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.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                         fprintf(fp, "<a href=\"#h%zu\" id=\"h%zu\" class=\"h\">", j, j);
 413                         xmlencode(fp, hunk->header, hunk->header_len);
 414                         fputs("</a>", 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
 467         while (!git_revwalk_next(&id, w)) {
 468                 relpath = "";
 469
 470                 if (!(ci = commitinfo_getbyoid(&id)))
 471                         break;
 472
 473                 fputs("<tr><td>", fp);
 474                 if (ci->author)
 475                         printtimeshort(fp, &(ci->author->when));
 476                 fputs("</td><td>", fp);
 477                 if (ci->summary) {
 478                         fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 479                         if ((len = strlen(ci->summary)) > summarylen) {
 480                                 xmlencode(fp, ci->summary, summarylen - 1);
 481                                 fputs("…", fp);
 482                         } else {
 483                                 xmlencode(fp, ci->summary, len);
 484                         }
 485                         fputs("</a>", fp);
 486                 }
 487                 fputs("</td><td>", fp);
 488                 if (ci->author)
 489                         xmlencode(fp, ci->author->name, strlen(ci->author->name));
 490                 fputs("</td><td class=\"num\">", fp);
 491                 fprintf(fp, "%zu", ci->filecount);
 492                 fputs("</td><td class=\"num\">", fp);
 493                 fprintf(fp, "+%zu", ci->addcount);
 494                 fputs("</td><td class=\"num\">", fp);
 495                 fprintf(fp, "-%zu", ci->delcount);
 496                 fputs("</td></tr>\n", fp);
 497
 498                 relpath = "../";
 499                 printshowfile(ci);
 500
 501                 commitinfo_free(ci);
 502         }
 503         fputs("</tbody></table>", fp);
 504
 505         git_revwalk_free(w);
 506         git_object_free(obj);
 507
 508         relpath = "";
 509
 510         return 0;
 511 }
 512
 513 void
 514 printcommitatom(FILE *fp, struct commitinfo *ci)
 515 {
 516         fputs("<entry>\n", fp);
 517
 518         fprintf(fp, "<id>%s</id>\n", ci->oid);
 519         if (ci->author) {
 520                 fputs("<updated>", fp);
 521                 printtimez(fp, &(ci->author->when));
 522                 fputs("</updated>\n", fp);
 523         }
 524         if (ci->summary) {
 525                 fputs("<title type=\"text\">", fp);
 526                 xmlencode(fp, ci->summary, strlen(ci->summary));
 527                 fputs("</title>\n", fp);
 528         }
 529
 530         fputs("<content type=\"text\">", fp);
 531         fprintf(fp, "commit %s\n", ci->oid);
 532         if (ci->parentoid[0])
 533                 fprintf(fp, "parent %s\n", ci->parentoid);
 534
 535 #if 0
 536         if ((count = (int)git_commit_parentcount(commit)) > 1) {
 537                 fputs("Merge:", fp);
 538                 for (i = 0; i < count; i++) {
 539                         git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
 540                         fprintf(fp, " %s", buf);
 541                 }
 542                 fputc('\n', fp);
 543         }
 544 #endif
 545
 546         if (ci->author) {
 547                 fputs("Author: ", fp);
 548                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 549                 fputs(" &lt;", fp);
 550                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 551                 fputs("&gt;\nDate:   ", fp);
 552                 printtime(fp, &(ci->author->when));
 553         }
 554         fputc('\n', fp);
 555
 556         if (ci->msg)
 557                 xmlencode(fp, ci->msg, strlen(ci->msg));
 558         fputs("\n</content>\n", fp);
 559         if (ci->author) {
 560                 fputs("<author><name>", fp);
 561                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 562                 fputs("</name>\n<email>", fp);
 563                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 564                 fputs("</email>\n</author>\n", fp);
 565         }
 566         fputs("</entry>\n", fp);
 567 }
 568
 569 int
 570 writeatom(FILE *fp)
 571 {
 572         struct commitinfo *ci;
 573         git_revwalk *w = NULL;
 574         git_oid id;
 575         size_t i, m = 100; /* max */
 576
 577         fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 578               "<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
 579         xmlencode(fp, name, strlen(name));
 580         fputs(", branch master</title>\n<subtitle>", fp);
 581
 582         xmlencode(fp, description, strlen(description));
 583         fputs("</subtitle>\n", fp);
 584
 585         git_revwalk_new(&w, repo);
 586         git_revwalk_push_head(w);
 587         git_revwalk_sorting(w, GIT_SORT_TIME);
 588         git_revwalk_simplify_first_parent(w);
 589
 590         for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
 591                 if (!(ci = commitinfo_getbyoid(&id)))
 592                         break;
 593                 printcommitatom(fp, ci);
 594                 commitinfo_free(ci);
 595         }
 596         git_revwalk_free(w);
 597
 598         fputs("</feed>", fp);
 599
 600         return 0;
 601 }
 602
 603 int
 604 writeblob(git_object *obj, const char *filename, git_off_t filesize)
 605 {
 606         char fpath[PATH_MAX];
 607         char tmp[PATH_MAX] = "";
 608         char *d, *p;
 609         FILE *fp;
 610
 611         snprintf(fpath, sizeof(fpath), "file/%s.html", filename);
 612         d = xdirname(fpath);
 613         if (mkdirp(d)) {
 614                 free(d);
 615                 return 1;
 616         }
 617         free(d);
 618
 619         p = fpath;
 620         while (*p) {
 621                 if (*p == '/')
 622                         strlcat(tmp, "../", sizeof(tmp));
 623                 p++;
 624         }
 625         relpath = tmp;
 626
 627         fp = efopen(fpath, "w");
 628         writeheader(fp);
 629         fputs("<p> ", fp);
 630         xmlencode(fp, filename, strlen(filename));
 631         fprintf(fp, " (%jub)", (uintmax_t)filesize);
 632         fputs("</p><hr/>", fp);
 633
 634         if (git_blob_is_binary((git_blob *)obj)) {
 635                 fputs("<p>Binary file</p>\n", fp);
 636         } else {
 637                 writeblobhtml(fp, (git_blob *)obj);
 638                 if (ferror(fp))
 639                         err(1, "fwrite");
 640         }
 641         writefooter(fp);
 642         fclose(fp);
 643
 644         relpath = "";
 645
 646         return 0;
 647 }
 648
 649 const char *
 650 filemode(git_filemode_t m)
 651 {
 652         static char mode[11];
 653
 654         memset(mode, '-', sizeof(mode) - 1);
 655         mode[10] = '\0';
 656
 657         if (S_ISREG(m))
 658                 mode[0] = '-';
 659         else if (S_ISBLK(m))
 660                 mode[0] = 'b';
 661         else if (S_ISCHR(m))
 662                 mode[0] = 'c';
 663         else if (S_ISDIR(m))
 664                 mode[0] = 'd';
 665         else if (S_ISFIFO(m))
 666                 mode[0] = 'p';
 667         else if (S_ISLNK(m))
 668                 mode[0] = 'l';
 669         else if (S_ISSOCK(m))
 670                 mode[0] = 's';
 671         else
 672                 mode[0] = '?';
 673
 674         if (m & S_IRUSR) mode[1] = 'r';
 675         if (m & S_IWUSR) mode[2] = 'w';
 676         if (m & S_IXUSR) mode[3] = 'x';
 677         if (m & S_IRGRP) mode[4] = 'r';
 678         if (m & S_IWGRP) mode[5] = 'w';
 679         if (m & S_IXGRP) mode[6] = 'x';
 680         if (m & S_IROTH) mode[7] = 'r';
 681         if (m & S_IWOTH) mode[8] = 'w';
 682         if (m & S_IXOTH) mode[9] = 'x';
 683
 684         if (m & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
 685         if (m & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
 686         if (m & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T';
 687
 688         return mode;
 689 }
 690
 691 int
 692 writefilestree(FILE *fp, git_tree *tree, const char *branch, const char *path)
 693 {
 694         const git_tree_entry *entry = NULL;
 695         const char *filename;
 696         char filepath[PATH_MAX];
 697         git_object *obj = NULL;
 698         git_off_t filesize;
 699         size_t count, i;
 700         int ret;
 701
 702         count = git_tree_entrycount(tree);
 703         for (i = 0; i < count; i++) {
 704                 if (!(entry = git_tree_entry_byindex(tree, i)) ||
 705                     git_tree_entry_to_object(&obj, repo, entry))
 706                         return -1;
 707                 filename = git_tree_entry_name(entry);
 708                 switch (git_object_type(obj)) {
 709                 case GIT_OBJ_BLOB:
 710                         break;
 711                 case GIT_OBJ_TREE:
 712                         /* NOTE: recurses */
 713                         ret = writefilestree(fp, (git_tree *)obj, branch,
 714                                              filename);
 715                         git_object_free(obj);
 716                         if (ret)
 717                                 return ret;
 718                         continue;
 719                 default:
 720                         git_object_free(obj);
 721                         continue;
 722                 }
 723                 if (path[0]) {
 724                         snprintf(filepath, sizeof(filepath), "%s/%s",
 725                                  path, filename);
 726                         filename = filepath;
 727                 }
 728                 filesize = git_blob_rawsize((git_blob *)obj);
 729
 730                 fputs("<tr><td>", fp);
 731                 fprintf(fp, "%s", filemode(git_tree_entry_filemode(entry)));
 732                 fprintf(fp, "</td><td><a href=\"%sfile/", relpath);
 733                 xmlencode(fp, filename, strlen(filename));
 734                 fputs(".html\">", fp);
 735                 xmlencode(fp, filename, strlen(filename));
 736                 fputs("</a></td><td class=\"num\">", fp);
 737                 fprintf(fp, "%ju", (uintmax_t)filesize);
 738                 fputs("</td></tr>\n", fp);
 739
 740                 writeblob(obj, filename, filesize);
 741         }
 742
 743         return 0;
 744 }
 745
 746 int
 747 writefiles(FILE *fp, const char *branch)
 748 {
 749         const git_oid *id;
 750         git_tree *tree = NULL;
 751         git_object *obj = NULL;
 752         git_commit *commit = NULL;
 753         int ret = -1;
 754
 755         fputs("<table id=\"files\"><thead>\n<tr>"
 756               "<td>Mode</td><td>Name</td><td class=\"num\">Size</td>"
 757               "</tr>\n</thead><tbody>\n", fp);
 758
 759         if (git_revparse_single(&obj, repo, branch))
 760                 goto err;
 761         id = git_object_id(obj);
 762         if (git_commit_lookup(&commit, repo, id) ||
 763             git_commit_tree(&tree, commit))
 764                 goto err;
 765         ret = writefilestree(fp, tree, branch, "");
 766
 767 err:
 768         fputs("</tbody></table>", fp);
 769
 770         git_object_free(obj);
 771         git_commit_free(commit);
 772         git_tree_free(tree);
 773
 774         return ret;
 775 }
 776
 777 int
 778 writebranches(FILE *fp)
 779 {
 780         struct commitinfo *ci;
 781         git_branch_iterator *it = NULL;
 782         git_branch_t branch;
 783         git_reference *ref = NULL, *dref = NULL;
 784         const git_oid *id = NULL;
 785         const char *branchname = NULL;
 786         size_t len;
 787         int ret = -1;
 788
 789         /* log for local branches */
 790         if (git_branch_iterator_new(&it, repo, GIT_BRANCH_LOCAL))
 791                 return -1;
 792
 793         fputs("<h2>Branches</h2><table id=\"branches\"><thead>\n<tr><td>Branch</td><td>Age</td>"
 794                   "<td>Commit message</td>"
 795                   "<td>Author</td><td>Files</td><td class=\"num\">+</td>"
 796                   "<td class=\"num\">-</td></tr>\n</thead><tbody>\n", fp);
 797
 798         while (!git_branch_next(&ref, &branch, it)) {
 799                 if (git_branch_name(&branchname, ref))
 800                         continue;
 801
 802                 id = NULL;
 803                 switch (git_reference_type(ref)) {
 804                 case GIT_REF_SYMBOLIC:
 805                         if (git_reference_resolve(&dref, ref))
 806                                 goto err;
 807                         id = git_reference_target(dref);
 808                         break;
 809                 case GIT_REF_OID:
 810                         id = git_reference_target(ref);
 811                         break;
 812                 default:
 813                         continue;
 814                 }
 815                 if (!id)
 816                         goto err;
 817                 if (!(ci = commitinfo_getbyoid(id)))
 818                         break;
 819
 820                 relpath = "";
 821
 822                 fputs("<tr><td>", fp);
 823                 xmlencode(fp, branchname, strlen(branchname));
 824                 fputs("</td><td>", fp);
 825                 if (ci->author)
 826                         printtimeshort(fp, &(ci->author->when));
 827                 fputs("</td><td>", fp);
 828                 if (ci->summary) {
 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                 }
 836                 fputs("</td><td>", fp);
 837                 if (ci->author)
 838                         xmlencode(fp, ci->author->name, strlen(ci->author->name));
 839                 fputs("</td><td class=\"num\">", fp);
 840                 fprintf(fp, "%zu", ci->filecount);
 841                 fputs("</td><td class=\"num\">", fp);
 842                 fprintf(fp, "+%zu", ci->addcount);
 843                 fputs("</td><td class=\"num\">", fp);
 844                 fprintf(fp, "-%zu", ci->delcount);
 845                 fputs("</td></tr>\n", fp);
 846
 847                 relpath = "../";
 848
 849                 commitinfo_free(ci);
 850                 git_reference_free(ref);
 851                 git_reference_free(dref);
 852                 ref = NULL;
 853                 dref = NULL;
 854         }
 855         ret = 0;
 856
 857 err:
 858         fputs("</tbody></table>", fp);
 859         git_reference_free(ref);
 860         git_reference_free(dref);
 861         git_branch_iterator_free(it);
 862
 863         return ret;
 864 }
 865
 866 int
 867 tagcompare(void *s1, void *s2)
 868 {
 869         return strcmp(*(char **)s1, *(char **)s2);
 870 }
 871
 872 int
 873 writetags(FILE *fp)
 874 {
 875         struct commitinfo *ci;
 876         git_strarray tagnames;
 877         git_object *obj = NULL;
 878         git_tag *tag = 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=\"tags\"><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
 905                 /* lookup actual commit (from annotated tag etc) */
 906                 if (!git_tag_lookup(&tag, repo, id)) {
 907                         git_object_free(obj);
 908                         obj = NULL;
 909                         if (git_tag_peel(&obj, tag))
 910                                 break;
 911                         git_tag_free(tag);
 912                         tag = NULL;
 913                         id = git_object_id(obj);
 914                 }
 915
 916                 if (!(ci = commitinfo_getbyoid(id)))
 917                         break;
 918
 919                 relpath = "";
 920
 921                 fputs("<tr><td>", fp);
 922                 xmlencode(fp, tagnames.strings[i], strlen(tagnames.strings[i]));
 923                 fputs("</td><td>", fp);
 924                 if (ci->author)
 925                         printtimeshort(fp, &(ci->author->when));
 926                 fputs("</td><td>", fp);
 927                 if (ci->summary) {
 928                         fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 929                         if ((len = strlen(ci->summary)) > summarylen) {
 930                                 xmlencode(fp, ci->summary, summarylen - 1);
 931                                 fputs("…", fp);
 932                         } else {
 933                                 xmlencode(fp, ci->summary, len);
 934                         }
 935                         fputs("</a>", fp);
 936                 }
 937                 fputs("</td><td>", fp);
 938                 if (ci->author)
 939                         xmlencode(fp, ci->author->name, strlen(ci->author->name));
 940                 fputs("</td><td class=\"num\">", fp);
 941                 fprintf(fp, "%zu", ci->filecount);
 942                 fputs("</td><td class=\"num\">", fp);
 943                 fprintf(fp, "+%zu", ci->addcount);
 944                 fputs("</td><td class=\"num\">", fp);
 945                 fprintf(fp, "-%zu", ci->delcount);
 946                 fputs("</td></tr>\n", fp);
 947
 948                 relpath = "../";
 949
 950                 commitinfo_free(ci);
 951                 git_object_free(obj);
 952                 obj = NULL;
 953         }
 954         fputs("</tbody></table>", fp);
 955         git_strarray_free(&tagnames);
 956         git_tag_free(tag);
 957         git_object_free(obj);
 958
 959         return 0;
 960 }
 961
 962 int
 963 writerefs(FILE *fp)
 964 {
 965         int ret;
 966
 967         if ((ret = writebranches(fp)))
 968                 return ret;
 969         fputs("<br/>", fp);
 970         return writetags(fp);
 971 }
 972
 973 int
 974 main(int argc, char *argv[])
 975 {
 976         git_object *obj = NULL;
 977         const git_error *e = NULL;
 978         FILE *fp, *fpread;
 979         char path[PATH_MAX], *p;
 980         int status;
 981
 982         if (argc != 2) {
 983                 fprintf(stderr, "%s <repodir>\n", argv[0]);
 984                 return 1;
 985         }
 986         repodir = argv[1];
 987
 988         git_libgit2_init();
 989
 990         if ((status = git_repository_open_ext(&repo, repodir,
 991                 GIT_REPOSITORY_OPEN_NO_SEARCH, NULL)) < 0) {
 992                 e = giterr_last();
 993                 fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
 994                 return status;
 995         }
 996
 997         /* use directory name as name */
 998         p = xbasename(repodir);
 999         snprintf(name, sizeof(name), "%s", p);
1000         free(p);
1001
1002         /* read description or .git/description */
1003         snprintf(path, sizeof(path), "%s%s%s",
1004                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
1005         if (!(fpread = fopen(path, "r"))) {
1006                 snprintf(path, sizeof(path), "%s%s%s",
1007                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
1008                 fpread = fopen(path, "r");
1009         }
1010         if (fpread) {
1011                 if (!fgets(description, sizeof(description), fpread))
1012                         description[0] = '\0';
1013                 fclose(fpread);
1014         }
1015
1016         /* read url or .git/url */
1017         snprintf(path, sizeof(path), "%s%s%s",
1018                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "url");
1019         if (!(fpread = fopen(path, "r"))) {
1020                 snprintf(path, sizeof(path), "%s%s%s",
1021                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/url");
1022                 fpread = fopen(path, "r");
1023         }
1024         if (fpread) {
1025                 if (!fgets(cloneurl, sizeof(cloneurl), fpread))
1026                         cloneurl[0] = '\0';
1027                 cloneurl[strcspn(cloneurl, "\n")] = '\0';
1028                 fclose(fpread);
1029         }
1030
1031         /* check LICENSE */
1032         haslicense = !git_revparse_single(&obj, repo, "HEAD:LICENSE");
1033         git_object_free(obj);
1034         /* check README */
1035         hasreadme = !git_revparse_single(&obj, repo, "HEAD:README");
1036         git_object_free(obj);
1037
1038         /* log for HEAD */
1039         mkdir("log", 0755);
1040         fp = efopen("log.html", "w");
1041         relpath = "";
1042         writeheader(fp);
1043         writelog(fp, "HEAD");
1044         writefooter(fp);
1045         fclose(fp);
1046
1047         /* files for HEAD */
1048         fp = efopen("files.html", "w");
1049         writeheader(fp);
1050         writefiles(fp, "HEAD");
1051         writefooter(fp);
1052         fclose(fp);
1053
1054         /* summary page with branches and tags */
1055         fp = efopen("refs.html", "w");
1056         writeheader(fp);
1057         writerefs(fp);
1058         writefooter(fp);
1059         fclose(fp);
1060
1061         /* Atom feed */
1062         fp = efopen("atom.xml", "w");
1063         writeatom(fp);
1064         fclose(fp);
1065
1066         /* cleanup */
1067         git_repository_free(repo);
1068         git_libgit2_shutdown();
1069
1070         return 0;
1071 }