stagit.c

   1 #include <sys/stat.h>
   2
   3 #include <err.h>
   4 #include <errno.h>
   5 #include <inttypes.h>
   6 #include <libgen.h>
   7 #include <limits.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12
  13 #include <git2.h>
  14
  15 #include "compat.h"
  16 #include "config.h"
  17
  18 struct commitinfo {
  19         const git_oid *id;
  20
  21         char oid[GIT_OID_HEXSZ + 1];
  22         char parentoid[GIT_OID_HEXSZ + 1];
  23
  24         const git_signature *author;
  25         const char          *summary;
  26         const char          *msg;
  27
  28         git_diff_stats *stats;
  29         git_diff       *diff;
  30         git_commit     *commit;
  31         git_commit     *parent;
  32         git_tree       *commit_tree;
  33         git_tree       *parent_tree;
  34
  35         size_t addcount;
  36         size_t delcount;
  37         size_t filecount;
  38 };
  39
  40 static git_repository *repo;
  41
  42 static const char *relpath = "";
  43 static const char *repodir;
  44
  45 static char name[255];
  46 static char description[255];
  47 static char cloneurl[1024];
  48 static int hasreadme, haslicense;
  49
  50 void
  51 commitinfo_free(struct commitinfo *ci)
  52 {
  53         if (!ci)
  54                 return;
  55
  56         git_diff_stats_free(ci->stats);
  57         git_diff_free(ci->diff);
  58         git_tree_free(ci->commit_tree);
  59         git_tree_free(ci->parent_tree);
  60         git_commit_free(ci->commit);
  61 }
  62
  63 struct commitinfo *
  64 commitinfo_getbyoid(const git_oid *id)
  65 {
  66         struct commitinfo *ci;
  67         git_diff_options opts;
  68         int error;
  69
  70         if (!(ci = calloc(1, sizeof(struct commitinfo))))
  71                 err(1, "calloc");
  72
  73         ci->id = id;
  74         if (git_commit_lookup(&(ci->commit), repo, id))
  75                 goto err;
  76
  77         git_oid_tostr(ci->oid, sizeof(ci->oid), git_commit_id(ci->commit));
  78         git_oid_tostr(ci->parentoid, sizeof(ci->parentoid), git_commit_parent_id(ci->commit, 0));
  79
  80         ci->author = git_commit_author(ci->commit);
  81         ci->summary = git_commit_summary(ci->commit);
  82         ci->msg = git_commit_message(ci->commit);
  83
  84         if ((error = git_commit_tree(&(ci->commit_tree), ci->commit)))
  85                 goto err;
  86         if (!(error = git_commit_parent(&(ci->parent), ci->commit, 0))) {
  87                 if ((error = git_commit_tree(&(ci->parent_tree), ci->parent)))
  88                         goto err;
  89         } else {
  90                 ci->parent = NULL;
  91                 ci->parent_tree = NULL;
  92         }
  93
  94         git_diff_init_options(&opts, GIT_DIFF_OPTIONS_VERSION);
  95         opts.flags |= GIT_DIFF_DISABLE_PATHSPEC_MATCH;
  96         if ((error = git_diff_tree_to_tree(&(ci->diff), repo, ci->parent_tree, ci->commit_tree, &opts)))
  97                 goto err;
  98         if (git_diff_get_stats(&(ci->stats), ci->diff))
  99                 goto err;
 100
 101         ci->addcount = git_diff_stats_insertions(ci->stats);
 102         ci->delcount = git_diff_stats_deletions(ci->stats);
 103         ci->filecount = git_diff_stats_files_changed(ci->stats);
 104
 105         return ci;
 106
 107 err:
 108         commitinfo_free(ci);
 109         free(ci);
 110
 111         return NULL;
 112 }
 113
 114 FILE *
 115 efopen(const char *name, const char *flags)
 116 {
 117         FILE *fp;
 118
 119         if (!(fp = fopen(name, flags)))
 120                 err(1, "fopen");
 121
 122         return fp;
 123 }
 124
 125 /* Escape characters below as HTML 2.0 / XML 1.0. */
 126 void
 127 xmlencode(FILE *fp, const char *s, size_t len)
 128 {
 129         size_t i;
 130
 131         for (i = 0; *s && i < len; s++, i++) {
 132                 switch(*s) {
 133                 case '<':  fputs("&lt;",   fp); break;
 134                 case '>':  fputs("&gt;",   fp); break;
 135                 case '\'': fputs("&apos;", fp); break;
 136                 case '&':  fputs("&amp;",  fp); break;
 137                 case '"':  fputs("&quot;", fp); break;
 138                 default:   fputc(*s, fp);
 139                 }
 140         }
 141 }
 142
 143 /* Some implementations of dirname(3) return a pointer to a static
 144  * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
 145  * This is a wrapper function that is compatible with both versions.
 146  * The program will error out if dirname(3) failed, this can only happen
 147  * with the OpenBSD version. */
 148 char *
 149 xdirname(const char *path)
 150 {
 151         char *p, *b;
 152
 153         if (!(p = strdup(path)))
 154                 err(1, "strdup");
 155         if (!(b = dirname(p)))
 156                 err(1, "basename");
 157         if (!(b = strdup(b)))
 158                 err(1, "strdup");
 159         free(p);
 160
 161         return b;
 162 }
 163
 164 /* Some implementations of basename(3) return a pointer to a static
 165  * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
 166  * This is a wrapper function that is compatible with both versions.
 167  * The program will error out if basename(3) failed, this can only happen
 168  * with the OpenBSD version. */
 169 char *
 170 xbasename(const char *path)
 171 {
 172         char *p, *b;
 173
 174         if (!(p = strdup(path)))
 175                 err(1, "strdup");
 176         if (!(b = basename(p)))
 177                 err(1, "basename");
 178         if (!(b = strdup(b)))
 179                 err(1, "strdup");
 180         free(p);
 181
 182         return b;
 183 }
 184
 185 int
 186 mkdirp(const char *path)
 187 {
 188         char tmp[PATH_MAX], *p;
 189
 190         strlcpy(tmp, path, sizeof(tmp));
 191         for (p = tmp + (tmp[0] == '/'); *p; p++) {
 192                 if (*p != '/')
 193                         continue;
 194                 *p = '\0';
 195                 if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
 196                         return -1;
 197                 *p = '/';
 198         }
 199         if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
 200                 return -1;
 201         return 0;
 202 }
 203
 204 void
 205 printtimeformat(FILE *fp, const git_time *intime, const char *fmt)
 206 {
 207         struct tm *intm;
 208         time_t t;
 209         char out[32];
 210
 211         t = (time_t) intime->time + (intime->offset * 60);
 212         intm = gmtime(&t);
 213         strftime(out, sizeof(out), fmt, intm);
 214         fputs(out, fp);
 215 }
 216
 217 void
 218 printtimez(FILE *fp, const git_time *intime)
 219 {
 220         printtimeformat(fp, intime, "%Y-%m-%dT%H:%M:%SZ");
 221 }
 222
 223 void
 224 printtime(FILE *fp, const git_time *intime)
 225 {
 226         printtimeformat(fp, intime, "%a %b %e %T %Y");
 227 }
 228
 229 void
 230 printtimeshort(FILE *fp, const git_time *intime)
 231 {
 232         printtimeformat(fp, intime, "%Y-%m-%d %H:%M");
 233 }
 234
 235 int
 236 writeheader(FILE *fp)
 237 {
 238         fputs("<!DOCTYPE HTML>"
 239                 "<html dir=\"ltr\" lang=\"en\">\n<head>\n"
 240                 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
 241                 "<meta http-equiv=\"Content-Language\" content=\"en\" />\n<title>", fp);
 242         xmlencode(fp, name, strlen(name));
 243         if (description[0])
 244                 fputs(" - ", fp);
 245         xmlencode(fp, description, strlen(description));
 246         fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
 247         fprintf(fp, "<link rel=\"alternate\" type=\"application/atom+xml\" title=\"%s Atom Feed\" href=\"%satom.xml\" />\n",
 248                 name, relpath);
 249         fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
 250         fputs("</head>\n<body>\n<table><tr><td>", fp);
 251         fprintf(fp, "<a href=\"../%s\"><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /></a>",
 252                 relpath, relpath);
 253         fputs("</td><td><h1>", fp);
 254         xmlencode(fp, name, strlen(name));
 255         fputs("</h1><span class=\"desc\">", fp);
 256         xmlencode(fp, description, strlen(description));
 257         fputs("</span></td></tr>", fp);
 258         if (cloneurl[0]) {
 259                 fputs("<tr class=\"url\"><td></td><td>git clone <a href=\"", fp);
 260                 xmlencode(fp, cloneurl, strlen(cloneurl));
 261                 fputs("\">", fp);
 262                 xmlencode(fp, cloneurl, strlen(cloneurl));
 263                 fputs("</a></td></tr>", fp);
 264         }
 265         fputs("<tr><td></td><td>\n", fp);
 266         fprintf(fp, "<a href=\"%slog/HEAD.html\">Log</a> | ", relpath);
 267         fprintf(fp, "<a href=\"%sfiles.html\">Files</a> | ", relpath);
 268         fprintf(fp, "<a href=\"%srefs.html\">Refs/branches</a>", relpath);
 269         if (hasreadme)
 270                 fprintf(fp, " | <a href=\"%sfile/README.html\">README</a>", relpath);
 271         if (haslicense)
 272                 fprintf(fp, " | <a href=\"%sfile/LICENSE.html\">LICENSE</a>", relpath);
 273         fputs("</td></tr></table>\n<hr/><div id=\"content\">\n", fp);
 274
 275         return 0;
 276 }
 277
 278 int
 279 writefooter(FILE *fp)
 280 {
 281         return !fputs("</div></body>\n</html>", fp);
 282 }
 283
 284 void
 285 writeblobhtml(FILE *fp, const git_blob *blob)
 286 {
 287         off_t i;
 288         size_t n = 1;
 289         char *nfmt = "<a href=\"#l%d\" id=\"l%d\">%d</a>\n";
 290         const char *s = git_blob_rawcontent(blob);
 291         git_off_t len = git_blob_rawsize(blob);
 292
 293         fputs("<table id=\"blob\"><tr><td class=\"num\"><pre>\n", fp);
 294
 295         if (len) {
 296                 fprintf(fp, nfmt, n, n, n);
 297                 for (i = 0; i < len - 1; i++) {
 298                         if (s[i] == '\n') {
 299                                 n++;
 300                                 fprintf(fp, nfmt, n, n, n);
 301                         }
 302                 }
 303         }
 304
 305         fputs("</pre></td><td><pre>\n", fp);
 306         xmlencode(fp, s, (size_t)len);
 307         fputs("</pre></td></tr></table>\n", fp);
 308 }
 309
 310 void
 311 printcommit(FILE *fp, struct commitinfo *ci)
 312 {
 313         fprintf(fp, "<b>commit</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 314                 relpath, ci->oid, ci->oid);
 315
 316         if (ci->parentoid[0])
 317                 fprintf(fp, "<b>parent</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 318                         relpath, ci->parentoid, ci->parentoid);
 319
 320 #if 0
 321         if ((count = (int)git_commit_parentcount(commit)) > 1) {
 322                 fputs("<b>Merge:</b>", fp);
 323                 for (i = 0; i < count; i++) {
 324                         git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
 325                         fprintf(fp, " <a href=\"%scommit/%s.html\">%s</a>",
 326                                 relpath, buf, buf);
 327                 }
 328                 fputc('\n', fp);
 329         }
 330 #endif
 331         if (ci->author) {
 332                 fputs("<b>Author:</b> ", fp);
 333                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 334                 fputs(" &lt;<a href=\"mailto:", fp);
 335                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 336                 fputs("\">", fp);
 337                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 338                 fputs("</a>&gt;\n<b>Date:</b>   ", fp);
 339                 printtime(fp, &(ci->author->when));
 340                 fputc('\n', fp);
 341         }
 342         fputc('\n', fp);
 343
 344         if (ci->msg)
 345                 xmlencode(fp, ci->msg, strlen(ci->msg));
 346
 347         fputc('\n', fp);
 348 }
 349
 350 void
 351 printshowfile(struct commitinfo *ci)
 352 {
 353         const git_diff_delta *delta;
 354         const git_diff_hunk *hunk;
 355         const git_diff_line *line;
 356         git_patch *patch;
 357         git_buf statsbuf;
 358         size_t ndeltas, nhunks, nhunklines;
 359         FILE *fp;
 360         size_t i, j, k;
 361         char path[PATH_MAX];
 362
 363         snprintf(path, sizeof(path), "commit/%s.html", ci->oid);
 364         /* check if file exists if so skip it */
 365         if (!access(path, F_OK))
 366                 return;
 367
 368         fp = efopen(path, "w");
 369         writeheader(fp);
 370         fputs("<pre>\n", fp);
 371         printcommit(fp, ci);
 372
 373         memset(&statsbuf, 0, sizeof(statsbuf));
 374
 375         /* diff stat */
 376         if (ci->stats) {
 377                 if (!git_diff_stats_to_buf(&statsbuf, ci->stats,
 378                     GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT, 80)) {
 379                         if (statsbuf.ptr && statsbuf.ptr[0]) {
 380                                 fputs("<b>Diffstat:</b>\n", fp);
 381                                 fputs(statsbuf.ptr, fp);
 382                         }
 383                 }
 384         }
 385
 386         fputs("<hr/>", fp);
 387
 388         ndeltas = git_diff_num_deltas(ci->diff);
 389         for (i = 0; i < ndeltas; i++) {
 390                 if (git_patch_from_diff(&patch, ci->diff, i)) {
 391                         git_patch_free(patch);
 392                         break;
 393                 }
 394
 395                 delta = git_patch_get_delta(patch);
 396                 fprintf(fp, "<b>diff --git a/<a href=\"%sfile/%s.html\">%s</a> b/<a href=\"%sfile/%s.html\">%s</a></b>\n",
 397                         relpath, delta->old_file.path, delta->old_file.path,
 398                         relpath, delta->new_file.path, delta->new_file.path);
 399
 400                 /* check binary data */
 401                 if (delta->flags & GIT_DIFF_FLAG_BINARY) {
 402                         fputs("Binary files differ\n", fp);
 403                         git_patch_free(patch);
 404                         continue;
 405                 }
 406
 407                 nhunks = git_patch_num_hunks(patch);
 408                 for (j = 0; j < nhunks; j++) {
 409                         if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
 410                                 break;
 411
 412                         fputs("<span class=\"h\">", fp);
 413                         xmlencode(fp, hunk->header, strcspn(hunk->header, "\n"));
 414                         fputs("</span>", fp);
 415
 416                         for (k = 0; ; k++) {
 417                                 if (git_patch_get_line_in_hunk(&line, patch, j, k))
 418                                         break;
 419                                 if (line->old_lineno == -1)
 420                                         fprintf(fp, "<a href=\"#h%zu-%zu\" id=\"h%zu-%zu\" class=\"i\">+",
 421                                                 j, k, j, k);
 422                                 else if (line->new_lineno == -1)
 423                                         fprintf(fp, "<a href=\"#h%zu-%zu\" id=\"h%zu-%zu\" class=\"d\">-",
 424                                                 j, k, j, k);
 425                                 else
 426                                         fputc(' ', fp);
 427                                 xmlencode(fp, line->content, line->content_len);
 428                                 if (line->old_lineno == -1 || line->new_lineno == -1)
 429                                         fputs("</a>", fp);
 430                         }
 431                 }
 432                 git_patch_free(patch);
 433         }
 434         git_buf_free(&statsbuf);
 435
 436         fputs("</pre>\n", fp);
 437         writefooter(fp);
 438         fclose(fp);
 439         return;
 440 }
 441
 442 int
 443 writelog(FILE *fp, const char *branch)
 444 {
 445         struct commitinfo *ci;
 446         const git_oid *oid;
 447         git_revwalk *w = NULL;
 448         git_object *obj = NULL;
 449         git_oid id;
 450         size_t len;
 451
 452         mkdir("commit", 0755);
 453
 454         if (git_revparse_single(&obj, repo, branch))
 455                 return -1;
 456         oid = git_object_id(obj);
 457
 458         git_revwalk_new(&w, repo);
 459         git_revwalk_push(w, oid);
 460         git_revwalk_sorting(w, GIT_SORT_TIME);
 461         git_revwalk_simplify_first_parent(w);
 462
 463         fputs("<table id=\"log\"><thead>\n<tr><td>Age</td><td>Commit message</td>"
 464                   "<td>Author</td><td>Files</td><td class=\"num\">+</td>"
 465                   "<td class=\"num\">-</td></tr>\n</thead><tbody>\n", fp);
 466         while (!git_revwalk_next(&id, w)) {
 467                 relpath = "";
 468
 469                 if (!(ci = commitinfo_getbyoid(&id)))
 470                         break;
 471
 472                 fputs("<tr><td>", fp);
 473                 if (ci->author)
 474                         printtimeshort(fp, &(ci->author->when));
 475                 fputs("</td><td>", fp);
 476                 if (ci->summary) {
 477                         fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 478                         if ((len = strlen(ci->summary)) > summarylen) {
 479                                 xmlencode(fp, ci->summary, summarylen - 1);
 480                                 fputs("…", fp);
 481                         } else {
 482                                 xmlencode(fp, ci->summary, len);
 483                         }
 484                         fputs("</a>", fp);
 485                 }
 486                 fputs("</td><td>", fp);
 487                 if (ci->author)
 488                         xmlencode(fp, ci->author->name, strlen(ci->author->name));
 489                 fputs("</td><td class=\"num\">", fp);
 490                 fprintf(fp, "%zu", ci->filecount);
 491                 fputs("</td><td class=\"num\">", fp);
 492                 fprintf(fp, "+%zu", ci->addcount);
 493                 fputs("</td><td class=\"num\">", fp);
 494                 fprintf(fp, "-%zu", ci->delcount);
 495                 fputs("</td></tr>\n", fp);
 496
 497                 relpath = "../";
 498                 printshowfile(ci);
 499
 500                 commitinfo_free(ci);
 501         }
 502         fputs("</tbody></table>", fp);
 503
 504         git_revwalk_free(w);
 505         git_object_free(obj);
 506
 507         relpath = "";
 508
 509         return 0;
 510 }
 511
 512 void
 513 printcommitatom(FILE *fp, struct commitinfo *ci)
 514 {
 515         fputs("<entry>\n", fp);
 516
 517         fprintf(fp, "<id>%s</id>\n", ci->oid);
 518         if (ci->author) {
 519                 fputs("<updated>", fp);
 520                 printtimez(fp, &(ci->author->when));
 521                 fputs("</updated>\n", fp);
 522         }
 523         if (ci->summary) {
 524                 fputs("<title type=\"text\">", fp);
 525                 xmlencode(fp, ci->summary, strlen(ci->summary));
 526                 fputs("</title>\n", fp);
 527         }
 528
 529         fputs("<content type=\"text\">", fp);
 530         fprintf(fp, "commit %s\n", ci->oid);
 531         if (ci->parentoid[0])
 532                 fprintf(fp, "parent %s\n", ci->parentoid);
 533
 534 #if 0
 535         if ((count = (int)git_commit_parentcount(commit)) > 1) {
 536                 fputs("Merge:", fp);
 537                 for (i = 0; i < count; i++) {
 538                         git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
 539                         fprintf(fp, " %s", buf);
 540                 }
 541                 fputc('\n', fp);
 542         }
 543 #endif
 544
 545         if (ci->author) {
 546                 fputs("Author: ", fp);
 547                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 548                 fputs(" &lt;", fp);
 549                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 550                 fputs("&gt;\nDate:   ", fp);
 551                 printtime(fp, &(ci->author->when));
 552         }
 553         fputc('\n', fp);
 554
 555         if (ci->msg)
 556                 xmlencode(fp, ci->msg, strlen(ci->msg));
 557         fputs("\n</content>\n", fp);
 558         if (ci->author) {
 559                 fputs("<author><name>", fp);
 560                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 561                 fputs("</name>\n<email>", fp);
 562                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 563                 fputs("</email>\n</author>\n", fp);
 564         }
 565         fputs("</entry>\n", fp);
 566 }
 567
 568 int
 569 writeatom(FILE *fp)
 570 {
 571         struct commitinfo *ci;
 572         git_revwalk *w = NULL;
 573         git_oid id;
 574         size_t i, m = 100; /* max */
 575
 576         fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 577               "<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
 578         xmlencode(fp, name, strlen(name));
 579         fputs(", branch master</title>\n<subtitle>", fp);
 580
 581         xmlencode(fp, description, strlen(description));
 582         fputs("</subtitle>\n", fp);
 583
 584         git_revwalk_new(&w, repo);
 585         git_revwalk_push_head(w);
 586         git_revwalk_sorting(w, GIT_SORT_TIME);
 587         git_revwalk_simplify_first_parent(w);
 588
 589         for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
 590                 if (!(ci = commitinfo_getbyoid(&id)))
 591                         break;
 592                 printcommitatom(fp, ci);
 593                 commitinfo_free(ci);
 594         }
 595         git_revwalk_free(w);
 596
 597         fputs("</feed>", fp);
 598
 599         return 0;
 600 }
 601
 602 int
 603 writeblob(git_object *obj, const char *filename, git_off_t filesize)
 604 {
 605         char fpath[PATH_MAX];
 606         char tmp[PATH_MAX] = "";
 607         char *d, *p;
 608         FILE *fp;
 609
 610         snprintf(fpath, sizeof(fpath), "file/%s.html", filename);
 611         d = xdirname(fpath);
 612         if (mkdirp(d)) {
 613                 free(d);
 614                 return 1;
 615         }
 616         free(d);
 617
 618         p = fpath;
 619         while (*p) {
 620                 if (*p == '/')
 621                         strlcat(tmp, "../", sizeof(tmp));
 622                 p++;
 623         }
 624         relpath = tmp;
 625
 626         fp = efopen(fpath, "w");
 627         writeheader(fp);
 628         fputs("<p> ", fp);
 629         xmlencode(fp, filename, strlen(filename));
 630         fprintf(fp, " (%" PRIu32 "b)", filesize);
 631         fputs("</p><hr/>", fp);
 632
 633         if (git_blob_is_binary((git_blob *)obj)) {
 634                 fputs("<p>Binary file</p>\n", fp);
 635         } else {
 636                 writeblobhtml(fp, (git_blob *)obj);
 637                 if (ferror(fp))
 638                         err(1, "fwrite");
 639         }
 640         writefooter(fp);
 641         fclose(fp);
 642
 643         relpath = "";
 644
 645         return 0;
 646 }
 647
 648 const char *
 649 filemode(git_filemode_t m)
 650 {
 651         static char mode[11];
 652
 653         memset(mode, '-', sizeof(mode) - 1);
 654         mode[10] = '\0';
 655
 656         if (S_ISREG(m))
 657                 mode[0] = '-';
 658         else if (S_ISBLK(m))
 659                 mode[0] = 'b';
 660         else if (S_ISCHR(m))
 661                 mode[0] = 'c';
 662         else if (S_ISDIR(m))
 663                 mode[0] = 'd';
 664         else if (S_ISFIFO(m))
 665                 mode[0] = 'p';
 666         else if (S_ISLNK(m))
 667                 mode[0] = 'l';
 668         else if (S_ISSOCK(m))
 669                 mode[0] = 's';
 670         else
 671                 mode[0] = '?';
 672
 673         if (m & S_IRUSR) mode[1] = 'r';
 674         if (m & S_IWUSR) mode[2] = 'w';
 675         if (m & S_IXUSR) mode[3] = 'x';
 676         if (m & S_IRGRP) mode[4] = 'r';
 677         if (m & S_IWGRP) mode[5] = 'w';
 678         if (m & S_IXGRP) mode[6] = 'x';
 679         if (m & S_IROTH) mode[7] = 'r';
 680         if (m & S_IWOTH) mode[8] = 'w';
 681         if (m & S_IXOTH) mode[9] = 'x';
 682
 683         if (m & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
 684         if (m & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
 685         if (m & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T';
 686
 687         return mode;
 688 }
 689
 690 int
 691 writefilestree(FILE *fp, git_tree *tree, const char *branch, const char *path)
 692 {
 693         const git_tree_entry *entry = NULL;
 694         const char *filename;
 695         char filepath[PATH_MAX];
 696         git_object *obj = NULL;
 697         git_off_t filesize;
 698         size_t count, i;
 699         int ret;
 700
 701         count = git_tree_entrycount(tree);
 702         for (i = 0; i < count; i++) {
 703                 if (!(entry = git_tree_entry_byindex(tree, i)) ||
 704                     git_tree_entry_to_object(&obj, repo, entry))
 705                         return -1;
 706                 filename = git_tree_entry_name(entry);
 707                 switch (git_object_type(obj)) {
 708                 case GIT_OBJ_BLOB:
 709                         break;
 710                 case GIT_OBJ_TREE:
 711                         /* NOTE: recurses */
 712                         ret = writefilestree(fp, (git_tree *)obj, branch,
 713                                              filename);
 714                         git_object_free(obj);
 715                         if (ret)
 716                                 return ret;
 717                         continue;
 718                 default:
 719                         git_object_free(obj);
 720                         continue;
 721                 }
 722                 if (path[0]) {
 723                         snprintf(filepath, sizeof(filepath), "%s/%s",
 724                                  path, filename);
 725                         filename = filepath;
 726                 }
 727                 filesize = git_blob_rawsize((git_blob *)obj);
 728
 729                 fputs("<tr><td>", fp);
 730                 fprintf(fp, "%s", filemode(git_tree_entry_filemode(entry)));
 731                 fprintf(fp, "</td><td><a href=\"%sfile/", relpath);
 732                 xmlencode(fp, filename, strlen(filename));
 733                 fputs(".html\">", fp);
 734                 xmlencode(fp, filename, strlen(filename));
 735                 fputs("</a></td><td class=\"num\">", fp);
 736                 fprintf(fp, "%" PRIu32, filesize);
 737                 fputs("</td></tr>\n", fp);
 738
 739                 writeblob(obj, filename, filesize);
 740         }
 741
 742         return 0;
 743 }
 744
 745 int
 746 writefiles(FILE *fp, const char *branch)
 747 {
 748         const git_oid *id;
 749         git_tree *tree = NULL;
 750         git_object *obj = NULL;
 751         git_commit *commit = NULL;
 752         int ret = -1;
 753
 754         fputs("<table id=\"files\"><thead>\n<tr>"
 755               "<td>Mode</td><td>Name</td><td class=\"num\">Size</td>"
 756               "</tr>\n</thead><tbody>\n", fp);
 757
 758         if (git_revparse_single(&obj, repo, branch))
 759                 goto err;
 760         id = git_object_id(obj);
 761         if (git_commit_lookup(&commit, repo, id) ||
 762             git_commit_tree(&tree, commit))
 763                 goto err;
 764         ret = writefilestree(fp, tree, branch, "");
 765
 766 err:
 767         fputs("</tbody></table>", fp);
 768
 769         git_object_free(obj);
 770         git_commit_free(commit);
 771         git_tree_free(tree);
 772
 773         return ret;
 774 }
 775
 776 int
 777 writebranches(FILE *fp)
 778 {
 779         struct commitinfo *ci;
 780         git_branch_iterator *it = NULL;
 781         git_branch_t branch;
 782         git_reference *ref = NULL, *dref = NULL;
 783         const git_oid *id = NULL;
 784         const char *branchname = NULL;
 785         size_t len;
 786         int ret = -1;
 787
 788         /* log for local branches */
 789         if (git_branch_iterator_new(&it, repo, GIT_BRANCH_LOCAL))
 790                 return -1;
 791
 792         fputs("<h2>Branches</h2><table id=\"branches\"><thead>\n<tr><td>Branch</td><td>Age</td>"
 793                   "<td>Commit message</td>"
 794                   "<td>Author</td><td>Files</td><td class=\"num\">+</td>"
 795                   "<td class=\"num\">-</td></tr>\n</thead><tbody>\n", fp);
 796
 797         while (!git_branch_next(&ref, &branch, it)) {
 798                 if (git_branch_name(&branchname, ref))
 799                         continue;
 800
 801                 id = NULL;
 802                 switch (git_reference_type(ref)) {
 803                 case GIT_REF_SYMBOLIC:
 804                         if (git_reference_resolve(&dref, ref))
 805                                 goto err;
 806                         id = git_reference_target(dref);
 807                         break;
 808                 case GIT_REF_OID:
 809                         id = git_reference_target(ref);
 810                         break;
 811                 default:
 812                         continue;
 813                 }
 814                 if (!id)
 815                         goto err;
 816                 if (!(ci = commitinfo_getbyoid(id)))
 817                         break;
 818
 819                 relpath = "";
 820
 821                 fputs("<tr><td>", fp);
 822                 xmlencode(fp, branchname, strlen(branchname));
 823                 fputs("</td><td>", fp);
 824                 if (ci->author)
 825                         printtimeshort(fp, &(ci->author->when));
 826                 fputs("</td><td>", fp);
 827                 if (ci->summary) {
 828                         fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 829                         if ((len = strlen(ci->summary)) > summarylen) {
 830                                 xmlencode(fp, ci->summary, summarylen - 1);
 831                                 fputs("…", fp);
 832                         } else {
 833                                 xmlencode(fp, ci->summary, len);
 834                         }
 835                         fputs("</a>", fp);
 836                 }
 837                 fputs("</td><td>", fp);
 838                 if (ci->author)
 839                         xmlencode(fp, ci->author->name, strlen(ci->author->name));
 840                 fputs("</td><td class=\"num\">", fp);
 841                 fprintf(fp, "%zu", ci->filecount);
 842                 fputs("</td><td class=\"num\">", fp);
 843                 fprintf(fp, "+%zu", ci->addcount);
 844                 fputs("</td><td class=\"num\">", fp);
 845                 fprintf(fp, "-%zu", ci->delcount);
 846                 fputs("</td></tr>\n", fp);
 847
 848                 relpath = "../";
 849
 850                 commitinfo_free(ci);
 851                 git_reference_free(ref);
 852                 git_reference_free(dref);
 853                 ref = NULL;
 854                 dref = NULL;
 855         }
 856         ret = 0;
 857
 858 err:
 859         fputs("</tbody></table>", fp);
 860         git_reference_free(ref);
 861         git_reference_free(dref);
 862         git_branch_iterator_free(it);
 863
 864         return ret;
 865 }
 866
 867 int
 868 tagcompare(void *s1, void *s2)
 869 {
 870         return strcmp(*(char **)s1, *(char **)s2);
 871 }
 872
 873 int
 874 writetags(FILE *fp)
 875 {
 876         struct commitinfo *ci;
 877         git_strarray tagnames;
 878         git_object *obj = NULL;
 879         const git_oid *id = NULL;
 880         size_t i, len;
 881
 882         /* summary page with branches and tags */
 883         memset(&tagnames, 0, sizeof(tagnames));
 884         if (git_tag_list(&tagnames, repo))
 885                 return -1;
 886         if (!tagnames.count) {
 887                 git_strarray_free(&tagnames);
 888                 return 0;
 889         }
 890
 891         /* sort names */
 892         qsort(tagnames.strings, tagnames.count, sizeof(char *),
 893               (int (*)(const void *, const void *))&tagcompare);
 894
 895         fputs("<h2>Tags</h2><table id=\"branches\"><thead>\n<tr><td>Tag</td>"
 896               "<td>Age</td><td>Commit message</td>"
 897               "<td>Author</td><td>Files</td><td class=\"num\">+</td>"
 898               "<td class=\"num\">-</td></tr>\n</thead><tbody>\n", fp);
 899
 900         for (i = 0; i < tagnames.count; i++) {
 901                 if (git_revparse_single(&obj, repo, tagnames.strings[i]))
 902                         continue;
 903                 id = git_object_id(obj);
 904                 if (!(ci = commitinfo_getbyoid(id)))
 905                         break;
 906
 907                 relpath = "";
 908
 909                 fputs("<tr><td>", fp);
 910                 xmlencode(fp, tagnames.strings[i], strlen(tagnames.strings[i]));
 911                 fputs("</td><td>", fp);
 912                 if (ci->author)
 913                         printtimeshort(fp, &(ci->author->when));
 914                 fputs("</td><td>", fp);
 915                 if (ci->summary) {
 916                         fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 917                         if ((len = strlen(ci->summary)) > summarylen) {
 918                                 xmlencode(fp, ci->summary, summarylen - 1);
 919                                 fputs("…", fp);
 920                         } else {
 921                                 xmlencode(fp, ci->summary, len);
 922                         }
 923                         fputs("</a>", fp);
 924                 }
 925                 fputs("</td><td>", fp);
 926                 if (ci->author)
 927                         xmlencode(fp, ci->author->name, strlen(ci->author->name));
 928                 fputs("</td><td class=\"num\">", fp);
 929                 fprintf(fp, "%zu", ci->filecount);
 930                 fputs("</td><td class=\"num\">", fp);
 931                 fprintf(fp, "+%zu", ci->addcount);
 932                 fputs("</td><td class=\"num\">", fp);
 933                 fprintf(fp, "-%zu", ci->delcount);
 934                 fputs("</td></tr>\n", fp);
 935
 936                 relpath = "../";
 937
 938                 commitinfo_free(ci);
 939                 git_object_free(obj);
 940         }
 941         fputs("</tbody></table>", fp);
 942         git_strarray_free(&tagnames);
 943
 944         return 0;
 945 }
 946
 947 int
 948 writerefs(FILE *fp)
 949 {
 950         int ret;
 951
 952         if ((ret = writebranches(fp)))
 953                 return ret;
 954         fputs("<br/>", fp);
 955         return writetags(fp);
 956 }
 957
 958 int
 959 main(int argc, char *argv[])
 960 {
 961         git_object *obj = NULL;
 962         const git_error *e = NULL;
 963         FILE *fp, *fpread;
 964         char path[PATH_MAX], *p;
 965         int status;
 966
 967         if (argc != 2) {
 968                 fprintf(stderr, "%s <repodir>\n", argv[0]);
 969                 return 1;
 970         }
 971         repodir = argv[1];
 972
 973         git_libgit2_init();
 974
 975         if ((status = git_repository_open_ext(&repo, repodir,
 976                 GIT_REPOSITORY_OPEN_NO_SEARCH, NULL)) < 0) {
 977                 e = giterr_last();
 978                 fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
 979                 return status;
 980         }
 981
 982         /* use directory name as name */
 983         p = xbasename(repodir);
 984         snprintf(name, sizeof(name), "%s", p);
 985         free(p);
 986
 987         /* read description or .git/description */
 988         snprintf(path, sizeof(path), "%s%s%s",
 989                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 990         if (!(fpread = fopen(path, "r"))) {
 991                 snprintf(path, sizeof(path), "%s%s%s",
 992                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 993                 fpread = fopen(path, "r");
 994         }
 995         if (fpread) {
 996                 if (!fgets(description, sizeof(description), fpread))
 997                         description[0] = '\0';
 998                 fclose(fpread);
 999         }
1000
1001         /* read url or .git/url */
1002         snprintf(path, sizeof(path), "%s%s%s",
1003                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "url");
1004         if (!(fpread = fopen(path, "r"))) {
1005                 snprintf(path, sizeof(path), "%s%s%s",
1006                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/url");
1007                 fpread = fopen(path, "r");
1008         }
1009         if (fpread) {
1010                 if (!fgets(cloneurl, sizeof(cloneurl), fpread))
1011                         cloneurl[0] = '\0';
1012                 fclose(fpread);
1013         }
1014
1015         /* check LICENSE */
1016         haslicense = !git_revparse_single(&obj, repo, "HEAD:LICENSE");
1017         git_object_free(obj);
1018         /* check README */
1019         hasreadme = !git_revparse_single(&obj, repo, "HEAD:README");
1020         git_object_free(obj);
1021
1022         /* log for HEAD */
1023         mkdir("log", 0755);
1024         fp = efopen("log/HEAD.html", "w");
1025         relpath = "../";
1026         writeheader(fp);
1027         relpath = "";
1028         writelog(fp, "HEAD");
1029         writefooter(fp);
1030         fclose(fp);
1031
1032         /* files for HEAD */
1033         fp = efopen("files.html", "w");
1034         writeheader(fp);
1035         writefiles(fp, "HEAD");
1036         writefooter(fp);
1037         fclose(fp);
1038
1039         /* summary page with branches and tags */
1040         fp = efopen("refs.html", "w");
1041         writeheader(fp);
1042         writerefs(fp);
1043         writefooter(fp);
1044         fclose(fp);
1045
1046         /* Atom feed */
1047         fp = efopen("atom.xml", "w");
1048         writeatom(fp);
1049         fclose(fp);
1050
1051         /* cleanup */
1052         git_repository_free(repo);
1053         git_libgit2_shutdown();
1054
1055         return 0;
1056 }