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 "strvec.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->oid, &pair->two->oid, &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 struct object_id oid_tag, peeled;
69 int is_annotated = 0;
70
71 strlcpy(buf, prettify_refname(deco->name), sizeof(buf));
72 switch(deco->type) {
73 case DECORATION_NONE:
74 /* If the git-core doesn't recognize it,
75 * don't display anything. */
76 break;
77 case DECORATION_REF_LOCAL:
78 cgit_log_link(buf, NULL, "branch-deco", buf, NULL,
79 ctx.qry.vpath, 0, NULL, NULL,
80 ctx.qry.showmsg, 0);
81 break;
82 case DECORATION_REF_TAG:
83 if (!read_ref(deco->name, &oid_tag) && !peel_iterated_oid(&oid_tag, &peeled))
84 is_annotated = !oideq(&oid_tag, &peeled);
85 cgit_tag_link(buf, NULL, is_annotated ? "tag-annotated-deco" : "tag-deco", buf);
86 break;
87 case DECORATION_REF_REMOTE:
88 if (!ctx.repo->enable_remote_branches)
89 break;
90 cgit_log_link(buf, NULL, "remote-deco", NULL,
91 oid_to_hex(&commit->object.oid),
92 ctx.qry.vpath, 0, NULL, NULL,
93 ctx.qry.showmsg, 0);
94 break;
95 default:
96 cgit_commit_link(buf, NULL, "deco", ctx.qry.head,
97 oid_to_hex(&commit->object.oid),
98 ctx.qry.vpath);
99 break;
100 }
101 deco = deco->next;
102 }
103 html("</span>");
104}
105
106static void handle_rename(struct diff_filepair *pair)
107{
108 /*
109 * After we have seen a rename, we generate links to the previous
110 * name of the file so that commit & diff views get fed the path
111 * that is correct for the commit they are showing, avoiding the
112 * need to walk the entire history leading back to every commit we
113 * show in order detect renames.
114 */
115 if (0 != strcmp(ctx.qry.vpath, pair->two->path)) {
116 free(ctx.qry.vpath);
117 ctx.qry.vpath = xstrdup(pair->two->path);
118 }
119 inspect_files(pair);
120}
121
122static int show_commit(struct commit *commit, struct rev_info *revs)
123{
124 struct commit_list *parents = commit->parents;
125 struct commit *parent;
126 int found = 0, saved_fmt;
127 struct diff_flags saved_flags = revs->diffopt.flags;
128
129 /* Always show if we're not in "follow" mode with a single file. */
130 if (!ctx.qry.follow)
131 return 1;
132
133 /*
134 * In "follow" mode, we don't show merges. This is consistent with
135 * "git log --follow -- <file>".
136 */
137 if (parents && parents->next)
138 return 0;
139
140 /*
141 * If this is the root commit, do what rev_info tells us.
142 */
143 if (!parents)
144 return revs->show_root_diff;
145
146 /* When we get here we have precisely one parent. */
147 parent = parents->item;
148 /* If we can't parse the commit, let print_commit() report an error. */
149 if (parse_commit(parent))
150 return 1;
151
152 files = 0;
153 add_lines = 0;
154 rem_lines = 0;
155
156 revs->diffopt.flags.recursive = 1;
157 diff_tree_oid(get_commit_tree_oid(parent),
158 get_commit_tree_oid(commit),
159 "", &revs->diffopt);
160 diffcore_std(&revs->diffopt);
161
162 found = !diff_queue_is_empty();
163 saved_fmt = revs->diffopt.output_format;
164 revs->diffopt.output_format = DIFF_FORMAT_CALLBACK;
165 revs->diffopt.format_callback = cgit_diff_tree_cb;
166 revs->diffopt.format_callback_data = handle_rename;
167 diff_flush(&revs->diffopt);
168 revs->diffopt.output_format = saved_fmt;
169 revs->diffopt.flags = saved_flags;
170
171 lines_counted = 1;
172 return found;
173}
174
175static void print_commit(struct commit *commit, struct rev_info *revs)
176{
177 struct commitinfo *info;
178 int columns = revs->graph ? 4 : 3;
179 struct strbuf graphbuf = STRBUF_INIT;
180 struct strbuf msgbuf = STRBUF_INIT;
181
182 if (ctx.repo->enable_log_filecount)
183 columns++;
184 if (ctx.repo->enable_log_linecount)
185 columns++;
186
187 if (revs->graph) {
188 /* Advance graph until current commit */
189 while (!graph_next_line(revs->graph, &graphbuf)) {
190 /* Print graph segment in otherwise empty table row */
191 html("<tr class='nohover'><td class='commitgraph'>");
192 html(graphbuf.buf);
193 htmlf("</td><td colspan='%d' /></tr>\n", columns);
194 strbuf_setlen(&graphbuf, 0);
195 }
196 /* Current commit's graph segment is now ready in graphbuf */
197 }
198
199 info = cgit_parse_commit(commit);
200 htmlf("<tr%s>", ctx.qry.showmsg ? " class='logheader'" : "");
201
202 if (revs->graph) {
203 /* Print graph segment for current commit */
204 html("<td class='commitgraph'>");
205 html(graphbuf.buf);
206 html("</td>");
207 strbuf_setlen(&graphbuf, 0);
208 }
209 else {
210 html("<td>");
211 cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
212 html("</td>");
213 }
214
215 htmlf("<td%s>", ctx.qry.showmsg ? " class='logsubject'" : "");
216 if (ctx.qry.showmsg) {
217 /* line-wrap long commit subjects instead of truncating them */
218 size_t subject_len = strlen(info->subject);
219
220 if (subject_len > ctx.cfg.max_msg_len &&
221 ctx.cfg.max_msg_len >= 15) {
222 /* symbol for signaling line-wrap (in PAGE_ENCODING) */
223 const char wrap_symbol[] = { ' ', 0xE2, 0x86, 0xB5, 0 };
224 int i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
225
226 /* Rewind i to preceding space character */
227 while (i > 0 && !isspace(info->subject[i]))
228 --i;
229 if (!i) /* Oops, zero spaces. Reset i */
230 i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
231
232 /* add remainder starting at i to msgbuf */
233 strbuf_add(&msgbuf, info->subject + i, subject_len - i);
234 strbuf_trim(&msgbuf);
235 strbuf_add(&msgbuf, "\n\n", 2);
236
237 /* Place wrap_symbol at position i in info->subject */
238 strlcpy(info->subject + i, wrap_symbol, subject_len - i + 1);
239 }
240 }
241 cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
242 oid_to_hex(&commit->object.oid), ctx.qry.vpath);
243 show_commit_decorations(commit);
244 html("</td><td>");
245 cgit_open_filter(ctx.repo->email_filter, info->author_email, "log");
246 html_txt(info->author);
247 cgit_close_filter(ctx.repo->email_filter);
248
249 if (revs->graph) {
250 html("</td><td>");
251 cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
252 }
253
254 if (!lines_counted && (ctx.repo->enable_log_filecount ||
255 ctx.repo->enable_log_linecount)) {
256 files = 0;
257 add_lines = 0;
258 rem_lines = 0;
259 cgit_diff_commit(commit, inspect_files, ctx.qry.vpath);
260 }
261
262 if (ctx.repo->enable_log_filecount)
263 htmlf("</td><td>%d", files);
264 if (ctx.repo->enable_log_linecount)
265 htmlf("</td><td><span class='deletions'>-%d</span>/"
266 "<span class='insertions'>+%d</span>", rem_lines, add_lines);
267
268 html("</td></tr>\n");
269
270 if ((revs->graph && !graph_is_commit_finished(revs->graph))
271 || ctx.qry.showmsg) { /* Print a second table row */
272 html("<tr class='nohover-highlight'>");
273
274 if (ctx.qry.showmsg) {
275 /* Concatenate commit message + notes in msgbuf */
276 if (info->msg && *(info->msg)) {
277 strbuf_addstr(&msgbuf, info->msg);
278 strbuf_addch(&msgbuf, '\n');
279 }
280 format_display_notes(&commit->object.oid,
281 &msgbuf, PAGE_ENCODING, 0);
282 strbuf_addch(&msgbuf, '\n');
283 strbuf_ltrim(&msgbuf);
284 }
285
286 if (revs->graph) {
287 int lines = 0;
288
289 /* Calculate graph padding */
290 if (ctx.qry.showmsg) {
291 /* Count #lines in commit message + notes */
292 const char *p = msgbuf.buf;
293 lines = 1;
294 while ((p = strchr(p, '\n'))) {
295 p++;
296 lines++;
297 }
298 }
299
300 /* Print graph padding */
301 html("<td class='commitgraph'>");
302 while (lines > 0 || !graph_is_commit_finished(revs->graph)) {
303 if (graphbuf.len)
304 html("\n");
305 strbuf_setlen(&graphbuf, 0);
306 graph_next_line(revs->graph, &graphbuf);
307 html(graphbuf.buf);
308 lines--;
309 }
310 html("</td>\n");
311 }
312 else
313 html("<td/>"); /* Empty 'Age' column */
314
315 /* Print msgbuf into remainder of table row */
316 htmlf("<td colspan='%d'%s>\n", columns - (revs->graph ? 1 : 0),
317 ctx.qry.showmsg ? " class='logmsg'" : "");
318 html_txt(msgbuf.buf);
319 html("</td></tr>\n");
320 }
321
322 strbuf_release(&msgbuf);
323 strbuf_release(&graphbuf);
324 cgit_free_commitinfo(info);
325}
326
327static const char *disambiguate_ref(const char *ref, int *must_free_result)
328{
329 struct object_id oid;
330 struct strbuf longref = STRBUF_INIT;
331
332 strbuf_addf(&longref, "refs/heads/%s", ref);
333 if (get_oid(longref.buf, &oid) == 0) {
334 *must_free_result = 1;
335 return strbuf_detach(&longref, NULL);
336 }
337
338 *must_free_result = 0;
339 strbuf_release(&longref);
340 return ref;
341}
342
343static char *next_token(char **src)
344{
345 char *result;
346
347 if (!src || !*src)
348 return NULL;
349 while (isspace(**src))
350 (*src)++;
351 if (!**src)
352 return NULL;
353 result = *src;
354 while (**src) {
355 if (isspace(**src)) {
356 **src = '\0';
357 (*src)++;
358 break;
359 }
360 (*src)++;
361 }
362 return result;
363}
364
365void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,
366 const char *path, int pager, int commit_graph, int commit_sort)
367{
368 struct rev_info rev;
369 struct commit *commit;
370 struct strvec rev_argv = STRVEC_INIT;
371 int i, columns = commit_graph ? 4 : 3;
372 int must_free_tip = 0;
373
374 /* rev_argv.argv[0] will be ignored by setup_revisions */
375 strvec_push(&rev_argv, "log_rev_setup");
376
377 if (!tip)
378 tip = ctx.qry.head;
379 tip = disambiguate_ref(tip, &must_free_tip);
380 strvec_push(&rev_argv, tip);
381
382 if (grep && pattern && *pattern) {
383 pattern = xstrdup(pattern);
384 if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
385 !strcmp(grep, "committer")) {
386 strvec_pushf(&rev_argv, "--%s=%s", grep, pattern);
387 } else if (!strcmp(grep, "range")) {
388 char *arg;
389 /* Split the pattern at whitespace and add each token
390 * as a revision expression. Do not accept other
391 * rev-list options. Also, replace the previously
392 * pushed tip (it's no longer relevant).
393 */
394 strvec_pop(&rev_argv);
395 while ((arg = next_token(&pattern))) {
396 if (*arg == '-') {
397 fprintf(stderr, "Bad range expr: %s\n",
398 arg);
399 break;
400 }
401 strvec_push(&rev_argv, arg);
402 }
403 }
404 }
405
406 if (!path || !ctx.cfg.enable_follow_links) {
407 /*
408 * If we don't have a path, "follow" is a no-op so make sure
409 * the variable is set to false to avoid needing to check
410 * both this and whether we have a path everywhere.
411 */
412 ctx.qry.follow = 0;
413 }
414
415 if (commit_graph && !ctx.qry.follow) {
416 strvec_push(&rev_argv, "--graph");
417 strvec_push(&rev_argv, "--color");
418 graph_set_column_colors(column_colors_html,
419 COLUMN_COLORS_HTML_MAX);
420 }
421
422 if (commit_sort == 1)
423 strvec_push(&rev_argv, "--date-order");
424 else if (commit_sort == 2)
425 strvec_push(&rev_argv, "--topo-order");
426
427 if (path && ctx.qry.follow)
428 strvec_push(&rev_argv, "--follow");
429 strvec_push(&rev_argv, "--");
430 if (path)
431 strvec_push(&rev_argv, path);
432
433 init_revisions(&rev, NULL);
434 rev.abbrev = DEFAULT_ABBREV;
435 rev.commit_format = CMIT_FMT_DEFAULT;
436 rev.verbose_header = 1;
437 rev.show_root_diff = 0;
438 rev.ignore_missing = 1;
439 rev.simplify_history = 1;
440 setup_revisions(rev_argv.nr, rev_argv.v, &rev, NULL);
441 load_ref_decorations(NULL, DECORATE_FULL_REFS);
442 rev.show_decorations = 1;
443 rev.grep_filter.ignore_case = 1;
444
445 rev.diffopt.detect_rename = 1;
446 rev.diffopt.rename_limit = ctx.cfg.renamelimit;
447 if (ctx.qry.ignorews)
448 DIFF_XDL_SET(&rev.diffopt, IGNORE_WHITESPACE);
449
450 compile_grep_patterns(&rev.grep_filter);
451 prepare_revision_walk(&rev);
452
453 if (pager) {
454 cgit_print_layout_start();
455 html("<table class='list nowrap'>");
456 }
457
458 html("<tr class='nohover'>");
459 if (commit_graph)
460 html("<th></th>");
461 else
462 html("<th class='left'>Age</th>");
463 html("<th class='left'>Commit message");
464 if (pager) {
465 html(" (");
466 cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
467 NULL, ctx.qry.head, ctx.qry.oid,
468 ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
469 ctx.qry.search, ctx.qry.showmsg ? 0 : 1,
470 ctx.qry.follow);
471 html(")");
472 }
473 html("</th><th class='left'>Author</th>");
474 if (rev.graph)
475 html("<th class='left'>Age</th>");
476 if (ctx.repo->enable_log_filecount) {
477 html("<th class='left'>Files</th>");
478 columns++;
479 }
480 if (ctx.repo->enable_log_linecount) {
481 html("<th class='left'>Lines</th>");
482 columns++;
483 }
484 html("</tr>\n");
485
486 if (ofs<0)
487 ofs = 0;
488
489 for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; /* nop */) {
490 if (show_commit(commit, &rev))
491 i++;
492 free_commit_buffer(the_repository->parsed_objects, commit);
493 free_commit_list(commit->parents);
494 commit->parents = NULL;
495 }
496
497 for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; /* nop */) {
498 /*
499 * In "follow" mode, we must count the files and lines the
500 * first time we invoke diff on a given commit, and we need
501 * to do that to see if the commit touches the path we care
502 * about, so we do it in show_commit. Hence we must clear
503 * lines_counted here.
504 *
505 * This has the side effect of avoiding running diff twice
506 * when we are both following renames and showing file
507 * and/or line counts.
508 */
509 lines_counted = 0;
510 if (show_commit(commit, &rev)) {
511 i++;
512 print_commit(commit, &rev);
513 }
514 free_commit_buffer(the_repository->parsed_objects, commit);
515 free_commit_list(commit->parents);
516 commit->parents = NULL;
517 }
518 if (pager) {
519 html("</table><ul class='pager'>");
520 if (ofs > 0) {
521 html("<li>");
522 cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
523 ctx.qry.oid, ctx.qry.vpath,
524 ofs - cnt, ctx.qry.grep,
525 ctx.qry.search, ctx.qry.showmsg,
526 ctx.qry.follow);
527 html("</li>");
528 }
529 if ((commit = get_revision(&rev)) != NULL) {
530 html("<li>");
531 cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
532 ctx.qry.oid, ctx.qry.vpath,
533 ofs + cnt, ctx.qry.grep,
534 ctx.qry.search, ctx.qry.showmsg,
535 ctx.qry.follow);
536 html("</li>");
537 }
538 html("</ul>");
539 cgit_print_layout_end();
540 } else if ((commit = get_revision(&rev)) != NULL) {
541 htmlf("<tr class='nohover'><td colspan='%d'>", columns);
542 cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,
543 ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg,
544 ctx.qry.follow);
545 html("</td></tr>\n");
546 }
547
548 /* If we allocated tip then it is safe to cast away const. */
549 if (must_free_tip)
550 free((char*) tip);
551}