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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", path, NULL
4129 };
4131 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4132 !begin_update(view, opt_cdup, blame_cat_file_argv, flags))
4133 return FALSE;
4134 }
4136 /* First pass: remove multiple references to the same commit. */
4137 for (i = 0; i < view->lines; i++) {
4138 struct blame *blame = view->line[i].data;
4140 if (blame->commit && blame->commit->id[0])
4141 blame->commit->id[0] = 0;
4142 else
4143 blame->commit = NULL;
4144 }
4146 /* Second pass: free existing references. */
4147 for (i = 0; i < view->lines; i++) {
4148 struct blame *blame = view->line[i].data;
4150 if (blame->commit)
4151 free(blame->commit);
4152 }
4154 string_format(view->vid, "%s:%s", opt_ref, opt_file);
4155 string_format(view->ref, "%s ...", opt_file);
4157 return TRUE;
4158 }
4160 static struct blame_commit *
4161 get_blame_commit(struct view *view, const char *id)
4162 {
4163 size_t i;
4165 for (i = 0; i < view->lines; i++) {
4166 struct blame *blame = view->line[i].data;
4168 if (!blame->commit)
4169 continue;
4171 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4172 return blame->commit;
4173 }
4175 {
4176 struct blame_commit *commit = calloc(1, sizeof(*commit));
4178 if (commit)
4179 string_ncopy(commit->id, id, SIZEOF_REV);
4180 return commit;
4181 }
4182 }
4184 static bool
4185 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4186 {
4187 const char *pos = *posref;
4189 *posref = NULL;
4190 pos = strchr(pos + 1, ' ');
4191 if (!pos || !isdigit(pos[1]))
4192 return FALSE;
4193 *number = atoi(pos + 1);
4194 if (*number < min || *number > max)
4195 return FALSE;
4197 *posref = pos;
4198 return TRUE;
4199 }
4201 static struct blame_commit *
4202 parse_blame_commit(struct view *view, const char *text, int *blamed)
4203 {
4204 struct blame_commit *commit;
4205 struct blame *blame;
4206 const char *pos = text + SIZEOF_REV - 2;
4207 size_t orig_lineno = 0;
4208 size_t lineno;
4209 size_t group;
4211 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4212 return NULL;
4214 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4215 !parse_number(&pos, &lineno, 1, view->lines) ||
4216 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4217 return NULL;
4219 commit = get_blame_commit(view, text);
4220 if (!commit)
4221 return NULL;
4223 *blamed += group;
4224 while (group--) {
4225 struct line *line = &view->line[lineno + group - 1];
4227 blame = line->data;
4228 blame->commit = commit;
4229 blame->lineno = orig_lineno + group - 1;
4230 line->dirty = 1;
4231 }
4233 return commit;
4234 }
4236 static bool
4237 blame_read_file(struct view *view, const char *line, bool *read_file)
4238 {
4239 if (!line) {
4240 const char *blame_argv[] = {
4241 "git", "blame", "%(blameargs)", "--incremental",
4242 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4243 };
4245 if (view->lines == 0 && !view->prev)
4246 die("No blame exist for %s", view->vid);
4248 if (view->lines == 0 || !begin_update(view, opt_cdup, blame_argv, OPEN_EXTRA)) {
4249 report("Failed to load blame data");
4250 return TRUE;
4251 }
4253 *read_file = FALSE;
4254 return FALSE;
4256 } else {
4257 size_t linelen = strlen(line);
4258 struct blame *blame = malloc(sizeof(*blame) + linelen);
4260 if (!blame)
4261 return FALSE;
4263 blame->commit = NULL;
4264 strncpy(blame->text, line, linelen);
4265 blame->text[linelen] = 0;
4266 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4267 }
4268 }
4270 static bool
4271 match_blame_header(const char *name, char **line)
4272 {
4273 size_t namelen = strlen(name);
4274 bool matched = !strncmp(name, *line, namelen);
4276 if (matched)
4277 *line += namelen;
4279 return matched;
4280 }
4282 static bool
4283 blame_read(struct view *view, char *line)
4284 {
4285 static struct blame_commit *commit = NULL;
4286 static int blamed = 0;
4287 static bool read_file = TRUE;
4289 if (read_file)
4290 return blame_read_file(view, line, &read_file);
4292 if (!line) {
4293 /* Reset all! */
4294 commit = NULL;
4295 blamed = 0;
4296 read_file = TRUE;
4297 string_format(view->ref, "%s", view->vid);
4298 if (view_is_displayed(view)) {
4299 update_view_title(view);
4300 redraw_view_from(view, 0);
4301 }
4302 return TRUE;
4303 }
4305 if (!commit) {
4306 commit = parse_blame_commit(view, line, &blamed);
4307 string_format(view->ref, "%s %2d%%", view->vid,
4308 view->lines ? blamed * 100 / view->lines : 0);
4310 } else if (match_blame_header("author ", &line)) {
4311 commit->author = get_author(line);
4313 } else if (match_blame_header("author-time ", &line)) {
4314 parse_timesec(&commit->time, line);
4316 } else if (match_blame_header("author-tz ", &line)) {
4317 parse_timezone(&commit->time, line);
4319 } else if (match_blame_header("summary ", &line)) {
4320 string_ncopy(commit->title, line, strlen(line));
4322 } else if (match_blame_header("previous ", &line)) {
4323 if (strlen(line) <= SIZEOF_REV)
4324 return FALSE;
4325 string_copy_rev(commit->parent_id, line);
4326 line += SIZEOF_REV;
4327 string_ncopy(commit->parent_filename, line, strlen(line));
4329 } else if (match_blame_header("filename ", &line)) {
4330 string_ncopy(commit->filename, line, strlen(line));
4331 commit = NULL;
4332 }
4334 return TRUE;
4335 }
4337 static bool
4338 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4339 {
4340 struct blame *blame = line->data;
4341 struct time *time = NULL;
4342 const char *id = NULL, *author = NULL;
4344 if (blame->commit && *blame->commit->filename) {
4345 id = blame->commit->id;
4346 author = blame->commit->author;
4347 time = &blame->commit->time;
4348 }
4350 if (draw_date(view, time))
4351 return TRUE;
4353 if (draw_author(view, author))
4354 return TRUE;
4356 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4357 return TRUE;
4359 if (draw_lineno(view, lineno))
4360 return TRUE;
4362 draw_text(view, LINE_DEFAULT, blame->text);
4363 return TRUE;
4364 }
4366 static bool
4367 check_blame_commit(struct blame *blame, bool check_null_id)
4368 {
4369 if (!blame->commit)
4370 report("Commit data not loaded yet");
4371 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4372 report("No commit exist for the selected line");
4373 else
4374 return TRUE;
4375 return FALSE;
4376 }
4378 static void
4379 setup_blame_parent_line(struct view *view, struct blame *blame)
4380 {
4381 char from[SIZEOF_REF + SIZEOF_STR];
4382 char to[SIZEOF_REF + SIZEOF_STR];
4383 const char *diff_tree_argv[] = {
4384 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4385 "-U0", from, to, "--", NULL
4386 };
4387 struct io io;
4388 int parent_lineno = -1;
4389 int blamed_lineno = -1;
4390 char *line;
4392 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4393 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4394 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4395 return;
4397 while ((line = io_get(&io, '\n', TRUE))) {
4398 if (*line == '@') {
4399 char *pos = strchr(line, '+');
4401 parent_lineno = atoi(line + 4);
4402 if (pos)
4403 blamed_lineno = atoi(pos + 1);
4405 } else if (*line == '+' && parent_lineno != -1) {
4406 if (blame->lineno == blamed_lineno - 1 &&
4407 !strcmp(blame->text, line + 1)) {
4408 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4409 break;
4410 }
4411 blamed_lineno++;
4412 }
4413 }
4415 io_done(&io);
4416 }
4418 static enum request
4419 blame_request(struct view *view, enum request request, struct line *line)
4420 {
4421 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4422 struct blame *blame = line->data;
4424 switch (request) {
4425 case REQ_VIEW_BLAME:
4426 if (check_blame_commit(blame, TRUE)) {
4427 string_copy(opt_ref, blame->commit->id);
4428 string_copy(opt_file, blame->commit->filename);
4429 if (blame->lineno)
4430 view->lineno = blame->lineno;
4431 reload_view(view);
4432 }
4433 break;
4435 case REQ_PARENT:
4436 if (!check_blame_commit(blame, TRUE))
4437 break;
4438 if (!*blame->commit->parent_id) {
4439 report("The selected commit has no parents");
4440 } else {
4441 string_copy_rev(opt_ref, blame->commit->parent_id);
4442 string_copy(opt_file, blame->commit->parent_filename);
4443 setup_blame_parent_line(view, blame);
4444 reload_view(view);
4445 }
4446 break;
4448 case REQ_ENTER:
4449 if (!check_blame_commit(blame, FALSE))
4450 break;
4452 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4453 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4454 break;
4456 if (!strcmp(blame->commit->id, NULL_ID)) {
4457 struct view *diff = VIEW(REQ_VIEW_DIFF);
4458 const char *diff_index_argv[] = {
4459 "git", "diff-index", "--root", "--patch-with-stat",
4460 "-C", "-M", "HEAD", "--", view->vid, NULL
4461 };
4463 if (!*blame->commit->parent_id) {
4464 diff_index_argv[1] = "diff";
4465 diff_index_argv[2] = "--no-color";
4466 diff_index_argv[6] = "--";
4467 diff_index_argv[7] = "/dev/null";
4468 }
4470 open_argv(view, diff, diff_index_argv, NULL, flags);
4471 } else {
4472 open_view(view, REQ_VIEW_DIFF, flags);
4473 }
4474 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4475 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4476 break;
4478 default:
4479 return request;
4480 }
4482 return REQ_NONE;
4483 }
4485 static bool
4486 blame_grep(struct view *view, struct line *line)
4487 {
4488 struct blame *blame = line->data;
4489 struct blame_commit *commit = blame->commit;
4490 const char *text[] = {
4491 blame->text,
4492 commit ? commit->title : "",
4493 commit ? commit->id : "",
4494 commit && opt_author ? commit->author : "",
4495 commit ? mkdate(&commit->time, opt_date) : "",
4496 NULL
4497 };
4499 return grep_text(view, text);
4500 }
4502 static void
4503 blame_select(struct view *view, struct line *line)
4504 {
4505 struct blame *blame = line->data;
4506 struct blame_commit *commit = blame->commit;
4508 if (!commit)
4509 return;
4511 if (!strcmp(commit->id, NULL_ID))
4512 string_ncopy(ref_commit, "HEAD", 4);
4513 else
4514 string_copy_rev(ref_commit, commit->id);
4515 }
4517 static struct view_ops blame_ops = {
4518 "line",
4519 blame_open,
4520 blame_read,
4521 blame_draw,
4522 blame_request,
4523 blame_grep,
4524 blame_select,
4525 };
4527 /*
4528 * Branch backend
4529 */
4531 struct branch {
4532 const char *author; /* Author of the last commit. */
4533 struct time time; /* Date of the last activity. */
4534 const struct ref *ref; /* Name and commit ID information. */
4535 };
4537 static const struct ref branch_all;
4539 static const enum sort_field branch_sort_fields[] = {
4540 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4541 };
4542 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4544 static int
4545 branch_compare(const void *l1, const void *l2)
4546 {
4547 const struct branch *branch1 = ((const struct line *) l1)->data;
4548 const struct branch *branch2 = ((const struct line *) l2)->data;
4550 switch (get_sort_field(branch_sort_state)) {
4551 case ORDERBY_DATE:
4552 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4554 case ORDERBY_AUTHOR:
4555 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4557 case ORDERBY_NAME:
4558 default:
4559 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4560 }
4561 }
4563 static bool
4564 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4565 {
4566 struct branch *branch = line->data;
4567 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4569 if (draw_date(view, &branch->time))
4570 return TRUE;
4572 if (draw_author(view, branch->author))
4573 return TRUE;
4575 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4576 return TRUE;
4577 }
4579 static enum request
4580 branch_request(struct view *view, enum request request, struct line *line)
4581 {
4582 struct branch *branch = line->data;
4584 switch (request) {
4585 case REQ_REFRESH:
4586 load_refs();
4587 refresh_view(view);
4588 return REQ_NONE;
4590 case REQ_TOGGLE_SORT_FIELD:
4591 case REQ_TOGGLE_SORT_ORDER:
4592 sort_view(view, request, &branch_sort_state, branch_compare);
4593 return REQ_NONE;
4595 case REQ_ENTER:
4596 {
4597 const struct ref *ref = branch->ref;
4598 const char *all_branches_argv[] = {
4599 "git", "log", "--no-color", "--pretty=raw", "--parents",
4600 "--topo-order",
4601 ref == &branch_all ? "--all" : ref->name, NULL
4602 };
4603 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4605 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
4606 return REQ_NONE;
4607 }
4608 default:
4609 return request;
4610 }
4611 }
4613 static bool
4614 branch_read(struct view *view, char *line)
4615 {
4616 static char id[SIZEOF_REV];
4617 struct branch *reference;
4618 size_t i;
4620 if (!line)
4621 return TRUE;
4623 switch (get_line_type(line)) {
4624 case LINE_COMMIT:
4625 string_copy_rev(id, line + STRING_SIZE("commit "));
4626 return TRUE;
4628 case LINE_AUTHOR:
4629 for (i = 0, reference = NULL; i < view->lines; i++) {
4630 struct branch *branch = view->line[i].data;
4632 if (strcmp(branch->ref->id, id))
4633 continue;
4635 view->line[i].dirty = TRUE;
4636 if (reference) {
4637 branch->author = reference->author;
4638 branch->time = reference->time;
4639 continue;
4640 }
4642 parse_author_line(line + STRING_SIZE("author "),
4643 &branch->author, &branch->time);
4644 reference = branch;
4645 }
4646 return TRUE;
4648 default:
4649 return TRUE;
4650 }
4652 }
4654 static bool
4655 branch_open_visitor(void *data, const struct ref *ref)
4656 {
4657 struct view *view = data;
4658 struct branch *branch;
4660 if (ref->tag || ref->ltag || ref->remote)
4661 return TRUE;
4663 branch = calloc(1, sizeof(*branch));
4664 if (!branch)
4665 return FALSE;
4667 branch->ref = ref;
4668 return !!add_line_data(view, branch, LINE_DEFAULT);
4669 }
4671 static bool
4672 branch_open(struct view *view, enum open_flags flags)
4673 {
4674 const char *branch_log[] = {
4675 "git", "log", "--no-color", "--pretty=raw",
4676 "--simplify-by-decoration", "--all", NULL
4677 };
4679 if (!begin_update(view, NULL, branch_log, flags)) {
4680 report("Failed to load branch data");
4681 return TRUE;
4682 }
4684 branch_open_visitor(view, &branch_all);
4685 foreach_ref(branch_open_visitor, view);
4686 view->p_restore = TRUE;
4688 return TRUE;
4689 }
4691 static bool
4692 branch_grep(struct view *view, struct line *line)
4693 {
4694 struct branch *branch = line->data;
4695 const char *text[] = {
4696 branch->ref->name,
4697 mkauthor(branch->author, opt_author_cols, opt_author),
4698 NULL
4699 };
4701 return grep_text(view, text);
4702 }
4704 static void
4705 branch_select(struct view *view, struct line *line)
4706 {
4707 struct branch *branch = line->data;
4709 string_copy_rev(view->ref, branch->ref->id);
4710 string_copy_rev(ref_commit, branch->ref->id);
4711 string_copy_rev(ref_head, branch->ref->id);
4712 string_copy_rev(ref_branch, branch->ref->name);
4713 }
4715 static struct view_ops branch_ops = {
4716 "branch",
4717 branch_open,
4718 branch_read,
4719 branch_draw,
4720 branch_request,
4721 branch_grep,
4722 branch_select,
4723 };
4725 /*
4726 * Status backend
4727 */
4729 struct status {
4730 char status;
4731 struct {
4732 mode_t mode;
4733 char rev[SIZEOF_REV];
4734 char name[SIZEOF_STR];
4735 } old;
4736 struct {
4737 mode_t mode;
4738 char rev[SIZEOF_REV];
4739 char name[SIZEOF_STR];
4740 } new;
4741 };
4743 static char status_onbranch[SIZEOF_STR];
4744 static struct status stage_status;
4745 static enum line_type stage_line_type;
4746 static size_t stage_chunks;
4747 static int *stage_chunk;
4749 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4751 /* This should work even for the "On branch" line. */
4752 static inline bool
4753 status_has_none(struct view *view, struct line *line)
4754 {
4755 return line < view->line + view->lines && !line[1].data;
4756 }
4758 /* Get fields from the diff line:
4759 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4760 */
4761 static inline bool
4762 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4763 {
4764 const char *old_mode = buf + 1;
4765 const char *new_mode = buf + 8;
4766 const char *old_rev = buf + 15;
4767 const char *new_rev = buf + 56;
4768 const char *status = buf + 97;
4770 if (bufsize < 98 ||
4771 old_mode[-1] != ':' ||
4772 new_mode[-1] != ' ' ||
4773 old_rev[-1] != ' ' ||
4774 new_rev[-1] != ' ' ||
4775 status[-1] != ' ')
4776 return FALSE;
4778 file->status = *status;
4780 string_copy_rev(file->old.rev, old_rev);
4781 string_copy_rev(file->new.rev, new_rev);
4783 file->old.mode = strtoul(old_mode, NULL, 8);
4784 file->new.mode = strtoul(new_mode, NULL, 8);
4786 file->old.name[0] = file->new.name[0] = 0;
4788 return TRUE;
4789 }
4791 static bool
4792 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4793 {
4794 struct status *unmerged = NULL;
4795 char *buf;
4796 struct io io;
4798 if (!io_run(&io, IO_RD, opt_cdup, argv))
4799 return FALSE;
4801 add_line_data(view, NULL, type);
4803 while ((buf = io_get(&io, 0, TRUE))) {
4804 struct status *file = unmerged;
4806 if (!file) {
4807 file = calloc(1, sizeof(*file));
4808 if (!file || !add_line_data(view, file, type))
4809 goto error_out;
4810 }
4812 /* Parse diff info part. */
4813 if (status) {
4814 file->status = status;
4815 if (status == 'A')
4816 string_copy(file->old.rev, NULL_ID);
4818 } else if (!file->status || file == unmerged) {
4819 if (!status_get_diff(file, buf, strlen(buf)))
4820 goto error_out;
4822 buf = io_get(&io, 0, TRUE);
4823 if (!buf)
4824 break;
4826 /* Collapse all modified entries that follow an
4827 * associated unmerged entry. */
4828 if (unmerged == file) {
4829 unmerged->status = 'U';
4830 unmerged = NULL;
4831 } else if (file->status == 'U') {
4832 unmerged = file;
4833 }
4834 }
4836 /* Grab the old name for rename/copy. */
4837 if (!*file->old.name &&
4838 (file->status == 'R' || file->status == 'C')) {
4839 string_ncopy(file->old.name, buf, strlen(buf));
4841 buf = io_get(&io, 0, TRUE);
4842 if (!buf)
4843 break;
4844 }
4846 /* git-ls-files just delivers a NUL separated list of
4847 * file names similar to the second half of the
4848 * git-diff-* output. */
4849 string_ncopy(file->new.name, buf, strlen(buf));
4850 if (!*file->old.name)
4851 string_copy(file->old.name, file->new.name);
4852 file = NULL;
4853 }
4855 if (io_error(&io)) {
4856 error_out:
4857 io_done(&io);
4858 return FALSE;
4859 }
4861 if (!view->line[view->lines - 1].data)
4862 add_line_data(view, NULL, LINE_STAT_NONE);
4864 io_done(&io);
4865 return TRUE;
4866 }
4868 /* Don't show unmerged entries in the staged section. */
4869 static const char *status_diff_index_argv[] = {
4870 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4871 "--cached", "-M", "HEAD", NULL
4872 };
4874 static const char *status_diff_files_argv[] = {
4875 "git", "diff-files", "-z", NULL
4876 };
4878 static const char *status_list_other_argv[] = {
4879 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4880 };
4882 static const char *status_list_no_head_argv[] = {
4883 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4884 };
4886 static const char *update_index_argv[] = {
4887 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4888 };
4890 /* Restore the previous line number to stay in the context or select a
4891 * line with something that can be updated. */
4892 static void
4893 status_restore(struct view *view)
4894 {
4895 if (view->p_lineno >= view->lines)
4896 view->p_lineno = view->lines - 1;
4897 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4898 view->p_lineno++;
4899 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4900 view->p_lineno--;
4902 /* If the above fails, always skip the "On branch" line. */
4903 if (view->p_lineno < view->lines)
4904 view->lineno = view->p_lineno;
4905 else
4906 view->lineno = 1;
4908 if (view->lineno < view->offset)
4909 view->offset = view->lineno;
4910 else if (view->offset + view->height <= view->lineno)
4911 view->offset = view->lineno - view->height + 1;
4913 view->p_restore = FALSE;
4914 }
4916 static void
4917 status_update_onbranch(void)
4918 {
4919 static const char *paths[][2] = {
4920 { "rebase-apply/rebasing", "Rebasing" },
4921 { "rebase-apply/applying", "Applying mailbox" },
4922 { "rebase-apply/", "Rebasing mailbox" },
4923 { "rebase-merge/interactive", "Interactive rebase" },
4924 { "rebase-merge/", "Rebase merge" },
4925 { "MERGE_HEAD", "Merging" },
4926 { "BISECT_LOG", "Bisecting" },
4927 { "HEAD", "On branch" },
4928 };
4929 char buf[SIZEOF_STR];
4930 struct stat stat;
4931 int i;
4933 if (is_initial_commit()) {
4934 string_copy(status_onbranch, "Initial commit");
4935 return;
4936 }
4938 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4939 char *head = opt_head;
4941 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4942 lstat(buf, &stat) < 0)
4943 continue;
4945 if (!*opt_head) {
4946 struct io io;
4948 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4949 io_read_buf(&io, buf, sizeof(buf))) {
4950 head = buf;
4951 if (!prefixcmp(head, "refs/heads/"))
4952 head += STRING_SIZE("refs/heads/");
4953 }
4954 }
4956 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4957 string_copy(status_onbranch, opt_head);
4958 return;
4959 }
4961 string_copy(status_onbranch, "Not currently on any branch");
4962 }
4964 /* First parse staged info using git-diff-index(1), then parse unstaged
4965 * info using git-diff-files(1), and finally untracked files using
4966 * git-ls-files(1). */
4967 static bool
4968 status_open(struct view *view, enum open_flags flags)
4969 {
4970 reset_view(view);
4972 add_line_data(view, NULL, LINE_STAT_HEAD);
4973 status_update_onbranch();
4975 io_run_bg(update_index_argv);
4977 if (is_initial_commit()) {
4978 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4979 return FALSE;
4980 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4981 return FALSE;
4982 }
4984 if (!opt_untracked_dirs_content)
4985 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
4987 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4988 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4989 return FALSE;
4991 /* Restore the exact position or use the specialized restore
4992 * mode? */
4993 if (!view->p_restore)
4994 status_restore(view);
4995 return TRUE;
4996 }
4998 static bool
4999 status_draw(struct view *view, struct line *line, unsigned int lineno)
5000 {
5001 struct status *status = line->data;
5002 enum line_type type;
5003 const char *text;
5005 if (!status) {
5006 switch (line->type) {
5007 case LINE_STAT_STAGED:
5008 type = LINE_STAT_SECTION;
5009 text = "Changes to be committed:";
5010 break;
5012 case LINE_STAT_UNSTAGED:
5013 type = LINE_STAT_SECTION;
5014 text = "Changed but not updated:";
5015 break;
5017 case LINE_STAT_UNTRACKED:
5018 type = LINE_STAT_SECTION;
5019 text = "Untracked files:";
5020 break;
5022 case LINE_STAT_NONE:
5023 type = LINE_DEFAULT;
5024 text = " (no files)";
5025 break;
5027 case LINE_STAT_HEAD:
5028 type = LINE_STAT_HEAD;
5029 text = status_onbranch;
5030 break;
5032 default:
5033 return FALSE;
5034 }
5035 } else {
5036 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5038 buf[0] = status->status;
5039 if (draw_text(view, line->type, buf))
5040 return TRUE;
5041 type = LINE_DEFAULT;
5042 text = status->new.name;
5043 }
5045 draw_text(view, type, text);
5046 return TRUE;
5047 }
5049 static enum request
5050 status_enter(struct view *view, struct line *line)
5051 {
5052 struct status *status = line->data;
5053 const char *oldpath = status ? status->old.name : NULL;
5054 /* Diffs for unmerged entries are empty when passing the new
5055 * path, so leave it empty. */
5056 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5057 const char *info;
5058 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5059 struct view *stage = VIEW(REQ_VIEW_STAGE);
5061 if (line->type == LINE_STAT_NONE ||
5062 (!status && line[1].type == LINE_STAT_NONE)) {
5063 report("No file to diff");
5064 return REQ_NONE;
5065 }
5067 switch (line->type) {
5068 case LINE_STAT_STAGED:
5069 if (is_initial_commit()) {
5070 const char *no_head_diff_argv[] = {
5071 "git", "diff", "--no-color", "--patch-with-stat",
5072 "--", "/dev/null", newpath, NULL
5073 };
5075 open_argv(view, stage, no_head_diff_argv, opt_cdup, flags);
5076 } else {
5077 const char *index_show_argv[] = {
5078 "git", "diff-index", "--root", "--patch-with-stat",
5079 "-C", "-M", "--cached", "HEAD", "--",
5080 oldpath, newpath, NULL
5081 };
5083 open_argv(view, stage, index_show_argv, opt_cdup, flags);
5084 }
5086 if (status)
5087 info = "Staged changes to %s";
5088 else
5089 info = "Staged changes";
5090 break;
5092 case LINE_STAT_UNSTAGED:
5093 {
5094 const char *files_show_argv[] = {
5095 "git", "diff-files", "--root", "--patch-with-stat",
5096 "-C", "-M", "--", oldpath, newpath, NULL
5097 };
5099 open_argv(view, stage, files_show_argv, opt_cdup, flags);
5100 if (status)
5101 info = "Unstaged changes to %s";
5102 else
5103 info = "Unstaged changes";
5104 break;
5105 }
5106 case LINE_STAT_UNTRACKED:
5107 if (!newpath) {
5108 report("No file to show");
5109 return REQ_NONE;
5110 }
5112 if (!suffixcmp(status->new.name, -1, "/")) {
5113 report("Cannot display a directory");
5114 return REQ_NONE;
5115 }
5117 open_file(view, stage, newpath, flags);
5118 info = "Untracked file %s";
5119 break;
5121 case LINE_STAT_HEAD:
5122 return REQ_NONE;
5124 default:
5125 die("line type %d not handled in switch", line->type);
5126 }
5128 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5129 if (status) {
5130 stage_status = *status;
5131 } else {
5132 memset(&stage_status, 0, sizeof(stage_status));
5133 }
5135 stage_line_type = line->type;
5136 stage_chunks = 0;
5137 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5138 }
5140 return REQ_NONE;
5141 }
5143 static bool
5144 status_exists(struct status *status, enum line_type type)
5145 {
5146 struct view *view = VIEW(REQ_VIEW_STATUS);
5147 unsigned long lineno;
5149 for (lineno = 0; lineno < view->lines; lineno++) {
5150 struct line *line = &view->line[lineno];
5151 struct status *pos = line->data;
5153 if (line->type != type)
5154 continue;
5155 if (!pos && (!status || !status->status) && line[1].data) {
5156 select_view_line(view, lineno);
5157 return TRUE;
5158 }
5159 if (pos && !strcmp(status->new.name, pos->new.name)) {
5160 select_view_line(view, lineno);
5161 return TRUE;
5162 }
5163 }
5165 return FALSE;
5166 }
5169 static bool
5170 status_update_prepare(struct io *io, enum line_type type)
5171 {
5172 const char *staged_argv[] = {
5173 "git", "update-index", "-z", "--index-info", NULL
5174 };
5175 const char *others_argv[] = {
5176 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5177 };
5179 switch (type) {
5180 case LINE_STAT_STAGED:
5181 return io_run(io, IO_WR, opt_cdup, staged_argv);
5183 case LINE_STAT_UNSTAGED:
5184 case LINE_STAT_UNTRACKED:
5185 return io_run(io, IO_WR, opt_cdup, others_argv);
5187 default:
5188 die("line type %d not handled in switch", type);
5189 return FALSE;
5190 }
5191 }
5193 static bool
5194 status_update_write(struct io *io, struct status *status, enum line_type type)
5195 {
5196 char buf[SIZEOF_STR];
5197 size_t bufsize = 0;
5199 switch (type) {
5200 case LINE_STAT_STAGED:
5201 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5202 status->old.mode,
5203 status->old.rev,
5204 status->old.name, 0))
5205 return FALSE;
5206 break;
5208 case LINE_STAT_UNSTAGED:
5209 case LINE_STAT_UNTRACKED:
5210 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5211 return FALSE;
5212 break;
5214 default:
5215 die("line type %d not handled in switch", type);
5216 }
5218 return io_write(io, buf, bufsize);
5219 }
5221 static bool
5222 status_update_file(struct status *status, enum line_type type)
5223 {
5224 struct io io;
5225 bool result;
5227 if (!status_update_prepare(&io, type))
5228 return FALSE;
5230 result = status_update_write(&io, status, type);
5231 return io_done(&io) && result;
5232 }
5234 static bool
5235 status_update_files(struct view *view, struct line *line)
5236 {
5237 char buf[sizeof(view->ref)];
5238 struct io io;
5239 bool result = TRUE;
5240 struct line *pos = view->line + view->lines;
5241 int files = 0;
5242 int file, done;
5243 int cursor_y = -1, cursor_x = -1;
5245 if (!status_update_prepare(&io, line->type))
5246 return FALSE;
5248 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5249 files++;
5251 string_copy(buf, view->ref);
5252 getsyx(cursor_y, cursor_x);
5253 for (file = 0, done = 5; result && file < files; line++, file++) {
5254 int almost_done = file * 100 / files;
5256 if (almost_done > done) {
5257 done = almost_done;
5258 string_format(view->ref, "updating file %u of %u (%d%% done)",
5259 file, files, done);
5260 update_view_title(view);
5261 setsyx(cursor_y, cursor_x);
5262 doupdate();
5263 }
5264 result = status_update_write(&io, line->data, line->type);
5265 }
5266 string_copy(view->ref, buf);
5268 return io_done(&io) && result;
5269 }
5271 static bool
5272 status_update(struct view *view)
5273 {
5274 struct line *line = &view->line[view->lineno];
5276 assert(view->lines);
5278 if (!line->data) {
5279 /* This should work even for the "On branch" line. */
5280 if (line < view->line + view->lines && !line[1].data) {
5281 report("Nothing to update");
5282 return FALSE;
5283 }
5285 if (!status_update_files(view, line + 1)) {
5286 report("Failed to update file status");
5287 return FALSE;
5288 }
5290 } else if (!status_update_file(line->data, line->type)) {
5291 report("Failed to update file status");
5292 return FALSE;
5293 }
5295 return TRUE;
5296 }
5298 static bool
5299 status_revert(struct status *status, enum line_type type, bool has_none)
5300 {
5301 if (!status || type != LINE_STAT_UNSTAGED) {
5302 if (type == LINE_STAT_STAGED) {
5303 report("Cannot revert changes to staged files");
5304 } else if (type == LINE_STAT_UNTRACKED) {
5305 report("Cannot revert changes to untracked files");
5306 } else if (has_none) {
5307 report("Nothing to revert");
5308 } else {
5309 report("Cannot revert changes to multiple files");
5310 }
5312 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5313 char mode[10] = "100644";
5314 const char *reset_argv[] = {
5315 "git", "update-index", "--cacheinfo", mode,
5316 status->old.rev, status->old.name, NULL
5317 };
5318 const char *checkout_argv[] = {
5319 "git", "checkout", "--", status->old.name, NULL
5320 };
5322 if (status->status == 'U') {
5323 string_format(mode, "%5o", status->old.mode);
5325 if (status->old.mode == 0 && status->new.mode == 0) {
5326 reset_argv[2] = "--force-remove";
5327 reset_argv[3] = status->old.name;
5328 reset_argv[4] = NULL;
5329 }
5331 if (!io_run_fg(reset_argv, opt_cdup))
5332 return FALSE;
5333 if (status->old.mode == 0 && status->new.mode == 0)
5334 return TRUE;
5335 }
5337 return io_run_fg(checkout_argv, opt_cdup);
5338 }
5340 return FALSE;
5341 }
5343 static enum request
5344 status_request(struct view *view, enum request request, struct line *line)
5345 {
5346 struct status *status = line->data;
5348 switch (request) {
5349 case REQ_STATUS_UPDATE:
5350 if (!status_update(view))
5351 return REQ_NONE;
5352 break;
5354 case REQ_STATUS_REVERT:
5355 if (!status_revert(status, line->type, status_has_none(view, line)))
5356 return REQ_NONE;
5357 break;
5359 case REQ_STATUS_MERGE:
5360 if (!status || status->status != 'U') {
5361 report("Merging only possible for files with unmerged status ('U').");
5362 return REQ_NONE;
5363 }
5364 open_mergetool(status->new.name);
5365 break;
5367 case REQ_EDIT:
5368 if (!status)
5369 return request;
5370 if (status->status == 'D') {
5371 report("File has been deleted.");
5372 return REQ_NONE;
5373 }
5375 open_editor(status->new.name);
5376 break;
5378 case REQ_VIEW_BLAME:
5379 if (status)
5380 opt_ref[0] = 0;
5381 return request;
5383 case REQ_ENTER:
5384 /* After returning the status view has been split to
5385 * show the stage view. No further reloading is
5386 * necessary. */
5387 return status_enter(view, line);
5389 case REQ_REFRESH:
5390 /* Simply reload the view. */
5391 break;
5393 default:
5394 return request;
5395 }
5397 refresh_view(view);
5399 return REQ_NONE;
5400 }
5402 static void
5403 status_select(struct view *view, struct line *line)
5404 {
5405 struct status *status = line->data;
5406 char file[SIZEOF_STR] = "all files";
5407 const char *text;
5408 const char *key;
5410 if (status && !string_format(file, "'%s'", status->new.name))
5411 return;
5413 if (!status && line[1].type == LINE_STAT_NONE)
5414 line++;
5416 switch (line->type) {
5417 case LINE_STAT_STAGED:
5418 text = "Press %s to unstage %s for commit";
5419 break;
5421 case LINE_STAT_UNSTAGED:
5422 text = "Press %s to stage %s for commit";
5423 break;
5425 case LINE_STAT_UNTRACKED:
5426 text = "Press %s to stage %s for addition";
5427 break;
5429 case LINE_STAT_HEAD:
5430 case LINE_STAT_NONE:
5431 text = "Nothing to update";
5432 break;
5434 default:
5435 die("line type %d not handled in switch", line->type);
5436 }
5438 if (status && status->status == 'U') {
5439 text = "Press %s to resolve conflict in %s";
5440 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5442 } else {
5443 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5444 }
5446 string_format(view->ref, text, key, file);
5447 if (status)
5448 string_copy(opt_file, status->new.name);
5449 }
5451 static bool
5452 status_grep(struct view *view, struct line *line)
5453 {
5454 struct status *status = line->data;
5456 if (status) {
5457 const char buf[2] = { status->status, 0 };
5458 const char *text[] = { status->new.name, buf, NULL };
5460 return grep_text(view, text);
5461 }
5463 return FALSE;
5464 }
5466 static struct view_ops status_ops = {
5467 "file",
5468 status_open,
5469 NULL,
5470 status_draw,
5471 status_request,
5472 status_grep,
5473 status_select,
5474 };
5477 static bool
5478 stage_diff_write(struct io *io, struct line *line, struct line *end)
5479 {
5480 while (line < end) {
5481 if (!io_write(io, line->data, strlen(line->data)) ||
5482 !io_write(io, "\n", 1))
5483 return FALSE;
5484 line++;
5485 if (line->type == LINE_DIFF_CHUNK ||
5486 line->type == LINE_DIFF_HEADER)
5487 break;
5488 }
5490 return TRUE;
5491 }
5493 static struct line *
5494 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5495 {
5496 for (; view->line < line; line--)
5497 if (line->type == type)
5498 return line;
5500 return NULL;
5501 }
5503 static bool
5504 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5505 {
5506 const char *apply_argv[SIZEOF_ARG] = {
5507 "git", "apply", "--whitespace=nowarn", NULL
5508 };
5509 struct line *diff_hdr;
5510 struct io io;
5511 int argc = 3;
5513 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5514 if (!diff_hdr)
5515 return FALSE;
5517 if (!revert)
5518 apply_argv[argc++] = "--cached";
5519 if (revert || stage_line_type == LINE_STAT_STAGED)
5520 apply_argv[argc++] = "-R";
5521 apply_argv[argc++] = "-";
5522 apply_argv[argc++] = NULL;
5523 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5524 return FALSE;
5526 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5527 !stage_diff_write(&io, chunk, view->line + view->lines))
5528 chunk = NULL;
5530 io_done(&io);
5531 io_run_bg(update_index_argv);
5533 return chunk ? TRUE : FALSE;
5534 }
5536 static bool
5537 stage_update(struct view *view, struct line *line)
5538 {
5539 struct line *chunk = NULL;
5541 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5542 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5544 if (chunk) {
5545 if (!stage_apply_chunk(view, chunk, FALSE)) {
5546 report("Failed to apply chunk");
5547 return FALSE;
5548 }
5550 } else if (!stage_status.status) {
5551 view = VIEW(REQ_VIEW_STATUS);
5553 for (line = view->line; line < view->line + view->lines; line++)
5554 if (line->type == stage_line_type)
5555 break;
5557 if (!status_update_files(view, line + 1)) {
5558 report("Failed to update files");
5559 return FALSE;
5560 }
5562 } else if (!status_update_file(&stage_status, stage_line_type)) {
5563 report("Failed to update file");
5564 return FALSE;
5565 }
5567 return TRUE;
5568 }
5570 static bool
5571 stage_revert(struct view *view, struct line *line)
5572 {
5573 struct line *chunk = NULL;
5575 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5576 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5578 if (chunk) {
5579 if (!prompt_yesno("Are you sure you want to revert changes?"))
5580 return FALSE;
5582 if (!stage_apply_chunk(view, chunk, TRUE)) {
5583 report("Failed to revert chunk");
5584 return FALSE;
5585 }
5586 return TRUE;
5588 } else {
5589 return status_revert(stage_status.status ? &stage_status : NULL,
5590 stage_line_type, FALSE);
5591 }
5592 }
5595 static void
5596 stage_next(struct view *view, struct line *line)
5597 {
5598 int i;
5600 if (!stage_chunks) {
5601 for (line = view->line; line < view->line + view->lines; line++) {
5602 if (line->type != LINE_DIFF_CHUNK)
5603 continue;
5605 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5606 report("Allocation failure");
5607 return;
5608 }
5610 stage_chunk[stage_chunks++] = line - view->line;
5611 }
5612 }
5614 for (i = 0; i < stage_chunks; i++) {
5615 if (stage_chunk[i] > view->lineno) {
5616 do_scroll_view(view, stage_chunk[i] - view->lineno);
5617 report("Chunk %d of %d", i + 1, stage_chunks);
5618 return;
5619 }
5620 }
5622 report("No next chunk found");
5623 }
5625 static enum request
5626 stage_request(struct view *view, enum request request, struct line *line)
5627 {
5628 switch (request) {
5629 case REQ_STATUS_UPDATE:
5630 if (!stage_update(view, line))
5631 return REQ_NONE;
5632 break;
5634 case REQ_STATUS_REVERT:
5635 if (!stage_revert(view, line))
5636 return REQ_NONE;
5637 break;
5639 case REQ_STAGE_NEXT:
5640 if (stage_line_type == LINE_STAT_UNTRACKED) {
5641 report("File is untracked; press %s to add",
5642 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5643 return REQ_NONE;
5644 }
5645 stage_next(view, line);
5646 return REQ_NONE;
5648 case REQ_EDIT:
5649 if (!stage_status.new.name[0])
5650 return request;
5651 if (stage_status.status == 'D') {
5652 report("File has been deleted.");
5653 return REQ_NONE;
5654 }
5656 open_editor(stage_status.new.name);
5657 break;
5659 case REQ_REFRESH:
5660 /* Reload everything ... */
5661 break;
5663 case REQ_VIEW_BLAME:
5664 if (stage_status.new.name[0]) {
5665 string_copy(opt_file, stage_status.new.name);
5666 opt_ref[0] = 0;
5667 }
5668 return request;
5670 case REQ_ENTER:
5671 return pager_request(view, request, line);
5673 default:
5674 return request;
5675 }
5677 refresh_view(view->parent);
5679 /* Check whether the staged entry still exists, and close the
5680 * stage view if it doesn't. */
5681 if (!status_exists(&stage_status, stage_line_type)) {
5682 status_restore(VIEW(REQ_VIEW_STATUS));
5683 return REQ_VIEW_CLOSE;
5684 }
5686 refresh_view(view);
5688 return REQ_NONE;
5689 }
5691 static struct view_ops stage_ops = {
5692 "line",
5693 view_open,
5694 pager_read,
5695 pager_draw,
5696 stage_request,
5697 pager_grep,
5698 pager_select,
5699 };
5702 /*
5703 * Revision graph
5704 */
5706 static const enum line_type graph_colors[] = {
5707 LINE_GRAPH_LINE_0,
5708 LINE_GRAPH_LINE_1,
5709 LINE_GRAPH_LINE_2,
5710 LINE_GRAPH_LINE_3,
5711 LINE_GRAPH_LINE_4,
5712 LINE_GRAPH_LINE_5,
5713 LINE_GRAPH_LINE_6,
5714 };
5716 static enum line_type get_graph_color(struct graph_symbol *symbol)
5717 {
5718 if (symbol->commit)
5719 return LINE_GRAPH_COMMIT;
5720 assert(symbol->color < ARRAY_SIZE(graph_colors));
5721 return graph_colors[symbol->color];
5722 }
5724 static bool
5725 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5726 {
5727 const char *chars = graph_symbol_to_utf8(symbol);
5729 return draw_text(view, color, chars + !!first);
5730 }
5732 static bool
5733 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5734 {
5735 const char *chars = graph_symbol_to_ascii(symbol);
5737 return draw_text(view, color, chars + !!first);
5738 }
5740 static bool
5741 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5742 {
5743 const chtype *chars = graph_symbol_to_chtype(symbol);
5745 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5746 }
5748 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5750 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5751 {
5752 static const draw_graph_fn fns[] = {
5753 draw_graph_ascii,
5754 draw_graph_chtype,
5755 draw_graph_utf8
5756 };
5757 draw_graph_fn fn = fns[opt_line_graphics];
5758 int i;
5760 for (i = 0; i < canvas->size; i++) {
5761 struct graph_symbol *symbol = &canvas->symbols[i];
5762 enum line_type color = get_graph_color(symbol);
5764 if (fn(view, symbol, color, i == 0))
5765 return TRUE;
5766 }
5768 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5769 }
5771 /*
5772 * Main view backend
5773 */
5775 struct commit {
5776 char id[SIZEOF_REV]; /* SHA1 ID. */
5777 char title[128]; /* First line of the commit message. */
5778 const char *author; /* Author of the commit. */
5779 struct time time; /* Date from the author ident. */
5780 struct ref_list *refs; /* Repository references. */
5781 struct graph_canvas graph; /* Ancestry chain graphics. */
5782 };
5784 static bool
5785 main_open(struct view *view, enum open_flags flags)
5786 {
5787 static const char *main_argv[] = {
5788 "git", "log", "--no-color", "--pretty=raw", "--parents",
5789 "--topo-order", "%(diffargs)", "%(revargs)",
5790 "--", "%(fileargs)", NULL
5791 };
5793 return begin_update(view, NULL, main_argv, flags);
5794 }
5796 static bool
5797 main_draw(struct view *view, struct line *line, unsigned int lineno)
5798 {
5799 struct commit *commit = line->data;
5801 if (!commit->author)
5802 return FALSE;
5804 if (draw_date(view, &commit->time))
5805 return TRUE;
5807 if (draw_author(view, commit->author))
5808 return TRUE;
5810 if (opt_rev_graph && draw_graph(view, &commit->graph))
5811 return TRUE;
5813 if (draw_refs(view, commit->refs))
5814 return TRUE;
5816 draw_text(view, LINE_DEFAULT, commit->title);
5817 return TRUE;
5818 }
5820 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5821 static bool
5822 main_read(struct view *view, char *line)
5823 {
5824 static struct graph graph;
5825 enum line_type type;
5826 struct commit *commit;
5828 if (!line) {
5829 if (!view->lines && !view->prev)
5830 die("No revisions match the given arguments.");
5831 if (view->lines > 0) {
5832 commit = view->line[view->lines - 1].data;
5833 view->line[view->lines - 1].dirty = 1;
5834 if (!commit->author) {
5835 view->lines--;
5836 free(commit);
5837 }
5838 }
5840 done_graph(&graph);
5841 return TRUE;
5842 }
5844 type = get_line_type(line);
5845 if (type == LINE_COMMIT) {
5846 bool is_boundary;
5848 commit = calloc(1, sizeof(struct commit));
5849 if (!commit)
5850 return FALSE;
5852 line += STRING_SIZE("commit ");
5853 is_boundary = *line == '-';
5854 if (is_boundary)
5855 line++;
5857 string_copy_rev(commit->id, line);
5858 commit->refs = get_ref_list(commit->id);
5859 add_line_data(view, commit, LINE_MAIN_COMMIT);
5860 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5861 return TRUE;
5862 }
5864 if (!view->lines)
5865 return TRUE;
5866 commit = view->line[view->lines - 1].data;
5868 switch (type) {
5869 case LINE_PARENT:
5870 if (!graph.has_parents)
5871 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5872 break;
5874 case LINE_AUTHOR:
5875 parse_author_line(line + STRING_SIZE("author "),
5876 &commit->author, &commit->time);
5877 graph_render_parents(&graph);
5878 break;
5880 default:
5881 /* Fill in the commit title if it has not already been set. */
5882 if (commit->title[0])
5883 break;
5885 /* Require titles to start with a non-space character at the
5886 * offset used by git log. */
5887 if (strncmp(line, " ", 4))
5888 break;
5889 line += 4;
5890 /* Well, if the title starts with a whitespace character,
5891 * try to be forgiving. Otherwise we end up with no title. */
5892 while (isspace(*line))
5893 line++;
5894 if (*line == '\0')
5895 break;
5896 /* FIXME: More graceful handling of titles; append "..." to
5897 * shortened titles, etc. */
5899 string_expand(commit->title, sizeof(commit->title), line, 1);
5900 view->line[view->lines - 1].dirty = 1;
5901 }
5903 return TRUE;
5904 }
5906 static enum request
5907 main_request(struct view *view, enum request request, struct line *line)
5908 {
5909 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5911 switch (request) {
5912 case REQ_ENTER:
5913 if (view_is_displayed(view) && display[0] != view)
5914 maximize_view(view, TRUE);
5915 open_view(view, REQ_VIEW_DIFF, flags);
5916 break;
5917 case REQ_REFRESH:
5918 load_refs();
5919 refresh_view(view);
5920 break;
5921 default:
5922 return request;
5923 }
5925 return REQ_NONE;
5926 }
5928 static bool
5929 grep_refs(struct ref_list *list, regex_t *regex)
5930 {
5931 regmatch_t pmatch;
5932 size_t i;
5934 if (!opt_show_refs || !list)
5935 return FALSE;
5937 for (i = 0; i < list->size; i++) {
5938 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5939 return TRUE;
5940 }
5942 return FALSE;
5943 }
5945 static bool
5946 main_grep(struct view *view, struct line *line)
5947 {
5948 struct commit *commit = line->data;
5949 const char *text[] = {
5950 commit->title,
5951 mkauthor(commit->author, opt_author_cols, opt_author),
5952 mkdate(&commit->time, opt_date),
5953 NULL
5954 };
5956 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5957 }
5959 static void
5960 main_select(struct view *view, struct line *line)
5961 {
5962 struct commit *commit = line->data;
5964 string_copy_rev(view->ref, commit->id);
5965 string_copy_rev(ref_commit, view->ref);
5966 }
5968 static struct view_ops main_ops = {
5969 "commit",
5970 main_open,
5971 main_read,
5972 main_draw,
5973 main_request,
5974 main_grep,
5975 main_select,
5976 };
5979 /*
5980 * Status management
5981 */
5983 /* Whether or not the curses interface has been initialized. */
5984 static bool cursed = FALSE;
5986 /* Terminal hacks and workarounds. */
5987 static bool use_scroll_redrawwin;
5988 static bool use_scroll_status_wclear;
5990 /* The status window is used for polling keystrokes. */
5991 static WINDOW *status_win;
5993 /* Reading from the prompt? */
5994 static bool input_mode = FALSE;
5996 static bool status_empty = FALSE;
5998 /* Update status and title window. */
5999 static void
6000 report(const char *msg, ...)
6001 {
6002 struct view *view = display[current_view];
6004 if (input_mode)
6005 return;
6007 if (!view) {
6008 char buf[SIZEOF_STR];
6009 va_list args;
6011 va_start(args, msg);
6012 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6013 buf[sizeof(buf) - 1] = 0;
6014 buf[sizeof(buf) - 2] = '.';
6015 buf[sizeof(buf) - 3] = '.';
6016 buf[sizeof(buf) - 4] = '.';
6017 }
6018 va_end(args);
6019 die("%s", buf);
6020 }
6022 if (!status_empty || *msg) {
6023 va_list args;
6025 va_start(args, msg);
6027 wmove(status_win, 0, 0);
6028 if (view->has_scrolled && use_scroll_status_wclear)
6029 wclear(status_win);
6030 if (*msg) {
6031 vwprintw(status_win, msg, args);
6032 status_empty = FALSE;
6033 } else {
6034 status_empty = TRUE;
6035 }
6036 wclrtoeol(status_win);
6037 wnoutrefresh(status_win);
6039 va_end(args);
6040 }
6042 update_view_title(view);
6043 }
6045 static void
6046 init_display(void)
6047 {
6048 const char *term;
6049 int x, y;
6051 /* Initialize the curses library */
6052 if (isatty(STDIN_FILENO)) {
6053 cursed = !!initscr();
6054 opt_tty = stdin;
6055 } else {
6056 /* Leave stdin and stdout alone when acting as a pager. */
6057 opt_tty = fopen("/dev/tty", "r+");
6058 if (!opt_tty)
6059 die("Failed to open /dev/tty");
6060 cursed = !!newterm(NULL, opt_tty, opt_tty);
6061 }
6063 if (!cursed)
6064 die("Failed to initialize curses");
6066 nonl(); /* Disable conversion and detect newlines from input. */
6067 cbreak(); /* Take input chars one at a time, no wait for \n */
6068 noecho(); /* Don't echo input */
6069 leaveok(stdscr, FALSE);
6071 if (has_colors())
6072 init_colors();
6074 getmaxyx(stdscr, y, x);
6075 status_win = newwin(1, x, y - 1, 0);
6076 if (!status_win)
6077 die("Failed to create status window");
6079 /* Enable keyboard mapping */
6080 keypad(status_win, TRUE);
6081 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6083 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6084 set_tabsize(opt_tab_size);
6085 #else
6086 TABSIZE = opt_tab_size;
6087 #endif
6089 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6090 if (term && !strcmp(term, "gnome-terminal")) {
6091 /* In the gnome-terminal-emulator, the message from
6092 * scrolling up one line when impossible followed by
6093 * scrolling down one line causes corruption of the
6094 * status line. This is fixed by calling wclear. */
6095 use_scroll_status_wclear = TRUE;
6096 use_scroll_redrawwin = FALSE;
6098 } else if (term && !strcmp(term, "xrvt-xpm")) {
6099 /* No problems with full optimizations in xrvt-(unicode)
6100 * and aterm. */
6101 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6103 } else {
6104 /* When scrolling in (u)xterm the last line in the
6105 * scrolling direction will update slowly. */
6106 use_scroll_redrawwin = TRUE;
6107 use_scroll_status_wclear = FALSE;
6108 }
6109 }
6111 static int
6112 get_input(int prompt_position)
6113 {
6114 struct view *view;
6115 int i, key, cursor_y, cursor_x;
6117 if (prompt_position)
6118 input_mode = TRUE;
6120 while (TRUE) {
6121 bool loading = FALSE;
6123 foreach_view (view, i) {
6124 update_view(view);
6125 if (view_is_displayed(view) && view->has_scrolled &&
6126 use_scroll_redrawwin)
6127 redrawwin(view->win);
6128 view->has_scrolled = FALSE;
6129 if (view->pipe)
6130 loading = TRUE;
6131 }
6133 /* Update the cursor position. */
6134 if (prompt_position) {
6135 getbegyx(status_win, cursor_y, cursor_x);
6136 cursor_x = prompt_position;
6137 } else {
6138 view = display[current_view];
6139 getbegyx(view->win, cursor_y, cursor_x);
6140 cursor_x = view->width - 1;
6141 cursor_y += view->lineno - view->offset;
6142 }
6143 setsyx(cursor_y, cursor_x);
6145 /* Refresh, accept single keystroke of input */
6146 doupdate();
6147 nodelay(status_win, loading);
6148 key = wgetch(status_win);
6150 /* wgetch() with nodelay() enabled returns ERR when
6151 * there's no input. */
6152 if (key == ERR) {
6154 } else if (key == KEY_RESIZE) {
6155 int height, width;
6157 getmaxyx(stdscr, height, width);
6159 wresize(status_win, 1, width);
6160 mvwin(status_win, height - 1, 0);
6161 wnoutrefresh(status_win);
6162 resize_display();
6163 redraw_display(TRUE);
6165 } else {
6166 input_mode = FALSE;
6167 return key;
6168 }
6169 }
6170 }
6172 static char *
6173 prompt_input(const char *prompt, input_handler handler, void *data)
6174 {
6175 enum input_status status = INPUT_OK;
6176 static char buf[SIZEOF_STR];
6177 size_t pos = 0;
6179 buf[pos] = 0;
6181 while (status == INPUT_OK || status == INPUT_SKIP) {
6182 int key;
6184 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6185 wclrtoeol(status_win);
6187 key = get_input(pos + 1);
6188 switch (key) {
6189 case KEY_RETURN:
6190 case KEY_ENTER:
6191 case '\n':
6192 status = pos ? INPUT_STOP : INPUT_CANCEL;
6193 break;
6195 case KEY_BACKSPACE:
6196 if (pos > 0)
6197 buf[--pos] = 0;
6198 else
6199 status = INPUT_CANCEL;
6200 break;
6202 case KEY_ESC:
6203 status = INPUT_CANCEL;
6204 break;
6206 default:
6207 if (pos >= sizeof(buf)) {
6208 report("Input string too long");
6209 return NULL;
6210 }
6212 status = handler(data, buf, key);
6213 if (status == INPUT_OK)
6214 buf[pos++] = (char) key;
6215 }
6216 }
6218 /* Clear the status window */
6219 status_empty = FALSE;
6220 report("");
6222 if (status == INPUT_CANCEL)
6223 return NULL;
6225 buf[pos++] = 0;
6227 return buf;
6228 }
6230 static enum input_status
6231 prompt_yesno_handler(void *data, char *buf, int c)
6232 {
6233 if (c == 'y' || c == 'Y')
6234 return INPUT_STOP;
6235 if (c == 'n' || c == 'N')
6236 return INPUT_CANCEL;
6237 return INPUT_SKIP;
6238 }
6240 static bool
6241 prompt_yesno(const char *prompt)
6242 {
6243 char prompt2[SIZEOF_STR];
6245 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6246 return FALSE;
6248 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6249 }
6251 static enum input_status
6252 read_prompt_handler(void *data, char *buf, int c)
6253 {
6254 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6255 }
6257 static char *
6258 read_prompt(const char *prompt)
6259 {
6260 return prompt_input(prompt, read_prompt_handler, NULL);
6261 }
6263 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6264 {
6265 enum input_status status = INPUT_OK;
6266 int size = 0;
6268 while (items[size].text)
6269 size++;
6271 while (status == INPUT_OK) {
6272 const struct menu_item *item = &items[*selected];
6273 int key;
6274 int i;
6276 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6277 prompt, *selected + 1, size);
6278 if (item->hotkey)
6279 wprintw(status_win, "[%c] ", (char) item->hotkey);
6280 wprintw(status_win, "%s", item->text);
6281 wclrtoeol(status_win);
6283 key = get_input(COLS - 1);
6284 switch (key) {
6285 case KEY_RETURN:
6286 case KEY_ENTER:
6287 case '\n':
6288 status = INPUT_STOP;
6289 break;
6291 case KEY_LEFT:
6292 case KEY_UP:
6293 *selected = *selected - 1;
6294 if (*selected < 0)
6295 *selected = size - 1;
6296 break;
6298 case KEY_RIGHT:
6299 case KEY_DOWN:
6300 *selected = (*selected + 1) % size;
6301 break;
6303 case KEY_ESC:
6304 status = INPUT_CANCEL;
6305 break;
6307 default:
6308 for (i = 0; items[i].text; i++)
6309 if (items[i].hotkey == key) {
6310 *selected = i;
6311 status = INPUT_STOP;
6312 break;
6313 }
6314 }
6315 }
6317 /* Clear the status window */
6318 status_empty = FALSE;
6319 report("");
6321 return status != INPUT_CANCEL;
6322 }
6324 /*
6325 * Repository properties
6326 */
6328 static struct ref **refs = NULL;
6329 static size_t refs_size = 0;
6330 static struct ref *refs_head = NULL;
6332 static struct ref_list **ref_lists = NULL;
6333 static size_t ref_lists_size = 0;
6335 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6336 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6337 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6339 static int
6340 compare_refs(const void *ref1_, const void *ref2_)
6341 {
6342 const struct ref *ref1 = *(const struct ref **)ref1_;
6343 const struct ref *ref2 = *(const struct ref **)ref2_;
6345 if (ref1->tag != ref2->tag)
6346 return ref2->tag - ref1->tag;
6347 if (ref1->ltag != ref2->ltag)
6348 return ref2->ltag - ref2->ltag;
6349 if (ref1->head != ref2->head)
6350 return ref2->head - ref1->head;
6351 if (ref1->tracked != ref2->tracked)
6352 return ref2->tracked - ref1->tracked;
6353 if (ref1->remote != ref2->remote)
6354 return ref2->remote - ref1->remote;
6355 return strcmp(ref1->name, ref2->name);
6356 }
6358 static void
6359 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6360 {
6361 size_t i;
6363 for (i = 0; i < refs_size; i++)
6364 if (!visitor(data, refs[i]))
6365 break;
6366 }
6368 static struct ref *
6369 get_ref_head()
6370 {
6371 return refs_head;
6372 }
6374 static struct ref_list *
6375 get_ref_list(const char *id)
6376 {
6377 struct ref_list *list;
6378 size_t i;
6380 for (i = 0; i < ref_lists_size; i++)
6381 if (!strcmp(id, ref_lists[i]->id))
6382 return ref_lists[i];
6384 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6385 return NULL;
6386 list = calloc(1, sizeof(*list));
6387 if (!list)
6388 return NULL;
6390 for (i = 0; i < refs_size; i++) {
6391 if (!strcmp(id, refs[i]->id) &&
6392 realloc_refs_list(&list->refs, list->size, 1))
6393 list->refs[list->size++] = refs[i];
6394 }
6396 if (!list->refs) {
6397 free(list);
6398 return NULL;
6399 }
6401 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6402 ref_lists[ref_lists_size++] = list;
6403 return list;
6404 }
6406 static int
6407 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6408 {
6409 struct ref *ref = NULL;
6410 bool tag = FALSE;
6411 bool ltag = FALSE;
6412 bool remote = FALSE;
6413 bool tracked = FALSE;
6414 bool head = FALSE;
6415 int from = 0, to = refs_size - 1;
6417 if (!prefixcmp(name, "refs/tags/")) {
6418 if (!suffixcmp(name, namelen, "^{}")) {
6419 namelen -= 3;
6420 name[namelen] = 0;
6421 } else {
6422 ltag = TRUE;
6423 }
6425 tag = TRUE;
6426 namelen -= STRING_SIZE("refs/tags/");
6427 name += STRING_SIZE("refs/tags/");
6429 } else if (!prefixcmp(name, "refs/remotes/")) {
6430 remote = TRUE;
6431 namelen -= STRING_SIZE("refs/remotes/");
6432 name += STRING_SIZE("refs/remotes/");
6433 tracked = !strcmp(opt_remote, name);
6435 } else if (!prefixcmp(name, "refs/heads/")) {
6436 namelen -= STRING_SIZE("refs/heads/");
6437 name += STRING_SIZE("refs/heads/");
6438 if (!strncmp(opt_head, name, namelen))
6439 return OK;
6441 } else if (!strcmp(name, "HEAD")) {
6442 head = TRUE;
6443 if (*opt_head) {
6444 namelen = strlen(opt_head);
6445 name = opt_head;
6446 }
6447 }
6449 /* If we are reloading or it's an annotated tag, replace the
6450 * previous SHA1 with the resolved commit id; relies on the fact
6451 * git-ls-remote lists the commit id of an annotated tag right
6452 * before the commit id it points to. */
6453 while (from <= to) {
6454 size_t pos = (to + from) / 2;
6455 int cmp = strcmp(name, refs[pos]->name);
6457 if (!cmp) {
6458 ref = refs[pos];
6459 break;
6460 }
6462 if (cmp < 0)
6463 to = pos - 1;
6464 else
6465 from = pos + 1;
6466 }
6468 if (!ref) {
6469 if (!realloc_refs(&refs, refs_size, 1))
6470 return ERR;
6471 ref = calloc(1, sizeof(*ref) + namelen);
6472 if (!ref)
6473 return ERR;
6474 memmove(refs + from + 1, refs + from,
6475 (refs_size - from) * sizeof(*refs));
6476 refs[from] = ref;
6477 strncpy(ref->name, name, namelen);
6478 refs_size++;
6479 }
6481 ref->head = head;
6482 ref->tag = tag;
6483 ref->ltag = ltag;
6484 ref->remote = remote;
6485 ref->tracked = tracked;
6486 string_copy_rev(ref->id, id);
6488 if (head)
6489 refs_head = ref;
6490 return OK;
6491 }
6493 static int
6494 load_refs(void)
6495 {
6496 const char *head_argv[] = {
6497 "git", "symbolic-ref", "HEAD", NULL
6498 };
6499 static const char *ls_remote_argv[SIZEOF_ARG] = {
6500 "git", "ls-remote", opt_git_dir, NULL
6501 };
6502 static bool init = FALSE;
6503 size_t i;
6505 if (!init) {
6506 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6507 die("TIG_LS_REMOTE contains too many arguments");
6508 init = TRUE;
6509 }
6511 if (!*opt_git_dir)
6512 return OK;
6514 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6515 !prefixcmp(opt_head, "refs/heads/")) {
6516 char *offset = opt_head + STRING_SIZE("refs/heads/");
6518 memmove(opt_head, offset, strlen(offset) + 1);
6519 }
6521 refs_head = NULL;
6522 for (i = 0; i < refs_size; i++)
6523 refs[i]->id[0] = 0;
6525 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6526 return ERR;
6528 /* Update the ref lists to reflect changes. */
6529 for (i = 0; i < ref_lists_size; i++) {
6530 struct ref_list *list = ref_lists[i];
6531 size_t old, new;
6533 for (old = new = 0; old < list->size; old++)
6534 if (!strcmp(list->id, list->refs[old]->id))
6535 list->refs[new++] = list->refs[old];
6536 list->size = new;
6537 }
6539 return OK;
6540 }
6542 static void
6543 set_remote_branch(const char *name, const char *value, size_t valuelen)
6544 {
6545 if (!strcmp(name, ".remote")) {
6546 string_ncopy(opt_remote, value, valuelen);
6548 } else if (*opt_remote && !strcmp(name, ".merge")) {
6549 size_t from = strlen(opt_remote);
6551 if (!prefixcmp(value, "refs/heads/"))
6552 value += STRING_SIZE("refs/heads/");
6554 if (!string_format_from(opt_remote, &from, "/%s", value))
6555 opt_remote[0] = 0;
6556 }
6557 }
6559 static void
6560 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6561 {
6562 const char *argv[SIZEOF_ARG] = { name, "=" };
6563 int argc = 1 + (cmd == option_set_command);
6564 enum option_code error;
6566 if (!argv_from_string(argv, &argc, value))
6567 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6568 else
6569 error = cmd(argc, argv);
6571 if (error != OPT_OK)
6572 warn("Option 'tig.%s': %s", name, option_errors[error]);
6573 }
6575 static bool
6576 set_environment_variable(const char *name, const char *value)
6577 {
6578 size_t len = strlen(name) + 1 + strlen(value) + 1;
6579 char *env = malloc(len);
6581 if (env &&
6582 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6583 putenv(env) == 0)
6584 return TRUE;
6585 free(env);
6586 return FALSE;
6587 }
6589 static void
6590 set_work_tree(const char *value)
6591 {
6592 char cwd[SIZEOF_STR];
6594 if (!getcwd(cwd, sizeof(cwd)))
6595 die("Failed to get cwd path: %s", strerror(errno));
6596 if (chdir(opt_git_dir) < 0)
6597 die("Failed to chdir(%s): %s", strerror(errno));
6598 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6599 die("Failed to get git path: %s", strerror(errno));
6600 if (chdir(cwd) < 0)
6601 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6602 if (chdir(value) < 0)
6603 die("Failed to chdir(%s): %s", value, strerror(errno));
6604 if (!getcwd(cwd, sizeof(cwd)))
6605 die("Failed to get cwd path: %s", strerror(errno));
6606 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6607 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6608 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6609 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6610 opt_is_inside_work_tree = TRUE;
6611 }
6613 static int
6614 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6615 {
6616 if (!strcmp(name, "i18n.commitencoding"))
6617 string_ncopy(opt_encoding, value, valuelen);
6619 else if (!strcmp(name, "core.editor"))
6620 string_ncopy(opt_editor, value, valuelen);
6622 else if (!strcmp(name, "core.worktree"))
6623 set_work_tree(value);
6625 else if (!prefixcmp(name, "tig.color."))
6626 set_repo_config_option(name + 10, value, option_color_command);
6628 else if (!prefixcmp(name, "tig.bind."))
6629 set_repo_config_option(name + 9, value, option_bind_command);
6631 else if (!prefixcmp(name, "tig."))
6632 set_repo_config_option(name + 4, value, option_set_command);
6634 else if (*opt_head && !prefixcmp(name, "branch.") &&
6635 !strncmp(name + 7, opt_head, strlen(opt_head)))
6636 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6638 return OK;
6639 }
6641 static int
6642 load_git_config(void)
6643 {
6644 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6646 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6647 }
6649 static int
6650 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6651 {
6652 if (!opt_git_dir[0]) {
6653 string_ncopy(opt_git_dir, name, namelen);
6655 } else if (opt_is_inside_work_tree == -1) {
6656 /* This can be 3 different values depending on the
6657 * version of git being used. If git-rev-parse does not
6658 * understand --is-inside-work-tree it will simply echo
6659 * the option else either "true" or "false" is printed.
6660 * Default to true for the unknown case. */
6661 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6663 } else if (*name == '.') {
6664 string_ncopy(opt_cdup, name, namelen);
6666 } else {
6667 string_ncopy(opt_prefix, name, namelen);
6668 }
6670 return OK;
6671 }
6673 static int
6674 load_repo_info(void)
6675 {
6676 const char *rev_parse_argv[] = {
6677 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6678 "--show-cdup", "--show-prefix", NULL
6679 };
6681 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6682 }
6685 /*
6686 * Main
6687 */
6689 static const char usage[] =
6690 "tig " TIG_VERSION " (" __DATE__ ")\n"
6691 "\n"
6692 "Usage: tig [options] [revs] [--] [paths]\n"
6693 " or: tig show [options] [revs] [--] [paths]\n"
6694 " or: tig blame [options] [rev] [--] path\n"
6695 " or: tig status\n"
6696 " or: tig < [git command output]\n"
6697 "\n"
6698 "Options:\n"
6699 " -v, --version Show version and exit\n"
6700 " -h, --help Show help message and exit";
6702 static void __NORETURN
6703 quit(int sig)
6704 {
6705 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6706 if (cursed)
6707 endwin();
6708 exit(0);
6709 }
6711 static void __NORETURN
6712 die(const char *err, ...)
6713 {
6714 va_list args;
6716 endwin();
6718 va_start(args, err);
6719 fputs("tig: ", stderr);
6720 vfprintf(stderr, err, args);
6721 fputs("\n", stderr);
6722 va_end(args);
6724 exit(1);
6725 }
6727 static void
6728 warn(const char *msg, ...)
6729 {
6730 va_list args;
6732 va_start(args, msg);
6733 fputs("tig warning: ", stderr);
6734 vfprintf(stderr, msg, args);
6735 fputs("\n", stderr);
6736 va_end(args);
6737 }
6739 static int
6740 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6741 {
6742 const char ***filter_args = data;
6744 return argv_append(filter_args, name) ? OK : ERR;
6745 }
6747 static void
6748 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6749 {
6750 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6751 const char **all_argv = NULL;
6753 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6754 !argv_append_array(&all_argv, argv) ||
6755 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6756 die("Failed to split arguments");
6757 argv_free(all_argv);
6758 free(all_argv);
6759 }
6761 static void
6762 filter_options(const char *argv[])
6763 {
6764 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6765 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6766 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6767 }
6769 static enum request
6770 parse_options(int argc, const char *argv[])
6771 {
6772 enum request request = REQ_VIEW_MAIN;
6773 const char *subcommand;
6774 bool seen_dashdash = FALSE;
6775 const char **filter_argv = NULL;
6776 int i;
6778 if (!isatty(STDIN_FILENO))
6779 return REQ_VIEW_PAGER;
6781 if (argc <= 1)
6782 return REQ_VIEW_MAIN;
6784 subcommand = argv[1];
6785 if (!strcmp(subcommand, "status")) {
6786 if (argc > 2)
6787 warn("ignoring arguments after `%s'", subcommand);
6788 return REQ_VIEW_STATUS;
6790 } else if (!strcmp(subcommand, "blame")) {
6791 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6792 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6793 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6795 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6796 die("invalid number of options to blame\n\n%s", usage);
6798 if (opt_rev_argv) {
6799 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6800 }
6802 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6803 return REQ_VIEW_BLAME;
6805 } else if (!strcmp(subcommand, "show")) {
6806 request = REQ_VIEW_DIFF;
6808 } else {
6809 subcommand = NULL;
6810 }
6812 for (i = 1 + !!subcommand; i < argc; i++) {
6813 const char *opt = argv[i];
6815 if (seen_dashdash) {
6816 argv_append(&opt_file_argv, opt);
6817 continue;
6819 } else if (!strcmp(opt, "--")) {
6820 seen_dashdash = TRUE;
6821 continue;
6823 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6824 printf("tig version %s\n", TIG_VERSION);
6825 quit(0);
6827 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6828 printf("%s\n", usage);
6829 quit(0);
6831 } else if (!strcmp(opt, "--all")) {
6832 argv_append(&opt_rev_argv, opt);
6833 continue;
6834 }
6836 if (!argv_append(&filter_argv, opt))
6837 die("command too long");
6838 }
6840 if (filter_argv)
6841 filter_options(filter_argv);
6843 return request;
6844 }
6846 int
6847 main(int argc, const char *argv[])
6848 {
6849 const char *codeset = "UTF-8";
6850 enum request request = parse_options(argc, argv);
6851 struct view *view;
6853 signal(SIGINT, quit);
6854 signal(SIGPIPE, SIG_IGN);
6856 if (setlocale(LC_ALL, "")) {
6857 codeset = nl_langinfo(CODESET);
6858 }
6860 if (load_repo_info() == ERR)
6861 die("Failed to load repo info.");
6863 if (load_options() == ERR)
6864 die("Failed to load user config.");
6866 if (load_git_config() == ERR)
6867 die("Failed to load repo config.");
6869 /* Require a git repository unless when running in pager mode. */
6870 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6871 die("Not a git repository");
6873 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6874 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6875 if (opt_iconv_in == ICONV_NONE)
6876 die("Failed to initialize character set conversion");
6877 }
6879 if (codeset && strcmp(codeset, "UTF-8")) {
6880 opt_iconv_out = iconv_open(codeset, "UTF-8");
6881 if (opt_iconv_out == ICONV_NONE)
6882 die("Failed to initialize character set conversion");
6883 }
6885 if (load_refs() == ERR)
6886 die("Failed to load refs.");
6888 init_display();
6890 while (view_driver(display[current_view], request)) {
6891 int key = get_input(0);
6893 view = display[current_view];
6894 request = get_keybinding(view->keymap, key);
6896 /* Some low-level request handling. This keeps access to
6897 * status_win restricted. */
6898 switch (request) {
6899 case REQ_NONE:
6900 report("Unknown key, press %s for help",
6901 get_key(view->keymap, REQ_VIEW_HELP));
6902 break;
6903 case REQ_PROMPT:
6904 {
6905 char *cmd = read_prompt(":");
6907 if (cmd && isdigit(*cmd)) {
6908 int lineno = view->lineno + 1;
6910 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6911 select_view_line(view, lineno - 1);
6912 report("");
6913 } else {
6914 report("Unable to parse '%s' as a line number", cmd);
6915 }
6917 } else if (cmd) {
6918 struct view *next = VIEW(REQ_VIEW_PAGER);
6919 const char *argv[SIZEOF_ARG] = { "git" };
6920 int argc = 1;
6922 /* When running random commands, initially show the
6923 * command in the title. However, it maybe later be
6924 * overwritten if a commit line is selected. */
6925 string_ncopy(next->ref, cmd, strlen(cmd));
6927 if (!argv_from_string(argv, &argc, cmd)) {
6928 report("Too many arguments");
6929 } else {
6930 open_argv(view, next, argv, NULL, OPEN_DEFAULT);
6931 }
6932 }
6934 request = REQ_NONE;
6935 break;
6936 }
6937 case REQ_SEARCH:
6938 case REQ_SEARCH_BACK:
6939 {
6940 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6941 char *search = read_prompt(prompt);
6943 if (search)
6944 string_ncopy(opt_search, search, strlen(search));
6945 else if (*opt_search)
6946 request = request == REQ_SEARCH ?
6947 REQ_FIND_NEXT :
6948 REQ_FIND_PREV;
6949 else
6950 request = REQ_NONE;
6951 break;
6952 }
6953 default:
6954 break;
6955 }
6956 }
6958 quit(0);
6960 return 0;
6961 }