Commit | Line | Data |
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4a2909a7 | 1 | /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk> |
192d9a60 JF |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License version 2 as | |
5 | * published by the Free Software Foundation. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | */ | |
b801d8b2 JF |
12 | /** |
13 | * TIG(1) | |
14 | * ====== | |
15 | * | |
16 | * NAME | |
17 | * ---- | |
18 | * tig - text-mode interface for git | |
19 | * | |
20 | * SYNOPSIS | |
21 | * -------- | |
22 | * [verse] | |
03a93dbb JF |
23 | * tig [options] |
24 | * tig [options] [--] [git log options] | |
b76c2afc JF |
25 | * tig [options] log [git log options] |
26 | * tig [options] diff [git diff options] | |
8855ada4 JF |
27 | * tig [options] show [git show options] |
28 | * tig [options] < [git command output] | |
b801d8b2 JF |
29 | * |
30 | * DESCRIPTION | |
31 | * ----------- | |
6706b2ba JF |
32 | * Browse changes in a git repository. Additionally, tig(1) can also act |
33 | * as a pager for output of various git commands. | |
34 | * | |
57bdf034 | 35 | * When browsing repositories, tig(1) uses the underlying git commands |
468876c9 JF |
36 | * to present the user with various views, such as summarized commit log |
37 | * and showing the commit with the log message, diffstat, and the diff. | |
6706b2ba | 38 | * |
468876c9 JF |
39 | * Using tig(1) as a pager, it will display input from stdin and try |
40 | * to colorize it. | |
b801d8b2 JF |
41 | **/ |
42 | ||
b76c2afc | 43 | #ifndef VERSION |
8c11094f | 44 | #define VERSION "tig-0.3" |
b76c2afc JF |
45 | #endif |
46 | ||
8855ada4 JF |
47 | #ifndef DEBUG |
48 | #define NDEBUG | |
49 | #endif | |
50 | ||
22f66b0a | 51 | #include <assert.h> |
4c6fabc2 | 52 | #include <errno.h> |
22f66b0a JF |
53 | #include <ctype.h> |
54 | #include <signal.h> | |
b801d8b2 | 55 | #include <stdarg.h> |
b801d8b2 | 56 | #include <stdio.h> |
22f66b0a | 57 | #include <stdlib.h> |
b801d8b2 | 58 | #include <string.h> |
6908bdbd | 59 | #include <unistd.h> |
b76c2afc | 60 | #include <time.h> |
b801d8b2 JF |
61 | |
62 | #include <curses.h> | |
b801d8b2 JF |
63 | |
64 | static void die(const char *err, ...); | |
65 | static void report(const char *msg, ...); | |
d0cea5f9 | 66 | static int read_properties(const char *cmd, int separator, int (*read)(char *, int, char *, int)); |
1ba2ae4b | 67 | static void set_nonblocking_input(bool loading); |
10e290ee | 68 | static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed); |
6b161b31 JF |
69 | |
70 | #define ABS(x) ((x) >= 0 ? (x) : -(x)) | |
71 | #define MIN(x, y) ((x) < (y) ? (x) : (y)) | |
72 | ||
73 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) | |
74 | #define STRING_SIZE(x) (sizeof(x) - 1) | |
b76c2afc | 75 | |
2e8488b4 JF |
76 | #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */ |
77 | #define SIZEOF_CMD 1024 /* Size of command buffer. */ | |
b801d8b2 | 78 | |
82e78006 JF |
79 | /* This color name can be used to refer to the default term colors. */ |
80 | #define COLOR_DEFAULT (-1) | |
78c70acd | 81 | |
67e48ac5 | 82 | #define TIG_HELP "(d)iff, (l)og, (m)ain, (q)uit, (h)elp" |
468876c9 | 83 | |
82e78006 | 84 | /* The format and size of the date column in the main view. */ |
4c6fabc2 | 85 | #define DATE_FORMAT "%Y-%m-%d %H:%M" |
6b161b31 | 86 | #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ") |
4c6fabc2 | 87 | |
10e290ee JF |
88 | #define AUTHOR_COLS 20 |
89 | ||
a28bcc22 | 90 | /* The default interval between line numbers. */ |
4a2909a7 | 91 | #define NUMBER_INTERVAL 1 |
82e78006 | 92 | |
6706b2ba JF |
93 | #define TABSIZE 8 |
94 | ||
a28bcc22 JF |
95 | #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3) |
96 | ||
8855ada4 | 97 | /* Some ascii-shorthands fitted into the ncurses namespace. */ |
a28bcc22 JF |
98 | #define KEY_TAB '\t' |
99 | #define KEY_RETURN '\r' | |
4a2909a7 JF |
100 | #define KEY_ESC 27 |
101 | ||
6706b2ba | 102 | |
a28bcc22 | 103 | /* User action requests. */ |
4a2909a7 | 104 | enum request { |
a28bcc22 JF |
105 | /* Offset all requests to avoid conflicts with ncurses getch values. */ |
106 | REQ_OFFSET = KEY_MAX + 1, | |
107 | ||
4a2909a7 | 108 | /* XXX: Keep the view request first and in sync with views[]. */ |
2e8488b4 | 109 | REQ_VIEW_MAIN, |
4a2909a7 JF |
110 | REQ_VIEW_DIFF, |
111 | REQ_VIEW_LOG, | |
2e8488b4 | 112 | REQ_VIEW_HELP, |
6908bdbd | 113 | REQ_VIEW_PAGER, |
4a2909a7 | 114 | |
6b161b31 | 115 | REQ_ENTER, |
03a93dbb JF |
116 | REQ_QUIT, |
117 | REQ_PROMPT, | |
4a2909a7 | 118 | REQ_SCREEN_REDRAW, |
fac7db6c | 119 | REQ_SCREEN_RESIZE, |
4a2909a7 | 120 | REQ_SCREEN_UPDATE, |
03a93dbb JF |
121 | REQ_SHOW_VERSION, |
122 | REQ_STOP_LOADING, | |
4a2909a7 | 123 | REQ_TOGGLE_LINE_NUMBERS, |
03a93dbb | 124 | REQ_VIEW_NEXT, |
4f9b667a | 125 | REQ_VIEW_CLOSE, |
b3a54cba JF |
126 | REQ_NEXT, |
127 | REQ_PREVIOUS, | |
4a2909a7 JF |
128 | |
129 | REQ_MOVE_UP, | |
130 | REQ_MOVE_DOWN, | |
131 | REQ_MOVE_PAGE_UP, | |
132 | REQ_MOVE_PAGE_DOWN, | |
133 | REQ_MOVE_FIRST_LINE, | |
134 | REQ_MOVE_LAST_LINE, | |
135 | ||
136 | REQ_SCROLL_LINE_UP, | |
137 | REQ_SCROLL_LINE_DOWN, | |
138 | REQ_SCROLL_PAGE_UP, | |
139 | REQ_SCROLL_PAGE_DOWN, | |
140 | }; | |
141 | ||
c34d9c9f | 142 | struct ref { |
468876c9 JF |
143 | char *name; /* Ref name; tag or head names are shortened. */ |
144 | char id[41]; /* Commit SHA1 ID */ | |
145 | unsigned int tag:1; /* Is it a tag? */ | |
146 | unsigned int next:1; /* For ref lists: are there more refs? */ | |
c34d9c9f JF |
147 | }; |
148 | ||
ff26aa29 | 149 | static struct ref **get_refs(char *id); |
4c6fabc2 | 150 | |
6706b2ba | 151 | |
03a93dbb JF |
152 | /* |
153 | * String helpers | |
154 | */ | |
78c70acd | 155 | |
82e78006 | 156 | static inline void |
4685845e | 157 | string_ncopy(char *dst, const char *src, int dstlen) |
82e78006 JF |
158 | { |
159 | strncpy(dst, src, dstlen - 1); | |
160 | dst[dstlen - 1] = 0; | |
03a93dbb | 161 | |
82e78006 JF |
162 | } |
163 | ||
164 | /* Shorthand for safely copying into a fixed buffer. */ | |
165 | #define string_copy(dst, src) \ | |
166 | string_ncopy(dst, src, sizeof(dst)) | |
167 | ||
6706b2ba | 168 | |
03a93dbb JF |
169 | /* Shell quoting |
170 | * | |
171 | * NOTE: The following is a slightly modified copy of the git project's shell | |
172 | * quoting routines found in the quote.c file. | |
173 | * | |
174 | * Help to copy the thing properly quoted for the shell safety. any single | |
175 | * quote is replaced with '\'', any exclamation point is replaced with '\!', | |
176 | * and the whole thing is enclosed in a | |
177 | * | |
178 | * E.g. | |
179 | * original sq_quote result | |
180 | * name ==> name ==> 'name' | |
181 | * a b ==> a b ==> 'a b' | |
182 | * a'b ==> a'\''b ==> 'a'\''b' | |
183 | * a!b ==> a'\!'b ==> 'a'\!'b' | |
184 | */ | |
185 | ||
186 | static size_t | |
187 | sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src) | |
188 | { | |
189 | char c; | |
190 | ||
a9274b95 | 191 | #define BUFPUT(x) do { if (bufsize < SIZEOF_CMD) buf[bufsize++] = (x); } while (0) |
03a93dbb JF |
192 | |
193 | BUFPUT('\''); | |
194 | while ((c = *src++)) { | |
195 | if (c == '\'' || c == '!') { | |
196 | BUFPUT('\''); | |
197 | BUFPUT('\\'); | |
198 | BUFPUT(c); | |
199 | BUFPUT('\''); | |
200 | } else { | |
201 | BUFPUT(c); | |
202 | } | |
203 | } | |
204 | BUFPUT('\''); | |
205 | ||
206 | return bufsize; | |
207 | } | |
208 | ||
82e78006 | 209 | |
b76c2afc JF |
210 | /** |
211 | * OPTIONS | |
212 | * ------- | |
213 | **/ | |
214 | ||
4b8c01a3 JF |
215 | static const char usage[] = |
216 | VERSION " (" __DATE__ ")\n" | |
217 | "\n" | |
218 | "Usage: tig [options]\n" | |
219 | " or: tig [options] [--] [git log options]\n" | |
220 | " or: tig [options] log [git log options]\n" | |
221 | " or: tig [options] diff [git diff options]\n" | |
222 | " or: tig [options] show [git show options]\n" | |
223 | " or: tig [options] < [git command output]\n" | |
224 | "\n" | |
225 | "Options:\n" | |
226 | " -l Start up in log view\n" | |
227 | " -d Start up in diff view\n" | |
228 | " -n[I], --line-number[=I] Show line numbers with given interval\n" | |
229 | " -t[N], --tab-size[=N] Set number of spaces for tab expansion\n" | |
230 | " -- Mark end of tig options\n" | |
231 | " -v, --version Show version and exit\n" | |
232 | " -h, --help Show help message and exit\n"; | |
233 | ||
6706b2ba JF |
234 | /* Option and state variables. */ |
235 | static bool opt_line_number = FALSE; | |
2e8488b4 | 236 | static int opt_num_interval = NUMBER_INTERVAL; |
6706b2ba | 237 | static int opt_tab_size = TABSIZE; |
6b161b31 | 238 | static enum request opt_request = REQ_VIEW_MAIN; |
03a93dbb | 239 | static char opt_cmd[SIZEOF_CMD] = ""; |
9989bf60 JF |
240 | static char opt_encoding[20] = ""; |
241 | static bool opt_utf8 = TRUE; | |
6908bdbd | 242 | static FILE *opt_pipe = NULL; |
b76c2afc | 243 | |
b76c2afc | 244 | /* Returns the index of log or diff command or -1 to exit. */ |
8855ada4 | 245 | static bool |
b76c2afc JF |
246 | parse_options(int argc, char *argv[]) |
247 | { | |
248 | int i; | |
249 | ||
250 | for (i = 1; i < argc; i++) { | |
251 | char *opt = argv[i]; | |
252 | ||
253 | /** | |
b76c2afc | 254 | * -l:: |
1ba2ae4b | 255 | * Start up in log view using the internal log command. |
b76c2afc | 256 | **/ |
6b161b31 | 257 | if (!strcmp(opt, "-l")) { |
4a2909a7 | 258 | opt_request = REQ_VIEW_LOG; |
6b161b31 JF |
259 | continue; |
260 | } | |
b76c2afc JF |
261 | |
262 | /** | |
263 | * -d:: | |
1ba2ae4b | 264 | * Start up in diff view using the internal diff command. |
b76c2afc | 265 | **/ |
6b161b31 | 266 | if (!strcmp(opt, "-d")) { |
4a2909a7 | 267 | opt_request = REQ_VIEW_DIFF; |
6b161b31 JF |
268 | continue; |
269 | } | |
b76c2afc JF |
270 | |
271 | /** | |
2e8488b4 | 272 | * -n[INTERVAL], --line-number[=INTERVAL]:: |
b76c2afc | 273 | * Prefix line numbers in log and diff view. |
2e8488b4 | 274 | * Optionally, with interval different than each line. |
b76c2afc | 275 | **/ |
6b161b31 | 276 | if (!strncmp(opt, "-n", 2) || |
8855ada4 | 277 | !strncmp(opt, "--line-number", 13)) { |
2e8488b4 JF |
278 | char *num = opt; |
279 | ||
280 | if (opt[1] == 'n') { | |
281 | num = opt + 2; | |
282 | ||
283 | } else if (opt[STRING_SIZE("--line-number")] == '=') { | |
284 | num = opt + STRING_SIZE("--line-number="); | |
285 | } | |
286 | ||
287 | if (isdigit(*num)) | |
288 | opt_num_interval = atoi(num); | |
289 | ||
6b161b31 JF |
290 | opt_line_number = TRUE; |
291 | continue; | |
292 | } | |
b76c2afc JF |
293 | |
294 | /** | |
6706b2ba JF |
295 | * -t[NSPACES], --tab-size[=NSPACES]:: |
296 | * Set the number of spaces tabs should be expanded to. | |
297 | **/ | |
298 | if (!strncmp(opt, "-t", 2) || | |
299 | !strncmp(opt, "--tab-size", 10)) { | |
300 | char *num = opt; | |
301 | ||
302 | if (opt[1] == 't') { | |
303 | num = opt + 2; | |
304 | ||
305 | } else if (opt[STRING_SIZE("--tab-size")] == '=') { | |
306 | num = opt + STRING_SIZE("--tab-size="); | |
307 | } | |
308 | ||
309 | if (isdigit(*num)) | |
310 | opt_tab_size = MIN(atoi(num), TABSIZE); | |
311 | continue; | |
312 | } | |
313 | ||
314 | /** | |
b76c2afc JF |
315 | * -v, --version:: |
316 | * Show version and exit. | |
317 | **/ | |
6b161b31 | 318 | if (!strcmp(opt, "-v") || |
8855ada4 | 319 | !strcmp(opt, "--version")) { |
b76c2afc | 320 | printf("tig version %s\n", VERSION); |
8855ada4 | 321 | return FALSE; |
6b161b31 | 322 | } |
b76c2afc JF |
323 | |
324 | /** | |
4b8c01a3 JF |
325 | * -h, --help:: |
326 | * Show help message and exit. | |
327 | **/ | |
328 | if (!strcmp(opt, "-h") || | |
329 | !strcmp(opt, "--help")) { | |
330 | printf(usage); | |
331 | return FALSE; | |
332 | } | |
333 | ||
334 | /** | |
03a93dbb | 335 | * \--:: |
0721c53a | 336 | * End of tig(1) options. Useful when specifying command |
d44f34bf | 337 | * options for the main view. Example: |
03a93dbb | 338 | * |
889cb462 | 339 | * $ tig -- --since=1.month |
b76c2afc | 340 | **/ |
6908bdbd JF |
341 | if (!strcmp(opt, "--")) { |
342 | i++; | |
343 | break; | |
344 | } | |
03a93dbb | 345 | |
8855ada4 | 346 | /** |
d44f34bf | 347 | * log [git log options]:: |
8855ada4 JF |
348 | * Open log view using the given git log options. |
349 | * | |
d44f34bf | 350 | * diff [git diff options]:: |
8855ada4 JF |
351 | * Open diff view using the given git diff options. |
352 | * | |
d44f34bf | 353 | * show [git show options]:: |
8855ada4 JF |
354 | * Open diff view using the given git show options. |
355 | **/ | |
356 | if (!strcmp(opt, "log") || | |
357 | !strcmp(opt, "diff") || | |
358 | !strcmp(opt, "show")) { | |
359 | opt_request = opt[0] == 'l' | |
360 | ? REQ_VIEW_LOG : REQ_VIEW_DIFF; | |
361 | break; | |
362 | } | |
363 | ||
d44f34bf | 364 | /** |
57bdf034 | 365 | * [git log options]:: |
d44f34bf JF |
366 | * tig(1) will stop the option parsing when the first |
367 | * command line parameter not starting with "-" is | |
57bdf034 JF |
368 | * encountered. All options including this one will be |
369 | * passed to git log when loading the main view. | |
370 | * This makes it possible to say: | |
889cb462 | 371 | * |
03a93dbb | 372 | * $ tig tag-1.0..HEAD |
d44f34bf | 373 | **/ |
03a93dbb | 374 | if (opt[0] && opt[0] != '-') |
6908bdbd | 375 | break; |
6b161b31 JF |
376 | |
377 | die("unknown command '%s'", opt); | |
b76c2afc JF |
378 | } |
379 | ||
6908bdbd | 380 | if (!isatty(STDIN_FILENO)) { |
8855ada4 JF |
381 | /** |
382 | * Pager mode | |
383 | * ~~~~~~~~~~ | |
384 | * If stdin is a pipe, any log or diff options will be ignored and the | |
385 | * pager view will be opened loading data from stdin. The pager mode | |
386 | * can be used for colorizing output from various git commands. | |
387 | * | |
388 | * Example on how to colorize the output of git-show(1): | |
389 | * | |
390 | * $ git show | tig | |
391 | **/ | |
6908bdbd JF |
392 | opt_request = REQ_VIEW_PAGER; |
393 | opt_pipe = stdin; | |
394 | ||
395 | } else if (i < argc) { | |
396 | size_t buf_size; | |
397 | ||
8855ada4 JF |
398 | /** |
399 | * Git command options | |
400 | * ~~~~~~~~~~~~~~~~~~~ | |
8855ada4 JF |
401 | * All git command options specified on the command line will |
402 | * be passed to the given command and all will be shell quoted | |
468876c9 | 403 | * before they are passed to the shell. |
8855ada4 | 404 | * |
468876c9 JF |
405 | * NOTE: If you specify options for the main view, you should |
406 | * not use the `--pretty` option as this option will be set | |
407 | * automatically to the format expected by the main view. | |
8855ada4 JF |
408 | * |
409 | * Example on how to open the log view and show both author and | |
410 | * committer information: | |
411 | * | |
412 | * $ tig log --pretty=fuller | |
468876c9 | 413 | * |
0721c53a JF |
414 | * See the <<refspec, "Specifying revisions">> section below |
415 | * for an introduction to revision options supported by the git | |
416 | * commands. For details on specific git command options, refer | |
417 | * to the man page of the command in question. | |
8855ada4 JF |
418 | **/ |
419 | ||
6908bdbd | 420 | if (opt_request == REQ_VIEW_MAIN) |
8855ada4 JF |
421 | /* XXX: This is vulnerable to the user overriding |
422 | * options required for the main view parser. */ | |
6908bdbd JF |
423 | string_copy(opt_cmd, "git log --stat --pretty=raw"); |
424 | else | |
425 | string_copy(opt_cmd, "git"); | |
426 | buf_size = strlen(opt_cmd); | |
427 | ||
428 | while (buf_size < sizeof(opt_cmd) && i < argc) { | |
429 | opt_cmd[buf_size++] = ' '; | |
430 | buf_size = sq_quote(opt_cmd, buf_size, argv[i++]); | |
431 | } | |
432 | ||
433 | if (buf_size >= sizeof(opt_cmd)) | |
434 | die("command too long"); | |
435 | ||
436 | opt_cmd[buf_size] = 0; | |
437 | ||
438 | } | |
439 | ||
afdc35b3 JF |
440 | if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8")) |
441 | opt_utf8 = FALSE; | |
442 | ||
8855ada4 | 443 | return TRUE; |
b76c2afc JF |
444 | } |
445 | ||
446 | ||
219ee52a JF |
447 | /** |
448 | * ENVIRONMENT VARIABLES | |
449 | * --------------------- | |
450 | * Several options related to the interface with git can be configured | |
451 | * via environment options. | |
452 | * | |
453 | * Repository references | |
454 | * ~~~~~~~~~~~~~~~~~~~~~ | |
455 | * Commits that are referenced by tags and branch heads will be marked | |
456 | * by the reference name surrounded by '[' and ']': | |
457 | * | |
458 | * 2006-03-26 19:42 Petr Baudis | [cogito-0.17.1] Cogito 0.17.1 | |
459 | * | |
460 | * If you want to filter out certain directories under `.git/refs/`, say | |
461 | * `tmp` you can do it by setting the following variable: | |
462 | * | |
463 | * $ TIG_LS_REMOTE="git ls-remote . | sed /\/tmp\//d" tig | |
464 | * | |
465 | * Or set the variable permanently in your environment. | |
466 | * | |
467 | * TIG_LS_REMOTE:: | |
468 | * Set command for retrieving all repository references. The command | |
469 | * should output data in the same format as git-ls-remote(1). | |
470 | **/ | |
471 | ||
472 | #define TIG_LS_REMOTE \ | |
473 | "git ls-remote . 2>/dev/null" | |
474 | ||
475 | /** | |
476 | * [[view-commands]] | |
477 | * View commands | |
478 | * ~~~~~~~~~~~~~ | |
479 | * It is possible to alter which commands are used for the different views. | |
480 | * If for example you prefer commits in the main view to be sorted by date | |
481 | * and only show 500 commits, use: | |
482 | * | |
483 | * $ TIG_MAIN_CMD="git log --date-order -n500 --pretty=raw %s" tig | |
484 | * | |
485 | * Or set the variable permanently in your environment. | |
486 | * | |
487 | * Notice, how `%s` is used to specify the commit reference. There can | |
488 | * be a maximum of 5 `%s` ref specifications. | |
489 | * | |
490 | * TIG_DIFF_CMD:: | |
491 | * The command used for the diff view. By default, git show is used | |
492 | * as a backend. | |
493 | * | |
494 | * TIG_LOG_CMD:: | |
495 | * The command used for the log view. If you prefer to have both | |
496 | * author and committer shown in the log view be sure to pass | |
497 | * `--pretty=fuller` to git log. | |
498 | * | |
499 | * TIG_MAIN_CMD:: | |
500 | * The command used for the main view. Note, you must always specify | |
501 | * the option: `--pretty=raw` since the main view parser expects to | |
502 | * read that format. | |
503 | **/ | |
504 | ||
505 | #define TIG_DIFF_CMD \ | |
506 | "git show --patch-with-stat --find-copies-harder -B -C %s" | |
507 | ||
508 | #define TIG_LOG_CMD \ | |
509 | "git log --cc --stat -n100 %s" | |
510 | ||
511 | #define TIG_MAIN_CMD \ | |
512 | "git log --topo-order --stat --pretty=raw %s" | |
513 | ||
514 | /* ... silently ignore that the following are also exported. */ | |
515 | ||
516 | #define TIG_HELP_CMD \ | |
517 | "man tig 2>/dev/null" | |
518 | ||
519 | #define TIG_PAGER_CMD \ | |
520 | "" | |
521 | ||
522 | ||
b76c2afc JF |
523 | /* |
524 | * Line-oriented content detection. | |
6b161b31 JF |
525 | */ |
526 | ||
2e8488b4 | 527 | #define LINE_INFO \ |
6b161b31 JF |
528 | /* Line type String to match Foreground Background Attributes |
529 | * --------- --------------- ---------- ---------- ---------- */ \ | |
a28bcc22 JF |
530 | /* Diff markup */ \ |
531 | LINE(DIFF, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
8855ada4 | 532 | LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
a28bcc22 JF |
533 | LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
534 | LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
535 | LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \ | |
3af8774e JF |
536 | LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
537 | LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
a28bcc22 JF |
538 | LINE(DIFF_COPY, "copy ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
539 | LINE(DIFF_RENAME, "rename ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
540 | LINE(DIFF_SIM, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
541 | LINE(DIFF_DISSIM, "dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
542 | /* Pretty print commit header */ \ | |
6908bdbd | 543 | LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
8855ada4 | 544 | LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
6908bdbd JF |
545 | LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
546 | LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
8855ada4 JF |
547 | LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
548 | LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
a28bcc22 JF |
549 | /* Raw commit header */ \ |
550 | LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
551 | LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
552 | LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
8855ada4 | 553 | LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
a28bcc22 JF |
554 | LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
555 | /* Misc */ \ | |
556 | LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
557 | LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
558 | /* UI colors */ \ | |
559 | LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \ | |
560 | LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \ | |
561 | LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
6b161b31 JF |
562 | LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \ |
563 | LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \ | |
a28bcc22 JF |
564 | LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
565 | LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
566 | LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \ | |
c34d9c9f JF |
567 | LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
568 | LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \ | |
569 | LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), | |
2e8488b4 | 570 | |
78c70acd | 571 | enum line_type { |
2e8488b4 JF |
572 | #define LINE(type, line, fg, bg, attr) \ |
573 | LINE_##type | |
574 | LINE_INFO | |
575 | #undef LINE | |
78c70acd JF |
576 | }; |
577 | ||
578 | struct line_info { | |
4685845e | 579 | const char *line; /* The start of line to match. */ |
2e8488b4 JF |
580 | int linelen; /* Size of string to match. */ |
581 | int fg, bg, attr; /* Color and text attributes for the lines. */ | |
78c70acd JF |
582 | }; |
583 | ||
2e8488b4 | 584 | static struct line_info line_info[] = { |
78c70acd | 585 | #define LINE(type, line, fg, bg, attr) \ |
a28bcc22 | 586 | { (line), STRING_SIZE(line), (fg), (bg), (attr) } |
2e8488b4 JF |
587 | LINE_INFO |
588 | #undef LINE | |
78c70acd JF |
589 | }; |
590 | ||
2e8488b4 JF |
591 | static enum line_type |
592 | get_line_type(char *line) | |
78c70acd JF |
593 | { |
594 | int linelen = strlen(line); | |
a28bcc22 | 595 | enum line_type type; |
78c70acd | 596 | |
a28bcc22 | 597 | for (type = 0; type < ARRAY_SIZE(line_info); type++) |
2e8488b4 | 598 | /* Case insensitive search matches Signed-off-by lines better. */ |
a28bcc22 JF |
599 | if (linelen >= line_info[type].linelen && |
600 | !strncasecmp(line_info[type].line, line, line_info[type].linelen)) | |
601 | return type; | |
78c70acd | 602 | |
2e8488b4 | 603 | return LINE_DEFAULT; |
78c70acd JF |
604 | } |
605 | ||
2e8488b4 | 606 | static inline int |
78c70acd JF |
607 | get_line_attr(enum line_type type) |
608 | { | |
2e8488b4 JF |
609 | assert(type < ARRAY_SIZE(line_info)); |
610 | return COLOR_PAIR(type) | line_info[type].attr; | |
78c70acd JF |
611 | } |
612 | ||
613 | static void | |
614 | init_colors(void) | |
615 | { | |
82e78006 JF |
616 | int default_bg = COLOR_BLACK; |
617 | int default_fg = COLOR_WHITE; | |
a28bcc22 | 618 | enum line_type type; |
78c70acd JF |
619 | |
620 | start_color(); | |
621 | ||
622 | if (use_default_colors() != ERR) { | |
82e78006 JF |
623 | default_bg = -1; |
624 | default_fg = -1; | |
78c70acd JF |
625 | } |
626 | ||
a28bcc22 JF |
627 | for (type = 0; type < ARRAY_SIZE(line_info); type++) { |
628 | struct line_info *info = &line_info[type]; | |
82e78006 JF |
629 | int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg; |
630 | int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg; | |
78c70acd | 631 | |
a28bcc22 | 632 | init_pair(type, fg, bg); |
78c70acd JF |
633 | } |
634 | } | |
635 | ||
fe7233c3 JF |
636 | struct line { |
637 | enum line_type type; | |
638 | void *data; /* User data */ | |
639 | }; | |
640 | ||
78c70acd | 641 | |
1ba2ae4b | 642 | /** |
468876c9 JF |
643 | * The viewer |
644 | * ---------- | |
c2124ccd JF |
645 | * The display consists of a status window on the last line of the screen and |
646 | * one or more views. The default is to only show one view at the time but it | |
647 | * is possible to split both the main and log view to also show the commit | |
648 | * diff. | |
468876c9 | 649 | * |
c2124ccd JF |
650 | * If you are in the log view and press 'Enter' when the current line is a |
651 | * commit line, such as: | |
468876c9 | 652 | * |
c2124ccd | 653 | * commit 4d55caff4cc89335192f3e566004b4ceef572521 |
468876c9 | 654 | * |
c2124ccd JF |
655 | * You will split the view so that the log view is displayed in the top window |
656 | * and the diff view in the bottom window. You can switch between the two | |
657 | * views by pressing 'Tab'. To maximize the log view again, simply press 'l'. | |
658 | **/ | |
659 | ||
660 | struct view; | |
fe7233c3 | 661 | struct view_ops; |
c2124ccd JF |
662 | |
663 | /* The display array of active views and the index of the current view. */ | |
664 | static struct view *display[2]; | |
665 | static unsigned int current_view; | |
666 | ||
667 | #define foreach_view(view, i) \ | |
668 | for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++) | |
669 | ||
9f41488f | 670 | #define displayed_views() (display[1] != NULL ? 2 : 1) |
c2124ccd JF |
671 | |
672 | /** | |
673 | * Current head and commit ID | |
674 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
675 | * The viewer keeps track of both what head and commit ID you are currently | |
676 | * viewing. The commit ID will follow the cursor line and change everytime time | |
677 | * you highlight a different commit. Whenever you reopen the diff view it | |
678 | * will be reloaded, if the commit ID changed. | |
468876c9 | 679 | * |
c2124ccd JF |
680 | * The head ID is used when opening the main and log view to indicate from |
681 | * what revision to show history. | |
468876c9 | 682 | **/ |
b801d8b2 | 683 | |
c2124ccd JF |
684 | static char ref_commit[SIZEOF_REF] = "HEAD"; |
685 | static char ref_head[SIZEOF_REF] = "HEAD"; | |
686 | ||
b801d8b2 | 687 | struct view { |
03a93dbb | 688 | const char *name; /* View name */ |
4685845e TH |
689 | const char *cmd_fmt; /* Default command line format */ |
690 | const char *cmd_env; /* Command line set via environment */ | |
691 | const char *id; /* Points to either of ref_{head,commit} */ | |
6b161b31 | 692 | |
fe7233c3 | 693 | struct view_ops *ops; /* View operations */ |
22f66b0a | 694 | |
03a93dbb | 695 | char cmd[SIZEOF_CMD]; /* Command buffer */ |
49f2b43f JF |
696 | char ref[SIZEOF_REF]; /* Hovered commit reference */ |
697 | char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */ | |
2e8488b4 | 698 | |
8855ada4 JF |
699 | int height, width; /* The width and height of the main window */ |
700 | WINDOW *win; /* The main window */ | |
701 | WINDOW *title; /* The title window living below the main window */ | |
b801d8b2 JF |
702 | |
703 | /* Navigation */ | |
704 | unsigned long offset; /* Offset of the window top */ | |
705 | unsigned long lineno; /* Current line number */ | |
706 | ||
f6da0b66 JF |
707 | /* If non-NULL, points to the view that opened this view. If this view |
708 | * is closed tig will switch back to the parent view. */ | |
709 | struct view *parent; | |
710 | ||
b801d8b2 JF |
711 | /* Buffering */ |
712 | unsigned long lines; /* Total number of lines */ | |
fe7233c3 | 713 | struct line *line; /* Line index */ |
8855ada4 | 714 | unsigned int digits; /* Number of digits in the lines member. */ |
b801d8b2 JF |
715 | |
716 | /* Loading */ | |
717 | FILE *pipe; | |
2e8488b4 | 718 | time_t start_time; |
b801d8b2 JF |
719 | }; |
720 | ||
fe7233c3 JF |
721 | struct view_ops { |
722 | /* What type of content being displayed. Used in the title bar. */ | |
723 | const char *type; | |
724 | /* Draw one line; @lineno must be < view->height. */ | |
725 | bool (*draw)(struct view *view, struct line *line, unsigned int lineno); | |
726 | /* Read one line; updates view->line. */ | |
727 | bool (*read)(struct view *view, struct line *prev, char *data); | |
728 | /* Depending on view, change display based on current line. */ | |
729 | bool (*enter)(struct view *view, struct line *line); | |
730 | }; | |
731 | ||
6b161b31 JF |
732 | static struct view_ops pager_ops; |
733 | static struct view_ops main_ops; | |
a28bcc22 | 734 | |
95d7ddcd JF |
735 | #define VIEW_STR(name, cmd, env, ref, ops) \ |
736 | { name, cmd, #env, ref, ops } | |
1ba2ae4b | 737 | |
95d7ddcd JF |
738 | #define VIEW_(id, name, ops, ref) \ |
739 | VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops) | |
1ba2ae4b | 740 | |
c2124ccd JF |
741 | /** |
742 | * Views | |
743 | * ~~~~~ | |
744 | * tig(1) presents various 'views' of a repository. Each view is based on output | |
745 | * from an external command, most often 'git log', 'git diff', or 'git show'. | |
746 | * | |
747 | * The main view:: | |
748 | * Is the default view, and it shows a one line summary of each commit | |
749 | * in the chosen list of revisions. The summary includes commit date, | |
750 | * author, and the first line of the log message. Additionally, any | |
751 | * repository references, such as tags, will be shown. | |
752 | * | |
753 | * The log view:: | |
754 | * Presents a more rich view of the revision log showing the whole log | |
755 | * message and the diffstat. | |
756 | * | |
757 | * The diff view:: | |
758 | * Shows either the diff of the current working tree, that is, what | |
759 | * has changed since the last commit, or the commit diff complete | |
760 | * with log message, diffstat and diff. | |
761 | * | |
762 | * The pager view:: | |
763 | * Is used for displaying both input from stdin and output from git | |
764 | * commands entered in the internal prompt. | |
765 | * | |
766 | * The help view:: | |
767 | * Displays the information from the tig(1) man page. For the help view | |
768 | * to work you need to have the tig(1) man page installed. | |
769 | **/ | |
770 | ||
b801d8b2 | 771 | static struct view views[] = { |
95d7ddcd JF |
772 | VIEW_(MAIN, "main", &main_ops, ref_head), |
773 | VIEW_(DIFF, "diff", &pager_ops, ref_commit), | |
774 | VIEW_(LOG, "log", &pager_ops, ref_head), | |
775 | VIEW_(HELP, "help", &pager_ops, "static"), | |
776 | VIEW_(PAGER, "pager", &pager_ops, "static"), | |
b801d8b2 JF |
777 | }; |
778 | ||
a28bcc22 JF |
779 | #define VIEW(req) (&views[(req) - REQ_OFFSET - 1]) |
780 | ||
4c6fabc2 | 781 | |
fe7233c3 JF |
782 | static bool |
783 | draw_view_line(struct view *view, unsigned int lineno) | |
784 | { | |
785 | if (view->offset + lineno >= view->lines) | |
786 | return FALSE; | |
787 | ||
788 | return view->ops->draw(view, &view->line[view->offset + lineno], lineno); | |
789 | } | |
790 | ||
b801d8b2 | 791 | static void |
82e78006 | 792 | redraw_view_from(struct view *view, int lineno) |
b801d8b2 | 793 | { |
82e78006 | 794 | assert(0 <= lineno && lineno < view->height); |
b801d8b2 | 795 | |
82e78006 | 796 | for (; lineno < view->height; lineno++) { |
fe7233c3 | 797 | if (!draw_view_line(view, lineno)) |
fd85fef1 | 798 | break; |
b801d8b2 JF |
799 | } |
800 | ||
801 | redrawwin(view->win); | |
802 | wrefresh(view->win); | |
803 | } | |
804 | ||
b76c2afc | 805 | static void |
82e78006 JF |
806 | redraw_view(struct view *view) |
807 | { | |
808 | wclear(view->win); | |
809 | redraw_view_from(view, 0); | |
810 | } | |
811 | ||
c2124ccd JF |
812 | |
813 | /** | |
814 | * Title windows | |
815 | * ~~~~~~~~~~~~~ | |
816 | * Each view has a title window which shows the name of the view, current | |
817 | * commit ID if available, and where the view is positioned: | |
818 | * | |
819 | * [main] c622eefaa485995320bc743431bae0d497b1d875 - commit 1 of 61 (1%) | |
820 | * | |
821 | * By default, the title of the current view is highlighted using bold font. | |
822 | **/ | |
823 | ||
6b161b31 | 824 | static void |
81030ec8 JF |
825 | update_view_title(struct view *view) |
826 | { | |
827 | if (view == display[current_view]) | |
828 | wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS)); | |
829 | else | |
830 | wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR)); | |
831 | ||
832 | werase(view->title); | |
833 | wmove(view->title, 0, 0); | |
834 | ||
81030ec8 JF |
835 | if (*view->ref) |
836 | wprintw(view->title, "[%s] %s", view->name, view->ref); | |
837 | else | |
838 | wprintw(view->title, "[%s]", view->name); | |
839 | ||
c19f8017 JF |
840 | if (view->lines || view->pipe) { |
841 | unsigned int lines = view->lines | |
842 | ? (view->lineno + 1) * 100 / view->lines | |
843 | : 0; | |
844 | ||
81030ec8 JF |
845 | wprintw(view->title, " - %s %d of %d (%d%%)", |
846 | view->ops->type, | |
847 | view->lineno + 1, | |
848 | view->lines, | |
c19f8017 | 849 | lines); |
81030ec8 JF |
850 | } |
851 | ||
f97f4012 JF |
852 | if (view->pipe) { |
853 | time_t secs = time(NULL) - view->start_time; | |
854 | ||
855 | /* Three git seconds are a long time ... */ | |
856 | if (secs > 2) | |
857 | wprintw(view->title, " %lds", secs); | |
858 | } | |
859 | ||
860 | ||
81030ec8 JF |
861 | wrefresh(view->title); |
862 | } | |
863 | ||
864 | static void | |
6b161b31 | 865 | resize_display(void) |
b76c2afc | 866 | { |
03a93dbb | 867 | int offset, i; |
6b161b31 JF |
868 | struct view *base = display[0]; |
869 | struct view *view = display[1] ? display[1] : display[0]; | |
b76c2afc | 870 | |
6b161b31 | 871 | /* Setup window dimensions */ |
b76c2afc | 872 | |
03a93dbb | 873 | getmaxyx(stdscr, base->height, base->width); |
b76c2afc | 874 | |
6b161b31 | 875 | /* Make room for the status window. */ |
03a93dbb | 876 | base->height -= 1; |
6b161b31 JF |
877 | |
878 | if (view != base) { | |
03a93dbb JF |
879 | /* Horizontal split. */ |
880 | view->width = base->width; | |
6b161b31 JF |
881 | view->height = SCALE_SPLIT_VIEW(base->height); |
882 | base->height -= view->height; | |
883 | ||
884 | /* Make room for the title bar. */ | |
885 | view->height -= 1; | |
886 | } | |
887 | ||
888 | /* Make room for the title bar. */ | |
889 | base->height -= 1; | |
890 | ||
891 | offset = 0; | |
892 | ||
893 | foreach_view (view, i) { | |
b76c2afc | 894 | if (!view->win) { |
c19f8017 | 895 | view->win = newwin(view->height, 0, offset, 0); |
6b161b31 JF |
896 | if (!view->win) |
897 | die("Failed to create %s view", view->name); | |
898 | ||
899 | scrollok(view->win, TRUE); | |
900 | ||
901 | view->title = newwin(1, 0, offset + view->height, 0); | |
902 | if (!view->title) | |
903 | die("Failed to create title window"); | |
904 | ||
905 | } else { | |
c19f8017 | 906 | wresize(view->win, view->height, view->width); |
6b161b31 JF |
907 | mvwin(view->win, offset, 0); |
908 | mvwin(view->title, offset + view->height, 0); | |
a28bcc22 | 909 | } |
a28bcc22 | 910 | |
6b161b31 | 911 | offset += view->height + 1; |
b76c2afc | 912 | } |
6b161b31 | 913 | } |
b76c2afc | 914 | |
6b161b31 | 915 | static void |
20bb5e18 JF |
916 | redraw_display(void) |
917 | { | |
918 | struct view *view; | |
919 | int i; | |
920 | ||
921 | foreach_view (view, i) { | |
922 | redraw_view(view); | |
923 | update_view_title(view); | |
924 | } | |
925 | } | |
926 | ||
927 | ||
2e8488b4 JF |
928 | /* |
929 | * Navigation | |
930 | */ | |
931 | ||
4a2909a7 | 932 | /* Scrolling backend */ |
b801d8b2 | 933 | static void |
b3a54cba | 934 | do_scroll_view(struct view *view, int lines, bool redraw) |
b801d8b2 | 935 | { |
fd85fef1 JF |
936 | /* The rendering expects the new offset. */ |
937 | view->offset += lines; | |
938 | ||
939 | assert(0 <= view->offset && view->offset < view->lines); | |
940 | assert(lines); | |
b801d8b2 | 941 | |
82e78006 | 942 | /* Redraw the whole screen if scrolling is pointless. */ |
4c6fabc2 | 943 | if (view->height < ABS(lines)) { |
b76c2afc JF |
944 | redraw_view(view); |
945 | ||
946 | } else { | |
22f66b0a | 947 | int line = lines > 0 ? view->height - lines : 0; |
82e78006 | 948 | int end = line + ABS(lines); |
fd85fef1 JF |
949 | |
950 | wscrl(view->win, lines); | |
951 | ||
22f66b0a | 952 | for (; line < end; line++) { |
fe7233c3 | 953 | if (!draw_view_line(view, line)) |
fd85fef1 JF |
954 | break; |
955 | } | |
956 | } | |
957 | ||
958 | /* Move current line into the view. */ | |
959 | if (view->lineno < view->offset) { | |
960 | view->lineno = view->offset; | |
fe7233c3 | 961 | draw_view_line(view, 0); |
fd85fef1 JF |
962 | |
963 | } else if (view->lineno >= view->offset + view->height) { | |
6706b2ba JF |
964 | if (view->lineno == view->offset + view->height) { |
965 | /* Clear the hidden line so it doesn't show if the view | |
966 | * is scrolled up. */ | |
967 | wmove(view->win, view->height, 0); | |
968 | wclrtoeol(view->win); | |
969 | } | |
fd85fef1 | 970 | view->lineno = view->offset + view->height - 1; |
fe7233c3 | 971 | draw_view_line(view, view->lineno - view->offset); |
fd85fef1 JF |
972 | } |
973 | ||
4c6fabc2 | 974 | assert(view->offset <= view->lineno && view->lineno < view->lines); |
fd85fef1 | 975 | |
b3a54cba JF |
976 | if (!redraw) |
977 | return; | |
978 | ||
fd85fef1 JF |
979 | redrawwin(view->win); |
980 | wrefresh(view->win); | |
9d3f5834 | 981 | report(""); |
fd85fef1 | 982 | } |
78c70acd | 983 | |
4a2909a7 | 984 | /* Scroll frontend */ |
fd85fef1 | 985 | static void |
6b161b31 | 986 | scroll_view(struct view *view, enum request request) |
fd85fef1 JF |
987 | { |
988 | int lines = 1; | |
b801d8b2 JF |
989 | |
990 | switch (request) { | |
4a2909a7 | 991 | case REQ_SCROLL_PAGE_DOWN: |
fd85fef1 | 992 | lines = view->height; |
4a2909a7 | 993 | case REQ_SCROLL_LINE_DOWN: |
b801d8b2 | 994 | if (view->offset + lines > view->lines) |
bde3653a | 995 | lines = view->lines - view->offset; |
b801d8b2 | 996 | |
fd85fef1 | 997 | if (lines == 0 || view->offset + view->height >= view->lines) { |
eb98559e | 998 | report("Cannot scroll beyond the last line"); |
b801d8b2 JF |
999 | return; |
1000 | } | |
1001 | break; | |
1002 | ||
4a2909a7 | 1003 | case REQ_SCROLL_PAGE_UP: |
fd85fef1 | 1004 | lines = view->height; |
4a2909a7 | 1005 | case REQ_SCROLL_LINE_UP: |
b801d8b2 JF |
1006 | if (lines > view->offset) |
1007 | lines = view->offset; | |
1008 | ||
1009 | if (lines == 0) { | |
eb98559e | 1010 | report("Cannot scroll beyond the first line"); |
b801d8b2 JF |
1011 | return; |
1012 | } | |
1013 | ||
fd85fef1 | 1014 | lines = -lines; |
b801d8b2 | 1015 | break; |
03a93dbb | 1016 | |
6b161b31 JF |
1017 | default: |
1018 | die("request %d not handled in switch", request); | |
b801d8b2 JF |
1019 | } |
1020 | ||
b3a54cba | 1021 | do_scroll_view(view, lines, TRUE); |
fd85fef1 | 1022 | } |
b801d8b2 | 1023 | |
4a2909a7 | 1024 | /* Cursor moving */ |
fd85fef1 | 1025 | static void |
b3a54cba | 1026 | move_view(struct view *view, enum request request, bool redraw) |
fd85fef1 JF |
1027 | { |
1028 | int steps; | |
b801d8b2 | 1029 | |
fd85fef1 | 1030 | switch (request) { |
4a2909a7 | 1031 | case REQ_MOVE_FIRST_LINE: |
78c70acd JF |
1032 | steps = -view->lineno; |
1033 | break; | |
1034 | ||
4a2909a7 | 1035 | case REQ_MOVE_LAST_LINE: |
78c70acd JF |
1036 | steps = view->lines - view->lineno - 1; |
1037 | break; | |
1038 | ||
4a2909a7 | 1039 | case REQ_MOVE_PAGE_UP: |
78c70acd JF |
1040 | steps = view->height > view->lineno |
1041 | ? -view->lineno : -view->height; | |
1042 | break; | |
1043 | ||
4a2909a7 | 1044 | case REQ_MOVE_PAGE_DOWN: |
78c70acd JF |
1045 | steps = view->lineno + view->height >= view->lines |
1046 | ? view->lines - view->lineno - 1 : view->height; | |
1047 | break; | |
1048 | ||
4a2909a7 | 1049 | case REQ_MOVE_UP: |
fd85fef1 JF |
1050 | steps = -1; |
1051 | break; | |
b801d8b2 | 1052 | |
4a2909a7 | 1053 | case REQ_MOVE_DOWN: |
fd85fef1 JF |
1054 | steps = 1; |
1055 | break; | |
6b161b31 JF |
1056 | |
1057 | default: | |
1058 | die("request %d not handled in switch", request); | |
78c70acd | 1059 | } |
b801d8b2 | 1060 | |
4c6fabc2 | 1061 | if (steps <= 0 && view->lineno == 0) { |
eb98559e | 1062 | report("Cannot move beyond the first line"); |
78c70acd | 1063 | return; |
b801d8b2 | 1064 | |
6908bdbd | 1065 | } else if (steps >= 0 && view->lineno + 1 >= view->lines) { |
eb98559e | 1066 | report("Cannot move beyond the last line"); |
78c70acd | 1067 | return; |
fd85fef1 JF |
1068 | } |
1069 | ||
4c6fabc2 | 1070 | /* Move the current line */ |
fd85fef1 | 1071 | view->lineno += steps; |
4c6fabc2 JF |
1072 | assert(0 <= view->lineno && view->lineno < view->lines); |
1073 | ||
1074 | /* Repaint the old "current" line if we be scrolling */ | |
2e8488b4 JF |
1075 | if (ABS(steps) < view->height) { |
1076 | int prev_lineno = view->lineno - steps - view->offset; | |
1077 | ||
1078 | wmove(view->win, prev_lineno, 0); | |
1079 | wclrtoeol(view->win); | |
fe7233c3 | 1080 | draw_view_line(view, prev_lineno); |
2e8488b4 | 1081 | } |
fd85fef1 | 1082 | |
4c6fabc2 | 1083 | /* Check whether the view needs to be scrolled */ |
fd85fef1 JF |
1084 | if (view->lineno < view->offset || |
1085 | view->lineno >= view->offset + view->height) { | |
1086 | if (steps < 0 && -steps > view->offset) { | |
1087 | steps = -view->offset; | |
b76c2afc JF |
1088 | |
1089 | } else if (steps > 0) { | |
1090 | if (view->lineno == view->lines - 1 && | |
1091 | view->lines > view->height) { | |
1092 | steps = view->lines - view->offset - 1; | |
1093 | if (steps >= view->height) | |
1094 | steps -= view->height - 1; | |
1095 | } | |
b801d8b2 | 1096 | } |
78c70acd | 1097 | |
b3a54cba | 1098 | do_scroll_view(view, steps, redraw); |
fd85fef1 | 1099 | return; |
b801d8b2 JF |
1100 | } |
1101 | ||
4c6fabc2 | 1102 | /* Draw the current line */ |
fe7233c3 | 1103 | draw_view_line(view, view->lineno - view->offset); |
fd85fef1 | 1104 | |
b3a54cba JF |
1105 | if (!redraw) |
1106 | return; | |
1107 | ||
b801d8b2 JF |
1108 | redrawwin(view->win); |
1109 | wrefresh(view->win); | |
9d3f5834 | 1110 | report(""); |
b801d8b2 JF |
1111 | } |
1112 | ||
b801d8b2 | 1113 | |
2e8488b4 JF |
1114 | /* |
1115 | * Incremental updating | |
1116 | */ | |
b801d8b2 | 1117 | |
199d1288 JF |
1118 | static void |
1119 | end_update(struct view *view) | |
1120 | { | |
1121 | if (!view->pipe) | |
1122 | return; | |
1123 | set_nonblocking_input(FALSE); | |
1124 | if (view->pipe == stdin) | |
1125 | fclose(view->pipe); | |
1126 | else | |
1127 | pclose(view->pipe); | |
1128 | view->pipe = NULL; | |
1129 | } | |
1130 | ||
03a93dbb | 1131 | static bool |
b801d8b2 JF |
1132 | begin_update(struct view *view) |
1133 | { | |
4685845e | 1134 | const char *id = view->id; |
fd85fef1 | 1135 | |
199d1288 JF |
1136 | if (view->pipe) |
1137 | end_update(view); | |
1138 | ||
03a93dbb JF |
1139 | if (opt_cmd[0]) { |
1140 | string_copy(view->cmd, opt_cmd); | |
1141 | opt_cmd[0] = 0; | |
8855ada4 JF |
1142 | /* When running random commands, the view ref could have become |
1143 | * invalid so clear it. */ | |
1144 | view->ref[0] = 0; | |
03a93dbb | 1145 | } else { |
4685845e | 1146 | const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt; |
1ba2ae4b JF |
1147 | |
1148 | if (snprintf(view->cmd, sizeof(view->cmd), format, | |
1149 | id, id, id, id, id) >= sizeof(view->cmd)) | |
03a93dbb JF |
1150 | return FALSE; |
1151 | } | |
b801d8b2 | 1152 | |
6908bdbd JF |
1153 | /* Special case for the pager view. */ |
1154 | if (opt_pipe) { | |
1155 | view->pipe = opt_pipe; | |
1156 | opt_pipe = NULL; | |
1157 | } else { | |
1158 | view->pipe = popen(view->cmd, "r"); | |
1159 | } | |
1160 | ||
2e8488b4 JF |
1161 | if (!view->pipe) |
1162 | return FALSE; | |
b801d8b2 | 1163 | |
6b161b31 | 1164 | set_nonblocking_input(TRUE); |
b801d8b2 JF |
1165 | |
1166 | view->offset = 0; | |
1167 | view->lines = 0; | |
1168 | view->lineno = 0; | |
49f2b43f | 1169 | string_copy(view->vid, id); |
b801d8b2 | 1170 | |
2e8488b4 JF |
1171 | if (view->line) { |
1172 | int i; | |
1173 | ||
1174 | for (i = 0; i < view->lines; i++) | |
fe7233c3 JF |
1175 | if (view->line[i].data) |
1176 | free(view->line[i].data); | |
2e8488b4 JF |
1177 | |
1178 | free(view->line); | |
1179 | view->line = NULL; | |
1180 | } | |
1181 | ||
1182 | view->start_time = time(NULL); | |
1183 | ||
b801d8b2 JF |
1184 | return TRUE; |
1185 | } | |
1186 | ||
03a93dbb | 1187 | static bool |
b801d8b2 JF |
1188 | update_view(struct view *view) |
1189 | { | |
1190 | char buffer[BUFSIZ]; | |
1191 | char *line; | |
fe7233c3 | 1192 | struct line *tmp; |
82e78006 JF |
1193 | /* The number of lines to read. If too low it will cause too much |
1194 | * redrawing (and possible flickering), if too high responsiveness | |
1195 | * will suffer. */ | |
8855ada4 | 1196 | unsigned long lines = view->height; |
82e78006 | 1197 | int redraw_from = -1; |
b801d8b2 JF |
1198 | |
1199 | if (!view->pipe) | |
1200 | return TRUE; | |
1201 | ||
82e78006 JF |
1202 | /* Only redraw if lines are visible. */ |
1203 | if (view->offset + view->height >= view->lines) | |
1204 | redraw_from = view->lines - view->offset; | |
b801d8b2 JF |
1205 | |
1206 | tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines)); | |
1207 | if (!tmp) | |
1208 | goto alloc_error; | |
1209 | ||
1210 | view->line = tmp; | |
1211 | ||
1212 | while ((line = fgets(buffer, sizeof(buffer), view->pipe))) { | |
c34d9c9f | 1213 | int linelen = strlen(line); |
b801d8b2 | 1214 | |
fe7233c3 JF |
1215 | struct line *prev = view->lines |
1216 | ? &view->line[view->lines - 1] | |
1217 | : NULL; | |
1218 | ||
b801d8b2 JF |
1219 | if (linelen) |
1220 | line[linelen - 1] = 0; | |
1221 | ||
fe7233c3 | 1222 | if (!view->ops->read(view, prev, line)) |
b801d8b2 | 1223 | goto alloc_error; |
fd85fef1 JF |
1224 | |
1225 | if (lines-- == 1) | |
1226 | break; | |
b801d8b2 JF |
1227 | } |
1228 | ||
8855ada4 JF |
1229 | { |
1230 | int digits; | |
1231 | ||
1232 | lines = view->lines; | |
1233 | for (digits = 0; lines; digits++) | |
1234 | lines /= 10; | |
1235 | ||
1236 | /* Keep the displayed view in sync with line number scaling. */ | |
1237 | if (digits != view->digits) { | |
1238 | view->digits = digits; | |
1239 | redraw_from = 0; | |
1240 | } | |
1241 | } | |
1242 | ||
82e78006 JF |
1243 | if (redraw_from >= 0) { |
1244 | /* If this is an incremental update, redraw the previous line | |
a28bcc22 JF |
1245 | * since for commits some members could have changed when |
1246 | * loading the main view. */ | |
82e78006 JF |
1247 | if (redraw_from > 0) |
1248 | redraw_from--; | |
1249 | ||
1250 | /* Incrementally draw avoids flickering. */ | |
1251 | redraw_view_from(view, redraw_from); | |
4c6fabc2 | 1252 | } |
b801d8b2 | 1253 | |
eb98559e JF |
1254 | /* Update the title _after_ the redraw so that if the redraw picks up a |
1255 | * commit reference in view->ref it'll be available here. */ | |
1256 | update_view_title(view); | |
1257 | ||
b801d8b2 | 1258 | if (ferror(view->pipe)) { |
03a93dbb | 1259 | report("Failed to read: %s", strerror(errno)); |
b801d8b2 JF |
1260 | goto end; |
1261 | ||
1262 | } else if (feof(view->pipe)) { | |
a28bcc22 | 1263 | if (view == VIEW(REQ_VIEW_HELP)) { |
4685845e | 1264 | const char *msg = TIG_HELP; |
468876c9 JF |
1265 | |
1266 | if (view->lines == 0) { | |
1267 | /* Slightly ugly, but abusing view->ref keeps | |
1268 | * the error message. */ | |
1269 | string_copy(view->ref, "No help available"); | |
1270 | msg = "The tig(1) manpage is not installed"; | |
1271 | } | |
1272 | ||
1273 | report("%s", msg); | |
2e8488b4 JF |
1274 | goto end; |
1275 | } | |
1276 | ||
f97f4012 | 1277 | report(""); |
b801d8b2 JF |
1278 | goto end; |
1279 | } | |
1280 | ||
1281 | return TRUE; | |
1282 | ||
1283 | alloc_error: | |
2e8488b4 | 1284 | report("Allocation failure"); |
b801d8b2 JF |
1285 | |
1286 | end: | |
1287 | end_update(view); | |
1288 | return FALSE; | |
1289 | } | |
1290 | ||
49f2b43f JF |
1291 | enum open_flags { |
1292 | OPEN_DEFAULT = 0, /* Use default view switching. */ | |
1293 | OPEN_SPLIT = 1, /* Split current view. */ | |
1294 | OPEN_BACKGROUNDED = 2, /* Backgrounded. */ | |
1295 | OPEN_RELOAD = 4, /* Reload view even if it is the current. */ | |
1296 | }; | |
1297 | ||
6b161b31 | 1298 | static void |
49f2b43f | 1299 | open_view(struct view *prev, enum request request, enum open_flags flags) |
b801d8b2 | 1300 | { |
49f2b43f JF |
1301 | bool backgrounded = !!(flags & OPEN_BACKGROUNDED); |
1302 | bool split = !!(flags & OPEN_SPLIT); | |
1303 | bool reload = !!(flags & OPEN_RELOAD); | |
a28bcc22 | 1304 | struct view *view = VIEW(request); |
9f41488f | 1305 | int nviews = displayed_views(); |
6e950a52 | 1306 | struct view *base_view = display[0]; |
b801d8b2 | 1307 | |
49f2b43f | 1308 | if (view == prev && nviews == 1 && !reload) { |
6b161b31 JF |
1309 | report("Already in %s view", view->name); |
1310 | return; | |
1311 | } | |
b801d8b2 | 1312 | |
8855ada4 | 1313 | if ((reload || strcmp(view->vid, view->id)) && |
03a93dbb | 1314 | !begin_update(view)) { |
6b161b31 JF |
1315 | report("Failed to load %s view", view->name); |
1316 | return; | |
1317 | } | |
a28bcc22 | 1318 | |
6b161b31 JF |
1319 | if (split) { |
1320 | display[current_view + 1] = view; | |
1321 | if (!backgrounded) | |
a28bcc22 | 1322 | current_view++; |
6b161b31 JF |
1323 | } else { |
1324 | /* Maximize the current view. */ | |
1325 | memset(display, 0, sizeof(display)); | |
1326 | current_view = 0; | |
1327 | display[current_view] = view; | |
a28bcc22 | 1328 | } |
b801d8b2 | 1329 | |
6e950a52 JF |
1330 | /* Resize the view when switching between split- and full-screen, |
1331 | * or when switching between two different full-screen views. */ | |
1332 | if (nviews != displayed_views() || | |
1333 | (nviews == 1 && base_view != display[0])) | |
a006db63 | 1334 | resize_display(); |
b801d8b2 | 1335 | |
a8891802 | 1336 | if (split && prev->lineno - prev->offset >= prev->height) { |
03a93dbb | 1337 | /* Take the title line into account. */ |
eb98559e | 1338 | int lines = prev->lineno - prev->offset - prev->height + 1; |
03a93dbb JF |
1339 | |
1340 | /* Scroll the view that was split if the current line is | |
1341 | * outside the new limited view. */ | |
b3a54cba | 1342 | do_scroll_view(prev, lines, TRUE); |
03a93dbb JF |
1343 | } |
1344 | ||
6b161b31 | 1345 | if (prev && view != prev) { |
9b995f0c | 1346 | if (split && !backgrounded) { |
f0b3ab80 JF |
1347 | /* "Blur" the previous view. */ |
1348 | update_view_title(prev); | |
9f396969 | 1349 | } |
f0b3ab80 | 1350 | |
f6da0b66 | 1351 | view->parent = prev; |
b801d8b2 JF |
1352 | } |
1353 | ||
9f396969 | 1354 | if (view->pipe && view->lines == 0) { |
03a93dbb JF |
1355 | /* Clear the old view and let the incremental updating refill |
1356 | * the screen. */ | |
1357 | wclear(view->win); | |
f97f4012 | 1358 | report(""); |
03a93dbb JF |
1359 | } else { |
1360 | redraw_view(view); | |
468876c9 JF |
1361 | if (view == VIEW(REQ_VIEW_HELP)) |
1362 | report("%s", TIG_HELP); | |
1363 | else | |
1364 | report(""); | |
03a93dbb | 1365 | } |
6706b2ba JF |
1366 | |
1367 | /* If the view is backgrounded the above calls to report() | |
1368 | * won't redraw the view title. */ | |
1369 | if (backgrounded) | |
1370 | update_view_title(view); | |
b801d8b2 JF |
1371 | } |
1372 | ||
1373 | ||
6b161b31 JF |
1374 | /* |
1375 | * User request switch noodle | |
1376 | */ | |
1377 | ||
b801d8b2 | 1378 | static int |
6b161b31 | 1379 | view_driver(struct view *view, enum request request) |
b801d8b2 | 1380 | { |
b801d8b2 JF |
1381 | int i; |
1382 | ||
1383 | switch (request) { | |
4a2909a7 JF |
1384 | case REQ_MOVE_UP: |
1385 | case REQ_MOVE_DOWN: | |
1386 | case REQ_MOVE_PAGE_UP: | |
1387 | case REQ_MOVE_PAGE_DOWN: | |
1388 | case REQ_MOVE_FIRST_LINE: | |
1389 | case REQ_MOVE_LAST_LINE: | |
b3a54cba | 1390 | move_view(view, request, TRUE); |
fd85fef1 JF |
1391 | break; |
1392 | ||
4a2909a7 JF |
1393 | case REQ_SCROLL_LINE_DOWN: |
1394 | case REQ_SCROLL_LINE_UP: | |
1395 | case REQ_SCROLL_PAGE_DOWN: | |
1396 | case REQ_SCROLL_PAGE_UP: | |
a28bcc22 | 1397 | scroll_view(view, request); |
b801d8b2 JF |
1398 | break; |
1399 | ||
4a2909a7 | 1400 | case REQ_VIEW_MAIN: |
4a2909a7 | 1401 | case REQ_VIEW_DIFF: |
2e8488b4 JF |
1402 | case REQ_VIEW_LOG: |
1403 | case REQ_VIEW_HELP: | |
6908bdbd | 1404 | case REQ_VIEW_PAGER: |
49f2b43f | 1405 | open_view(view, request, OPEN_DEFAULT); |
b801d8b2 JF |
1406 | break; |
1407 | ||
b3a54cba JF |
1408 | case REQ_NEXT: |
1409 | case REQ_PREVIOUS: | |
1410 | request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP; | |
1411 | ||
1412 | if (view == VIEW(REQ_VIEW_DIFF) && | |
1413 | view->parent == VIEW(REQ_VIEW_MAIN)) { | |
f0b3ab80 | 1414 | bool redraw = display[1] == view; |
b3a54cba JF |
1415 | |
1416 | view = view->parent; | |
1417 | move_view(view, request, redraw); | |
f0b3ab80 JF |
1418 | if (redraw) |
1419 | update_view_title(view); | |
b3a54cba JF |
1420 | } else { |
1421 | move_view(view, request, TRUE); | |
1422 | break; | |
1423 | } | |
6706b2ba JF |
1424 | /* Fall-through */ |
1425 | ||
6b161b31 | 1426 | case REQ_ENTER: |
6908bdbd JF |
1427 | if (!view->lines) { |
1428 | report("Nothing to enter"); | |
1429 | break; | |
1430 | } | |
fe7233c3 | 1431 | return view->ops->enter(view, &view->line[view->lineno]); |
6b161b31 | 1432 | |
03a93dbb JF |
1433 | case REQ_VIEW_NEXT: |
1434 | { | |
9f41488f | 1435 | int nviews = displayed_views(); |
03a93dbb JF |
1436 | int next_view = (current_view + 1) % nviews; |
1437 | ||
1438 | if (next_view == current_view) { | |
1439 | report("Only one view is displayed"); | |
1440 | break; | |
1441 | } | |
1442 | ||
1443 | current_view = next_view; | |
1444 | /* Blur out the title of the previous view. */ | |
1445 | update_view_title(view); | |
6734f6b9 | 1446 | report(""); |
03a93dbb JF |
1447 | break; |
1448 | } | |
4a2909a7 | 1449 | case REQ_TOGGLE_LINE_NUMBERS: |
b76c2afc | 1450 | opt_line_number = !opt_line_number; |
20bb5e18 | 1451 | redraw_display(); |
b801d8b2 JF |
1452 | break; |
1453 | ||
03a93dbb | 1454 | case REQ_PROMPT: |
8855ada4 | 1455 | /* Always reload^Wrerun commands from the prompt. */ |
49f2b43f | 1456 | open_view(view, opt_request, OPEN_RELOAD); |
03a93dbb JF |
1457 | break; |
1458 | ||
4a2909a7 | 1459 | case REQ_STOP_LOADING: |
03a93dbb | 1460 | foreach_view (view, i) { |
2e8488b4 | 1461 | if (view->pipe) |
6706b2ba | 1462 | report("Stopped loaded the %s view", view->name), |
03a93dbb JF |
1463 | end_update(view); |
1464 | } | |
b801d8b2 JF |
1465 | break; |
1466 | ||
4a2909a7 | 1467 | case REQ_SHOW_VERSION: |
6cb291b7 | 1468 | report("%s (built %s)", VERSION, __DATE__); |
b801d8b2 JF |
1469 | return TRUE; |
1470 | ||
fac7db6c JF |
1471 | case REQ_SCREEN_RESIZE: |
1472 | resize_display(); | |
1473 | /* Fall-through */ | |
4a2909a7 | 1474 | case REQ_SCREEN_REDRAW: |
20bb5e18 | 1475 | redraw_display(); |
4a2909a7 JF |
1476 | break; |
1477 | ||
1478 | case REQ_SCREEN_UPDATE: | |
b801d8b2 JF |
1479 | doupdate(); |
1480 | return TRUE; | |
1481 | ||
4f9b667a | 1482 | case REQ_VIEW_CLOSE: |
f6da0b66 | 1483 | if (view->parent) { |
4f9b667a JF |
1484 | memset(display, 0, sizeof(display)); |
1485 | current_view = 0; | |
f6da0b66 JF |
1486 | display[current_view] = view->parent; |
1487 | view->parent = NULL; | |
4f9b667a JF |
1488 | resize_display(); |
1489 | redraw_display(); | |
1490 | break; | |
1491 | } | |
1492 | /* Fall-through */ | |
b801d8b2 JF |
1493 | case REQ_QUIT: |
1494 | return FALSE; | |
1495 | ||
1496 | default: | |
2e8488b4 | 1497 | /* An unknown key will show most commonly used commands. */ |
468876c9 | 1498 | report("Unknown key, press 'h' for help"); |
b801d8b2 JF |
1499 | return TRUE; |
1500 | } | |
1501 | ||
1502 | return TRUE; | |
1503 | } | |
1504 | ||
1505 | ||
1506 | /* | |
ff26aa29 | 1507 | * Pager backend |
b801d8b2 JF |
1508 | */ |
1509 | ||
6b161b31 | 1510 | static bool |
fe7233c3 | 1511 | pager_draw(struct view *view, struct line *line, unsigned int lineno) |
b801d8b2 | 1512 | { |
fe7233c3 JF |
1513 | char *text = line->data; |
1514 | enum line_type type = line->type; | |
1515 | int textlen = strlen(text); | |
78c70acd | 1516 | int attr; |
b801d8b2 | 1517 | |
6706b2ba JF |
1518 | wmove(view->win, lineno, 0); |
1519 | ||
fd85fef1 | 1520 | if (view->offset + lineno == view->lineno) { |
8855ada4 | 1521 | if (type == LINE_COMMIT) { |
fe7233c3 | 1522 | string_copy(view->ref, text + 7); |
03a93dbb JF |
1523 | string_copy(ref_commit, view->ref); |
1524 | } | |
8855ada4 | 1525 | |
78c70acd | 1526 | type = LINE_CURSOR; |
6706b2ba | 1527 | wchgat(view->win, -1, 0, type, NULL); |
fd85fef1 JF |
1528 | } |
1529 | ||
78c70acd | 1530 | attr = get_line_attr(type); |
b801d8b2 | 1531 | wattrset(view->win, attr); |
b76c2afc | 1532 | |
6706b2ba JF |
1533 | if (opt_line_number || opt_tab_size < TABSIZE) { |
1534 | static char spaces[] = " "; | |
1535 | int col_offset = 0, col = 0; | |
1536 | ||
1537 | if (opt_line_number) { | |
1538 | unsigned long real_lineno = view->offset + lineno + 1; | |
82e78006 | 1539 | |
6706b2ba JF |
1540 | if (real_lineno == 1 || |
1541 | (real_lineno % opt_num_interval) == 0) { | |
1542 | wprintw(view->win, "%.*d", view->digits, real_lineno); | |
8855ada4 | 1543 | |
6706b2ba JF |
1544 | } else { |
1545 | waddnstr(view->win, spaces, | |
1546 | MIN(view->digits, STRING_SIZE(spaces))); | |
1547 | } | |
1548 | waddstr(view->win, ": "); | |
1549 | col_offset = view->digits + 2; | |
1550 | } | |
8855ada4 | 1551 | |
fe7233c3 | 1552 | while (text && col_offset + col < view->width) { |
6706b2ba | 1553 | int cols_max = view->width - col_offset - col; |
fe7233c3 | 1554 | char *pos = text; |
6706b2ba | 1555 | int cols; |
4c6fabc2 | 1556 | |
fe7233c3 JF |
1557 | if (*text == '\t') { |
1558 | text++; | |
6706b2ba | 1559 | assert(sizeof(spaces) > TABSIZE); |
fe7233c3 | 1560 | pos = spaces; |
6706b2ba | 1561 | cols = opt_tab_size - (col % opt_tab_size); |
82e78006 | 1562 | |
b76c2afc | 1563 | } else { |
fe7233c3 JF |
1564 | text = strchr(text, '\t'); |
1565 | cols = line ? text - pos : strlen(pos); | |
b76c2afc | 1566 | } |
6706b2ba | 1567 | |
fe7233c3 | 1568 | waddnstr(view->win, pos, MIN(cols, cols_max)); |
6706b2ba | 1569 | col += cols; |
b76c2afc | 1570 | } |
b76c2afc JF |
1571 | |
1572 | } else { | |
6706b2ba | 1573 | int col = 0, pos = 0; |
b801d8b2 | 1574 | |
fe7233c3 JF |
1575 | for (; pos < textlen && col < view->width; pos++, col++) |
1576 | if (text[pos] == '\t') | |
6706b2ba JF |
1577 | col += TABSIZE - (col % TABSIZE) - 1; |
1578 | ||
fe7233c3 | 1579 | waddnstr(view->win, text, pos); |
6706b2ba | 1580 | } |
2e8488b4 | 1581 | |
b801d8b2 JF |
1582 | return TRUE; |
1583 | } | |
1584 | ||
6b161b31 | 1585 | static bool |
fe7233c3 | 1586 | pager_read(struct view *view, struct line *prev, char *line) |
22f66b0a | 1587 | { |
6706b2ba JF |
1588 | /* Compress empty lines in the help view. */ |
1589 | if (view == VIEW(REQ_VIEW_HELP) && | |
fe7233c3 | 1590 | !*line && prev && !*((char *) prev->data)) |
6706b2ba JF |
1591 | return TRUE; |
1592 | ||
fe7233c3 JF |
1593 | view->line[view->lines].data = strdup(line); |
1594 | if (!view->line[view->lines].data) | |
22f66b0a JF |
1595 | return FALSE; |
1596 | ||
fe7233c3 JF |
1597 | view->line[view->lines].type = get_line_type(line); |
1598 | ||
22f66b0a JF |
1599 | view->lines++; |
1600 | return TRUE; | |
1601 | } | |
1602 | ||
6b161b31 | 1603 | static bool |
fe7233c3 | 1604 | pager_enter(struct view *view, struct line *line) |
6b161b31 | 1605 | { |
91e8e277 | 1606 | int split = 0; |
6b161b31 | 1607 | |
9fbbd28f JF |
1608 | if (line->type == LINE_COMMIT && |
1609 | (view == VIEW(REQ_VIEW_LOG) || | |
1610 | view == VIEW(REQ_VIEW_PAGER))) { | |
91e8e277 JF |
1611 | open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT); |
1612 | split = 1; | |
67e48ac5 JF |
1613 | } |
1614 | ||
91e8e277 JF |
1615 | /* Always scroll the view even if it was split. That way |
1616 | * you can use Enter to scroll through the log view and | |
1617 | * split open each commit diff. */ | |
1618 | scroll_view(view, REQ_SCROLL_LINE_DOWN); | |
1619 | ||
1620 | /* FIXME: A minor workaround. Scrolling the view will call report("") | |
9d82d824 JF |
1621 | * but if we are scrolling a non-current view this won't properly |
1622 | * update the view title. */ | |
91e8e277 JF |
1623 | if (split) |
1624 | update_view_title(view); | |
6b161b31 JF |
1625 | |
1626 | return TRUE; | |
1627 | } | |
1628 | ||
6b161b31 | 1629 | static struct view_ops pager_ops = { |
6734f6b9 | 1630 | "line", |
6b161b31 JF |
1631 | pager_draw, |
1632 | pager_read, | |
1633 | pager_enter, | |
1634 | }; | |
1635 | ||
80ce96ea | 1636 | |
ff26aa29 JF |
1637 | /* |
1638 | * Main view backend | |
1639 | */ | |
1640 | ||
1641 | struct commit { | |
1642 | char id[41]; /* SHA1 ID. */ | |
1643 | char title[75]; /* The first line of the commit message. */ | |
1644 | char author[75]; /* The author of the commit. */ | |
1645 | struct tm time; /* Date from the author ident. */ | |
1646 | struct ref **refs; /* Repository references; tags & branch heads. */ | |
1647 | }; | |
c34d9c9f | 1648 | |
6b161b31 | 1649 | static bool |
fe7233c3 | 1650 | main_draw(struct view *view, struct line *line, unsigned int lineno) |
22f66b0a | 1651 | { |
2e8488b4 | 1652 | char buf[DATE_COLS + 1]; |
fe7233c3 | 1653 | struct commit *commit = line->data; |
78c70acd | 1654 | enum line_type type; |
6706b2ba | 1655 | int col = 0; |
b76c2afc | 1656 | size_t timelen; |
10e290ee | 1657 | size_t authorlen; |
9989bf60 | 1658 | int trimmed = 1; |
22f66b0a | 1659 | |
4c6fabc2 JF |
1660 | if (!*commit->author) |
1661 | return FALSE; | |
22f66b0a | 1662 | |
6706b2ba JF |
1663 | wmove(view->win, lineno, col); |
1664 | ||
22f66b0a | 1665 | if (view->offset + lineno == view->lineno) { |
03a93dbb | 1666 | string_copy(view->ref, commit->id); |
49f2b43f | 1667 | string_copy(ref_commit, view->ref); |
78c70acd | 1668 | type = LINE_CURSOR; |
6706b2ba JF |
1669 | wattrset(view->win, get_line_attr(type)); |
1670 | wchgat(view->win, -1, 0, type, NULL); | |
1671 | ||
78c70acd | 1672 | } else { |
b76c2afc | 1673 | type = LINE_MAIN_COMMIT; |
6706b2ba | 1674 | wattrset(view->win, get_line_attr(LINE_MAIN_DATE)); |
b76c2afc JF |
1675 | } |
1676 | ||
4c6fabc2 | 1677 | timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time); |
b76c2afc | 1678 | waddnstr(view->win, buf, timelen); |
4c6fabc2 | 1679 | waddstr(view->win, " "); |
b76c2afc | 1680 | |
6706b2ba JF |
1681 | col += DATE_COLS; |
1682 | wmove(view->win, lineno, col); | |
1683 | if (type != LINE_CURSOR) | |
1684 | wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR)); | |
b76c2afc | 1685 | |
9989bf60 JF |
1686 | if (opt_utf8) { |
1687 | authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed); | |
1688 | } else { | |
1689 | authorlen = strlen(commit->author); | |
1690 | if (authorlen > AUTHOR_COLS - 2) { | |
1691 | authorlen = AUTHOR_COLS - 2; | |
1692 | trimmed = 1; | |
1693 | } | |
1694 | } | |
10e290ee JF |
1695 | |
1696 | if (trimmed) { | |
1697 | waddnstr(view->win, commit->author, authorlen); | |
6706b2ba JF |
1698 | if (type != LINE_CURSOR) |
1699 | wattrset(view->win, get_line_attr(LINE_MAIN_DELIM)); | |
b76c2afc JF |
1700 | waddch(view->win, '~'); |
1701 | } else { | |
1702 | waddstr(view->win, commit->author); | |
22f66b0a JF |
1703 | } |
1704 | ||
10e290ee | 1705 | col += AUTHOR_COLS; |
6706b2ba JF |
1706 | if (type != LINE_CURSOR) |
1707 | wattrset(view->win, A_NORMAL); | |
1708 | ||
1709 | mvwaddch(view->win, lineno, col, ACS_LTEE); | |
1710 | wmove(view->win, lineno, col + 2); | |
1711 | col += 2; | |
c34d9c9f JF |
1712 | |
1713 | if (commit->refs) { | |
1714 | size_t i = 0; | |
1715 | ||
1716 | do { | |
6706b2ba JF |
1717 | if (type == LINE_CURSOR) |
1718 | ; | |
1719 | else if (commit->refs[i]->tag) | |
c34d9c9f JF |
1720 | wattrset(view->win, get_line_attr(LINE_MAIN_TAG)); |
1721 | else | |
1722 | wattrset(view->win, get_line_attr(LINE_MAIN_REF)); | |
1723 | waddstr(view->win, "["); | |
1724 | waddstr(view->win, commit->refs[i]->name); | |
1725 | waddstr(view->win, "]"); | |
6706b2ba JF |
1726 | if (type != LINE_CURSOR) |
1727 | wattrset(view->win, A_NORMAL); | |
c34d9c9f | 1728 | waddstr(view->win, " "); |
6706b2ba | 1729 | col += strlen(commit->refs[i]->name) + STRING_SIZE("[] "); |
c34d9c9f JF |
1730 | } while (commit->refs[i++]->next); |
1731 | } | |
1732 | ||
6706b2ba JF |
1733 | if (type != LINE_CURSOR) |
1734 | wattrset(view->win, get_line_attr(type)); | |
1735 | ||
1736 | { | |
1737 | int titlelen = strlen(commit->title); | |
1738 | ||
1739 | if (col + titlelen > view->width) | |
1740 | titlelen = view->width - col; | |
1741 | ||
1742 | waddnstr(view->win, commit->title, titlelen); | |
1743 | } | |
22f66b0a JF |
1744 | |
1745 | return TRUE; | |
1746 | } | |
1747 | ||
4c6fabc2 | 1748 | /* Reads git log --pretty=raw output and parses it into the commit struct. */ |
6b161b31 | 1749 | static bool |
fe7233c3 | 1750 | main_read(struct view *view, struct line *prev, char *line) |
22f66b0a | 1751 | { |
78c70acd JF |
1752 | enum line_type type = get_line_type(line); |
1753 | struct commit *commit; | |
22f66b0a | 1754 | |
78c70acd JF |
1755 | switch (type) { |
1756 | case LINE_COMMIT: | |
22f66b0a JF |
1757 | commit = calloc(1, sizeof(struct commit)); |
1758 | if (!commit) | |
1759 | return FALSE; | |
1760 | ||
4c6fabc2 | 1761 | line += STRING_SIZE("commit "); |
b76c2afc | 1762 | |
fe7233c3 | 1763 | view->line[view->lines++].data = commit; |
82e78006 | 1764 | string_copy(commit->id, line); |
c34d9c9f | 1765 | commit->refs = get_refs(commit->id); |
78c70acd | 1766 | break; |
22f66b0a | 1767 | |
8855ada4 | 1768 | case LINE_AUTHOR: |
b76c2afc | 1769 | { |
4c6fabc2 | 1770 | char *ident = line + STRING_SIZE("author "); |
b76c2afc JF |
1771 | char *end = strchr(ident, '<'); |
1772 | ||
fe7233c3 JF |
1773 | if (!prev) |
1774 | break; | |
1775 | ||
1776 | commit = prev->data; | |
1777 | ||
b76c2afc JF |
1778 | if (end) { |
1779 | for (; end > ident && isspace(end[-1]); end--) ; | |
1780 | *end = 0; | |
1781 | } | |
1782 | ||
82e78006 | 1783 | string_copy(commit->author, ident); |
b76c2afc | 1784 | |
4c6fabc2 | 1785 | /* Parse epoch and timezone */ |
b76c2afc JF |
1786 | if (end) { |
1787 | char *secs = strchr(end + 1, '>'); | |
1788 | char *zone; | |
1789 | time_t time; | |
1790 | ||
1791 | if (!secs || secs[1] != ' ') | |
1792 | break; | |
1793 | ||
1794 | secs += 2; | |
1795 | time = (time_t) atol(secs); | |
1796 | zone = strchr(secs, ' '); | |
4c6fabc2 | 1797 | if (zone && strlen(zone) == STRING_SIZE(" +0700")) { |
b76c2afc JF |
1798 | long tz; |
1799 | ||
1800 | zone++; | |
1801 | tz = ('0' - zone[1]) * 60 * 60 * 10; | |
1802 | tz += ('0' - zone[2]) * 60 * 60; | |
1803 | tz += ('0' - zone[3]) * 60; | |
1804 | tz += ('0' - zone[4]) * 60; | |
1805 | ||
1806 | if (zone[0] == '-') | |
1807 | tz = -tz; | |
1808 | ||
1809 | time -= tz; | |
1810 | } | |
1811 | gmtime_r(&time, &commit->time); | |
1812 | } | |
1813 | break; | |
1814 | } | |
78c70acd | 1815 | default: |
fe7233c3 | 1816 | if (!prev) |
2e8488b4 JF |
1817 | break; |
1818 | ||
fe7233c3 JF |
1819 | commit = prev->data; |
1820 | ||
2e8488b4 | 1821 | /* Fill in the commit title if it has not already been set. */ |
2e8488b4 JF |
1822 | if (commit->title[0]) |
1823 | break; | |
1824 | ||
1825 | /* Require titles to start with a non-space character at the | |
1826 | * offset used by git log. */ | |
eb98559e JF |
1827 | /* FIXME: More gracefull handling of titles; append "..." to |
1828 | * shortened titles, etc. */ | |
2e8488b4 | 1829 | if (strncmp(line, " ", 4) || |
eb98559e | 1830 | isspace(line[4])) |
82e78006 JF |
1831 | break; |
1832 | ||
1833 | string_copy(commit->title, line + 4); | |
22f66b0a JF |
1834 | } |
1835 | ||
1836 | return TRUE; | |
1837 | } | |
1838 | ||
6b161b31 | 1839 | static bool |
fe7233c3 | 1840 | main_enter(struct view *view, struct line *line) |
b801d8b2 | 1841 | { |
b3a54cba JF |
1842 | enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT; |
1843 | ||
1844 | open_view(view, REQ_VIEW_DIFF, flags); | |
6b161b31 | 1845 | return TRUE; |
b801d8b2 JF |
1846 | } |
1847 | ||
6b161b31 | 1848 | static struct view_ops main_ops = { |
6734f6b9 | 1849 | "commit", |
6b161b31 JF |
1850 | main_draw, |
1851 | main_read, | |
1852 | main_enter, | |
1853 | }; | |
2e8488b4 | 1854 | |
c34d9c9f | 1855 | |
468876c9 JF |
1856 | /** |
1857 | * KEYS | |
1858 | * ---- | |
1859 | * Below the default key bindings are shown. | |
1860 | **/ | |
1861 | ||
1862 | struct keymap { | |
1863 | int alias; | |
1864 | int request; | |
1865 | }; | |
1866 | ||
3a91b75e | 1867 | static struct keymap keymap[] = { |
468876c9 JF |
1868 | /** |
1869 | * View switching | |
1870 | * ~~~~~~~~~~~~~~ | |
1871 | * m:: | |
1872 | * Switch to main view. | |
1873 | * d:: | |
1874 | * Switch to diff view. | |
1875 | * l:: | |
1876 | * Switch to log view. | |
1877 | * p:: | |
1878 | * Switch to pager view. | |
1879 | * h:: | |
1880 | * Show man page. | |
b3a54cba JF |
1881 | **/ |
1882 | { 'm', REQ_VIEW_MAIN }, | |
1883 | { 'd', REQ_VIEW_DIFF }, | |
1884 | { 'l', REQ_VIEW_LOG }, | |
1885 | { 'p', REQ_VIEW_PAGER }, | |
1886 | { 'h', REQ_VIEW_HELP }, | |
1887 | ||
1888 | /** | |
1889 | * View manipulation | |
1890 | * ~~~~~~~~~~~~~~~~~ | |
4f9b667a | 1891 | * q:: |
f6da0b66 JF |
1892 | * Close view, if multiple views are open it will jump back to the |
1893 | * previous view in the view stack. If it is the last open view it | |
1894 | * will quit. Use 'Q' to quit all views at once. | |
67e48ac5 JF |
1895 | * Enter:: |
1896 | * This key is "context sensitive" depending on what view you are | |
1897 | * currently in. When in log view on a commit line or in the main | |
1898 | * view, split the view and show the commit diff. In the diff view | |
1899 | * pressing Enter will simply scroll the view one line down. | |
468876c9 JF |
1900 | * Tab:: |
1901 | * Switch to next view. | |
b3a54cba JF |
1902 | * Up:: |
1903 | * This key is "context sensitive" and will move the cursor one | |
1904 | * line up. However, uf you opened a diff view from the main view | |
1905 | * (split- or full-screen) it will change the cursor to point to | |
1906 | * the previous commit in the main view and update the diff view | |
1907 | * to display it. | |
1908 | * Down:: | |
1909 | * Similar to 'Up' but will move down. | |
468876c9 | 1910 | **/ |
4f9b667a | 1911 | { 'q', REQ_VIEW_CLOSE }, |
468876c9 JF |
1912 | { KEY_TAB, REQ_VIEW_NEXT }, |
1913 | { KEY_RETURN, REQ_ENTER }, | |
b3a54cba JF |
1914 | { KEY_UP, REQ_PREVIOUS }, |
1915 | { KEY_DOWN, REQ_NEXT }, | |
468876c9 JF |
1916 | |
1917 | /** | |
1918 | * Cursor navigation | |
1919 | * ~~~~~~~~~~~~~~~~~ | |
b3a54cba | 1920 | * j:: |
57bdf034 | 1921 | * Move cursor one line up. |
468876c9 | 1922 | * k:: |
b3a54cba | 1923 | * Move cursor one line down. |
468876c9 | 1924 | * PgUp:: |
c622eefa | 1925 | * b:: |
0df811cb | 1926 | * -:: |
57bdf034 | 1927 | * Move cursor one page up. |
468876c9 | 1928 | * PgDown:: |
c622eefa | 1929 | * Space:: |
468876c9 JF |
1930 | * Move cursor one page down. |
1931 | * Home:: | |
1932 | * Jump to first line. | |
1933 | * End:: | |
1934 | * Jump to last line. | |
1935 | **/ | |
b3a54cba JF |
1936 | { 'k', REQ_MOVE_UP }, |
1937 | { 'j', REQ_MOVE_DOWN }, | |
468876c9 JF |
1938 | { KEY_HOME, REQ_MOVE_FIRST_LINE }, |
1939 | { KEY_END, REQ_MOVE_LAST_LINE }, | |
1940 | { KEY_NPAGE, REQ_MOVE_PAGE_DOWN }, | |
c622eefa | 1941 | { ' ', REQ_MOVE_PAGE_DOWN }, |
468876c9 | 1942 | { KEY_PPAGE, REQ_MOVE_PAGE_UP }, |
c622eefa | 1943 | { 'b', REQ_MOVE_PAGE_UP }, |
0df811cb | 1944 | { '-', REQ_MOVE_PAGE_UP }, |
468876c9 JF |
1945 | |
1946 | /** | |
1947 | * Scrolling | |
1948 | * ~~~~~~~~~ | |
1949 | * Insert:: | |
1950 | * Scroll view one line up. | |
1951 | * Delete:: | |
1952 | * Scroll view one line down. | |
1953 | * w:: | |
1954 | * Scroll view one page up. | |
1955 | * s:: | |
1956 | * Scroll view one page down. | |
1957 | **/ | |
1958 | { KEY_IC, REQ_SCROLL_LINE_UP }, | |
1959 | { KEY_DC, REQ_SCROLL_LINE_DOWN }, | |
1960 | { 'w', REQ_SCROLL_PAGE_UP }, | |
1961 | { 's', REQ_SCROLL_PAGE_DOWN }, | |
1962 | ||
1963 | /** | |
1964 | * Misc | |
1965 | * ~~~~ | |
d9d1c722 JF |
1966 | * Q:: |
1967 | * Quit. | |
468876c9 JF |
1968 | * r:: |
1969 | * Redraw screen. | |
1970 | * z:: | |
1971 | * Stop all background loading. This can be useful if you use | |
1972 | * tig(1) in a repository with a long history without limiting | |
0721c53a | 1973 | * the revision log. |
468876c9 JF |
1974 | * v:: |
1975 | * Show version. | |
1976 | * n:: | |
1977 | * Toggle line numbers on/off. | |
1978 | * ':':: | |
1979 | * Open prompt. This allows you to specify what git command | |
1980 | * to run. Example: | |
1981 | * | |
1982 | * :log -p | |
1983 | **/ | |
d9d1c722 | 1984 | { 'Q', REQ_QUIT }, |
468876c9 JF |
1985 | { 'z', REQ_STOP_LOADING }, |
1986 | { 'v', REQ_SHOW_VERSION }, | |
1987 | { 'r', REQ_SCREEN_REDRAW }, | |
1988 | { 'n', REQ_TOGGLE_LINE_NUMBERS }, | |
1989 | { ':', REQ_PROMPT }, | |
1990 | ||
1991 | /* wgetch() with nodelay() enabled returns ERR when there's no input. */ | |
1992 | { ERR, REQ_SCREEN_UPDATE }, | |
1993 | ||
1994 | /* Use the ncurses SIGWINCH handler. */ | |
1995 | { KEY_RESIZE, REQ_SCREEN_RESIZE }, | |
1996 | }; | |
1997 | ||
1998 | static enum request | |
1999 | get_request(int key) | |
2000 | { | |
2001 | int i; | |
2002 | ||
2003 | for (i = 0; i < ARRAY_SIZE(keymap); i++) | |
2004 | if (keymap[i].alias == key) | |
2005 | return keymap[i].request; | |
2006 | ||
2007 | return (enum request) key; | |
2008 | } | |
2009 | ||
2010 | ||
6b161b31 | 2011 | /* |
10e290ee JF |
2012 | * Unicode / UTF-8 handling |
2013 | * | |
2014 | * NOTE: Much of the following code for dealing with unicode is derived from | |
2015 | * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is | |
2016 | * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28. | |
2017 | */ | |
2018 | ||
2019 | /* I've (over)annotated a lot of code snippets because I am not entirely | |
2020 | * confident that the approach taken by this small UTF-8 interface is correct. | |
2021 | * --jonas */ | |
2022 | ||
2023 | static inline int | |
2024 | unicode_width(unsigned long c) | |
2025 | { | |
2026 | if (c >= 0x1100 && | |
2027 | (c <= 0x115f /* Hangul Jamo */ | |
2028 | || c == 0x2329 | |
2029 | || c == 0x232a | |
2030 | || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f) | |
f97f4012 | 2031 | /* CJK ... Yi */ |
10e290ee JF |
2032 | || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */ |
2033 | || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */ | |
2034 | || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */ | |
2035 | || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */ | |
2036 | || (c >= 0xffe0 && c <= 0xffe6) | |
2037 | || (c >= 0x20000 && c <= 0x2fffd) | |
2038 | || (c >= 0x30000 && c <= 0x3fffd))) | |
2039 | return 2; | |
2040 | ||
2041 | return 1; | |
2042 | } | |
2043 | ||
2044 | /* Number of bytes used for encoding a UTF-8 character indexed by first byte. | |
2045 | * Illegal bytes are set one. */ | |
2046 | static const unsigned char utf8_bytes[256] = { | |
2047 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, | |
2048 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, | |
2049 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, | |
2050 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, | |
2051 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, | |
2052 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, | |
2053 | 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, | |
2054 | 3,3,3,3,3,3,3,3, 3,3,3,3,3,3,3,3, 4,4,4,4,4,4,4,4, 5,5,5,5,6,6,1,1, | |
2055 | }; | |
2056 | ||
2057 | /* Decode UTF-8 multi-byte representation into a unicode character. */ | |
2058 | static inline unsigned long | |
2059 | utf8_to_unicode(const char *string, size_t length) | |
2060 | { | |
2061 | unsigned long unicode; | |
2062 | ||
2063 | switch (length) { | |
2064 | case 1: | |
2065 | unicode = string[0]; | |
2066 | break; | |
2067 | case 2: | |
2068 | unicode = (string[0] & 0x1f) << 6; | |
2069 | unicode += (string[1] & 0x3f); | |
2070 | break; | |
2071 | case 3: | |
2072 | unicode = (string[0] & 0x0f) << 12; | |
2073 | unicode += ((string[1] & 0x3f) << 6); | |
2074 | unicode += (string[2] & 0x3f); | |
2075 | break; | |
2076 | case 4: | |
2077 | unicode = (string[0] & 0x0f) << 18; | |
2078 | unicode += ((string[1] & 0x3f) << 12); | |
2079 | unicode += ((string[2] & 0x3f) << 6); | |
2080 | unicode += (string[3] & 0x3f); | |
2081 | break; | |
2082 | case 5: | |
2083 | unicode = (string[0] & 0x0f) << 24; | |
2084 | unicode += ((string[1] & 0x3f) << 18); | |
2085 | unicode += ((string[2] & 0x3f) << 12); | |
2086 | unicode += ((string[3] & 0x3f) << 6); | |
2087 | unicode += (string[4] & 0x3f); | |
2088 | break; | |
68b6e0eb | 2089 | case 6: |
10e290ee JF |
2090 | unicode = (string[0] & 0x01) << 30; |
2091 | unicode += ((string[1] & 0x3f) << 24); | |
2092 | unicode += ((string[2] & 0x3f) << 18); | |
2093 | unicode += ((string[3] & 0x3f) << 12); | |
2094 | unicode += ((string[4] & 0x3f) << 6); | |
2095 | unicode += (string[5] & 0x3f); | |
2096 | break; | |
2097 | default: | |
2098 | die("Invalid unicode length"); | |
2099 | } | |
2100 | ||
2101 | /* Invalid characters could return the special 0xfffd value but NUL | |
2102 | * should be just as good. */ | |
2103 | return unicode > 0xffff ? 0 : unicode; | |
2104 | } | |
2105 | ||
2106 | /* Calculates how much of string can be shown within the given maximum width | |
2107 | * and sets trimmed parameter to non-zero value if all of string could not be | |
2108 | * shown. | |
2109 | * | |
2110 | * Additionally, adds to coloffset how many many columns to move to align with | |
2111 | * the expected position. Takes into account how multi-byte and double-width | |
2112 | * characters will effect the cursor position. | |
2113 | * | |
2114 | * Returns the number of bytes to output from string to satisfy max_width. */ | |
2115 | static size_t | |
2116 | utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed) | |
2117 | { | |
2118 | const char *start = string; | |
2119 | const char *end = strchr(string, '\0'); | |
2120 | size_t mbwidth = 0; | |
2121 | size_t width = 0; | |
2122 | ||
2123 | *trimmed = 0; | |
2124 | ||
2125 | while (string < end) { | |
2126 | int c = *(unsigned char *) string; | |
2127 | unsigned char bytes = utf8_bytes[c]; | |
2128 | size_t ucwidth; | |
2129 | unsigned long unicode; | |
2130 | ||
2131 | if (string + bytes > end) | |
2132 | break; | |
2133 | ||
2134 | /* Change representation to figure out whether | |
2135 | * it is a single- or double-width character. */ | |
2136 | ||
2137 | unicode = utf8_to_unicode(string, bytes); | |
2138 | /* FIXME: Graceful handling of invalid unicode character. */ | |
2139 | if (!unicode) | |
2140 | break; | |
2141 | ||
2142 | ucwidth = unicode_width(unicode); | |
2143 | width += ucwidth; | |
2144 | if (width > max_width) { | |
2145 | *trimmed = 1; | |
2146 | break; | |
2147 | } | |
2148 | ||
2149 | /* The column offset collects the differences between the | |
2150 | * number of bytes encoding a character and the number of | |
2151 | * columns will be used for rendering said character. | |
2152 | * | |
2153 | * So if some character A is encoded in 2 bytes, but will be | |
2154 | * represented on the screen using only 1 byte this will and up | |
2155 | * adding 1 to the multi-byte column offset. | |
2156 | * | |
2157 | * Assumes that no double-width character can be encoding in | |
2158 | * less than two bytes. */ | |
2159 | if (bytes > ucwidth) | |
2160 | mbwidth += bytes - ucwidth; | |
2161 | ||
2162 | string += bytes; | |
2163 | } | |
2164 | ||
2165 | *coloffset += mbwidth; | |
2166 | ||
2167 | return string - start; | |
2168 | } | |
2169 | ||
2170 | ||
2171 | /* | |
6b161b31 JF |
2172 | * Status management |
2173 | */ | |
2e8488b4 | 2174 | |
8855ada4 | 2175 | /* Whether or not the curses interface has been initialized. */ |
68b6e0eb | 2176 | static bool cursed = FALSE; |
8855ada4 | 2177 | |
6b161b31 JF |
2178 | /* The status window is used for polling keystrokes. */ |
2179 | static WINDOW *status_win; | |
4a2909a7 | 2180 | |
2e8488b4 | 2181 | /* Update status and title window. */ |
4a2909a7 JF |
2182 | static void |
2183 | report(const char *msg, ...) | |
2184 | { | |
6706b2ba JF |
2185 | static bool empty = TRUE; |
2186 | struct view *view = display[current_view]; | |
b76c2afc | 2187 | |
6706b2ba JF |
2188 | if (!empty || *msg) { |
2189 | va_list args; | |
4a2909a7 | 2190 | |
6706b2ba | 2191 | va_start(args, msg); |
4b76734f | 2192 | |
6706b2ba JF |
2193 | werase(status_win); |
2194 | wmove(status_win, 0, 0); | |
2195 | if (*msg) { | |
2196 | vwprintw(status_win, msg, args); | |
2197 | empty = FALSE; | |
2198 | } else { | |
2199 | empty = TRUE; | |
2200 | } | |
2201 | wrefresh(status_win); | |
b801d8b2 | 2202 | |
6706b2ba JF |
2203 | va_end(args); |
2204 | } | |
2205 | ||
2206 | update_view_title(view); | |
2207 | ||
2208 | /* Move the cursor to the right-most column of the cursor line. | |
2209 | * | |
2210 | * XXX: This could turn out to be a bit expensive, but it ensures that | |
2211 | * the cursor does not jump around. */ | |
2212 | if (view->lines) { | |
2213 | wmove(view->win, view->lineno - view->offset, view->width - 1); | |
2214 | wrefresh(view->win); | |
2215 | } | |
b801d8b2 JF |
2216 | } |
2217 | ||
6b161b31 JF |
2218 | /* Controls when nodelay should be in effect when polling user input. */ |
2219 | static void | |
1ba2ae4b | 2220 | set_nonblocking_input(bool loading) |
b801d8b2 | 2221 | { |
6706b2ba | 2222 | static unsigned int loading_views; |
b801d8b2 | 2223 | |
6706b2ba JF |
2224 | if ((loading == FALSE && loading_views-- == 1) || |
2225 | (loading == TRUE && loading_views++ == 0)) | |
1ba2ae4b | 2226 | nodelay(status_win, loading); |
6b161b31 JF |
2227 | } |
2228 | ||
2229 | static void | |
2230 | init_display(void) | |
2231 | { | |
2232 | int x, y; | |
b76c2afc | 2233 | |
6908bdbd JF |
2234 | /* Initialize the curses library */ |
2235 | if (isatty(STDIN_FILENO)) { | |
8855ada4 | 2236 | cursed = !!initscr(); |
6908bdbd JF |
2237 | } else { |
2238 | /* Leave stdin and stdout alone when acting as a pager. */ | |
2239 | FILE *io = fopen("/dev/tty", "r+"); | |
2240 | ||
8855ada4 | 2241 | cursed = !!newterm(NULL, io, io); |
6908bdbd JF |
2242 | } |
2243 | ||
8855ada4 JF |
2244 | if (!cursed) |
2245 | die("Failed to initialize curses"); | |
2246 | ||
2e8488b4 JF |
2247 | nonl(); /* Tell curses not to do NL->CR/NL on output */ |
2248 | cbreak(); /* Take input chars one at a time, no wait for \n */ | |
2249 | noecho(); /* Don't echo input */ | |
b801d8b2 | 2250 | leaveok(stdscr, TRUE); |
b801d8b2 JF |
2251 | |
2252 | if (has_colors()) | |
2253 | init_colors(); | |
2254 | ||
2255 | getmaxyx(stdscr, y, x); | |
2256 | status_win = newwin(1, 0, y - 1, 0); | |
2257 | if (!status_win) | |
2258 | die("Failed to create status window"); | |
2259 | ||
2260 | /* Enable keyboard mapping */ | |
2261 | keypad(status_win, TRUE); | |
78c70acd | 2262 | wbkgdset(status_win, get_line_attr(LINE_STATUS)); |
6b161b31 JF |
2263 | } |
2264 | ||
c34d9c9f JF |
2265 | |
2266 | /* | |
2267 | * Repository references | |
2268 | */ | |
2269 | ||
2270 | static struct ref *refs; | |
3a91b75e | 2271 | static size_t refs_size; |
c34d9c9f | 2272 | |
1307df1a JF |
2273 | /* Id <-> ref store */ |
2274 | static struct ref ***id_refs; | |
2275 | static size_t id_refs_size; | |
2276 | ||
c34d9c9f JF |
2277 | static struct ref ** |
2278 | get_refs(char *id) | |
2279 | { | |
1307df1a JF |
2280 | struct ref ***tmp_id_refs; |
2281 | struct ref **ref_list = NULL; | |
2282 | size_t ref_list_size = 0; | |
c34d9c9f JF |
2283 | size_t i; |
2284 | ||
1307df1a JF |
2285 | for (i = 0; i < id_refs_size; i++) |
2286 | if (!strcmp(id, id_refs[i][0]->id)) | |
2287 | return id_refs[i]; | |
2288 | ||
2289 | tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs)); | |
2290 | if (!tmp_id_refs) | |
2291 | return NULL; | |
2292 | ||
2293 | id_refs = tmp_id_refs; | |
2294 | ||
c34d9c9f JF |
2295 | for (i = 0; i < refs_size; i++) { |
2296 | struct ref **tmp; | |
2297 | ||
2298 | if (strcmp(id, refs[i].id)) | |
2299 | continue; | |
2300 | ||
1307df1a | 2301 | tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list)); |
c34d9c9f | 2302 | if (!tmp) { |
1307df1a JF |
2303 | if (ref_list) |
2304 | free(ref_list); | |
c34d9c9f JF |
2305 | return NULL; |
2306 | } | |
2307 | ||
1307df1a JF |
2308 | ref_list = tmp; |
2309 | if (ref_list_size > 0) | |
2310 | ref_list[ref_list_size - 1]->next = 1; | |
2311 | ref_list[ref_list_size] = &refs[i]; | |
3af8774e JF |
2312 | |
2313 | /* XXX: The properties of the commit chains ensures that we can | |
2314 | * safely modify the shared ref. The repo references will | |
2315 | * always be similar for the same id. */ | |
1307df1a JF |
2316 | ref_list[ref_list_size]->next = 0; |
2317 | ref_list_size++; | |
c34d9c9f JF |
2318 | } |
2319 | ||
1307df1a JF |
2320 | if (ref_list) |
2321 | id_refs[id_refs_size++] = ref_list; | |
2322 | ||
2323 | return ref_list; | |
c34d9c9f JF |
2324 | } |
2325 | ||
2326 | static int | |
d0cea5f9 | 2327 | read_ref(char *id, int idlen, char *name, int namelen) |
c34d9c9f | 2328 | { |
d0cea5f9 JF |
2329 | struct ref *ref; |
2330 | bool tag = FALSE; | |
2331 | bool tag_commit = FALSE; | |
2332 | ||
2333 | /* Commits referenced by tags has "^{}" appended. */ | |
2334 | if (name[namelen - 1] == '}') { | |
2335 | while (namelen > 0 && name[namelen] != '^') | |
2336 | namelen--; | |
2337 | if (namelen > 0) | |
2338 | tag_commit = TRUE; | |
2339 | name[namelen] = 0; | |
2340 | } | |
c34d9c9f | 2341 | |
d0cea5f9 JF |
2342 | if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) { |
2343 | if (!tag_commit) | |
2344 | return OK; | |
2345 | name += STRING_SIZE("refs/tags/"); | |
2346 | tag = TRUE; | |
c34d9c9f | 2347 | |
d0cea5f9 JF |
2348 | } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) { |
2349 | name += STRING_SIZE("refs/heads/"); | |
c34d9c9f | 2350 | |
d0cea5f9 JF |
2351 | } else if (!strcmp(name, "HEAD")) { |
2352 | return OK; | |
2353 | } | |
6706b2ba | 2354 | |
d0cea5f9 JF |
2355 | refs = realloc(refs, sizeof(*refs) * (refs_size + 1)); |
2356 | if (!refs) | |
2357 | return ERR; | |
c34d9c9f | 2358 | |
d0cea5f9 JF |
2359 | ref = &refs[refs_size++]; |
2360 | ref->name = strdup(name); | |
2361 | if (!ref->name) | |
2362 | return ERR; | |
3af8774e | 2363 | |
d0cea5f9 JF |
2364 | ref->tag = tag; |
2365 | string_copy(ref->id, id); | |
3af8774e | 2366 | |
d0cea5f9 JF |
2367 | return OK; |
2368 | } | |
c34d9c9f | 2369 | |
d0cea5f9 JF |
2370 | static int |
2371 | load_refs(void) | |
2372 | { | |
2373 | const char *cmd_env = getenv("TIG_LS_REMOTE"); | |
2374 | const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE; | |
c34d9c9f | 2375 | |
d0cea5f9 JF |
2376 | return read_properties(cmd, '\t', read_ref); |
2377 | } | |
c34d9c9f | 2378 | |
d0cea5f9 JF |
2379 | static int |
2380 | read_config_option(char *name, int namelen, char *value, int valuelen) | |
2381 | { | |
2382 | if (!strcmp(name, "i18n.commitencoding")) { | |
2383 | string_copy(opt_encoding, value); | |
c34d9c9f JF |
2384 | } |
2385 | ||
c34d9c9f JF |
2386 | return OK; |
2387 | } | |
2388 | ||
4670cf89 JF |
2389 | static int |
2390 | load_config(void) | |
2391 | { | |
d0cea5f9 JF |
2392 | return read_properties("git repo-config --list", '=', |
2393 | read_config_option); | |
2394 | } | |
2395 | ||
2396 | static int | |
2397 | read_properties(const char *cmd, int separator, | |
2398 | int (*read_property)(char *, int, char *, int)) | |
2399 | { | |
2400 | FILE *pipe = popen(cmd, "r"); | |
4670cf89 JF |
2401 | char buffer[BUFSIZ]; |
2402 | char *name; | |
d0cea5f9 | 2403 | int state = OK; |
4670cf89 JF |
2404 | |
2405 | if (!pipe) | |
2406 | return ERR; | |
2407 | ||
d0cea5f9 JF |
2408 | while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) { |
2409 | char *value = strchr(name, separator); | |
2410 | int namelen; | |
2411 | int valuelen; | |
4670cf89 | 2412 | |
d0cea5f9 JF |
2413 | if (value) { |
2414 | namelen = value - name; | |
2415 | *value++ = 0; | |
2416 | valuelen = strlen(value); | |
2417 | if (valuelen > 0) | |
2418 | value[valuelen - 1] = 0; | |
4670cf89 | 2419 | |
d0cea5f9 JF |
2420 | } else { |
2421 | namelen = strlen(name); | |
2422 | value = ""; | |
2423 | valuelen = 0; | |
4670cf89 | 2424 | } |
d0cea5f9 | 2425 | |
9d82d824 JF |
2426 | if (namelen) |
2427 | state = read_property(name, namelen, value, valuelen); | |
4670cf89 JF |
2428 | } |
2429 | ||
d0cea5f9 JF |
2430 | if (state != ERR && ferror(pipe)) |
2431 | state = ERR; | |
4670cf89 JF |
2432 | |
2433 | pclose(pipe); | |
2434 | ||
d0cea5f9 | 2435 | return state; |
4670cf89 JF |
2436 | } |
2437 | ||
d0cea5f9 | 2438 | |
6b161b31 JF |
2439 | /* |
2440 | * Main | |
2441 | */ | |
2442 | ||
b5c9e67f TH |
2443 | #if __GNUC__ >= 3 |
2444 | #define __NORETURN __attribute__((__noreturn__)) | |
2445 | #else | |
2446 | #define __NORETURN | |
2447 | #endif | |
2448 | ||
2449 | static void __NORETURN | |
6b161b31 JF |
2450 | quit(int sig) |
2451 | { | |
8855ada4 JF |
2452 | /* XXX: Restore tty modes and let the OS cleanup the rest! */ |
2453 | if (cursed) | |
2454 | endwin(); | |
6b161b31 JF |
2455 | exit(0); |
2456 | } | |
2457 | ||
c6704a4e JF |
2458 | static void __NORETURN |
2459 | die(const char *err, ...) | |
6b161b31 JF |
2460 | { |
2461 | va_list args; | |
2462 | ||
2463 | endwin(); | |
2464 | ||
2465 | va_start(args, err); | |
2466 | fputs("tig: ", stderr); | |
2467 | vfprintf(stderr, err, args); | |
2468 | fputs("\n", stderr); | |
2469 | va_end(args); | |
2470 | ||
2471 | exit(1); | |
2472 | } | |
2473 | ||
2474 | int | |
2475 | main(int argc, char *argv[]) | |
2476 | { | |
1ba2ae4b | 2477 | struct view *view; |
6b161b31 | 2478 | enum request request; |
1ba2ae4b | 2479 | size_t i; |
6b161b31 JF |
2480 | |
2481 | signal(SIGINT, quit); | |
2482 | ||
afdc35b3 JF |
2483 | /* Load the repo config file first so options can be overwritten from |
2484 | * the command line. */ | |
2485 | if (load_config() == ERR) | |
2486 | die("Failed to load repo config."); | |
2487 | ||
8855ada4 | 2488 | if (!parse_options(argc, argv)) |
6b161b31 JF |
2489 | return 0; |
2490 | ||
c34d9c9f JF |
2491 | if (load_refs() == ERR) |
2492 | die("Failed to load refs."); | |
2493 | ||
7bb55251 JF |
2494 | /* Require a git repository unless when running in pager mode. */ |
2495 | if (refs_size == 0 && opt_request != REQ_VIEW_PAGER) | |
2496 | die("Not a git repository"); | |
2497 | ||
1ba2ae4b JF |
2498 | for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++) |
2499 | view->cmd_env = getenv(view->cmd_env); | |
2500 | ||
6b161b31 JF |
2501 | request = opt_request; |
2502 | ||
2503 | init_display(); | |
b801d8b2 JF |
2504 | |
2505 | while (view_driver(display[current_view], request)) { | |
6b161b31 | 2506 | int key; |
b801d8b2 JF |
2507 | int i; |
2508 | ||
6b161b31 JF |
2509 | foreach_view (view, i) |
2510 | update_view(view); | |
b801d8b2 JF |
2511 | |
2512 | /* Refresh, accept single keystroke of input */ | |
6b161b31 JF |
2513 | key = wgetch(status_win); |
2514 | request = get_request(key); | |
03a93dbb | 2515 | |
6706b2ba | 2516 | /* Some low-level request handling. This keeps access to |
fac7db6c JF |
2517 | * status_win restricted. */ |
2518 | switch (request) { | |
2519 | case REQ_PROMPT: | |
6908bdbd JF |
2520 | report(":"); |
2521 | /* Temporarily switch to line-oriented and echoed | |
2522 | * input. */ | |
03a93dbb JF |
2523 | nocbreak(); |
2524 | echo(); | |
49f2b43f JF |
2525 | |
2526 | if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) { | |
2527 | memcpy(opt_cmd, "git ", 4); | |
2528 | opt_request = REQ_VIEW_PAGER; | |
2529 | } else { | |
2530 | request = ERR; | |
2531 | } | |
2532 | ||
6908bdbd JF |
2533 | noecho(); |
2534 | cbreak(); | |
fac7db6c JF |
2535 | break; |
2536 | ||
2537 | case REQ_SCREEN_RESIZE: | |
2538 | { | |
2539 | int height, width; | |
2540 | ||
2541 | getmaxyx(stdscr, height, width); | |
2542 | ||
2543 | /* Resize the status view and let the view driver take | |
2544 | * care of resizing the displayed views. */ | |
2545 | wresize(status_win, 1, width); | |
2546 | mvwin(status_win, height - 1, 0); | |
2547 | wrefresh(status_win); | |
2548 | break; | |
2549 | } | |
2550 | default: | |
2551 | break; | |
03a93dbb | 2552 | } |
b801d8b2 JF |
2553 | } |
2554 | ||
2555 | quit(0); | |
2556 | ||
2557 | return 0; | |
2558 | } | |
2559 | ||
2560 | /** | |
0721c53a | 2561 | * [[refspec]] |
3a11b38f JF |
2562 | * Revision specification |
2563 | * ---------------------- | |
0721c53a | 2564 | * This section describes various ways to specify what revisions to display |
3a11b38f JF |
2565 | * or otherwise limit the view to. tig(1) does not itself parse the described |
2566 | * revision options so refer to the relevant git man pages for futher | |
2567 | * information. Relevant man pages besides git-log(1) are git-diff(1) and | |
2568 | * git-rev-list(1). | |
468876c9 | 2569 | * |
3a11b38f JF |
2570 | * You can tune the interaction with git by making use of the options |
2571 | * explained in this section. For example, by configuring the environment | |
2572 | * variables described in the <<view-commands, "View commands">> section. | |
2573 | * | |
2574 | * Limit by path name | |
2575 | * ~~~~~~~~~~~~~~~~~~ | |
ab46037d JF |
2576 | * If you are interested only in those revisions that made changes to a |
2577 | * specific file (or even several files) list the files like this: | |
2578 | * | |
c760e6ba | 2579 | * $ tig log Makefile README |
ab46037d JF |
2580 | * |
2581 | * To avoid ambiguity with repository references such as tag name, be sure | |
2582 | * to separate file names from other git options using "\--". So if you | |
2583 | * have a file named 'master' it will clash with the reference named | |
2584 | * 'master', and thus you will have to use: | |
2585 | * | |
1b4b0bd9 | 2586 | * $ tig log -- master |
ab46037d JF |
2587 | * |
2588 | * NOTE: For the main view, avoiding ambiguity will in some cases require | |
2589 | * you to specify two "\--" options. The first will make tig(1) stop | |
2590 | * option processing and the latter will be passed to git log. | |
2591 | * | |
468876c9 JF |
2592 | * Limit by date or number |
2593 | * ~~~~~~~~~~~~~~~~~~~~~~~ | |
2594 | * To speed up interaction with git, you can limit the amount of commits | |
2595 | * to show both for the log and main view. Either limit by date using | |
2596 | * e.g. `--since=1.month` or limit by the number of commits using `-n400`. | |
2597 | * | |
3a11b38f JF |
2598 | * If you are only interested in changed that happened between two dates |
2599 | * you can use: | |
2600 | * | |
c760e6ba | 2601 | * $ tig -- --after="May 5th" --before="2006-05-16 15:44" |
468876c9 | 2602 | * |
c760e6ba JF |
2603 | * NOTE: If you want to avoid having to quote dates containing spaces you |
2604 | * can use "." instead, e.g. `--after=May.5th`. | |
3a11b38f JF |
2605 | * |
2606 | * Limiting by commit ranges | |
2607 | * ~~~~~~~~~~~~~~~~~~~~~~~~~ | |
468876c9 JF |
2608 | * Alternatively, commits can be limited to a specific range, such as |
2609 | * "all commits between 'tag-1.0' and 'tag-2.0'". For example: | |
2610 | * | |
2611 | * $ tig log tag-1.0..tag-2.0 | |
2612 | * | |
2613 | * This way of commit limiting makes it trivial to only browse the commits | |
2614 | * which haven't been pushed to a remote branch. Assuming 'origin' is your | |
2615 | * upstream remote branch, using: | |
2616 | * | |
2617 | * $ tig log origin..HEAD | |
2618 | * | |
2619 | * will list what will be pushed to the remote branch. Optionally, the ending | |
2620 | * 'HEAD' can be left out since it is implied. | |
2621 | * | |
2622 | * Limiting by reachability | |
2623 | * ~~~~~~~~~~~~~~~~~~~~~~~~ | |
2624 | * Git interprets the range specifier "tag-1.0..tag-2.0" as | |
2625 | * "all commits reachable from 'tag-2.0' but not from 'tag-1.0'". | |
3a11b38f JF |
2626 | * Where reachability refers to what commits are ancestors (or part of the |
2627 | * history) of the branch or tagged revision in question. | |
2628 | * | |
468876c9 JF |
2629 | * If you prefer to specify which commit to preview in this way use the |
2630 | * following: | |
2631 | * | |
2632 | * $ tig log tag-2.0 ^tag-1.0 | |
2633 | * | |
57bdf034 JF |
2634 | * You can think of '^' as a negation operator. Using this alternate syntax, |
2635 | * it is possible to further prune commits by specifying multiple branch | |
2636 | * cut offs. | |
468876c9 | 2637 | * |
3a11b38f JF |
2638 | * Combining revisions specification |
2639 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
2640 | * Revisions options can to some degree be combined, which makes it possible | |
2641 | * to say "show at most 20 commits from within the last month that changed | |
2642 | * files under the Documentation/ directory." | |
2643 | * | |
2644 | * $ tig -- --since=1.month -n20 -- Documentation/ | |
2645 | * | |
2646 | * Examining all repository references | |
2647 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
2648 | * In some cases, it can be useful to query changes across all references | |
2649 | * in a repository. An example is to ask "did any line of development in | |
2650 | * this repository change a particular file within the last week". This | |
2651 | * can be accomplished using: | |
2652 | * | |
2653 | * $ tig -- --all --since=1.week -- Makefile | |
2654 | * | |
6706b2ba JF |
2655 | * BUGS |
2656 | * ---- | |
2657 | * Known bugs and problems: | |
2658 | * | |
10e290ee JF |
2659 | * - In it's current state tig is pretty much UTF-8 only. |
2660 | * | |
6706b2ba | 2661 | * - If the screen width is very small the main view can draw |
468876c9 JF |
2662 | * outside the current view causing bad wrapping. Same goes |
2663 | * for title and status windows. | |
6706b2ba | 2664 | * |
c19f8017 JF |
2665 | * - The cursor can wrap-around on the last line and cause the |
2666 | * window to scroll. | |
2667 | * | |
4c6fabc2 JF |
2668 | * TODO |
2669 | * ---- | |
2670 | * Features that should be explored. | |
2671 | * | |
fac7db6c | 2672 | * - Searching. |
4c6fabc2 JF |
2673 | * |
2674 | * - Locale support. | |
2675 | * | |
b801d8b2 JF |
2676 | * COPYRIGHT |
2677 | * --------- | |
192d9a60 | 2678 | * Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk> |
b801d8b2 JF |
2679 | * |
2680 | * This program is free software; you can redistribute it and/or modify | |
2681 | * it under the terms of the GNU General Public License as published by | |
2682 | * the Free Software Foundation; either version 2 of the License, or | |
2683 | * (at your option) any later version. | |
2684 | * | |
2685 | * SEE ALSO | |
2686 | * -------- | |
f84f9d28 JF |
2687 | * - link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)], |
2688 | * - link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)] | |
2689 | * | |
2690 | * Other git repository browsers: | |
2691 | * | |
2692 | * - gitk(1) | |
2693 | * - qgit(1) | |
2694 | * - gitview(1) | |
b801d8b2 | 2695 | **/ |