ui-log.c

   1 /* ui-log.c: functions for log output
   2  *
   3  * Copyright (C) 2006 Lars Hjemli
   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 "vector.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 vector vec = VECTOR_INIT(char *);
 292         int i, columns = commit_graph ? 4 : 3;
 293         int must_free_tip = 0;
 294         struct strbuf argbuf = STRBUF_INIT;
 295
 296         /* First argv is NULL */
 297         vector_push(&vec, NULL, 0);
 298
 299         if (!tip)
 300                 tip = ctx.qry.head;
 301         tip = disambiguate_ref(tip, &must_free_tip);
 302         vector_push(&vec, &tip, 0);
 303
 304         if (grep && pattern && *pattern) {
 305                 pattern = xstrdup(pattern);
 306                 if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
 307                     !strcmp(grep, "committer")) {
 308                         strbuf_addf(&argbuf, "--%s=%s", grep, pattern);
 309                         vector_push(&vec, &argbuf.buf, 0);
 310                 }
 311                 if (!strcmp(grep, "range")) {
 312                         char *arg;
 313                         /* Split the pattern at whitespace and add each token
 314                          * as a revision expression. Do not accept other
 315                          * rev-list options. Also, replace the previously
 316                          * pushed tip (it's no longer relevant).
 317                          */
 318                         vec.count--;
 319                         while ((arg = next_token(&pattern))) {
 320                                 if (*arg == '-') {
 321                                         fprintf(stderr, "Bad range expr: %s\n",
 322                                                 arg);
 323                                         break;
 324                                 }
 325                                 vector_push(&vec, &arg, 0);
 326                         }
 327                 }
 328         }
 329         if (commit_graph) {
 330                 static const char *graph_arg = "--graph";
 331                 static const char *color_arg = "--color";
 332                 vector_push(&vec, &graph_arg, 0);
 333                 vector_push(&vec, &color_arg, 0);
 334                 graph_set_column_colors(column_colors_html,
 335                                         COLUMN_COLORS_HTML_MAX);
 336         }
 337
 338         if (commit_sort == 1) {
 339                 static const char *date_order_arg = "--date-order";
 340                 vector_push(&vec, &date_order_arg, 0);
 341         } else if (commit_sort == 2) {
 342                 static const char *topo_order_arg = "--topo-order";
 343                 vector_push(&vec, &topo_order_arg, 0);
 344         }
 345
 346         if (path) {
 347                 static const char *double_dash_arg = "--";
 348                 vector_push(&vec, &double_dash_arg, 0);
 349                 vector_push(&vec, &path, 0);
 350         }
 351
 352         /* Make sure the vector is NULL-terminated */
 353         vector_push(&vec, NULL, 0);
 354         vec.count--;
 355
 356         init_revisions(&rev, NULL);
 357         rev.abbrev = DEFAULT_ABBREV;
 358         rev.commit_format = CMIT_FMT_DEFAULT;
 359         rev.verbose_header = 1;
 360         rev.show_root_diff = 0;
 361         setup_revisions(vec.count, vec.data, &rev, NULL);
 362         load_ref_decorations(DECORATE_FULL_REFS);
 363         rev.show_decorations = 1;
 364         rev.grep_filter.regflags |= REG_ICASE;
 365         compile_grep_patterns(&rev.grep_filter);
 366         prepare_revision_walk(&rev);
 367
 368         if (pager)
 369                 html("<table class='list nowrap'>");
 370
 371         html("<tr class='nohover'>");
 372         if (commit_graph)
 373                 html("<th></th>");
 374         else
 375                 html("<th class='left'>Age</th>");
 376         html("<th class='left'>Commit message");
 377         if (pager) {
 378                 html(" (");
 379                 cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
 380                               NULL, ctx.qry.head, ctx.qry.sha1,
 381                               ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
 382                               ctx.qry.search, ctx.qry.showmsg ? 0 : 1);
 383                 html(")");
 384         }
 385         html("</th><th class='left'>Author</th>");
 386         if (commit_graph)
 387                 html("<th class='left'>Age</th>");
 388         if (ctx.repo->enable_log_filecount) {
 389                 html("<th class='left'>Files</th>");
 390                 columns++;
 391         }
 392         if (ctx.repo->enable_log_linecount) {
 393                 html("<th class='left'>Lines</th>");
 394                 columns++;
 395         }
 396         html("</tr>\n");
 397
 398         if (ofs<0)
 399                 ofs = 0;
 400
 401         for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; i++) {
 402                 free(commit->buffer);
 403                 commit->buffer = NULL;
 404                 free_commit_list(commit->parents);
 405                 commit->parents = NULL;
 406         }
 407
 408         for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
 409                 print_commit(commit, &rev);
 410                 free(commit->buffer);
 411                 commit->buffer = NULL;
 412                 free_commit_list(commit->parents);
 413                 commit->parents = NULL;
 414         }
 415         if (pager) {
 416                 html("</table><ul class='pager'>");
 417                 if (ofs > 0) {
 418                         html("<li>");
 419                         cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
 420                                       ctx.qry.sha1, ctx.qry.vpath,
 421                                       ofs - cnt, ctx.qry.grep,
 422                                       ctx.qry.search, ctx.qry.showmsg);
 423                         html("</li>");
 424                 }
 425                 if ((commit = get_revision(&rev)) != NULL) {
 426                         html("<li>");
 427                         cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
 428                                       ctx.qry.sha1, ctx.qry.vpath,
 429                                       ofs + cnt, ctx.qry.grep,
 430                                       ctx.qry.search, ctx.qry.showmsg);
 431                         html("</li>");
 432                 }
 433                 html("</ul>");
 434         } else if ((commit = get_revision(&rev)) != NULL) {
 435                 htmlf("<tr class='nohover'><td colspan='%d'>", columns);
 436                 cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,
 437                               ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg);
 438                 html("</td></tr>\n");
 439         }
 440
 441         /* If we allocated tip then it is safe to cast away const. */
 442         if (must_free_tip)
 443                 free((char*) tip);
 444         strbuf_release(&argbuf);
 445 }