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;
  46 static char *stripped_name;
  47 static char description[255];
  48 static char cloneurl[1024];
  49 static int hasreadme, haslicense;
  50
  51 void
  52 commitinfo_free(struct commitinfo *ci)
  53 {
  54         if (!ci)
  55                 return;
  56
  57         git_diff_stats_free(ci->stats);
  58         git_diff_free(ci->diff);
  59         git_tree_free(ci->commit_tree);
  60         git_tree_free(ci->parent_tree);
  61         git_commit_free(ci->commit);
  62 }
  63
  64 struct commitinfo *
  65 commitinfo_getbyoid(const git_oid *id)
  66 {
  67         struct commitinfo *ci;
  68         git_diff_options opts;
  69         int error;
  70
  71         if (!(ci = calloc(1, sizeof(struct commitinfo))))
  72                 err(1, "calloc");
  73
  74         ci->id = id;
  75         if (git_commit_lookup(&(ci->commit), repo, id))
  76                 goto err;
  77
  78         git_oid_tostr(ci->oid, sizeof(ci->oid), git_commit_id(ci->commit));
  79         git_oid_tostr(ci->parentoid, sizeof(ci->parentoid), git_commit_parent_id(ci->commit, 0));
  80
  81         ci->author = git_commit_author(ci->commit);
  82         ci->summary = git_commit_summary(ci->commit);
  83         ci->msg = git_commit_message(ci->commit);
  84
  85         if ((error = git_commit_tree(&(ci->commit_tree), ci->commit)))
  86                 goto err;
  87         if (!(error = git_commit_parent(&(ci->parent), ci->commit, 0))) {
  88                 if ((error = git_commit_tree(&(ci->parent_tree), ci->parent)))
  89                         goto err;
  90         } else {
  91                 ci->parent = NULL;
  92                 ci->parent_tree = NULL;
  93         }
  94
  95         git_diff_init_options(&opts, GIT_DIFF_OPTIONS_VERSION);
  96         opts.flags |= GIT_DIFF_DISABLE_PATHSPEC_MATCH;
  97         if ((error = git_diff_tree_to_tree(&(ci->diff), repo, ci->parent_tree, ci->commit_tree, &opts)))
  98                 goto err;
  99         if (git_diff_get_stats(&(ci->stats), ci->diff))
 100                 goto err;
 101
 102         ci->addcount = git_diff_stats_insertions(ci->stats);
 103         ci->delcount = git_diff_stats_deletions(ci->stats);
 104         ci->filecount = git_diff_stats_files_changed(ci->stats);
 105
 106         return ci;
 107
 108 err:
 109         commitinfo_free(ci);
 110         free(ci);
 111
 112         return NULL;
 113 }
 114
 115 FILE *
 116 efopen(const char *name, const char *flags)
 117 {
 118         FILE *fp;
 119
 120         if (!(fp = fopen(name, flags)))
 121                 err(1, "fopen");
 122
 123         return fp;
 124 }
 125
 126 /* Escape characters below as HTML 2.0 / XML 1.0. */
 127 void
 128 xmlencode(FILE *fp, const char *s, size_t len)
 129 {
 130         size_t i;
 131
 132         for (i = 0; *s && i < len; s++, i++) {
 133                 switch(*s) {
 134                 case '<':  fputs("&lt;",   fp); break;
 135                 case '>':  fputs("&gt;",   fp); break;
 136                 case '\'': fputs("&apos;", fp); break;
 137                 case '&':  fputs("&amp;",  fp); break;
 138                 case '"':  fputs("&quot;", fp); break;
 139                 default:   fputc(*s, fp);
 140                 }
 141         }
 142 }
 143
 144 /* Some implementations of dirname(3) return a pointer to a static
 145  * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
 146  * This is a wrapper function that is compatible with both versions.
 147  * The program will error out if dirname(3) failed, this can only happen
 148  * with the OpenBSD version. */
 149 char *
 150 xdirname(const char *path)
 151 {
 152         char *p, *b;
 153
 154         if (!(p = strdup(path)))
 155                 err(1, "strdup");
 156         if (!(b = dirname(p)))
 157                 err(1, "dirname");
 158         if (!(b = strdup(b)))
 159                 err(1, "strdup");
 160         free(p);
 161
 162         return b;
 163 }
 164
 165 /* Some implementations of basename(3) return a pointer to a static
 166  * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
 167  * This is a wrapper function that is compatible with both versions.
 168  * The program will error out if basename(3) failed, this can only happen
 169  * with the OpenBSD version. */
 170 char *
 171 xbasename(const char *path)
 172 {
 173         char *p, *b;
 174
 175         if (!(p = strdup(path)))
 176                 err(1, "strdup");
 177         if (!(b = basename(p)))
 178                 err(1, "basename");
 179         if (!(b = strdup(b)))
 180                 err(1, "strdup");
 181         free(p);
 182
 183         return b;
 184 }
 185
 186 int
 187 mkdirp(const char *path)
 188 {
 189         char tmp[PATH_MAX], *p;
 190
 191         strlcpy(tmp, path, sizeof(tmp));
 192         for (p = tmp + (tmp[0] == '/'); *p; p++) {
 193                 if (*p != '/')
 194                         continue;
 195                 *p = '\0';
 196                 if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
 197                         return -1;
 198                 *p = '/';
 199         }
 200         if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
 201                 return -1;
 202         return 0;
 203 }
 204
 205 void
 206 printtimeformat(FILE *fp, const git_time *intime, const char *fmt)
 207 {
 208         struct tm *intm;
 209         time_t t;
 210         char out[32];
 211
 212         t = (time_t) intime->time + (intime->offset * 60);
 213         intm = gmtime(&t);
 214         strftime(out, sizeof(out), fmt, intm);
 215         fputs(out, fp);
 216 }
 217
 218 void
 219 printtimez(FILE *fp, const git_time *intime)
 220 {
 221         printtimeformat(fp, intime, "%Y-%m-%dT%H:%M:%SZ");
 222 }
 223
 224 void
 225 printtime(FILE *fp, const git_time *intime)
 226 {
 227         printtimeformat(fp, intime, "%a %b %e %T %Y");
 228 }
 229
 230 void
 231 printtimeshort(FILE *fp, const git_time *intime)
 232 {
 233         printtimeformat(fp, intime, "%Y-%m-%d %H:%M");
 234 }
 235
 236 int
 237 writeheader(FILE *fp)
 238 {
 239         fputs("<!DOCTYPE HTML>"
 240                 "<html dir=\"ltr\" lang=\"en\">\n<head>\n"
 241                 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
 242                 "<meta http-equiv=\"Content-Language\" content=\"en\" />\n<title>", fp);
 243         xmlencode(fp, stripped_name, strlen(stripped_name));
 244         if (description[0])
 245                 fputs(" - ", fp);
 246         xmlencode(fp, description, strlen(description));
 247         fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
 248         fprintf(fp, "<link rel=\"alternate\" type=\"application/atom+xml\" title=\"%s Atom Feed\" href=\"%satom.xml\" />\n",
 249                 name, relpath);
 250         fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
 251         fputs("</head>\n<body>\n<table><tr><td>", fp);
 252         fprintf(fp, "<a href=\"../%s\"><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /></a>",
 253                 relpath, relpath);
 254         fputs("</td><td><h1>", fp);
 255         xmlencode(fp, stripped_name, strlen(stripped_name));
 256         fputs("</h1><span class=\"desc\">", fp);
 257         xmlencode(fp, description, strlen(description));
 258         fputs("</span></td></tr>", fp);
 259         if (cloneurl[0]) {
 260                 fputs("<tr class=\"url\"><td></td><td>git clone <a href=\"", fp);
 261                 xmlencode(fp, cloneurl, strlen(cloneurl));
 262                 fputs("\">", fp);
 263                 xmlencode(fp, cloneurl, strlen(cloneurl));
 264                 fputs("</a></td></tr>", fp);
 265         }
 266         fputs("<tr><td></td><td>\n", fp);
 267         fprintf(fp, "<a href=\"%slog.html\">Log</a> | ", relpath);
 268         fprintf(fp, "<a href=\"%sfiles.html\">Files</a> | ", relpath);
 269         fprintf(fp, "<a href=\"%srefs.html\">Refs</a>", relpath);
 270         if (hasreadme)
 271                 fprintf(fp, " | <a href=\"%sfile/README.html\">README</a>", relpath);
 272         if (haslicense)
 273                 fprintf(fp, " | <a href=\"%sfile/LICENSE.html\">LICENSE</a>", relpath);
 274         fputs("</td></tr></table>\n<hr/>\n<div id=\"content\">\n", fp);
 275
 276         return 0;
 277 }
 278
 279 int
 280 writefooter(FILE *fp)
 281 {
 282         return !fputs("</div>\n</body>\n</html>\n", fp);
 283 }
 284
 285 int
 286 writeblobhtml(FILE *fp, const git_blob *blob)
 287 {
 288         off_t i;
 289         size_t n = 0;
 290         char *nfmt = "<a href=\"#l%d\" id=\"l%d\">%d</a>\n";
 291         const char *s = git_blob_rawcontent(blob);
 292         git_off_t len = git_blob_rawsize(blob);
 293
 294         fputs("<table id=\"blob\"><tr><td class=\"num\"><pre>\n", fp);
 295
 296         if (len) {
 297                 n++;
 298                 fprintf(fp, nfmt, n, n, n);
 299                 for (i = 0; i < len - 1; i++) {
 300                         if (s[i] == '\n') {
 301                                 n++;
 302                                 fprintf(fp, nfmt, n, n, n);
 303                         }
 304                 }
 305         }
 306
 307         fputs("</pre></td><td><pre>\n", fp);
 308         xmlencode(fp, s, (size_t)len);
 309         fputs("</pre></td></tr></table>\n", fp);
 310
 311         return n;
 312 }
 313
 314 void
 315 printcommit(FILE *fp, struct commitinfo *ci)
 316 {
 317         fprintf(fp, "<b>commit</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 318                 relpath, ci->oid, ci->oid);
 319
 320         if (ci->parentoid[0])
 321                 fprintf(fp, "<b>parent</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 322                         relpath, ci->parentoid, ci->parentoid);
 323
 324         if (ci->author) {
 325                 fputs("<b>Author:</b> ", fp);
 326                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 327                 fputs(" &lt;<a href=\"mailto:", fp);
 328                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 329                 fputs("\">", fp);
 330                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 331                 fputs("</a>&gt;\n<b>Date:</b>   ", fp);
 332                 printtime(fp, &(ci->author->when));
 333                 fputc('\n', fp);
 334         }
 335         if (ci->msg) {
 336                 fputc('\n', fp);
 337                 xmlencode(fp, ci->msg, strlen(ci->msg));
 338                 fputc('\n', fp);
 339         }
 340 }
 341
 342 void
 343 printshowfile(struct commitinfo *ci)
 344 {
 345         const git_diff_delta *delta;
 346         const git_diff_hunk *hunk;
 347         const git_diff_line *line;
 348         git_patch *patch;
 349         git_buf statsbuf;
 350         size_t ndeltas, nhunks, nhunklines;
 351         FILE *fp;
 352         size_t i, j, k;
 353         char path[PATH_MAX];
 354
 355         snprintf(path, sizeof(path), "commit/%s.html", ci->oid);
 356         /* check if file exists if so skip it */
 357         if (!access(path, F_OK))
 358                 return;
 359
 360         fp = efopen(path, "w");
 361         writeheader(fp);
 362         fputs("<pre>", fp);
 363         printcommit(fp, ci);
 364
 365         memset(&statsbuf, 0, sizeof(statsbuf));
 366
 367         /* diff stat */
 368         if (ci->stats &&
 369             !git_diff_stats_to_buf(&statsbuf, ci->stats,
 370                                    GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT, 80)) {
 371                 if (statsbuf.ptr && statsbuf.ptr[0]) {
 372                         fputs("<b>Diffstat:</b>\n", fp);
 373                         xmlencode(fp, statsbuf.ptr, strlen(statsbuf.ptr));
 374                 }
 375         }
 376
 377         fputs("<hr/>", fp);
 378
 379         ndeltas = git_diff_num_deltas(ci->diff);
 380         for (i = 0; i < ndeltas; i++) {
 381                 if (git_patch_from_diff(&patch, ci->diff, i)) {
 382                         git_patch_free(patch);
 383                         break;
 384                 }
 385
 386                 delta = git_patch_get_delta(patch);
 387                 fprintf(fp, "<b>diff --git a/<a href=\"%sfile/%s.html\">%s</a> b/<a href=\"%sfile/%s.html\">%s</a></b>\n",
 388                         relpath, delta->old_file.path, delta->old_file.path,
 389                         relpath, delta->new_file.path, delta->new_file.path);
 390
 391                 /* check binary data */
 392                 if (delta->flags & GIT_DIFF_FLAG_BINARY) {
 393                         fputs("Binary files differ\n", fp);
 394                         git_patch_free(patch);
 395                         continue;
 396                 }
 397
 398                 nhunks = git_patch_num_hunks(patch);
 399                 for (j = 0; j < nhunks; j++) {
 400                         if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
 401                                 break;
 402
 403                         fprintf(fp, "<a href=\"#h%zu\" id=\"h%zu\" class=\"h\">", j, j);
 404                         xmlencode(fp, hunk->header, hunk->header_len);
 405                         fputs("</a>", fp);
 406
 407                         for (k = 0; ; k++) {
 408                                 if (git_patch_get_line_in_hunk(&line, patch, j, k))
 409                                         break;
 410                                 if (line->old_lineno == -1)
 411                                         fprintf(fp, "<a href=\"#h%zu-%zu\" id=\"h%zu-%zu\" class=\"i\">+",
 412                                                 j, k, j, k);
 413                                 else if (line->new_lineno == -1)
 414                                         fprintf(fp, "<a href=\"#h%zu-%zu\" id=\"h%zu-%zu\" class=\"d\">-",
 415                                                 j, k, j, k);
 416                                 else
 417                                         fputc(' ', fp);
 418                                 xmlencode(fp, line->content, line->content_len);
 419                                 if (line->old_lineno == -1 || line->new_lineno == -1)
 420                                         fputs("</a>", fp);
 421                         }
 422                 }
 423                 git_patch_free(patch);
 424         }
 425         git_buf_free(&statsbuf);
 426
 427         fputs("</pre>\n", fp);
 428         writefooter(fp);
 429         fclose(fp);
 430         return;
 431 }
 432
 433 int
 434 writelog(FILE *fp, const git_oid *oid)
 435 {
 436         struct commitinfo *ci;
 437         git_revwalk *w = NULL;
 438         git_oid id;
 439         size_t len;
 440
 441         git_revwalk_new(&w, repo);
 442         git_revwalk_push(w, oid);
 443         git_revwalk_sorting(w, GIT_SORT_TIME);
 444         git_revwalk_simplify_first_parent(w);
 445
 446         fputs("<table id=\"log\"><thead>\n<tr><td>Date</td><td>Commit message</td>"
 447                   "<td>Author</td><td>Files</td><td class=\"num\">+</td>"
 448                   "<td class=\"num\">-</td></tr>\n</thead><tbody>\n", fp);
 449
 450         while (!git_revwalk_next(&id, w)) {
 451                 relpath = "";
 452
 453                 if (!(ci = commitinfo_getbyoid(&id)))
 454                         break;
 455
 456                 fputs("<tr><td>", fp);
 457                 if (ci->author)
 458                         printtimeshort(fp, &(ci->author->when));
 459                 fputs("</td><td>", fp);
 460                 if (ci->summary) {
 461                         fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 462                         if ((len = strlen(ci->summary)) > summarylen) {
 463                                 xmlencode(fp, ci->summary, summarylen - 1);
 464                                 fputs("…", fp);
 465                         } else {
 466                                 xmlencode(fp, ci->summary, len);
 467                         }
 468                         fputs("</a>", fp);
 469                 }
 470                 fputs("</td><td>", fp);
 471                 if (ci->author)
 472                         xmlencode(fp, ci->author->name, strlen(ci->author->name));
 473                 fputs("</td><td class=\"num\">", fp);
 474                 fprintf(fp, "%zu", ci->filecount);
 475                 fputs("</td><td class=\"num\">", fp);
 476                 fprintf(fp, "+%zu", ci->addcount);
 477                 fputs("</td><td class=\"num\">", fp);
 478                 fprintf(fp, "-%zu", ci->delcount);
 479                 fputs("</td></tr>\n", fp);
 480
 481                 relpath = "../";
 482                 printshowfile(ci);
 483
 484                 commitinfo_free(ci);
 485         }
 486         fputs("</tbody></table>", fp);
 487
 488         git_revwalk_free(w);
 489
 490         relpath = "";
 491
 492         return 0;
 493 }
 494
 495 void
 496 printcommitatom(FILE *fp, struct commitinfo *ci)
 497 {
 498         fputs("<entry>\n", fp);
 499
 500         fprintf(fp, "<id>%s</id>\n", ci->oid);
 501         if (ci->author) {
 502                 fputs("<updated>", fp);
 503                 printtimez(fp, &(ci->author->when));
 504                 fputs("</updated>\n", fp);
 505         }
 506         if (ci->summary) {
 507                 fputs("<title type=\"text\">", fp);
 508                 xmlencode(fp, ci->summary, strlen(ci->summary));
 509                 fputs("</title>\n", fp);
 510         }
 511
 512         fputs("<content type=\"text\">", fp);
 513         fprintf(fp, "commit %s\n", ci->oid);
 514         if (ci->parentoid[0])
 515                 fprintf(fp, "parent %s\n", ci->parentoid);
 516         if (ci->author) {
 517                 fputs("Author: ", fp);
 518                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 519                 fputs(" &lt;", fp);
 520                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 521                 fputs("&gt;\nDate:   ", fp);
 522                 printtime(fp, &(ci->author->when));
 523                 fputc('\n', fp);
 524         }
 525         if (ci->msg) {
 526                 fputc('\n', fp);
 527                 xmlencode(fp, ci->msg, strlen(ci->msg));
 528         }
 529         fputs("\n</content>\n", fp);
 530         if (ci->author) {
 531                 fputs("<author><name>", fp);
 532                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 533                 fputs("</name>\n<email>", fp);
 534                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 535                 fputs("</email>\n</author>\n", fp);
 536         }
 537         fputs("</entry>\n", fp);
 538 }
 539
 540 int
 541 writeatom(FILE *fp)
 542 {
 543         struct commitinfo *ci;
 544         git_revwalk *w = NULL;
 545         git_oid id;
 546         size_t i, m = 100; /* max */
 547
 548         fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 549               "<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
 550         xmlencode(fp, stripped_name, strlen(stripped_name));
 551         fputs(", branch HEAD</title>\n<subtitle>", fp);
 552         xmlencode(fp, description, strlen(description));
 553         fputs("</subtitle>\n", fp);
 554
 555         git_revwalk_new(&w, repo);
 556         git_revwalk_push_head(w);
 557         git_revwalk_sorting(w, GIT_SORT_TIME);
 558         git_revwalk_simplify_first_parent(w);
 559
 560         for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
 561                 if (!(ci = commitinfo_getbyoid(&id)))
 562                         break;
 563                 printcommitatom(fp, ci);
 564                 commitinfo_free(ci);
 565         }
 566         git_revwalk_free(w);
 567
 568         fputs("</feed>", fp);
 569
 570         return 0;
 571 }
 572
 573 int
 574 writeblob(git_object *obj, const char *fpath, const char *filename, git_off_t filesize)
 575 {
 576         char tmp[PATH_MAX] = "";
 577         char *d;
 578         const char *p;
 579         int lc = 0;
 580         FILE *fp;
 581
 582         d = xdirname(fpath);
 583         if (mkdirp(d)) {
 584                 free(d);
 585                 return -1;
 586         }
 587         free(d);
 588
 589         p = fpath;
 590         while (*p) {
 591                 if (*p == '/')
 592                         strlcat(tmp, "../", sizeof(tmp));
 593                 p++;
 594         }
 595         relpath = tmp;
 596
 597         fp = efopen(fpath, "w");
 598         writeheader(fp);
 599         fputs("<p> ", fp);
 600         xmlencode(fp, filename, strlen(filename));
 601         fprintf(fp, " (%juB)", (uintmax_t)filesize);
 602         fputs("</p><hr/>", fp);
 603
 604         if (git_blob_is_binary((git_blob *)obj)) {
 605                 fputs("<p>Binary file</p>\n", fp);
 606         } else {
 607                 lc = writeblobhtml(fp, (git_blob *)obj);
 608                 if (ferror(fp))
 609                         err(1, "fwrite");
 610         }
 611         writefooter(fp);
 612         fclose(fp);
 613
 614         relpath = "";
 615
 616         return lc;
 617 }
 618
 619 const char *
 620 filemode(git_filemode_t m)
 621 {
 622         static char mode[11];
 623
 624         memset(mode, '-', sizeof(mode) - 1);
 625         mode[10] = '\0';
 626
 627         if (S_ISREG(m))
 628                 mode[0] = '-';
 629         else if (S_ISBLK(m))
 630                 mode[0] = 'b';
 631         else if (S_ISCHR(m))
 632                 mode[0] = 'c';
 633         else if (S_ISDIR(m))
 634                 mode[0] = 'd';
 635         else if (S_ISFIFO(m))
 636                 mode[0] = 'p';
 637         else if (S_ISLNK(m))
 638                 mode[0] = 'l';
 639         else if (S_ISSOCK(m))
 640                 mode[0] = 's';
 641         else
 642                 mode[0] = '?';
 643
 644         if (m & S_IRUSR) mode[1] = 'r';
 645         if (m & S_IWUSR) mode[2] = 'w';
 646         if (m & S_IXUSR) mode[3] = 'x';
 647         if (m & S_IRGRP) mode[4] = 'r';
 648         if (m & S_IWGRP) mode[5] = 'w';
 649         if (m & S_IXGRP) mode[6] = 'x';
 650         if (m & S_IROTH) mode[7] = 'r';
 651         if (m & S_IWOTH) mode[8] = 'w';
 652         if (m & S_IXOTH) mode[9] = 'x';
 653
 654         if (m & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
 655         if (m & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
 656         if (m & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T';
 657
 658         return mode;
 659 }
 660
 661 int
 662 writefilestree(FILE *fp, git_tree *tree, const char *branch, const char *path)
 663 {
 664         const git_tree_entry *entry = NULL;
 665         const char *entryname;
 666         char filepath[PATH_MAX], entrypath[PATH_MAX];
 667         git_object *obj = NULL;
 668         git_off_t filesize;
 669         size_t count, i;
 670         int lc, ret;
 671
 672         count = git_tree_entrycount(tree);
 673         for (i = 0; i < count; i++) {
 674                 if (!(entry = git_tree_entry_byindex(tree, i)) ||
 675                     git_tree_entry_to_object(&obj, repo, entry))
 676                         return -1;
 677                 entryname = git_tree_entry_name(entry);
 678                 snprintf(entrypath, sizeof(entrypath), "%s%s%s",
 679                          path, path[0] ? "/" : "", entryname);
 680                 switch (git_object_type(obj)) {
 681                 case GIT_OBJ_BLOB:
 682                         break;
 683                 case GIT_OBJ_TREE:
 684                         /* NOTE: recurses */
 685                         ret = writefilestree(fp, (git_tree *)obj, branch,
 686                                              entrypath);
 687                         git_object_free(obj);
 688                         if (ret)
 689                                 return ret;
 690                         continue;
 691                 default:
 692                         git_object_free(obj);
 693                         continue;
 694                 }
 695                 if (path[0])
 696                         snprintf(filepath, sizeof(filepath), "file/%s/%s.html",
 697                                  path, entryname);
 698                 else
 699                         snprintf(filepath, sizeof(filepath), "file/%s.html",
 700                                  entryname);
 701                 filesize = git_blob_rawsize((git_blob *)obj);
 702
 703                 lc = writeblob(obj, filepath, entryname, filesize);
 704
 705                 fputs("<tr><td>", fp);
 706                 fputs(filemode(git_tree_entry_filemode(entry)), fp);
 707                 fprintf(fp, "</td><td><a href=\"%s%s\">", relpath, filepath);
 708                 xmlencode(fp, entrypath, strlen(entrypath));
 709                 fputs("</a></td><td class=\"num\">", fp);
 710                 if (showlinecount && lc > 0)
 711                         fprintf(fp, "%dL", lc);
 712                 else
 713                         fprintf(fp, "%juB", (uintmax_t)filesize);
 714                 fputs("</td></tr>\n", fp);
 715         }
 716
 717         return 0;
 718 }
 719
 720 int
 721 writefiles(FILE *fp, const git_oid *id, const char *branch)
 722 {
 723         git_tree *tree = NULL;
 724         git_commit *commit = NULL;
 725         int ret = -1;
 726
 727         fputs("<table id=\"files\"><thead>\n<tr>"
 728               "<td>Mode</td><td>Name</td><td class=\"num\">Size</td>"
 729               "</tr>\n</thead><tbody>\n", fp);
 730
 731         if (git_commit_lookup(&commit, repo, id) ||
 732             git_commit_tree(&tree, commit))
 733                 goto err;
 734         ret = writefilestree(fp, tree, branch, "");
 735
 736 err:
 737         fputs("</tbody></table>", fp);
 738
 739         git_commit_free(commit);
 740         git_tree_free(tree);
 741
 742         return ret;
 743 }
 744
 745 int
 746 refs_cmp(const void *v1, const void *v2)
 747 {
 748         git_reference *r1 = (*(git_reference **)v1);
 749         git_reference *r2 = (*(git_reference **)v2);
 750         int t1, t2;
 751
 752         t1 = git_reference_is_branch(r1);
 753         t2 = git_reference_is_branch(r2);
 754
 755         if (t1 != t2)
 756                 return t1 - t2;
 757
 758         return strcmp(git_reference_shorthand(r1),
 759                       git_reference_shorthand(r2));
 760 }
 761
 762 int
 763 writerefs(FILE *fp)
 764 {
 765         struct commitinfo *ci;
 766         const git_oid *id = NULL;
 767         git_object *obj = NULL;
 768         git_reference *dref = NULL, *r, *ref = NULL;
 769         git_reference_iterator *it = NULL;
 770         git_reference **refs = NULL;
 771         size_t count, i, j, refcount = 0;
 772         const char *cols[] = { "Branch", "Tag" }; /* first column title */
 773         const char *titles[] = { "Branches", "Tags" };
 774         const char *ids[] = { "branches", "tags" };
 775         const char *name;
 776
 777         if (git_reference_iterator_new(&it, repo))
 778                 return -1;
 779
 780         for (refcount = 0; !git_reference_next(&ref, it); refcount++) {
 781                 if (!(refs = reallocarray(refs, refcount + 1, sizeof(git_reference *))))
 782                         err(1, "realloc");
 783                 refs[refcount] = ref;
 784         }
 785         git_reference_iterator_free(it);
 786
 787         /* sort by type then shorthand name */
 788         qsort(refs, refcount, sizeof(git_reference *), refs_cmp);
 789
 790         for (j = 0; j < 2; j++) {
 791                 for (i = 0, count = 0; i < refcount; i++) {
 792                         if (!(git_reference_is_branch(refs[i]) && j == 0) &&
 793                             !(git_reference_is_tag(refs[i]) && j == 1))
 794                                 continue;
 795
 796                         switch (git_reference_type(refs[i])) {
 797                         case GIT_REF_SYMBOLIC:
 798                                 if (git_reference_resolve(&dref, refs[i]))
 799                                         goto err;
 800                                 r = dref;
 801                                 break;
 802                         case GIT_REF_OID:
 803                                 r = refs[i];
 804                                 break;
 805                         default:
 806                                 continue;
 807                         }
 808                         if (!(id = git_reference_target(r)))
 809                                 goto err;
 810                         if (git_reference_peel(&obj, r, GIT_OBJ_ANY))
 811                                 goto err;
 812                         if (!(id = git_object_id(obj)))
 813                                 goto err;
 814                         if (!(ci = commitinfo_getbyoid(id)))
 815                                 break;
 816
 817                         /* print header if it has an entry (first). */
 818                         if (++count == 1) {
 819                                 fprintf(fp, "<h2>%s</h2><table id=\"%s\"><thead>\n<tr><td>%s</td>"
 820                                       "<td>Last commit date</td><td>Author</td>\n</tr>\n</thead><tbody>\n",
 821                                       titles[j], ids[j], cols[j]);
 822                         }
 823
 824                         relpath = "";
 825                         name = git_reference_shorthand(r);
 826
 827                         fputs("<tr><td>", fp);
 828                         xmlencode(fp, name, strlen(name));
 829                         fputs("</td><td>", fp);
 830                         if (ci->author)
 831                                 printtimeshort(fp, &(ci->author->when));
 832                         fputs("</td><td>", fp);
 833                         if (ci->author)
 834                                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 835                         fputs("</td></tr>\n", fp);
 836
 837                         relpath = "../";
 838
 839                         commitinfo_free(ci);
 840                         git_object_free(obj);
 841                         obj = NULL;
 842                         git_reference_free(dref);
 843                         dref = NULL;
 844                 }
 845                 /* table footer */
 846                 if (count)
 847                         fputs("</tbody></table><br/>", fp);
 848         }
 849
 850 err:
 851         git_object_free(obj);
 852         git_reference_free(dref);
 853
 854         for (i = 0; i < refcount; i++)
 855                 git_reference_free(refs[i]);
 856         free(refs);
 857
 858         return 0;
 859 }
 860
 861 int
 862 main(int argc, char *argv[])
 863 {
 864         git_object *obj = NULL;
 865         const git_oid *head = NULL;
 866         const git_error *e = NULL;
 867         FILE *fp, *fpread;
 868         char path[PATH_MAX], *p;
 869         int status;
 870
 871         if (argc != 2) {
 872                 fprintf(stderr, "%s <repodir>\n", argv[0]);
 873                 return 1;
 874         }
 875         repodir = argv[1];
 876
 877         git_libgit2_init();
 878
 879         if ((status = git_repository_open_ext(&repo, repodir,
 880                 GIT_REPOSITORY_OPEN_NO_SEARCH, NULL)) < 0) {
 881                 e = giterr_last();
 882                 fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
 883                 return status;
 884         }
 885
 886         /* find HEAD */
 887         if (git_revparse_single(&obj, repo, "HEAD"))
 888                 return 1;
 889         head = git_object_id(obj);
 890         git_object_free(obj);
 891
 892         /* use directory name as name */
 893         name = xbasename(repodir);
 894
 895         /* strip .git suffix */
 896         if (!(stripped_name = strdup(name)))
 897                 err(1, "strdup");
 898         if ((p = strrchr(stripped_name, '.')))
 899                 if (!strcmp(p, ".git"))
 900                         *p = '\0';
 901
 902         /* read description or .git/description */
 903         snprintf(path, sizeof(path), "%s%s%s",
 904                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 905         if (!(fpread = fopen(path, "r"))) {
 906                 snprintf(path, sizeof(path), "%s%s%s",
 907                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 908                 fpread = fopen(path, "r");
 909         }
 910         if (fpread) {
 911                 if (!fgets(description, sizeof(description), fpread))
 912                         description[0] = '\0';
 913                 fclose(fpread);
 914         }
 915
 916         /* read url or .git/url */
 917         snprintf(path, sizeof(path), "%s%s%s",
 918                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "url");
 919         if (!(fpread = fopen(path, "r"))) {
 920                 snprintf(path, sizeof(path), "%s%s%s",
 921                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/url");
 922                 fpread = fopen(path, "r");
 923         }
 924         if (fpread) {
 925                 if (!fgets(cloneurl, sizeof(cloneurl), fpread))
 926                         cloneurl[0] = '\0';
 927                 cloneurl[strcspn(cloneurl, "\n")] = '\0';
 928                 fclose(fpread);
 929         }
 930
 931         /* check LICENSE */
 932         haslicense = !git_revparse_single(&obj, repo, "HEAD:LICENSE");
 933         git_object_free(obj);
 934         /* check README */
 935         hasreadme = !git_revparse_single(&obj, repo, "HEAD:README");
 936         git_object_free(obj);
 937
 938         /* log for HEAD */
 939         fp = efopen("log.html", "w");
 940         relpath = "";
 941         writeheader(fp);
 942         mkdir("commit", 0755);
 943         writelog(fp, head);
 944         writefooter(fp);
 945         fclose(fp);
 946
 947         /* files for HEAD */
 948         fp = efopen("files.html", "w");
 949         writeheader(fp);
 950         writefiles(fp, head, "HEAD");
 951         writefooter(fp);
 952         fclose(fp);
 953
 954         /* summary page with branches and tags */
 955         fp = efopen("refs.html", "w");
 956         writeheader(fp);
 957         writerefs(fp);
 958         writefooter(fp);
 959         fclose(fp);
 960
 961         /* Atom feed */
 962         fp = efopen("atom.xml", "w");
 963         writeatom(fp);
 964         fclose(fp);
 965
 966         /* cleanup */
 967         git_repository_free(repo);
 968         git_libgit2_shutdown();
 969
 970         return 0;
 971 }