code status = OPT_ERR_NO_OPTION_VALUE;
1258 config->lineno++;
1260 /* Check for comment markers, since read_properties() will
1261 * only ensure opt and value are split at first " \t". */
1262 optlen = strcspn(opt, "#");
1263 if (optlen == 0)
1264 return OK;
1266 if (opt[optlen] == 0) {
1267 /* Look for comment endings in the value. */
1268 size_t len = strcspn(value, "#");
1270 if (len < valuelen) {
1271 valuelen = len;
1272 value[valuelen] = 0;
1273 }
1275 status = set_option(opt, value);
1276 }
1278 if (status != OPT_OK) {
1279 warn("Error on line %d, near '%.*s': %s",
1280 config->lineno, (int) optlen, opt, option_errors[status]);
1281 config->errors = TRUE;
1282 }
1284 /* Always keep going if errors are encountered. */
1285 return OK;
1286 }
1288 static void
1289 load_option_file(const char *path)
1290 {
1291 struct config_state config = { 0, FALSE };
1292 struct io io;
1294 /* It's OK that the file doesn't exist. */
1295 if (!io_open(&io, "%s", path))
1296 return;
1298 if (io_load(&io, " \t", read_option, &config) == ERR ||
1299 config.errors == TRUE)
1300 warn("Errors while loading %s.", path);
1301 }
1303 static int
1304 load_options(void)
1305 {
1306 const char *home = getenv("HOME");
1307 const char *tigrc_user = getenv("TIGRC_USER");
1308 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1309 const char *tig_diff_opts = getenv("TIG_DIFF_OPTS");
1310 char buf[SIZEOF_STR];
1312 if (!tigrc_system)
1313 tigrc_system = SYSCONFDIR "/tigrc";
1314 load_option_file(tigrc_system);
1316 if (!tigrc_user) {
1317 if (!home || !string_format(buf, "%s/.tigrc", home))
1318 return ERR;
1319 tigrc_user = buf;
1320 }
1321 load_option_file(tigrc_user);
1323 /* Add _after_ loading config files to avoid adding run requests
1324 * that conflict with keybindings. */
1325 add_builtin_run_requests();
1327 if (!opt_diff_argv && tig_diff_opts && *tig_diff_opts) {
1328 static const char *diff_opts[SIZEOF_ARG] = { NULL };
1329 int argc = 0;
1331 if (!string_format(buf, "%s", tig_diff_opts) ||
1332 !argv_from_string(diff_opts, &argc, buf))
1333 die("TIG_DIFF_OPTS contains too many arguments");
1334 else if (!argv_copy(&opt_diff_argv, diff_opts))
1335 die("Failed to format TIG_DIFF_OPTS arguments");
1336 }
1338 return OK;
1339 }
1342 /*
1343 * The viewer
1344 */
1346 struct view;
1347 struct view_ops;
1349 /* The display array of active views and the index of the current view. */
1350 static struct view *display[2];
1351 static WINDOW *display_win[2];
1352 static WINDOW *display_title[2];
1353 static unsigned int current_view;
1355 #define foreach_displayed_view(view, i) \
1356 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1358 #define displayed_views() (display[1] != NULL ? 2 : 1)
1360 /* Current head and commit ID */
1361 static char ref_blob[SIZEOF_REF] = "";
1362 static char ref_commit[SIZEOF_REF] = "HEAD";
1363 static char ref_head[SIZEOF_REF] = "HEAD";
1364 static char ref_branch[SIZEOF_REF] = "";
1366 enum view_type {
1367 VIEW_MAIN,
1368 VIEW_DIFF,
1369 VIEW_LOG,
1370 VIEW_TREE,
1371 VIEW_BLOB,
1372 VIEW_BLAME,
1373 VIEW_BRANCH,
1374 VIEW_HELP,
1375 VIEW_PAGER,
1376 VIEW_STATUS,
1377 VIEW_STAGE,
1378 };
1380 struct view {
1381 enum view_type type; /* View type */
1382 const char *name; /* View name */
1383 const char *id; /* Points to either of ref_{head,commit,blob} */
1385 struct view_ops *ops; /* View operations */
1387 enum keymap keymap; /* What keymap does this view have */
1388 bool git_dir; /* Whether the view requires a git directory. */
1390 char ref[SIZEOF_REF]; /* Hovered commit reference */
1391 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1393 int height, width; /* The width and height of the main window */
1394 WINDOW *win; /* The main window */
1396 /* Navigation */
1397 unsigned long offset; /* Offset of the window top */
1398 unsigned long yoffset; /* Offset from the window side. */
1399 unsigned long lineno; /* Current line number */
1400 unsigned long p_offset; /* Previous offset of the window top */
1401 unsigned long p_yoffset;/* Previous offset from the window side */
1402 unsigned long p_lineno; /* Previous current line number */
1403 bool p_restore; /* Should the previous position be restored. */
1405 /* Searching */
1406 char grep[SIZEOF_STR]; /* Search string */
1407 regex_t *regex; /* Pre-compiled regexp */
1409 /* If non-NULL, points to the view that opened this view. If this view
1410 * is closed tig will switch back to the parent view. */
1411 struct view *parent;
1412 struct view *prev;
1414 /* Buffering */
1415 size_t lines; /* Total number of lines */
1416 struct line *line; /* Line index */
1417 unsigned int digits; /* Number of digits in the lines member. */
1419 /* Drawing */
1420 struct line *curline; /* Line currently being drawn. */
1421 enum line_type curtype; /* Attribute currently used for drawing. */
1422 unsigned long col; /* Column when drawing. */
1423 bool has_scrolled; /* View was scrolled. */
1425 /* Loading */
1426 const char **argv; /* Shell command arguments. */
1427 const char *dir; /* Directory from which to execute. */
1428 struct io io;
1429 struct io *pipe;
1430 time_t start_time;
1431 time_t update_secs;
1432 };
1434 enum open_flags {
1435 OPEN_DEFAULT = 0, /* Use default view switching. */
1436 OPEN_SPLIT = 1, /* Split current view. */
1437 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1438 OPEN_REFRESH = 16, /* Refresh view using previous command. */
1439 OPEN_PREPARED = 32, /* Open already prepared command. */
1440 OPEN_EXTRA = 64, /* Open extra data from command. */
1441 };
1443 struct view_ops {
1444 /* What type of content being displayed. Used in the title bar. */
1445 const char *type;
1446 /* Open and reads in all view content. */
1447 bool (*open)(struct view *view, enum open_flags flags);
1448 /* Read one line; updates view->line. */
1449 bool (*read)(struct view *view, char *data);
1450 /* Draw one line; @lineno must be < view->height. */
1451 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1452 /* Depending on view handle a special requests. */
1453 enum request (*request)(struct view *view, enum request request, struct line *line);
1454 /* Search for regexp in a line. */
1455 bool (*grep)(struct view *view, struct line *line);
1456 /* Select line */
1457 void (*select)(struct view *view, struct line *line);
1458 };
1460 static struct view_ops blame_ops;
1461 static struct view_ops blob_ops;
1462 static struct view_ops diff_ops;
1463 static struct view_ops help_ops;
1464 static struct view_ops log_ops;
1465 static struct view_ops main_ops;
1466 static struct view_ops pager_ops;
1467 static struct view_ops stage_ops;
1468 static struct view_ops status_ops;
1469 static struct view_ops tree_ops;
1470 static struct view_ops branch_ops;
1472 #define VIEW_STR(type, name, ref, ops, map, git) \
1473 { type, name, ref, ops, map, git }
1475 #define VIEW_(id, name, ops, git, ref) \
1476 VIEW_STR(VIEW_##id, name, ref, ops, KEYMAP_##id, git)
1478 static struct view views[] = {
1479 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1480 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1481 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1482 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1483 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1484 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1485 VIEW_(BRANCH, "branch", &branch_ops, TRUE, ref_head),
1486 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1487 VIEW_(PAGER, "pager", &pager_ops, FALSE, ""),
1488 VIEW_(STATUS, "status", &status_ops, TRUE, "status"),
1489 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1490 };
1492 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1494 #define foreach_view(view, i) \
1495 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1497 #define view_is_displayed(view) \
1498 (view == display[0] || view == display[1])
1500 static enum request
1501 view_request(struct view *view, enum request request)
1502 {
1503 if (!view || !view->lines)
1504 return request;
1505 return view->ops->request(view, request, &view->line[view->lineno]);
1506 }
1509 /*
1510 * View drawing.
1511 */
1513 static inline void
1514 set_view_attr(struct view *view, enum line_type type)
1515 {
1516 if (!view->curline->selected && view->curtype != type) {
1517 (void) wattrset(view->win, get_line_attr(type));
1518 wchgat(view->win, -1, 0, type, NULL);
1519 view->curtype = type;
1520 }
1521 }
1523 #define VIEW_MAX_LEN(view) ((view)->width + (view)->yoffset - (view)->col)
1525 static bool
1526 draw_chars(struct view *view, enum line_type type, const char *string,
1527 int max_len, bool use_tilde)
1528 {
1529 static char out_buffer[BUFSIZ * 2];
1530 int len = 0;
1531 int col = 0;
1532 int trimmed = FALSE;
1533 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1535 if (max_len <= 0)
1536 return VIEW_MAX_LEN(view) <= 0;
1538 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1540 set_view_attr(view, type);
1541 if (len > 0) {
1542 if (opt_iconv_out != ICONV_NONE) {
1543 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
1544 size_t inlen = len + 1;
1546 char *outbuf = out_buffer;
1547 size_t outlen = sizeof(out_buffer);
1549 size_t ret;
1551 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1552 if (ret != (size_t) -1) {
1553 string = out_buffer;
1554 len = sizeof(out_buffer) - outlen;
1555 }
1556 }
1558 waddnstr(view->win, string, len);
1560 if (trimmed && use_tilde) {
1561 set_view_attr(view, LINE_DELIMITER);
1562 waddch(view->win, '~');
1563 col++;
1564 }
1565 }
1567 view->col += col;
1568 return VIEW_MAX_LEN(view) <= 0;
1569 }
1571 static bool
1572 draw_space(struct view *view, enum line_type type, int max, int spaces)
1573 {
1574 static char space[] = " ";
1576 spaces = MIN(max, spaces);
1578 while (spaces > 0) {
1579 int len = MIN(spaces, sizeof(space) - 1);
1581 if (draw_chars(view, type, space, len, FALSE))
1582 return TRUE;
1583 spaces -= len;
1584 }
1586 return VIEW_MAX_LEN(view) <= 0;
1587 }
1589 static bool
1590 draw_text(struct view *view, enum line_type type, const char *string)
1591 {
1592 char text[SIZEOF_STR];
1594 do {
1595 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1597 if (draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE))
1598 return TRUE;
1599 string += pos;
1600 } while (*string);
1602 return VIEW_MAX_LEN(view) <= 0;
1603 }
1605 static bool
1606 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
1607 {
1608 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1609 int max = VIEW_MAX_LEN(view);
1610 int i;
1612 if (max < size)
1613 size = max;
1615 set_view_attr(view, type);
1616 /* Using waddch() instead of waddnstr() ensures that
1617 * they'll be rendered correctly for the cursor line. */
1618 for (i = skip; i < size; i++)
1619 waddch(view->win, graphic[i]);
1621 view->col += size;
1622 if (separator) {
1623 if (size < max && skip <= size)
1624 waddch(view->win, ' ');
1625 view->col++;
1626 }
1628 return VIEW_MAX_LEN(view) <= 0;
1629 }
1631 static bool
1632 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1633 {
1634 int max = MIN(VIEW_MAX_LEN(view), len);
1635 int col = view->col;
1637 if (!text)
1638 return draw_space(view, type, max, max);
1640 return draw_chars(view, type, text, max - 1, trim)
1641 || draw_space(view, LINE_DEFAULT, max - (view->col - col), max);
1642 }
1644 static bool
1645 draw_date(struct view *view, struct time *time)
1646 {
1647 const char *date = mkdate(time, opt_date);
1648 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
1650 if (opt_date == DATE_NO)
1651 return FALSE;
1653 return draw_field(view, LINE_DATE, date, cols, FALSE);
1654 }
1656 static bool
1657 draw_author(struct view *view, const char *author)
1658 {
1659 bool trim = author_trim(opt_author_cols);
1660 const char *text = mkauthor(author, opt_author_cols, opt_author);
1662 if (opt_author == AUTHOR_NO)
1663 return FALSE;
1665 return draw_field(view, LINE_AUTHOR, text, opt_author_cols, trim);
1666 }
1668 static bool
1669 draw_mode(struct view *view, mode_t mode)
1670 {
1671 const char *str = mkmode(mode);
1673 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
1674 }
1676 static bool
1677 draw_lineno(struct view *view, unsigned int lineno)
1678 {
1679 char number[10];
1680 int digits3 = view->digits < 3 ? 3 : view->digits;
1681 int max = MIN(VIEW_MAX_LEN(view), digits3);
1682 char *text = NULL;
1683 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
1685 lineno += view->offset + 1;
1686 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1687 static char fmt[] = "%1ld";
1689 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
1690 if (string_format(number, fmt, lineno))
1691 text = number;
1692 }
1693 if (text)
1694 draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
1695 else
1696 draw_space(view, LINE_LINE_NUMBER, max, digits3);
1697 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
1698 }
1700 static bool
1701 draw_refs(struct view *view, struct ref_list *refs)
1702 {
1703 size_t i;
1705 if (!opt_show_refs || !refs)
1706 return FALSE;
1708 for (i = 0; i < refs->size; i++) {
1709 struct ref *ref = refs->refs[i];
1710 enum line_type type;
1712 if (ref->head)
1713 type = LINE_MAIN_HEAD;
1714 else if (ref->ltag)
1715 type = LINE_MAIN_LOCAL_TAG;
1716 else if (ref->tag)
1717 type = LINE_MAIN_TAG;
1718 else if (ref->tracked)
1719 type = LINE_MAIN_TRACKED;
1720 else if (ref->remote)
1721 type = LINE_MAIN_REMOTE;
1722 else
1723 type = LINE_MAIN_REF;
1725 if (draw_text(view, type, "[") ||
1726 draw_text(view, type, ref->name) ||
1727 draw_text(view, type, "]"))
1728 return TRUE;
1730 if (draw_text(view, LINE_DEFAULT, " "))
1731 return TRUE;
1732 }
1734 return FALSE;
1735 }
1737 static bool
1738 draw_view_line(struct view *view, unsigned int lineno)
1739 {
1740 struct line *line;
1741 bool selected = (view->offset + lineno == view->lineno);
1743 assert(view_is_displayed(view));
1745 if (view->offset + lineno >= view->lines)
1746 return FALSE;
1748 line = &view->line[view->offset + lineno];
1750 wmove(view->win, lineno, 0);
1751 if (line->cleareol)
1752 wclrtoeol(view->win);
1753 view->col = 0;
1754 view->curline = line;
1755 view->curtype = LINE_NONE;
1756 line->selected = FALSE;
1757 line->dirty = line->cleareol = 0;
1759 if (selected) {
1760 set_view_attr(view, LINE_CURSOR);
1761 line->selected = TRUE;
1762 view->ops->select(view, line);
1763 }
1765 return view->ops->draw(view, line, lineno);
1766 }
1768 static void
1769 redraw_view_dirty(struct view *view)
1770 {
1771 bool dirty = FALSE;
1772 int lineno;
1774 for (lineno = 0; lineno < view->height; lineno++) {
1775 if (view->offset + lineno >= view->lines)
1776 break;
1777 if (!view->line[view->offset + lineno].dirty)
1778 continue;
1779 dirty = TRUE;
1780 if (!draw_view_line(view, lineno))
1781 break;
1782 }
1784 if (!dirty)
1785 return;
1786 wnoutrefresh(view->win);
1787 }
1789 static void
1790 redraw_view_from(struct view *view, int lineno)
1791 {
1792 assert(0 <= lineno && lineno < view->height);
1794 for (; lineno < view->height; lineno++) {
1795 if (!draw_view_line(view, lineno))
1796 break;
1797 }
1799 wnoutrefresh(view->win);
1800 }
1802 static void
1803 redraw_view(struct view *view)
1804 {
1805 werase(view->win);
1806 redraw_view_from(view, 0);
1807 }
1810 static void
1811 update_view_title(struct view *view)
1812 {
1813 char buf[SIZEOF_STR];
1814 char state[SIZEOF_STR];
1815 size_t bufpos = 0, statelen = 0;
1816 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
1818 assert(view_is_displayed(view));
1820 if (view->type != VIEW_STATUS && view->lines) {
1821 unsigned int view_lines = view->offset + view->height;
1822 unsigned int lines = view->lines
1823 ? MIN(view_lines, view->lines) * 100 / view->lines
1824 : 0;
1826 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
1827 view->ops->type,
1828 view->lineno + 1,
1829 view->lines,
1830 lines);
1832 }
1834 if (view->pipe) {
1835 time_t secs = time(NULL) - view->start_time;
1837 /* Three git seconds are a long time ... */
1838 if (secs > 2)
1839 string_format_from(state, &statelen, " loading %lds", secs);
1840 }
1842 string_format_from(buf, &bufpos, "[%s]", view->name);
1843 if (*view->ref && bufpos < view->width) {
1844 size_t refsize = strlen(view->ref);
1845 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1847 if (minsize < view->width)
1848 refsize = view->width - minsize + 7;
1849 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1850 }
1852 if (statelen && bufpos < view->width) {
1853 string_format_from(buf, &bufpos, "%s", state);
1854 }
1856 if (view == display[current_view])
1857 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
1858 else
1859 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
1861 mvwaddnstr(window, 0, 0, buf, bufpos);
1862 wclrtoeol(window);
1863 wnoutrefresh(window);
1864 }
1866 static int
1867 apply_step(double step, int value)
1868 {
1869 if (step >= 1)
1870 return (int) step;
1871 value *= step + 0.01;
1872 return value ? value : 1;
1873 }
1875 static void
1876 resize_display(void)
1877 {
1878 int offset, i;
1879 struct view *base = display[0];
1880 struct view *view = display[1] ? display[1] : display[0];
1882 /* Setup window dimensions */
1884 getmaxyx(stdscr, base->height, base->width);
1886 /* Make room for the status window. */
1887 base->height -= 1;
1889 if (view != base) {
1890 /* Horizontal split. */
1891 view->width = base->width;
1892 view->height = apply_step(opt_scale_split_view, base->height);
1893 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
1894 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
1895 base->height -= view->height;
1897 /* Make room for the title bar. */
1898 view->height -= 1;
1899 }
1901 /* Make room for the title bar. */
1902 base->height -= 1;
1904 offset = 0;
1906 foreach_displayed_view (view, i) {
1907 if (!display_win[i]) {
1908 display_win[i] = newwin(view->height, view->width, offset, 0);
1909 if (!display_win[i])
1910 die("Failed to create %s view", view->name);
1912 scrollok(display_win[i], FALSE);
1914 display_title[i] = newwin(1, view->width, offset + view->height, 0);
1915 if (!display_title[i])
1916 die("Failed to create title window");
1918 } else {
1919 wresize(display_win[i], view->height, view->width);
1920 mvwin(display_win[i], offset, 0);
1921 mvwin(display_title[i], offset + view->height, 0);
1922 }
1924 view->win = display_win[i];
1926 offset += view->height + 1;
1927 }
1928 }
1930 static void
1931 redraw_display(bool clear)
1932 {
1933 struct view *view;
1934 int i;
1936 foreach_displayed_view (view, i) {
1937 if (clear)
1938 wclear(view->win);
1939 redraw_view(view);
1940 update_view_title(view);
1941 }
1942 }
1945 /*
1946 * Option management
1947 */
1949 #define TOGGLE_MENU \
1950 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
1951 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
1952 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
1953 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
1954 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
1955 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
1957 static void
1958 toggle_option(enum request request)
1959 {
1960 const struct {
1961 enum request request;
1962 const struct enum_map *map;
1963 size_t map_size;
1964 } data[] = {
1965 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
1966 TOGGLE_MENU
1967 #undef TOGGLE_
1968 };
1969 const struct menu_item menu[] = {
1970 #define TOGGLE_(id, key, help, value, map) { key, help, value },
1971 TOGGLE_MENU
1972 #undef TOGGLE_
1973 { 0 }
1974 };
1975 int i = 0;
1977 if (request == REQ_OPTIONS) {
1978 if (!prompt_menu("Toggle option", menu, &i))
1979 return;
1980 } else {
1981 while (i < ARRAY_SIZE(data) && data[i].request != request)
1982 i++;
1983 if (i >= ARRAY_SIZE(data))
1984 die("Invalid request (%d)", request);
1985 }
1987 if (data[i].map != NULL) {
1988 unsigned int *opt = menu[i].data;
1990 *opt = (*opt + 1) % data[i].map_size;
1991 redraw_display(FALSE);
1992 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
1994 } else {
1995 bool *option = menu[i].data;
1997 *option = !*option;
1998 redraw_display(FALSE);
1999 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
2000 }
2001 }
2003 static void
2004 maximize_view(struct view *view, bool redraw)
2005 {
2006 memset(display, 0, sizeof(display));
2007 current_view = 0;
2008 display[current_view] = view;
2009 resize_display();
2010 if (redraw) {
2011 redraw_display(FALSE);
2012 report("");
2013 }
2014 }
2017 /*
2018 * Navigation
2019 */
2021 static bool
2022 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2023 {
2024 if (lineno >= view->lines)
2025 lineno = view->lines > 0 ? view->lines - 1 : 0;
2027 if (offset > lineno || offset + view->height <= lineno) {
2028 unsigned long half = view->height / 2;
2030 if (lineno > half)
2031 offset = lineno - half;
2032 else
2033 offset = 0;
2034 }
2036 if (offset != view->offset || lineno != view->lineno) {
2037 view->offset = offset;
2038 view->lineno = lineno;
2039 return TRUE;
2040 }
2042 return FALSE;
2043 }
2045 /* Scrolling backend */
2046 static void
2047 do_scroll_view(struct view *view, int lines)
2048 {
2049 bool redraw_current_line = FALSE;
2051 /* The rendering expects the new offset. */
2052 view->offset += lines;
2054 assert(0 <= view->offset && view->offset < view->lines);
2055 assert(lines);
2057 /* Move current line into the view. */
2058 if (view->lineno < view->offset) {
2059 view->lineno = view->offset;
2060 redraw_current_line = TRUE;
2061 } else if (view->lineno >= view->offset + view->height) {
2062 view->lineno = view->offset + view->height - 1;
2063 redraw_current_line = TRUE;
2064 }
2066 assert(view->offset <= view->lineno && view->lineno < view->lines);
2068 /* Redraw the whole screen if scrolling is pointless. */
2069 if (view->height < ABS(lines)) {
2070 redraw_view(view);
2072 } else {
2073 int line = lines > 0 ? view->height - lines : 0;
2074 int end = line + ABS(lines);
2076 scrollok(view->win, TRUE);
2077 wscrl(view->win, lines);
2078 scrollok(view->win, FALSE);
2080 while (line < end && draw_view_line(view, line))
2081 line++;
2083 if (redraw_current_line)
2084 draw_view_line(view, view->lineno - view->offset);
2085 wnoutrefresh(view->win);
2086 }
2088 view->has_scrolled = TRUE;
2089 report("");
2090 }
2092 /* Scroll frontend */
2093 static void
2094 scroll_view(struct view *view, enum request request)
2095 {
2096 int lines = 1;
2098 assert(view_is_displayed(view));
2100 switch (request) {
2101 case REQ_SCROLL_FIRST_COL:
2102 view->yoffset = 0;
2103 redraw_view_from(view, 0);
2104 report("");
2105 return;
2106 case REQ_SCROLL_LEFT:
2107 if (view->yoffset == 0) {
2108 report("Cannot scroll beyond the first column");
2109 return;
2110 }
2111 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2112 view->yoffset = 0;
2113 else
2114 view->yoffset -= apply_step(opt_hscroll, view->width);
2115 redraw_view_from(view, 0);
2116 report("");
2117 return;
2118 case REQ_SCROLL_RIGHT:
2119 view->yoffset += apply_step(opt_hscroll, view->width);
2120 redraw_view(view);
2121 report("");
2122 return;
2123 case REQ_SCROLL_PAGE_DOWN:
2124 lines = view->height;
2125 case REQ_SCROLL_LINE_DOWN:
2126 if (view->offset + lines > view->lines)
2127 lines = view->lines - view->offset;
2129 if (lines == 0 || view->offset + view->height >= view->lines) {
2130 report("Cannot scroll beyond the last line");
2131 return;
2132 }
2133 break;
2135 case REQ_SCROLL_PAGE_UP:
2136 lines = view->height;
2137 case REQ_SCROLL_LINE_UP:
2138 if (lines > view->offset)
2139 lines = view->offset;
2141 if (lines == 0) {
2142 report("Cannot scroll beyond the first line");
2143 return;
2144 }
2146 lines = -lines;
2147 break;
2149 default:
2150 die("request %d not handled in switch", request);
2151 }
2153 do_scroll_view(view, lines);
2154 }
2156 /* Cursor moving */
2157 static void
2158 move_view(struct view *view, enum request request)
2159 {
2160 int scroll_steps = 0;
2161 int steps;
2163 switch (request) {
2164 case REQ_MOVE_FIRST_LINE:
2165 steps = -view->lineno;
2166 break;
2168 case REQ_MOVE_LAST_LINE:
2169 steps = view->lines - view->lineno - 1;
2170 break;
2172 case REQ_MOVE_PAGE_UP:
2173 steps = view->height > view->lineno
2174 ? -view->lineno : -view->height;
2175 break;
2177 case REQ_MOVE_PAGE_DOWN:
2178 steps = view->lineno + view->height >= view->lines
2179 ? view->lines - view->lineno - 1 : view->height;
2180 break;
2182 case REQ_MOVE_UP:
2183 steps = -1;
2184 break;
2186 case REQ_MOVE_DOWN:
2187 steps = 1;
2188 break;
2190 default:
2191 die("request %d not handled in switch", request);
2192 }
2194 if (steps <= 0 && view->lineno == 0) {
2195 report("Cannot move beyond the first line");
2196 return;
2198 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2199 report("Cannot move beyond the last line");
2200 return;
2201 }
2203 /* Move the current line */
2204 view->lineno += steps;
2205 assert(0 <= view->lineno && view->lineno < view->lines);
2207 /* Check whether the view needs to be scrolled */
2208 if (view->lineno < view->offset ||
2209 view->lineno >= view->offset + view->height) {
2210 scroll_steps = steps;
2211 if (steps < 0 && -steps > view->offset) {
2212 scroll_steps = -view->offset;
2214 } else if (steps > 0) {
2215 if (view->lineno == view->lines - 1 &&
2216 view->lines > view->height) {
2217 scroll_steps = view->lines - view->offset - 1;
2218 if (scroll_steps >= view->height)
2219 scroll_steps -= view->height - 1;
2220 }
2221 }
2222 }
2224 if (!view_is_displayed(view)) {
2225 view->offset += scroll_steps;
2226 assert(0 <= view->offset && view->offset < view->lines);
2227 view->ops->select(view, &view->line[view->lineno]);
2228 return;
2229 }
2231 /* Repaint the old "current" line if we be scrolling */
2232 if (ABS(steps) < view->height)
2233 draw_view_line(view, view->lineno - steps - view->offset);
2235 if (scroll_steps) {
2236 do_scroll_view(view, scroll_steps);
2237 return;
2238 }
2240 /* Draw the current line */
2241 draw_view_line(view, view->lineno - view->offset);
2243 wnoutrefresh(view->win);
2244 report("");
2245 }
2248 /*
2249 * Searching
2250 */
2252 static void search_view(struct view *view, enum request request);
2254 static bool
2255 grep_text(struct view *view, const char *text[])
2256 {
2257 regmatch_t pmatch;
2258 size_t i;
2260 for (i = 0; text[i]; i++)
2261 if (*text[i] &&
2262 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2263 return TRUE;
2264 return FALSE;
2265 }
2267 static void
2268 select_view_line(struct view *view, unsigned long lineno)
2269 {
2270 unsigned long old_lineno = view->lineno;
2271 unsigned long old_offset = view->offset;
2273 if (goto_view_line(view, view->offset, lineno)) {
2274 if (view_is_displayed(view)) {
2275 if (old_offset != view->offset) {
2276 redraw_view(view);
2277 } else {
2278 draw_view_line(view, old_lineno - view->offset);
2279 draw_view_line(view, view->lineno - view->offset);
2280 wnoutrefresh(view->win);
2281 }
2282 } else {
2283 view->ops->select(view, &view->line[view->lineno]);
2284 }
2285 }
2286 }
2288 static void
2289 find_next(struct view *view, enum request request)
2290 {
2291 unsigned long lineno = view->lineno;
2292 int direction;
2294 if (!*view->grep) {
2295 if (!*opt_search)
2296 report("No previous search");
2297 else
2298 search_view(view, request);
2299 return;
2300 }
2302 switch (request) {
2303 case REQ_SEARCH:
2304 case REQ_FIND_NEXT:
2305 direction = 1;
2306 break;
2308 case REQ_SEARCH_BACK:
2309 case REQ_FIND_PREV:
2310 direction = -1;
2311 break;
2313 default:
2314 return;
2315 }
2317 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2318 lineno += direction;
2320 /* Note, lineno is unsigned long so will wrap around in which case it
2321 * will become bigger than view->lines. */
2322 for (; lineno < view->lines; lineno += direction) {
2323 if (view->ops->grep(view, &view->line[lineno])) {
2324 select_view_line(view, lineno);
2325 report("Line %ld matches '%s'", lineno + 1, view->grep);
2326 return;
2327 }
2328 }
2330 report("No match found for '%s'", view->grep);
2331 }
2333 static void
2334 search_view(struct view *view, enum request request)
2335 {
2336 int regex_err;
2338 if (view->regex) {
2339 regfree(view->regex);
2340 *view->grep = 0;
2341 } else {
2342 view->regex = calloc(1, sizeof(*view->regex));
2343 if (!view->regex)
2344 return;
2345 }
2347 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2348 if (regex_err != 0) {
2349 char buf[SIZEOF_STR] = "unknown error";
2351 regerror(regex_err, view->regex, buf, sizeof(buf));
2352 report("Search failed: %s", buf);
2353 return;
2354 }
2356 string_copy(view->grep, opt_search);
2358 find_next(view, request);
2359 }
2361 /*
2362 * Incremental updating
2363 */
2365 static void
2366 reset_view(struct view *view)
2367 {
2368 int i;
2370 for (i = 0; i < view->lines; i++)
2371 free(view->line[i].data);
2372 free(view->line);
2374 view->p_offset = view->offset;
2375 view->p_yoffset = view->yoffset;
2376 view->p_lineno = view->lineno;
2378 view->line = NULL;
2379 view->offset = 0;
2380 view->yoffset = 0;
2381 view->lines = 0;
2382 view->lineno = 0;
2383 view->vid[0] = 0;
2384 view->update_secs = 0;
2385 }
2387 static const char *
2388 format_arg(const char *name)
2389 {
2390 static struct {
2391 const char *name;
2392 size_t namelen;
2393 const char *value;
2394 const char *value_if_empty;
2395 } vars[] = {
2396 #define FORMAT_VAR(name, value, value_if_empty) \
2397 { name, STRING_SIZE(name), value, value_if_empty }
2398 FORMAT_VAR("%(directory)", opt_path, "."),
2399 FORMAT_VAR("%(file)", opt_file, ""),
2400 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2401 FORMAT_VAR("%(head)", ref_head, ""),
2402 FORMAT_VAR("%(commit)", ref_commit, ""),
2403 FORMAT_VAR("%(blob)", ref_blob, ""),
2404 FORMAT_VAR("%(branch)", ref_branch, ""),
2405 };
2406 int i;
2408 for (i = 0; i < ARRAY_SIZE(vars); i++)
2409 if (!strncmp(name, vars[i].name, vars[i].namelen))
2410 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2412 report("Unknown replacement: `%s`", name);
2413 return NULL;
2414 }
2416 static bool
2417 format_argv(const char ***dst_argv, const char *src_argv[], bool first)
2418 {
2419 char buf[SIZEOF_STR];
2420 int argc;
2422 argv_free(*dst_argv);
2424 for (argc = 0; src_argv[argc]; argc++) {
2425 const char *arg = src_argv[argc];
2426 size_t bufpos = 0;
2428 if (!strcmp(arg, "%(fileargs)")) {
2429 if (!argv_append_array(dst_argv, opt_file_argv))
2430 break;
2431 continue;
2433 } else if (!strcmp(arg, "%(diffargs)")) {
2434 if (!argv_append_array(dst_argv, opt_diff_argv))
2435 break;
2436 continue;
2438 } else if (!strcmp(arg, "%(blameargs)")) {
2439 if (!argv_append_array(dst_argv, opt_blame_argv))
2440 break;
2441 continue;
2443 } else if (!strcmp(arg, "%(revargs)") ||
2444 (first && !strcmp(arg, "%(commit)"))) {
2445 if (!argv_append_array(dst_argv, opt_rev_argv))
2446 break;
2447 continue;
2448 }
2450 while (arg) {
2451 char *next = strstr(arg, "%(");
2452 int len = next - arg;
2453 const char *value;
2455 if (!next) {
2456 len = strlen(arg);
2457 value = "";
2459 } else {
2460 value = format_arg(next);
2462 if (!value) {
2463 return FALSE;
2464 }
2465 }
2467 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2468 return FALSE;
2470 arg = next ? strchr(next, ')') + 1 : NULL;
2471 }
2473 if (!argv_append(dst_argv, buf))
2474 break;
2475 }
2477 return src_argv[argc] == NULL;
2478 }
2480 static bool
2481 restore_view_position(struct view *view)
2482 {
2483 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2484 return FALSE;
2486 /* Changing the view position cancels the restoring. */
2487 /* FIXME: Changing back to the first line is not detected. */
2488 if (view->offset != 0 || view->lineno != 0) {
2489 view->p_restore = FALSE;
2490 return FALSE;
2491 }
2493 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2494 view_is_displayed(view))
2495 werase(view->win);
2497 view->yoffset = view->p_yoffset;
2498 view->p_restore = FALSE;
2500 return TRUE;
2501 }
2503 static void
2504 end_update(struct view *view, bool force)
2505 {
2506 if (!view->pipe)
2507 return;
2508 while (!view->ops->read(view, NULL))
2509 if (!force)
2510 return;
2511 if (force)
2512 io_kill(view->pipe);
2513 io_done(view->pipe);
2514 view->pipe = NULL;
2515 }
2517 static void
2518 setup_update(struct view *view, const char *vid)
2519 {
2520 reset_view(view);
2521 string_copy_rev(view->vid, vid);
2522 view->pipe = &view->io;
2523 view->start_time = time(NULL);
2524 }
2526 static bool
2527 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
2528 {
2529 bool extra = !!(flags & (OPEN_EXTRA));
2530 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED | OPEN_EXTRA));
2531 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2533 if (!reload && !strcmp(view->vid, view->id))
2534 return TRUE;
2536 if (view->pipe) {
2537 if (extra)
2538 io_done(view->pipe);
2539 else
2540 end_update(view, TRUE);
2541 }
2543 if (!refresh) {
2544 view->dir = dir;
2545 if (!format_argv(&view->argv, argv, !view->prev))
2546 return FALSE;
2548 /* Put the current ref_* value to the view title ref
2549 * member. This is needed by the blob view. Most other
2550 * views sets it automatically after loading because the
2551 * first line is a commit line. */
2552 string_copy_rev(view->ref, view->id);
2553 }
2555 if (view->argv && view->argv[0] &&
2556 !io_run(&view->io, IO_RD, view->dir, view->argv))
2557 return FALSE;
2559 if (!extra)
2560 setup_update(view, view->id);
2562 return TRUE;
2563 }
2565 static bool
2566 view_open(struct view *view, enum open_flags flags)
2567 {
2568 return begin_update(view, NULL, NULL, flags);
2569 }
2571 static bool
2572 update_view(struct view *view)
2573 {
2574 char out_buffer[BUFSIZ * 2];
2575 char *line;
2576 /* Clear the view and redraw everything since the tree sorting
2577 * might have rearranged things. */
2578 bool redraw = view->lines == 0;
2579 bool can_read = TRUE;
2581 if (!view->pipe)
2582 return TRUE;
2584 if (!io_can_read(view->pipe, FALSE)) {
2585 if (view->lines == 0 && view_is_displayed(view)) {
2586 time_t secs = time(NULL) - view->start_time;
2588 if (secs > 1 && secs > view->update_secs) {
2589 if (view->update_secs == 0)
2590 redraw_view(view);
2591 update_view_title(view);
2592 view->update_secs = secs;
2593 }
2594 }
2595 return TRUE;
2596 }
2598 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2599 if (opt_iconv_in != ICONV_NONE) {
2600 ICONV_CONST char *inbuf = line;
2601 size_t inlen = strlen(line) + 1;
2603 char *outbuf = out_buffer;
2604 size_t outlen = sizeof(out_buffer);
2606 size_t ret;
2608 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2609 if (ret != (size_t) -1)
2610 line = out_buffer;
2611 }
2613 if (!view->ops->read(view, line)) {
2614 report("Allocation failure");
2615 end_update(view, TRUE);
2616 return FALSE;
2617 }
2618 }
2620 {
2621 unsigned long lines = view->lines;
2622 int digits;
2624 for (digits = 0; lines; digits++)
2625 lines /= 10;
2627 /* Keep the displayed view in sync with line number scaling. */
2628 if (digits != view->digits) {
2629 view->digits = digits;
2630 if (opt_line_number || view->type == VIEW_BLAME)
2631 redraw = TRUE;
2632 }
2633 }
2635 if (io_error(view->pipe)) {
2636 report("Failed to read: %s", io_strerror(view->pipe));
2637 end_update(view, TRUE);
2639 } else if (io_eof(view->pipe)) {
2640 if (view_is_displayed(view))
2641 report("");
2642 end_update(view, FALSE);
2643 }
2645 if (restore_view_position(view))
2646 redraw = TRUE;
2648 if (!view_is_displayed(view))
2649 return TRUE;
2651 if (redraw)
2652 redraw_view_from(view, 0);
2653 else
2654 redraw_view_dirty(view);
2656 /* Update the title _after_ the redraw so that if the redraw picks up a
2657 * commit reference in view->ref it'll be available here. */
2658 update_view_title(view);
2659 return TRUE;
2660 }
2662 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2664 static struct line *
2665 add_line_data(struct view *view, void *data, enum line_type type)
2666 {
2667 struct line *line;
2669 if (!realloc_lines(&view->line, view->lines, 1))
2670 return NULL;
2672 line = &view->line[view->lines++];
2673 memset(line, 0, sizeof(*line));
2674 line->type = type;
2675 line->data = data;
2676 line->dirty = 1;
2678 return line;
2679 }
2681 static struct line *
2682 add_line_text(struct view *view, const char *text, enum line_type type)
2683 {
2684 char *data = text ? strdup(text) : NULL;
2686 return data ? add_line_data(view, data, type) : NULL;
2687 }
2689 static struct line *
2690 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2691 {
2692 char buf[SIZEOF_STR];
2693 va_list args;
2695 va_start(args, fmt);
2696 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2697 buf[0] = 0;
2698 va_end(args);
2700 return buf[0] ? add_line_text(view, buf, type) : NULL;
2701 }
2703 /*
2704 * View opening
2705 */
2707 static void
2708 load_view(struct view *view, enum open_flags flags)
2709 {
2710 if (view->pipe)
2711 end_update(view, TRUE);
2712 if (!view->ops->open(view, flags)) {
2713 report("Failed to load %s view", view->name);
2714 return;
2715 }
2716 restore_view_position(view);
2718 if (view->pipe && view->lines == 0) {
2719 /* Clear the old view and let the incremental updating refill
2720 * the screen. */
2721 werase(view->win);
2722 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2723 report("");
2724 } else if (view_is_displayed(view)) {
2725 redraw_view(view);
2726 report("");
2727 }
2728 }
2730 #define refresh_view(view) load_view(view, OPEN_REFRESH)
2731 #define reload_view(view) load_view(view, OPEN_RELOAD)
2733 static void
2734 split_view(struct view *prev, struct view *view)
2735 {
2736 display[1] = view;
2737 current_view = 1;
2738 view->parent = prev;
2739 resize_display();
2741 if (prev->lineno - prev->offset >= prev->height) {
2742 /* Take the title line into account. */
2743 int lines = prev->lineno - prev->offset - prev->height + 1;
2745 /* Scroll the view that was split if the current line is
2746 * outside the new limited view. */
2747 do_scroll_view(prev, lines);
2748 }
2750 if (view != prev && view_is_displayed(prev)) {
2751 /* "Blur" the previous view. */
2752 update_view_title(prev);
2753 }
2754 }
2756 static void
2757 open_view(struct view *prev, enum request request, enum open_flags flags)
2758 {
2759 bool split = !!(flags & OPEN_SPLIT);
2760 bool reload = !!(flags & (OPEN_RELOAD | OPEN_PREPARED));
2761 struct view *view = VIEW(request);
2762 int nviews = displayed_views();
2764 assert(flags ^ OPEN_REFRESH);
2766 if (view == prev && nviews == 1 && !reload) {
2767 report("Already in %s view", view->name);
2768 return;
2769 }
2771 if (view->git_dir && !opt_git_dir[0]) {
2772 report("The %s view is disabled in pager view", view->name);
2773 return;
2774 }
2776 if (split) {
2777 split_view(prev, view);
2778 } else {
2779 maximize_view(view, FALSE);
2780 }
2782 /* No prev signals that this is the first loaded view. */
2783 if (prev && view != prev) {
2784 view->prev = prev;
2785 }
2787 load_view(view, flags);
2788 }
2790 static void
2791 open_argv(struct view *prev, struct view *view, const char *argv[], const char *dir, enum open_flags flags)
2792 {
2793 enum request request = view - views + REQ_OFFSET + 1;
2795 if (view->pipe)
2796 end_update(view, TRUE);
2797 view->dir = dir;
2799 if (!argv_copy(&view->argv, argv)) {
2800 report("Failed to open %s view: %s", view->name, io_strerror(&view->io));
2801 } else {
2802 open_view(prev, request, flags | OPEN_PREPARED);
2803 }
2804 }
2806 static void
2807 open_file(struct view *prev, struct view *view, const char *file, enum open_flags flags)
2808 {
2809 const char *file_argv[] = { opt_cdup, file , NULL };
2811 open_argv(prev, view, file_argv, opt_cdup, flags);
2812 }
2814 static void
2815 open_external_viewer(const char *argv[], const char *dir)
2816 {
2817 def_prog_mode(); /* save current tty modes */
2818 endwin(); /* restore original tty modes */
2819 io_run_fg(argv, dir);
2820 fprintf(stderr, "Press Enter to continue");
2821 getc(opt_tty);
2822 reset_prog_mode();
2823 redraw_display(TRUE);
2824 }
2826 static void
2827 open_mergetool(const char *file)
2828 {
2829 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2831 open_external_viewer(mergetool_argv, opt_cdup);
2832 }
2834 static void
2835 open_editor(const char *file)
2836 {
2837 const char *editor_argv[] = { "vi", file, NULL };
2838 const char *editor;
2840 editor = getenv("GIT_EDITOR");
2841 if (!editor && *opt_editor)
2842 editor = opt_editor;
2843 if (!editor)
2844 editor = getenv("VISUAL");
2845 if (!editor)
2846 editor = getenv("EDITOR");
2847 if (!editor)
2848 editor = "vi";
2850 editor_argv[0] = editor;
2851 open_external_viewer(editor_argv, opt_cdup);
2852 }
2854 static void
2855 open_run_request(enum request request)
2856 {
2857 struct run_request *req = get_run_request(request);
2858 const char **argv = NULL;
2860 if (!req) {
2861 report("Unknown run request");
2862 return;
2863 }
2865 if (format_argv(&argv, req->argv, FALSE))
2866 open_external_viewer(argv, NULL);
2867 if (argv)
2868 argv_free(argv);
2869 free(argv);
2870 }
2872 /*
2873 * User request switch noodle
2874 */
2876 static int
2877 view_driver(struct view *view, enum request request)
2878 {
2879 int i;
2881 if (request == REQ_NONE)
2882 return TRUE;
2884 if (request > REQ_NONE) {
2885 open_run_request(request);
2886 view_request(view, REQ_REFRESH);
2887 return TRUE;
2888 }
2890 request = view_request(view, request);
2891 if (request == REQ_NONE)
2892 return TRUE;
2894 switch (request) {
2895 case REQ_MOVE_UP:
2896 case REQ_MOVE_DOWN:
2897 case REQ_MOVE_PAGE_UP:
2898 case REQ_MOVE_PAGE_DOWN:
2899 case REQ_MOVE_FIRST_LINE:
2900 case REQ_MOVE_LAST_LINE:
2901 move_view(view, request);
2902 break;
2904 case REQ_SCROLL_FIRST_COL:
2905 case REQ_SCROLL_LEFT:
2906 case REQ_SCROLL_RIGHT:
2907 case REQ_SCROLL_LINE_DOWN:
2908 case REQ_SCROLL_LINE_UP:
2909 case REQ_SCROLL_PAGE_DOWN:
2910 case REQ_SCROLL_PAGE_UP:
2911 scroll_view(view, request);
2912 break;
2914 case REQ_VIEW_BLAME:
2915 if (!opt_file[0]) {
2916 report("No file chosen, press %s to open tree view",
2917 get_key(view->keymap, REQ_VIEW_TREE));
2918 break;
2919 }
2920 open_view(view, request, OPEN_DEFAULT);
2921 break;
2923 case REQ_VIEW_BLOB:
2924 if (!ref_blob[0]) {
2925 report("No file chosen, press %s to open tree view",
2926 get_key(view->keymap, REQ_VIEW_TREE));
2927 break;
2928 }
2929 open_view(view, request, OPEN_DEFAULT);
2930 break;
2932 case REQ_VIEW_PAGER:
2933 if (view == NULL) {
2934 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2935 die("Failed to open stdin");
2936 open_view(view, request, OPEN_PREPARED);
2937 break;
2938 }
2940 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2941 report("No pager content, press %s to run command from prompt",
2942 get_key(view->keymap, REQ_PROMPT));
2943 break;
2944 }
2945 open_view(view, request, OPEN_DEFAULT);
2946 break;
2948 case REQ_VIEW_STAGE:
2949 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2950 report("No stage content, press %s to open the status view and choose file",
2951 get_key(view->keymap, REQ_VIEW_STATUS));
2952 break;
2953 }
2954 open_view(view, request, OPEN_DEFAULT);
2955 break;
2957 case REQ_VIEW_STATUS:
2958 if (opt_is_inside_work_tree == FALSE) {
2959 report("The status view requires a working tree");
2960 break;
2961 }
2962 open_view(view, request, OPEN_DEFAULT);
2963 break;
2965 case REQ_VIEW_MAIN:
2966 case REQ_VIEW_DIFF:
2967 case REQ_VIEW_LOG:
2968 case REQ_VIEW_TREE:
2969 case REQ_VIEW_HELP:
2970 case REQ_VIEW_BRANCH:
2971 open_view(view, request, OPEN_DEFAULT);
2972 break;
2974 case REQ_NEXT:
2975 case REQ_PREVIOUS:
2976 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2978 if (view->parent) {
2979 int line;
2981 view = view->parent;
2982 line = view->lineno;
2983 move_view(view, request);
2984 if (view_is_displayed(view))
2985 update_view_title(view);
2986 if (line != view->lineno)
2987 view_request(view, REQ_ENTER);
2988 } else {
2989 move_view(view, request);
2990 }
2991 break;
2993 case REQ_VIEW_NEXT:
2994 {
2995 int nviews = displayed_views();
2996 int next_view = (current_view + 1) % nviews;
2998 if (next_view == current_view) {
2999 report("Only one view is displayed");
3000 break;
3001 }
3003 current_view = next_view;
3004 /* Blur out the title of the previous view. */
3005 update_view_title(view);
3006 report("");
3007 break;
3008 }
3009 case REQ_REFRESH:
3010 report("Refreshing is not yet supported for the %s view", view->name);
3011 break;
3013 case REQ_MAXIMIZE:
3014 if (displayed_views() == 2)
3015 maximize_view(view, TRUE);
3016 break;
3018 case REQ_OPTIONS:
3019 case REQ_TOGGLE_LINENO:
3020 case REQ_TOGGLE_DATE:
3021 case REQ_TOGGLE_AUTHOR:
3022 case REQ_TOGGLE_GRAPHIC:
3023 case REQ_TOGGLE_REV_GRAPH:
3024 case REQ_TOGGLE_REFS:
3025 toggle_option(request);
3026 break;
3028 case REQ_TOGGLE_SORT_FIELD:
3029 case REQ_TOGGLE_SORT_ORDER:
3030 report("Sorting is not yet supported for the %s view", view->name);
3031 break;
3033 case REQ_SEARCH:
3034 case REQ_SEARCH_BACK:
3035 search_view(view, request);
3036 break;
3038 case REQ_FIND_NEXT:
3039 case REQ_FIND_PREV:
3040 find_next(view, request);
3041 break;
3043 case REQ_STOP_LOADING:
3044 foreach_view(view, i) {
3045 if (view->pipe)
3046 report("Stopped loading the %s view", view->name),
3047 end_update(view, TRUE);
3048 }
3049 break;
3051 case REQ_SHOW_VERSION:
3052 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3053 return TRUE;
3055 case REQ_SCREEN_REDRAW:
3056 redraw_display(TRUE);
3057 break;
3059 case REQ_EDIT:
3060 report("Nothing to edit");
3061 break;
3063 case REQ_ENTER:
3064 report("Nothing to enter");
3065 break;
3067 case REQ_VIEW_CLOSE:
3068 /* XXX: Mark closed views by letting view->prev point to the
3069 * view itself. Parents to closed view should never be
3070 * followed. */
3071 if (view->prev && view->prev != view) {
3072 maximize_view(view->prev, TRUE);
3073 view->prev = view;
3074 break;
3075 }
3076 /* Fall-through */
3077 case REQ_QUIT:
3078 return FALSE;
3080 default:
3081 report("Unknown key, press %s for help",
3082 get_key(view->keymap, REQ_VIEW_HELP));
3083 return TRUE;
3084 }
3086 return TRUE;
3087 }
3090 /*
3091 * View backend utilities
3092 */
3094 enum sort_field {
3095 ORDERBY_NAME,
3096 ORDERBY_DATE,
3097 ORDERBY_AUTHOR,
3098 };
3100 struct sort_state {
3101 const enum sort_field *fields;
3102 size_t size, current;
3103 bool reverse;
3104 };
3106 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3107 #define get_sort_field(state) ((state).fields[(state).current])
3108 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3110 static void
3111 sort_view(struct view *view, enum request request, struct sort_state *state,
3112 int (*compare)(const void *, const void *))
3113 {
3114 switch (request) {
3115 case REQ_TOGGLE_SORT_FIELD:
3116 state->current = (state->current + 1) % state->size;
3117 break;
3119 case REQ_TOGGLE_SORT_ORDER:
3120 state->reverse = !state->reverse;
3121 break;
3122 default:
3123 die("Not a sort request");
3124 }
3126 qsort(view->line, view->lines, sizeof(*view->line), compare);
3127 redraw_view(view);
3128 }
3130 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3132 /* Small author cache to reduce memory consumption. It uses binary
3133 * search to lookup or find place to position new entries. No entries
3134 * are ever freed. */
3135 static const char *
3136 get_author(const char *name)
3137 {
3138 static const char **authors;
3139 static size_t authors_size;
3140 int from = 0, to = authors_size - 1;
3142 while (from <= to) {
3143 size_t pos = (to + from) / 2;
3144 int cmp = strcmp(name, authors[pos]);
3146 if (!cmp)
3147 return authors[pos];
3149 if (cmp < 0)
3150 to = pos - 1;
3151 else
3152 from = pos + 1;
3153 }
3155 if (!realloc_authors(&authors, authors_size, 1))
3156 return NULL;
3157 name = strdup(name);
3158 if (!name)
3159 return NULL;
3161 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3162 authors[from] = name;
3163 authors_size++;
3165 return name;
3166 }
3168 static void
3169 parse_timesec(struct time *time, const char *sec)
3170 {
3171 time->sec = (time_t) atol(sec);
3172 }
3174 static void
3175 parse_timezone(struct time *time, const char *zone)
3176 {
3177 long tz;
3179 tz = ('0' - zone[1]) * 60 * 60 * 10;
3180 tz += ('0' - zone[2]) * 60 * 60;
3181 tz += ('0' - zone[3]) * 60 * 10;
3182 tz += ('0' - zone[4]) * 60;
3184 if (zone[0] == '-')
3185 tz = -tz;
3187 time->tz = tz;
3188 time->sec -= tz;
3189 }
3191 /* Parse author lines where the name may be empty:
3192 * author <email@address.tld> 1138474660 +0100
3193 */
3194 static void
3195 parse_author_line(char *ident, const char **author, struct time *time)
3196 {
3197 char *nameend = strchr(ident, '<');
3198 char *emailend = strchr(ident, '>');
3200 if (nameend && emailend)
3201 *nameend = *emailend = 0;
3202 ident = chomp_string(ident);
3203 if (!*ident) {
3204 if (nameend)
3205 ident = chomp_string(nameend + 1);
3206 if (!*ident)
3207 ident = "Unknown";
3208 }
3210 *author = get_author(ident);
3212 /* Parse epoch and timezone */
3213 if (emailend && emailend[1] == ' ') {
3214 char *secs = emailend + 2;
3215 char *zone = strchr(secs, ' ');
3217 parse_timesec(time, secs);
3219 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3220 parse_timezone(time, zone + 1);
3221 }
3222 }
3224 /*
3225 * Pager backend
3226 */
3228 static bool
3229 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3230 {
3231 if (opt_line_number && draw_lineno(view, lineno))
3232 return TRUE;
3234 draw_text(view, line->type, line->data);
3235 return TRUE;
3236 }
3238 static bool
3239 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3240 {
3241 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3242 char ref[SIZEOF_STR];
3244 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3245 return TRUE;
3247 /* This is the only fatal call, since it can "corrupt" the buffer. */
3248 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3249 return FALSE;
3251 return TRUE;
3252 }
3254 static void
3255 add_pager_refs(struct view *view, struct line *line)
3256 {
3257 char buf[SIZEOF_STR];
3258 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3259 struct ref_list *list;
3260 size_t bufpos = 0, i;
3261 const char *sep = "Refs: ";
3262 bool is_tag = FALSE;
3264 assert(line->type == LINE_COMMIT);
3266 list = get_ref_list(commit_id);
3267 if (!list) {
3268 if (view->type == VIEW_DIFF)
3269 goto try_add_describe_ref;
3270 return;
3271 }
3273 for (i = 0; i < list->size; i++) {
3274 struct ref *ref = list->refs[i];
3275 const char *fmt = ref->tag ? "%s[%s]" :
3276 ref->remote ? "%s<%s>" : "%s%s";
3278 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3279 return;
3280 sep = ", ";
3281 if (ref->tag)
3282 is_tag = TRUE;
3283 }
3285 if (!is_tag && view->type == VIEW_DIFF) {
3286 try_add_describe_ref:
3287 /* Add <tag>-g<commit_id> "fake" reference. */
3288 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3289 return;
3290 }
3292 if (bufpos == 0)
3293 return;
3295 add_line_text(view, buf, LINE_PP_REFS);
3296 }
3298 static bool
3299 pager_read(struct view *view, char *data)
3300 {
3301 struct line *line;
3303 if (!data)
3304 return TRUE;
3306 line = add_line_text(view, data, get_line_type(data));
3307 if (!line)
3308 return FALSE;
3310 if (line->type == LINE_COMMIT &&
3311 (view->type == VIEW_DIFF ||
3312 view->type == VIEW_LOG))
3313 add_pager_refs(view, line);
3315 return TRUE;
3316 }
3318 static enum request
3319 pager_request(struct view *view, enum request request, struct line *line)
3320 {
3321 int split = 0;
3323 if (request != REQ_ENTER)
3324 return request;
3326 if (line->type == LINE_COMMIT &&
3327 (view->type == VIEW_LOG ||
3328 view->type == VIEW_PAGER)) {
3329 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3330 split = 1;
3331 }
3333 /* Always scroll the view even if it was split. That way
3334 * you can use Enter to scroll through the log view and
3335 * split open each commit diff. */
3336 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3338 /* FIXME: A minor workaround. Scrolling the view will call report("")
3339 * but if we are scrolling a non-current view this won't properly
3340 * update the view title. */
3341 if (split)
3342 update_view_title(view);
3344 return REQ_NONE;
3345 }
3347 static bool
3348 pager_grep(struct view *view, struct line *line)
3349 {
3350 const char *text[] = { line->data, NULL };
3352 return grep_text(view, text);
3353 }
3355 static void
3356 pager_select(struct view *view, struct line *line)
3357 {
3358 if (line->type == LINE_COMMIT) {
3359 char *text = (char *)line->data + STRING_SIZE("commit ");
3361 if (view->type != VIEW_PAGER)
3362 string_copy_rev(view->ref, text);
3363 string_copy_rev(ref_commit, text);
3364 }
3365 }
3367 static struct view_ops pager_ops = {
3368 "line",
3369 view_open,
3370 pager_read,
3371 pager_draw,
3372 pager_request,
3373 pager_grep,
3374 pager_select,
3375 };
3377 static bool
3378 log_open(struct view *view, enum open_flags flags)
3379 {
3380 static const char *log_argv[] = {
3381 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3382 };
3384 return begin_update(view, NULL, log_argv, flags);
3385 }
3387 static enum request
3388 log_request(struct view *view, enum request request, struct line *line)
3389 {
3390 switch (request) {
3391 case REQ_REFRESH:
3392 load_refs();
3393 refresh_view(view);
3394 return REQ_NONE;
3395 default:
3396 return pager_request(view, request, line);
3397 }
3398 }
3400 static struct view_ops log_ops = {
3401 "line",
3402 log_open,
3403 pager_read,
3404 pager_draw,
3405 log_request,
3406 pager_grep,
3407 pager_select,
3408 };
3410 static bool
3411 diff_open(struct view *view, enum open_flags flags)
3412 {
3413 static const char *diff_argv[] = {
3414 "git", "show", "--pretty=fuller", "--no-color", "--root",
3415 "--patch-with-stat", "--find-copies-harder", "-C",
3416 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3417 };
3419 return begin_update(view, NULL, diff_argv, flags);
3420 }
3422 static bool
3423 diff_read(struct view *view, char *data)
3424 {
3425 if (!data) {
3426 /* Fall back to retry if no diff will be shown. */
3427 if (view->lines == 0 && opt_file_argv) {
3428 int pos = argv_size(view->argv)
3429 - argv_size(opt_file_argv) - 1;
3431 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3432 for (; view->argv[pos]; pos++) {
3433 free((void *) view->argv[pos]);
3434 view->argv[pos] = NULL;
3435 }
3437 if (view->pipe)
3438 io_done(view->pipe);
3439 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3440 return FALSE;
3441 }
3442 }
3443 return TRUE;
3444 }
3446 return pager_read(view, data);
3447 }
3449 static struct view_ops diff_ops = {
3450 "line",
3451 diff_open,
3452 diff_read,
3453 pager_draw,
3454 pager_request,
3455 pager_grep,
3456 pager_select,
3457 };
3459 /*
3460 * Help backend
3461 */
3463 static bool help_keymap_hidden[ARRAY_SIZE(keymap_map)];
3465 static bool
3466 help_open_keymap_title(struct view *view, enum keymap keymap)
3467 {
3468 struct line *line;
3470 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3471 help_keymap_hidden[keymap] ? '+' : '-',
3472 enum_name(keymap_map[keymap]));
3473 if (line)
3474 line->other = keymap;
3476 return help_keymap_hidden[keymap];
3477 }
3479 static void
3480 help_open_keymap(struct view *view, enum keymap keymap)
3481 {
3482 const char *group = NULL;
3483 char buf[SIZEOF_STR];
3484 size_t bufpos;
3485 bool add_title = TRUE;
3486 int i;
3488 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3489 const char *key = NULL;
3491 if (req_info[i].request == REQ_NONE)
3492 continue;
3494 if (!req_info[i].request) {
3495 group = req_info[i].help;
3496 continue;
3497 }
3499 key = get_keys(keymap, req_info[i].request, TRUE);
3500 if (!key || !*key)
3501 continue;
3503 if (add_title && help_open_keymap_title(view, keymap))
3504 return;
3505 add_title = FALSE;
3507 if (group) {
3508 add_line_text(view, group, LINE_HELP_GROUP);
3509 group = NULL;
3510 }
3512 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3513 enum_name(req_info[i]), req_info[i].help);
3514 }
3516 group = "External commands:";
3518 for (i = 0; i < run_requests; i++) {
3519 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3520 const char *key;
3521 int argc;
3523 if (!req || req->keymap != keymap)
3524 continue;
3526 key = get_key_name(req->key);
3527 if (!*key)
3528 key = "(no key defined)";
3530 if (add_title && help_open_keymap_title(view, keymap))
3531 return;
3532 if (group) {
3533 add_line_text(view, group, LINE_HELP_GROUP);
3534 group = NULL;
3535 }
3537 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3538 if (!string_format_from(buf, &bufpos, "%s%s",
3539 argc ? " " : "", req->argv[argc]))
3540 return;
3542 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3543 }
3544 }
3546 static bool
3547 help_open(struct view *view, enum open_flags flags)
3548 {
3549 enum keymap keymap;
3551 reset_view(view);
3552 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3553 add_line_text(view, "", LINE_DEFAULT);
3555 for (keymap = 0; keymap < ARRAY_SIZE(keymap_map); keymap++)
3556 help_open_keymap(view, keymap);
3558 return TRUE;
3559 }
3561 static enum request
3562 help_request(struct view *view, enum request request, struct line *line)
3563 {
3564 switch (request) {
3565 case REQ_ENTER:
3566 if (line->type == LINE_HELP_KEYMAP) {
3567 help_keymap_hidden[line->other] =
3568 !help_keymap_hidden[line->other];
3569 refresh_view(view);
3570 }
3572 return REQ_NONE;
3573 default:
3574 return pager_request(view, request, line);
3575 }
3576 }
3578 static struct view_ops help_ops = {
3579 "line",
3580 help_open,
3581 NULL,
3582 pager_draw,
3583 help_request,
3584 pager_grep,
3585 pager_select,
3586 };
3589 /*
3590 * Tree backend
3591 */
3593 struct tree_stack_entry {
3594 struct tree_stack_entry *prev; /* Entry below this in the stack */
3595 unsigned long lineno; /* Line number to restore */
3596 char *name; /* Position of name in opt_path */
3597 };
3599 /* The top of the path stack. */
3600 static struct tree_stack_entry *tree_stack = NULL;
3601 unsigned long tree_lineno = 0;
3603 static void
3604 pop_tree_stack_entry(void)
3605 {
3606 struct tree_stack_entry *entry = tree_stack;
3608 tree_lineno = entry->lineno;
3609 entry->name[0] = 0;
3610 tree_stack = entry->prev;
3611 free(entry);
3612 }
3614 static void
3615 push_tree_stack_entry(const char *name, unsigned long lineno)
3616 {
3617 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3618 size_t pathlen = strlen(opt_path);
3620 if (!entry)
3621 return;
3623 entry->prev = tree_stack;
3624 entry->name = opt_path + pathlen;
3625 tree_stack = entry;
3627 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3628 pop_tree_stack_entry();
3629 return;
3630 }
3632 /* Move the current line to the first tree entry. */
3633 tree_lineno = 1;
3634 entry->lineno = lineno;
3635 }
3637 /* Parse output from git-ls-tree(1):
3638 *
3639 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3640 */
3642 #define SIZEOF_TREE_ATTR \
3643 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3645 #define SIZEOF_TREE_MODE \
3646 STRING_SIZE("100644 ")
3648 #define TREE_ID_OFFSET \
3649 STRING_SIZE("100644 blob ")
3651 struct tree_entry {
3652 char id[SIZEOF_REV];
3653 mode_t mode;
3654 struct time time; /* Date from the author ident. */
3655 const char *author; /* Author of the commit. */
3656 char name[1];
3657 };
3659 static const char *
3660 tree_path(const struct line *line)
3661 {
3662 return ((struct tree_entry *) line->data)->name;
3663 }
3665 static int
3666 tree_compare_entry(const struct line *line1, const struct line *line2)
3667 {
3668 if (line1->type != line2->type)
3669 return line1->type == LINE_TREE_DIR ? -1 : 1;
3670 return strcmp(tree_path(line1), tree_path(line2));
3671 }
3673 static const enum sort_field tree_sort_fields[] = {
3674 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3675 };
3676 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3678 static int
3679 tree_compare(const void *l1, const void *l2)
3680 {
3681 const struct line *line1 = (const struct line *) l1;
3682 const struct line *line2 = (const struct line *) l2;
3683 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3684 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3686 if (line1->type == LINE_TREE_HEAD)
3687 return -1;
3688 if (line2->type == LINE_TREE_HEAD)
3689 return 1;
3691 switch (get_sort_field(tree_sort_state)) {
3692 case ORDERBY_DATE:
3693 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3695 case ORDERBY_AUTHOR:
3696 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3698 case ORDERBY_NAME:
3699 default:
3700 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3701 }
3702 }
3705 static struct line *
3706 tree_entry(struct view *view, enum line_type type, const char *path,
3707 const char *mode, const char *id)
3708 {
3709 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3710 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3712 if (!entry || !line) {
3713 free(entry);
3714 return NULL;
3715 }
3717 strncpy(entry->name, path, strlen(path));
3718 if (mode)
3719 entry->mode = strtoul(mode, NULL, 8);
3720 if (id)
3721 string_copy_rev(entry->id, id);
3723 return line;
3724 }
3726 static bool
3727 tree_read_date(struct view *view, char *text, bool *read_date)
3728 {
3729 static const char *author_name;
3730 static struct time author_time;
3732 if (!text && *read_date) {
3733 *read_date = FALSE;
3734 return TRUE;
3736 } else if (!text) {
3737 /* Find next entry to process */
3738 const char *log_file[] = {
3739 "git", "log", "--no-color", "--pretty=raw",
3740 "--cc", "--raw", view->id, "--", "%(directory)", NULL
3741 };
3743 if (!view->lines) {
3744 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3745 report("Tree is empty");
3746 return TRUE;
3747 }
3749 if (!begin_update(view, opt_cdup, log_file, OPEN_EXTRA)) {
3750 report("Failed to load tree data");
3751 return TRUE;
3752 }
3754 *read_date = TRUE;
3755 return FALSE;
3757 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3758 parse_author_line(text + STRING_SIZE("author "),
3759 &author_name, &author_time);
3761 } else if (*text == ':') {
3762 char *pos;
3763 size_t annotated = 1;
3764 size_t i;
3766 pos = strchr(text, '\t');
3767 if (!pos)
3768 return TRUE;
3769 text = pos + 1;
3770 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3771 text += strlen(opt_path);
3772 pos = strchr(text, '/');
3773 if (pos)
3774 *pos = 0;
3776 for (i = 1; i < view->lines; i++) {
3777 struct line *line = &view->line[i];
3778 struct tree_entry *entry = line->data;
3780 annotated += !!entry->author;
3781 if (entry->author || strcmp(entry->name, text))
3782 continue;
3784 entry->author = author_name;
3785 entry->time = author_time;
3786 line->dirty = 1;
3787 break;
3788 }
3790 if (annotated == view->lines)
3791 io_kill(view->pipe);
3792 }
3793 return TRUE;
3794 }
3796 static bool
3797 tree_read(struct view *view, char *text)
3798 {
3799 static bool read_date = FALSE;
3800 struct tree_entry *data;
3801 struct line *entry, *line;
3802 enum line_type type;
3803 size_t textlen = text ? strlen(text) : 0;
3804 char *path = text + SIZEOF_TREE_ATTR;
3806 if (read_date || !text)
3807 return tree_read_date(view, text, &read_date);
3809 if (textlen <= SIZEOF_TREE_ATTR)
3810 return FALSE;
3811 if (view->lines == 0 &&
3812 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3813 return FALSE;
3815 /* Strip the path part ... */
3816 if (*opt_path) {
3817 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3818 size_t striplen = strlen(opt_path);
3820 if (pathlen > striplen)
3821 memmove(path, path + striplen,
3822 pathlen - striplen + 1);
3824 /* Insert "link" to parent directory. */
3825 if (view->lines == 1 &&
3826 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3827 return FALSE;
3828 }
3830 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3831 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3832 if (!entry)
3833 return FALSE;
3834 data = entry->data;
3836 /* Skip "Directory ..." and ".." line. */
3837 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3838 if (tree_compare_entry(line, entry) <= 0)
3839 continue;
3841 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3843 line->data = data;
3844 line->type = type;
3845 for (; line <= entry; line++)
3846 line->dirty = line->cleareol = 1;
3847 return TRUE;
3848 }
3850 if (tree_lineno > view->lineno) {
3851 view->lineno = tree_lineno;
3852 tree_lineno = 0;
3853 }
3855 return TRUE;
3856 }
3858 static bool
3859 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3860 {
3861 struct tree_entry *entry = line->data;
3863 if (line->type == LINE_TREE_HEAD) {
3864 if (draw_text(view, line->type, "Directory path /"))
3865 return TRUE;
3866 } else {
3867 if (draw_mode(view, entry->mode))
3868 return TRUE;
3870 if (draw_author(view, entry->author))
3871 return TRUE;
3873 if (draw_date(view, &entry->time))
3874 return TRUE;
3875 }
3877 draw_text(view, line->type, entry->name);
3878 return TRUE;
3879 }
3881 static void
3882 open_blob_editor(const char *id)
3883 {
3884 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3885 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3886 int fd = mkstemp(file);
3888 if (fd == -1)
3889 report("Failed to create temporary file");
3890 else if (!io_run_append(blob_argv, fd))
3891 report("Failed to save blob data to file");
3892 else
3893 open_editor(file);
3894 if (fd != -1)
3895 unlink(file);
3896 }
3898 static enum request
3899 tree_request(struct view *view, enum request request, struct line *line)
3900 {
3901 enum open_flags flags;
3902 struct tree_entry *entry = line->data;
3904 switch (request) {
3905 case REQ_VIEW_BLAME:
3906 if (line->type != LINE_TREE_FILE) {
3907 report("Blame only supported for files");
3908 return REQ_NONE;
3909 }
3911 string_copy(opt_ref, view->vid);
3912 return request;
3914 case REQ_EDIT:
3915 if (line->type != LINE_TREE_FILE) {
3916 report("Edit only supported for files");
3917 } else if (!is_head_commit(view->vid)) {
3918 open_blob_editor(entry->id);
3919 } else {
3920 open_editor(opt_file);
3921 }
3922 return REQ_NONE;
3924 case REQ_TOGGLE_SORT_FIELD:
3925 case REQ_TOGGLE_SORT_ORDER:
3926 sort_view(view, request, &tree_sort_state, tree_compare);
3927 return REQ_NONE;
3929 case REQ_PARENT:
3930 if (!*opt_path) {
3931 /* quit view if at top of tree */
3932 return REQ_VIEW_CLOSE;
3933 }
3934 /* fake 'cd ..' */
3935 line = &view->line[1];
3936 break;
3938 case REQ_ENTER:
3939 break;
3941 default:
3942 return request;
3943 }
3945 /* Cleanup the stack if the tree view is at a different tree. */
3946 while (!*opt_path && tree_stack)
3947 pop_tree_stack_entry();
3949 switch (line->type) {
3950 case LINE_TREE_DIR:
3951 /* Depending on whether it is a subdirectory or parent link
3952 * mangle the path buffer. */
3953 if (line == &view->line[1] && *opt_path) {
3954 pop_tree_stack_entry();
3956 } else {
3957 const char *basename = tree_path(line);
3959 push_tree_stack_entry(basename, view->lineno);
3960 }
3962 /* Trees and subtrees share the same ID, so they are not not
3963 * unique like blobs. */
3964 flags = OPEN_RELOAD;
3965 request = REQ_VIEW_TREE;
3966 break;
3968 case LINE_TREE_FILE:
3969 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3970 request = REQ_VIEW_BLOB;
3971 break;
3973 default:
3974 return REQ_NONE;
3975 }
3977 open_view(view, request, flags);
3978 if (request == REQ_VIEW_TREE)
3979 view->lineno = tree_lineno;
3981 return REQ_NONE;
3982 }
3984 static bool
3985 tree_grep(struct view *view, struct line *line)
3986 {
3987 struct tree_entry *entry = line->data;
3988 const char *text[] = {
3989 entry->name,
3990 mkauthor(entry->author, opt_author_cols, opt_author),
3991 mkdate(&entry->time, opt_date),
3992 NULL
3993 };
3995 return grep_text(view, text);
3996 }
3998 static void
3999 tree_select(struct view *view, struct line *line)
4000 {
4001 struct tree_entry *entry = line->data;
4003 if (line->type == LINE_TREE_FILE) {
4004 string_copy_rev(ref_blob, entry->id);
4005 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4007 } else if (line->type != LINE_TREE_DIR) {
4008 return;
4009 }
4011 string_copy_rev(view->ref, entry->id);
4012 }
4014 static bool
4015 tree_open(struct view *view, enum open_flags flags)
4016 {
4017 static const char *tree_argv[] = {
4018 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4019 };
4021 if (view->lines == 0 && opt_prefix[0]) {
4022 char *pos = opt_prefix;
4024 while (pos && *pos) {
4025 char *end = strchr(pos, '/');
4027 if (end)
4028 *end = 0;
4029 push_tree_stack_entry(pos, 0);
4030 pos = end;
4031 if (end) {
4032 *end = '/';
4033 pos++;
4034 }
4035 }
4037 } else if (strcmp(view->vid, view->id)) {
4038 opt_path[0] = 0;
4039 }
4041 return begin_update(view, opt_cdup, tree_argv, flags);
4042 }
4044 static struct view_ops tree_ops = {
4045 "file",
4046 tree_open,
4047 tree_read,
4048 tree_draw,
4049 tree_request,
4050 tree_grep,
4051 tree_select,
4052 };
4054 static bool
4055 blob_open(struct view *view, enum open_flags flags)
4056 {
4057 static const char *blob_argv[] = {
4058 "git", "cat-file", "blob", "%(blob)", NULL
4059 };
4061 return begin_update(view, NULL, blob_argv, flags);
4062 }
4064 static bool
4065 blob_read(struct view *view, char *line)
4066 {
4067 if (!line)
4068 return TRUE;
4069 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4070 }
4072 static enum request
4073 blob_request(struct view *view, enum request request, struct line *line)
4074 {
4075 switch (request) {
4076 case REQ_EDIT:
4077 open_blob_editor(view->vid);
4078 return REQ_NONE;
4079 default:
4080 return pager_request(view, request, line);
4081 }
4082 }
4084 static struct view_ops blob_ops = {
4085 "line",
4086 blob_open,
4087 blob_read,
4088 pager_draw,
4089 blob_request,
4090 pager_grep,
4091 pager_select,
4092 };
4094 /*
4095 * Blame backend
4096 *
4097 * Loading the blame view is a two phase job:
4098 *
4099 * 1. File content is read either using opt_file from the
4100 * filesystem or using git-cat-file.
4101 * 2. Then blame information is incrementally added by
4102 * reading output from git-blame.
4103 */
4105 struct blame_commit {
4106 char id[SIZEOF_REV]; /* SHA1 ID. */
4107 char title[128]; /* First line of the commit message. */
4108 const char *author; /* Author of the commit. */
4109 struct time time; /* Date from the author ident. */
4110 char filename[128]; /* Name of file. */
4111 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4112 char parent_filename[128]; /* Parent/previous name of file. */
4113 };
4115 struct blame {
4116 struct blame_commit *commit;
4117 unsigned long lineno;
4118 char text[1];
4119 };
4121 static bool
4122 blame_open(struct view *view, enum open_flags flags)
4123 {
4124 const char *file_argv[] = { opt_cdup, opt_file , NULL };
4125 char path[SIZEOF_STR];
4126 size_t i;
4128 if (!view->prev && *opt_prefix) {
4129 string_copy(path, opt_file);
4130 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4131 return FALSE;
4132 }
4134 if (*opt_ref || !begin_update(view, opt_cdup, file_argv, flags)) {
4135 const char *blame_cat_file_argv[] = {
4136 "git", "cat-file", "blob", "%(ref):%(file)", NULL
4137 };
4139 if (!begin_update(view, opt_cdup, blame_cat_file_argv, flags))
4140 return FALSE;
4141 }
4143 /* First pass: remove multiple references to the same commit. */
4144 for (i = 0; i < view->lines; i++) {
4145 struct blame *blame = view->line[i].data;
4147 if (blame->commit && blame->commit->id[0])
4148 blame->commit->id[0] = 0;
4149 else
4150 blame->commit = NULL;
4151 }
4153 /* Second pass: free existing references. */
4154 for (i = 0; i < view->lines; i++) {
4155 struct blame *blame = view->line[i].data;
4157 if (blame->commit)
4158 free(blame->commit);
4159 }
4161 string_format(view->vid, "%s", opt_file);
4162 string_format(view->ref, "%s ...", opt_file);
4164 return TRUE;
4165 }
4167 static struct blame_commit *
4168 get_blame_commit(struct view *view, const char *id)
4169 {
4170 size_t i;
4172 for (i = 0; i < view->lines; i++) {
4173 struct blame *blame = view->line[i].data;
4175 if (!blame->commit)
4176 continue;
4178 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4179 return blame->commit;
4180 }
4182 {
4183 struct blame_commit *commit = calloc(1, sizeof(*commit));
4185 if (commit)
4186 string_ncopy(commit->id, id, SIZEOF_REV);
4187 return commit;
4188 }
4189 }
4191 static bool
4192 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4193 {
4194 const char *pos = *posref;
4196 *posref = NULL;
4197 pos = strchr(pos + 1, ' ');
4198 if (!pos || !isdigit(pos[1]))
4199 return FALSE;
4200 *number = atoi(pos + 1);
4201 if (*number < min || *number > max)
4202 return FALSE;
4204 *posref = pos;
4205 return TRUE;
4206 }
4208 static struct blame_commit *
4209 parse_blame_commit(struct view *view, const char *text, int *blamed)
4210 {
4211 struct blame_commit *commit;
4212 struct blame *blame;
4213 const char *pos = text + SIZEOF_REV - 2;
4214 size_t orig_lineno = 0;
4215 size_t lineno;
4216 size_t group;
4218 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4219 return NULL;
4221 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4222 !parse_number(&pos, &lineno, 1, view->lines) ||
4223 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4224 return NULL;
4226 commit = get_blame_commit(view, text);
4227 if (!commit)
4228 return NULL;
4230 *blamed += group;
4231 while (group--) {
4232 struct line *line = &view->line[lineno + group - 1];
4234 blame = line->data;
4235 blame->commit = commit;
4236 blame->lineno = orig_lineno + group - 1;
4237 line->dirty = 1;
4238 }
4240 return commit;
4241 }
4243 static bool
4244 blame_read_file(struct view *view, const char *line, bool *read_file)
4245 {
4246 if (!line) {
4247 const char *blame_argv[] = {
4248 "git", "blame", "%(blameargs)", "--incremental",
4249 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4250 };
4252 if (view->lines == 0 && !view->prev)
4253 die("No blame exist for %s", view->vid);
4255 if (view->lines == 0 || !begin_update(view, opt_cdup, blame_argv, OPEN_EXTRA)) {
4256 report("Failed to load blame data");
4257 return TRUE;
4258 }
4260 *read_file = FALSE;
4261 return FALSE;
4263 } else {
4264 size_t linelen = strlen(line);
4265 struct blame *blame = malloc(sizeof(*blame) + linelen);
4267 if (!blame)
4268 return FALSE;
4270 blame->commit = NULL;
4271 strncpy(blame->text, line, linelen);
4272 blame->text[linelen] = 0;
4273 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4274 }
4275 }
4277 static bool
4278 match_blame_header(const char *name, char **line)
4279 {
4280 size_t namelen = strlen(name);
4281 bool matched = !strncmp(name, *line, namelen);
4283 if (matched)
4284 *line += namelen;
4286 return matched;
4287 }
4289 static bool
4290 blame_read(struct view *view, char *line)
4291 {
4292 static struct blame_commit *commit = NULL;
4293 static int blamed = 0;
4294 static bool read_file = TRUE;
4296 if (read_file)
4297 return blame_read_file(view, line, &read_file);
4299 if (!line) {
4300 /* Reset all! */
4301 commit = NULL;
4302 blamed = 0;
4303 read_file = TRUE;
4304 string_format(view->ref, "%s", view->vid);
4305 if (view_is_displayed(view)) {
4306 update_view_title(view);
4307 redraw_view_from(view, 0);
4308 }
4309 return TRUE;
4310 }
4312 if (!commit) {
4313 commit = parse_blame_commit(view, line, &blamed);
4314 string_format(view->ref, "%s %2d%%", view->vid,
4315 view->lines ? blamed * 100 / view->lines : 0);
4317 } else if (match_blame_header("author ", &line)) {
4318 commit->author = get_author(line);
4320 } else if (match_blame_header("author-time ", &line)) {
4321 parse_timesec(&commit->time, line);
4323 } else if (match_blame_header("author-tz ", &line)) {
4324 parse_timezone(&commit->time, line);
4326 } else if (match_blame_header("summary ", &line)) {
4327 string_ncopy(commit->title, line, strlen(line));
4329 } else if (match_blame_header("previous ", &line)) {
4330 if (strlen(line) <= SIZEOF_REV)
4331 return FALSE;
4332 string_copy_rev(commit->parent_id, line);
4333 line += SIZEOF_REV;
4334 string_ncopy(commit->parent_filename, line, strlen(line));
4336 } else if (match_blame_header("filename ", &line)) {
4337 string_ncopy(commit->filename, line, strlen(line));
4338 commit = NULL;
4339 }
4341 return TRUE;
4342 }
4344 static bool
4345 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4346 {
4347 struct blame *blame = line->data;
4348 struct time *time = NULL;
4349 const char *id = NULL, *author = NULL;
4351 if (blame->commit && *blame->commit->filename) {
4352 id = blame->commit->id;
4353 author = blame->commit->author;
4354 time = &blame->commit->time;
4355 }
4357 if (draw_date(view, time))
4358 return TRUE;
4360 if (draw_author(view, author))
4361 return TRUE;
4363 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4364 return TRUE;
4366 if (draw_lineno(view, lineno))
4367 return TRUE;
4369 draw_text(view, LINE_DEFAULT, blame->text);
4370 return TRUE;
4371 }
4373 static bool
4374 check_blame_commit(struct blame *blame, bool check_null_id)
4375 {
4376 if (!blame->commit)
4377 report("Commit data not loaded yet");
4378 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4379 report("No commit exist for the selected line");
4380 else
4381 return TRUE;
4382 return FALSE;
4383 }
4385 static void
4386 setup_blame_parent_line(struct view *view, struct blame *blame)
4387 {
4388 char from[SIZEOF_REF + SIZEOF_STR];
4389 char to[SIZEOF_REF + SIZEOF_STR];
4390 const char *diff_tree_argv[] = {
4391 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4392 "-U0", from, to, "--", NULL
4393 };
4394 struct io io;
4395 int parent_lineno = -1;
4396 int blamed_lineno = -1;
4397 char *line;
4399 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4400 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4401 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4402 return;
4404 while ((line = io_get(&io, '\n', TRUE))) {
4405 if (*line == '@') {
4406 char *pos = strchr(line, '+');
4408 parent_lineno = atoi(line + 4);
4409 if (pos)
4410 blamed_lineno = atoi(pos + 1);
4412 } else if (*line == '+' && parent_lineno != -1) {
4413 if (blame->lineno == blamed_lineno - 1 &&
4414 !strcmp(blame->text, line + 1)) {
4415 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4416 break;
4417 }
4418 blamed_lineno++;
4419 }
4420 }
4422 io_done(&io);
4423 }
4425 static enum request
4426 blame_request(struct view *view, enum request request, struct line *line)
4427 {
4428 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4429 struct blame *blame = line->data;
4431 switch (request) {
4432 case REQ_VIEW_BLAME:
4433 if (check_blame_commit(blame, TRUE)) {
4434 string_copy(opt_ref, blame->commit->id);
4435 string_copy(opt_file, blame->commit->filename);
4436 if (blame->lineno)
4437 view->lineno = blame->lineno;
4438 reload_view(view);
4439 }
4440 break;
4442 case REQ_PARENT:
4443 if (!check_blame_commit(blame, TRUE))
4444 break;
4445 if (!*blame->commit->parent_id) {
4446 report("The selected commit has no parents");
4447 } else {
4448 string_copy_rev(opt_ref, blame->commit->parent_id);
4449 string_copy(opt_file, blame->commit->parent_filename);
4450 setup_blame_parent_line(view, blame);
4451 reload_view(view);
4452 }
4453 break;
4455 case REQ_ENTER:
4456 if (!check_blame_commit(blame, FALSE))
4457 break;
4459 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4460 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4461 break;
4463 if (!strcmp(blame->commit->id, NULL_ID)) {
4464 struct view *diff = VIEW(REQ_VIEW_DIFF);
4465 const char *diff_index_argv[] = {
4466 "git", "diff-index", "--root", "--patch-with-stat",
4467 "-C", "-M", "HEAD", "--", view->vid, NULL
4468 };
4470 if (!*blame->commit->parent_id) {
4471 diff_index_argv[1] = "diff";
4472 diff_index_argv[2] = "--no-color";
4473 diff_index_argv[6] = "--";
4474 diff_index_argv[7] = "/dev/null";
4475 }
4477 open_argv(view, diff, diff_index_argv, NULL, flags);
4478 } else {
4479 open_view(view, REQ_VIEW_DIFF, flags);
4480 }
4481 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4482 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4483 break;
4485 default:
4486 return request;
4487 }
4489 return REQ_NONE;
4490 }
4492 static bool
4493 blame_grep(struct view *view, struct line *line)
4494 {
4495 struct blame *blame = line->data;
4496 struct blame_commit *commit = blame->commit;
4497 const char *text[] = {
4498 blame->text,
4499 commit ? commit->title : "",
4500 commit ? commit->id : "",
4501 commit && opt_author ? commit->author : "",
4502 commit ? mkdate(&commit->time, opt_date) : "",
4503 NULL
4504 };
4506 return grep_text(view, text);
4507 }
4509 static void
4510 blame_select(struct view *view, struct line *line)
4511 {
4512 struct blame *blame = line->data;
4513 struct blame_commit *commit = blame->commit;
4515 if (!commit)
4516 return;
4518 if (!strcmp(commit->id, NULL_ID))
4519 string_ncopy(ref_commit, "HEAD", 4);
4520 else
4521 string_copy_rev(ref_commit, commit->id);
4522 }
4524 static struct view_ops blame_ops = {
4525 "line",
4526 blame_open,
4527 blame_read,
4528 blame_draw,
4529 blame_request,
4530 blame_grep,
4531 blame_select,
4532 };
4534 /*
4535 * Branch backend
4536 */
4538 struct branch {
4539 const char *author; /* Author of the last commit. */
4540 struct time time; /* Date of the last activity. */
4541 const struct ref *ref; /* Name and commit ID information. */
4542 };
4544 static const struct ref branch_all;
4546 static const enum sort_field branch_sort_fields[] = {
4547 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4548 };
4549 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4551 static int
4552 branch_compare(const void *l1, const void *l2)
4553 {
4554 const struct branch *branch1 = ((const struct line *) l1)->data;
4555 const struct branch *branch2 = ((const struct line *) l2)->data;
4557 switch (get_sort_field(branch_sort_state)) {
4558 case ORDERBY_DATE:
4559 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4561 case ORDERBY_AUTHOR:
4562 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4564 case ORDERBY_NAME:
4565 default:
4566 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4567 }
4568 }
4570 static bool
4571 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4572 {
4573 struct branch *branch = line->data;
4574 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4576 if (draw_date(view, &branch->time))
4577 return TRUE;
4579 if (draw_author(view, branch->author))
4580 return TRUE;
4582 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4583 return TRUE;
4584 }
4586 static enum request
4587 branch_request(struct view *view, enum request request, struct line *line)
4588 {
4589 struct branch *branch = line->data;
4591 switch (request) {
4592 case REQ_REFRESH:
4593 load_refs();
4594 refresh_view(view);
4595 return REQ_NONE;
4597 case REQ_TOGGLE_SORT_FIELD:
4598 case REQ_TOGGLE_SORT_ORDER:
4599 sort_view(view, request, &branch_sort_state, branch_compare);
4600 return REQ_NONE;
4602 case REQ_ENTER:
4603 {
4604 const struct ref *ref = branch->ref;
4605 const char *all_branches_argv[] = {
4606 "git", "log", "--no-color", "--pretty=raw", "--parents",
4607 "--topo-order",
4608 ref == &branch_all ? "--all" : ref->name, NULL
4609 };
4610 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4612 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
4613 return REQ_NONE;
4614 }
4615 default:
4616 return request;
4617 }
4618 }
4620 static bool
4621 branch_read(struct view *view, char *line)
4622 {
4623 static char id[SIZEOF_REV];
4624 struct branch *reference;
4625 size_t i;
4627 if (!line)
4628 return TRUE;
4630 switch (get_line_type(line)) {
4631 case LINE_COMMIT:
4632 string_copy_rev(id, line + STRING_SIZE("commit "));
4633 return TRUE;
4635 case LINE_AUTHOR:
4636 for (i = 0, reference = NULL; i < view->lines; i++) {
4637 struct branch *branch = view->line[i].data;
4639 if (strcmp(branch->ref->id, id))
4640 continue;
4642 view->line[i].dirty = TRUE;
4643 if (reference) {
4644 branch->author = reference->author;
4645 branch->time = reference->time;
4646 continue;
4647 }
4649 parse_author_line(line + STRING_SIZE("author "),
4650 &branch->author, &branch->time);
4651 reference = branch;
4652 }
4653 return TRUE;
4655 default:
4656 return TRUE;
4657 }
4659 }
4661 static bool
4662 branch_open_visitor(void *data, const struct ref *ref)
4663 {
4664 struct view *view = data;
4665 struct branch *branch;
4667 if (ref->tag || ref->ltag || ref->remote)
4668 return TRUE;
4670 branch = calloc(1, sizeof(*branch));
4671 if (!branch)
4672 return FALSE;
4674 branch->ref = ref;
4675 return !!add_line_data(view, branch, LINE_DEFAULT);
4676 }
4678 static bool
4679 branch_open(struct view *view, enum open_flags flags)
4680 {
4681 const char *branch_log[] = {
4682 "git", "log", "--no-color", "--pretty=raw",
4683 "--simplify-by-decoration", "--all", NULL
4684 };
4686 if (!begin_update(view, NULL, branch_log, flags)) {
4687 report("Failed to load branch data");
4688 return TRUE;
4689 }
4691 branch_open_visitor(view, &branch_all);
4692 foreach_ref(branch_open_visitor, view);
4693 view->p_restore = TRUE;
4695 return TRUE;
4696 }
4698 static bool
4699 branch_grep(struct view *view, struct line *line)
4700 {
4701 struct branch *branch = line->data;
4702 const char *text[] = {
4703 branch->ref->name,
4704 mkauthor(branch->author, opt_author_cols, opt_author),
4705 NULL
4706 };
4708 return grep_text(view, text);
4709 }
4711 static void
4712 branch_select(struct view *view, struct line *line)
4713 {
4714 struct branch *branch = line->data;
4716 string_copy_rev(view->ref, branch->ref->id);
4717 string_copy_rev(ref_commit, branch->ref->id);
4718 string_copy_rev(ref_head, branch->ref->id);
4719 string_copy_rev(ref_branch, branch->ref->name);
4720 }
4722 static struct view_ops branch_ops = {
4723 "branch",
4724 branch_open,
4725 branch_read,
4726 branch_draw,
4727 branch_request,
4728 branch_grep,
4729 branch_select,
4730 };
4732 /*
4733 * Status backend
4734 */
4736 struct status {
4737 char status;
4738 struct {
4739 mode_t mode;
4740 char rev[SIZEOF_REV];
4741 char name[SIZEOF_STR];
4742 } old;
4743 struct {
4744 mode_t mode;
4745 char rev[SIZEOF_REV];
4746 char name[SIZEOF_STR];
4747 } new;
4748 };
4750 static char status_onbranch[SIZEOF_STR];
4751 static struct status stage_status;
4752 static enum line_type stage_line_type;
4753 static size_t stage_chunks;
4754 static int *stage_chunk;
4756 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4758 /* This should work even for the "On branch" line. */
4759 static inline bool
4760 status_has_none(struct view *view, struct line *line)
4761 {
4762 return line < view->line + view->lines && !line[1].data;
4763 }
4765 /* Get fields from the diff line:
4766 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4767 */
4768 static inline bool
4769 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4770 {
4771 const char *old_mode = buf + 1;
4772 const char *new_mode = buf + 8;
4773 const char *old_rev = buf + 15;
4774 const char *new_rev = buf + 56;
4775 const char *status = buf + 97;
4777 if (bufsize < 98 ||
4778 old_mode[-1] != ':' ||
4779 new_mode[-1] != ' ' ||
4780 old_rev[-1] != ' ' ||
4781 new_rev[-1] != ' ' ||
4782 status[-1] != ' ')
4783 return FALSE;
4785 file->status = *status;
4787 string_copy_rev(file->old.rev, old_rev);
4788 string_copy_rev(file->new.rev, new_rev);
4790 file->old.mode = strtoul(old_mode, NULL, 8);
4791 file->new.mode = strtoul(new_mode, NULL, 8);
4793 file->old.name[0] = file->new.name[0] = 0;
4795 return TRUE;
4796 }
4798 static bool
4799 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4800 {
4801 struct status *unmerged = NULL;
4802 char *buf;
4803 struct io io;
4805 if (!io_run(&io, IO_RD, opt_cdup, argv))
4806 return FALSE;
4808 add_line_data(view, NULL, type);
4810 while ((buf = io_get(&io, 0, TRUE))) {
4811 struct status *file = unmerged;
4813 if (!file) {
4814 file = calloc(1, sizeof(*file));
4815 if (!file || !add_line_data(view, file, type))
4816 goto error_out;
4817 }
4819 /* Parse diff info part. */
4820 if (status) {
4821 file->status = status;
4822 if (status == 'A')
4823 string_copy(file->old.rev, NULL_ID);
4825 } else if (!file->status || file == unmerged) {
4826 if (!status_get_diff(file, buf, strlen(buf)))
4827 goto error_out;
4829 buf = io_get(&io, 0, TRUE);
4830 if (!buf)
4831 break;
4833 /* Collapse all modified entries that follow an
4834 * associated unmerged entry. */
4835 if (unmerged == file) {
4836 unmerged->status = 'U';
4837 unmerged = NULL;
4838 } else if (file->status == 'U') {
4839 unmerged = file;
4840 }
4841 }
4843 /* Grab the old name for rename/copy. */
4844 if (!*file->old.name &&
4845 (file->status == 'R' || file->status == 'C')) {
4846 string_ncopy(file->old.name, buf, strlen(buf));
4848 buf = io_get(&io, 0, TRUE);
4849 if (!buf)
4850 break;
4851 }
4853 /* git-ls-files just delivers a NUL separated list of
4854 * file names similar to the second half of the
4855 * git-diff-* output. */
4856 string_ncopy(file->new.name, buf, strlen(buf));
4857 if (!*file->old.name)
4858 string_copy(file->old.name, file->new.name);
4859 file = NULL;
4860 }
4862 if (io_error(&io)) {
4863 error_out:
4864 io_done(&io);
4865 return FALSE;
4866 }
4868 if (!view->line[view->lines - 1].data)
4869 add_line_data(view, NULL, LINE_STAT_NONE);
4871 io_done(&io);
4872 return TRUE;
4873 }
4875 /* Don't show unmerged entries in the staged section. */
4876 static const char *status_diff_index_argv[] = {
4877 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4878 "--cached", "-M", "HEAD", NULL
4879 };
4881 static const char *status_diff_files_argv[] = {
4882 "git", "diff-files", "-z", NULL
4883 };
4885 static const char *status_list_other_argv[] = {
4886 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4887 };
4889 static const char *status_list_no_head_argv[] = {
4890 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4891 };
4893 static const char *update_index_argv[] = {
4894 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4895 };
4897 /* Restore the previous line number to stay in the context or select a
4898 * line with something that can be updated. */
4899 static void
4900 status_restore(struct view *view)
4901 {
4902 if (view->p_lineno >= view->lines)
4903 view->p_lineno = view->lines - 1;
4904 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4905 view->p_lineno++;
4906 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4907 view->p_lineno--;
4909 /* If the above fails, always skip the "On branch" line. */
4910 if (view->p_lineno < view->lines)
4911 view->lineno = view->p_lineno;
4912 else
4913 view->lineno = 1;
4915 if (view->lineno < view->offset)
4916 view->offset = view->lineno;
4917 else if (view->offset + view->height <= view->lineno)
4918 view->offset = view->lineno - view->height + 1;
4920 view->p_restore = FALSE;
4921 }
4923 static void
4924 status_update_onbranch(void)
4925 {
4926 static const char *paths[][2] = {
4927 { "rebase-apply/rebasing", "Rebasing" },
4928 { "rebase-apply/applying", "Applying mailbox" },
4929 { "rebase-apply/", "Rebasing mailbox" },
4930 { "rebase-merge/interactive", "Interactive rebase" },
4931 { "rebase-merge/", "Rebase merge" },
4932 { "MERGE_HEAD", "Merging" },
4933 { "BISECT_LOG", "Bisecting" },
4934 { "HEAD", "On branch" },
4935 };
4936 char buf[SIZEOF_STR];
4937 struct stat stat;
4938 int i;
4940 if (is_initial_commit()) {
4941 string_copy(status_onbranch, "Initial commit");
4942 return;
4943 }
4945 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4946 char *head = opt_head;
4948 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4949 lstat(buf, &stat) < 0)
4950 continue;
4952 if (!*opt_head) {
4953 struct io io;
4955 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4956 io_read_buf(&io, buf, sizeof(buf))) {
4957 head = buf;
4958 if (!prefixcmp(head, "refs/heads/"))
4959 head += STRING_SIZE("refs/heads/");
4960 }
4961 }
4963 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4964 string_copy(status_onbranch, opt_head);
4965 return;
4966 }
4968 string_copy(status_onbranch, "Not currently on any branch");
4969 }
4971 /* First parse staged info using git-diff-index(1), then parse unstaged
4972 * info using git-diff-files(1), and finally untracked files using
4973 * git-ls-files(1). */
4974 static bool
4975 status_open(struct view *view, enum open_flags flags)
4976 {
4977 reset_view(view);
4979 add_line_data(view, NULL, LINE_STAT_HEAD);
4980 status_update_onbranch();
4982 io_run_bg(update_index_argv);
4984 if (is_initial_commit()) {
4985 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4986 return FALSE;
4987 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4988 return FALSE;
4989 }
4991 if (!opt_untracked_dirs_content)
4992 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
4994 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4995 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4996 return FALSE;
4998 /* Restore the exact position or use the specialized restore
4999 * mode? */
5000 if (!view->p_restore)
5001 status_restore(view);
5002 return TRUE;
5003 }
5005 static bool
5006 status_draw(struct view *view, struct line *line, unsigned int lineno)
5007 {
5008 struct status *status = line->data;
5009 enum line_type type;
5010 const char *text;
5012 if (!status) {
5013 switch (line->type) {
5014 case LINE_STAT_STAGED:
5015 type = LINE_STAT_SECTION;
5016 text = "Changes to be committed:";
5017 break;
5019 case LINE_STAT_UNSTAGED:
5020 type = LINE_STAT_SECTION;
5021 text = "Changed but not updated:";
5022 break;
5024 case LINE_STAT_UNTRACKED:
5025 type = LINE_STAT_SECTION;
5026 text = "Untracked files:";
5027 break;
5029 case LINE_STAT_NONE:
5030 type = LINE_DEFAULT;
5031 text = " (no files)";
5032 break;
5034 case LINE_STAT_HEAD:
5035 type = LINE_STAT_HEAD;
5036 text = status_onbranch;
5037 break;
5039 default:
5040 return FALSE;
5041 }
5042 } else {
5043 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5045 buf[0] = status->status;
5046 if (draw_text(view, line->type, buf))
5047 return TRUE;
5048 type = LINE_DEFAULT;
5049 text = status->new.name;
5050 }
5052 draw_text(view, type, text);
5053 return TRUE;
5054 }
5056 static enum request
5057 status_enter(struct view *view, struct line *line)
5058 {
5059 struct status *status = line->data;
5060 const char *oldpath = status ? status->old.name : NULL;
5061 /* Diffs for unmerged entries are empty when passing the new
5062 * path, so leave it empty. */
5063 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5064 const char *info;
5065 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5066 struct view *stage = VIEW(REQ_VIEW_STAGE);
5068 if (line->type == LINE_STAT_NONE ||
5069 (!status && line[1].type == LINE_STAT_NONE)) {
5070 report("No file to diff");
5071 return REQ_NONE;
5072 }
5074 switch (line->type) {
5075 case LINE_STAT_STAGED:
5076 if (is_initial_commit()) {
5077 const char *no_head_diff_argv[] = {
5078 "git", "diff", "--no-color", "--patch-with-stat",
5079 "--", "/dev/null", newpath, NULL
5080 };
5082 open_argv(view, stage, no_head_diff_argv, opt_cdup, flags);
5083 } else {
5084 const char *index_show_argv[] = {
5085 "git", "diff-index", "--root", "--patch-with-stat",
5086 "-C", "-M", "--cached", "HEAD", "--",
5087 oldpath, newpath, NULL
5088 };
5090 open_argv(view, stage, index_show_argv, opt_cdup, flags);
5091 }
5093 if (status)
5094 info = "Staged changes to %s";
5095 else
5096 info = "Staged changes";
5097 break;
5099 case LINE_STAT_UNSTAGED:
5100 {
5101 const char *files_show_argv[] = {
5102 "git", "diff-files", "--root", "--patch-with-stat",
5103 "-C", "-M", "--", oldpath, newpath, NULL
5104 };
5106 open_argv(view, stage, files_show_argv, opt_cdup, flags);
5107 if (status)
5108 info = "Unstaged changes to %s";
5109 else
5110 info = "Unstaged changes";
5111 break;
5112 }
5113 case LINE_STAT_UNTRACKED:
5114 if (!newpath) {
5115 report("No file to show");
5116 return REQ_NONE;
5117 }
5119 if (!suffixcmp(status->new.name, -1, "/")) {
5120 report("Cannot display a directory");
5121 return REQ_NONE;
5122 }
5124 open_file(view, stage, newpath, flags);
5125 info = "Untracked file %s";
5126 break;
5128 case LINE_STAT_HEAD:
5129 return REQ_NONE;
5131 default:
5132 die("line type %d not handled in switch", line->type);
5133 }
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 refresh_view(view);
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 refresh_view(view->parent);
5686 /* Check whether the staged entry still exists, and close the
5687 * stage view if it doesn't. */
5688 if (!status_exists(&stage_status, stage_line_type)) {
5689 status_restore(VIEW(REQ_VIEW_STATUS));
5690 return REQ_VIEW_CLOSE;
5691 }
5693 refresh_view(view);
5695 return REQ_NONE;
5696 }
5698 static struct view_ops stage_ops = {
5699 "line",
5700 view_open,
5701 pager_read,
5702 pager_draw,
5703 stage_request,
5704 pager_grep,
5705 pager_select,
5706 };
5709 /*
5710 * Revision graph
5711 */
5713 static const enum line_type graph_colors[] = {
5714 LINE_GRAPH_LINE_0,
5715 LINE_GRAPH_LINE_1,
5716 LINE_GRAPH_LINE_2,
5717 LINE_GRAPH_LINE_3,
5718 LINE_GRAPH_LINE_4,
5719 LINE_GRAPH_LINE_5,
5720 LINE_GRAPH_LINE_6,
5721 };
5723 static enum line_type get_graph_color(struct graph_symbol *symbol)
5724 {
5725 if (symbol->commit)
5726 return LINE_GRAPH_COMMIT;
5727 assert(symbol->color < ARRAY_SIZE(graph_colors));
5728 return graph_colors[symbol->color];
5729 }
5731 static bool
5732 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5733 {
5734 const char *chars = graph_symbol_to_utf8(symbol);
5736 return draw_text(view, color, chars + !!first);
5737 }
5739 static bool
5740 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5741 {
5742 const char *chars = graph_symbol_to_ascii(symbol);
5744 return draw_text(view, color, chars + !!first);
5745 }
5747 static bool
5748 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5749 {
5750 const chtype *chars = graph_symbol_to_chtype(symbol);
5752 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5753 }
5755 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5757 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5758 {
5759 static const draw_graph_fn fns[] = {
5760 draw_graph_ascii,
5761 draw_graph_chtype,
5762 draw_graph_utf8
5763 };
5764 draw_graph_fn fn = fns[opt_line_graphics];
5765 int i;
5767 for (i = 0; i < canvas->size; i++) {
5768 struct graph_symbol *symbol = &canvas->symbols[i];
5769 enum line_type color = get_graph_color(symbol);
5771 if (fn(view, symbol, color, i == 0))
5772 return TRUE;
5773 }
5775 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5776 }
5778 /*
5779 * Main view backend
5780 */
5782 struct commit {
5783 char id[SIZEOF_REV]; /* SHA1 ID. */
5784 char title[128]; /* First line of the commit message. */
5785 const char *author; /* Author of the commit. */
5786 struct time time; /* Date from the author ident. */
5787 struct ref_list *refs; /* Repository references. */
5788 struct graph_canvas graph; /* Ancestry chain graphics. */
5789 };
5791 static bool
5792 main_open(struct view *view, enum open_flags flags)
5793 {
5794 static const char *main_argv[] = {
5795 "git", "log", "--no-color", "--pretty=raw", "--parents",
5796 "--topo-order", "%(diffargs)", "%(revargs)",
5797 "--", "%(fileargs)", NULL
5798 };
5800 return begin_update(view, NULL, main_argv, flags);
5801 }
5803 static bool
5804 main_draw(struct view *view, struct line *line, unsigned int lineno)
5805 {
5806 struct commit *commit = line->data;
5808 if (!commit->author)
5809 return FALSE;
5811 if (draw_date(view, &commit->time))
5812 return TRUE;
5814 if (draw_author(view, commit->author))
5815 return TRUE;
5817 if (opt_rev_graph && draw_graph(view, &commit->graph))
5818 return TRUE;
5820 if (draw_refs(view, commit->refs))
5821 return TRUE;
5823 draw_text(view, LINE_DEFAULT, commit->title);
5824 return TRUE;
5825 }
5827 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5828 static bool
5829 main_read(struct view *view, char *line)
5830 {
5831 static struct graph graph;
5832 enum line_type type;
5833 struct commit *commit;
5835 if (!line) {
5836 if (!view->lines && !view->prev)
5837 die("No revisions match the given arguments.");
5838 if (view->lines > 0) {
5839 commit = view->line[view->lines - 1].data;
5840 view->line[view->lines - 1].dirty = 1;
5841 if (!commit->author) {
5842 view->lines--;
5843 free(commit);
5844 }
5845 }
5847 done_graph(&graph);
5848 return TRUE;
5849 }
5851 type = get_line_type(line);
5852 if (type == LINE_COMMIT) {
5853 bool is_boundary;
5855 commit = calloc(1, sizeof(struct commit));
5856 if (!commit)
5857 return FALSE;
5859 line += STRING_SIZE("commit ");
5860 is_boundary = *line == '-';
5861 if (is_boundary)
5862 line++;
5864 string_copy_rev(commit->id, line);
5865 commit->refs = get_ref_list(commit->id);
5866 add_line_data(view, commit, LINE_MAIN_COMMIT);
5867 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5868 return TRUE;
5869 }
5871 if (!view->lines)
5872 return TRUE;
5873 commit = view->line[view->lines - 1].data;
5875 switch (type) {
5876 case LINE_PARENT:
5877 if (!graph.has_parents)
5878 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5879 break;
5881 case LINE_AUTHOR:
5882 parse_author_line(line + STRING_SIZE("author "),
5883 &commit->author, &commit->time);
5884 graph_render_parents(&graph);
5885 break;
5887 default:
5888 /* Fill in the commit title if it has not already been set. */
5889 if (commit->title[0])
5890 break;
5892 /* Require titles to start with a non-space character at the
5893 * offset used by git log. */
5894 if (strncmp(line, " ", 4))
5895 break;
5896 line += 4;
5897 /* Well, if the title starts with a whitespace character,
5898 * try to be forgiving. Otherwise we end up with no title. */
5899 while (isspace(*line))
5900 line++;
5901 if (*line == '\0')
5902 break;
5903 /* FIXME: More graceful handling of titles; append "..." to
5904 * shortened titles, etc. */
5906 string_expand(commit->title, sizeof(commit->title), line, 1);
5907 view->line[view->lines - 1].dirty = 1;
5908 }
5910 return TRUE;
5911 }
5913 static enum request
5914 main_request(struct view *view, enum request request, struct line *line)
5915 {
5916 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5918 switch (request) {
5919 case REQ_ENTER:
5920 if (view_is_displayed(view) && display[0] != view)
5921 maximize_view(view, TRUE);
5922 open_view(view, REQ_VIEW_DIFF, flags);
5923 break;
5924 case REQ_REFRESH:
5925 load_refs();
5926 refresh_view(view);
5927 break;
5928 default:
5929 return request;
5930 }
5932 return REQ_NONE;
5933 }
5935 static bool
5936 grep_refs(struct ref_list *list, regex_t *regex)
5937 {
5938 regmatch_t pmatch;
5939 size_t i;
5941 if (!opt_show_refs || !list)
5942 return FALSE;
5944 for (i = 0; i < list->size; i++) {
5945 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5946 return TRUE;
5947 }
5949 return FALSE;
5950 }
5952 static bool
5953 main_grep(struct view *view, struct line *line)
5954 {
5955 struct commit *commit = line->data;
5956 const char *text[] = {
5957 commit->title,
5958 mkauthor(commit->author, opt_author_cols, opt_author),
5959 mkdate(&commit->time, opt_date),
5960 NULL
5961 };
5963 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5964 }
5966 static void
5967 main_select(struct view *view, struct line *line)
5968 {
5969 struct commit *commit = line->data;
5971 string_copy_rev(view->ref, commit->id);
5972 string_copy_rev(ref_commit, view->ref);
5973 }
5975 static struct view_ops main_ops = {
5976 "commit",
5977 main_open,
5978 main_read,
5979 main_draw,
5980 main_request,
5981 main_grep,
5982 main_select,
5983 };
5986 /*
5987 * Status management
5988 */
5990 /* Whether or not the curses interface has been initialized. */
5991 static bool cursed = FALSE;
5993 /* Terminal hacks and workarounds. */
5994 static bool use_scroll_redrawwin;
5995 static bool use_scroll_status_wclear;
5997 /* The status window is used for polling keystrokes. */
5998 static WINDOW *status_win;
6000 /* Reading from the prompt? */
6001 static bool input_mode = FALSE;
6003 static bool status_empty = FALSE;
6005 /* Update status and title window. */
6006 static void
6007 report(const char *msg, ...)
6008 {
6009 struct view *view = display[current_view];
6011 if (input_mode)
6012 return;
6014 if (!view) {
6015 char buf[SIZEOF_STR];
6016 va_list args;
6018 va_start(args, msg);
6019 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6020 buf[sizeof(buf) - 1] = 0;
6021 buf[sizeof(buf) - 2] = '.';
6022 buf[sizeof(buf) - 3] = '.';
6023 buf[sizeof(buf) - 4] = '.';
6024 }
6025 va_end(args);
6026 die("%s", buf);
6027 }
6029 if (!status_empty || *msg) {
6030 va_list args;
6032 va_start(args, msg);
6034 wmove(status_win, 0, 0);
6035 if (view->has_scrolled && use_scroll_status_wclear)
6036 wclear(status_win);
6037 if (*msg) {
6038 vwprintw(status_win, msg, args);
6039 status_empty = FALSE;
6040 } else {
6041 status_empty = TRUE;
6042 }
6043 wclrtoeol(status_win);
6044 wnoutrefresh(status_win);
6046 va_end(args);
6047 }
6049 update_view_title(view);
6050 }
6052 static void
6053 init_display(void)
6054 {
6055 const char *term;
6056 int x, y;
6058 /* Initialize the curses library */
6059 if (isatty(STDIN_FILENO)) {
6060 cursed = !!initscr();
6061 opt_tty = stdin;
6062 } else {
6063 /* Leave stdin and stdout alone when acting as a pager. */
6064 opt_tty = fopen("/dev/tty", "r+");
6065 if (!opt_tty)
6066 die("Failed to open /dev/tty");
6067 cursed = !!newterm(NULL, opt_tty, opt_tty);
6068 }
6070 if (!cursed)
6071 die("Failed to initialize curses");
6073 nonl(); /* Disable conversion and detect newlines from input. */
6074 cbreak(); /* Take input chars one at a time, no wait for \n */
6075 noecho(); /* Don't echo input */
6076 leaveok(stdscr, FALSE);
6078 if (has_colors())
6079 init_colors();
6081 getmaxyx(stdscr, y, x);
6082 status_win = newwin(1, x, y - 1, 0);
6083 if (!status_win)
6084 die("Failed to create status window");
6086 /* Enable keyboard mapping */
6087 keypad(status_win, TRUE);
6088 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6090 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6091 set_tabsize(opt_tab_size);
6092 #else
6093 TABSIZE = opt_tab_size;
6094 #endif
6096 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6097 if (term && !strcmp(term, "gnome-terminal")) {
6098 /* In the gnome-terminal-emulator, the message from
6099 * scrolling up one line when impossible followed by
6100 * scrolling down one line causes corruption of the
6101 * status line. This is fixed by calling wclear. */
6102 use_scroll_status_wclear = TRUE;
6103 use_scroll_redrawwin = FALSE;
6105 } else if (term && !strcmp(term, "xrvt-xpm")) {
6106 /* No problems with full optimizations in xrvt-(unicode)
6107 * and aterm. */
6108 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6110 } else {
6111 /* When scrolling in (u)xterm the last line in the
6112 * scrolling direction will update slowly. */
6113 use_scroll_redrawwin = TRUE;
6114 use_scroll_status_wclear = FALSE;
6115 }
6116 }
6118 static int
6119 get_input(int prompt_position)
6120 {
6121 struct view *view;
6122 int i, key, cursor_y, cursor_x;
6124 if (prompt_position)
6125 input_mode = TRUE;
6127 while (TRUE) {
6128 bool loading = FALSE;
6130 foreach_view (view, i) {
6131 update_view(view);
6132 if (view_is_displayed(view) && view->has_scrolled &&
6133 use_scroll_redrawwin)
6134 redrawwin(view->win);
6135 view->has_scrolled = FALSE;
6136 if (view->pipe)
6137 loading = TRUE;
6138 }
6140 /* Update the cursor position. */
6141 if (prompt_position) {
6142 getbegyx(status_win, cursor_y, cursor_x);
6143 cursor_x = prompt_position;
6144 } else {
6145 view = display[current_view];
6146 getbegyx(view->win, cursor_y, cursor_x);
6147 cursor_x = view->width - 1;
6148 cursor_y += view->lineno - view->offset;
6149 }
6150 setsyx(cursor_y, cursor_x);
6152 /* Refresh, accept single keystroke of input */
6153 doupdate();
6154 nodelay(status_win, loading);
6155 key = wgetch(status_win);
6157 /* wgetch() with nodelay() enabled returns ERR when
6158 * there's no input. */
6159 if (key == ERR) {
6161 } else if (key == KEY_RESIZE) {
6162 int height, width;
6164 getmaxyx(stdscr, height, width);
6166 wresize(status_win, 1, width);
6167 mvwin(status_win, height - 1, 0);
6168 wnoutrefresh(status_win);
6169 resize_display();
6170 redraw_display(TRUE);
6172 } else {
6173 input_mode = FALSE;
6174 return key;
6175 }
6176 }
6177 }
6179 static char *
6180 prompt_input(const char *prompt, input_handler handler, void *data)
6181 {
6182 enum input_status status = INPUT_OK;
6183 static char buf[SIZEOF_STR];
6184 size_t pos = 0;
6186 buf[pos] = 0;
6188 while (status == INPUT_OK || status == INPUT_SKIP) {
6189 int key;
6191 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6192 wclrtoeol(status_win);
6194 key = get_input(pos + 1);
6195 switch (key) {
6196 case KEY_RETURN:
6197 case KEY_ENTER:
6198 case '\n':
6199 status = pos ? INPUT_STOP : INPUT_CANCEL;
6200 break;
6202 case KEY_BACKSPACE:
6203 if (pos > 0)
6204 buf[--pos] = 0;
6205 else
6206 status = INPUT_CANCEL;
6207 break;
6209 case KEY_ESC:
6210 status = INPUT_CANCEL;
6211 break;
6213 default:
6214 if (pos >= sizeof(buf)) {
6215 report("Input string too long");
6216 return NULL;
6217 }
6219 status = handler(data, buf, key);
6220 if (status == INPUT_OK)
6221 buf[pos++] = (char) key;
6222 }
6223 }
6225 /* Clear the status window */
6226 status_empty = FALSE;
6227 report("");
6229 if (status == INPUT_CANCEL)
6230 return NULL;
6232 buf[pos++] = 0;
6234 return buf;
6235 }
6237 static enum input_status
6238 prompt_yesno_handler(void *data, char *buf, int c)
6239 {
6240 if (c == 'y' || c == 'Y')
6241 return INPUT_STOP;
6242 if (c == 'n' || c == 'N')
6243 return INPUT_CANCEL;
6244 return INPUT_SKIP;
6245 }
6247 static bool
6248 prompt_yesno(const char *prompt)
6249 {
6250 char prompt2[SIZEOF_STR];
6252 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6253 return FALSE;
6255 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6256 }
6258 static enum input_status
6259 read_prompt_handler(void *data, char *buf, int c)
6260 {
6261 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6262 }
6264 static char *
6265 read_prompt(const char *prompt)
6266 {
6267 return prompt_input(prompt, read_prompt_handler, NULL);
6268 }
6270 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6271 {
6272 enum input_status status = INPUT_OK;
6273 int size = 0;
6275 while (items[size].text)
6276 size++;
6278 while (status == INPUT_OK) {
6279 const struct menu_item *item = &items[*selected];
6280 int key;
6281 int i;
6283 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6284 prompt, *selected + 1, size);
6285 if (item->hotkey)
6286 wprintw(status_win, "[%c] ", (char) item->hotkey);
6287 wprintw(status_win, "%s", item->text);
6288 wclrtoeol(status_win);
6290 key = get_input(COLS - 1);
6291 switch (key) {
6292 case KEY_RETURN:
6293 case KEY_ENTER:
6294 case '\n':
6295 status = INPUT_STOP;
6296 break;
6298 case KEY_LEFT:
6299 case KEY_UP:
6300 *selected = *selected - 1;
6301 if (*selected < 0)
6302 *selected = size - 1;
6303 break;
6305 case KEY_RIGHT:
6306 case KEY_DOWN:
6307 *selected = (*selected + 1) % size;
6308 break;
6310 case KEY_ESC:
6311 status = INPUT_CANCEL;
6312 break;
6314 default:
6315 for (i = 0; items[i].text; i++)
6316 if (items[i].hotkey == key) {
6317 *selected = i;
6318 status = INPUT_STOP;
6319 break;
6320 }
6321 }
6322 }
6324 /* Clear the status window */
6325 status_empty = FALSE;
6326 report("");
6328 return status != INPUT_CANCEL;
6329 }
6331 /*
6332 * Repository properties
6333 */
6335 static struct ref **refs = NULL;
6336 static size_t refs_size = 0;
6337 static struct ref *refs_head = NULL;
6339 static struct ref_list **ref_lists = NULL;
6340 static size_t ref_lists_size = 0;
6342 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6343 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6344 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6346 static int
6347 compare_refs(const void *ref1_, const void *ref2_)
6348 {
6349 const struct ref *ref1 = *(const struct ref **)ref1_;
6350 const struct ref *ref2 = *(const struct ref **)ref2_;
6352 if (ref1->tag != ref2->tag)
6353 return ref2->tag - ref1->tag;
6354 if (ref1->ltag != ref2->ltag)
6355 return ref2->ltag - ref2->ltag;
6356 if (ref1->head != ref2->head)
6357 return ref2->head - ref1->head;
6358 if (ref1->tracked != ref2->tracked)
6359 return ref2->tracked - ref1->tracked;
6360 if (ref1->remote != ref2->remote)
6361 return ref2->remote - ref1->remote;
6362 return strcmp(ref1->name, ref2->name);
6363 }
6365 static void
6366 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6367 {
6368 size_t i;
6370 for (i = 0; i < refs_size; i++)
6371 if (!visitor(data, refs[i]))
6372 break;
6373 }
6375 static struct ref *
6376 get_ref_head()
6377 {
6378 return refs_head;
6379 }
6381 static struct ref_list *
6382 get_ref_list(const char *id)
6383 {
6384 struct ref_list *list;
6385 size_t i;
6387 for (i = 0; i < ref_lists_size; i++)
6388 if (!strcmp(id, ref_lists[i]->id))
6389 return ref_lists[i];
6391 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6392 return NULL;
6393 list = calloc(1, sizeof(*list));
6394 if (!list)
6395 return NULL;
6397 for (i = 0; i < refs_size; i++) {
6398 if (!strcmp(id, refs[i]->id) &&
6399 realloc_refs_list(&list->refs, list->size, 1))
6400 list->refs[list->size++] = refs[i];
6401 }
6403 if (!list->refs) {
6404 free(list);
6405 return NULL;
6406 }
6408 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6409 ref_lists[ref_lists_size++] = list;
6410 return list;
6411 }
6413 static int
6414 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6415 {
6416 struct ref *ref = NULL;
6417 bool tag = FALSE;
6418 bool ltag = FALSE;
6419 bool remote = FALSE;
6420 bool tracked = FALSE;
6421 bool head = FALSE;
6422 int from = 0, to = refs_size - 1;
6424 if (!prefixcmp(name, "refs/tags/")) {
6425 if (!suffixcmp(name, namelen, "^{}")) {
6426 namelen -= 3;
6427 name[namelen] = 0;
6428 } else {
6429 ltag = TRUE;
6430 }
6432 tag = TRUE;
6433 namelen -= STRING_SIZE("refs/tags/");
6434 name += STRING_SIZE("refs/tags/");
6436 } else if (!prefixcmp(name, "refs/remotes/")) {
6437 remote = TRUE;
6438 namelen -= STRING_SIZE("refs/remotes/");
6439 name += STRING_SIZE("refs/remotes/");
6440 tracked = !strcmp(opt_remote, name);
6442 } else if (!prefixcmp(name, "refs/heads/")) {
6443 namelen -= STRING_SIZE("refs/heads/");
6444 name += STRING_SIZE("refs/heads/");
6445 if (!strncmp(opt_head, name, namelen))
6446 return OK;
6448 } else if (!strcmp(name, "HEAD")) {
6449 head = TRUE;
6450 if (*opt_head) {
6451 namelen = strlen(opt_head);
6452 name = opt_head;
6453 }
6454 }
6456 /* If we are reloading or it's an annotated tag, replace the
6457 * previous SHA1 with the resolved commit id; relies on the fact
6458 * git-ls-remote lists the commit id of an annotated tag right
6459 * before the commit id it points to. */
6460 while (from <= to) {
6461 size_t pos = (to + from) / 2;
6462 int cmp = strcmp(name, refs[pos]->name);
6464 if (!cmp) {
6465 ref = refs[pos];
6466 break;
6467 }
6469 if (cmp < 0)
6470 to = pos - 1;
6471 else
6472 from = pos + 1;
6473 }
6475 if (!ref) {
6476 if (!realloc_refs(&refs, refs_size, 1))
6477 return ERR;
6478 ref = calloc(1, sizeof(*ref) + namelen);
6479 if (!ref)
6480 return ERR;
6481 memmove(refs + from + 1, refs + from,
6482 (refs_size - from) * sizeof(*refs));
6483 refs[from] = ref;
6484 strncpy(ref->name, name, namelen);
6485 refs_size++;
6486 }
6488 ref->head = head;
6489 ref->tag = tag;
6490 ref->ltag = ltag;
6491 ref->remote = remote;
6492 ref->tracked = tracked;
6493 string_copy_rev(ref->id, id);
6495 if (head)
6496 refs_head = ref;
6497 return OK;
6498 }
6500 static int
6501 load_refs(void)
6502 {
6503 const char *head_argv[] = {
6504 "git", "symbolic-ref", "HEAD", NULL
6505 };
6506 static const char *ls_remote_argv[SIZEOF_ARG] = {
6507 "git", "ls-remote", opt_git_dir, NULL
6508 };
6509 static bool init = FALSE;
6510 size_t i;
6512 if (!init) {
6513 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6514 die("TIG_LS_REMOTE contains too many arguments");
6515 init = TRUE;
6516 }
6518 if (!*opt_git_dir)
6519 return OK;
6521 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6522 !prefixcmp(opt_head, "refs/heads/")) {
6523 char *offset = opt_head + STRING_SIZE("refs/heads/");
6525 memmove(opt_head, offset, strlen(offset) + 1);
6526 }
6528 refs_head = NULL;
6529 for (i = 0; i < refs_size; i++)
6530 refs[i]->id[0] = 0;
6532 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6533 return ERR;
6535 /* Update the ref lists to reflect changes. */
6536 for (i = 0; i < ref_lists_size; i++) {
6537 struct ref_list *list = ref_lists[i];
6538 size_t old, new;
6540 for (old = new = 0; old < list->size; old++)
6541 if (!strcmp(list->id, list->refs[old]->id))
6542 list->refs[new++] = list->refs[old];
6543 list->size = new;
6544 }
6546 return OK;
6547 }
6549 static void
6550 set_remote_branch(const char *name, const char *value, size_t valuelen)
6551 {
6552 if (!strcmp(name, ".remote")) {
6553 string_ncopy(opt_remote, value, valuelen);
6555 } else if (*opt_remote && !strcmp(name, ".merge")) {
6556 size_t from = strlen(opt_remote);
6558 if (!prefixcmp(value, "refs/heads/"))
6559 value += STRING_SIZE("refs/heads/");
6561 if (!string_format_from(opt_remote, &from, "/%s", value))
6562 opt_remote[0] = 0;
6563 }
6564 }
6566 static void
6567 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6568 {
6569 const char *argv[SIZEOF_ARG] = { name, "=" };
6570 int argc = 1 + (cmd == option_set_command);
6571 enum option_code error;
6573 if (!argv_from_string(argv, &argc, value))
6574 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6575 else
6576 error = cmd(argc, argv);
6578 if (error != OPT_OK)
6579 warn("Option 'tig.%s': %s", name, option_errors[error]);
6580 }
6582 static bool
6583 set_environment_variable(const char *name, const char *value)
6584 {
6585 size_t len = strlen(name) + 1 + strlen(value) + 1;
6586 char *env = malloc(len);
6588 if (env &&
6589 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6590 putenv(env) == 0)
6591 return TRUE;
6592 free(env);
6593 return FALSE;
6594 }
6596 static void
6597 set_work_tree(const char *value)
6598 {
6599 char cwd[SIZEOF_STR];
6601 if (!getcwd(cwd, sizeof(cwd)))
6602 die("Failed to get cwd path: %s", strerror(errno));
6603 if (chdir(opt_git_dir) < 0)
6604 die("Failed to chdir(%s): %s", strerror(errno));
6605 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6606 die("Failed to get git path: %s", strerror(errno));
6607 if (chdir(cwd) < 0)
6608 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6609 if (chdir(value) < 0)
6610 die("Failed to chdir(%s): %s", value, strerror(errno));
6611 if (!getcwd(cwd, sizeof(cwd)))
6612 die("Failed to get cwd path: %s", strerror(errno));
6613 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6614 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6615 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6616 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6617 opt_is_inside_work_tree = TRUE;
6618 }
6620 static int
6621 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6622 {
6623 if (!strcmp(name, "i18n.commitencoding"))
6624 string_ncopy(opt_encoding, value, valuelen);
6626 else if (!strcmp(name, "core.editor"))
6627 string_ncopy(opt_editor, value, valuelen);
6629 else if (!strcmp(name, "core.worktree"))
6630 set_work_tree(value);
6632 else if (!prefixcmp(name, "tig.color."))
6633 set_repo_config_option(name + 10, value, option_color_command);
6635 else if (!prefixcmp(name, "tig.bind."))
6636 set_repo_config_option(name + 9, value, option_bind_command);
6638 else if (!prefixcmp(name, "tig."))
6639 set_repo_config_option(name + 4, value, option_set_command);
6641 else if (*opt_head && !prefixcmp(name, "branch.") &&
6642 !strncmp(name + 7, opt_head, strlen(opt_head)))
6643 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6645 return OK;
6646 }
6648 static int
6649 load_git_config(void)
6650 {
6651 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6653 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6654 }
6656 static int
6657 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6658 {
6659 if (!opt_git_dir[0]) {
6660 string_ncopy(opt_git_dir, name, namelen);
6662 } else if (opt_is_inside_work_tree == -1) {
6663 /* This can be 3 different values depending on the
6664 * version of git being used. If git-rev-parse does not
6665 * understand --is-inside-work-tree it will simply echo
6666 * the option else either "true" or "false" is printed.
6667 * Default to true for the unknown case. */
6668 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6670 } else if (*name == '.') {
6671 string_ncopy(opt_cdup, name, namelen);
6673 } else {
6674 string_ncopy(opt_prefix, name, namelen);
6675 }
6677 return OK;
6678 }
6680 static int
6681 load_repo_info(void)
6682 {
6683 const char *rev_parse_argv[] = {
6684 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6685 "--show-cdup", "--show-prefix", NULL
6686 };
6688 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6689 }
6692 /*
6693 * Main
6694 */
6696 static const char usage[] =
6697 "tig " TIG_VERSION " (" __DATE__ ")\n"
6698 "\n"
6699 "Usage: tig [options] [revs] [--] [paths]\n"
6700 " or: tig show [options] [revs] [--] [paths]\n"
6701 " or: tig blame [options] [rev] [--] path\n"
6702 " or: tig status\n"
6703 " or: tig < [git command output]\n"
6704 "\n"
6705 "Options:\n"
6706 " -v, --version Show version and exit\n"
6707 " -h, --help Show help message and exit";
6709 static void __NORETURN
6710 quit(int sig)
6711 {
6712 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6713 if (cursed)
6714 endwin();
6715 exit(0);
6716 }
6718 static void __NORETURN
6719 die(const char *err, ...)
6720 {
6721 va_list args;
6723 endwin();
6725 va_start(args, err);
6726 fputs("tig: ", stderr);
6727 vfprintf(stderr, err, args);
6728 fputs("\n", stderr);
6729 va_end(args);
6731 exit(1);
6732 }
6734 static void
6735 warn(const char *msg, ...)
6736 {
6737 va_list args;
6739 va_start(args, msg);
6740 fputs("tig warning: ", stderr);
6741 vfprintf(stderr, msg, args);
6742 fputs("\n", stderr);
6743 va_end(args);
6744 }
6746 static int
6747 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6748 {
6749 const char ***filter_args = data;
6751 return argv_append(filter_args, name) ? OK : ERR;
6752 }
6754 static void
6755 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6756 {
6757 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6758 const char **all_argv = NULL;
6760 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6761 !argv_append_array(&all_argv, argv) ||
6762 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6763 die("Failed to split arguments");
6764 argv_free(all_argv);
6765 free(all_argv);
6766 }
6768 static void
6769 filter_options(const char *argv[])
6770 {
6771 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6772 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6773 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6774 }
6776 static enum request
6777 parse_options(int argc, const char *argv[])
6778 {
6779 enum request request = REQ_VIEW_MAIN;
6780 const char *subcommand;
6781 bool seen_dashdash = FALSE;
6782 const char **filter_argv = NULL;
6783 int i;
6785 if (!isatty(STDIN_FILENO))
6786 return REQ_VIEW_PAGER;
6788 if (argc <= 1)
6789 return REQ_VIEW_MAIN;
6791 subcommand = argv[1];
6792 if (!strcmp(subcommand, "status")) {
6793 if (argc > 2)
6794 warn("ignoring arguments after `%s'", subcommand);
6795 return REQ_VIEW_STATUS;
6797 } else if (!strcmp(subcommand, "blame")) {
6798 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6799 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6800 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6802 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6803 die("invalid number of options to blame\n\n%s", usage);
6805 if (opt_rev_argv) {
6806 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6807 }
6809 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6810 return REQ_VIEW_BLAME;
6812 } else if (!strcmp(subcommand, "show")) {
6813 request = REQ_VIEW_DIFF;
6815 } else {
6816 subcommand = NULL;
6817 }
6819 for (i = 1 + !!subcommand; i < argc; i++) {
6820 const char *opt = argv[i];
6822 if (seen_dashdash) {
6823 argv_append(&opt_file_argv, opt);
6824 continue;
6826 } else if (!strcmp(opt, "--")) {
6827 seen_dashdash = TRUE;
6828 continue;
6830 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6831 printf("tig version %s\n", TIG_VERSION);
6832 quit(0);
6834 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6835 printf("%s\n", usage);
6836 quit(0);
6838 } else if (!strcmp(opt, "--all")) {
6839 argv_append(&opt_rev_argv, opt);
6840 continue;
6841 }
6843 if (!argv_append(&filter_argv, opt))
6844 die("command too long");
6845 }
6847 if (filter_argv)
6848 filter_options(filter_argv);
6850 return request;
6851 }
6853 int
6854 main(int argc, const char *argv[])
6855 {
6856 const char *codeset = "UTF-8";
6857 enum request request = parse_options(argc, argv);
6858 struct view *view;
6860 signal(SIGINT, quit);
6861 signal(SIGPIPE, SIG_IGN);
6863 if (setlocale(LC_ALL, "")) {
6864 codeset = nl_langinfo(CODESET);
6865 }
6867 if (load_repo_info() == ERR)
6868 die("Failed to load repo info.");
6870 if (load_options() == ERR)
6871 die("Failed to load user config.");
6873 if (load_git_config() == ERR)
6874 die("Failed to load repo config.");
6876 /* Require a git repository unless when running in pager mode. */
6877 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6878 die("Not a git repository");
6880 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6881 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6882 if (opt_iconv_in == ICONV_NONE)
6883 die("Failed to initialize character set conversion");
6884 }
6886 if (codeset && strcmp(codeset, "UTF-8")) {
6887 opt_iconv_out = iconv_open(codeset, "UTF-8");
6888 if (opt_iconv_out == ICONV_NONE)
6889 die("Failed to initialize character set conversion");
6890 }
6892 if (load_refs() == ERR)
6893 die("Failed to load refs.");
6895 init_display();
6897 while (view_driver(display[current_view], request)) {
6898 int key = get_input(0);
6900 view = display[current_view];
6901 request = get_keybinding(view->keymap, key);
6903 /* Some low-level request handling. This keeps access to
6904 * status_win restricted. */
6905 switch (request) {
6906 case REQ_NONE:
6907 report("Unknown key, press %s for help",
6908 get_key(view->keymap, REQ_VIEW_HELP));
6909 break;
6910 case REQ_PROMPT:
6911 {
6912 char *cmd = read_prompt(":");
6914 if (cmd && isdigit(*cmd)) {
6915 int lineno = view->lineno + 1;
6917 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6918 select_view_line(view, lineno - 1);
6919 report("");
6920 } else {
6921 report("Unable to parse '%s' as a line number", cmd);
6922 }
6924 } else if (cmd) {
6925 struct view *next = VIEW(REQ_VIEW_PAGER);
6926 const char *argv[SIZEOF_ARG] = { "git" };
6927 int argc = 1;
6929 /* When running random commands, initially show the
6930 * command in the title. However, it maybe later be
6931 * overwritten if a commit line is selected. */
6932 string_ncopy(next->ref, cmd, strlen(cmd));
6934 if (!argv_from_string(argv, &argc, cmd)) {
6935 report("Too many arguments");
6936 } else {
6937 open_argv(view, next, argv, NULL, OPEN_DEFAULT);
6938 }
6939 }
6941 request = REQ_NONE;
6942 break;
6943 }
6944 case REQ_SEARCH:
6945 case REQ_SEARCH_BACK:
6946 {
6947 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6948 char *search = read_prompt(prompt);
6950 if (search)
6951 string_ncopy(opt_search, search, strlen(search));
6952 else if (*opt_search)
6953 request = request == REQ_SEARCH ?
6954 REQ_FIND_NEXT :
6955 REQ_FIND_PREV;
6956 else
6957 request = REQ_NONE;
6958 break;
6959 }
6960 default:
6961 break;
6962 }
6963 }
6965 quit(0);
6967 return 0;
6968 }