Commit | Line | Data |
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b801d8b2 JF |
1 | /** |
2 | * TIG(1) | |
3 | * ====== | |
4 | * | |
5 | * NAME | |
6 | * ---- | |
7 | * tig - text-mode interface for git | |
8 | * | |
9 | * SYNOPSIS | |
10 | * -------- | |
11 | * [verse] | |
b76c2afc JF |
12 | * tig [options] |
13 | * tig [options] log [git log options] | |
14 | * tig [options] diff [git diff options] | |
15 | * tig [options] < [git log or git diff output] | |
b801d8b2 JF |
16 | * |
17 | * DESCRIPTION | |
18 | * ----------- | |
19 | * Browse changes in a git repository. | |
b801d8b2 JF |
20 | **/ |
21 | ||
22 | #define DEBUG | |
b801d8b2 JF |
23 | #ifndef DEBUG |
24 | #define NDEBUG | |
25 | #endif | |
26 | ||
b76c2afc JF |
27 | #ifndef VERSION |
28 | #define VERSION "tig-0.1" | |
29 | #endif | |
30 | ||
22f66b0a JF |
31 | #include <assert.h> |
32 | #include <ctype.h> | |
33 | #include <signal.h> | |
b801d8b2 | 34 | #include <stdarg.h> |
b801d8b2 | 35 | #include <stdio.h> |
22f66b0a | 36 | #include <stdlib.h> |
b801d8b2 | 37 | #include <string.h> |
b76c2afc | 38 | #include <time.h> |
b801d8b2 JF |
39 | |
40 | #include <curses.h> | |
41 | #include <form.h> | |
42 | ||
43 | static void die(const char *err, ...); | |
44 | static void report(const char *msg, ...); | |
45 | ||
46 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) | |
47 | ||
b801d8b2 | 48 | #define KEY_TAB 9 |
fd85fef1 JF |
49 | #define KEY_ESC 27 |
50 | #define KEY_DEL 127 | |
b801d8b2 JF |
51 | |
52 | #define REQ_OFFSET (MAX_COMMAND + 1) | |
53 | ||
54 | /* Requests for switching between the different views. */ | |
55 | #define REQ_DIFF (REQ_OFFSET + 0) | |
56 | #define REQ_LOG (REQ_OFFSET + 1) | |
57 | #define REQ_MAIN (REQ_OFFSET + 2) | |
22f66b0a | 58 | #define REQ_VIEWS (REQ_OFFSET + 3) |
b801d8b2 JF |
59 | |
60 | #define REQ_QUIT (REQ_OFFSET + 11) | |
61 | #define REQ_VERSION (REQ_OFFSET + 12) | |
62 | #define REQ_STOP (REQ_OFFSET + 13) | |
63 | #define REQ_UPDATE (REQ_OFFSET + 14) | |
64 | #define REQ_REDRAW (REQ_OFFSET + 15) | |
fd85fef1 JF |
65 | #define REQ_FIRST_LINE (REQ_OFFSET + 16) |
66 | #define REQ_LAST_LINE (REQ_OFFSET + 17) | |
b76c2afc JF |
67 | #define REQ_LINE_NUMBER (REQ_OFFSET + 18) |
68 | ||
69 | #define SIZEOF_VIEWS (REQ_VIEWS - REQ_OFFSET) | |
70 | #define SIZEOF_ID 1024 | |
b801d8b2 | 71 | |
78c70acd JF |
72 | #define COLOR_TRANSP (-1) |
73 | ||
74 | ||
b76c2afc JF |
75 | /** |
76 | * OPTIONS | |
77 | * ------- | |
78 | **/ | |
79 | ||
80 | static int opt_line_number; | |
81 | static int opt_request = REQ_MAIN; | |
82 | ||
83 | char head_id[SIZEOF_ID] = "HEAD"; | |
84 | char commit_id[SIZEOF_ID] = "HEAD"; | |
85 | ||
86 | ||
87 | /* Returns the index of log or diff command or -1 to exit. */ | |
88 | static int | |
89 | parse_options(int argc, char *argv[]) | |
90 | { | |
91 | int i; | |
92 | ||
93 | for (i = 1; i < argc; i++) { | |
94 | char *opt = argv[i]; | |
95 | ||
96 | /** | |
97 | * log [options]:: | |
98 | * git log options. | |
99 | **/ | |
100 | if (!strcmp(opt, "log")) { | |
101 | opt_request = REQ_LOG; | |
102 | return i; | |
103 | ||
104 | /** | |
105 | * diff [options]:: | |
106 | * git diff options. | |
107 | **/ | |
108 | } else if (!strcmp(opt, "diff")) { | |
109 | opt_request = REQ_DIFF; | |
110 | return i; | |
111 | ||
112 | /** | |
113 | * -l:: | |
114 | * Start up in log view. | |
115 | **/ | |
116 | } else if (!strcmp(opt, "-l")) { | |
117 | opt_request = REQ_LOG; | |
118 | ||
119 | /** | |
120 | * -d:: | |
121 | * Start up in diff view. | |
122 | **/ | |
123 | } else if (!strcmp(opt, "-d")) { | |
124 | opt_request = REQ_DIFF; | |
125 | ||
126 | /** | |
127 | * -n, --line-number:: | |
128 | * Prefix line numbers in log and diff view. | |
129 | **/ | |
130 | } else if (!strcmp(opt, "-n") || | |
131 | !strcmp(opt, "--line-number")) { | |
132 | opt_line_number = 1; | |
133 | ||
134 | /** | |
135 | * -v, --version:: | |
136 | * Show version and exit. | |
137 | **/ | |
138 | } else if (!strcmp(opt, "-v") || | |
139 | !strcmp(opt, "--version")) { | |
140 | printf("tig version %s\n", VERSION); | |
141 | return -1; | |
142 | ||
143 | /** | |
144 | * ref:: | |
145 | * Commit reference, symbolic or raw SHA1 ID. | |
146 | **/ | |
147 | } else if (opt[0] && opt[0] != '-') { | |
148 | strncpy(head_id, opt, SIZEOF_ID); | |
149 | strncpy(commit_id, opt, SIZEOF_ID); | |
150 | ||
151 | } else { | |
152 | die("Unknown command: '%s'", opt); | |
153 | } | |
154 | } | |
155 | ||
156 | return i; | |
157 | } | |
158 | ||
159 | ||
160 | /* | |
161 | * Line-oriented content detection. | |
162 | */ | |
163 | ||
78c70acd | 164 | enum line_type { |
b76c2afc | 165 | LINE_DEFAULT, |
78c70acd | 166 | LINE_AUTHOR, |
b76c2afc | 167 | LINE_AUTHOR_IDENT, |
78c70acd | 168 | LINE_COMMIT, |
b76c2afc JF |
169 | LINE_COMMITTER, |
170 | LINE_CURSOR, | |
78c70acd JF |
171 | LINE_DATE, |
172 | LINE_DIFF, | |
173 | LINE_DIFF_ADD, | |
78c70acd | 174 | LINE_DIFF_CHUNK, |
b76c2afc JF |
175 | LINE_DIFF_COPY, |
176 | LINE_DIFF_DEL, | |
177 | LINE_DIFF_DISSIM, | |
178 | LINE_DIFF_NEWMODE, | |
179 | LINE_DIFF_OLDMODE, | |
180 | LINE_DIFF_RENAME, | |
181 | LINE_DIFF_SIM, | |
78c70acd JF |
182 | LINE_DIFF_TREE, |
183 | LINE_INDEX, | |
b76c2afc JF |
184 | LINE_MAIN_AUTHOR, |
185 | LINE_MAIN_COMMIT, | |
186 | LINE_MAIN_DATE, | |
187 | LINE_MAIN_DELIM, | |
188 | LINE_MERGE, | |
78c70acd | 189 | LINE_PARENT, |
78c70acd JF |
190 | LINE_STATUS, |
191 | LINE_TITLE, | |
b76c2afc | 192 | LINE_TREE, |
78c70acd JF |
193 | }; |
194 | ||
195 | struct line_info { | |
196 | enum line_type type; | |
197 | char *line; | |
198 | int linelen; | |
199 | ||
200 | int fg; | |
201 | int bg; | |
202 | int attr; | |
203 | }; | |
204 | ||
205 | #define LINE(type, line, fg, bg, attr) \ | |
206 | { LINE_##type, (line), sizeof(line) - 1, (fg), (bg), (attr) } | |
207 | ||
208 | static struct line_info line_info[] = { | |
b76c2afc JF |
209 | /* Diff markup */ |
210 | LINE(DIFF, "diff --git ", COLOR_YELLOW, COLOR_TRANSP, 0), | |
211 | LINE(INDEX, "index ", COLOR_BLUE, COLOR_TRANSP, 0), | |
212 | LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_TRANSP, 0), | |
213 | LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_TRANSP, 0), | |
214 | LINE(DIFF_DEL, "-", COLOR_RED, COLOR_TRANSP, 0), | |
215 | LINE(DIFF_OLDMODE, "old mode ", COLOR_YELLOW, COLOR_TRANSP, 0), | |
216 | LINE(DIFF_NEWMODE, "new mode ", COLOR_YELLOW, COLOR_TRANSP, 0), | |
217 | LINE(DIFF_COPY, "copy ", COLOR_YELLOW, COLOR_TRANSP, 0), | |
218 | LINE(DIFF_RENAME, "rename ", COLOR_YELLOW, COLOR_TRANSP, 0), | |
219 | LINE(DIFF_SIM, "similarity ", COLOR_YELLOW, COLOR_TRANSP, 0), | |
220 | LINE(DIFF_DISSIM, "dissimilarity ", COLOR_YELLOW, COLOR_TRANSP, 0), | |
221 | ||
222 | /* Pretty print commit header */ | |
223 | LINE(AUTHOR, "Author: ", COLOR_CYAN, COLOR_TRANSP, 0), | |
224 | LINE(MERGE, "Merge: ", COLOR_BLUE, COLOR_TRANSP, 0), | |
225 | LINE(DATE, "Date: ", COLOR_YELLOW, COLOR_TRANSP, 0), | |
226 | ||
227 | /* Raw commit header */ | |
228 | LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_TRANSP, 0), | |
229 | LINE(PARENT, "parent ", COLOR_BLUE, COLOR_TRANSP, 0), | |
230 | LINE(TREE, "tree ", COLOR_BLUE, COLOR_TRANSP, 0), | |
231 | LINE(AUTHOR_IDENT, "author ", COLOR_CYAN, COLOR_TRANSP, 0), | |
232 | LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_TRANSP, 0), | |
233 | ||
234 | LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_TRANSP, 0), | |
235 | ||
236 | /* UI colors */ | |
237 | LINE(DEFAULT, "", COLOR_TRANSP, COLOR_TRANSP, A_NORMAL), | |
238 | LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), | |
239 | LINE(STATUS, "", COLOR_GREEN, COLOR_TRANSP, 0), | |
240 | LINE(TITLE, "", COLOR_YELLOW, COLOR_BLUE, A_BOLD), | |
241 | LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_TRANSP, 0), | |
242 | LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_TRANSP, 0), | |
243 | LINE(MAIN_COMMIT, "", COLOR_TRANSP, COLOR_TRANSP, 0), | |
244 | LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_TRANSP, 0), | |
78c70acd JF |
245 | }; |
246 | ||
247 | static struct line_info * | |
248 | get_line_info(char *line) | |
249 | { | |
250 | int linelen = strlen(line); | |
251 | int i; | |
252 | ||
253 | for (i = 0; i < ARRAY_SIZE(line_info); i++) { | |
254 | if (linelen < line_info[i].linelen | |
255 | || strncmp(line_info[i].line, line, line_info[i].linelen)) | |
256 | continue; | |
257 | ||
258 | return &line_info[i]; | |
259 | } | |
260 | ||
261 | return NULL; | |
262 | } | |
263 | ||
264 | static enum line_type | |
265 | get_line_type(char *line) | |
266 | { | |
267 | struct line_info *info = get_line_info(line); | |
268 | ||
b76c2afc | 269 | return info ? info->type : LINE_DEFAULT; |
78c70acd JF |
270 | } |
271 | ||
272 | static int | |
273 | get_line_attr(enum line_type type) | |
274 | { | |
275 | int i; | |
276 | ||
277 | for (i = 0; i < ARRAY_SIZE(line_info); i++) | |
278 | if (line_info[i].type == type) | |
279 | return COLOR_PAIR(line_info[i].type) | line_info[i].attr; | |
280 | ||
281 | return A_NORMAL; | |
282 | } | |
283 | ||
284 | static void | |
285 | init_colors(void) | |
286 | { | |
287 | int transparent_bg = COLOR_BLACK; | |
288 | int transparent_fg = COLOR_WHITE; | |
289 | int i; | |
290 | ||
291 | start_color(); | |
292 | ||
293 | if (use_default_colors() != ERR) { | |
294 | transparent_bg = -1; | |
295 | transparent_fg = -1; | |
296 | } | |
297 | ||
298 | for (i = 0; i < ARRAY_SIZE(line_info); i++) { | |
299 | struct line_info *info = &line_info[i]; | |
300 | int bg = info->bg == COLOR_TRANSP ? transparent_bg : info->bg; | |
301 | int fg = info->fg == COLOR_TRANSP ? transparent_fg : info->fg; | |
302 | ||
303 | init_pair(info->type, fg, bg); | |
304 | } | |
305 | } | |
306 | ||
307 | ||
b801d8b2 JF |
308 | /** |
309 | * KEYS | |
310 | * ---- | |
311 | * | |
312 | * d:: | |
313 | * diff | |
314 | * l:: | |
315 | * log | |
316 | * q:: | |
317 | * quit | |
318 | * r:: | |
319 | * redraw screen | |
320 | * s:: | |
321 | * stop all background loading | |
322 | * j:: | |
323 | * down | |
324 | * k:: | |
325 | * up | |
326 | * h, ?:: | |
327 | * help | |
328 | * v:: | |
329 | * version | |
330 | * | |
331 | **/ | |
332 | ||
333 | #define HELP "(d)iff, (l)og, (m)ain, (q)uit, (v)ersion, (h)elp" | |
334 | ||
335 | struct keymap { | |
336 | int alias; | |
337 | int request; | |
338 | }; | |
339 | ||
340 | struct keymap keymap[] = { | |
fd85fef1 | 341 | /* Cursor navigation */ |
b801d8b2 JF |
342 | { KEY_UP, REQ_PREV_LINE }, |
343 | { 'k', REQ_PREV_LINE }, | |
344 | { KEY_DOWN, REQ_NEXT_LINE }, | |
345 | { 'j', REQ_NEXT_LINE }, | |
fd85fef1 JF |
346 | { KEY_HOME, REQ_FIRST_LINE }, |
347 | { KEY_END, REQ_LAST_LINE }, | |
78c70acd JF |
348 | { KEY_NPAGE, REQ_NEXT_PAGE }, |
349 | { KEY_PPAGE, REQ_PREV_PAGE }, | |
fd85fef1 JF |
350 | |
351 | /* Scrolling */ | |
352 | { KEY_IC, REQ_SCR_BLINE }, /* scroll field backward a line */ | |
353 | { KEY_DC, REQ_SCR_FLINE }, /* scroll field forward a line */ | |
78c70acd JF |
354 | { 's', REQ_SCR_FPAGE }, /* scroll field forward a page */ |
355 | { 'w', REQ_SCR_BPAGE }, /* scroll field backward a page */ | |
b801d8b2 JF |
356 | |
357 | { 'd', REQ_DIFF }, | |
358 | { 'l', REQ_LOG }, | |
359 | { 'm', REQ_MAIN }, | |
360 | ||
b76c2afc JF |
361 | { 'n', REQ_LINE_NUMBER }, |
362 | ||
b801d8b2 JF |
363 | /* No input from wgetch() with nodelay() enabled. */ |
364 | { ERR, REQ_UPDATE }, | |
365 | ||
366 | { KEY_ESC, REQ_QUIT }, | |
367 | { 'q', REQ_QUIT }, | |
368 | { 's', REQ_STOP }, | |
369 | { 'v', REQ_VERSION }, | |
370 | { 'r', REQ_REDRAW }, | |
371 | }; | |
372 | ||
373 | static int | |
374 | get_request(int request) | |
375 | { | |
376 | int i; | |
377 | ||
378 | for (i = 0; i < ARRAY_SIZE(keymap); i++) | |
379 | if (keymap[i].alias == request) | |
380 | return keymap[i].request; | |
381 | ||
382 | return request; | |
383 | } | |
384 | ||
385 | ||
386 | /* | |
387 | * Viewer | |
388 | */ | |
389 | ||
390 | struct view { | |
391 | char *name; | |
392 | char *cmd; | |
fd85fef1 | 393 | char *id; |
b801d8b2 | 394 | |
22f66b0a | 395 | |
b801d8b2 | 396 | /* Rendering */ |
22f66b0a JF |
397 | int (*read)(struct view *, char *); |
398 | int (*draw)(struct view *, unsigned int); | |
399 | size_t objsize; /* Size of objects in the line index */ | |
400 | ||
b801d8b2 | 401 | WINDOW *win; |
fd85fef1 | 402 | int height, width; |
b801d8b2 JF |
403 | |
404 | /* Navigation */ | |
405 | unsigned long offset; /* Offset of the window top */ | |
406 | unsigned long lineno; /* Current line number */ | |
407 | ||
408 | /* Buffering */ | |
409 | unsigned long lines; /* Total number of lines */ | |
22f66b0a | 410 | void **line; /* Line index */ |
b801d8b2 JF |
411 | |
412 | /* Loading */ | |
413 | FILE *pipe; | |
414 | }; | |
415 | ||
22f66b0a JF |
416 | struct commit { |
417 | char id[41]; | |
418 | char title[75]; | |
b76c2afc JF |
419 | char author[75]; |
420 | struct tm time; | |
22f66b0a JF |
421 | }; |
422 | ||
423 | static int pager_draw(struct view *view, unsigned int lineno); | |
424 | static int pager_read(struct view *view, char *line); | |
425 | ||
426 | static int main_draw(struct view *view, unsigned int lineno); | |
427 | static int main_read(struct view *view, char *line); | |
b801d8b2 | 428 | |
fd85fef1 | 429 | #define DIFF_CMD \ |
b801d8b2 JF |
430 | "git log --stat -n1 %s ; echo; " \ |
431 | "git diff --find-copies-harder -B -C %s^ %s" | |
432 | ||
433 | #define LOG_CMD \ | |
434 | "git log --stat -n100 %s" | |
435 | ||
fd85fef1 JF |
436 | #define MAIN_CMD \ |
437 | "git log --stat --pretty=raw %s" | |
438 | ||
b801d8b2 JF |
439 | /* The status window at the bottom. Used for polling keystrokes. */ |
440 | static WINDOW *status_win; | |
441 | ||
78c70acd JF |
442 | static WINDOW *title_win; |
443 | ||
fd85fef1 JF |
444 | static unsigned int current_view; |
445 | static unsigned int nloading; | |
446 | ||
22f66b0a JF |
447 | static struct view views[]; |
448 | static struct view *display[]; | |
449 | ||
b801d8b2 | 450 | static struct view views[] = { |
22f66b0a | 451 | { "diff", DIFF_CMD, commit_id, pager_read, pager_draw, sizeof(char) }, |
78c70acd JF |
452 | { "log", LOG_CMD, head_id, pager_read, pager_draw, sizeof(char) }, |
453 | { "main", MAIN_CMD, head_id, main_read, main_draw, sizeof(struct commit) }, | |
b801d8b2 JF |
454 | }; |
455 | ||
456 | static struct view *display[ARRAY_SIZE(views)]; | |
b801d8b2 | 457 | |
22f66b0a | 458 | |
b801d8b2 JF |
459 | #define foreach_view(view, i) \ |
460 | for (i = 0; i < sizeof(display) && (view = display[i]); i++) | |
461 | ||
462 | static void | |
463 | redraw_view(struct view *view) | |
464 | { | |
465 | int lineno; | |
b801d8b2 JF |
466 | |
467 | wclear(view->win); | |
468 | wmove(view->win, 0, 0); | |
469 | ||
fd85fef1 | 470 | for (lineno = 0; lineno < view->height; lineno++) { |
22f66b0a | 471 | if (!view->draw(view, lineno)) |
fd85fef1 | 472 | break; |
b801d8b2 JF |
473 | } |
474 | ||
475 | redrawwin(view->win); | |
476 | wrefresh(view->win); | |
477 | } | |
478 | ||
b76c2afc JF |
479 | static void |
480 | resize_view(struct view *view) | |
481 | { | |
482 | int lines, cols; | |
483 | ||
484 | getmaxyx(stdscr, lines, cols); | |
485 | ||
486 | if (view->win) { | |
487 | mvwin(view->win, 0, 0); | |
488 | wresize(view->win, lines - 2, cols); | |
489 | ||
490 | } else { | |
491 | view->win = newwin(lines - 2, 0, 0, 0); | |
492 | if (!view->win) { | |
493 | report("failed to create %s view", view->name); | |
494 | return; | |
495 | } | |
496 | scrollok(view->win, TRUE); | |
497 | } | |
498 | ||
499 | getmaxyx(view->win, view->height, view->width); | |
500 | } | |
501 | ||
b801d8b2 JF |
502 | /* FIXME: Fix percentage. */ |
503 | static void | |
504 | report_position(struct view *view, int all) | |
505 | { | |
506 | report(all ? "line %d of %d (%d%%) viewing from %d" | |
507 | : "line %d of %d", | |
508 | view->lineno + 1, | |
509 | view->lines, | |
510 | view->lines ? view->offset * 100 / view->lines : 0, | |
511 | view->offset); | |
512 | } | |
513 | ||
78c70acd | 514 | |
b801d8b2 | 515 | static void |
fd85fef1 | 516 | move_view(struct view *view, int lines) |
b801d8b2 | 517 | { |
fd85fef1 JF |
518 | /* The rendering expects the new offset. */ |
519 | view->offset += lines; | |
520 | ||
521 | assert(0 <= view->offset && view->offset < view->lines); | |
522 | assert(lines); | |
b801d8b2 | 523 | |
b76c2afc JF |
524 | if (view->height < (lines > 0 ? lines : -lines)) { |
525 | redraw_view(view); | |
526 | ||
527 | } else { | |
22f66b0a JF |
528 | int line = lines > 0 ? view->height - lines : 0; |
529 | int end = line + (lines > 0 ? lines : -lines); | |
fd85fef1 JF |
530 | |
531 | wscrl(view->win, lines); | |
532 | ||
22f66b0a JF |
533 | for (; line < end; line++) { |
534 | if (!view->draw(view, line)) | |
fd85fef1 JF |
535 | break; |
536 | } | |
537 | } | |
538 | ||
539 | /* Move current line into the view. */ | |
540 | if (view->lineno < view->offset) { | |
541 | view->lineno = view->offset; | |
22f66b0a | 542 | view->draw(view, 0); |
fd85fef1 JF |
543 | |
544 | } else if (view->lineno >= view->offset + view->height) { | |
545 | view->lineno = view->offset + view->height - 1; | |
22f66b0a | 546 | view->draw(view, view->lineno - view->offset); |
fd85fef1 JF |
547 | } |
548 | ||
549 | assert(view->offset <= view->lineno && view->lineno <= view->lines); | |
550 | ||
551 | redrawwin(view->win); | |
552 | wrefresh(view->win); | |
553 | ||
554 | report_position(view, lines); | |
555 | } | |
78c70acd | 556 | |
fd85fef1 JF |
557 | static void |
558 | scroll_view(struct view *view, int request) | |
559 | { | |
560 | int lines = 1; | |
b801d8b2 JF |
561 | |
562 | switch (request) { | |
fd85fef1 JF |
563 | case REQ_SCR_FPAGE: |
564 | lines = view->height; | |
565 | case REQ_SCR_FLINE: | |
b801d8b2 | 566 | if (view->offset + lines > view->lines) |
bde3653a | 567 | lines = view->lines - view->offset; |
b801d8b2 | 568 | |
fd85fef1 | 569 | if (lines == 0 || view->offset + view->height >= view->lines) { |
b801d8b2 JF |
570 | report("already at last line"); |
571 | return; | |
572 | } | |
573 | break; | |
574 | ||
fd85fef1 JF |
575 | case REQ_SCR_BPAGE: |
576 | lines = view->height; | |
577 | case REQ_SCR_BLINE: | |
b801d8b2 JF |
578 | if (lines > view->offset) |
579 | lines = view->offset; | |
580 | ||
581 | if (lines == 0) { | |
582 | report("already at first line"); | |
583 | return; | |
584 | } | |
585 | ||
fd85fef1 | 586 | lines = -lines; |
b801d8b2 | 587 | break; |
b801d8b2 JF |
588 | } |
589 | ||
fd85fef1 JF |
590 | move_view(view, lines); |
591 | } | |
b801d8b2 | 592 | |
fd85fef1 JF |
593 | static void |
594 | navigate_view(struct view *view, int request) | |
595 | { | |
596 | int steps; | |
b801d8b2 | 597 | |
fd85fef1 | 598 | switch (request) { |
78c70acd JF |
599 | case REQ_FIRST_LINE: |
600 | steps = -view->lineno; | |
601 | break; | |
602 | ||
603 | case REQ_LAST_LINE: | |
604 | steps = view->lines - view->lineno - 1; | |
605 | break; | |
606 | ||
607 | case REQ_PREV_PAGE: | |
608 | steps = view->height > view->lineno | |
609 | ? -view->lineno : -view->height; | |
610 | break; | |
611 | ||
612 | case REQ_NEXT_PAGE: | |
613 | steps = view->lineno + view->height >= view->lines | |
614 | ? view->lines - view->lineno - 1 : view->height; | |
615 | break; | |
616 | ||
fd85fef1 | 617 | case REQ_PREV_LINE: |
fd85fef1 JF |
618 | steps = -1; |
619 | break; | |
b801d8b2 | 620 | |
fd85fef1 | 621 | case REQ_NEXT_LINE: |
fd85fef1 JF |
622 | steps = 1; |
623 | break; | |
78c70acd | 624 | } |
b801d8b2 | 625 | |
78c70acd JF |
626 | if (steps < 0 && view->lineno == 0) { |
627 | report("already at first line"); | |
628 | return; | |
b801d8b2 | 629 | |
b76c2afc | 630 | } else if (steps > 0 && view->lineno + 1 == view->lines) { |
78c70acd JF |
631 | report("already at last line"); |
632 | return; | |
fd85fef1 JF |
633 | } |
634 | ||
635 | view->lineno += steps; | |
22f66b0a | 636 | view->draw(view, view->lineno - steps - view->offset); |
fd85fef1 JF |
637 | |
638 | if (view->lineno < view->offset || | |
639 | view->lineno >= view->offset + view->height) { | |
640 | if (steps < 0 && -steps > view->offset) { | |
641 | steps = -view->offset; | |
b76c2afc JF |
642 | |
643 | } else if (steps > 0) { | |
644 | if (view->lineno == view->lines - 1 && | |
645 | view->lines > view->height) { | |
646 | steps = view->lines - view->offset - 1; | |
647 | if (steps >= view->height) | |
648 | steps -= view->height - 1; | |
649 | } | |
b801d8b2 | 650 | } |
78c70acd | 651 | |
fd85fef1 JF |
652 | move_view(view, steps); |
653 | return; | |
b801d8b2 JF |
654 | } |
655 | ||
b76c2afc | 656 | /* Draw the cursor line */ |
22f66b0a | 657 | view->draw(view, view->lineno - view->offset); |
fd85fef1 | 658 | |
b801d8b2 JF |
659 | redrawwin(view->win); |
660 | wrefresh(view->win); | |
661 | ||
fd85fef1 | 662 | report_position(view, view->height); |
b801d8b2 JF |
663 | } |
664 | ||
b801d8b2 JF |
665 | |
666 | ||
667 | static bool | |
668 | begin_update(struct view *view) | |
669 | { | |
670 | char buf[1024]; | |
671 | ||
672 | if (view->cmd) { | |
fd85fef1 JF |
673 | char *id = view->id; |
674 | ||
675 | if (snprintf(buf, sizeof(buf), view->cmd, id, id, id) < sizeof(buf)) | |
b801d8b2 JF |
676 | view->pipe = popen(buf, "r"); |
677 | ||
678 | if (!view->pipe) | |
679 | return FALSE; | |
680 | ||
681 | if (nloading++ == 0) | |
682 | nodelay(status_win, TRUE); | |
683 | } | |
684 | ||
685 | display[current_view] = view; | |
686 | ||
687 | view->offset = 0; | |
688 | view->lines = 0; | |
689 | view->lineno = 0; | |
690 | ||
691 | return TRUE; | |
692 | } | |
693 | ||
694 | static void | |
695 | end_update(struct view *view) | |
696 | { | |
697 | wattrset(view->win, A_NORMAL); | |
698 | pclose(view->pipe); | |
699 | view->pipe = NULL; | |
700 | ||
701 | if (nloading-- == 1) | |
702 | nodelay(status_win, FALSE); | |
703 | } | |
704 | ||
705 | static int | |
706 | update_view(struct view *view) | |
707 | { | |
708 | char buffer[BUFSIZ]; | |
709 | char *line; | |
22f66b0a | 710 | void **tmp; |
b801d8b2 | 711 | int redraw; |
fd85fef1 | 712 | int lines = view->height; |
b801d8b2 JF |
713 | |
714 | if (!view->pipe) | |
715 | return TRUE; | |
716 | ||
fd85fef1 | 717 | /* Only redraw after the first reading session. */ |
22f66b0a JF |
718 | /* FIXME: ... and possibly more. */ |
719 | redraw = view->height > view->lines; | |
b801d8b2 JF |
720 | |
721 | tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines)); | |
722 | if (!tmp) | |
723 | goto alloc_error; | |
724 | ||
725 | view->line = tmp; | |
726 | ||
727 | while ((line = fgets(buffer, sizeof(buffer), view->pipe))) { | |
728 | int linelen; | |
729 | ||
b801d8b2 JF |
730 | linelen = strlen(line); |
731 | if (linelen) | |
732 | line[linelen - 1] = 0; | |
733 | ||
22f66b0a | 734 | if (!view->read(view, line)) |
b801d8b2 | 735 | goto alloc_error; |
fd85fef1 JF |
736 | |
737 | if (lines-- == 1) | |
738 | break; | |
b801d8b2 JF |
739 | } |
740 | ||
741 | if (redraw) | |
742 | redraw_view(view); | |
743 | ||
744 | if (ferror(view->pipe)) { | |
fd85fef1 | 745 | report("failed to read %s", view->cmd); |
b801d8b2 JF |
746 | goto end; |
747 | ||
748 | } else if (feof(view->pipe)) { | |
749 | report_position(view, 0); | |
750 | goto end; | |
751 | } | |
752 | ||
753 | return TRUE; | |
754 | ||
755 | alloc_error: | |
fd85fef1 | 756 | report("allocation failure"); |
b801d8b2 JF |
757 | |
758 | end: | |
759 | end_update(view); | |
760 | return FALSE; | |
761 | } | |
762 | ||
763 | ||
764 | static struct view * | |
765 | switch_view(struct view *prev, int request) | |
766 | { | |
767 | struct view *view = &views[request - REQ_OFFSET]; | |
768 | struct view *displayed; | |
769 | int i; | |
770 | ||
771 | if (view == prev) { | |
772 | foreach_view (displayed, i) ; | |
773 | ||
774 | if (i == 1) | |
fd85fef1 | 775 | report("already in %s view", view->name); |
b801d8b2 JF |
776 | else |
777 | report("FIXME: Maximize"); | |
778 | ||
779 | return view; | |
780 | ||
781 | } else { | |
782 | foreach_view (displayed, i) { | |
783 | if (view == displayed) { | |
784 | current_view = i; | |
fd85fef1 | 785 | report("new current view"); |
b801d8b2 JF |
786 | return view; |
787 | } | |
788 | } | |
789 | } | |
790 | ||
791 | if (!view->win) | |
792 | resize_view(view); | |
793 | ||
794 | /* Reload */ | |
795 | ||
796 | if (view->line) { | |
797 | for (i = 0; i < view->lines; i++) | |
798 | if (view->line[i]) | |
799 | free(view->line[i]); | |
800 | ||
801 | free(view->line); | |
802 | view->line = NULL; | |
803 | } | |
804 | ||
805 | if (prev && prev->pipe) | |
806 | end_update(prev); | |
807 | ||
808 | if (begin_update(view)) { | |
809 | if (!view->cmd) | |
810 | report("%s", HELP); | |
811 | else | |
812 | report("loading..."); | |
813 | } | |
814 | ||
815 | return view; | |
816 | } | |
817 | ||
818 | ||
819 | /* Process a keystroke */ | |
820 | static int | |
821 | view_driver(struct view *view, int key) | |
822 | { | |
823 | int request = get_request(key); | |
824 | int i; | |
825 | ||
826 | switch (request) { | |
827 | case REQ_NEXT_LINE: | |
b801d8b2 | 828 | case REQ_PREV_LINE: |
fd85fef1 JF |
829 | case REQ_FIRST_LINE: |
830 | case REQ_LAST_LINE: | |
78c70acd JF |
831 | case REQ_NEXT_PAGE: |
832 | case REQ_PREV_PAGE: | |
fd85fef1 JF |
833 | if (view) |
834 | navigate_view(view, request); | |
835 | break; | |
836 | ||
837 | case REQ_SCR_FLINE: | |
838 | case REQ_SCR_BLINE: | |
839 | case REQ_SCR_FPAGE: | |
840 | case REQ_SCR_BPAGE: | |
b801d8b2 JF |
841 | if (view) |
842 | scroll_view(view, request); | |
843 | break; | |
844 | ||
845 | case REQ_MAIN: | |
846 | case REQ_LOG: | |
847 | case REQ_DIFF: | |
848 | view = switch_view(view, request); | |
849 | break; | |
850 | ||
b76c2afc JF |
851 | case REQ_LINE_NUMBER: |
852 | opt_line_number = !opt_line_number; | |
853 | redraw_view(view); | |
854 | break; | |
855 | ||
b801d8b2 JF |
856 | case REQ_REDRAW: |
857 | redraw_view(view); | |
858 | break; | |
859 | ||
860 | case REQ_STOP: | |
861 | foreach_view (view, i) { | |
862 | if (view->pipe) { | |
863 | end_update(view); | |
864 | scroll_view(view, 0); | |
865 | } | |
866 | } | |
867 | break; | |
868 | ||
869 | case REQ_VERSION: | |
870 | report("version %s", VERSION); | |
871 | return TRUE; | |
872 | ||
873 | case REQ_UPDATE: | |
874 | doupdate(); | |
875 | return TRUE; | |
876 | ||
877 | case REQ_QUIT: | |
878 | return FALSE; | |
879 | ||
880 | default: | |
881 | report(HELP); | |
882 | return TRUE; | |
883 | } | |
884 | ||
885 | return TRUE; | |
886 | } | |
887 | ||
888 | ||
889 | /* | |
890 | * Rendering | |
891 | */ | |
892 | ||
b801d8b2 | 893 | static int |
22f66b0a | 894 | pager_draw(struct view *view, unsigned int lineno) |
b801d8b2 | 895 | { |
78c70acd | 896 | enum line_type type; |
b801d8b2 | 897 | char *line; |
78c70acd | 898 | int attr; |
b801d8b2 | 899 | |
fd85fef1 JF |
900 | if (view->offset + lineno >= view->lines) |
901 | return FALSE; | |
902 | ||
b801d8b2 | 903 | line = view->line[view->offset + lineno]; |
78c70acd | 904 | type = get_line_type(line); |
b801d8b2 | 905 | |
fd85fef1 | 906 | if (view->offset + lineno == view->lineno) { |
78c70acd | 907 | if (type == LINE_COMMIT) |
fd85fef1 | 908 | strncpy(commit_id, line + 7, SIZEOF_ID); |
78c70acd | 909 | type = LINE_CURSOR; |
fd85fef1 JF |
910 | } |
911 | ||
78c70acd | 912 | attr = get_line_attr(type); |
b801d8b2 | 913 | wattrset(view->win, attr); |
b76c2afc JF |
914 | |
915 | if (opt_line_number) { | |
916 | mvwprintw(view->win, lineno, 0, "%4d: ", view->offset + lineno + 1); | |
917 | while (line) { | |
918 | if (*line == '\t') { | |
919 | waddstr(view->win, " "); | |
920 | line++; | |
921 | } else { | |
922 | char *tab = strchr(line, '\t'); | |
923 | ||
924 | if (tab) | |
925 | waddnstr(view->win, line, tab - line); | |
926 | else | |
927 | waddstr(view->win, line); | |
928 | line = tab; | |
929 | } | |
930 | } | |
931 | waddstr(view->win, line); | |
932 | ||
933 | } else { | |
934 | /* No empty lines makes cursor drawing and clearing implicit. */ | |
935 | if (!*line) | |
936 | line = " "; | |
937 | mvwaddstr(view->win, lineno, 0, line); | |
938 | } | |
b801d8b2 JF |
939 | |
940 | return TRUE; | |
941 | } | |
942 | ||
22f66b0a JF |
943 | static int |
944 | pager_read(struct view *view, char *line) | |
945 | { | |
946 | view->line[view->lines] = strdup(line); | |
947 | if (!view->line[view->lines]) | |
948 | return FALSE; | |
949 | ||
950 | view->lines++; | |
951 | return TRUE; | |
952 | } | |
953 | ||
954 | static int | |
955 | main_draw(struct view *view, unsigned int lineno) | |
956 | { | |
b76c2afc | 957 | char buf[21]; |
22f66b0a | 958 | struct commit *commit; |
78c70acd | 959 | enum line_type type; |
b76c2afc JF |
960 | int cols = 0; |
961 | size_t timelen; | |
22f66b0a JF |
962 | |
963 | if (view->offset + lineno >= view->lines) | |
964 | return FALSE; | |
965 | ||
966 | commit = view->line[view->offset + lineno]; | |
967 | if (!commit) return FALSE; | |
968 | ||
22f66b0a JF |
969 | if (view->offset + lineno == view->lineno) { |
970 | strncpy(commit_id, commit->id, SIZEOF_ID); | |
78c70acd JF |
971 | type = LINE_CURSOR; |
972 | } else { | |
b76c2afc JF |
973 | type = LINE_MAIN_COMMIT; |
974 | } | |
975 | ||
976 | wmove(view->win, lineno, cols); | |
977 | wattrset(view->win, get_line_attr(LINE_MAIN_DATE)); | |
978 | ||
979 | timelen = strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S ", &commit->time); | |
980 | waddnstr(view->win, buf, timelen); | |
981 | ||
982 | cols += 20; | |
983 | wmove(view->win, lineno, cols); | |
984 | wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR)); | |
985 | ||
986 | if (strlen(commit->author) > 19) { | |
987 | waddnstr(view->win, commit->author, 18); | |
988 | wattrset(view->win, get_line_attr(LINE_MAIN_DELIM)); | |
989 | waddch(view->win, '~'); | |
990 | } else { | |
991 | waddstr(view->win, commit->author); | |
22f66b0a JF |
992 | } |
993 | ||
b76c2afc JF |
994 | cols += 20; |
995 | wattrset(view->win, A_NORMAL); | |
996 | mvwaddch(view->win, lineno, cols, ACS_LTEE); | |
78c70acd | 997 | wattrset(view->win, get_line_attr(type)); |
b76c2afc | 998 | mvwaddstr(view->win, lineno, cols + 2, commit->title); |
22f66b0a JF |
999 | wattrset(view->win, A_NORMAL); |
1000 | ||
1001 | return TRUE; | |
1002 | } | |
1003 | ||
1004 | static int | |
1005 | main_read(struct view *view, char *line) | |
1006 | { | |
78c70acd JF |
1007 | enum line_type type = get_line_type(line); |
1008 | struct commit *commit; | |
22f66b0a | 1009 | |
78c70acd JF |
1010 | switch (type) { |
1011 | case LINE_COMMIT: | |
22f66b0a JF |
1012 | commit = calloc(1, sizeof(struct commit)); |
1013 | if (!commit) | |
1014 | return FALSE; | |
1015 | ||
b76c2afc JF |
1016 | line += sizeof("commit ") - 1; |
1017 | ||
22f66b0a | 1018 | view->line[view->lines++] = commit; |
b76c2afc | 1019 | strncpy(commit->id, line, sizeof(commit->id)); |
78c70acd | 1020 | break; |
22f66b0a | 1021 | |
b76c2afc JF |
1022 | case LINE_AUTHOR_IDENT: |
1023 | { | |
1024 | char *ident = line + sizeof("author ") - 1; | |
1025 | char *end = strchr(ident, '<'); | |
1026 | ||
1027 | if (end) { | |
1028 | for (; end > ident && isspace(end[-1]); end--) ; | |
1029 | *end = 0; | |
1030 | } | |
1031 | ||
1032 | commit = view->line[view->lines - 1]; | |
1033 | strncpy(commit->author, ident, sizeof(commit->author)); | |
1034 | ||
1035 | if (end) { | |
1036 | char *secs = strchr(end + 1, '>'); | |
1037 | char *zone; | |
1038 | time_t time; | |
1039 | ||
1040 | if (!secs || secs[1] != ' ') | |
1041 | break; | |
1042 | ||
1043 | secs += 2; | |
1044 | time = (time_t) atol(secs); | |
1045 | zone = strchr(secs, ' '); | |
1046 | if (zone && strlen(zone) == sizeof(" +0700") - 1) { | |
1047 | long tz; | |
1048 | ||
1049 | zone++; | |
1050 | tz = ('0' - zone[1]) * 60 * 60 * 10; | |
1051 | tz += ('0' - zone[2]) * 60 * 60; | |
1052 | tz += ('0' - zone[3]) * 60; | |
1053 | tz += ('0' - zone[4]) * 60; | |
1054 | ||
1055 | if (zone[0] == '-') | |
1056 | tz = -tz; | |
1057 | ||
1058 | time -= tz; | |
1059 | } | |
1060 | gmtime_r(&time, &commit->time); | |
1061 | } | |
1062 | break; | |
1063 | } | |
78c70acd JF |
1064 | default: |
1065 | commit = view->line[view->lines - 1]; | |
22f66b0a | 1066 | if (!commit->title[0] && |
22f66b0a JF |
1067 | !strncmp(line, " ", 4) && |
1068 | !isspace(line[5])) | |
1069 | strncpy(commit->title, line + 4, sizeof(commit->title)); | |
1070 | } | |
1071 | ||
1072 | return TRUE; | |
1073 | } | |
1074 | ||
1075 | ||
b801d8b2 JF |
1076 | /* |
1077 | * Main | |
1078 | */ | |
1079 | ||
1080 | static void | |
1081 | quit(int sig) | |
1082 | { | |
1083 | if (status_win) | |
1084 | delwin(status_win); | |
78c70acd JF |
1085 | if (title_win) |
1086 | delwin(title_win); | |
b801d8b2 JF |
1087 | endwin(); |
1088 | ||
1089 | /* FIXME: Shutdown gracefully. */ | |
1090 | ||
1091 | exit(0); | |
1092 | } | |
1093 | ||
1094 | static void die(const char *err, ...) | |
1095 | { | |
1096 | va_list args; | |
1097 | ||
1098 | endwin(); | |
1099 | ||
1100 | va_start(args, err); | |
1101 | fputs("tig: ", stderr); | |
1102 | vfprintf(stderr, err, args); | |
1103 | fputs("\n", stderr); | |
1104 | va_end(args); | |
1105 | ||
1106 | exit(1); | |
1107 | } | |
1108 | ||
1109 | static void | |
1110 | report(const char *msg, ...) | |
1111 | { | |
1112 | va_list args; | |
1113 | ||
b76c2afc JF |
1114 | werase(title_win); |
1115 | wmove(title_win, 0, 0); | |
1116 | wprintw(title_win, "commit %s", commit_id); | |
1117 | wrefresh(title_win); | |
1118 | ||
b801d8b2 JF |
1119 | va_start(args, msg); |
1120 | ||
1121 | werase(status_win); | |
1122 | wmove(status_win, 0, 0); | |
1123 | ||
fd85fef1 | 1124 | #if 0 |
b801d8b2 | 1125 | if (display[current_view]) |
fd85fef1 JF |
1126 | wprintw(status_win, "%s %4s: ", commit_id, display[current_view]->name); |
1127 | #endif | |
b801d8b2 JF |
1128 | vwprintw(status_win, msg, args); |
1129 | wrefresh(status_win); | |
1130 | ||
1131 | va_end(args); | |
b801d8b2 JF |
1132 | } |
1133 | ||
1134 | int | |
1135 | main(int argc, char *argv[]) | |
1136 | { | |
b801d8b2 | 1137 | int x, y; |
b76c2afc JF |
1138 | int request; |
1139 | int git_cmd; | |
b801d8b2 JF |
1140 | |
1141 | signal(SIGINT, quit); | |
1142 | ||
b76c2afc JF |
1143 | git_cmd = parse_options(argc, argv); |
1144 | if (git_cmd < 0) | |
1145 | return 0; | |
1146 | ||
1147 | request = opt_request; | |
1148 | ||
b801d8b2 JF |
1149 | initscr(); /* initialize the curses library */ |
1150 | nonl(); /* tell curses not to do NL->CR/NL on output */ | |
1151 | cbreak(); /* take input chars one at a time, no wait for \n */ | |
1152 | noecho(); /* don't echo input */ | |
1153 | leaveok(stdscr, TRUE); | |
1154 | /* curs_set(0); */ | |
1155 | ||
1156 | if (has_colors()) | |
1157 | init_colors(); | |
1158 | ||
1159 | getmaxyx(stdscr, y, x); | |
1160 | status_win = newwin(1, 0, y - 1, 0); | |
1161 | if (!status_win) | |
1162 | die("Failed to create status window"); | |
1163 | ||
78c70acd JF |
1164 | title_win = newwin(1, 0, y - 2, 0); |
1165 | if (!title_win) | |
1166 | die("Failed to create title window"); | |
1167 | ||
b801d8b2 JF |
1168 | /* Enable keyboard mapping */ |
1169 | keypad(status_win, TRUE); | |
78c70acd JF |
1170 | wbkgdset(status_win, get_line_attr(LINE_STATUS)); |
1171 | wbkgdset(title_win, get_line_attr(LINE_TITLE)); | |
b801d8b2 JF |
1172 | |
1173 | while (view_driver(display[current_view], request)) { | |
1174 | struct view *view; | |
1175 | int i; | |
1176 | ||
1177 | foreach_view (view, i) { | |
1178 | if (view->pipe) { | |
1179 | update_view(view); | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | /* Refresh, accept single keystroke of input */ | |
1184 | request = wgetch(status_win); | |
1185 | if (request == KEY_RESIZE) { | |
1186 | int lines, cols; | |
1187 | ||
1188 | getmaxyx(stdscr, lines, cols); | |
78c70acd | 1189 | |
b801d8b2 JF |
1190 | mvwin(status_win, lines - 1, 0); |
1191 | wresize(status_win, 1, cols - 1); | |
78c70acd JF |
1192 | |
1193 | mvwin(title_win, lines - 2, 0); | |
1194 | wresize(title_win, 1, cols - 1); | |
b801d8b2 JF |
1195 | } |
1196 | } | |
1197 | ||
1198 | quit(0); | |
1199 | ||
1200 | return 0; | |
1201 | } | |
1202 | ||
1203 | /** | |
1204 | * COPYRIGHT | |
1205 | * --------- | |
1206 | * Copyright (c) Jonas Fonseca, 2006 | |
1207 | * | |
1208 | * This program is free software; you can redistribute it and/or modify | |
1209 | * it under the terms of the GNU General Public License as published by | |
1210 | * the Free Software Foundation; either version 2 of the License, or | |
1211 | * (at your option) any later version. | |
1212 | * | |
1213 | * SEE ALSO | |
1214 | * -------- | |
1215 | * link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)], | |
1216 | * link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)] | |
1217 | **/ |