Commit | Line | Data |
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4a2909a7 JF |
1 | /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk> |
2 | * See license info at the bottom. */ | |
b801d8b2 JF |
3 | /** |
4 | * TIG(1) | |
5 | * ====== | |
6 | * | |
7 | * NAME | |
8 | * ---- | |
9 | * tig - text-mode interface for git | |
10 | * | |
11 | * SYNOPSIS | |
12 | * -------- | |
13 | * [verse] | |
03a93dbb JF |
14 | * tig [options] |
15 | * tig [options] [--] [git log options] | |
b76c2afc JF |
16 | * tig [options] log [git log options] |
17 | * tig [options] diff [git diff options] | |
8855ada4 JF |
18 | * tig [options] show [git show options] |
19 | * tig [options] < [git command output] | |
b801d8b2 JF |
20 | * |
21 | * DESCRIPTION | |
22 | * ----------- | |
6706b2ba JF |
23 | * Browse changes in a git repository. Additionally, tig(1) can also act |
24 | * as a pager for output of various git commands. | |
25 | * | |
57bdf034 | 26 | * When browsing repositories, tig(1) uses the underlying git commands |
468876c9 JF |
27 | * to present the user with various views, such as summarized commit log |
28 | * and showing the commit with the log message, diffstat, and the diff. | |
6706b2ba | 29 | * |
468876c9 JF |
30 | * Using tig(1) as a pager, it will display input from stdin and try |
31 | * to colorize it. | |
b801d8b2 JF |
32 | **/ |
33 | ||
b76c2afc | 34 | #ifndef VERSION |
8c11094f | 35 | #define VERSION "tig-0.3" |
b76c2afc JF |
36 | #endif |
37 | ||
8855ada4 JF |
38 | #ifndef DEBUG |
39 | #define NDEBUG | |
40 | #endif | |
41 | ||
22f66b0a | 42 | #include <assert.h> |
4c6fabc2 | 43 | #include <errno.h> |
22f66b0a JF |
44 | #include <ctype.h> |
45 | #include <signal.h> | |
b801d8b2 | 46 | #include <stdarg.h> |
b801d8b2 | 47 | #include <stdio.h> |
22f66b0a | 48 | #include <stdlib.h> |
b801d8b2 | 49 | #include <string.h> |
6908bdbd | 50 | #include <unistd.h> |
b76c2afc | 51 | #include <time.h> |
b801d8b2 JF |
52 | |
53 | #include <curses.h> | |
b801d8b2 JF |
54 | |
55 | static void die(const char *err, ...); | |
56 | static void report(const char *msg, ...); | |
1ba2ae4b | 57 | static void set_nonblocking_input(bool loading); |
10e290ee | 58 | static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed); |
6b161b31 JF |
59 | |
60 | #define ABS(x) ((x) >= 0 ? (x) : -(x)) | |
61 | #define MIN(x, y) ((x) < (y) ? (x) : (y)) | |
62 | ||
63 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) | |
64 | #define STRING_SIZE(x) (sizeof(x) - 1) | |
b76c2afc | 65 | |
2e8488b4 JF |
66 | #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */ |
67 | #define SIZEOF_CMD 1024 /* Size of command buffer. */ | |
b801d8b2 | 68 | |
82e78006 JF |
69 | /* This color name can be used to refer to the default term colors. */ |
70 | #define COLOR_DEFAULT (-1) | |
78c70acd | 71 | |
67e48ac5 | 72 | #define TIG_HELP "(d)iff, (l)og, (m)ain, (q)uit, (h)elp" |
468876c9 | 73 | |
82e78006 | 74 | /* The format and size of the date column in the main view. */ |
4c6fabc2 | 75 | #define DATE_FORMAT "%Y-%m-%d %H:%M" |
6b161b31 | 76 | #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ") |
4c6fabc2 | 77 | |
10e290ee JF |
78 | #define AUTHOR_COLS 20 |
79 | ||
a28bcc22 | 80 | /* The default interval between line numbers. */ |
4a2909a7 | 81 | #define NUMBER_INTERVAL 1 |
82e78006 | 82 | |
6706b2ba JF |
83 | #define TABSIZE 8 |
84 | ||
a28bcc22 JF |
85 | #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3) |
86 | ||
8855ada4 | 87 | /* Some ascii-shorthands fitted into the ncurses namespace. */ |
a28bcc22 JF |
88 | #define KEY_TAB '\t' |
89 | #define KEY_RETURN '\r' | |
4a2909a7 JF |
90 | #define KEY_ESC 27 |
91 | ||
6706b2ba | 92 | |
a28bcc22 | 93 | /* User action requests. */ |
4a2909a7 | 94 | enum request { |
a28bcc22 JF |
95 | /* Offset all requests to avoid conflicts with ncurses getch values. */ |
96 | REQ_OFFSET = KEY_MAX + 1, | |
97 | ||
4a2909a7 | 98 | /* XXX: Keep the view request first and in sync with views[]. */ |
2e8488b4 | 99 | REQ_VIEW_MAIN, |
4a2909a7 JF |
100 | REQ_VIEW_DIFF, |
101 | REQ_VIEW_LOG, | |
2e8488b4 | 102 | REQ_VIEW_HELP, |
6908bdbd | 103 | REQ_VIEW_PAGER, |
4a2909a7 | 104 | |
6b161b31 | 105 | REQ_ENTER, |
03a93dbb JF |
106 | REQ_QUIT, |
107 | REQ_PROMPT, | |
4a2909a7 | 108 | REQ_SCREEN_REDRAW, |
fac7db6c | 109 | REQ_SCREEN_RESIZE, |
4a2909a7 | 110 | REQ_SCREEN_UPDATE, |
03a93dbb JF |
111 | REQ_SHOW_VERSION, |
112 | REQ_STOP_LOADING, | |
4a2909a7 | 113 | REQ_TOGGLE_LINE_NUMBERS, |
03a93dbb | 114 | REQ_VIEW_NEXT, |
4f9b667a | 115 | REQ_VIEW_CLOSE, |
4a2909a7 JF |
116 | |
117 | REQ_MOVE_UP, | |
6706b2ba | 118 | REQ_MOVE_UP_ENTER, |
4a2909a7 | 119 | REQ_MOVE_DOWN, |
6706b2ba | 120 | REQ_MOVE_DOWN_ENTER, |
4a2909a7 JF |
121 | REQ_MOVE_PAGE_UP, |
122 | REQ_MOVE_PAGE_DOWN, | |
123 | REQ_MOVE_FIRST_LINE, | |
124 | REQ_MOVE_LAST_LINE, | |
125 | ||
126 | REQ_SCROLL_LINE_UP, | |
127 | REQ_SCROLL_LINE_DOWN, | |
128 | REQ_SCROLL_PAGE_UP, | |
129 | REQ_SCROLL_PAGE_DOWN, | |
130 | }; | |
131 | ||
c34d9c9f | 132 | struct ref { |
468876c9 JF |
133 | char *name; /* Ref name; tag or head names are shortened. */ |
134 | char id[41]; /* Commit SHA1 ID */ | |
135 | unsigned int tag:1; /* Is it a tag? */ | |
136 | unsigned int next:1; /* For ref lists: are there more refs? */ | |
c34d9c9f JF |
137 | }; |
138 | ||
4c6fabc2 | 139 | struct commit { |
a28bcc22 | 140 | char id[41]; /* SHA1 ID. */ |
6b161b31 | 141 | char title[75]; /* The first line of the commit message. */ |
a28bcc22 JF |
142 | char author[75]; /* The author of the commit. */ |
143 | struct tm time; /* Date from the author ident. */ | |
c34d9c9f | 144 | struct ref **refs; /* Repository references; tags & branch heads. */ |
4c6fabc2 JF |
145 | }; |
146 | ||
6706b2ba | 147 | |
03a93dbb JF |
148 | /* |
149 | * String helpers | |
150 | */ | |
78c70acd | 151 | |
82e78006 | 152 | static inline void |
4685845e | 153 | string_ncopy(char *dst, const char *src, int dstlen) |
82e78006 JF |
154 | { |
155 | strncpy(dst, src, dstlen - 1); | |
156 | dst[dstlen - 1] = 0; | |
03a93dbb | 157 | |
82e78006 JF |
158 | } |
159 | ||
160 | /* Shorthand for safely copying into a fixed buffer. */ | |
161 | #define string_copy(dst, src) \ | |
162 | string_ncopy(dst, src, sizeof(dst)) | |
163 | ||
6706b2ba | 164 | |
03a93dbb JF |
165 | /* Shell quoting |
166 | * | |
167 | * NOTE: The following is a slightly modified copy of the git project's shell | |
168 | * quoting routines found in the quote.c file. | |
169 | * | |
170 | * Help to copy the thing properly quoted for the shell safety. any single | |
171 | * quote is replaced with '\'', any exclamation point is replaced with '\!', | |
172 | * and the whole thing is enclosed in a | |
173 | * | |
174 | * E.g. | |
175 | * original sq_quote result | |
176 | * name ==> name ==> 'name' | |
177 | * a b ==> a b ==> 'a b' | |
178 | * a'b ==> a'\''b ==> 'a'\''b' | |
179 | * a!b ==> a'\!'b ==> 'a'\!'b' | |
180 | */ | |
181 | ||
182 | static size_t | |
183 | sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src) | |
184 | { | |
185 | char c; | |
186 | ||
a9274b95 | 187 | #define BUFPUT(x) do { if (bufsize < SIZEOF_CMD) buf[bufsize++] = (x); } while (0) |
03a93dbb JF |
188 | |
189 | BUFPUT('\''); | |
190 | while ((c = *src++)) { | |
191 | if (c == '\'' || c == '!') { | |
192 | BUFPUT('\''); | |
193 | BUFPUT('\\'); | |
194 | BUFPUT(c); | |
195 | BUFPUT('\''); | |
196 | } else { | |
197 | BUFPUT(c); | |
198 | } | |
199 | } | |
200 | BUFPUT('\''); | |
201 | ||
202 | return bufsize; | |
203 | } | |
204 | ||
82e78006 | 205 | |
b76c2afc JF |
206 | /** |
207 | * OPTIONS | |
208 | * ------- | |
209 | **/ | |
210 | ||
4b8c01a3 JF |
211 | static const char usage[] = |
212 | VERSION " (" __DATE__ ")\n" | |
213 | "\n" | |
214 | "Usage: tig [options]\n" | |
215 | " or: tig [options] [--] [git log options]\n" | |
216 | " or: tig [options] log [git log options]\n" | |
217 | " or: tig [options] diff [git diff options]\n" | |
218 | " or: tig [options] show [git show options]\n" | |
219 | " or: tig [options] < [git command output]\n" | |
220 | "\n" | |
221 | "Options:\n" | |
222 | " -l Start up in log view\n" | |
223 | " -d Start up in diff view\n" | |
224 | " -n[I], --line-number[=I] Show line numbers with given interval\n" | |
225 | " -t[N], --tab-size[=N] Set number of spaces for tab expansion\n" | |
226 | " -- Mark end of tig options\n" | |
227 | " -v, --version Show version and exit\n" | |
228 | " -h, --help Show help message and exit\n"; | |
229 | ||
6706b2ba JF |
230 | /* Option and state variables. */ |
231 | static bool opt_line_number = FALSE; | |
2e8488b4 | 232 | static int opt_num_interval = NUMBER_INTERVAL; |
6706b2ba | 233 | static int opt_tab_size = TABSIZE; |
6b161b31 | 234 | static enum request opt_request = REQ_VIEW_MAIN; |
03a93dbb | 235 | static char opt_cmd[SIZEOF_CMD] = ""; |
6908bdbd | 236 | static FILE *opt_pipe = NULL; |
b76c2afc | 237 | |
b76c2afc | 238 | /* Returns the index of log or diff command or -1 to exit. */ |
8855ada4 | 239 | static bool |
b76c2afc JF |
240 | parse_options(int argc, char *argv[]) |
241 | { | |
242 | int i; | |
243 | ||
244 | for (i = 1; i < argc; i++) { | |
245 | char *opt = argv[i]; | |
246 | ||
247 | /** | |
b76c2afc | 248 | * -l:: |
1ba2ae4b | 249 | * Start up in log view using the internal log command. |
b76c2afc | 250 | **/ |
6b161b31 | 251 | if (!strcmp(opt, "-l")) { |
4a2909a7 | 252 | opt_request = REQ_VIEW_LOG; |
6b161b31 JF |
253 | continue; |
254 | } | |
b76c2afc JF |
255 | |
256 | /** | |
257 | * -d:: | |
1ba2ae4b | 258 | * Start up in diff view using the internal diff command. |
b76c2afc | 259 | **/ |
6b161b31 | 260 | if (!strcmp(opt, "-d")) { |
4a2909a7 | 261 | opt_request = REQ_VIEW_DIFF; |
6b161b31 JF |
262 | continue; |
263 | } | |
b76c2afc JF |
264 | |
265 | /** | |
2e8488b4 | 266 | * -n[INTERVAL], --line-number[=INTERVAL]:: |
b76c2afc | 267 | * Prefix line numbers in log and diff view. |
2e8488b4 | 268 | * Optionally, with interval different than each line. |
b76c2afc | 269 | **/ |
6b161b31 | 270 | if (!strncmp(opt, "-n", 2) || |
8855ada4 | 271 | !strncmp(opt, "--line-number", 13)) { |
2e8488b4 JF |
272 | char *num = opt; |
273 | ||
274 | if (opt[1] == 'n') { | |
275 | num = opt + 2; | |
276 | ||
277 | } else if (opt[STRING_SIZE("--line-number")] == '=') { | |
278 | num = opt + STRING_SIZE("--line-number="); | |
279 | } | |
280 | ||
281 | if (isdigit(*num)) | |
282 | opt_num_interval = atoi(num); | |
283 | ||
6b161b31 JF |
284 | opt_line_number = TRUE; |
285 | continue; | |
286 | } | |
b76c2afc JF |
287 | |
288 | /** | |
6706b2ba JF |
289 | * -t[NSPACES], --tab-size[=NSPACES]:: |
290 | * Set the number of spaces tabs should be expanded to. | |
291 | **/ | |
292 | if (!strncmp(opt, "-t", 2) || | |
293 | !strncmp(opt, "--tab-size", 10)) { | |
294 | char *num = opt; | |
295 | ||
296 | if (opt[1] == 't') { | |
297 | num = opt + 2; | |
298 | ||
299 | } else if (opt[STRING_SIZE("--tab-size")] == '=') { | |
300 | num = opt + STRING_SIZE("--tab-size="); | |
301 | } | |
302 | ||
303 | if (isdigit(*num)) | |
304 | opt_tab_size = MIN(atoi(num), TABSIZE); | |
305 | continue; | |
306 | } | |
307 | ||
308 | /** | |
b76c2afc JF |
309 | * -v, --version:: |
310 | * Show version and exit. | |
311 | **/ | |
6b161b31 | 312 | if (!strcmp(opt, "-v") || |
8855ada4 | 313 | !strcmp(opt, "--version")) { |
b76c2afc | 314 | printf("tig version %s\n", VERSION); |
8855ada4 | 315 | return FALSE; |
6b161b31 | 316 | } |
b76c2afc JF |
317 | |
318 | /** | |
4b8c01a3 JF |
319 | * -h, --help:: |
320 | * Show help message and exit. | |
321 | **/ | |
322 | if (!strcmp(opt, "-h") || | |
323 | !strcmp(opt, "--help")) { | |
324 | printf(usage); | |
325 | return FALSE; | |
326 | } | |
327 | ||
328 | /** | |
03a93dbb | 329 | * \--:: |
0721c53a | 330 | * End of tig(1) options. Useful when specifying command |
d44f34bf | 331 | * options for the main view. Example: |
03a93dbb | 332 | * |
889cb462 | 333 | * $ tig -- --since=1.month |
b76c2afc | 334 | **/ |
6908bdbd JF |
335 | if (!strcmp(opt, "--")) { |
336 | i++; | |
337 | break; | |
338 | } | |
03a93dbb | 339 | |
8855ada4 | 340 | /** |
d44f34bf | 341 | * log [git log options]:: |
8855ada4 JF |
342 | * Open log view using the given git log options. |
343 | * | |
d44f34bf | 344 | * diff [git diff options]:: |
8855ada4 JF |
345 | * Open diff view using the given git diff options. |
346 | * | |
d44f34bf | 347 | * show [git show options]:: |
8855ada4 JF |
348 | * Open diff view using the given git show options. |
349 | **/ | |
350 | if (!strcmp(opt, "log") || | |
351 | !strcmp(opt, "diff") || | |
352 | !strcmp(opt, "show")) { | |
353 | opt_request = opt[0] == 'l' | |
354 | ? REQ_VIEW_LOG : REQ_VIEW_DIFF; | |
355 | break; | |
356 | } | |
357 | ||
d44f34bf | 358 | /** |
57bdf034 | 359 | * [git log options]:: |
d44f34bf JF |
360 | * tig(1) will stop the option parsing when the first |
361 | * command line parameter not starting with "-" is | |
57bdf034 JF |
362 | * encountered. All options including this one will be |
363 | * passed to git log when loading the main view. | |
364 | * This makes it possible to say: | |
889cb462 | 365 | * |
03a93dbb | 366 | * $ tig tag-1.0..HEAD |
d44f34bf | 367 | **/ |
03a93dbb | 368 | if (opt[0] && opt[0] != '-') |
6908bdbd | 369 | break; |
6b161b31 JF |
370 | |
371 | die("unknown command '%s'", opt); | |
b76c2afc JF |
372 | } |
373 | ||
6908bdbd | 374 | if (!isatty(STDIN_FILENO)) { |
8855ada4 JF |
375 | /** |
376 | * Pager mode | |
377 | * ~~~~~~~~~~ | |
378 | * If stdin is a pipe, any log or diff options will be ignored and the | |
379 | * pager view will be opened loading data from stdin. The pager mode | |
380 | * can be used for colorizing output from various git commands. | |
381 | * | |
382 | * Example on how to colorize the output of git-show(1): | |
383 | * | |
384 | * $ git show | tig | |
385 | **/ | |
6908bdbd JF |
386 | opt_request = REQ_VIEW_PAGER; |
387 | opt_pipe = stdin; | |
388 | ||
389 | } else if (i < argc) { | |
390 | size_t buf_size; | |
391 | ||
8855ada4 JF |
392 | /** |
393 | * Git command options | |
394 | * ~~~~~~~~~~~~~~~~~~~ | |
8855ada4 JF |
395 | * All git command options specified on the command line will |
396 | * be passed to the given command and all will be shell quoted | |
468876c9 | 397 | * before they are passed to the shell. |
8855ada4 | 398 | * |
468876c9 JF |
399 | * NOTE: If you specify options for the main view, you should |
400 | * not use the `--pretty` option as this option will be set | |
401 | * automatically to the format expected by the main view. | |
8855ada4 JF |
402 | * |
403 | * Example on how to open the log view and show both author and | |
404 | * committer information: | |
405 | * | |
406 | * $ tig log --pretty=fuller | |
468876c9 | 407 | * |
0721c53a JF |
408 | * See the <<refspec, "Specifying revisions">> section below |
409 | * for an introduction to revision options supported by the git | |
410 | * commands. For details on specific git command options, refer | |
411 | * to the man page of the command in question. | |
8855ada4 JF |
412 | **/ |
413 | ||
6908bdbd | 414 | if (opt_request == REQ_VIEW_MAIN) |
8855ada4 JF |
415 | /* XXX: This is vulnerable to the user overriding |
416 | * options required for the main view parser. */ | |
6908bdbd JF |
417 | string_copy(opt_cmd, "git log --stat --pretty=raw"); |
418 | else | |
419 | string_copy(opt_cmd, "git"); | |
420 | buf_size = strlen(opt_cmd); | |
421 | ||
422 | while (buf_size < sizeof(opt_cmd) && i < argc) { | |
423 | opt_cmd[buf_size++] = ' '; | |
424 | buf_size = sq_quote(opt_cmd, buf_size, argv[i++]); | |
425 | } | |
426 | ||
427 | if (buf_size >= sizeof(opt_cmd)) | |
428 | die("command too long"); | |
429 | ||
430 | opt_cmd[buf_size] = 0; | |
431 | ||
432 | } | |
433 | ||
8855ada4 | 434 | return TRUE; |
b76c2afc JF |
435 | } |
436 | ||
437 | ||
438 | /* | |
439 | * Line-oriented content detection. | |
6b161b31 JF |
440 | */ |
441 | ||
2e8488b4 | 442 | #define LINE_INFO \ |
6b161b31 JF |
443 | /* Line type String to match Foreground Background Attributes |
444 | * --------- --------------- ---------- ---------- ---------- */ \ | |
a28bcc22 JF |
445 | /* Diff markup */ \ |
446 | LINE(DIFF, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
8855ada4 | 447 | LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
a28bcc22 JF |
448 | LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
449 | LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
450 | LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \ | |
3af8774e JF |
451 | LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
452 | LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
a28bcc22 JF |
453 | LINE(DIFF_COPY, "copy ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
454 | LINE(DIFF_RENAME, "rename ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
455 | LINE(DIFF_SIM, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
456 | LINE(DIFF_DISSIM, "dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
457 | /* Pretty print commit header */ \ | |
6908bdbd | 458 | LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
8855ada4 | 459 | LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
6908bdbd JF |
460 | LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
461 | LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
8855ada4 JF |
462 | LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
463 | LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
a28bcc22 JF |
464 | /* Raw commit header */ \ |
465 | LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
466 | LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
467 | LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
8855ada4 | 468 | LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
a28bcc22 JF |
469 | LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
470 | /* Misc */ \ | |
471 | LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
472 | LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
473 | /* UI colors */ \ | |
474 | LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \ | |
475 | LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \ | |
476 | LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
6b161b31 JF |
477 | LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \ |
478 | LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \ | |
a28bcc22 JF |
479 | LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
480 | LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
481 | LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \ | |
c34d9c9f JF |
482 | LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
483 | LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \ | |
484 | LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), | |
2e8488b4 | 485 | |
78c70acd | 486 | enum line_type { |
2e8488b4 JF |
487 | #define LINE(type, line, fg, bg, attr) \ |
488 | LINE_##type | |
489 | LINE_INFO | |
490 | #undef LINE | |
78c70acd JF |
491 | }; |
492 | ||
493 | struct line_info { | |
4685845e | 494 | const char *line; /* The start of line to match. */ |
2e8488b4 JF |
495 | int linelen; /* Size of string to match. */ |
496 | int fg, bg, attr; /* Color and text attributes for the lines. */ | |
78c70acd JF |
497 | }; |
498 | ||
2e8488b4 | 499 | static struct line_info line_info[] = { |
78c70acd | 500 | #define LINE(type, line, fg, bg, attr) \ |
a28bcc22 | 501 | { (line), STRING_SIZE(line), (fg), (bg), (attr) } |
2e8488b4 JF |
502 | LINE_INFO |
503 | #undef LINE | |
78c70acd JF |
504 | }; |
505 | ||
2e8488b4 JF |
506 | static enum line_type |
507 | get_line_type(char *line) | |
78c70acd JF |
508 | { |
509 | int linelen = strlen(line); | |
a28bcc22 | 510 | enum line_type type; |
78c70acd | 511 | |
a28bcc22 | 512 | for (type = 0; type < ARRAY_SIZE(line_info); type++) |
2e8488b4 | 513 | /* Case insensitive search matches Signed-off-by lines better. */ |
a28bcc22 JF |
514 | if (linelen >= line_info[type].linelen && |
515 | !strncasecmp(line_info[type].line, line, line_info[type].linelen)) | |
516 | return type; | |
78c70acd | 517 | |
2e8488b4 | 518 | return LINE_DEFAULT; |
78c70acd JF |
519 | } |
520 | ||
2e8488b4 | 521 | static inline int |
78c70acd JF |
522 | get_line_attr(enum line_type type) |
523 | { | |
2e8488b4 JF |
524 | assert(type < ARRAY_SIZE(line_info)); |
525 | return COLOR_PAIR(type) | line_info[type].attr; | |
78c70acd JF |
526 | } |
527 | ||
528 | static void | |
529 | init_colors(void) | |
530 | { | |
82e78006 JF |
531 | int default_bg = COLOR_BLACK; |
532 | int default_fg = COLOR_WHITE; | |
a28bcc22 | 533 | enum line_type type; |
78c70acd JF |
534 | |
535 | start_color(); | |
536 | ||
537 | if (use_default_colors() != ERR) { | |
82e78006 JF |
538 | default_bg = -1; |
539 | default_fg = -1; | |
78c70acd JF |
540 | } |
541 | ||
a28bcc22 JF |
542 | for (type = 0; type < ARRAY_SIZE(line_info); type++) { |
543 | struct line_info *info = &line_info[type]; | |
82e78006 JF |
544 | int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg; |
545 | int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg; | |
78c70acd | 546 | |
a28bcc22 | 547 | init_pair(type, fg, bg); |
78c70acd JF |
548 | } |
549 | } | |
550 | ||
551 | ||
1ba2ae4b JF |
552 | /** |
553 | * ENVIRONMENT VARIABLES | |
554 | * --------------------- | |
c34d9c9f JF |
555 | * Several options related to the interface with git can be configured |
556 | * via environment options. | |
557 | * | |
558 | * Repository references | |
559 | * ~~~~~~~~~~~~~~~~~~~~~ | |
560 | * Commits that are referenced by tags and branch heads will be marked | |
561 | * by the reference name surrounded by '[' and ']': | |
562 | * | |
468876c9 | 563 | * 2006-03-26 19:42 Petr Baudis | [cogito-0.17.1] Cogito 0.17.1 |
c34d9c9f JF |
564 | * |
565 | * If you want to filter out certain directories under `.git/refs/`, say | |
566 | * `tmp` you can do it by setting the following variable: | |
567 | * | |
6706b2ba | 568 | * $ TIG_LS_REMOTE="git ls-remote . | sed /\/tmp\//d" tig |
c34d9c9f JF |
569 | * |
570 | * Or set the variable permanently in your environment. | |
571 | * | |
572 | * TIG_LS_REMOTE:: | |
6706b2ba JF |
573 | * Set command for retrieving all repository references. The command |
574 | * should output data in the same format as git-ls-remote(1). | |
c34d9c9f JF |
575 | **/ |
576 | ||
577 | #define TIG_LS_REMOTE \ | |
1b4b0bd9 | 578 | "git ls-remote . 2>/dev/null" |
c34d9c9f JF |
579 | |
580 | /** | |
0721c53a | 581 | * [[view-commands]] |
c34d9c9f JF |
582 | * View commands |
583 | * ~~~~~~~~~~~~~ | |
1ba2ae4b | 584 | * It is possible to alter which commands are used for the different views. |
6706b2ba JF |
585 | * If for example you prefer commits in the main view to be sorted by date |
586 | * and only show 500 commits, use: | |
1ba2ae4b JF |
587 | * |
588 | * $ TIG_MAIN_CMD="git log --date-order -n500 --pretty=raw %s" tig | |
589 | * | |
590 | * Or set the variable permanently in your environment. | |
591 | * | |
592 | * Notice, how `%s` is used to specify the commit reference. There can | |
593 | * be a maximum of 5 `%s` ref specifications. | |
594 | * | |
595 | * TIG_DIFF_CMD:: | |
596 | * The command used for the diff view. By default, git show is used | |
597 | * as a backend. | |
598 | * | |
599 | * TIG_LOG_CMD:: | |
6706b2ba JF |
600 | * The command used for the log view. If you prefer to have both |
601 | * author and committer shown in the log view be sure to pass | |
602 | * `--pretty=fuller` to git log. | |
1ba2ae4b JF |
603 | * |
604 | * TIG_MAIN_CMD:: | |
605 | * The command used for the main view. Note, you must always specify | |
606 | * the option: `--pretty=raw` since the main view parser expects to | |
607 | * read that format. | |
608 | **/ | |
609 | ||
610 | #define TIG_DIFF_CMD \ | |
611 | "git show --patch-with-stat --find-copies-harder -B -C %s" | |
612 | ||
613 | #define TIG_LOG_CMD \ | |
614 | "git log --cc --stat -n100 %s" | |
615 | ||
616 | #define TIG_MAIN_CMD \ | |
617 | "git log --topo-order --stat --pretty=raw %s" | |
618 | ||
0721c53a | 619 | /* ... silently ignore that the following are also exported. */ |
1ba2ae4b JF |
620 | |
621 | #define TIG_HELP_CMD \ | |
1b4b0bd9 | 622 | "man tig 2>/dev/null" |
1ba2ae4b JF |
623 | |
624 | #define TIG_PAGER_CMD \ | |
625 | "" | |
626 | ||
c2124ccd | 627 | |
468876c9 JF |
628 | /** |
629 | * The viewer | |
630 | * ---------- | |
c2124ccd JF |
631 | * The display consists of a status window on the last line of the screen and |
632 | * one or more views. The default is to only show one view at the time but it | |
633 | * is possible to split both the main and log view to also show the commit | |
634 | * diff. | |
468876c9 | 635 | * |
c2124ccd JF |
636 | * If you are in the log view and press 'Enter' when the current line is a |
637 | * commit line, such as: | |
468876c9 | 638 | * |
c2124ccd | 639 | * commit 4d55caff4cc89335192f3e566004b4ceef572521 |
468876c9 | 640 | * |
c2124ccd JF |
641 | * You will split the view so that the log view is displayed in the top window |
642 | * and the diff view in the bottom window. You can switch between the two | |
643 | * views by pressing 'Tab'. To maximize the log view again, simply press 'l'. | |
644 | **/ | |
645 | ||
646 | struct view; | |
647 | ||
648 | /* The display array of active views and the index of the current view. */ | |
649 | static struct view *display[2]; | |
650 | static unsigned int current_view; | |
651 | ||
652 | #define foreach_view(view, i) \ | |
653 | for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++) | |
654 | ||
655 | ||
656 | /** | |
657 | * Current head and commit ID | |
658 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
659 | * The viewer keeps track of both what head and commit ID you are currently | |
660 | * viewing. The commit ID will follow the cursor line and change everytime time | |
661 | * you highlight a different commit. Whenever you reopen the diff view it | |
662 | * will be reloaded, if the commit ID changed. | |
468876c9 | 663 | * |
c2124ccd JF |
664 | * The head ID is used when opening the main and log view to indicate from |
665 | * what revision to show history. | |
468876c9 | 666 | **/ |
b801d8b2 | 667 | |
c2124ccd JF |
668 | static char ref_commit[SIZEOF_REF] = "HEAD"; |
669 | static char ref_head[SIZEOF_REF] = "HEAD"; | |
670 | ||
671 | ||
b801d8b2 | 672 | struct view { |
03a93dbb | 673 | const char *name; /* View name */ |
4685845e TH |
674 | const char *cmd_fmt; /* Default command line format */ |
675 | const char *cmd_env; /* Command line set via environment */ | |
676 | const char *id; /* Points to either of ref_{head,commit} */ | |
6b161b31 JF |
677 | |
678 | struct view_ops { | |
6734f6b9 JF |
679 | /* What type of content being displayed. Used in the |
680 | * title bar. */ | |
4685845e | 681 | const char *type; |
8855ada4 | 682 | /* Draw one line; @lineno must be < view->height. */ |
6b161b31 | 683 | bool (*draw)(struct view *view, unsigned int lineno); |
8855ada4 | 684 | /* Read one line; updates view->line. */ |
6b161b31 | 685 | bool (*read)(struct view *view, char *line); |
8855ada4 | 686 | /* Depending on view, change display based on current line. */ |
6b161b31 JF |
687 | bool (*enter)(struct view *view); |
688 | } *ops; | |
22f66b0a | 689 | |
03a93dbb | 690 | char cmd[SIZEOF_CMD]; /* Command buffer */ |
49f2b43f JF |
691 | char ref[SIZEOF_REF]; /* Hovered commit reference */ |
692 | char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */ | |
2e8488b4 | 693 | |
8855ada4 JF |
694 | int height, width; /* The width and height of the main window */ |
695 | WINDOW *win; /* The main window */ | |
696 | WINDOW *title; /* The title window living below the main window */ | |
b801d8b2 JF |
697 | |
698 | /* Navigation */ | |
699 | unsigned long offset; /* Offset of the window top */ | |
700 | unsigned long lineno; /* Current line number */ | |
701 | ||
f6da0b66 JF |
702 | /* If non-NULL, points to the view that opened this view. If this view |
703 | * is closed tig will switch back to the parent view. */ | |
704 | struct view *parent; | |
705 | ||
b801d8b2 JF |
706 | /* Buffering */ |
707 | unsigned long lines; /* Total number of lines */ | |
8855ada4 JF |
708 | void **line; /* Line index; each line contains user data */ |
709 | unsigned int digits; /* Number of digits in the lines member. */ | |
b801d8b2 JF |
710 | |
711 | /* Loading */ | |
712 | FILE *pipe; | |
2e8488b4 | 713 | time_t start_time; |
b801d8b2 JF |
714 | }; |
715 | ||
6b161b31 JF |
716 | static struct view_ops pager_ops; |
717 | static struct view_ops main_ops; | |
a28bcc22 | 718 | |
95d7ddcd JF |
719 | #define VIEW_STR(name, cmd, env, ref, ops) \ |
720 | { name, cmd, #env, ref, ops } | |
1ba2ae4b | 721 | |
95d7ddcd JF |
722 | #define VIEW_(id, name, ops, ref) \ |
723 | VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops) | |
1ba2ae4b | 724 | |
c2124ccd JF |
725 | /** |
726 | * Views | |
727 | * ~~~~~ | |
728 | * tig(1) presents various 'views' of a repository. Each view is based on output | |
729 | * from an external command, most often 'git log', 'git diff', or 'git show'. | |
730 | * | |
731 | * The main view:: | |
732 | * Is the default view, and it shows a one line summary of each commit | |
733 | * in the chosen list of revisions. The summary includes commit date, | |
734 | * author, and the first line of the log message. Additionally, any | |
735 | * repository references, such as tags, will be shown. | |
736 | * | |
737 | * The log view:: | |
738 | * Presents a more rich view of the revision log showing the whole log | |
739 | * message and the diffstat. | |
740 | * | |
741 | * The diff view:: | |
742 | * Shows either the diff of the current working tree, that is, what | |
743 | * has changed since the last commit, or the commit diff complete | |
744 | * with log message, diffstat and diff. | |
745 | * | |
746 | * The pager view:: | |
747 | * Is used for displaying both input from stdin and output from git | |
748 | * commands entered in the internal prompt. | |
749 | * | |
750 | * The help view:: | |
751 | * Displays the information from the tig(1) man page. For the help view | |
752 | * to work you need to have the tig(1) man page installed. | |
753 | **/ | |
754 | ||
b801d8b2 | 755 | static struct view views[] = { |
95d7ddcd JF |
756 | VIEW_(MAIN, "main", &main_ops, ref_head), |
757 | VIEW_(DIFF, "diff", &pager_ops, ref_commit), | |
758 | VIEW_(LOG, "log", &pager_ops, ref_head), | |
759 | VIEW_(HELP, "help", &pager_ops, "static"), | |
760 | VIEW_(PAGER, "pager", &pager_ops, "static"), | |
b801d8b2 JF |
761 | }; |
762 | ||
a28bcc22 JF |
763 | #define VIEW(req) (&views[(req) - REQ_OFFSET - 1]) |
764 | ||
4c6fabc2 | 765 | |
b801d8b2 | 766 | static void |
82e78006 | 767 | redraw_view_from(struct view *view, int lineno) |
b801d8b2 | 768 | { |
82e78006 | 769 | assert(0 <= lineno && lineno < view->height); |
b801d8b2 | 770 | |
82e78006 | 771 | for (; lineno < view->height; lineno++) { |
6b161b31 | 772 | if (!view->ops->draw(view, lineno)) |
fd85fef1 | 773 | break; |
b801d8b2 JF |
774 | } |
775 | ||
776 | redrawwin(view->win); | |
777 | wrefresh(view->win); | |
778 | } | |
779 | ||
b76c2afc | 780 | static void |
82e78006 JF |
781 | redraw_view(struct view *view) |
782 | { | |
783 | wclear(view->win); | |
784 | redraw_view_from(view, 0); | |
785 | } | |
786 | ||
c2124ccd JF |
787 | |
788 | /** | |
789 | * Title windows | |
790 | * ~~~~~~~~~~~~~ | |
791 | * Each view has a title window which shows the name of the view, current | |
792 | * commit ID if available, and where the view is positioned: | |
793 | * | |
794 | * [main] c622eefaa485995320bc743431bae0d497b1d875 - commit 1 of 61 (1%) | |
795 | * | |
796 | * By default, the title of the current view is highlighted using bold font. | |
797 | **/ | |
798 | ||
6b161b31 | 799 | static void |
81030ec8 JF |
800 | update_view_title(struct view *view) |
801 | { | |
802 | if (view == display[current_view]) | |
803 | wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS)); | |
804 | else | |
805 | wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR)); | |
806 | ||
807 | werase(view->title); | |
808 | wmove(view->title, 0, 0); | |
809 | ||
81030ec8 JF |
810 | if (*view->ref) |
811 | wprintw(view->title, "[%s] %s", view->name, view->ref); | |
812 | else | |
813 | wprintw(view->title, "[%s]", view->name); | |
814 | ||
815 | if (view->lines) { | |
816 | wprintw(view->title, " - %s %d of %d (%d%%)", | |
817 | view->ops->type, | |
818 | view->lineno + 1, | |
819 | view->lines, | |
820 | (view->lineno + 1) * 100 / view->lines); | |
821 | } | |
822 | ||
823 | wrefresh(view->title); | |
824 | } | |
825 | ||
826 | static void | |
6b161b31 | 827 | resize_display(void) |
b76c2afc | 828 | { |
03a93dbb | 829 | int offset, i; |
6b161b31 JF |
830 | struct view *base = display[0]; |
831 | struct view *view = display[1] ? display[1] : display[0]; | |
b76c2afc | 832 | |
6b161b31 | 833 | /* Setup window dimensions */ |
b76c2afc | 834 | |
03a93dbb | 835 | getmaxyx(stdscr, base->height, base->width); |
b76c2afc | 836 | |
6b161b31 | 837 | /* Make room for the status window. */ |
03a93dbb | 838 | base->height -= 1; |
6b161b31 JF |
839 | |
840 | if (view != base) { | |
03a93dbb JF |
841 | /* Horizontal split. */ |
842 | view->width = base->width; | |
6b161b31 JF |
843 | view->height = SCALE_SPLIT_VIEW(base->height); |
844 | base->height -= view->height; | |
845 | ||
846 | /* Make room for the title bar. */ | |
847 | view->height -= 1; | |
848 | } | |
849 | ||
850 | /* Make room for the title bar. */ | |
851 | base->height -= 1; | |
852 | ||
853 | offset = 0; | |
854 | ||
855 | foreach_view (view, i) { | |
4d55caff JF |
856 | /* Keep the height of all view->win windows one larger than is |
857 | * required so that the cursor can wrap-around on the last line | |
858 | * without scrolling the window. */ | |
b76c2afc | 859 | if (!view->win) { |
6706b2ba | 860 | view->win = newwin(view->height + 1, 0, offset, 0); |
6b161b31 JF |
861 | if (!view->win) |
862 | die("Failed to create %s view", view->name); | |
863 | ||
864 | scrollok(view->win, TRUE); | |
865 | ||
866 | view->title = newwin(1, 0, offset + view->height, 0); | |
867 | if (!view->title) | |
868 | die("Failed to create title window"); | |
869 | ||
870 | } else { | |
6706b2ba | 871 | wresize(view->win, view->height + 1, view->width); |
6b161b31 JF |
872 | mvwin(view->win, offset, 0); |
873 | mvwin(view->title, offset + view->height, 0); | |
874 | wrefresh(view->win); | |
a28bcc22 | 875 | } |
a28bcc22 | 876 | |
6b161b31 | 877 | offset += view->height + 1; |
b76c2afc | 878 | } |
6b161b31 | 879 | } |
b76c2afc | 880 | |
6b161b31 | 881 | static void |
20bb5e18 JF |
882 | redraw_display(void) |
883 | { | |
884 | struct view *view; | |
885 | int i; | |
886 | ||
887 | foreach_view (view, i) { | |
888 | redraw_view(view); | |
889 | update_view_title(view); | |
890 | } | |
891 | } | |
892 | ||
893 | ||
2e8488b4 JF |
894 | /* |
895 | * Navigation | |
896 | */ | |
897 | ||
4a2909a7 | 898 | /* Scrolling backend */ |
b801d8b2 | 899 | static void |
4a2909a7 | 900 | do_scroll_view(struct view *view, int lines) |
b801d8b2 | 901 | { |
fd85fef1 JF |
902 | /* The rendering expects the new offset. */ |
903 | view->offset += lines; | |
904 | ||
905 | assert(0 <= view->offset && view->offset < view->lines); | |
906 | assert(lines); | |
b801d8b2 | 907 | |
82e78006 | 908 | /* Redraw the whole screen if scrolling is pointless. */ |
4c6fabc2 | 909 | if (view->height < ABS(lines)) { |
b76c2afc JF |
910 | redraw_view(view); |
911 | ||
912 | } else { | |
22f66b0a | 913 | int line = lines > 0 ? view->height - lines : 0; |
82e78006 | 914 | int end = line + ABS(lines); |
fd85fef1 JF |
915 | |
916 | wscrl(view->win, lines); | |
917 | ||
22f66b0a | 918 | for (; line < end; line++) { |
6b161b31 | 919 | if (!view->ops->draw(view, line)) |
fd85fef1 JF |
920 | break; |
921 | } | |
922 | } | |
923 | ||
924 | /* Move current line into the view. */ | |
925 | if (view->lineno < view->offset) { | |
926 | view->lineno = view->offset; | |
6b161b31 | 927 | view->ops->draw(view, 0); |
fd85fef1 JF |
928 | |
929 | } else if (view->lineno >= view->offset + view->height) { | |
6706b2ba JF |
930 | if (view->lineno == view->offset + view->height) { |
931 | /* Clear the hidden line so it doesn't show if the view | |
932 | * is scrolled up. */ | |
933 | wmove(view->win, view->height, 0); | |
934 | wclrtoeol(view->win); | |
935 | } | |
fd85fef1 | 936 | view->lineno = view->offset + view->height - 1; |
6b161b31 | 937 | view->ops->draw(view, view->lineno - view->offset); |
fd85fef1 JF |
938 | } |
939 | ||
4c6fabc2 | 940 | assert(view->offset <= view->lineno && view->lineno < view->lines); |
fd85fef1 JF |
941 | |
942 | redrawwin(view->win); | |
943 | wrefresh(view->win); | |
9d3f5834 | 944 | report(""); |
fd85fef1 | 945 | } |
78c70acd | 946 | |
4a2909a7 | 947 | /* Scroll frontend */ |
fd85fef1 | 948 | static void |
6b161b31 | 949 | scroll_view(struct view *view, enum request request) |
fd85fef1 JF |
950 | { |
951 | int lines = 1; | |
b801d8b2 JF |
952 | |
953 | switch (request) { | |
4a2909a7 | 954 | case REQ_SCROLL_PAGE_DOWN: |
fd85fef1 | 955 | lines = view->height; |
4a2909a7 | 956 | case REQ_SCROLL_LINE_DOWN: |
b801d8b2 | 957 | if (view->offset + lines > view->lines) |
bde3653a | 958 | lines = view->lines - view->offset; |
b801d8b2 | 959 | |
fd85fef1 | 960 | if (lines == 0 || view->offset + view->height >= view->lines) { |
eb98559e | 961 | report("Cannot scroll beyond the last line"); |
b801d8b2 JF |
962 | return; |
963 | } | |
964 | break; | |
965 | ||
4a2909a7 | 966 | case REQ_SCROLL_PAGE_UP: |
fd85fef1 | 967 | lines = view->height; |
4a2909a7 | 968 | case REQ_SCROLL_LINE_UP: |
b801d8b2 JF |
969 | if (lines > view->offset) |
970 | lines = view->offset; | |
971 | ||
972 | if (lines == 0) { | |
eb98559e | 973 | report("Cannot scroll beyond the first line"); |
b801d8b2 JF |
974 | return; |
975 | } | |
976 | ||
fd85fef1 | 977 | lines = -lines; |
b801d8b2 | 978 | break; |
03a93dbb | 979 | |
6b161b31 JF |
980 | default: |
981 | die("request %d not handled in switch", request); | |
b801d8b2 JF |
982 | } |
983 | ||
4a2909a7 | 984 | do_scroll_view(view, lines); |
fd85fef1 | 985 | } |
b801d8b2 | 986 | |
4a2909a7 | 987 | /* Cursor moving */ |
fd85fef1 | 988 | static void |
6b161b31 | 989 | move_view(struct view *view, enum request request) |
fd85fef1 JF |
990 | { |
991 | int steps; | |
b801d8b2 | 992 | |
fd85fef1 | 993 | switch (request) { |
4a2909a7 | 994 | case REQ_MOVE_FIRST_LINE: |
78c70acd JF |
995 | steps = -view->lineno; |
996 | break; | |
997 | ||
4a2909a7 | 998 | case REQ_MOVE_LAST_LINE: |
78c70acd JF |
999 | steps = view->lines - view->lineno - 1; |
1000 | break; | |
1001 | ||
4a2909a7 | 1002 | case REQ_MOVE_PAGE_UP: |
78c70acd JF |
1003 | steps = view->height > view->lineno |
1004 | ? -view->lineno : -view->height; | |
1005 | break; | |
1006 | ||
4a2909a7 | 1007 | case REQ_MOVE_PAGE_DOWN: |
78c70acd JF |
1008 | steps = view->lineno + view->height >= view->lines |
1009 | ? view->lines - view->lineno - 1 : view->height; | |
1010 | break; | |
1011 | ||
4a2909a7 | 1012 | case REQ_MOVE_UP: |
6706b2ba | 1013 | case REQ_MOVE_UP_ENTER: |
fd85fef1 JF |
1014 | steps = -1; |
1015 | break; | |
b801d8b2 | 1016 | |
4a2909a7 | 1017 | case REQ_MOVE_DOWN: |
6706b2ba | 1018 | case REQ_MOVE_DOWN_ENTER: |
fd85fef1 JF |
1019 | steps = 1; |
1020 | break; | |
6b161b31 JF |
1021 | |
1022 | default: | |
1023 | die("request %d not handled in switch", request); | |
78c70acd | 1024 | } |
b801d8b2 | 1025 | |
4c6fabc2 | 1026 | if (steps <= 0 && view->lineno == 0) { |
eb98559e | 1027 | report("Cannot move beyond the first line"); |
78c70acd | 1028 | return; |
b801d8b2 | 1029 | |
6908bdbd | 1030 | } else if (steps >= 0 && view->lineno + 1 >= view->lines) { |
eb98559e | 1031 | report("Cannot move beyond the last line"); |
78c70acd | 1032 | return; |
fd85fef1 JF |
1033 | } |
1034 | ||
4c6fabc2 | 1035 | /* Move the current line */ |
fd85fef1 | 1036 | view->lineno += steps; |
4c6fabc2 JF |
1037 | assert(0 <= view->lineno && view->lineno < view->lines); |
1038 | ||
1039 | /* Repaint the old "current" line if we be scrolling */ | |
2e8488b4 JF |
1040 | if (ABS(steps) < view->height) { |
1041 | int prev_lineno = view->lineno - steps - view->offset; | |
1042 | ||
1043 | wmove(view->win, prev_lineno, 0); | |
1044 | wclrtoeol(view->win); | |
03a93dbb | 1045 | view->ops->draw(view, prev_lineno); |
2e8488b4 | 1046 | } |
fd85fef1 | 1047 | |
4c6fabc2 | 1048 | /* Check whether the view needs to be scrolled */ |
fd85fef1 JF |
1049 | if (view->lineno < view->offset || |
1050 | view->lineno >= view->offset + view->height) { | |
1051 | if (steps < 0 && -steps > view->offset) { | |
1052 | steps = -view->offset; | |
b76c2afc JF |
1053 | |
1054 | } else if (steps > 0) { | |
1055 | if (view->lineno == view->lines - 1 && | |
1056 | view->lines > view->height) { | |
1057 | steps = view->lines - view->offset - 1; | |
1058 | if (steps >= view->height) | |
1059 | steps -= view->height - 1; | |
1060 | } | |
b801d8b2 | 1061 | } |
78c70acd | 1062 | |
4a2909a7 | 1063 | do_scroll_view(view, steps); |
fd85fef1 | 1064 | return; |
b801d8b2 JF |
1065 | } |
1066 | ||
4c6fabc2 | 1067 | /* Draw the current line */ |
6b161b31 | 1068 | view->ops->draw(view, view->lineno - view->offset); |
fd85fef1 | 1069 | |
b801d8b2 JF |
1070 | redrawwin(view->win); |
1071 | wrefresh(view->win); | |
9d3f5834 | 1072 | report(""); |
b801d8b2 JF |
1073 | } |
1074 | ||
b801d8b2 | 1075 | |
2e8488b4 JF |
1076 | /* |
1077 | * Incremental updating | |
1078 | */ | |
b801d8b2 | 1079 | |
03a93dbb | 1080 | static bool |
b801d8b2 JF |
1081 | begin_update(struct view *view) |
1082 | { | |
4685845e | 1083 | const char *id = view->id; |
fd85fef1 | 1084 | |
03a93dbb JF |
1085 | if (opt_cmd[0]) { |
1086 | string_copy(view->cmd, opt_cmd); | |
1087 | opt_cmd[0] = 0; | |
8855ada4 JF |
1088 | /* When running random commands, the view ref could have become |
1089 | * invalid so clear it. */ | |
1090 | view->ref[0] = 0; | |
03a93dbb | 1091 | } else { |
4685845e | 1092 | const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt; |
1ba2ae4b JF |
1093 | |
1094 | if (snprintf(view->cmd, sizeof(view->cmd), format, | |
1095 | id, id, id, id, id) >= sizeof(view->cmd)) | |
03a93dbb JF |
1096 | return FALSE; |
1097 | } | |
b801d8b2 | 1098 | |
6908bdbd JF |
1099 | /* Special case for the pager view. */ |
1100 | if (opt_pipe) { | |
1101 | view->pipe = opt_pipe; | |
1102 | opt_pipe = NULL; | |
1103 | } else { | |
1104 | view->pipe = popen(view->cmd, "r"); | |
1105 | } | |
1106 | ||
2e8488b4 JF |
1107 | if (!view->pipe) |
1108 | return FALSE; | |
b801d8b2 | 1109 | |
6b161b31 | 1110 | set_nonblocking_input(TRUE); |
b801d8b2 JF |
1111 | |
1112 | view->offset = 0; | |
1113 | view->lines = 0; | |
1114 | view->lineno = 0; | |
49f2b43f | 1115 | string_copy(view->vid, id); |
b801d8b2 | 1116 | |
2e8488b4 JF |
1117 | if (view->line) { |
1118 | int i; | |
1119 | ||
1120 | for (i = 0; i < view->lines; i++) | |
1121 | if (view->line[i]) | |
1122 | free(view->line[i]); | |
1123 | ||
1124 | free(view->line); | |
1125 | view->line = NULL; | |
1126 | } | |
1127 | ||
1128 | view->start_time = time(NULL); | |
1129 | ||
b801d8b2 JF |
1130 | return TRUE; |
1131 | } | |
1132 | ||
1133 | static void | |
1134 | end_update(struct view *view) | |
1135 | { | |
03a93dbb JF |
1136 | if (!view->pipe) |
1137 | return; | |
6b161b31 | 1138 | set_nonblocking_input(FALSE); |
80ce96ea JF |
1139 | if (view->pipe == stdin) |
1140 | fclose(view->pipe); | |
1141 | else | |
1142 | pclose(view->pipe); | |
2e8488b4 | 1143 | view->pipe = NULL; |
b801d8b2 JF |
1144 | } |
1145 | ||
03a93dbb | 1146 | static bool |
b801d8b2 JF |
1147 | update_view(struct view *view) |
1148 | { | |
1149 | char buffer[BUFSIZ]; | |
1150 | char *line; | |
22f66b0a | 1151 | void **tmp; |
82e78006 JF |
1152 | /* The number of lines to read. If too low it will cause too much |
1153 | * redrawing (and possible flickering), if too high responsiveness | |
1154 | * will suffer. */ | |
8855ada4 | 1155 | unsigned long lines = view->height; |
82e78006 | 1156 | int redraw_from = -1; |
b801d8b2 JF |
1157 | |
1158 | if (!view->pipe) | |
1159 | return TRUE; | |
1160 | ||
82e78006 JF |
1161 | /* Only redraw if lines are visible. */ |
1162 | if (view->offset + view->height >= view->lines) | |
1163 | redraw_from = view->lines - view->offset; | |
b801d8b2 JF |
1164 | |
1165 | tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines)); | |
1166 | if (!tmp) | |
1167 | goto alloc_error; | |
1168 | ||
1169 | view->line = tmp; | |
1170 | ||
1171 | while ((line = fgets(buffer, sizeof(buffer), view->pipe))) { | |
c34d9c9f | 1172 | int linelen = strlen(line); |
b801d8b2 | 1173 | |
b801d8b2 JF |
1174 | if (linelen) |
1175 | line[linelen - 1] = 0; | |
1176 | ||
6b161b31 | 1177 | if (!view->ops->read(view, line)) |
b801d8b2 | 1178 | goto alloc_error; |
fd85fef1 JF |
1179 | |
1180 | if (lines-- == 1) | |
1181 | break; | |
b801d8b2 JF |
1182 | } |
1183 | ||
8855ada4 JF |
1184 | { |
1185 | int digits; | |
1186 | ||
1187 | lines = view->lines; | |
1188 | for (digits = 0; lines; digits++) | |
1189 | lines /= 10; | |
1190 | ||
1191 | /* Keep the displayed view in sync with line number scaling. */ | |
1192 | if (digits != view->digits) { | |
1193 | view->digits = digits; | |
1194 | redraw_from = 0; | |
1195 | } | |
1196 | } | |
1197 | ||
82e78006 JF |
1198 | if (redraw_from >= 0) { |
1199 | /* If this is an incremental update, redraw the previous line | |
a28bcc22 JF |
1200 | * since for commits some members could have changed when |
1201 | * loading the main view. */ | |
82e78006 JF |
1202 | if (redraw_from > 0) |
1203 | redraw_from--; | |
1204 | ||
1205 | /* Incrementally draw avoids flickering. */ | |
1206 | redraw_view_from(view, redraw_from); | |
4c6fabc2 | 1207 | } |
b801d8b2 | 1208 | |
eb98559e JF |
1209 | /* Update the title _after_ the redraw so that if the redraw picks up a |
1210 | * commit reference in view->ref it'll be available here. */ | |
1211 | update_view_title(view); | |
1212 | ||
b801d8b2 | 1213 | if (ferror(view->pipe)) { |
03a93dbb | 1214 | report("Failed to read: %s", strerror(errno)); |
b801d8b2 JF |
1215 | goto end; |
1216 | ||
1217 | } else if (feof(view->pipe)) { | |
2e8488b4 JF |
1218 | time_t secs = time(NULL) - view->start_time; |
1219 | ||
a28bcc22 | 1220 | if (view == VIEW(REQ_VIEW_HELP)) { |
4685845e | 1221 | const char *msg = TIG_HELP; |
468876c9 JF |
1222 | |
1223 | if (view->lines == 0) { | |
1224 | /* Slightly ugly, but abusing view->ref keeps | |
1225 | * the error message. */ | |
1226 | string_copy(view->ref, "No help available"); | |
1227 | msg = "The tig(1) manpage is not installed"; | |
1228 | } | |
1229 | ||
1230 | report("%s", msg); | |
2e8488b4 JF |
1231 | goto end; |
1232 | } | |
1233 | ||
1234 | report("Loaded %d lines in %ld second%s", view->lines, secs, | |
1235 | secs == 1 ? "" : "s"); | |
b801d8b2 JF |
1236 | goto end; |
1237 | } | |
1238 | ||
1239 | return TRUE; | |
1240 | ||
1241 | alloc_error: | |
2e8488b4 | 1242 | report("Allocation failure"); |
b801d8b2 JF |
1243 | |
1244 | end: | |
1245 | end_update(view); | |
1246 | return FALSE; | |
1247 | } | |
1248 | ||
49f2b43f JF |
1249 | enum open_flags { |
1250 | OPEN_DEFAULT = 0, /* Use default view switching. */ | |
1251 | OPEN_SPLIT = 1, /* Split current view. */ | |
1252 | OPEN_BACKGROUNDED = 2, /* Backgrounded. */ | |
1253 | OPEN_RELOAD = 4, /* Reload view even if it is the current. */ | |
1254 | }; | |
1255 | ||
6b161b31 | 1256 | static void |
49f2b43f | 1257 | open_view(struct view *prev, enum request request, enum open_flags flags) |
b801d8b2 | 1258 | { |
49f2b43f JF |
1259 | bool backgrounded = !!(flags & OPEN_BACKGROUNDED); |
1260 | bool split = !!(flags & OPEN_SPLIT); | |
1261 | bool reload = !!(flags & OPEN_RELOAD); | |
a28bcc22 | 1262 | struct view *view = VIEW(request); |
4f774851 | 1263 | int nviews = display[1] ? 2 : 1; |
b801d8b2 | 1264 | |
49f2b43f | 1265 | if (view == prev && nviews == 1 && !reload) { |
6b161b31 JF |
1266 | report("Already in %s view", view->name); |
1267 | return; | |
1268 | } | |
b801d8b2 | 1269 | |
8855ada4 | 1270 | if ((reload || strcmp(view->vid, view->id)) && |
03a93dbb | 1271 | !begin_update(view)) { |
6b161b31 JF |
1272 | report("Failed to load %s view", view->name); |
1273 | return; | |
1274 | } | |
a28bcc22 | 1275 | |
6b161b31 JF |
1276 | if (split) { |
1277 | display[current_view + 1] = view; | |
1278 | if (!backgrounded) | |
a28bcc22 | 1279 | current_view++; |
6b161b31 JF |
1280 | } else { |
1281 | /* Maximize the current view. */ | |
1282 | memset(display, 0, sizeof(display)); | |
1283 | current_view = 0; | |
1284 | display[current_view] = view; | |
a28bcc22 | 1285 | } |
b801d8b2 | 1286 | |
6b161b31 | 1287 | resize_display(); |
b801d8b2 | 1288 | |
a8891802 | 1289 | if (split && prev->lineno - prev->offset >= prev->height) { |
03a93dbb | 1290 | /* Take the title line into account. */ |
eb98559e | 1291 | int lines = prev->lineno - prev->offset - prev->height + 1; |
03a93dbb JF |
1292 | |
1293 | /* Scroll the view that was split if the current line is | |
1294 | * outside the new limited view. */ | |
1295 | do_scroll_view(prev, lines); | |
1296 | } | |
1297 | ||
6b161b31 JF |
1298 | if (prev && view != prev) { |
1299 | /* "Blur" the previous view. */ | |
6706b2ba JF |
1300 | if (!backgrounded) |
1301 | update_view_title(prev); | |
6b161b31 JF |
1302 | |
1303 | /* Continue loading split views in the background. */ | |
03a93dbb | 1304 | if (!split) |
6b161b31 | 1305 | end_update(prev); |
f6da0b66 | 1306 | view->parent = prev; |
b801d8b2 JF |
1307 | } |
1308 | ||
03a93dbb JF |
1309 | if (view->pipe) { |
1310 | /* Clear the old view and let the incremental updating refill | |
1311 | * the screen. */ | |
1312 | wclear(view->win); | |
1313 | report("Loading..."); | |
1314 | } else { | |
1315 | redraw_view(view); | |
468876c9 JF |
1316 | if (view == VIEW(REQ_VIEW_HELP)) |
1317 | report("%s", TIG_HELP); | |
1318 | else | |
1319 | report(""); | |
03a93dbb | 1320 | } |
6706b2ba JF |
1321 | |
1322 | /* If the view is backgrounded the above calls to report() | |
1323 | * won't redraw the view title. */ | |
1324 | if (backgrounded) | |
1325 | update_view_title(view); | |
b801d8b2 JF |
1326 | } |
1327 | ||
1328 | ||
6b161b31 JF |
1329 | /* |
1330 | * User request switch noodle | |
1331 | */ | |
1332 | ||
b801d8b2 | 1333 | static int |
6b161b31 | 1334 | view_driver(struct view *view, enum request request) |
b801d8b2 | 1335 | { |
b801d8b2 JF |
1336 | int i; |
1337 | ||
1338 | switch (request) { | |
4a2909a7 JF |
1339 | case REQ_MOVE_UP: |
1340 | case REQ_MOVE_DOWN: | |
1341 | case REQ_MOVE_PAGE_UP: | |
1342 | case REQ_MOVE_PAGE_DOWN: | |
1343 | case REQ_MOVE_FIRST_LINE: | |
1344 | case REQ_MOVE_LAST_LINE: | |
a28bcc22 | 1345 | move_view(view, request); |
fd85fef1 JF |
1346 | break; |
1347 | ||
4a2909a7 JF |
1348 | case REQ_SCROLL_LINE_DOWN: |
1349 | case REQ_SCROLL_LINE_UP: | |
1350 | case REQ_SCROLL_PAGE_DOWN: | |
1351 | case REQ_SCROLL_PAGE_UP: | |
a28bcc22 | 1352 | scroll_view(view, request); |
b801d8b2 JF |
1353 | break; |
1354 | ||
4a2909a7 | 1355 | case REQ_VIEW_MAIN: |
4a2909a7 | 1356 | case REQ_VIEW_DIFF: |
2e8488b4 JF |
1357 | case REQ_VIEW_LOG: |
1358 | case REQ_VIEW_HELP: | |
6908bdbd | 1359 | case REQ_VIEW_PAGER: |
49f2b43f | 1360 | open_view(view, request, OPEN_DEFAULT); |
b801d8b2 JF |
1361 | break; |
1362 | ||
6706b2ba JF |
1363 | case REQ_MOVE_UP_ENTER: |
1364 | case REQ_MOVE_DOWN_ENTER: | |
1365 | move_view(view, request); | |
1366 | /* Fall-through */ | |
1367 | ||
6b161b31 | 1368 | case REQ_ENTER: |
6908bdbd JF |
1369 | if (!view->lines) { |
1370 | report("Nothing to enter"); | |
1371 | break; | |
1372 | } | |
6b161b31 JF |
1373 | return view->ops->enter(view); |
1374 | ||
03a93dbb JF |
1375 | case REQ_VIEW_NEXT: |
1376 | { | |
1377 | int nviews = display[1] ? 2 : 1; | |
1378 | int next_view = (current_view + 1) % nviews; | |
1379 | ||
1380 | if (next_view == current_view) { | |
1381 | report("Only one view is displayed"); | |
1382 | break; | |
1383 | } | |
1384 | ||
1385 | current_view = next_view; | |
1386 | /* Blur out the title of the previous view. */ | |
1387 | update_view_title(view); | |
6734f6b9 | 1388 | report(""); |
03a93dbb JF |
1389 | break; |
1390 | } | |
4a2909a7 | 1391 | case REQ_TOGGLE_LINE_NUMBERS: |
b76c2afc | 1392 | opt_line_number = !opt_line_number; |
20bb5e18 | 1393 | redraw_display(); |
b801d8b2 JF |
1394 | break; |
1395 | ||
03a93dbb | 1396 | case REQ_PROMPT: |
8855ada4 | 1397 | /* Always reload^Wrerun commands from the prompt. */ |
49f2b43f | 1398 | open_view(view, opt_request, OPEN_RELOAD); |
03a93dbb JF |
1399 | break; |
1400 | ||
4a2909a7 | 1401 | case REQ_STOP_LOADING: |
03a93dbb | 1402 | foreach_view (view, i) { |
2e8488b4 | 1403 | if (view->pipe) |
6706b2ba | 1404 | report("Stopped loaded the %s view", view->name), |
03a93dbb JF |
1405 | end_update(view); |
1406 | } | |
b801d8b2 JF |
1407 | break; |
1408 | ||
4a2909a7 | 1409 | case REQ_SHOW_VERSION: |
6cb291b7 | 1410 | report("%s (built %s)", VERSION, __DATE__); |
b801d8b2 JF |
1411 | return TRUE; |
1412 | ||
fac7db6c JF |
1413 | case REQ_SCREEN_RESIZE: |
1414 | resize_display(); | |
1415 | /* Fall-through */ | |
4a2909a7 | 1416 | case REQ_SCREEN_REDRAW: |
20bb5e18 | 1417 | redraw_display(); |
4a2909a7 JF |
1418 | break; |
1419 | ||
1420 | case REQ_SCREEN_UPDATE: | |
b801d8b2 JF |
1421 | doupdate(); |
1422 | return TRUE; | |
1423 | ||
4f9b667a | 1424 | case REQ_VIEW_CLOSE: |
f6da0b66 | 1425 | if (view->parent) { |
4f9b667a JF |
1426 | memset(display, 0, sizeof(display)); |
1427 | current_view = 0; | |
f6da0b66 JF |
1428 | display[current_view] = view->parent; |
1429 | view->parent = NULL; | |
4f9b667a JF |
1430 | resize_display(); |
1431 | redraw_display(); | |
1432 | break; | |
1433 | } | |
1434 | /* Fall-through */ | |
b801d8b2 JF |
1435 | case REQ_QUIT: |
1436 | return FALSE; | |
1437 | ||
1438 | default: | |
2e8488b4 | 1439 | /* An unknown key will show most commonly used commands. */ |
468876c9 | 1440 | report("Unknown key, press 'h' for help"); |
b801d8b2 JF |
1441 | return TRUE; |
1442 | } | |
1443 | ||
1444 | return TRUE; | |
1445 | } | |
1446 | ||
1447 | ||
1448 | /* | |
6b161b31 | 1449 | * View backend handlers |
b801d8b2 JF |
1450 | */ |
1451 | ||
6b161b31 | 1452 | static bool |
22f66b0a | 1453 | pager_draw(struct view *view, unsigned int lineno) |
b801d8b2 | 1454 | { |
78c70acd | 1455 | enum line_type type; |
b801d8b2 | 1456 | char *line; |
4c6fabc2 | 1457 | int linelen; |
78c70acd | 1458 | int attr; |
b801d8b2 | 1459 | |
fd85fef1 JF |
1460 | if (view->offset + lineno >= view->lines) |
1461 | return FALSE; | |
1462 | ||
b801d8b2 | 1463 | line = view->line[view->offset + lineno]; |
78c70acd | 1464 | type = get_line_type(line); |
b801d8b2 | 1465 | |
6706b2ba JF |
1466 | wmove(view->win, lineno, 0); |
1467 | ||
fd85fef1 | 1468 | if (view->offset + lineno == view->lineno) { |
8855ada4 | 1469 | if (type == LINE_COMMIT) { |
03a93dbb JF |
1470 | string_copy(view->ref, line + 7); |
1471 | string_copy(ref_commit, view->ref); | |
1472 | } | |
8855ada4 | 1473 | |
78c70acd | 1474 | type = LINE_CURSOR; |
6706b2ba | 1475 | wchgat(view->win, -1, 0, type, NULL); |
fd85fef1 JF |
1476 | } |
1477 | ||
78c70acd | 1478 | attr = get_line_attr(type); |
b801d8b2 | 1479 | wattrset(view->win, attr); |
b76c2afc | 1480 | |
4c6fabc2 | 1481 | linelen = strlen(line); |
4c6fabc2 | 1482 | |
6706b2ba JF |
1483 | if (opt_line_number || opt_tab_size < TABSIZE) { |
1484 | static char spaces[] = " "; | |
1485 | int col_offset = 0, col = 0; | |
1486 | ||
1487 | if (opt_line_number) { | |
1488 | unsigned long real_lineno = view->offset + lineno + 1; | |
82e78006 | 1489 | |
6706b2ba JF |
1490 | if (real_lineno == 1 || |
1491 | (real_lineno % opt_num_interval) == 0) { | |
1492 | wprintw(view->win, "%.*d", view->digits, real_lineno); | |
8855ada4 | 1493 | |
6706b2ba JF |
1494 | } else { |
1495 | waddnstr(view->win, spaces, | |
1496 | MIN(view->digits, STRING_SIZE(spaces))); | |
1497 | } | |
1498 | waddstr(view->win, ": "); | |
1499 | col_offset = view->digits + 2; | |
1500 | } | |
8855ada4 | 1501 | |
6706b2ba JF |
1502 | while (line && col_offset + col < view->width) { |
1503 | int cols_max = view->width - col_offset - col; | |
1504 | char *text = line; | |
1505 | int cols; | |
4c6fabc2 | 1506 | |
b76c2afc | 1507 | if (*line == '\t') { |
6706b2ba | 1508 | assert(sizeof(spaces) > TABSIZE); |
b76c2afc | 1509 | line++; |
6706b2ba JF |
1510 | text = spaces; |
1511 | cols = opt_tab_size - (col % opt_tab_size); | |
82e78006 | 1512 | |
b76c2afc | 1513 | } else { |
6706b2ba JF |
1514 | line = strchr(line, '\t'); |
1515 | cols = line ? line - text : strlen(text); | |
b76c2afc | 1516 | } |
6706b2ba JF |
1517 | |
1518 | waddnstr(view->win, text, MIN(cols, cols_max)); | |
1519 | col += cols; | |
b76c2afc | 1520 | } |
b76c2afc JF |
1521 | |
1522 | } else { | |
6706b2ba | 1523 | int col = 0, pos = 0; |
b801d8b2 | 1524 | |
6706b2ba JF |
1525 | for (; pos < linelen && col < view->width; pos++, col++) |
1526 | if (line[pos] == '\t') | |
1527 | col += TABSIZE - (col % TABSIZE) - 1; | |
1528 | ||
1529 | waddnstr(view->win, line, pos); | |
1530 | } | |
2e8488b4 | 1531 | |
b801d8b2 JF |
1532 | return TRUE; |
1533 | } | |
1534 | ||
6b161b31 | 1535 | static bool |
22f66b0a JF |
1536 | pager_read(struct view *view, char *line) |
1537 | { | |
6706b2ba JF |
1538 | /* Compress empty lines in the help view. */ |
1539 | if (view == VIEW(REQ_VIEW_HELP) && | |
1540 | !*line && | |
1541 | view->lines && | |
1542 | !*((char *) view->line[view->lines - 1])) | |
1543 | return TRUE; | |
1544 | ||
22f66b0a JF |
1545 | view->line[view->lines] = strdup(line); |
1546 | if (!view->line[view->lines]) | |
1547 | return FALSE; | |
1548 | ||
1549 | view->lines++; | |
1550 | return TRUE; | |
1551 | } | |
1552 | ||
6b161b31 JF |
1553 | static bool |
1554 | pager_enter(struct view *view) | |
1555 | { | |
1556 | char *line = view->line[view->lineno]; | |
91e8e277 | 1557 | int split = 0; |
6b161b31 | 1558 | |
91e8e277 | 1559 | if ((view == VIEW(REQ_VIEW_LOG) || |
415de53c | 1560 | view == VIEW(REQ_VIEW_PAGER)) && |
91e8e277 JF |
1561 | get_line_type(line) == LINE_COMMIT) { |
1562 | open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT); | |
1563 | split = 1; | |
67e48ac5 JF |
1564 | } |
1565 | ||
91e8e277 JF |
1566 | /* Always scroll the view even if it was split. That way |
1567 | * you can use Enter to scroll through the log view and | |
1568 | * split open each commit diff. */ | |
1569 | scroll_view(view, REQ_SCROLL_LINE_DOWN); | |
1570 | ||
1571 | /* FIXME: A minor workaround. Scrolling the view will call report("") | |
1572 | * but if we are scolling a non-current view this won't properly update | |
1573 | * the view title. */ | |
1574 | if (split) | |
1575 | update_view_title(view); | |
6b161b31 JF |
1576 | |
1577 | return TRUE; | |
1578 | } | |
1579 | ||
6b161b31 | 1580 | static struct view_ops pager_ops = { |
6734f6b9 | 1581 | "line", |
6b161b31 JF |
1582 | pager_draw, |
1583 | pager_read, | |
1584 | pager_enter, | |
1585 | }; | |
1586 | ||
80ce96ea | 1587 | |
c34d9c9f JF |
1588 | static struct ref **get_refs(char *id); |
1589 | ||
6b161b31 | 1590 | static bool |
22f66b0a JF |
1591 | main_draw(struct view *view, unsigned int lineno) |
1592 | { | |
2e8488b4 | 1593 | char buf[DATE_COLS + 1]; |
22f66b0a | 1594 | struct commit *commit; |
78c70acd | 1595 | enum line_type type; |
6706b2ba | 1596 | int col = 0; |
b76c2afc | 1597 | size_t timelen; |
10e290ee JF |
1598 | size_t authorlen; |
1599 | int trimmed; | |
22f66b0a JF |
1600 | |
1601 | if (view->offset + lineno >= view->lines) | |
1602 | return FALSE; | |
1603 | ||
1604 | commit = view->line[view->offset + lineno]; | |
4c6fabc2 JF |
1605 | if (!*commit->author) |
1606 | return FALSE; | |
22f66b0a | 1607 | |
6706b2ba JF |
1608 | wmove(view->win, lineno, col); |
1609 | ||
22f66b0a | 1610 | if (view->offset + lineno == view->lineno) { |
03a93dbb | 1611 | string_copy(view->ref, commit->id); |
49f2b43f | 1612 | string_copy(ref_commit, view->ref); |
78c70acd | 1613 | type = LINE_CURSOR; |
6706b2ba JF |
1614 | wattrset(view->win, get_line_attr(type)); |
1615 | wchgat(view->win, -1, 0, type, NULL); | |
1616 | ||
78c70acd | 1617 | } else { |
b76c2afc | 1618 | type = LINE_MAIN_COMMIT; |
6706b2ba | 1619 | wattrset(view->win, get_line_attr(LINE_MAIN_DATE)); |
b76c2afc JF |
1620 | } |
1621 | ||
4c6fabc2 | 1622 | timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time); |
b76c2afc | 1623 | waddnstr(view->win, buf, timelen); |
4c6fabc2 | 1624 | waddstr(view->win, " "); |
b76c2afc | 1625 | |
6706b2ba JF |
1626 | col += DATE_COLS; |
1627 | wmove(view->win, lineno, col); | |
1628 | if (type != LINE_CURSOR) | |
1629 | wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR)); | |
b76c2afc | 1630 | |
10e290ee JF |
1631 | /* FIXME: Make this optional, and add i18n.commitEncoding support. */ |
1632 | authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed); | |
1633 | ||
1634 | if (trimmed) { | |
1635 | waddnstr(view->win, commit->author, authorlen); | |
6706b2ba JF |
1636 | if (type != LINE_CURSOR) |
1637 | wattrset(view->win, get_line_attr(LINE_MAIN_DELIM)); | |
b76c2afc JF |
1638 | waddch(view->win, '~'); |
1639 | } else { | |
1640 | waddstr(view->win, commit->author); | |
22f66b0a JF |
1641 | } |
1642 | ||
10e290ee | 1643 | col += AUTHOR_COLS; |
6706b2ba JF |
1644 | if (type != LINE_CURSOR) |
1645 | wattrset(view->win, A_NORMAL); | |
1646 | ||
1647 | mvwaddch(view->win, lineno, col, ACS_LTEE); | |
1648 | wmove(view->win, lineno, col + 2); | |
1649 | col += 2; | |
c34d9c9f JF |
1650 | |
1651 | if (commit->refs) { | |
1652 | size_t i = 0; | |
1653 | ||
1654 | do { | |
6706b2ba JF |
1655 | if (type == LINE_CURSOR) |
1656 | ; | |
1657 | else if (commit->refs[i]->tag) | |
c34d9c9f JF |
1658 | wattrset(view->win, get_line_attr(LINE_MAIN_TAG)); |
1659 | else | |
1660 | wattrset(view->win, get_line_attr(LINE_MAIN_REF)); | |
1661 | waddstr(view->win, "["); | |
1662 | waddstr(view->win, commit->refs[i]->name); | |
1663 | waddstr(view->win, "]"); | |
6706b2ba JF |
1664 | if (type != LINE_CURSOR) |
1665 | wattrset(view->win, A_NORMAL); | |
c34d9c9f | 1666 | waddstr(view->win, " "); |
6706b2ba | 1667 | col += strlen(commit->refs[i]->name) + STRING_SIZE("[] "); |
c34d9c9f JF |
1668 | } while (commit->refs[i++]->next); |
1669 | } | |
1670 | ||
6706b2ba JF |
1671 | if (type != LINE_CURSOR) |
1672 | wattrset(view->win, get_line_attr(type)); | |
1673 | ||
1674 | { | |
1675 | int titlelen = strlen(commit->title); | |
1676 | ||
1677 | if (col + titlelen > view->width) | |
1678 | titlelen = view->width - col; | |
1679 | ||
1680 | waddnstr(view->win, commit->title, titlelen); | |
1681 | } | |
22f66b0a JF |
1682 | |
1683 | return TRUE; | |
1684 | } | |
1685 | ||
4c6fabc2 | 1686 | /* Reads git log --pretty=raw output and parses it into the commit struct. */ |
6b161b31 | 1687 | static bool |
22f66b0a JF |
1688 | main_read(struct view *view, char *line) |
1689 | { | |
78c70acd JF |
1690 | enum line_type type = get_line_type(line); |
1691 | struct commit *commit; | |
22f66b0a | 1692 | |
78c70acd JF |
1693 | switch (type) { |
1694 | case LINE_COMMIT: | |
22f66b0a JF |
1695 | commit = calloc(1, sizeof(struct commit)); |
1696 | if (!commit) | |
1697 | return FALSE; | |
1698 | ||
4c6fabc2 | 1699 | line += STRING_SIZE("commit "); |
b76c2afc | 1700 | |
22f66b0a | 1701 | view->line[view->lines++] = commit; |
82e78006 | 1702 | string_copy(commit->id, line); |
c34d9c9f | 1703 | commit->refs = get_refs(commit->id); |
78c70acd | 1704 | break; |
22f66b0a | 1705 | |
8855ada4 | 1706 | case LINE_AUTHOR: |
b76c2afc | 1707 | { |
4c6fabc2 | 1708 | char *ident = line + STRING_SIZE("author "); |
b76c2afc JF |
1709 | char *end = strchr(ident, '<'); |
1710 | ||
1711 | if (end) { | |
1712 | for (; end > ident && isspace(end[-1]); end--) ; | |
1713 | *end = 0; | |
1714 | } | |
1715 | ||
1716 | commit = view->line[view->lines - 1]; | |
82e78006 | 1717 | string_copy(commit->author, ident); |
b76c2afc | 1718 | |
4c6fabc2 | 1719 | /* Parse epoch and timezone */ |
b76c2afc JF |
1720 | if (end) { |
1721 | char *secs = strchr(end + 1, '>'); | |
1722 | char *zone; | |
1723 | time_t time; | |
1724 | ||
1725 | if (!secs || secs[1] != ' ') | |
1726 | break; | |
1727 | ||
1728 | secs += 2; | |
1729 | time = (time_t) atol(secs); | |
1730 | zone = strchr(secs, ' '); | |
4c6fabc2 | 1731 | if (zone && strlen(zone) == STRING_SIZE(" +0700")) { |
b76c2afc JF |
1732 | long tz; |
1733 | ||
1734 | zone++; | |
1735 | tz = ('0' - zone[1]) * 60 * 60 * 10; | |
1736 | tz += ('0' - zone[2]) * 60 * 60; | |
1737 | tz += ('0' - zone[3]) * 60; | |
1738 | tz += ('0' - zone[4]) * 60; | |
1739 | ||
1740 | if (zone[0] == '-') | |
1741 | tz = -tz; | |
1742 | ||
1743 | time -= tz; | |
1744 | } | |
1745 | gmtime_r(&time, &commit->time); | |
1746 | } | |
1747 | break; | |
1748 | } | |
78c70acd | 1749 | default: |
2e8488b4 JF |
1750 | /* We should only ever end up here if there has already been a |
1751 | * commit line, however, be safe. */ | |
1752 | if (view->lines == 0) | |
1753 | break; | |
1754 | ||
1755 | /* Fill in the commit title if it has not already been set. */ | |
78c70acd | 1756 | commit = view->line[view->lines - 1]; |
2e8488b4 JF |
1757 | if (commit->title[0]) |
1758 | break; | |
1759 | ||
1760 | /* Require titles to start with a non-space character at the | |
1761 | * offset used by git log. */ | |
eb98559e JF |
1762 | /* FIXME: More gracefull handling of titles; append "..." to |
1763 | * shortened titles, etc. */ | |
2e8488b4 | 1764 | if (strncmp(line, " ", 4) || |
eb98559e | 1765 | isspace(line[4])) |
82e78006 JF |
1766 | break; |
1767 | ||
1768 | string_copy(commit->title, line + 4); | |
22f66b0a JF |
1769 | } |
1770 | ||
1771 | return TRUE; | |
1772 | } | |
1773 | ||
6b161b31 JF |
1774 | static bool |
1775 | main_enter(struct view *view) | |
b801d8b2 | 1776 | { |
89e4aafd | 1777 | open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT); |
6b161b31 | 1778 | return TRUE; |
b801d8b2 JF |
1779 | } |
1780 | ||
6b161b31 | 1781 | static struct view_ops main_ops = { |
6734f6b9 | 1782 | "commit", |
6b161b31 JF |
1783 | main_draw, |
1784 | main_read, | |
1785 | main_enter, | |
1786 | }; | |
2e8488b4 | 1787 | |
c34d9c9f | 1788 | |
468876c9 JF |
1789 | /** |
1790 | * KEYS | |
1791 | * ---- | |
1792 | * Below the default key bindings are shown. | |
1793 | **/ | |
1794 | ||
1795 | struct keymap { | |
1796 | int alias; | |
1797 | int request; | |
1798 | }; | |
1799 | ||
3a91b75e | 1800 | static struct keymap keymap[] = { |
468876c9 JF |
1801 | /** |
1802 | * View switching | |
1803 | * ~~~~~~~~~~~~~~ | |
1804 | * m:: | |
1805 | * Switch to main view. | |
1806 | * d:: | |
1807 | * Switch to diff view. | |
1808 | * l:: | |
1809 | * Switch to log view. | |
1810 | * p:: | |
1811 | * Switch to pager view. | |
1812 | * h:: | |
1813 | * Show man page. | |
4f9b667a | 1814 | * q:: |
f6da0b66 JF |
1815 | * Close view, if multiple views are open it will jump back to the |
1816 | * previous view in the view stack. If it is the last open view it | |
1817 | * will quit. Use 'Q' to quit all views at once. | |
67e48ac5 JF |
1818 | * Enter:: |
1819 | * This key is "context sensitive" depending on what view you are | |
1820 | * currently in. When in log view on a commit line or in the main | |
1821 | * view, split the view and show the commit diff. In the diff view | |
1822 | * pressing Enter will simply scroll the view one line down. | |
468876c9 JF |
1823 | * Tab:: |
1824 | * Switch to next view. | |
1825 | **/ | |
1826 | { 'm', REQ_VIEW_MAIN }, | |
1827 | { 'd', REQ_VIEW_DIFF }, | |
1828 | { 'l', REQ_VIEW_LOG }, | |
1829 | { 'p', REQ_VIEW_PAGER }, | |
1830 | { 'h', REQ_VIEW_HELP }, | |
1831 | ||
4f9b667a | 1832 | { 'q', REQ_VIEW_CLOSE }, |
468876c9 JF |
1833 | { KEY_TAB, REQ_VIEW_NEXT }, |
1834 | { KEY_RETURN, REQ_ENTER }, | |
1835 | ||
1836 | /** | |
1837 | * Cursor navigation | |
1838 | * ~~~~~~~~~~~~~~~~~ | |
1839 | * Up:: | |
57bdf034 | 1840 | * Move cursor one line up. |
468876c9 JF |
1841 | * Down:: |
1842 | * Move cursor one line down. | |
1843 | * k:: | |
57bdf034 | 1844 | * Move cursor one line up and enter. When used in the main view |
468876c9 JF |
1845 | * this will always show the diff of the current commit in the |
1846 | * split diff view. | |
1847 | * j:: | |
1848 | * Move cursor one line down and enter. | |
1849 | * PgUp:: | |
c622eefa | 1850 | * b:: |
0df811cb | 1851 | * -:: |
57bdf034 | 1852 | * Move cursor one page up. |
468876c9 | 1853 | * PgDown:: |
c622eefa | 1854 | * Space:: |
468876c9 JF |
1855 | * Move cursor one page down. |
1856 | * Home:: | |
1857 | * Jump to first line. | |
1858 | * End:: | |
1859 | * Jump to last line. | |
1860 | **/ | |
1861 | { KEY_UP, REQ_MOVE_UP }, | |
1862 | { KEY_DOWN, REQ_MOVE_DOWN }, | |
1863 | { 'k', REQ_MOVE_UP_ENTER }, | |
1864 | { 'j', REQ_MOVE_DOWN_ENTER }, | |
1865 | { KEY_HOME, REQ_MOVE_FIRST_LINE }, | |
1866 | { KEY_END, REQ_MOVE_LAST_LINE }, | |
1867 | { KEY_NPAGE, REQ_MOVE_PAGE_DOWN }, | |
c622eefa | 1868 | { ' ', REQ_MOVE_PAGE_DOWN }, |
468876c9 | 1869 | { KEY_PPAGE, REQ_MOVE_PAGE_UP }, |
c622eefa | 1870 | { 'b', REQ_MOVE_PAGE_UP }, |
0df811cb | 1871 | { '-', REQ_MOVE_PAGE_UP }, |
468876c9 JF |
1872 | |
1873 | /** | |
1874 | * Scrolling | |
1875 | * ~~~~~~~~~ | |
1876 | * Insert:: | |
1877 | * Scroll view one line up. | |
1878 | * Delete:: | |
1879 | * Scroll view one line down. | |
1880 | * w:: | |
1881 | * Scroll view one page up. | |
1882 | * s:: | |
1883 | * Scroll view one page down. | |
1884 | **/ | |
1885 | { KEY_IC, REQ_SCROLL_LINE_UP }, | |
1886 | { KEY_DC, REQ_SCROLL_LINE_DOWN }, | |
1887 | { 'w', REQ_SCROLL_PAGE_UP }, | |
1888 | { 's', REQ_SCROLL_PAGE_DOWN }, | |
1889 | ||
1890 | /** | |
1891 | * Misc | |
1892 | * ~~~~ | |
d9d1c722 JF |
1893 | * Q:: |
1894 | * Quit. | |
468876c9 JF |
1895 | * r:: |
1896 | * Redraw screen. | |
1897 | * z:: | |
1898 | * Stop all background loading. This can be useful if you use | |
1899 | * tig(1) in a repository with a long history without limiting | |
0721c53a | 1900 | * the revision log. |
468876c9 JF |
1901 | * v:: |
1902 | * Show version. | |
1903 | * n:: | |
1904 | * Toggle line numbers on/off. | |
1905 | * ':':: | |
1906 | * Open prompt. This allows you to specify what git command | |
1907 | * to run. Example: | |
1908 | * | |
1909 | * :log -p | |
1910 | **/ | |
d9d1c722 | 1911 | { 'Q', REQ_QUIT }, |
468876c9 JF |
1912 | { 'z', REQ_STOP_LOADING }, |
1913 | { 'v', REQ_SHOW_VERSION }, | |
1914 | { 'r', REQ_SCREEN_REDRAW }, | |
1915 | { 'n', REQ_TOGGLE_LINE_NUMBERS }, | |
1916 | { ':', REQ_PROMPT }, | |
1917 | ||
1918 | /* wgetch() with nodelay() enabled returns ERR when there's no input. */ | |
1919 | { ERR, REQ_SCREEN_UPDATE }, | |
1920 | ||
1921 | /* Use the ncurses SIGWINCH handler. */ | |
1922 | { KEY_RESIZE, REQ_SCREEN_RESIZE }, | |
1923 | }; | |
1924 | ||
1925 | static enum request | |
1926 | get_request(int key) | |
1927 | { | |
1928 | int i; | |
1929 | ||
1930 | for (i = 0; i < ARRAY_SIZE(keymap); i++) | |
1931 | if (keymap[i].alias == key) | |
1932 | return keymap[i].request; | |
1933 | ||
1934 | return (enum request) key; | |
1935 | } | |
1936 | ||
1937 | ||
6b161b31 | 1938 | /* |
10e290ee JF |
1939 | * Unicode / UTF-8 handling |
1940 | * | |
1941 | * NOTE: Much of the following code for dealing with unicode is derived from | |
1942 | * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is | |
1943 | * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28. | |
1944 | */ | |
1945 | ||
1946 | /* I've (over)annotated a lot of code snippets because I am not entirely | |
1947 | * confident that the approach taken by this small UTF-8 interface is correct. | |
1948 | * --jonas */ | |
1949 | ||
1950 | static inline int | |
1951 | unicode_width(unsigned long c) | |
1952 | { | |
1953 | if (c >= 0x1100 && | |
1954 | (c <= 0x115f /* Hangul Jamo */ | |
1955 | || c == 0x2329 | |
1956 | || c == 0x232a | |
1957 | || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f) | |
1958 | /* CJK ... Yi */ | |
1959 | || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */ | |
1960 | || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */ | |
1961 | || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */ | |
1962 | || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */ | |
1963 | || (c >= 0xffe0 && c <= 0xffe6) | |
1964 | || (c >= 0x20000 && c <= 0x2fffd) | |
1965 | || (c >= 0x30000 && c <= 0x3fffd))) | |
1966 | return 2; | |
1967 | ||
1968 | return 1; | |
1969 | } | |
1970 | ||
1971 | /* Number of bytes used for encoding a UTF-8 character indexed by first byte. | |
1972 | * Illegal bytes are set one. */ | |
1973 | static const unsigned char utf8_bytes[256] = { | |
1974 | 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, | |
1975 | 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, | |
1976 | 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, | |
1977 | 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, | |
1978 | 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, | |
1979 | 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, | |
1980 | 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, | |
1981 | 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, | |
1982 | }; | |
1983 | ||
1984 | /* Decode UTF-8 multi-byte representation into a unicode character. */ | |
1985 | static inline unsigned long | |
1986 | utf8_to_unicode(const char *string, size_t length) | |
1987 | { | |
1988 | unsigned long unicode; | |
1989 | ||
1990 | switch (length) { | |
1991 | case 1: | |
1992 | unicode = string[0]; | |
1993 | break; | |
1994 | case 2: | |
1995 | unicode = (string[0] & 0x1f) << 6; | |
1996 | unicode += (string[1] & 0x3f); | |
1997 | break; | |
1998 | case 3: | |
1999 | unicode = (string[0] & 0x0f) << 12; | |
2000 | unicode += ((string[1] & 0x3f) << 6); | |
2001 | unicode += (string[2] & 0x3f); | |
2002 | break; | |
2003 | case 4: | |
2004 | unicode = (string[0] & 0x0f) << 18; | |
2005 | unicode += ((string[1] & 0x3f) << 12); | |
2006 | unicode += ((string[2] & 0x3f) << 6); | |
2007 | unicode += (string[3] & 0x3f); | |
2008 | break; | |
2009 | case 5: | |
2010 | unicode = (string[0] & 0x0f) << 24; | |
2011 | unicode += ((string[1] & 0x3f) << 18); | |
2012 | unicode += ((string[2] & 0x3f) << 12); | |
2013 | unicode += ((string[3] & 0x3f) << 6); | |
2014 | unicode += (string[4] & 0x3f); | |
2015 | break; | |
68b6e0eb | 2016 | case 6: |
10e290ee JF |
2017 | unicode = (string[0] & 0x01) << 30; |
2018 | unicode += ((string[1] & 0x3f) << 24); | |
2019 | unicode += ((string[2] & 0x3f) << 18); | |
2020 | unicode += ((string[3] & 0x3f) << 12); | |
2021 | unicode += ((string[4] & 0x3f) << 6); | |
2022 | unicode += (string[5] & 0x3f); | |
2023 | break; | |
2024 | default: | |
2025 | die("Invalid unicode length"); | |
2026 | } | |
2027 | ||
2028 | /* Invalid characters could return the special 0xfffd value but NUL | |
2029 | * should be just as good. */ | |
2030 | return unicode > 0xffff ? 0 : unicode; | |
2031 | } | |
2032 | ||
2033 | /* Calculates how much of string can be shown within the given maximum width | |
2034 | * and sets trimmed parameter to non-zero value if all of string could not be | |
2035 | * shown. | |
2036 | * | |
2037 | * Additionally, adds to coloffset how many many columns to move to align with | |
2038 | * the expected position. Takes into account how multi-byte and double-width | |
2039 | * characters will effect the cursor position. | |
2040 | * | |
2041 | * Returns the number of bytes to output from string to satisfy max_width. */ | |
2042 | static size_t | |
2043 | utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed) | |
2044 | { | |
2045 | const char *start = string; | |
2046 | const char *end = strchr(string, '\0'); | |
2047 | size_t mbwidth = 0; | |
2048 | size_t width = 0; | |
2049 | ||
2050 | *trimmed = 0; | |
2051 | ||
2052 | while (string < end) { | |
2053 | int c = *(unsigned char *) string; | |
2054 | unsigned char bytes = utf8_bytes[c]; | |
2055 | size_t ucwidth; | |
2056 | unsigned long unicode; | |
2057 | ||
2058 | if (string + bytes > end) | |
2059 | break; | |
2060 | ||
2061 | /* Change representation to figure out whether | |
2062 | * it is a single- or double-width character. */ | |
2063 | ||
2064 | unicode = utf8_to_unicode(string, bytes); | |
2065 | /* FIXME: Graceful handling of invalid unicode character. */ | |
2066 | if (!unicode) | |
2067 | break; | |
2068 | ||
2069 | ucwidth = unicode_width(unicode); | |
2070 | width += ucwidth; | |
2071 | if (width > max_width) { | |
2072 | *trimmed = 1; | |
2073 | break; | |
2074 | } | |
2075 | ||
2076 | /* The column offset collects the differences between the | |
2077 | * number of bytes encoding a character and the number of | |
2078 | * columns will be used for rendering said character. | |
2079 | * | |
2080 | * So if some character A is encoded in 2 bytes, but will be | |
2081 | * represented on the screen using only 1 byte this will and up | |
2082 | * adding 1 to the multi-byte column offset. | |
2083 | * | |
2084 | * Assumes that no double-width character can be encoding in | |
2085 | * less than two bytes. */ | |
2086 | if (bytes > ucwidth) | |
2087 | mbwidth += bytes - ucwidth; | |
2088 | ||
2089 | string += bytes; | |
2090 | } | |
2091 | ||
2092 | *coloffset += mbwidth; | |
2093 | ||
2094 | return string - start; | |
2095 | } | |
2096 | ||
2097 | ||
2098 | /* | |
6b161b31 JF |
2099 | * Status management |
2100 | */ | |
2e8488b4 | 2101 | |
8855ada4 | 2102 | /* Whether or not the curses interface has been initialized. */ |
68b6e0eb | 2103 | static bool cursed = FALSE; |
8855ada4 | 2104 | |
6b161b31 JF |
2105 | /* The status window is used for polling keystrokes. */ |
2106 | static WINDOW *status_win; | |
4a2909a7 | 2107 | |
2e8488b4 | 2108 | /* Update status and title window. */ |
4a2909a7 JF |
2109 | static void |
2110 | report(const char *msg, ...) | |
2111 | { | |
6706b2ba JF |
2112 | static bool empty = TRUE; |
2113 | struct view *view = display[current_view]; | |
b76c2afc | 2114 | |
6706b2ba JF |
2115 | if (!empty || *msg) { |
2116 | va_list args; | |
4a2909a7 | 2117 | |
6706b2ba | 2118 | va_start(args, msg); |
4b76734f | 2119 | |
6706b2ba JF |
2120 | werase(status_win); |
2121 | wmove(status_win, 0, 0); | |
2122 | if (*msg) { | |
2123 | vwprintw(status_win, msg, args); | |
2124 | empty = FALSE; | |
2125 | } else { | |
2126 | empty = TRUE; | |
2127 | } | |
2128 | wrefresh(status_win); | |
b801d8b2 | 2129 | |
6706b2ba JF |
2130 | va_end(args); |
2131 | } | |
2132 | ||
2133 | update_view_title(view); | |
2134 | ||
2135 | /* Move the cursor to the right-most column of the cursor line. | |
2136 | * | |
2137 | * XXX: This could turn out to be a bit expensive, but it ensures that | |
2138 | * the cursor does not jump around. */ | |
2139 | if (view->lines) { | |
2140 | wmove(view->win, view->lineno - view->offset, view->width - 1); | |
2141 | wrefresh(view->win); | |
2142 | } | |
b801d8b2 JF |
2143 | } |
2144 | ||
6b161b31 JF |
2145 | /* Controls when nodelay should be in effect when polling user input. */ |
2146 | static void | |
1ba2ae4b | 2147 | set_nonblocking_input(bool loading) |
b801d8b2 | 2148 | { |
6706b2ba | 2149 | static unsigned int loading_views; |
b801d8b2 | 2150 | |
6706b2ba JF |
2151 | if ((loading == FALSE && loading_views-- == 1) || |
2152 | (loading == TRUE && loading_views++ == 0)) | |
1ba2ae4b | 2153 | nodelay(status_win, loading); |
6b161b31 JF |
2154 | } |
2155 | ||
2156 | static void | |
2157 | init_display(void) | |
2158 | { | |
2159 | int x, y; | |
b76c2afc | 2160 | |
6908bdbd JF |
2161 | /* Initialize the curses library */ |
2162 | if (isatty(STDIN_FILENO)) { | |
8855ada4 | 2163 | cursed = !!initscr(); |
6908bdbd JF |
2164 | } else { |
2165 | /* Leave stdin and stdout alone when acting as a pager. */ | |
2166 | FILE *io = fopen("/dev/tty", "r+"); | |
2167 | ||
8855ada4 | 2168 | cursed = !!newterm(NULL, io, io); |
6908bdbd JF |
2169 | } |
2170 | ||
8855ada4 JF |
2171 | if (!cursed) |
2172 | die("Failed to initialize curses"); | |
2173 | ||
2e8488b4 JF |
2174 | nonl(); /* Tell curses not to do NL->CR/NL on output */ |
2175 | cbreak(); /* Take input chars one at a time, no wait for \n */ | |
2176 | noecho(); /* Don't echo input */ | |
b801d8b2 | 2177 | leaveok(stdscr, TRUE); |
b801d8b2 JF |
2178 | |
2179 | if (has_colors()) | |
2180 | init_colors(); | |
2181 | ||
2182 | getmaxyx(stdscr, y, x); | |
2183 | status_win = newwin(1, 0, y - 1, 0); | |
2184 | if (!status_win) | |
2185 | die("Failed to create status window"); | |
2186 | ||
2187 | /* Enable keyboard mapping */ | |
2188 | keypad(status_win, TRUE); | |
78c70acd | 2189 | wbkgdset(status_win, get_line_attr(LINE_STATUS)); |
6b161b31 JF |
2190 | } |
2191 | ||
c34d9c9f JF |
2192 | |
2193 | /* | |
2194 | * Repository references | |
2195 | */ | |
2196 | ||
2197 | static struct ref *refs; | |
3a91b75e | 2198 | static size_t refs_size; |
c34d9c9f JF |
2199 | |
2200 | static struct ref ** | |
2201 | get_refs(char *id) | |
2202 | { | |
2203 | struct ref **id_refs = NULL; | |
2204 | size_t id_refs_size = 0; | |
2205 | size_t i; | |
2206 | ||
2207 | for (i = 0; i < refs_size; i++) { | |
2208 | struct ref **tmp; | |
2209 | ||
2210 | if (strcmp(id, refs[i].id)) | |
2211 | continue; | |
2212 | ||
2213 | tmp = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs)); | |
2214 | if (!tmp) { | |
2215 | if (id_refs) | |
2216 | free(id_refs); | |
2217 | return NULL; | |
2218 | } | |
2219 | ||
2220 | id_refs = tmp; | |
3af8774e | 2221 | if (id_refs_size > 0) |
c34d9c9f | 2222 | id_refs[id_refs_size - 1]->next = 1; |
3af8774e JF |
2223 | id_refs[id_refs_size] = &refs[i]; |
2224 | ||
2225 | /* XXX: The properties of the commit chains ensures that we can | |
2226 | * safely modify the shared ref. The repo references will | |
2227 | * always be similar for the same id. */ | |
2228 | id_refs[id_refs_size]->next = 0; | |
2229 | id_refs_size++; | |
c34d9c9f JF |
2230 | } |
2231 | ||
2232 | return id_refs; | |
2233 | } | |
2234 | ||
2235 | static int | |
2236 | load_refs(void) | |
2237 | { | |
4685845e TH |
2238 | const char *cmd_env = getenv("TIG_LS_REMOTE"); |
2239 | const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE; | |
c34d9c9f JF |
2240 | FILE *pipe = popen(cmd, "r"); |
2241 | char buffer[BUFSIZ]; | |
2242 | char *line; | |
2243 | ||
2244 | if (!pipe) | |
2245 | return ERR; | |
2246 | ||
2247 | while ((line = fgets(buffer, sizeof(buffer), pipe))) { | |
2248 | char *name = strchr(line, '\t'); | |
2249 | struct ref *ref; | |
2250 | int namelen; | |
2251 | bool tag = FALSE; | |
6734f6b9 | 2252 | bool tag_commit = FALSE; |
c34d9c9f JF |
2253 | |
2254 | if (!name) | |
2255 | continue; | |
2256 | ||
2257 | *name++ = 0; | |
2258 | namelen = strlen(name) - 1; | |
6706b2ba JF |
2259 | |
2260 | /* Commits referenced by tags has "^{}" appended. */ | |
c34d9c9f JF |
2261 | if (name[namelen - 1] == '}') { |
2262 | while (namelen > 0 && name[namelen] != '^') | |
2263 | namelen--; | |
6734f6b9 JF |
2264 | if (namelen > 0) |
2265 | tag_commit = TRUE; | |
c34d9c9f JF |
2266 | } |
2267 | name[namelen] = 0; | |
2268 | ||
2269 | if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) { | |
6734f6b9 JF |
2270 | if (!tag_commit) |
2271 | continue; | |
c34d9c9f JF |
2272 | name += STRING_SIZE("refs/tags/"); |
2273 | tag = TRUE; | |
3af8774e JF |
2274 | |
2275 | } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) { | |
2276 | name += STRING_SIZE("refs/heads/"); | |
2277 | ||
2278 | } else if (!strcmp(name, "HEAD")) { | |
2279 | continue; | |
c34d9c9f JF |
2280 | } |
2281 | ||
2282 | refs = realloc(refs, sizeof(*refs) * (refs_size + 1)); | |
2283 | if (!refs) | |
2284 | return ERR; | |
2285 | ||
2286 | ref = &refs[refs_size++]; | |
2287 | ref->tag = tag; | |
2288 | ref->name = strdup(name); | |
2289 | if (!ref->name) | |
2290 | return ERR; | |
2291 | ||
2292 | string_copy(ref->id, line); | |
2293 | } | |
2294 | ||
2295 | if (ferror(pipe)) | |
2296 | return ERR; | |
2297 | ||
2298 | pclose(pipe); | |
2299 | ||
2300 | return OK; | |
2301 | } | |
2302 | ||
6b161b31 JF |
2303 | /* |
2304 | * Main | |
2305 | */ | |
2306 | ||
b5c9e67f TH |
2307 | #if __GNUC__ >= 3 |
2308 | #define __NORETURN __attribute__((__noreturn__)) | |
2309 | #else | |
2310 | #define __NORETURN | |
2311 | #endif | |
2312 | ||
2313 | static void __NORETURN | |
6b161b31 JF |
2314 | quit(int sig) |
2315 | { | |
8855ada4 JF |
2316 | /* XXX: Restore tty modes and let the OS cleanup the rest! */ |
2317 | if (cursed) | |
2318 | endwin(); | |
6b161b31 JF |
2319 | exit(0); |
2320 | } | |
2321 | ||
c6704a4e JF |
2322 | static void __NORETURN |
2323 | die(const char *err, ...) | |
6b161b31 JF |
2324 | { |
2325 | va_list args; | |
2326 | ||
2327 | endwin(); | |
2328 | ||
2329 | va_start(args, err); | |
2330 | fputs("tig: ", stderr); | |
2331 | vfprintf(stderr, err, args); | |
2332 | fputs("\n", stderr); | |
2333 | va_end(args); | |
2334 | ||
2335 | exit(1); | |
2336 | } | |
2337 | ||
2338 | int | |
2339 | main(int argc, char *argv[]) | |
2340 | { | |
1ba2ae4b | 2341 | struct view *view; |
6b161b31 | 2342 | enum request request; |
1ba2ae4b | 2343 | size_t i; |
6b161b31 JF |
2344 | |
2345 | signal(SIGINT, quit); | |
2346 | ||
8855ada4 | 2347 | if (!parse_options(argc, argv)) |
6b161b31 JF |
2348 | return 0; |
2349 | ||
c34d9c9f JF |
2350 | if (load_refs() == ERR) |
2351 | die("Failed to load refs."); | |
2352 | ||
7bb55251 JF |
2353 | /* Require a git repository unless when running in pager mode. */ |
2354 | if (refs_size == 0 && opt_request != REQ_VIEW_PAGER) | |
2355 | die("Not a git repository"); | |
2356 | ||
1ba2ae4b JF |
2357 | for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++) |
2358 | view->cmd_env = getenv(view->cmd_env); | |
2359 | ||
6b161b31 JF |
2360 | request = opt_request; |
2361 | ||
2362 | init_display(); | |
b801d8b2 JF |
2363 | |
2364 | while (view_driver(display[current_view], request)) { | |
6b161b31 | 2365 | int key; |
b801d8b2 JF |
2366 | int i; |
2367 | ||
6b161b31 JF |
2368 | foreach_view (view, i) |
2369 | update_view(view); | |
b801d8b2 JF |
2370 | |
2371 | /* Refresh, accept single keystroke of input */ | |
6b161b31 JF |
2372 | key = wgetch(status_win); |
2373 | request = get_request(key); | |
03a93dbb | 2374 | |
6706b2ba | 2375 | /* Some low-level request handling. This keeps access to |
fac7db6c JF |
2376 | * status_win restricted. */ |
2377 | switch (request) { | |
2378 | case REQ_PROMPT: | |
6908bdbd JF |
2379 | report(":"); |
2380 | /* Temporarily switch to line-oriented and echoed | |
2381 | * input. */ | |
03a93dbb JF |
2382 | nocbreak(); |
2383 | echo(); | |
49f2b43f JF |
2384 | |
2385 | if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) { | |
2386 | memcpy(opt_cmd, "git ", 4); | |
2387 | opt_request = REQ_VIEW_PAGER; | |
2388 | } else { | |
2389 | request = ERR; | |
2390 | } | |
2391 | ||
6908bdbd JF |
2392 | noecho(); |
2393 | cbreak(); | |
fac7db6c JF |
2394 | break; |
2395 | ||
2396 | case REQ_SCREEN_RESIZE: | |
2397 | { | |
2398 | int height, width; | |
2399 | ||
2400 | getmaxyx(stdscr, height, width); | |
2401 | ||
2402 | /* Resize the status view and let the view driver take | |
2403 | * care of resizing the displayed views. */ | |
2404 | wresize(status_win, 1, width); | |
2405 | mvwin(status_win, height - 1, 0); | |
2406 | wrefresh(status_win); | |
2407 | break; | |
2408 | } | |
2409 | default: | |
2410 | break; | |
03a93dbb | 2411 | } |
b801d8b2 JF |
2412 | } |
2413 | ||
2414 | quit(0); | |
2415 | ||
2416 | return 0; | |
2417 | } | |
2418 | ||
2419 | /** | |
0721c53a | 2420 | * [[refspec]] |
3a11b38f JF |
2421 | * Revision specification |
2422 | * ---------------------- | |
0721c53a | 2423 | * This section describes various ways to specify what revisions to display |
3a11b38f JF |
2424 | * or otherwise limit the view to. tig(1) does not itself parse the described |
2425 | * revision options so refer to the relevant git man pages for futher | |
2426 | * information. Relevant man pages besides git-log(1) are git-diff(1) and | |
2427 | * git-rev-list(1). | |
468876c9 | 2428 | * |
3a11b38f JF |
2429 | * You can tune the interaction with git by making use of the options |
2430 | * explained in this section. For example, by configuring the environment | |
2431 | * variables described in the <<view-commands, "View commands">> section. | |
2432 | * | |
2433 | * Limit by path name | |
2434 | * ~~~~~~~~~~~~~~~~~~ | |
ab46037d JF |
2435 | * If you are interested only in those revisions that made changes to a |
2436 | * specific file (or even several files) list the files like this: | |
2437 | * | |
c760e6ba | 2438 | * $ tig log Makefile README |
ab46037d JF |
2439 | * |
2440 | * To avoid ambiguity with repository references such as tag name, be sure | |
2441 | * to separate file names from other git options using "\--". So if you | |
2442 | * have a file named 'master' it will clash with the reference named | |
2443 | * 'master', and thus you will have to use: | |
2444 | * | |
1b4b0bd9 | 2445 | * $ tig log -- master |
ab46037d JF |
2446 | * |
2447 | * NOTE: For the main view, avoiding ambiguity will in some cases require | |
2448 | * you to specify two "\--" options. The first will make tig(1) stop | |
2449 | * option processing and the latter will be passed to git log. | |
2450 | * | |
468876c9 JF |
2451 | * Limit by date or number |
2452 | * ~~~~~~~~~~~~~~~~~~~~~~~ | |
2453 | * To speed up interaction with git, you can limit the amount of commits | |
2454 | * to show both for the log and main view. Either limit by date using | |
2455 | * e.g. `--since=1.month` or limit by the number of commits using `-n400`. | |
2456 | * | |
3a11b38f JF |
2457 | * If you are only interested in changed that happened between two dates |
2458 | * you can use: | |
2459 | * | |
c760e6ba | 2460 | * $ tig -- --after="May 5th" --before="2006-05-16 15:44" |
468876c9 | 2461 | * |
c760e6ba JF |
2462 | * NOTE: If you want to avoid having to quote dates containing spaces you |
2463 | * can use "." instead, e.g. `--after=May.5th`. | |
3a11b38f JF |
2464 | * |
2465 | * Limiting by commit ranges | |
2466 | * ~~~~~~~~~~~~~~~~~~~~~~~~~ | |
468876c9 JF |
2467 | * Alternatively, commits can be limited to a specific range, such as |
2468 | * "all commits between 'tag-1.0' and 'tag-2.0'". For example: | |
2469 | * | |
2470 | * $ tig log tag-1.0..tag-2.0 | |
2471 | * | |
2472 | * This way of commit limiting makes it trivial to only browse the commits | |
2473 | * which haven't been pushed to a remote branch. Assuming 'origin' is your | |
2474 | * upstream remote branch, using: | |
2475 | * | |
2476 | * $ tig log origin..HEAD | |
2477 | * | |
2478 | * will list what will be pushed to the remote branch. Optionally, the ending | |
2479 | * 'HEAD' can be left out since it is implied. | |
2480 | * | |
2481 | * Limiting by reachability | |
2482 | * ~~~~~~~~~~~~~~~~~~~~~~~~ | |
2483 | * Git interprets the range specifier "tag-1.0..tag-2.0" as | |
2484 | * "all commits reachable from 'tag-2.0' but not from 'tag-1.0'". | |
3a11b38f JF |
2485 | * Where reachability refers to what commits are ancestors (or part of the |
2486 | * history) of the branch or tagged revision in question. | |
2487 | * | |
468876c9 JF |
2488 | * If you prefer to specify which commit to preview in this way use the |
2489 | * following: | |
2490 | * | |
2491 | * $ tig log tag-2.0 ^tag-1.0 | |
2492 | * | |
57bdf034 JF |
2493 | * You can think of '^' as a negation operator. Using this alternate syntax, |
2494 | * it is possible to further prune commits by specifying multiple branch | |
2495 | * cut offs. | |
468876c9 | 2496 | * |
3a11b38f JF |
2497 | * Combining revisions specification |
2498 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
2499 | * Revisions options can to some degree be combined, which makes it possible | |
2500 | * to say "show at most 20 commits from within the last month that changed | |
2501 | * files under the Documentation/ directory." | |
2502 | * | |
2503 | * $ tig -- --since=1.month -n20 -- Documentation/ | |
2504 | * | |
2505 | * Examining all repository references | |
2506 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
2507 | * In some cases, it can be useful to query changes across all references | |
2508 | * in a repository. An example is to ask "did any line of development in | |
2509 | * this repository change a particular file within the last week". This | |
2510 | * can be accomplished using: | |
2511 | * | |
2512 | * $ tig -- --all --since=1.week -- Makefile | |
2513 | * | |
6706b2ba JF |
2514 | * BUGS |
2515 | * ---- | |
2516 | * Known bugs and problems: | |
2517 | * | |
10e290ee JF |
2518 | * - In it's current state tig is pretty much UTF-8 only. |
2519 | * | |
6706b2ba | 2520 | * - If the screen width is very small the main view can draw |
468876c9 JF |
2521 | * outside the current view causing bad wrapping. Same goes |
2522 | * for title and status windows. | |
6706b2ba | 2523 | * |
4c6fabc2 JF |
2524 | * TODO |
2525 | * ---- | |
2526 | * Features that should be explored. | |
2527 | * | |
fac7db6c | 2528 | * - Searching. |
4c6fabc2 JF |
2529 | * |
2530 | * - Locale support. | |
2531 | * | |
b801d8b2 JF |
2532 | * COPYRIGHT |
2533 | * --------- | |
4a2909a7 | 2534 | * Copyright (c) Jonas Fonseca <fonseca@diku.dk>, 2006 |
b801d8b2 JF |
2535 | * |
2536 | * This program is free software; you can redistribute it and/or modify | |
2537 | * it under the terms of the GNU General Public License as published by | |
2538 | * the Free Software Foundation; either version 2 of the License, or | |
2539 | * (at your option) any later version. | |
2540 | * | |
2541 | * SEE ALSO | |
2542 | * -------- | |
4c6fabc2 | 2543 | * [verse] |
b801d8b2 JF |
2544 | * link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)], |
2545 | * link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)] | |
4c6fabc2 | 2546 | * gitk(1): git repository browser written using tcl/tk, |
c6704a4e | 2547 | * qgit(1): git repository browser written using c++/Qt, |
4c6fabc2 | 2548 | * gitview(1): git repository browser written using python/gtk. |
b801d8b2 | 2549 | **/ |