ui-log.c (view raw)
1/* ui-log.c: functions for log output
2 *
3 * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
4 *
5 * Licensed under GNU General Public License v2
6 * (see COPYING for full license text)
7 */
8
9#include "cgit.h"
10#include "ui-log.h"
11#include "html.h"
12#include "ui-shared.h"
13#include "argv-array.h"
14
15static int files, add_lines, rem_lines, lines_counted;
16
17/*
18 * The list of available column colors in the commit graph.
19 */
20static const char *column_colors_html[] = {
21 "<span class='column1'>",
22 "<span class='column2'>",
23 "<span class='column3'>",
24 "<span class='column4'>",
25 "<span class='column5'>",
26 "<span class='column6'>",
27 "</span>",
28};
29
30#define COLUMN_COLORS_HTML_MAX (ARRAY_SIZE(column_colors_html) - 1)
31
32static void count_lines(char *line, int size)
33{
34 if (size <= 0)
35 return;
36
37 if (line[0] == '+')
38 add_lines++;
39
40 else if (line[0] == '-')
41 rem_lines++;
42}
43
44static void inspect_files(struct diff_filepair *pair)
45{
46 unsigned long old_size = 0;
47 unsigned long new_size = 0;
48 int binary = 0;
49
50 files++;
51 if (ctx.repo->enable_log_linecount)
52 cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
53 &new_size, &binary, 0, ctx.qry.ignorews,
54 count_lines);
55}
56
57void show_commit_decorations(struct commit *commit)
58{
59 const struct name_decoration *deco;
60 static char buf[1024];
61
62 buf[sizeof(buf) - 1] = 0;
63 deco = get_name_decoration(&commit->object);
64 if (!deco)
65 return;
66 html("<span class='decoration'>");
67 while (deco) {
68 strncpy(buf, prettify_refname(deco->name), sizeof(buf) - 1);
69 switch(deco->type) {
70 case DECORATION_NONE:
71 /* If the git-core doesn't recognize it,
72 * don't display anything. */
73 break;
74 case DECORATION_REF_LOCAL:
75 cgit_log_link(buf, NULL, "branch-deco", buf, NULL,
76 ctx.qry.vpath, 0, NULL, NULL,
77 ctx.qry.showmsg, 0);
78 break;
79 case DECORATION_REF_TAG:
80 cgit_tag_link(buf, NULL, "tag-deco", buf);
81 break;
82 case DECORATION_REF_REMOTE:
83 if (!ctx.repo->enable_remote_branches)
84 break;
85 cgit_log_link(buf, NULL, "remote-deco", NULL,
86 oid_to_hex(&commit->object.oid),
87 ctx.qry.vpath, 0, NULL, NULL,
88 ctx.qry.showmsg, 0);
89 break;
90 default:
91 cgit_commit_link(buf, NULL, "deco", ctx.qry.head,
92 oid_to_hex(&commit->object.oid),
93 ctx.qry.vpath);
94 break;
95 }
96 deco = deco->next;
97 }
98 html("</span>");
99}
100
101static void handle_rename(struct diff_filepair *pair)
102{
103 /*
104 * After we have seen a rename, we generate links to the previous
105 * name of the file so that commit & diff views get fed the path
106 * that is correct for the commit they are showing, avoiding the
107 * need to walk the entire history leading back to every commit we
108 * show in order detect renames.
109 */
110 if (0 != strcmp(ctx.qry.vpath, pair->two->path)) {
111 free(ctx.qry.vpath);
112 ctx.qry.vpath = xstrdup(pair->two->path);
113 }
114 inspect_files(pair);
115}
116
117static int show_commit(struct commit *commit, struct rev_info *revs)
118{
119 struct commit_list *parents = commit->parents;
120 struct commit *parent;
121 int found = 0, saved_fmt;
122 unsigned saved_flags = revs->diffopt.flags;
123
124
125 /* Always show if we're not in "follow" mode with a single file. */
126 if (!ctx.qry.follow)
127 return 1;
128
129 /*
130 * In "follow" mode, we don't show merges. This is consistent with
131 * "git log --follow -- <file>".
132 */
133 if (parents && parents->next)
134 return 0;
135
136 /*
137 * If this is the root commit, do what rev_info tells us.
138 */
139 if (!parents)
140 return revs->show_root_diff;
141
142 /* When we get here we have precisely one parent. */
143 parent = parents->item;
144 /* If we can't parse the commit, let print_commit() report an error. */
145 if (parse_commit(parent))
146 return 1;
147
148 files = 0;
149 add_lines = 0;
150 rem_lines = 0;
151
152 DIFF_OPT_SET(&revs->diffopt, RECURSIVE);
153 diff_tree_sha1(parent->tree->object.oid.hash,
154 commit->tree->object.oid.hash,
155 "", &revs->diffopt);
156 diffcore_std(&revs->diffopt);
157
158 found = !diff_queue_is_empty();
159 saved_fmt = revs->diffopt.output_format;
160 revs->diffopt.output_format = DIFF_FORMAT_CALLBACK;
161 revs->diffopt.format_callback = cgit_diff_tree_cb;
162 revs->diffopt.format_callback_data = handle_rename;
163 diff_flush(&revs->diffopt);
164 revs->diffopt.output_format = saved_fmt;
165 revs->diffopt.flags = saved_flags;
166
167 lines_counted = 1;
168 return found;
169}
170
171static void print_commit(struct commit *commit, struct rev_info *revs)
172{
173 struct commitinfo *info;
174 int columns = revs->graph ? 4 : 3;
175 struct strbuf graphbuf = STRBUF_INIT;
176 struct strbuf msgbuf = STRBUF_INIT;
177
178 if (ctx.repo->enable_log_filecount)
179 columns++;
180 if (ctx.repo->enable_log_linecount)
181 columns++;
182
183 if (revs->graph) {
184 /* Advance graph until current commit */
185 while (!graph_next_line(revs->graph, &graphbuf)) {
186 /* Print graph segment in otherwise empty table row */
187 html("<tr class='nohover'><td class='commitgraph'>");
188 html(graphbuf.buf);
189 htmlf("</td><td colspan='%d' /></tr>\n", columns);
190 strbuf_setlen(&graphbuf, 0);
191 }
192 /* Current commit's graph segment is now ready in graphbuf */
193 }
194
195 info = cgit_parse_commit(commit);
196 htmlf("<tr%s>", ctx.qry.showmsg ? " class='logheader'" : "");
197
198 if (revs->graph) {
199 /* Print graph segment for current commit */
200 html("<td class='commitgraph'>");
201 html(graphbuf.buf);
202 html("</td>");
203 strbuf_setlen(&graphbuf, 0);
204 }
205 else {
206 html("<td>");
207 cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
208 html("</td>");
209 }
210
211 htmlf("<td%s>", ctx.qry.showmsg ? " class='logsubject'" : "");
212 if (ctx.qry.showmsg) {
213 /* line-wrap long commit subjects instead of truncating them */
214 size_t subject_len = strlen(info->subject);
215
216 if (subject_len > ctx.cfg.max_msg_len &&
217 ctx.cfg.max_msg_len >= 15) {
218 /* symbol for signaling line-wrap (in PAGE_ENCODING) */
219 const char wrap_symbol[] = { ' ', 0xE2, 0x86, 0xB5, 0 };
220 int i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
221
222 /* Rewind i to preceding space character */
223 while (i > 0 && !isspace(info->subject[i]))
224 --i;
225 if (!i) /* Oops, zero spaces. Reset i */
226 i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
227
228 /* add remainder starting at i to msgbuf */
229 strbuf_add(&msgbuf, info->subject + i, subject_len - i);
230 strbuf_trim(&msgbuf);
231 strbuf_add(&msgbuf, "\n\n", 2);
232
233 /* Place wrap_symbol at position i in info->subject */
234 strcpy(info->subject + i, wrap_symbol);
235 }
236 }
237 cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
238 oid_to_hex(&commit->object.oid), ctx.qry.vpath);
239 show_commit_decorations(commit);
240 html("</td><td>");
241 cgit_open_filter(ctx.repo->email_filter, info->author_email, "log");
242 html_txt(info->author);
243 cgit_close_filter(ctx.repo->email_filter);
244
245 if (revs->graph) {
246 html("</td><td>");
247 cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
248 }
249
250 if (!lines_counted && (ctx.repo->enable_log_filecount ||
251 ctx.repo->enable_log_linecount)) {
252 files = 0;
253 add_lines = 0;
254 rem_lines = 0;
255 cgit_diff_commit(commit, inspect_files, ctx.qry.vpath);
256 }
257
258 if (ctx.repo->enable_log_filecount)
259 htmlf("</td><td>%d", files);
260 if (ctx.repo->enable_log_linecount)
261 htmlf("</td><td>-%d/+%d", rem_lines, add_lines);
262
263 html("</td></tr>\n");
264
265 if (revs->graph || ctx.qry.showmsg) { /* Print a second table row */
266 html("<tr class='nohover'>");
267
268 if (ctx.qry.showmsg) {
269 /* Concatenate commit message + notes in msgbuf */
270 if (info->msg && *(info->msg)) {
271 strbuf_addstr(&msgbuf, info->msg);
272 strbuf_addch(&msgbuf, '\n');
273 }
274 format_display_notes(commit->object.oid.hash,
275 &msgbuf, PAGE_ENCODING, 0);
276 strbuf_addch(&msgbuf, '\n');
277 strbuf_ltrim(&msgbuf);
278 }
279
280 if (revs->graph) {
281 int lines = 0;
282
283 /* Calculate graph padding */
284 if (ctx.qry.showmsg) {
285 /* Count #lines in commit message + notes */
286 const char *p = msgbuf.buf;
287 lines = 1;
288 while ((p = strchr(p, '\n'))) {
289 p++;
290 lines++;
291 }
292 }
293
294 /* Print graph padding */
295 html("<td class='commitgraph'>");
296 while (lines > 0 || !graph_is_commit_finished(revs->graph)) {
297 if (graphbuf.len)
298 html("\n");
299 strbuf_setlen(&graphbuf, 0);
300 graph_next_line(revs->graph, &graphbuf);
301 html(graphbuf.buf);
302 lines--;
303 }
304 html("</td>\n");
305 }
306 else
307 html("<td/>"); /* Empty 'Age' column */
308
309 /* Print msgbuf into remainder of table row */
310 htmlf("<td colspan='%d'%s>\n", columns - (revs->graph ? 1 : 0),
311 ctx.qry.showmsg ? " class='logmsg'" : "");
312 html_txt(msgbuf.buf);
313 html("</td></tr>\n");
314 }
315
316 strbuf_release(&msgbuf);
317 strbuf_release(&graphbuf);
318 cgit_free_commitinfo(info);
319}
320
321static const char *disambiguate_ref(const char *ref, int *must_free_result)
322{
323 struct object_id oid;
324 struct strbuf longref = STRBUF_INIT;
325
326 strbuf_addf(&longref, "refs/heads/%s", ref);
327 if (get_sha1(longref.buf, oid.hash) == 0) {
328 *must_free_result = 1;
329 return strbuf_detach(&longref, NULL);
330 }
331
332 *must_free_result = 0;
333 strbuf_release(&longref);
334 return ref;
335}
336
337static char *next_token(char **src)
338{
339 char *result;
340
341 if (!src || !*src)
342 return NULL;
343 while (isspace(**src))
344 (*src)++;
345 if (!**src)
346 return NULL;
347 result = *src;
348 while (**src) {
349 if (isspace(**src)) {
350 **src = '\0';
351 (*src)++;
352 break;
353 }
354 (*src)++;
355 }
356 return result;
357}
358
359void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,
360 char *path, int pager, int commit_graph, int commit_sort)
361{
362 struct rev_info rev;
363 struct commit *commit;
364 struct argv_array rev_argv = ARGV_ARRAY_INIT;
365 int i, columns = commit_graph ? 4 : 3;
366 int must_free_tip = 0;
367
368 /* rev_argv.argv[0] will be ignored by setup_revisions */
369 argv_array_push(&rev_argv, "log_rev_setup");
370
371 if (!tip)
372 tip = ctx.qry.head;
373 tip = disambiguate_ref(tip, &must_free_tip);
374 argv_array_push(&rev_argv, tip);
375
376 if (grep && pattern && *pattern) {
377 pattern = xstrdup(pattern);
378 if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
379 !strcmp(grep, "committer")) {
380 argv_array_pushf(&rev_argv, "--%s=%s", grep, pattern);
381 } else if (!strcmp(grep, "range")) {
382 char *arg;
383 /* Split the pattern at whitespace and add each token
384 * as a revision expression. Do not accept other
385 * rev-list options. Also, replace the previously
386 * pushed tip (it's no longer relevant).
387 */
388 argv_array_pop(&rev_argv);
389 while ((arg = next_token(&pattern))) {
390 if (*arg == '-') {
391 fprintf(stderr, "Bad range expr: %s\n",
392 arg);
393 break;
394 }
395 argv_array_push(&rev_argv, arg);
396 }
397 }
398 }
399
400 if (!path || !ctx.cfg.enable_follow_links) {
401 /*
402 * If we don't have a path, "follow" is a no-op so make sure
403 * the variable is set to false to avoid needing to check
404 * both this and whether we have a path everywhere.
405 */
406 ctx.qry.follow = 0;
407 }
408
409 if (commit_graph && !ctx.qry.follow) {
410 argv_array_push(&rev_argv, "--graph");
411 argv_array_push(&rev_argv, "--color");
412 graph_set_column_colors(column_colors_html,
413 COLUMN_COLORS_HTML_MAX);
414 }
415
416 if (commit_sort == 1)
417 argv_array_push(&rev_argv, "--date-order");
418 else if (commit_sort == 2)
419 argv_array_push(&rev_argv, "--topo-order");
420
421 if (path && ctx.qry.follow)
422 argv_array_push(&rev_argv, "--follow");
423 argv_array_push(&rev_argv, "--");
424 if (path)
425 argv_array_push(&rev_argv, path);
426
427 init_revisions(&rev, NULL);
428 rev.abbrev = DEFAULT_ABBREV;
429 rev.commit_format = CMIT_FMT_DEFAULT;
430 rev.verbose_header = 1;
431 rev.show_root_diff = 0;
432 rev.ignore_missing = 1;
433 rev.simplify_history = 1;
434 setup_revisions(rev_argv.argc, rev_argv.argv, &rev, NULL);
435 load_ref_decorations(DECORATE_FULL_REFS);
436 rev.show_decorations = 1;
437 rev.grep_filter.regflags |= REG_ICASE;
438
439 rev.diffopt.detect_rename = 1;
440 rev.diffopt.rename_limit = ctx.cfg.renamelimit;
441 if (ctx.qry.ignorews)
442 DIFF_XDL_SET(&rev.diffopt, IGNORE_WHITESPACE);
443
444 compile_grep_patterns(&rev.grep_filter);
445 prepare_revision_walk(&rev);
446
447 if (pager) {
448 cgit_print_layout_start();
449 html("<table class='list nowrap'>");
450 }
451
452 html("<tr class='nohover'>");
453 if (commit_graph)
454 html("<th></th>");
455 else
456 html("<th class='left'>Age</th>");
457 html("<th class='left'>Commit message");
458 if (pager) {
459 html(" (");
460 cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
461 NULL, ctx.qry.head, ctx.qry.sha1,
462 ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
463 ctx.qry.search, ctx.qry.showmsg ? 0 : 1,
464 ctx.qry.follow);
465 html(")");
466 }
467 html("</th><th class='left'>Author</th>");
468 if (rev.graph)
469 html("<th class='left'>Age</th>");
470 if (ctx.repo->enable_log_filecount) {
471 html("<th class='left'>Files</th>");
472 columns++;
473 }
474 if (ctx.repo->enable_log_linecount) {
475 html("<th class='left'>Lines</th>");
476 columns++;
477 }
478 html("</tr>\n");
479
480 if (ofs<0)
481 ofs = 0;
482
483 for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; /* nop */) {
484 if (show_commit(commit, &rev))
485 i++;
486 free_commit_buffer(commit);
487 free_commit_list(commit->parents);
488 commit->parents = NULL;
489 }
490
491 for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; /* nop */) {
492 /*
493 * In "follow" mode, we must count the files and lines the
494 * first time we invoke diff on a given commit, and we need
495 * to do that to see if the commit touches the path we care
496 * about, so we do it in show_commit. Hence we must clear
497 * lines_counted here.
498 *
499 * This has the side effect of avoiding running diff twice
500 * when we are both following renames and showing file
501 * and/or line counts.
502 */
503 lines_counted = 0;
504 if (show_commit(commit, &rev)) {
505 i++;
506 print_commit(commit, &rev);
507 }
508 free_commit_buffer(commit);
509 free_commit_list(commit->parents);
510 commit->parents = NULL;
511 }
512 if (pager) {
513 html("</table><ul class='pager'>");
514 if (ofs > 0) {
515 html("<li>");
516 cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
517 ctx.qry.sha1, ctx.qry.vpath,
518 ofs - cnt, ctx.qry.grep,
519 ctx.qry.search, ctx.qry.showmsg,
520 ctx.qry.follow);
521 html("</li>");
522 }
523 if ((commit = get_revision(&rev)) != NULL) {
524 html("<li>");
525 cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
526 ctx.qry.sha1, ctx.qry.vpath,
527 ofs + cnt, ctx.qry.grep,
528 ctx.qry.search, ctx.qry.showmsg,
529 ctx.qry.follow);
530 html("</li>");
531 }
532 html("</ul>");
533 cgit_print_layout_end();
534 } else if ((commit = get_revision(&rev)) != NULL) {
535 htmlf("<tr class='nohover'><td colspan='%d'>", columns);
536 cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,
537 ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg,
538 ctx.qry.follow);
539 html("</td></tr>\n");
540 }
541
542 /* If we allocated tip then it is safe to cast away const. */
543 if (must_free_tip)
544 free((char*) tip);
545}