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->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 peeled;
69 int is_annotated = 0;
70 strncpy(buf, prettify_refname(deco->name), sizeof(buf) - 1);
71 switch(deco->type) {
72 case DECORATION_NONE:
73 /* If the git-core doesn't recognize it,
74 * don't display anything. */
75 break;
76 case DECORATION_REF_LOCAL:
77 cgit_log_link(buf, NULL, "branch-deco", buf, NULL,
78 ctx.qry.vpath, 0, NULL, NULL,
79 ctx.qry.showmsg, 0);
80 break;
81 case DECORATION_REF_TAG:
82 if (!peel_ref(deco->name, &peeled))
83 is_annotated = !oidcmp(&commit->object.oid, &peeled);
84 cgit_tag_link(buf, NULL, is_annotated ? "tag-annotated-deco" : "tag-deco", buf);
85 break;
86 case DECORATION_REF_REMOTE:
87 if (!ctx.repo->enable_remote_branches)
88 break;
89 cgit_log_link(buf, NULL, "remote-deco", NULL,
90 oid_to_hex(&commit->object.oid),
91 ctx.qry.vpath, 0, NULL, NULL,
92 ctx.qry.showmsg, 0);
93 break;
94 default:
95 cgit_commit_link(buf, NULL, "deco", ctx.qry.head,
96 oid_to_hex(&commit->object.oid),
97 ctx.qry.vpath);
98 break;
99 }
100 deco = deco->next;
101 }
102 html("</span>");
103}
104
105static void handle_rename(struct diff_filepair *pair)
106{
107 /*
108 * After we have seen a rename, we generate links to the previous
109 * name of the file so that commit & diff views get fed the path
110 * that is correct for the commit they are showing, avoiding the
111 * need to walk the entire history leading back to every commit we
112 * show in order detect renames.
113 */
114 if (0 != strcmp(ctx.qry.vpath, pair->two->path)) {
115 free(ctx.qry.vpath);
116 ctx.qry.vpath = xstrdup(pair->two->path);
117 }
118 inspect_files(pair);
119}
120
121static int show_commit(struct commit *commit, struct rev_info *revs)
122{
123 struct commit_list *parents = commit->parents;
124 struct commit *parent;
125 int found = 0, saved_fmt;
126 struct diff_flags saved_flags = revs->diffopt.flags;
127
128 /* Always show if we're not in "follow" mode with a single file. */
129 if (!ctx.qry.follow)
130 return 1;
131
132 /*
133 * In "follow" mode, we don't show merges. This is consistent with
134 * "git log --follow -- <file>".
135 */
136 if (parents && parents->next)
137 return 0;
138
139 /*
140 * If this is the root commit, do what rev_info tells us.
141 */
142 if (!parents)
143 return revs->show_root_diff;
144
145 /* When we get here we have precisely one parent. */
146 parent = parents->item;
147 /* If we can't parse the commit, let print_commit() report an error. */
148 if (parse_commit(parent))
149 return 1;
150
151 files = 0;
152 add_lines = 0;
153 rem_lines = 0;
154
155 revs->diffopt.flags.recursive = 1;
156 diff_tree_oid(&parent->maybe_tree->object.oid,
157 &commit->maybe_tree->object.oid,
158 "", &revs->diffopt);
159 diffcore_std(&revs->diffopt);
160
161 found = !diff_queue_is_empty();
162 saved_fmt = revs->diffopt.output_format;
163 revs->diffopt.output_format = DIFF_FORMAT_CALLBACK;
164 revs->diffopt.format_callback = cgit_diff_tree_cb;
165 revs->diffopt.format_callback_data = handle_rename;
166 diff_flush(&revs->diffopt);
167 revs->diffopt.output_format = saved_fmt;
168 revs->diffopt.flags = saved_flags;
169
170 lines_counted = 1;
171 return found;
172}
173
174static void print_commit(struct commit *commit, struct rev_info *revs)
175{
176 struct commitinfo *info;
177 int columns = revs->graph ? 4 : 3;
178 struct strbuf graphbuf = STRBUF_INIT;
179 struct strbuf msgbuf = STRBUF_INIT;
180
181 if (ctx.repo->enable_log_filecount)
182 columns++;
183 if (ctx.repo->enable_log_linecount)
184 columns++;
185
186 if (revs->graph) {
187 /* Advance graph until current commit */
188 while (!graph_next_line(revs->graph, &graphbuf)) {
189 /* Print graph segment in otherwise empty table row */
190 html("<tr class='nohover'><td class='commitgraph'>");
191 html(graphbuf.buf);
192 htmlf("</td><td colspan='%d' /></tr>\n", columns);
193 strbuf_setlen(&graphbuf, 0);
194 }
195 /* Current commit's graph segment is now ready in graphbuf */
196 }
197
198 info = cgit_parse_commit(commit);
199 htmlf("<tr%s>", ctx.qry.showmsg ? " class='logheader'" : "");
200
201 if (revs->graph) {
202 /* Print graph segment for current commit */
203 html("<td class='commitgraph'>");
204 html(graphbuf.buf);
205 html("</td>");
206 strbuf_setlen(&graphbuf, 0);
207 }
208 else {
209 html("<td>");
210 cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
211 html("</td>");
212 }
213
214 htmlf("<td%s>", ctx.qry.showmsg ? " class='logsubject'" : "");
215 if (ctx.qry.showmsg) {
216 /* line-wrap long commit subjects instead of truncating them */
217 size_t subject_len = strlen(info->subject);
218
219 if (subject_len > ctx.cfg.max_msg_len &&
220 ctx.cfg.max_msg_len >= 15) {
221 /* symbol for signaling line-wrap (in PAGE_ENCODING) */
222 const char wrap_symbol[] = { ' ', 0xE2, 0x86, 0xB5, 0 };
223 int i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
224
225 /* Rewind i to preceding space character */
226 while (i > 0 && !isspace(info->subject[i]))
227 --i;
228 if (!i) /* Oops, zero spaces. Reset i */
229 i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
230
231 /* add remainder starting at i to msgbuf */
232 strbuf_add(&msgbuf, info->subject + i, subject_len - i);
233 strbuf_trim(&msgbuf);
234 strbuf_add(&msgbuf, "\n\n", 2);
235
236 /* Place wrap_symbol at position i in info->subject */
237 strcpy(info->subject + i, wrap_symbol);
238 }
239 }
240 cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
241 oid_to_hex(&commit->object.oid), ctx.qry.vpath);
242 show_commit_decorations(commit);
243 html("</td><td>");
244 cgit_open_filter(ctx.repo->email_filter, info->author_email, "log");
245 html_txt(info->author);
246 cgit_close_filter(ctx.repo->email_filter);
247
248 if (revs->graph) {
249 html("</td><td>");
250 cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
251 }
252
253 if (!lines_counted && (ctx.repo->enable_log_filecount ||
254 ctx.repo->enable_log_linecount)) {
255 files = 0;
256 add_lines = 0;
257 rem_lines = 0;
258 cgit_diff_commit(commit, inspect_files, ctx.qry.vpath);
259 }
260
261 if (ctx.repo->enable_log_filecount)
262 htmlf("</td><td>%d", files);
263 if (ctx.repo->enable_log_linecount)
264 htmlf("</td><td><span class='deletions'>-%d</span>/"
265 "<span class='insertions'>+%d</span>", rem_lines, add_lines);
266
267 html("</td></tr>\n");
268
269 if ((revs->graph && !graph_is_commit_finished(revs->graph))
270 || ctx.qry.showmsg) { /* Print a second table row */
271 html("<tr class='nohover-highlight'>");
272
273 if (ctx.qry.showmsg) {
274 /* Concatenate commit message + notes in msgbuf */
275 if (info->msg && *(info->msg)) {
276 strbuf_addstr(&msgbuf, info->msg);
277 strbuf_addch(&msgbuf, '\n');
278 }
279 format_display_notes(&commit->object.oid,
280 &msgbuf, PAGE_ENCODING, 0);
281 strbuf_addch(&msgbuf, '\n');
282 strbuf_ltrim(&msgbuf);
283 }
284
285 if (revs->graph) {
286 int lines = 0;
287
288 /* Calculate graph padding */
289 if (ctx.qry.showmsg) {
290 /* Count #lines in commit message + notes */
291 const char *p = msgbuf.buf;
292 lines = 1;
293 while ((p = strchr(p, '\n'))) {
294 p++;
295 lines++;
296 }
297 }
298
299 /* Print graph padding */
300 html("<td class='commitgraph'>");
301 while (lines > 0 || !graph_is_commit_finished(revs->graph)) {
302 if (graphbuf.len)
303 html("\n");
304 strbuf_setlen(&graphbuf, 0);
305 graph_next_line(revs->graph, &graphbuf);
306 html(graphbuf.buf);
307 lines--;
308 }
309 html("</td>\n");
310 }
311 else
312 html("<td/>"); /* Empty 'Age' column */
313
314 /* Print msgbuf into remainder of table row */
315 htmlf("<td colspan='%d'%s>\n", columns - (revs->graph ? 1 : 0),
316 ctx.qry.showmsg ? " class='logmsg'" : "");
317 html_txt(msgbuf.buf);
318 html("</td></tr>\n");
319 }
320
321 strbuf_release(&msgbuf);
322 strbuf_release(&graphbuf);
323 cgit_free_commitinfo(info);
324}
325
326static const char *disambiguate_ref(const char *ref, int *must_free_result)
327{
328 struct object_id oid;
329 struct strbuf longref = STRBUF_INIT;
330
331 strbuf_addf(&longref, "refs/heads/%s", ref);
332 if (get_oid(longref.buf, &oid) == 0) {
333 *must_free_result = 1;
334 return strbuf_detach(&longref, NULL);
335 }
336
337 *must_free_result = 0;
338 strbuf_release(&longref);
339 return ref;
340}
341
342static char *next_token(char **src)
343{
344 char *result;
345
346 if (!src || !*src)
347 return NULL;
348 while (isspace(**src))
349 (*src)++;
350 if (!**src)
351 return NULL;
352 result = *src;
353 while (**src) {
354 if (isspace(**src)) {
355 **src = '\0';
356 (*src)++;
357 break;
358 }
359 (*src)++;
360 }
361 return result;
362}
363
364void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,
365 char *path, int pager, int commit_graph, int commit_sort)
366{
367 struct rev_info rev;
368 struct commit *commit;
369 struct argv_array rev_argv = ARGV_ARRAY_INIT;
370 int i, columns = commit_graph ? 4 : 3;
371 int must_free_tip = 0;
372
373 /* rev_argv.argv[0] will be ignored by setup_revisions */
374 argv_array_push(&rev_argv, "log_rev_setup");
375
376 if (!tip)
377 tip = ctx.qry.head;
378 tip = disambiguate_ref(tip, &must_free_tip);
379 argv_array_push(&rev_argv, tip);
380
381 if (grep && pattern && *pattern) {
382 pattern = xstrdup(pattern);
383 if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
384 !strcmp(grep, "committer")) {
385 argv_array_pushf(&rev_argv, "--%s=%s", grep, pattern);
386 } else if (!strcmp(grep, "range")) {
387 char *arg;
388 /* Split the pattern at whitespace and add each token
389 * as a revision expression. Do not accept other
390 * rev-list options. Also, replace the previously
391 * pushed tip (it's no longer relevant).
392 */
393 argv_array_pop(&rev_argv);
394 while ((arg = next_token(&pattern))) {
395 if (*arg == '-') {
396 fprintf(stderr, "Bad range expr: %s\n",
397 arg);
398 break;
399 }
400 argv_array_push(&rev_argv, arg);
401 }
402 }
403 }
404
405 if (!path || !ctx.cfg.enable_follow_links) {
406 /*
407 * If we don't have a path, "follow" is a no-op so make sure
408 * the variable is set to false to avoid needing to check
409 * both this and whether we have a path everywhere.
410 */
411 ctx.qry.follow = 0;
412 }
413
414 if (commit_graph && !ctx.qry.follow) {
415 argv_array_push(&rev_argv, "--graph");
416 argv_array_push(&rev_argv, "--color");
417 graph_set_column_colors(column_colors_html,
418 COLUMN_COLORS_HTML_MAX);
419 }
420
421 if (commit_sort == 1)
422 argv_array_push(&rev_argv, "--date-order");
423 else if (commit_sort == 2)
424 argv_array_push(&rev_argv, "--topo-order");
425
426 if (path && ctx.qry.follow)
427 argv_array_push(&rev_argv, "--follow");
428 argv_array_push(&rev_argv, "--");
429 if (path)
430 argv_array_push(&rev_argv, path);
431
432 init_revisions(&rev, NULL);
433 rev.abbrev = DEFAULT_ABBREV;
434 rev.commit_format = CMIT_FMT_DEFAULT;
435 rev.verbose_header = 1;
436 rev.show_root_diff = 0;
437 rev.ignore_missing = 1;
438 rev.simplify_history = 1;
439 setup_revisions(rev_argv.argc, rev_argv.argv, &rev, NULL);
440 load_ref_decorations(NULL, DECORATE_FULL_REFS);
441 rev.show_decorations = 1;
442 rev.grep_filter.ignore_case = 1;
443
444 rev.diffopt.detect_rename = 1;
445 rev.diffopt.rename_limit = ctx.cfg.renamelimit;
446 if (ctx.qry.ignorews)
447 DIFF_XDL_SET(&rev.diffopt, IGNORE_WHITESPACE);
448
449 compile_grep_patterns(&rev.grep_filter);
450 prepare_revision_walk(&rev);
451
452 if (pager) {
453 cgit_print_layout_start();
454 html("<table class='list nowrap'>");
455 }
456
457 html("<tr class='nohover'>");
458 if (commit_graph)
459 html("<th></th>");
460 else
461 html("<th class='left'>Age</th>");
462 html("<th class='left'>Commit message");
463 if (pager) {
464 html(" (");
465 cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
466 NULL, ctx.qry.head, ctx.qry.sha1,
467 ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
468 ctx.qry.search, ctx.qry.showmsg ? 0 : 1,
469 ctx.qry.follow);
470 html(")");
471 }
472 html("</th><th class='left'>Author</th>");
473 if (rev.graph)
474 html("<th class='left'>Age</th>");
475 if (ctx.repo->enable_log_filecount) {
476 html("<th class='left'>Files</th>");
477 columns++;
478 }
479 if (ctx.repo->enable_log_linecount) {
480 html("<th class='left'>Lines</th>");
481 columns++;
482 }
483 html("</tr>\n");
484
485 if (ofs<0)
486 ofs = 0;
487
488 for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; /* nop */) {
489 if (show_commit(commit, &rev))
490 i++;
491 free_commit_buffer(commit);
492 free_commit_list(commit->parents);
493 commit->parents = NULL;
494 }
495
496 for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; /* nop */) {
497 /*
498 * In "follow" mode, we must count the files and lines the
499 * first time we invoke diff on a given commit, and we need
500 * to do that to see if the commit touches the path we care
501 * about, so we do it in show_commit. Hence we must clear
502 * lines_counted here.
503 *
504 * This has the side effect of avoiding running diff twice
505 * when we are both following renames and showing file
506 * and/or line counts.
507 */
508 lines_counted = 0;
509 if (show_commit(commit, &rev)) {
510 i++;
511 print_commit(commit, &rev);
512 }
513 free_commit_buffer(commit);
514 free_commit_list(commit->parents);
515 commit->parents = NULL;
516 }
517 if (pager) {
518 html("</table><ul class='pager'>");
519 if (ofs > 0) {
520 html("<li>");
521 cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
522 ctx.qry.sha1, ctx.qry.vpath,
523 ofs - cnt, ctx.qry.grep,
524 ctx.qry.search, ctx.qry.showmsg,
525 ctx.qry.follow);
526 html("</li>");
527 }
528 if ((commit = get_revision(&rev)) != NULL) {
529 html("<li>");
530 cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
531 ctx.qry.sha1, ctx.qry.vpath,
532 ofs + cnt, ctx.qry.grep,
533 ctx.qry.search, ctx.qry.showmsg,
534 ctx.qry.follow);
535 html("</li>");
536 }
537 html("</ul>");
538 cgit_print_layout_end();
539 } else if ((commit = get_revision(&rev)) != NULL) {
540 htmlf("<tr class='nohover'><td colspan='%d'>", columns);
541 cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,
542 ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg,
543 ctx.qry.follow);
544 html("</td></tr>\n");
545 }
546
547 /* If we allocated tip then it is safe to cast away const. */
548 if (must_free_tip)
549 free((char*) tip);
550}