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