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