Commit | Line | Data |
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4a2909a7 JF |
1 | /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk> |
2 | * See license info at the bottom. */ | |
b801d8b2 JF |
3 | /** |
4 | * TIG(1) | |
5 | * ====== | |
6 | * | |
7 | * NAME | |
8 | * ---- | |
9 | * tig - text-mode interface for git | |
10 | * | |
11 | * SYNOPSIS | |
12 | * -------- | |
13 | * [verse] | |
6b161b31 | 14 | * tig [options] [ref] |
b76c2afc JF |
15 | * tig [options] log [git log options] |
16 | * tig [options] diff [git diff options] | |
4c6fabc2 | 17 | * tig [options] < [git log or git diff output] |
b801d8b2 JF |
18 | * |
19 | * DESCRIPTION | |
20 | * ----------- | |
21 | * Browse changes in a git repository. | |
b801d8b2 JF |
22 | **/ |
23 | ||
b801d8b2 JF |
24 | #ifndef DEBUG |
25 | #define NDEBUG | |
26 | #endif | |
27 | ||
b76c2afc JF |
28 | #ifndef VERSION |
29 | #define VERSION "tig-0.1" | |
30 | #endif | |
31 | ||
22f66b0a | 32 | #include <assert.h> |
4c6fabc2 | 33 | #include <errno.h> |
22f66b0a JF |
34 | #include <ctype.h> |
35 | #include <signal.h> | |
b801d8b2 | 36 | #include <stdarg.h> |
b801d8b2 | 37 | #include <stdio.h> |
22f66b0a | 38 | #include <stdlib.h> |
b801d8b2 | 39 | #include <string.h> |
b76c2afc | 40 | #include <time.h> |
b801d8b2 JF |
41 | |
42 | #include <curses.h> | |
b801d8b2 JF |
43 | |
44 | static void die(const char *err, ...); | |
45 | static void report(const char *msg, ...); | |
6b161b31 JF |
46 | static void set_nonblocking_input(int boolean); |
47 | ||
48 | #define ABS(x) ((x) >= 0 ? (x) : -(x)) | |
49 | #define MIN(x, y) ((x) < (y) ? (x) : (y)) | |
50 | ||
51 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) | |
52 | #define STRING_SIZE(x) (sizeof(x) - 1) | |
b76c2afc | 53 | |
2e8488b4 JF |
54 | #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */ |
55 | #define SIZEOF_CMD 1024 /* Size of command buffer. */ | |
b801d8b2 | 56 | |
82e78006 JF |
57 | /* This color name can be used to refer to the default term colors. */ |
58 | #define COLOR_DEFAULT (-1) | |
78c70acd | 59 | |
82e78006 | 60 | /* The format and size of the date column in the main view. */ |
4c6fabc2 | 61 | #define DATE_FORMAT "%Y-%m-%d %H:%M" |
6b161b31 | 62 | #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ") |
4c6fabc2 | 63 | |
a28bcc22 | 64 | /* The default interval between line numbers. */ |
4a2909a7 | 65 | #define NUMBER_INTERVAL 1 |
82e78006 | 66 | |
a28bcc22 JF |
67 | #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3) |
68 | ||
4a2909a7 | 69 | /* Some ascii-shorthands that fit into the ncurses namespace. */ |
a28bcc22 JF |
70 | #define KEY_TAB '\t' |
71 | #define KEY_RETURN '\r' | |
4a2909a7 JF |
72 | #define KEY_ESC 27 |
73 | ||
a28bcc22 | 74 | /* User action requests. */ |
4a2909a7 | 75 | enum request { |
a28bcc22 JF |
76 | /* Offset all requests to avoid conflicts with ncurses getch values. */ |
77 | REQ_OFFSET = KEY_MAX + 1, | |
78 | ||
4a2909a7 | 79 | /* XXX: Keep the view request first and in sync with views[]. */ |
2e8488b4 | 80 | REQ_VIEW_MAIN, |
4a2909a7 JF |
81 | REQ_VIEW_DIFF, |
82 | REQ_VIEW_LOG, | |
2e8488b4 | 83 | REQ_VIEW_HELP, |
4a2909a7 JF |
84 | |
85 | REQ_QUIT, | |
86 | REQ_SHOW_VERSION, | |
6b161b31 | 87 | REQ_ENTER, |
4a2909a7 JF |
88 | REQ_STOP_LOADING, |
89 | REQ_SCREEN_REDRAW, | |
90 | REQ_SCREEN_UPDATE, | |
91 | REQ_TOGGLE_LINE_NUMBERS, | |
92 | ||
93 | REQ_MOVE_UP, | |
94 | REQ_MOVE_DOWN, | |
95 | REQ_MOVE_PAGE_UP, | |
96 | REQ_MOVE_PAGE_DOWN, | |
97 | REQ_MOVE_FIRST_LINE, | |
98 | REQ_MOVE_LAST_LINE, | |
99 | ||
100 | REQ_SCROLL_LINE_UP, | |
101 | REQ_SCROLL_LINE_DOWN, | |
102 | REQ_SCROLL_PAGE_UP, | |
103 | REQ_SCROLL_PAGE_DOWN, | |
104 | }; | |
105 | ||
4c6fabc2 | 106 | struct commit { |
a28bcc22 | 107 | char id[41]; /* SHA1 ID. */ |
6b161b31 | 108 | char title[75]; /* The first line of the commit message. */ |
a28bcc22 JF |
109 | char author[75]; /* The author of the commit. */ |
110 | struct tm time; /* Date from the author ident. */ | |
4c6fabc2 JF |
111 | }; |
112 | ||
78c70acd | 113 | |
82e78006 JF |
114 | static inline void |
115 | string_ncopy(char *dst, char *src, int dstlen) | |
116 | { | |
117 | strncpy(dst, src, dstlen - 1); | |
118 | dst[dstlen - 1] = 0; | |
119 | } | |
120 | ||
121 | /* Shorthand for safely copying into a fixed buffer. */ | |
122 | #define string_copy(dst, src) \ | |
123 | string_ncopy(dst, src, sizeof(dst)) | |
124 | ||
125 | ||
b76c2afc JF |
126 | /** |
127 | * OPTIONS | |
128 | * ------- | |
129 | **/ | |
130 | ||
2e8488b4 JF |
131 | static int opt_line_number = FALSE; |
132 | static int opt_num_interval = NUMBER_INTERVAL; | |
6b161b31 | 133 | static enum request opt_request = REQ_VIEW_MAIN; |
b76c2afc | 134 | |
2e8488b4 JF |
135 | char ref_head[SIZEOF_REF] = "HEAD"; |
136 | char ref_commit[SIZEOF_REF] = "HEAD"; | |
b76c2afc | 137 | |
b76c2afc JF |
138 | /* Returns the index of log or diff command or -1 to exit. */ |
139 | static int | |
140 | parse_options(int argc, char *argv[]) | |
141 | { | |
142 | int i; | |
143 | ||
144 | for (i = 1; i < argc; i++) { | |
145 | char *opt = argv[i]; | |
146 | ||
147 | /** | |
148 | * log [options]:: | |
149 | * git log options. | |
2e8488b4 | 150 | * |
b76c2afc JF |
151 | * diff [options]:: |
152 | * git diff options. | |
153 | **/ | |
2e8488b4 JF |
154 | if (!strcmp(opt, "log") || |
155 | !strcmp(opt, "diff")) { | |
a28bcc22 | 156 | opt_request = opt[0] == 'l' |
2e8488b4 | 157 | ? REQ_VIEW_LOG : REQ_VIEW_DIFF; |
b76c2afc | 158 | return i; |
6b161b31 | 159 | } |
b76c2afc JF |
160 | |
161 | /** | |
162 | * -l:: | |
163 | * Start up in log view. | |
164 | **/ | |
6b161b31 | 165 | if (!strcmp(opt, "-l")) { |
4a2909a7 | 166 | opt_request = REQ_VIEW_LOG; |
6b161b31 JF |
167 | continue; |
168 | } | |
b76c2afc JF |
169 | |
170 | /** | |
171 | * -d:: | |
172 | * Start up in diff view. | |
173 | **/ | |
6b161b31 | 174 | if (!strcmp(opt, "-d")) { |
4a2909a7 | 175 | opt_request = REQ_VIEW_DIFF; |
6b161b31 JF |
176 | continue; |
177 | } | |
b76c2afc JF |
178 | |
179 | /** | |
2e8488b4 | 180 | * -n[INTERVAL], --line-number[=INTERVAL]:: |
b76c2afc | 181 | * Prefix line numbers in log and diff view. |
2e8488b4 | 182 | * Optionally, with interval different than each line. |
b76c2afc | 183 | **/ |
6b161b31 | 184 | if (!strncmp(opt, "-n", 2) || |
2e8488b4 JF |
185 | !strncmp(opt, "--line-number", 13)) { |
186 | char *num = opt; | |
187 | ||
188 | if (opt[1] == 'n') { | |
189 | num = opt + 2; | |
190 | ||
191 | } else if (opt[STRING_SIZE("--line-number")] == '=') { | |
192 | num = opt + STRING_SIZE("--line-number="); | |
193 | } | |
194 | ||
195 | if (isdigit(*num)) | |
196 | opt_num_interval = atoi(num); | |
197 | ||
6b161b31 JF |
198 | opt_line_number = TRUE; |
199 | continue; | |
200 | } | |
b76c2afc JF |
201 | |
202 | /** | |
203 | * -v, --version:: | |
204 | * Show version and exit. | |
205 | **/ | |
6b161b31 | 206 | if (!strcmp(opt, "-v") || |
b76c2afc JF |
207 | !strcmp(opt, "--version")) { |
208 | printf("tig version %s\n", VERSION); | |
209 | return -1; | |
6b161b31 | 210 | } |
b76c2afc JF |
211 | |
212 | /** | |
213 | * ref:: | |
214 | * Commit reference, symbolic or raw SHA1 ID. | |
215 | **/ | |
6b161b31 | 216 | if (opt[0] && opt[0] != '-') { |
2e8488b4 JF |
217 | string_copy(ref_head, opt); |
218 | string_copy(ref_commit, opt); | |
6b161b31 | 219 | continue; |
b76c2afc | 220 | } |
6b161b31 JF |
221 | |
222 | die("unknown command '%s'", opt); | |
b76c2afc JF |
223 | } |
224 | ||
225 | return i; | |
226 | } | |
227 | ||
228 | ||
4a2909a7 JF |
229 | /** |
230 | * KEYS | |
231 | * ---- | |
4a2909a7 JF |
232 | **/ |
233 | ||
234 | #define HELP "(d)iff, (l)og, (m)ain, (q)uit, (v)ersion, (h)elp" | |
235 | ||
236 | struct keymap { | |
237 | int alias; | |
238 | int request; | |
239 | }; | |
240 | ||
241 | struct keymap keymap[] = { | |
6b161b31 JF |
242 | /** |
243 | * View switching | |
244 | * ~~~~~~~~~~~~~~ | |
245 | * d:: | |
246 | * Switch to diff view. | |
247 | * l:: | |
248 | * Switch to log view. | |
249 | * m:: | |
250 | * Switch to main view. | |
251 | * h:: | |
252 | * Show man page. | |
253 | * Return:: | |
254 | * If in main view split the view | |
255 | * and show the diff in the bottom view. | |
256 | **/ | |
257 | { 'm', REQ_VIEW_MAIN }, | |
258 | { 'd', REQ_VIEW_DIFF }, | |
259 | { 'l', REQ_VIEW_LOG }, | |
260 | { 'h', REQ_VIEW_HELP }, | |
261 | ||
262 | { KEY_RETURN, REQ_ENTER }, | |
263 | ||
264 | /** | |
265 | * Cursor navigation | |
266 | * ~~~~~~~~~~~~~~~~~ | |
267 | * Up, k:: | |
268 | * Move curser one line up. | |
269 | * Down, j:: | |
270 | * Move cursor one line down. | |
271 | * Page Up:: | |
272 | * Move curser one page up. | |
273 | * Page Down:: | |
274 | * Move cursor one page down. | |
275 | * Home:: | |
276 | * Jump to first line. | |
277 | * End:: | |
278 | * Jump to last line. | |
279 | **/ | |
4a2909a7 JF |
280 | { KEY_UP, REQ_MOVE_UP }, |
281 | { 'k', REQ_MOVE_UP }, | |
282 | { KEY_DOWN, REQ_MOVE_DOWN }, | |
283 | { 'j', REQ_MOVE_DOWN }, | |
284 | { KEY_HOME, REQ_MOVE_FIRST_LINE }, | |
285 | { KEY_END, REQ_MOVE_LAST_LINE }, | |
286 | { KEY_NPAGE, REQ_MOVE_PAGE_DOWN }, | |
287 | { KEY_PPAGE, REQ_MOVE_PAGE_UP }, | |
288 | ||
6b161b31 JF |
289 | /** |
290 | * Scrolling | |
291 | * ~~~~~~~~~ | |
292 | * Insert:: | |
293 | * Scroll view one line up. | |
294 | * Delete:: | |
295 | * Scroll view one line down. | |
296 | * w:: | |
297 | * Scroll view one page up. | |
298 | * s:: | |
299 | * Scroll view one page down. | |
300 | **/ | |
a28bcc22 JF |
301 | { KEY_IC, REQ_SCROLL_LINE_UP }, |
302 | { KEY_DC, REQ_SCROLL_LINE_DOWN }, | |
303 | { 'w', REQ_SCROLL_PAGE_UP }, | |
304 | { 's', REQ_SCROLL_PAGE_DOWN }, | |
305 | ||
6b161b31 JF |
306 | /** |
307 | * Misc | |
308 | * ~~~~ | |
309 | * q, Escape:: | |
310 | * Quit | |
311 | * r:: | |
312 | * Redraw screen. | |
313 | * z:: | |
314 | * Stop all background loading. | |
315 | * v:: | |
316 | * Show version. | |
317 | * n:: | |
318 | * Toggle line numbers on/off. | |
319 | **/ | |
4a2909a7 JF |
320 | { KEY_ESC, REQ_QUIT }, |
321 | { 'q', REQ_QUIT }, | |
322 | { 'z', REQ_STOP_LOADING }, | |
323 | { 'v', REQ_SHOW_VERSION }, | |
324 | { 'r', REQ_SCREEN_REDRAW }, | |
325 | { 'n', REQ_TOGGLE_LINE_NUMBERS }, | |
326 | ||
327 | /* wgetch() with nodelay() enabled returns ERR when there's no input. */ | |
328 | { ERR, REQ_SCREEN_UPDATE }, | |
329 | }; | |
330 | ||
6b161b31 JF |
331 | static enum request |
332 | get_request(int key) | |
4a2909a7 JF |
333 | { |
334 | int i; | |
335 | ||
336 | for (i = 0; i < ARRAY_SIZE(keymap); i++) | |
6b161b31 | 337 | if (keymap[i].alias == key) |
4a2909a7 JF |
338 | return keymap[i].request; |
339 | ||
6b161b31 | 340 | return (enum request) key; |
4a2909a7 JF |
341 | } |
342 | ||
343 | ||
b76c2afc JF |
344 | /* |
345 | * Line-oriented content detection. | |
6b161b31 JF |
346 | */ |
347 | ||
2e8488b4 | 348 | #define LINE_INFO \ |
6b161b31 JF |
349 | /* Line type String to match Foreground Background Attributes |
350 | * --------- --------------- ---------- ---------- ---------- */ \ | |
a28bcc22 JF |
351 | /* Diff markup */ \ |
352 | LINE(DIFF, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
353 | LINE(INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
354 | LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ | |
355 | LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
356 | LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \ | |
357 | LINE(DIFF_OLDMODE, "old mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
358 | LINE(DIFF_NEWMODE, "new mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
359 | LINE(DIFF_COPY, "copy ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
360 | LINE(DIFF_RENAME, "rename ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
361 | LINE(DIFF_SIM, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
362 | LINE(DIFF_DISSIM, "dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
363 | /* Pretty print commit header */ \ | |
364 | LINE(AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \ | |
365 | LINE(MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
366 | LINE(DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
367 | /* Raw commit header */ \ | |
368 | LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
369 | LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
370 | LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
371 | LINE(AUTHOR_IDENT, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \ | |
372 | LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ | |
373 | /* Misc */ \ | |
374 | LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
375 | LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
376 | /* UI colors */ \ | |
377 | LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \ | |
378 | LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \ | |
379 | LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
6b161b31 JF |
380 | LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \ |
381 | LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \ | |
a28bcc22 JF |
382 | LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
383 | LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
384 | LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \ | |
385 | LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), | |
2e8488b4 | 386 | |
78c70acd | 387 | enum line_type { |
2e8488b4 JF |
388 | #define LINE(type, line, fg, bg, attr) \ |
389 | LINE_##type | |
390 | LINE_INFO | |
391 | #undef LINE | |
78c70acd JF |
392 | }; |
393 | ||
394 | struct line_info { | |
2e8488b4 JF |
395 | char *line; /* The start of line to match. */ |
396 | int linelen; /* Size of string to match. */ | |
397 | int fg, bg, attr; /* Color and text attributes for the lines. */ | |
78c70acd JF |
398 | }; |
399 | ||
2e8488b4 | 400 | static struct line_info line_info[] = { |
78c70acd | 401 | #define LINE(type, line, fg, bg, attr) \ |
a28bcc22 | 402 | { (line), STRING_SIZE(line), (fg), (bg), (attr) } |
2e8488b4 JF |
403 | LINE_INFO |
404 | #undef LINE | |
78c70acd JF |
405 | }; |
406 | ||
2e8488b4 JF |
407 | static enum line_type |
408 | get_line_type(char *line) | |
78c70acd JF |
409 | { |
410 | int linelen = strlen(line); | |
a28bcc22 | 411 | enum line_type type; |
78c70acd | 412 | |
a28bcc22 | 413 | for (type = 0; type < ARRAY_SIZE(line_info); type++) |
2e8488b4 | 414 | /* Case insensitive search matches Signed-off-by lines better. */ |
a28bcc22 JF |
415 | if (linelen >= line_info[type].linelen && |
416 | !strncasecmp(line_info[type].line, line, line_info[type].linelen)) | |
417 | return type; | |
78c70acd | 418 | |
2e8488b4 | 419 | return LINE_DEFAULT; |
78c70acd JF |
420 | } |
421 | ||
2e8488b4 | 422 | static inline int |
78c70acd JF |
423 | get_line_attr(enum line_type type) |
424 | { | |
2e8488b4 JF |
425 | assert(type < ARRAY_SIZE(line_info)); |
426 | return COLOR_PAIR(type) | line_info[type].attr; | |
78c70acd JF |
427 | } |
428 | ||
429 | static void | |
430 | init_colors(void) | |
431 | { | |
82e78006 JF |
432 | int default_bg = COLOR_BLACK; |
433 | int default_fg = COLOR_WHITE; | |
a28bcc22 | 434 | enum line_type type; |
78c70acd JF |
435 | |
436 | start_color(); | |
437 | ||
438 | if (use_default_colors() != ERR) { | |
82e78006 JF |
439 | default_bg = -1; |
440 | default_fg = -1; | |
78c70acd JF |
441 | } |
442 | ||
a28bcc22 JF |
443 | for (type = 0; type < ARRAY_SIZE(line_info); type++) { |
444 | struct line_info *info = &line_info[type]; | |
82e78006 JF |
445 | int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg; |
446 | int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg; | |
78c70acd | 447 | |
a28bcc22 | 448 | init_pair(type, fg, bg); |
78c70acd JF |
449 | } |
450 | } | |
451 | ||
452 | ||
b801d8b2 JF |
453 | /* |
454 | * Viewer | |
455 | */ | |
456 | ||
457 | struct view { | |
6b161b31 JF |
458 | const char *name; |
459 | const char *cmd; | |
fd85fef1 | 460 | char *id; |
b801d8b2 | 461 | |
6b161b31 JF |
462 | size_t objsize; /* Size of objects in the line index */ |
463 | ||
464 | struct view_ops { | |
465 | bool (*draw)(struct view *view, unsigned int lineno); | |
466 | bool (*read)(struct view *view, char *line); | |
467 | bool (*enter)(struct view *view); | |
468 | } *ops; | |
22f66b0a | 469 | |
2e8488b4 | 470 | char cmdbuf[SIZEOF_CMD]; |
6b161b31 | 471 | char ref[SIZEOF_REF]; /* Commit reference */ |
2e8488b4 | 472 | |
b801d8b2 | 473 | WINDOW *win; |
a28bcc22 | 474 | WINDOW *title; |
fd85fef1 | 475 | int height, width; |
b801d8b2 JF |
476 | |
477 | /* Navigation */ | |
478 | unsigned long offset; /* Offset of the window top */ | |
479 | unsigned long lineno; /* Current line number */ | |
480 | ||
481 | /* Buffering */ | |
482 | unsigned long lines; /* Total number of lines */ | |
22f66b0a | 483 | void **line; /* Line index */ |
b801d8b2 JF |
484 | |
485 | /* Loading */ | |
486 | FILE *pipe; | |
2e8488b4 | 487 | time_t start_time; |
b801d8b2 JF |
488 | }; |
489 | ||
6b161b31 JF |
490 | static struct view_ops pager_ops; |
491 | static struct view_ops main_ops; | |
a28bcc22 | 492 | |
fd85fef1 | 493 | #define DIFF_CMD \ |
b801d8b2 JF |
494 | "git log --stat -n1 %s ; echo; " \ |
495 | "git diff --find-copies-harder -B -C %s^ %s" | |
496 | ||
497 | #define LOG_CMD \ | |
9d3f5834 | 498 | "git log --cc --stat -n100 %s" |
b801d8b2 | 499 | |
fd85fef1 JF |
500 | #define MAIN_CMD \ |
501 | "git log --stat --pretty=raw %s" | |
502 | ||
2e8488b4 JF |
503 | #define HELP_CMD \ |
504 | "man tig 2> /dev/null" | |
505 | ||
b801d8b2 | 506 | static struct view views[] = { |
6b161b31 JF |
507 | { "main", MAIN_CMD, ref_head, sizeof(struct commit), &main_ops }, |
508 | { "diff", DIFF_CMD, ref_commit, sizeof(char), &pager_ops }, | |
509 | { "log", LOG_CMD, ref_head, sizeof(char), &pager_ops }, | |
510 | { "help", HELP_CMD, ref_head, sizeof(char), &pager_ops }, | |
b801d8b2 JF |
511 | }; |
512 | ||
a28bcc22 JF |
513 | #define VIEW(req) (&views[(req) - REQ_OFFSET - 1]) |
514 | ||
4c6fabc2 | 515 | /* The display array of active views and the index of the current view. */ |
6b161b31 | 516 | static struct view *display[2]; |
4c6fabc2 | 517 | static unsigned int current_view; |
22f66b0a | 518 | |
b801d8b2 | 519 | #define foreach_view(view, i) \ |
6b161b31 | 520 | for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++) |
b801d8b2 | 521 | |
4c6fabc2 | 522 | |
b801d8b2 | 523 | static void |
82e78006 | 524 | redraw_view_from(struct view *view, int lineno) |
b801d8b2 | 525 | { |
82e78006 | 526 | assert(0 <= lineno && lineno < view->height); |
b801d8b2 | 527 | |
82e78006 | 528 | for (; lineno < view->height; lineno++) { |
6b161b31 | 529 | if (!view->ops->draw(view, lineno)) |
fd85fef1 | 530 | break; |
b801d8b2 JF |
531 | } |
532 | ||
533 | redrawwin(view->win); | |
534 | wrefresh(view->win); | |
535 | } | |
536 | ||
b76c2afc | 537 | static void |
82e78006 JF |
538 | redraw_view(struct view *view) |
539 | { | |
540 | wclear(view->win); | |
541 | redraw_view_from(view, 0); | |
542 | } | |
543 | ||
6b161b31 JF |
544 | static void |
545 | resize_display(void) | |
b76c2afc | 546 | { |
6b161b31 JF |
547 | int height, width, offset, i; |
548 | struct view *base = display[0]; | |
549 | struct view *view = display[1] ? display[1] : display[0]; | |
b76c2afc | 550 | |
6b161b31 | 551 | /* Setup window dimensions */ |
b76c2afc | 552 | |
6b161b31 | 553 | getmaxyx(stdscr, height, width); |
b76c2afc | 554 | |
6b161b31 JF |
555 | /* Make room for the status window. */ |
556 | base->height = height - 1; | |
557 | base->width = width; | |
558 | ||
559 | if (view != base) { | |
560 | view->height = SCALE_SPLIT_VIEW(base->height); | |
561 | base->height -= view->height; | |
562 | ||
563 | /* Make room for the title bar. */ | |
564 | view->height -= 1; | |
565 | } | |
566 | ||
567 | /* Make room for the title bar. */ | |
568 | base->height -= 1; | |
569 | ||
570 | offset = 0; | |
571 | ||
572 | foreach_view (view, i) { | |
b76c2afc | 573 | if (!view->win) { |
6b161b31 JF |
574 | view->win = newwin(view->height, 0, offset, 0); |
575 | if (!view->win) | |
576 | die("Failed to create %s view", view->name); | |
577 | ||
578 | scrollok(view->win, TRUE); | |
579 | ||
580 | view->title = newwin(1, 0, offset + view->height, 0); | |
581 | if (!view->title) | |
582 | die("Failed to create title window"); | |
583 | ||
584 | } else { | |
585 | wresize(view->win, view->height, view->width); | |
586 | mvwin(view->win, offset, 0); | |
587 | mvwin(view->title, offset + view->height, 0); | |
588 | wrefresh(view->win); | |
a28bcc22 | 589 | } |
a28bcc22 | 590 | |
6b161b31 | 591 | offset += view->height + 1; |
b76c2afc | 592 | } |
6b161b31 | 593 | } |
b76c2afc | 594 | |
6b161b31 JF |
595 | static void |
596 | update_view_title(struct view *view) | |
597 | { | |
598 | if (view == display[current_view]) | |
599 | wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS)); | |
600 | else | |
601 | wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR)); | |
a28bcc22 | 602 | |
6b161b31 JF |
603 | werase(view->title); |
604 | wmove(view->title, 0, 0); | |
b76c2afc | 605 | |
6b161b31 JF |
606 | /* [main] ref: 334b506... - commit 6 of 4383 (0%) */ |
607 | wprintw(view->title, "[%s] ref: %s", view->name, ref_commit); | |
608 | if (view->lines) { | |
609 | char *type = view == VIEW(REQ_VIEW_MAIN) ? "commit" : "line"; | |
610 | ||
611 | wprintw(view->title, " - %s %d of %d (%d%%)", | |
612 | type, | |
613 | view->lineno + 1, | |
614 | view->lines, | |
615 | (view->lineno + 1) * 100 / view->lines); | |
616 | } | |
617 | ||
618 | wrefresh(view->title); | |
619 | } | |
78c70acd | 620 | |
2e8488b4 JF |
621 | /* |
622 | * Navigation | |
623 | */ | |
624 | ||
4a2909a7 | 625 | /* Scrolling backend */ |
b801d8b2 | 626 | static void |
4a2909a7 | 627 | do_scroll_view(struct view *view, int lines) |
b801d8b2 | 628 | { |
fd85fef1 JF |
629 | /* The rendering expects the new offset. */ |
630 | view->offset += lines; | |
631 | ||
632 | assert(0 <= view->offset && view->offset < view->lines); | |
633 | assert(lines); | |
b801d8b2 | 634 | |
82e78006 | 635 | /* Redraw the whole screen if scrolling is pointless. */ |
4c6fabc2 | 636 | if (view->height < ABS(lines)) { |
b76c2afc JF |
637 | redraw_view(view); |
638 | ||
639 | } else { | |
22f66b0a | 640 | int line = lines > 0 ? view->height - lines : 0; |
82e78006 | 641 | int end = line + ABS(lines); |
fd85fef1 JF |
642 | |
643 | wscrl(view->win, lines); | |
644 | ||
22f66b0a | 645 | for (; line < end; line++) { |
6b161b31 | 646 | if (!view->ops->draw(view, line)) |
fd85fef1 JF |
647 | break; |
648 | } | |
649 | } | |
650 | ||
651 | /* Move current line into the view. */ | |
652 | if (view->lineno < view->offset) { | |
653 | view->lineno = view->offset; | |
6b161b31 | 654 | view->ops->draw(view, 0); |
fd85fef1 JF |
655 | |
656 | } else if (view->lineno >= view->offset + view->height) { | |
657 | view->lineno = view->offset + view->height - 1; | |
6b161b31 | 658 | view->ops->draw(view, view->lineno - view->offset); |
fd85fef1 JF |
659 | } |
660 | ||
4c6fabc2 | 661 | assert(view->offset <= view->lineno && view->lineno < view->lines); |
fd85fef1 JF |
662 | |
663 | redrawwin(view->win); | |
664 | wrefresh(view->win); | |
9d3f5834 | 665 | report(""); |
fd85fef1 | 666 | } |
78c70acd | 667 | |
4a2909a7 | 668 | /* Scroll frontend */ |
fd85fef1 | 669 | static void |
6b161b31 | 670 | scroll_view(struct view *view, enum request request) |
fd85fef1 JF |
671 | { |
672 | int lines = 1; | |
b801d8b2 JF |
673 | |
674 | switch (request) { | |
4a2909a7 | 675 | case REQ_SCROLL_PAGE_DOWN: |
fd85fef1 | 676 | lines = view->height; |
4a2909a7 | 677 | case REQ_SCROLL_LINE_DOWN: |
b801d8b2 | 678 | if (view->offset + lines > view->lines) |
bde3653a | 679 | lines = view->lines - view->offset; |
b801d8b2 | 680 | |
fd85fef1 | 681 | if (lines == 0 || view->offset + view->height >= view->lines) { |
2e8488b4 | 682 | report("Already at last line"); |
b801d8b2 JF |
683 | return; |
684 | } | |
685 | break; | |
686 | ||
4a2909a7 | 687 | case REQ_SCROLL_PAGE_UP: |
fd85fef1 | 688 | lines = view->height; |
4a2909a7 | 689 | case REQ_SCROLL_LINE_UP: |
b801d8b2 JF |
690 | if (lines > view->offset) |
691 | lines = view->offset; | |
692 | ||
693 | if (lines == 0) { | |
2e8488b4 | 694 | report("Already at first line"); |
b801d8b2 JF |
695 | return; |
696 | } | |
697 | ||
fd85fef1 | 698 | lines = -lines; |
b801d8b2 | 699 | break; |
6b161b31 JF |
700 | default: |
701 | die("request %d not handled in switch", request); | |
b801d8b2 JF |
702 | } |
703 | ||
4a2909a7 | 704 | do_scroll_view(view, lines); |
fd85fef1 | 705 | } |
b801d8b2 | 706 | |
4a2909a7 | 707 | /* Cursor moving */ |
fd85fef1 | 708 | static void |
6b161b31 | 709 | move_view(struct view *view, enum request request) |
fd85fef1 JF |
710 | { |
711 | int steps; | |
b801d8b2 | 712 | |
fd85fef1 | 713 | switch (request) { |
4a2909a7 | 714 | case REQ_MOVE_FIRST_LINE: |
78c70acd JF |
715 | steps = -view->lineno; |
716 | break; | |
717 | ||
4a2909a7 | 718 | case REQ_MOVE_LAST_LINE: |
78c70acd JF |
719 | steps = view->lines - view->lineno - 1; |
720 | break; | |
721 | ||
4a2909a7 | 722 | case REQ_MOVE_PAGE_UP: |
78c70acd JF |
723 | steps = view->height > view->lineno |
724 | ? -view->lineno : -view->height; | |
725 | break; | |
726 | ||
4a2909a7 | 727 | case REQ_MOVE_PAGE_DOWN: |
78c70acd JF |
728 | steps = view->lineno + view->height >= view->lines |
729 | ? view->lines - view->lineno - 1 : view->height; | |
730 | break; | |
731 | ||
4a2909a7 | 732 | case REQ_MOVE_UP: |
fd85fef1 JF |
733 | steps = -1; |
734 | break; | |
b801d8b2 | 735 | |
4a2909a7 | 736 | case REQ_MOVE_DOWN: |
fd85fef1 JF |
737 | steps = 1; |
738 | break; | |
6b161b31 JF |
739 | |
740 | default: | |
741 | die("request %d not handled in switch", request); | |
78c70acd | 742 | } |
b801d8b2 | 743 | |
4c6fabc2 | 744 | if (steps <= 0 && view->lineno == 0) { |
2e8488b4 | 745 | report("Already at first line"); |
78c70acd | 746 | return; |
b801d8b2 | 747 | |
4c6fabc2 | 748 | } else if (steps >= 0 && view->lineno + 1 == view->lines) { |
2e8488b4 | 749 | report("Already at last line"); |
78c70acd | 750 | return; |
fd85fef1 JF |
751 | } |
752 | ||
4c6fabc2 | 753 | /* Move the current line */ |
fd85fef1 | 754 | view->lineno += steps; |
4c6fabc2 JF |
755 | assert(0 <= view->lineno && view->lineno < view->lines); |
756 | ||
757 | /* Repaint the old "current" line if we be scrolling */ | |
2e8488b4 JF |
758 | if (ABS(steps) < view->height) { |
759 | int prev_lineno = view->lineno - steps - view->offset; | |
760 | ||
761 | wmove(view->win, prev_lineno, 0); | |
762 | wclrtoeol(view->win); | |
6b161b31 | 763 | view->ops->draw(view, view->lineno - steps - view->offset); |
2e8488b4 | 764 | } |
fd85fef1 | 765 | |
4c6fabc2 | 766 | /* Check whether the view needs to be scrolled */ |
fd85fef1 JF |
767 | if (view->lineno < view->offset || |
768 | view->lineno >= view->offset + view->height) { | |
769 | if (steps < 0 && -steps > view->offset) { | |
770 | steps = -view->offset; | |
b76c2afc JF |
771 | |
772 | } else if (steps > 0) { | |
773 | if (view->lineno == view->lines - 1 && | |
774 | view->lines > view->height) { | |
775 | steps = view->lines - view->offset - 1; | |
776 | if (steps >= view->height) | |
777 | steps -= view->height - 1; | |
778 | } | |
b801d8b2 | 779 | } |
78c70acd | 780 | |
4a2909a7 | 781 | do_scroll_view(view, steps); |
fd85fef1 | 782 | return; |
b801d8b2 JF |
783 | } |
784 | ||
4c6fabc2 | 785 | /* Draw the current line */ |
6b161b31 | 786 | view->ops->draw(view, view->lineno - view->offset); |
fd85fef1 | 787 | |
b801d8b2 JF |
788 | redrawwin(view->win); |
789 | wrefresh(view->win); | |
9d3f5834 | 790 | report(""); |
b801d8b2 JF |
791 | } |
792 | ||
b801d8b2 | 793 | |
2e8488b4 JF |
794 | /* |
795 | * Incremental updating | |
796 | */ | |
b801d8b2 | 797 | |
6b161b31 | 798 | static int |
b801d8b2 JF |
799 | begin_update(struct view *view) |
800 | { | |
2e8488b4 | 801 | char *id = view->id; |
fd85fef1 | 802 | |
2e8488b4 JF |
803 | if (snprintf(view->cmdbuf, sizeof(view->cmdbuf), view->cmd, |
804 | id, id, id) < sizeof(view->cmdbuf)) | |
805 | view->pipe = popen(view->cmdbuf, "r"); | |
b801d8b2 | 806 | |
2e8488b4 JF |
807 | if (!view->pipe) |
808 | return FALSE; | |
b801d8b2 | 809 | |
6b161b31 | 810 | set_nonblocking_input(TRUE); |
b801d8b2 JF |
811 | |
812 | view->offset = 0; | |
813 | view->lines = 0; | |
814 | view->lineno = 0; | |
815 | ||
2e8488b4 JF |
816 | if (view->line) { |
817 | int i; | |
818 | ||
819 | for (i = 0; i < view->lines; i++) | |
820 | if (view->line[i]) | |
821 | free(view->line[i]); | |
822 | ||
823 | free(view->line); | |
824 | view->line = NULL; | |
825 | } | |
826 | ||
827 | view->start_time = time(NULL); | |
828 | ||
b801d8b2 JF |
829 | return TRUE; |
830 | } | |
831 | ||
832 | static void | |
833 | end_update(struct view *view) | |
834 | { | |
6b161b31 | 835 | set_nonblocking_input(FALSE); |
2e8488b4 JF |
836 | pclose(view->pipe); |
837 | view->pipe = NULL; | |
b801d8b2 JF |
838 | } |
839 | ||
840 | static int | |
841 | update_view(struct view *view) | |
842 | { | |
843 | char buffer[BUFSIZ]; | |
844 | char *line; | |
22f66b0a | 845 | void **tmp; |
82e78006 JF |
846 | /* The number of lines to read. If too low it will cause too much |
847 | * redrawing (and possible flickering), if too high responsiveness | |
848 | * will suffer. */ | |
fd85fef1 | 849 | int lines = view->height; |
82e78006 | 850 | int redraw_from = -1; |
b801d8b2 JF |
851 | |
852 | if (!view->pipe) | |
853 | return TRUE; | |
854 | ||
82e78006 JF |
855 | /* Only redraw if lines are visible. */ |
856 | if (view->offset + view->height >= view->lines) | |
857 | redraw_from = view->lines - view->offset; | |
b801d8b2 JF |
858 | |
859 | tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines)); | |
860 | if (!tmp) | |
861 | goto alloc_error; | |
862 | ||
863 | view->line = tmp; | |
864 | ||
865 | while ((line = fgets(buffer, sizeof(buffer), view->pipe))) { | |
866 | int linelen; | |
867 | ||
b801d8b2 JF |
868 | linelen = strlen(line); |
869 | if (linelen) | |
870 | line[linelen - 1] = 0; | |
871 | ||
6b161b31 | 872 | if (!view->ops->read(view, line)) |
b801d8b2 | 873 | goto alloc_error; |
fd85fef1 JF |
874 | |
875 | if (lines-- == 1) | |
876 | break; | |
b801d8b2 JF |
877 | } |
878 | ||
4a2909a7 | 879 | /* CPU hogilicious! */ |
6b161b31 | 880 | update_view_title(view); |
4a2909a7 | 881 | |
82e78006 JF |
882 | if (redraw_from >= 0) { |
883 | /* If this is an incremental update, redraw the previous line | |
a28bcc22 JF |
884 | * since for commits some members could have changed when |
885 | * loading the main view. */ | |
82e78006 JF |
886 | if (redraw_from > 0) |
887 | redraw_from--; | |
888 | ||
889 | /* Incrementally draw avoids flickering. */ | |
890 | redraw_view_from(view, redraw_from); | |
4c6fabc2 | 891 | } |
b801d8b2 JF |
892 | |
893 | if (ferror(view->pipe)) { | |
2e8488b4 | 894 | report("Failed to read %s: %s", view->cmd, strerror(errno)); |
b801d8b2 JF |
895 | goto end; |
896 | ||
897 | } else if (feof(view->pipe)) { | |
2e8488b4 JF |
898 | time_t secs = time(NULL) - view->start_time; |
899 | ||
a28bcc22 JF |
900 | if (view == VIEW(REQ_VIEW_HELP)) { |
901 | report("%s", HELP); | |
2e8488b4 JF |
902 | goto end; |
903 | } | |
904 | ||
905 | report("Loaded %d lines in %ld second%s", view->lines, secs, | |
906 | secs == 1 ? "" : "s"); | |
b801d8b2 JF |
907 | goto end; |
908 | } | |
909 | ||
910 | return TRUE; | |
911 | ||
912 | alloc_error: | |
2e8488b4 | 913 | report("Allocation failure"); |
b801d8b2 JF |
914 | |
915 | end: | |
916 | end_update(view); | |
917 | return FALSE; | |
918 | } | |
919 | ||
6b161b31 JF |
920 | static void |
921 | switch_view(struct view *prev, enum request request, | |
922 | bool backgrounded, bool split) | |
b801d8b2 | 923 | { |
a28bcc22 | 924 | struct view *view = VIEW(request); |
b801d8b2 | 925 | struct view *displayed; |
6b161b31 JF |
926 | int nviews; |
927 | ||
928 | /* Cycle between displayed views */ | |
929 | foreach_view (displayed, nviews) { | |
930 | if (view == displayed && prev != view) { | |
931 | current_view = nviews; | |
932 | /* Blur out the title of the previous view. */ | |
933 | update_view_title(prev); | |
934 | report("Switching to %s view", view->name); | |
935 | return; | |
a28bcc22 | 936 | } |
6b161b31 | 937 | } |
b801d8b2 | 938 | |
6b161b31 JF |
939 | if (view == prev && nviews == 1) { |
940 | report("Already in %s view", view->name); | |
941 | return; | |
942 | } | |
b801d8b2 | 943 | |
6b161b31 JF |
944 | /* Split to diff view? */ |
945 | if (split && | |
946 | nviews == 1 && | |
947 | SCALE_SPLIT_VIEW(prev->height) > 3 && | |
948 | prev == VIEW(REQ_VIEW_MAIN) && | |
949 | view == VIEW(REQ_VIEW_DIFF)) { | |
950 | split = TRUE; | |
951 | } | |
a28bcc22 | 952 | |
6b161b31 JF |
953 | if (!begin_update(view)) { |
954 | report("Failed to load %s view", view->name); | |
955 | return; | |
956 | } | |
a28bcc22 | 957 | |
6b161b31 JF |
958 | if (split) { |
959 | display[current_view + 1] = view; | |
960 | if (!backgrounded) | |
a28bcc22 | 961 | current_view++; |
6b161b31 JF |
962 | } else { |
963 | /* Maximize the current view. */ | |
964 | memset(display, 0, sizeof(display)); | |
965 | current_view = 0; | |
966 | display[current_view] = view; | |
a28bcc22 | 967 | } |
b801d8b2 | 968 | |
6b161b31 | 969 | resize_display(); |
b801d8b2 | 970 | |
6b161b31 JF |
971 | if (prev && view != prev) { |
972 | /* "Blur" the previous view. */ | |
973 | update_view_title(prev); | |
974 | ||
975 | /* Continue loading split views in the background. */ | |
976 | if (!split && prev->pipe) | |
977 | end_update(prev); | |
b801d8b2 JF |
978 | } |
979 | ||
6b161b31 JF |
980 | /* Clear the old view and let the incremental updating refill |
981 | * the screen. */ | |
982 | wclear(view->win); | |
983 | report("Loading..."); | |
b801d8b2 JF |
984 | } |
985 | ||
986 | ||
6b161b31 JF |
987 | /* |
988 | * User request switch noodle | |
989 | */ | |
990 | ||
b801d8b2 | 991 | static int |
6b161b31 | 992 | view_driver(struct view *view, enum request request) |
b801d8b2 | 993 | { |
b801d8b2 JF |
994 | int i; |
995 | ||
996 | switch (request) { | |
4a2909a7 JF |
997 | case REQ_MOVE_UP: |
998 | case REQ_MOVE_DOWN: | |
999 | case REQ_MOVE_PAGE_UP: | |
1000 | case REQ_MOVE_PAGE_DOWN: | |
1001 | case REQ_MOVE_FIRST_LINE: | |
1002 | case REQ_MOVE_LAST_LINE: | |
a28bcc22 | 1003 | move_view(view, request); |
fd85fef1 JF |
1004 | break; |
1005 | ||
4a2909a7 JF |
1006 | case REQ_SCROLL_LINE_DOWN: |
1007 | case REQ_SCROLL_LINE_UP: | |
1008 | case REQ_SCROLL_PAGE_DOWN: | |
1009 | case REQ_SCROLL_PAGE_UP: | |
a28bcc22 | 1010 | scroll_view(view, request); |
b801d8b2 JF |
1011 | break; |
1012 | ||
4a2909a7 | 1013 | case REQ_VIEW_MAIN: |
4a2909a7 | 1014 | case REQ_VIEW_DIFF: |
2e8488b4 JF |
1015 | case REQ_VIEW_LOG: |
1016 | case REQ_VIEW_HELP: | |
6b161b31 | 1017 | switch_view(view, request, FALSE, FALSE); |
b801d8b2 JF |
1018 | break; |
1019 | ||
6b161b31 JF |
1020 | case REQ_ENTER: |
1021 | return view->ops->enter(view); | |
1022 | ||
4a2909a7 | 1023 | case REQ_TOGGLE_LINE_NUMBERS: |
b76c2afc | 1024 | opt_line_number = !opt_line_number; |
a28bcc22 | 1025 | redraw_view(view); |
b801d8b2 JF |
1026 | break; |
1027 | ||
4a2909a7 | 1028 | case REQ_STOP_LOADING: |
2e8488b4 JF |
1029 | foreach_view (view, i) |
1030 | if (view->pipe) | |
b801d8b2 | 1031 | end_update(view); |
b801d8b2 JF |
1032 | break; |
1033 | ||
4a2909a7 | 1034 | case REQ_SHOW_VERSION: |
2e8488b4 | 1035 | report("Version: %s", VERSION); |
b801d8b2 JF |
1036 | return TRUE; |
1037 | ||
4a2909a7 JF |
1038 | case REQ_SCREEN_REDRAW: |
1039 | redraw_view(view); | |
1040 | break; | |
1041 | ||
1042 | case REQ_SCREEN_UPDATE: | |
b801d8b2 JF |
1043 | doupdate(); |
1044 | return TRUE; | |
1045 | ||
1046 | case REQ_QUIT: | |
1047 | return FALSE; | |
1048 | ||
1049 | default: | |
2e8488b4 | 1050 | /* An unknown key will show most commonly used commands. */ |
a28bcc22 | 1051 | report("%s", HELP); |
b801d8b2 JF |
1052 | return TRUE; |
1053 | } | |
1054 | ||
1055 | return TRUE; | |
1056 | } | |
1057 | ||
1058 | ||
1059 | /* | |
6b161b31 | 1060 | * View backend handlers |
b801d8b2 JF |
1061 | */ |
1062 | ||
6b161b31 | 1063 | static bool |
22f66b0a | 1064 | pager_draw(struct view *view, unsigned int lineno) |
b801d8b2 | 1065 | { |
78c70acd | 1066 | enum line_type type; |
b801d8b2 | 1067 | char *line; |
4c6fabc2 | 1068 | int linelen; |
78c70acd | 1069 | int attr; |
b801d8b2 | 1070 | |
fd85fef1 JF |
1071 | if (view->offset + lineno >= view->lines) |
1072 | return FALSE; | |
1073 | ||
b801d8b2 | 1074 | line = view->line[view->offset + lineno]; |
78c70acd | 1075 | type = get_line_type(line); |
b801d8b2 | 1076 | |
fd85fef1 | 1077 | if (view->offset + lineno == view->lineno) { |
78c70acd | 1078 | if (type == LINE_COMMIT) |
2e8488b4 | 1079 | string_copy(ref_commit, line + 7); |
78c70acd | 1080 | type = LINE_CURSOR; |
fd85fef1 JF |
1081 | } |
1082 | ||
78c70acd | 1083 | attr = get_line_attr(type); |
b801d8b2 | 1084 | wattrset(view->win, attr); |
b76c2afc | 1085 | |
4c6fabc2 JF |
1086 | linelen = strlen(line); |
1087 | linelen = MIN(linelen, view->width); | |
1088 | ||
b76c2afc | 1089 | if (opt_line_number) { |
82e78006 | 1090 | unsigned int real_lineno = view->offset + lineno + 1; |
a28bcc22 | 1091 | int col = 0; |
82e78006 | 1092 | |
2e8488b4 | 1093 | if (real_lineno == 1 || (real_lineno % opt_num_interval) == 0) |
82e78006 | 1094 | mvwprintw(view->win, lineno, 0, "%4d: ", real_lineno); |
4c6fabc2 | 1095 | else |
82e78006 | 1096 | mvwaddstr(view->win, lineno, 0, " : "); |
4c6fabc2 | 1097 | |
b76c2afc JF |
1098 | while (line) { |
1099 | if (*line == '\t') { | |
82e78006 JF |
1100 | waddnstr(view->win, " ", 8 - (col % 8)); |
1101 | col += 8 - (col % 8); | |
b76c2afc | 1102 | line++; |
82e78006 | 1103 | |
b76c2afc JF |
1104 | } else { |
1105 | char *tab = strchr(line, '\t'); | |
1106 | ||
1107 | if (tab) | |
1108 | waddnstr(view->win, line, tab - line); | |
1109 | else | |
1110 | waddstr(view->win, line); | |
82e78006 | 1111 | col += tab - line; |
b76c2afc JF |
1112 | line = tab; |
1113 | } | |
1114 | } | |
1115 | waddstr(view->win, line); | |
1116 | ||
1117 | } else { | |
2e8488b4 JF |
1118 | #if 0 |
1119 | /* NOTE: Code for only highlighting the text on the cursor line. | |
1120 | * Kept since I've not yet decided whether to highlight the | |
1121 | * entire line or not. --fonseca */ | |
b76c2afc JF |
1122 | /* No empty lines makes cursor drawing and clearing implicit. */ |
1123 | if (!*line) | |
4c6fabc2 | 1124 | line = " ", linelen = 1; |
2e8488b4 | 1125 | #endif |
4c6fabc2 | 1126 | mvwaddnstr(view->win, lineno, 0, line, linelen); |
b76c2afc | 1127 | } |
b801d8b2 | 1128 | |
2e8488b4 JF |
1129 | /* Paint the rest of the line if it's the cursor line. */ |
1130 | if (type == LINE_CURSOR) | |
1131 | wchgat(view->win, -1, 0, type, NULL); | |
1132 | ||
b801d8b2 JF |
1133 | return TRUE; |
1134 | } | |
1135 | ||
6b161b31 | 1136 | static bool |
22f66b0a JF |
1137 | pager_read(struct view *view, char *line) |
1138 | { | |
1139 | view->line[view->lines] = strdup(line); | |
1140 | if (!view->line[view->lines]) | |
1141 | return FALSE; | |
1142 | ||
1143 | view->lines++; | |
1144 | return TRUE; | |
1145 | } | |
1146 | ||
6b161b31 JF |
1147 | static bool |
1148 | pager_enter(struct view *view) | |
1149 | { | |
1150 | char *line = view->line[view->lineno]; | |
1151 | ||
1152 | if (get_line_type(line) == LINE_COMMIT) { | |
1153 | report("FIXME: Open commit"); | |
1154 | } | |
1155 | ||
1156 | return TRUE; | |
1157 | } | |
1158 | ||
1159 | ||
1160 | static struct view_ops pager_ops = { | |
1161 | pager_draw, | |
1162 | pager_read, | |
1163 | pager_enter, | |
1164 | }; | |
1165 | ||
1166 | static bool | |
22f66b0a JF |
1167 | main_draw(struct view *view, unsigned int lineno) |
1168 | { | |
2e8488b4 | 1169 | char buf[DATE_COLS + 1]; |
22f66b0a | 1170 | struct commit *commit; |
78c70acd | 1171 | enum line_type type; |
b76c2afc JF |
1172 | int cols = 0; |
1173 | size_t timelen; | |
22f66b0a JF |
1174 | |
1175 | if (view->offset + lineno >= view->lines) | |
1176 | return FALSE; | |
1177 | ||
1178 | commit = view->line[view->offset + lineno]; | |
4c6fabc2 JF |
1179 | if (!*commit->author) |
1180 | return FALSE; | |
22f66b0a | 1181 | |
22f66b0a | 1182 | if (view->offset + lineno == view->lineno) { |
2e8488b4 | 1183 | string_copy(ref_commit, commit->id); |
78c70acd JF |
1184 | type = LINE_CURSOR; |
1185 | } else { | |
b76c2afc JF |
1186 | type = LINE_MAIN_COMMIT; |
1187 | } | |
1188 | ||
1189 | wmove(view->win, lineno, cols); | |
1190 | wattrset(view->win, get_line_attr(LINE_MAIN_DATE)); | |
1191 | ||
4c6fabc2 | 1192 | timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time); |
b76c2afc | 1193 | waddnstr(view->win, buf, timelen); |
4c6fabc2 | 1194 | waddstr(view->win, " "); |
b76c2afc | 1195 | |
4c6fabc2 | 1196 | cols += DATE_COLS; |
b76c2afc JF |
1197 | wmove(view->win, lineno, cols); |
1198 | wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR)); | |
1199 | ||
1200 | if (strlen(commit->author) > 19) { | |
1201 | waddnstr(view->win, commit->author, 18); | |
1202 | wattrset(view->win, get_line_attr(LINE_MAIN_DELIM)); | |
1203 | waddch(view->win, '~'); | |
1204 | } else { | |
1205 | waddstr(view->win, commit->author); | |
22f66b0a JF |
1206 | } |
1207 | ||
b76c2afc JF |
1208 | cols += 20; |
1209 | wattrset(view->win, A_NORMAL); | |
1210 | mvwaddch(view->win, lineno, cols, ACS_LTEE); | |
78c70acd | 1211 | wattrset(view->win, get_line_attr(type)); |
b76c2afc | 1212 | mvwaddstr(view->win, lineno, cols + 2, commit->title); |
22f66b0a JF |
1213 | wattrset(view->win, A_NORMAL); |
1214 | ||
1215 | return TRUE; | |
1216 | } | |
1217 | ||
4c6fabc2 | 1218 | /* Reads git log --pretty=raw output and parses it into the commit struct. */ |
6b161b31 | 1219 | static bool |
22f66b0a JF |
1220 | main_read(struct view *view, char *line) |
1221 | { | |
78c70acd JF |
1222 | enum line_type type = get_line_type(line); |
1223 | struct commit *commit; | |
22f66b0a | 1224 | |
78c70acd JF |
1225 | switch (type) { |
1226 | case LINE_COMMIT: | |
22f66b0a JF |
1227 | commit = calloc(1, sizeof(struct commit)); |
1228 | if (!commit) | |
1229 | return FALSE; | |
1230 | ||
4c6fabc2 | 1231 | line += STRING_SIZE("commit "); |
b76c2afc | 1232 | |
22f66b0a | 1233 | view->line[view->lines++] = commit; |
82e78006 | 1234 | string_copy(commit->id, line); |
78c70acd | 1235 | break; |
22f66b0a | 1236 | |
b76c2afc JF |
1237 | case LINE_AUTHOR_IDENT: |
1238 | { | |
4c6fabc2 | 1239 | char *ident = line + STRING_SIZE("author "); |
b76c2afc JF |
1240 | char *end = strchr(ident, '<'); |
1241 | ||
1242 | if (end) { | |
1243 | for (; end > ident && isspace(end[-1]); end--) ; | |
1244 | *end = 0; | |
1245 | } | |
1246 | ||
1247 | commit = view->line[view->lines - 1]; | |
82e78006 | 1248 | string_copy(commit->author, ident); |
b76c2afc | 1249 | |
4c6fabc2 | 1250 | /* Parse epoch and timezone */ |
b76c2afc JF |
1251 | if (end) { |
1252 | char *secs = strchr(end + 1, '>'); | |
1253 | char *zone; | |
1254 | time_t time; | |
1255 | ||
1256 | if (!secs || secs[1] != ' ') | |
1257 | break; | |
1258 | ||
1259 | secs += 2; | |
1260 | time = (time_t) atol(secs); | |
1261 | zone = strchr(secs, ' '); | |
4c6fabc2 | 1262 | if (zone && strlen(zone) == STRING_SIZE(" +0700")) { |
b76c2afc JF |
1263 | long tz; |
1264 | ||
1265 | zone++; | |
1266 | tz = ('0' - zone[1]) * 60 * 60 * 10; | |
1267 | tz += ('0' - zone[2]) * 60 * 60; | |
1268 | tz += ('0' - zone[3]) * 60; | |
1269 | tz += ('0' - zone[4]) * 60; | |
1270 | ||
1271 | if (zone[0] == '-') | |
1272 | tz = -tz; | |
1273 | ||
1274 | time -= tz; | |
1275 | } | |
1276 | gmtime_r(&time, &commit->time); | |
1277 | } | |
1278 | break; | |
1279 | } | |
78c70acd | 1280 | default: |
2e8488b4 JF |
1281 | /* We should only ever end up here if there has already been a |
1282 | * commit line, however, be safe. */ | |
1283 | if (view->lines == 0) | |
1284 | break; | |
1285 | ||
1286 | /* Fill in the commit title if it has not already been set. */ | |
78c70acd | 1287 | commit = view->line[view->lines - 1]; |
2e8488b4 JF |
1288 | if (commit->title[0]) |
1289 | break; | |
1290 | ||
1291 | /* Require titles to start with a non-space character at the | |
1292 | * offset used by git log. */ | |
1293 | if (strncmp(line, " ", 4) || | |
82e78006 JF |
1294 | isspace(line[5])) |
1295 | break; | |
1296 | ||
1297 | string_copy(commit->title, line + 4); | |
22f66b0a JF |
1298 | } |
1299 | ||
1300 | return TRUE; | |
1301 | } | |
1302 | ||
6b161b31 JF |
1303 | static bool |
1304 | main_enter(struct view *view) | |
b801d8b2 | 1305 | { |
6b161b31 JF |
1306 | switch_view(view, REQ_VIEW_DIFF, FALSE, TRUE); |
1307 | return TRUE; | |
b801d8b2 JF |
1308 | } |
1309 | ||
6b161b31 JF |
1310 | static struct view_ops main_ops = { |
1311 | main_draw, | |
1312 | main_read, | |
1313 | main_enter, | |
1314 | }; | |
2e8488b4 | 1315 | |
6b161b31 JF |
1316 | /* |
1317 | * Status management | |
1318 | */ | |
2e8488b4 | 1319 | |
6b161b31 JF |
1320 | /* The status window is used for polling keystrokes. */ |
1321 | static WINDOW *status_win; | |
4a2909a7 | 1322 | |
2e8488b4 | 1323 | /* Update status and title window. */ |
4a2909a7 JF |
1324 | static void |
1325 | report(const char *msg, ...) | |
1326 | { | |
1327 | va_list args; | |
b76c2afc | 1328 | |
b801d8b2 JF |
1329 | va_start(args, msg); |
1330 | ||
2e8488b4 JF |
1331 | /* Update the title window first, so the cursor ends up in the status |
1332 | * window. */ | |
6b161b31 | 1333 | update_view_title(display[current_view]); |
4a2909a7 | 1334 | |
b801d8b2 JF |
1335 | werase(status_win); |
1336 | wmove(status_win, 0, 0); | |
b801d8b2 JF |
1337 | vwprintw(status_win, msg, args); |
1338 | wrefresh(status_win); | |
1339 | ||
1340 | va_end(args); | |
b801d8b2 JF |
1341 | } |
1342 | ||
6b161b31 JF |
1343 | /* Controls when nodelay should be in effect when polling user input. */ |
1344 | static void | |
1345 | set_nonblocking_input(int loading) | |
b801d8b2 | 1346 | { |
6b161b31 JF |
1347 | /* The number of loading views. */ |
1348 | static unsigned int nloading; | |
b801d8b2 | 1349 | |
6b161b31 JF |
1350 | if (loading == TRUE) { |
1351 | if (nloading++ == 0) | |
1352 | nodelay(status_win, TRUE); | |
1353 | return; | |
82e78006 | 1354 | } |
b76c2afc | 1355 | |
6b161b31 JF |
1356 | if (nloading-- == 1) |
1357 | nodelay(status_win, FALSE); | |
1358 | } | |
1359 | ||
1360 | static void | |
1361 | init_display(void) | |
1362 | { | |
1363 | int x, y; | |
b76c2afc | 1364 | |
2e8488b4 JF |
1365 | initscr(); /* Initialize the curses library */ |
1366 | nonl(); /* Tell curses not to do NL->CR/NL on output */ | |
1367 | cbreak(); /* Take input chars one at a time, no wait for \n */ | |
1368 | noecho(); /* Don't echo input */ | |
b801d8b2 | 1369 | leaveok(stdscr, TRUE); |
b801d8b2 JF |
1370 | |
1371 | if (has_colors()) | |
1372 | init_colors(); | |
1373 | ||
1374 | getmaxyx(stdscr, y, x); | |
1375 | status_win = newwin(1, 0, y - 1, 0); | |
1376 | if (!status_win) | |
1377 | die("Failed to create status window"); | |
1378 | ||
1379 | /* Enable keyboard mapping */ | |
1380 | keypad(status_win, TRUE); | |
78c70acd | 1381 | wbkgdset(status_win, get_line_attr(LINE_STATUS)); |
6b161b31 JF |
1382 | } |
1383 | ||
1384 | /* | |
1385 | * Main | |
1386 | */ | |
1387 | ||
1388 | static void | |
1389 | quit(int sig) | |
1390 | { | |
1391 | if (status_win) | |
1392 | delwin(status_win); | |
1393 | endwin(); | |
1394 | ||
1395 | /* FIXME: Shutdown gracefully. */ | |
1396 | ||
1397 | exit(0); | |
1398 | } | |
1399 | ||
1400 | static void die(const char *err, ...) | |
1401 | { | |
1402 | va_list args; | |
1403 | ||
1404 | endwin(); | |
1405 | ||
1406 | va_start(args, err); | |
1407 | fputs("tig: ", stderr); | |
1408 | vfprintf(stderr, err, args); | |
1409 | fputs("\n", stderr); | |
1410 | va_end(args); | |
1411 | ||
1412 | exit(1); | |
1413 | } | |
1414 | ||
1415 | int | |
1416 | main(int argc, char *argv[]) | |
1417 | { | |
1418 | enum request request; | |
1419 | int git_cmd; | |
1420 | ||
1421 | signal(SIGINT, quit); | |
1422 | ||
1423 | git_cmd = parse_options(argc, argv); | |
1424 | if (git_cmd < 0) | |
1425 | return 0; | |
1426 | ||
1427 | if (git_cmd < argc) { | |
1428 | die("FIXME: Handle git diff/log options"); | |
1429 | } | |
1430 | ||
1431 | request = opt_request; | |
1432 | ||
1433 | init_display(); | |
b801d8b2 JF |
1434 | |
1435 | while (view_driver(display[current_view], request)) { | |
1436 | struct view *view; | |
6b161b31 | 1437 | int key; |
b801d8b2 JF |
1438 | int i; |
1439 | ||
6b161b31 JF |
1440 | foreach_view (view, i) |
1441 | update_view(view); | |
b801d8b2 JF |
1442 | |
1443 | /* Refresh, accept single keystroke of input */ | |
6b161b31 JF |
1444 | key = wgetch(status_win); |
1445 | request = get_request(key); | |
b801d8b2 JF |
1446 | } |
1447 | ||
1448 | quit(0); | |
1449 | ||
1450 | return 0; | |
1451 | } | |
1452 | ||
1453 | /** | |
4c6fabc2 JF |
1454 | * TODO |
1455 | * ---- | |
1456 | * Features that should be explored. | |
1457 | * | |
82e78006 JF |
1458 | * - Dynamic scaling of line number indentation. |
1459 | * | |
1460 | * - Proper command line handling; ability to take the command that should be | |
1461 | * shown. Example: | |
4c6fabc2 JF |
1462 | * |
1463 | * $ tig log -p | |
1464 | * | |
82e78006 JF |
1465 | * - Internal command line (exmode-inspired) which allows to specify what git |
1466 | * log or git diff command to run. Example: | |
4c6fabc2 JF |
1467 | * |
1468 | * :log -p | |
1469 | * | |
1470 | * - Proper resizing support. I am yet to figure out whether catching SIGWINCH | |
1471 | * is preferred over using ncurses' built-in support for resizing. | |
1472 | * | |
1473 | * - Locale support. | |
1474 | * | |
b801d8b2 JF |
1475 | * COPYRIGHT |
1476 | * --------- | |
4a2909a7 | 1477 | * Copyright (c) Jonas Fonseca <fonseca@diku.dk>, 2006 |
b801d8b2 JF |
1478 | * |
1479 | * This program is free software; you can redistribute it and/or modify | |
1480 | * it under the terms of the GNU General Public License as published by | |
1481 | * the Free Software Foundation; either version 2 of the License, or | |
1482 | * (at your option) any later version. | |
1483 | * | |
1484 | * SEE ALSO | |
1485 | * -------- | |
4c6fabc2 | 1486 | * [verse] |
b801d8b2 JF |
1487 | * link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)], |
1488 | * link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)] | |
4c6fabc2 JF |
1489 | * gitk(1): git repository browser written using tcl/tk, |
1490 | * gitview(1): git repository browser written using python/gtk. | |
b801d8b2 | 1491 | **/ |