urmoms.c

   1 #include <sys/stat.h>
   2
   3 #include <err.h>
   4 #include <inttypes.h>
   5 #include <libgen.h>
   6 #include <limits.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10
  11 #include "git2.h"
  12
  13 static git_repository *repo;
  14
  15 static const char *relpath = "";
  16 static const char *repodir;
  17
  18 static char name[255];
  19 static char description[255];
  20 static int hasreadme, haslicense;
  21
  22 int
  23 writeheader(FILE *fp)
  24 {
  25         fputs("<!DOCTYPE HTML>"
  26                 "<html dir=\"ltr\" lang=\"en\">\n<head>\n"
  27                 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
  28                 "<meta http-equiv=\"Content-Language\" content=\"en\" />\n", fp);
  29         fprintf(fp, "<title>%s%s%s</title>\n", name, description[0] ? " - " : "", description);
  30         fprintf(fp, "<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
  31         fprintf(fp, "<link rel=\"alternate\" type=\"application/atom+xml\" title=\"%s Atom Feed\" href=\"%satom.xml\" />\n",
  32                 name, relpath);
  33         fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
  34         fputs("</head>\n<body>\n", fp);
  35         fprintf(fp, "<h1><img src=\"%slogo.png\" alt=\"\" /> %s <span class=\"desc\">%s</span></h1>\n",
  36                 relpath, name, description);
  37         fprintf(fp, "<a href=\"%slog.html\">Log</a> | ", relpath);
  38         fprintf(fp, "<a href=\"%sfiles.html\">Files</a>", relpath);
  39         /*fprintf(fp, "| <a href=\"%sstats.html\">Stats</a>", relpath);*/
  40         if (hasreadme)
  41                 fprintf(fp, " | <a href=\"%sreadme.html\">README</a>", relpath);
  42         if (haslicense)
  43                 fprintf(fp, " | <a href=\"%slicense.html\">LICENSE</a>", relpath);
  44         fputs("\n<hr/>\n<pre>", fp);
  45
  46         return 0;
  47 }
  48
  49 int
  50 writefooter(FILE *fp)
  51 {
  52         return !fputs("</pre>\n</body>\n</html>", fp);
  53 }
  54
  55 FILE *
  56 efopen(const char *name, const char *flags)
  57 {
  58         FILE *fp;
  59
  60         if (!(fp = fopen(name, flags)))
  61                 err(1, "fopen");
  62
  63         return fp;
  64 }
  65
  66 /* Escape characters below as HTML 2.0 / XML 1.0. */
  67 void
  68 xmlencode(FILE *fp, const char *s, size_t len)
  69 {
  70         size_t i;
  71
  72         for (i = 0; *s && i < len; s++, i++) {
  73                 switch(*s) {
  74                 case '<':  fputs("&lt;",   fp); break;
  75                 case '>':  fputs("&gt;",   fp); break;
  76                 case '\'': fputs("&apos;", fp); break;
  77                 case '&':  fputs("&amp;",  fp); break;
  78                 case '"':  fputs("&quot;", fp); break;
  79                 default:   fputc(*s, fp);
  80                 }
  81         }
  82 }
  83
  84 /* Some implementations of basename(3) return a pointer to a static
  85  * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
  86  * This is a wrapper function that is compatible with both versions.
  87  * The program will error out if basename(3) failed, this can only happen
  88  * with the OpenBSD version. */
  89 char *
  90 xbasename(const char *path)
  91 {
  92         char *p, *b;
  93
  94         if (!(p = strdup(path)))
  95                 err(1, "strdup");
  96         if (!(b = basename(p)))
  97                 err(1, "basename");
  98         if (!(b = strdup(b)))
  99                 err(1, "strdup");
 100         free(p);
 101
 102         return b;
 103 }
 104
 105 void
 106 printtimez(FILE *fp, const git_time *intime)
 107 {
 108         struct tm *intm;
 109         time_t t;
 110         int offset, hours, minutes;
 111         char sign, out[32];
 112
 113         offset = intime->offset;
 114         if (offset < 0) {
 115                 sign = '-';
 116                 offset = -offset;
 117         } else {
 118                 sign = '+';
 119         }
 120
 121         hours = offset / 60;
 122         minutes = offset % 60;
 123
 124         t = (time_t) intime->time + (intime->offset * 60);
 125
 126         intm = gmtime(&t);
 127         strftime(out, sizeof(out), "%Y-%m-%dT%H:%M:%SZ", intm);
 128         fputs(out, fp);
 129 }
 130
 131 void
 132 printtime(FILE *fp, const git_time *intime)
 133 {
 134         struct tm *intm;
 135         time_t t;
 136         int offset, hours, minutes;
 137         char sign, out[32];
 138
 139         offset = intime->offset;
 140         if (offset < 0) {
 141                 sign = '-';
 142                 offset = -offset;
 143         } else {
 144                 sign = '+';
 145         }
 146
 147         hours = offset / 60;
 148         minutes = offset % 60;
 149
 150         t = (time_t) intime->time + (intime->offset * 60);
 151
 152         intm = gmtime(&t);
 153         strftime(out, sizeof(out), "%a %b %e %T %Y", intm);
 154
 155         fprintf(fp, "%s %c%02d%02d", out, sign, hours, minutes);
 156 }
 157
 158 void
 159 printcommit(FILE *fp, git_commit *commit)
 160 {
 161         const git_signature *sig;
 162         char buf[GIT_OID_HEXSZ + 1];
 163         int i, count;
 164         const char *scan, *eol;
 165
 166         /* TODO: show tag when commit has it */
 167         git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
 168         fprintf(fp, "commit <a href=\"%scommit/%s.html\">%s</a>\n",
 169                 relpath, buf, buf);
 170
 171         if (git_oid_tostr(buf, sizeof(buf), git_commit_parent_id(commit, 0)))
 172                 fprintf(fp, "parent <a href=\"%scommit/%s.html\">%s</a>\n",
 173                         relpath, buf, buf);
 174
 175         if ((count = (int)git_commit_parentcount(commit)) > 1) {
 176                 fprintf(fp, "Merge:");
 177                 for (i = 0; i < count; ++i) {
 178                         git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
 179                         fprintf(fp, " <a href=\"%scommit/%s.html\">%s</a>",
 180                                 relpath, buf, buf);
 181                 }
 182                 fputc('\n', fp);
 183         }
 184         if ((sig = git_commit_author(commit)) != NULL) {
 185                 fprintf(fp, "Author: ");
 186                 xmlencode(fp, sig->name, strlen(sig->name));
 187                 fprintf(fp, " &lt;<a href=\"mailto:");
 188                 xmlencode(fp, sig->email, strlen(sig->email));
 189                 fputs("\">", fp);
 190                 xmlencode(fp, sig->email, strlen(sig->email));
 191                 fputs("</a>&gt;\nDate:   ", fp);
 192                 printtime(fp, &sig->when);
 193                 fputc('\n', fp);
 194         }
 195         fputc('\n', fp);
 196
 197         for (scan = git_commit_message(commit); scan && *scan;) {
 198                 for (eol = scan; *eol && *eol != '\n'; ++eol)   /* find eol */
 199                         ;
 200
 201                 fprintf(fp, "    %.*s\n", (int) (eol - scan), scan);
 202                 scan = *eol ? eol + 1 : NULL;
 203         }
 204         fputc('\n', fp);
 205 }
 206
 207 void
 208 printshowfile(git_commit *commit)
 209 {
 210         const git_diff_delta *delta = NULL;
 211         const git_diff_hunk *hunk = NULL;
 212         const git_diff_line *line = NULL;
 213         git_commit *parent = NULL;
 214         git_tree *commit_tree = NULL, *parent_tree = NULL;
 215         git_patch *patch = NULL;
 216         git_diff *diff = NULL;
 217         git_diff_stats *diffstats = NULL;
 218         git_buf diffstatsbuf;
 219         size_t i, j, k, ndeltas, nhunks = 0, nhunklines = 0;
 220         char buf[GIT_OID_HEXSZ + 1], path[PATH_MAX];
 221         FILE *fp;
 222         int error;
 223
 224         git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
 225         snprintf(path, sizeof(path), "commit/%s.html", buf);
 226         fp = efopen(path, "w+b");
 227
 228         memset(&diffstatsbuf, 0, sizeof(diffstatsbuf));
 229
 230         writeheader(fp);
 231         printcommit(fp, commit);
 232
 233         if ((error = git_commit_parent(&parent, commit, 0)))
 234                 return;
 235         if ((error = git_commit_tree(&commit_tree, commit)))
 236                 goto err;
 237         if ((error = git_commit_tree(&parent_tree, parent)))
 238                 goto err;
 239         if ((error = git_diff_tree_to_tree(&diff, repo, commit_tree, parent_tree, NULL)))
 240                 goto err;
 241
 242         /* diff stat */
 243         if (!git_diff_get_stats(&diffstats, diff)) {
 244                 if (!git_diff_stats_to_buf(&diffstatsbuf, diffstats,
 245                     GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT, 80)) {
 246                         fputs("<hr/>", fp);
 247                         fprintf(fp, "Diffstat:\n");
 248                         fputs(diffstatsbuf.ptr, fp);
 249                 }
 250                 git_diff_stats_free(diffstats);
 251         }
 252         fputs("<hr/>", fp);
 253
 254         ndeltas = git_diff_num_deltas(diff);
 255         for (i = 0; i < ndeltas; i++) {
 256                 if (git_patch_from_diff(&patch, diff, i)) {
 257                         git_patch_free(patch);
 258                         break; /* TODO: handle error */
 259                 }
 260
 261                 delta = git_patch_get_delta(patch);
 262                 fprintf(fp, "diff --git a/<a href=\"%sfile/%s\">%s</a> b/<a href=\"%sfile/%s\">%s</a>\n",
 263                         relpath, delta->old_file.path, delta->old_file.path,
 264                         relpath, delta->new_file.path, delta->new_file.path);
 265
 266 #if 0
 267                 switch (delta->flags) {
 268                 case GIT_DIFF_FLAG_BINARY:
 269                         /* "Binary files /dev/null and b/favicon.png differ" or so */
 270                         continue; /* TODO: binary data */
 271                 case GIT_DIFF_FLAG_NOT_BINARY:   break;
 272                 case GIT_DIFF_FLAG_VALID_ID:     break; /* TODO: check */
 273                 case GIT_DIFF_FLAG_EXISTS:       break; /* TODO: check */
 274                 }
 275 #endif
 276
 277                 nhunks = git_patch_num_hunks(patch);
 278                 for (j = 0; j < nhunks; j++) {
 279                         if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
 280                                 break; /* TODO: handle error ? */
 281
 282                         fprintf(fp, "%s\n", hunk->header);
 283
 284                         for (k = 0; ; k++) {
 285                                 if (git_patch_get_line_in_hunk(&line, patch, j, k))
 286                                         break;
 287                                 if (line->old_lineno == -1)
 288                                         fprintf(fp, "<span class=\"i\"><a href=\"#h%zu-%zu\" id=\"h%zu-%zu\">+",
 289                                                 j, k, j, k);
 290                                 else if (line->new_lineno == -1)
 291                                         fprintf(fp, "<span class=\"d\"><a href=\"#h%zu-%zu\" id=\"h%zu-%zu\">-",
 292                                                 j, k, j, k);
 293                                 else
 294                                         fputc(' ', fp);
 295                                 xmlencode(fp, line->content, line->content_len);
 296                                 if (line->old_lineno == -1 || line->new_lineno == -1)
 297                                         fputs("</a></span>", fp);
 298                         }
 299                 }
 300                 git_patch_free(patch);
 301         }
 302         git_diff_free(diff);
 303
 304         writefooter(fp);
 305         fclose(fp);
 306         return;
 307
 308 err:
 309         git_buf_free(&diffstatsbuf);
 310         fclose(fp);
 311 }
 312
 313 int
 314 writelog(FILE *fp)
 315 {
 316         git_revwalk *w = NULL;
 317         git_oid id;
 318         git_commit *commit = NULL;
 319         const git_signature *author;
 320         git_diff_stats *stats;
 321         git_tree *commit_tree = NULL, *parent_tree = NULL;
 322         git_commit *parent = NULL;
 323         git_diff *diff = NULL;
 324         size_t i, nfiles, ndel, nadd;
 325         const char *summary;
 326         char buf[GIT_OID_HEXSZ + 1];
 327         int error;
 328
 329         mkdir("commit", 0755);
 330
 331         git_revwalk_new(&w, repo);
 332         git_revwalk_push_head(w);
 333
 334         /* TODO: also make "expanded" log ? (with message body) */
 335         i = 0;
 336         fputs("<table><thead><tr><td>Summary</td><td>Author</td><td align=\"right\">Age</td>"
 337               "<td align=\"right\">Files</td><td align=\"right\">+</td><td align=\"right\">-</td></tr></thead><tbody>", fp);
 338         while (!git_revwalk_next(&id, w)) {
 339                 if (git_commit_lookup(&commit, repo, &id))
 340                         return 1; /* TODO: error */
 341
 342                 if ((error = git_commit_parent(&parent, commit, 0)))
 343                         continue; /* TODO: handle error */
 344                 if ((error = git_commit_tree(&commit_tree, commit)))
 345                         continue; /* TODO: handle error */
 346                 if ((error = git_commit_tree(&parent_tree, parent)))
 347                         continue; /* TODO: handle error */
 348                 if ((error = git_diff_tree_to_tree(&diff, repo, commit_tree, parent_tree, NULL)))
 349                         continue; /* TODO: handle error */
 350                 if (git_diff_get_stats(&stats, diff))
 351                         continue; /* TODO: handle error */
 352
 353                 git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
 354
 355                 ndel = git_diff_stats_deletions(stats);
 356                 nadd = git_diff_stats_insertions(stats);
 357                 nfiles = git_diff_stats_files_changed(stats);
 358
 359                 /* TODO: show tag when commit has it */
 360
 361                 /* TODO: collect stats per author and make stats.html page */
 362                 author = git_commit_author(commit);
 363                 summary = git_commit_summary(commit);
 364
 365                 fputs("<tr><td>", fp);
 366                 if (summary) {
 367                         fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, buf);
 368                         xmlencode(fp, summary, strlen(summary));
 369                         fputs("</a>", fp);
 370                 }
 371                 fputs("</td><td>", fp);
 372                 if (author)
 373                         xmlencode(fp, author->name, strlen(author->name));
 374                 fputs("</td><td align=\"right\">", fp);
 375                 printtime(fp, &author->when);
 376                 fputs("</td><td align=\"right\">", fp);
 377                 fprintf(fp, "%zu", nfiles);
 378                 fputs("</td><td align=\"right\">", fp);
 379                 fprintf(fp, "+%zu", nadd);
 380                 fputs("</td><td align=\"right\">", fp);
 381                 fprintf(fp, "-%zu", ndel);
 382                 fputs("</td></tr>", fp);
 383
 384                 printshowfile(commit);
 385
 386                 git_diff_free(diff);
 387                 git_commit_free(commit);
 388
 389                 /* DEBUG */
 390                 i++;
 391                 if (i > 100)
 392                         break;
 393         }
 394         fprintf(fp, "</tbody></table>");
 395         git_revwalk_free(w);
 396
 397         return 0;
 398 }
 399
 400 void
 401 printcommitatom(FILE *fp, git_commit *commit)
 402 {
 403         const git_signature *sig;
 404         char buf[GIT_OID_HEXSZ + 1];
 405         int i, count;
 406         const char *scan, *eol, *summary;
 407
 408         fputs("<entry>\n", fp);
 409
 410         /* TODO: show tag when commit has it */
 411         git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
 412         fprintf(fp, "<id>%s</id>\n", buf);
 413
 414         sig = git_commit_author(commit);
 415
 416         if (sig) {
 417                 fputs("<updated>", fp);
 418                 printtimez(fp, &sig->when);
 419                 fputs("</updated>\n", fp);
 420         }
 421
 422         if ((summary = git_commit_summary(commit))) {
 423                 fputs("<title type=\"text\">", fp);
 424                 xmlencode(fp, summary, strlen(summary));
 425                 fputs("</title>\n", fp);
 426         }
 427
 428         fputs("<content type=\"text\">", fp);
 429         fprintf(fp, "commit %s\n", buf);
 430         if (git_oid_tostr(buf, sizeof(buf), git_commit_parent_id(commit, 0)))
 431                 fprintf(fp, "parent %s\n", buf);
 432
 433         if ((count = (int)git_commit_parentcount(commit)) > 1) {
 434                 fprintf(fp, "Merge:");
 435                 for (i = 0; i < count; ++i) {
 436                         git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
 437                         fprintf(fp, " %s", buf);
 438                 }
 439                 fputc('\n', fp);
 440         }
 441
 442         if (sig) {
 443                 fprintf(fp, "Author: ");
 444                 xmlencode(fp, sig->name, strlen(sig->name));
 445                 fprintf(fp, " &lt;");
 446                 xmlencode(fp, sig->email, strlen(sig->email));
 447                 fprintf(fp, "&gt;\nDate:   ");
 448                 printtime(fp, &sig->when);
 449         }
 450         fputc('\n', fp);
 451
 452         for (scan = git_commit_message(commit); scan && *scan;) {
 453                 for (eol = scan; *eol && *eol != '\n'; ++eol)   /* find eol */
 454                         ;
 455
 456                 fprintf(fp, "    %.*s\n", (int) (eol - scan), scan);
 457                 scan = *eol ? eol + 1 : NULL;
 458         }
 459         fputc('\n', fp);
 460         fputs("</content>\n", fp);
 461         if (sig) {
 462                 fputs("<author><name>", fp);
 463                 xmlencode(fp, sig->name, strlen(sig->name));
 464                 fputs("</name>\n<email>", fp);
 465                 xmlencode(fp, sig->email, strlen(sig->email));
 466                 fputs("</email>\n</author>\n", fp);
 467         }
 468         fputs("</entry>\n", fp);
 469 }
 470
 471 int
 472 writeatom(FILE *fp)
 473 {
 474         git_revwalk *w = NULL;
 475         git_oid id;
 476         git_commit *c = NULL;
 477         size_t i, m = 100; /* max */
 478
 479         fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n", fp);
 480         fputs("<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
 481         xmlencode(fp, name, strlen(name));
 482         fputs(", branch master</title>\n<subtitle>", fp);
 483
 484         xmlencode(fp, description, strlen(description));
 485         fputs("</subtitle>\n", fp);
 486
 487         git_revwalk_new(&w, repo);
 488         git_revwalk_push_head(w);
 489
 490         for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
 491                 if (git_commit_lookup(&c, repo, &id))
 492                         return 1; /* TODO: error */
 493                 printcommitatom(fp, c);
 494                 git_commit_free(c);
 495         }
 496         git_revwalk_free(w);
 497
 498         fputs("</feed>", fp);
 499
 500         return 0;
 501 }
 502
 503 int
 504 writefiles(FILE *fp)
 505 {
 506         git_index *index;
 507         const git_index_entry *entry;
 508         size_t count, i;
 509
 510         git_repository_index(&index, repo);
 511
 512         count = git_index_entrycount(index);
 513         fputs("<table><thead>\n<tr><td>Mode</td><td>Name</td><td align=\"right\">Size</td></tr>\n</thead><tbody>\n", fp);
 514
 515         for (i = 0; i < count; i++) {
 516                 entry = git_index_get_byindex(index, i);
 517                 fputs("<tr><td>", fp);
 518                 fprintf(fp, "%u", entry->mode); /* TODO: fancy print, like: "-rw-r--r--" */
 519                 fprintf(fp, "</td><td><a href=\"%sfile/", relpath);
 520                 xmlencode(fp, entry->path, strlen(entry->path));
 521                 fputs("\">", fp);
 522                 xmlencode(fp, entry->path, strlen(entry->path));
 523                 fputs("</a></td><td align=\"right\">", fp);
 524                 fprintf(fp, "%" PRIu64, entry->file_size);
 525                 fputs("</td></tr>\n", fp);
 526         }
 527         fputs("</tbody></table>", fp);
 528
 529         return 0;
 530 }
 531
 532 void
 533 writeblobhtml(FILE *fp, const git_blob *blob)
 534 {
 535         xmlencode(fp, git_blob_rawcontent(blob), (size_t)git_blob_rawsize(blob));
 536 }
 537
 538 int
 539 main(int argc, char *argv[])
 540 {
 541         git_object *obj = NULL;
 542         const git_error *e = NULL;
 543         FILE *fp, *fpread;
 544         char path[PATH_MAX], *p;
 545         int status;
 546
 547         if (argc != 2) {
 548                 fprintf(stderr, "%s <repodir>\n", argv[0]);
 549                 return 1;
 550         }
 551         repodir = argv[1];
 552
 553         git_libgit2_init();
 554
 555         if ((status = git_repository_open(&repo, repodir)) < 0) {
 556                 e = giterr_last();
 557                 fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
 558                 return status;
 559         }
 560
 561         /* use directory name as name */
 562         p = xbasename(repodir);
 563         snprintf(name, sizeof(name), "%s", p);
 564         free(p);
 565
 566         /* read description or .git/description */
 567         snprintf(path, sizeof(path), "%s%s%s",
 568                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 569         if (!(fpread = fopen(path, "r+b"))) {
 570                 snprintf(path, sizeof(path), "%s%s%s",
 571                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 572                 fpread = fopen(path, "r+b");
 573         }
 574         if (fpread) {
 575                 if (!fgets(description, sizeof(description), fpread))
 576                         description[0] = '\0';
 577                 fclose(fpread);
 578         }
 579
 580         /* read LICENSE */
 581         if (!git_revparse_single(&obj, repo, "HEAD:LICENSE")) {
 582                 fp = efopen("license.html", "w+b");
 583                 writeheader(fp);
 584                 writeblobhtml(fp, (git_blob *)obj);
 585                 if (ferror(fp))
 586                         err(1, "fwrite");
 587                 writefooter(fp);
 588
 589                 fclose(fp);
 590
 591                 haslicense = 1;
 592         }
 593
 594         /* read README */
 595         if (!git_revparse_single(&obj, repo, "HEAD:README")) {
 596                 fp = efopen("readme.html", "w+b");
 597                 writeheader(fp);
 598                 writeblobhtml(fp, (git_blob *)obj);
 599                 if (ferror(fp))
 600                         err(1, "fwrite");
 601                 writefooter(fp);
 602                 fclose(fp);
 603
 604                 hasreadme = 1;
 605         }
 606
 607         fp = efopen("log.html", "w+b");
 608         writeheader(fp);
 609         writelog(fp);
 610         writefooter(fp);
 611         fclose(fp);
 612
 613         fp = efopen("files.html", "w+b");
 614         writeheader(fp);
 615         writefiles(fp);
 616         writefooter(fp);
 617         fclose(fp);
 618
 619         /* Atom feed */
 620         fp = efopen("atom.xml", "w+b");
 621         writeatom(fp);
 622         fclose(fp);
 623
 624         /* cleanup */
 625         git_repository_free(repo);
 626         git_libgit2_shutdown();
 627
 628         return 0;
 629 }