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 | * ----------- | |
23 | * Browse changes in a git repository. | |
b801d8b2 JF |
24 | **/ |
25 | ||
b76c2afc JF |
26 | #ifndef VERSION |
27 | #define VERSION "tig-0.1" | |
28 | #endif | |
29 | ||
8855ada4 JF |
30 | #ifndef DEBUG |
31 | #define NDEBUG | |
32 | #endif | |
33 | ||
22f66b0a | 34 | #include <assert.h> |
4c6fabc2 | 35 | #include <errno.h> |
22f66b0a JF |
36 | #include <ctype.h> |
37 | #include <signal.h> | |
b801d8b2 | 38 | #include <stdarg.h> |
b801d8b2 | 39 | #include <stdio.h> |
22f66b0a | 40 | #include <stdlib.h> |
b801d8b2 | 41 | #include <string.h> |
6908bdbd | 42 | #include <unistd.h> |
b76c2afc | 43 | #include <time.h> |
b801d8b2 JF |
44 | |
45 | #include <curses.h> | |
b801d8b2 JF |
46 | |
47 | static void die(const char *err, ...); | |
48 | static void report(const char *msg, ...); | |
6b161b31 JF |
49 | static void set_nonblocking_input(int boolean); |
50 | ||
51 | #define ABS(x) ((x) >= 0 ? (x) : -(x)) | |
52 | #define MIN(x, y) ((x) < (y) ? (x) : (y)) | |
53 | ||
54 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) | |
55 | #define STRING_SIZE(x) (sizeof(x) - 1) | |
b76c2afc | 56 | |
2e8488b4 JF |
57 | #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */ |
58 | #define SIZEOF_CMD 1024 /* Size of command buffer. */ | |
b801d8b2 | 59 | |
82e78006 JF |
60 | /* This color name can be used to refer to the default term colors. */ |
61 | #define COLOR_DEFAULT (-1) | |
78c70acd | 62 | |
82e78006 | 63 | /* The format and size of the date column in the main view. */ |
4c6fabc2 | 64 | #define DATE_FORMAT "%Y-%m-%d %H:%M" |
6b161b31 | 65 | #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ") |
4c6fabc2 | 66 | |
a28bcc22 | 67 | /* The default interval between line numbers. */ |
4a2909a7 | 68 | #define NUMBER_INTERVAL 1 |
82e78006 | 69 | |
a28bcc22 JF |
70 | #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3) |
71 | ||
8855ada4 | 72 | /* Some ascii-shorthands fitted into the ncurses namespace. */ |
a28bcc22 JF |
73 | #define KEY_TAB '\t' |
74 | #define KEY_RETURN '\r' | |
4a2909a7 JF |
75 | #define KEY_ESC 27 |
76 | ||
a28bcc22 | 77 | /* User action requests. */ |
4a2909a7 | 78 | enum request { |
a28bcc22 JF |
79 | /* Offset all requests to avoid conflicts with ncurses getch values. */ |
80 | REQ_OFFSET = KEY_MAX + 1, | |
81 | ||
4a2909a7 | 82 | /* XXX: Keep the view request first and in sync with views[]. */ |
2e8488b4 | 83 | REQ_VIEW_MAIN, |
4a2909a7 JF |
84 | REQ_VIEW_DIFF, |
85 | REQ_VIEW_LOG, | |
2e8488b4 | 86 | REQ_VIEW_HELP, |
6908bdbd | 87 | REQ_VIEW_PAGER, |
4a2909a7 | 88 | |
6b161b31 | 89 | REQ_ENTER, |
03a93dbb JF |
90 | REQ_QUIT, |
91 | REQ_PROMPT, | |
4a2909a7 JF |
92 | REQ_SCREEN_REDRAW, |
93 | REQ_SCREEN_UPDATE, | |
03a93dbb JF |
94 | REQ_SHOW_VERSION, |
95 | REQ_STOP_LOADING, | |
4a2909a7 | 96 | REQ_TOGGLE_LINE_NUMBERS, |
03a93dbb | 97 | REQ_VIEW_NEXT, |
4a2909a7 JF |
98 | |
99 | REQ_MOVE_UP, | |
100 | REQ_MOVE_DOWN, | |
101 | REQ_MOVE_PAGE_UP, | |
102 | REQ_MOVE_PAGE_DOWN, | |
103 | REQ_MOVE_FIRST_LINE, | |
104 | REQ_MOVE_LAST_LINE, | |
105 | ||
106 | REQ_SCROLL_LINE_UP, | |
107 | REQ_SCROLL_LINE_DOWN, | |
108 | REQ_SCROLL_PAGE_UP, | |
109 | REQ_SCROLL_PAGE_DOWN, | |
110 | }; | |
111 | ||
4c6fabc2 | 112 | struct commit { |
a28bcc22 | 113 | char id[41]; /* SHA1 ID. */ |
6b161b31 | 114 | char title[75]; /* The first line of the commit message. */ |
a28bcc22 JF |
115 | char author[75]; /* The author of the commit. */ |
116 | struct tm time; /* Date from the author ident. */ | |
4c6fabc2 JF |
117 | }; |
118 | ||
03a93dbb JF |
119 | /* |
120 | * String helpers | |
121 | */ | |
78c70acd | 122 | |
82e78006 JF |
123 | static inline void |
124 | string_ncopy(char *dst, char *src, int dstlen) | |
125 | { | |
126 | strncpy(dst, src, dstlen - 1); | |
127 | dst[dstlen - 1] = 0; | |
03a93dbb | 128 | |
82e78006 JF |
129 | } |
130 | ||
131 | /* Shorthand for safely copying into a fixed buffer. */ | |
132 | #define string_copy(dst, src) \ | |
133 | string_ncopy(dst, src, sizeof(dst)) | |
134 | ||
03a93dbb JF |
135 | /* Shell quoting |
136 | * | |
137 | * NOTE: The following is a slightly modified copy of the git project's shell | |
138 | * quoting routines found in the quote.c file. | |
139 | * | |
140 | * Help to copy the thing properly quoted for the shell safety. any single | |
141 | * quote is replaced with '\'', any exclamation point is replaced with '\!', | |
142 | * and the whole thing is enclosed in a | |
143 | * | |
144 | * E.g. | |
145 | * original sq_quote result | |
146 | * name ==> name ==> 'name' | |
147 | * a b ==> a b ==> 'a b' | |
148 | * a'b ==> a'\''b ==> 'a'\''b' | |
149 | * a!b ==> a'\!'b ==> 'a'\!'b' | |
150 | */ | |
151 | ||
152 | static size_t | |
153 | sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src) | |
154 | { | |
155 | char c; | |
156 | ||
157 | #define BUFPUT(x) ( (bufsize < SIZEOF_CMD) && (buf[bufsize++] = (x)) ) | |
158 | ||
159 | BUFPUT('\''); | |
160 | while ((c = *src++)) { | |
161 | if (c == '\'' || c == '!') { | |
162 | BUFPUT('\''); | |
163 | BUFPUT('\\'); | |
164 | BUFPUT(c); | |
165 | BUFPUT('\''); | |
166 | } else { | |
167 | BUFPUT(c); | |
168 | } | |
169 | } | |
170 | BUFPUT('\''); | |
171 | ||
172 | return bufsize; | |
173 | } | |
174 | ||
82e78006 | 175 | |
b76c2afc JF |
176 | /** |
177 | * OPTIONS | |
178 | * ------- | |
179 | **/ | |
180 | ||
2e8488b4 JF |
181 | static int opt_line_number = FALSE; |
182 | static int opt_num_interval = NUMBER_INTERVAL; | |
6b161b31 | 183 | static enum request opt_request = REQ_VIEW_MAIN; |
03a93dbb | 184 | static char opt_cmd[SIZEOF_CMD] = ""; |
6908bdbd | 185 | static FILE *opt_pipe = NULL; |
b76c2afc | 186 | |
b76c2afc | 187 | /* Returns the index of log or diff command or -1 to exit. */ |
8855ada4 | 188 | static bool |
b76c2afc JF |
189 | parse_options(int argc, char *argv[]) |
190 | { | |
191 | int i; | |
192 | ||
193 | for (i = 1; i < argc; i++) { | |
194 | char *opt = argv[i]; | |
195 | ||
196 | /** | |
b76c2afc JF |
197 | * -l:: |
198 | * Start up in log view. | |
199 | **/ | |
6b161b31 | 200 | if (!strcmp(opt, "-l")) { |
4a2909a7 | 201 | opt_request = REQ_VIEW_LOG; |
6b161b31 JF |
202 | continue; |
203 | } | |
b76c2afc JF |
204 | |
205 | /** | |
206 | * -d:: | |
207 | * Start up in diff view. | |
208 | **/ | |
6b161b31 | 209 | if (!strcmp(opt, "-d")) { |
4a2909a7 | 210 | opt_request = REQ_VIEW_DIFF; |
6b161b31 JF |
211 | continue; |
212 | } | |
b76c2afc JF |
213 | |
214 | /** | |
2e8488b4 | 215 | * -n[INTERVAL], --line-number[=INTERVAL]:: |
b76c2afc | 216 | * Prefix line numbers in log and diff view. |
2e8488b4 | 217 | * Optionally, with interval different than each line. |
b76c2afc | 218 | **/ |
6b161b31 | 219 | if (!strncmp(opt, "-n", 2) || |
8855ada4 | 220 | !strncmp(opt, "--line-number", 13)) { |
2e8488b4 JF |
221 | char *num = opt; |
222 | ||
223 | if (opt[1] == 'n') { | |
224 | num = opt + 2; | |
225 | ||
226 | } else if (opt[STRING_SIZE("--line-number")] == '=') { | |
227 | num = opt + STRING_SIZE("--line-number="); | |
228 | } | |
229 | ||
230 | if (isdigit(*num)) | |
231 | opt_num_interval = atoi(num); | |
232 | ||
6b161b31 JF |
233 | opt_line_number = TRUE; |
234 | continue; | |
235 | } | |
b76c2afc JF |
236 | |
237 | /** | |
238 | * -v, --version:: | |
239 | * Show version and exit. | |
240 | **/ | |
6b161b31 | 241 | if (!strcmp(opt, "-v") || |
8855ada4 | 242 | !strcmp(opt, "--version")) { |
b76c2afc | 243 | printf("tig version %s\n", VERSION); |
8855ada4 | 244 | return FALSE; |
6b161b31 | 245 | } |
b76c2afc JF |
246 | |
247 | /** | |
03a93dbb | 248 | * \--:: |
889cb462 | 249 | * End of tig(1) options. Useful when specifying commands |
03a93dbb JF |
250 | * for the main view. Example: |
251 | * | |
889cb462 | 252 | * $ tig -- --since=1.month |
b76c2afc | 253 | **/ |
6908bdbd JF |
254 | if (!strcmp(opt, "--")) { |
255 | i++; | |
256 | break; | |
257 | } | |
03a93dbb | 258 | |
8855ada4 JF |
259 | /** |
260 | * log [options]:: | |
261 | * Open log view using the given git log options. | |
262 | * | |
263 | * diff [options]:: | |
264 | * Open diff view using the given git diff options. | |
265 | * | |
266 | * show [options]:: | |
267 | * Open diff view using the given git show options. | |
268 | **/ | |
269 | if (!strcmp(opt, "log") || | |
270 | !strcmp(opt, "diff") || | |
271 | !strcmp(opt, "show")) { | |
272 | opt_request = opt[0] == 'l' | |
273 | ? REQ_VIEW_LOG : REQ_VIEW_DIFF; | |
274 | break; | |
275 | } | |
276 | ||
277 | /* Make stuff like: | |
889cb462 | 278 | * |
03a93dbb JF |
279 | * $ tig tag-1.0..HEAD |
280 | * | |
8855ada4 | 281 | * work. */ |
03a93dbb | 282 | if (opt[0] && opt[0] != '-') |
6908bdbd | 283 | break; |
6b161b31 JF |
284 | |
285 | die("unknown command '%s'", opt); | |
b76c2afc JF |
286 | } |
287 | ||
6908bdbd | 288 | if (!isatty(STDIN_FILENO)) { |
8855ada4 JF |
289 | /** |
290 | * Pager mode | |
291 | * ~~~~~~~~~~ | |
292 | * If stdin is a pipe, any log or diff options will be ignored and the | |
293 | * pager view will be opened loading data from stdin. The pager mode | |
294 | * can be used for colorizing output from various git commands. | |
295 | * | |
296 | * Example on how to colorize the output of git-show(1): | |
297 | * | |
298 | * $ git show | tig | |
299 | **/ | |
6908bdbd JF |
300 | opt_request = REQ_VIEW_PAGER; |
301 | opt_pipe = stdin; | |
302 | ||
303 | } else if (i < argc) { | |
304 | size_t buf_size; | |
305 | ||
8855ada4 JF |
306 | /** |
307 | * Git command options | |
308 | * ~~~~~~~~~~~~~~~~~~~ | |
8855ada4 JF |
309 | * All git command options specified on the command line will |
310 | * be passed to the given command and all will be shell quoted | |
311 | * before used. | |
312 | * | |
313 | * NOTE: It is possible to specify options even for the main | |
eb98559e | 314 | * view. If doing this you should not touch the `--pretty` |
8855ada4 JF |
315 | * option. |
316 | * | |
317 | * Example on how to open the log view and show both author and | |
318 | * committer information: | |
319 | * | |
320 | * $ tig log --pretty=fuller | |
321 | **/ | |
322 | ||
6908bdbd | 323 | if (opt_request == REQ_VIEW_MAIN) |
8855ada4 JF |
324 | /* XXX: This is vulnerable to the user overriding |
325 | * options required for the main view parser. */ | |
6908bdbd JF |
326 | string_copy(opt_cmd, "git log --stat --pretty=raw"); |
327 | else | |
328 | string_copy(opt_cmd, "git"); | |
329 | buf_size = strlen(opt_cmd); | |
330 | ||
331 | while (buf_size < sizeof(opt_cmd) && i < argc) { | |
332 | opt_cmd[buf_size++] = ' '; | |
333 | buf_size = sq_quote(opt_cmd, buf_size, argv[i++]); | |
334 | } | |
335 | ||
336 | if (buf_size >= sizeof(opt_cmd)) | |
337 | die("command too long"); | |
338 | ||
339 | opt_cmd[buf_size] = 0; | |
340 | ||
341 | } | |
342 | ||
8855ada4 | 343 | return TRUE; |
b76c2afc JF |
344 | } |
345 | ||
346 | ||
4a2909a7 JF |
347 | /** |
348 | * KEYS | |
349 | * ---- | |
4a2909a7 JF |
350 | **/ |
351 | ||
352 | #define HELP "(d)iff, (l)og, (m)ain, (q)uit, (v)ersion, (h)elp" | |
353 | ||
354 | struct keymap { | |
355 | int alias; | |
356 | int request; | |
357 | }; | |
358 | ||
359 | struct keymap keymap[] = { | |
6b161b31 JF |
360 | /** |
361 | * View switching | |
362 | * ~~~~~~~~~~~~~~ | |
363 | * d:: | |
364 | * Switch to diff view. | |
365 | * l:: | |
366 | * Switch to log view. | |
367 | * m:: | |
368 | * Switch to main view. | |
8855ada4 JF |
369 | * p:: |
370 | * Switch to pager view. | |
6b161b31 JF |
371 | * h:: |
372 | * Show man page. | |
373 | * Return:: | |
374 | * If in main view split the view | |
375 | * and show the diff in the bottom view. | |
03a93dbb JF |
376 | * Tab:: |
377 | * Switch to next view. | |
6b161b31 JF |
378 | **/ |
379 | { 'm', REQ_VIEW_MAIN }, | |
380 | { 'd', REQ_VIEW_DIFF }, | |
381 | { 'l', REQ_VIEW_LOG }, | |
8855ada4 | 382 | { 'p', REQ_VIEW_PAGER }, |
6b161b31 JF |
383 | { 'h', REQ_VIEW_HELP }, |
384 | ||
03a93dbb | 385 | { KEY_TAB, REQ_VIEW_NEXT }, |
6b161b31 JF |
386 | { KEY_RETURN, REQ_ENTER }, |
387 | ||
388 | /** | |
389 | * Cursor navigation | |
390 | * ~~~~~~~~~~~~~~~~~ | |
391 | * Up, k:: | |
392 | * Move curser one line up. | |
393 | * Down, j:: | |
394 | * Move cursor one line down. | |
395 | * Page Up:: | |
396 | * Move curser one page up. | |
397 | * Page Down:: | |
398 | * Move cursor one page down. | |
399 | * Home:: | |
400 | * Jump to first line. | |
401 | * End:: | |
402 | * Jump to last line. | |
403 | **/ | |
4a2909a7 JF |
404 | { KEY_UP, REQ_MOVE_UP }, |
405 | { 'k', REQ_MOVE_UP }, | |
406 | { KEY_DOWN, REQ_MOVE_DOWN }, | |
407 | { 'j', REQ_MOVE_DOWN }, | |
408 | { KEY_HOME, REQ_MOVE_FIRST_LINE }, | |
409 | { KEY_END, REQ_MOVE_LAST_LINE }, | |
410 | { KEY_NPAGE, REQ_MOVE_PAGE_DOWN }, | |
411 | { KEY_PPAGE, REQ_MOVE_PAGE_UP }, | |
412 | ||
6b161b31 JF |
413 | /** |
414 | * Scrolling | |
415 | * ~~~~~~~~~ | |
416 | * Insert:: | |
417 | * Scroll view one line up. | |
418 | * Delete:: | |
419 | * Scroll view one line down. | |
420 | * w:: | |
421 | * Scroll view one page up. | |
422 | * s:: | |
423 | * Scroll view one page down. | |
424 | **/ | |
a28bcc22 JF |
425 | { KEY_IC, REQ_SCROLL_LINE_UP }, |
426 | { KEY_DC, REQ_SCROLL_LINE_DOWN }, | |
427 | { 'w', REQ_SCROLL_PAGE_UP }, | |
428 | { 's', REQ_SCROLL_PAGE_DOWN }, | |
429 | ||
6b161b31 JF |
430 | /** |
431 | * Misc | |
432 | * ~~~~ | |
433 | * q, Escape:: | |
434 | * Quit | |
435 | * r:: | |
436 | * Redraw screen. | |
437 | * z:: | |
438 | * Stop all background loading. | |
439 | * v:: | |
440 | * Show version. | |
441 | * n:: | |
442 | * Toggle line numbers on/off. | |
03a93dbb | 443 | * ':':: |
8855ada4 JF |
444 | * Open prompt. This allows you to specify what git command to run. |
445 | * Example: | |
446 | * | |
447 | * :log -p | |
448 | * | |
6b161b31 | 449 | **/ |
4a2909a7 JF |
450 | { KEY_ESC, REQ_QUIT }, |
451 | { 'q', REQ_QUIT }, | |
452 | { 'z', REQ_STOP_LOADING }, | |
453 | { 'v', REQ_SHOW_VERSION }, | |
454 | { 'r', REQ_SCREEN_REDRAW }, | |
455 | { 'n', REQ_TOGGLE_LINE_NUMBERS }, | |
03a93dbb | 456 | { ':', REQ_PROMPT }, |
4a2909a7 JF |
457 | |
458 | /* wgetch() with nodelay() enabled returns ERR when there's no input. */ | |
459 | { ERR, REQ_SCREEN_UPDATE }, | |
460 | }; | |
461 | ||
6b161b31 JF |
462 | static enum request |
463 | get_request(int key) | |
4a2909a7 JF |
464 | { |
465 | int i; | |
466 | ||
467 | for (i = 0; i < ARRAY_SIZE(keymap); i++) | |
6b161b31 | 468 | if (keymap[i].alias == key) |
4a2909a7 JF |
469 | return keymap[i].request; |
470 | ||
6b161b31 | 471 | return (enum request) key; |
4a2909a7 JF |
472 | } |
473 | ||
474 | ||
b76c2afc JF |
475 | /* |
476 | * Line-oriented content detection. | |
6b161b31 JF |
477 | */ |
478 | ||
2e8488b4 | 479 | #define LINE_INFO \ |
6b161b31 JF |
480 | /* Line type String to match Foreground Background Attributes |
481 | * --------- --------------- ---------- ---------- ---------- */ \ | |
a28bcc22 JF |
482 | /* Diff markup */ \ |
483 | LINE(DIFF, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
8855ada4 | 484 | LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
a28bcc22 JF |
485 | LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
486 | LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
487 | LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \ | |
488 | LINE(DIFF_OLDMODE, "old mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
489 | LINE(DIFF_NEWMODE, "new mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
490 | LINE(DIFF_COPY, "copy ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
491 | LINE(DIFF_RENAME, "rename ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
492 | LINE(DIFF_SIM, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
493 | LINE(DIFF_DISSIM, "dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
494 | /* Pretty print commit header */ \ | |
6908bdbd | 495 | LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
8855ada4 | 496 | LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
6908bdbd JF |
497 | LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
498 | LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
8855ada4 JF |
499 | LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
500 | LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
a28bcc22 JF |
501 | /* Raw commit header */ \ |
502 | LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
503 | LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
504 | LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
8855ada4 | 505 | LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
a28bcc22 JF |
506 | LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
507 | /* Misc */ \ | |
508 | LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ | |
509 | LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \ | |
510 | /* UI colors */ \ | |
511 | LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \ | |
512 | LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \ | |
513 | LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
6b161b31 JF |
514 | LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \ |
515 | LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \ | |
a28bcc22 JF |
516 | LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
517 | LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ | |
518 | LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \ | |
519 | LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), | |
2e8488b4 | 520 | |
78c70acd | 521 | enum line_type { |
2e8488b4 JF |
522 | #define LINE(type, line, fg, bg, attr) \ |
523 | LINE_##type | |
524 | LINE_INFO | |
525 | #undef LINE | |
78c70acd JF |
526 | }; |
527 | ||
528 | struct line_info { | |
2e8488b4 JF |
529 | char *line; /* The start of line to match. */ |
530 | int linelen; /* Size of string to match. */ | |
531 | int fg, bg, attr; /* Color and text attributes for the lines. */ | |
78c70acd JF |
532 | }; |
533 | ||
2e8488b4 | 534 | static struct line_info line_info[] = { |
78c70acd | 535 | #define LINE(type, line, fg, bg, attr) \ |
a28bcc22 | 536 | { (line), STRING_SIZE(line), (fg), (bg), (attr) } |
2e8488b4 JF |
537 | LINE_INFO |
538 | #undef LINE | |
78c70acd JF |
539 | }; |
540 | ||
2e8488b4 JF |
541 | static enum line_type |
542 | get_line_type(char *line) | |
78c70acd JF |
543 | { |
544 | int linelen = strlen(line); | |
a28bcc22 | 545 | enum line_type type; |
78c70acd | 546 | |
a28bcc22 | 547 | for (type = 0; type < ARRAY_SIZE(line_info); type++) |
2e8488b4 | 548 | /* Case insensitive search matches Signed-off-by lines better. */ |
a28bcc22 JF |
549 | if (linelen >= line_info[type].linelen && |
550 | !strncasecmp(line_info[type].line, line, line_info[type].linelen)) | |
551 | return type; | |
78c70acd | 552 | |
2e8488b4 | 553 | return LINE_DEFAULT; |
78c70acd JF |
554 | } |
555 | ||
2e8488b4 | 556 | static inline int |
78c70acd JF |
557 | get_line_attr(enum line_type type) |
558 | { | |
2e8488b4 JF |
559 | assert(type < ARRAY_SIZE(line_info)); |
560 | return COLOR_PAIR(type) | line_info[type].attr; | |
78c70acd JF |
561 | } |
562 | ||
563 | static void | |
564 | init_colors(void) | |
565 | { | |
82e78006 JF |
566 | int default_bg = COLOR_BLACK; |
567 | int default_fg = COLOR_WHITE; | |
a28bcc22 | 568 | enum line_type type; |
78c70acd JF |
569 | |
570 | start_color(); | |
571 | ||
572 | if (use_default_colors() != ERR) { | |
82e78006 JF |
573 | default_bg = -1; |
574 | default_fg = -1; | |
78c70acd JF |
575 | } |
576 | ||
a28bcc22 JF |
577 | for (type = 0; type < ARRAY_SIZE(line_info); type++) { |
578 | struct line_info *info = &line_info[type]; | |
82e78006 JF |
579 | int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg; |
580 | int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg; | |
78c70acd | 581 | |
a28bcc22 | 582 | init_pair(type, fg, bg); |
78c70acd JF |
583 | } |
584 | } | |
585 | ||
586 | ||
b801d8b2 JF |
587 | /* |
588 | * Viewer | |
589 | */ | |
590 | ||
591 | struct view { | |
03a93dbb | 592 | const char *name; /* View name */ |
49f2b43f | 593 | const char *cmdfmt; /* Default command line format */ |
03a93dbb JF |
594 | char *id; /* Points to either of ref_{head,commit} */ |
595 | size_t objsize; /* Size of objects in the line index */ | |
6b161b31 JF |
596 | |
597 | struct view_ops { | |
8855ada4 | 598 | /* Draw one line; @lineno must be < view->height. */ |
6b161b31 | 599 | bool (*draw)(struct view *view, unsigned int lineno); |
8855ada4 | 600 | /* Read one line; updates view->line. */ |
6b161b31 | 601 | bool (*read)(struct view *view, char *line); |
8855ada4 | 602 | /* Depending on view, change display based on current line. */ |
6b161b31 JF |
603 | bool (*enter)(struct view *view); |
604 | } *ops; | |
22f66b0a | 605 | |
03a93dbb | 606 | char cmd[SIZEOF_CMD]; /* Command buffer */ |
49f2b43f JF |
607 | char ref[SIZEOF_REF]; /* Hovered commit reference */ |
608 | char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */ | |
2e8488b4 | 609 | |
8855ada4 JF |
610 | int height, width; /* The width and height of the main window */ |
611 | WINDOW *win; /* The main window */ | |
612 | WINDOW *title; /* The title window living below the main window */ | |
b801d8b2 JF |
613 | |
614 | /* Navigation */ | |
615 | unsigned long offset; /* Offset of the window top */ | |
616 | unsigned long lineno; /* Current line number */ | |
617 | ||
618 | /* Buffering */ | |
619 | unsigned long lines; /* Total number of lines */ | |
8855ada4 JF |
620 | void **line; /* Line index; each line contains user data */ |
621 | unsigned int digits; /* Number of digits in the lines member. */ | |
b801d8b2 JF |
622 | |
623 | /* Loading */ | |
624 | FILE *pipe; | |
2e8488b4 | 625 | time_t start_time; |
b801d8b2 JF |
626 | }; |
627 | ||
6b161b31 JF |
628 | static struct view_ops pager_ops; |
629 | static struct view_ops main_ops; | |
a28bcc22 | 630 | |
fd85fef1 | 631 | #define DIFF_CMD \ |
8855ada4 | 632 | "git show --patch-with-stat --find-copies-harder -B -C %s" |
b801d8b2 JF |
633 | |
634 | #define LOG_CMD \ | |
9d3f5834 | 635 | "git log --cc --stat -n100 %s" |
b801d8b2 | 636 | |
fd85fef1 JF |
637 | #define MAIN_CMD \ |
638 | "git log --stat --pretty=raw %s" | |
639 | ||
2e8488b4 JF |
640 | #define HELP_CMD \ |
641 | "man tig 2> /dev/null" | |
642 | ||
49f2b43f JF |
643 | char ref_head[SIZEOF_REF] = "HEAD"; |
644 | char ref_commit[SIZEOF_REF] = "HEAD"; | |
645 | ||
b801d8b2 | 646 | static struct view views[] = { |
6908bdbd JF |
647 | { "main", MAIN_CMD, ref_head, sizeof(struct commit), &main_ops }, |
648 | { "diff", DIFF_CMD, ref_commit, sizeof(char), &pager_ops }, | |
649 | { "log", LOG_CMD, ref_head, sizeof(char), &pager_ops }, | |
650 | { "help", HELP_CMD, ref_head, sizeof(char), &pager_ops }, | |
8855ada4 | 651 | { "pager", "", "static", sizeof(char), &pager_ops }, |
b801d8b2 JF |
652 | }; |
653 | ||
a28bcc22 JF |
654 | #define VIEW(req) (&views[(req) - REQ_OFFSET - 1]) |
655 | ||
4c6fabc2 | 656 | /* The display array of active views and the index of the current view. */ |
6b161b31 | 657 | static struct view *display[2]; |
4c6fabc2 | 658 | static unsigned int current_view; |
22f66b0a | 659 | |
b801d8b2 | 660 | #define foreach_view(view, i) \ |
6b161b31 | 661 | for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++) |
b801d8b2 | 662 | |
4c6fabc2 | 663 | |
b801d8b2 | 664 | static void |
82e78006 | 665 | redraw_view_from(struct view *view, int lineno) |
b801d8b2 | 666 | { |
82e78006 | 667 | assert(0 <= lineno && lineno < view->height); |
b801d8b2 | 668 | |
82e78006 | 669 | for (; lineno < view->height; lineno++) { |
6b161b31 | 670 | if (!view->ops->draw(view, lineno)) |
fd85fef1 | 671 | break; |
b801d8b2 JF |
672 | } |
673 | ||
674 | redrawwin(view->win); | |
675 | wrefresh(view->win); | |
676 | } | |
677 | ||
b76c2afc | 678 | static void |
82e78006 JF |
679 | redraw_view(struct view *view) |
680 | { | |
681 | wclear(view->win); | |
682 | redraw_view_from(view, 0); | |
683 | } | |
684 | ||
6b161b31 JF |
685 | static void |
686 | resize_display(void) | |
b76c2afc | 687 | { |
03a93dbb | 688 | int offset, i; |
6b161b31 JF |
689 | struct view *base = display[0]; |
690 | struct view *view = display[1] ? display[1] : display[0]; | |
b76c2afc | 691 | |
6b161b31 | 692 | /* Setup window dimensions */ |
b76c2afc | 693 | |
03a93dbb | 694 | getmaxyx(stdscr, base->height, base->width); |
b76c2afc | 695 | |
6b161b31 | 696 | /* Make room for the status window. */ |
03a93dbb | 697 | base->height -= 1; |
6b161b31 JF |
698 | |
699 | if (view != base) { | |
03a93dbb JF |
700 | /* Horizontal split. */ |
701 | view->width = base->width; | |
6b161b31 JF |
702 | view->height = SCALE_SPLIT_VIEW(base->height); |
703 | base->height -= view->height; | |
704 | ||
705 | /* Make room for the title bar. */ | |
706 | view->height -= 1; | |
707 | } | |
708 | ||
709 | /* Make room for the title bar. */ | |
710 | base->height -= 1; | |
711 | ||
712 | offset = 0; | |
713 | ||
714 | foreach_view (view, i) { | |
b76c2afc | 715 | if (!view->win) { |
6b161b31 JF |
716 | view->win = newwin(view->height, 0, offset, 0); |
717 | if (!view->win) | |
718 | die("Failed to create %s view", view->name); | |
719 | ||
720 | scrollok(view->win, TRUE); | |
721 | ||
722 | view->title = newwin(1, 0, offset + view->height, 0); | |
723 | if (!view->title) | |
724 | die("Failed to create title window"); | |
725 | ||
726 | } else { | |
727 | wresize(view->win, view->height, view->width); | |
728 | mvwin(view->win, offset, 0); | |
729 | mvwin(view->title, offset + view->height, 0); | |
730 | wrefresh(view->win); | |
a28bcc22 | 731 | } |
a28bcc22 | 732 | |
6b161b31 | 733 | offset += view->height + 1; |
b76c2afc | 734 | } |
6b161b31 | 735 | } |
b76c2afc | 736 | |
6b161b31 JF |
737 | static void |
738 | update_view_title(struct view *view) | |
739 | { | |
740 | if (view == display[current_view]) | |
741 | wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS)); | |
742 | else | |
743 | wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR)); | |
a28bcc22 | 744 | |
6b161b31 JF |
745 | werase(view->title); |
746 | wmove(view->title, 0, 0); | |
b76c2afc | 747 | |
6b161b31 | 748 | /* [main] ref: 334b506... - commit 6 of 4383 (0%) */ |
6908bdbd JF |
749 | |
750 | if (*view->ref) | |
751 | wprintw(view->title, "[%s] ref: %s", view->name, view->ref); | |
752 | else | |
753 | wprintw(view->title, "[%s]", view->name); | |
754 | ||
6b161b31 JF |
755 | if (view->lines) { |
756 | char *type = view == VIEW(REQ_VIEW_MAIN) ? "commit" : "line"; | |
757 | ||
758 | wprintw(view->title, " - %s %d of %d (%d%%)", | |
759 | type, | |
760 | view->lineno + 1, | |
761 | view->lines, | |
762 | (view->lineno + 1) * 100 / view->lines); | |
763 | } | |
764 | ||
765 | wrefresh(view->title); | |
766 | } | |
78c70acd | 767 | |
2e8488b4 JF |
768 | /* |
769 | * Navigation | |
770 | */ | |
771 | ||
4a2909a7 | 772 | /* Scrolling backend */ |
b801d8b2 | 773 | static void |
4a2909a7 | 774 | do_scroll_view(struct view *view, int lines) |
b801d8b2 | 775 | { |
fd85fef1 JF |
776 | /* The rendering expects the new offset. */ |
777 | view->offset += lines; | |
778 | ||
779 | assert(0 <= view->offset && view->offset < view->lines); | |
780 | assert(lines); | |
b801d8b2 | 781 | |
82e78006 | 782 | /* Redraw the whole screen if scrolling is pointless. */ |
4c6fabc2 | 783 | if (view->height < ABS(lines)) { |
b76c2afc JF |
784 | redraw_view(view); |
785 | ||
786 | } else { | |
22f66b0a | 787 | int line = lines > 0 ? view->height - lines : 0; |
82e78006 | 788 | int end = line + ABS(lines); |
fd85fef1 JF |
789 | |
790 | wscrl(view->win, lines); | |
791 | ||
22f66b0a | 792 | for (; line < end; line++) { |
6b161b31 | 793 | if (!view->ops->draw(view, line)) |
fd85fef1 JF |
794 | break; |
795 | } | |
796 | } | |
797 | ||
798 | /* Move current line into the view. */ | |
799 | if (view->lineno < view->offset) { | |
800 | view->lineno = view->offset; | |
6b161b31 | 801 | view->ops->draw(view, 0); |
fd85fef1 JF |
802 | |
803 | } else if (view->lineno >= view->offset + view->height) { | |
804 | view->lineno = view->offset + view->height - 1; | |
6b161b31 | 805 | view->ops->draw(view, view->lineno - view->offset); |
fd85fef1 JF |
806 | } |
807 | ||
4c6fabc2 | 808 | assert(view->offset <= view->lineno && view->lineno < view->lines); |
fd85fef1 JF |
809 | |
810 | redrawwin(view->win); | |
811 | wrefresh(view->win); | |
9d3f5834 | 812 | report(""); |
fd85fef1 | 813 | } |
78c70acd | 814 | |
4a2909a7 | 815 | /* Scroll frontend */ |
fd85fef1 | 816 | static void |
6b161b31 | 817 | scroll_view(struct view *view, enum request request) |
fd85fef1 JF |
818 | { |
819 | int lines = 1; | |
b801d8b2 JF |
820 | |
821 | switch (request) { | |
4a2909a7 | 822 | case REQ_SCROLL_PAGE_DOWN: |
fd85fef1 | 823 | lines = view->height; |
4a2909a7 | 824 | case REQ_SCROLL_LINE_DOWN: |
b801d8b2 | 825 | if (view->offset + lines > view->lines) |
bde3653a | 826 | lines = view->lines - view->offset; |
b801d8b2 | 827 | |
fd85fef1 | 828 | if (lines == 0 || view->offset + view->height >= view->lines) { |
eb98559e | 829 | report("Cannot scroll beyond the last line"); |
b801d8b2 JF |
830 | return; |
831 | } | |
832 | break; | |
833 | ||
4a2909a7 | 834 | case REQ_SCROLL_PAGE_UP: |
fd85fef1 | 835 | lines = view->height; |
4a2909a7 | 836 | case REQ_SCROLL_LINE_UP: |
b801d8b2 JF |
837 | if (lines > view->offset) |
838 | lines = view->offset; | |
839 | ||
840 | if (lines == 0) { | |
eb98559e | 841 | report("Cannot scroll beyond the first line"); |
b801d8b2 JF |
842 | return; |
843 | } | |
844 | ||
fd85fef1 | 845 | lines = -lines; |
b801d8b2 | 846 | break; |
03a93dbb | 847 | |
6b161b31 JF |
848 | default: |
849 | die("request %d not handled in switch", request); | |
b801d8b2 JF |
850 | } |
851 | ||
4a2909a7 | 852 | do_scroll_view(view, lines); |
fd85fef1 | 853 | } |
b801d8b2 | 854 | |
4a2909a7 | 855 | /* Cursor moving */ |
fd85fef1 | 856 | static void |
6b161b31 | 857 | move_view(struct view *view, enum request request) |
fd85fef1 JF |
858 | { |
859 | int steps; | |
b801d8b2 | 860 | |
fd85fef1 | 861 | switch (request) { |
4a2909a7 | 862 | case REQ_MOVE_FIRST_LINE: |
78c70acd JF |
863 | steps = -view->lineno; |
864 | break; | |
865 | ||
4a2909a7 | 866 | case REQ_MOVE_LAST_LINE: |
78c70acd JF |
867 | steps = view->lines - view->lineno - 1; |
868 | break; | |
869 | ||
4a2909a7 | 870 | case REQ_MOVE_PAGE_UP: |
78c70acd JF |
871 | steps = view->height > view->lineno |
872 | ? -view->lineno : -view->height; | |
873 | break; | |
874 | ||
4a2909a7 | 875 | case REQ_MOVE_PAGE_DOWN: |
78c70acd JF |
876 | steps = view->lineno + view->height >= view->lines |
877 | ? view->lines - view->lineno - 1 : view->height; | |
878 | break; | |
879 | ||
4a2909a7 | 880 | case REQ_MOVE_UP: |
fd85fef1 JF |
881 | steps = -1; |
882 | break; | |
b801d8b2 | 883 | |
4a2909a7 | 884 | case REQ_MOVE_DOWN: |
fd85fef1 JF |
885 | steps = 1; |
886 | break; | |
6b161b31 JF |
887 | |
888 | default: | |
889 | die("request %d not handled in switch", request); | |
78c70acd | 890 | } |
b801d8b2 | 891 | |
4c6fabc2 | 892 | if (steps <= 0 && view->lineno == 0) { |
eb98559e | 893 | report("Cannot move beyond the first line"); |
78c70acd | 894 | return; |
b801d8b2 | 895 | |
6908bdbd | 896 | } else if (steps >= 0 && view->lineno + 1 >= view->lines) { |
eb98559e | 897 | report("Cannot move beyond the last line"); |
78c70acd | 898 | return; |
fd85fef1 JF |
899 | } |
900 | ||
4c6fabc2 | 901 | /* Move the current line */ |
fd85fef1 | 902 | view->lineno += steps; |
4c6fabc2 JF |
903 | assert(0 <= view->lineno && view->lineno < view->lines); |
904 | ||
905 | /* Repaint the old "current" line if we be scrolling */ | |
2e8488b4 JF |
906 | if (ABS(steps) < view->height) { |
907 | int prev_lineno = view->lineno - steps - view->offset; | |
908 | ||
909 | wmove(view->win, prev_lineno, 0); | |
910 | wclrtoeol(view->win); | |
03a93dbb | 911 | view->ops->draw(view, prev_lineno); |
2e8488b4 | 912 | } |
fd85fef1 | 913 | |
4c6fabc2 | 914 | /* Check whether the view needs to be scrolled */ |
fd85fef1 JF |
915 | if (view->lineno < view->offset || |
916 | view->lineno >= view->offset + view->height) { | |
917 | if (steps < 0 && -steps > view->offset) { | |
918 | steps = -view->offset; | |
b76c2afc JF |
919 | |
920 | } else if (steps > 0) { | |
921 | if (view->lineno == view->lines - 1 && | |
922 | view->lines > view->height) { | |
923 | steps = view->lines - view->offset - 1; | |
924 | if (steps >= view->height) | |
925 | steps -= view->height - 1; | |
926 | } | |
b801d8b2 | 927 | } |
78c70acd | 928 | |
4a2909a7 | 929 | do_scroll_view(view, steps); |
fd85fef1 | 930 | return; |
b801d8b2 JF |
931 | } |
932 | ||
4c6fabc2 | 933 | /* Draw the current line */ |
6b161b31 | 934 | view->ops->draw(view, view->lineno - view->offset); |
fd85fef1 | 935 | |
b801d8b2 JF |
936 | redrawwin(view->win); |
937 | wrefresh(view->win); | |
9d3f5834 | 938 | report(""); |
b801d8b2 JF |
939 | } |
940 | ||
b801d8b2 | 941 | |
2e8488b4 JF |
942 | /* |
943 | * Incremental updating | |
944 | */ | |
b801d8b2 | 945 | |
03a93dbb | 946 | static bool |
b801d8b2 JF |
947 | begin_update(struct view *view) |
948 | { | |
2e8488b4 | 949 | char *id = view->id; |
fd85fef1 | 950 | |
03a93dbb JF |
951 | if (opt_cmd[0]) { |
952 | string_copy(view->cmd, opt_cmd); | |
953 | opt_cmd[0] = 0; | |
8855ada4 JF |
954 | /* When running random commands, the view ref could have become |
955 | * invalid so clear it. */ | |
956 | view->ref[0] = 0; | |
03a93dbb | 957 | } else { |
49f2b43f | 958 | if (snprintf(view->cmd, sizeof(view->cmd), view->cmdfmt, |
03a93dbb JF |
959 | id, id, id) >= sizeof(view->cmd)) |
960 | return FALSE; | |
961 | } | |
b801d8b2 | 962 | |
6908bdbd JF |
963 | /* Special case for the pager view. */ |
964 | if (opt_pipe) { | |
965 | view->pipe = opt_pipe; | |
966 | opt_pipe = NULL; | |
967 | } else { | |
968 | view->pipe = popen(view->cmd, "r"); | |
969 | } | |
970 | ||
2e8488b4 JF |
971 | if (!view->pipe) |
972 | return FALSE; | |
b801d8b2 | 973 | |
6b161b31 | 974 | set_nonblocking_input(TRUE); |
b801d8b2 JF |
975 | |
976 | view->offset = 0; | |
977 | view->lines = 0; | |
978 | view->lineno = 0; | |
49f2b43f | 979 | string_copy(view->vid, id); |
b801d8b2 | 980 | |
2e8488b4 JF |
981 | if (view->line) { |
982 | int i; | |
983 | ||
984 | for (i = 0; i < view->lines; i++) | |
985 | if (view->line[i]) | |
986 | free(view->line[i]); | |
987 | ||
988 | free(view->line); | |
989 | view->line = NULL; | |
990 | } | |
991 | ||
992 | view->start_time = time(NULL); | |
993 | ||
b801d8b2 JF |
994 | return TRUE; |
995 | } | |
996 | ||
997 | static void | |
998 | end_update(struct view *view) | |
999 | { | |
03a93dbb JF |
1000 | if (!view->pipe) |
1001 | return; | |
6b161b31 | 1002 | set_nonblocking_input(FALSE); |
2e8488b4 JF |
1003 | pclose(view->pipe); |
1004 | view->pipe = NULL; | |
b801d8b2 JF |
1005 | } |
1006 | ||
03a93dbb | 1007 | static bool |
b801d8b2 JF |
1008 | update_view(struct view *view) |
1009 | { | |
1010 | char buffer[BUFSIZ]; | |
1011 | char *line; | |
22f66b0a | 1012 | void **tmp; |
82e78006 JF |
1013 | /* The number of lines to read. If too low it will cause too much |
1014 | * redrawing (and possible flickering), if too high responsiveness | |
1015 | * will suffer. */ | |
8855ada4 | 1016 | unsigned long lines = view->height; |
82e78006 | 1017 | int redraw_from = -1; |
b801d8b2 JF |
1018 | |
1019 | if (!view->pipe) | |
1020 | return TRUE; | |
1021 | ||
82e78006 JF |
1022 | /* Only redraw if lines are visible. */ |
1023 | if (view->offset + view->height >= view->lines) | |
1024 | redraw_from = view->lines - view->offset; | |
b801d8b2 JF |
1025 | |
1026 | tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines)); | |
1027 | if (!tmp) | |
1028 | goto alloc_error; | |
1029 | ||
1030 | view->line = tmp; | |
1031 | ||
1032 | while ((line = fgets(buffer, sizeof(buffer), view->pipe))) { | |
1033 | int linelen; | |
1034 | ||
b801d8b2 JF |
1035 | linelen = strlen(line); |
1036 | if (linelen) | |
1037 | line[linelen - 1] = 0; | |
1038 | ||
6b161b31 | 1039 | if (!view->ops->read(view, line)) |
b801d8b2 | 1040 | goto alloc_error; |
fd85fef1 JF |
1041 | |
1042 | if (lines-- == 1) | |
1043 | break; | |
b801d8b2 JF |
1044 | } |
1045 | ||
8855ada4 JF |
1046 | { |
1047 | int digits; | |
1048 | ||
1049 | lines = view->lines; | |
1050 | for (digits = 0; lines; digits++) | |
1051 | lines /= 10; | |
1052 | ||
1053 | /* Keep the displayed view in sync with line number scaling. */ | |
1054 | if (digits != view->digits) { | |
1055 | view->digits = digits; | |
1056 | redraw_from = 0; | |
1057 | } | |
1058 | } | |
1059 | ||
82e78006 JF |
1060 | if (redraw_from >= 0) { |
1061 | /* If this is an incremental update, redraw the previous line | |
a28bcc22 JF |
1062 | * since for commits some members could have changed when |
1063 | * loading the main view. */ | |
82e78006 JF |
1064 | if (redraw_from > 0) |
1065 | redraw_from--; | |
1066 | ||
1067 | /* Incrementally draw avoids flickering. */ | |
1068 | redraw_view_from(view, redraw_from); | |
4c6fabc2 | 1069 | } |
b801d8b2 | 1070 | |
eb98559e JF |
1071 | /* Update the title _after_ the redraw so that if the redraw picks up a |
1072 | * commit reference in view->ref it'll be available here. */ | |
1073 | update_view_title(view); | |
1074 | ||
b801d8b2 | 1075 | if (ferror(view->pipe)) { |
03a93dbb | 1076 | report("Failed to read: %s", strerror(errno)); |
b801d8b2 JF |
1077 | goto end; |
1078 | ||
1079 | } else if (feof(view->pipe)) { | |
2e8488b4 JF |
1080 | time_t secs = time(NULL) - view->start_time; |
1081 | ||
a28bcc22 JF |
1082 | if (view == VIEW(REQ_VIEW_HELP)) { |
1083 | report("%s", HELP); | |
2e8488b4 JF |
1084 | goto end; |
1085 | } | |
1086 | ||
1087 | report("Loaded %d lines in %ld second%s", view->lines, secs, | |
1088 | secs == 1 ? "" : "s"); | |
b801d8b2 JF |
1089 | goto end; |
1090 | } | |
1091 | ||
1092 | return TRUE; | |
1093 | ||
1094 | alloc_error: | |
2e8488b4 | 1095 | report("Allocation failure"); |
b801d8b2 JF |
1096 | |
1097 | end: | |
1098 | end_update(view); | |
1099 | return FALSE; | |
1100 | } | |
1101 | ||
49f2b43f JF |
1102 | enum open_flags { |
1103 | OPEN_DEFAULT = 0, /* Use default view switching. */ | |
1104 | OPEN_SPLIT = 1, /* Split current view. */ | |
1105 | OPEN_BACKGROUNDED = 2, /* Backgrounded. */ | |
1106 | OPEN_RELOAD = 4, /* Reload view even if it is the current. */ | |
1107 | }; | |
1108 | ||
6b161b31 | 1109 | static void |
49f2b43f | 1110 | open_view(struct view *prev, enum request request, enum open_flags flags) |
b801d8b2 | 1111 | { |
49f2b43f JF |
1112 | bool backgrounded = !!(flags & OPEN_BACKGROUNDED); |
1113 | bool split = !!(flags & OPEN_SPLIT); | |
1114 | bool reload = !!(flags & OPEN_RELOAD); | |
a28bcc22 | 1115 | struct view *view = VIEW(request); |
b801d8b2 | 1116 | struct view *displayed; |
6b161b31 JF |
1117 | int nviews; |
1118 | ||
03a93dbb | 1119 | /* Cycle between displayed views and count the views. */ |
6b161b31 | 1120 | foreach_view (displayed, nviews) { |
03a93dbb JF |
1121 | if (prev != view && |
1122 | view == displayed && | |
8855ada4 | 1123 | !strcmp(view->vid, prev->vid)) { |
6b161b31 JF |
1124 | current_view = nviews; |
1125 | /* Blur out the title of the previous view. */ | |
1126 | update_view_title(prev); | |
1127 | report("Switching to %s view", view->name); | |
1128 | return; | |
a28bcc22 | 1129 | } |
6b161b31 | 1130 | } |
b801d8b2 | 1131 | |
49f2b43f | 1132 | if (view == prev && nviews == 1 && !reload) { |
6b161b31 JF |
1133 | report("Already in %s view", view->name); |
1134 | return; | |
1135 | } | |
b801d8b2 | 1136 | |
8855ada4 | 1137 | if ((reload || strcmp(view->vid, view->id)) && |
03a93dbb | 1138 | !begin_update(view)) { |
6b161b31 JF |
1139 | report("Failed to load %s view", view->name); |
1140 | return; | |
1141 | } | |
a28bcc22 | 1142 | |
6b161b31 JF |
1143 | if (split) { |
1144 | display[current_view + 1] = view; | |
1145 | if (!backgrounded) | |
a28bcc22 | 1146 | current_view++; |
6b161b31 JF |
1147 | } else { |
1148 | /* Maximize the current view. */ | |
1149 | memset(display, 0, sizeof(display)); | |
1150 | current_view = 0; | |
1151 | display[current_view] = view; | |
a28bcc22 | 1152 | } |
b801d8b2 | 1153 | |
6b161b31 | 1154 | resize_display(); |
b801d8b2 | 1155 | |
a8891802 | 1156 | if (split && prev->lineno - prev->offset >= prev->height) { |
03a93dbb | 1157 | /* Take the title line into account. */ |
eb98559e | 1158 | int lines = prev->lineno - prev->offset - prev->height + 1; |
03a93dbb JF |
1159 | |
1160 | /* Scroll the view that was split if the current line is | |
1161 | * outside the new limited view. */ | |
1162 | do_scroll_view(prev, lines); | |
1163 | } | |
1164 | ||
6b161b31 JF |
1165 | if (prev && view != prev) { |
1166 | /* "Blur" the previous view. */ | |
1167 | update_view_title(prev); | |
1168 | ||
1169 | /* Continue loading split views in the background. */ | |
03a93dbb | 1170 | if (!split) |
6b161b31 | 1171 | end_update(prev); |
b801d8b2 JF |
1172 | } |
1173 | ||
03a93dbb JF |
1174 | if (view->pipe) { |
1175 | /* Clear the old view and let the incremental updating refill | |
1176 | * the screen. */ | |
1177 | wclear(view->win); | |
1178 | report("Loading..."); | |
1179 | } else { | |
1180 | redraw_view(view); | |
1181 | report(""); | |
1182 | } | |
b801d8b2 JF |
1183 | } |
1184 | ||
1185 | ||
6b161b31 JF |
1186 | /* |
1187 | * User request switch noodle | |
1188 | */ | |
1189 | ||
b801d8b2 | 1190 | static int |
6b161b31 | 1191 | view_driver(struct view *view, enum request request) |
b801d8b2 | 1192 | { |
b801d8b2 JF |
1193 | int i; |
1194 | ||
1195 | switch (request) { | |
4a2909a7 JF |
1196 | case REQ_MOVE_UP: |
1197 | case REQ_MOVE_DOWN: | |
1198 | case REQ_MOVE_PAGE_UP: | |
1199 | case REQ_MOVE_PAGE_DOWN: | |
1200 | case REQ_MOVE_FIRST_LINE: | |
1201 | case REQ_MOVE_LAST_LINE: | |
a28bcc22 | 1202 | move_view(view, request); |
fd85fef1 JF |
1203 | break; |
1204 | ||
4a2909a7 JF |
1205 | case REQ_SCROLL_LINE_DOWN: |
1206 | case REQ_SCROLL_LINE_UP: | |
1207 | case REQ_SCROLL_PAGE_DOWN: | |
1208 | case REQ_SCROLL_PAGE_UP: | |
a28bcc22 | 1209 | scroll_view(view, request); |
b801d8b2 JF |
1210 | break; |
1211 | ||
4a2909a7 | 1212 | case REQ_VIEW_MAIN: |
4a2909a7 | 1213 | case REQ_VIEW_DIFF: |
2e8488b4 JF |
1214 | case REQ_VIEW_LOG: |
1215 | case REQ_VIEW_HELP: | |
6908bdbd | 1216 | case REQ_VIEW_PAGER: |
49f2b43f | 1217 | open_view(view, request, OPEN_DEFAULT); |
b801d8b2 JF |
1218 | break; |
1219 | ||
6b161b31 | 1220 | case REQ_ENTER: |
6908bdbd JF |
1221 | if (!view->lines) { |
1222 | report("Nothing to enter"); | |
1223 | break; | |
1224 | } | |
6b161b31 JF |
1225 | return view->ops->enter(view); |
1226 | ||
03a93dbb JF |
1227 | case REQ_VIEW_NEXT: |
1228 | { | |
1229 | int nviews = display[1] ? 2 : 1; | |
1230 | int next_view = (current_view + 1) % nviews; | |
1231 | ||
1232 | if (next_view == current_view) { | |
1233 | report("Only one view is displayed"); | |
1234 | break; | |
1235 | } | |
1236 | ||
1237 | current_view = next_view; | |
1238 | /* Blur out the title of the previous view. */ | |
1239 | update_view_title(view); | |
1240 | report("Switching to %s view", display[current_view]->name); | |
1241 | break; | |
1242 | } | |
4a2909a7 | 1243 | case REQ_TOGGLE_LINE_NUMBERS: |
b76c2afc | 1244 | opt_line_number = !opt_line_number; |
a28bcc22 | 1245 | redraw_view(view); |
b801d8b2 JF |
1246 | break; |
1247 | ||
03a93dbb | 1248 | case REQ_PROMPT: |
8855ada4 | 1249 | /* Always reload^Wrerun commands from the prompt. */ |
49f2b43f | 1250 | open_view(view, opt_request, OPEN_RELOAD); |
03a93dbb JF |
1251 | break; |
1252 | ||
4a2909a7 | 1253 | case REQ_STOP_LOADING: |
03a93dbb | 1254 | foreach_view (view, i) { |
2e8488b4 | 1255 | if (view->pipe) |
03a93dbb JF |
1256 | report("Stopped loaded of %s view", view->name), |
1257 | end_update(view); | |
1258 | } | |
b801d8b2 JF |
1259 | break; |
1260 | ||
4a2909a7 | 1261 | case REQ_SHOW_VERSION: |
2e8488b4 | 1262 | report("Version: %s", VERSION); |
b801d8b2 JF |
1263 | return TRUE; |
1264 | ||
4a2909a7 | 1265 | case REQ_SCREEN_REDRAW: |
eb98559e JF |
1266 | foreach_view (view, i) { |
1267 | redraw_view(view); | |
1268 | update_view_title(view); | |
1269 | } | |
4a2909a7 JF |
1270 | break; |
1271 | ||
1272 | case REQ_SCREEN_UPDATE: | |
b801d8b2 JF |
1273 | doupdate(); |
1274 | return TRUE; | |
1275 | ||
1276 | case REQ_QUIT: | |
1277 | return FALSE; | |
1278 | ||
1279 | default: | |
2e8488b4 | 1280 | /* An unknown key will show most commonly used commands. */ |
a28bcc22 | 1281 | report("%s", HELP); |
b801d8b2 JF |
1282 | return TRUE; |
1283 | } | |
1284 | ||
1285 | return TRUE; | |
1286 | } | |
1287 | ||
1288 | ||
1289 | /* | |
6b161b31 | 1290 | * View backend handlers |
b801d8b2 JF |
1291 | */ |
1292 | ||
6b161b31 | 1293 | static bool |
22f66b0a | 1294 | pager_draw(struct view *view, unsigned int lineno) |
b801d8b2 | 1295 | { |
78c70acd | 1296 | enum line_type type; |
b801d8b2 | 1297 | char *line; |
4c6fabc2 | 1298 | int linelen; |
78c70acd | 1299 | int attr; |
b801d8b2 | 1300 | |
fd85fef1 JF |
1301 | if (view->offset + lineno >= view->lines) |
1302 | return FALSE; | |
1303 | ||
b801d8b2 | 1304 | line = view->line[view->offset + lineno]; |
78c70acd | 1305 | type = get_line_type(line); |
b801d8b2 | 1306 | |
fd85fef1 | 1307 | if (view->offset + lineno == view->lineno) { |
8855ada4 | 1308 | if (type == LINE_COMMIT) { |
03a93dbb JF |
1309 | string_copy(view->ref, line + 7); |
1310 | string_copy(ref_commit, view->ref); | |
1311 | } | |
8855ada4 | 1312 | |
78c70acd | 1313 | type = LINE_CURSOR; |
fd85fef1 JF |
1314 | } |
1315 | ||
78c70acd | 1316 | attr = get_line_attr(type); |
b801d8b2 | 1317 | wattrset(view->win, attr); |
b76c2afc | 1318 | |
4c6fabc2 JF |
1319 | linelen = strlen(line); |
1320 | linelen = MIN(linelen, view->width); | |
1321 | ||
b76c2afc | 1322 | if (opt_line_number) { |
8855ada4 JF |
1323 | static char indent[] = " "; |
1324 | unsigned long real_lineno = view->offset + lineno + 1; | |
a28bcc22 | 1325 | int col = 0; |
82e78006 | 1326 | |
2e8488b4 | 1327 | if (real_lineno == 1 || (real_lineno % opt_num_interval) == 0) |
8855ada4 JF |
1328 | mvwprintw(view->win, lineno, 0, "%.*d", view->digits, real_lineno); |
1329 | ||
1330 | else if (view->digits < sizeof(indent)) | |
1331 | mvwaddnstr(view->win, lineno, 0, indent, view->digits); | |
1332 | ||
1333 | waddstr(view->win, ": "); | |
4c6fabc2 | 1334 | |
b76c2afc JF |
1335 | while (line) { |
1336 | if (*line == '\t') { | |
82e78006 JF |
1337 | waddnstr(view->win, " ", 8 - (col % 8)); |
1338 | col += 8 - (col % 8); | |
b76c2afc | 1339 | line++; |
82e78006 | 1340 | |
b76c2afc JF |
1341 | } else { |
1342 | char *tab = strchr(line, '\t'); | |
1343 | ||
1344 | if (tab) | |
1345 | waddnstr(view->win, line, tab - line); | |
1346 | else | |
1347 | waddstr(view->win, line); | |
82e78006 | 1348 | col += tab - line; |
b76c2afc JF |
1349 | line = tab; |
1350 | } | |
1351 | } | |
1352 | waddstr(view->win, line); | |
1353 | ||
1354 | } else { | |
2e8488b4 JF |
1355 | #if 0 |
1356 | /* NOTE: Code for only highlighting the text on the cursor line. | |
1357 | * Kept since I've not yet decided whether to highlight the | |
1358 | * entire line or not. --fonseca */ | |
b76c2afc JF |
1359 | /* No empty lines makes cursor drawing and clearing implicit. */ |
1360 | if (!*line) | |
4c6fabc2 | 1361 | line = " ", linelen = 1; |
2e8488b4 | 1362 | #endif |
4c6fabc2 | 1363 | mvwaddnstr(view->win, lineno, 0, line, linelen); |
b76c2afc | 1364 | } |
b801d8b2 | 1365 | |
2e8488b4 JF |
1366 | /* Paint the rest of the line if it's the cursor line. */ |
1367 | if (type == LINE_CURSOR) | |
1368 | wchgat(view->win, -1, 0, type, NULL); | |
1369 | ||
b801d8b2 JF |
1370 | return TRUE; |
1371 | } | |
1372 | ||
6b161b31 | 1373 | static bool |
22f66b0a JF |
1374 | pager_read(struct view *view, char *line) |
1375 | { | |
8855ada4 JF |
1376 | /* For some reason the piped man page has many empty lines |
1377 | * so skip successive emptys lines to work around it. */ | |
1378 | if (view == VIEW(REQ_VIEW_HELP) && | |
1379 | !*line && | |
1380 | view->lines && | |
1381 | !*((char *) view->line[view->lines - 1])) | |
1382 | return TRUE; | |
1383 | ||
22f66b0a JF |
1384 | view->line[view->lines] = strdup(line); |
1385 | if (!view->line[view->lines]) | |
1386 | return FALSE; | |
1387 | ||
1388 | view->lines++; | |
1389 | return TRUE; | |
1390 | } | |
1391 | ||
6b161b31 JF |
1392 | static bool |
1393 | pager_enter(struct view *view) | |
1394 | { | |
1395 | char *line = view->line[view->lineno]; | |
1396 | ||
1397 | if (get_line_type(line) == LINE_COMMIT) { | |
49f2b43f | 1398 | open_view(view, REQ_VIEW_DIFF, OPEN_DEFAULT); |
6b161b31 JF |
1399 | } |
1400 | ||
1401 | return TRUE; | |
1402 | } | |
1403 | ||
1404 | ||
1405 | static struct view_ops pager_ops = { | |
1406 | pager_draw, | |
1407 | pager_read, | |
1408 | pager_enter, | |
1409 | }; | |
1410 | ||
1411 | static bool | |
22f66b0a JF |
1412 | main_draw(struct view *view, unsigned int lineno) |
1413 | { | |
2e8488b4 | 1414 | char buf[DATE_COLS + 1]; |
22f66b0a | 1415 | struct commit *commit; |
78c70acd | 1416 | enum line_type type; |
b76c2afc JF |
1417 | int cols = 0; |
1418 | size_t timelen; | |
22f66b0a JF |
1419 | |
1420 | if (view->offset + lineno >= view->lines) | |
1421 | return FALSE; | |
1422 | ||
1423 | commit = view->line[view->offset + lineno]; | |
4c6fabc2 JF |
1424 | if (!*commit->author) |
1425 | return FALSE; | |
22f66b0a | 1426 | |
22f66b0a | 1427 | if (view->offset + lineno == view->lineno) { |
03a93dbb | 1428 | string_copy(view->ref, commit->id); |
49f2b43f | 1429 | string_copy(ref_commit, view->ref); |
78c70acd JF |
1430 | type = LINE_CURSOR; |
1431 | } else { | |
b76c2afc JF |
1432 | type = LINE_MAIN_COMMIT; |
1433 | } | |
1434 | ||
1435 | wmove(view->win, lineno, cols); | |
1436 | wattrset(view->win, get_line_attr(LINE_MAIN_DATE)); | |
1437 | ||
4c6fabc2 | 1438 | timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time); |
b76c2afc | 1439 | waddnstr(view->win, buf, timelen); |
4c6fabc2 | 1440 | waddstr(view->win, " "); |
b76c2afc | 1441 | |
4c6fabc2 | 1442 | cols += DATE_COLS; |
b76c2afc JF |
1443 | wmove(view->win, lineno, cols); |
1444 | wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR)); | |
1445 | ||
1446 | if (strlen(commit->author) > 19) { | |
1447 | waddnstr(view->win, commit->author, 18); | |
1448 | wattrset(view->win, get_line_attr(LINE_MAIN_DELIM)); | |
1449 | waddch(view->win, '~'); | |
1450 | } else { | |
1451 | waddstr(view->win, commit->author); | |
22f66b0a JF |
1452 | } |
1453 | ||
b76c2afc JF |
1454 | cols += 20; |
1455 | wattrset(view->win, A_NORMAL); | |
1456 | mvwaddch(view->win, lineno, cols, ACS_LTEE); | |
78c70acd | 1457 | wattrset(view->win, get_line_attr(type)); |
b76c2afc | 1458 | mvwaddstr(view->win, lineno, cols + 2, commit->title); |
22f66b0a JF |
1459 | wattrset(view->win, A_NORMAL); |
1460 | ||
1461 | return TRUE; | |
1462 | } | |
1463 | ||
4c6fabc2 | 1464 | /* Reads git log --pretty=raw output and parses it into the commit struct. */ |
6b161b31 | 1465 | static bool |
22f66b0a JF |
1466 | main_read(struct view *view, char *line) |
1467 | { | |
78c70acd JF |
1468 | enum line_type type = get_line_type(line); |
1469 | struct commit *commit; | |
22f66b0a | 1470 | |
78c70acd JF |
1471 | switch (type) { |
1472 | case LINE_COMMIT: | |
22f66b0a JF |
1473 | commit = calloc(1, sizeof(struct commit)); |
1474 | if (!commit) | |
1475 | return FALSE; | |
1476 | ||
4c6fabc2 | 1477 | line += STRING_SIZE("commit "); |
b76c2afc | 1478 | |
22f66b0a | 1479 | view->line[view->lines++] = commit; |
82e78006 | 1480 | string_copy(commit->id, line); |
78c70acd | 1481 | break; |
22f66b0a | 1482 | |
8855ada4 | 1483 | case LINE_AUTHOR: |
b76c2afc | 1484 | { |
4c6fabc2 | 1485 | char *ident = line + STRING_SIZE("author "); |
b76c2afc JF |
1486 | char *end = strchr(ident, '<'); |
1487 | ||
1488 | if (end) { | |
1489 | for (; end > ident && isspace(end[-1]); end--) ; | |
1490 | *end = 0; | |
1491 | } | |
1492 | ||
1493 | commit = view->line[view->lines - 1]; | |
82e78006 | 1494 | string_copy(commit->author, ident); |
b76c2afc | 1495 | |
4c6fabc2 | 1496 | /* Parse epoch and timezone */ |
b76c2afc JF |
1497 | if (end) { |
1498 | char *secs = strchr(end + 1, '>'); | |
1499 | char *zone; | |
1500 | time_t time; | |
1501 | ||
1502 | if (!secs || secs[1] != ' ') | |
1503 | break; | |
1504 | ||
1505 | secs += 2; | |
1506 | time = (time_t) atol(secs); | |
1507 | zone = strchr(secs, ' '); | |
4c6fabc2 | 1508 | if (zone && strlen(zone) == STRING_SIZE(" +0700")) { |
b76c2afc JF |
1509 | long tz; |
1510 | ||
1511 | zone++; | |
1512 | tz = ('0' - zone[1]) * 60 * 60 * 10; | |
1513 | tz += ('0' - zone[2]) * 60 * 60; | |
1514 | tz += ('0' - zone[3]) * 60; | |
1515 | tz += ('0' - zone[4]) * 60; | |
1516 | ||
1517 | if (zone[0] == '-') | |
1518 | tz = -tz; | |
1519 | ||
1520 | time -= tz; | |
1521 | } | |
1522 | gmtime_r(&time, &commit->time); | |
1523 | } | |
1524 | break; | |
1525 | } | |
78c70acd | 1526 | default: |
2e8488b4 JF |
1527 | /* We should only ever end up here if there has already been a |
1528 | * commit line, however, be safe. */ | |
1529 | if (view->lines == 0) | |
1530 | break; | |
1531 | ||
1532 | /* Fill in the commit title if it has not already been set. */ | |
78c70acd | 1533 | commit = view->line[view->lines - 1]; |
2e8488b4 JF |
1534 | if (commit->title[0]) |
1535 | break; | |
1536 | ||
1537 | /* Require titles to start with a non-space character at the | |
1538 | * offset used by git log. */ | |
eb98559e JF |
1539 | /* FIXME: More gracefull handling of titles; append "..." to |
1540 | * shortened titles, etc. */ | |
2e8488b4 | 1541 | if (strncmp(line, " ", 4) || |
eb98559e | 1542 | isspace(line[4])) |
82e78006 JF |
1543 | break; |
1544 | ||
1545 | string_copy(commit->title, line + 4); | |
22f66b0a JF |
1546 | } |
1547 | ||
1548 | return TRUE; | |
1549 | } | |
1550 | ||
6b161b31 JF |
1551 | static bool |
1552 | main_enter(struct view *view) | |
b801d8b2 | 1553 | { |
49f2b43f | 1554 | open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT | OPEN_BACKGROUNDED); |
6b161b31 | 1555 | return TRUE; |
b801d8b2 JF |
1556 | } |
1557 | ||
6b161b31 JF |
1558 | static struct view_ops main_ops = { |
1559 | main_draw, | |
1560 | main_read, | |
1561 | main_enter, | |
1562 | }; | |
2e8488b4 | 1563 | |
6b161b31 JF |
1564 | /* |
1565 | * Status management | |
1566 | */ | |
2e8488b4 | 1567 | |
8855ada4 JF |
1568 | /* Whether or not the curses interface has been initialized. */ |
1569 | bool cursed = FALSE; | |
1570 | ||
6b161b31 JF |
1571 | /* The status window is used for polling keystrokes. */ |
1572 | static WINDOW *status_win; | |
4a2909a7 | 1573 | |
2e8488b4 | 1574 | /* Update status and title window. */ |
4a2909a7 JF |
1575 | static void |
1576 | report(const char *msg, ...) | |
1577 | { | |
1578 | va_list args; | |
b76c2afc | 1579 | |
b801d8b2 JF |
1580 | va_start(args, msg); |
1581 | ||
2e8488b4 JF |
1582 | /* Update the title window first, so the cursor ends up in the status |
1583 | * window. */ | |
6b161b31 | 1584 | update_view_title(display[current_view]); |
4a2909a7 | 1585 | |
b801d8b2 JF |
1586 | werase(status_win); |
1587 | wmove(status_win, 0, 0); | |
b801d8b2 JF |
1588 | vwprintw(status_win, msg, args); |
1589 | wrefresh(status_win); | |
1590 | ||
1591 | va_end(args); | |
b801d8b2 JF |
1592 | } |
1593 | ||
6b161b31 JF |
1594 | /* Controls when nodelay should be in effect when polling user input. */ |
1595 | static void | |
1596 | set_nonblocking_input(int loading) | |
b801d8b2 | 1597 | { |
6b161b31 JF |
1598 | /* The number of loading views. */ |
1599 | static unsigned int nloading; | |
b801d8b2 | 1600 | |
6b161b31 JF |
1601 | if (loading == TRUE) { |
1602 | if (nloading++ == 0) | |
1603 | nodelay(status_win, TRUE); | |
1604 | return; | |
82e78006 | 1605 | } |
b76c2afc | 1606 | |
6b161b31 JF |
1607 | if (nloading-- == 1) |
1608 | nodelay(status_win, FALSE); | |
1609 | } | |
1610 | ||
1611 | static void | |
1612 | init_display(void) | |
1613 | { | |
1614 | int x, y; | |
b76c2afc | 1615 | |
6908bdbd JF |
1616 | /* Initialize the curses library */ |
1617 | if (isatty(STDIN_FILENO)) { | |
8855ada4 | 1618 | cursed = !!initscr(); |
6908bdbd JF |
1619 | } else { |
1620 | /* Leave stdin and stdout alone when acting as a pager. */ | |
1621 | FILE *io = fopen("/dev/tty", "r+"); | |
1622 | ||
8855ada4 | 1623 | cursed = !!newterm(NULL, io, io); |
6908bdbd JF |
1624 | } |
1625 | ||
8855ada4 JF |
1626 | if (!cursed) |
1627 | die("Failed to initialize curses"); | |
1628 | ||
2e8488b4 JF |
1629 | nonl(); /* Tell curses not to do NL->CR/NL on output */ |
1630 | cbreak(); /* Take input chars one at a time, no wait for \n */ | |
1631 | noecho(); /* Don't echo input */ | |
b801d8b2 | 1632 | leaveok(stdscr, TRUE); |
b801d8b2 JF |
1633 | |
1634 | if (has_colors()) | |
1635 | init_colors(); | |
1636 | ||
1637 | getmaxyx(stdscr, y, x); | |
1638 | status_win = newwin(1, 0, y - 1, 0); | |
1639 | if (!status_win) | |
1640 | die("Failed to create status window"); | |
1641 | ||
1642 | /* Enable keyboard mapping */ | |
1643 | keypad(status_win, TRUE); | |
78c70acd | 1644 | wbkgdset(status_win, get_line_attr(LINE_STATUS)); |
6b161b31 JF |
1645 | } |
1646 | ||
1647 | /* | |
1648 | * Main | |
1649 | */ | |
1650 | ||
1651 | static void | |
1652 | quit(int sig) | |
1653 | { | |
8855ada4 JF |
1654 | /* XXX: Restore tty modes and let the OS cleanup the rest! */ |
1655 | if (cursed) | |
1656 | endwin(); | |
6b161b31 JF |
1657 | exit(0); |
1658 | } | |
1659 | ||
1660 | static void die(const char *err, ...) | |
1661 | { | |
1662 | va_list args; | |
1663 | ||
1664 | endwin(); | |
1665 | ||
1666 | va_start(args, err); | |
1667 | fputs("tig: ", stderr); | |
1668 | vfprintf(stderr, err, args); | |
1669 | fputs("\n", stderr); | |
1670 | va_end(args); | |
1671 | ||
1672 | exit(1); | |
1673 | } | |
1674 | ||
1675 | int | |
1676 | main(int argc, char *argv[]) | |
1677 | { | |
1678 | enum request request; | |
6b161b31 JF |
1679 | |
1680 | signal(SIGINT, quit); | |
1681 | ||
8855ada4 | 1682 | if (!parse_options(argc, argv)) |
6b161b31 JF |
1683 | return 0; |
1684 | ||
6b161b31 JF |
1685 | request = opt_request; |
1686 | ||
1687 | init_display(); | |
b801d8b2 JF |
1688 | |
1689 | while (view_driver(display[current_view], request)) { | |
1690 | struct view *view; | |
6b161b31 | 1691 | int key; |
b801d8b2 JF |
1692 | int i; |
1693 | ||
6b161b31 JF |
1694 | foreach_view (view, i) |
1695 | update_view(view); | |
b801d8b2 JF |
1696 | |
1697 | /* Refresh, accept single keystroke of input */ | |
6b161b31 JF |
1698 | key = wgetch(status_win); |
1699 | request = get_request(key); | |
03a93dbb JF |
1700 | |
1701 | if (request == REQ_PROMPT) { | |
6908bdbd JF |
1702 | report(":"); |
1703 | /* Temporarily switch to line-oriented and echoed | |
1704 | * input. */ | |
03a93dbb JF |
1705 | nocbreak(); |
1706 | echo(); | |
49f2b43f JF |
1707 | |
1708 | if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) { | |
1709 | memcpy(opt_cmd, "git ", 4); | |
1710 | opt_request = REQ_VIEW_PAGER; | |
1711 | } else { | |
1712 | request = ERR; | |
1713 | } | |
1714 | ||
6908bdbd JF |
1715 | noecho(); |
1716 | cbreak(); | |
03a93dbb | 1717 | } |
b801d8b2 JF |
1718 | } |
1719 | ||
1720 | quit(0); | |
1721 | ||
1722 | return 0; | |
1723 | } | |
1724 | ||
1725 | /** | |
4c6fabc2 JF |
1726 | * TODO |
1727 | * ---- | |
1728 | * Features that should be explored. | |
1729 | * | |
03a93dbb JF |
1730 | * - Terminal resizing support. I am yet to figure out whether catching |
1731 | * SIGWINCH is preferred over using ncurses' built-in support for resizing. | |
4c6fabc2 JF |
1732 | * |
1733 | * - Locale support. | |
1734 | * | |
b801d8b2 JF |
1735 | * COPYRIGHT |
1736 | * --------- | |
4a2909a7 | 1737 | * Copyright (c) Jonas Fonseca <fonseca@diku.dk>, 2006 |
b801d8b2 JF |
1738 | * |
1739 | * This program is free software; you can redistribute it and/or modify | |
1740 | * it under the terms of the GNU General Public License as published by | |
1741 | * the Free Software Foundation; either version 2 of the License, or | |
1742 | * (at your option) any later version. | |
1743 | * | |
1744 | * SEE ALSO | |
1745 | * -------- | |
4c6fabc2 | 1746 | * [verse] |
b801d8b2 JF |
1747 | * link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)], |
1748 | * link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)] | |
4c6fabc2 JF |
1749 | * gitk(1): git repository browser written using tcl/tk, |
1750 | * gitview(1): git repository browser written using python/gtk. | |
b801d8b2 | 1751 | **/ |