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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)
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 return draw_field(view, LINE_AUTHOR, text, opt_author_cols, trim);
1655 }
1657 static bool
1658 draw_mode(struct view *view, mode_t mode)
1659 {
1660 const char *str = mkmode(mode);
1662 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
1663 }
1665 static bool
1666 draw_lineno(struct view *view, unsigned int lineno)
1667 {
1668 char number[10];
1669 int digits3 = view->digits < 3 ? 3 : view->digits;
1670 int max = MIN(VIEW_MAX_LEN(view), digits3);
1671 char *text = NULL;
1672 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
1674 lineno += view->offset + 1;
1675 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1676 static char fmt[] = "%1ld";
1678 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
1679 if (string_format(number, fmt, lineno))
1680 text = number;
1681 }
1682 if (text)
1683 draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
1684 else
1685 draw_space(view, LINE_LINE_NUMBER, max, digits3);
1686 return draw_graphic(view, LINE_DEFAULT, &separator, 1, TRUE);
1687 }
1689 static bool
1690 draw_refs(struct view *view, struct ref_list *refs)
1691 {
1692 size_t i;
1694 if (!opt_show_refs || !refs)
1695 return FALSE;
1697 for (i = 0; i < refs->size; i++) {
1698 struct ref *ref = refs->refs[i];
1699 enum line_type type;
1701 if (ref->head)
1702 type = LINE_MAIN_HEAD;
1703 else if (ref->ltag)
1704 type = LINE_MAIN_LOCAL_TAG;
1705 else if (ref->tag)
1706 type = LINE_MAIN_TAG;
1707 else if (ref->tracked)
1708 type = LINE_MAIN_TRACKED;
1709 else if (ref->remote)
1710 type = LINE_MAIN_REMOTE;
1711 else
1712 type = LINE_MAIN_REF;
1714 if (draw_text(view, type, "[") ||
1715 draw_text(view, type, ref->name) ||
1716 draw_text(view, type, "]"))
1717 return TRUE;
1719 if (draw_text(view, LINE_DEFAULT, " "))
1720 return TRUE;
1721 }
1723 return FALSE;
1724 }
1726 static bool
1727 draw_view_line(struct view *view, unsigned int lineno)
1728 {
1729 struct line *line;
1730 bool selected = (view->offset + lineno == view->lineno);
1732 assert(view_is_displayed(view));
1734 if (view->offset + lineno >= view->lines)
1735 return FALSE;
1737 line = &view->line[view->offset + lineno];
1739 wmove(view->win, lineno, 0);
1740 if (line->cleareol)
1741 wclrtoeol(view->win);
1742 view->col = 0;
1743 view->curline = line;
1744 view->curtype = LINE_NONE;
1745 line->selected = FALSE;
1746 line->dirty = line->cleareol = 0;
1748 if (selected) {
1749 set_view_attr(view, LINE_CURSOR);
1750 line->selected = TRUE;
1751 view->ops->select(view, line);
1752 }
1754 return view->ops->draw(view, line, lineno);
1755 }
1757 static void
1758 redraw_view_dirty(struct view *view)
1759 {
1760 bool dirty = FALSE;
1761 int lineno;
1763 for (lineno = 0; lineno < view->height; lineno++) {
1764 if (view->offset + lineno >= view->lines)
1765 break;
1766 if (!view->line[view->offset + lineno].dirty)
1767 continue;
1768 dirty = TRUE;
1769 if (!draw_view_line(view, lineno))
1770 break;
1771 }
1773 if (!dirty)
1774 return;
1775 wnoutrefresh(view->win);
1776 }
1778 static void
1779 redraw_view_from(struct view *view, int lineno)
1780 {
1781 assert(0 <= lineno && lineno < view->height);
1783 for (; lineno < view->height; lineno++) {
1784 if (!draw_view_line(view, lineno))
1785 break;
1786 }
1788 wnoutrefresh(view->win);
1789 }
1791 static void
1792 redraw_view(struct view *view)
1793 {
1794 werase(view->win);
1795 redraw_view_from(view, 0);
1796 }
1799 static void
1800 update_view_title(struct view *view)
1801 {
1802 char buf[SIZEOF_STR];
1803 char state[SIZEOF_STR];
1804 size_t bufpos = 0, statelen = 0;
1805 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
1807 assert(view_is_displayed(view));
1809 if (view->type != VIEW_STATUS && view->lines) {
1810 unsigned int view_lines = view->offset + view->height;
1811 unsigned int lines = view->lines
1812 ? MIN(view_lines, view->lines) * 100 / view->lines
1813 : 0;
1815 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
1816 view->ops->type,
1817 view->lineno + 1,
1818 view->lines,
1819 lines);
1821 }
1823 if (view->pipe) {
1824 time_t secs = time(NULL) - view->start_time;
1826 /* Three git seconds are a long time ... */
1827 if (secs > 2)
1828 string_format_from(state, &statelen, " loading %lds", secs);
1829 }
1831 string_format_from(buf, &bufpos, "[%s]", view->name);
1832 if (*view->ref && bufpos < view->width) {
1833 size_t refsize = strlen(view->ref);
1834 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1836 if (minsize < view->width)
1837 refsize = view->width - minsize + 7;
1838 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1839 }
1841 if (statelen && bufpos < view->width) {
1842 string_format_from(buf, &bufpos, "%s", state);
1843 }
1845 if (view == display[current_view])
1846 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
1847 else
1848 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
1850 mvwaddnstr(window, 0, 0, buf, bufpos);
1851 wclrtoeol(window);
1852 wnoutrefresh(window);
1853 }
1855 static int
1856 apply_step(double step, int value)
1857 {
1858 if (step >= 1)
1859 return (int) step;
1860 value *= step + 0.01;
1861 return value ? value : 1;
1862 }
1864 static void
1865 resize_display(void)
1866 {
1867 int offset, i;
1868 struct view *base = display[0];
1869 struct view *view = display[1] ? display[1] : display[0];
1871 /* Setup window dimensions */
1873 getmaxyx(stdscr, base->height, base->width);
1875 /* Make room for the status window. */
1876 base->height -= 1;
1878 if (view != base) {
1879 /* Horizontal split. */
1880 view->width = base->width;
1881 view->height = apply_step(opt_scale_split_view, base->height);
1882 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
1883 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
1884 base->height -= view->height;
1886 /* Make room for the title bar. */
1887 view->height -= 1;
1888 }
1890 /* Make room for the title bar. */
1891 base->height -= 1;
1893 offset = 0;
1895 foreach_displayed_view (view, i) {
1896 if (!display_win[i]) {
1897 display_win[i] = newwin(view->height, view->width, offset, 0);
1898 if (!display_win[i])
1899 die("Failed to create %s view", view->name);
1901 scrollok(display_win[i], FALSE);
1903 display_title[i] = newwin(1, view->width, offset + view->height, 0);
1904 if (!display_title[i])
1905 die("Failed to create title window");
1907 } else {
1908 wresize(display_win[i], view->height, view->width);
1909 mvwin(display_win[i], offset, 0);
1910 mvwin(display_title[i], offset + view->height, 0);
1911 }
1913 view->win = display_win[i];
1915 offset += view->height + 1;
1916 }
1917 }
1919 static void
1920 redraw_display(bool clear)
1921 {
1922 struct view *view;
1923 int i;
1925 foreach_displayed_view (view, i) {
1926 if (clear)
1927 wclear(view->win);
1928 redraw_view(view);
1929 update_view_title(view);
1930 }
1931 }
1934 /*
1935 * Option management
1936 */
1938 #define TOGGLE_MENU \
1939 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
1940 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
1941 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
1942 TOGGLE_(GRAPHIC, '~', "graphics", &opt_line_graphics, graphic_map) \
1943 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
1944 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
1946 static void
1947 toggle_option(enum request request)
1948 {
1949 const struct {
1950 enum request request;
1951 const struct enum_map *map;
1952 size_t map_size;
1953 } data[] = {
1954 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
1955 TOGGLE_MENU
1956 #undef TOGGLE_
1957 };
1958 const struct menu_item menu[] = {
1959 #define TOGGLE_(id, key, help, value, map) { key, help, value },
1960 TOGGLE_MENU
1961 #undef TOGGLE_
1962 { 0 }
1963 };
1964 int i = 0;
1966 if (request == REQ_OPTIONS) {
1967 if (!prompt_menu("Toggle option", menu, &i))
1968 return;
1969 } else {
1970 while (i < ARRAY_SIZE(data) && data[i].request != request)
1971 i++;
1972 if (i >= ARRAY_SIZE(data))
1973 die("Invalid request (%d)", request);
1974 }
1976 if (data[i].map != NULL) {
1977 unsigned int *opt = menu[i].data;
1979 *opt = (*opt + 1) % data[i].map_size;
1980 redraw_display(FALSE);
1981 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
1983 } else {
1984 bool *option = menu[i].data;
1986 *option = !*option;
1987 redraw_display(FALSE);
1988 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
1989 }
1990 }
1992 static void
1993 maximize_view(struct view *view, bool redraw)
1994 {
1995 memset(display, 0, sizeof(display));
1996 current_view = 0;
1997 display[current_view] = view;
1998 resize_display();
1999 if (redraw) {
2000 redraw_display(FALSE);
2001 report("");
2002 }
2003 }
2006 /*
2007 * Navigation
2008 */
2010 static bool
2011 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2012 {
2013 if (lineno >= view->lines)
2014 lineno = view->lines > 0 ? view->lines - 1 : 0;
2016 if (offset > lineno || offset + view->height <= lineno) {
2017 unsigned long half = view->height / 2;
2019 if (lineno > half)
2020 offset = lineno - half;
2021 else
2022 offset = 0;
2023 }
2025 if (offset != view->offset || lineno != view->lineno) {
2026 view->offset = offset;
2027 view->lineno = lineno;
2028 return TRUE;
2029 }
2031 return FALSE;
2032 }
2034 /* Scrolling backend */
2035 static void
2036 do_scroll_view(struct view *view, int lines)
2037 {
2038 bool redraw_current_line = FALSE;
2040 /* The rendering expects the new offset. */
2041 view->offset += lines;
2043 assert(0 <= view->offset && view->offset < view->lines);
2044 assert(lines);
2046 /* Move current line into the view. */
2047 if (view->lineno < view->offset) {
2048 view->lineno = view->offset;
2049 redraw_current_line = TRUE;
2050 } else if (view->lineno >= view->offset + view->height) {
2051 view->lineno = view->offset + view->height - 1;
2052 redraw_current_line = TRUE;
2053 }
2055 assert(view->offset <= view->lineno && view->lineno < view->lines);
2057 /* Redraw the whole screen if scrolling is pointless. */
2058 if (view->height < ABS(lines)) {
2059 redraw_view(view);
2061 } else {
2062 int line = lines > 0 ? view->height - lines : 0;
2063 int end = line + ABS(lines);
2065 scrollok(view->win, TRUE);
2066 wscrl(view->win, lines);
2067 scrollok(view->win, FALSE);
2069 while (line < end && draw_view_line(view, line))
2070 line++;
2072 if (redraw_current_line)
2073 draw_view_line(view, view->lineno - view->offset);
2074 wnoutrefresh(view->win);
2075 }
2077 view->has_scrolled = TRUE;
2078 report("");
2079 }
2081 /* Scroll frontend */
2082 static void
2083 scroll_view(struct view *view, enum request request)
2084 {
2085 int lines = 1;
2087 assert(view_is_displayed(view));
2089 switch (request) {
2090 case REQ_SCROLL_FIRST_COL:
2091 view->yoffset = 0;
2092 redraw_view_from(view, 0);
2093 report("");
2094 return;
2095 case REQ_SCROLL_LEFT:
2096 if (view->yoffset == 0) {
2097 report("Cannot scroll beyond the first column");
2098 return;
2099 }
2100 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2101 view->yoffset = 0;
2102 else
2103 view->yoffset -= apply_step(opt_hscroll, view->width);
2104 redraw_view_from(view, 0);
2105 report("");
2106 return;
2107 case REQ_SCROLL_RIGHT:
2108 view->yoffset += apply_step(opt_hscroll, view->width);
2109 redraw_view(view);
2110 report("");
2111 return;
2112 case REQ_SCROLL_PAGE_DOWN:
2113 lines = view->height;
2114 case REQ_SCROLL_LINE_DOWN:
2115 if (view->offset + lines > view->lines)
2116 lines = view->lines - view->offset;
2118 if (lines == 0 || view->offset + view->height >= view->lines) {
2119 report("Cannot scroll beyond the last line");
2120 return;
2121 }
2122 break;
2124 case REQ_SCROLL_PAGE_UP:
2125 lines = view->height;
2126 case REQ_SCROLL_LINE_UP:
2127 if (lines > view->offset)
2128 lines = view->offset;
2130 if (lines == 0) {
2131 report("Cannot scroll beyond the first line");
2132 return;
2133 }
2135 lines = -lines;
2136 break;
2138 default:
2139 die("request %d not handled in switch", request);
2140 }
2142 do_scroll_view(view, lines);
2143 }
2145 /* Cursor moving */
2146 static void
2147 move_view(struct view *view, enum request request)
2148 {
2149 int scroll_steps = 0;
2150 int steps;
2152 switch (request) {
2153 case REQ_MOVE_FIRST_LINE:
2154 steps = -view->lineno;
2155 break;
2157 case REQ_MOVE_LAST_LINE:
2158 steps = view->lines - view->lineno - 1;
2159 break;
2161 case REQ_MOVE_PAGE_UP:
2162 steps = view->height > view->lineno
2163 ? -view->lineno : -view->height;
2164 break;
2166 case REQ_MOVE_PAGE_DOWN:
2167 steps = view->lineno + view->height >= view->lines
2168 ? view->lines - view->lineno - 1 : view->height;
2169 break;
2171 case REQ_MOVE_UP:
2172 steps = -1;
2173 break;
2175 case REQ_MOVE_DOWN:
2176 steps = 1;
2177 break;
2179 default:
2180 die("request %d not handled in switch", request);
2181 }
2183 if (steps <= 0 && view->lineno == 0) {
2184 report("Cannot move beyond the first line");
2185 return;
2187 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2188 report("Cannot move beyond the last line");
2189 return;
2190 }
2192 /* Move the current line */
2193 view->lineno += steps;
2194 assert(0 <= view->lineno && view->lineno < view->lines);
2196 /* Check whether the view needs to be scrolled */
2197 if (view->lineno < view->offset ||
2198 view->lineno >= view->offset + view->height) {
2199 scroll_steps = steps;
2200 if (steps < 0 && -steps > view->offset) {
2201 scroll_steps = -view->offset;
2203 } else if (steps > 0) {
2204 if (view->lineno == view->lines - 1 &&
2205 view->lines > view->height) {
2206 scroll_steps = view->lines - view->offset - 1;
2207 if (scroll_steps >= view->height)
2208 scroll_steps -= view->height - 1;
2209 }
2210 }
2211 }
2213 if (!view_is_displayed(view)) {
2214 view->offset += scroll_steps;
2215 assert(0 <= view->offset && view->offset < view->lines);
2216 view->ops->select(view, &view->line[view->lineno]);
2217 return;
2218 }
2220 /* Repaint the old "current" line if we be scrolling */
2221 if (ABS(steps) < view->height)
2222 draw_view_line(view, view->lineno - steps - view->offset);
2224 if (scroll_steps) {
2225 do_scroll_view(view, scroll_steps);
2226 return;
2227 }
2229 /* Draw the current line */
2230 draw_view_line(view, view->lineno - view->offset);
2232 wnoutrefresh(view->win);
2233 report("");
2234 }
2237 /*
2238 * Searching
2239 */
2241 static void search_view(struct view *view, enum request request);
2243 static bool
2244 grep_text(struct view *view, const char *text[])
2245 {
2246 regmatch_t pmatch;
2247 size_t i;
2249 for (i = 0; text[i]; i++)
2250 if (*text[i] &&
2251 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2252 return TRUE;
2253 return FALSE;
2254 }
2256 static void
2257 select_view_line(struct view *view, unsigned long lineno)
2258 {
2259 unsigned long old_lineno = view->lineno;
2260 unsigned long old_offset = view->offset;
2262 if (goto_view_line(view, view->offset, lineno)) {
2263 if (view_is_displayed(view)) {
2264 if (old_offset != view->offset) {
2265 redraw_view(view);
2266 } else {
2267 draw_view_line(view, old_lineno - view->offset);
2268 draw_view_line(view, view->lineno - view->offset);
2269 wnoutrefresh(view->win);
2270 }
2271 } else {
2272 view->ops->select(view, &view->line[view->lineno]);
2273 }
2274 }
2275 }
2277 static void
2278 find_next(struct view *view, enum request request)
2279 {
2280 unsigned long lineno = view->lineno;
2281 int direction;
2283 if (!*view->grep) {
2284 if (!*opt_search)
2285 report("No previous search");
2286 else
2287 search_view(view, request);
2288 return;
2289 }
2291 switch (request) {
2292 case REQ_SEARCH:
2293 case REQ_FIND_NEXT:
2294 direction = 1;
2295 break;
2297 case REQ_SEARCH_BACK:
2298 case REQ_FIND_PREV:
2299 direction = -1;
2300 break;
2302 default:
2303 return;
2304 }
2306 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2307 lineno += direction;
2309 /* Note, lineno is unsigned long so will wrap around in which case it
2310 * will become bigger than view->lines. */
2311 for (; lineno < view->lines; lineno += direction) {
2312 if (view->ops->grep(view, &view->line[lineno])) {
2313 select_view_line(view, lineno);
2314 report("Line %ld matches '%s'", lineno + 1, view->grep);
2315 return;
2316 }
2317 }
2319 report("No match found for '%s'", view->grep);
2320 }
2322 static void
2323 search_view(struct view *view, enum request request)
2324 {
2325 int regex_err;
2327 if (view->regex) {
2328 regfree(view->regex);
2329 *view->grep = 0;
2330 } else {
2331 view->regex = calloc(1, sizeof(*view->regex));
2332 if (!view->regex)
2333 return;
2334 }
2336 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2337 if (regex_err != 0) {
2338 char buf[SIZEOF_STR] = "unknown error";
2340 regerror(regex_err, view->regex, buf, sizeof(buf));
2341 report("Search failed: %s", buf);
2342 return;
2343 }
2345 string_copy(view->grep, opt_search);
2347 find_next(view, request);
2348 }
2350 /*
2351 * Incremental updating
2352 */
2354 static void
2355 reset_view(struct view *view)
2356 {
2357 int i;
2359 for (i = 0; i < view->lines; i++)
2360 free(view->line[i].data);
2361 free(view->line);
2363 view->p_offset = view->offset;
2364 view->p_yoffset = view->yoffset;
2365 view->p_lineno = view->lineno;
2367 view->line = NULL;
2368 view->offset = 0;
2369 view->yoffset = 0;
2370 view->lines = 0;
2371 view->lineno = 0;
2372 view->vid[0] = 0;
2373 view->update_secs = 0;
2374 }
2376 static const char *
2377 format_arg(const char *name)
2378 {
2379 static struct {
2380 const char *name;
2381 size_t namelen;
2382 const char *value;
2383 const char *value_if_empty;
2384 } vars[] = {
2385 #define FORMAT_VAR(name, value, value_if_empty) \
2386 { name, STRING_SIZE(name), value, value_if_empty }
2387 FORMAT_VAR("%(directory)", opt_path, "."),
2388 FORMAT_VAR("%(file)", opt_file, ""),
2389 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2390 FORMAT_VAR("%(head)", ref_head, ""),
2391 FORMAT_VAR("%(commit)", ref_commit, ""),
2392 FORMAT_VAR("%(blob)", ref_blob, ""),
2393 FORMAT_VAR("%(branch)", ref_branch, ""),
2394 };
2395 int i;
2397 for (i = 0; i < ARRAY_SIZE(vars); i++)
2398 if (!strncmp(name, vars[i].name, vars[i].namelen))
2399 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2401 report("Unknown replacement: `%s`", name);
2402 return NULL;
2403 }
2405 static bool
2406 format_argv(const char ***dst_argv, const char *src_argv[], bool first)
2407 {
2408 char buf[SIZEOF_STR];
2409 int argc;
2411 argv_free(*dst_argv);
2413 for (argc = 0; src_argv[argc]; argc++) {
2414 const char *arg = src_argv[argc];
2415 size_t bufpos = 0;
2417 if (!strcmp(arg, "%(fileargs)")) {
2418 if (!argv_append_array(dst_argv, opt_file_argv))
2419 break;
2420 continue;
2422 } else if (!strcmp(arg, "%(diffargs)")) {
2423 if (!argv_append_array(dst_argv, opt_diff_argv))
2424 break;
2425 continue;
2427 } else if (!strcmp(arg, "%(blameargs)")) {
2428 if (!argv_append_array(dst_argv, opt_blame_argv))
2429 break;
2430 continue;
2432 } else if (!strcmp(arg, "%(revargs)") ||
2433 (first && !strcmp(arg, "%(commit)"))) {
2434 if (!argv_append_array(dst_argv, opt_rev_argv))
2435 break;
2436 continue;
2437 }
2439 while (arg) {
2440 char *next = strstr(arg, "%(");
2441 int len = next - arg;
2442 const char *value;
2444 if (!next) {
2445 len = strlen(arg);
2446 value = "";
2448 } else {
2449 value = format_arg(next);
2451 if (!value) {
2452 return FALSE;
2453 }
2454 }
2456 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2457 return FALSE;
2459 arg = next ? strchr(next, ')') + 1 : NULL;
2460 }
2462 if (!argv_append(dst_argv, buf))
2463 break;
2464 }
2466 return src_argv[argc] == NULL;
2467 }
2469 static bool
2470 restore_view_position(struct view *view)
2471 {
2472 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2473 return FALSE;
2475 /* Changing the view position cancels the restoring. */
2476 /* FIXME: Changing back to the first line is not detected. */
2477 if (view->offset != 0 || view->lineno != 0) {
2478 view->p_restore = FALSE;
2479 return FALSE;
2480 }
2482 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2483 view_is_displayed(view))
2484 werase(view->win);
2486 view->yoffset = view->p_yoffset;
2487 view->p_restore = FALSE;
2489 return TRUE;
2490 }
2492 static void
2493 end_update(struct view *view, bool force)
2494 {
2495 if (!view->pipe)
2496 return;
2497 while (!view->ops->read(view, NULL))
2498 if (!force)
2499 return;
2500 if (force)
2501 io_kill(view->pipe);
2502 io_done(view->pipe);
2503 view->pipe = NULL;
2504 }
2506 static void
2507 setup_update(struct view *view, const char *vid)
2508 {
2509 reset_view(view);
2510 string_copy_rev(view->vid, vid);
2511 view->pipe = &view->io;
2512 view->start_time = time(NULL);
2513 }
2515 static bool
2516 begin_update(struct view *view, const char *dir, const char **argv, enum open_flags flags)
2517 {
2518 bool extra = !!(flags & (OPEN_EXTRA));
2519 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED | OPEN_EXTRA));
2520 bool refresh = flags & (OPEN_REFRESH | OPEN_PREPARED);
2522 if (!reload && !strcmp(view->vid, view->id))
2523 return TRUE;
2525 if (view->pipe) {
2526 if (extra)
2527 io_done(view->pipe);
2528 else
2529 end_update(view, TRUE);
2530 }
2532 if (!refresh) {
2533 view->dir = dir;
2534 if (!format_argv(&view->argv, argv, !view->prev))
2535 return FALSE;
2537 /* Put the current ref_* value to the view title ref
2538 * member. This is needed by the blob view. Most other
2539 * views sets it automatically after loading because the
2540 * first line is a commit line. */
2541 string_copy_rev(view->ref, view->id);
2542 }
2544 if (view->argv && view->argv[0] &&
2545 !io_run(&view->io, IO_RD, view->dir, view->argv))
2546 return FALSE;
2548 if (!extra)
2549 setup_update(view, view->id);
2551 return TRUE;
2552 }
2554 static bool
2555 view_open(struct view *view, enum open_flags flags)
2556 {
2557 return begin_update(view, NULL, NULL, flags);
2558 }
2560 static bool
2561 update_view(struct view *view)
2562 {
2563 char out_buffer[BUFSIZ * 2];
2564 char *line;
2565 /* Clear the view and redraw everything since the tree sorting
2566 * might have rearranged things. */
2567 bool redraw = view->lines == 0;
2568 bool can_read = TRUE;
2570 if (!view->pipe)
2571 return TRUE;
2573 if (!io_can_read(view->pipe, FALSE)) {
2574 if (view->lines == 0 && view_is_displayed(view)) {
2575 time_t secs = time(NULL) - view->start_time;
2577 if (secs > 1 && secs > view->update_secs) {
2578 if (view->update_secs == 0)
2579 redraw_view(view);
2580 update_view_title(view);
2581 view->update_secs = secs;
2582 }
2583 }
2584 return TRUE;
2585 }
2587 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2588 if (opt_iconv_in != ICONV_NONE) {
2589 ICONV_CONST char *inbuf = line;
2590 size_t inlen = strlen(line) + 1;
2592 char *outbuf = out_buffer;
2593 size_t outlen = sizeof(out_buffer);
2595 size_t ret;
2597 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2598 if (ret != (size_t) -1)
2599 line = out_buffer;
2600 }
2602 if (!view->ops->read(view, line)) {
2603 report("Allocation failure");
2604 end_update(view, TRUE);
2605 return FALSE;
2606 }
2607 }
2609 {
2610 unsigned long lines = view->lines;
2611 int digits;
2613 for (digits = 0; lines; digits++)
2614 lines /= 10;
2616 /* Keep the displayed view in sync with line number scaling. */
2617 if (digits != view->digits) {
2618 view->digits = digits;
2619 if (opt_line_number || view->type == VIEW_BLAME)
2620 redraw = TRUE;
2621 }
2622 }
2624 if (io_error(view->pipe)) {
2625 report("Failed to read: %s", io_strerror(view->pipe));
2626 end_update(view, TRUE);
2628 } else if (io_eof(view->pipe)) {
2629 if (view_is_displayed(view))
2630 report("");
2631 end_update(view, FALSE);
2632 }
2634 if (restore_view_position(view))
2635 redraw = TRUE;
2637 if (!view_is_displayed(view))
2638 return TRUE;
2640 if (redraw)
2641 redraw_view_from(view, 0);
2642 else
2643 redraw_view_dirty(view);
2645 /* Update the title _after_ the redraw so that if the redraw picks up a
2646 * commit reference in view->ref it'll be available here. */
2647 update_view_title(view);
2648 return TRUE;
2649 }
2651 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2653 static struct line *
2654 add_line_data(struct view *view, void *data, enum line_type type)
2655 {
2656 struct line *line;
2658 if (!realloc_lines(&view->line, view->lines, 1))
2659 return NULL;
2661 line = &view->line[view->lines++];
2662 memset(line, 0, sizeof(*line));
2663 line->type = type;
2664 line->data = data;
2665 line->dirty = 1;
2667 return line;
2668 }
2670 static struct line *
2671 add_line_text(struct view *view, const char *text, enum line_type type)
2672 {
2673 char *data = text ? strdup(text) : NULL;
2675 return data ? add_line_data(view, data, type) : NULL;
2676 }
2678 static struct line *
2679 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2680 {
2681 char buf[SIZEOF_STR];
2682 va_list args;
2684 va_start(args, fmt);
2685 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2686 buf[0] = 0;
2687 va_end(args);
2689 return buf[0] ? add_line_text(view, buf, type) : NULL;
2690 }
2692 /*
2693 * View opening
2694 */
2696 static void
2697 load_view(struct view *view, enum open_flags flags)
2698 {
2699 if (view->pipe)
2700 end_update(view, TRUE);
2701 if (!view->ops->open(view, flags)) {
2702 report("Failed to load %s view", view->name);
2703 return;
2704 }
2705 restore_view_position(view);
2707 if (view->pipe && view->lines == 0) {
2708 /* Clear the old view and let the incremental updating refill
2709 * the screen. */
2710 werase(view->win);
2711 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2712 report("");
2713 } else if (view_is_displayed(view)) {
2714 redraw_view(view);
2715 report("");
2716 }
2717 }
2719 #define refresh_view(view) load_view(view, OPEN_REFRESH)
2721 static void
2722 split_view(struct view *prev, struct view *view)
2723 {
2724 display[1] = view;
2725 current_view = 1;
2726 view->parent = prev;
2727 resize_display();
2729 if (prev->lineno - prev->offset >= prev->height) {
2730 /* Take the title line into account. */
2731 int lines = prev->lineno - prev->offset - prev->height + 1;
2733 /* Scroll the view that was split if the current line is
2734 * outside the new limited view. */
2735 do_scroll_view(prev, lines);
2736 }
2738 if (view != prev && view_is_displayed(prev)) {
2739 /* "Blur" the previous view. */
2740 update_view_title(prev);
2741 }
2742 }
2744 static void
2745 open_view(struct view *prev, enum request request, enum open_flags flags)
2746 {
2747 bool split = !!(flags & OPEN_SPLIT);
2748 bool reload = !!(flags & (OPEN_RELOAD | OPEN_PREPARED));
2749 struct view *view = VIEW(request);
2750 int nviews = displayed_views();
2752 assert(flags ^ OPEN_REFRESH);
2754 if (view == prev && nviews == 1 && !reload) {
2755 report("Already in %s view", view->name);
2756 return;
2757 }
2759 if (view->git_dir && !opt_git_dir[0]) {
2760 report("The %s view is disabled in pager view", view->name);
2761 return;
2762 }
2764 if (split) {
2765 split_view(prev, view);
2766 } else {
2767 maximize_view(view, FALSE);
2768 }
2770 /* No prev signals that this is the first loaded view. */
2771 if (prev && view != prev) {
2772 view->prev = prev;
2773 }
2775 load_view(view, flags);
2776 }
2778 static void
2779 open_argv(struct view *prev, struct view *view, const char *argv[], const char *dir, enum open_flags flags)
2780 {
2781 enum request request = view - views + REQ_OFFSET + 1;
2783 if (view->pipe)
2784 end_update(view, TRUE);
2785 view->dir = dir;
2787 if (!argv_copy(&view->argv, argv)) {
2788 report("Failed to open %s view: %s", view->name, io_strerror(&view->io));
2789 } else {
2790 open_view(prev, request, flags | OPEN_PREPARED);
2791 }
2792 }
2794 static void
2795 open_file(struct view *prev, struct view *view, const char *file, enum open_flags flags)
2796 {
2797 const char *file_argv[] = { opt_cdup, file , NULL };
2799 open_argv(prev, view, file_argv, opt_cdup, flags);
2800 }
2802 static void
2803 open_external_viewer(const char *argv[], const char *dir)
2804 {
2805 def_prog_mode(); /* save current tty modes */
2806 endwin(); /* restore original tty modes */
2807 io_run_fg(argv, dir);
2808 fprintf(stderr, "Press Enter to continue");
2809 getc(opt_tty);
2810 reset_prog_mode();
2811 redraw_display(TRUE);
2812 }
2814 static void
2815 open_mergetool(const char *file)
2816 {
2817 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2819 open_external_viewer(mergetool_argv, opt_cdup);
2820 }
2822 static void
2823 open_editor(const char *file)
2824 {
2825 const char *editor_argv[] = { "vi", file, NULL };
2826 const char *editor;
2828 editor = getenv("GIT_EDITOR");
2829 if (!editor && *opt_editor)
2830 editor = opt_editor;
2831 if (!editor)
2832 editor = getenv("VISUAL");
2833 if (!editor)
2834 editor = getenv("EDITOR");
2835 if (!editor)
2836 editor = "vi";
2838 editor_argv[0] = editor;
2839 open_external_viewer(editor_argv, opt_cdup);
2840 }
2842 static void
2843 open_run_request(enum request request)
2844 {
2845 struct run_request *req = get_run_request(request);
2846 const char **argv = NULL;
2848 if (!req) {
2849 report("Unknown run request");
2850 return;
2851 }
2853 if (format_argv(&argv, req->argv, FALSE))
2854 open_external_viewer(argv, NULL);
2855 if (argv)
2856 argv_free(argv);
2857 free(argv);
2858 }
2860 /*
2861 * User request switch noodle
2862 */
2864 static int
2865 view_driver(struct view *view, enum request request)
2866 {
2867 int i;
2869 if (request == REQ_NONE)
2870 return TRUE;
2872 if (request > REQ_NONE) {
2873 open_run_request(request);
2874 view_request(view, REQ_REFRESH);
2875 return TRUE;
2876 }
2878 request = view_request(view, request);
2879 if (request == REQ_NONE)
2880 return TRUE;
2882 switch (request) {
2883 case REQ_MOVE_UP:
2884 case REQ_MOVE_DOWN:
2885 case REQ_MOVE_PAGE_UP:
2886 case REQ_MOVE_PAGE_DOWN:
2887 case REQ_MOVE_FIRST_LINE:
2888 case REQ_MOVE_LAST_LINE:
2889 move_view(view, request);
2890 break;
2892 case REQ_SCROLL_FIRST_COL:
2893 case REQ_SCROLL_LEFT:
2894 case REQ_SCROLL_RIGHT:
2895 case REQ_SCROLL_LINE_DOWN:
2896 case REQ_SCROLL_LINE_UP:
2897 case REQ_SCROLL_PAGE_DOWN:
2898 case REQ_SCROLL_PAGE_UP:
2899 scroll_view(view, request);
2900 break;
2902 case REQ_VIEW_BLAME:
2903 if (!opt_file[0]) {
2904 report("No file chosen, press %s to open tree view",
2905 get_key(view->keymap, REQ_VIEW_TREE));
2906 break;
2907 }
2908 open_view(view, request, OPEN_DEFAULT);
2909 break;
2911 case REQ_VIEW_BLOB:
2912 if (!ref_blob[0]) {
2913 report("No file chosen, press %s to open tree view",
2914 get_key(view->keymap, REQ_VIEW_TREE));
2915 break;
2916 }
2917 open_view(view, request, OPEN_DEFAULT);
2918 break;
2920 case REQ_VIEW_PAGER:
2921 if (view == NULL) {
2922 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
2923 die("Failed to open stdin");
2924 open_view(view, request, OPEN_PREPARED);
2925 break;
2926 }
2928 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2929 report("No pager content, press %s to run command from prompt",
2930 get_key(view->keymap, REQ_PROMPT));
2931 break;
2932 }
2933 open_view(view, request, OPEN_DEFAULT);
2934 break;
2936 case REQ_VIEW_STAGE:
2937 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2938 report("No stage content, press %s to open the status view and choose file",
2939 get_key(view->keymap, REQ_VIEW_STATUS));
2940 break;
2941 }
2942 open_view(view, request, OPEN_DEFAULT);
2943 break;
2945 case REQ_VIEW_STATUS:
2946 if (opt_is_inside_work_tree == FALSE) {
2947 report("The status view requires a working tree");
2948 break;
2949 }
2950 open_view(view, request, OPEN_DEFAULT);
2951 break;
2953 case REQ_VIEW_MAIN:
2954 case REQ_VIEW_DIFF:
2955 case REQ_VIEW_LOG:
2956 case REQ_VIEW_TREE:
2957 case REQ_VIEW_HELP:
2958 case REQ_VIEW_BRANCH:
2959 open_view(view, request, OPEN_DEFAULT);
2960 break;
2962 case REQ_NEXT:
2963 case REQ_PREVIOUS:
2964 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2966 if (view->parent) {
2967 int line;
2969 view = view->parent;
2970 line = view->lineno;
2971 move_view(view, request);
2972 if (view_is_displayed(view))
2973 update_view_title(view);
2974 if (line != view->lineno)
2975 view_request(view, REQ_ENTER);
2976 } else {
2977 move_view(view, request);
2978 }
2979 break;
2981 case REQ_VIEW_NEXT:
2982 {
2983 int nviews = displayed_views();
2984 int next_view = (current_view + 1) % nviews;
2986 if (next_view == current_view) {
2987 report("Only one view is displayed");
2988 break;
2989 }
2991 current_view = next_view;
2992 /* Blur out the title of the previous view. */
2993 update_view_title(view);
2994 report("");
2995 break;
2996 }
2997 case REQ_REFRESH:
2998 report("Refreshing is not yet supported for the %s view", view->name);
2999 break;
3001 case REQ_MAXIMIZE:
3002 if (displayed_views() == 2)
3003 maximize_view(view, TRUE);
3004 break;
3006 case REQ_OPTIONS:
3007 case REQ_TOGGLE_LINENO:
3008 case REQ_TOGGLE_DATE:
3009 case REQ_TOGGLE_AUTHOR:
3010 case REQ_TOGGLE_GRAPHIC:
3011 case REQ_TOGGLE_REV_GRAPH:
3012 case REQ_TOGGLE_REFS:
3013 toggle_option(request);
3014 break;
3016 case REQ_TOGGLE_SORT_FIELD:
3017 case REQ_TOGGLE_SORT_ORDER:
3018 report("Sorting is not yet supported for the %s view", view->name);
3019 break;
3021 case REQ_SEARCH:
3022 case REQ_SEARCH_BACK:
3023 search_view(view, request);
3024 break;
3026 case REQ_FIND_NEXT:
3027 case REQ_FIND_PREV:
3028 find_next(view, request);
3029 break;
3031 case REQ_STOP_LOADING:
3032 foreach_view(view, i) {
3033 if (view->pipe)
3034 report("Stopped loading the %s view", view->name),
3035 end_update(view, TRUE);
3036 }
3037 break;
3039 case REQ_SHOW_VERSION:
3040 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3041 return TRUE;
3043 case REQ_SCREEN_REDRAW:
3044 redraw_display(TRUE);
3045 break;
3047 case REQ_EDIT:
3048 report("Nothing to edit");
3049 break;
3051 case REQ_ENTER:
3052 report("Nothing to enter");
3053 break;
3055 case REQ_VIEW_CLOSE:
3056 /* XXX: Mark closed views by letting view->prev point to the
3057 * view itself. Parents to closed view should never be
3058 * followed. */
3059 if (view->prev && view->prev != view) {
3060 maximize_view(view->prev, TRUE);
3061 view->prev = view;
3062 break;
3063 }
3064 /* Fall-through */
3065 case REQ_QUIT:
3066 return FALSE;
3068 default:
3069 report("Unknown key, press %s for help",
3070 get_key(view->keymap, REQ_VIEW_HELP));
3071 return TRUE;
3072 }
3074 return TRUE;
3075 }
3078 /*
3079 * View backend utilities
3080 */
3082 enum sort_field {
3083 ORDERBY_NAME,
3084 ORDERBY_DATE,
3085 ORDERBY_AUTHOR,
3086 };
3088 struct sort_state {
3089 const enum sort_field *fields;
3090 size_t size, current;
3091 bool reverse;
3092 };
3094 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3095 #define get_sort_field(state) ((state).fields[(state).current])
3096 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3098 static void
3099 sort_view(struct view *view, enum request request, struct sort_state *state,
3100 int (*compare)(const void *, const void *))
3101 {
3102 switch (request) {
3103 case REQ_TOGGLE_SORT_FIELD:
3104 state->current = (state->current + 1) % state->size;
3105 break;
3107 case REQ_TOGGLE_SORT_ORDER:
3108 state->reverse = !state->reverse;
3109 break;
3110 default:
3111 die("Not a sort request");
3112 }
3114 qsort(view->line, view->lines, sizeof(*view->line), compare);
3115 redraw_view(view);
3116 }
3118 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3120 /* Small author cache to reduce memory consumption. It uses binary
3121 * search to lookup or find place to position new entries. No entries
3122 * are ever freed. */
3123 static const char *
3124 get_author(const char *name)
3125 {
3126 static const char **authors;
3127 static size_t authors_size;
3128 int from = 0, to = authors_size - 1;
3130 while (from <= to) {
3131 size_t pos = (to + from) / 2;
3132 int cmp = strcmp(name, authors[pos]);
3134 if (!cmp)
3135 return authors[pos];
3137 if (cmp < 0)
3138 to = pos - 1;
3139 else
3140 from = pos + 1;
3141 }
3143 if (!realloc_authors(&authors, authors_size, 1))
3144 return NULL;
3145 name = strdup(name);
3146 if (!name)
3147 return NULL;
3149 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3150 authors[from] = name;
3151 authors_size++;
3153 return name;
3154 }
3156 static void
3157 parse_timesec(struct time *time, const char *sec)
3158 {
3159 time->sec = (time_t) atol(sec);
3160 }
3162 static void
3163 parse_timezone(struct time *time, const char *zone)
3164 {
3165 long tz;
3167 tz = ('0' - zone[1]) * 60 * 60 * 10;
3168 tz += ('0' - zone[2]) * 60 * 60;
3169 tz += ('0' - zone[3]) * 60 * 10;
3170 tz += ('0' - zone[4]) * 60;
3172 if (zone[0] == '-')
3173 tz = -tz;
3175 time->tz = tz;
3176 time->sec -= tz;
3177 }
3179 /* Parse author lines where the name may be empty:
3180 * author <email@address.tld> 1138474660 +0100
3181 */
3182 static void
3183 parse_author_line(char *ident, const char **author, struct time *time)
3184 {
3185 char *nameend = strchr(ident, '<');
3186 char *emailend = strchr(ident, '>');
3188 if (nameend && emailend)
3189 *nameend = *emailend = 0;
3190 ident = chomp_string(ident);
3191 if (!*ident) {
3192 if (nameend)
3193 ident = chomp_string(nameend + 1);
3194 if (!*ident)
3195 ident = "Unknown";
3196 }
3198 *author = get_author(ident);
3200 /* Parse epoch and timezone */
3201 if (emailend && emailend[1] == ' ') {
3202 char *secs = emailend + 2;
3203 char *zone = strchr(secs, ' ');
3205 parse_timesec(time, secs);
3207 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3208 parse_timezone(time, zone + 1);
3209 }
3210 }
3212 /*
3213 * Pager backend
3214 */
3216 static bool
3217 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3218 {
3219 if (opt_line_number && draw_lineno(view, lineno))
3220 return TRUE;
3222 draw_text(view, line->type, line->data);
3223 return TRUE;
3224 }
3226 static bool
3227 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3228 {
3229 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3230 char ref[SIZEOF_STR];
3232 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3233 return TRUE;
3235 /* This is the only fatal call, since it can "corrupt" the buffer. */
3236 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3237 return FALSE;
3239 return TRUE;
3240 }
3242 static void
3243 add_pager_refs(struct view *view, struct line *line)
3244 {
3245 char buf[SIZEOF_STR];
3246 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3247 struct ref_list *list;
3248 size_t bufpos = 0, i;
3249 const char *sep = "Refs: ";
3250 bool is_tag = FALSE;
3252 assert(line->type == LINE_COMMIT);
3254 list = get_ref_list(commit_id);
3255 if (!list) {
3256 if (view->type == VIEW_DIFF)
3257 goto try_add_describe_ref;
3258 return;
3259 }
3261 for (i = 0; i < list->size; i++) {
3262 struct ref *ref = list->refs[i];
3263 const char *fmt = ref->tag ? "%s[%s]" :
3264 ref->remote ? "%s<%s>" : "%s%s";
3266 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3267 return;
3268 sep = ", ";
3269 if (ref->tag)
3270 is_tag = TRUE;
3271 }
3273 if (!is_tag && view->type == VIEW_DIFF) {
3274 try_add_describe_ref:
3275 /* Add <tag>-g<commit_id> "fake" reference. */
3276 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3277 return;
3278 }
3280 if (bufpos == 0)
3281 return;
3283 add_line_text(view, buf, LINE_PP_REFS);
3284 }
3286 static bool
3287 pager_read(struct view *view, char *data)
3288 {
3289 struct line *line;
3291 if (!data)
3292 return TRUE;
3294 line = add_line_text(view, data, get_line_type(data));
3295 if (!line)
3296 return FALSE;
3298 if (line->type == LINE_COMMIT &&
3299 (view->type == VIEW_DIFF ||
3300 view->type == VIEW_LOG))
3301 add_pager_refs(view, line);
3303 return TRUE;
3304 }
3306 static enum request
3307 pager_request(struct view *view, enum request request, struct line *line)
3308 {
3309 int split = 0;
3311 if (request != REQ_ENTER)
3312 return request;
3314 if (line->type == LINE_COMMIT &&
3315 (view->type == VIEW_LOG ||
3316 view->type == VIEW_PAGER)) {
3317 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3318 split = 1;
3319 }
3321 /* Always scroll the view even if it was split. That way
3322 * you can use Enter to scroll through the log view and
3323 * split open each commit diff. */
3324 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3326 /* FIXME: A minor workaround. Scrolling the view will call report("")
3327 * but if we are scrolling a non-current view this won't properly
3328 * update the view title. */
3329 if (split)
3330 update_view_title(view);
3332 return REQ_NONE;
3333 }
3335 static bool
3336 pager_grep(struct view *view, struct line *line)
3337 {
3338 const char *text[] = { line->data, NULL };
3340 return grep_text(view, text);
3341 }
3343 static void
3344 pager_select(struct view *view, struct line *line)
3345 {
3346 if (line->type == LINE_COMMIT) {
3347 char *text = (char *)line->data + STRING_SIZE("commit ");
3349 if (view->type != VIEW_PAGER)
3350 string_copy_rev(view->ref, text);
3351 string_copy_rev(ref_commit, text);
3352 }
3353 }
3355 static struct view_ops pager_ops = {
3356 "line",
3357 view_open,
3358 pager_read,
3359 pager_draw,
3360 pager_request,
3361 pager_grep,
3362 pager_select,
3363 };
3365 static bool
3366 log_open(struct view *view, enum open_flags flags)
3367 {
3368 static const char *log_argv[] = {
3369 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3370 };
3372 return begin_update(view, NULL, log_argv, flags);
3373 }
3375 static enum request
3376 log_request(struct view *view, enum request request, struct line *line)
3377 {
3378 switch (request) {
3379 case REQ_REFRESH:
3380 load_refs();
3381 refresh_view(view);
3382 return REQ_NONE;
3383 default:
3384 return pager_request(view, request, line);
3385 }
3386 }
3388 static struct view_ops log_ops = {
3389 "line",
3390 log_open,
3391 pager_read,
3392 pager_draw,
3393 log_request,
3394 pager_grep,
3395 pager_select,
3396 };
3398 static bool
3399 diff_open(struct view *view, enum open_flags flags)
3400 {
3401 static const char *diff_argv[] = {
3402 "git", "show", "--pretty=fuller", "--no-color", "--root",
3403 "--patch-with-stat", "--find-copies-harder", "-C",
3404 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3405 };
3407 return begin_update(view, NULL, diff_argv, flags);
3408 }
3410 static bool
3411 diff_read(struct view *view, char *data)
3412 {
3413 if (!data) {
3414 /* Fall back to retry if no diff will be shown. */
3415 if (view->lines == 0 && opt_file_argv) {
3416 int pos = argv_size(view->argv)
3417 - argv_size(opt_file_argv) - 1;
3419 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3420 for (; view->argv[pos]; pos++) {
3421 free((void *) view->argv[pos]);
3422 view->argv[pos] = NULL;
3423 }
3425 if (view->pipe)
3426 io_done(view->pipe);
3427 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3428 return FALSE;
3429 }
3430 }
3431 return TRUE;
3432 }
3434 return pager_read(view, data);
3435 }
3437 static struct view_ops diff_ops = {
3438 "line",
3439 diff_open,
3440 diff_read,
3441 pager_draw,
3442 pager_request,
3443 pager_grep,
3444 pager_select,
3445 };
3447 /*
3448 * Help backend
3449 */
3451 static bool help_keymap_hidden[ARRAY_SIZE(keymap_map)];
3453 static bool
3454 help_open_keymap_title(struct view *view, enum keymap keymap)
3455 {
3456 struct line *line;
3458 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3459 help_keymap_hidden[keymap] ? '+' : '-',
3460 enum_name(keymap_map[keymap]));
3461 if (line)
3462 line->other = keymap;
3464 return help_keymap_hidden[keymap];
3465 }
3467 static void
3468 help_open_keymap(struct view *view, enum keymap keymap)
3469 {
3470 const char *group = NULL;
3471 char buf[SIZEOF_STR];
3472 size_t bufpos;
3473 bool add_title = TRUE;
3474 int i;
3476 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3477 const char *key = NULL;
3479 if (req_info[i].request == REQ_NONE)
3480 continue;
3482 if (!req_info[i].request) {
3483 group = req_info[i].help;
3484 continue;
3485 }
3487 key = get_keys(keymap, req_info[i].request, TRUE);
3488 if (!key || !*key)
3489 continue;
3491 if (add_title && help_open_keymap_title(view, keymap))
3492 return;
3493 add_title = FALSE;
3495 if (group) {
3496 add_line_text(view, group, LINE_HELP_GROUP);
3497 group = NULL;
3498 }
3500 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3501 enum_name(req_info[i]), req_info[i].help);
3502 }
3504 group = "External commands:";
3506 for (i = 0; i < run_requests; i++) {
3507 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3508 const char *key;
3509 int argc;
3511 if (!req || req->keymap != keymap)
3512 continue;
3514 key = get_key_name(req->key);
3515 if (!*key)
3516 key = "(no key defined)";
3518 if (add_title && help_open_keymap_title(view, keymap))
3519 return;
3520 if (group) {
3521 add_line_text(view, group, LINE_HELP_GROUP);
3522 group = NULL;
3523 }
3525 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3526 if (!string_format_from(buf, &bufpos, "%s%s",
3527 argc ? " " : "", req->argv[argc]))
3528 return;
3530 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3531 }
3532 }
3534 static bool
3535 help_open(struct view *view, enum open_flags flags)
3536 {
3537 enum keymap keymap;
3539 reset_view(view);
3540 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3541 add_line_text(view, "", LINE_DEFAULT);
3543 for (keymap = 0; keymap < ARRAY_SIZE(keymap_map); keymap++)
3544 help_open_keymap(view, keymap);
3546 return TRUE;
3547 }
3549 static enum request
3550 help_request(struct view *view, enum request request, struct line *line)
3551 {
3552 switch (request) {
3553 case REQ_ENTER:
3554 if (line->type == LINE_HELP_KEYMAP) {
3555 help_keymap_hidden[line->other] =
3556 !help_keymap_hidden[line->other];
3557 refresh_view(view);
3558 }
3560 return REQ_NONE;
3561 default:
3562 return pager_request(view, request, line);
3563 }
3564 }
3566 static struct view_ops help_ops = {
3567 "line",
3568 help_open,
3569 NULL,
3570 pager_draw,
3571 help_request,
3572 pager_grep,
3573 pager_select,
3574 };
3577 /*
3578 * Tree backend
3579 */
3581 struct tree_stack_entry {
3582 struct tree_stack_entry *prev; /* Entry below this in the stack */
3583 unsigned long lineno; /* Line number to restore */
3584 char *name; /* Position of name in opt_path */
3585 };
3587 /* The top of the path stack. */
3588 static struct tree_stack_entry *tree_stack = NULL;
3589 unsigned long tree_lineno = 0;
3591 static void
3592 pop_tree_stack_entry(void)
3593 {
3594 struct tree_stack_entry *entry = tree_stack;
3596 tree_lineno = entry->lineno;
3597 entry->name[0] = 0;
3598 tree_stack = entry->prev;
3599 free(entry);
3600 }
3602 static void
3603 push_tree_stack_entry(const char *name, unsigned long lineno)
3604 {
3605 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3606 size_t pathlen = strlen(opt_path);
3608 if (!entry)
3609 return;
3611 entry->prev = tree_stack;
3612 entry->name = opt_path + pathlen;
3613 tree_stack = entry;
3615 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3616 pop_tree_stack_entry();
3617 return;
3618 }
3620 /* Move the current line to the first tree entry. */
3621 tree_lineno = 1;
3622 entry->lineno = lineno;
3623 }
3625 /* Parse output from git-ls-tree(1):
3626 *
3627 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3628 */
3630 #define SIZEOF_TREE_ATTR \
3631 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3633 #define SIZEOF_TREE_MODE \
3634 STRING_SIZE("100644 ")
3636 #define TREE_ID_OFFSET \
3637 STRING_SIZE("100644 blob ")
3639 struct tree_entry {
3640 char id[SIZEOF_REV];
3641 mode_t mode;
3642 struct time time; /* Date from the author ident. */
3643 const char *author; /* Author of the commit. */
3644 char name[1];
3645 };
3647 static const char *
3648 tree_path(const struct line *line)
3649 {
3650 return ((struct tree_entry *) line->data)->name;
3651 }
3653 static int
3654 tree_compare_entry(const struct line *line1, const struct line *line2)
3655 {
3656 if (line1->type != line2->type)
3657 return line1->type == LINE_TREE_DIR ? -1 : 1;
3658 return strcmp(tree_path(line1), tree_path(line2));
3659 }
3661 static const enum sort_field tree_sort_fields[] = {
3662 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
3663 };
3664 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
3666 static int
3667 tree_compare(const void *l1, const void *l2)
3668 {
3669 const struct line *line1 = (const struct line *) l1;
3670 const struct line *line2 = (const struct line *) l2;
3671 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
3672 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
3674 if (line1->type == LINE_TREE_HEAD)
3675 return -1;
3676 if (line2->type == LINE_TREE_HEAD)
3677 return 1;
3679 switch (get_sort_field(tree_sort_state)) {
3680 case ORDERBY_DATE:
3681 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
3683 case ORDERBY_AUTHOR:
3684 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
3686 case ORDERBY_NAME:
3687 default:
3688 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
3689 }
3690 }
3693 static struct line *
3694 tree_entry(struct view *view, enum line_type type, const char *path,
3695 const char *mode, const char *id)
3696 {
3697 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3698 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3700 if (!entry || !line) {
3701 free(entry);
3702 return NULL;
3703 }
3705 strncpy(entry->name, path, strlen(path));
3706 if (mode)
3707 entry->mode = strtoul(mode, NULL, 8);
3708 if (id)
3709 string_copy_rev(entry->id, id);
3711 return line;
3712 }
3714 static bool
3715 tree_read_date(struct view *view, char *text, bool *read_date)
3716 {
3717 static const char *author_name;
3718 static struct time author_time;
3720 if (!text && *read_date) {
3721 *read_date = FALSE;
3722 return TRUE;
3724 } else if (!text) {
3725 /* Find next entry to process */
3726 const char *log_file[] = {
3727 "git", "log", "--no-color", "--pretty=raw",
3728 "--cc", "--raw", view->id, "--", "%(directory)", NULL
3729 };
3731 if (!view->lines) {
3732 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3733 report("Tree is empty");
3734 return TRUE;
3735 }
3737 if (!begin_update(view, opt_cdup, log_file, OPEN_EXTRA)) {
3738 report("Failed to load tree data");
3739 return TRUE;
3740 }
3742 *read_date = TRUE;
3743 return FALSE;
3745 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3746 parse_author_line(text + STRING_SIZE("author "),
3747 &author_name, &author_time);
3749 } else if (*text == ':') {
3750 char *pos;
3751 size_t annotated = 1;
3752 size_t i;
3754 pos = strchr(text, '\t');
3755 if (!pos)
3756 return TRUE;
3757 text = pos + 1;
3758 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3759 text += strlen(opt_path);
3760 pos = strchr(text, '/');
3761 if (pos)
3762 *pos = 0;
3764 for (i = 1; i < view->lines; i++) {
3765 struct line *line = &view->line[i];
3766 struct tree_entry *entry = line->data;
3768 annotated += !!entry->author;
3769 if (entry->author || strcmp(entry->name, text))
3770 continue;
3772 entry->author = author_name;
3773 entry->time = author_time;
3774 line->dirty = 1;
3775 break;
3776 }
3778 if (annotated == view->lines)
3779 io_kill(view->pipe);
3780 }
3781 return TRUE;
3782 }
3784 static bool
3785 tree_read(struct view *view, char *text)
3786 {
3787 static bool read_date = FALSE;
3788 struct tree_entry *data;
3789 struct line *entry, *line;
3790 enum line_type type;
3791 size_t textlen = text ? strlen(text) : 0;
3792 char *path = text + SIZEOF_TREE_ATTR;
3794 if (read_date || !text)
3795 return tree_read_date(view, text, &read_date);
3797 if (textlen <= SIZEOF_TREE_ATTR)
3798 return FALSE;
3799 if (view->lines == 0 &&
3800 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3801 return FALSE;
3803 /* Strip the path part ... */
3804 if (*opt_path) {
3805 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3806 size_t striplen = strlen(opt_path);
3808 if (pathlen > striplen)
3809 memmove(path, path + striplen,
3810 pathlen - striplen + 1);
3812 /* Insert "link" to parent directory. */
3813 if (view->lines == 1 &&
3814 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3815 return FALSE;
3816 }
3818 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3819 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3820 if (!entry)
3821 return FALSE;
3822 data = entry->data;
3824 /* Skip "Directory ..." and ".." line. */
3825 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3826 if (tree_compare_entry(line, entry) <= 0)
3827 continue;
3829 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3831 line->data = data;
3832 line->type = type;
3833 for (; line <= entry; line++)
3834 line->dirty = line->cleareol = 1;
3835 return TRUE;
3836 }
3838 if (tree_lineno > view->lineno) {
3839 view->lineno = tree_lineno;
3840 tree_lineno = 0;
3841 }
3843 return TRUE;
3844 }
3846 static bool
3847 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3848 {
3849 struct tree_entry *entry = line->data;
3851 if (line->type == LINE_TREE_HEAD) {
3852 if (draw_text(view, line->type, "Directory path /"))
3853 return TRUE;
3854 } else {
3855 if (draw_mode(view, entry->mode))
3856 return TRUE;
3858 if (draw_author(view, entry->author))
3859 return TRUE;
3861 if (draw_date(view, &entry->time))
3862 return TRUE;
3863 }
3865 draw_text(view, line->type, entry->name);
3866 return TRUE;
3867 }
3869 static void
3870 open_blob_editor(const char *id)
3871 {
3872 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
3873 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3874 int fd = mkstemp(file);
3876 if (fd == -1)
3877 report("Failed to create temporary file");
3878 else if (!io_run_append(blob_argv, fd))
3879 report("Failed to save blob data to file");
3880 else
3881 open_editor(file);
3882 if (fd != -1)
3883 unlink(file);
3884 }
3886 static enum request
3887 tree_request(struct view *view, enum request request, struct line *line)
3888 {
3889 enum open_flags flags;
3890 struct tree_entry *entry = line->data;
3892 switch (request) {
3893 case REQ_VIEW_BLAME:
3894 if (line->type != LINE_TREE_FILE) {
3895 report("Blame only supported for files");
3896 return REQ_NONE;
3897 }
3899 string_copy(opt_ref, view->vid);
3900 return request;
3902 case REQ_EDIT:
3903 if (line->type != LINE_TREE_FILE) {
3904 report("Edit only supported for files");
3905 } else if (!is_head_commit(view->vid)) {
3906 open_blob_editor(entry->id);
3907 } else {
3908 open_editor(opt_file);
3909 }
3910 return REQ_NONE;
3912 case REQ_TOGGLE_SORT_FIELD:
3913 case REQ_TOGGLE_SORT_ORDER:
3914 sort_view(view, request, &tree_sort_state, tree_compare);
3915 return REQ_NONE;
3917 case REQ_PARENT:
3918 if (!*opt_path) {
3919 /* quit view if at top of tree */
3920 return REQ_VIEW_CLOSE;
3921 }
3922 /* fake 'cd ..' */
3923 line = &view->line[1];
3924 break;
3926 case REQ_ENTER:
3927 break;
3929 default:
3930 return request;
3931 }
3933 /* Cleanup the stack if the tree view is at a different tree. */
3934 while (!*opt_path && tree_stack)
3935 pop_tree_stack_entry();
3937 switch (line->type) {
3938 case LINE_TREE_DIR:
3939 /* Depending on whether it is a subdirectory or parent link
3940 * mangle the path buffer. */
3941 if (line == &view->line[1] && *opt_path) {
3942 pop_tree_stack_entry();
3944 } else {
3945 const char *basename = tree_path(line);
3947 push_tree_stack_entry(basename, view->lineno);
3948 }
3950 /* Trees and subtrees share the same ID, so they are not not
3951 * unique like blobs. */
3952 flags = OPEN_RELOAD;
3953 request = REQ_VIEW_TREE;
3954 break;
3956 case LINE_TREE_FILE:
3957 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
3958 request = REQ_VIEW_BLOB;
3959 break;
3961 default:
3962 return REQ_NONE;
3963 }
3965 open_view(view, request, flags);
3966 if (request == REQ_VIEW_TREE)
3967 view->lineno = tree_lineno;
3969 return REQ_NONE;
3970 }
3972 static bool
3973 tree_grep(struct view *view, struct line *line)
3974 {
3975 struct tree_entry *entry = line->data;
3976 const char *text[] = {
3977 entry->name,
3978 opt_author ? entry->author : "",
3979 mkdate(&entry->time, opt_date),
3980 NULL
3981 };
3983 return grep_text(view, text);
3984 }
3986 static void
3987 tree_select(struct view *view, struct line *line)
3988 {
3989 struct tree_entry *entry = line->data;
3991 if (line->type == LINE_TREE_FILE) {
3992 string_copy_rev(ref_blob, entry->id);
3993 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3995 } else if (line->type != LINE_TREE_DIR) {
3996 return;
3997 }
3999 string_copy_rev(view->ref, entry->id);
4000 }
4002 static bool
4003 tree_open(struct view *view, enum open_flags flags)
4004 {
4005 static const char *tree_argv[] = {
4006 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4007 };
4009 if (view->lines == 0 && opt_prefix[0]) {
4010 char *pos = opt_prefix;
4012 while (pos && *pos) {
4013 char *end = strchr(pos, '/');
4015 if (end)
4016 *end = 0;
4017 push_tree_stack_entry(pos, 0);
4018 pos = end;
4019 if (end) {
4020 *end = '/';
4021 pos++;
4022 }
4023 }
4025 } else if (strcmp(view->vid, view->id)) {
4026 opt_path[0] = 0;
4027 }
4029 return begin_update(view, opt_cdup, tree_argv, flags);
4030 }
4032 static struct view_ops tree_ops = {
4033 "file",
4034 tree_open,
4035 tree_read,
4036 tree_draw,
4037 tree_request,
4038 tree_grep,
4039 tree_select,
4040 };
4042 static bool
4043 blob_open(struct view *view, enum open_flags flags)
4044 {
4045 static const char *blob_argv[] = {
4046 "git", "cat-file", "blob", "%(blob)", NULL
4047 };
4049 return begin_update(view, NULL, blob_argv, flags);
4050 }
4052 static bool
4053 blob_read(struct view *view, char *line)
4054 {
4055 if (!line)
4056 return TRUE;
4057 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4058 }
4060 static enum request
4061 blob_request(struct view *view, enum request request, struct line *line)
4062 {
4063 switch (request) {
4064 case REQ_EDIT:
4065 open_blob_editor(view->vid);
4066 return REQ_NONE;
4067 default:
4068 return pager_request(view, request, line);
4069 }
4070 }
4072 static struct view_ops blob_ops = {
4073 "line",
4074 blob_open,
4075 blob_read,
4076 pager_draw,
4077 blob_request,
4078 pager_grep,
4079 pager_select,
4080 };
4082 /*
4083 * Blame backend
4084 *
4085 * Loading the blame view is a two phase job:
4086 *
4087 * 1. File content is read either using opt_file from the
4088 * filesystem or using git-cat-file.
4089 * 2. Then blame information is incrementally added by
4090 * reading output from git-blame.
4091 */
4093 struct blame_commit {
4094 char id[SIZEOF_REV]; /* SHA1 ID. */
4095 char title[128]; /* First line of the commit message. */
4096 const char *author; /* Author of the commit. */
4097 struct time time; /* Date from the author ident. */
4098 char filename[128]; /* Name of file. */
4099 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4100 char parent_filename[128]; /* Parent/previous name of file. */
4101 };
4103 struct blame {
4104 struct blame_commit *commit;
4105 unsigned long lineno;
4106 char text[1];
4107 };
4109 static bool
4110 blame_open(struct view *view, enum open_flags flags)
4111 {
4112 const char *file_argv[] = { opt_cdup, opt_file , NULL };
4113 char path[SIZEOF_STR];
4114 size_t i;
4116 if (!view->prev && *opt_prefix) {
4117 string_copy(path, opt_file);
4118 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4119 return FALSE;
4120 }
4122 if (*opt_ref || !begin_update(view, opt_cdup, file_argv, flags)) {
4123 const char *blame_cat_file_argv[] = {
4124 "git", "cat-file", "blob", path, NULL
4125 };
4127 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4128 !begin_update(view, opt_cdup, blame_cat_file_argv, flags))
4129 return FALSE;
4130 }
4132 /* First pass: remove multiple references to the same commit. */
4133 for (i = 0; i < view->lines; i++) {
4134 struct blame *blame = view->line[i].data;
4136 if (blame->commit && blame->commit->id[0])
4137 blame->commit->id[0] = 0;
4138 else
4139 blame->commit = NULL;
4140 }
4142 /* Second pass: free existing references. */
4143 for (i = 0; i < view->lines; i++) {
4144 struct blame *blame = view->line[i].data;
4146 if (blame->commit)
4147 free(blame->commit);
4148 }
4150 string_format(view->vid, "%s:%s", opt_ref, opt_file);
4151 string_format(view->ref, "%s ...", opt_file);
4153 return TRUE;
4154 }
4156 static struct blame_commit *
4157 get_blame_commit(struct view *view, const char *id)
4158 {
4159 size_t i;
4161 for (i = 0; i < view->lines; i++) {
4162 struct blame *blame = view->line[i].data;
4164 if (!blame->commit)
4165 continue;
4167 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4168 return blame->commit;
4169 }
4171 {
4172 struct blame_commit *commit = calloc(1, sizeof(*commit));
4174 if (commit)
4175 string_ncopy(commit->id, id, SIZEOF_REV);
4176 return commit;
4177 }
4178 }
4180 static bool
4181 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4182 {
4183 const char *pos = *posref;
4185 *posref = NULL;
4186 pos = strchr(pos + 1, ' ');
4187 if (!pos || !isdigit(pos[1]))
4188 return FALSE;
4189 *number = atoi(pos + 1);
4190 if (*number < min || *number > max)
4191 return FALSE;
4193 *posref = pos;
4194 return TRUE;
4195 }
4197 static struct blame_commit *
4198 parse_blame_commit(struct view *view, const char *text, int *blamed)
4199 {
4200 struct blame_commit *commit;
4201 struct blame *blame;
4202 const char *pos = text + SIZEOF_REV - 2;
4203 size_t orig_lineno = 0;
4204 size_t lineno;
4205 size_t group;
4207 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4208 return NULL;
4210 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4211 !parse_number(&pos, &lineno, 1, view->lines) ||
4212 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4213 return NULL;
4215 commit = get_blame_commit(view, text);
4216 if (!commit)
4217 return NULL;
4219 *blamed += group;
4220 while (group--) {
4221 struct line *line = &view->line[lineno + group - 1];
4223 blame = line->data;
4224 blame->commit = commit;
4225 blame->lineno = orig_lineno + group - 1;
4226 line->dirty = 1;
4227 }
4229 return commit;
4230 }
4232 static bool
4233 blame_read_file(struct view *view, const char *line, bool *read_file)
4234 {
4235 if (!line) {
4236 const char *blame_argv[] = {
4237 "git", "blame", "%(blameargs)", "--incremental",
4238 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4239 };
4241 if (view->lines == 0 && !view->prev)
4242 die("No blame exist for %s", view->vid);
4244 if (view->lines == 0 || !begin_update(view, opt_cdup, blame_argv, OPEN_EXTRA)) {
4245 report("Failed to load blame data");
4246 return TRUE;
4247 }
4249 *read_file = FALSE;
4250 return FALSE;
4252 } else {
4253 size_t linelen = strlen(line);
4254 struct blame *blame = malloc(sizeof(*blame) + linelen);
4256 if (!blame)
4257 return FALSE;
4259 blame->commit = NULL;
4260 strncpy(blame->text, line, linelen);
4261 blame->text[linelen] = 0;
4262 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4263 }
4264 }
4266 static bool
4267 match_blame_header(const char *name, char **line)
4268 {
4269 size_t namelen = strlen(name);
4270 bool matched = !strncmp(name, *line, namelen);
4272 if (matched)
4273 *line += namelen;
4275 return matched;
4276 }
4278 static bool
4279 blame_read(struct view *view, char *line)
4280 {
4281 static struct blame_commit *commit = NULL;
4282 static int blamed = 0;
4283 static bool read_file = TRUE;
4285 if (read_file)
4286 return blame_read_file(view, line, &read_file);
4288 if (!line) {
4289 /* Reset all! */
4290 commit = NULL;
4291 blamed = 0;
4292 read_file = TRUE;
4293 string_format(view->ref, "%s", view->vid);
4294 if (view_is_displayed(view)) {
4295 update_view_title(view);
4296 redraw_view_from(view, 0);
4297 }
4298 return TRUE;
4299 }
4301 if (!commit) {
4302 commit = parse_blame_commit(view, line, &blamed);
4303 string_format(view->ref, "%s %2d%%", view->vid,
4304 view->lines ? blamed * 100 / view->lines : 0);
4306 } else if (match_blame_header("author ", &line)) {
4307 commit->author = get_author(line);
4309 } else if (match_blame_header("author-time ", &line)) {
4310 parse_timesec(&commit->time, line);
4312 } else if (match_blame_header("author-tz ", &line)) {
4313 parse_timezone(&commit->time, line);
4315 } else if (match_blame_header("summary ", &line)) {
4316 string_ncopy(commit->title, line, strlen(line));
4318 } else if (match_blame_header("previous ", &line)) {
4319 if (strlen(line) <= SIZEOF_REV)
4320 return FALSE;
4321 string_copy_rev(commit->parent_id, line);
4322 line += SIZEOF_REV;
4323 string_ncopy(commit->parent_filename, line, strlen(line));
4325 } else if (match_blame_header("filename ", &line)) {
4326 string_ncopy(commit->filename, line, strlen(line));
4327 commit = NULL;
4328 }
4330 return TRUE;
4331 }
4333 static bool
4334 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4335 {
4336 struct blame *blame = line->data;
4337 struct time *time = NULL;
4338 const char *id = NULL, *author = NULL;
4340 if (blame->commit && *blame->commit->filename) {
4341 id = blame->commit->id;
4342 author = blame->commit->author;
4343 time = &blame->commit->time;
4344 }
4346 if (draw_date(view, time))
4347 return TRUE;
4349 if (draw_author(view, author))
4350 return TRUE;
4352 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4353 return TRUE;
4355 if (draw_lineno(view, lineno))
4356 return TRUE;
4358 draw_text(view, LINE_DEFAULT, blame->text);
4359 return TRUE;
4360 }
4362 static bool
4363 check_blame_commit(struct blame *blame, bool check_null_id)
4364 {
4365 if (!blame->commit)
4366 report("Commit data not loaded yet");
4367 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4368 report("No commit exist for the selected line");
4369 else
4370 return TRUE;
4371 return FALSE;
4372 }
4374 static void
4375 setup_blame_parent_line(struct view *view, struct blame *blame)
4376 {
4377 char from[SIZEOF_REF + SIZEOF_STR];
4378 char to[SIZEOF_REF + SIZEOF_STR];
4379 const char *diff_tree_argv[] = {
4380 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4381 "-U0", from, to, "--", NULL
4382 };
4383 struct io io;
4384 int parent_lineno = -1;
4385 int blamed_lineno = -1;
4386 char *line;
4388 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4389 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4390 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4391 return;
4393 while ((line = io_get(&io, '\n', TRUE))) {
4394 if (*line == '@') {
4395 char *pos = strchr(line, '+');
4397 parent_lineno = atoi(line + 4);
4398 if (pos)
4399 blamed_lineno = atoi(pos + 1);
4401 } else if (*line == '+' && parent_lineno != -1) {
4402 if (blame->lineno == blamed_lineno - 1 &&
4403 !strcmp(blame->text, line + 1)) {
4404 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4405 break;
4406 }
4407 blamed_lineno++;
4408 }
4409 }
4411 io_done(&io);
4412 }
4414 static enum request
4415 blame_request(struct view *view, enum request request, struct line *line)
4416 {
4417 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4418 struct blame *blame = line->data;
4420 switch (request) {
4421 case REQ_VIEW_BLAME:
4422 if (check_blame_commit(blame, TRUE)) {
4423 string_copy(opt_ref, blame->commit->id);
4424 string_copy(opt_file, blame->commit->filename);
4425 if (blame->lineno)
4426 view->lineno = blame->lineno;
4427 refresh_view(view);
4428 }
4429 break;
4431 case REQ_PARENT:
4432 if (!check_blame_commit(blame, TRUE))
4433 break;
4434 if (!*blame->commit->parent_id) {
4435 report("The selected commit has no parents");
4436 } else {
4437 string_copy_rev(opt_ref, blame->commit->parent_id);
4438 string_copy(opt_file, blame->commit->parent_filename);
4439 setup_blame_parent_line(view, blame);
4440 refresh_view(view);
4441 }
4442 break;
4444 case REQ_ENTER:
4445 if (!check_blame_commit(blame, FALSE))
4446 break;
4448 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4449 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4450 break;
4452 if (!strcmp(blame->commit->id, NULL_ID)) {
4453 struct view *diff = VIEW(REQ_VIEW_DIFF);
4454 const char *diff_index_argv[] = {
4455 "git", "diff-index", "--root", "--patch-with-stat",
4456 "-C", "-M", "HEAD", "--", view->vid, NULL
4457 };
4459 if (!*blame->commit->parent_id) {
4460 diff_index_argv[1] = "diff";
4461 diff_index_argv[2] = "--no-color";
4462 diff_index_argv[6] = "--";
4463 diff_index_argv[7] = "/dev/null";
4464 }
4466 open_argv(view, diff, diff_index_argv, NULL, flags);
4467 } else {
4468 open_view(view, REQ_VIEW_DIFF, flags);
4469 }
4470 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4471 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4472 break;
4474 default:
4475 return request;
4476 }
4478 return REQ_NONE;
4479 }
4481 static bool
4482 blame_grep(struct view *view, struct line *line)
4483 {
4484 struct blame *blame = line->data;
4485 struct blame_commit *commit = blame->commit;
4486 const char *text[] = {
4487 blame->text,
4488 commit ? commit->title : "",
4489 commit ? commit->id : "",
4490 commit && opt_author ? commit->author : "",
4491 commit ? mkdate(&commit->time, opt_date) : "",
4492 NULL
4493 };
4495 return grep_text(view, text);
4496 }
4498 static void
4499 blame_select(struct view *view, struct line *line)
4500 {
4501 struct blame *blame = line->data;
4502 struct blame_commit *commit = blame->commit;
4504 if (!commit)
4505 return;
4507 if (!strcmp(commit->id, NULL_ID))
4508 string_ncopy(ref_commit, "HEAD", 4);
4509 else
4510 string_copy_rev(ref_commit, commit->id);
4511 }
4513 static struct view_ops blame_ops = {
4514 "line",
4515 blame_open,
4516 blame_read,
4517 blame_draw,
4518 blame_request,
4519 blame_grep,
4520 blame_select,
4521 };
4523 /*
4524 * Branch backend
4525 */
4527 struct branch {
4528 const char *author; /* Author of the last commit. */
4529 struct time time; /* Date of the last activity. */
4530 const struct ref *ref; /* Name and commit ID information. */
4531 };
4533 static const struct ref branch_all;
4535 static const enum sort_field branch_sort_fields[] = {
4536 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4537 };
4538 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4540 static int
4541 branch_compare(const void *l1, const void *l2)
4542 {
4543 const struct branch *branch1 = ((const struct line *) l1)->data;
4544 const struct branch *branch2 = ((const struct line *) l2)->data;
4546 switch (get_sort_field(branch_sort_state)) {
4547 case ORDERBY_DATE:
4548 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4550 case ORDERBY_AUTHOR:
4551 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4553 case ORDERBY_NAME:
4554 default:
4555 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4556 }
4557 }
4559 static bool
4560 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4561 {
4562 struct branch *branch = line->data;
4563 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4565 if (draw_date(view, &branch->time))
4566 return TRUE;
4568 if (draw_author(view, branch->author))
4569 return TRUE;
4571 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4572 return TRUE;
4573 }
4575 static enum request
4576 branch_request(struct view *view, enum request request, struct line *line)
4577 {
4578 struct branch *branch = line->data;
4580 switch (request) {
4581 case REQ_REFRESH:
4582 load_refs();
4583 refresh_view(view);
4584 return REQ_NONE;
4586 case REQ_TOGGLE_SORT_FIELD:
4587 case REQ_TOGGLE_SORT_ORDER:
4588 sort_view(view, request, &branch_sort_state, branch_compare);
4589 return REQ_NONE;
4591 case REQ_ENTER:
4592 {
4593 const struct ref *ref = branch->ref;
4594 const char *all_branches_argv[] = {
4595 "git", "log", "--no-color", "--pretty=raw", "--parents",
4596 "--topo-order",
4597 ref == &branch_all ? "--all" : ref->name, NULL
4598 };
4599 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4601 open_argv(view, main_view, all_branches_argv, NULL, OPEN_SPLIT);
4602 return REQ_NONE;
4603 }
4604 default:
4605 return request;
4606 }
4607 }
4609 static bool
4610 branch_read(struct view *view, char *line)
4611 {
4612 static char id[SIZEOF_REV];
4613 struct branch *reference;
4614 size_t i;
4616 if (!line)
4617 return TRUE;
4619 switch (get_line_type(line)) {
4620 case LINE_COMMIT:
4621 string_copy_rev(id, line + STRING_SIZE("commit "));
4622 return TRUE;
4624 case LINE_AUTHOR:
4625 for (i = 0, reference = NULL; i < view->lines; i++) {
4626 struct branch *branch = view->line[i].data;
4628 if (strcmp(branch->ref->id, id))
4629 continue;
4631 view->line[i].dirty = TRUE;
4632 if (reference) {
4633 branch->author = reference->author;
4634 branch->time = reference->time;
4635 continue;
4636 }
4638 parse_author_line(line + STRING_SIZE("author "),
4639 &branch->author, &branch->time);
4640 reference = branch;
4641 }
4642 return TRUE;
4644 default:
4645 return TRUE;
4646 }
4648 }
4650 static bool
4651 branch_open_visitor(void *data, const struct ref *ref)
4652 {
4653 struct view *view = data;
4654 struct branch *branch;
4656 if (ref->tag || ref->ltag || ref->remote)
4657 return TRUE;
4659 branch = calloc(1, sizeof(*branch));
4660 if (!branch)
4661 return FALSE;
4663 branch->ref = ref;
4664 return !!add_line_data(view, branch, LINE_DEFAULT);
4665 }
4667 static bool
4668 branch_open(struct view *view, enum open_flags flags)
4669 {
4670 const char *branch_log[] = {
4671 "git", "log", "--no-color", "--pretty=raw",
4672 "--simplify-by-decoration", "--all", NULL
4673 };
4675 if (!begin_update(view, NULL, branch_log, flags)) {
4676 report("Failed to load branch data");
4677 return TRUE;
4678 }
4680 branch_open_visitor(view, &branch_all);
4681 foreach_ref(branch_open_visitor, view);
4682 view->p_restore = TRUE;
4684 return TRUE;
4685 }
4687 static bool
4688 branch_grep(struct view *view, struct line *line)
4689 {
4690 struct branch *branch = line->data;
4691 const char *text[] = {
4692 branch->ref->name,
4693 branch->author,
4694 NULL
4695 };
4697 return grep_text(view, text);
4698 }
4700 static void
4701 branch_select(struct view *view, struct line *line)
4702 {
4703 struct branch *branch = line->data;
4705 string_copy_rev(view->ref, branch->ref->id);
4706 string_copy_rev(ref_commit, branch->ref->id);
4707 string_copy_rev(ref_head, branch->ref->id);
4708 string_copy_rev(ref_branch, branch->ref->name);
4709 }
4711 static struct view_ops branch_ops = {
4712 "branch",
4713 branch_open,
4714 branch_read,
4715 branch_draw,
4716 branch_request,
4717 branch_grep,
4718 branch_select,
4719 };
4721 /*
4722 * Status backend
4723 */
4725 struct status {
4726 char status;
4727 struct {
4728 mode_t mode;
4729 char rev[SIZEOF_REV];
4730 char name[SIZEOF_STR];
4731 } old;
4732 struct {
4733 mode_t mode;
4734 char rev[SIZEOF_REV];
4735 char name[SIZEOF_STR];
4736 } new;
4737 };
4739 static char status_onbranch[SIZEOF_STR];
4740 static struct status stage_status;
4741 static enum line_type stage_line_type;
4742 static size_t stage_chunks;
4743 static int *stage_chunk;
4745 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4747 /* This should work even for the "On branch" line. */
4748 static inline bool
4749 status_has_none(struct view *view, struct line *line)
4750 {
4751 return line < view->line + view->lines && !line[1].data;
4752 }
4754 /* Get fields from the diff line:
4755 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4756 */
4757 static inline bool
4758 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4759 {
4760 const char *old_mode = buf + 1;
4761 const char *new_mode = buf + 8;
4762 const char *old_rev = buf + 15;
4763 const char *new_rev = buf + 56;
4764 const char *status = buf + 97;
4766 if (bufsize < 98 ||
4767 old_mode[-1] != ':' ||
4768 new_mode[-1] != ' ' ||
4769 old_rev[-1] != ' ' ||
4770 new_rev[-1] != ' ' ||
4771 status[-1] != ' ')
4772 return FALSE;
4774 file->status = *status;
4776 string_copy_rev(file->old.rev, old_rev);
4777 string_copy_rev(file->new.rev, new_rev);
4779 file->old.mode = strtoul(old_mode, NULL, 8);
4780 file->new.mode = strtoul(new_mode, NULL, 8);
4782 file->old.name[0] = file->new.name[0] = 0;
4784 return TRUE;
4785 }
4787 static bool
4788 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4789 {
4790 struct status *unmerged = NULL;
4791 char *buf;
4792 struct io io;
4794 if (!io_run(&io, IO_RD, opt_cdup, argv))
4795 return FALSE;
4797 add_line_data(view, NULL, type);
4799 while ((buf = io_get(&io, 0, TRUE))) {
4800 struct status *file = unmerged;
4802 if (!file) {
4803 file = calloc(1, sizeof(*file));
4804 if (!file || !add_line_data(view, file, type))
4805 goto error_out;
4806 }
4808 /* Parse diff info part. */
4809 if (status) {
4810 file->status = status;
4811 if (status == 'A')
4812 string_copy(file->old.rev, NULL_ID);
4814 } else if (!file->status || file == unmerged) {
4815 if (!status_get_diff(file, buf, strlen(buf)))
4816 goto error_out;
4818 buf = io_get(&io, 0, TRUE);
4819 if (!buf)
4820 break;
4822 /* Collapse all modified entries that follow an
4823 * associated unmerged entry. */
4824 if (unmerged == file) {
4825 unmerged->status = 'U';
4826 unmerged = NULL;
4827 } else if (file->status == 'U') {
4828 unmerged = file;
4829 }
4830 }
4832 /* Grab the old name for rename/copy. */
4833 if (!*file->old.name &&
4834 (file->status == 'R' || file->status == 'C')) {
4835 string_ncopy(file->old.name, buf, strlen(buf));
4837 buf = io_get(&io, 0, TRUE);
4838 if (!buf)
4839 break;
4840 }
4842 /* git-ls-files just delivers a NUL separated list of
4843 * file names similar to the second half of the
4844 * git-diff-* output. */
4845 string_ncopy(file->new.name, buf, strlen(buf));
4846 if (!*file->old.name)
4847 string_copy(file->old.name, file->new.name);
4848 file = NULL;
4849 }
4851 if (io_error(&io)) {
4852 error_out:
4853 io_done(&io);
4854 return FALSE;
4855 }
4857 if (!view->line[view->lines - 1].data)
4858 add_line_data(view, NULL, LINE_STAT_NONE);
4860 io_done(&io);
4861 return TRUE;
4862 }
4864 /* Don't show unmerged entries in the staged section. */
4865 static const char *status_diff_index_argv[] = {
4866 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4867 "--cached", "-M", "HEAD", NULL
4868 };
4870 static const char *status_diff_files_argv[] = {
4871 "git", "diff-files", "-z", NULL
4872 };
4874 static const char *status_list_other_argv[] = {
4875 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
4876 };
4878 static const char *status_list_no_head_argv[] = {
4879 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4880 };
4882 static const char *update_index_argv[] = {
4883 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4884 };
4886 /* Restore the previous line number to stay in the context or select a
4887 * line with something that can be updated. */
4888 static void
4889 status_restore(struct view *view)
4890 {
4891 if (view->p_lineno >= view->lines)
4892 view->p_lineno = view->lines - 1;
4893 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4894 view->p_lineno++;
4895 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4896 view->p_lineno--;
4898 /* If the above fails, always skip the "On branch" line. */
4899 if (view->p_lineno < view->lines)
4900 view->lineno = view->p_lineno;
4901 else
4902 view->lineno = 1;
4904 if (view->lineno < view->offset)
4905 view->offset = view->lineno;
4906 else if (view->offset + view->height <= view->lineno)
4907 view->offset = view->lineno - view->height + 1;
4909 view->p_restore = FALSE;
4910 }
4912 static void
4913 status_update_onbranch(void)
4914 {
4915 static const char *paths[][2] = {
4916 { "rebase-apply/rebasing", "Rebasing" },
4917 { "rebase-apply/applying", "Applying mailbox" },
4918 { "rebase-apply/", "Rebasing mailbox" },
4919 { "rebase-merge/interactive", "Interactive rebase" },
4920 { "rebase-merge/", "Rebase merge" },
4921 { "MERGE_HEAD", "Merging" },
4922 { "BISECT_LOG", "Bisecting" },
4923 { "HEAD", "On branch" },
4924 };
4925 char buf[SIZEOF_STR];
4926 struct stat stat;
4927 int i;
4929 if (is_initial_commit()) {
4930 string_copy(status_onbranch, "Initial commit");
4931 return;
4932 }
4934 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4935 char *head = opt_head;
4937 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4938 lstat(buf, &stat) < 0)
4939 continue;
4941 if (!*opt_head) {
4942 struct io io;
4944 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
4945 io_read_buf(&io, buf, sizeof(buf))) {
4946 head = buf;
4947 if (!prefixcmp(head, "refs/heads/"))
4948 head += STRING_SIZE("refs/heads/");
4949 }
4950 }
4952 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4953 string_copy(status_onbranch, opt_head);
4954 return;
4955 }
4957 string_copy(status_onbranch, "Not currently on any branch");
4958 }
4960 /* First parse staged info using git-diff-index(1), then parse unstaged
4961 * info using git-diff-files(1), and finally untracked files using
4962 * git-ls-files(1). */
4963 static bool
4964 status_open(struct view *view, enum open_flags flags)
4965 {
4966 reset_view(view);
4968 add_line_data(view, NULL, LINE_STAT_HEAD);
4969 status_update_onbranch();
4971 io_run_bg(update_index_argv);
4973 if (is_initial_commit()) {
4974 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4975 return FALSE;
4976 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4977 return FALSE;
4978 }
4980 if (!opt_untracked_dirs_content)
4981 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
4983 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4984 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4985 return FALSE;
4987 /* Restore the exact position or use the specialized restore
4988 * mode? */
4989 if (!view->p_restore)
4990 status_restore(view);
4991 return TRUE;
4992 }
4994 static bool
4995 status_draw(struct view *view, struct line *line, unsigned int lineno)
4996 {
4997 struct status *status = line->data;
4998 enum line_type type;
4999 const char *text;
5001 if (!status) {
5002 switch (line->type) {
5003 case LINE_STAT_STAGED:
5004 type = LINE_STAT_SECTION;
5005 text = "Changes to be committed:";
5006 break;
5008 case LINE_STAT_UNSTAGED:
5009 type = LINE_STAT_SECTION;
5010 text = "Changed but not updated:";
5011 break;
5013 case LINE_STAT_UNTRACKED:
5014 type = LINE_STAT_SECTION;
5015 text = "Untracked files:";
5016 break;
5018 case LINE_STAT_NONE:
5019 type = LINE_DEFAULT;
5020 text = " (no files)";
5021 break;
5023 case LINE_STAT_HEAD:
5024 type = LINE_STAT_HEAD;
5025 text = status_onbranch;
5026 break;
5028 default:
5029 return FALSE;
5030 }
5031 } else {
5032 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5034 buf[0] = status->status;
5035 if (draw_text(view, line->type, buf))
5036 return TRUE;
5037 type = LINE_DEFAULT;
5038 text = status->new.name;
5039 }
5041 draw_text(view, type, text);
5042 return TRUE;
5043 }
5045 static enum request
5046 status_enter(struct view *view, struct line *line)
5047 {
5048 struct status *status = line->data;
5049 const char *oldpath = status ? status->old.name : NULL;
5050 /* Diffs for unmerged entries are empty when passing the new
5051 * path, so leave it empty. */
5052 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5053 const char *info;
5054 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5055 struct view *stage = VIEW(REQ_VIEW_STAGE);
5057 if (line->type == LINE_STAT_NONE ||
5058 (!status && line[1].type == LINE_STAT_NONE)) {
5059 report("No file to diff");
5060 return REQ_NONE;
5061 }
5063 switch (line->type) {
5064 case LINE_STAT_STAGED:
5065 if (is_initial_commit()) {
5066 const char *no_head_diff_argv[] = {
5067 "git", "diff", "--no-color", "--patch-with-stat",
5068 "--", "/dev/null", newpath, NULL
5069 };
5071 open_argv(view, stage, no_head_diff_argv, opt_cdup, flags);
5072 } else {
5073 const char *index_show_argv[] = {
5074 "git", "diff-index", "--root", "--patch-with-stat",
5075 "-C", "-M", "--cached", "HEAD", "--",
5076 oldpath, newpath, NULL
5077 };
5079 open_argv(view, stage, index_show_argv, opt_cdup, flags);
5080 }
5082 if (status)
5083 info = "Staged changes to %s";
5084 else
5085 info = "Staged changes";
5086 break;
5088 case LINE_STAT_UNSTAGED:
5089 {
5090 const char *files_show_argv[] = {
5091 "git", "diff-files", "--root", "--patch-with-stat",
5092 "-C", "-M", "--", oldpath, newpath, NULL
5093 };
5095 open_argv(view, stage, files_show_argv, opt_cdup, flags);
5096 if (status)
5097 info = "Unstaged changes to %s";
5098 else
5099 info = "Unstaged changes";
5100 break;
5101 }
5102 case LINE_STAT_UNTRACKED:
5103 if (!newpath) {
5104 report("No file to show");
5105 return REQ_NONE;
5106 }
5108 if (!suffixcmp(status->new.name, -1, "/")) {
5109 report("Cannot display a directory");
5110 return REQ_NONE;
5111 }
5113 open_file(view, stage, newpath, flags);
5114 info = "Untracked file %s";
5115 break;
5117 case LINE_STAT_HEAD:
5118 return REQ_NONE;
5120 default:
5121 die("line type %d not handled in switch", line->type);
5122 }
5124 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5125 if (status) {
5126 stage_status = *status;
5127 } else {
5128 memset(&stage_status, 0, sizeof(stage_status));
5129 }
5131 stage_line_type = line->type;
5132 stage_chunks = 0;
5133 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5134 }
5136 return REQ_NONE;
5137 }
5139 static bool
5140 status_exists(struct status *status, enum line_type type)
5141 {
5142 struct view *view = VIEW(REQ_VIEW_STATUS);
5143 unsigned long lineno;
5145 for (lineno = 0; lineno < view->lines; lineno++) {
5146 struct line *line = &view->line[lineno];
5147 struct status *pos = line->data;
5149 if (line->type != type)
5150 continue;
5151 if (!pos && (!status || !status->status) && line[1].data) {
5152 select_view_line(view, lineno);
5153 return TRUE;
5154 }
5155 if (pos && !strcmp(status->new.name, pos->new.name)) {
5156 select_view_line(view, lineno);
5157 return TRUE;
5158 }
5159 }
5161 return FALSE;
5162 }
5165 static bool
5166 status_update_prepare(struct io *io, enum line_type type)
5167 {
5168 const char *staged_argv[] = {
5169 "git", "update-index", "-z", "--index-info", NULL
5170 };
5171 const char *others_argv[] = {
5172 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5173 };
5175 switch (type) {
5176 case LINE_STAT_STAGED:
5177 return io_run(io, IO_WR, opt_cdup, staged_argv);
5179 case LINE_STAT_UNSTAGED:
5180 case LINE_STAT_UNTRACKED:
5181 return io_run(io, IO_WR, opt_cdup, others_argv);
5183 default:
5184 die("line type %d not handled in switch", type);
5185 return FALSE;
5186 }
5187 }
5189 static bool
5190 status_update_write(struct io *io, struct status *status, enum line_type type)
5191 {
5192 char buf[SIZEOF_STR];
5193 size_t bufsize = 0;
5195 switch (type) {
5196 case LINE_STAT_STAGED:
5197 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5198 status->old.mode,
5199 status->old.rev,
5200 status->old.name, 0))
5201 return FALSE;
5202 break;
5204 case LINE_STAT_UNSTAGED:
5205 case LINE_STAT_UNTRACKED:
5206 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5207 return FALSE;
5208 break;
5210 default:
5211 die("line type %d not handled in switch", type);
5212 }
5214 return io_write(io, buf, bufsize);
5215 }
5217 static bool
5218 status_update_file(struct status *status, enum line_type type)
5219 {
5220 struct io io;
5221 bool result;
5223 if (!status_update_prepare(&io, type))
5224 return FALSE;
5226 result = status_update_write(&io, status, type);
5227 return io_done(&io) && result;
5228 }
5230 static bool
5231 status_update_files(struct view *view, struct line *line)
5232 {
5233 char buf[sizeof(view->ref)];
5234 struct io io;
5235 bool result = TRUE;
5236 struct line *pos = view->line + view->lines;
5237 int files = 0;
5238 int file, done;
5239 int cursor_y = -1, cursor_x = -1;
5241 if (!status_update_prepare(&io, line->type))
5242 return FALSE;
5244 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5245 files++;
5247 string_copy(buf, view->ref);
5248 getsyx(cursor_y, cursor_x);
5249 for (file = 0, done = 5; result && file < files; line++, file++) {
5250 int almost_done = file * 100 / files;
5252 if (almost_done > done) {
5253 done = almost_done;
5254 string_format(view->ref, "updating file %u of %u (%d%% done)",
5255 file, files, done);
5256 update_view_title(view);
5257 setsyx(cursor_y, cursor_x);
5258 doupdate();
5259 }
5260 result = status_update_write(&io, line->data, line->type);
5261 }
5262 string_copy(view->ref, buf);
5264 return io_done(&io) && result;
5265 }
5267 static bool
5268 status_update(struct view *view)
5269 {
5270 struct line *line = &view->line[view->lineno];
5272 assert(view->lines);
5274 if (!line->data) {
5275 /* This should work even for the "On branch" line. */
5276 if (line < view->line + view->lines && !line[1].data) {
5277 report("Nothing to update");
5278 return FALSE;
5279 }
5281 if (!status_update_files(view, line + 1)) {
5282 report("Failed to update file status");
5283 return FALSE;
5284 }
5286 } else if (!status_update_file(line->data, line->type)) {
5287 report("Failed to update file status");
5288 return FALSE;
5289 }
5291 return TRUE;
5292 }
5294 static bool
5295 status_revert(struct status *status, enum line_type type, bool has_none)
5296 {
5297 if (!status || type != LINE_STAT_UNSTAGED) {
5298 if (type == LINE_STAT_STAGED) {
5299 report("Cannot revert changes to staged files");
5300 } else if (type == LINE_STAT_UNTRACKED) {
5301 report("Cannot revert changes to untracked files");
5302 } else if (has_none) {
5303 report("Nothing to revert");
5304 } else {
5305 report("Cannot revert changes to multiple files");
5306 }
5308 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5309 char mode[10] = "100644";
5310 const char *reset_argv[] = {
5311 "git", "update-index", "--cacheinfo", mode,
5312 status->old.rev, status->old.name, NULL
5313 };
5314 const char *checkout_argv[] = {
5315 "git", "checkout", "--", status->old.name, NULL
5316 };
5318 if (status->status == 'U') {
5319 string_format(mode, "%5o", status->old.mode);
5321 if (status->old.mode == 0 && status->new.mode == 0) {
5322 reset_argv[2] = "--force-remove";
5323 reset_argv[3] = status->old.name;
5324 reset_argv[4] = NULL;
5325 }
5327 if (!io_run_fg(reset_argv, opt_cdup))
5328 return FALSE;
5329 if (status->old.mode == 0 && status->new.mode == 0)
5330 return TRUE;
5331 }
5333 return io_run_fg(checkout_argv, opt_cdup);
5334 }
5336 return FALSE;
5337 }
5339 static enum request
5340 status_request(struct view *view, enum request request, struct line *line)
5341 {
5342 struct status *status = line->data;
5344 switch (request) {
5345 case REQ_STATUS_UPDATE:
5346 if (!status_update(view))
5347 return REQ_NONE;
5348 break;
5350 case REQ_STATUS_REVERT:
5351 if (!status_revert(status, line->type, status_has_none(view, line)))
5352 return REQ_NONE;
5353 break;
5355 case REQ_STATUS_MERGE:
5356 if (!status || status->status != 'U') {
5357 report("Merging only possible for files with unmerged status ('U').");
5358 return REQ_NONE;
5359 }
5360 open_mergetool(status->new.name);
5361 break;
5363 case REQ_EDIT:
5364 if (!status)
5365 return request;
5366 if (status->status == 'D') {
5367 report("File has been deleted.");
5368 return REQ_NONE;
5369 }
5371 open_editor(status->new.name);
5372 break;
5374 case REQ_VIEW_BLAME:
5375 if (status)
5376 opt_ref[0] = 0;
5377 return request;
5379 case REQ_ENTER:
5380 /* After returning the status view has been split to
5381 * show the stage view. No further reloading is
5382 * necessary. */
5383 return status_enter(view, line);
5385 case REQ_REFRESH:
5386 /* Simply reload the view. */
5387 break;
5389 default:
5390 return request;
5391 }
5393 refresh_view(view);
5395 return REQ_NONE;
5396 }
5398 static void
5399 status_select(struct view *view, struct line *line)
5400 {
5401 struct status *status = line->data;
5402 char file[SIZEOF_STR] = "all files";
5403 const char *text;
5404 const char *key;
5406 if (status && !string_format(file, "'%s'", status->new.name))
5407 return;
5409 if (!status && line[1].type == LINE_STAT_NONE)
5410 line++;
5412 switch (line->type) {
5413 case LINE_STAT_STAGED:
5414 text = "Press %s to unstage %s for commit";
5415 break;
5417 case LINE_STAT_UNSTAGED:
5418 text = "Press %s to stage %s for commit";
5419 break;
5421 case LINE_STAT_UNTRACKED:
5422 text = "Press %s to stage %s for addition";
5423 break;
5425 case LINE_STAT_HEAD:
5426 case LINE_STAT_NONE:
5427 text = "Nothing to update";
5428 break;
5430 default:
5431 die("line type %d not handled in switch", line->type);
5432 }
5434 if (status && status->status == 'U') {
5435 text = "Press %s to resolve conflict in %s";
5436 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5438 } else {
5439 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5440 }
5442 string_format(view->ref, text, key, file);
5443 if (status)
5444 string_copy(opt_file, status->new.name);
5445 }
5447 static bool
5448 status_grep(struct view *view, struct line *line)
5449 {
5450 struct status *status = line->data;
5452 if (status) {
5453 const char buf[2] = { status->status, 0 };
5454 const char *text[] = { status->new.name, buf, NULL };
5456 return grep_text(view, text);
5457 }
5459 return FALSE;
5460 }
5462 static struct view_ops status_ops = {
5463 "file",
5464 status_open,
5465 NULL,
5466 status_draw,
5467 status_request,
5468 status_grep,
5469 status_select,
5470 };
5473 static bool
5474 stage_diff_write(struct io *io, struct line *line, struct line *end)
5475 {
5476 while (line < end) {
5477 if (!io_write(io, line->data, strlen(line->data)) ||
5478 !io_write(io, "\n", 1))
5479 return FALSE;
5480 line++;
5481 if (line->type == LINE_DIFF_CHUNK ||
5482 line->type == LINE_DIFF_HEADER)
5483 break;
5484 }
5486 return TRUE;
5487 }
5489 static struct line *
5490 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5491 {
5492 for (; view->line < line; line--)
5493 if (line->type == type)
5494 return line;
5496 return NULL;
5497 }
5499 static bool
5500 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5501 {
5502 const char *apply_argv[SIZEOF_ARG] = {
5503 "git", "apply", "--whitespace=nowarn", NULL
5504 };
5505 struct line *diff_hdr;
5506 struct io io;
5507 int argc = 3;
5509 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5510 if (!diff_hdr)
5511 return FALSE;
5513 if (!revert)
5514 apply_argv[argc++] = "--cached";
5515 if (revert || stage_line_type == LINE_STAT_STAGED)
5516 apply_argv[argc++] = "-R";
5517 apply_argv[argc++] = "-";
5518 apply_argv[argc++] = NULL;
5519 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5520 return FALSE;
5522 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5523 !stage_diff_write(&io, chunk, view->line + view->lines))
5524 chunk = NULL;
5526 io_done(&io);
5527 io_run_bg(update_index_argv);
5529 return chunk ? TRUE : FALSE;
5530 }
5532 static bool
5533 stage_update(struct view *view, struct line *line)
5534 {
5535 struct line *chunk = NULL;
5537 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5538 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5540 if (chunk) {
5541 if (!stage_apply_chunk(view, chunk, FALSE)) {
5542 report("Failed to apply chunk");
5543 return FALSE;
5544 }
5546 } else if (!stage_status.status) {
5547 view = VIEW(REQ_VIEW_STATUS);
5549 for (line = view->line; line < view->line + view->lines; line++)
5550 if (line->type == stage_line_type)
5551 break;
5553 if (!status_update_files(view, line + 1)) {
5554 report("Failed to update files");
5555 return FALSE;
5556 }
5558 } else if (!status_update_file(&stage_status, stage_line_type)) {
5559 report("Failed to update file");
5560 return FALSE;
5561 }
5563 return TRUE;
5564 }
5566 static bool
5567 stage_revert(struct view *view, struct line *line)
5568 {
5569 struct line *chunk = NULL;
5571 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5572 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5574 if (chunk) {
5575 if (!prompt_yesno("Are you sure you want to revert changes?"))
5576 return FALSE;
5578 if (!stage_apply_chunk(view, chunk, TRUE)) {
5579 report("Failed to revert chunk");
5580 return FALSE;
5581 }
5582 return TRUE;
5584 } else {
5585 return status_revert(stage_status.status ? &stage_status : NULL,
5586 stage_line_type, FALSE);
5587 }
5588 }
5591 static void
5592 stage_next(struct view *view, struct line *line)
5593 {
5594 int i;
5596 if (!stage_chunks) {
5597 for (line = view->line; line < view->line + view->lines; line++) {
5598 if (line->type != LINE_DIFF_CHUNK)
5599 continue;
5601 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5602 report("Allocation failure");
5603 return;
5604 }
5606 stage_chunk[stage_chunks++] = line - view->line;
5607 }
5608 }
5610 for (i = 0; i < stage_chunks; i++) {
5611 if (stage_chunk[i] > view->lineno) {
5612 do_scroll_view(view, stage_chunk[i] - view->lineno);
5613 report("Chunk %d of %d", i + 1, stage_chunks);
5614 return;
5615 }
5616 }
5618 report("No next chunk found");
5619 }
5621 static enum request
5622 stage_request(struct view *view, enum request request, struct line *line)
5623 {
5624 switch (request) {
5625 case REQ_STATUS_UPDATE:
5626 if (!stage_update(view, line))
5627 return REQ_NONE;
5628 break;
5630 case REQ_STATUS_REVERT:
5631 if (!stage_revert(view, line))
5632 return REQ_NONE;
5633 break;
5635 case REQ_STAGE_NEXT:
5636 if (stage_line_type == LINE_STAT_UNTRACKED) {
5637 report("File is untracked; press %s to add",
5638 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
5639 return REQ_NONE;
5640 }
5641 stage_next(view, line);
5642 return REQ_NONE;
5644 case REQ_EDIT:
5645 if (!stage_status.new.name[0])
5646 return request;
5647 if (stage_status.status == 'D') {
5648 report("File has been deleted.");
5649 return REQ_NONE;
5650 }
5652 open_editor(stage_status.new.name);
5653 break;
5655 case REQ_REFRESH:
5656 /* Reload everything ... */
5657 break;
5659 case REQ_VIEW_BLAME:
5660 if (stage_status.new.name[0]) {
5661 string_copy(opt_file, stage_status.new.name);
5662 opt_ref[0] = 0;
5663 }
5664 return request;
5666 case REQ_ENTER:
5667 return pager_request(view, request, line);
5669 default:
5670 return request;
5671 }
5673 refresh_view(view->parent);
5675 /* Check whether the staged entry still exists, and close the
5676 * stage view if it doesn't. */
5677 if (!status_exists(&stage_status, stage_line_type)) {
5678 status_restore(VIEW(REQ_VIEW_STATUS));
5679 return REQ_VIEW_CLOSE;
5680 }
5682 refresh_view(view);
5684 return REQ_NONE;
5685 }
5687 static struct view_ops stage_ops = {
5688 "line",
5689 view_open,
5690 pager_read,
5691 pager_draw,
5692 stage_request,
5693 pager_grep,
5694 pager_select,
5695 };
5698 /*
5699 * Revision graph
5700 */
5702 static const enum line_type graph_colors[] = {
5703 LINE_GRAPH_LINE_0,
5704 LINE_GRAPH_LINE_1,
5705 LINE_GRAPH_LINE_2,
5706 LINE_GRAPH_LINE_3,
5707 LINE_GRAPH_LINE_4,
5708 LINE_GRAPH_LINE_5,
5709 LINE_GRAPH_LINE_6,
5710 };
5712 static enum line_type get_graph_color(struct graph_symbol *symbol)
5713 {
5714 if (symbol->commit)
5715 return LINE_GRAPH_COMMIT;
5716 assert(symbol->color < ARRAY_SIZE(graph_colors));
5717 return graph_colors[symbol->color];
5718 }
5720 static bool
5721 draw_graph_utf8(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5722 {
5723 const char *chars = graph_symbol_to_utf8(symbol);
5725 return draw_text(view, color, chars + !!first);
5726 }
5728 static bool
5729 draw_graph_ascii(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5730 {
5731 const char *chars = graph_symbol_to_ascii(symbol);
5733 return draw_text(view, color, chars + !!first);
5734 }
5736 static bool
5737 draw_graph_chtype(struct view *view, struct graph_symbol *symbol, enum line_type color, bool first)
5738 {
5739 const chtype *chars = graph_symbol_to_chtype(symbol);
5741 return draw_graphic(view, color, chars + !!first, 2 - !!first, FALSE);
5742 }
5744 typedef bool (*draw_graph_fn)(struct view *, struct graph_symbol *, enum line_type, bool);
5746 static bool draw_graph(struct view *view, struct graph_canvas *canvas)
5747 {
5748 static const draw_graph_fn fns[] = {
5749 draw_graph_ascii,
5750 draw_graph_chtype,
5751 draw_graph_utf8
5752 };
5753 draw_graph_fn fn = fns[opt_line_graphics];
5754 int i;
5756 for (i = 0; i < canvas->size; i++) {
5757 struct graph_symbol *symbol = &canvas->symbols[i];
5758 enum line_type color = get_graph_color(symbol);
5760 if (fn(view, symbol, color, i == 0))
5761 return TRUE;
5762 }
5764 return draw_text(view, LINE_MAIN_REVGRAPH, " ");
5765 }
5767 /*
5768 * Main view backend
5769 */
5771 struct commit {
5772 char id[SIZEOF_REV]; /* SHA1 ID. */
5773 char title[128]; /* First line of the commit message. */
5774 const char *author; /* Author of the commit. */
5775 struct time time; /* Date from the author ident. */
5776 struct ref_list *refs; /* Repository references. */
5777 struct graph_canvas graph; /* Ancestry chain graphics. */
5778 };
5780 static bool
5781 main_open(struct view *view, enum open_flags flags)
5782 {
5783 static const char *main_argv[] = {
5784 "git", "log", "--no-color", "--pretty=raw", "--parents",
5785 "--topo-order", "%(diffargs)", "%(revargs)",
5786 "--", "%(fileargs)", NULL
5787 };
5789 return begin_update(view, NULL, main_argv, flags);
5790 }
5792 static bool
5793 main_draw(struct view *view, struct line *line, unsigned int lineno)
5794 {
5795 struct commit *commit = line->data;
5797 if (!commit->author)
5798 return FALSE;
5800 if (draw_date(view, &commit->time))
5801 return TRUE;
5803 if (draw_author(view, commit->author))
5804 return TRUE;
5806 if (opt_rev_graph && draw_graph(view, &commit->graph))
5807 return TRUE;
5809 if (draw_refs(view, commit->refs))
5810 return TRUE;
5812 draw_text(view, LINE_DEFAULT, commit->title);
5813 return TRUE;
5814 }
5816 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5817 static bool
5818 main_read(struct view *view, char *line)
5819 {
5820 static struct graph graph;
5821 enum line_type type;
5822 struct commit *commit;
5824 if (!line) {
5825 if (!view->lines && !view->prev)
5826 die("No revisions match the given arguments.");
5827 if (view->lines > 0) {
5828 commit = view->line[view->lines - 1].data;
5829 view->line[view->lines - 1].dirty = 1;
5830 if (!commit->author) {
5831 view->lines--;
5832 free(commit);
5833 }
5834 }
5836 done_graph(&graph);
5837 return TRUE;
5838 }
5840 type = get_line_type(line);
5841 if (type == LINE_COMMIT) {
5842 bool is_boundary;
5844 commit = calloc(1, sizeof(struct commit));
5845 if (!commit)
5846 return FALSE;
5848 line += STRING_SIZE("commit ");
5849 is_boundary = *line == '-';
5850 if (is_boundary)
5851 line++;
5853 string_copy_rev(commit->id, line);
5854 commit->refs = get_ref_list(commit->id);
5855 add_line_data(view, commit, LINE_MAIN_COMMIT);
5856 graph_add_commit(&graph, &commit->graph, commit->id, line, is_boundary);
5857 return TRUE;
5858 }
5860 if (!view->lines)
5861 return TRUE;
5862 commit = view->line[view->lines - 1].data;
5864 switch (type) {
5865 case LINE_PARENT:
5866 if (!graph.has_parents)
5867 graph_add_parent(&graph, line + STRING_SIZE("parent "));
5868 break;
5870 case LINE_AUTHOR:
5871 parse_author_line(line + STRING_SIZE("author "),
5872 &commit->author, &commit->time);
5873 graph_render_parents(&graph);
5874 break;
5876 default:
5877 /* Fill in the commit title if it has not already been set. */
5878 if (commit->title[0])
5879 break;
5881 /* Require titles to start with a non-space character at the
5882 * offset used by git log. */
5883 if (strncmp(line, " ", 4))
5884 break;
5885 line += 4;
5886 /* Well, if the title starts with a whitespace character,
5887 * try to be forgiving. Otherwise we end up with no title. */
5888 while (isspace(*line))
5889 line++;
5890 if (*line == '\0')
5891 break;
5892 /* FIXME: More graceful handling of titles; append "..." to
5893 * shortened titles, etc. */
5895 string_expand(commit->title, sizeof(commit->title), line, 1);
5896 view->line[view->lines - 1].dirty = 1;
5897 }
5899 return TRUE;
5900 }
5902 static enum request
5903 main_request(struct view *view, enum request request, struct line *line)
5904 {
5905 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5907 switch (request) {
5908 case REQ_ENTER:
5909 if (view_is_displayed(view) && display[0] != view)
5910 maximize_view(view, TRUE);
5911 open_view(view, REQ_VIEW_DIFF, flags);
5912 break;
5913 case REQ_REFRESH:
5914 load_refs();
5915 refresh_view(view);
5916 break;
5917 default:
5918 return request;
5919 }
5921 return REQ_NONE;
5922 }
5924 static bool
5925 grep_refs(struct ref_list *list, regex_t *regex)
5926 {
5927 regmatch_t pmatch;
5928 size_t i;
5930 if (!opt_show_refs || !list)
5931 return FALSE;
5933 for (i = 0; i < list->size; i++) {
5934 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5935 return TRUE;
5936 }
5938 return FALSE;
5939 }
5941 static bool
5942 main_grep(struct view *view, struct line *line)
5943 {
5944 struct commit *commit = line->data;
5945 const char *text[] = {
5946 commit->title,
5947 opt_author ? commit->author : "",
5948 mkdate(&commit->time, opt_date),
5949 NULL
5950 };
5952 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
5953 }
5955 static void
5956 main_select(struct view *view, struct line *line)
5957 {
5958 struct commit *commit = line->data;
5960 string_copy_rev(view->ref, commit->id);
5961 string_copy_rev(ref_commit, view->ref);
5962 }
5964 static struct view_ops main_ops = {
5965 "commit",
5966 main_open,
5967 main_read,
5968 main_draw,
5969 main_request,
5970 main_grep,
5971 main_select,
5972 };
5975 /*
5976 * Status management
5977 */
5979 /* Whether or not the curses interface has been initialized. */
5980 static bool cursed = FALSE;
5982 /* Terminal hacks and workarounds. */
5983 static bool use_scroll_redrawwin;
5984 static bool use_scroll_status_wclear;
5986 /* The status window is used for polling keystrokes. */
5987 static WINDOW *status_win;
5989 /* Reading from the prompt? */
5990 static bool input_mode = FALSE;
5992 static bool status_empty = FALSE;
5994 /* Update status and title window. */
5995 static void
5996 report(const char *msg, ...)
5997 {
5998 struct view *view = display[current_view];
6000 if (input_mode)
6001 return;
6003 if (!view) {
6004 char buf[SIZEOF_STR];
6005 va_list args;
6007 va_start(args, msg);
6008 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6009 buf[sizeof(buf) - 1] = 0;
6010 buf[sizeof(buf) - 2] = '.';
6011 buf[sizeof(buf) - 3] = '.';
6012 buf[sizeof(buf) - 4] = '.';
6013 }
6014 va_end(args);
6015 die("%s", buf);
6016 }
6018 if (!status_empty || *msg) {
6019 va_list args;
6021 va_start(args, msg);
6023 wmove(status_win, 0, 0);
6024 if (view->has_scrolled && use_scroll_status_wclear)
6025 wclear(status_win);
6026 if (*msg) {
6027 vwprintw(status_win, msg, args);
6028 status_empty = FALSE;
6029 } else {
6030 status_empty = TRUE;
6031 }
6032 wclrtoeol(status_win);
6033 wnoutrefresh(status_win);
6035 va_end(args);
6036 }
6038 update_view_title(view);
6039 }
6041 static void
6042 init_display(void)
6043 {
6044 const char *term;
6045 int x, y;
6047 /* Initialize the curses library */
6048 if (isatty(STDIN_FILENO)) {
6049 cursed = !!initscr();
6050 opt_tty = stdin;
6051 } else {
6052 /* Leave stdin and stdout alone when acting as a pager. */
6053 opt_tty = fopen("/dev/tty", "r+");
6054 if (!opt_tty)
6055 die("Failed to open /dev/tty");
6056 cursed = !!newterm(NULL, opt_tty, opt_tty);
6057 }
6059 if (!cursed)
6060 die("Failed to initialize curses");
6062 nonl(); /* Disable conversion and detect newlines from input. */
6063 cbreak(); /* Take input chars one at a time, no wait for \n */
6064 noecho(); /* Don't echo input */
6065 leaveok(stdscr, FALSE);
6067 if (has_colors())
6068 init_colors();
6070 getmaxyx(stdscr, y, x);
6071 status_win = newwin(1, x, y - 1, 0);
6072 if (!status_win)
6073 die("Failed to create status window");
6075 /* Enable keyboard mapping */
6076 keypad(status_win, TRUE);
6077 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6079 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6080 set_tabsize(opt_tab_size);
6081 #else
6082 TABSIZE = opt_tab_size;
6083 #endif
6085 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6086 if (term && !strcmp(term, "gnome-terminal")) {
6087 /* In the gnome-terminal-emulator, the message from
6088 * scrolling up one line when impossible followed by
6089 * scrolling down one line causes corruption of the
6090 * status line. This is fixed by calling wclear. */
6091 use_scroll_status_wclear = TRUE;
6092 use_scroll_redrawwin = FALSE;
6094 } else if (term && !strcmp(term, "xrvt-xpm")) {
6095 /* No problems with full optimizations in xrvt-(unicode)
6096 * and aterm. */
6097 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6099 } else {
6100 /* When scrolling in (u)xterm the last line in the
6101 * scrolling direction will update slowly. */
6102 use_scroll_redrawwin = TRUE;
6103 use_scroll_status_wclear = FALSE;
6104 }
6105 }
6107 static int
6108 get_input(int prompt_position)
6109 {
6110 struct view *view;
6111 int i, key, cursor_y, cursor_x;
6113 if (prompt_position)
6114 input_mode = TRUE;
6116 while (TRUE) {
6117 bool loading = FALSE;
6119 foreach_view (view, i) {
6120 update_view(view);
6121 if (view_is_displayed(view) && view->has_scrolled &&
6122 use_scroll_redrawwin)
6123 redrawwin(view->win);
6124 view->has_scrolled = FALSE;
6125 if (view->pipe)
6126 loading = TRUE;
6127 }
6129 /* Update the cursor position. */
6130 if (prompt_position) {
6131 getbegyx(status_win, cursor_y, cursor_x);
6132 cursor_x = prompt_position;
6133 } else {
6134 view = display[current_view];
6135 getbegyx(view->win, cursor_y, cursor_x);
6136 cursor_x = view->width - 1;
6137 cursor_y += view->lineno - view->offset;
6138 }
6139 setsyx(cursor_y, cursor_x);
6141 /* Refresh, accept single keystroke of input */
6142 doupdate();
6143 nodelay(status_win, loading);
6144 key = wgetch(status_win);
6146 /* wgetch() with nodelay() enabled returns ERR when
6147 * there's no input. */
6148 if (key == ERR) {
6150 } else if (key == KEY_RESIZE) {
6151 int height, width;
6153 getmaxyx(stdscr, height, width);
6155 wresize(status_win, 1, width);
6156 mvwin(status_win, height - 1, 0);
6157 wnoutrefresh(status_win);
6158 resize_display();
6159 redraw_display(TRUE);
6161 } else {
6162 input_mode = FALSE;
6163 return key;
6164 }
6165 }
6166 }
6168 static char *
6169 prompt_input(const char *prompt, input_handler handler, void *data)
6170 {
6171 enum input_status status = INPUT_OK;
6172 static char buf[SIZEOF_STR];
6173 size_t pos = 0;
6175 buf[pos] = 0;
6177 while (status == INPUT_OK || status == INPUT_SKIP) {
6178 int key;
6180 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6181 wclrtoeol(status_win);
6183 key = get_input(pos + 1);
6184 switch (key) {
6185 case KEY_RETURN:
6186 case KEY_ENTER:
6187 case '\n':
6188 status = pos ? INPUT_STOP : INPUT_CANCEL;
6189 break;
6191 case KEY_BACKSPACE:
6192 if (pos > 0)
6193 buf[--pos] = 0;
6194 else
6195 status = INPUT_CANCEL;
6196 break;
6198 case KEY_ESC:
6199 status = INPUT_CANCEL;
6200 break;
6202 default:
6203 if (pos >= sizeof(buf)) {
6204 report("Input string too long");
6205 return NULL;
6206 }
6208 status = handler(data, buf, key);
6209 if (status == INPUT_OK)
6210 buf[pos++] = (char) key;
6211 }
6212 }
6214 /* Clear the status window */
6215 status_empty = FALSE;
6216 report("");
6218 if (status == INPUT_CANCEL)
6219 return NULL;
6221 buf[pos++] = 0;
6223 return buf;
6224 }
6226 static enum input_status
6227 prompt_yesno_handler(void *data, char *buf, int c)
6228 {
6229 if (c == 'y' || c == 'Y')
6230 return INPUT_STOP;
6231 if (c == 'n' || c == 'N')
6232 return INPUT_CANCEL;
6233 return INPUT_SKIP;
6234 }
6236 static bool
6237 prompt_yesno(const char *prompt)
6238 {
6239 char prompt2[SIZEOF_STR];
6241 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6242 return FALSE;
6244 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6245 }
6247 static enum input_status
6248 read_prompt_handler(void *data, char *buf, int c)
6249 {
6250 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6251 }
6253 static char *
6254 read_prompt(const char *prompt)
6255 {
6256 return prompt_input(prompt, read_prompt_handler, NULL);
6257 }
6259 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6260 {
6261 enum input_status status = INPUT_OK;
6262 int size = 0;
6264 while (items[size].text)
6265 size++;
6267 while (status == INPUT_OK) {
6268 const struct menu_item *item = &items[*selected];
6269 int key;
6270 int i;
6272 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6273 prompt, *selected + 1, size);
6274 if (item->hotkey)
6275 wprintw(status_win, "[%c] ", (char) item->hotkey);
6276 wprintw(status_win, "%s", item->text);
6277 wclrtoeol(status_win);
6279 key = get_input(COLS - 1);
6280 switch (key) {
6281 case KEY_RETURN:
6282 case KEY_ENTER:
6283 case '\n':
6284 status = INPUT_STOP;
6285 break;
6287 case KEY_LEFT:
6288 case KEY_UP:
6289 *selected = *selected - 1;
6290 if (*selected < 0)
6291 *selected = size - 1;
6292 break;
6294 case KEY_RIGHT:
6295 case KEY_DOWN:
6296 *selected = (*selected + 1) % size;
6297 break;
6299 case KEY_ESC:
6300 status = INPUT_CANCEL;
6301 break;
6303 default:
6304 for (i = 0; items[i].text; i++)
6305 if (items[i].hotkey == key) {
6306 *selected = i;
6307 status = INPUT_STOP;
6308 break;
6309 }
6310 }
6311 }
6313 /* Clear the status window */
6314 status_empty = FALSE;
6315 report("");
6317 return status != INPUT_CANCEL;
6318 }
6320 /*
6321 * Repository properties
6322 */
6324 static struct ref **refs = NULL;
6325 static size_t refs_size = 0;
6326 static struct ref *refs_head = NULL;
6328 static struct ref_list **ref_lists = NULL;
6329 static size_t ref_lists_size = 0;
6331 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6332 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6333 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6335 static int
6336 compare_refs(const void *ref1_, const void *ref2_)
6337 {
6338 const struct ref *ref1 = *(const struct ref **)ref1_;
6339 const struct ref *ref2 = *(const struct ref **)ref2_;
6341 if (ref1->tag != ref2->tag)
6342 return ref2->tag - ref1->tag;
6343 if (ref1->ltag != ref2->ltag)
6344 return ref2->ltag - ref2->ltag;
6345 if (ref1->head != ref2->head)
6346 return ref2->head - ref1->head;
6347 if (ref1->tracked != ref2->tracked)
6348 return ref2->tracked - ref1->tracked;
6349 if (ref1->remote != ref2->remote)
6350 return ref2->remote - ref1->remote;
6351 return strcmp(ref1->name, ref2->name);
6352 }
6354 static void
6355 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6356 {
6357 size_t i;
6359 for (i = 0; i < refs_size; i++)
6360 if (!visitor(data, refs[i]))
6361 break;
6362 }
6364 static struct ref *
6365 get_ref_head()
6366 {
6367 return refs_head;
6368 }
6370 static struct ref_list *
6371 get_ref_list(const char *id)
6372 {
6373 struct ref_list *list;
6374 size_t i;
6376 for (i = 0; i < ref_lists_size; i++)
6377 if (!strcmp(id, ref_lists[i]->id))
6378 return ref_lists[i];
6380 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6381 return NULL;
6382 list = calloc(1, sizeof(*list));
6383 if (!list)
6384 return NULL;
6386 for (i = 0; i < refs_size; i++) {
6387 if (!strcmp(id, refs[i]->id) &&
6388 realloc_refs_list(&list->refs, list->size, 1))
6389 list->refs[list->size++] = refs[i];
6390 }
6392 if (!list->refs) {
6393 free(list);
6394 return NULL;
6395 }
6397 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6398 ref_lists[ref_lists_size++] = list;
6399 return list;
6400 }
6402 static int
6403 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6404 {
6405 struct ref *ref = NULL;
6406 bool tag = FALSE;
6407 bool ltag = FALSE;
6408 bool remote = FALSE;
6409 bool tracked = FALSE;
6410 bool head = FALSE;
6411 int from = 0, to = refs_size - 1;
6413 if (!prefixcmp(name, "refs/tags/")) {
6414 if (!suffixcmp(name, namelen, "^{}")) {
6415 namelen -= 3;
6416 name[namelen] = 0;
6417 } else {
6418 ltag = TRUE;
6419 }
6421 tag = TRUE;
6422 namelen -= STRING_SIZE("refs/tags/");
6423 name += STRING_SIZE("refs/tags/");
6425 } else if (!prefixcmp(name, "refs/remotes/")) {
6426 remote = TRUE;
6427 namelen -= STRING_SIZE("refs/remotes/");
6428 name += STRING_SIZE("refs/remotes/");
6429 tracked = !strcmp(opt_remote, name);
6431 } else if (!prefixcmp(name, "refs/heads/")) {
6432 namelen -= STRING_SIZE("refs/heads/");
6433 name += STRING_SIZE("refs/heads/");
6434 if (!strncmp(opt_head, name, namelen))
6435 return OK;
6437 } else if (!strcmp(name, "HEAD")) {
6438 head = TRUE;
6439 if (*opt_head) {
6440 namelen = strlen(opt_head);
6441 name = opt_head;
6442 }
6443 }
6445 /* If we are reloading or it's an annotated tag, replace the
6446 * previous SHA1 with the resolved commit id; relies on the fact
6447 * git-ls-remote lists the commit id of an annotated tag right
6448 * before the commit id it points to. */
6449 while (from <= to) {
6450 size_t pos = (to + from) / 2;
6451 int cmp = strcmp(name, refs[pos]->name);
6453 if (!cmp) {
6454 ref = refs[pos];
6455 break;
6456 }
6458 if (cmp < 0)
6459 to = pos - 1;
6460 else
6461 from = pos + 1;
6462 }
6464 if (!ref) {
6465 if (!realloc_refs(&refs, refs_size, 1))
6466 return ERR;
6467 ref = calloc(1, sizeof(*ref) + namelen);
6468 if (!ref)
6469 return ERR;
6470 memmove(refs + from + 1, refs + from,
6471 (refs_size - from) * sizeof(*refs));
6472 refs[from] = ref;
6473 strncpy(ref->name, name, namelen);
6474 refs_size++;
6475 }
6477 ref->head = head;
6478 ref->tag = tag;
6479 ref->ltag = ltag;
6480 ref->remote = remote;
6481 ref->tracked = tracked;
6482 string_copy_rev(ref->id, id);
6484 if (head)
6485 refs_head = ref;
6486 return OK;
6487 }
6489 static int
6490 load_refs(void)
6491 {
6492 const char *head_argv[] = {
6493 "git", "symbolic-ref", "HEAD", NULL
6494 };
6495 static const char *ls_remote_argv[SIZEOF_ARG] = {
6496 "git", "ls-remote", opt_git_dir, NULL
6497 };
6498 static bool init = FALSE;
6499 size_t i;
6501 if (!init) {
6502 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
6503 die("TIG_LS_REMOTE contains too many arguments");
6504 init = TRUE;
6505 }
6507 if (!*opt_git_dir)
6508 return OK;
6510 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
6511 !prefixcmp(opt_head, "refs/heads/")) {
6512 char *offset = opt_head + STRING_SIZE("refs/heads/");
6514 memmove(opt_head, offset, strlen(offset) + 1);
6515 }
6517 refs_head = NULL;
6518 for (i = 0; i < refs_size; i++)
6519 refs[i]->id[0] = 0;
6521 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
6522 return ERR;
6524 /* Update the ref lists to reflect changes. */
6525 for (i = 0; i < ref_lists_size; i++) {
6526 struct ref_list *list = ref_lists[i];
6527 size_t old, new;
6529 for (old = new = 0; old < list->size; old++)
6530 if (!strcmp(list->id, list->refs[old]->id))
6531 list->refs[new++] = list->refs[old];
6532 list->size = new;
6533 }
6535 return OK;
6536 }
6538 static void
6539 set_remote_branch(const char *name, const char *value, size_t valuelen)
6540 {
6541 if (!strcmp(name, ".remote")) {
6542 string_ncopy(opt_remote, value, valuelen);
6544 } else if (*opt_remote && !strcmp(name, ".merge")) {
6545 size_t from = strlen(opt_remote);
6547 if (!prefixcmp(value, "refs/heads/"))
6548 value += STRING_SIZE("refs/heads/");
6550 if (!string_format_from(opt_remote, &from, "/%s", value))
6551 opt_remote[0] = 0;
6552 }
6553 }
6555 static void
6556 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
6557 {
6558 const char *argv[SIZEOF_ARG] = { name, "=" };
6559 int argc = 1 + (cmd == option_set_command);
6560 enum option_code error;
6562 if (!argv_from_string(argv, &argc, value))
6563 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
6564 else
6565 error = cmd(argc, argv);
6567 if (error != OPT_OK)
6568 warn("Option 'tig.%s': %s", name, option_errors[error]);
6569 }
6571 static bool
6572 set_environment_variable(const char *name, const char *value)
6573 {
6574 size_t len = strlen(name) + 1 + strlen(value) + 1;
6575 char *env = malloc(len);
6577 if (env &&
6578 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6579 putenv(env) == 0)
6580 return TRUE;
6581 free(env);
6582 return FALSE;
6583 }
6585 static void
6586 set_work_tree(const char *value)
6587 {
6588 char cwd[SIZEOF_STR];
6590 if (!getcwd(cwd, sizeof(cwd)))
6591 die("Failed to get cwd path: %s", strerror(errno));
6592 if (chdir(opt_git_dir) < 0)
6593 die("Failed to chdir(%s): %s", strerror(errno));
6594 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6595 die("Failed to get git path: %s", strerror(errno));
6596 if (chdir(cwd) < 0)
6597 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6598 if (chdir(value) < 0)
6599 die("Failed to chdir(%s): %s", value, strerror(errno));
6600 if (!getcwd(cwd, sizeof(cwd)))
6601 die("Failed to get cwd path: %s", strerror(errno));
6602 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6603 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6604 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6605 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6606 opt_is_inside_work_tree = TRUE;
6607 }
6609 static int
6610 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6611 {
6612 if (!strcmp(name, "i18n.commitencoding"))
6613 string_ncopy(opt_encoding, value, valuelen);
6615 else if (!strcmp(name, "core.editor"))
6616 string_ncopy(opt_editor, value, valuelen);
6618 else if (!strcmp(name, "core.worktree"))
6619 set_work_tree(value);
6621 else if (!prefixcmp(name, "tig.color."))
6622 set_repo_config_option(name + 10, value, option_color_command);
6624 else if (!prefixcmp(name, "tig.bind."))
6625 set_repo_config_option(name + 9, value, option_bind_command);
6627 else if (!prefixcmp(name, "tig."))
6628 set_repo_config_option(name + 4, value, option_set_command);
6630 else if (*opt_head && !prefixcmp(name, "branch.") &&
6631 !strncmp(name + 7, opt_head, strlen(opt_head)))
6632 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6634 return OK;
6635 }
6637 static int
6638 load_git_config(void)
6639 {
6640 const char *config_list_argv[] = { "git", "config", "--list", NULL };
6642 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
6643 }
6645 static int
6646 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6647 {
6648 if (!opt_git_dir[0]) {
6649 string_ncopy(opt_git_dir, name, namelen);
6651 } else if (opt_is_inside_work_tree == -1) {
6652 /* This can be 3 different values depending on the
6653 * version of git being used. If git-rev-parse does not
6654 * understand --is-inside-work-tree it will simply echo
6655 * the option else either "true" or "false" is printed.
6656 * Default to true for the unknown case. */
6657 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6659 } else if (*name == '.') {
6660 string_ncopy(opt_cdup, name, namelen);
6662 } else {
6663 string_ncopy(opt_prefix, name, namelen);
6664 }
6666 return OK;
6667 }
6669 static int
6670 load_repo_info(void)
6671 {
6672 const char *rev_parse_argv[] = {
6673 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6674 "--show-cdup", "--show-prefix", NULL
6675 };
6677 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
6678 }
6681 /*
6682 * Main
6683 */
6685 static const char usage[] =
6686 "tig " TIG_VERSION " (" __DATE__ ")\n"
6687 "\n"
6688 "Usage: tig [options] [revs] [--] [paths]\n"
6689 " or: tig show [options] [revs] [--] [paths]\n"
6690 " or: tig blame [options] [rev] [--] path\n"
6691 " or: tig status\n"
6692 " or: tig < [git command output]\n"
6693 "\n"
6694 "Options:\n"
6695 " -v, --version Show version and exit\n"
6696 " -h, --help Show help message and exit";
6698 static void __NORETURN
6699 quit(int sig)
6700 {
6701 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6702 if (cursed)
6703 endwin();
6704 exit(0);
6705 }
6707 static void __NORETURN
6708 die(const char *err, ...)
6709 {
6710 va_list args;
6712 endwin();
6714 va_start(args, err);
6715 fputs("tig: ", stderr);
6716 vfprintf(stderr, err, args);
6717 fputs("\n", stderr);
6718 va_end(args);
6720 exit(1);
6721 }
6723 static void
6724 warn(const char *msg, ...)
6725 {
6726 va_list args;
6728 va_start(args, msg);
6729 fputs("tig warning: ", stderr);
6730 vfprintf(stderr, msg, args);
6731 fputs("\n", stderr);
6732 va_end(args);
6733 }
6735 static int
6736 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
6737 {
6738 const char ***filter_args = data;
6740 return argv_append(filter_args, name) ? OK : ERR;
6741 }
6743 static void
6744 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
6745 {
6746 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
6747 const char **all_argv = NULL;
6749 if (!argv_append_array(&all_argv, rev_parse_argv) ||
6750 !argv_append_array(&all_argv, argv) ||
6751 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
6752 die("Failed to split arguments");
6753 argv_free(all_argv);
6754 free(all_argv);
6755 }
6757 static void
6758 filter_options(const char *argv[])
6759 {
6760 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
6761 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
6762 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
6763 }
6765 static enum request
6766 parse_options(int argc, const char *argv[])
6767 {
6768 enum request request = REQ_VIEW_MAIN;
6769 const char *subcommand;
6770 bool seen_dashdash = FALSE;
6771 const char **filter_argv = NULL;
6772 int i;
6774 if (!isatty(STDIN_FILENO))
6775 return REQ_VIEW_PAGER;
6777 if (argc <= 1)
6778 return REQ_VIEW_MAIN;
6780 subcommand = argv[1];
6781 if (!strcmp(subcommand, "status")) {
6782 if (argc > 2)
6783 warn("ignoring arguments after `%s'", subcommand);
6784 return REQ_VIEW_STATUS;
6786 } else if (!strcmp(subcommand, "blame")) {
6787 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv + 2);
6788 filter_rev_parse(&opt_blame_argv, "--no-revs", "--flags", argv + 2);
6789 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv + 2);
6791 if (!opt_file_argv || opt_file_argv[1] || (opt_rev_argv && opt_rev_argv[1]))
6792 die("invalid number of options to blame\n\n%s", usage);
6794 if (opt_rev_argv) {
6795 string_ncopy(opt_ref, opt_rev_argv[0], strlen(opt_rev_argv[0]));
6796 }
6798 string_ncopy(opt_file, opt_file_argv[0], strlen(opt_file_argv[0]));
6799 return REQ_VIEW_BLAME;
6801 } else if (!strcmp(subcommand, "show")) {
6802 request = REQ_VIEW_DIFF;
6804 } else {
6805 subcommand = NULL;
6806 }
6808 for (i = 1 + !!subcommand; i < argc; i++) {
6809 const char *opt = argv[i];
6811 if (seen_dashdash) {
6812 argv_append(&opt_file_argv, opt);
6813 continue;
6815 } else if (!strcmp(opt, "--")) {
6816 seen_dashdash = TRUE;
6817 continue;
6819 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6820 printf("tig version %s\n", TIG_VERSION);
6821 quit(0);
6823 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6824 printf("%s\n", usage);
6825 quit(0);
6827 } else if (!strcmp(opt, "--all")) {
6828 argv_append(&opt_rev_argv, opt);
6829 continue;
6830 }
6832 if (!argv_append(&filter_argv, opt))
6833 die("command too long");
6834 }
6836 if (filter_argv)
6837 filter_options(filter_argv);
6839 return request;
6840 }
6842 int
6843 main(int argc, const char *argv[])
6844 {
6845 const char *codeset = "UTF-8";
6846 enum request request = parse_options(argc, argv);
6847 struct view *view;
6849 signal(SIGINT, quit);
6850 signal(SIGPIPE, SIG_IGN);
6852 if (setlocale(LC_ALL, "")) {
6853 codeset = nl_langinfo(CODESET);
6854 }
6856 if (load_repo_info() == ERR)
6857 die("Failed to load repo info.");
6859 if (load_options() == ERR)
6860 die("Failed to load user config.");
6862 if (load_git_config() == ERR)
6863 die("Failed to load repo config.");
6865 /* Require a git repository unless when running in pager mode. */
6866 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6867 die("Not a git repository");
6869 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
6870 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
6871 if (opt_iconv_in == ICONV_NONE)
6872 die("Failed to initialize character set conversion");
6873 }
6875 if (codeset && strcmp(codeset, "UTF-8")) {
6876 opt_iconv_out = iconv_open(codeset, "UTF-8");
6877 if (opt_iconv_out == ICONV_NONE)
6878 die("Failed to initialize character set conversion");
6879 }
6881 if (load_refs() == ERR)
6882 die("Failed to load refs.");
6884 init_display();
6886 while (view_driver(display[current_view], request)) {
6887 int key = get_input(0);
6889 view = display[current_view];
6890 request = get_keybinding(view->keymap, key);
6892 /* Some low-level request handling. This keeps access to
6893 * status_win restricted. */
6894 switch (request) {
6895 case REQ_NONE:
6896 report("Unknown key, press %s for help",
6897 get_key(view->keymap, REQ_VIEW_HELP));
6898 break;
6899 case REQ_PROMPT:
6900 {
6901 char *cmd = read_prompt(":");
6903 if (cmd && isdigit(*cmd)) {
6904 int lineno = view->lineno + 1;
6906 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
6907 select_view_line(view, lineno - 1);
6908 report("");
6909 } else {
6910 report("Unable to parse '%s' as a line number", cmd);
6911 }
6913 } else if (cmd) {
6914 struct view *next = VIEW(REQ_VIEW_PAGER);
6915 const char *argv[SIZEOF_ARG] = { "git" };
6916 int argc = 1;
6918 /* When running random commands, initially show the
6919 * command in the title. However, it maybe later be
6920 * overwritten if a commit line is selected. */
6921 string_ncopy(next->ref, cmd, strlen(cmd));
6923 if (!argv_from_string(argv, &argc, cmd)) {
6924 report("Too many arguments");
6925 } else {
6926 open_argv(view, next, argv, NULL, OPEN_DEFAULT);
6927 }
6928 }
6930 request = REQ_NONE;
6931 break;
6932 }
6933 case REQ_SEARCH:
6934 case REQ_SEARCH_BACK:
6935 {
6936 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6937 char *search = read_prompt(prompt);
6939 if (search)
6940 string_ncopy(opt_search, search, strlen(search));
6941 else if (*opt_search)
6942 request = request == REQ_SEARCH ?
6943 REQ_FIND_NEXT :
6944 REQ_FIND_PREV;
6945 else
6946 request = REQ_NONE;
6947 break;
6948 }
6949 default:
6950 break;
6951 }
6952 }
6954 quit(0);
6956 return 0;
6957 }