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 int files, add_lines, rem_lines;
  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         struct name_decoration *deco;
  60         static char buf[1024];
  61
  62         buf[sizeof(buf) - 1] = 0;
  63         deco = lookup_decoration(&name_decoration, &commit->object);
  64         html("<span class='decoration'>");
  65         while (deco) {
  66                 if (!prefixcmp(deco->name, "refs/heads/")) {
  67                         strncpy(buf, deco->name + 11, sizeof(buf) - 1);
  68                         cgit_log_link(buf, NULL, "branch-deco", buf, NULL,
  69                                       ctx.qry.vpath, 0, NULL, NULL,
  70                                       ctx.qry.showmsg);
  71                 }
  72                 else if (!prefixcmp(deco->name, "tag: refs/tags/")) {
  73                         strncpy(buf, deco->name + 15, sizeof(buf) - 1);
  74                         cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);
  75                 }
  76                 else if (!prefixcmp(deco->name, "refs/tags/")) {
  77                         strncpy(buf, deco->name + 10, sizeof(buf) - 1);
  78                         cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);
  79                 }
  80                 else if (!prefixcmp(deco->name, "refs/remotes/")) {
  81                         if (!ctx.repo->enable_remote_branches)
  82                                 goto next;
  83                         strncpy(buf, deco->name + 13, sizeof(buf) - 1);
  84                         cgit_log_link(buf, NULL, "remote-deco", NULL,
  85                                       sha1_to_hex(commit->object.sha1),
  86                                       ctx.qry.vpath, 0, NULL, NULL,
  87                                       ctx.qry.showmsg);
  88                 }
  89                 else {
  90                         strncpy(buf, deco->name, sizeof(buf) - 1);
  91                         cgit_commit_link(buf, NULL, "deco", ctx.qry.head,
  92                                          sha1_to_hex(commit->object.sha1),
  93                                          ctx.qry.vpath, 0);
  94                 }
  95 next:
  96                 deco = deco->next;
  97         }
  98         html("</span>");
  99 }
 100
 101 static void print_commit(struct commit *commit, struct rev_info *revs)
 102 {
 103         struct commitinfo *info;
 104         int columns = revs->graph ? 4 : 3;
 105         struct strbuf graphbuf = STRBUF_INIT;
 106         struct strbuf msgbuf = STRBUF_INIT;
 107
 108         if (ctx.repo->enable_log_filecount)
 109                 columns++;
 110         if (ctx.repo->enable_log_linecount)
 111                 columns++;
 112
 113         if (revs->graph) {
 114                 /* Advance graph until current commit */
 115                 while (!graph_next_line(revs->graph, &graphbuf)) {
 116                         /* Print graph segment in otherwise empty table row */
 117                         html("<tr class='nohover'><td class='commitgraph'>");
 118                         html(graphbuf.buf);
 119                         htmlf("</td><td colspan='%d' /></tr>\n", columns);
 120                         strbuf_setlen(&graphbuf, 0);
 121                 }
 122                 /* Current commit's graph segment is now ready in graphbuf */
 123         }
 124
 125         info = cgit_parse_commit(commit);
 126         htmlf("<tr%s>", ctx.qry.showmsg ? " class='logheader'" : "");
 127
 128         if (revs->graph) {
 129                 /* Print graph segment for current commit */
 130                 html("<td class='commitgraph'>");
 131                 html(graphbuf.buf);
 132                 html("</td>");
 133                 strbuf_setlen(&graphbuf, 0);
 134         }
 135         else {
 136                 html("<td>");
 137                 cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
 138                 html("</td>");
 139         }
 140
 141         htmlf("<td%s>", ctx.qry.showmsg ? " class='logsubject'" : "");
 142         if (ctx.qry.showmsg) {
 143                 /* line-wrap long commit subjects instead of truncating them */
 144                 size_t subject_len = strlen(info->subject);
 145
 146                 if (subject_len > ctx.cfg.max_msg_len &&
 147                     ctx.cfg.max_msg_len >= 15) {
 148                         /* symbol for signaling line-wrap (in PAGE_ENCODING) */
 149                         const char wrap_symbol[] = { ' ', 0xE2, 0x86, 0xB5, 0 };
 150                         int i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
 151
 152                         /* Rewind i to preceding space character */
 153                         while (i > 0 && !isspace(info->subject[i]))
 154                                 --i;
 155                         if (!i) /* Oops, zero spaces. Reset i */
 156                                 i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
 157
 158                         /* add remainder starting at i to msgbuf */
 159                         strbuf_add(&msgbuf, info->subject + i, subject_len - i);
 160                         strbuf_trim(&msgbuf);
 161                         strbuf_add(&msgbuf, "\n\n", 2);
 162
 163                         /* Place wrap_symbol at position i in info->subject */
 164                         strcpy(info->subject + i, wrap_symbol);
 165                 }
 166         }
 167         cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
 168                          sha1_to_hex(commit->object.sha1), ctx.qry.vpath, 0);
 169         show_commit_decorations(commit);
 170         html("</td><td>");
 171         html_txt(info->author);
 172
 173         if (revs->graph) {
 174                 html("</td><td>");
 175                 cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
 176         }
 177
 178         if (ctx.repo->enable_log_filecount || ctx.repo->enable_log_linecount) {
 179                 files = 0;
 180                 add_lines = 0;
 181                 rem_lines = 0;
 182                 cgit_diff_commit(commit, inspect_files, ctx.qry.vpath);
 183         }
 184
 185         if (ctx.repo->enable_log_filecount)
 186                 htmlf("</td><td>%d", files);
 187         if (ctx.repo->enable_log_linecount)
 188                 htmlf("</td><td>-%d/+%d", rem_lines, add_lines);
 189
 190         html("</td></tr>\n");
 191
 192         if (revs->graph || ctx.qry.showmsg) { /* Print a second table row */
 193                 html("<tr class='nohover'>");
 194
 195                 if (ctx.qry.showmsg) {
 196                         /* Concatenate commit message + notes in msgbuf */
 197                         if (info->msg && *(info->msg)) {
 198                                 strbuf_addstr(&msgbuf, info->msg);
 199                                 strbuf_addch(&msgbuf, '\n');
 200                         }
 201                         format_display_notes(commit->object.sha1,
 202                                              &msgbuf, PAGE_ENCODING, 0);
 203                         strbuf_addch(&msgbuf, '\n');
 204                         strbuf_ltrim(&msgbuf);
 205                 }
 206
 207                 if (revs->graph) {
 208                         int lines = 0;
 209
 210                         /* Calculate graph padding */
 211                         if (ctx.qry.showmsg) {
 212                                 /* Count #lines in commit message + notes */
 213                                 const char *p = msgbuf.buf;
 214                                 lines = 1;
 215                                 while ((p = strchr(p, '\n'))) {
 216                                         p++;
 217                                         lines++;
 218                                 }
 219                         }
 220
 221                         /* Print graph padding */
 222                         html("<td class='commitgraph'>");
 223                         while (lines > 0 || !graph_is_commit_finished(revs->graph)) {
 224                                 if (graphbuf.len)
 225                                         html("\n");
 226                                 strbuf_setlen(&graphbuf, 0);
 227                                 graph_next_line(revs->graph, &graphbuf);
 228                                 html(graphbuf.buf);
 229                                 lines--;
 230                         }
 231                         html("</td>\n");
 232                 }
 233                 else
 234                         html("<td/>"); /* Empty 'Age' column */
 235
 236                 /* Print msgbuf into remainder of table row */
 237                 htmlf("<td colspan='%d'%s>\n", columns - (revs->graph ? 1 : 0),
 238                         ctx.qry.showmsg ? " class='logmsg'" : "");
 239                 html_txt(msgbuf.buf);
 240                 html("</td></tr>\n");
 241         }
 242
 243         strbuf_release(&msgbuf);
 244         strbuf_release(&graphbuf);
 245         cgit_free_commitinfo(info);
 246 }
 247
 248 static const char *disambiguate_ref(const char *ref, int *must_free_result)
 249 {
 250         unsigned char sha1[20];
 251         struct strbuf longref = STRBUF_INIT;
 252
 253         strbuf_addf(&longref, "refs/heads/%s", ref);
 254         if (get_sha1(longref.buf, sha1) == 0) {
 255                 *must_free_result = 1;
 256                 return strbuf_detach(&longref, NULL);
 257         }
 258
 259         *must_free_result = 0;
 260         strbuf_release(&longref);
 261         return ref;
 262 }
 263
 264 static char *next_token(char **src)
 265 {
 266         char *result;
 267
 268         if (!src || !*src)
 269                 return NULL;
 270         while (isspace(**src))
 271                 (*src)++;
 272         if (!**src)
 273                 return NULL;
 274         result = *src;
 275         while (**src) {
 276                 if (isspace(**src)) {
 277                         **src = '\0';
 278                         (*src)++;
 279                         break;
 280                 }
 281                 (*src)++;
 282         }
 283         return result;
 284 }
 285
 286 void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,
 287                     char *path, int pager, int commit_graph, int commit_sort)
 288 {
 289         struct rev_info rev;
 290         struct commit *commit;
 291         struct argv_array rev_argv = ARGV_ARRAY_INIT;
 292         int i, columns = commit_graph ? 4 : 3;
 293         int must_free_tip = 0;
 294
 295         /* rev_argv.argv[0] will be ignored by setup_revisions */
 296         argv_array_push(&rev_argv, "log_rev_setup");
 297
 298         if (!tip)
 299                 tip = ctx.qry.head;
 300         tip = disambiguate_ref(tip, &must_free_tip);
 301         argv_array_push(&rev_argv, tip);
 302
 303         if (grep && pattern && *pattern) {
 304                 pattern = xstrdup(pattern);
 305                 if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
 306                     !strcmp(grep, "committer")) {
 307                         argv_array_pushf(&rev_argv, "--%s=%s", grep, pattern);
 308                 } else if (!strcmp(grep, "range")) {
 309                         char *arg;
 310                         /* Split the pattern at whitespace and add each token
 311                          * as a revision expression. Do not accept other
 312                          * rev-list options. Also, replace the previously
 313                          * pushed tip (it's no longer relevant).
 314                          */
 315                         argv_array_pop(&rev_argv);
 316                         while ((arg = next_token(&pattern))) {
 317                                 if (*arg == '-') {
 318                                         fprintf(stderr, "Bad range expr: %s\n",
 319                                                 arg);
 320                                         break;
 321                                 }
 322                                 argv_array_push(&rev_argv, arg);
 323                         }
 324                 }
 325         }
 326         if (commit_graph) {
 327                 argv_array_push(&rev_argv, "--graph");
 328                 argv_array_push(&rev_argv, "--color");
 329                 graph_set_column_colors(column_colors_html,
 330                                         COLUMN_COLORS_HTML_MAX);
 331         }
 332
 333         if (commit_sort == 1)
 334                 argv_array_push(&rev_argv, "--date-order");
 335         else if (commit_sort == 2)
 336                 argv_array_push(&rev_argv, "--topo-order");
 337
 338         if (path) {
 339                 argv_array_push(&rev_argv, "--");
 340                 argv_array_push(&rev_argv, path);
 341         }
 342
 343         init_revisions(&rev, NULL);
 344         rev.abbrev = DEFAULT_ABBREV;
 345         rev.commit_format = CMIT_FMT_DEFAULT;
 346         rev.verbose_header = 1;
 347         rev.show_root_diff = 0;
 348         setup_revisions(rev_argv.argc, rev_argv.argv, &rev, NULL);
 349         load_ref_decorations(DECORATE_FULL_REFS);
 350         rev.show_decorations = 1;
 351         rev.grep_filter.regflags |= REG_ICASE;
 352         compile_grep_patterns(&rev.grep_filter);
 353         prepare_revision_walk(&rev);
 354
 355         if (pager)
 356                 html("<table class='list nowrap'>");
 357
 358         html("<tr class='nohover'>");
 359         if (commit_graph)
 360                 html("<th></th>");
 361         else
 362                 html("<th class='left'>Age</th>");
 363         html("<th class='left'>Commit message");
 364         if (pager) {
 365                 html(" (");
 366                 cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
 367                               NULL, ctx.qry.head, ctx.qry.sha1,
 368                               ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
 369                               ctx.qry.search, ctx.qry.showmsg ? 0 : 1);
 370                 html(")");
 371         }
 372         html("</th><th class='left'>Author</th>");
 373         if (commit_graph)
 374                 html("<th class='left'>Age</th>");
 375         if (ctx.repo->enable_log_filecount) {
 376                 html("<th class='left'>Files</th>");
 377                 columns++;
 378         }
 379         if (ctx.repo->enable_log_linecount) {
 380                 html("<th class='left'>Lines</th>");
 381                 columns++;
 382         }
 383         html("</tr>\n");
 384
 385         if (ofs<0)
 386                 ofs = 0;
 387
 388         for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; i++) {
 389                 free(commit->buffer);
 390                 commit->buffer = NULL;
 391                 free_commit_list(commit->parents);
 392                 commit->parents = NULL;
 393         }
 394
 395         for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
 396                 print_commit(commit, &rev);
 397                 free(commit->buffer);
 398                 commit->buffer = NULL;
 399                 free_commit_list(commit->parents);
 400                 commit->parents = NULL;
 401         }
 402         if (pager) {
 403                 html("</table><ul class='pager'>");
 404                 if (ofs > 0) {
 405                         html("<li>");
 406                         cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
 407                                       ctx.qry.sha1, ctx.qry.vpath,
 408                                       ofs - cnt, ctx.qry.grep,
 409                                       ctx.qry.search, ctx.qry.showmsg);
 410                         html("</li>");
 411                 }
 412                 if ((commit = get_revision(&rev)) != NULL) {
 413                         html("<li>");
 414                         cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
 415                                       ctx.qry.sha1, ctx.qry.vpath,
 416                                       ofs + cnt, ctx.qry.grep,
 417                                       ctx.qry.search, ctx.qry.showmsg);
 418                         html("</li>");
 419                 }
 420                 html("</ul>");
 421         } else if ((commit = get_revision(&rev)) != NULL) {
 422                 htmlf("<tr class='nohover'><td colspan='%d'>", columns);
 423                 cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,
 424                               ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg);
 425                 html("</td></tr>\n");
 426         }
 427
 428         /* If we allocated tip then it is safe to cast away const. */
 429         if (must_free_tip)
 430                 free((char*) tip);
 431 }