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\"><head>"
  27                 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />"
  28                 "<meta http-equiv=\"Content-Language\" content=\"en\" />", fp);
  29         fprintf(fp, "<title>%s%s%s</title>", name, description[0] ? " - " : "", description);
  30         fprintf(fp, "<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />", relpath);
  31         fprintf(fp, "<link rel=\"alternate\" type=\"application/atom+xml\" title=\"%s Atom Feed\" href=\"%satom.xml\" />",
  32                 name, relpath);
  33         fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"style.css\" />"
  34                 "</head><body><center>");
  35         fprintf(fp, "<h1><img src=\"%slogo.png\" alt=\"\" /> %s</h1>", relpath, name);
  36         fprintf(fp, "<span class=\"desc\">%s</span><br/>", 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("</center><hr/><pre>", fp);
  45
  46         return 0;
  47 }
  48
  49 int
  50 writefooter(FILE *fp)
  51 {
  52         return !fputs("</pre></body></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\n", 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;");
 188                 xmlencode(fp, sig->email, strlen(sig->email));
 189                 fprintf(fp, "&gt;\nDate:   ");
 190                 printtime(fp, &sig->when);
 191         }
 192         fputc('\n', fp);
 193
 194         for (scan = git_commit_message(commit); scan && *scan;) {
 195                 for (eol = scan; *eol && *eol != '\n'; ++eol)   /* find eol */
 196                         ;
 197
 198                 fprintf(fp, "    %.*s\n", (int) (eol - scan), scan);
 199                 scan = *eol ? eol + 1 : NULL;
 200         }
 201         fputc('\n', fp);
 202 }
 203
 204 void
 205 printshowfile(git_commit *commit)
 206 {
 207         const git_diff_delta *delta = NULL;
 208         const git_diff_hunk *hunk = NULL;
 209         const git_diff_line *line = NULL;
 210         git_commit *parent = NULL;
 211         git_tree *commit_tree = NULL, *parent_tree = NULL;
 212         git_patch *patch = NULL;
 213         git_diff *diff = NULL;
 214         git_diff_stats *diffstats = NULL;
 215         git_buf diffstatsbuf;
 216         size_t i, j, k, ndeltas, nhunks = 0, nhunklines = 0;
 217         char buf[GIT_OID_HEXSZ + 1], path[PATH_MAX];
 218         FILE *fp;
 219         int error;
 220
 221         git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
 222         snprintf(path, sizeof(path), "commit/%s.html", buf);
 223         fp = efopen(path, "w+b");
 224
 225         memset(&diffstatsbuf, 0, sizeof(diffstatsbuf));
 226
 227         writeheader(fp);
 228         printcommit(fp, commit);
 229
 230         if ((error = git_commit_parent(&parent, commit, 0)))
 231                 return;
 232         if ((error = git_commit_tree(&commit_tree, commit)))
 233                 goto err;
 234         if ((error = git_commit_tree(&parent_tree, parent)))
 235                 goto err;
 236         if ((error = git_diff_tree_to_tree(&diff, repo, commit_tree, parent_tree, NULL)))
 237                 goto err;
 238
 239         /* diff stat */
 240         if (!git_diff_get_stats(&diffstats, diff)) {
 241                 if (!git_diff_stats_to_buf(&diffstatsbuf, diffstats,
 242                     GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT | GIT_DIFF_STATS_NUMBER |
 243                     GIT_DIFF_STATS_INCLUDE_SUMMARY, 80)) {
 244                         fputs("<hr/>", fp);
 245                         fprintf(fp, "Diffstat:\n");
 246                         fputs(diffstatsbuf.ptr, fp);
 247                 }
 248                 git_diff_stats_free(diffstats);
 249         }
 250         fputs("<hr/>", fp);
 251
 252         ndeltas = git_diff_num_deltas(diff);
 253         for (i = 0; i < ndeltas; i++) {
 254                 if (git_patch_from_diff(&patch, diff, i)) {
 255                         git_patch_free(patch);
 256                         break; /* TODO: handle error */
 257                 }
 258
 259                 delta = git_patch_get_delta(patch);
 260                 fprintf(fp, "diff --git a/<a href=\"%s%s\">%s</a> b/<a href=\"%s%s\">%s</a>\n",
 261                         relpath, delta->old_file.path, delta->old_file.path,
 262                         relpath, delta->new_file.path, delta->new_file.path);
 263
 264 #if 0
 265                 switch (delta->flags) {
 266                 case GIT_DIFF_FLAG_BINARY:
 267                         /* "Binary files /dev/null and b/favicon.png differ" or so */
 268                         continue; /* TODO: binary data */
 269                 case GIT_DIFF_FLAG_NOT_BINARY:   break;
 270                 case GIT_DIFF_FLAG_VALID_ID:     break; /* TODO: check */
 271                 case GIT_DIFF_FLAG_EXISTS:       break; /* TODO: check */
 272                 }
 273 #endif
 274
 275                 nhunks = git_patch_num_hunks(patch);
 276                 for (j = 0; j < nhunks; j++) {
 277                         if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
 278                                 break; /* TODO: handle error ? */
 279
 280                         fprintf(fp, "%s\n", hunk->header);
 281
 282                         for (k = 0; ; k++) {
 283                                 if (git_patch_get_line_in_hunk(&line, patch, j, k))
 284                                         break;
 285                                 if (line->old_lineno == -1)
 286                                         fputc('+', fp);
 287                                 else if (line->new_lineno == -1)
 288                                         fputc('-', fp);
 289                                 else
 290                                         fputc(' ', fp);
 291                                 xmlencode(fp, line->content, line->content_len);
 292                         }
 293                 }
 294                 git_patch_free(patch);
 295         }
 296         git_diff_free(diff);
 297
 298         writefooter(fp);
 299         fclose(fp);
 300         return;
 301
 302 err:
 303         git_buf_free(&diffstatsbuf);
 304         fclose(fp);
 305 }
 306
 307 int
 308 writelog(FILE *fp)
 309 {
 310         git_revwalk *w = NULL;
 311         git_oid id;
 312         git_commit *commit = NULL;
 313         const git_signature *author;
 314         git_diff_stats *stats;
 315         git_tree *commit_tree = NULL, *parent_tree = NULL;
 316         git_commit *parent = NULL;
 317         git_diff *diff = NULL;
 318         size_t i, nfiles, ndel, nadd;
 319         const char *summary;
 320         char buf[GIT_OID_HEXSZ + 1];
 321         int error;
 322
 323         mkdir("commit", 0755);
 324
 325         git_revwalk_new(&w, repo);
 326         git_revwalk_push_head(w);
 327
 328         /* TODO: also make "expanded" log ? (with message body) */
 329         i = 0;
 330         fputs("<table><thead><tr><td>Summary</td><td>Author</td><td align=\"right\">Age</td>"
 331               "<td align=\"right\">Files</td><td align=\"right\">+</td><td align=\"right\">-</td></tr></thead><tbody>", fp);
 332         while (!git_revwalk_next(&id, w)) {
 333                 if (git_commit_lookup(&commit, repo, &id))
 334                         return 1; /* TODO: error */
 335
 336                 if ((error = git_commit_parent(&parent, commit, 0)))
 337                         continue; /* TODO: handle error */
 338                 if ((error = git_commit_tree(&commit_tree, commit)))
 339                         continue; /* TODO: handle error */
 340                 if ((error = git_commit_tree(&parent_tree, parent)))
 341                         continue; /* TODO: handle error */
 342                 if ((error = git_diff_tree_to_tree(&diff, repo, commit_tree, parent_tree, NULL)))
 343                         continue; /* TODO: handle error */
 344                 if (git_diff_get_stats(&stats, diff))
 345                         continue; /* TODO: handle error */
 346
 347                 git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
 348
 349                 ndel = git_diff_stats_deletions(stats);
 350                 nadd = git_diff_stats_insertions(stats);
 351                 nfiles = git_diff_stats_files_changed(stats);
 352
 353                 /* TODO: show tag when commit has it */
 354
 355                 /* TODO: collect stats per author and make stats.html page */
 356                 author = git_commit_author(commit);
 357                 summary = git_commit_summary(commit);
 358
 359                 fputs("<tr><td>", fp);
 360                 if (summary) {
 361                         fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, buf);
 362                         xmlencode(fp, summary, strlen(summary));
 363                         fputs("</a>", fp);
 364                 }
 365                 fputs("</td><td>", fp);
 366                 if (author)
 367                         xmlencode(fp, author->name, strlen(author->name));
 368                 fputs("</td><td align=\"right\">", fp);
 369                 printtime(fp, &author->when);
 370                 fputs("</td><td align=\"right\">", fp);
 371                 fprintf(fp, "%zu", nfiles);
 372                 fputs("</td><td align=\"right\">", fp);
 373                 fprintf(fp, "+%zu", nadd);
 374                 fputs("</td><td align=\"right\">", fp);
 375                 fprintf(fp, "-%zu", ndel);
 376                 fputs("</td></tr>", fp);
 377
 378                 printshowfile(commit);
 379
 380                 git_diff_free(diff);
 381                 git_commit_free(commit);
 382
 383                 /* DEBUG */
 384                 i++;
 385                 if (i > 100)
 386                         break;
 387         }
 388         fprintf(fp, "</tbody></table>");
 389         git_revwalk_free(w);
 390
 391         return 0;
 392 }
 393
 394 void
 395 printcommitatom(FILE *fp, git_commit *commit)
 396 {
 397         const git_signature *sig;
 398         char buf[GIT_OID_HEXSZ + 1];
 399         int i, count;
 400         const char *scan, *eol, *summary;
 401
 402         fputs("<entry>", fp);
 403
 404         /* TODO: show tag when commit has it */
 405         git_oid_tostr(buf, sizeof(buf), git_commit_id(commit));
 406         fprintf(fp, "<id>%s</id>", buf);
 407
 408         sig = git_commit_author(commit);
 409
 410         if (sig) {
 411                 fputs("<updated>", fp);
 412                 printtimez(fp, &sig->when);
 413                 fputs("</updated>", fp);
 414         }
 415
 416         if ((summary = git_commit_summary(commit))) {
 417                 fputs("<title>", fp);
 418                 xmlencode(fp, summary, strlen(summary));
 419                 fputs("</title>", fp);
 420         }
 421
 422         fputs("<content type=\"text\">", fp);
 423         fprintf(fp, "commit %s\n", buf);
 424         if (git_oid_tostr(buf, sizeof(buf), git_commit_parent_id(commit, 0)))
 425                 fprintf(fp, "parent %s\n", buf);
 426
 427         if ((count = (int)git_commit_parentcount(commit)) > 1) {
 428                 fprintf(fp, "Merge:");
 429                 for (i = 0; i < count; ++i) {
 430                         git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
 431                         fprintf(fp, " %s", buf);
 432                 }
 433                 fputc('\n', fp);
 434         }
 435
 436         if (sig) {
 437                 fprintf(fp, "Author: ");
 438                 xmlencode(fp, sig->name, strlen(sig->name));
 439                 fprintf(fp, " &lt;");
 440                 xmlencode(fp, sig->email, strlen(sig->email));
 441                 fprintf(fp, "&gt;\nDate:   ");
 442                 printtime(fp, &sig->when);
 443         }
 444         fputc('\n', fp);
 445
 446         for (scan = git_commit_message(commit); scan && *scan;) {
 447                 for (eol = scan; *eol && *eol != '\n'; ++eol)   /* find eol */
 448                         ;
 449
 450                 fprintf(fp, "    %.*s\n", (int) (eol - scan), scan);
 451                 scan = *eol ? eol + 1 : NULL;
 452         }
 453         fputc('\n', fp);
 454         fputs("</content>", fp);
 455         if (sig) {
 456                 fputs("<author><name>", fp);
 457                 xmlencode(fp, sig->name, strlen(sig->name));
 458                 fputs("</name><email>", fp);
 459                 xmlencode(fp, sig->email, strlen(sig->email));
 460                 fputs("</email></author>", fp);
 461         }
 462         fputs("</entry>", fp);
 463 }
 464
 465 int
 466 writeatom(FILE *fp)
 467 {
 468         git_revwalk *w = NULL;
 469         git_oid id;
 470         git_commit *c = NULL;
 471         size_t i, m = 100; /* max */
 472
 473         fputs("<feed xmlns=\"http://www.w3.org/2005/Atom\"><title>", fp);
 474         xmlencode(fp, name, strlen(name));
 475         fputs(", branch master</title><subtitle>", fp);
 476
 477         xmlencode(fp, description, strlen(description));
 478         fputs("</subtitle>", fp);
 479
 480         git_revwalk_new(&w, repo);
 481         git_revwalk_push_head(w);
 482
 483         for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
 484                 if (git_commit_lookup(&c, repo, &id))
 485                         return 1; /* TODO: error */
 486                 printcommitatom(fp, c);
 487                 git_commit_free(c);
 488         }
 489         git_revwalk_free(w);
 490
 491         fputs("</feed>", fp);
 492
 493         return 0;
 494 }
 495
 496 int
 497 writefiles(FILE *fp)
 498 {
 499         git_index *index;
 500         const git_index_entry *entry;
 501         size_t count, i;
 502
 503         git_repository_index(&index, repo);
 504
 505         count = git_index_entrycount(index);
 506         fputs("<table><thead><tr><td>Mode</td><td>Name</td><td>Size</td></tr></thead><tbody>", fp);
 507
 508         for (i = 0; i < count; i++) {
 509                 entry = git_index_get_byindex(index, i);
 510                 fputs("<tr><td>", fp);
 511                 fprintf(fp, "%u", entry->mode); /* TODO: fancy print, like: "-rw-r--r--" */
 512                 fprintf(fp, "</td><td><a href=\"%sfile/", relpath);
 513                 xmlencode(fp, entry->path, strlen(entry->path));
 514                 fputs("\">", fp);
 515                 xmlencode(fp, entry->path, strlen(entry->path));
 516                 fputs("</a></td><td align=\"right\">", fp);
 517                 fprintf(fp, "%" PRIu64, entry->file_size);
 518                 fputs("</td></tr>", fp);
 519         }
 520         fputs("</tbody></table>", fp);
 521
 522         return 0;
 523 }
 524
 525 void
 526 writeblobhtml(FILE *fp, const git_blob *blob)
 527 {
 528         xmlencode(fp, git_blob_rawcontent(blob), (size_t)git_blob_rawsize(blob));
 529 }
 530
 531 int
 532 main(int argc, char *argv[])
 533 {
 534         git_object *obj = NULL;
 535         const git_error *e = NULL;
 536         FILE *fp, *fpread;
 537         char path[PATH_MAX], *p;
 538         int status;
 539
 540         if (argc != 2) {
 541                 fprintf(stderr, "%s <repodir>\n", argv[0]);
 542                 return 1;
 543         }
 544         repodir = argv[1];
 545
 546         git_libgit2_init();
 547
 548         if ((status = git_repository_open(&repo, repodir)) < 0) {
 549                 e = giterr_last();
 550                 fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
 551                 return status;
 552         }
 553
 554         /* use directory name as name */
 555         p = xbasename(repodir);
 556         snprintf(name, sizeof(name), "%s", p);
 557         free(p);
 558
 559         /* read description or .git/description */
 560         snprintf(path, sizeof(path), "%s%s%s",
 561                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 562         if (!(fpread = fopen(path, "r+b"))) {
 563                 snprintf(path, sizeof(path), "%s%s%s",
 564                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 565                 fpread = fopen(path, "r+b");
 566         }
 567         if (fpread) {
 568                 if (!fgets(description, sizeof(description), fpread))
 569                         description[0] = '\0';
 570                 fclose(fpread);
 571         }
 572
 573         /* read LICENSE */
 574         if (!git_revparse_single(&obj, repo, "HEAD:LICENSE")) {
 575                 fp = efopen("license.html", "w+b");
 576                 writeheader(fp);
 577                 writeblobhtml(fp, (git_blob *)obj);
 578                 if (ferror(fp))
 579                         err(1, "fwrite");
 580                 writefooter(fp);
 581
 582                 fclose(fp);
 583
 584                 haslicense = 1;
 585         }
 586
 587         /* read README */
 588         if (!git_revparse_single(&obj, repo, "HEAD:README")) {
 589                 fp = efopen("readme.html", "w+b");
 590                 writeheader(fp);
 591                 writeblobhtml(fp, (git_blob *)obj);
 592                 if (ferror(fp))
 593                         err(1, "fwrite");
 594                 writefooter(fp);
 595                 fclose(fp);
 596
 597                 hasreadme = 1;
 598         }
 599
 600         fp = efopen("log.html", "w+b");
 601         writeheader(fp);
 602         writelog(fp);
 603         writefooter(fp);
 604         fclose(fp);
 605
 606         fp = efopen("atom.xml", "w+b");
 607         writeatom(fp);
 608         fclose(fp);
 609
 610         fp = efopen("files.html", "w+b");
 611         writeheader(fp);
 612         writefiles(fp);
 613         writefooter(fp);
 614         fclose(fp);
 615
 616         /* cleanup */
 617         git_repository_free(repo);
 618         git_libgit2_shutdown();
 619
 620         return 0;
 621 }