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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 (is_initial_sep(*author))
162 author++;
164 bytes = utf8_char_length(author, end);
165 if (bytes < sizeof(initials) - 1 - pos) {
166 while (bytes--) {
167 initials[pos++] = *author++;
168 }
169 }
171 for (i = pos; author < end && !is_initial_sep(*author); author++) {
172 if (i < sizeof(initials) - 1)
173 initials[i++] = *author;
174 }
176 initials[i++] = 0;
177 }
179 return initials;
180 }
182 #define author_trim(cols) (cols == 0 || cols > 5)
184 static const char *
185 mkauthor(const char *text, int cols, enum author author)
186 {
187 bool trim = author_trim(cols);
188 bool abbreviate = author == AUTHOR_ABBREVIATED || !trim;
190 if (author == AUTHOR_NO)
191 return "";
192 if (abbreviate && text)
193 return get_author_initials(text);
194 return text;
195 }
197 static const char *
198 mkmode(mode_t mode)
199 {
200 if (S_ISDIR(mode))
201 return "drwxr-xr-x";
202 else if (S_ISLNK(mode))
203 return "lrwxrwxrwx";
204 else if (S_ISGITLINK(mode))
205 return "m---------";
206 else if (S_ISREG(mode) && mode & S_IXUSR)
207 return "-rwxr-xr-x";
208 else if (S_ISREG(mode))
209 return "-rw-r--r--";
210 else
211 return "----------";
212 }
215 /*
216 * User requests
217 */
219 #define REQ_INFO \
220 /* XXX: Keep the view request first and in sync with views[]. */ \
221 REQ_GROUP("View switching") \
222 REQ_(VIEW_MAIN, "Show main view"), \
223 REQ_(VIEW_DIFF, "Show diff view"), \
224 REQ_(VIEW_LOG, "Show log view"), \
225 REQ_(VIEW_TREE, "Show tree view"), \
226 REQ_(VIEW_BLOB, "Show blob view"), \
227 REQ_(VIEW_BLAME, "Show blame view"), \
228 REQ_(VIEW_BRANCH, "Show branch view"), \
229 REQ_(VIEW_HELP, "Show help page"), \
230 REQ_(VIEW_PAGER, "Show pager view"), \
231 REQ_(VIEW_STATUS, "Show status view"), \
232 REQ_(VIEW_STAGE, "Show stage view"), \
233 \
234 REQ_GROUP("View manipulation") \
235 REQ_(ENTER, "Enter current line and scroll"), \
236 REQ_(NEXT, "Move to next"), \
237 REQ_(PREVIOUS, "Move to previous"), \
238 REQ_(PARENT, "Move to parent"), \
239 REQ_(VIEW_NEXT, "Move focus to next view"), \
240 REQ_(REFRESH, "Reload and refresh"), \
241 REQ_(MAXIMIZE, "Maximize the current view"), \
242 REQ_(VIEW_CLOSE, "Close the current view"), \
243 REQ_(QUIT, "Close all views and quit"), \
244 \
245 REQ_GROUP("View specific requests") \
246 REQ_(STATUS_UPDATE, "Update file status"), \
247 REQ_(STATUS_REVERT, "Revert file changes"), \
248 REQ_(STATUS_MERGE, "Merge file using external tool"), \
249 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
250 \
251 REQ_GROUP("Cursor navigation") \
252 REQ_(MOVE_UP, "Move cursor one line up"), \
253 REQ_(MOVE_DOWN, "Move cursor one line down"), \
254 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
255 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
256 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
257 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
258 \
259 REQ_GROUP("Scrolling") \
260 REQ_(SCROLL_FIRST_COL, "Scroll to the first line columns"), \
261 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
262 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
263 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
264 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
265 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
266 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
267 \
268 REQ_GROUP("Searching") \
269 REQ_(SEARCH, "Search the view"), \
270 REQ_(SEARCH_BACK, "Search backwards in the view"), \
271 REQ_(FIND_NEXT, "Find next search match"), \
272 REQ_(FIND_PREV, "Find previous search match"), \
273 \
274 REQ_GROUP("Option manipulation") \
275 REQ_(OPTIONS, "Open option menu"), \
276 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
277 REQ_(TOGGLE_DATE, "Toggle date display"), \
278 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
279 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
280 REQ_(TOGGLE_GRAPHIC, "Toggle (line) graphics mode"), \
281 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
282 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
283 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
284 \
285 REQ_GROUP("Misc") \
286 REQ_(PROMPT, "Bring up the prompt"), \
287 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
288 REQ_(SHOW_VERSION, "Show version information"), \
289 REQ_(STOP_LOADING, "Stop all loading views"), \
290 REQ_(EDIT, "Open in editor"), \
291 REQ_(NONE, "Do nothing")
294 /* User action requests. */
295 enum request {
296 #define REQ_GROUP(help)
297 #define REQ_(req, help) REQ_##req
299 /* Offset all requests to avoid conflicts with ncurses getch values. */
300 REQ_UNKNOWN = KEY_MAX + 1,
301 REQ_OFFSET,
302 REQ_INFO
304 #undef REQ_GROUP
305 #undef REQ_
306 };
308 struct request_info {
309 enum request request;
310 const char *name;
311 int namelen;
312 const char *help;
313 };
315 static const struct request_info req_info[] = {
316 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
317 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
318 REQ_INFO
319 #undef REQ_GROUP
320 #undef REQ_
321 };
323 static enum request
324 get_request(const char *name)
325 {
326 int namelen = strlen(name);
327 int i;
329 for (i = 0; i < ARRAY_SIZE(req_info); i++)
330 if (enum_equals(req_info[i], name, namelen))
331 return req_info[i].request;
333 return REQ_UNKNOWN;
334 }
337 /*
338 * Options
339 */
341 /* Option and state variables. */
342 static enum graphic opt_line_graphics = GRAPHIC_DEFAULT;
343 static enum date opt_date = DATE_DEFAULT;
344 static enum author opt_author = AUTHOR_FULL;
345 static bool opt_rev_graph = TRUE;
346 static bool opt_line_number = FALSE;
347 static bool opt_show_refs = TRUE;
348 static bool opt_untracked_dirs_content = TRUE;
349 static int opt_num_interval = 5;
350 static double opt_hscroll = 0.50;
351 static double opt_scale_split_view = 2.0 / 3.0;
352 static int opt_tab_size = 8;
353 static int opt_author_cols = AUTHOR_COLS;
354 static char opt_path[SIZEOF_STR] = "";
355 static char opt_file[SIZEOF_STR] = "";
356 static char opt_ref[SIZEOF_REF] = "";
357 static char opt_head[SIZEOF_REF] = "";
358 static char opt_remote[SIZEOF_REF] = "";
359 static char opt_encoding[20] = "UTF-8";
360 static iconv_t opt_iconv_in = ICONV_NONE;
361 static iconv_t opt_iconv_out = ICONV_NONE;
362 static char opt_search[SIZEOF_STR] = "";
363 static char opt_cdup[SIZEOF_STR] = "";
364 static char opt_prefix[SIZEOF_STR] = "";
365 static char opt_git_dir[SIZEOF_STR] = "";
366 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
367 static char opt_editor[SIZEOF_STR] = "";
368 static FILE *opt_tty = NULL;
369 static const char **opt_diff_argv = NULL;
370 static const char **opt_rev_argv = NULL;
371 static const char **opt_file_argv = NULL;
372 static const char **opt_blame_argv = NULL;
374 #define is_initial_commit() (!get_ref_head())
375 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strcmp(rev, get_ref_head()->id)))
378 /*
379 * Line-oriented content detection.
380 */
382 #define LINE_INFO \
383 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
384 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
385 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
386 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
387 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
388 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
389 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
390 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
391 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
392 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
393 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
394 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
395 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
396 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
397 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
398 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
399 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
400 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
401 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
402 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
403 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
404 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
405 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
406 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
407 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
408 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
409 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
410 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
411 LINE(TESTED, " Tested-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
412 LINE(REVIEWED, " Reviewed-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
413 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
414 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
415 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
416 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
417 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
418 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
419 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
420 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
421 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
422 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
423 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
424 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
425 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
426 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
427 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
428 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
429 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
430 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
431 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
432 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
433 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
434 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
435 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
436 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
437 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
438 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
439 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
440 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
441 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
442 LINE(GRAPH_LINE_0, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
443 LINE(GRAPH_LINE_1, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
444 LINE(GRAPH_LINE_2, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
445 LINE(GRAPH_LINE_3, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
446 LINE(GRAPH_LINE_4, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
447 LINE(GRAPH_LINE_5, "", COLOR_WHITE, COLOR_DEFAULT, 0), \
448 LINE(GRAPH_LINE_6, "", COLOR_RED, COLOR_DEFAULT, 0), \
449 LINE(GRAPH_COMMIT, "", COLOR_BLUE, COLOR_DEFAULT, 0)
451 enum line_type {
452 #define LINE(type, line, fg, bg, attr) \
453 LINE_##type
454 LINE_INFO,
455 LINE_NONE
456 #undef LINE
457 };
459 struct line_info {
460 const char *name; /* Option name. */
461 int namelen; /* Size of option name. */
462 const char *line; /* The start of line to match. */
463 int linelen; /* Size of string to match. */
464 int fg, bg, attr; /* Color and text attributes for the lines. */
465 };
467 static struct line_info line_info[] = {
468 #define LINE(type, line, fg, bg, attr) \
469 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
470 LINE_INFO
471 #undef LINE
472 };
474 static enum line_type
475 get_line_type(const char *line)
476 {
477 int linelen = strlen(line);
478 enum line_type type;
480 for (type = 0; type < ARRAY_SIZE(line_info); type++)
481 /* Case insensitive search matches Signed-off-by lines better. */
482 if (linelen >= line_info[type].linelen &&
483 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
484 return type;
486 return LINE_DEFAULT;
487 }
489 static inline int
490 get_line_attr(enum line_type type)
491 {
492 assert(type < ARRAY_SIZE(line_info));
493 return COLOR_PAIR(type) | line_info[type].attr;
494 }
496 static struct line_info *
497 get_line_info(const char *name)
498 {
499 size_t namelen = strlen(name);
500 enum line_type type;
502 for (type = 0; type < ARRAY_SIZE(line_info); type++)
503 if (enum_equals(line_info[type], name, namelen))
504 return &line_info[type];
506 return NULL;
507 }
509 static void
510 init_colors(void)
511 {
512 int default_bg = line_info[LINE_DEFAULT].bg;
513 int default_fg = line_info[LINE_DEFAULT].fg;
514 enum line_type type;
516 start_color();
518 if (assume_default_colors(default_fg, default_bg) == ERR) {
519 default_bg = COLOR_BLACK;
520 default_fg = COLOR_WHITE;
521 }
523 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
524 struct line_info *info = &line_info[type];
525 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
526 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
528 init_pair(type, fg, bg);
529 }
530 }
532 struct line {
533 enum line_type type;
535 /* State flags */
536 unsigned int selected:1;
537 unsigned int dirty:1;
538 unsigned int cleareol:1;
539 unsigned int other:16;
541 void *data; /* User data */
542 };
545 /*
546 * Keys
547 */
549 struct keybinding {
550 int alias;
551 enum request request;
552 };
554 static struct keybinding default_keybindings[] = {
555 /* View switching */
556 { 'm', REQ_VIEW_MAIN },
557 { 'd', REQ_VIEW_DIFF },
558 { 'l', REQ_VIEW_LOG },
559 { 't', REQ_VIEW_TREE },
560 { 'f', REQ_VIEW_BLOB },
561 { 'B', REQ_VIEW_BLAME },
562 { 'H', REQ_VIEW_BRANCH },
563 { 'p', REQ_VIEW_PAGER },
564 { 'h', REQ_VIEW_HELP },
565 { 'S', REQ_VIEW_STATUS },
566 { 'c', REQ_VIEW_STAGE },
568 /* View manipulation */
569 { 'q', REQ_VIEW_CLOSE },
570 { KEY_TAB, REQ_VIEW_NEXT },
571 { KEY_RETURN, REQ_ENTER },
572 { KEY_UP, REQ_PREVIOUS },
573 { KEY_CTL('P'), REQ_PREVIOUS },
574 { KEY_DOWN, REQ_NEXT },
575 { KEY_CTL('N'), REQ_NEXT },
576 { 'R', REQ_REFRESH },
577 { KEY_F(5), REQ_REFRESH },
578 { 'O', REQ_MAXIMIZE },
580 /* Cursor navigation */
581 { 'k', REQ_MOVE_UP },
582 { 'j', REQ_MOVE_DOWN },
583 { KEY_HOME, REQ_MOVE_FIRST_LINE },
584 { KEY_END, REQ_MOVE_LAST_LINE },
585 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
586 { KEY_CTL('D'), REQ_MOVE_PAGE_DOWN },
587 { ' ', REQ_MOVE_PAGE_DOWN },
588 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
589 { KEY_CTL('U'), REQ_MOVE_PAGE_UP },
590 { 'b', REQ_MOVE_PAGE_UP },
591 { '-', REQ_MOVE_PAGE_UP },
593 /* Scrolling */
594 { '|', REQ_SCROLL_FIRST_COL },
595 { KEY_LEFT, REQ_SCROLL_LEFT },
596 { KEY_RIGHT, REQ_SCROLL_RIGHT },
597 { KEY_IC, REQ_SCROLL_LINE_UP },
598 { KEY_CTL('Y'), REQ_SCROLL_LINE_UP },
599 { KEY_DC, REQ_SCROLL_LINE_DOWN },
600 { KEY_CTL('E'), REQ_SCROLL_LINE_DOWN },
601 { 'w', REQ_SCROLL_PAGE_UP },
602 { 's', REQ_SCROLL_PAGE_DOWN },
604 /* Searching */
605 { '/', REQ_SEARCH },
606 { '?', REQ_SEARCH_BACK },
607 { 'n', REQ_FIND_NEXT },
608 { 'N', REQ_FIND_PREV },
610 /* Misc */
611 { 'Q', REQ_QUIT },
612 { 'z', REQ_STOP_LOADING },
613 { 'v', REQ_SHOW_VERSION },
614 { 'r', REQ_SCREEN_REDRAW },
615 { KEY_CTL('L'), REQ_SCREEN_REDRAW },
616 { 'o', REQ_OPTIONS },
617 { '.', REQ_TOGGLE_LINENO },
618 { 'D', REQ_TOGGLE_DATE },
619 { 'A', REQ_TOGGLE_AUTHOR },
620 { 'g', REQ_TOGGLE_REV_GRAPH },
621 { '~', REQ_TOGGLE_GRAPHIC },
622 { 'F', REQ_TOGGLE_REFS },
623 { 'I', REQ_TOGGLE_SORT_ORDER },
624 { 'i', REQ_TOGGLE_SORT_FIELD },
625 { ':', REQ_PROMPT },
626 { 'u', REQ_STATUS_UPDATE },
627 { '!', REQ_STATUS_REVERT },
628 { 'M', REQ_STATUS_MERGE },
629 { '@', REQ_STAGE_NEXT },
630 { ',', REQ_PARENT },
631 { 'e', REQ_EDIT },
632 };
634 #define KEYMAP_ENUM(_) \
635 _(KEYMAP, GENERIC), \
636 _(KEYMAP, MAIN), \
637 _(KEYMAP, DIFF), \
638 _(KEYMAP, LOG), \
639 _(KEYMAP, TREE), \
640 _(KEYMAP, BLOB), \
641 _(KEYMAP, BLAME), \
642 _(KEYMAP, BRANCH), \
643 _(KEYMAP, PAGER), \
644 _(KEYMAP, HELP), \
645 _(KEYMAP, STATUS), \
646 _(KEYMAP, STAGE)
648 DEFINE_ENUM(keymap, KEYMAP_ENUM);
650 #define set_keymap(map, name) map_enum(map, keymap_map, name)
652 struct keybinding_table {
653 struct keybinding *data;
654 size_t size;
655 };
657 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_map)];
659 static void
660 add_keybinding(enum keymap keymap, enum request request, int key)
661 {
662 struct keybinding_table *table = &keybindings[keymap];
663 size_t i;
665 for (i = 0; i < keybindings[keymap].size; i++) {
666 if (keybindings[keymap].data[i].alias == key) {
667 keybindings[keymap].data[i].request = request;
668 return;
669 }
670 }
672 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
673 if (!table->data)
674 die("Failed to allocate keybinding");
675 table->data[table->size].alias = key;
676 table->data[table->size++].request = request;
678 if (request == REQ_NONE && keymap == KEYMAP_GENERIC) {
679 int i;
681 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
682 if (default_keybindings[i].alias == key)
683 default_keybindings[i].request = REQ_NONE;
684 }
685 }
687 /* Looks for a key binding first in the given map, then in the generic map, and
688 * lastly in the default keybindings. */
689 static enum request
690 get_keybinding(enum keymap keymap, int key)
691 {
692 size_t i;
694 for (i = 0; i < keybindings[keymap].size; i++)
695 if (keybindings[keymap].data[i].alias == key)
696 return keybindings[keymap].data[i].request;
698 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
699 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
700 return keybindings[KEYMAP_GENERIC].data[i].request;
702 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
703 if (default_keybindings[i].alias == key)
704 return default_keybindings[i].request;
706 return (enum request) key;
707 }
710 struct key {
711 const char *name;
712 int value;
713 };
715 static const struct key key_table[] = {
716 { "Enter", KEY_RETURN },
717 { "Space", ' ' },
718 { "Backspace", KEY_BACKSPACE },
719 { "Tab", KEY_TAB },
720 { "Escape", KEY_ESC },
721 { "Left", KEY_LEFT },
722 { "Right", KEY_RIGHT },
723 { "Up", KEY_UP },
724 { "Down", KEY_DOWN },
725 { "Insert", KEY_IC },
726 { "Delete", KEY_DC },
727 { "Hash", '#' },
728 { "Home", KEY_HOME },
729 { "End", KEY_END },
730 { "PageUp", KEY_PPAGE },
731 { "PageDown", KEY_NPAGE },
732 { "F1", KEY_F(1) },
733 { "F2", KEY_F(2) },
734 { "F3", KEY_F(3) },
735 { "F4", KEY_F(4) },
736 { "F5", KEY_F(5) },
737 { "F6", KEY_F(6) },
738 { "F7", KEY_F(7) },
739 { "F8", KEY_F(8) },
740 { "F9", KEY_F(9) },
741 { "F10", KEY_F(10) },
742 { "F11", KEY_F(11) },
743 { "F12", KEY_F(12) },
744 };
746 static int
747 get_key_value(const char *name)
748 {
749 int i;
751 for (i = 0; i < ARRAY_SIZE(key_table); i++)
752 if (!strcasecmp(key_table[i].name, name))
753 return key_table[i].value;
755 if (strlen(name) == 2 && name[0] == '^' && isprint(*name))
756 return (int)name[1] & 0x1f;
757 if (strlen(name) == 1 && isprint(*name))
758 return (int) *name;
759 return ERR;
760 }
762 static const char *
763 get_key_name(int key_value)
764 {
765 static char key_char[] = "'X'\0";
766 const char *seq = NULL;
767 int key;
769 for (key = 0; key < ARRAY_SIZE(key_table); key++)
770 if (key_table[key].value == key_value)
771 seq = key_table[key].name;
773 if (seq == NULL && key_value < 0x7f) {
774 char *s = key_char + 1;
776 if (key_value >= 0x20) {
777 *s++ = key_value;
778 } else {
779 *s++ = '^';
780 *s++ = 0x40 | (key_value & 0x1f);
781 }
782 *s++ = '\'';
783 *s++ = '\0';
784 seq = key_char;
785 }
787 return seq ? seq : "(no key)";
788 }
790 static bool
791 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
792 {
793 const char *sep = *pos > 0 ? ", " : "";
794 const char *keyname = get_key_name(keybinding->alias);
796 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
797 }
799 static bool
800 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
801 enum keymap keymap, bool all)
802 {
803 int i;
805 for (i = 0; i < keybindings[keymap].size; i++) {
806 if (keybindings[keymap].data[i].request == request) {
807 if (!append_key(buf, pos, &keybindings[keymap].data[i]))
808 return FALSE;
809 if (!all)
810 break;
811 }
812 }
814 return TRUE;
815 }
817 #define get_key(keymap, request) get_keys(keymap, request, FALSE)
819 static const char *
820 get_keys(enum keymap keymap, enum request request, bool all)
821 {
822 static char buf[BUFSIZ];
823 size_t pos = 0;
824 int i;
826 buf[pos] = 0;
828 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
829 return "Too many keybindings!";
830 if (pos > 0 && !all)
831 return buf;
833 if (keymap != KEYMAP_GENERIC) {
834 /* Only the generic keymap includes the default keybindings when
835 * listing all keys. */
836 if (all)
837 return buf;
839 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
840 return "Too many keybindings!";
841 if (pos)
842 return buf;
843 }
845 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
846 if (default_keybindings[i].request == request) {
847 if (!append_key(buf, &pos, &default_keybindings[i]))
848 return "Too many keybindings!";
849 if (!all)
850 return buf;
851 }
852 }
854 return buf;
855 }
857 struct run_request {
858 enum keymap keymap;
859 int key;
860 const char **argv;
861 };
863 static struct run_request *run_request;
864 static size_t run_requests;
866 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
868 static enum request
869 add_run_request(enum keymap keymap, int key, const char **argv)
870 {
871 struct run_request *req;
873 if (!realloc_run_requests(&run_request, run_requests, 1))
874 return REQ_NONE;
876 req = &run_request[run_requests];
877 req->keymap = keymap;
878 req->key = key;
879 req->argv = NULL;
881 if (!argv_copy(&req->argv, argv))
882 return REQ_NONE;
884 return REQ_NONE + ++run_requests;
885 }
887 static struct run_request *
888 get_run_request(enum request request)
889 {
890 if (request <= REQ_NONE)
891 return NULL;
892 return &run_request[request - REQ_NONE - 1];
893 }
895 static void
896 add_builtin_run_requests(void)
897 {
898 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
899 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
900 const char *commit[] = { "git", "commit", NULL };
901 const char *gc[] = { "git", "gc", NULL };
902 struct run_request reqs[] = {
903 { KEYMAP_MAIN, 'C', cherry_pick },
904 { KEYMAP_STATUS, 'C', commit },
905 { KEYMAP_BRANCH, 'C', checkout },
906 { KEYMAP_GENERIC, 'G', gc },
907 };
908 int i;
910 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
911 enum request req = get_keybinding(reqs[i].keymap, reqs[i].key);
913 if (req != reqs[i].key)
914 continue;
915 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argv);
916 if (req != REQ_NONE)
917 add_keybinding(reqs[i].keymap, req, reqs[i].key);
918 }
919 }
921 /*
922 * User config file handling.
923 */
925 #define OPT_ERR_INFO \
926 OPT_ERR_(INTEGER_VALUE_OUT_OF_BOUND, "Integer value out of bound"), \
927 OPT_ERR_(INVALID_STEP_VALUE, "Invalid step value"), \
928 OPT_ERR_(NO_OPTION_VALUE, "No option value"), \
929 OPT_ERR_(NO_VALUE_ASSIGNED, "No value assigned"), \
930 OPT_ERR_(OBSOLETE_REQUEST_NAME, "Obsolete request name"), \
931 OPT_ERR_(OUT_OF_MEMORY, "Out of memory"), \
932 OPT_ERR_(TOO_MANY_OPTION_ARGUMENTS, "Too many option arguments"), \
933 OPT_ERR_(UNKNOWN_ATTRIBUTE, "Unknown attribute"), \
934 OPT_ERR_(UNKNOWN_COLOR, "Unknown color"), \
935 OPT_ERR_(UNKNOWN_COLOR_NAME, "Unknown color name"), \
936 OPT_ERR_(UNKNOWN_KEY, "Unknown key"), \
937 OPT_ERR_(UNKNOWN_KEY_MAP, "Unknown key map"), \
938 OPT_ERR_(UNKNOWN_OPTION_COMMAND, "Unknown option command"), \
939 OPT_ERR_(UNKNOWN_REQUEST_NAME, "Unknown request name"), \
940 OPT_ERR_(UNKNOWN_VARIABLE_NAME, "Unknown variable name"), \
941 OPT_ERR_(UNMATCHED_QUOTATION, "Unmatched quotation"), \
942 OPT_ERR_(WRONG_NUMBER_OF_ARGUMENTS, "Wrong number of arguments"),
944 enum option_code {
945 #define OPT_ERR_(name, msg) OPT_ERR_ ## name
946 OPT_ERR_INFO
947 #undef OPT_ERR_
948 OPT_OK
949 };
951 static const char *option_errors[] = {
952 #define OPT_ERR_(name, msg) msg
953 OPT_ERR_INFO
954 #undef OPT_ERR_
955 };
957 static const struct enum_map color_map[] = {
958 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
959 COLOR_MAP(DEFAULT),
960 COLOR_MAP(BLACK),
961 COLOR_MAP(BLUE),
962 COLOR_MAP(CYAN),
963 COLOR_MAP(GREEN),
964 COLOR_MAP(MAGENTA),
965 COLOR_MAP(RED),
966 COLOR_MAP(WHITE),
967 COLOR_MAP(YELLOW),
968 };
970 static const struct enum_map attr_map[] = {
971 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
972 ATTR_MAP(NORMAL),
973 ATTR_MAP(BLINK),
974 ATTR_MAP(BOLD),
975 ATTR_MAP(DIM),
976 ATTR_MAP(REVERSE),
977 ATTR_MAP(STANDOUT),
978 ATTR_MAP(UNDERLINE),
979 };
981 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
983 static enum option_code
984 parse_step(double *opt, const char *arg)
985 {
986 *opt = atoi(arg);
987 if (!strchr(arg, '%'))
988 return OPT_OK;
990 /* "Shift down" so 100% and 1 does not conflict. */
991 *opt = (*opt - 1) / 100;
992 if (*opt >= 1.0) {
993 *opt = 0.99;
994 return OPT_ERR_INVALID_STEP_VALUE;
995 }
996 if (*opt < 0.0) {
997 *opt = 1;
998 return OPT_ERR_INVALID_STEP_VALUE;
999 }
1000 return OPT_OK;
1001 }
1003 static enum option_code
1004 parse_int(int *opt, const char *arg, int min, int max)
1005 {
1006 int value = atoi(arg);
1008 if (min <= value && value <= max) {
1009 *opt = value;
1010 return OPT_OK;
1011 }
1013 return OPT_ERR_INTEGER_VALUE_OUT_OF_BOUND;
1014 }
1016 static bool
1017 set_color(int *color, const char *name)
1018 {
1019 if (map_enum(color, color_map, name))
1020 return TRUE;
1021 if (!prefixcmp(name, "color"))
1022 return parse_int(color, name + 5, 0, 255) == OK;
1023 return FALSE;
1024 }
1026 /* Wants: object fgcolor bgcolor [attribute] */
1027 static enum option_code
1028 option_color_command(int argc, const char *argv[])
1029 {
1030 struct line_info *info;
1032 if (argc < 3)
1033 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1035 info = get_line_info(argv[0]);
1036 if (!info) {
1037 static const struct enum_map obsolete[] = {
1038 ENUM_MAP("main-delim", LINE_DELIMITER),
1039 ENUM_MAP("main-date", LINE_DATE),
1040 ENUM_MAP("main-author", LINE_AUTHOR),
1041 };
1042 int index;
1044 if (!map_enum(&index, obsolete, argv[0]))
1045 return OPT_ERR_UNKNOWN_COLOR_NAME;
1046 info = &line_info[index];
1047 }
1049 if (!set_color(&info->fg, argv[1]) ||
1050 !set_color(&info->bg, argv[2]))
1051 return OPT_ERR_UNKNOWN_COLOR;
1053 info->attr = 0;
1054 while (argc-- > 3) {
1055 int attr;
1057 if (!set_attribute(&attr, argv[argc]))
1058 return OPT_ERR_UNKNOWN_ATTRIBUTE;
1059 info->attr |= attr;
1060 }
1062 return OPT_OK;
1063 }
1065 static enum option_code
1066 parse_bool(bool *opt, const char *arg)
1067 {
1068 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1069 ? TRUE : FALSE;
1070 return OPT_OK;
1071 }
1073 static enum option_code
1074 parse_enum_do(unsigned int *opt, const char *arg,
1075 const struct enum_map *map, size_t map_size)
1076 {
1077 bool is_true;
1079 assert(map_size > 1);
1081 if (map_enum_do(map, map_size, (int *) opt, arg))
1082 return OPT_OK;
1084 parse_bool(&is_true, arg);
1085 *opt = is_true ? map[1].value : map[0].value;
1086 return OPT_OK;
1087 }
1089 #define parse_enum(opt, arg, map) \
1090 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1092 static enum option_code
1093 parse_string(char *opt, const char *arg, size_t optsize)
1094 {
1095 int arglen = strlen(arg);
1097 switch (arg[0]) {
1098 case '\"':
1099 case '\'':
1100 if (arglen == 1 || arg[arglen - 1] != arg[0])
1101 return OPT_ERR_UNMATCHED_QUOTATION;
1102 arg += 1; arglen -= 2;
1103 default:
1104 string_ncopy_do(opt, optsize, arg, arglen);
1105 return OPT_OK;
1106 }
1107 }
1109 static enum option_code
1110 parse_args(const char ***args, const char *argv[])
1111 {
1112 if (*args == NULL && !argv_copy(args, argv))
1113 return OPT_ERR_OUT_OF_MEMORY;
1114 return OPT_OK;
1115 }
1117 /* Wants: name = value */
1118 static enum option_code
1119 option_set_command(int argc, const char *argv[])
1120 {
1121 if (argc < 3)
1122 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1124 if (strcmp(argv[1], "="))
1125 return OPT_ERR_NO_VALUE_ASSIGNED;
1127 if (!strcmp(argv[0], "blame-options"))
1128 return parse_args(&opt_blame_argv, argv + 2);
1130 if (argc != 3)
1131 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1133 if (!strcmp(argv[0], "show-author"))
1134 return parse_enum(&opt_author, argv[2], author_map);
1136 if (!strcmp(argv[0], "show-date"))
1137 return parse_enum(&opt_date, argv[2], date_map);
1139 if (!strcmp(argv[0], "show-rev-graph"))
1140 return parse_bool(&opt_rev_graph, argv[2]);
1142 if (!strcmp(argv[0], "show-refs"))
1143 return parse_bool(&opt_show_refs, argv[2]);
1145 if (!strcmp(argv[0], "show-line-numbers"))
1146 return parse_bool(&opt_line_number, argv[2]);
1148 if (!strcmp(argv[0], "line-graphics"))
1149 return parse_enum(&opt_line_graphics, argv[2], graphic_map);
1151 if (!strcmp(argv[0], "line-number-interval"))
1152 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1154 if (!strcmp(argv[0], "author-width"))
1155 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1157 if (!strcmp(argv[0], "horizontal-scroll"))
1158 return parse_step(&opt_hscroll, argv[2]);
1160 if (!strcmp(argv[0], "split-view-height"))
1161 return parse_step(&opt_scale_split_view, argv[2]);
1163 if (!strcmp(argv[0], "tab-size"))
1164 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1166 if (!strcmp(argv[0], "commit-encoding"))
1167 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1169 if (!strcmp(argv[0], "status-untracked-dirs"))
1170 return parse_bool(&opt_untracked_dirs_content, argv[2]);
1172 return OPT_ERR_UNKNOWN_VARIABLE_NAME;
1173 }
1175 /* Wants: mode request key */
1176 static enum option_code
1177 option_bind_command(int argc, const char *argv[])
1178 {
1179 enum request request;
1180 int keymap = -1;
1181 int key;
1183 if (argc < 3)
1184 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1186 if (!set_keymap(&keymap, argv[0]))
1187 return OPT_ERR_UNKNOWN_KEY_MAP;
1189 key = get_key_value(argv[1]);
1190 if (key == ERR)
1191 return OPT_ERR_UNKNOWN_KEY;
1193 request = get_request(argv[2]);
1194 if (request == REQ_UNKNOWN) {
1195 static const struct enum_map obsolete[] = {
1196 ENUM_MAP("cherry-pick", REQ_NONE),
1197 ENUM_MAP("screen-resize", REQ_NONE),
1198 ENUM_MAP("tree-parent", REQ_PARENT),
1199 };
1200 int alias;
1202 if (map_enum(&alias, obsolete, argv[2])) {
1203 if (alias != REQ_NONE)
1204 add_keybinding(keymap, alias, key);
1205 return OPT_ERR_OBSOLETE_REQUEST_NAME;
1206 }
1207 }
1208 if (request == REQ_UNKNOWN && *argv[2]++ == '!')
1209 request = add_run_request(keymap, key, argv + 2);
1210 if (request == REQ_UNKNOWN)
1211 return OPT_ERR_UNKNOWN_REQUEST_NAME;
1213 add_keybinding(keymap, request, key);
1215 return OPT_OK;
1216 }
1218 static enum option_code
1219 set_option(const char *opt, char *value)
1220 {
1221 const char *argv[SIZEOF_ARG];
1222 int argc = 0;
1224 if (!argv_from_string(argv, &argc, value))
1225 return OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
1227 if (!strcmp(opt, "color"))
1228 return option_color_command(argc, argv);
1230 if (!strcmp(opt, "set"))
1231 return option_set_command(argc, argv);
1233 if (!strcmp(opt, "bind"))
1234 return option_bind_command(argc, argv);
1236 return OPT_ERR_UNKNOWN_OPTION_COMMAND;
1237 }
1239 struct config_state {
1240 int lineno;
1241 bool errors;
1242 };
1244 static int
1245 read_option(char *opt, size_t optlen, char *value, size_t valuelen, void *data)
1246 {
1247 struct config_state *config = data;
1248 enum option_code status = OPT_ERR_NO_OPTION_VALUE;
1250 config->lineno++;
1252 /* Check for comment markers, since read_properties() will
1253 * only ensure opt and value are split at first " \t". */
1254 optlen = strcspn(opt, "#");
1255 if (optlen == 0)
1256 return OK;
1258 if (opt[optlen] == 0) {
1259 /* Look for comment endings in the value. */
1260 size_t len = strcspn(value, "#");
1262 if (len < valuelen) {
1263 valuelen = len;
1264 value[valuelen] = 0;
1265 }
1267 status = set_option(opt, value);
1268 }
1270 if (status != OPT_OK) {
1271 warn("Error on line %d, near '%.*s': %s",
1272 config->lineno, (int) optlen, opt, option_errors[status]);
1273 config->errors = TRUE;
1274 }
1276 /* Always keep going if errors are encountered. */
1277 return OK;
1278 }
1280 static void
1281 load_option_file(const char *path)
1282 {
1283 struct config_state config = { 0, FALSE };
1284 struct io io;
1286 /* It's OK that the file doesn't exist. */
1287 if (!io_open(&io, "%s", path))
1288 return;
1290 if (io_load(&io, " \t", read_option, &config) == ERR ||
1291 config.errors == TRUE)
1292 warn("Errors while loading %s.", path);
1293 }
1295 static int
1296 load_options(void)
1297 {
1298 const char *home = getenv("HOME");
1299 const char *tigrc_user = getenv("TIGRC_USER");
1300 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1301 const char *tig_diff_opts = getenv("TIG_DIFF_OPTS");
1302 char buf[SIZEOF_STR];
1304 if (!tigrc_system)
1305 tigrc_system = SYSCONFDIR "/tigrc";
1306 load_option_file(tigrc_system);
1308 if (!tigrc_user) {
1309 if (!home || !string_format(buf, "%s/.tigrc", home))
1310 return ERR;
1311 tigrc_user = buf;
1312 }
1313 load_option_file(tigrc_user);
1315 /* Add _after_ loading config files to avoid adding run requests
1316 * that conflict with keybindings. */
1317 add_builtin_run_requests();
1319 if (!opt_diff_argv && tig_diff_opts && *tig_diff_opts) {
1320 static const char *diff_opts[SIZEOF_ARG] = { NULL };
1321 int argc = 0;
1323 if (!string_format(buf, "%s", tig_diff_opts) ||
1324 !argv_from_string(diff_opts, &argc, buf))
1325 die("TIG_DIFF_OPTS contains too many arguments");
1326 else if (!argv_copy(&opt_diff_argv, diff_opts))
1327 die("Failed to format TIG_DIFF_OPTS arguments");
1328 }
1330 return OK;
1331 }
1334 /*
1335 * The viewer
1336 */
1338 struct view;
1339 struct view_ops;
1341 /* The display array of active views and the index of the current view. */
1342 static struct view *display[2];
1343 static WINDOW *display_win[2];
1344 static WINDOW *display_title[2];
1345 static unsigned int current_view;
1347 #define foreach_displayed_view(view, i) \
1348 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1350 #define displayed_views() (display[1] != NULL ? 2 : 1)
1352 /* Current head and commit ID */
1353 static char ref_blob[SIZEOF_REF] = "";
1354 static char ref_commit[SIZEOF_REF] = "HEAD";
1355 static char ref_head[SIZEOF_REF] = "HEAD";
1356 static char ref_branch[SIZEOF_REF] = "";
1358 enum view_type {
1359 VIEW_MAIN,
1360 VIEW_DIFF,
1361 VIEW_LOG,
1362 VIEW_TREE,
1363 VIEW_BLOB,
1364 VIEW_BLAME,
1365 VIEW_BRANCH,
1366 VIEW_HELP,
1367 VIEW_PAGER,
1368 VIEW_STATUS,
1369 VIEW_STAGE,
1370 };
1372 struct view {
1373 enum view_type type; /* View type */
1374 const char *name; /* View name */
1375 const char *id; /* Points to either of ref_{head,commit,blob} */
1377 struct view_ops *ops; /* View operations */
1379 enum keymap keymap; /* What keymap does this view have */
1380 bool git_dir; /* Whether the view requires a git directory. */
1382 char ref[SIZEOF_REF]; /* Hovered commit reference */
1383 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1385 int height, width; /* The width and height of the main window */
1386 WINDOW *win; /* The main window */
1388 /* Navigation */
1389 unsigned long offset; /* Offset of the window top */
1390 unsigned long yoffset; /* Offset from the window side. */
1391 unsigned long lineno; /* Current line number */
1392 unsigned long p_offset; /* Previous offset of the window top */
1393 unsigned long p_yoffset;/* Previous offset from the window side */
1394 unsigned long p_lineno; /* Previous current line number */
1395 bool p_restore; /* Should the previous position be restored. */
1397 /* Searching */
1398 char grep[SIZEOF_STR]; /* Search string */
1399 regex_t *regex; /* Pre-compiled regexp */
1401 /* If non-NULL, points to the view that opened this view. If this view
1402 * is closed tig will switch back to the parent view. */
1403 struct view *parent;
1404 struct view *prev;
1406 /* Buffering */
1407 size_t lines; /* Total number of lines */
1408 struct line *line; /* Line index */
1409 unsigned int digits; /* Number of digits in the lines member. */
1411 /* Drawing */
1412 struct line *curline; /* Line currently being drawn. */
1413 enum line_type curtype; /* Attribute currently used for drawing. */
1414 unsigned long col; /* Column when drawing. */
1415 bool has_scrolled; /* View was scrolled. */
1417 /* Loading */
1418 const char **argv; /* Shell command arguments. */
1419 const char *dir; /* Directory from which to execute. */
1420 struct io io;
1421 struct io *pipe;
1422 time_t start_time;
1423 time_t update_secs;
1424 };
1426 enum open_flags {
1427 OPEN_DEFAULT = 0, /* Use default view switching. */
1428 OPEN_SPLIT = 1, /* Split current view. */
1429 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1430 OPEN_REFRESH = 16, /* Refresh view using previous command. */
1431 OPEN_PREPARED = 32, /* Open already prepared command. */
1432 OPEN_EXTRA = 64, /* Open extra data from command. */
1433 };
1435 struct view_ops {
1436 /* What type of content being displayed. Used in the title bar. */
1437 const char *type;
1438 /* Open and reads in all view content. */
1439 bool (*open)(struct view *view, enum open_flags flags);
1440 /* Read one line; updates view->line. */
1441 bool (*read)(struct view *view, char *data);
1442 /* Draw one line; @lineno must be < view->height. */
1443 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1444 /* Depending on view handle a special requests. */
1445 enum request (*request)(struct view *view, enum request request, struct line *line);
1446 /* Search for regexp in a line. */
1447 bool (*grep)(struct view *view, struct line *line);
1448 /* Select line */
1449 void (*select)(struct view *view, struct line *line);
1450 };
1452 static struct view_ops blame_ops;
1453 static struct view_ops blob_ops;
1454 static struct view_ops diff_ops;
1455 static struct view_ops help_ops;
1456 static struct view_ops log_ops;
1457 static struct view_ops main_ops;
1458 static struct view_ops pager_ops;
1459 static struct view_ops stage_ops;
1460 static struct view_ops status_ops;
1461 static struct view_ops tree_ops;
1462 static struct view_ops branch_ops;
1464 #define VIEW_STR(type, name, ref, ops, map, git) \
1465 { type, name, ref, ops, map, git }
1467 #define VIEW_(id, name, ops, git, ref) \
1468 VIEW_STR(VIEW_##id, name, ref, ops, KEYMAP_##id, git)
1470 static struct view views[] = {
1471 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1472 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1473 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1474 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1475 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1476 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1477 VIEW_(BRANCH, "branch", &branch_ops, TRUE, ref_head),
1478 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1479 VIEW_(PAGER, "pager", &pager_ops, FALSE, ""),
1480 VIEW_(STATUS, "status", &status_ops, TRUE, "status"),
1481 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1482 };
1484 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1486 #define foreach_view(view, i) \
1487 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1489 #define view_is_displayed(view) \
1490 (view == display[0] || view == display[1])
1492 static enum request
1493 view_request(struct view *view, enum request request)
1494 {
1495 if (!view || !view->lines)
1496 return request;
1497 return view->ops->request(view, request, &view->line[view->lineno]);
1498 }
1501 /*
1502 * View drawing.
1503 */
1505 static inline void
1506 set_view_attr(struct view *view, enum line_type type)
1507 {
1508 if (!view->curline->selected && view->curtype != type) {
1509 (void) wattrset(view->win, get_line_attr(type));
1510 wchgat(view->win, -1, 0, type, NULL);
1511 view->curtype = type;
1512 }
1513 }
1515 #define VIEW_MAX_LEN(view) ((view)->width + (view)->yoffset - (view)->col)
1517 static bool
1518 draw_chars(struct view *view, enum line_type type, const char *string,
1519 int max_len, bool use_tilde)
1520 {
1521 static char out_buffer[BUFSIZ * 2];
1522 int len = 0;
1523 int col = 0;
1524 int trimmed = FALSE;
1525 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1527 if (max_len <= 0)
1528 return VIEW_MAX_LEN(view) <= 0;
1530 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1532 set_view_attr(view, type);
1533 if (len > 0) {
1534 if (opt_iconv_out != ICONV_NONE) {
1535 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
1536 size_t inlen = len + 1;
1538 char *outbuf = out_buffer;
1539 size_t outlen = sizeof(out_buffer);
1541 size_t ret;
1543 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1544 if (ret != (size_t) -1) {
1545 string = out_buffer;
1546 len = sizeof(out_buffer) - outlen;
1547 }
1548 }
1550 waddnstr(view->win, string, len);
1552 if (trimmed && use_tilde) {
1553 set_view_attr(view, LINE_DELIMITER);
1554 waddch(view->win, '~');
1555 col++;
1556 }
1557 }
1559 view->col += col;
1560 return VIEW_MAX_LEN(view) <= 0;
1561 }
1563 static bool
1564 draw_space(struct view *view, enum line_type type, int max, int spaces)
1565 {
1566 static char space[] = " ";
1568 spaces = MIN(max, spaces);
1570 while (spaces > 0) {
1571 int len = MIN(spaces, sizeof(space) - 1);
1573 if (draw_chars(view, type, space, len, FALSE))
1574 return TRUE;
1575 spaces -= len;
1576 }
1578 return VIEW_MAX_LEN(view) <= 0;
1579 }
1581 static bool
1582 draw_text(struct view *view, enum line_type type, const char *string)
1583 {
1584 char text[SIZEOF_STR];
1586 do {
1587 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1589 if (draw_chars(view, type, text, VIEW_MAX_LEN(view), TRUE))
1590 return TRUE;
1591 string += pos;
1592 } while (*string);
1594 return VIEW_MAX_LEN(view) <= 0;
1595 }
1597 static bool
1598 draw_graphic(struct view *view, enum line_type type, const chtype graphic[], size_t size, bool separator)
1599 {
1600 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1601 int max = VIEW_MAX_LEN(view);
1602 int i;
1604 if (max < size)
1605 size = max;
1607 set_view_attr(view, type);
1608 /* Using waddch() instead of waddnstr() ensures that
1609 * they'll be rendered correctly for the cursor line. */
1610 for (i = skip; i < size; i++)
1611 waddch(view->win, graphic[i]);
1613 view->col += size;
1614 if (separator) {
1615 if (size < max && skip <= size)
1616 waddch(view->win, ' ');
1617 view->col++;
1618 }
1620 return VIEW_MAX_LEN(view) <= 0;
1621 }
1623 static bool
1624 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1625 {
1626 int max = MIN(VIEW_MAX_LEN(view), len);
1627 int col = view->col;
1629 if (!text)
1630 return draw_space(view, type, max, max);
1632 return draw_chars(view, type, text, max - 1, trim)
1633 || draw_space(view, LINE_DEFAULT, max - (view->col - col), max);
1634 }
1636 static bool
1637 draw_date(struct view *view, struct time *time)
1638 {
1639 const char *date = mkdate(time, opt_date);
1640 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
1642 if (opt_date == DATE_NO)
1643 return FALSE;
1645 return draw_field(view, LINE_DATE, date, cols, FALSE);
1646 }
1648 static bool
1649 draw_author(struct view *view, const char *author)
1650 {
1651 bool trim = author_trim(opt_author_cols);
1652 const char *text = mkauthor(author, opt_author_cols, opt_author);
1654 if (opt_author == AUTHOR_NO)
1655 return FALSE;
1657 return draw_field(view, LINE_AUTHOR, text, opt_author_cols, trim);
1658 }
1660 static bool
1661 draw_mode(struct view *view, mode_t mode)
1662 {
1663 const char *str = mkmode(mode);
1665 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
1666 }
1668 static bool
1669 draw_lineno(struct view *view, unsigned int lineno)
1670 {
1671 char number[10];
1672 int digits3 = view->digits < 3 ? 3 : view->digits;
1673 int max = MIN(VIEW_MAX_LEN(view), digits3);
1674 char *text = NULL;
1675 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
1677 lineno += view->offset + 1;
1678 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1679 static char fmt[] = "%1ld";
1681 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
1682 if (string_format(number, fmt, lineno))
1683 text = number;
1684 }
1685 if (text)
1686 draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
1687 else
1688 draw_space(view, LINE_LINE_NUMBER, max, digits3);
1689 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
1690 }
1692 static bool
1693 draw_refs(struct view *view, struct ref_list *refs)
1694 {
1695 size_t i;
1697 if (!opt_show_refs || !refs)
1698 return FALSE;
1700 for (i = 0; i < refs->size; i++) {
1701 struct ref *ref = refs->refs[i];
1702 enum line_type type;
1704 if (ref->head)
1705 type = LINE_MAIN_HEAD;
1706 else if (ref->ltag)
1707 type = LINE_MAIN_LOCAL_TAG;
1708 else if (ref->tag)
1709 type = LINE_MAIN_TAG;
1710 else if (ref->tracked)
1711 type = LINE_MAIN_TRACKED;
1712 else if (ref->remote)
1713 type = LINE_MAIN_REMOTE;
1714 else
1715 type = LINE_MAIN_REF;
1717 if (draw_text(view, type, "[") ||
1718 draw_text(view, type, ref->name) ||
1719 draw_text(view, type, "]"))
1720 return TRUE;
1722 if (draw_text(view, LINE_DEFAULT, " "))
1723 return TRUE;
1724 }
1726 return FALSE;
1727 }
1729 static bool
1730 draw_view_line(struct view *view, unsigned int lineno)
1731 {
1732 struct line *line;
1733 bool selected = (view->offset + lineno == view->lineno);
1735 assert(view_is_displayed(view));
1737 if (view->offset + lineno >= view->lines)
1738 return FALSE;
1740 line = &view->line[view->offset + lineno];
1742 wmove(view->win, lineno, 0);
1743 if (line->cleareol)
1744 wclrtoeol(view->win);
1745 view->col = 0;
1746 view->curline = line;
1747 view->curtype = LINE_NONE;
1748 line->selected = FALSE;
1749 line->dirty = line->cleareol = 0;
1751 if (selected) {
1752 set_view_attr(view, LINE_CURSOR);
1753 line->selected = TRUE;
1754 view->ops->select(view, line);
1755 }
1757 return view->ops->draw(view, line, lineno);
1758 }
1760 static void
1761 redraw_view_dirty(struct view *view)
1762 {
1763 bool dirty = FALSE;
1764 int lineno;
1766 for (lineno = 0; lineno < view->height; lineno++) {
1767 if (view->offset + lineno >= view->lines)
1768 break;
1769 if (!view->line[view->offset + lineno].dirty)
1770 continue;
1771 dirty = TRUE;
1772 if (!draw_view_line(view, lineno))
1773 break;
1774 }
1776 if (!dirty)
1777 return;
1778 wnoutrefresh(view->win);
1779 }
1781 static void
1782 redraw_view_from(struct view *view, int lineno)
1783 {
1784 assert(0 <= lineno && lineno < view->height);
1786 for (; lineno < view->height; lineno++) {
1787 if (!draw_view_line(view, lineno))
1788 break;
1789 }
1791 wnoutrefresh(view->win);
1792 }
1794 static void
1795 redraw_view(struct view *view)
1796 {
1797 werase(view->win);
1798 redraw_view_from(view, 0);
1799 }
1802 static void
1803 update_view_title(struct view *view)
1804 {
1805 char buf[SIZEOF_STR];
1806 char state[SIZEOF_STR];
1807 size_t bufpos = 0, statelen = 0;
1808 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
1810 assert(view_is_displayed(view));
1812 if (view->type != VIEW_STATUS && view->lines) {
1813 unsigned int view_lines = view->offset + view->height;
1814 unsigned int lines = view->lines
1815 ? MIN(view_lines, view->lines) * 100 / view->lines
1816 : 0;
1818 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
1819 view->ops->type,
1820 view->lineno + 1,
1821 view->lines,
1822 lines);
1824 }
1826 if (view->pipe) {
1827 time_t secs = time(NULL) - view->start_time;
1829 /* Three git seconds are a long time ... */
1830 if (secs > 2)
1831 string_format_from(state, &statelen, " loading %lds", secs);
1832 }
1834 string_format_from(buf, &bufpos, "[%s]", view->name);
1835 if (*view->ref && bufpos < view->width) {
1836 size_t refsize = strlen(view->ref);
1837 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1839 if (minsize < view->width)
1840 refsize = view->width - minsize + 7;
1841 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1842 }
1844 if (statelen && bufpos < view->width) {
1845 string_format_from(buf, &bufpos, "%s", state);
1846 }
1848 if (view == display[current_view])
1849 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
1850 else
1851 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
1853 mvwaddnstr(window, 0, 0, buf, bufpos);
1854 wclrtoeol(window);
1855 wnoutrefresh(window);
1856 }
1858 static int
1859 apply_step(double step, int value)
1860 {
1861 if (step >= 1)
1862 return (int) step;
1863 value *= step + 0.01;
1864 return value ? value : 1;
1865 }
1867 static void
1868 resize_display(void)
1869 {
1870 int offset, i;
1871 struct view *base = display[0];
1872 struct view *view = display[1] ? display[1] : display[0];
1874 /* Setup window dimensions */
1876 getmaxyx(stdscr, base->height, base->width);
1878 /* Make room for the status window. */
1879 base->height -= 1;
1881 if (view != base) {
1882 /* Horizontal split. */
1883 view->width = base->width;
1884 view->height = apply_step(opt_scale_split_view, base->height);
1885 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
1886 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
1887 base->height -= view->height;
1889 /* Make room for the title bar. */
1890 view->height -= 1;
1891 }
1893 /* Make room for the title bar. */
1894 base->height -= 1;
1896 offset = 0;
1898 foreach_displayed_view (view, i) {
1899 if (!display_win[i]) {
1900 display_win[i] = newwin(view->height, view->width, offset, 0);
1901 if (!display_win[i])
1902 die("Failed to create %s view", view->name);
1904 scrollok(display_win[i], FALSE);
1906 display_title[i] = newwin(1, view->width, offset + view->height, 0);
1907 if (!display_title[i])
1908 die("Failed to create title window");
1910 } else {
1911 wresize(display_win[i], view->height, view->width);
1912 mvwin(display_win[i], offset, 0);
1913 mvwin(display_title[i], offset + view->height, 0);
1914 }
1916 view->win = display_win[i];
1918 offset += view->height + 1;
1919 }
1920 }
1922 static void
1923 redraw_display(bool clear)
1924 {
1925 struct view *view;
1926 int i;
1928 foreach_displayed_view (view, i) {
1929 if (clear)
1930 wclear(view->win);
1931 redraw_view(view);
1932 update_view_title(view);
1933 }
1934 }
1937 /*
1938 * Option management
1939 */
1941 #define TOGGLE_MENU \
1942 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
1943 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
1944 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
1945 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
1946 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
1947 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
1949 static void
1950 toggle_option(enum request request)
1951 {
1952 const struct {
1953 enum request request;
1954 const struct enum_map *map;
1955 size_t map_size;
1956 } data[] = {
1957 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
1958 TOGGLE_MENU
1959 #undef TOGGLE_
1960 };
1961 const struct menu_item menu[] = {
1962 #define TOGGLE_(id, key, help, value, map) { key, help, value },
1963 TOGGLE_MENU
1964 #undef TOGGLE_
1965 { 0 }
1966 };
1967 int i = 0;
1969 if (request == REQ_OPTIONS) {
1970 if (!prompt_menu("Toggle option", menu, &i))
1971 return;
1972 } else {
1973 while (i < ARRAY_SIZE(data) && data[i].request != request)
1974 i++;
1975 if (i >= ARRAY_SIZE(data))
1976 die("Invalid request (%d)", request);
1977 }
1979 if (data[i].map != NULL) {
1980 unsigned int *opt = menu[i].data;
1982 *opt = (*opt + 1) % data[i].map_size;
1983 redraw_display(FALSE);
1984 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
1986 } else {
1987 bool *option = menu[i].data;
1989 *option = !*option;
1990 redraw_display(FALSE);
1991 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
1992 }
1993 }
1995 static void
1996 maximize_view(struct view *view, bool redraw)
1997 {
1998 memset(display, 0, sizeof(display));
1999 current_view = 0;
2000 display[current_view] = view;
2001 resize_display();
2002 if (redraw) {
2003 redraw_display(FALSE);
2004 report("");
2005 }
2006 }
2009 /*
2010 * Navigation
2011 */
2013 static bool
2014 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2015 {
2016 if (lineno >= view->lines)
2017 lineno = view->lines > 0 ? view->lines - 1 : 0;
2019 if (offset > lineno || offset + view->height <= lineno) {
2020 unsigned long half = view->height / 2;
2022 if (lineno > half)
2023 offset = lineno - half;
2024 else
2025 offset = 0;
2026 }
2028 if (offset != view->offset || lineno != view->lineno) {
2029 view->offset = offset;
2030 view->lineno = lineno;
2031 return TRUE;
2032 }
2034 return FALSE;
2035 }
2037 /* Scrolling backend */
2038 static void
2039 do_scroll_view(struct view *view, int lines)
2040 {
2041 bool redraw_current_line = FALSE;
2043 /* The rendering expects the new offset. */
2044 view->offset += lines;
2046 assert(0 <= view->offset && view->offset < view->lines);
2047 assert(lines);
2049 /* Move current line into the view. */
2050 if (view->lineno < view->offset) {
2051 view->lineno = view->offset;
2052 redraw_current_line = TRUE;
2053 } else if (view->lineno >= view->offset + view->height) {
2054 view->lineno = view->offset + view->height - 1;
2055 redraw_current_line = TRUE;
2056 }
2058 assert(view->offset <= view->lineno && view->lineno < view->lines);
2060 /* Redraw the whole screen if scrolling is pointless. */
2061 if (view->height < ABS(lines)) {
2062 redraw_view(view);
2064 } else {
2065 int line = lines > 0 ? view->height - lines : 0;
2066 int end = line + ABS(lines);
2068 scrollok(view->win, TRUE);
2069 wscrl(view->win, lines);
2070 scrollok(view->win, FALSE);
2072 while (line < end && draw_view_line(view, line))
2073 line++;
2075 if (redraw_current_line)
2076 draw_view_line(view, view->lineno - view->offset);
2077 wnoutrefresh(view->win);
2078 }
2080 view->has_scrolled = TRUE;
2081 report("");
2082 }
2084 /* Scroll frontend */
2085 static void
2086 scroll_view(struct view *view, enum request request)
2087 {
2088 int lines = 1;
2090 assert(view_is_displayed(view));
2092 switch (request) {
2093 case REQ_SCROLL_FIRST_COL:
2094 view->yoffset = 0;
2095 redraw_view_from(view, 0);
2096 report("");
2097 return;
2098 case REQ_SCROLL_LEFT:
2099 if (view->yoffset == 0) {
2100 report("Cannot scroll beyond the first column");
2101 return;
2102 }
2103 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2104 view->yoffset = 0;
2105 else
2106 view->yoffset -= apply_step(opt_hscroll, view->width);
2107 redraw_view_from(view, 0);
2108 report("");
2109 return;
2110 case REQ_SCROLL_RIGHT:
2111 view->yoffset += apply_step(opt_hscroll, view->width);
2112 redraw_view(view);
2113 report("");
2114 return;
2115 case REQ_SCROLL_PAGE_DOWN:
2116 lines = view->height;
2117 case REQ_SCROLL_LINE_DOWN:
2118 if (view->offset + lines > view->lines)
2119 lines = view->lines - view->offset;
2121 if (lines == 0 || view->offset + view->height >= view->lines) {
2122 report("Cannot scroll beyond the last line");
2123 return;
2124 }
2125 break;
2127 case REQ_SCROLL_PAGE_UP:
2128 lines = view->height;
2129 case REQ_SCROLL_LINE_UP:
2130 if (lines > view->offset)
2131 lines = view->offset;
2133 if (lines == 0) {
2134 report("Cannot scroll beyond the first line");
2135 return;
2136 }
2138 lines = -lines;
2139 break;
2141 default:
2142 die("request %d not handled in switch", request);
2143 }
2145 do_scroll_view(view, lines);
2146 }
2148 /* Cursor moving */
2149 static void
2150 move_view(struct view *view, enum request request)
2151 {
2152 int scroll_steps = 0;
2153 int steps;
2155 switch (request) {
2156 case REQ_MOVE_FIRST_LINE:
2157 steps = -view->lineno;
2158 break;
2160 case REQ_MOVE_LAST_LINE:
2161 steps = view->lines - view->lineno - 1;
2162 break;
2164 case REQ_MOVE_PAGE_UP:
2165 steps = view->height > view->lineno
2166 ? -view->lineno : -view->height;
2167 break;
2169 case REQ_MOVE_PAGE_DOWN:
2170 steps = view->lineno + view->height >= view->lines
2171 ? view->lines - view->lineno - 1 : view->height;
2172 break;
2174 case REQ_MOVE_UP:
2175 steps = -1;
2176 break;
2178 case REQ_MOVE_DOWN:
2179 steps = 1;
2180 break;
2182 default:
2183 die("request %d not handled in switch", request);
2184 }
2186 if (steps <= 0 && view->lineno == 0) {
2187 report("Cannot move beyond the first line");
2188 return;
2190 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2191 report("Cannot move beyond the last line");
2192 return;
2193 }
2195 /* Move the current line */
2196 view->lineno += steps;
2197 assert(0 <= view->lineno && view->lineno < view->lines);
2199 /* Check whether the view needs to be scrolled */
2200 if (view->lineno < view->offset ||
2201 view->lineno >= view->offset + view->height) {
2202 scroll_steps = steps;
2203 if (steps < 0 && -steps > view->offset) {
2204 scroll_steps = -view->offset;
2206 } else if (steps > 0) {
2207 if (view->lineno == view->lines - 1 &&
2208 view->lines > view->height) {
2209 scroll_steps = view->lines - view->offset - 1;
2210 if (scroll_steps >= view->height)
2211 scroll_steps -= view->height - 1;
2212 }
2213 }
2214 }
2216 if (!view_is_displayed(view)) {
2217 view->offset += scroll_steps;
2218 assert(0 <= view->offset && view->offset < view->lines);
2219 view->ops->select(view, &view->line[view->lineno]);
2220 return;
2221 }
2223 /* Repaint the old "current" line if we be scrolling */
2224 if (ABS(steps) < view->height)
2225 draw_view_line(view, view->lineno - steps - view->offset);
2227 if (scroll_steps) {
2228 do_scroll_view(view, scroll_steps);
2229 return;
2230 }
2232 /* Draw the current line */
2233 draw_view_line(view, view->lineno - view->offset);
2235 wnoutrefresh(view->win);
2236 report("");
2237 }
2240 /*
2241 * Searching
2242 */
2244 static void search_view(struct view *view, enum request request);
2246 static bool
2247 grep_text(struct view *view, const char *text[])
2248 {
2249 regmatch_t pmatch;
2250 size_t i;
2252 for (i = 0; text[i]; i++)
2253 if (*text[i] &&
2254 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2255 return TRUE;
2256 return FALSE;
2257 }
2259 static void
2260 select_view_line(struct view *view, unsigned long lineno)
2261 {
2262 unsigned long old_lineno = view->lineno;
2263 unsigned long old_offset = view->offset;
2265 if (goto_view_line(view, view->offset, lineno)) {
2266 if (view_is_displayed(view)) {
2267 if (old_offset != view->offset) {
2268 redraw_view(view);
2269 } else {
2270 draw_view_line(view, old_lineno - view->offset);
2271 draw_view_line(view, view->lineno - view->offset);
2272 wnoutrefresh(view->win);
2273 }
2274 } else {
2275 view->ops->select(view, &view->line[view->lineno]);
2276 }
2277 }
2278 }
2280 static void
2281 find_next(struct view *view, enum request request)
2282 {
2283 unsigned long lineno = view->lineno;
2284 int direction;
2286 if (!*view->grep) {
2287 if (!*opt_search)
2288 report("No previous search");
2289 else
2290 search_view(view, request);
2291 return;
2292 }
2294 switch (request) {
2295 case REQ_SEARCH:
2296 case REQ_FIND_NEXT:
2297 direction = 1;
2298 break;
2300 case REQ_SEARCH_BACK:
2301 case REQ_FIND_PREV:
2302 direction = -1;
2303 break;
2305 default:
2306 return;
2307 }
2309 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2310 lineno += direction;
2312 /* Note, lineno is unsigned long so will wrap around in which case it
2313 * will become bigger than view->lines. */
2314 for (; lineno < view->lines; lineno += direction) {
2315 if (view->ops->grep(view, &view->line[lineno])) {
2316 select_view_line(view, lineno);
2317 report("Line %ld matches '%s'", lineno + 1, view->grep);
2318 return;
2319 }
2320 }
2322 report("No match found for '%s'", view->grep);
2323 }
2325 static void
2326 search_view(struct view *view, enum request request)
2327 {
2328 int regex_err;
2330 if (view->regex) {
2331 regfree(view->regex);
2332 *view->grep = 0;
2333 } else {
2334 view->regex = calloc(1, sizeof(*view->regex));
2335 if (!view->regex)
2336 return;
2337 }
2339 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2340 if (regex_err != 0) {
2341 char buf[SIZEOF_STR] = "unknown error";
2343 regerror(regex_err, view->regex, buf, sizeof(buf));
2344 report("Search failed: %s", buf);
2345 return;
2346 }
2348 string_copy(view->grep, opt_search);
2350 find_next(view, request);
2351 }
2353 /*
2354 * Incremental updating
2355 */
2357 static void
2358 reset_view(struct view *view)
2359 {
2360 int i;
2362 for (i = 0; i < view->lines; i++)
2363 free(view->line[i].data);
2364 free(view->line);
2366 view->p_offset = view->offset;
2367 view->p_yoffset = view->yoffset;
2368 view->p_lineno = view->lineno;
2370 view->line = NULL;
2371 view->offset = 0;
2372 view->yoffset = 0;
2373 view->lines = 0;
2374 view->lineno = 0;
2375 view->vid[0] = 0;
2376 view->update_secs = 0;
2377 }
2379 static const char *
2380 format_arg(const char *name)
2381 {
2382 static struct {
2383 const char *name;
2384 size_t namelen;
2385 const char *value;
2386 const char *value_if_empty;
2387 } vars[] = {
2388 #define FORMAT_VAR(name, value, value_if_empty) \
2389 { name, STRING_SIZE(name), value, value_if_empty }
2390 FORMAT_VAR("%(directory)", opt_path, "."),
2391 FORMAT_VAR("%(file)", opt_file, ""),
2392 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2393 FORMAT_VAR("%(head)", ref_head, ""),
2394 FORMAT_VAR("%(commit)", ref_commit, ""),
2395 FORMAT_VAR("%(blob)", ref_blob, ""),
2396 FORMAT_VAR("%(branch)", ref_branch, ""),
2397 };
2398 int i;
2400 for (i = 0; i < ARRAY_SIZE(vars); i++)
2401 if (!strncmp(name, vars[i].name, vars[i].namelen))
2402 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2404 report("Unknown replacement: `%s`", name);
2405 return NULL;
2406 }
2408 static bool
2409 format_argv(const char ***dst_argv, const char *src_argv[], bool first)
2410 {
2411 char buf[SIZEOF_STR];
2412 int argc;
2414 argv_free(*dst_argv);
2416 for (argc = 0; src_argv[argc]; argc++) {
2417 const char *arg = src_argv[argc];
2418 size_t bufpos = 0;
2420 if (!strcmp(arg, "%(fileargs)")) {
2421 if (!argv_append_array(dst_argv, opt_file_argv))
2422 break;
2423 continue;
2425 } else if (!strcmp(arg, "%(diffargs)")) {
2426 if (!argv_append_array(dst_argv, opt_diff_argv))
2427 break;
2428 continue;
2430 } else if (!strcmp(arg, "%(blameargs)")) {
2431 if (!argv_append_array(dst_argv, opt_blame_argv))
2432 break;
2433 continue;
2435 } else if (!strcmp(arg, "%(revargs)") ||
2436 (first && !strcmp(arg, "%(commit)"))) {
2437 if (!argv_append_array(dst_argv, opt_rev_argv))
2438 break;
2439 continue;
2440 }
2442 while (arg) {
2443 char *next = strstr(arg, "%(");
2444 int len = next - arg;
2445 const char *value;
2447 if (!next) {
2448 len = strlen(arg);
2449 value = "";
2451 } else {
2452 value = format_arg(next);
2454 if (!value) {
2455 return FALSE;
2456 }
2457 }
2459 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2460 return FALSE;
2462 arg = next ? strchr(next, ')') + 1 : NULL;
2463 }
2465 if (!argv_append(dst_argv, buf))
2466 break;
2467 }
2469 return src_argv[argc] == NULL;
2470 }
2472 static bool
2473 restore_view_position(struct view *view)
2474 {
2475 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2476 return FALSE;
2478 /* Changing the view position cancels the restoring. */
2479 /* FIXME: Changing back to the first line is not detected. */
2480 if (view->offset != 0 || view->lineno != 0) {
2481 view->p_restore = FALSE;
2482 return FALSE;
2483 }
2485 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2486 view_is_displayed(view))
2487 werase(view->win);
2489 view->yoffset = view->p_yoffset;
2490 view->p_restore = FALSE;
2492 return TRUE;
2493 }
2495 static void
2496 end_update(struct view *view, bool force)
2497 {
2498 if (!view->pipe)
2499 return;
2500 while (!view->ops->read(view, NULL))
2501 if (!force)
2502 return;
2503 if (force)
2504 io_kill(view->pipe);
2505 io_done(view->pipe);
2506 view->pipe = NULL;
2507 }
2509 static void
2510 setup_update(struct view *view, const char *vid)
2511 {
2512 reset_view(view);
2513 string_copy_rev(view->vid, vid);
2514 view->pipe = &view->io;
2515 view->start_time = time(NULL);
2516 }
2518 static bool
2519 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
2520 {
2521 bool extra = !!(flags & (OPEN_EXTRA));
2522 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED | OPEN_EXTRA));
2523 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2525 if (!reload && !strcmp(view->vid, view->id))
2526 return TRUE;
2528 if (view->pipe) {
2529 if (extra)
2530 io_done(view->pipe);
2531 else
2532 end_update(view, TRUE);
2533 }
2535 if (!refresh) {
2536 view->dir = dir;
2537 if (!format_argv(&view->argv, argv, !view->prev))
2538 return FALSE;
2540 /* Put the current ref_* value to the view title ref
2541 * member. This is needed by the blob view. Most other
2542 * views sets it automatically after loading because the
2543 * first line is a commit line. */
2544 string_copy_rev(view->ref, view->id);
2545 }
2547 if (view->argv && view->argv[0] &&
2548 !io_run(&view->io, IO_RD, view->dir, view->argv))
2549 return FALSE;
2551 if (!extra)
2552 setup_update(view, view->id);
2554 return TRUE;
2555 }
2557 static bool
2558 view_open(struct view *view, enum open_flags flags)
2559 {
2560 return begin_update(view, NULL, NULL, flags);
2561 }
2563 static bool
2564 update_view(struct view *view)
2565 {
2566 char out_buffer[BUFSIZ * 2];
2567 char *line;
2568 /* Clear the view and redraw everything since the tree sorting
2569 * might have rearranged things. */
2570 bool redraw = view->lines == 0;
2571 bool can_read = TRUE;
2573 if (!view->pipe)
2574 return TRUE;
2576 if (!io_can_read(view->pipe, FALSE)) {
2577 if (view->lines == 0 && view_is_displayed(view)) {
2578 time_t secs = time(NULL) - view->start_time;
2580 if (secs > 1 && secs > view->update_secs) {
2581 if (view->update_secs == 0)
2582 redraw_view(view);
2583 update_view_title(view);
2584 view->update_secs = secs;
2585 }
2586 }
2587 return TRUE;
2588 }
2590 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2591 if (opt_iconv_in != ICONV_NONE) {
2592 ICONV_CONST char *inbuf = line;
2593 size_t inlen = strlen(line) + 1;
2595 char *outbuf = out_buffer;
2596 size_t outlen = sizeof(out_buffer);
2598 size_t ret;
2600 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2601 if (ret != (size_t) -1)
2602 line = out_buffer;
2603 }
2605 if (!view->ops->read(view, line)) {
2606 report("Allocation failure");
2607 end_update(view, TRUE);
2608 return FALSE;
2609 }
2610 }
2612 {
2613 unsigned long lines = view->lines;
2614 int digits;
2616 for (digits = 0; lines; digits++)
2617 lines /= 10;
2619 /* Keep the displayed view in sync with line number scaling. */
2620 if (digits != view->digits) {
2621 view->digits = digits;
2622 if (opt_line_number || view->type == VIEW_BLAME)
2623 redraw = TRUE;
2624 }
2625 }
2627 if (io_error(view->pipe)) {
2628 report("Failed to read: %s", io_strerror(view->pipe));
2629 end_update(view, TRUE);
2631 } else if (io_eof(view->pipe)) {
2632 if (view_is_displayed(view))
2633 report("");
2634 end_update(view, FALSE);
2635 }
2637 if (restore_view_position(view))
2638 redraw = TRUE;
2640 if (!view_is_displayed(view))
2641 return TRUE;
2643 if (redraw)
2644 redraw_view_from(view, 0);
2645 else
2646 redraw_view_dirty(view);
2648 /* Update the title _after_ the redraw so that if the redraw picks up a
2649 * commit reference in view->ref it'll be available here. */
2650 update_view_title(view);
2651 return TRUE;
2652 }
2654 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2656 static struct line *
2657 add_line_data(struct view *view, void *data, enum line_type type)
2658 {
2659 struct line *line;
2661 if (!realloc_lines(&view->line, view->lines, 1))
2662 return NULL;
2664 line = &view->line[view->lines++];
2665 memset(line, 0, sizeof(*line));
2666 line->type = type;
2667 line->data = data;
2668 line->dirty = 1;
2670 return line;
2671 }
2673 static struct line *
2674 add_line_text(struct view *view, const char *text, enum line_type type)
2675 {
2676 char *data = text ? strdup(text) : NULL;
2678 return data ? add_line_data(view, data, type) : NULL;
2679 }
2681 static struct line *
2682 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2683 {
2684 char buf[SIZEOF_STR];
2685 va_list args;
2687 va_start(args, fmt);
2688 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2689 buf[0] = 0;
2690 va_end(args);
2692 return buf[0] ? add_line_text(view, buf, type) : NULL;
2693 }
2695 /*
2696 * View opening
2697 */
2699 static void
2700 load_view(struct view *view, enum open_flags flags)
2701 {
2702 if (view->pipe)
2703 end_update(view, TRUE);
2704 if (!view->ops->open(view, flags)) {
2705 report("Failed to load %s view", view->name);
2706 return;
2707 }
2708 restore_view_position(view);
2710 if (view->pipe && view->lines == 0) {
2711 /* Clear the old view and let the incremental updating refill
2712 * the screen. */
2713 werase(view->win);
2714 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2715 report("");
2716 } else if (view_is_displayed(view)) {
2717 redraw_view(view);
2718 report("");
2719 }
2720 }
2722 #define refresh_view(view) load_view(view, OPEN_REFRESH)
2723 #define reload_view(view) load_view(view, OPEN_RELOAD)
2725 static void
2726 split_view(struct view *prev, struct view *view)
2727 {
2728 display[1] = view;
2729 current_view = 1;
2730 view->parent = prev;
2731 resize_display();
2733 if (prev->lineno - prev->offset >= prev->height) {
2734 /* Take the title line into account. */
2735 int lines = prev->lineno - prev->offset - prev->height + 1;
2737 /* Scroll the view that was split if the current line is
2738 * outside the new limited view. */
2739 do_scroll_view(prev, lines);
2740 }
2742 if (view != prev && view_is_displayed(prev)) {
2743 /* "Blur" the previous view. */
2744 update_view_title(prev);
2745 }
2746 }
2748 static void
2749 open_view(struct view *prev, enum request request, enum open_flags flags)
2750 {
2751 bool split = !!(flags & OPEN_SPLIT);
2752 bool reload = !!(flags & (OPEN_RELOAD | OPEN_PREPARED));
2753 struct view *view = VIEW(request);
2754 int nviews = displayed_views();
2756 assert(flags ^ OPEN_REFRESH);
2758 if (view == prev && nviews == 1 && !reload) {
2759 report("Already in %s view", view->name);
2760 return;
2761 }
2763 if (view->git_dir && !opt_git_dir[0]) {
2764 report("The %s view is disabled in pager view", view->name);
2765 return;
2766 }
2768 if (split) {
2769 split_view(prev, view);
2770 } else {
2771 maximize_view(view, FALSE);
2772 }
2774 /* No prev signals that this is the first loaded view. */
2775 if (prev && view != prev) {
2776 view->prev = prev;
2777 }
2779 load_view(view, flags);
2780 }
2782 static void
2783 open_argv(struct view *prev, struct view *view, const char *argv[], const char *dir, enum open_flags flags)
2784 {
2785 enum request request = view - views + REQ_OFFSET + 1;
2787 if (view->pipe)
2788 end_update(view, TRUE);
2789 view->dir = dir;
2791 if (!argv_copy(&view->argv, argv)) {
2792 report("Failed to open %s view: %s", view->name, io_strerror(&view->io));
2793 } else {
2794 open_view(prev, request, flags | OPEN_PREPARED);
2795 }
2796 }
2798 static void
2799 open_file(struct view *prev, struct view *view, const char *file, enum open_flags flags)
2800 {
2801 const char *file_argv[] = { opt_cdup, file , NULL };
2803 open_argv(prev, view, file_argv, opt_cdup, flags);
2804 }
2806 static void
2807 open_external_viewer(const char *argv[], const char *dir)
2808 {
2809 def_prog_mode(); /* save current tty modes */
2810 endwin(); /* restore original tty modes */
2811 io_run_fg(argv, dir);
2812 fprintf(stderr, "Press Enter to continue");
2813 getc(opt_tty);
2814 reset_prog_mode();
2815 redraw_display(TRUE);
2816 }
2818 static void
2819 open_mergetool(const char *file)
2820 {
2821 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2823 open_external_viewer(mergetool_argv, opt_cdup);
2824 }
2826 static void
2827 open_editor(const char *file)
2828 {
2829 const char *editor_argv[] = { "vi", file, NULL };
2830 const char *editor;
2832 editor = getenv("GIT_EDITOR");
2833 if (!editor && *opt_editor)
2834 editor = opt_editor;
2835 if (!editor)
2836 editor = getenv("VISUAL");
2837 if (!editor)
2838 editor = getenv("EDITOR");
2839 if (!editor)
2840 editor = "vi";
2842 editor_argv[0] = editor;
2843 open_external_viewer(editor_argv, opt_cdup);
2844 }
2846 static void
2847 open_run_request(enum request request)
2848 {
2849 struct run_request *req = get_run_request(request);
2850 const char **argv = NULL;
2852 if (!req) {
2853 report("Unknown run request");
2854 return;
2855 }
2857 if (format_argv(&argv, req->argv, FALSE))
2858 open_external_viewer(argv, NULL);
2859 if (argv)
2860 argv_free(argv);
2861 free(argv);
2862 }
2864 /*
2865 * User request switch noodle
2866 */
2868 static int
2869 view_driver(struct view *view, enum request request)
2870 {
2871 int i;
2873 if (request == REQ_NONE)
2874 return TRUE;
2876 if (request > REQ_NONE) {
2877 open_run_request(request);
2878 view_request(view, REQ_REFRESH);
2879 return TRUE;
2880 }
2882 request = view_request(view, request);
2883 if (request == REQ_NONE)
2884 return TRUE;
2886 switch (request) {
2887 case REQ_MOVE_UP:
2888 case REQ_MOVE_DOWN:
2889 case REQ_MOVE_PAGE_UP:
2890 case REQ_MOVE_PAGE_DOWN:
2891 case REQ_MOVE_FIRST_LINE:
2892 case REQ_MOVE_LAST_LINE:
2893 move_view(view, request);
2894 break;
2896 case REQ_SCROLL_FIRST_COL:
2897 case REQ_SCROLL_LEFT:
2898 case REQ_SCROLL_RIGHT:
2899 case REQ_SCROLL_LINE_DOWN:
2900 case REQ_SCROLL_LINE_UP:
2901 case REQ_SCROLL_PAGE_DOWN:
2902 case REQ_SCROLL_PAGE_UP:
2903 scroll_view(view, request);
2904 break;
2906 case REQ_VIEW_BLAME:
2907 if (!opt_file[0]) {
2908 report("No file chosen, press %s to open tree view",
2909 get_key(view->keymap, REQ_VIEW_TREE));
2910 break;
2911 }
2912 open_view(view, request, OPEN_DEFAULT);
2913 break;
2915 case REQ_VIEW_BLOB:
2916 if (!ref_blob[0]) {
2917 report("No file chosen, press %s to open tree view",
2918 get_key(view->keymap, REQ_VIEW_TREE));
2919 break;
2920 }
2921 open_view(view, request, OPEN_DEFAULT);
2922 break;
2924 case REQ_VIEW_PAGER:
2925 if (view == NULL) {
2926 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2927 die("Failed to open stdin");
2928 open_view(view, request, OPEN_PREPARED);
2929 break;
2930 }
2932 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2933 report("No pager content, press %s to run command from prompt",
2934 get_key(view->keymap, REQ_PROMPT));
2935 break;
2936 }
2937 open_view(view, request, OPEN_DEFAULT);
2938 break;
2940 case REQ_VIEW_STAGE:
2941 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2942 report("No stage content, press %s to open the status view and choose file",
2943 get_key(view->keymap, REQ_VIEW_STATUS));
2944 break;
2945 }
2946 open_view(view, request, OPEN_DEFAULT);
2947 break;
2949 case REQ_VIEW_STATUS:
2950 if (opt_is_inside_work_tree == FALSE) {
2951 report("The status view requires a working tree");
2952 break;
2953 }
2954 open_view(view, request, OPEN_DEFAULT);
2955 break;
2957 case REQ_VIEW_MAIN:
2958 case REQ_VIEW_DIFF:
2959 case REQ_VIEW_LOG:
2960 case REQ_VIEW_TREE:
2961 case REQ_VIEW_HELP:
2962 case REQ_VIEW_BRANCH:
2963 open_view(view, request, OPEN_DEFAULT);
2964 break;
2966 case REQ_NEXT:
2967 case REQ_PREVIOUS:
2968 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2970 if (view->parent) {
2971 int line;
2973 view = view->parent;
2974 line = view->lineno;
2975 move_view(view, request);
2976 if (view_is_displayed(view))
2977 update_view_title(view);
2978 if (line != view->lineno)
2979 view_request(view, REQ_ENTER);
2980 } else {
2981 move_view(view, request);
2982 }
2983 break;
2985 case REQ_VIEW_NEXT:
2986 {
2987 int nviews = displayed_views();
2988 int next_view = (current_view + 1) % nviews;
2990 if (next_view == current_view) {
2991 report("Only one view is displayed");
2992 break;
2993 }
2995 current_view = next_view;
2996 /* Blur out the title of the previous view. */
2997 update_view_title(view);
2998 report("");
2999 break;
3000 }
3001 case REQ_REFRESH:
3002 report("Refreshing is not yet supported for the %s view", view->name);
3003 break;
3005 case REQ_MAXIMIZE:
3006 if (displayed_views() == 2)
3007 maximize_view(view, TRUE);
3008 break;
3010 case REQ_OPTIONS:
3011 case REQ_TOGGLE_LINENO:
3012 case REQ_TOGGLE_DATE:
3013 case REQ_TOGGLE_AUTHOR:
3014 case REQ_TOGGLE_GRAPHIC:
3015 case REQ_TOGGLE_REV_GRAPH:
3016 case REQ_TOGGLE_REFS:
3017 toggle_option(request);
3018 break;
3020 case REQ_TOGGLE_SORT_FIELD:
3021 case REQ_TOGGLE_SORT_ORDER:
3022 report("Sorting is not yet supported for the %s view", view->name);
3023 break;
3025 case REQ_SEARCH:
3026 case REQ_SEARCH_BACK:
3027 search_view(view, request);
3028 break;
3030 case REQ_FIND_NEXT:
3031 case REQ_FIND_PREV:
3032 find_next(view, request);
3033 break;
3035 case REQ_STOP_LOADING:
3036 foreach_view(view, i) {
3037 if (view->pipe)
3038 report("Stopped loading the %s view", view->name),
3039 end_update(view, TRUE);
3040 }
3041 break;
3043 case REQ_SHOW_VERSION:
3044 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3045 return TRUE;
3047 case REQ_SCREEN_REDRAW:
3048 redraw_display(TRUE);
3049 break;
3051 case REQ_EDIT:
3052 report("Nothing to edit");
3053 break;
3055 case REQ_ENTER:
3056 report("Nothing to enter");
3057 break;
3059 case REQ_VIEW_CLOSE:
3060 /* XXX: Mark closed views by letting view->prev point to the
3061 * view itself. Parents to closed view should never be
3062 * followed. */
3063 if (view->prev && view->prev != view) {
3064 maximize_view(view->prev, TRUE);
3065 view->prev = view;
3066 break;
3067 }
3068 /* Fall-through */
3069 case REQ_QUIT:
3070 return FALSE;
3072 default:
3073 report("Unknown key, press %s for help",
3074 get_key(view->keymap, REQ_VIEW_HELP));
3075 return TRUE;
3076 }
3078 return TRUE;
3079 }
3082 /*
3083 * View backend utilities
3084 */
3086 enum sort_field {
3087 ORDERBY_NAME,
3088 ORDERBY_DATE,
3089 ORDERBY_AUTHOR,
3090 };
3092 struct sort_state {
3093 const enum sort_field *fields;
3094 size_t size, current;
3095 bool reverse;
3096 };
3098 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3099 #define get_sort_field(state) ((state).fields[(state).current])
3100 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3102 static void
3103 sort_view(struct view *view, enum request request, struct sort_state *state,
3104 int (*compare)(const void *, const void *))
3105 {
3106 switch (request) {
3107 case REQ_TOGGLE_SORT_FIELD:
3108 state->current = (state->current + 1) % state->size;
3109 break;
3111 case REQ_TOGGLE_SORT_ORDER:
3112 state->reverse = !state->reverse;
3113 break;
3114 default:
3115 die("Not a sort request");
3116 }
3118 qsort(view->line, view->lines, sizeof(*view->line), compare);
3119 redraw_view(view);
3120 }
3122 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3124 /* Small author cache to reduce memory consumption. It uses binary
3125 * search to lookup or find place to position new entries. No entries
3126 * are ever freed. */
3127 static const char *
3128 get_author(const char *name)
3129 {
3130 static const char **authors;
3131 static size_t authors_size;
3132 int from = 0, to = authors_size - 1;
3134 while (from <= to) {
3135 size_t pos = (to + from) / 2;
3136 int cmp = strcmp(name, authors[pos]);
3138 if (!cmp)
3139 return authors[pos];
3141 if (cmp < 0)
3142 to = pos - 1;
3143 else
3144 from = pos + 1;
3145 }
3147 if (!realloc_authors(&authors, authors_size, 1))
3148 return NULL;
3149 name = strdup(name);
3150 if (!name)
3151 return NULL;
3153 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3154 authors[from] = name;
3155 authors_size++;
3157 return name;
3158 }
3160 static void
3161 parse_timesec(struct time *time, const char *sec)
3162 {
3163 time->sec = (time_t) atol(sec);
3164 }
3166 static void
3167 parse_timezone(struct time *time, const char *zone)
3168 {
3169 long tz;
3171 tz = ('0' - zone[1]) * 60 * 60 * 10;
3172 tz += ('0' - zone[2]) * 60 * 60;
3173 tz += ('0' - zone[3]) * 60 * 10;
3174 tz += ('0' - zone[4]) * 60;
3176 if (zone[0] == '-')
3177 tz = -tz;
3179 time->tz = tz;
3180 time->sec -= tz;
3181 }
3183 /* Parse author lines where the name may be empty:
3184 * author <email@address.tld> 1138474660 +0100
3185 */
3186 static void
3187 parse_author_line(char *ident, const char **author, struct time *time)
3188 {
3189 char *nameend = strchr(ident, '<');
3190 char *emailend = strchr(ident, '>');
3192 if (nameend && emailend)
3193 *nameend = *emailend = 0;
3194 ident = chomp_string(ident);
3195 if (!*ident) {
3196 if (nameend)
3197 ident = chomp_string(nameend + 1);
3198 if (!*ident)
3199 ident = "Unknown";
3200 }
3202 *author = get_author(ident);
3204 /* Parse epoch and timezone */
3205 if (emailend && emailend[1] == ' ') {
3206 char *secs = emailend + 2;
3207 char *zone = strchr(secs, ' ');
3209 parse_timesec(time, secs);
3211 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3212 parse_timezone(time, zone + 1);
3213 }
3214 }
3216 /*
3217 * Pager backend
3218 */
3220 static bool
3221 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3222 {
3223 if (opt_line_number && draw_lineno(view, lineno))
3224 return TRUE;
3226 draw_text(view, line->type, line->data);
3227 return TRUE;
3228 }
3230 static bool
3231 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3232 {
3233 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3234 char ref[SIZEOF_STR];
3236 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3237 return TRUE;
3239 /* This is the only fatal call, since it can "corrupt" the buffer. */
3240 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3241 return FALSE;
3243 return TRUE;
3244 }
3246 static void
3247 add_pager_refs(struct view *view, struct line *line)
3248 {
3249 char buf[SIZEOF_STR];
3250 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3251 struct ref_list *list;
3252 size_t bufpos = 0, i;
3253 const char *sep = "Refs: ";
3254 bool is_tag = FALSE;
3256 assert(line->type == LINE_COMMIT);
3258 list = get_ref_list(commit_id);
3259 if (!list) {
3260 if (view->type == VIEW_DIFF)
3261 goto try_add_describe_ref;
3262 return;
3263 }
3265 for (i = 0; i < list->size; i++) {
3266 struct ref *ref = list->refs[i];
3267 const char *fmt = ref->tag ? "%s[%s]" :
3268 ref->remote ? "%s<%s>" : "%s%s";
3270 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3271 return;
3272 sep = ", ";
3273 if (ref->tag)
3274 is_tag = TRUE;
3275 }
3277 if (!is_tag && view->type == VIEW_DIFF) {
3278 try_add_describe_ref:
3279 /* Add <tag>-g<commit_id> "fake" reference. */
3280 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3281 return;
3282 }
3284 if (bufpos == 0)
3285 return;
3287 add_line_text(view, buf, LINE_PP_REFS);
3288 }
3290 static bool
3291 pager_read(struct view *view, char *data)
3292 {
3293 struct line *line;
3295 if (!data)
3296 return TRUE;
3298 line = add_line_text(view, data, get_line_type(data));
3299 if (!line)
3300 return FALSE;
3302 if (line->type == LINE_COMMIT &&
3303 (view->type == VIEW_DIFF ||
3304 view->type == VIEW_LOG))
3305 add_pager_refs(view, line);
3307 return TRUE;
3308 }
3310 static enum request
3311 pager_request(struct view *view, enum request request, struct line *line)
3312 {
3313 int split = 0;
3315 if (request != REQ_ENTER)
3316 return request;
3318 if (line->type == LINE_COMMIT &&
3319 (view->type == VIEW_LOG ||
3320 view->type == VIEW_PAGER)) {
3321 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3322 split = 1;
3323 }
3325 /* Always scroll the view even if it was split. That way
3326 * you can use Enter to scroll through the log view and
3327 * split open each commit diff. */
3328 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3330 /* FIXME: A minor workaround. Scrolling the view will call report("")
3331 * but if we are scrolling a non-current view this won't properly
3332 * update the view title. */
3333 if (split)
3334 update_view_title(view);
3336 return REQ_NONE;
3337 }
3339 static bool
3340 pager_grep(struct view *view, struct line *line)
3341 {
3342 const char *text[] = { line->data, NULL };
3344 return grep_text(view, text);
3345 }
3347 static void
3348 pager_select(struct view *view, struct line *line)
3349 {
3350 if (line->type == LINE_COMMIT) {
3351 char *text = (char *)line->data + STRING_SIZE("commit ");
3353 if (view->type != VIEW_PAGER)
3354 string_copy_rev(view->ref, text);
3355 string_copy_rev(ref_commit, text);
3356 }
3357 }
3359 static struct view_ops pager_ops = {
3360 "line",
3361 view_open,
3362 pager_read,
3363 pager_draw,
3364 pager_request,
3365 pager_grep,
3366 pager_select,
3367 };
3369 static bool
3370 log_open(struct view *view, enum open_flags flags)
3371 {
3372 static const char *log_argv[] = {
3373 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3374 };
3376 return begin_update(view, NULL, log_argv, flags);
3377 }
3379 static enum request
3380 log_request(struct view *view, enum request request, struct line *line)
3381 {
3382 switch (request) {
3383 case REQ_REFRESH:
3384 load_refs();
3385 refresh_view(view);
3386 return REQ_NONE;
3387 default:
3388 return pager_request(view, request, line);
3389 }
3390 }
3392 static struct view_ops log_ops = {
3393 "line",
3394 log_open,
3395 pager_read,
3396 pager_draw,
3397 log_request,
3398 pager_grep,
3399 pager_select,
3400 };
3402 static bool
3403 diff_open(struct view *view, enum open_flags flags)
3404 {
3405 static const char *diff_argv[] = {
3406 "git", "show", "--pretty=fuller", "--no-color", "--root",
3407 "--patch-with-stat", "--find-copies-harder", "-C",
3408 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3409 };
3411 return begin_update(view, NULL, diff_argv, flags);
3412 }
3414 static bool
3415 diff_read(struct view *view, char *data)
3416 {
3417 if (!data) {
3418 /* Fall back to retry if no diff will be shown. */
3419 if (view->lines == 0 && opt_file_argv) {
3420 int pos = argv_size(view->argv)
3421 - argv_size(opt_file_argv) - 1;
3423 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3424 for (; view->argv[pos]; pos++) {
3425 free((void *) view->argv[pos]);
3426 view->argv[pos] = NULL;
3427 }
3429 if (view->pipe)
3430 io_done(view->pipe);
3431 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3432 return FALSE;
3433 }
3434 }
3435 return TRUE;
3436 }
3438 return pager_read(view, data);
3439 }
3441 static struct view_ops diff_ops = {
3442 "line",
3443 diff_open,
3444 diff_read,
3445 pager_draw,
3446 pager_request,
3447 pager_grep,
3448 pager_select,
3449 };
3451 /*
3452 * Help backend
3453 */
3455 static bool help_keymap_hidden[ARRAY_SIZE(keymap_map)];
3457 static bool
3458 help_open_keymap_title(struct view *view, enum keymap keymap)
3459 {
3460 struct line *line;
3462 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3463 help_keymap_hidden[keymap] ? '+' : '-',
3464 enum_name(keymap_map[keymap]));
3465 if (line)
3466 line->other = keymap;
3468 return help_keymap_hidden[keymap];
3469 }
3471 static void
3472 help_open_keymap(struct view *view, enum keymap keymap)
3473 {
3474 const char *group = NULL;
3475 char buf[SIZEOF_STR];
3476 size_t bufpos;
3477 bool add_title = TRUE;
3478 int i;
3480 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3481 const char *key = NULL;
3483 if (req_info[i].request == REQ_NONE)
3484 continue;
3486 if (!req_info[i].request) {
3487 group = req_info[i].help;
3488 continue;
3489 }
3491 key = get_keys(keymap, req_info[i].request, TRUE);
3492 if (!key || !*key)
3493 continue;
3495 if (add_title && help_open_keymap_title(view, keymap))
3496 return;
3497 add_title = FALSE;
3499 if (group) {
3500 add_line_text(view, group, LINE_HELP_GROUP);
3501 group = NULL;
3502 }
3504 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3505 enum_name(req_info[i]), req_info[i].help);
3506 }
3508 group = "External commands:";
3510 for (i = 0; i < run_requests; i++) {
3511 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3512 const char *key;
3513 int argc;
3515 if (!req || req->keymap != keymap)
3516 continue;
3518 key = get_key_name(req->key);
3519 if (!*key)
3520 key = "(no key defined)";
3522 if (add_title && help_open_keymap_title(view, keymap))
3523 return;
3524 if (group) {
3525 add_line_text(view, group, LINE_HELP_GROUP);
3526 group = NULL;
3527 }
3529 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3530 if (!string_format_from(buf, &bufpos, "%s%s",
3531 argc ? " " : "", req->argv[argc]))
3532 return;
3534 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3535 }
3536 }
3538 static bool
3539 help_open(struct view *view, enum open_flags flags)
3540 {
3541 enum keymap keymap;
3543 reset_view(view);
3544 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3545 add_line_text(view, "", LINE_DEFAULT);
3547 for (keymap = 0; keymap < ARRAY_SIZE(keymap_map); keymap++)
3548 help_open_keymap(view, keymap);
3550 return TRUE;
3551 }
3553 static enum request
3554 help_request(struct view *view, enum request request, struct line *line)
3555 {
3556 switch (request) {
3557 case REQ_ENTER:
3558 if (line->type == LINE_HELP_KEYMAP) {
3559 help_keymap_hidden[line->other] =
3560 !help_keymap_hidden[line->other];
3561 refresh_view(view);
3562 }
3564 return REQ_NONE;
3565 default:
3566 return pager_request(view, request, line);
3567 }
3568 }
3570 static struct view_ops help_ops = {
3571 "line",
3572 help_open,
3573 NULL,
3574 pager_draw,
3575 help_request,
3576 pager_grep,
3577 pager_select,
3578 };
3581 /*
3582 * Tree backend
3583 */
3585 struct tree_stack_entry {
3586 struct tree_stack_entry *prev; /* Entry below this in the stack */
3587 unsigned long lineno; /* Line number to restore */
3588 char *name; /* Position of name in opt_path */
3589 };
3591 /* The top of the path stack. */
3592 static struct tree_stack_entry *tree_stack = NULL;
3593 unsigned long tree_lineno = 0;
3595 static void
3596 pop_tree_stack_entry(void)
3597 {
3598 struct tree_stack_entry *entry = tree_stack;
3600 tree_lineno = entry->lineno;
3601 entry->name[0] = 0;
3602 tree_stack = entry->prev;
3603 free(entry);
3604 }
3606 static void
3607 push_tree_stack_entry(const char *name, unsigned long lineno)
3608 {
3609 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3610 size_t pathlen = strlen(opt_path);
3612 if (!entry)
3613 return;
3615 entry->prev = tree_stack;
3616 entry->name = opt_path + pathlen;
3617 tree_stack = entry;
3619 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3620 pop_tree_stack_entry();
3621 return;
3622 }
3624 /* Move the current line to the first tree entry. */
3625 tree_lineno = 1;
3626 entry->lineno = lineno;
3627 }
3629 /* Parse output from git-ls-tree(1):
3630 *
3631 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3632 */
3634 #define SIZEOF_TREE_ATTR \
3635 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3637 #define SIZEOF_TREE_MODE \
3638 STRING_SIZE("100644 ")
3640 #define TREE_ID_OFFSET \
3641 STRING_SIZE("100644 blob ")
3643 struct tree_entry {
3644 char id[SIZEOF_REV];
3645 mode_t mode;
3646 struct time time; /* Date from the author ident. */
3647 const char *author; /* Author of the commit. */
3648 char name[1];
3649 };
3651 static const char *
3652 tree_path(const struct line *line)
3653 {
3654 return ((struct tree_entry *) line->data)->name;
3655 }
3657 static int
3658 tree_compare_entry(const struct line *line1, const struct line *line2)
3659 {
3660 if (line1->type != line2->type)
3661 return line1->type == LINE_TREE_DIR ? -1 : 1;
3662 return strcmp(tree_path(line1), tree_path(line2));
3663 }
3665 static const enum sort_field tree_sort_fields[] = {
3666 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3667 };
3668 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3670 static int
3671 tree_compare(const void *l1, const void *l2)
3672 {
3673 const struct line *line1 = (const struct line *) l1;
3674 const struct line *line2 = (const struct line *) l2;
3675 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3676 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3678 if (line1->type == LINE_TREE_HEAD)
3679 return -1;
3680 if (line2->type == LINE_TREE_HEAD)
3681 return 1;
3683 switch (get_sort_field(tree_sort_state)) {
3684 case ORDERBY_DATE:
3685 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3687 case ORDERBY_AUTHOR:
3688 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3690 case ORDERBY_NAME:
3691 default:
3692 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3693 }
3694 }
3697 static struct line *
3698 tree_entry(struct view *view, enum line_type type, const char *path,
3699 const char *mode, const char *id)
3700 {
3701 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3702 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3704 if (!entry || !line) {
3705 free(entry);
3706 return NULL;
3707 }
3709 strncpy(entry->name, path, strlen(path));
3710 if (mode)
3711 entry->mode = strtoul(mode, NULL, 8);
3712 if (id)
3713 string_copy_rev(entry->id, id);
3715 return line;
3716 }
3718 static bool
3719 tree_read_date(struct view *view, char *text, bool *read_date)
3720 {
3721 static const char *author_name;
3722 static struct time author_time;
3724 if (!text && *read_date) {
3725 *read_date = FALSE;
3726 return TRUE;
3728 } else if (!text) {
3729 /* Find next entry to process */
3730 const char *log_file[] = {
3731 "git", "log", "--no-color", "--pretty=raw",
3732 "--cc", "--raw", view->id, "--", "%(directory)", NULL
3733 };
3735 if (!view->lines) {
3736 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3737 report("Tree is empty");
3738 return TRUE;
3739 }
3741 if (!begin_update(view, opt_cdup, log_file, OPEN_EXTRA)) {
3742 report("Failed to load tree data");
3743 return TRUE;
3744 }
3746 *read_date = TRUE;
3747 return FALSE;
3749 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3750 parse_author_line(text + STRING_SIZE("author "),
3751 &author_name, &author_time);
3753 } else if (*text == ':') {
3754 char *pos;
3755 size_t annotated = 1;
3756 size_t i;
3758 pos = strchr(text, '\t');
3759 if (!pos)
3760 return TRUE;
3761 text = pos + 1;
3762 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3763 text += strlen(opt_path);
3764 pos = strchr(text, '/');
3765 if (pos)
3766 *pos = 0;
3768 for (i = 1; i < view->lines; i++) {
3769 struct line *line = &view->line[i];
3770 struct tree_entry *entry = line->data;
3772 annotated += !!entry->author;
3773 if (entry->author || strcmp(entry->name, text))
3774 continue;
3776 entry->author = author_name;
3777 entry->time = author_time;
3778 line->dirty = 1;
3779 break;
3780 }
3782 if (annotated == view->lines)
3783 io_kill(view->pipe);
3784 }
3785 return TRUE;
3786 }
3788 static bool
3789 tree_read(struct view *view, char *text)
3790 {
3791 static bool read_date = FALSE;
3792 struct tree_entry *data;
3793 struct line *entry, *line;
3794 enum line_type type;
3795 size_t textlen = text ? strlen(text) : 0;
3796 char *path = text + SIZEOF_TREE_ATTR;
3798 if (read_date || !text)
3799 return tree_read_date(view, text, &read_date);
3801 if (textlen <= SIZEOF_TREE_ATTR)
3802 return FALSE;
3803 if (view->lines == 0 &&
3804 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3805 return FALSE;
3807 /* Strip the path part ... */
3808 if (*opt_path) {
3809 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3810 size_t striplen = strlen(opt_path);
3812 if (pathlen > striplen)
3813 memmove(path, path + striplen,
3814 pathlen - striplen + 1);
3816 /* Insert "link" to parent directory. */
3817 if (view->lines == 1 &&
3818 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3819 return FALSE;
3820 }
3822 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3823 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3824 if (!entry)
3825 return FALSE;
3826 data = entry->data;
3828 /* Skip "Directory ..." and ".." line. */
3829 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3830 if (tree_compare_entry(line, entry) <= 0)
3831 continue;
3833 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3835 line->data = data;
3836 line->type = type;
3837 for (; line <= entry; line++)
3838 line->dirty = line->cleareol = 1;
3839 return TRUE;
3840 }
3842 if (tree_lineno > view->lineno) {
3843 view->lineno = tree_lineno;
3844 tree_lineno = 0;
3845 }
3847 return TRUE;
3848 }
3850 static bool
3851 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3852 {
3853 struct tree_entry *entry = line->data;
3855 if (line->type == LINE_TREE_HEAD) {
3856 if (draw_text(view, line->type, "Directory path /"))
3857 return TRUE;
3858 } else {
3859 if (draw_mode(view, entry->mode))
3860 return TRUE;
3862 if (draw_author(view, entry->author))
3863 return TRUE;
3865 if (draw_date(view, &entry->time))
3866 return TRUE;
3867 }
3869 draw_text(view, line->type, entry->name);
3870 return TRUE;
3871 }
3873 static void
3874 open_blob_editor(const char *id)
3875 {
3876 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3877 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3878 int fd = mkstemp(file);
3880 if (fd == -1)
3881 report("Failed to create temporary file");
3882 else if (!io_run_append(blob_argv, fd))
3883 report("Failed to save blob data to file");
3884 else
3885 open_editor(file);
3886 if (fd != -1)
3887 unlink(file);
3888 }
3890 static enum request
3891 tree_request(struct view *view, enum request request, struct line *line)
3892 {
3893 enum open_flags flags;
3894 struct tree_entry *entry = line->data;
3896 switch (request) {
3897 case REQ_VIEW_BLAME:
3898 if (line->type != LINE_TREE_FILE) {
3899 report("Blame only supported for files");
3900 return REQ_NONE;
3901 }
3903 string_copy(opt_ref, view->vid);
3904 return request;
3906 case REQ_EDIT:
3907 if (line->type != LINE_TREE_FILE) {
3908 report("Edit only supported for files");
3909 } else if (!is_head_commit(view->vid)) {
3910 open_blob_editor(entry->id);
3911 } else {
3912 open_editor(opt_file);
3913 }
3914 return REQ_NONE;
3916 case REQ_TOGGLE_SORT_FIELD:
3917 case REQ_TOGGLE_SORT_ORDER:
3918 sort_view(view, request, &tree_sort_state, tree_compare);
3919 return REQ_NONE;
3921 case REQ_PARENT:
3922 if (!*opt_path) {
3923 /* quit view if at top of tree */
3924 return REQ_VIEW_CLOSE;
3925 }
3926 /* fake 'cd ..' */
3927 line = &view->line[1];
3928 break;
3930 case REQ_ENTER:
3931 break;
3933 default:
3934 return request;
3935 }
3937 /* Cleanup the stack if the tree view is at a different tree. */
3938 while (!*opt_path && tree_stack)
3939 pop_tree_stack_entry();
3941 switch (line->type) {
3942 case LINE_TREE_DIR:
3943 /* Depending on whether it is a subdirectory or parent link
3944 * mangle the path buffer. */
3945 if (line == &view->line[1] && *opt_path) {
3946 pop_tree_stack_entry();
3948 } else {
3949 const char *basename = tree_path(line);
3951 push_tree_stack_entry(basename, view->lineno);
3952 }
3954 /* Trees and subtrees share the same ID, so they are not not
3955 * unique like blobs. */
3956 flags = OPEN_RELOAD;
3957 request = REQ_VIEW_TREE;
3958 break;
3960 case LINE_TREE_FILE:
3961 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3962 request = REQ_VIEW_BLOB;
3963 break;
3965 default:
3966 return REQ_NONE;
3967 }
3969 open_view(view, request, flags);
3970 if (request == REQ_VIEW_TREE)
3971 view->lineno = tree_lineno;
3973 return REQ_NONE;
3974 }
3976 static bool
3977 tree_grep(struct view *view, struct line *line)
3978 {
3979 struct tree_entry *entry = line->data;
3980 const char *text[] = {
3981 entry->name,
3982 mkauthor(entry->author, opt_author_cols, opt_author),
3983 mkdate(&entry->time, opt_date),
3984 NULL
3985 };
3987 return grep_text(view, text);
3988 }
3990 static void
3991 tree_select(struct view *view, struct line *line)
3992 {
3993 struct tree_entry *entry = line->data;
3995 if (line->type == LINE_TREE_FILE) {
3996 string_copy_rev(ref_blob, entry->id);
3997 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3999 } else if (line->type != LINE_TREE_DIR) {
4000 return;
4001 }
4003 string_copy_rev(view->ref, entry->id);
4004 }
4006 static bool
4007 tree_open(struct view *view, enum open_flags flags)
4008 {
4009 static const char *tree_argv[] = {
4010 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4011 };
4013 if (view->lines == 0 && opt_prefix[0]) {
4014 char *pos = opt_prefix;
4016 while (pos && *pos) {
4017 char *end = strchr(pos, '/');
4019 if (end)
4020 *end = 0;
4021 push_tree_stack_entry(pos, 0);
4022 pos = end;
4023 if (end) {
4024 *end = '/';
4025 pos++;
4026 }
4027 }
4029 } else if (strcmp(view->vid, view->id)) {
4030 opt_path[0] = 0;
4031 }
4033 return begin_update(view, opt_cdup, tree_argv, flags);
4034 }
4036 static struct view_ops tree_ops = {
4037 "file",
4038 tree_open,
4039 tree_read,
4040 tree_draw,
4041 tree_request,
4042 tree_grep,
4043 tree_select,
4044 };
4046 static bool
4047 blob_open(struct view *view, enum open_flags flags)
4048 {
4049 static const char *blob_argv[] = {
4050 "git", "cat-file", "blob", "%(blob)", NULL
4051 };
4053 return begin_update(view, NULL, blob_argv, flags);
4054 }
4056 static bool
4057 blob_read(struct view *view, char *line)
4058 {
4059 if (!line)
4060 return TRUE;
4061 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4062 }
4064 static enum request
4065 blob_request(struct view *view, enum request request, struct line *line)
4066 {
4067 switch (request) {
4068 case REQ_EDIT:
4069 open_blob_editor(view->vid);
4070 return REQ_NONE;
4071 default:
4072 return pager_request(view, request, line);
4073 }
4074 }
4076 static struct view_ops blob_ops = {
4077 "line",
4078 blob_open,
4079 blob_read,
4080 pager_draw,
4081 blob_request,
4082 pager_grep,
4083 pager_select,
4084 };
4086 /*
4087 * Blame backend
4088 *
4089 * Loading the blame view is a two phase job:
4090 *
4091 * 1. File content is read either using opt_file from the
4092 * filesystem or using git-cat-file.
4093 * 2. Then blame information is incrementally added by
4094 * reading output from git-blame.
4095 */
4097 struct blame_commit {
4098 char id[SIZEOF_REV]; /* SHA1 ID. */
4099 char title[128]; /* First line of the commit message. */
4100 const char *author; /* Author of the commit. */
4101 struct time time; /* Date from the author ident. */
4102 char filename[128]; /* Name of file. */
4103 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4104 char parent_filename[128]; /* Parent/previous name of file. */
4105 };
4107 struct blame {
4108 struct blame_commit *commit;
4109 unsigned long lineno;
4110 char text[1];
4111 };
4113 static bool
4114 blame_open(struct view *view, enum open_flags flags)
4115 {
4116 const char *file_argv[] = { opt_cdup, opt_file , NULL };
4117 char path[SIZEOF_STR];
4118 size_t i;
4120 if (!view->prev && *opt_prefix) {
4121 string_copy(path, opt_file);
4122 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4123 return FALSE;
4124 }
4126 if (*opt_ref || !begin_update(view, opt_cdup, file_argv, flags)) {
4127 const char *blame_cat_file_argv[] = {
4128 "git", "cat-file", "blob", "%(ref):%(file)", NULL
4129 };
4131 if (!begin_update(view, opt_cdup, blame_cat_file_argv, flags))
4132 return FALSE;
4133 }
4135 /* First pass: remove multiple references to the same commit. */
4136 for (i = 0; i < view->lines; i++) {
4137 struct blame *blame = view->line[i].data;
4139 if (blame->commit && blame->commit->id[0])
4140 blame->commit->id[0] = 0;
4141 else
4142 blame->commit = NULL;
4143 }
4145 /* Second pass: free existing references. */
4146 for (i = 0; i < view->lines; i++) {
4147 struct blame *blame = view->line[i].data;
4149 if (blame->commit)
4150 free(blame->commit);
4151 }
4153 string_format(view->vid, "%s", opt_file);
4154 string_format(view->ref, "%s ...", opt_file);
4156 return TRUE;
4157 }
4159 static struct blame_commit *
4160 get_blame_commit(struct view *view, const char *id)
4161 {
4162 size_t i;
4164 for (i = 0; i < view->lines; i++) {
4165 struct blame *blame = view->line[i].data;
4167 if (!blame->commit)
4168 continue;
4170 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4171 return blame->commit;
4172 }
4174 {
4175 struct blame_commit *commit = calloc(1, sizeof(*commit));
4177 if (commit)
4178 string_ncopy(commit->id, id, SIZEOF_REV);
4179 return commit;
4180 }
4181 }
4183 static bool
4184 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4185 {
4186 const char *pos = *posref;
4188 *posref = NULL;
4189 pos = strchr(pos + 1, ' ');
4190 if (!pos || !isdigit(pos[1]))
4191 return FALSE;
4192 *number = atoi(pos + 1);
4193 if (*number < min || *number > max)
4194 return FALSE;
4196 *posref = pos;
4197 return TRUE;
4198 }
4200 static struct blame_commit *
4201 parse_blame_commit(struct view *view, const char *text, int *blamed)
4202 {
4203 struct blame_commit *commit;
4204 struct blame *blame;
4205 const char *pos = text + SIZEOF_REV - 2;
4206 size_t orig_lineno = 0;
4207 size_t lineno;
4208 size_t group;
4210 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4211 return NULL;
4213 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4214 !parse_number(&pos, &lineno, 1, view->lines) ||
4215 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4216 return NULL;
4218 commit = get_blame_commit(view, text);
4219 if (!commit)
4220 return NULL;
4222 *blamed += group;
4223 while (group--) {
4224 struct line *line = &view->line[lineno + group - 1];
4226 blame = line->data;
4227 blame->commit = commit;
4228 blame->lineno = orig_lineno + group - 1;
4229 line->dirty = 1;
4230 }
4232 return commit;
4233 }
4235 static bool
4236 blame_read_file(struct view *view, const char *line, bool *read_file)
4237 {
4238 if (!line) {
4239 const char *blame_argv[] = {
4240 "git", "blame", "%(blameargs)", "--incremental",
4241 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4242 };
4244 if (view->lines == 0 && !view->prev)
4245 die("No blame exist for %s", view->vid);
4247 if (view->lines == 0 || !begin_update(view, opt_cdup, blame_argv, OPEN_EXTRA)) {
4248 report("Failed to load blame data");
4249 return TRUE;
4250 }
4252 *read_file = FALSE;
4253 return FALSE;
4255 } else {
4256 size_t linelen = strlen(line);
4257 struct blame *blame = malloc(sizeof(*blame) + linelen);
4259 if (!blame)
4260 return FALSE;
4262 blame->commit = NULL;
4263 strncpy(blame->text, line, linelen);
4264 blame->text[linelen] = 0;
4265 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4266 }
4267 }
4269 static bool
4270 match_blame_header(const char *name, char **line)
4271 {
4272 size_t namelen = strlen(name);
4273 bool matched = !strncmp(name, *line, namelen);
4275 if (matched)
4276 *line += namelen;
4278 return matched;
4279 }
4281 static bool
4282 blame_read(struct view *view, char *line)
4283 {
4284 static struct blame_commit *commit = NULL;
4285 static int blamed = 0;
4286 static bool read_file = TRUE;
4288 if (read_file)
4289 return blame_read_file(view, line, &read_file);
4291 if (!line) {
4292 /* Reset all! */
4293 commit = NULL;
4294 blamed = 0;
4295 read_file = TRUE;
4296 string_format(view->ref, "%s", view->vid);
4297 if (view_is_displayed(view)) {
4298 update_view_title(view);
4299 redraw_view_from(view, 0);
4300 }
4301 return TRUE;
4302 }
4304 if (!commit) {
4305 commit = parse_blame_commit(view, line, &blamed);
4306 string_format(view->ref, "%s %2d%%", view->vid,
4307 view->lines ? blamed * 100 / view->lines : 0);
4309 } else if (match_blame_header("author ", &line)) {
4310 commit->author = get_author(line);
4312 } else if (match_blame_header("author-time ", &line)) {
4313 parse_timesec(&commit->time, line);
4315 } else if (match_blame_header("author-tz ", &line)) {
4316 parse_timezone(&commit->time, line);
4318 } else if (match_blame_header("summary ", &line)) {
4319 string_ncopy(commit->title, line, strlen(line));
4321 } else if (match_blame_header("previous ", &line)) {
4322 if (strlen(line) <= SIZEOF_REV)
4323 return FALSE;
4324 string_copy_rev(commit->parent_id, line);
4325 line += SIZEOF_REV;
4326 string_ncopy(commit->parent_filename, line, strlen(line));
4328 } else if (match_blame_header("filename ", &line)) {
4329 string_ncopy(commit->filename, line, strlen(line));
4330 commit = NULL;
4331 }
4333 return TRUE;
4334 }
4336 static bool
4337 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4338 {
4339 struct blame *blame = line->data;
4340 struct time *time = NULL;
4341 const char *id = NULL, *author = NULL;
4343 if (blame->commit && *blame->commit->filename) {
4344 id = blame->commit->id;
4345 author = blame->commit->author;
4346 time = &blame->commit->time;
4347 }
4349 if (draw_date(view, time))
4350 return TRUE;
4352 if (draw_author(view, author))
4353 return TRUE;
4355 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4356 return TRUE;
4358 if (draw_lineno(view, lineno))
4359 return TRUE;
4361 draw_text(view, LINE_DEFAULT, blame->text);
4362 return TRUE;
4363 }
4365 static bool
4366 check_blame_commit(struct blame *blame, bool check_null_id)
4367 {
4368 if (!blame->commit)
4369 report("Commit data not loaded yet");
4370 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4371 report("No commit exist for the selected line");
4372 else
4373 return TRUE;
4374 return FALSE;
4375 }
4377 static void
4378 setup_blame_parent_line(struct view *view, struct blame *blame)
4379 {
4380 char from[SIZEOF_REF + SIZEOF_STR];
4381 char to[SIZEOF_REF + SIZEOF_STR];
4382 const char *diff_tree_argv[] = {
4383 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4384 "-U0", from, to, "--", NULL
4385 };
4386 struct io io;
4387 int parent_lineno = -1;
4388 int blamed_lineno = -1;
4389 char *line;
4391 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4392 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4393 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4394 return;
4396 while ((line = io_get(&io, '\n', TRUE))) {
4397 if (*line == '@') {
4398 char *pos = strchr(line, '+');
4400 parent_lineno = atoi(line + 4);
4401 if (pos)
4402 blamed_lineno = atoi(pos + 1);
4404 } else if (*line == '+' && parent_lineno != -1) {
4405 if (blame->lineno == blamed_lineno - 1 &&
4406 !strcmp(blame->text, line + 1)) {
4407 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4408 break;
4409 }
4410 blamed_lineno++;
4411 }
4412 }
4414 io_done(&io);
4415 }
4417 static enum request
4418 blame_request(struct view *view, enum request request, struct line *line)
4419 {
4420 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4421 struct blame *blame = line->data;
4423 switch (request) {
4424 case REQ_VIEW_BLAME:
4425 if (check_blame_commit(blame, TRUE)) {
4426 string_copy(opt_ref, blame->commit->id);
4427 string_copy(opt_file, blame->commit->filename);
4428 if (blame->lineno)
4429 view->lineno = blame->lineno;
4430 reload_view(view);
4431 }
4432 break;
4434 case REQ_PARENT:
4435 if (!check_blame_commit(blame, TRUE))
4436 break;
4437 if (!*blame->commit->parent_id) {
4438 report("The selected commit has no parents");
4439 } else {
4440 string_copy_rev(opt_ref, blame->commit->parent_id);
4441 string_copy(opt_file, blame->commit->parent_filename);
4442 setup_blame_parent_line(view, blame);
4443 reload_view(view);
4444 }
4445 break;
4447 case REQ_ENTER:
4448 if (!check_blame_commit(blame, FALSE))
4449 break;
4451 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4452 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4453 break;
4455 if (!strcmp(blame->commit->id, NULL_ID)) {
4456 struct view *diff = VIEW(REQ_VIEW_DIFF);
4457 const char *diff_index_argv[] = {
4458 "git", "diff-index", "--root", "--patch-with-stat",
4459 "-C", "-M", "HEAD", "--", view->vid, NULL
4460 };
4462 if (!*blame->commit->parent_id) {
4463 diff_index_argv[1] = "diff";
4464 diff_index_argv[2] = "--no-color";
4465 diff_index_argv[6] = "--";
4466 diff_index_argv[7] = "/dev/null";
4467 }
4469 open_argv(view, diff, diff_index_argv, NULL, flags);
4470 } else {
4471 open_view(view, REQ_VIEW_DIFF, flags);
4472 }
4473 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4474 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4475 break;
4477 default:
4478 return request;
4479 }
4481 return REQ_NONE;
4482 }
4484 static bool
4485 blame_grep(struct view *view, struct line *line)
4486 {
4487 struct blame *blame = line->data;
4488 struct blame_commit *commit = blame->commit;
4489 const char *text[] = {
4490 blame->text,
4491 commit ? commit->title : "",
4492 commit ? commit->id : "",
4493 commit && opt_author ? commit->author : "",
4494 commit ? mkdate(&commit->time, opt_date) : "",
4495 NULL
4496 };
4498 return grep_text(view, text);
4499 }
4501 static void
4502 blame_select(struct view *view, struct line *line)
4503 {
4504 struct blame *blame = line->data;
4505 struct blame_commit *commit = blame->commit;
4507 if (!commit)
4508 return;
4510 if (!strcmp(commit->id, NULL_ID))
4511 string_ncopy(ref_commit, "HEAD", 4);
4512 else
4513 string_copy_rev(ref_commit, commit->id);
4514 }
4516 static struct view_ops blame_ops = {
4517 "line",
4518 blame_open,
4519 blame_read,
4520 blame_draw,
4521 blame_request,
4522 blame_grep,
4523 blame_select,
4524 };
4526 /*
4527 * Branch backend
4528 */
4530 struct branch {
4531 const char *author; /* Author of the last commit. */
4532 struct time time; /* Date of the last activity. */
4533 const struct ref *ref; /* Name and commit ID information. */
4534 };
4536 static const struct ref branch_all;
4538 static const enum sort_field branch_sort_fields[] = {
4539 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4540 };
4541 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4543 static int
4544 branch_compare(const void *l1, const void *l2)
4545 {
4546 const struct branch *branch1 = ((const struct line *) l1)->data;
4547 const struct branch *branch2 = ((const struct line *) l2)->data;
4549 switch (get_sort_field(branch_sort_state)) {
4550 case ORDERBY_DATE:
4551 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4553 case ORDERBY_AUTHOR:
4554 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4556 case ORDERBY_NAME:
4557 default:
4558 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4559 }
4560 }
4562 static bool
4563 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4564 {
4565 struct branch *branch = line->data;
4566 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4568 if (draw_date(view, &branch->time))
4569 return TRUE;
4571 if (draw_author(view, branch->author))
4572 return TRUE;
4574 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4575 return TRUE;
4576 }
4578 static enum request
4579 branch_request(struct view *view, enum request request, struct line *line)
4580 {
4581 struct branch *branch = line->data;
4583 switch (request) {
4584 case REQ_REFRESH:
4585 load_refs();
4586 refresh_view(view);
4587 return REQ_NONE;
4589 case REQ_TOGGLE_SORT_FIELD:
4590 case REQ_TOGGLE_SORT_ORDER:
4591 sort_view(view, request, &branch_sort_state, branch_compare);
4592 return REQ_NONE;
4594 case REQ_ENTER:
4595 {
4596 const struct ref *ref = branch->ref;
4597 const char *all_branches_argv[] = {
4598 "git", "log", "--no-color", "--pretty=raw", "--parents",
4599 "--topo-order",
4600 ref == &branch_all ? "--all" : ref->name, NULL
4601 };
4602 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4604 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
4605 return REQ_NONE;
4606 }
4607 default:
4608 return request;
4609 }
4610 }
4612 static bool
4613 branch_read(struct view *view, char *line)
4614 {
4615 static char id[SIZEOF_REV];
4616 struct branch *reference;
4617 size_t i;
4619 if (!line)
4620 return TRUE;
4622 switch (get_line_type(line)) {
4623 case LINE_COMMIT:
4624 string_copy_rev(id, line + STRING_SIZE("commit "));
4625 return TRUE;
4627 case LINE_AUTHOR:
4628 for (i = 0, reference = NULL; i < view->lines; i++) {
4629 struct branch *branch = view->line[i].data;
4631 if (strcmp(branch->ref->id, id))
4632 continue;
4634 view->line[i].dirty = TRUE;
4635 if (reference) {
4636 branch->author = reference->author;
4637 branch->time = reference->time;
4638 continue;
4639 }
4641 parse_author_line(line + STRING_SIZE("author "),
4642 &branch->author, &branch->time);
4643 reference = branch;
4644 }
4645 return TRUE;
4647 default:
4648 return TRUE;
4649 }
4651 }
4653 static bool
4654 branch_open_visitor(void *data, const struct ref *ref)
4655 {
4656 struct view *view = data;
4657 struct branch *branch;
4659 if (ref->tag || ref->ltag || ref->remote)
4660 return TRUE;
4662 branch = calloc(1, sizeof(*branch));
4663 if (!branch)
4664 return FALSE;
4666 branch->ref = ref;
4667 return !!add_line_data(view, branch, LINE_DEFAULT);
4668 }
4670 static bool
4671 branch_open(struct view *view, enum open_flags flags)
4672 {
4673 const char *branch_log[] = {
4674 "git", "log", "--no-color", "--pretty=raw",
4675 "--simplify-by-decoration", "--all", NULL
4676 };
4678 if (!begin_update(view, NULL, branch_log, flags)) {
4679 report("Failed to load branch data");
4680 return TRUE;
4681 }
4683 branch_open_visitor(view, &branch_all);
4684 foreach_ref(branch_open_visitor, view);
4685 view->p_restore = TRUE;
4687 return TRUE;
4688 }
4690 static bool
4691 branch_grep(struct view *view, struct line *line)
4692 {
4693 struct branch *branch = line->data;
4694 const char *text[] = {
4695 branch->ref->name,
4696 mkauthor(branch->author, opt_author_cols, opt_author),
4697 NULL
4698 };
4700 return grep_text(view, text);
4701 }
4703 static void
4704 branch_select(struct view *view, struct line *line)
4705 {
4706 struct branch *branch = line->data;
4708 string_copy_rev(view->ref, branch->ref->id);
4709 string_copy_rev(ref_commit, branch->ref->id);
4710 string_copy_rev(ref_head, branch->ref->id);
4711 string_copy_rev(ref_branch, branch->ref->name);
4712 }
4714 static struct view_ops branch_ops = {
4715 "branch",
4716 branch_open,
4717 branch_read,
4718 branch_draw,
4719 branch_request,
4720 branch_grep,
4721 branch_select,
4722 };
4724 /*
4725 * Status backend
4726 */
4728 struct status {
4729 char status;
4730 struct {
4731 mode_t mode;
4732 char rev[SIZEOF_REV];
4733 char name[SIZEOF_STR];
4734 } old;
4735 struct {
4736 mode_t mode;
4737 char rev[SIZEOF_REV];
4738 char name[SIZEOF_STR];
4739 } new;
4740 };
4742 static char status_onbranch[SIZEOF_STR];
4743 static struct status stage_status;
4744 static enum line_type stage_line_type;
4745 static size_t stage_chunks;
4746 static int *stage_chunk;
4748 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4750 /* This should work even for the "On branch" line. */
4751 static inline bool
4752 status_has_none(struct view *view, struct line *line)
4753 {
4754 return line < view->line + view->lines && !line[1].data;
4755 }
4757 /* Get fields from the diff line:
4758 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4759 */
4760 static inline bool
4761 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4762 {
4763 const char *old_mode = buf + 1;
4764 const char *new_mode = buf + 8;
4765 const char *old_rev = buf + 15;
4766 const char *new_rev = buf + 56;
4767 const char *status = buf + 97;
4769 if (bufsize < 98 ||
4770 old_mode[-1] != ':' ||
4771 new_mode[-1] != ' ' ||
4772 old_rev[-1] != ' ' ||
4773 new_rev[-1] != ' ' ||
4774 status[-1] != ' ')
4775 return FALSE;
4777 file->status = *status;
4779 string_copy_rev(file->old.rev, old_rev);
4780 string_copy_rev(file->new.rev, new_rev);
4782 file->old.mode = strtoul(old_mode, NULL, 8);
4783 file->new.mode = strtoul(new_mode, NULL, 8);
4785 file->old.name[0] = file->new.name[0] = 0;
4787 return TRUE;
4788 }
4790 static bool
4791 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4792 {
4793 struct status *unmerged = NULL;
4794 char *buf;
4795 struct io io;
4797 if (!io_run(&io, IO_RD, opt_cdup, argv))
4798 return FALSE;
4800 add_line_data(view, NULL, type);
4802 while ((buf = io_get(&io, 0, TRUE))) {
4803 struct status *file = unmerged;
4805 if (!file) {
4806 file = calloc(1, sizeof(*file));
4807 if (!file || !add_line_data(view, file, type))
4808 goto error_out;
4809 }
4811 /* Parse diff info part. */
4812 if (status) {
4813 file->status = status;
4814 if (status == 'A')
4815 string_copy(file->old.rev, NULL_ID);
4817 } else if (!file->status || file == unmerged) {
4818 if (!status_get_diff(file, buf, strlen(buf)))
4819 goto error_out;
4821 buf = io_get(&io, 0, TRUE);
4822 if (!buf)
4823 break;
4825 /* Collapse all modified entries that follow an
4826 * associated unmerged entry. */
4827 if (unmerged == file) {
4828 unmerged->status = 'U';
4829 unmerged = NULL;
4830 } else if (file->status == 'U') {
4831 unmerged = file;
4832 }
4833 }
4835 /* Grab the old name for rename/copy. */
4836 if (!*file->old.name &&
4837 (file->status == 'R' || file->status == 'C')) {
4838 string_ncopy(file->old.name, buf, strlen(buf));
4840 buf = io_get(&io, 0, TRUE);
4841 if (!buf)
4842 break;
4843 }
4845 /* git-ls-files just delivers a NUL separated list of
4846 * file names similar to the second half of the
4847 * git-diff-* output. */
4848 string_ncopy(file->new.name, buf, strlen(buf));
4849 if (!*file->old.name)
4850 string_copy(file->old.name, file->new.name);
4851 file = NULL;
4852 }
4854 if (io_error(&io)) {
4855 error_out:
4856 io_done(&io);
4857 return FALSE;
4858 }
4860 if (!view->line[view->lines - 1].data)
4861 add_line_data(view, NULL, LINE_STAT_NONE);
4863 io_done(&io);
4864 return TRUE;
4865 }
4867 /* Don't show unmerged entries in the staged section. */
4868 static const char *status_diff_index_argv[] = {
4869 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4870 "--cached", "-M", "HEAD", NULL
4871 };
4873 static const char *status_diff_files_argv[] = {
4874 "git", "diff-files", "-z", NULL
4875 };
4877 static const char *status_list_other_argv[] = {
4878 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4879 };
4881 static const char *status_list_no_head_argv[] = {
4882 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4883 };
4885 static const char *update_index_argv[] = {
4886 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4887 };
4889 /* Restore the previous line number to stay in the context or select a
4890 * line with something that can be updated. */
4891 static void
4892 status_restore(struct view *view)
4893 {
4894 if (view->p_lineno >= view->lines)
4895 view->p_lineno = view->lines - 1;
4896 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4897 view->p_lineno++;
4898 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4899 view->p_lineno--;
4901 /* If the above fails, always skip the "On branch" line. */
4902 if (view->p_lineno < view->lines)
4903 view->lineno = view->p_lineno;
4904 else
4905 view->lineno = 1;
4907 if (view->lineno < view->offset)
4908 view->offset = view->lineno;
4909 else if (view->offset + view->height <= view->lineno)
4910 view->offset = view->lineno - view->height + 1;
4912 view->p_restore = FALSE;
4913 }
4915 static void
4916 status_update_onbranch(void)
4917 {
4918 static const char *paths[][2] = {
4919 { "rebase-apply/rebasing", "Rebasing" },
4920 { "rebase-apply/applying", "Applying mailbox" },
4921 { "rebase-apply/", "Rebasing mailbox" },
4922 { "rebase-merge/interactive", "Interactive rebase" },
4923 { "rebase-merge/", "Rebase merge" },
4924 { "MERGE_HEAD", "Merging" },
4925 { "BISECT_LOG", "Bisecting" },
4926 { "HEAD", "On branch" },
4927 };
4928 char buf[SIZEOF_STR];
4929 struct stat stat;
4930 int i;
4932 if (is_initial_commit()) {
4933 string_copy(status_onbranch, "Initial commit");
4934 return;
4935 }
4937 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4938 char *head = opt_head;
4940 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4941 lstat(buf, &stat) < 0)
4942 continue;
4944 if (!*opt_head) {
4945 struct io io;
4947 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4948 io_read_buf(&io, buf, sizeof(buf))) {
4949 head = buf;
4950 if (!prefixcmp(head, "refs/heads/"))
4951 head += STRING_SIZE("refs/heads/");
4952 }
4953 }
4955 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4956 string_copy(status_onbranch, opt_head);
4957 return;
4958 }
4960 string_copy(status_onbranch, "Not currently on any branch");
4961 }
4963 /* First parse staged info using git-diff-index(1), then parse unstaged
4964 * info using git-diff-files(1), and finally untracked files using
4965 * git-ls-files(1). */
4966 static bool
4967 status_open(struct view *view, enum open_flags flags)
4968 {
4969 reset_view(view);
4971 add_line_data(view, NULL, LINE_STAT_HEAD);
4972 status_update_onbranch();
4974 io_run_bg(update_index_argv);
4976 if (is_initial_commit()) {
4977 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4978 return FALSE;
4979 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4980 return FALSE;
4981 }
4983 if (!opt_untracked_dirs_content)
4984 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
4986 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4987 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4988 return FALSE;
4990 /* Restore the exact position or use the specialized restore
4991 * mode? */
4992 if (!view->p_restore)
4993 status_restore(view);
4994 return TRUE;
4995 }
4997 static bool
4998 status_draw(struct view *view, struct line *line, unsigned int lineno)
4999 {
5000 struct status *status = line->data;
5001 enum line_type type;
5002 const char *text;
5004 if (!status) {
5005 switch (line->type) {
5006 case LINE_STAT_STAGED:
5007 type = LINE_STAT_SECTION;
5008 text = "Changes to be committed:";
5009 break;
5011 case LINE_STAT_UNSTAGED:
5012 type = LINE_STAT_SECTION;
5013 text = "Changed but not updated:";
5014 break;
5016 case LINE_STAT_UNTRACKED:
5017 type = LINE_STAT_SECTION;
5018 text = "Untracked files:";
5019 break;
5021 case LINE_STAT_NONE:
5022 type = LINE_DEFAULT;
5023 text = " (no files)";
5024 break;
5026 case LINE_STAT_HEAD:
5027 type = LINE_STAT_HEAD;
5028 text = status_onbranch;
5029 break;
5031 default:
5032 return FALSE;
5033 }
5034 } else {
5035 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5037 buf[0] = status->status;
5038 if (draw_text(view, line->type, buf))
5039 return TRUE;
5040 type = LINE_DEFAULT;
5041 text = status->new.name;
5042 }
5044 draw_text(view, type, text);
5045 return TRUE;
5046 }
5048 static enum request
5049 status_enter(struct view *view, struct line *line)
5050 {
5051 struct status *status = line->data;
5052 const char *oldpath = status ? status->old.name : NULL;
5053 /* Diffs for unmerged entries are empty when passing the new
5054 * path, so leave it empty. */
5055 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5056 const char *info;
5057 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5058 struct view *stage = VIEW(REQ_VIEW_STAGE);
5060 if (line->type == LINE_STAT_NONE ||
5061 (!status && line[1].type == LINE_STAT_NONE)) {
5062 report("No file to diff");
5063 return REQ_NONE;
5064 }
5066 switch (line->type) {
5067 case LINE_STAT_STAGED:
5068 if (is_initial_commit()) {
5069 const char *no_head_diff_argv[] = {
5070 "git", "diff", "--no-color", "--patch-with-stat",
5071 "--", "/dev/null", newpath, NULL
5072 };
5074 open_argv(view, stage, no_head_diff_argv, opt_cdup, flags);
5075 } else {
5076 const char *index_show_argv[] = {
5077 "git", "diff-index", "--root", "--patch-with-stat",
5078 "-C", "-M", "--cached", "HEAD", "--",
5079 oldpath, newpath, NULL
5080 };
5082 open_argv(view, stage, index_show_argv, opt_cdup, flags);
5083 }
5085 if (status)
5086 info = "Staged changes to %s";
5087 else
5088 info = "Staged changes";
5089 break;
5091 case LINE_STAT_UNSTAGED:
5092 {
5093 const char *files_show_argv[] = {
5094 "git", "diff-files", "--root", "--patch-with-stat",
5095 "-C", "-M", "--", oldpath, newpath, NULL
5096 };
5098 open_argv(view, stage, files_show_argv, opt_cdup, flags);
5099 if (status)
5100 info = "Unstaged changes to %s";
5101 else
5102 info = "Unstaged changes";
5103 break;
5104 }
5105 case LINE_STAT_UNTRACKED:
5106 if (!newpath) {
5107 report("No file to show");
5108 return REQ_NONE;
5109 }
5111 if (!suffixcmp(status->new.name, -1, "/")) {
5112 report("Cannot display a directory");
5113 return REQ_NONE;
5114 }
5116 open_file(view, stage, newpath, flags);
5117 info = "Untracked file %s";
5118 break;
5120 case LINE_STAT_HEAD:
5121 return REQ_NONE;
5123 default:
5124 die("line type %d not handled in switch", line->type);
5125 }
5127 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5128 if (status) {
5129 stage_status = *status;
5130 } else {
5131 memset(&stage_status, 0, sizeof(stage_status));
5132 }
5134 stage_line_type = line->type;
5135 stage_chunks = 0;
5136 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5137 }
5139 return REQ_NONE;
5140 }
5142 static bool
5143 status_exists(struct status *status, enum line_type type)
5144 {
5145 struct view *view = VIEW(REQ_VIEW_STATUS);
5146 unsigned long lineno;
5148 for (lineno = 0; lineno < view->lines; lineno++) {
5149 struct line *line = &view->line[lineno];
5150 struct status *pos = line->data;
5152 if (line->type != type)
5153 continue;
5154 if (!pos && (!status || !status->status) && line[1].data) {
5155 select_view_line(view, lineno);
5156 return TRUE;
5157 }
5158 if (pos && !strcmp(status->new.name, pos->new.name)) {
5159 select_view_line(view, lineno);
5160 return TRUE;
5161 }
5162 }
5164 return FALSE;
5165 }
5168 static bool
5169 status_update_prepare(struct io *io, enum line_type type)
5170 {
5171 const char *staged_argv[] = {
5172 "git", "update-index", "-z", "--index-info", NULL
5173 };
5174 const char *others_argv[] = {
5175 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5176 };
5178 switch (type) {
5179 case LINE_STAT_STAGED:
5180 return io_run(io, IO_WR, opt_cdup, staged_argv);
5182 case LINE_STAT_UNSTAGED:
5183 case LINE_STAT_UNTRACKED:
5184 return io_run(io, IO_WR, opt_cdup, others_argv);
5186 default:
5187 die("line type %d not handled in switch", type);
5188 return FALSE;
5189 }
5190 }
5192 static bool
5193 status_update_write(struct io *io, struct status *status, enum line_type type)
5194 {
5195 char buf[SIZEOF_STR];
5196 size_t bufsize = 0;
5198 switch (type) {
5199 case LINE_STAT_STAGED:
5200 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5201 status->old.mode,
5202 status->old.rev,
5203 status->old.name, 0))
5204 return FALSE;
5205 break;
5207 case LINE_STAT_UNSTAGED:
5208 case LINE_STAT_UNTRACKED:
5209 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5210 return FALSE;
5211 break;
5213 default:
5214 die("line type %d not handled in switch", type);
5215 }
5217 return io_write(io, buf, bufsize);
5218 }
5220 static bool
5221 status_update_file(struct status *status, enum line_type type)
5222 {
5223 struct io io;
5224 bool result;
5226 if (!status_update_prepare(&io, type))
5227 return FALSE;
5229 result = status_update_write(&io, status, type);
5230 return io_done(&io) && result;
5231 }
5233 static bool
5234 status_update_files(struct view *view, struct line *line)
5235 {
5236 char buf[sizeof(view->ref)];
5237 struct io io;
5238 bool result = TRUE;
5239 struct line *pos = view->line + view->lines;
5240 int files = 0;
5241 int file, done;
5242 int cursor_y = -1, cursor_x = -1;
5244 if (!status_update_prepare(&io, line->type))
5245 return FALSE;
5247 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5248 files++;
5250 string_copy(buf, view->ref);
5251 getsyx(cursor_y, cursor_x);
5252 for (file = 0, done = 5; result && file < files; line++, file++) {
5253 int almost_done = file * 100 / files;
5255 if (almost_done > done) {
5256 done = almost_done;
5257 string_format(view->ref, "updating file %u of %u (%d%% done)",
5258 file, files, done);
5259 update_view_title(view);
5260 setsyx(cursor_y, cursor_x);
5261 doupdate();
5262 }
5263 result = status_update_write(&io, line->data, line->type);
5264 }
5265 string_copy(view->ref, buf);
5267 return io_done(&io) && result;
5268 }
5270 static bool
5271 status_update(struct view *view)
5272 {
5273 struct line *line = &view->line[view->lineno];
5275 assert(view->lines);
5277 if (!line->data) {
5278 /* This should work even for the "On branch" line. */
5279 if (line < view->line + view->lines && !line[1].data) {
5280 report("Nothing to update");
5281 return FALSE;
5282 }
5284 if (!status_update_files(view, line + 1)) {
5285 report("Failed to update file status");
5286 return FALSE;
5287 }
5289 } else if (!status_update_file(line->data, line->type)) {
5290 report("Failed to update file status");
5291 return FALSE;
5292 }
5294 return TRUE;
5295 }
5297 static bool
5298 status_revert(struct status *status, enum line_type type, bool has_none)
5299 {
5300 if (!status || type != LINE_STAT_UNSTAGED) {
5301 if (type == LINE_STAT_STAGED) {
5302 report("Cannot revert changes to staged files");
5303 } else if (type == LINE_STAT_UNTRACKED) {
5304 report("Cannot revert changes to untracked files");
5305 } else if (has_none) {
5306 report("Nothing to revert");
5307 } else {
5308 report("Cannot revert changes to multiple files");
5309 }
5311 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5312 char mode[10] = "100644";
5313 const char *reset_argv[] = {
5314 "git", "update-index", "--cacheinfo", mode,
5315 status->old.rev, status->old.name, NULL
5316 };
5317 const char *checkout_argv[] = {
5318 "git", "checkout", "--", status->old.name, NULL
5319 };
5321 if (status->status == 'U') {
5322 string_format(mode, "%5o", status->old.mode);
5324 if (status->old.mode == 0 && status->new.mode == 0) {
5325 reset_argv[2] = "--force-remove";
5326 reset_argv[3] = status->old.name;
5327 reset_argv[4] = NULL;
5328 }
5330 if (!io_run_fg(reset_argv, opt_cdup))
5331 return FALSE;
5332 if (status->old.mode == 0 && status->new.mode == 0)
5333 return TRUE;
5334 }
5336 return io_run_fg(checkout_argv, opt_cdup);
5337 }
5339 return FALSE;
5340 }
5342 static enum request
5343 status_request(struct view *view, enum request request, struct line *line)
5344 {
5345 struct status *status = line->data;
5347 switch (request) {
5348 case REQ_STATUS_UPDATE:
5349 if (!status_update(view))
5350 return REQ_NONE;
5351 break;
5353 case REQ_STATUS_REVERT:
5354 if (!status_revert(status, line->type, status_has_none(view, line)))
5355 return REQ_NONE;
5356 break;
5358 case REQ_STATUS_MERGE:
5359 if (!status || status->status != 'U') {
5360 report("Merging only possible for files with unmerged status ('U').");
5361 return REQ_NONE;
5362 }
5363 open_mergetool(status->new.name);
5364 break;
5366 case REQ_EDIT:
5367 if (!status)
5368 return request;
5369 if (status->status == 'D') {
5370 report("File has been deleted.");
5371 return REQ_NONE;
5372 }
5374 open_editor(status->new.name);
5375 break;
5377 case REQ_VIEW_BLAME:
5378 if (status)
5379 opt_ref[0] = 0;
5380 return request;
5382 case REQ_ENTER:
5383 /* After returning the status view has been split to
5384 * show the stage view. No further reloading is
5385 * necessary. */
5386 return status_enter(view, line);
5388 case REQ_REFRESH:
5389 /* Simply reload the view. */
5390 break;
5392 default:
5393 return request;
5394 }
5396 refresh_view(view);
5398 return REQ_NONE;
5399 }
5401 static void
5402 status_select(struct view *view, struct line *line)
5403 {
5404 struct status *status = line->data;
5405 char file[SIZEOF_STR] = "all files";
5406 const char *text;
5407 const char *key;
5409 if (status && !string_format(file, "'%s'", status->new.name))
5410 return;
5412 if (!status && line[1].type == LINE_STAT_NONE)
5413 line++;
5415 switch (line->type) {
5416 case LINE_STAT_STAGED:
5417 text = "Press %s to unstage %s for commit";
5418 break;
5420 case LINE_STAT_UNSTAGED:
5421 text = "Press %s to stage %s for commit";
5422 break;
5424 case LINE_STAT_UNTRACKED:
5425 text = "Press %s to stage %s for addition";
5426 break;
5428 case LINE_STAT_HEAD:
5429 case LINE_STAT_NONE:
5430 text = "Nothing to update";
5431 break;
5433 default:
5434 die("line type %d not handled in switch", line->type);
5435 }
5437 if (status && status->status == 'U') {
5438 text = "Press %s to resolve conflict in %s";
5439 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5441 } else {
5442 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5443 }
5445 string_format(view->ref, text, key, file);
5446 if (status)
5447 string_copy(opt_file, status->new.name);
5448 }
5450 static bool
5451 status_grep(struct view *view, struct line *line)
5452 {
5453 struct status *status = line->data;
5455 if (status) {
5456 const char buf[2] = { status->status, 0 };
5457 const char *text[] = { status->new.name, buf, NULL };
5459 return grep_text(view, text);
5460 }
5462 return FALSE;
5463 }
5465 static struct view_ops status_ops = {
5466 "file",
5467 status_open,
5468 NULL,
5469 status_draw,
5470 status_request,
5471 status_grep,
5472 status_select,
5473 };
5476 static bool
5477 stage_diff_write(struct io *io, struct line *line, struct line *end)
5478 {
5479 while (line < end) {
5480 if (!io_write(io, line->data, strlen(line->data)) ||
5481 !io_write(io, "\n", 1))
5482 return FALSE;
5483 line++;
5484 if (line->type == LINE_DIFF_CHUNK ||
5485 line->type == LINE_DIFF_HEADER)
5486 break;
5487 }
5489 return TRUE;
5490 }
5492 static struct line *
5493 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5494 {
5495 for (; view->line < line; line--)
5496 if (line->type == type)
5497 return line;
5499 return NULL;
5500 }
5502 static bool
5503 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5504 {
5505 const char *apply_argv[SIZEOF_ARG] = {
5506 "git", "apply", "--whitespace=nowarn", NULL
5507 };
5508 struct line *diff_hdr;
5509 struct io io;
5510 int argc = 3;
5512 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5513 if (!diff_hdr)
5514 return FALSE;
5516 if (!revert)
5517 apply_argv[argc++] = "--cached";
5518 if (revert || stage_line_type == LINE_STAT_STAGED)
5519 apply_argv[argc++] = "-R";
5520 apply_argv[argc++] = "-";
5521 apply_argv[argc++] = NULL;
5522 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5523 return FALSE;
5525 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5526 !stage_diff_write(&io, chunk, view->line + view->lines))
5527 chunk = NULL;
5529 io_done(&io);
5530 io_run_bg(update_index_argv);
5532 return chunk ? TRUE : FALSE;
5533 }
5535 static bool
5536 stage_update(struct view *view, struct line *line)
5537 {
5538 struct line *chunk = NULL;
5540 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5541 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5543 if (chunk) {
5544 if (!stage_apply_chunk(view, chunk, FALSE)) {
5545 report("Failed to apply chunk");
5546 return FALSE;
5547 }
5549 } else if (!stage_status.status) {
5550 view = VIEW(REQ_VIEW_STATUS);
5552 for (line = view->line; line < view->line + view->lines; line++)
5553 if (line->type == stage_line_type)
5554 break;
5556 if (!status_update_files(view, line + 1)) {
5557 report("Failed to update files");
5558 return FALSE;
5559 }
5561 } else if (!status_update_file(&stage_status, stage_line_type)) {
5562 report("Failed to update file");
5563 return FALSE;
5564 }
5566 return TRUE;
5567 }
5569 static bool
5570 stage_revert(struct view *view, struct line *line)
5571 {
5572 struct line *chunk = NULL;
5574 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5575 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5577 if (chunk) {
5578 if (!prompt_yesno("Are you sure you want to revert changes?"))
5579 return FALSE;
5581 if (!stage_apply_chunk(view, chunk, TRUE)) {
5582 report("Failed to revert chunk");
5583 return FALSE;
5584 }
5585 return TRUE;
5587 } else {
5588 return status_revert(stage_status.status ? &stage_status : NULL,
5589 stage_line_type, FALSE);
5590 }
5591 }
5594 static void
5595 stage_next(struct view *view, struct line *line)
5596 {
5597 int i;
5599 if (!stage_chunks) {
5600 for (line = view->line; line < view->line + view->lines; line++) {
5601 if (line->type != LINE_DIFF_CHUNK)
5602 continue;
5604 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5605 report("Allocation failure");
5606 return;
5607 }
5609 stage_chunk[stage_chunks++] = line - view->line;
5610 }
5611 }
5613 for (i = 0; i < stage_chunks; i++) {
5614 if (stage_chunk[i] > view->lineno) {
5615 do_scroll_view(view, stage_chunk[i] - view->lineno);
5616 report("Chunk %d of %d", i + 1, stage_chunks);
5617 return;
5618 }
5619 }
5621 report("No next chunk found");
5622 }
5624 static enum request
5625 stage_request(struct view *view, enum request request, struct line *line)
5626 {
5627 switch (request) {
5628 case REQ_STATUS_UPDATE:
5629 if (!stage_update(view, line))
5630 return REQ_NONE;
5631 break;
5633 case REQ_STATUS_REVERT:
5634 if (!stage_revert(view, line))
5635 return REQ_NONE;
5636 break;
5638 case REQ_STAGE_NEXT:
5639 if (stage_line_type == LINE_STAT_UNTRACKED) {
5640 report("File is untracked; press %s to add",
5641 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5642 return REQ_NONE;
5643 }
5644 stage_next(view, line);
5645 return REQ_NONE;
5647 case REQ_EDIT:
5648 if (!stage_status.new.name[0])
5649 return request;
5650 if (stage_status.status == 'D') {
5651 report("File has been deleted.");
5652 return REQ_NONE;
5653 }
5655 open_editor(stage_status.new.name);
5656 break;
5658 case REQ_REFRESH:
5659 /* Reload everything ... */
5660 break;
5662 case REQ_VIEW_BLAME:
5663 if (stage_status.new.name[0]) {
5664 string_copy(opt_file, stage_status.new.name);
5665 opt_ref[0] = 0;
5666 }
5667 return request;
5669 case REQ_ENTER:
5670 return pager_request(view, request, line);
5672 default:
5673 return request;
5674 }
5676 refresh_view(view->parent);
5678 /* Check whether the staged entry still exists, and close the
5679 * stage view if it doesn't. */
5680 if (!status_exists(&stage_status, stage_line_type)) {
5681 status_restore(VIEW(REQ_VIEW_STATUS));
5682 return REQ_VIEW_CLOSE;
5683 }
5685 refresh_view(view);
5687 return REQ_NONE;
5688 }
5690 static struct view_ops stage_ops = {
5691 "line",
5692 view_open,
5693 pager_read,
5694 pager_draw,
5695 stage_request,
5696 pager_grep,
5697 pager_select,
5698 };
5701 /*
5702 * Revision graph
5703 */
5705 static const enum line_type graph_colors[] = {
5706 LINE_GRAPH_LINE_0,
5707 LINE_GRAPH_LINE_1,
5708 LINE_GRAPH_LINE_2,
5709 LINE_GRAPH_LINE_3,
5710 LINE_GRAPH_LINE_4,
5711 LINE_GRAPH_LINE_5,
5712 LINE_GRAPH_LINE_6,
5713 };
5715 static enum line_type get_graph_color(struct graph_symbol *symbol)
5716 {
5717 if (symbol->commit)
5718 return LINE_GRAPH_COMMIT;
5719 assert(symbol->color < ARRAY_SIZE(graph_colors));
5720 return graph_colors[symbol->color];
5721 }
5723 static bool
5724 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5725 {
5726 const char *chars = graph_symbol_to_utf8(symbol);
5728 return draw_text(view, color, chars + !!first);
5729 }
5731 static bool
5732 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5733 {
5734 const char *chars = graph_symbol_to_ascii(symbol);
5736 return draw_text(view, color, chars + !!first);
5737 }
5739 static bool
5740 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5741 {
5742 const chtype *chars = graph_symbol_to_chtype(symbol);
5744 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5745 }
5747 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5749 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5750 {
5751 static const draw_graph_fn fns[] = {
5752 draw_graph_ascii,
5753 draw_graph_chtype,
5754 draw_graph_utf8
5755 };
5756 draw_graph_fn fn = fns[opt_line_graphics];
5757 int i;
5759 for (i = 0; i < canvas->size; i++) {
5760 struct graph_symbol *symbol = &canvas->symbols[i];
5761 enum line_type color = get_graph_color(symbol);
5763 if (fn(view, symbol, color, i == 0))
5764 return TRUE;
5765 }
5767 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5768 }
5770 /*
5771 * Main view backend
5772 */
5774 struct commit {
5775 char id[SIZEOF_REV]; /* SHA1 ID. */
5776 char title[128]; /* First line of the commit message. */
5777 const char *author; /* Author of the commit. */
5778 struct time time; /* Date from the author ident. */
5779 struct ref_list *refs; /* Repository references. */
5780 struct graph_canvas graph; /* Ancestry chain graphics. */
5781 };
5783 static bool
5784 main_open(struct view *view, enum open_flags flags)
5785 {
5786 static const char *main_argv[] = {
5787 "git", "log", "--no-color", "--pretty=raw", "--parents",
5788 "--topo-order", "%(diffargs)", "%(revargs)",
5789 "--", "%(fileargs)", NULL
5790 };
5792 return begin_update(view, NULL, main_argv, flags);
5793 }
5795 static bool
5796 main_draw(struct view *view, struct line *line, unsigned int lineno)
5797 {
5798 struct commit *commit = line->data;
5800 if (!commit->author)
5801 return FALSE;
5803 if (draw_date(view, &commit->time))
5804 return TRUE;
5806 if (draw_author(view, commit->author))
5807 return TRUE;
5809 if (opt_rev_graph && draw_graph(view, &commit->graph))
5810 return TRUE;
5812 if (draw_refs(view, commit->refs))
5813 return TRUE;
5815 draw_text(view, LINE_DEFAULT, commit->title);
5816 return TRUE;
5817 }
5819 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5820 static bool
5821 main_read(struct view *view, char *line)
5822 {
5823 static struct graph graph;
5824 enum line_type type;
5825 struct commit *commit;
5827 if (!line) {
5828 if (!view->lines && !view->prev)
5829 die("No revisions match the given arguments.");
5830 if (view->lines > 0) {
5831 commit = view->line[view->lines - 1].data;
5832 view->line[view->lines - 1].dirty = 1;
5833 if (!commit->author) {
5834 view->lines--;
5835 free(commit);
5836 }
5837 }
5839 done_graph(&graph);
5840 return TRUE;
5841 }
5843 type = get_line_type(line);
5844 if (type == LINE_COMMIT) {
5845 bool is_boundary;
5847 commit = calloc(1, sizeof(struct commit));
5848 if (!commit)
5849 return FALSE;
5851 line += STRING_SIZE("commit ");
5852 is_boundary = *line == '-';
5853 if (is_boundary)
5854 line++;
5856 string_copy_rev(commit->id, line);
5857 commit->refs = get_ref_list(commit->id);
5858 add_line_data(view, commit, LINE_MAIN_COMMIT);
5859 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5860 return TRUE;
5861 }
5863 if (!view->lines)
5864 return TRUE;
5865 commit = view->line[view->lines - 1].data;
5867 switch (type) {
5868 case LINE_PARENT:
5869 if (!graph.has_parents)
5870 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5871 break;
5873 case LINE_AUTHOR:
5874 parse_author_line(line + STRING_SIZE("author "),
5875 &commit->author, &commit->time);
5876 graph_render_parents(&graph);
5877 break;
5879 default:
5880 /* Fill in the commit title if it has not already been set. */
5881 if (commit->title[0])
5882 break;
5884 /* Require titles to start with a non-space character at the
5885 * offset used by git log. */
5886 if (strncmp(line, " ", 4))
5887 break;
5888 line += 4;
5889 /* Well, if the title starts with a whitespace character,
5890 * try to be forgiving. Otherwise we end up with no title. */
5891 while (isspace(*line))
5892 line++;
5893 if (*line == '\0')
5894 break;
5895 /* FIXME: More graceful handling of titles; append "..." to
5896 * shortened titles, etc. */
5898 string_expand(commit->title, sizeof(commit->title), line, 1);
5899 view->line[view->lines - 1].dirty = 1;
5900 }
5902 return TRUE;
5903 }
5905 static enum request
5906 main_request(struct view *view, enum request request, struct line *line)
5907 {
5908 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5910 switch (request) {
5911 case REQ_ENTER:
5912 if (view_is_displayed(view) && display[0] != view)
5913 maximize_view(view, TRUE);
5914 open_view(view, REQ_VIEW_DIFF, flags);
5915 break;
5916 case REQ_REFRESH:
5917 load_refs();
5918 refresh_view(view);
5919 break;
5920 default:
5921 return request;
5922 }
5924 return REQ_NONE;
5925 }
5927 static bool
5928 grep_refs(struct ref_list *list, regex_t *regex)
5929 {
5930 regmatch_t pmatch;
5931 size_t i;
5933 if (!opt_show_refs || !list)
5934 return FALSE;
5936 for (i = 0; i < list->size; i++) {
5937 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5938 return TRUE;
5939 }
5941 return FALSE;
5942 }
5944 static bool
5945 main_grep(struct view *view, struct line *line)
5946 {
5947 struct commit *commit = line->data;
5948 const char *text[] = {
5949 commit->title,
5950 mkauthor(commit->author, opt_author_cols, opt_author),
5951 mkdate(&commit->time, opt_date),
5952 NULL
5953 };
5955 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5956 }
5958 static void
5959 main_select(struct view *view, struct line *line)
5960 {
5961 struct commit *commit = line->data;
5963 string_copy_rev(view->ref, commit->id);
5964 string_copy_rev(ref_commit, view->ref);
5965 }
5967 static struct view_ops main_ops = {
5968 "commit",
5969 main_open,
5970 main_read,
5971 main_draw,
5972 main_request,
5973 main_grep,
5974 main_select,
5975 };
5978 /*
5979 * Status management
5980 */
5982 /* Whether or not the curses interface has been initialized. */
5983 static bool cursed = FALSE;
5985 /* Terminal hacks and workarounds. */
5986 static bool use_scroll_redrawwin;
5987 static bool use_scroll_status_wclear;
5989 /* The status window is used for polling keystrokes. */
5990 static WINDOW *status_win;
5992 /* Reading from the prompt? */
5993 static bool input_mode = FALSE;
5995 static bool status_empty = FALSE;
5997 /* Update status and title window. */
5998 static void
5999 report(const char *msg, ...)
6000 {
6001 struct view *view = display[current_view];
6003 if (input_mode)
6004 return;
6006 if (!view) {
6007 char buf[SIZEOF_STR];
6008 va_list args;
6010 va_start(args, msg);
6011 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6012 buf[sizeof(buf) - 1] = 0;
6013 buf[sizeof(buf) - 2] = '.';
6014 buf[sizeof(buf) - 3] = '.';
6015 buf[sizeof(buf) - 4] = '.';
6016 }
6017 va_end(args);
6018 die("%s", buf);
6019 }
6021 if (!status_empty || *msg) {
6022 va_list args;
6024 va_start(args, msg);
6026 wmove(status_win, 0, 0);
6027 if (view->has_scrolled && use_scroll_status_wclear)
6028 wclear(status_win);
6029 if (*msg) {
6030 vwprintw(status_win, msg, args);
6031 status_empty = FALSE;
6032 } else {
6033 status_empty = TRUE;
6034 }
6035 wclrtoeol(status_win);
6036 wnoutrefresh(status_win);
6038 va_end(args);
6039 }
6041 update_view_title(view);
6042 }
6044 static void
6045 init_display(void)
6046 {
6047 const char *term;
6048 int x, y;
6050 /* Initialize the curses library */
6051 if (isatty(STDIN_FILENO)) {
6052 cursed = !!initscr();
6053 opt_tty = stdin;
6054 } else {
6055 /* Leave stdin and stdout alone when acting as a pager. */
6056 opt_tty = fopen("/dev/tty", "r+");
6057 if (!opt_tty)
6058 die("Failed to open /dev/tty");
6059 cursed = !!newterm(NULL, opt_tty, opt_tty);
6060 }
6062 if (!cursed)
6063 die("Failed to initialize curses");
6065 nonl(); /* Disable conversion and detect newlines from input. */
6066 cbreak(); /* Take input chars one at a time, no wait for \n */
6067 noecho(); /* Don't echo input */
6068 leaveok(stdscr, FALSE);
6070 if (has_colors())
6071 init_colors();
6073 getmaxyx(stdscr, y, x);
6074 status_win = newwin(1, x, y - 1, 0);
6075 if (!status_win)
6076 die("Failed to create status window");
6078 /* Enable keyboard mapping */
6079 keypad(status_win, TRUE);
6080 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6082 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6083 set_tabsize(opt_tab_size);
6084 #else
6085 TABSIZE = opt_tab_size;
6086 #endif
6088 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6089 if (term && !strcmp(term, "gnome-terminal")) {
6090 /* In the gnome-terminal-emulator, the message from
6091 * scrolling up one line when impossible followed by
6092 * scrolling down one line causes corruption of the
6093 * status line. This is fixed by calling wclear. */
6094 use_scroll_status_wclear = TRUE;
6095 use_scroll_redrawwin = FALSE;
6097 } else if (term && !strcmp(term, "xrvt-xpm")) {
6098 /* No problems with full optimizations in xrvt-(unicode)
6099 * and aterm. */
6100 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6102 } else {
6103 /* When scrolling in (u)xterm the last line in the
6104 * scrolling direction will update slowly. */
6105 use_scroll_redrawwin = TRUE;
6106 use_scroll_status_wclear = FALSE;
6107 }
6108 }
6110 static int
6111 get_input(int prompt_position)
6112 {
6113 struct view *view;
6114 int i, key, cursor_y, cursor_x;
6116 if (prompt_position)
6117 input_mode = TRUE;
6119 while (TRUE) {
6120 bool loading = FALSE;
6122 foreach_view (view, i) {
6123 update_view(view);
6124 if (view_is_displayed(view) && view->has_scrolled &&
6125 use_scroll_redrawwin)
6126 redrawwin(view->win);
6127 view->has_scrolled = FALSE;
6128 if (view->pipe)
6129 loading = TRUE;
6130 }
6132 /* Update the cursor position. */
6133 if (prompt_position) {
6134 getbegyx(status_win, cursor_y, cursor_x);
6135 cursor_x = prompt_position;
6136 } else {
6137 view = display[current_view];
6138 getbegyx(view->win, cursor_y, cursor_x);
6139 cursor_x = view->width - 1;
6140 cursor_y += view->lineno - view->offset;
6141 }
6142 setsyx(cursor_y, cursor_x);
6144 /* Refresh, accept single keystroke of input */
6145 doupdate();
6146 nodelay(status_win, loading);
6147 key = wgetch(status_win);
6149 /* wgetch() with nodelay() enabled returns ERR when
6150 * there's no input. */
6151 if (key == ERR) {
6153 } else if (key == KEY_RESIZE) {
6154 int height, width;
6156 getmaxyx(stdscr, height, width);
6158 wresize(status_win, 1, width);
6159 mvwin(status_win, height - 1, 0);
6160 wnoutrefresh(status_win);
6161 resize_display();
6162 redraw_display(TRUE);
6164 } else {
6165 input_mode = FALSE;
6166 return key;
6167 }
6168 }
6169 }
6171 static char *
6172 prompt_input(const char *prompt, input_handler handler, void *data)
6173 {
6174 enum input_status status = INPUT_OK;
6175 static char buf[SIZEOF_STR];
6176 size_t pos = 0;
6178 buf[pos] = 0;
6180 while (status == INPUT_OK || status == INPUT_SKIP) {
6181 int key;
6183 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6184 wclrtoeol(status_win);
6186 key = get_input(pos + 1);
6187 switch (key) {
6188 case KEY_RETURN:
6189 case KEY_ENTER:
6190 case '\n':
6191 status = pos ? INPUT_STOP : INPUT_CANCEL;
6192 break;
6194 case KEY_BACKSPACE:
6195 if (pos > 0)
6196 buf[--pos] = 0;
6197 else
6198 status = INPUT_CANCEL;
6199 break;
6201 case KEY_ESC:
6202 status = INPUT_CANCEL;
6203 break;
6205 default:
6206 if (pos >= sizeof(buf)) {
6207 report("Input string too long");
6208 return NULL;
6209 }
6211 status = handler(data, buf, key);
6212 if (status == INPUT_OK)
6213 buf[pos++] = (char) key;
6214 }
6215 }
6217 /* Clear the status window */
6218 status_empty = FALSE;
6219 report("");
6221 if (status == INPUT_CANCEL)
6222 return NULL;
6224 buf[pos++] = 0;
6226 return buf;
6227 }
6229 static enum input_status
6230 prompt_yesno_handler(void *data, char *buf, int c)
6231 {
6232 if (c == 'y' || c == 'Y')
6233 return INPUT_STOP;
6234 if (c == 'n' || c == 'N')
6235 return INPUT_CANCEL;
6236 return INPUT_SKIP;
6237 }
6239 static bool
6240 prompt_yesno(const char *prompt)
6241 {
6242 char prompt2[SIZEOF_STR];
6244 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6245 return FALSE;
6247 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6248 }
6250 static enum input_status
6251 read_prompt_handler(void *data, char *buf, int c)
6252 {
6253 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6254 }
6256 static char *
6257 read_prompt(const char *prompt)
6258 {
6259 return prompt_input(prompt, read_prompt_handler, NULL);
6260 }
6262 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6263 {
6264 enum input_status status = INPUT_OK;
6265 int size = 0;
6267 while (items[size].text)
6268 size++;
6270 while (status == INPUT_OK) {
6271 const struct menu_item *item = &items[*selected];
6272 int key;
6273 int i;
6275 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6276 prompt, *selected + 1, size);
6277 if (item->hotkey)
6278 wprintw(status_win, "[%c] ", (char) item->hotkey);
6279 wprintw(status_win, "%s", item->text);
6280 wclrtoeol(status_win);
6282 key = get_input(COLS - 1);
6283 switch (key) {
6284 case KEY_RETURN:
6285 case KEY_ENTER:
6286 case '\n':
6287 status = INPUT_STOP;
6288 break;
6290 case KEY_LEFT:
6291 case KEY_UP:
6292 *selected = *selected - 1;
6293 if (*selected < 0)
6294 *selected = size - 1;
6295 break;
6297 case KEY_RIGHT:
6298 case KEY_DOWN:
6299 *selected = (*selected + 1) % size;
6300 break;
6302 case KEY_ESC:
6303 status = INPUT_CANCEL;
6304 break;
6306 default:
6307 for (i = 0; items[i].text; i++)
6308 if (items[i].hotkey == key) {
6309 *selected = i;
6310 status = INPUT_STOP;
6311 break;
6312 }
6313 }
6314 }
6316 /* Clear the status window */
6317 status_empty = FALSE;
6318 report("");
6320 return status != INPUT_CANCEL;
6321 }
6323 /*
6324 * Repository properties
6325 */
6327 static struct ref **refs = NULL;
6328 static size_t refs_size = 0;
6329 static struct ref *refs_head = NULL;
6331 static struct ref_list **ref_lists = NULL;
6332 static size_t ref_lists_size = 0;
6334 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6335 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6336 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6338 static int
6339 compare_refs(const void *ref1_, const void *ref2_)
6340 {
6341 const struct ref *ref1 = *(const struct ref **)ref1_;
6342 const struct ref *ref2 = *(const struct ref **)ref2_;
6344 if (ref1->tag != ref2->tag)
6345 return ref2->tag - ref1->tag;
6346 if (ref1->ltag != ref2->ltag)
6347 return ref2->ltag - ref2->ltag;
6348 if (ref1->head != ref2->head)
6349 return ref2->head - ref1->head;
6350 if (ref1->tracked != ref2->tracked)
6351 return ref2->tracked - ref1->tracked;
6352 if (ref1->remote != ref2->remote)
6353 return ref2->remote - ref1->remote;
6354 return strcmp(ref1->name, ref2->name);
6355 }
6357 static void
6358 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6359 {
6360 size_t i;
6362 for (i = 0; i < refs_size; i++)
6363 if (!visitor(data, refs[i]))
6364 break;
6365 }
6367 static struct ref *
6368 get_ref_head()
6369 {
6370 return refs_head;
6371 }
6373 static struct ref_list *
6374 get_ref_list(const char *id)
6375 {
6376 struct ref_list *list;
6377 size_t i;
6379 for (i = 0; i < ref_lists_size; i++)
6380 if (!strcmp(id, ref_lists[i]->id))
6381 return ref_lists[i];
6383 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6384 return NULL;
6385 list = calloc(1, sizeof(*list));
6386 if (!list)
6387 return NULL;
6389 for (i = 0; i < refs_size; i++) {
6390 if (!strcmp(id, refs[i]->id) &&
6391 realloc_refs_list(&list->refs, list->size, 1))
6392 list->refs[list->size++] = refs[i];
6393 }
6395 if (!list->refs) {
6396 free(list);
6397 return NULL;
6398 }
6400 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6401 ref_lists[ref_lists_size++] = list;
6402 return list;
6403 }
6405 static int
6406 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6407 {
6408 struct ref *ref = NULL;
6409 bool tag = FALSE;
6410 bool ltag = FALSE;
6411 bool remote = FALSE;
6412 bool tracked = FALSE;
6413 bool head = FALSE;
6414 int from = 0, to = refs_size - 1;
6416 if (!prefixcmp(name, "refs/tags/")) {
6417 if (!suffixcmp(name, namelen, "^{}")) {
6418 namelen -= 3;
6419 name[namelen] = 0;
6420 } else {
6421 ltag = TRUE;
6422 }
6424 tag = TRUE;
6425 namelen -= STRING_SIZE("refs/tags/");
6426 name += STRING_SIZE("refs/tags/");
6428 } else if (!prefixcmp(name, "refs/remotes/")) {
6429 remote = TRUE;
6430 namelen -= STRING_SIZE("refs/remotes/");
6431 name += STRING_SIZE("refs/remotes/");
6432 tracked = !strcmp(opt_remote, name);
6434 } else if (!prefixcmp(name, "refs/heads/")) {
6435 namelen -= STRING_SIZE("refs/heads/");
6436 name += STRING_SIZE("refs/heads/");
6437 if (!strncmp(opt_head, name, namelen))
6438 return OK;
6440 } else if (!strcmp(name, "HEAD")) {
6441 head = TRUE;
6442 if (*opt_head) {
6443 namelen = strlen(opt_head);
6444 name = opt_head;
6445 }
6446 }
6448 /* If we are reloading or it's an annotated tag, replace the
6449 * previous SHA1 with the resolved commit id; relies on the fact
6450 * git-ls-remote lists the commit id of an annotated tag right
6451 * before the commit id it points to. */
6452 while (from <= to) {
6453 size_t pos = (to + from) / 2;
6454 int cmp = strcmp(name, refs[pos]->name);
6456 if (!cmp) {
6457 ref = refs[pos];
6458 break;
6459 }
6461 if (cmp < 0)
6462 to = pos - 1;
6463 else
6464 from = pos + 1;
6465 }
6467 if (!ref) {
6468 if (!realloc_refs(&refs, refs_size, 1))
6469 return ERR;
6470 ref = calloc(1, sizeof(*ref) + namelen);
6471 if (!ref)
6472 return ERR;
6473 memmove(refs + from + 1, refs + from,
6474 (refs_size - from) * sizeof(*refs));
6475 refs[from] = ref;
6476 strncpy(ref->name, name, namelen);
6477 refs_size++;
6478 }
6480 ref->head = head;
6481 ref->tag = tag;
6482 ref->ltag = ltag;
6483 ref->remote = remote;
6484 ref->tracked = tracked;
6485 string_copy_rev(ref->id, id);
6487 if (head)
6488 refs_head = ref;
6489 return OK;
6490 }
6492 static int
6493 load_refs(void)
6494 {
6495 const char *head_argv[] = {
6496 "git", "symbolic-ref", "HEAD", NULL
6497 };
6498 static const char *ls_remote_argv[SIZEOF_ARG] = {
6499 "git", "ls-remote", opt_git_dir, NULL
6500 };
6501 static bool init = FALSE;
6502 size_t i;
6504 if (!init) {
6505 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6506 die("TIG_LS_REMOTE contains too many arguments");
6507 init = TRUE;
6508 }
6510 if (!*opt_git_dir)
6511 return OK;
6513 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6514 !prefixcmp(opt_head, "refs/heads/")) {
6515 char *offset = opt_head + STRING_SIZE("refs/heads/");
6517 memmove(opt_head, offset, strlen(offset) + 1);
6518 }
6520 refs_head = NULL;
6521 for (i = 0; i < refs_size; i++)
6522 refs[i]->id[0] = 0;
6524 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6525 return ERR;
6527 /* Update the ref lists to reflect changes. */
6528 for (i = 0; i < ref_lists_size; i++) {
6529 struct ref_list *list = ref_lists[i];
6530 size_t old, new;
6532 for (old = new = 0; old < list->size; old++)
6533 if (!strcmp(list->id, list->refs[old]->id))
6534 list->refs[new++] = list->refs[old];
6535 list->size = new;
6536 }
6538 return OK;
6539 }
6541 static void
6542 set_remote_branch(const char *name, const char *value, size_t valuelen)
6543 {
6544 if (!strcmp(name, ".remote")) {
6545 string_ncopy(opt_remote, value, valuelen);
6547 } else if (*opt_remote && !strcmp(name, ".merge")) {
6548 size_t from = strlen(opt_remote);
6550 if (!prefixcmp(value, "refs/heads/"))
6551 value += STRING_SIZE("refs/heads/");
6553 if (!string_format_from(opt_remote, &from, "/%s", value))
6554 opt_remote[0] = 0;
6555 }
6556 }
6558 static void
6559 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6560 {
6561 const char *argv[SIZEOF_ARG] = { name, "=" };
6562 int argc = 1 + (cmd == option_set_command);
6563 enum option_code error;
6565 if (!argv_from_string(argv, &argc, value))
6566 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6567 else
6568 error = cmd(argc, argv);
6570 if (error != OPT_OK)
6571 warn("Option 'tig.%s': %s", name, option_errors[error]);
6572 }
6574 static bool
6575 set_environment_variable(const char *name, const char *value)
6576 {
6577 size_t len = strlen(name) + 1 + strlen(value) + 1;
6578 char *env = malloc(len);
6580 if (env &&
6581 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6582 putenv(env) == 0)
6583 return TRUE;
6584 free(env);
6585 return FALSE;
6586 }
6588 static void
6589 set_work_tree(const char *value)
6590 {
6591 char cwd[SIZEOF_STR];
6593 if (!getcwd(cwd, sizeof(cwd)))
6594 die("Failed to get cwd path: %s", strerror(errno));
6595 if (chdir(opt_git_dir) < 0)
6596 die("Failed to chdir(%s): %s", strerror(errno));
6597 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6598 die("Failed to get git path: %s", strerror(errno));
6599 if (chdir(cwd) < 0)
6600 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6601 if (chdir(value) < 0)
6602 die("Failed to chdir(%s): %s", value, strerror(errno));
6603 if (!getcwd(cwd, sizeof(cwd)))
6604 die("Failed to get cwd path: %s", strerror(errno));
6605 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6606 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6607 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6608 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6609 opt_is_inside_work_tree = TRUE;
6610 }
6612 static int
6613 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6614 {
6615 if (!strcmp(name, "i18n.commitencoding"))
6616 string_ncopy(opt_encoding, value, valuelen);
6618 else if (!strcmp(name, "core.editor"))
6619 string_ncopy(opt_editor, value, valuelen);
6621 else if (!strcmp(name, "core.worktree"))
6622 set_work_tree(value);
6624 else if (!prefixcmp(name, "tig.color."))
6625 set_repo_config_option(name + 10, value, option_color_command);
6627 else if (!prefixcmp(name, "tig.bind."))
6628 set_repo_config_option(name + 9, value, option_bind_command);
6630 else if (!prefixcmp(name, "tig."))
6631 set_repo_config_option(name + 4, value, option_set_command);
6633 else if (*opt_head && !prefixcmp(name, "branch.") &&
6634 !strncmp(name + 7, opt_head, strlen(opt_head)))
6635 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6637 return OK;
6638 }
6640 static int
6641 load_git_config(void)
6642 {
6643 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6645 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6646 }
6648 static int
6649 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6650 {
6651 if (!opt_git_dir[0]) {
6652 string_ncopy(opt_git_dir, name, namelen);
6654 } else if (opt_is_inside_work_tree == -1) {
6655 /* This can be 3 different values depending on the
6656 * version of git being used. If git-rev-parse does not
6657 * understand --is-inside-work-tree it will simply echo
6658 * the option else either "true" or "false" is printed.
6659 * Default to true for the unknown case. */
6660 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6662 } else if (*name == '.') {
6663 string_ncopy(opt_cdup, name, namelen);
6665 } else {
6666 string_ncopy(opt_prefix, name, namelen);
6667 }
6669 return OK;
6670 }
6672 static int
6673 load_repo_info(void)
6674 {
6675 const char *rev_parse_argv[] = {
6676 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6677 "--show-cdup", "--show-prefix", NULL
6678 };
6680 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6681 }
6684 /*
6685 * Main
6686 */
6688 static const char usage[] =
6689 "tig " TIG_VERSION " (" __DATE__ ")\n"
6690 "\n"
6691 "Usage: tig [options] [revs] [--] [paths]\n"
6692 " or: tig show [options] [revs] [--] [paths]\n"
6693 " or: tig blame [options] [rev] [--] path\n"
6694 " or: tig status\n"
6695 " or: tig < [git command output]\n"
6696 "\n"
6697 "Options:\n"
6698 " -v, --version Show version and exit\n"
6699 " -h, --help Show help message and exit";
6701 static void __NORETURN
6702 quit(int sig)
6703 {
6704 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6705 if (cursed)
6706 endwin();
6707 exit(0);
6708 }
6710 static void __NORETURN
6711 die(const char *err, ...)
6712 {
6713 va_list args;
6715 endwin();
6717 va_start(args, err);
6718 fputs("tig: ", stderr);
6719 vfprintf(stderr, err, args);
6720 fputs("\n", stderr);
6721 va_end(args);
6723 exit(1);
6724 }
6726 static void
6727 warn(const char *msg, ...)
6728 {
6729 va_list args;
6731 va_start(args, msg);
6732 fputs("tig warning: ", stderr);
6733 vfprintf(stderr, msg, args);
6734 fputs("\n", stderr);
6735 va_end(args);
6736 }
6738 static int
6739 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6740 {
6741 const char ***filter_args = data;
6743 return argv_append(filter_args, name) ? OK : ERR;
6744 }
6746 static void
6747 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6748 {
6749 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6750 const char **all_argv = NULL;
6752 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6753 !argv_append_array(&all_argv, argv) ||
6754 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6755 die("Failed to split arguments");
6756 argv_free(all_argv);
6757 free(all_argv);
6758 }
6760 static void
6761 filter_options(const char *argv[])
6762 {
6763 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6764 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6765 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6766 }
6768 static enum request
6769 parse_options(int argc, const char *argv[])
6770 {
6771 enum request request = REQ_VIEW_MAIN;
6772 const char *subcommand;
6773 bool seen_dashdash = FALSE;
6774 const char **filter_argv = NULL;
6775 int i;
6777 if (!isatty(STDIN_FILENO))
6778 return REQ_VIEW_PAGER;
6780 if (argc <= 1)
6781 return REQ_VIEW_MAIN;
6783 subcommand = argv[1];
6784 if (!strcmp(subcommand, "status")) {
6785 if (argc > 2)
6786 warn("ignoring arguments after `%s'", subcommand);
6787 return REQ_VIEW_STATUS;
6789 } else if (!strcmp(subcommand, "blame")) {
6790 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6791 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6792 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6794 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6795 die("invalid number of options to blame\n\n%s", usage);
6797 if (opt_rev_argv) {
6798 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6799 }
6801 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6802 return REQ_VIEW_BLAME;
6804 } else if (!strcmp(subcommand, "show")) {
6805 request = REQ_VIEW_DIFF;
6807 } else {
6808 subcommand = NULL;
6809 }
6811 for (i = 1 + !!subcommand; i < argc; i++) {
6812 const char *opt = argv[i];
6814 if (seen_dashdash) {
6815 argv_append(&opt_file_argv, opt);
6816 continue;
6818 } else if (!strcmp(opt, "--")) {
6819 seen_dashdash = TRUE;
6820 continue;
6822 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6823 printf("tig version %s\n", TIG_VERSION);
6824 quit(0);
6826 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6827 printf("%s\n", usage);
6828 quit(0);
6830 } else if (!strcmp(opt, "--all")) {
6831 argv_append(&opt_rev_argv, opt);
6832 continue;
6833 }
6835 if (!argv_append(&filter_argv, opt))
6836 die("command too long");
6837 }
6839 if (filter_argv)
6840 filter_options(filter_argv);
6842 return request;
6843 }
6845 int
6846 main(int argc, const char *argv[])
6847 {
6848 const char *codeset = "UTF-8";
6849 enum request request = parse_options(argc, argv);
6850 struct view *view;
6852 signal(SIGINT, quit);
6853 signal(SIGPIPE, SIG_IGN);
6855 if (setlocale(LC_ALL, "")) {
6856 codeset = nl_langinfo(CODESET);
6857 }
6859 if (load_repo_info() == ERR)
6860 die("Failed to load repo info.");
6862 if (load_options() == ERR)
6863 die("Failed to load user config.");
6865 if (load_git_config() == ERR)
6866 die("Failed to load repo config.");
6868 /* Require a git repository unless when running in pager mode. */
6869 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6870 die("Not a git repository");
6872 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6873 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6874 if (opt_iconv_in == ICONV_NONE)
6875 die("Failed to initialize character set conversion");
6876 }
6878 if (codeset && strcmp(codeset, "UTF-8")) {
6879 opt_iconv_out = iconv_open(codeset, "UTF-8");
6880 if (opt_iconv_out == ICONV_NONE)
6881 die("Failed to initialize character set conversion");
6882 }
6884 if (load_refs() == ERR)
6885 die("Failed to load refs.");
6887 init_display();
6889 while (view_driver(display[current_view], request)) {
6890 int key = get_input(0);
6892 view = display[current_view];
6893 request = get_keybinding(view->keymap, key);
6895 /* Some low-level request handling. This keeps access to
6896 * status_win restricted. */
6897 switch (request) {
6898 case REQ_NONE:
6899 report("Unknown key, press %s for help",
6900 get_key(view->keymap, REQ_VIEW_HELP));
6901 break;
6902 case REQ_PROMPT:
6903 {
6904 char *cmd = read_prompt(":");
6906 if (cmd && isdigit(*cmd)) {
6907 int lineno = view->lineno + 1;
6909 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6910 select_view_line(view, lineno - 1);
6911 report("");
6912 } else {
6913 report("Unable to parse '%s' as a line number", cmd);
6914 }
6916 } else if (cmd) {
6917 struct view *next = VIEW(REQ_VIEW_PAGER);
6918 const char *argv[SIZEOF_ARG] = { "git" };
6919 int argc = 1;
6921 /* When running random commands, initially show the
6922 * command in the title. However, it maybe later be
6923 * overwritten if a commit line is selected. */
6924 string_ncopy(next->ref, cmd, strlen(cmd));
6926 if (!argv_from_string(argv, &argc, cmd)) {
6927 report("Too many arguments");
6928 } else {
6929 open_argv(view, next, argv, NULL, OPEN_DEFAULT);
6930 }
6931 }
6933 request = REQ_NONE;
6934 break;
6935 }
6936 case REQ_SEARCH:
6937 case REQ_SEARCH_BACK:
6938 {
6939 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6940 char *search = read_prompt(prompt);
6942 if (search)
6943 string_ncopy(opt_search, search, strlen(search));
6944 else if (*opt_search)
6945 request = request == REQ_SEARCH ?
6946 REQ_FIND_NEXT :
6947 REQ_FIND_PREV;
6948 else
6949 request = REQ_NONE;
6950 break;
6951 }
6952 default:
6953 break;
6954 }
6955 }
6957 quit(0);
6959 return 0;
6960 }