gitweb.ps.run Git - ps-cgit/blob - ui-log.c

   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
  15 static int files, add_lines, rem_lines, lines_counted;
  16
  17 /*
  18  * The list of available column colors in the commit graph.
  19  */
  20 static 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
  32 static 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
  44 static 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
  57 void 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                 if (starts_with(deco->name, "refs/heads/")) {
  69                         strncpy(buf, deco->name + 11, sizeof(buf) - 1);
  70                         cgit_log_link(buf, NULL, "branch-deco", buf, NULL,
  71                                       ctx.qry.vpath, 0, NULL, NULL,
  72                                       ctx.qry.showmsg, 0);
  73                 }
  74                 else if (starts_with(deco->name, "tag: refs/tags/")) {
  75                         strncpy(buf, deco->name + 15, sizeof(buf) - 1);
  76                         cgit_tag_link(buf, NULL, "tag-deco", buf);
  77                 }
  78                 else if (starts_with(deco->name, "refs/tags/")) {
  79                         strncpy(buf, deco->name + 10, sizeof(buf) - 1);
  80                         cgit_tag_link(buf, NULL, "tag-deco", buf);
  81                 }
  82                 else if (starts_with(deco->name, "refs/remotes/")) {
  83                         if (!ctx.repo->enable_remote_branches)
  84                                 goto next;
  85                         strncpy(buf, deco->name + 13, sizeof(buf) - 1);
  86                         cgit_log_link(buf, NULL, "remote-deco", NULL,
  87                                       oid_to_hex(&commit->object.oid),
  88                                       ctx.qry.vpath, 0, NULL, NULL,
  89                                       ctx.qry.showmsg, 0);
  90                 }
  91                 else {
  92                         strncpy(buf, deco->name, sizeof(buf) - 1);
  93                         cgit_commit_link(buf, NULL, "deco", ctx.qry.head,
  94                                          oid_to_hex(&commit->object.oid),
  95                                          ctx.qry.vpath);
  96                 }
  97 next:
  98                 deco = deco->next;
  99         }
 100         html("</span>");
 101 }
 102
 103 static void handle_rename(struct diff_filepair *pair)
 104 {
 105         /*
 106          * After we have seen a rename, we generate links to the previous
 107          * name of the file so that commit & diff views get fed the path
 108          * that is correct for the commit they are showing, avoiding the
 109          * need to walk the entire history leading back to every commit we
 110          * show in order detect renames.
 111          */
 112         if (0 != strcmp(ctx.qry.vpath, pair->two->path)) {
 113                 free(ctx.qry.vpath);
 114                 ctx.qry.vpath = xstrdup(pair->two->path);
 115         }
 116         inspect_files(pair);
 117 }
 118
 119 static int show_commit(struct commit *commit, struct rev_info *revs)
 120 {
 121         struct commit_list *parents = commit->parents;
 122         struct commit *parent;
 123         int found = 0, saved_fmt;
 124         unsigned saved_flags = revs->diffopt.flags;
 125
 126
 127         /* Always show if we're not in "follow" mode with a single file. */
 128         if (!ctx.qry.follow)
 129                 return 1;
 130
 131         /*
 132          * In "follow" mode, we don't show merges.  This is consistent with
 133          * "git log --follow -- <file>".
 134          */
 135         if (parents && parents->next)
 136                 return 0;
 137
 138         /*
 139          * If this is the root commit, do what rev_info tells us.
 140          */
 141         if (!parents)
 142                 return revs->show_root_diff;
 143
 144         /* When we get here we have precisely one parent. */
 145         parent = parents->item;
 146         /* If we can't parse the commit, let print_commit() report an error. */
 147         if (parse_commit(parent))
 148                 return 1;
 149
 150         files = 0;
 151         add_lines = 0;
 152         rem_lines = 0;
 153
 154         DIFF_OPT_SET(&revs->diffopt, RECURSIVE);
 155         diff_tree_sha1(parent->tree->object.oid.hash,
 156                        commit->tree->object.oid.hash,
 157                        "", &revs->diffopt);
 158         diffcore_std(&revs->diffopt);
 159
 160         found = !diff_queue_is_empty();
 161         saved_fmt = revs->diffopt.output_format;
 162         revs->diffopt.output_format = DIFF_FORMAT_CALLBACK;
 163         revs->diffopt.format_callback = cgit_diff_tree_cb;
 164         revs->diffopt.format_callback_data = handle_rename;
 165         diff_flush(&revs->diffopt);
 166         revs->diffopt.output_format = saved_fmt;
 167         revs->diffopt.flags = saved_flags;
 168
 169         lines_counted = 1;
 170         return found;
 171 }
 172
 173 static void print_commit(struct commit *commit, struct rev_info *revs)
 174 {
 175         struct commitinfo *info;
 176         int columns = revs->graph ? 4 : 3;
 177         struct strbuf graphbuf = STRBUF_INIT;
 178         struct strbuf msgbuf = STRBUF_INIT;
 179
 180         if (ctx.repo->enable_log_filecount)
 181                 columns++;
 182         if (ctx.repo->enable_log_linecount)
 183                 columns++;
 184
 185         if (revs->graph) {
 186                 /* Advance graph until current commit */
 187                 while (!graph_next_line(revs->graph, &graphbuf)) {
 188                         /* Print graph segment in otherwise empty table row */
 189                         html("<tr class='nohover'><td class='commitgraph'>");
 190                         html(graphbuf.buf);
 191                         htmlf("</td><td colspan='%d' /></tr>\n", columns);
 192                         strbuf_setlen(&graphbuf, 0);
 193                 }
 194                 /* Current commit's graph segment is now ready in graphbuf */
 195         }
 196
 197         info = cgit_parse_commit(commit);
 198         htmlf("<tr%s>", ctx.qry.showmsg ? " class='logheader'" : "");
 199
 200         if (revs->graph) {
 201                 /* Print graph segment for current commit */
 202                 html("<td class='commitgraph'>");
 203                 html(graphbuf.buf);
 204                 html("</td>");
 205                 strbuf_setlen(&graphbuf, 0);
 206         }
 207         else {
 208                 html("<td>");
 209                 cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
 210                 html("</td>");
 211         }
 212
 213         htmlf("<td%s>", ctx.qry.showmsg ? " class='logsubject'" : "");
 214         if (ctx.qry.showmsg) {
 215                 /* line-wrap long commit subjects instead of truncating them */
 216                 size_t subject_len = strlen(info->subject);
 217
 218                 if (subject_len > ctx.cfg.max_msg_len &&
 219                     ctx.cfg.max_msg_len >= 15) {
 220                         /* symbol for signaling line-wrap (in PAGE_ENCODING) */
 221                         const char wrap_symbol[] = { ' ', 0xE2, 0x86, 0xB5, 0 };
 222                         int i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
 223
 224                         /* Rewind i to preceding space character */
 225                         while (i > 0 && !isspace(info->subject[i]))
 226                                 --i;
 227                         if (!i) /* Oops, zero spaces. Reset i */
 228                                 i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
 229
 230                         /* add remainder starting at i to msgbuf */
 231                         strbuf_add(&msgbuf, info->subject + i, subject_len - i);
 232                         strbuf_trim(&msgbuf);
 233                         strbuf_add(&msgbuf, "\n\n", 2);
 234
 235                         /* Place wrap_symbol at position i in info->subject */
 236                         strcpy(info->subject + i, wrap_symbol);
 237                 }
 238         }
 239         cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
 240                          oid_to_hex(&commit->object.oid), ctx.qry.vpath);
 241         show_commit_decorations(commit);
 242         html("</td><td>");
 243         cgit_open_filter(ctx.repo->email_filter, info->author_email, "log");
 244         html_txt(info->author);
 245         cgit_close_filter(ctx.repo->email_filter);
 246
 247         if (revs->graph) {
 248                 html("</td><td>");
 249                 cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
 250         }
 251
 252         if (!lines_counted && (ctx.repo->enable_log_filecount ||
 253                                ctx.repo->enable_log_linecount)) {
 254                 files = 0;
 255                 add_lines = 0;
 256                 rem_lines = 0;
 257                 cgit_diff_commit(commit, inspect_files, ctx.qry.vpath);
 258         }
 259
 260         if (ctx.repo->enable_log_filecount)
 261                 htmlf("</td><td>%d", files);
 262         if (ctx.repo->enable_log_linecount)
 263                 htmlf("</td><td>-%d/+%d", rem_lines, add_lines);
 264
 265         html("</td></tr>\n");
 266
 267         if (revs->graph || ctx.qry.showmsg) { /* Print a second table row */
 268                 html("<tr class='nohover'>");
 269
 270                 if (ctx.qry.showmsg) {
 271                         /* Concatenate commit message + notes in msgbuf */
 272                         if (info->msg && *(info->msg)) {
 273                                 strbuf_addstr(&msgbuf, info->msg);
 274                                 strbuf_addch(&msgbuf, '\n');
 275                         }
 276                         format_display_notes(commit->object.oid.hash,
 277                                              &msgbuf, PAGE_ENCODING, 0);
 278                         strbuf_addch(&msgbuf, '\n');
 279                         strbuf_ltrim(&msgbuf);
 280                 }
 281
 282                 if (revs->graph) {
 283                         int lines = 0;
 284
 285                         /* Calculate graph padding */
 286                         if (ctx.qry.showmsg) {
 287                                 /* Count #lines in commit message + notes */
 288                                 const char *p = msgbuf.buf;
 289                                 lines = 1;
 290                                 while ((p = strchr(p, '\n'))) {
 291                                         p++;
 292                                         lines++;
 293                                 }
 294                         }
 295
 296                         /* Print graph padding */
 297                         html("<td class='commitgraph'>");
 298                         while (lines > 0 || !graph_is_commit_finished(revs->graph)) {
 299                                 if (graphbuf.len)
 300                                         html("\n");
 301                                 strbuf_setlen(&graphbuf, 0);
 302                                 graph_next_line(revs->graph, &graphbuf);
 303                                 html(graphbuf.buf);
 304                                 lines--;
 305                         }
 306                         html("</td>\n");
 307                 }
 308                 else
 309                         html("<td/>"); /* Empty 'Age' column */
 310
 311                 /* Print msgbuf into remainder of table row */
 312                 htmlf("<td colspan='%d'%s>\n", columns - (revs->graph ? 1 : 0),
 313                         ctx.qry.showmsg ? " class='logmsg'" : "");
 314                 html_txt(msgbuf.buf);
 315                 html("</td></tr>\n");
 316         }
 317
 318         strbuf_release(&msgbuf);
 319         strbuf_release(&graphbuf);
 320         cgit_free_commitinfo(info);
 321 }
 322
 323 static const char *disambiguate_ref(const char *ref, int *must_free_result)
 324 {
 325         struct object_id oid;
 326         struct strbuf longref = STRBUF_INIT;
 327
 328         strbuf_addf(&longref, "refs/heads/%s", ref);
 329         if (get_sha1(longref.buf, oid.hash) == 0) {
 330                 *must_free_result = 1;
 331                 return strbuf_detach(&longref, NULL);
 332         }
 333
 334         *must_free_result = 0;
 335         strbuf_release(&longref);
 336         return ref;
 337 }
 338
 339 static char *next_token(char **src)
 340 {
 341         char *result;
 342
 343         if (!src || !*src)
 344                 return NULL;
 345         while (isspace(**src))
 346                 (*src)++;
 347         if (!**src)
 348                 return NULL;
 349         result = *src;
 350         while (**src) {
 351                 if (isspace(**src)) {
 352                         **src = '\0';
 353                         (*src)++;
 354                         break;
 355                 }
 356                 (*src)++;
 357         }
 358         return result;
 359 }
 360
 361 void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,
 362                     char *path, int pager, int commit_graph, int commit_sort)
 363 {
 364         struct rev_info rev;
 365         struct commit *commit;
 366         struct argv_array rev_argv = ARGV_ARRAY_INIT;
 367         int i, columns = commit_graph ? 4 : 3;
 368         int must_free_tip = 0;
 369
 370         /* rev_argv.argv[0] will be ignored by setup_revisions */
 371         argv_array_push(&rev_argv, "log_rev_setup");
 372
 373         if (!tip)
 374                 tip = ctx.qry.head;
 375         tip = disambiguate_ref(tip, &must_free_tip);
 376         argv_array_push(&rev_argv, tip);
 377
 378         if (grep && pattern && *pattern) {
 379                 pattern = xstrdup(pattern);
 380                 if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
 381                     !strcmp(grep, "committer")) {
 382                         argv_array_pushf(&rev_argv, "--%s=%s", grep, pattern);
 383                 } else if (!strcmp(grep, "range")) {
 384                         char *arg;
 385                         /* Split the pattern at whitespace and add each token
 386                          * as a revision expression. Do not accept other
 387                          * rev-list options. Also, replace the previously
 388                          * pushed tip (it's no longer relevant).
 389                          */
 390                         argv_array_pop(&rev_argv);
 391                         while ((arg = next_token(&pattern))) {
 392                                 if (*arg == '-') {
 393                                         fprintf(stderr, "Bad range expr: %s\n",
 394                                                 arg);
 395                                         break;
 396                                 }
 397                                 argv_array_push(&rev_argv, arg);
 398                         }
 399                 }
 400         }
 401
 402         if (!path || !ctx.cfg.enable_follow_links) {
 403                 /*
 404                  * If we don't have a path, "follow" is a no-op so make sure
 405                  * the variable is set to false to avoid needing to check
 406                  * both this and whether we have a path everywhere.
 407                  */
 408                 ctx.qry.follow = 0;
 409         }
 410
 411         if (commit_graph && !ctx.qry.follow) {
 412                 argv_array_push(&rev_argv, "--graph");
 413                 argv_array_push(&rev_argv, "--color");
 414                 graph_set_column_colors(column_colors_html,
 415                                         COLUMN_COLORS_HTML_MAX);
 416         }
 417
 418         if (commit_sort == 1)
 419                 argv_array_push(&rev_argv, "--date-order");
 420         else if (commit_sort == 2)
 421                 argv_array_push(&rev_argv, "--topo-order");
 422
 423         if (path && ctx.qry.follow)
 424                 argv_array_push(&rev_argv, "--follow");
 425         argv_array_push(&rev_argv, "--");
 426         if (path)
 427                 argv_array_push(&rev_argv, path);
 428
 429         init_revisions(&rev, NULL);
 430         rev.abbrev = DEFAULT_ABBREV;
 431         rev.commit_format = CMIT_FMT_DEFAULT;
 432         rev.verbose_header = 1;
 433         rev.show_root_diff = 0;
 434         rev.ignore_missing = 1;
 435         rev.simplify_history = 1;
 436         setup_revisions(rev_argv.argc, rev_argv.argv, &rev, NULL);
 437         load_ref_decorations(DECORATE_FULL_REFS);
 438         rev.show_decorations = 1;
 439         rev.grep_filter.regflags |= REG_ICASE;
 440
 441         rev.diffopt.detect_rename = 1;
 442         rev.diffopt.rename_limit = ctx.cfg.renamelimit;
 443         if (ctx.qry.ignorews)
 444                 DIFF_XDL_SET(&rev.diffopt, IGNORE_WHITESPACE);
 445
 446         compile_grep_patterns(&rev.grep_filter);
 447         prepare_revision_walk(&rev);
 448
 449         if (pager) {
 450                 cgit_print_layout_start();
 451                 html("<table class='list nowrap'>");
 452         }
 453
 454         html("<tr class='nohover'>");
 455         if (commit_graph)
 456                 html("<th></th>");
 457         else
 458                 html("<th class='left'>Age</th>");
 459         html("<th class='left'>Commit message");
 460         if (pager) {
 461                 html(" (");
 462                 cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
 463                               NULL, ctx.qry.head, ctx.qry.sha1,
 464                               ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
 465                               ctx.qry.search, ctx.qry.showmsg ? 0 : 1,
 466                               ctx.qry.follow);
 467                 html(")");
 468         }
 469         html("</th><th class='left'>Author</th>");
 470         if (rev.graph)
 471                 html("<th class='left'>Age</th>");
 472         if (ctx.repo->enable_log_filecount) {
 473                 html("<th class='left'>Files</th>");
 474                 columns++;
 475         }
 476         if (ctx.repo->enable_log_linecount) {
 477                 html("<th class='left'>Lines</th>");
 478                 columns++;
 479         }
 480         html("</tr>\n");
 481
 482         if (ofs<0)
 483                 ofs = 0;
 484
 485         for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; /* nop */) {
 486                 if (show_commit(commit, &rev))
 487                         i++;
 488                 free_commit_buffer(commit);
 489                 free_commit_list(commit->parents);
 490                 commit->parents = NULL;
 491         }
 492
 493         for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; /* nop */) {
 494                 /*
 495                  * In "follow" mode, we must count the files and lines the
 496                  * first time we invoke diff on a given commit, and we need
 497                  * to do that to see if the commit touches the path we care
 498                  * about, so we do it in show_commit.  Hence we must clear
 499                  * lines_counted here.
 500                  *
 501                  * This has the side effect of avoiding running diff twice
 502                  * when we are both following renames and showing file
 503                  * and/or line counts.
 504                  */
 505                 lines_counted = 0;
 506                 if (show_commit(commit, &rev)) {
 507                         i++;
 508                         print_commit(commit, &rev);
 509                 }
 510                 free_commit_buffer(commit);
 511                 free_commit_list(commit->parents);
 512                 commit->parents = NULL;
 513         }
 514         if (pager) {
 515                 html("</table><ul class='pager'>");
 516                 if (ofs > 0) {
 517                         html("<li>");
 518                         cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
 519                                       ctx.qry.sha1, ctx.qry.vpath,
 520                                       ofs - cnt, ctx.qry.grep,
 521                                       ctx.qry.search, ctx.qry.showmsg,
 522                                       ctx.qry.follow);
 523                         html("</li>");
 524                 }
 525                 if ((commit = get_revision(&rev)) != NULL) {
 526                         html("<li>");
 527                         cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
 528                                       ctx.qry.sha1, ctx.qry.vpath,
 529                                       ofs + cnt, ctx.qry.grep,
 530                                       ctx.qry.search, ctx.qry.showmsg,
 531                                       ctx.qry.follow);
 532                         html("</li>");
 533                 }
 534                 html("</ul>");
 535                 cgit_print_layout_end();
 536         } else if ((commit = get_revision(&rev)) != NULL) {
 537                 htmlf("<tr class='nohover'><td colspan='%d'>", columns);
 538                 cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,
 539                               ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg,
 540                               ctx.qry.follow);
 541                 html("</td></tr>\n");
 542         }
 543
 544         /* If we allocated tip then it is safe to cast away const. */
 545         if (must_free_tip)
 546                 free((char*) tip);
 547 }