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 refs_cmp(const void *v1, const void *v2)
 779 {
 780         git_reference *r1 = (*(git_reference **)v1);
 781         git_reference *r2 = (*(git_reference **)v2);
 782         int t1, t2;
 783
 784         t1 = git_reference_is_branch(r1);
 785         t2 = git_reference_is_branch(r2);
 786
 787         if (t1 != t2)
 788                 return t1 - t2;
 789
 790         return strcmp(git_reference_shorthand(r1),
 791                       git_reference_shorthand(r2));
 792 }
 793
 794 int
 795 writerefs(FILE *fp)
 796 {
 797         struct commitinfo *ci;
 798         const git_oid *id = NULL;
 799         git_object *obj = NULL;
 800         git_reference *dref = NULL, *r, *ref = NULL;
 801         git_reference_iterator *it = NULL;
 802         git_reference **refs = NULL;
 803         size_t count, i, j, len, refcount = 0;
 804         const char *cols[] = { "Branch", "Tag" }; /* first column title */
 805         const char *titles[] = { "Branches", "Tags" };
 806         const char *ids[] = { "branches", "tags" };
 807         const char *name;
 808
 809         if (git_reference_iterator_new(&it, repo))
 810                 return -1;
 811
 812         for (refcount = 0; !git_reference_next(&ref, it); refcount++) {
 813                 if (!(refs = reallocarray(refs, refcount + 1, sizeof(git_reference *))))
 814                         err(1, "realloc");
 815                 refs[refcount] = ref;
 816         }
 817         git_reference_iterator_free(it);
 818
 819         /* sort by type then shorthand name */
 820         qsort(refs, refcount, sizeof(git_reference *), refs_cmp);
 821
 822         for (j = 0; j < 2; j++) {
 823                 for (i = 0, count = 0; i < refcount; i++) {
 824                         if (git_reference_is_branch(refs[i]) && j == 0)
 825                                 ;
 826                         else if (git_reference_is_tag(refs[i]) && j == 1)
 827                                 ;
 828                         else
 829                                 continue;
 830
 831                         id = NULL;
 832                         r = NULL;
 833                         switch (git_reference_type(refs[i])) {
 834                         case GIT_REF_SYMBOLIC:
 835                                 if (git_reference_resolve(&dref, refs[i]))
 836                                         goto err;
 837                                 r = dref;
 838                                 break;
 839                         case GIT_REF_OID:
 840                                 r = refs[i];
 841                                 break;
 842                         default:
 843                                 continue;
 844                         }
 845                         if (!(id = git_reference_target(r)))
 846                                 goto err;
 847                         if (git_reference_peel(&obj, r, GIT_OBJ_ANY))
 848                                 goto err;
 849                         if (!(id = git_object_id(obj)))
 850                                 goto err;
 851                         if (!(ci = commitinfo_getbyoid(id)))
 852                                 break;
 853
 854                         /* print header if it has an entry (first). */
 855                         if (++count == 1) {
 856                                 fprintf(fp, "<h2>%s</h2><table id=\"%s\"><thead>\n<tr><td>%s</td>"
 857                                       "<td>Age</td><td>Commit message</td>"
 858                                       "<td>Author</td><td>Files</td><td class=\"num\">+</td>"
 859                                       "<td class=\"num\">-</td></tr>\n</thead><tbody>\n",
 860                                       titles[j], ids[j], cols[j]);
 861                         }
 862
 863                         relpath = "";
 864                         name = git_reference_shorthand(r);
 865
 866                         fputs("<tr><td>", fp);
 867                         xmlencode(fp, name, strlen(name));
 868                         fputs("</td><td>", fp);
 869                         if (ci->author)
 870                                 printtimeshort(fp, &(ci->author->when));
 871                         fputs("</td><td>", fp);
 872                         if (ci->summary) {
 873                                 fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 874                                 if ((len = strlen(ci->summary)) > summarylen) {
 875                                         xmlencode(fp, ci->summary, summarylen - 1);
 876                                         fputs("…", fp);
 877                                 } else {
 878                                         xmlencode(fp, ci->summary, len);
 879                                 }
 880                                 fputs("</a>", fp);
 881                         }
 882                         fputs("</td><td>", fp);
 883                         if (ci->author)
 884                                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 885                         fputs("</td><td class=\"num\">", fp);
 886                         fprintf(fp, "%zu", ci->filecount);
 887                         fputs("</td><td class=\"num\">", fp);
 888                         fprintf(fp, "+%zu", ci->addcount);
 889                         fputs("</td><td class=\"num\">", fp);
 890                         fprintf(fp, "-%zu", ci->delcount);
 891                         fputs("</td></tr>\n", fp);
 892
 893                         relpath = "../";
 894
 895                         commitinfo_free(ci);
 896                         git_reference_free(dref);
 897                         dref = NULL;
 898                 }
 899                 /* table footer */
 900                 if (count)
 901                         fputs("</tbody></table>", fp);
 902         }
 903
 904 err:
 905         git_reference_free(dref);
 906
 907         for (i = 0; i < refcount; i++)
 908                 git_reference_free(refs[i]);
 909         free(refs);
 910
 911         return 0;
 912 }
 913
 914 int
 915 main(int argc, char *argv[])
 916 {
 917         git_object *obj = NULL;
 918         const git_error *e = NULL;
 919         FILE *fp, *fpread;
 920         char path[PATH_MAX], *p;
 921         int status;
 922
 923         if (argc != 2) {
 924                 fprintf(stderr, "%s <repodir>\n", argv[0]);
 925                 return 1;
 926         }
 927         repodir = argv[1];
 928
 929         git_libgit2_init();
 930
 931         if ((status = git_repository_open_ext(&repo, repodir,
 932                 GIT_REPOSITORY_OPEN_NO_SEARCH, NULL)) < 0) {
 933                 e = giterr_last();
 934                 fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
 935                 return status;
 936         }
 937
 938         /* use directory name as name */
 939         p = xbasename(repodir);
 940         snprintf(name, sizeof(name), "%s", p);
 941         free(p);
 942
 943         /* read description or .git/description */
 944         snprintf(path, sizeof(path), "%s%s%s",
 945                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 946         if (!(fpread = fopen(path, "r"))) {
 947                 snprintf(path, sizeof(path), "%s%s%s",
 948                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 949                 fpread = fopen(path, "r");
 950         }
 951         if (fpread) {
 952                 if (!fgets(description, sizeof(description), fpread))
 953                         description[0] = '\0';
 954                 fclose(fpread);
 955         }
 956
 957         /* read url or .git/url */
 958         snprintf(path, sizeof(path), "%s%s%s",
 959                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "url");
 960         if (!(fpread = fopen(path, "r"))) {
 961                 snprintf(path, sizeof(path), "%s%s%s",
 962                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/url");
 963                 fpread = fopen(path, "r");
 964         }
 965         if (fpread) {
 966                 if (!fgets(cloneurl, sizeof(cloneurl), fpread))
 967                         cloneurl[0] = '\0';
 968                 cloneurl[strcspn(cloneurl, "\n")] = '\0';
 969                 fclose(fpread);
 970         }
 971
 972         /* check LICENSE */
 973         haslicense = !git_revparse_single(&obj, repo, "HEAD:LICENSE");
 974         git_object_free(obj);
 975         /* check README */
 976         hasreadme = !git_revparse_single(&obj, repo, "HEAD:README");
 977         git_object_free(obj);
 978
 979         /* log for HEAD */
 980         mkdir("log", 0755);
 981         fp = efopen("log.html", "w");
 982         relpath = "";
 983         writeheader(fp);
 984         writelog(fp, "HEAD");
 985         writefooter(fp);
 986         fclose(fp);
 987
 988         /* files for HEAD */
 989         fp = efopen("files.html", "w");
 990         writeheader(fp);
 991         writefiles(fp, "HEAD");
 992         writefooter(fp);
 993         fclose(fp);
 994
 995         /* summary page with branches and tags */
 996         fp = efopen("refs.html", "w");
 997         writeheader(fp);
 998         writerefs(fp);
 999         writefooter(fp);
1000         fclose(fp);
1001
1002         /* Atom feed */
1003         fp = efopen("atom.xml", "w");
1004         writeatom(fp);
1005         fclose(fp);
1006
1007         /* cleanup */
1008         git_repository_free(repo);
1009         git_libgit2_shutdown();
1010
1011         return 0;
1012 }