stagit.c

   1 #include <sys/stat.h>
   2 #include <sys/types.h>
   3
   4 #include <err.h>
   5 #include <errno.h>
   6 #include <libgen.h>
   7 #include <limits.h>
   8 #include <stdint.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <time.h>
  13 #include <unistd.h>
  14
  15 #include <git2.h>
  16
  17 #include "compat.h"
  18
  19 struct deltainfo {
  20         git_patch *patch;
  21
  22         size_t addcount;
  23         size_t delcount;
  24 };
  25
  26 struct commitinfo {
  27         const git_oid *id;
  28
  29         char oid[GIT_OID_HEXSZ + 1];
  30         char parentoid[GIT_OID_HEXSZ + 1];
  31
  32         const git_signature *author;
  33         const git_signature *committer;
  34         const char          *summary;
  35         const char          *msg;
  36
  37         git_diff   *diff;
  38         git_commit *commit;
  39         git_commit *parent;
  40         git_tree   *commit_tree;
  41         git_tree   *parent_tree;
  42
  43         size_t addcount;
  44         size_t delcount;
  45         size_t filecount;
  46
  47         struct deltainfo **deltas;
  48         size_t ndeltas;
  49 };
  50
  51 static git_repository *repo;
  52
  53 static const char *relpath = "";
  54 static const char *repodir;
  55
  56 static char *name = "";
  57 static char *strippedname = "";
  58 static char description[255];
  59 static char cloneurl[1024];
  60 static char *submodules;
  61 static char *licensefiles[] = { "HEAD:LICENSE", "HEAD:LICENSE.md", "HEAD:COPYING" };
  62 static char *license;
  63 static char *readmefiles[] = { "HEAD:README", "HEAD:README.md" };
  64 static char *readme;
  65 static long long nlogcommits = -1; /* < 0 indicates not used */
  66
  67 /* cache */
  68 static git_oid lastoid;
  69 static char lastoidstr[GIT_OID_HEXSZ + 2]; /* id + newline + NUL byte */
  70 static FILE *rcachefp, *wcachefp;
  71 static const char *cachefile;
  72
  73 void
  74 joinpath(char *buf, size_t bufsiz, const char *path, const char *path2)
  75 {
  76         int r;
  77
  78         r = snprintf(buf, bufsiz, "%s%s%s",
  79                 path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
  80         if (r < 0 || (size_t)r >= bufsiz)
  81                 errx(1, "path truncated: '%s%s%s'",
  82                         path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
  83 }
  84
  85 void
  86 deltainfo_free(struct deltainfo *di)
  87 {
  88         if (!di)
  89                 return;
  90         git_patch_free(di->patch);
  91         memset(di, 0, sizeof(*di));
  92         free(di);
  93 }
  94
  95 int
  96 commitinfo_getstats(struct commitinfo *ci)
  97 {
  98         struct deltainfo *di;
  99         git_diff_options opts;
 100         git_diff_find_options fopts;
 101         const git_diff_delta *delta;
 102         const git_diff_hunk *hunk;
 103         const git_diff_line *line;
 104         git_patch *patch = NULL;
 105         size_t ndeltas, nhunks, nhunklines;
 106         size_t i, j, k;
 107
 108         if (git_tree_lookup(&(ci->commit_tree), repo, git_commit_tree_id(ci->commit)))
 109                 goto err;
 110         if (!git_commit_parent(&(ci->parent), ci->commit, 0)) {
 111                 if (git_tree_lookup(&(ci->parent_tree), repo, git_commit_tree_id(ci->parent))) {
 112                         ci->parent = NULL;
 113                         ci->parent_tree = NULL;
 114                 }
 115         }
 116
 117         git_diff_init_options(&opts, GIT_DIFF_OPTIONS_VERSION);
 118         opts.flags |= GIT_DIFF_DISABLE_PATHSPEC_MATCH |
 119                       GIT_DIFF_IGNORE_SUBMODULES |
 120                       GIT_DIFF_INCLUDE_TYPECHANGE;
 121         if (git_diff_tree_to_tree(&(ci->diff), repo, ci->parent_tree, ci->commit_tree, &opts))
 122                 goto err;
 123
 124         if (git_diff_find_init_options(&fopts, GIT_DIFF_FIND_OPTIONS_VERSION))
 125                 goto err;
 126         /* find renames and copies, exact matches (no heuristic) for renames. */
 127         fopts.flags |= GIT_DIFF_FIND_RENAMES | GIT_DIFF_FIND_COPIES |
 128                        GIT_DIFF_FIND_EXACT_MATCH_ONLY;
 129         if (git_diff_find_similar(ci->diff, &fopts))
 130                 goto err;
 131
 132         ndeltas = git_diff_num_deltas(ci->diff);
 133         if (ndeltas && !(ci->deltas = calloc(ndeltas, sizeof(struct deltainfo *))))
 134                 err(1, "calloc");
 135
 136         for (i = 0; i < ndeltas; i++) {
 137                 if (git_patch_from_diff(&patch, ci->diff, i))
 138                         goto err;
 139
 140                 if (!(di = calloc(1, sizeof(struct deltainfo))))
 141                         err(1, "calloc");
 142                 di->patch = patch;
 143                 ci->deltas[i] = di;
 144
 145                 delta = git_patch_get_delta(patch);
 146
 147                 /* skip stats for binary data */
 148                 if (delta->flags & GIT_DIFF_FLAG_BINARY)
 149                         continue;
 150
 151                 nhunks = git_patch_num_hunks(patch);
 152                 for (j = 0; j < nhunks; j++) {
 153                         if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
 154                                 break;
 155                         for (k = 0; ; k++) {
 156                                 if (git_patch_get_line_in_hunk(&line, patch, j, k))
 157                                         break;
 158                                 if (line->old_lineno == -1) {
 159                                         di->addcount++;
 160                                         ci->addcount++;
 161                                 } else if (line->new_lineno == -1) {
 162                                         di->delcount++;
 163                                         ci->delcount++;
 164                                 }
 165                         }
 166                 }
 167         }
 168         ci->ndeltas = i;
 169         ci->filecount = i;
 170
 171         return 0;
 172
 173 err:
 174         git_diff_free(ci->diff);
 175         ci->diff = NULL;
 176         git_tree_free(ci->commit_tree);
 177         ci->commit_tree = NULL;
 178         git_tree_free(ci->parent_tree);
 179         ci->parent_tree = NULL;
 180         git_commit_free(ci->parent);
 181         ci->parent = NULL;
 182
 183         if (ci->deltas)
 184                 for (i = 0; i < ci->ndeltas; i++)
 185                         deltainfo_free(ci->deltas[i]);
 186         free(ci->deltas);
 187         ci->deltas = NULL;
 188         ci->ndeltas = 0;
 189         ci->addcount = 0;
 190         ci->delcount = 0;
 191         ci->filecount = 0;
 192
 193         return -1;
 194 }
 195
 196 void
 197 commitinfo_free(struct commitinfo *ci)
 198 {
 199         size_t i;
 200
 201         if (!ci)
 202                 return;
 203         if (ci->deltas)
 204                 for (i = 0; i < ci->ndeltas; i++)
 205                         deltainfo_free(ci->deltas[i]);
 206
 207         free(ci->deltas);
 208         git_diff_free(ci->diff);
 209         git_tree_free(ci->commit_tree);
 210         git_tree_free(ci->parent_tree);
 211         git_commit_free(ci->commit);
 212         git_commit_free(ci->parent);
 213         memset(ci, 0, sizeof(*ci));
 214         free(ci);
 215 }
 216
 217 struct commitinfo *
 218 commitinfo_getbyoid(const git_oid *id)
 219 {
 220         struct commitinfo *ci;
 221
 222         if (!(ci = calloc(1, sizeof(struct commitinfo))))
 223                 err(1, "calloc");
 224
 225         if (git_commit_lookup(&(ci->commit), repo, id))
 226                 goto err;
 227         ci->id = id;
 228
 229         git_oid_tostr(ci->oid, sizeof(ci->oid), git_commit_id(ci->commit));
 230         git_oid_tostr(ci->parentoid, sizeof(ci->parentoid), git_commit_parent_id(ci->commit, 0));
 231
 232         ci->author = git_commit_author(ci->commit);
 233         ci->committer = git_commit_committer(ci->commit);
 234         ci->summary = git_commit_summary(ci->commit);
 235         ci->msg = git_commit_message(ci->commit);
 236
 237         return ci;
 238
 239 err:
 240         commitinfo_free(ci);
 241
 242         return NULL;
 243 }
 244
 245 FILE *
 246 efopen(const char *name, const char *flags)
 247 {
 248         FILE *fp;
 249
 250         if (!(fp = fopen(name, flags)))
 251                 err(1, "fopen: '%s'", name);
 252
 253         return fp;
 254 }
 255
 256 /* Escape characters below as HTML 2.0 / XML 1.0. */
 257 void
 258 xmlencode(FILE *fp, const char *s, size_t len)
 259 {
 260         size_t i;
 261
 262         for (i = 0; *s && i < len; s++, i++) {
 263                 switch(*s) {
 264                 case '<':  fputs("&lt;",   fp); break;
 265                 case '>':  fputs("&gt;",   fp); break;
 266                 case '\'': fputs("&#39;",  fp); break;
 267                 case '&':  fputs("&amp;",  fp); break;
 268                 case '"':  fputs("&quot;", fp); break;
 269                 default:   fputc(*s, fp);
 270                 }
 271         }
 272 }
 273
 274 int
 275 mkdirp(const char *path)
 276 {
 277         char tmp[PATH_MAX], *p;
 278
 279         if (strlcpy(tmp, path, sizeof(tmp)) >= sizeof(tmp))
 280                 errx(1, "path truncated: '%s'", path);
 281         for (p = tmp + (tmp[0] == '/'); *p; p++) {
 282                 if (*p != '/')
 283                         continue;
 284                 *p = '\0';
 285                 if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
 286                         return -1;
 287                 *p = '/';
 288         }
 289         if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
 290                 return -1;
 291         return 0;
 292 }
 293
 294 void
 295 printtimez(FILE *fp, const git_time *intime)
 296 {
 297         struct tm *intm;
 298         time_t t;
 299         char out[32];
 300
 301         t = (time_t)intime->time;
 302         if (!(intm = gmtime(&t)))
 303                 return;
 304         strftime(out, sizeof(out), "%Y-%m-%dT%H:%M:%SZ", intm);
 305         fputs(out, fp);
 306 }
 307
 308 void
 309 printtime(FILE *fp, const git_time *intime)
 310 {
 311         struct tm *intm;
 312         time_t t;
 313         char out[32];
 314
 315         t = (time_t)intime->time + (intime->offset * 60);
 316         if (!(intm = gmtime(&t)))
 317                 return;
 318         strftime(out, sizeof(out), "%a, %e %b %Y %H:%M:%S", intm);
 319         if (intime->offset < 0)
 320                 fprintf(fp, "%s -%02d%02d", out,
 321                             -(intime->offset) / 60, -(intime->offset) % 60);
 322         else
 323                 fprintf(fp, "%s +%02d%02d", out,
 324                             intime->offset / 60, intime->offset % 60);
 325 }
 326
 327 void
 328 printtimeshort(FILE *fp, const git_time *intime)
 329 {
 330         struct tm *intm;
 331         time_t t;
 332         char out[32];
 333
 334         t = (time_t)intime->time;
 335         if (!(intm = gmtime(&t)))
 336                 return;
 337         strftime(out, sizeof(out), "%Y-%m-%d %H:%M", intm);
 338         fputs(out, fp);
 339 }
 340
 341 void
 342 writeheader(FILE *fp, const char *title)
 343 {
 344         fputs("<!DOCTYPE html>\n"
 345                 "<html>\n<head>\n"
 346                 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
 347                 "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n"
 348                 "<title>", fp);
 349         xmlencode(fp, title, strlen(title));
 350         if (title[0] && strippedname[0])
 351                 fputs(" - ", fp);
 352         xmlencode(fp, strippedname, strlen(strippedname));
 353         if (description[0])
 354                 fputs(" - ", fp);
 355         xmlencode(fp, description, strlen(description));
 356         fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
 357         fprintf(fp, "<link rel=\"alternate\" type=\"application/atom+xml\" title=\"%s Atom Feed\" href=\"%satom.xml\" />\n",
 358                 name, relpath);
 359         fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
 360         fputs("</head>\n<body>\n<table><tr><td>", fp);
 361         fprintf(fp, "<a href=\"../%s\"><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /></a>",
 362                 relpath, relpath);
 363         fputs("</td><td><h1>", fp);
 364         xmlencode(fp, strippedname, strlen(strippedname));
 365         fputs("</h1><span class=\"desc\">", fp);
 366         xmlencode(fp, description, strlen(description));
 367         fputs("</span></td></tr>", fp);
 368         if (cloneurl[0]) {
 369                 fputs("<tr class=\"url\"><td></td><td><span class=\"clone\">git clone <a href=\"", fp);
 370                 xmlencode(fp, cloneurl, strlen(cloneurl));
 371                 fputs("\">", fp);
 372                 xmlencode(fp, cloneurl, strlen(cloneurl));
 373                 fputs("</a></span></td></tr>", fp);
 374         }
 375         fputs("<tr><td></td><td>\n", fp);
 376         fprintf(fp, "<a href=\"%slog.html\">Log</a> | ", relpath);
 377         fprintf(fp, "<a href=\"%sfiles.html\">Files</a> | ", relpath);
 378         fprintf(fp, "<a href=\"%srefs.html\">Refs</a>", relpath);
 379         if (submodules)
 380                 fprintf(fp, " | <a href=\"%sfile/%s.html\">Submodules</a>",
 381                         relpath, submodules);
 382         if (readme)
 383                 fprintf(fp, " | <a href=\"%sfile/%s.html\">README</a>",
 384                         relpath, readme);
 385         if (license)
 386                 fprintf(fp, " | <a href=\"%sfile/%s.html\">LICENSE</a>",
 387                         relpath, license);
 388         fputs("</td></tr></table>\n<hr/>\n<div id=\"content\">\n", fp);
 389 }
 390
 391 void
 392 writefooter(FILE *fp)
 393 {
 394         fputs("</div>\n</body>\n</html>\n", fp);
 395 }
 396
 397 int
 398 syntax_highlight(const char *filename, FILE *fp, const char *s, size_t len)
 399 {
 400         // Copy STDOUT
 401         int stdout_copy = dup(1);
 402         // Redirect STDOUT
 403         dup2(fileno(fp), 1);
 404
 405         // Ruby script for syntax highlighting.
 406         FILE *child = popen("./highlight", "w");
 407         if (child == NULL) {
 408                 printf("child is null: %s", strerror(errno));
 409                 exit(1);
 410         }
 411         // Give filename through STDIN:
 412         fprintf(child, "%s\n", filename);
 413         // Give code to highlight through STDIN:
 414         int lc;
 415         size_t i;
 416         for (i = 0; *s && i < len; s++, i++) {
 417                 if (*s == '\n') lc++;
 418                 fprintf(child, "%c", *s);
 419         }
 420
 421         pclose(child);
 422         // Give back STDOUT.
 423         dup2(stdout_copy, 1);
 424         return lc;
 425 }
 426
 427 int
 428 writeblobhtml(const char *filename, FILE *fp, const git_blob *blob)
 429 {
 430         int lc = 0;
 431         const char *s = git_blob_rawcontent(blob);
 432         git_off_t len = git_blob_rawsize(blob);
 433
 434         fputs("<div id=\"blob\">\n", fp);
 435
 436         if (len > 0) {
 437                 lc = syntax_highlight(filename, fp, s, len);
 438         }
 439
 440         fputs("</div>\n", fp);
 441
 442         return lc;
 443 }
 444
 445 void
 446 printcommit(FILE *fp, struct commitinfo *ci)
 447 {
 448         fprintf(fp, "<b>commit</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 449                 relpath, ci->oid, ci->oid);
 450
 451         if (ci->parentoid[0])
 452                 fprintf(fp, "<b>parent</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 453                         relpath, ci->parentoid, ci->parentoid);
 454
 455         if (ci->author) {
 456                 fputs("<b>Author:</b> ", fp);
 457                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 458                 fputs(" &lt;<a href=\"mailto:", fp);
 459                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 460                 fputs("\">", fp);
 461                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 462                 fputs("</a>&gt;\n<b>Date:</b>   ", fp);
 463                 printtime(fp, &(ci->author->when));
 464                 fputc('\n', fp);
 465         }
 466         if (ci->msg) {
 467                 fputc('\n', fp);
 468                 xmlencode(fp, ci->msg, strlen(ci->msg));
 469                 fputc('\n', fp);
 470         }
 471 }
 472
 473 void
 474 printshowfile(FILE *fp, struct commitinfo *ci)
 475 {
 476         const git_diff_delta *delta;
 477         const git_diff_hunk *hunk;
 478         const git_diff_line *line;
 479         git_patch *patch;
 480         size_t nhunks, nhunklines, changed, add, del, total, i, j, k;
 481         char linestr[80];
 482         int c;
 483
 484         printcommit(fp, ci);
 485
 486         if (!ci->deltas)
 487                 return;
 488
 489         if (ci->filecount > 1000   ||
 490             ci->ndeltas   > 1000   ||
 491             ci->addcount  > 100000 ||
 492             ci->delcount  > 100000) {
 493                 fputs("Diff is too large, output suppressed.\n", fp);
 494                 return;
 495         }
 496
 497         /* diff stat */
 498         fputs("<b>Diffstat:</b>\n<table>", fp);
 499         for (i = 0; i < ci->ndeltas; i++) {
 500                 delta = git_patch_get_delta(ci->deltas[i]->patch);
 501
 502                 switch (delta->status) {
 503                 case GIT_DELTA_ADDED:      c = 'A'; break;
 504                 case GIT_DELTA_COPIED:     c = 'C'; break;
 505                 case GIT_DELTA_DELETED:    c = 'D'; break;
 506                 case GIT_DELTA_MODIFIED:   c = 'M'; break;
 507                 case GIT_DELTA_RENAMED:    c = 'R'; break;
 508                 case GIT_DELTA_TYPECHANGE: c = 'T'; break;
 509                 default:                   c = ' '; break;
 510                 }
 511                 if (c == ' ')
 512                         fprintf(fp, "<tr><td>%c", c);
 513                 else
 514                         fprintf(fp, "<tr><td class=\"%c\">%c", c, c);
 515
 516                 fprintf(fp, "</td><td><a href=\"#h%zu\">", i);
 517                 xmlencode(fp, delta->old_file.path, strlen(delta->old_file.path));
 518                 if (strcmp(delta->old_file.path, delta->new_file.path)) {
 519                         fputs(" -&gt; ", fp);
 520                         xmlencode(fp, delta->new_file.path, strlen(delta->new_file.path));
 521                 }
 522
 523                 add = ci->deltas[i]->addcount;
 524                 del = ci->deltas[i]->delcount;
 525                 changed = add + del;
 526                 total = sizeof(linestr) - 2;
 527                 if (changed > total) {
 528                         if (add)
 529                                 add = ((float)total / changed * add) + 1;
 530                         if (del)
 531                                 del = ((float)total / changed * del) + 1;
 532                 }
 533                 memset(&linestr, '+', add);
 534                 memset(&linestr[add], '-', del);
 535
 536                 fprintf(fp, "</a></td><td> | </td><td class=\"num\">%zu</td><td><span class=\"i\">",
 537                         ci->deltas[i]->addcount + ci->deltas[i]->delcount);
 538                 fwrite(&linestr, 1, add, fp);
 539                 fputs("</span><span class=\"d\">", fp);
 540                 fwrite(&linestr[add], 1, del, fp);
 541                 fputs("</span></td></tr>\n", fp);
 542         }
 543         fprintf(fp, "</table></pre><pre>%zu file%s changed, %zu insertion%s(+), %zu deletion%s(-)\n",
 544                 ci->filecount, ci->filecount == 1 ? "" : "s",
 545                 ci->addcount,  ci->addcount  == 1 ? "" : "s",
 546                 ci->delcount,  ci->delcount  == 1 ? "" : "s");
 547
 548         fputs("<hr/>", fp);
 549
 550         for (i = 0; i < ci->ndeltas; i++) {
 551                 patch = ci->deltas[i]->patch;
 552                 delta = git_patch_get_delta(patch);
 553                 fprintf(fp, "<b>diff --git a/<a id=\"h%zu\" href=\"%sfile/", i, relpath);
 554                 xmlencode(fp, delta->old_file.path, strlen(delta->old_file.path));
 555                 fputs(".html\">", fp);
 556                 xmlencode(fp, delta->old_file.path, strlen(delta->old_file.path));
 557                 fprintf(fp, "</a> b/<a href=\"%sfile/", relpath);
 558                 xmlencode(fp, delta->new_file.path, strlen(delta->new_file.path));
 559                 fprintf(fp, ".html\">");
 560                 xmlencode(fp, delta->new_file.path, strlen(delta->new_file.path));
 561                 fprintf(fp, "</a></b>\n");
 562
 563                 /* check binary data */
 564                 if (delta->flags & GIT_DIFF_FLAG_BINARY) {
 565                         fputs("Binary files differ.\n", fp);
 566                         continue;
 567                 }
 568
 569                 nhunks = git_patch_num_hunks(patch);
 570                 for (j = 0; j < nhunks; j++) {
 571                         if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
 572                                 break;
 573
 574                         fprintf(fp, "<a href=\"#h%zu-%zu\" id=\"h%zu-%zu\" class=\"h\">", i, j, i, j);
 575                         xmlencode(fp, hunk->header, hunk->header_len);
 576                         fputs("</a>", fp);
 577
 578                         for (k = 0; ; k++) {
 579                                 if (git_patch_get_line_in_hunk(&line, patch, j, k))
 580                                         break;
 581                                 if (line->old_lineno == -1)
 582                                         fprintf(fp, "<a href=\"#h%zu-%zu-%zu\" id=\"h%zu-%zu-%zu\" class=\"i\">+",
 583                                                 i, j, k, i, j, k);
 584                                 else if (line->new_lineno == -1)
 585                                         fprintf(fp, "<a href=\"#h%zu-%zu-%zu\" id=\"h%zu-%zu-%zu\" class=\"d\">-",
 586                                                 i, j, k, i, j, k);
 587                                 else
 588                                         fputc(' ', fp);
 589                                 xmlencode(fp, line->content, line->content_len);
 590                                 if (line->old_lineno == -1 || line->new_lineno == -1)
 591                                         fputs("</a>", fp);
 592                         }
 593                 }
 594         }
 595 }
 596
 597 void
 598 writelogline(FILE *fp, struct commitinfo *ci)
 599 {
 600         fputs("<tr><td>", fp);
 601         if (ci->author)
 602                 printtimeshort(fp, &(ci->author->when));
 603         fputs("</td><td>", fp);
 604         if (ci->summary) {
 605                 fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 606                 xmlencode(fp, ci->summary, strlen(ci->summary));
 607                 fputs("</a>", fp);
 608         }
 609         fputs("</td><td>", fp);
 610         if (ci->author)
 611                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 612         fputs("</td><td class=\"num\" align=\"right\">", fp);
 613         fprintf(fp, "%zu", ci->filecount);
 614         fputs("</td><td class=\"num\" align=\"right\">", fp);
 615         fprintf(fp, "+%zu", ci->addcount);
 616         fputs("</td><td class=\"num\" align=\"right\">", fp);
 617         fprintf(fp, "-%zu", ci->delcount);
 618         fputs("</td></tr>\n", fp);
 619 }
 620
 621 int
 622 writelog(FILE *fp, const git_oid *oid)
 623 {
 624         struct commitinfo *ci;
 625         git_revwalk *w = NULL;
 626         git_oid id;
 627         char path[PATH_MAX], oidstr[GIT_OID_HEXSZ + 1];
 628         FILE *fpfile;
 629         int r;
 630
 631         git_revwalk_new(&w, repo);
 632         git_revwalk_push(w, oid);
 633         git_revwalk_simplify_first_parent(w);
 634
 635         while (!git_revwalk_next(&id, w)) {
 636                 relpath = "";
 637
 638                 if (cachefile && !memcmp(&id, &lastoid, sizeof(id)))
 639                         break;
 640
 641                 git_oid_tostr(oidstr, sizeof(oidstr), &id);
 642                 r = snprintf(path, sizeof(path), "commit/%s.html", oidstr);
 643                 if (r < 0 || (size_t)r >= sizeof(path))
 644                         errx(1, "path truncated: 'commit/%s.html'", oidstr);
 645                 r = access(path, F_OK);
 646
 647                 /* optimization: if there are no log lines to write and
 648                    the commit file already exists: skip the diffstat */
 649                 if (!nlogcommits && !r)
 650                         continue;
 651
 652                 if (!(ci = commitinfo_getbyoid(&id)))
 653                         break;
 654                 /* diffstat: for stagit HTML required for the log.html line */
 655                 if (commitinfo_getstats(ci) == -1)
 656                         goto err;
 657
 658                 if (nlogcommits < 0) {
 659                         writelogline(fp, ci);
 660                 } else if (nlogcommits > 0) {
 661                         writelogline(fp, ci);
 662                         nlogcommits--;
 663                         if (!nlogcommits && ci->parentoid[0])
 664                                 fputs("<tr><td></td><td colspan=\"5\">"
 665                                       "More commits remaining [...]</td>"
 666                                       "</tr>\n", fp);
 667                 }
 668
 669                 if (cachefile)
 670                         writelogline(wcachefp, ci);
 671
 672                 /* check if file exists if so skip it */
 673                 if (r) {
 674                         relpath = "../";
 675                         fpfile = efopen(path, "w");
 676                         writeheader(fpfile, ci->summary);
 677                         fputs("<pre>", fpfile);
 678                         printshowfile(fpfile, ci);
 679                         fputs("</pre>\n", fpfile);
 680                         writefooter(fpfile);
 681                         fclose(fpfile);
 682                 }
 683 err:
 684                 commitinfo_free(ci);
 685         }
 686         git_revwalk_free(w);
 687
 688         relpath = "";
 689
 690         return 0;
 691 }
 692
 693 void
 694 printcommitatom(FILE *fp, struct commitinfo *ci)
 695 {
 696         fputs("<entry>\n", fp);
 697
 698         fprintf(fp, "<id>%s</id>\n", ci->oid);
 699         if (ci->author) {
 700                 fputs("<published>", fp);
 701                 printtimez(fp, &(ci->author->when));
 702                 fputs("</published>\n", fp);
 703         }
 704         if (ci->committer) {
 705                 fputs("<updated>", fp);
 706                 printtimez(fp, &(ci->committer->when));
 707                 fputs("</updated>\n", fp);
 708         }
 709         if (ci->summary) {
 710                 fputs("<title type=\"text\">", fp);
 711                 xmlencode(fp, ci->summary, strlen(ci->summary));
 712                 fputs("</title>\n", fp);
 713         }
 714         fprintf(fp, "<link rel=\"alternate\" type=\"text/html\" href=\"commit/%s.html\" />\n",
 715                 ci->oid);
 716
 717         if (ci->author) {
 718                 fputs("<author>\n<name>", fp);
 719                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 720                 fputs("</name>\n<email>", fp);
 721                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 722                 fputs("</email>\n</author>\n", fp);
 723         }
 724
 725         fputs("<content type=\"text\">", fp);
 726         fprintf(fp, "commit %s\n", ci->oid);
 727         if (ci->parentoid[0])
 728                 fprintf(fp, "parent %s\n", ci->parentoid);
 729         if (ci->author) {
 730                 fputs("Author: ", fp);
 731                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 732                 fputs(" &lt;", fp);
 733                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 734                 fputs("&gt;\nDate:   ", fp);
 735                 printtime(fp, &(ci->author->when));
 736                 fputc('\n', fp);
 737         }
 738         if (ci->msg) {
 739                 fputc('\n', fp);
 740                 xmlencode(fp, ci->msg, strlen(ci->msg));
 741         }
 742         fputs("\n</content>\n</entry>\n", fp);
 743 }
 744
 745 int
 746 writeatom(FILE *fp)
 747 {
 748         struct commitinfo *ci;
 749         git_revwalk *w = NULL;
 750         git_oid id;
 751         size_t i, m = 100; /* last 'm' commits */
 752
 753         fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 754               "<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
 755         xmlencode(fp, strippedname, strlen(strippedname));
 756         fputs(", branch HEAD</title>\n<subtitle>", fp);
 757         xmlencode(fp, description, strlen(description));
 758         fputs("</subtitle>\n", fp);
 759
 760         git_revwalk_new(&w, repo);
 761         git_revwalk_push_head(w);
 762         git_revwalk_simplify_first_parent(w);
 763
 764         for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
 765                 if (!(ci = commitinfo_getbyoid(&id)))
 766                         break;
 767                 printcommitatom(fp, ci);
 768                 commitinfo_free(ci);
 769         }
 770         git_revwalk_free(w);
 771
 772         fputs("</feed>\n", fp);
 773
 774         return 0;
 775 }
 776
 777 int
 778 writeblob(git_object *obj, const char *fpath, const char *filename, git_off_t filesize)
 779 {
 780         char tmp[PATH_MAX] = "", *d;
 781         const char *p;
 782         int lc = 0;
 783         FILE *fp;
 784
 785         if (strlcpy(tmp, fpath, sizeof(tmp)) >= sizeof(tmp))
 786                 errx(1, "path truncated: '%s'", fpath);
 787         if (!(d = dirname(tmp)))
 788                 err(1, "dirname");
 789         if (mkdirp(d))
 790                 return -1;
 791
 792         for (p = fpath, tmp[0] = '\0'; *p; p++) {
 793                 if (*p == '/' && strlcat(tmp, "../", sizeof(tmp)) >= sizeof(tmp))
 794                         errx(1, "path truncated: '../%s'", tmp);
 795         }
 796         relpath = tmp;
 797
 798         fp = efopen(fpath, "w");
 799         writeheader(fp, filename);
 800         fputs("<p> ", fp);
 801         xmlencode(fp, filename, strlen(filename));
 802         fprintf(fp, " (%juB)", (uintmax_t)filesize);
 803         fputs("</p><hr/>", fp);
 804
 805         if (git_blob_is_binary((git_blob *)obj)) {
 806                 fputs("<p>Binary file.</p>\n", fp);
 807         } else {
 808                 lc = writeblobhtml(fpath, fp, (git_blob *)obj);
 809                 if (ferror(fp))
 810                         err(1, "fwrite");
 811         }
 812         writefooter(fp);
 813         fclose(fp);
 814
 815         relpath = "";
 816
 817         return lc;
 818 }
 819
 820 const char *
 821 filemode(git_filemode_t m)
 822 {
 823         static char mode[11];
 824
 825         memset(mode, '-', sizeof(mode) - 1);
 826         mode[10] = '\0';
 827
 828         if (S_ISREG(m))
 829                 mode[0] = '-';
 830         else if (S_ISBLK(m))
 831                 mode[0] = 'b';
 832         else if (S_ISCHR(m))
 833                 mode[0] = 'c';
 834         else if (S_ISDIR(m))
 835                 mode[0] = 'd';
 836         else if (S_ISFIFO(m))
 837                 mode[0] = 'p';
 838         else if (S_ISLNK(m))
 839                 mode[0] = 'l';
 840         else if (S_ISSOCK(m))
 841                 mode[0] = 's';
 842         else
 843                 mode[0] = '?';
 844
 845         if (m & S_IRUSR) mode[1] = 'r';
 846         if (m & S_IWUSR) mode[2] = 'w';
 847         if (m & S_IXUSR) mode[3] = 'x';
 848         if (m & S_IRGRP) mode[4] = 'r';
 849         if (m & S_IWGRP) mode[5] = 'w';
 850         if (m & S_IXGRP) mode[6] = 'x';
 851         if (m & S_IROTH) mode[7] = 'r';
 852         if (m & S_IWOTH) mode[8] = 'w';
 853         if (m & S_IXOTH) mode[9] = 'x';
 854
 855         if (m & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
 856         if (m & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
 857         if (m & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T';
 858
 859         return mode;
 860 }
 861
 862 int
 863 writefilestree(FILE *fp, git_tree *tree, const char *path)
 864 {
 865         const git_tree_entry *entry = NULL;
 866         git_submodule *module = NULL;
 867         git_object *obj = NULL;
 868         git_off_t filesize;
 869         const char *entryname;
 870         char filepath[PATH_MAX], entrypath[PATH_MAX];
 871         size_t count, i;
 872         int lc, r, ret;
 873
 874         count = git_tree_entrycount(tree);
 875         for (i = 0; i < count; i++) {
 876                 if (!(entry = git_tree_entry_byindex(tree, i)) ||
 877                     !(entryname = git_tree_entry_name(entry)))
 878                         return -1;
 879                 joinpath(entrypath, sizeof(entrypath), path, entryname);
 880
 881                 r = snprintf(filepath, sizeof(filepath), "file/%s.html",
 882                          entrypath);
 883                 if (r < 0 || (size_t)r >= sizeof(filepath))
 884                         errx(1, "path truncated: 'file/%s.html'", entrypath);
 885
 886                 if (!git_tree_entry_to_object(&obj, repo, entry)) {
 887                         switch (git_object_type(obj)) {
 888                         case GIT_OBJ_BLOB:
 889                                 break;
 890                         case GIT_OBJ_TREE:
 891                                 /* NOTE: recurses */
 892                                 ret = writefilestree(fp, (git_tree *)obj,
 893                                                      entrypath);
 894                                 git_object_free(obj);
 895                                 if (ret)
 896                                         return ret;
 897                                 continue;
 898                         default:
 899                                 git_object_free(obj);
 900                                 continue;
 901                         }
 902
 903                         filesize = git_blob_rawsize((git_blob *)obj);
 904                         lc = writeblob(obj, filepath, entryname, filesize);
 905
 906                         fputs("<tr><td>", fp);
 907                         fputs(filemode(git_tree_entry_filemode(entry)), fp);
 908                         fprintf(fp, "</td><td><a href=\"%s", relpath);
 909                         xmlencode(fp, filepath, strlen(filepath));
 910                         fputs("\">", fp);
 911                         xmlencode(fp, entrypath, strlen(entrypath));
 912                         fputs("</a></td><td class=\"num\" align=\"right\">", fp);
 913                         if (lc > 0)
 914                                 fprintf(fp, "%dL", lc);
 915                         else
 916                                 fprintf(fp, "%juB", (uintmax_t)filesize);
 917                         fputs("</td></tr>\n", fp);
 918                         git_object_free(obj);
 919                 } else if (!git_submodule_lookup(&module, repo, entryname)) {
 920                         fprintf(fp, "<tr><td>m---------</td><td><a href=\"%sfile/.gitmodules.html\">",
 921                                 relpath);
 922                         xmlencode(fp, entrypath, strlen(entrypath));
 923                         git_submodule_free(module);
 924                         fputs("</a></td><td class=\"num\" align=\"right\"></td></tr>\n", fp);
 925                 }
 926         }
 927
 928         return 0;
 929 }
 930
 931 int
 932 writefiles(FILE *fp, const git_oid *id)
 933 {
 934         git_tree *tree = NULL;
 935         git_commit *commit = NULL;
 936         int ret = -1;
 937
 938         fputs("<table id=\"files\"><thead>\n<tr>"
 939               "<td><b>Mode</b></td><td><b>Name</b></td>"
 940               "<td class=\"num\" align=\"right\"><b>Size</b></td>"
 941               "</tr>\n</thead><tbody>\n", fp);
 942
 943         if (!git_commit_lookup(&commit, repo, id) &&
 944             !git_commit_tree(&tree, commit))
 945                 ret = writefilestree(fp, tree, "");
 946
 947         fputs("</tbody></table>", fp);
 948
 949         git_commit_free(commit);
 950         git_tree_free(tree);
 951
 952         return ret;
 953 }
 954
 955 int
 956 refs_cmp(const void *v1, const void *v2)
 957 {
 958         git_reference *r1 = (*(git_reference **)v1);
 959         git_reference *r2 = (*(git_reference **)v2);
 960         int r;
 961
 962         if ((r = git_reference_is_branch(r1) - git_reference_is_branch(r2)))
 963                 return r;
 964
 965         return strcmp(git_reference_shorthand(r1),
 966                       git_reference_shorthand(r2));
 967 }
 968
 969 int
 970 writerefs(FILE *fp)
 971 {
 972         struct commitinfo *ci;
 973         const git_oid *id = NULL;
 974         git_object *obj = NULL;
 975         git_reference *dref = NULL, *r, *ref = NULL;
 976         git_reference_iterator *it = NULL;
 977         git_reference **refs = NULL;
 978         size_t count, i, j, refcount;
 979         const char *titles[] = { "Branches", "Tags" };
 980         const char *ids[] = { "branches", "tags" };
 981         const char *name;
 982
 983         if (git_reference_iterator_new(&it, repo))
 984                 return -1;
 985
 986         for (refcount = 0; !git_reference_next(&ref, it); refcount++) {
 987                 if (!(refs = reallocarray(refs, refcount + 1, sizeof(git_reference *))))
 988                         err(1, "realloc");
 989                 refs[refcount] = ref;
 990         }
 991         git_reference_iterator_free(it);
 992
 993         /* sort by type then shorthand name */
 994         qsort(refs, refcount, sizeof(git_reference *), refs_cmp);
 995
 996         for (j = 0; j < 2; j++) {
 997                 for (i = 0, count = 0; i < refcount; i++) {
 998                         if (!(git_reference_is_branch(refs[i]) && j == 0) &&
 999                             !(git_reference_is_tag(refs[i]) && j == 1))
1000                                 continue;
1001
1002                         switch (git_reference_type(refs[i])) {
1003                         case GIT_REF_SYMBOLIC:
1004                                 if (git_reference_resolve(&dref, refs[i]))
1005                                         goto err;
1006                                 r = dref;
1007                                 break;
1008                         case GIT_REF_OID:
1009                                 r = refs[i];
1010                                 break;
1011                         default:
1012                                 continue;
1013                         }
1014                         if (!git_reference_target(r) ||
1015                             git_reference_peel(&obj, r, GIT_OBJ_ANY))
1016                                 goto err;
1017                         if (!(id = git_object_id(obj)))
1018                                 goto err;
1019                         if (!(ci = commitinfo_getbyoid(id)))
1020                                 break;
1021
1022                         /* print header if it has an entry (first). */
1023                         if (++count == 1) {
1024                                 fprintf(fp, "<h2>%s</h2><table id=\"%s\">"
1025                                         "<thead>\n<tr><td><b>Name</b></td>"
1026                                         "<td><b>Last commit date</b></td>"
1027                                         "<td><b>Author</b></td>\n</tr>\n"
1028                                         "</thead><tbody>\n",
1029                                          titles[j], ids[j]);
1030                         }
1031
1032                         relpath = "";
1033                         name = git_reference_shorthand(r);
1034
1035                         fputs("<tr><td>", fp);
1036                         xmlencode(fp, name, strlen(name));
1037                         fputs("</td><td>", fp);
1038                         if (ci->author)
1039                                 printtimeshort(fp, &(ci->author->when));
1040                         fputs("</td><td>", fp);
1041                         if (ci->author)
1042                                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
1043                         fputs("</td></tr>\n", fp);
1044
1045                         relpath = "../";
1046
1047                         commitinfo_free(ci);
1048                         git_object_free(obj);
1049                         obj = NULL;
1050                         git_reference_free(dref);
1051                         dref = NULL;
1052                 }
1053                 /* table footer */
1054                 if (count)
1055                         fputs("</tbody></table><br/>", fp);
1056         }
1057
1058 err:
1059         git_object_free(obj);
1060         git_reference_free(dref);
1061
1062         for (i = 0; i < refcount; i++)
1063                 git_reference_free(refs[i]);
1064         free(refs);
1065
1066         return 0;
1067 }
1068
1069 void
1070 usage(char *argv0)
1071 {
1072         fprintf(stderr, "%s [-c cachefile | -l commits] repodir\n", argv0);
1073         exit(1);
1074 }
1075
1076 int
1077 main(int argc, char *argv[])
1078 {
1079         git_object *obj = NULL;
1080         const git_oid *head = NULL;
1081         mode_t mask;
1082         FILE *fp, *fpread;
1083         char path[PATH_MAX], repodirabs[PATH_MAX + 1], *p;
1084         char tmppath[64] = "cache.XXXXXXXXXXXX", buf[BUFSIZ];
1085         size_t n;
1086         int i, fd;
1087
1088         for (i = 1; i < argc; i++) {
1089                 if (argv[i][0] != '-') {
1090                         if (repodir)
1091                                 usage(argv[0]);
1092                         repodir = argv[i];
1093                 } else if (argv[i][1] == 'c') {
1094                         if (nlogcommits > 0 || i + 1 >= argc)
1095                                 usage(argv[0]);
1096                         cachefile = argv[++i];
1097                 } else if (argv[i][1] == 'l') {
1098                         if (cachefile || i + 1 >= argc)
1099                                 usage(argv[0]);
1100                         errno = 0;
1101                         nlogcommits = strtoll(argv[++i], &p, 10);
1102                         if (argv[i][0] == '\0' || *p != '\0' ||
1103                             nlogcommits <= 0 || errno)
1104                                 usage(argv[0]);
1105                 }
1106         }
1107         if (!repodir)
1108                 usage(argv[0]);
1109
1110         if (!realpath(repodir, repodirabs))
1111                 err(1, "realpath");
1112
1113         git_libgit2_init();
1114
1115 #ifdef __OpenBSD__
1116         if (unveil(repodir, "r") == -1)
1117                 err(1, "unveil: %s", repodir);
1118         if (unveil(".", "rwc") == -1)
1119                 err(1, "unveil: .");
1120         if (cachefile && unveil(cachefile, "rwc") == -1)
1121                 err(1, "unveil: %s", cachefile);
1122
1123         if (cachefile) {
1124                 if (pledge("stdio rpath wpath cpath fattr", NULL) == -1)
1125                         err(1, "pledge");
1126         } else {
1127                 if (pledge("stdio rpath wpath cpath", NULL) == -1)
1128                         err(1, "pledge");
1129         }
1130 #endif
1131
1132         if (git_repository_open_ext(&repo, repodir,
1133                 GIT_REPOSITORY_OPEN_NO_SEARCH, NULL) < 0) {
1134                 fprintf(stderr, "%s: cannot open repository\n", argv[0]);
1135                 return 1;
1136         }
1137
1138         /* find HEAD */
1139         if (!git_revparse_single(&obj, repo, "HEAD"))
1140                 head = git_object_id(obj);
1141         git_object_free(obj);
1142
1143         /* use directory name as name */
1144         if ((name = strrchr(repodirabs, '/')))
1145                 name++;
1146         else
1147                 name = "";
1148
1149         /* strip .git suffix */
1150         if (!(strippedname = strdup(name)))
1151                 err(1, "strdup");
1152         if ((p = strrchr(strippedname, '.')))
1153                 if (!strcmp(p, ".git"))
1154                         *p = '\0';
1155
1156         /* read description or .git/description */
1157         joinpath(path, sizeof(path), repodir, "description");
1158         if (!(fpread = fopen(path, "r"))) {
1159                 joinpath(path, sizeof(path), repodir, ".git/description");
1160                 fpread = fopen(path, "r");
1161         }
1162         if (fpread) {
1163                 if (!fgets(description, sizeof(description), fpread))
1164                         description[0] = '\0';
1165                 fclose(fpread);
1166         }
1167
1168         /* read url or .git/url */
1169         joinpath(path, sizeof(path), repodir, "url");
1170         if (!(fpread = fopen(path, "r"))) {
1171                 joinpath(path, sizeof(path), repodir, ".git/url");
1172                 fpread = fopen(path, "r");
1173         }
1174         if (fpread) {
1175                 if (!fgets(cloneurl, sizeof(cloneurl), fpread))
1176                         cloneurl[0] = '\0';
1177                 cloneurl[strcspn(cloneurl, "\n")] = '\0';
1178                 fclose(fpread);
1179         }
1180
1181         /* check LICENSE */
1182         for (i = 0; i < sizeof(licensefiles) / sizeof(*licensefiles) && !license; i++) {
1183                 if (!git_revparse_single(&obj, repo, licensefiles[i]) &&
1184                     git_object_type(obj) == GIT_OBJ_BLOB)
1185                         license = licensefiles[i] + strlen("HEAD:");
1186                 git_object_free(obj);
1187         }
1188
1189         /* check README */
1190         for (i = 0; i < sizeof(readmefiles) / sizeof(*readmefiles) && !readme; i++) {
1191                 if (!git_revparse_single(&obj, repo, readmefiles[i]) &&
1192                     git_object_type(obj) == GIT_OBJ_BLOB)
1193                         readme = readmefiles[i] + strlen("HEAD:");
1194                 git_object_free(obj);
1195         }
1196
1197         if (!git_revparse_single(&obj, repo, "HEAD:.gitmodules") &&
1198             git_object_type(obj) == GIT_OBJ_BLOB)
1199                 submodules = ".gitmodules";
1200         git_object_free(obj);
1201
1202         /* log for HEAD */
1203         fp = efopen("log.html", "w");
1204         relpath = "";
1205         mkdir("commit", S_IRWXU | S_IRWXG | S_IRWXO);
1206         writeheader(fp, "Log");
1207         fputs("<table id=\"log\"><thead>\n<tr><td><b>Date</b></td>"
1208               "<td><b>Commit</b></td>"
1209               "<td><b>Author</b></td><td class=\"num\" align=\"right\"><b>Files</b></td>"
1210               "<td class=\"num\" align=\"right\"><b>+</b></td>"
1211               "<td class=\"num\" align=\"right\"><b>-</b></td></tr>\n</thead><tbody>\n", fp);
1212
1213         if (cachefile && head) {
1214                 /* read from cache file (does not need to exist) */
1215                 if ((rcachefp = fopen(cachefile, "r"))) {
1216                         if (!fgets(lastoidstr, sizeof(lastoidstr), rcachefp))
1217                                 errx(1, "%s: no object id", cachefile);
1218                         if (git_oid_fromstr(&lastoid, lastoidstr))
1219                                 errx(1, "%s: invalid object id", cachefile);
1220                 }
1221
1222                 /* write log to (temporary) cache */
1223                 if ((fd = mkstemp(tmppath)) == -1)
1224                         err(1, "mkstemp");
1225                 if (!(wcachefp = fdopen(fd, "w")))
1226                         err(1, "fdopen: '%s'", tmppath);
1227                 /* write last commit id (HEAD) */
1228                 git_oid_tostr(buf, sizeof(buf), head);
1229                 fprintf(wcachefp, "%s\n", buf);
1230
1231                 writelog(fp, head);
1232
1233                 if (rcachefp) {
1234                         /* append previous log to log.html and the new cache */
1235                         while (!feof(rcachefp)) {
1236                                 n = fread(buf, 1, sizeof(buf), rcachefp);
1237                                 if (ferror(rcachefp))
1238                                         err(1, "fread");
1239                                 if (fwrite(buf, 1, n, fp) != n ||
1240                                     fwrite(buf, 1, n, wcachefp) != n)
1241                                         err(1, "fwrite");
1242                         }
1243                         fclose(rcachefp);
1244                 }
1245                 fclose(wcachefp);
1246         } else {
1247                 if (head)
1248                         writelog(fp, head);
1249         }
1250
1251         fputs("</tbody></table>", fp);
1252         writefooter(fp);
1253         fclose(fp);
1254
1255         /* files for HEAD */
1256         fp = efopen("files.html", "w");
1257         writeheader(fp, "Files");
1258         if (head)
1259                 writefiles(fp, head);
1260         writefooter(fp);
1261         fclose(fp);
1262
1263         /* summary page with branches and tags */
1264         fp = efopen("refs.html", "w");
1265         writeheader(fp, "Refs");
1266         writerefs(fp);
1267         writefooter(fp);
1268         fclose(fp);
1269
1270         /* Atom feed */
1271         fp = efopen("atom.xml", "w");
1272         writeatom(fp);
1273         fclose(fp);
1274
1275         /* rename new cache file on success */
1276         if (cachefile && head) {
1277                 if (rename(tmppath, cachefile))
1278                         err(1, "rename: '%s' to '%s'", tmppath, cachefile);
1279                 umask((mask = umask(0)));
1280                 if (chmod(cachefile,
1281                     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) & ~mask))
1282                         err(1, "chmod: '%s'", cachefile);
1283         }
1284
1285         /* cleanup */
1286         git_repository_free(repo);
1287         git_libgit2_shutdown();
1288
1289         return 0;
1290 }