Commit | Line | Data |
---|---|---|
4a2909a7 | 1 | /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk> |
192d9a60 | 2 | * |
5cfbde75 JF |
3 | * This program is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU General Public License as | |
5 | * published by the Free Software Foundation; either version 2 of | |
6 | * the License, or (at your option) any later version. | |
192d9a60 JF |
7 | * |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | */ | |
b801d8b2 JF |
13 | /** |
14 | * TIG(1) | |
15 | * ====== | |
16 | * | |
17 | * NAME | |
18 | * ---- | |
19 | * tig - text-mode interface for git | |
20 | * | |
21 | * SYNOPSIS | |
22 | * -------- | |
23 | * [verse] | |
03a93dbb JF |
24 | * tig [options] |
25 | * tig [options] [--] [git log options] | |
b76c2afc JF |
26 | * tig [options] log [git log options] |
27 | * tig [options] diff [git diff options] | |
8855ada4 JF |
28 | * tig [options] show [git show options] |
29 | * tig [options] < [git command output] | |
b801d8b2 JF |
30 | * |
31 | * DESCRIPTION | |
32 | * ----------- | |
6706b2ba JF |
33 | * Browse changes in a git repository. Additionally, tig(1) can also act |
34 | * as a pager for output of various git commands. | |
35 | * | |
57bdf034 | 36 | * When browsing repositories, tig(1) uses the underlying git commands |
468876c9 JF |
37 | * to present the user with various views, such as summarized commit log |
38 | * and showing the commit with the log message, diffstat, and the diff. | |
6706b2ba | 39 | * |
468876c9 JF |
40 | * Using tig(1) as a pager, it will display input from stdin and try |
41 | * to colorize it. | |
b801d8b2 JF |
42 | **/ |
43 | ||
b76c2afc | 44 | #ifndef VERSION |
8c11094f | 45 | #define VERSION "tig-0.3" |
b76c2afc JF |
46 | #endif |
47 | ||
8855ada4 JF |
48 | #ifndef DEBUG |
49 | #define NDEBUG | |
50 | #endif | |
51 | ||
22f66b0a | 52 | #include <assert.h> |
4c6fabc2 | 53 | #include <errno.h> |
22f66b0a JF |
54 | #include <ctype.h> |
55 | #include <signal.h> | |
b801d8b2 | 56 | #include <stdarg.h> |
b801d8b2 | 57 | #include <stdio.h> |
22f66b0a | 58 | #include <stdlib.h> |
b801d8b2 | 59 | #include <string.h> |
6908bdbd | 60 | #include <unistd.h> |
b76c2afc | 61 | #include <time.h> |
b801d8b2 JF |
62 | |
63 | #include <curses.h> | |
b801d8b2 JF |
64 | |
65 | static void die(const char *err, ...); | |
66 | static void report(const char *msg, ...); | |
4a63c884 | 67 | static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int)); |
1ba2ae4b | 68 | static void set_nonblocking_input(bool loading); |
10e290ee | 69 | static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed); |
6b161b31 JF |
70 | |
71 | #define ABS(x) ((x) >= 0 ? (x) : -(x)) | |
72 | #define MIN(x, y) ((x) < (y) ? (x) : (y)) | |
73 | ||
74 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) | |
75 | #define STRING_SIZE(x) (sizeof(x) - 1) | |
b76c2afc | 76 | |
2e8488b4 JF |
77 | #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */ |
78 | #define SIZEOF_CMD 1024 /* Size of command buffer. */ | |
b801d8b2 | 79 | |
82e78006 JF |
80 | /* This color name can be used to refer to the default term colors. */ |
81 | #define COLOR_DEFAULT (-1) | |
78c70acd | 82 | |
67e48ac5 | 83 | #define TIG_HELP "(d)iff, (l)og, (m)ain, (q)uit, (h)elp" |
468876c9 | 84 | |
82e78006 | 85 | /* The format and size of the date column in the main view. */ |
4c6fabc2 | 86 | #define DATE_FORMAT "%Y-%m-%d %H:%M" |
6b161b31 | 87 | #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ") |
4c6fabc2 | 88 | |
10e290ee JF |
89 | #define AUTHOR_COLS 20 |
90 | ||
a28bcc22 | 91 | /* The default interval between line numbers. */ |
4a2909a7 | 92 | #define NUMBER_INTERVAL 1 |
82e78006 | 93 | |
6706b2ba JF |
94 | #define TABSIZE 8 |
95 | ||
a28bcc22 JF |
96 | #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3) |
97 | ||
8855ada4 | 98 | /* Some ascii-shorthands fitted into the ncurses namespace. */ |
a28bcc22 JF |
99 | #define KEY_TAB '\t' |
100 | #define KEY_RETURN '\r' | |
4a2909a7 JF |
101 | #define KEY_ESC 27 |
102 | ||
6706b2ba | 103 | |
a28bcc22 | 104 | /* User action requests. */ |
4a2909a7 | 105 | enum request { |
a28bcc22 JF |
106 | /* Offset all requests to avoid conflicts with ncurses getch values. */ |
107 | REQ_OFFSET = KEY_MAX + 1, | |
108 | ||
4a2909a7 | 109 | /* XXX: Keep the view request first and in sync with views[]. */ |
2e8488b4 | 110 | REQ_VIEW_MAIN, |
4a2909a7 JF |
111 | REQ_VIEW_DIFF, |
112 | REQ_VIEW_LOG, | |
2e8488b4 | 113 | REQ_VIEW_HELP, |
6908bdbd | 114 | REQ_VIEW_PAGER, |
4a2909a7 | 115 | |
6b161b31 | 116 | REQ_ENTER, |
03a93dbb JF |
117 | REQ_QUIT, |
118 | REQ_PROMPT, | |
4a2909a7 | 119 | REQ_SCREEN_REDRAW, |
fac7db6c | 120 | REQ_SCREEN_RESIZE, |
4a2909a7 | 121 | REQ_SCREEN_UPDATE, |
03a93dbb JF |
122 | REQ_SHOW_VERSION, |
123 | REQ_STOP_LOADING, | |
4a2909a7 | 124 | REQ_TOGGLE_LINE_NUMBERS, |
03a93dbb | 125 | REQ_VIEW_NEXT, |
4f9b667a | 126 | REQ_VIEW_CLOSE, |
b3a54cba JF |
127 | REQ_NEXT, |
128 | REQ_PREVIOUS, | |
4a2909a7 JF |
129 | |
130 | REQ_MOVE_UP, | |
131 | REQ_MOVE_DOWN, | |
132 | REQ_MOVE_PAGE_UP, | |
133 | REQ_MOVE_PAGE_DOWN, | |
134 | REQ_MOVE_FIRST_LINE, | |
135 | REQ_MOVE_LAST_LINE, | |
136 | ||
137 | REQ_SCROLL_LINE_UP, | |
138 | REQ_SCROLL_LINE_DOWN, | |
139 | REQ_SCROLL_PAGE_UP, | |
140 | REQ_SCROLL_PAGE_DOWN, | |
141 | }; | |
142 | ||
c34d9c9f | 143 | struct ref { |
468876c9 JF |
144 | char *name; /* Ref name; tag or head names are shortened. */ |
145 | char id[41]; /* Commit SHA1 ID */ | |
146 | unsigned int tag:1; /* Is it a tag? */ | |
147 | unsigned int next:1; /* For ref lists: are there more refs? */ | |
c34d9c9f JF |
148 | }; |
149 | ||
ff26aa29 | 150 | static struct ref **get_refs(char *id); |
4c6fabc2 | 151 | |
6706b2ba | 152 | |
03a93dbb JF |
153 | /* |
154 | * String helpers | |
155 | */ | |
78c70acd | 156 | |
82e78006 | 157 | static inline void |
4685845e | 158 | string_ncopy(char *dst, const char *src, int dstlen) |
82e78006 JF |
159 | { |
160 | strncpy(dst, src, dstlen - 1); | |
161 | dst[dstlen - 1] = 0; | |
03a93dbb | 162 | |
82e78006 JF |
163 | } |
164 | ||
165 | /* Shorthand for safely copying into a fixed buffer. */ | |
166 | #define string_copy(dst, src) \ | |
167 | string_ncopy(dst, src, sizeof(dst)) | |
168 | ||
4a63c884 JF |
169 | static char * |
170 | chomp_string(char *name) | |
171 | { | |
172 | int namelen; | |
173 | ||
174 | while (isspace(*name)) | |
175 | name++; | |
176 | ||
177 | namelen = strlen(name) - 1; | |
178 | while (namelen > 0 && isspace(name[namelen])) | |
179 | name[namelen--] = 0; | |
180 | ||
181 | return name; | |
182 | } | |
183 | ||
6706b2ba | 184 | |
03a93dbb JF |
185 | /* Shell quoting |
186 | * | |
187 | * NOTE: The following is a slightly modified copy of the git project's shell | |
188 | * quoting routines found in the quote.c file. | |
189 | * | |
190 | * Help to copy the thing properly quoted for the shell safety. any single | |
191 | * quote is replaced with '\'', any exclamation point is replaced with '\!', | |
192 | * and the whole thing is enclosed in a | |
193 | * | |
194 | * E.g. | |
195 | * original sq_quote result | |
196 | * name ==> name ==> 'name' | |
197 | * a b ==> a b ==> 'a b' | |
198 | * a'b ==> a'\''b ==> 'a'\''b' | |
199 | * a!b ==> a'\!'b ==> 'a'\!'b' | |
200 | */ | |
201 | ||
202 | static size_t | |
203 | sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src) | |
204 | { | |
205 | char c; | |
206 | ||
a9274b95 | 207 | #define BUFPUT(x) do { if (bufsize < SIZEOF_CMD) buf[bufsize++] = (x); } while (0) |
03a93dbb JF |
208 | |
209 | BUFPUT('\''); | |
210 | while ((c = *src++)) { | |
211 | if (c == '\'' || c == '!') { | |
212 | BUFPUT('\''); | |
213 | BUFPUT('\\'); | |
214 | BUFPUT(c); | |
215 | BUFPUT('\''); | |
216 | } else { | |
217 | BUFPUT(c); | |
218 | } | |
219 | } | |
220 | BUFPUT('\''); | |
221 | ||
222 | return bufsize; | |
223 | } | |
224 | ||
82e78006 | 225 | |
b76c2afc JF |
226 | /** |
227 | * OPTIONS | |
228 | * ------- | |
229 | **/ | |
230 | ||
4b8c01a3 JF |
231 | static const char usage[] = |
232 | VERSION " (" __DATE__ ")\n" | |
233 | "\n" | |
234 | "Usage: tig [options]\n" | |
235 | " or: tig [options] [--] [git log options]\n" | |
236 | " or: tig [options] log [git log options]\n" | |
237 | " or: tig [options] diff [git diff options]\n" | |
238 | " or: tig [options] show [git show options]\n" | |
239 | " or: tig [options] < [git command output]\n" | |
240 | "\n" | |
241 | "Options:\n" | |
242 | " -l Start up in log view\n" | |
243 | " -d Start up in diff view\n" | |
244 | " -n[I], --line-number[=I] Show line numbers with given interval\n" | |
b3c965c9 | 245 | " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n" |
4b8c01a3 JF |
246 | " -- Mark end of tig options\n" |
247 | " -v, --version Show version and exit\n" | |
248 | " -h, --help Show help message and exit\n"; | |
249 | ||
6706b2ba JF |
250 | /* Option and state variables. */ |
251 | static bool opt_line_number = FALSE; | |
2e8488b4 | 252 | static int opt_num_interval = NUMBER_INTERVAL; |
6706b2ba | 253 | static int opt_tab_size = TABSIZE; |
6b161b31 | 254 | static enum request opt_request = REQ_VIEW_MAIN; |
03a93dbb | 255 | static char opt_cmd[SIZEOF_CMD] = ""; |
9989bf60 JF |
256 | static char opt_encoding[20] = ""; |
257 | static bool opt_utf8 = TRUE; | |
6908bdbd | 258 | static FILE *opt_pipe = NULL; |
b76c2afc | 259 | |
b76c2afc | 260 | /* Returns the index of log or diff command or -1 to exit. */ |
8855ada4 | 261 | static bool |
b76c2afc JF |
262 | parse_options(int argc, char *argv[]) |
263 | { | |
264 | int i; | |
265 | ||
266 | for (i = 1; i < argc; i++) { | |
267 | char *opt = argv[i]; | |
268 | ||
269 | /** | |
b76c2afc | 270 | * -l:: |
1ba2ae4b | 271 | * Start up in log view using the internal log command. |
b76c2afc | 272 | **/ |
6b161b31 | 273 | if (!strcmp(opt, "-l")) { |
4a2909a7 | 274 | opt_request = REQ_VIEW_LOG; |
6b161b31 JF |
275 | continue; |
276 | } | |
b76c2afc JF |
277 | |
278 | /** | |
279 | * -d:: | |
1ba2ae4b | 280 | * Start up in diff view using the internal diff command. |
b76c2afc | 281 | **/ |
6b161b31 | 282 | if (!strcmp(opt, "-d")) { |
4a2909a7 | 283 | opt_request = REQ_VIEW_DIFF; |
6b161b31 JF |
284 | continue; |
285 | } | |
b76c2afc JF |
286 | |
287 | /** | |
2e8488b4 | 288 | * -n[INTERVAL], --line-number[=INTERVAL]:: |
b76c2afc | 289 | * Prefix line numbers in log and diff view. |
2e8488b4 | 290 | * Optionally, with interval different than each line. |
b76c2afc | 291 | **/ |
6b161b31 | 292 | if (!strncmp(opt, "-n", 2) || |
8855ada4 | 293 | !strncmp(opt, "--line-number", 13)) { |
2e8488b4 JF |
294 | char *num = opt; |
295 | ||
296 | if (opt[1] == 'n') { | |
297 | num = opt + 2; | |
298 | ||
299 | } else if (opt[STRING_SIZE("--line-number")] == '=') { | |
300 | num = opt + STRING_SIZE("--line-number="); | |
301 | } | |
302 | ||
303 | if (isdigit(*num)) | |
304 | opt_num_interval = atoi(num); | |
305 | ||
6b161b31 JF |
306 | opt_line_number = TRUE; |
307 | continue; | |
308 | } | |
b76c2afc JF |
309 | |
310 | /** | |
380ec161 | 311 | * -b[NSPACES], --tab-size[=NSPACES]:: |
6706b2ba JF |
312 | * Set the number of spaces tabs should be expanded to. |
313 | **/ | |
380ec161 | 314 | if (!strncmp(opt, "-b", 2) || |
6706b2ba JF |
315 | !strncmp(opt, "--tab-size", 10)) { |
316 | char *num = opt; | |
317 | ||
380ec161 | 318 | if (opt[1] == 'b') { |
6706b2ba JF |
319 | num = opt + 2; |
320 | ||
321 | } else if (opt[STRING_SIZE("--tab-size")] == '=') { | |
322 | num = opt + STRING_SIZE("--tab-size="); | |
323 | } | |
324 | ||
325 | if (isdigit(*num)) | |
326 | opt_tab_size = MIN(atoi(num), TABSIZE); | |
327 | continue; | |
328 | } | |
329 | ||
330 | /** | |
b76c2afc JF |
331 | * -v, --version:: |
332 | * Show version and exit. | |
333 | **/ | |
6b161b31 | 334 | if (!strcmp(opt, "-v") || |
8855ada4 | 335 | !strcmp(opt, "--version")) { |
b76c2afc | 336 | printf("tig version %s\n", VERSION); |
8855ada4 | 337 | return FALSE; |
6b161b31 | 338 | } |
b76c2afc JF |
339 | |
340 | /** | |
4b8c01a3 JF |
341 | * -h, --help:: |
342 | * Show help message and exit. | |
343 | **/ | |
344 | if (!strcmp(opt, "-h") || | |
345 | !strcmp(opt, "--help")) { | |
346 | printf(usage); | |
347 | return FALSE; | |
348 | } | |
349 | ||
350 | /** | |
03a93dbb | 351 | * \--:: |
0721c53a | 352 | * End of tig(1) options. Useful when specifying command |
d44f34bf | 353 | * options for the main view. Example: |
03a93dbb | 354 | * |
889cb462 | 355 | * $ tig -- --since=1.month |
b76c2afc | 356 | **/ |
6908bdbd JF |
357 | if (!strcmp(opt, "--")) { |
358 | i++; | |
359 | break; | |
360 | } | |
03a93dbb | 361 | |
8855ada4 | 362 | /** |
d44f34bf | 363 | * log [git log options]:: |
8855ada4 JF |
364 | * Open log view using the given git log options. |
365 | * | |
d44f34bf | 366 | * diff [git diff options]:: |
8855ada4 JF |
367 | * Open diff view using the given git diff options. |
368 | * | |
d44f34bf | 369 | * show [git show options]:: |
8855ada4 JF |
370 | * Open diff view using the given git show options. |
371 | **/ | |
372 | if (!strcmp(opt, "log") || | |
373 | !strcmp(opt, "diff") || | |
374 | !strcmp(opt, "show")) { | |
375 | opt_request = opt[0] == 'l' | |
376 | ? REQ_VIEW_LOG : REQ_VIEW_DIFF; | |
377 | break; | |
378 | } | |
379 | ||
d44f34bf | 380 | /** |
57bdf034 | 381 | * [git log options]:: |
d44f34bf JF |
382 | * tig(1) will stop the option parsing when the first |
383 | * command line parameter not starting with "-" is | |
57bdf034 JF |
384 | * encountered. All options including this one will be |
385 | * passed to git log when loading the main view. | |
386 | * This makes it possible to say: | |
889cb462 | 387 | * |
03a93dbb | 388 | * $ tig tag-1.0..HEAD |
d44f34bf | 389 | **/ |
03a93dbb | 390 | if (opt[0] && opt[0] != '-') |
6908bdbd | 391 | break; |
6b161b31 JF |
392 | |
393 | die("unknown command '%s'", opt); | |
b76c2afc JF |
394 | } |
395 | ||
6908bdbd | 396 | if (!isatty(STDIN_FILENO)) { |
8855ada4 JF |
397 | /** |
398 | * Pager mode | |
399 | * ~~~~~~~~~~ | |
400 | * If stdin is a pipe, any log or diff options will be ignored and the | |
401 | * pager view will be opened loading data from stdin. The pager mode | |
402 | * can be used for colorizing output from various git commands. | |
403 | * | |
404 | * Example on how to colorize the output of git-show(1): | |
405 | * | |
406 | * $ git show | tig | |
407 | **/ | |
6908bdbd JF |
408 | opt_request = REQ_VIEW_PAGER; |
409 | opt_pipe = stdin; | |
410 | ||
411 | } else if (i < argc) { | |
412 | size_t buf_size; | |
413 | ||
8855ada4 JF |
414 | /** |
415 | * Git command options | |
416 | * ~~~~~~~~~~~~~~~~~~~ | |
8855ada4 JF |
417 | * All git command options specified on the command line will |
418 | * be passed to the given command and all will be shell quoted | |
468876c9 | 419 | * before they are passed to the shell. |
8855ada4 | 420 | * |
468876c9 JF |
421 | * NOTE: If you specify options for the main view, you should |
422 | * not use the `--pretty` option as this option will be set | |
423 | * automatically to the format expected by the main view. | |
8855ada4 JF |
424 | * |
425 | * Example on how to open the log view and show both author and | |
426 | * committer information: | |
427 | * | |
428 | * $ tig log --pretty=fuller | |
468876c9 | 429 | * |
0721c53a JF |
430 | * See the <<refspec, "Specifying revisions">> section below |
431 | * for an introduction to revision options supported by the git | |
432 | * commands. For details on specific git command options, refer | |
433 | * to the man page of the command in question. | |
8855ada4 JF |
434 | **/ |
435 | ||
6908bdbd | 436 | if (opt_request == REQ_VIEW_MAIN) |
8855ada4 JF |
437 | /* XXX: This is vulnerable to the user overriding |
438 | * options required for the main view parser. */ | |
6908bdbd JF |
439 | string_copy(opt_cmd, "git log --stat --pretty=raw"); |
440 | else | |
441 | string_copy(opt_cmd, "git"); | |
442 | buf_size = strlen(opt_cmd); | |
443 | ||
444 | while (buf_size < sizeof(opt_cmd) && i < argc) { | |
445 | opt_cmd[buf_size++] = ' '; | |
446 | buf_size = sq_quote(opt_cmd, buf_size, argv[i++]); | |
447 | } | |
448 | ||
449 | if (buf_size >= sizeof(opt_cmd)) | |
450 | die("command too long"); | |
451 | ||
452 | opt_cmd[buf_size] = 0; | |
453 | ||
454 | } | |
455 | ||
afdc35b3 JF |
456 | if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8")) |
457 | opt_utf8 = FALSE; | |
458 | ||
8855ada4 | 459 | return TRUE; |
b76c2afc JF |
460 | } |
461 | ||
462 | ||
219ee52a JF |
463 | /** |
464 | * ENVIRONMENT VARIABLES | |
465 | * --------------------- | |
466 | * Several options related to the interface with git can be configured | |
467 | * via environment options. | |
468 | * | |
469 | * Repository references | |
470 | * ~~~~~~~~~~~~~~~~~~~~~ | |
471 | * Commits that are referenced by tags and branch heads will be marked | |
472 | * by the reference name surrounded by '[' and ']': | |
473 | * | |
474 | * 2006-03-26 19:42 Petr Baudis | [cogito-0.17.1] Cogito 0.17.1 | |
475 | * | |
476 | * If you want to filter out certain directories under `.git/refs/`, say | |
477 | * `tmp` you can do it by setting the following variable: | |
478 | * | |
479 | * $ TIG_LS_REMOTE="git ls-remote . | sed /\/tmp\//d" tig | |
480 | * | |
481 | * Or set the variable permanently in your environment. | |
482 | * | |
483 | * TIG_LS_REMOTE:: | |
484 | * Set command for retrieving all repository references. The command | |
485 | * should output data in the same format as git-ls-remote(1). | |
486 | **/ | |
487 | ||
488 | #define TIG_LS_REMOTE \ | |
489 | "git ls-remote . 2>/dev/null" | |
490 | ||
491 | /** | |
55565c51 JF |
492 | * [[history-commands]] |
493 | * History commands | |
494 | * ~~~~~~~~~~~~~~~~ | |
219ee52a JF |
495 | * It is possible to alter which commands are used for the different views. |
496 | * If for example you prefer commits in the main view to be sorted by date | |
497 | * and only show 500 commits, use: | |
498 | * | |
499 | * $ TIG_MAIN_CMD="git log --date-order -n500 --pretty=raw %s" tig | |
500 | * | |
501 | * Or set the variable permanently in your environment. | |
502 | * | |
503 | * Notice, how `%s` is used to specify the commit reference. There can | |
504 | * be a maximum of 5 `%s` ref specifications. | |
505 | * | |
506 | * TIG_DIFF_CMD:: | |
507 | * The command used for the diff view. By default, git show is used | |
508 | * as a backend. | |
509 | * | |
510 | * TIG_LOG_CMD:: | |
511 | * The command used for the log view. If you prefer to have both | |
512 | * author and committer shown in the log view be sure to pass | |
513 | * `--pretty=fuller` to git log. | |
514 | * | |
515 | * TIG_MAIN_CMD:: | |
516 | * The command used for the main view. Note, you must always specify | |
517 | * the option: `--pretty=raw` since the main view parser expects to | |
518 | * read that format. | |
519 | **/ | |
520 | ||
521 | #define TIG_DIFF_CMD \ | |
522 | "git show --patch-with-stat --find-copies-harder -B -C %s" | |
523 | ||
524 | #define TIG_LOG_CMD \ | |
525 | "git log --cc --stat -n100 %s" | |
526 | ||
527 | #define TIG_MAIN_CMD \ | |
528 | "git log --topo-order --stat --pretty=raw %s" | |
529 | ||
530 | /* ... silently ignore that the following are also exported. */ | |
531 | ||
532 | #define TIG_HELP_CMD \ | |
533 | "man tig 2>/dev/null" | |
534 | ||
535 | #define TIG_PAGER_CMD \ | |
536 | "" | |
537 | ||
538 | ||
b76c2afc JF |
539 | /* |
540 | * Line-oriented content detection. | |
6b161b31 JF |
541 | */ |
542 | ||
2e8488b4 | 543 | #define LINE_INFO \ |
6b161b31 JF |
544 | /* Line type String to match Foreground Background Attributes |
545 | * --------- --------------- ---------- ---------- ---------- */ \ | |
a28bcc22 JF |
546 | /* Diff markup */ \ |
547 | LINE(DIFF, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
8855ada4 | 548 | LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
a28bcc22 JF |
549 | LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
550 | LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
551 | LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \ | |
3af8774e JF |
552 | LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
553 | LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
a28bcc22 JF |
554 | LINE(DIFF_COPY, "copy ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
555 | LINE(DIFF_RENAME, "rename ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
556 | LINE(DIFF_SIM, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
557 | LINE(DIFF_DISSIM, "dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
558 | /* Pretty print commit header */ \ | |
6908bdbd | 559 | LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
8855ada4 | 560 | LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
6908bdbd JF |
561 | LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
562 | LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
8855ada4 JF |
563 | LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
564 | LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
a28bcc22 JF |
565 | /* Raw commit header */ \ |
566 | LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
567 | LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
568 | LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
8855ada4 | 569 | LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
a28bcc22 JF |
570 | LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
571 | /* Misc */ \ | |
572 | LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
573 | LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
574 | /* UI colors */ \ | |
575 | LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \ | |
576 | LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \ | |
577 | LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
6b161b31 JF |
578 | LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \ |
579 | LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \ | |
a28bcc22 JF |
580 | LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
581 | LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
582 | LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \ | |
c34d9c9f JF |
583 | LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
584 | LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \ | |
585 | LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), | |
2e8488b4 | 586 | |
78c70acd | 587 | enum line_type { |
2e8488b4 JF |
588 | #define LINE(type, line, fg, bg, attr) \ |
589 | LINE_##type | |
590 | LINE_INFO | |
591 | #undef LINE | |
78c70acd JF |
592 | }; |
593 | ||
594 | struct line_info { | |
4685845e | 595 | const char *line; /* The start of line to match. */ |
2e8488b4 JF |
596 | int linelen; /* Size of string to match. */ |
597 | int fg, bg, attr; /* Color and text attributes for the lines. */ | |
78c70acd JF |
598 | }; |
599 | ||
2e8488b4 | 600 | static struct line_info line_info[] = { |
78c70acd | 601 | #define LINE(type, line, fg, bg, attr) \ |
a28bcc22 | 602 | { (line), STRING_SIZE(line), (fg), (bg), (attr) } |
2e8488b4 JF |
603 | LINE_INFO |
604 | #undef LINE | |
78c70acd JF |
605 | }; |
606 | ||
2e8488b4 JF |
607 | static enum line_type |
608 | get_line_type(char *line) | |
78c70acd JF |
609 | { |
610 | int linelen = strlen(line); | |
a28bcc22 | 611 | enum line_type type; |
78c70acd | 612 | |
a28bcc22 | 613 | for (type = 0; type < ARRAY_SIZE(line_info); type++) |
2e8488b4 | 614 | /* Case insensitive search matches Signed-off-by lines better. */ |
a28bcc22 JF |
615 | if (linelen >= line_info[type].linelen && |
616 | !strncasecmp(line_info[type].line, line, line_info[type].linelen)) | |
617 | return type; | |
78c70acd | 618 | |
2e8488b4 | 619 | return LINE_DEFAULT; |
78c70acd JF |
620 | } |
621 | ||
2e8488b4 | 622 | static inline int |
78c70acd JF |
623 | get_line_attr(enum line_type type) |
624 | { | |
2e8488b4 JF |
625 | assert(type < ARRAY_SIZE(line_info)); |
626 | return COLOR_PAIR(type) | line_info[type].attr; | |
78c70acd JF |
627 | } |
628 | ||
629 | static void | |
630 | init_colors(void) | |
631 | { | |
82e78006 JF |
632 | int default_bg = COLOR_BLACK; |
633 | int default_fg = COLOR_WHITE; | |
a28bcc22 | 634 | enum line_type type; |
78c70acd JF |
635 | |
636 | start_color(); | |
637 | ||
638 | if (use_default_colors() != ERR) { | |
82e78006 JF |
639 | default_bg = -1; |
640 | default_fg = -1; | |
78c70acd JF |
641 | } |
642 | ||
a28bcc22 JF |
643 | for (type = 0; type < ARRAY_SIZE(line_info); type++) { |
644 | struct line_info *info = &line_info[type]; | |
82e78006 JF |
645 | int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg; |
646 | int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg; | |
78c70acd | 647 | |
a28bcc22 | 648 | init_pair(type, fg, bg); |
78c70acd JF |
649 | } |
650 | } | |
651 | ||
fe7233c3 JF |
652 | struct line { |
653 | enum line_type type; | |
654 | void *data; /* User data */ | |
655 | }; | |
656 | ||
78c70acd | 657 | |
1ba2ae4b | 658 | /** |
468876c9 JF |
659 | * The viewer |
660 | * ---------- | |
c2124ccd JF |
661 | * The display consists of a status window on the last line of the screen and |
662 | * one or more views. The default is to only show one view at the time but it | |
663 | * is possible to split both the main and log view to also show the commit | |
664 | * diff. | |
468876c9 | 665 | * |
c2124ccd JF |
666 | * If you are in the log view and press 'Enter' when the current line is a |
667 | * commit line, such as: | |
468876c9 | 668 | * |
c2124ccd | 669 | * commit 4d55caff4cc89335192f3e566004b4ceef572521 |
468876c9 | 670 | * |
c2124ccd JF |
671 | * You will split the view so that the log view is displayed in the top window |
672 | * and the diff view in the bottom window. You can switch between the two | |
673 | * views by pressing 'Tab'. To maximize the log view again, simply press 'l'. | |
674 | **/ | |
675 | ||
676 | struct view; | |
fe7233c3 | 677 | struct view_ops; |
c2124ccd JF |
678 | |
679 | /* The display array of active views and the index of the current view. */ | |
680 | static struct view *display[2]; | |
681 | static unsigned int current_view; | |
682 | ||
683 | #define foreach_view(view, i) \ | |
684 | for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++) | |
685 | ||
9f41488f | 686 | #define displayed_views() (display[1] != NULL ? 2 : 1) |
c2124ccd JF |
687 | |
688 | /** | |
689 | * Current head and commit ID | |
690 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
691 | * The viewer keeps track of both what head and commit ID you are currently | |
692 | * viewing. The commit ID will follow the cursor line and change everytime time | |
693 | * you highlight a different commit. Whenever you reopen the diff view it | |
694 | * will be reloaded, if the commit ID changed. | |
468876c9 | 695 | * |
c2124ccd JF |
696 | * The head ID is used when opening the main and log view to indicate from |
697 | * what revision to show history. | |
468876c9 | 698 | **/ |
b801d8b2 | 699 | |
c2124ccd JF |
700 | static char ref_commit[SIZEOF_REF] = "HEAD"; |
701 | static char ref_head[SIZEOF_REF] = "HEAD"; | |
702 | ||
b801d8b2 | 703 | struct view { |
03a93dbb | 704 | const char *name; /* View name */ |
4685845e TH |
705 | const char *cmd_fmt; /* Default command line format */ |
706 | const char *cmd_env; /* Command line set via environment */ | |
707 | const char *id; /* Points to either of ref_{head,commit} */ | |
6b161b31 | 708 | |
fe7233c3 | 709 | struct view_ops *ops; /* View operations */ |
22f66b0a | 710 | |
03a93dbb | 711 | char cmd[SIZEOF_CMD]; /* Command buffer */ |
49f2b43f JF |
712 | char ref[SIZEOF_REF]; /* Hovered commit reference */ |
713 | char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */ | |
2e8488b4 | 714 | |
8855ada4 JF |
715 | int height, width; /* The width and height of the main window */ |
716 | WINDOW *win; /* The main window */ | |
717 | WINDOW *title; /* The title window living below the main window */ | |
b801d8b2 JF |
718 | |
719 | /* Navigation */ | |
720 | unsigned long offset; /* Offset of the window top */ | |
721 | unsigned long lineno; /* Current line number */ | |
722 | ||
f6da0b66 JF |
723 | /* If non-NULL, points to the view that opened this view. If this view |
724 | * is closed tig will switch back to the parent view. */ | |
725 | struct view *parent; | |
726 | ||
b801d8b2 JF |
727 | /* Buffering */ |
728 | unsigned long lines; /* Total number of lines */ | |
fe7233c3 | 729 | struct line *line; /* Line index */ |
8855ada4 | 730 | unsigned int digits; /* Number of digits in the lines member. */ |
b801d8b2 JF |
731 | |
732 | /* Loading */ | |
733 | FILE *pipe; | |
2e8488b4 | 734 | time_t start_time; |
b801d8b2 JF |
735 | }; |
736 | ||
fe7233c3 JF |
737 | struct view_ops { |
738 | /* What type of content being displayed. Used in the title bar. */ | |
739 | const char *type; | |
740 | /* Draw one line; @lineno must be < view->height. */ | |
741 | bool (*draw)(struct view *view, struct line *line, unsigned int lineno); | |
742 | /* Read one line; updates view->line. */ | |
743 | bool (*read)(struct view *view, struct line *prev, char *data); | |
744 | /* Depending on view, change display based on current line. */ | |
745 | bool (*enter)(struct view *view, struct line *line); | |
746 | }; | |
747 | ||
6b161b31 JF |
748 | static struct view_ops pager_ops; |
749 | static struct view_ops main_ops; | |
a28bcc22 | 750 | |
95d7ddcd JF |
751 | #define VIEW_STR(name, cmd, env, ref, ops) \ |
752 | { name, cmd, #env, ref, ops } | |
1ba2ae4b | 753 | |
95d7ddcd JF |
754 | #define VIEW_(id, name, ops, ref) \ |
755 | VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops) | |
1ba2ae4b | 756 | |
c2124ccd JF |
757 | /** |
758 | * Views | |
759 | * ~~~~~ | |
760 | * tig(1) presents various 'views' of a repository. Each view is based on output | |
761 | * from an external command, most often 'git log', 'git diff', or 'git show'. | |
762 | * | |
763 | * The main view:: | |
764 | * Is the default view, and it shows a one line summary of each commit | |
765 | * in the chosen list of revisions. The summary includes commit date, | |
766 | * author, and the first line of the log message. Additionally, any | |
767 | * repository references, such as tags, will be shown. | |
768 | * | |
769 | * The log view:: | |
770 | * Presents a more rich view of the revision log showing the whole log | |
771 | * message and the diffstat. | |
772 | * | |
773 | * The diff view:: | |
774 | * Shows either the diff of the current working tree, that is, what | |
775 | * has changed since the last commit, or the commit diff complete | |
776 | * with log message, diffstat and diff. | |
777 | * | |
778 | * The pager view:: | |
779 | * Is used for displaying both input from stdin and output from git | |
780 | * commands entered in the internal prompt. | |
781 | * | |
782 | * The help view:: | |
783 | * Displays the information from the tig(1) man page. For the help view | |
784 | * to work you need to have the tig(1) man page installed. | |
785 | **/ | |
786 | ||
b801d8b2 | 787 | static struct view views[] = { |
95d7ddcd JF |
788 | VIEW_(MAIN, "main", &main_ops, ref_head), |
789 | VIEW_(DIFF, "diff", &pager_ops, ref_commit), | |
790 | VIEW_(LOG, "log", &pager_ops, ref_head), | |
791 | VIEW_(HELP, "help", &pager_ops, "static"), | |
792 | VIEW_(PAGER, "pager", &pager_ops, "static"), | |
b801d8b2 JF |
793 | }; |
794 | ||
a28bcc22 JF |
795 | #define VIEW(req) (&views[(req) - REQ_OFFSET - 1]) |
796 | ||
4c6fabc2 | 797 | |
fe7233c3 JF |
798 | static bool |
799 | draw_view_line(struct view *view, unsigned int lineno) | |
800 | { | |
801 | if (view->offset + lineno >= view->lines) | |
802 | return FALSE; | |
803 | ||
804 | return view->ops->draw(view, &view->line[view->offset + lineno], lineno); | |
805 | } | |
806 | ||
b801d8b2 | 807 | static void |
82e78006 | 808 | redraw_view_from(struct view *view, int lineno) |
b801d8b2 | 809 | { |
82e78006 | 810 | assert(0 <= lineno && lineno < view->height); |
b801d8b2 | 811 | |
82e78006 | 812 | for (; lineno < view->height; lineno++) { |
fe7233c3 | 813 | if (!draw_view_line(view, lineno)) |
fd85fef1 | 814 | break; |
b801d8b2 JF |
815 | } |
816 | ||
817 | redrawwin(view->win); | |
818 | wrefresh(view->win); | |
819 | } | |
820 | ||
b76c2afc | 821 | static void |
82e78006 JF |
822 | redraw_view(struct view *view) |
823 | { | |
824 | wclear(view->win); | |
825 | redraw_view_from(view, 0); | |
826 | } | |
827 | ||
c2124ccd JF |
828 | |
829 | /** | |
830 | * Title windows | |
831 | * ~~~~~~~~~~~~~ | |
832 | * Each view has a title window which shows the name of the view, current | |
833 | * commit ID if available, and where the view is positioned: | |
834 | * | |
835 | * [main] c622eefaa485995320bc743431bae0d497b1d875 - commit 1 of 61 (1%) | |
836 | * | |
837 | * By default, the title of the current view is highlighted using bold font. | |
9a666315 JF |
838 | * For long loading views (taking over 3 seconds) the time since loading |
839 | * started will be appended: | |
840 | * | |
841 | * [main] 77d9e40fbcea3238015aea403e06f61542df9a31 - commit 1 of 779 (0%) 5s | |
c2124ccd JF |
842 | **/ |
843 | ||
6b161b31 | 844 | static void |
81030ec8 JF |
845 | update_view_title(struct view *view) |
846 | { | |
847 | if (view == display[current_view]) | |
848 | wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS)); | |
849 | else | |
850 | wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR)); | |
851 | ||
852 | werase(view->title); | |
853 | wmove(view->title, 0, 0); | |
854 | ||
81030ec8 JF |
855 | if (*view->ref) |
856 | wprintw(view->title, "[%s] %s", view->name, view->ref); | |
857 | else | |
858 | wprintw(view->title, "[%s]", view->name); | |
859 | ||
c19f8017 JF |
860 | if (view->lines || view->pipe) { |
861 | unsigned int lines = view->lines | |
862 | ? (view->lineno + 1) * 100 / view->lines | |
863 | : 0; | |
864 | ||
81030ec8 JF |
865 | wprintw(view->title, " - %s %d of %d (%d%%)", |
866 | view->ops->type, | |
867 | view->lineno + 1, | |
868 | view->lines, | |
c19f8017 | 869 | lines); |
81030ec8 JF |
870 | } |
871 | ||
f97f4012 JF |
872 | if (view->pipe) { |
873 | time_t secs = time(NULL) - view->start_time; | |
874 | ||
875 | /* Three git seconds are a long time ... */ | |
876 | if (secs > 2) | |
877 | wprintw(view->title, " %lds", secs); | |
878 | } | |
879 | ||
976447f8 | 880 | wmove(view->title, 0, view->width - 1); |
81030ec8 JF |
881 | wrefresh(view->title); |
882 | } | |
883 | ||
884 | static void | |
6b161b31 | 885 | resize_display(void) |
b76c2afc | 886 | { |
03a93dbb | 887 | int offset, i; |
6b161b31 JF |
888 | struct view *base = display[0]; |
889 | struct view *view = display[1] ? display[1] : display[0]; | |
b76c2afc | 890 | |
6b161b31 | 891 | /* Setup window dimensions */ |
b76c2afc | 892 | |
03a93dbb | 893 | getmaxyx(stdscr, base->height, base->width); |
b76c2afc | 894 | |
6b161b31 | 895 | /* Make room for the status window. */ |
03a93dbb | 896 | base->height -= 1; |
6b161b31 JF |
897 | |
898 | if (view != base) { | |
03a93dbb JF |
899 | /* Horizontal split. */ |
900 | view->width = base->width; | |
6b161b31 JF |
901 | view->height = SCALE_SPLIT_VIEW(base->height); |
902 | base->height -= view->height; | |
903 | ||
904 | /* Make room for the title bar. */ | |
905 | view->height -= 1; | |
906 | } | |
907 | ||
908 | /* Make room for the title bar. */ | |
909 | base->height -= 1; | |
910 | ||
911 | offset = 0; | |
912 | ||
913 | foreach_view (view, i) { | |
b76c2afc | 914 | if (!view->win) { |
c19f8017 | 915 | view->win = newwin(view->height, 0, offset, 0); |
6b161b31 JF |
916 | if (!view->win) |
917 | die("Failed to create %s view", view->name); | |
918 | ||
919 | scrollok(view->win, TRUE); | |
920 | ||
921 | view->title = newwin(1, 0, offset + view->height, 0); | |
922 | if (!view->title) | |
923 | die("Failed to create title window"); | |
924 | ||
925 | } else { | |
c19f8017 | 926 | wresize(view->win, view->height, view->width); |
6b161b31 JF |
927 | mvwin(view->win, offset, 0); |
928 | mvwin(view->title, offset + view->height, 0); | |
a28bcc22 | 929 | } |
a28bcc22 | 930 | |
6b161b31 | 931 | offset += view->height + 1; |
b76c2afc | 932 | } |
6b161b31 | 933 | } |
b76c2afc | 934 | |
6b161b31 | 935 | static void |
20bb5e18 JF |
936 | redraw_display(void) |
937 | { | |
938 | struct view *view; | |
939 | int i; | |
940 | ||
941 | foreach_view (view, i) { | |
942 | redraw_view(view); | |
943 | update_view_title(view); | |
944 | } | |
945 | } | |
946 | ||
85af6284 JF |
947 | static void |
948 | update_display_cursor(void) | |
949 | { | |
950 | struct view *view = display[current_view]; | |
951 | ||
952 | /* Move the cursor to the right-most column of the cursor line. | |
953 | * | |
954 | * XXX: This could turn out to be a bit expensive, but it ensures that | |
955 | * the cursor does not jump around. */ | |
956 | if (view->lines) { | |
957 | wmove(view->win, view->lineno - view->offset, view->width - 1); | |
958 | wrefresh(view->win); | |
959 | } | |
960 | } | |
20bb5e18 | 961 | |
2e8488b4 JF |
962 | /* |
963 | * Navigation | |
964 | */ | |
965 | ||
4a2909a7 | 966 | /* Scrolling backend */ |
b801d8b2 | 967 | static void |
b3a54cba | 968 | do_scroll_view(struct view *view, int lines, bool redraw) |
b801d8b2 | 969 | { |
fd85fef1 JF |
970 | /* The rendering expects the new offset. */ |
971 | view->offset += lines; | |
972 | ||
973 | assert(0 <= view->offset && view->offset < view->lines); | |
974 | assert(lines); | |
b801d8b2 | 975 | |
82e78006 | 976 | /* Redraw the whole screen if scrolling is pointless. */ |
4c6fabc2 | 977 | if (view->height < ABS(lines)) { |
b76c2afc JF |
978 | redraw_view(view); |
979 | ||
980 | } else { | |
22f66b0a | 981 | int line = lines > 0 ? view->height - lines : 0; |
82e78006 | 982 | int end = line + ABS(lines); |
fd85fef1 JF |
983 | |
984 | wscrl(view->win, lines); | |
985 | ||
22f66b0a | 986 | for (; line < end; line++) { |
fe7233c3 | 987 | if (!draw_view_line(view, line)) |
fd85fef1 JF |
988 | break; |
989 | } | |
990 | } | |
991 | ||
992 | /* Move current line into the view. */ | |
993 | if (view->lineno < view->offset) { | |
994 | view->lineno = view->offset; | |
fe7233c3 | 995 | draw_view_line(view, 0); |
fd85fef1 JF |
996 | |
997 | } else if (view->lineno >= view->offset + view->height) { | |
6706b2ba JF |
998 | if (view->lineno == view->offset + view->height) { |
999 | /* Clear the hidden line so it doesn't show if the view | |
1000 | * is scrolled up. */ | |
1001 | wmove(view->win, view->height, 0); | |
1002 | wclrtoeol(view->win); | |
1003 | } | |
fd85fef1 | 1004 | view->lineno = view->offset + view->height - 1; |
fe7233c3 | 1005 | draw_view_line(view, view->lineno - view->offset); |
fd85fef1 JF |
1006 | } |
1007 | ||
4c6fabc2 | 1008 | assert(view->offset <= view->lineno && view->lineno < view->lines); |
fd85fef1 | 1009 | |
b3a54cba JF |
1010 | if (!redraw) |
1011 | return; | |
1012 | ||
fd85fef1 JF |
1013 | redrawwin(view->win); |
1014 | wrefresh(view->win); | |
9d3f5834 | 1015 | report(""); |
fd85fef1 | 1016 | } |
78c70acd | 1017 | |
4a2909a7 | 1018 | /* Scroll frontend */ |
fd85fef1 | 1019 | static void |
6b161b31 | 1020 | scroll_view(struct view *view, enum request request) |
fd85fef1 JF |
1021 | { |
1022 | int lines = 1; | |
b801d8b2 JF |
1023 | |
1024 | switch (request) { | |
4a2909a7 | 1025 | case REQ_SCROLL_PAGE_DOWN: |
fd85fef1 | 1026 | lines = view->height; |
4a2909a7 | 1027 | case REQ_SCROLL_LINE_DOWN: |
b801d8b2 | 1028 | if (view->offset + lines > view->lines) |
bde3653a | 1029 | lines = view->lines - view->offset; |
b801d8b2 | 1030 | |
fd85fef1 | 1031 | if (lines == 0 || view->offset + view->height >= view->lines) { |
eb98559e | 1032 | report("Cannot scroll beyond the last line"); |
b801d8b2 JF |
1033 | return; |
1034 | } | |
1035 | break; | |
1036 | ||
4a2909a7 | 1037 | case REQ_SCROLL_PAGE_UP: |
fd85fef1 | 1038 | lines = view->height; |
4a2909a7 | 1039 | case REQ_SCROLL_LINE_UP: |
b801d8b2 JF |
1040 | if (lines > view->offset) |
1041 | lines = view->offset; | |
1042 | ||
1043 | if (lines == 0) { | |
eb98559e | 1044 | report("Cannot scroll beyond the first line"); |
b801d8b2 JF |
1045 | return; |
1046 | } | |
1047 | ||
fd85fef1 | 1048 | lines = -lines; |
b801d8b2 | 1049 | break; |
03a93dbb | 1050 | |
6b161b31 JF |
1051 | default: |
1052 | die("request %d not handled in switch", request); | |
b801d8b2 JF |
1053 | } |
1054 | ||
b3a54cba | 1055 | do_scroll_view(view, lines, TRUE); |
fd85fef1 | 1056 | } |
b801d8b2 | 1057 | |
4a2909a7 | 1058 | /* Cursor moving */ |
fd85fef1 | 1059 | static void |
b3a54cba | 1060 | move_view(struct view *view, enum request request, bool redraw) |
fd85fef1 JF |
1061 | { |
1062 | int steps; | |
b801d8b2 | 1063 | |
fd85fef1 | 1064 | switch (request) { |
4a2909a7 | 1065 | case REQ_MOVE_FIRST_LINE: |
78c70acd JF |
1066 | steps = -view->lineno; |
1067 | break; | |
1068 | ||
4a2909a7 | 1069 | case REQ_MOVE_LAST_LINE: |
78c70acd JF |
1070 | steps = view->lines - view->lineno - 1; |
1071 | break; | |
1072 | ||
4a2909a7 | 1073 | case REQ_MOVE_PAGE_UP: |
78c70acd JF |
1074 | steps = view->height > view->lineno |
1075 | ? -view->lineno : -view->height; | |
1076 | break; | |
1077 | ||
4a2909a7 | 1078 | case REQ_MOVE_PAGE_DOWN: |
78c70acd JF |
1079 | steps = view->lineno + view->height >= view->lines |
1080 | ? view->lines - view->lineno - 1 : view->height; | |
1081 | break; | |
1082 | ||
4a2909a7 | 1083 | case REQ_MOVE_UP: |
fd85fef1 JF |
1084 | steps = -1; |
1085 | break; | |
b801d8b2 | 1086 | |
4a2909a7 | 1087 | case REQ_MOVE_DOWN: |
fd85fef1 JF |
1088 | steps = 1; |
1089 | break; | |
6b161b31 JF |
1090 | |
1091 | default: | |
1092 | die("request %d not handled in switch", request); | |
78c70acd | 1093 | } |
b801d8b2 | 1094 | |
4c6fabc2 | 1095 | if (steps <= 0 && view->lineno == 0) { |
eb98559e | 1096 | report("Cannot move beyond the first line"); |
78c70acd | 1097 | return; |
b801d8b2 | 1098 | |
6908bdbd | 1099 | } else if (steps >= 0 && view->lineno + 1 >= view->lines) { |
eb98559e | 1100 | report("Cannot move beyond the last line"); |
78c70acd | 1101 | return; |
fd85fef1 JF |
1102 | } |
1103 | ||
4c6fabc2 | 1104 | /* Move the current line */ |
fd85fef1 | 1105 | view->lineno += steps; |
4c6fabc2 JF |
1106 | assert(0 <= view->lineno && view->lineno < view->lines); |
1107 | ||
1108 | /* Repaint the old "current" line if we be scrolling */ | |
2e8488b4 JF |
1109 | if (ABS(steps) < view->height) { |
1110 | int prev_lineno = view->lineno - steps - view->offset; | |
1111 | ||
1112 | wmove(view->win, prev_lineno, 0); | |
1113 | wclrtoeol(view->win); | |
fe7233c3 | 1114 | draw_view_line(view, prev_lineno); |
2e8488b4 | 1115 | } |
fd85fef1 | 1116 | |
4c6fabc2 | 1117 | /* Check whether the view needs to be scrolled */ |
fd85fef1 JF |
1118 | if (view->lineno < view->offset || |
1119 | view->lineno >= view->offset + view->height) { | |
1120 | if (steps < 0 && -steps > view->offset) { | |
1121 | steps = -view->offset; | |
b76c2afc JF |
1122 | |
1123 | } else if (steps > 0) { | |
1124 | if (view->lineno == view->lines - 1 && | |
1125 | view->lines > view->height) { | |
1126 | steps = view->lines - view->offset - 1; | |
1127 | if (steps >= view->height) | |
1128 | steps -= view->height - 1; | |
1129 | } | |
b801d8b2 | 1130 | } |
78c70acd | 1131 | |
b3a54cba | 1132 | do_scroll_view(view, steps, redraw); |
fd85fef1 | 1133 | return; |
b801d8b2 JF |
1134 | } |
1135 | ||
4c6fabc2 | 1136 | /* Draw the current line */ |
fe7233c3 | 1137 | draw_view_line(view, view->lineno - view->offset); |
fd85fef1 | 1138 | |
b3a54cba JF |
1139 | if (!redraw) |
1140 | return; | |
1141 | ||
b801d8b2 JF |
1142 | redrawwin(view->win); |
1143 | wrefresh(view->win); | |
9d3f5834 | 1144 | report(""); |
b801d8b2 JF |
1145 | } |
1146 | ||
b801d8b2 | 1147 | |
2e8488b4 JF |
1148 | /* |
1149 | * Incremental updating | |
1150 | */ | |
b801d8b2 | 1151 | |
199d1288 JF |
1152 | static void |
1153 | end_update(struct view *view) | |
1154 | { | |
1155 | if (!view->pipe) | |
1156 | return; | |
1157 | set_nonblocking_input(FALSE); | |
1158 | if (view->pipe == stdin) | |
1159 | fclose(view->pipe); | |
1160 | else | |
1161 | pclose(view->pipe); | |
1162 | view->pipe = NULL; | |
1163 | } | |
1164 | ||
03a93dbb | 1165 | static bool |
b801d8b2 JF |
1166 | begin_update(struct view *view) |
1167 | { | |
4685845e | 1168 | const char *id = view->id; |
fd85fef1 | 1169 | |
199d1288 JF |
1170 | if (view->pipe) |
1171 | end_update(view); | |
1172 | ||
03a93dbb JF |
1173 | if (opt_cmd[0]) { |
1174 | string_copy(view->cmd, opt_cmd); | |
1175 | opt_cmd[0] = 0; | |
8855ada4 JF |
1176 | /* When running random commands, the view ref could have become |
1177 | * invalid so clear it. */ | |
1178 | view->ref[0] = 0; | |
03a93dbb | 1179 | } else { |
4685845e | 1180 | const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt; |
1ba2ae4b JF |
1181 | |
1182 | if (snprintf(view->cmd, sizeof(view->cmd), format, | |
1183 | id, id, id, id, id) >= sizeof(view->cmd)) | |
03a93dbb JF |
1184 | return FALSE; |
1185 | } | |
b801d8b2 | 1186 | |
6908bdbd JF |
1187 | /* Special case for the pager view. */ |
1188 | if (opt_pipe) { | |
1189 | view->pipe = opt_pipe; | |
1190 | opt_pipe = NULL; | |
1191 | } else { | |
1192 | view->pipe = popen(view->cmd, "r"); | |
1193 | } | |
1194 | ||
2e8488b4 JF |
1195 | if (!view->pipe) |
1196 | return FALSE; | |
b801d8b2 | 1197 | |
6b161b31 | 1198 | set_nonblocking_input(TRUE); |
b801d8b2 JF |
1199 | |
1200 | view->offset = 0; | |
1201 | view->lines = 0; | |
1202 | view->lineno = 0; | |
49f2b43f | 1203 | string_copy(view->vid, id); |
b801d8b2 | 1204 | |
2e8488b4 JF |
1205 | if (view->line) { |
1206 | int i; | |
1207 | ||
1208 | for (i = 0; i < view->lines; i++) | |
fe7233c3 JF |
1209 | if (view->line[i].data) |
1210 | free(view->line[i].data); | |
2e8488b4 JF |
1211 | |
1212 | free(view->line); | |
1213 | view->line = NULL; | |
1214 | } | |
1215 | ||
1216 | view->start_time = time(NULL); | |
1217 | ||
b801d8b2 JF |
1218 | return TRUE; |
1219 | } | |
1220 | ||
03a93dbb | 1221 | static bool |
b801d8b2 JF |
1222 | update_view(struct view *view) |
1223 | { | |
1224 | char buffer[BUFSIZ]; | |
1225 | char *line; | |
fe7233c3 | 1226 | struct line *tmp; |
82e78006 JF |
1227 | /* The number of lines to read. If too low it will cause too much |
1228 | * redrawing (and possible flickering), if too high responsiveness | |
1229 | * will suffer. */ | |
8855ada4 | 1230 | unsigned long lines = view->height; |
82e78006 | 1231 | int redraw_from = -1; |
b801d8b2 JF |
1232 | |
1233 | if (!view->pipe) | |
1234 | return TRUE; | |
1235 | ||
82e78006 JF |
1236 | /* Only redraw if lines are visible. */ |
1237 | if (view->offset + view->height >= view->lines) | |
1238 | redraw_from = view->lines - view->offset; | |
b801d8b2 JF |
1239 | |
1240 | tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines)); | |
1241 | if (!tmp) | |
1242 | goto alloc_error; | |
1243 | ||
1244 | view->line = tmp; | |
1245 | ||
1246 | while ((line = fgets(buffer, sizeof(buffer), view->pipe))) { | |
c34d9c9f | 1247 | int linelen = strlen(line); |
b801d8b2 | 1248 | |
fe7233c3 JF |
1249 | struct line *prev = view->lines |
1250 | ? &view->line[view->lines - 1] | |
1251 | : NULL; | |
1252 | ||
b801d8b2 JF |
1253 | if (linelen) |
1254 | line[linelen - 1] = 0; | |
1255 | ||
fe7233c3 | 1256 | if (!view->ops->read(view, prev, line)) |
b801d8b2 | 1257 | goto alloc_error; |
fd85fef1 JF |
1258 | |
1259 | if (lines-- == 1) | |
1260 | break; | |
b801d8b2 JF |
1261 | } |
1262 | ||
8855ada4 JF |
1263 | { |
1264 | int digits; | |
1265 | ||
1266 | lines = view->lines; | |
1267 | for (digits = 0; lines; digits++) | |
1268 | lines /= 10; | |
1269 | ||
1270 | /* Keep the displayed view in sync with line number scaling. */ | |
1271 | if (digits != view->digits) { | |
1272 | view->digits = digits; | |
1273 | redraw_from = 0; | |
1274 | } | |
1275 | } | |
1276 | ||
82e78006 JF |
1277 | if (redraw_from >= 0) { |
1278 | /* If this is an incremental update, redraw the previous line | |
a28bcc22 JF |
1279 | * since for commits some members could have changed when |
1280 | * loading the main view. */ | |
82e78006 JF |
1281 | if (redraw_from > 0) |
1282 | redraw_from--; | |
1283 | ||
1284 | /* Incrementally draw avoids flickering. */ | |
1285 | redraw_view_from(view, redraw_from); | |
4c6fabc2 | 1286 | } |
b801d8b2 | 1287 | |
eb98559e JF |
1288 | /* Update the title _after_ the redraw so that if the redraw picks up a |
1289 | * commit reference in view->ref it'll be available here. */ | |
1290 | update_view_title(view); | |
1291 | ||
b801d8b2 | 1292 | if (ferror(view->pipe)) { |
03a93dbb | 1293 | report("Failed to read: %s", strerror(errno)); |
b801d8b2 JF |
1294 | goto end; |
1295 | ||
1296 | } else if (feof(view->pipe)) { | |
a28bcc22 | 1297 | if (view == VIEW(REQ_VIEW_HELP)) { |
4685845e | 1298 | const char *msg = TIG_HELP; |
468876c9 JF |
1299 | |
1300 | if (view->lines == 0) { | |
1301 | /* Slightly ugly, but abusing view->ref keeps | |
1302 | * the error message. */ | |
1303 | string_copy(view->ref, "No help available"); | |
1304 | msg = "The tig(1) manpage is not installed"; | |
1305 | } | |
1306 | ||
1307 | report("%s", msg); | |
2e8488b4 JF |
1308 | goto end; |
1309 | } | |
1310 | ||
f97f4012 | 1311 | report(""); |
b801d8b2 JF |
1312 | goto end; |
1313 | } | |
1314 | ||
1315 | return TRUE; | |
1316 | ||
1317 | alloc_error: | |
2e8488b4 | 1318 | report("Allocation failure"); |
b801d8b2 JF |
1319 | |
1320 | end: | |
1321 | end_update(view); | |
1322 | return FALSE; | |
1323 | } | |
1324 | ||
49f2b43f JF |
1325 | enum open_flags { |
1326 | OPEN_DEFAULT = 0, /* Use default view switching. */ | |
1327 | OPEN_SPLIT = 1, /* Split current view. */ | |
1328 | OPEN_BACKGROUNDED = 2, /* Backgrounded. */ | |
1329 | OPEN_RELOAD = 4, /* Reload view even if it is the current. */ | |
1330 | }; | |
1331 | ||
6b161b31 | 1332 | static void |
49f2b43f | 1333 | open_view(struct view *prev, enum request request, enum open_flags flags) |
b801d8b2 | 1334 | { |
49f2b43f JF |
1335 | bool backgrounded = !!(flags & OPEN_BACKGROUNDED); |
1336 | bool split = !!(flags & OPEN_SPLIT); | |
1337 | bool reload = !!(flags & OPEN_RELOAD); | |
a28bcc22 | 1338 | struct view *view = VIEW(request); |
9f41488f | 1339 | int nviews = displayed_views(); |
6e950a52 | 1340 | struct view *base_view = display[0]; |
b801d8b2 | 1341 | |
49f2b43f | 1342 | if (view == prev && nviews == 1 && !reload) { |
6b161b31 JF |
1343 | report("Already in %s view", view->name); |
1344 | return; | |
1345 | } | |
b801d8b2 | 1346 | |
8855ada4 | 1347 | if ((reload || strcmp(view->vid, view->id)) && |
03a93dbb | 1348 | !begin_update(view)) { |
6b161b31 JF |
1349 | report("Failed to load %s view", view->name); |
1350 | return; | |
1351 | } | |
a28bcc22 | 1352 | |
6b161b31 JF |
1353 | if (split) { |
1354 | display[current_view + 1] = view; | |
1355 | if (!backgrounded) | |
a28bcc22 | 1356 | current_view++; |
6b161b31 JF |
1357 | } else { |
1358 | /* Maximize the current view. */ | |
1359 | memset(display, 0, sizeof(display)); | |
1360 | current_view = 0; | |
1361 | display[current_view] = view; | |
a28bcc22 | 1362 | } |
b801d8b2 | 1363 | |
6e950a52 JF |
1364 | /* Resize the view when switching between split- and full-screen, |
1365 | * or when switching between two different full-screen views. */ | |
1366 | if (nviews != displayed_views() || | |
1367 | (nviews == 1 && base_view != display[0])) | |
a006db63 | 1368 | resize_display(); |
b801d8b2 | 1369 | |
a8891802 | 1370 | if (split && prev->lineno - prev->offset >= prev->height) { |
03a93dbb | 1371 | /* Take the title line into account. */ |
eb98559e | 1372 | int lines = prev->lineno - prev->offset - prev->height + 1; |
03a93dbb JF |
1373 | |
1374 | /* Scroll the view that was split if the current line is | |
1375 | * outside the new limited view. */ | |
b3a54cba | 1376 | do_scroll_view(prev, lines, TRUE); |
03a93dbb JF |
1377 | } |
1378 | ||
6b161b31 | 1379 | if (prev && view != prev) { |
9b995f0c | 1380 | if (split && !backgrounded) { |
f0b3ab80 JF |
1381 | /* "Blur" the previous view. */ |
1382 | update_view_title(prev); | |
9f396969 | 1383 | } |
f0b3ab80 | 1384 | |
f6da0b66 | 1385 | view->parent = prev; |
b801d8b2 JF |
1386 | } |
1387 | ||
9f396969 | 1388 | if (view->pipe && view->lines == 0) { |
03a93dbb JF |
1389 | /* Clear the old view and let the incremental updating refill |
1390 | * the screen. */ | |
1391 | wclear(view->win); | |
f97f4012 | 1392 | report(""); |
03a93dbb JF |
1393 | } else { |
1394 | redraw_view(view); | |
468876c9 JF |
1395 | if (view == VIEW(REQ_VIEW_HELP)) |
1396 | report("%s", TIG_HELP); | |
1397 | else | |
1398 | report(""); | |
03a93dbb | 1399 | } |
6706b2ba JF |
1400 | |
1401 | /* If the view is backgrounded the above calls to report() | |
1402 | * won't redraw the view title. */ | |
1403 | if (backgrounded) | |
1404 | update_view_title(view); | |
b801d8b2 JF |
1405 | } |
1406 | ||
1407 | ||
6b161b31 JF |
1408 | /* |
1409 | * User request switch noodle | |
1410 | */ | |
1411 | ||
b801d8b2 | 1412 | static int |
6b161b31 | 1413 | view_driver(struct view *view, enum request request) |
b801d8b2 | 1414 | { |
b801d8b2 JF |
1415 | int i; |
1416 | ||
1417 | switch (request) { | |
4a2909a7 JF |
1418 | case REQ_MOVE_UP: |
1419 | case REQ_MOVE_DOWN: | |
1420 | case REQ_MOVE_PAGE_UP: | |
1421 | case REQ_MOVE_PAGE_DOWN: | |
1422 | case REQ_MOVE_FIRST_LINE: | |
1423 | case REQ_MOVE_LAST_LINE: | |
b3a54cba | 1424 | move_view(view, request, TRUE); |
fd85fef1 JF |
1425 | break; |
1426 | ||
4a2909a7 JF |
1427 | case REQ_SCROLL_LINE_DOWN: |
1428 | case REQ_SCROLL_LINE_UP: | |
1429 | case REQ_SCROLL_PAGE_DOWN: | |
1430 | case REQ_SCROLL_PAGE_UP: | |
a28bcc22 | 1431 | scroll_view(view, request); |
b801d8b2 JF |
1432 | break; |
1433 | ||
4a2909a7 | 1434 | case REQ_VIEW_MAIN: |
4a2909a7 | 1435 | case REQ_VIEW_DIFF: |
2e8488b4 JF |
1436 | case REQ_VIEW_LOG: |
1437 | case REQ_VIEW_HELP: | |
6908bdbd | 1438 | case REQ_VIEW_PAGER: |
49f2b43f | 1439 | open_view(view, request, OPEN_DEFAULT); |
b801d8b2 JF |
1440 | break; |
1441 | ||
b3a54cba JF |
1442 | case REQ_NEXT: |
1443 | case REQ_PREVIOUS: | |
1444 | request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP; | |
1445 | ||
1446 | if (view == VIEW(REQ_VIEW_DIFF) && | |
1447 | view->parent == VIEW(REQ_VIEW_MAIN)) { | |
f0b3ab80 | 1448 | bool redraw = display[1] == view; |
b3a54cba JF |
1449 | |
1450 | view = view->parent; | |
1451 | move_view(view, request, redraw); | |
f0b3ab80 JF |
1452 | if (redraw) |
1453 | update_view_title(view); | |
b3a54cba JF |
1454 | } else { |
1455 | move_view(view, request, TRUE); | |
1456 | break; | |
1457 | } | |
6706b2ba JF |
1458 | /* Fall-through */ |
1459 | ||
6b161b31 | 1460 | case REQ_ENTER: |
6908bdbd JF |
1461 | if (!view->lines) { |
1462 | report("Nothing to enter"); | |
1463 | break; | |
1464 | } | |
fe7233c3 | 1465 | return view->ops->enter(view, &view->line[view->lineno]); |
6b161b31 | 1466 | |
03a93dbb JF |
1467 | case REQ_VIEW_NEXT: |
1468 | { | |
9f41488f | 1469 | int nviews = displayed_views(); |
03a93dbb JF |
1470 | int next_view = (current_view + 1) % nviews; |
1471 | ||
1472 | if (next_view == current_view) { | |
1473 | report("Only one view is displayed"); | |
1474 | break; | |
1475 | } | |
1476 | ||
1477 | current_view = next_view; | |
1478 | /* Blur out the title of the previous view. */ | |
1479 | update_view_title(view); | |
6734f6b9 | 1480 | report(""); |
03a93dbb JF |
1481 | break; |
1482 | } | |
4a2909a7 | 1483 | case REQ_TOGGLE_LINE_NUMBERS: |
b76c2afc | 1484 | opt_line_number = !opt_line_number; |
20bb5e18 | 1485 | redraw_display(); |
b801d8b2 JF |
1486 | break; |
1487 | ||
03a93dbb | 1488 | case REQ_PROMPT: |
8855ada4 | 1489 | /* Always reload^Wrerun commands from the prompt. */ |
49f2b43f | 1490 | open_view(view, opt_request, OPEN_RELOAD); |
03a93dbb JF |
1491 | break; |
1492 | ||
4a2909a7 | 1493 | case REQ_STOP_LOADING: |
59a45d3a JF |
1494 | for (i = 0; i < ARRAY_SIZE(views); i++) { |
1495 | view = &views[i]; | |
2e8488b4 | 1496 | if (view->pipe) |
6a7bb912 | 1497 | report("Stopped loading the %s view", view->name), |
03a93dbb JF |
1498 | end_update(view); |
1499 | } | |
b801d8b2 JF |
1500 | break; |
1501 | ||
4a2909a7 | 1502 | case REQ_SHOW_VERSION: |
6cb291b7 | 1503 | report("%s (built %s)", VERSION, __DATE__); |
b801d8b2 JF |
1504 | return TRUE; |
1505 | ||
fac7db6c JF |
1506 | case REQ_SCREEN_RESIZE: |
1507 | resize_display(); | |
1508 | /* Fall-through */ | |
4a2909a7 | 1509 | case REQ_SCREEN_REDRAW: |
20bb5e18 | 1510 | redraw_display(); |
4a2909a7 JF |
1511 | break; |
1512 | ||
1513 | case REQ_SCREEN_UPDATE: | |
b801d8b2 JF |
1514 | doupdate(); |
1515 | return TRUE; | |
1516 | ||
4f9b667a | 1517 | case REQ_VIEW_CLOSE: |
2fcf5401 JF |
1518 | /* XXX: Mark closed views by letting view->parent point to the |
1519 | * view itself. Parents to closed view should never be | |
1520 | * followed. */ | |
1521 | if (view->parent && | |
1522 | view->parent->parent != view->parent) { | |
4f9b667a JF |
1523 | memset(display, 0, sizeof(display)); |
1524 | current_view = 0; | |
f6da0b66 | 1525 | display[current_view] = view->parent; |
2fcf5401 | 1526 | view->parent = view; |
4f9b667a JF |
1527 | resize_display(); |
1528 | redraw_display(); | |
1529 | break; | |
1530 | } | |
1531 | /* Fall-through */ | |
b801d8b2 JF |
1532 | case REQ_QUIT: |
1533 | return FALSE; | |
1534 | ||
1535 | default: | |
2e8488b4 | 1536 | /* An unknown key will show most commonly used commands. */ |
468876c9 | 1537 | report("Unknown key, press 'h' for help"); |
b801d8b2 JF |
1538 | return TRUE; |
1539 | } | |
1540 | ||
1541 | return TRUE; | |
1542 | } | |
1543 | ||
1544 | ||
1545 | /* | |
ff26aa29 | 1546 | * Pager backend |
b801d8b2 JF |
1547 | */ |
1548 | ||
6b161b31 | 1549 | static bool |
fe7233c3 | 1550 | pager_draw(struct view *view, struct line *line, unsigned int lineno) |
b801d8b2 | 1551 | { |
fe7233c3 JF |
1552 | char *text = line->data; |
1553 | enum line_type type = line->type; | |
1554 | int textlen = strlen(text); | |
78c70acd | 1555 | int attr; |
b801d8b2 | 1556 | |
6706b2ba JF |
1557 | wmove(view->win, lineno, 0); |
1558 | ||
fd85fef1 | 1559 | if (view->offset + lineno == view->lineno) { |
8855ada4 | 1560 | if (type == LINE_COMMIT) { |
fe7233c3 | 1561 | string_copy(view->ref, text + 7); |
03a93dbb JF |
1562 | string_copy(ref_commit, view->ref); |
1563 | } | |
8855ada4 | 1564 | |
78c70acd | 1565 | type = LINE_CURSOR; |
6706b2ba | 1566 | wchgat(view->win, -1, 0, type, NULL); |
fd85fef1 JF |
1567 | } |
1568 | ||
78c70acd | 1569 | attr = get_line_attr(type); |
b801d8b2 | 1570 | wattrset(view->win, attr); |
b76c2afc | 1571 | |
6706b2ba JF |
1572 | if (opt_line_number || opt_tab_size < TABSIZE) { |
1573 | static char spaces[] = " "; | |
1574 | int col_offset = 0, col = 0; | |
1575 | ||
1576 | if (opt_line_number) { | |
1577 | unsigned long real_lineno = view->offset + lineno + 1; | |
82e78006 | 1578 | |
6706b2ba JF |
1579 | if (real_lineno == 1 || |
1580 | (real_lineno % opt_num_interval) == 0) { | |
1581 | wprintw(view->win, "%.*d", view->digits, real_lineno); | |
8855ada4 | 1582 | |
6706b2ba JF |
1583 | } else { |
1584 | waddnstr(view->win, spaces, | |
1585 | MIN(view->digits, STRING_SIZE(spaces))); | |
1586 | } | |
1587 | waddstr(view->win, ": "); | |
1588 | col_offset = view->digits + 2; | |
1589 | } | |
8855ada4 | 1590 | |
fe7233c3 | 1591 | while (text && col_offset + col < view->width) { |
6706b2ba | 1592 | int cols_max = view->width - col_offset - col; |
fe7233c3 | 1593 | char *pos = text; |
6706b2ba | 1594 | int cols; |
4c6fabc2 | 1595 | |
fe7233c3 JF |
1596 | if (*text == '\t') { |
1597 | text++; | |
6706b2ba | 1598 | assert(sizeof(spaces) > TABSIZE); |
fe7233c3 | 1599 | pos = spaces; |
6706b2ba | 1600 | cols = opt_tab_size - (col % opt_tab_size); |
82e78006 | 1601 | |
b76c2afc | 1602 | } else { |
fe7233c3 JF |
1603 | text = strchr(text, '\t'); |
1604 | cols = line ? text - pos : strlen(pos); | |
b76c2afc | 1605 | } |
6706b2ba | 1606 | |
fe7233c3 | 1607 | waddnstr(view->win, pos, MIN(cols, cols_max)); |
6706b2ba | 1608 | col += cols; |
b76c2afc | 1609 | } |
b76c2afc JF |
1610 | |
1611 | } else { | |
6706b2ba | 1612 | int col = 0, pos = 0; |
b801d8b2 | 1613 | |
fe7233c3 JF |
1614 | for (; pos < textlen && col < view->width; pos++, col++) |
1615 | if (text[pos] == '\t') | |
6706b2ba JF |
1616 | col += TABSIZE - (col % TABSIZE) - 1; |
1617 | ||
fe7233c3 | 1618 | waddnstr(view->win, text, pos); |
6706b2ba | 1619 | } |
2e8488b4 | 1620 | |
b801d8b2 JF |
1621 | return TRUE; |
1622 | } | |
1623 | ||
6b161b31 | 1624 | static bool |
fe7233c3 | 1625 | pager_read(struct view *view, struct line *prev, char *line) |
22f66b0a | 1626 | { |
6706b2ba JF |
1627 | /* Compress empty lines in the help view. */ |
1628 | if (view == VIEW(REQ_VIEW_HELP) && | |
fe7233c3 | 1629 | !*line && prev && !*((char *) prev->data)) |
6706b2ba JF |
1630 | return TRUE; |
1631 | ||
fe7233c3 JF |
1632 | view->line[view->lines].data = strdup(line); |
1633 | if (!view->line[view->lines].data) | |
22f66b0a JF |
1634 | return FALSE; |
1635 | ||
fe7233c3 JF |
1636 | view->line[view->lines].type = get_line_type(line); |
1637 | ||
22f66b0a JF |
1638 | view->lines++; |
1639 | return TRUE; | |
1640 | } | |
1641 | ||
6b161b31 | 1642 | static bool |
fe7233c3 | 1643 | pager_enter(struct view *view, struct line *line) |
6b161b31 | 1644 | { |
91e8e277 | 1645 | int split = 0; |
6b161b31 | 1646 | |
9fbbd28f JF |
1647 | if (line->type == LINE_COMMIT && |
1648 | (view == VIEW(REQ_VIEW_LOG) || | |
1649 | view == VIEW(REQ_VIEW_PAGER))) { | |
91e8e277 JF |
1650 | open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT); |
1651 | split = 1; | |
67e48ac5 JF |
1652 | } |
1653 | ||
91e8e277 JF |
1654 | /* Always scroll the view even if it was split. That way |
1655 | * you can use Enter to scroll through the log view and | |
1656 | * split open each commit diff. */ | |
1657 | scroll_view(view, REQ_SCROLL_LINE_DOWN); | |
1658 | ||
1659 | /* FIXME: A minor workaround. Scrolling the view will call report("") | |
9d82d824 JF |
1660 | * but if we are scrolling a non-current view this won't properly |
1661 | * update the view title. */ | |
91e8e277 JF |
1662 | if (split) |
1663 | update_view_title(view); | |
6b161b31 JF |
1664 | |
1665 | return TRUE; | |
1666 | } | |
1667 | ||
6b161b31 | 1668 | static struct view_ops pager_ops = { |
6734f6b9 | 1669 | "line", |
6b161b31 JF |
1670 | pager_draw, |
1671 | pager_read, | |
1672 | pager_enter, | |
1673 | }; | |
1674 | ||
80ce96ea | 1675 | |
ff26aa29 JF |
1676 | /* |
1677 | * Main view backend | |
1678 | */ | |
1679 | ||
1680 | struct commit { | |
1681 | char id[41]; /* SHA1 ID. */ | |
1682 | char title[75]; /* The first line of the commit message. */ | |
1683 | char author[75]; /* The author of the commit. */ | |
1684 | struct tm time; /* Date from the author ident. */ | |
1685 | struct ref **refs; /* Repository references; tags & branch heads. */ | |
1686 | }; | |
c34d9c9f | 1687 | |
6b161b31 | 1688 | static bool |
fe7233c3 | 1689 | main_draw(struct view *view, struct line *line, unsigned int lineno) |
22f66b0a | 1690 | { |
2e8488b4 | 1691 | char buf[DATE_COLS + 1]; |
fe7233c3 | 1692 | struct commit *commit = line->data; |
78c70acd | 1693 | enum line_type type; |
6706b2ba | 1694 | int col = 0; |
b76c2afc | 1695 | size_t timelen; |
10e290ee | 1696 | size_t authorlen; |
9989bf60 | 1697 | int trimmed = 1; |
22f66b0a | 1698 | |
4c6fabc2 JF |
1699 | if (!*commit->author) |
1700 | return FALSE; | |
22f66b0a | 1701 | |
6706b2ba JF |
1702 | wmove(view->win, lineno, col); |
1703 | ||
22f66b0a | 1704 | if (view->offset + lineno == view->lineno) { |
03a93dbb | 1705 | string_copy(view->ref, commit->id); |
49f2b43f | 1706 | string_copy(ref_commit, view->ref); |
78c70acd | 1707 | type = LINE_CURSOR; |
6706b2ba JF |
1708 | wattrset(view->win, get_line_attr(type)); |
1709 | wchgat(view->win, -1, 0, type, NULL); | |
1710 | ||
78c70acd | 1711 | } else { |
b76c2afc | 1712 | type = LINE_MAIN_COMMIT; |
6706b2ba | 1713 | wattrset(view->win, get_line_attr(LINE_MAIN_DATE)); |
b76c2afc JF |
1714 | } |
1715 | ||
4c6fabc2 | 1716 | timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time); |
b76c2afc | 1717 | waddnstr(view->win, buf, timelen); |
4c6fabc2 | 1718 | waddstr(view->win, " "); |
b76c2afc | 1719 | |
6706b2ba JF |
1720 | col += DATE_COLS; |
1721 | wmove(view->win, lineno, col); | |
1722 | if (type != LINE_CURSOR) | |
1723 | wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR)); | |
b76c2afc | 1724 | |
9989bf60 JF |
1725 | if (opt_utf8) { |
1726 | authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed); | |
1727 | } else { | |
1728 | authorlen = strlen(commit->author); | |
1729 | if (authorlen > AUTHOR_COLS - 2) { | |
1730 | authorlen = AUTHOR_COLS - 2; | |
1731 | trimmed = 1; | |
1732 | } | |
1733 | } | |
10e290ee JF |
1734 | |
1735 | if (trimmed) { | |
1736 | waddnstr(view->win, commit->author, authorlen); | |
6706b2ba JF |
1737 | if (type != LINE_CURSOR) |
1738 | wattrset(view->win, get_line_attr(LINE_MAIN_DELIM)); | |
b76c2afc JF |
1739 | waddch(view->win, '~'); |
1740 | } else { | |
1741 | waddstr(view->win, commit->author); | |
22f66b0a JF |
1742 | } |
1743 | ||
10e290ee | 1744 | col += AUTHOR_COLS; |
6706b2ba JF |
1745 | if (type != LINE_CURSOR) |
1746 | wattrset(view->win, A_NORMAL); | |
1747 | ||
1748 | mvwaddch(view->win, lineno, col, ACS_LTEE); | |
1749 | wmove(view->win, lineno, col + 2); | |
1750 | col += 2; | |
c34d9c9f JF |
1751 | |
1752 | if (commit->refs) { | |
1753 | size_t i = 0; | |
1754 | ||
1755 | do { | |
6706b2ba JF |
1756 | if (type == LINE_CURSOR) |
1757 | ; | |
1758 | else if (commit->refs[i]->tag) | |
c34d9c9f JF |
1759 | wattrset(view->win, get_line_attr(LINE_MAIN_TAG)); |
1760 | else | |
1761 | wattrset(view->win, get_line_attr(LINE_MAIN_REF)); | |
1762 | waddstr(view->win, "["); | |
1763 | waddstr(view->win, commit->refs[i]->name); | |
1764 | waddstr(view->win, "]"); | |
6706b2ba JF |
1765 | if (type != LINE_CURSOR) |
1766 | wattrset(view->win, A_NORMAL); | |
c34d9c9f | 1767 | waddstr(view->win, " "); |
6706b2ba | 1768 | col += strlen(commit->refs[i]->name) + STRING_SIZE("[] "); |
c34d9c9f JF |
1769 | } while (commit->refs[i++]->next); |
1770 | } | |
1771 | ||
6706b2ba JF |
1772 | if (type != LINE_CURSOR) |
1773 | wattrset(view->win, get_line_attr(type)); | |
1774 | ||
1775 | { | |
1776 | int titlelen = strlen(commit->title); | |
1777 | ||
1778 | if (col + titlelen > view->width) | |
1779 | titlelen = view->width - col; | |
1780 | ||
1781 | waddnstr(view->win, commit->title, titlelen); | |
1782 | } | |
22f66b0a JF |
1783 | |
1784 | return TRUE; | |
1785 | } | |
1786 | ||
4c6fabc2 | 1787 | /* Reads git log --pretty=raw output and parses it into the commit struct. */ |
6b161b31 | 1788 | static bool |
fe7233c3 | 1789 | main_read(struct view *view, struct line *prev, char *line) |
22f66b0a | 1790 | { |
78c70acd JF |
1791 | enum line_type type = get_line_type(line); |
1792 | struct commit *commit; | |
22f66b0a | 1793 | |
78c70acd JF |
1794 | switch (type) { |
1795 | case LINE_COMMIT: | |
22f66b0a JF |
1796 | commit = calloc(1, sizeof(struct commit)); |
1797 | if (!commit) | |
1798 | return FALSE; | |
1799 | ||
4c6fabc2 | 1800 | line += STRING_SIZE("commit "); |
b76c2afc | 1801 | |
fe7233c3 | 1802 | view->line[view->lines++].data = commit; |
82e78006 | 1803 | string_copy(commit->id, line); |
c34d9c9f | 1804 | commit->refs = get_refs(commit->id); |
78c70acd | 1805 | break; |
22f66b0a | 1806 | |
8855ada4 | 1807 | case LINE_AUTHOR: |
b76c2afc | 1808 | { |
4c6fabc2 | 1809 | char *ident = line + STRING_SIZE("author "); |
b76c2afc JF |
1810 | char *end = strchr(ident, '<'); |
1811 | ||
fe7233c3 JF |
1812 | if (!prev) |
1813 | break; | |
1814 | ||
1815 | commit = prev->data; | |
1816 | ||
b76c2afc JF |
1817 | if (end) { |
1818 | for (; end > ident && isspace(end[-1]); end--) ; | |
1819 | *end = 0; | |
1820 | } | |
1821 | ||
82e78006 | 1822 | string_copy(commit->author, ident); |
b76c2afc | 1823 | |
4c6fabc2 | 1824 | /* Parse epoch and timezone */ |
b76c2afc JF |
1825 | if (end) { |
1826 | char *secs = strchr(end + 1, '>'); | |
1827 | char *zone; | |
1828 | time_t time; | |
1829 | ||
1830 | if (!secs || secs[1] != ' ') | |
1831 | break; | |
1832 | ||
1833 | secs += 2; | |
1834 | time = (time_t) atol(secs); | |
1835 | zone = strchr(secs, ' '); | |
4c6fabc2 | 1836 | if (zone && strlen(zone) == STRING_SIZE(" +0700")) { |
b76c2afc JF |
1837 | long tz; |
1838 | ||
1839 | zone++; | |
1840 | tz = ('0' - zone[1]) * 60 * 60 * 10; | |
1841 | tz += ('0' - zone[2]) * 60 * 60; | |
1842 | tz += ('0' - zone[3]) * 60; | |
1843 | tz += ('0' - zone[4]) * 60; | |
1844 | ||
1845 | if (zone[0] == '-') | |
1846 | tz = -tz; | |
1847 | ||
1848 | time -= tz; | |
1849 | } | |
1850 | gmtime_r(&time, &commit->time); | |
1851 | } | |
1852 | break; | |
1853 | } | |
78c70acd | 1854 | default: |
fe7233c3 | 1855 | if (!prev) |
2e8488b4 JF |
1856 | break; |
1857 | ||
fe7233c3 JF |
1858 | commit = prev->data; |
1859 | ||
2e8488b4 | 1860 | /* Fill in the commit title if it has not already been set. */ |
2e8488b4 JF |
1861 | if (commit->title[0]) |
1862 | break; | |
1863 | ||
1864 | /* Require titles to start with a non-space character at the | |
1865 | * offset used by git log. */ | |
eb98559e JF |
1866 | /* FIXME: More gracefull handling of titles; append "..." to |
1867 | * shortened titles, etc. */ | |
2e8488b4 | 1868 | if (strncmp(line, " ", 4) || |
eb98559e | 1869 | isspace(line[4])) |
82e78006 JF |
1870 | break; |
1871 | ||
1872 | string_copy(commit->title, line + 4); | |
22f66b0a JF |
1873 | } |
1874 | ||
1875 | return TRUE; | |
1876 | } | |
1877 | ||
6b161b31 | 1878 | static bool |
fe7233c3 | 1879 | main_enter(struct view *view, struct line *line) |
b801d8b2 | 1880 | { |
b3a54cba JF |
1881 | enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT; |
1882 | ||
1883 | open_view(view, REQ_VIEW_DIFF, flags); | |
6b161b31 | 1884 | return TRUE; |
b801d8b2 JF |
1885 | } |
1886 | ||
6b161b31 | 1887 | static struct view_ops main_ops = { |
6734f6b9 | 1888 | "commit", |
6b161b31 JF |
1889 | main_draw, |
1890 | main_read, | |
1891 | main_enter, | |
1892 | }; | |
2e8488b4 | 1893 | |
c34d9c9f | 1894 | |
468876c9 JF |
1895 | /** |
1896 | * KEYS | |
1897 | * ---- | |
1898 | * Below the default key bindings are shown. | |
1899 | **/ | |
1900 | ||
1901 | struct keymap { | |
1902 | int alias; | |
1903 | int request; | |
1904 | }; | |
1905 | ||
3a91b75e | 1906 | static struct keymap keymap[] = { |
468876c9 JF |
1907 | /** |
1908 | * View switching | |
1909 | * ~~~~~~~~~~~~~~ | |
1910 | * m:: | |
1911 | * Switch to main view. | |
1912 | * d:: | |
1913 | * Switch to diff view. | |
1914 | * l:: | |
1915 | * Switch to log view. | |
1916 | * p:: | |
1917 | * Switch to pager view. | |
1918 | * h:: | |
1919 | * Show man page. | |
b3a54cba JF |
1920 | **/ |
1921 | { 'm', REQ_VIEW_MAIN }, | |
1922 | { 'd', REQ_VIEW_DIFF }, | |
1923 | { 'l', REQ_VIEW_LOG }, | |
1924 | { 'p', REQ_VIEW_PAGER }, | |
1925 | { 'h', REQ_VIEW_HELP }, | |
1926 | ||
1927 | /** | |
1928 | * View manipulation | |
1929 | * ~~~~~~~~~~~~~~~~~ | |
4f9b667a | 1930 | * q:: |
f6da0b66 JF |
1931 | * Close view, if multiple views are open it will jump back to the |
1932 | * previous view in the view stack. If it is the last open view it | |
1933 | * will quit. Use 'Q' to quit all views at once. | |
67e48ac5 JF |
1934 | * Enter:: |
1935 | * This key is "context sensitive" depending on what view you are | |
1936 | * currently in. When in log view on a commit line or in the main | |
1937 | * view, split the view and show the commit diff. In the diff view | |
1938 | * pressing Enter will simply scroll the view one line down. | |
468876c9 JF |
1939 | * Tab:: |
1940 | * Switch to next view. | |
b3a54cba JF |
1941 | * Up:: |
1942 | * This key is "context sensitive" and will move the cursor one | |
1943 | * line up. However, uf you opened a diff view from the main view | |
1944 | * (split- or full-screen) it will change the cursor to point to | |
1945 | * the previous commit in the main view and update the diff view | |
1946 | * to display it. | |
1947 | * Down:: | |
1948 | * Similar to 'Up' but will move down. | |
468876c9 | 1949 | **/ |
4f9b667a | 1950 | { 'q', REQ_VIEW_CLOSE }, |
468876c9 JF |
1951 | { KEY_TAB, REQ_VIEW_NEXT }, |
1952 | { KEY_RETURN, REQ_ENTER }, | |
b3a54cba JF |
1953 | { KEY_UP, REQ_PREVIOUS }, |
1954 | { KEY_DOWN, REQ_NEXT }, | |
468876c9 JF |
1955 | |
1956 | /** | |
1957 | * Cursor navigation | |
1958 | * ~~~~~~~~~~~~~~~~~ | |
b3a54cba | 1959 | * j:: |
57bdf034 | 1960 | * Move cursor one line up. |
468876c9 | 1961 | * k:: |
b3a54cba | 1962 | * Move cursor one line down. |
468876c9 | 1963 | * PgUp:: |
c622eefa | 1964 | * b:: |
0df811cb | 1965 | * -:: |
57bdf034 | 1966 | * Move cursor one page up. |
468876c9 | 1967 | * PgDown:: |
c622eefa | 1968 | * Space:: |
468876c9 JF |
1969 | * Move cursor one page down. |
1970 | * Home:: | |
1971 | * Jump to first line. | |
1972 | * End:: | |
1973 | * Jump to last line. | |
1974 | **/ | |
b3a54cba JF |
1975 | { 'k', REQ_MOVE_UP }, |
1976 | { 'j', REQ_MOVE_DOWN }, | |
468876c9 JF |
1977 | { KEY_HOME, REQ_MOVE_FIRST_LINE }, |
1978 | { KEY_END, REQ_MOVE_LAST_LINE }, | |
1979 | { KEY_NPAGE, REQ_MOVE_PAGE_DOWN }, | |
c622eefa | 1980 | { ' ', REQ_MOVE_PAGE_DOWN }, |
468876c9 | 1981 | { KEY_PPAGE, REQ_MOVE_PAGE_UP }, |
c622eefa | 1982 | { 'b', REQ_MOVE_PAGE_UP }, |
0df811cb | 1983 | { '-', REQ_MOVE_PAGE_UP }, |
468876c9 JF |
1984 | |
1985 | /** | |
1986 | * Scrolling | |
1987 | * ~~~~~~~~~ | |
1988 | * Insert:: | |
1989 | * Scroll view one line up. | |
1990 | * Delete:: | |
1991 | * Scroll view one line down. | |
1992 | * w:: | |
1993 | * Scroll view one page up. | |
1994 | * s:: | |
1995 | * Scroll view one page down. | |
1996 | **/ | |
1997 | { KEY_IC, REQ_SCROLL_LINE_UP }, | |
1998 | { KEY_DC, REQ_SCROLL_LINE_DOWN }, | |
1999 | { 'w', REQ_SCROLL_PAGE_UP }, | |
2000 | { 's', REQ_SCROLL_PAGE_DOWN }, | |
2001 | ||
2002 | /** | |
2003 | * Misc | |
2004 | * ~~~~ | |
d9d1c722 JF |
2005 | * Q:: |
2006 | * Quit. | |
468876c9 JF |
2007 | * r:: |
2008 | * Redraw screen. | |
2009 | * z:: | |
2010 | * Stop all background loading. This can be useful if you use | |
2011 | * tig(1) in a repository with a long history without limiting | |
0721c53a | 2012 | * the revision log. |
468876c9 JF |
2013 | * v:: |
2014 | * Show version. | |
2015 | * n:: | |
2016 | * Toggle line numbers on/off. | |
2017 | * ':':: | |
2018 | * Open prompt. This allows you to specify what git command | |
2019 | * to run. Example: | |
2020 | * | |
2021 | * :log -p | |
2022 | **/ | |
d9d1c722 | 2023 | { 'Q', REQ_QUIT }, |
468876c9 JF |
2024 | { 'z', REQ_STOP_LOADING }, |
2025 | { 'v', REQ_SHOW_VERSION }, | |
2026 | { 'r', REQ_SCREEN_REDRAW }, | |
2027 | { 'n', REQ_TOGGLE_LINE_NUMBERS }, | |
2028 | { ':', REQ_PROMPT }, | |
2029 | ||
2030 | /* wgetch() with nodelay() enabled returns ERR when there's no input. */ | |
2031 | { ERR, REQ_SCREEN_UPDATE }, | |
2032 | ||
2033 | /* Use the ncurses SIGWINCH handler. */ | |
2034 | { KEY_RESIZE, REQ_SCREEN_RESIZE }, | |
2035 | }; | |
2036 | ||
2037 | static enum request | |
2038 | get_request(int key) | |
2039 | { | |
2040 | int i; | |
2041 | ||
2042 | for (i = 0; i < ARRAY_SIZE(keymap); i++) | |
2043 | if (keymap[i].alias == key) | |
2044 | return keymap[i].request; | |
2045 | ||
2046 | return (enum request) key; | |
2047 | } | |
2048 | ||
2049 | ||
6b161b31 | 2050 | /* |
10e290ee JF |
2051 | * Unicode / UTF-8 handling |
2052 | * | |
2053 | * NOTE: Much of the following code for dealing with unicode is derived from | |
2054 | * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is | |
2055 | * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28. | |
2056 | */ | |
2057 | ||
2058 | /* I've (over)annotated a lot of code snippets because I am not entirely | |
2059 | * confident that the approach taken by this small UTF-8 interface is correct. | |
2060 | * --jonas */ | |
2061 | ||
2062 | static inline int | |
2063 | unicode_width(unsigned long c) | |
2064 | { | |
2065 | if (c >= 0x1100 && | |
2066 | (c <= 0x115f /* Hangul Jamo */ | |
2067 | || c == 0x2329 | |
2068 | || c == 0x232a | |
2069 | || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f) | |
f97f4012 | 2070 | /* CJK ... Yi */ |
10e290ee JF |
2071 | || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */ |
2072 | || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */ | |
2073 | || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */ | |
2074 | || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */ | |
2075 | || (c >= 0xffe0 && c <= 0xffe6) | |
2076 | || (c >= 0x20000 && c <= 0x2fffd) | |
2077 | || (c >= 0x30000 && c <= 0x3fffd))) | |
2078 | return 2; | |
2079 | ||
2080 | return 1; | |
2081 | } | |
2082 | ||
2083 | /* Number of bytes used for encoding a UTF-8 character indexed by first byte. | |
2084 | * Illegal bytes are set one. */ | |
2085 | static const unsigned char utf8_bytes[256] = { | |
2086 | 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, | |
2087 | 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, | |
2088 | 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, | |
2089 | 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, | |
2090 | 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, | |
2091 | 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, | |
2092 | 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, | |
2093 | 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, | |
2094 | }; | |
2095 | ||
2096 | /* Decode UTF-8 multi-byte representation into a unicode character. */ | |
2097 | static inline unsigned long | |
2098 | utf8_to_unicode(const char *string, size_t length) | |
2099 | { | |
2100 | unsigned long unicode; | |
2101 | ||
2102 | switch (length) { | |
2103 | case 1: | |
2104 | unicode = string[0]; | |
2105 | break; | |
2106 | case 2: | |
2107 | unicode = (string[0] & 0x1f) << 6; | |
2108 | unicode += (string[1] & 0x3f); | |
2109 | break; | |
2110 | case 3: | |
2111 | unicode = (string[0] & 0x0f) << 12; | |
2112 | unicode += ((string[1] & 0x3f) << 6); | |
2113 | unicode += (string[2] & 0x3f); | |
2114 | break; | |
2115 | case 4: | |
2116 | unicode = (string[0] & 0x0f) << 18; | |
2117 | unicode += ((string[1] & 0x3f) << 12); | |
2118 | unicode += ((string[2] & 0x3f) << 6); | |
2119 | unicode += (string[3] & 0x3f); | |
2120 | break; | |
2121 | case 5: | |
2122 | unicode = (string[0] & 0x0f) << 24; | |
2123 | unicode += ((string[1] & 0x3f) << 18); | |
2124 | unicode += ((string[2] & 0x3f) << 12); | |
2125 | unicode += ((string[3] & 0x3f) << 6); | |
2126 | unicode += (string[4] & 0x3f); | |
2127 | break; | |
68b6e0eb | 2128 | case 6: |
10e290ee JF |
2129 | unicode = (string[0] & 0x01) << 30; |
2130 | unicode += ((string[1] & 0x3f) << 24); | |
2131 | unicode += ((string[2] & 0x3f) << 18); | |
2132 | unicode += ((string[3] & 0x3f) << 12); | |
2133 | unicode += ((string[4] & 0x3f) << 6); | |
2134 | unicode += (string[5] & 0x3f); | |
2135 | break; | |
2136 | default: | |
2137 | die("Invalid unicode length"); | |
2138 | } | |
2139 | ||
2140 | /* Invalid characters could return the special 0xfffd value but NUL | |
2141 | * should be just as good. */ | |
2142 | return unicode > 0xffff ? 0 : unicode; | |
2143 | } | |
2144 | ||
2145 | /* Calculates how much of string can be shown within the given maximum width | |
2146 | * and sets trimmed parameter to non-zero value if all of string could not be | |
2147 | * shown. | |
2148 | * | |
2149 | * Additionally, adds to coloffset how many many columns to move to align with | |
2150 | * the expected position. Takes into account how multi-byte and double-width | |
2151 | * characters will effect the cursor position. | |
2152 | * | |
2153 | * Returns the number of bytes to output from string to satisfy max_width. */ | |
2154 | static size_t | |
2155 | utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed) | |
2156 | { | |
2157 | const char *start = string; | |
2158 | const char *end = strchr(string, '\0'); | |
2159 | size_t mbwidth = 0; | |
2160 | size_t width = 0; | |
2161 | ||
2162 | *trimmed = 0; | |
2163 | ||
2164 | while (string < end) { | |
2165 | int c = *(unsigned char *) string; | |
2166 | unsigned char bytes = utf8_bytes[c]; | |
2167 | size_t ucwidth; | |
2168 | unsigned long unicode; | |
2169 | ||
2170 | if (string + bytes > end) | |
2171 | break; | |
2172 | ||
2173 | /* Change representation to figure out whether | |
2174 | * it is a single- or double-width character. */ | |
2175 | ||
2176 | unicode = utf8_to_unicode(string, bytes); | |
2177 | /* FIXME: Graceful handling of invalid unicode character. */ | |
2178 | if (!unicode) | |
2179 | break; | |
2180 | ||
2181 | ucwidth = unicode_width(unicode); | |
2182 | width += ucwidth; | |
2183 | if (width > max_width) { | |
2184 | *trimmed = 1; | |
2185 | break; | |
2186 | } | |
2187 | ||
2188 | /* The column offset collects the differences between the | |
2189 | * number of bytes encoding a character and the number of | |
2190 | * columns will be used for rendering said character. | |
2191 | * | |
2192 | * So if some character A is encoded in 2 bytes, but will be | |
2193 | * represented on the screen using only 1 byte this will and up | |
2194 | * adding 1 to the multi-byte column offset. | |
2195 | * | |
2196 | * Assumes that no double-width character can be encoding in | |
2197 | * less than two bytes. */ | |
2198 | if (bytes > ucwidth) | |
2199 | mbwidth += bytes - ucwidth; | |
2200 | ||
2201 | string += bytes; | |
2202 | } | |
2203 | ||
2204 | *coloffset += mbwidth; | |
2205 | ||
2206 | return string - start; | |
2207 | } | |
2208 | ||
2209 | ||
2210 | /* | |
6b161b31 JF |
2211 | * Status management |
2212 | */ | |
2e8488b4 | 2213 | |
8855ada4 | 2214 | /* Whether or not the curses interface has been initialized. */ |
68b6e0eb | 2215 | static bool cursed = FALSE; |
8855ada4 | 2216 | |
6b161b31 JF |
2217 | /* The status window is used for polling keystrokes. */ |
2218 | static WINDOW *status_win; | |
4a2909a7 | 2219 | |
2e8488b4 | 2220 | /* Update status and title window. */ |
4a2909a7 JF |
2221 | static void |
2222 | report(const char *msg, ...) | |
2223 | { | |
6706b2ba JF |
2224 | static bool empty = TRUE; |
2225 | struct view *view = display[current_view]; | |
b76c2afc | 2226 | |
6706b2ba JF |
2227 | if (!empty || *msg) { |
2228 | va_list args; | |
4a2909a7 | 2229 | |
6706b2ba | 2230 | va_start(args, msg); |
4b76734f | 2231 | |
6706b2ba JF |
2232 | werase(status_win); |
2233 | wmove(status_win, 0, 0); | |
2234 | if (*msg) { | |
2235 | vwprintw(status_win, msg, args); | |
2236 | empty = FALSE; | |
2237 | } else { | |
2238 | empty = TRUE; | |
2239 | } | |
2240 | wrefresh(status_win); | |
b801d8b2 | 2241 | |
6706b2ba JF |
2242 | va_end(args); |
2243 | } | |
2244 | ||
2245 | update_view_title(view); | |
85af6284 | 2246 | update_display_cursor(); |
b801d8b2 JF |
2247 | } |
2248 | ||
6b161b31 JF |
2249 | /* Controls when nodelay should be in effect when polling user input. */ |
2250 | static void | |
1ba2ae4b | 2251 | set_nonblocking_input(bool loading) |
b801d8b2 | 2252 | { |
6706b2ba | 2253 | static unsigned int loading_views; |
b801d8b2 | 2254 | |
6706b2ba JF |
2255 | if ((loading == FALSE && loading_views-- == 1) || |
2256 | (loading == TRUE && loading_views++ == 0)) | |
1ba2ae4b | 2257 | nodelay(status_win, loading); |
6b161b31 JF |
2258 | } |
2259 | ||
2260 | static void | |
2261 | init_display(void) | |
2262 | { | |
2263 | int x, y; | |
b76c2afc | 2264 | |
6908bdbd JF |
2265 | /* Initialize the curses library */ |
2266 | if (isatty(STDIN_FILENO)) { | |
8855ada4 | 2267 | cursed = !!initscr(); |
6908bdbd JF |
2268 | } else { |
2269 | /* Leave stdin and stdout alone when acting as a pager. */ | |
2270 | FILE *io = fopen("/dev/tty", "r+"); | |
2271 | ||
8855ada4 | 2272 | cursed = !!newterm(NULL, io, io); |
6908bdbd JF |
2273 | } |
2274 | ||
8855ada4 JF |
2275 | if (!cursed) |
2276 | die("Failed to initialize curses"); | |
2277 | ||
2e8488b4 JF |
2278 | nonl(); /* Tell curses not to do NL->CR/NL on output */ |
2279 | cbreak(); /* Take input chars one at a time, no wait for \n */ | |
2280 | noecho(); /* Don't echo input */ | |
b801d8b2 | 2281 | leaveok(stdscr, TRUE); |
b801d8b2 JF |
2282 | |
2283 | if (has_colors()) | |
2284 | init_colors(); | |
2285 | ||
2286 | getmaxyx(stdscr, y, x); | |
2287 | status_win = newwin(1, 0, y - 1, 0); | |
2288 | if (!status_win) | |
2289 | die("Failed to create status window"); | |
2290 | ||
2291 | /* Enable keyboard mapping */ | |
2292 | keypad(status_win, TRUE); | |
78c70acd | 2293 | wbkgdset(status_win, get_line_attr(LINE_STATUS)); |
6b161b31 JF |
2294 | } |
2295 | ||
c34d9c9f JF |
2296 | |
2297 | /* | |
2298 | * Repository references | |
2299 | */ | |
2300 | ||
2301 | static struct ref *refs; | |
3a91b75e | 2302 | static size_t refs_size; |
c34d9c9f | 2303 | |
1307df1a JF |
2304 | /* Id <-> ref store */ |
2305 | static struct ref ***id_refs; | |
2306 | static size_t id_refs_size; | |
2307 | ||
c34d9c9f JF |
2308 | static struct ref ** |
2309 | get_refs(char *id) | |
2310 | { | |
1307df1a JF |
2311 | struct ref ***tmp_id_refs; |
2312 | struct ref **ref_list = NULL; | |
2313 | size_t ref_list_size = 0; | |
c34d9c9f JF |
2314 | size_t i; |
2315 | ||
1307df1a JF |
2316 | for (i = 0; i < id_refs_size; i++) |
2317 | if (!strcmp(id, id_refs[i][0]->id)) | |
2318 | return id_refs[i]; | |
2319 | ||
2320 | tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs)); | |
2321 | if (!tmp_id_refs) | |
2322 | return NULL; | |
2323 | ||
2324 | id_refs = tmp_id_refs; | |
2325 | ||
c34d9c9f JF |
2326 | for (i = 0; i < refs_size; i++) { |
2327 | struct ref **tmp; | |
2328 | ||
2329 | if (strcmp(id, refs[i].id)) | |
2330 | continue; | |
2331 | ||
1307df1a | 2332 | tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list)); |
c34d9c9f | 2333 | if (!tmp) { |
1307df1a JF |
2334 | if (ref_list) |
2335 | free(ref_list); | |
c34d9c9f JF |
2336 | return NULL; |
2337 | } | |
2338 | ||
1307df1a JF |
2339 | ref_list = tmp; |
2340 | if (ref_list_size > 0) | |
2341 | ref_list[ref_list_size - 1]->next = 1; | |
2342 | ref_list[ref_list_size] = &refs[i]; | |
3af8774e JF |
2343 | |
2344 | /* XXX: The properties of the commit chains ensures that we can | |
2345 | * safely modify the shared ref. The repo references will | |
2346 | * always be similar for the same id. */ | |
1307df1a JF |
2347 | ref_list[ref_list_size]->next = 0; |
2348 | ref_list_size++; | |
c34d9c9f JF |
2349 | } |
2350 | ||
1307df1a JF |
2351 | if (ref_list) |
2352 | id_refs[id_refs_size++] = ref_list; | |
2353 | ||
2354 | return ref_list; | |
c34d9c9f JF |
2355 | } |
2356 | ||
2357 | static int | |
d0cea5f9 | 2358 | read_ref(char *id, int idlen, char *name, int namelen) |
c34d9c9f | 2359 | { |
d0cea5f9 JF |
2360 | struct ref *ref; |
2361 | bool tag = FALSE; | |
2362 | bool tag_commit = FALSE; | |
2363 | ||
2364 | /* Commits referenced by tags has "^{}" appended. */ | |
2365 | if (name[namelen - 1] == '}') { | |
2366 | while (namelen > 0 && name[namelen] != '^') | |
2367 | namelen--; | |
2368 | if (namelen > 0) | |
2369 | tag_commit = TRUE; | |
2370 | name[namelen] = 0; | |
2371 | } | |
c34d9c9f | 2372 | |
d0cea5f9 JF |
2373 | if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) { |
2374 | if (!tag_commit) | |
2375 | return OK; | |
2376 | name += STRING_SIZE("refs/tags/"); | |
2377 | tag = TRUE; | |
c34d9c9f | 2378 | |
d0cea5f9 JF |
2379 | } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) { |
2380 | name += STRING_SIZE("refs/heads/"); | |
c34d9c9f | 2381 | |
d0cea5f9 JF |
2382 | } else if (!strcmp(name, "HEAD")) { |
2383 | return OK; | |
2384 | } | |
6706b2ba | 2385 | |
d0cea5f9 JF |
2386 | refs = realloc(refs, sizeof(*refs) * (refs_size + 1)); |
2387 | if (!refs) | |
2388 | return ERR; | |
c34d9c9f | 2389 | |
d0cea5f9 JF |
2390 | ref = &refs[refs_size++]; |
2391 | ref->name = strdup(name); | |
2392 | if (!ref->name) | |
2393 | return ERR; | |
3af8774e | 2394 | |
d0cea5f9 JF |
2395 | ref->tag = tag; |
2396 | string_copy(ref->id, id); | |
3af8774e | 2397 | |
d0cea5f9 JF |
2398 | return OK; |
2399 | } | |
c34d9c9f | 2400 | |
d0cea5f9 JF |
2401 | static int |
2402 | load_refs(void) | |
2403 | { | |
2404 | const char *cmd_env = getenv("TIG_LS_REMOTE"); | |
2405 | const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE; | |
c34d9c9f | 2406 | |
4a63c884 | 2407 | return read_properties(popen(cmd, "r"), "\t", read_ref); |
d0cea5f9 | 2408 | } |
c34d9c9f | 2409 | |
d0cea5f9 | 2410 | static int |
14c778a6 | 2411 | read_repo_config_option(char *name, int namelen, char *value, int valuelen) |
d0cea5f9 JF |
2412 | { |
2413 | if (!strcmp(name, "i18n.commitencoding")) { | |
2414 | string_copy(opt_encoding, value); | |
c34d9c9f JF |
2415 | } |
2416 | ||
c34d9c9f JF |
2417 | return OK; |
2418 | } | |
2419 | ||
4670cf89 | 2420 | static int |
14c778a6 | 2421 | load_repo_config(void) |
4670cf89 | 2422 | { |
66749723 | 2423 | return read_properties(popen("git repo-config --list", "r"), |
14c778a6 | 2424 | "=", read_repo_config_option); |
d0cea5f9 JF |
2425 | } |
2426 | ||
2427 | static int | |
4a63c884 | 2428 | read_properties(FILE *pipe, const char *separators, |
d0cea5f9 JF |
2429 | int (*read_property)(char *, int, char *, int)) |
2430 | { | |
4670cf89 JF |
2431 | char buffer[BUFSIZ]; |
2432 | char *name; | |
d0cea5f9 | 2433 | int state = OK; |
4670cf89 JF |
2434 | |
2435 | if (!pipe) | |
2436 | return ERR; | |
2437 | ||
d0cea5f9 | 2438 | while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) { |
4a63c884 JF |
2439 | char *value; |
2440 | size_t namelen; | |
2441 | size_t valuelen; | |
4670cf89 | 2442 | |
4a63c884 JF |
2443 | name = chomp_string(name); |
2444 | namelen = strcspn(name, separators); | |
2445 | ||
2446 | if (name[namelen]) { | |
2447 | name[namelen] = 0; | |
2448 | value = chomp_string(name + namelen + 1); | |
d0cea5f9 | 2449 | valuelen = strlen(value); |
4670cf89 | 2450 | |
d0cea5f9 | 2451 | } else { |
d0cea5f9 JF |
2452 | value = ""; |
2453 | valuelen = 0; | |
4670cf89 | 2454 | } |
d0cea5f9 | 2455 | |
9d82d824 JF |
2456 | if (namelen) |
2457 | state = read_property(name, namelen, value, valuelen); | |
4670cf89 JF |
2458 | } |
2459 | ||
d0cea5f9 JF |
2460 | if (state != ERR && ferror(pipe)) |
2461 | state = ERR; | |
4670cf89 JF |
2462 | |
2463 | pclose(pipe); | |
2464 | ||
d0cea5f9 | 2465 | return state; |
4670cf89 JF |
2466 | } |
2467 | ||
d0cea5f9 | 2468 | |
6b161b31 JF |
2469 | /* |
2470 | * Main | |
2471 | */ | |
2472 | ||
b5c9e67f TH |
2473 | #if __GNUC__ >= 3 |
2474 | #define __NORETURN __attribute__((__noreturn__)) | |
2475 | #else | |
2476 | #define __NORETURN | |
2477 | #endif | |
2478 | ||
2479 | static void __NORETURN | |
6b161b31 JF |
2480 | quit(int sig) |
2481 | { | |
8855ada4 JF |
2482 | /* XXX: Restore tty modes and let the OS cleanup the rest! */ |
2483 | if (cursed) | |
2484 | endwin(); | |
6b161b31 JF |
2485 | exit(0); |
2486 | } | |
2487 | ||
c6704a4e JF |
2488 | static void __NORETURN |
2489 | die(const char *err, ...) | |
6b161b31 JF |
2490 | { |
2491 | va_list args; | |
2492 | ||
2493 | endwin(); | |
2494 | ||
2495 | va_start(args, err); | |
2496 | fputs("tig: ", stderr); | |
2497 | vfprintf(stderr, err, args); | |
2498 | fputs("\n", stderr); | |
2499 | va_end(args); | |
2500 | ||
2501 | exit(1); | |
2502 | } | |
2503 | ||
2504 | int | |
2505 | main(int argc, char *argv[]) | |
2506 | { | |
1ba2ae4b | 2507 | struct view *view; |
6b161b31 | 2508 | enum request request; |
1ba2ae4b | 2509 | size_t i; |
6b161b31 JF |
2510 | |
2511 | signal(SIGINT, quit); | |
2512 | ||
afdc35b3 JF |
2513 | /* Load the repo config file first so options can be overwritten from |
2514 | * the command line. */ | |
14c778a6 | 2515 | if (load_repo_config() == ERR) |
afdc35b3 JF |
2516 | die("Failed to load repo config."); |
2517 | ||
8855ada4 | 2518 | if (!parse_options(argc, argv)) |
6b161b31 JF |
2519 | return 0; |
2520 | ||
c34d9c9f JF |
2521 | if (load_refs() == ERR) |
2522 | die("Failed to load refs."); | |
2523 | ||
7bb55251 JF |
2524 | /* Require a git repository unless when running in pager mode. */ |
2525 | if (refs_size == 0 && opt_request != REQ_VIEW_PAGER) | |
2526 | die("Not a git repository"); | |
2527 | ||
1ba2ae4b JF |
2528 | for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++) |
2529 | view->cmd_env = getenv(view->cmd_env); | |
2530 | ||
6b161b31 JF |
2531 | request = opt_request; |
2532 | ||
2533 | init_display(); | |
b801d8b2 JF |
2534 | |
2535 | while (view_driver(display[current_view], request)) { | |
6b161b31 | 2536 | int key; |
b801d8b2 JF |
2537 | int i; |
2538 | ||
6b161b31 JF |
2539 | foreach_view (view, i) |
2540 | update_view(view); | |
b801d8b2 JF |
2541 | |
2542 | /* Refresh, accept single keystroke of input */ | |
6b161b31 JF |
2543 | key = wgetch(status_win); |
2544 | request = get_request(key); | |
03a93dbb | 2545 | |
6706b2ba | 2546 | /* Some low-level request handling. This keeps access to |
fac7db6c JF |
2547 | * status_win restricted. */ |
2548 | switch (request) { | |
2549 | case REQ_PROMPT: | |
6908bdbd JF |
2550 | report(":"); |
2551 | /* Temporarily switch to line-oriented and echoed | |
2552 | * input. */ | |
03a93dbb JF |
2553 | nocbreak(); |
2554 | echo(); | |
49f2b43f JF |
2555 | |
2556 | if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) { | |
2557 | memcpy(opt_cmd, "git ", 4); | |
2558 | opt_request = REQ_VIEW_PAGER; | |
2559 | } else { | |
6a7bb912 JF |
2560 | report("Prompt interrupted by loading view, " |
2561 | "press 'z' to stop loading views"); | |
2562 | request = REQ_SCREEN_UPDATE; | |
49f2b43f JF |
2563 | } |
2564 | ||
6908bdbd JF |
2565 | noecho(); |
2566 | cbreak(); | |
fac7db6c JF |
2567 | break; |
2568 | ||
2569 | case REQ_SCREEN_RESIZE: | |
2570 | { | |
2571 | int height, width; | |
2572 | ||
2573 | getmaxyx(stdscr, height, width); | |
2574 | ||
2575 | /* Resize the status view and let the view driver take | |
2576 | * care of resizing the displayed views. */ | |
2577 | wresize(status_win, 1, width); | |
2578 | mvwin(status_win, height - 1, 0); | |
2579 | wrefresh(status_win); | |
2580 | break; | |
2581 | } | |
2582 | default: | |
2583 | break; | |
03a93dbb | 2584 | } |
b801d8b2 JF |
2585 | } |
2586 | ||
2587 | quit(0); | |
2588 | ||
2589 | return 0; | |
2590 | } | |
2591 | ||
2592 | /** | |
0721c53a | 2593 | * [[refspec]] |
3a11b38f JF |
2594 | * Revision specification |
2595 | * ---------------------- | |
0721c53a | 2596 | * This section describes various ways to specify what revisions to display |
3a11b38f JF |
2597 | * or otherwise limit the view to. tig(1) does not itself parse the described |
2598 | * revision options so refer to the relevant git man pages for futher | |
2599 | * information. Relevant man pages besides git-log(1) are git-diff(1) and | |
2600 | * git-rev-list(1). | |
468876c9 | 2601 | * |
3a11b38f JF |
2602 | * You can tune the interaction with git by making use of the options |
2603 | * explained in this section. For example, by configuring the environment | |
55565c51 JF |
2604 | * variables described in the <<history-commands, "History commands">> |
2605 | * section. | |
3a11b38f JF |
2606 | * |
2607 | * Limit by path name | |
2608 | * ~~~~~~~~~~~~~~~~~~ | |
ab46037d JF |
2609 | * If you are interested only in those revisions that made changes to a |
2610 | * specific file (or even several files) list the files like this: | |
2611 | * | |
c760e6ba | 2612 | * $ tig log Makefile README |
ab46037d JF |
2613 | * |
2614 | * To avoid ambiguity with repository references such as tag name, be sure | |
2615 | * to separate file names from other git options using "\--". So if you | |
2616 | * have a file named 'master' it will clash with the reference named | |
2617 | * 'master', and thus you will have to use: | |
2618 | * | |
1b4b0bd9 | 2619 | * $ tig log -- master |
ab46037d JF |
2620 | * |
2621 | * NOTE: For the main view, avoiding ambiguity will in some cases require | |
2622 | * you to specify two "\--" options. The first will make tig(1) stop | |
2623 | * option processing and the latter will be passed to git log. | |
2624 | * | |
468876c9 JF |
2625 | * Limit by date or number |
2626 | * ~~~~~~~~~~~~~~~~~~~~~~~ | |
2627 | * To speed up interaction with git, you can limit the amount of commits | |
2628 | * to show both for the log and main view. Either limit by date using | |
2629 | * e.g. `--since=1.month` or limit by the number of commits using `-n400`. | |
2630 | * | |
3a11b38f JF |
2631 | * If you are only interested in changed that happened between two dates |
2632 | * you can use: | |
2633 | * | |
c760e6ba | 2634 | * $ tig -- --after="May 5th" --before="2006-05-16 15:44" |
468876c9 | 2635 | * |
c760e6ba JF |
2636 | * NOTE: If you want to avoid having to quote dates containing spaces you |
2637 | * can use "." instead, e.g. `--after=May.5th`. | |
3a11b38f JF |
2638 | * |
2639 | * Limiting by commit ranges | |
2640 | * ~~~~~~~~~~~~~~~~~~~~~~~~~ | |
468876c9 JF |
2641 | * Alternatively, commits can be limited to a specific range, such as |
2642 | * "all commits between 'tag-1.0' and 'tag-2.0'". For example: | |
2643 | * | |
2644 | * $ tig log tag-1.0..tag-2.0 | |
2645 | * | |
2646 | * This way of commit limiting makes it trivial to only browse the commits | |
2647 | * which haven't been pushed to a remote branch. Assuming 'origin' is your | |
2648 | * upstream remote branch, using: | |
2649 | * | |
2650 | * $ tig log origin..HEAD | |
2651 | * | |
2652 | * will list what will be pushed to the remote branch. Optionally, the ending | |
2653 | * 'HEAD' can be left out since it is implied. | |
2654 | * | |
2655 | * Limiting by reachability | |
2656 | * ~~~~~~~~~~~~~~~~~~~~~~~~ | |
2657 | * Git interprets the range specifier "tag-1.0..tag-2.0" as | |
2658 | * "all commits reachable from 'tag-2.0' but not from 'tag-1.0'". | |
3a11b38f JF |
2659 | * Where reachability refers to what commits are ancestors (or part of the |
2660 | * history) of the branch or tagged revision in question. | |
2661 | * | |
468876c9 JF |
2662 | * If you prefer to specify which commit to preview in this way use the |
2663 | * following: | |
2664 | * | |
2665 | * $ tig log tag-2.0 ^tag-1.0 | |
2666 | * | |
57bdf034 JF |
2667 | * You can think of '^' as a negation operator. Using this alternate syntax, |
2668 | * it is possible to further prune commits by specifying multiple branch | |
2669 | * cut offs. | |
468876c9 | 2670 | * |
3a11b38f JF |
2671 | * Combining revisions specification |
2672 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
2673 | * Revisions options can to some degree be combined, which makes it possible | |
2674 | * to say "show at most 20 commits from within the last month that changed | |
2675 | * files under the Documentation/ directory." | |
2676 | * | |
2677 | * $ tig -- --since=1.month -n20 -- Documentation/ | |
2678 | * | |
2679 | * Examining all repository references | |
2680 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
2681 | * In some cases, it can be useful to query changes across all references | |
2682 | * in a repository. An example is to ask "did any line of development in | |
2683 | * this repository change a particular file within the last week". This | |
2684 | * can be accomplished using: | |
2685 | * | |
2686 | * $ tig -- --all --since=1.week -- Makefile | |
2687 | * | |
6706b2ba JF |
2688 | * BUGS |
2689 | * ---- | |
2690 | * Known bugs and problems: | |
2691 | * | |
10e290ee JF |
2692 | * - In it's current state tig is pretty much UTF-8 only. |
2693 | * | |
6706b2ba | 2694 | * - If the screen width is very small the main view can draw |
468876c9 JF |
2695 | * outside the current view causing bad wrapping. Same goes |
2696 | * for title and status windows. | |
6706b2ba | 2697 | * |
c19f8017 JF |
2698 | * - The cursor can wrap-around on the last line and cause the |
2699 | * window to scroll. | |
2700 | * | |
6a7bb912 JF |
2701 | * - The prompt doesn't work while loading. |
2702 | * | |
4c6fabc2 JF |
2703 | * TODO |
2704 | * ---- | |
2705 | * Features that should be explored. | |
2706 | * | |
fac7db6c | 2707 | * - Searching. |
4c6fabc2 JF |
2708 | * |
2709 | * - Locale support. | |
2710 | * | |
b801d8b2 JF |
2711 | * COPYRIGHT |
2712 | * --------- | |
192d9a60 | 2713 | * Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk> |
b801d8b2 JF |
2714 | * |
2715 | * This program is free software; you can redistribute it and/or modify | |
2716 | * it under the terms of the GNU General Public License as published by | |
2717 | * the Free Software Foundation; either version 2 of the License, or | |
2718 | * (at your option) any later version. | |
2719 | * | |
2720 | * SEE ALSO | |
2721 | * -------- | |
f84f9d28 JF |
2722 | * - link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)], |
2723 | * - link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)] | |
2724 | * | |
2725 | * Other git repository browsers: | |
5cfbde75 | 2726 | * |
f84f9d28 JF |
2727 | * - gitk(1) |
2728 | * - qgit(1) | |
2729 | * - gitview(1) | |
b801d8b2 | 2730 | **/ |