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 int
 166 mkdirp(const char *path)
 167 {
 168         char tmp[PATH_MAX], *p;
 169
 170         if (strlcpy(tmp, path, sizeof(tmp)) >= sizeof(tmp))
 171                 errx(1, "path truncated: '%s'", path);
 172         for (p = tmp + (tmp[0] == '/'); *p; p++) {
 173                 if (*p != '/')
 174                         continue;
 175                 *p = '\0';
 176                 if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
 177                         return -1;
 178                 *p = '/';
 179         }
 180         if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
 181                 return -1;
 182         return 0;
 183 }
 184
 185 void
 186 printtimeformat(FILE *fp, const git_time *intime, const char *fmt)
 187 {
 188         struct tm *intm;
 189         time_t t;
 190         char out[32];
 191
 192         t = (time_t) intime->time + (intime->offset * 60);
 193         intm = gmtime(&t);
 194         strftime(out, sizeof(out), fmt, intm);
 195         fputs(out, fp);
 196 }
 197
 198 void
 199 printtimez(FILE *fp, const git_time *intime)
 200 {
 201         printtimeformat(fp, intime, "%Y-%m-%dT%H:%M:%SZ");
 202 }
 203
 204 void
 205 printtime(FILE *fp, const git_time *intime)
 206 {
 207         printtimeformat(fp, intime, "%a %b %e %T %Y");
 208 }
 209
 210 void
 211 printtimeshort(FILE *fp, const git_time *intime)
 212 {
 213         printtimeformat(fp, intime, "%Y-%m-%d %H:%M");
 214 }
 215
 216 int
 217 writeheader(FILE *fp, const char *title)
 218 {
 219         fputs("<!DOCTYPE html>\n"
 220                 "<html dir=\"ltr\" lang=\"en\">\n<head>\n"
 221                 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
 222                 "<meta http-equiv=\"Content-Language\" content=\"en\" />\n<title>", fp);
 223         xmlencode(fp, title, strlen(title));
 224         if (title[0] && stripped_name[0])
 225                 fputs(" - ", fp);
 226         xmlencode(fp, stripped_name, strlen(stripped_name));
 227         if (description[0])
 228                 fputs(" - ", fp);
 229         xmlencode(fp, description, strlen(description));
 230         fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
 231         fprintf(fp, "<link rel=\"alternate\" type=\"application/atom+xml\" title=\"%s Atom Feed\" href=\"%satom.xml\" />\n",
 232                 name, relpath);
 233         fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
 234         fputs("</head>\n<body>\n<table><tr><td>", fp);
 235         fprintf(fp, "<a href=\"../%s\"><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /></a>",
 236                 relpath, relpath);
 237         fputs("</td><td><h1>", fp);
 238         xmlencode(fp, stripped_name, strlen(stripped_name));
 239         fputs("</h1><span class=\"desc\">", fp);
 240         xmlencode(fp, description, strlen(description));
 241         fputs("</span></td></tr>", fp);
 242         if (cloneurl[0]) {
 243                 fputs("<tr class=\"url\"><td></td><td>git clone <a href=\"", fp);
 244                 xmlencode(fp, cloneurl, strlen(cloneurl));
 245                 fputs("\">", fp);
 246                 xmlencode(fp, cloneurl, strlen(cloneurl));
 247                 fputs("</a></td></tr>", fp);
 248         }
 249         fputs("<tr><td></td><td>\n", fp);
 250         fprintf(fp, "<a href=\"%slog.html\">Log</a> | ", relpath);
 251         fprintf(fp, "<a href=\"%sfiles.html\">Files</a> | ", relpath);
 252         fprintf(fp, "<a href=\"%srefs.html\">Refs</a>", relpath);
 253         if (hasreadme)
 254                 fprintf(fp, " | <a href=\"%sfile/README.html\">README</a>", relpath);
 255         if (haslicense)
 256                 fprintf(fp, " | <a href=\"%sfile/LICENSE.html\">LICENSE</a>", relpath);
 257         fputs("</td></tr></table>\n<hr/>\n<div id=\"content\">\n", fp);
 258
 259         return 0;
 260 }
 261
 262 int
 263 writefooter(FILE *fp)
 264 {
 265         return !fputs("</div>\n</body>\n</html>\n", fp);
 266 }
 267
 268 int
 269 writeblobhtml(FILE *fp, const git_blob *blob)
 270 {
 271         off_t i;
 272         size_t n = 0;
 273         char *nfmt = "<a href=\"#l%d\" id=\"l%d\">%d</a>\n";
 274         const char *s = git_blob_rawcontent(blob);
 275         git_off_t len = git_blob_rawsize(blob);
 276
 277         fputs("<table id=\"blob\"><tr><td class=\"num\"><pre>\n", fp);
 278
 279         if (len) {
 280                 n++;
 281                 fprintf(fp, nfmt, n, n, n);
 282                 for (i = 0; i < len - 1; i++) {
 283                         if (s[i] == '\n') {
 284                                 n++;
 285                                 fprintf(fp, nfmt, n, n, n);
 286                         }
 287                 }
 288         }
 289
 290         fputs("</pre></td><td><pre>\n", fp);
 291         xmlencode(fp, s, (size_t)len);
 292         fputs("</pre></td></tr></table>\n", fp);
 293
 294         return n;
 295 }
 296
 297 void
 298 printcommit(FILE *fp, struct commitinfo *ci)
 299 {
 300         fprintf(fp, "<b>commit</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 301                 relpath, ci->oid, ci->oid);
 302
 303         if (ci->parentoid[0])
 304                 fprintf(fp, "<b>parent</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 305                         relpath, ci->parentoid, ci->parentoid);
 306
 307         if (ci->author) {
 308                 fputs("<b>Author:</b> ", fp);
 309                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 310                 fputs(" &lt;<a href=\"mailto:", fp);
 311                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 312                 fputs("\">", fp);
 313                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 314                 fputs("</a>&gt;\n<b>Date:</b>   ", fp);
 315                 printtime(fp, &(ci->author->when));
 316                 fputc('\n', fp);
 317         }
 318         if (ci->msg) {
 319                 fputc('\n', fp);
 320                 xmlencode(fp, ci->msg, strlen(ci->msg));
 321                 fputc('\n', fp);
 322         }
 323 }
 324
 325 void
 326 printshowfile(FILE *fp, struct commitinfo *ci)
 327 {
 328         const git_diff_delta *delta;
 329         const git_diff_hunk *hunk;
 330         const git_diff_line *line;
 331         git_patch *patch;
 332         git_buf statsbuf;
 333         size_t ndeltas, nhunks, nhunklines;
 334         size_t i, j, k;
 335
 336         printcommit(fp, ci);
 337
 338         memset(&statsbuf, 0, sizeof(statsbuf));
 339
 340         /* diff stat */
 341         if (ci->stats &&
 342             !git_diff_stats_to_buf(&statsbuf, ci->stats,
 343                                    GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT, 80)) {
 344                 if (statsbuf.ptr && statsbuf.ptr[0]) {
 345                         fputs("<b>Diffstat:</b>\n", fp);
 346                         xmlencode(fp, statsbuf.ptr, strlen(statsbuf.ptr));
 347                 }
 348         }
 349
 350         fputs("<hr/>", fp);
 351
 352         ndeltas = git_diff_num_deltas(ci->diff);
 353         for (i = 0; i < ndeltas; i++) {
 354                 if (git_patch_from_diff(&patch, ci->diff, i)) {
 355                         git_patch_free(patch);
 356                         break;
 357                 }
 358
 359                 delta = git_patch_get_delta(patch);
 360                 fprintf(fp, "<b>diff --git a/<a href=\"%sfile/%s.html\">%s</a> b/<a href=\"%sfile/%s.html\">%s</a></b>\n",
 361                         relpath, delta->old_file.path, delta->old_file.path,
 362                         relpath, delta->new_file.path, delta->new_file.path);
 363
 364                 /* check binary data */
 365                 if (delta->flags & GIT_DIFF_FLAG_BINARY) {
 366                         fputs("Binary files differ\n", fp);
 367                         git_patch_free(patch);
 368                         continue;
 369                 }
 370
 371                 nhunks = git_patch_num_hunks(patch);
 372                 for (j = 0; j < nhunks; j++) {
 373                         if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
 374                                 break;
 375
 376                         fprintf(fp, "<a href=\"#h%zu-%zu\" id=\"h%zu-%zu\" class=\"h\">", i, j, i, j);
 377                         xmlencode(fp, hunk->header, hunk->header_len);
 378                         fputs("</a>", fp);
 379
 380                         for (k = 0; ; k++) {
 381                                 if (git_patch_get_line_in_hunk(&line, patch, j, k))
 382                                         break;
 383                                 if (line->old_lineno == -1)
 384                                         fprintf(fp, "<a href=\"#h%zu-%zu-%zu\" id=\"h%zu-%zu-%zu\" class=\"i\">+",
 385                                                 i, j, k, i, j, k);
 386                                 else if (line->new_lineno == -1)
 387                                         fprintf(fp, "<a href=\"#h%zu-%zu-%zu\" id=\"h%zu-%zu-%zu\" class=\"d\">-",
 388                                                 i, j, k, i, j, k);
 389                                 else
 390                                         fputc(' ', fp);
 391                                 xmlencode(fp, line->content, line->content_len);
 392                                 if (line->old_lineno == -1 || line->new_lineno == -1)
 393                                         fputs("</a>", fp);
 394                         }
 395                 }
 396                 git_patch_free(patch);
 397         }
 398         git_buf_free(&statsbuf);
 399
 400         return;
 401 }
 402
 403 int
 404 writelog(FILE *fp, const git_oid *oid)
 405 {
 406         struct commitinfo *ci;
 407         git_revwalk *w = NULL;
 408         git_oid id;
 409         size_t len;
 410         char path[PATH_MAX];
 411         FILE *fpfile;
 412         int r;
 413
 414         git_revwalk_new(&w, repo);
 415         git_revwalk_push(w, oid);
 416         git_revwalk_sorting(w, GIT_SORT_TIME);
 417         git_revwalk_simplify_first_parent(w);
 418
 419         fputs("<table id=\"log\"><thead>\n<tr><td>Date</td><td>Commit message</td>"
 420                   "<td>Author</td><td class=\"num\">Files</td><td class=\"num\">+</td>"
 421                   "<td class=\"num\">-</td></tr>\n</thead><tbody>\n", fp);
 422
 423         while (!git_revwalk_next(&id, w)) {
 424                 relpath = "";
 425
 426                 if (!(ci = commitinfo_getbyoid(&id)))
 427                         break;
 428
 429                 fputs("<tr><td>", fp);
 430                 if (ci->author)
 431                         printtimeshort(fp, &(ci->author->when));
 432                 fputs("</td><td>", fp);
 433                 if (ci->summary) {
 434                         fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 435                         if ((len = strlen(ci->summary)) > summarylen) {
 436                                 xmlencode(fp, ci->summary, summarylen - 1);
 437                                 fputs("…", fp);
 438                         } else {
 439                                 xmlencode(fp, ci->summary, len);
 440                         }
 441                         fputs("</a>", fp);
 442                 }
 443                 fputs("</td><td>", fp);
 444                 if (ci->author)
 445                         xmlencode(fp, ci->author->name, strlen(ci->author->name));
 446                 fputs("</td><td class=\"num\">", fp);
 447                 fprintf(fp, "%zu", ci->filecount);
 448                 fputs("</td><td class=\"num\">", fp);
 449                 fprintf(fp, "+%zu", ci->addcount);
 450                 fputs("</td><td class=\"num\">", fp);
 451                 fprintf(fp, "-%zu", ci->delcount);
 452                 fputs("</td></tr>\n", fp);
 453
 454                 relpath = "../";
 455
 456                 r = snprintf(path, sizeof(path), "commit/%s.html", ci->oid);
 457                 if (r == -1 || (size_t)r >= sizeof(path))
 458                         errx(1, "path truncated: 'commit/%s.html'", ci->oid);
 459
 460                 /* check if file exists if so skip it */
 461                 if (access(path, F_OK)) {
 462                         fpfile = efopen(path, "w");
 463                         writeheader(fpfile, ci->summary);
 464                         fputs("<pre>", fpfile);
 465                         printshowfile(fpfile, ci);
 466                         fputs("</pre>\n", fpfile);
 467                         writefooter(fpfile);
 468                         fclose(fpfile);
 469                 }
 470                 commitinfo_free(ci);
 471         }
 472         fputs("</tbody></table>", fp);
 473
 474         git_revwalk_free(w);
 475
 476         relpath = "";
 477
 478         return 0;
 479 }
 480
 481 void
 482 printcommitatom(FILE *fp, struct commitinfo *ci)
 483 {
 484         fputs("<entry>\n", fp);
 485
 486         fprintf(fp, "<id>%s</id>\n", ci->oid);
 487         if (ci->author) {
 488                 fputs("<updated>", fp);
 489                 printtimez(fp, &(ci->author->when));
 490                 fputs("</updated>\n", fp);
 491         }
 492         if (ci->summary) {
 493                 fputs("<title type=\"text\">", fp);
 494                 xmlencode(fp, ci->summary, strlen(ci->summary));
 495                 fputs("</title>\n", fp);
 496         }
 497         fprintf(fp, "<link rel=\"alternate\" type=\"text/html\" href=\"commit/%s.html\" />",
 498                 ci->oid);
 499
 500         if (ci->author) {
 501                 fputs("<author><name>", fp);
 502                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 503                 fputs("</name>\n<email>", fp);
 504                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 505                 fputs("</email>\n</author>\n", fp);
 506         }
 507
 508         fputs("<content type=\"text\">", fp);
 509         fprintf(fp, "commit %s\n", ci->oid);
 510         if (ci->parentoid[0])
 511                 fprintf(fp, "parent %s\n", ci->parentoid);
 512         if (ci->author) {
 513                 fputs("Author: ", fp);
 514                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 515                 fputs(" &lt;", fp);
 516                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 517                 fputs("&gt;\nDate:   ", fp);
 518                 printtime(fp, &(ci->author->when));
 519                 fputc('\n', fp);
 520         }
 521         if (ci->msg) {
 522                 fputc('\n', fp);
 523                 xmlencode(fp, ci->msg, strlen(ci->msg));
 524         }
 525         fputs("\n</content>\n", fp);
 526
 527         fputs("</entry>\n", fp);
 528 }
 529
 530 int
 531 writeatom(FILE *fp)
 532 {
 533         struct commitinfo *ci;
 534         git_revwalk *w = NULL;
 535         git_oid id;
 536         size_t i, m = 100; /* max */
 537
 538         fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 539               "<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
 540         xmlencode(fp, stripped_name, strlen(stripped_name));
 541         fputs(", branch HEAD</title>\n<subtitle>", fp);
 542         xmlencode(fp, description, strlen(description));
 543         fputs("</subtitle>\n", fp);
 544
 545         git_revwalk_new(&w, repo);
 546         git_revwalk_push_head(w);
 547         git_revwalk_sorting(w, GIT_SORT_TIME);
 548         git_revwalk_simplify_first_parent(w);
 549
 550         for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
 551                 if (!(ci = commitinfo_getbyoid(&id)))
 552                         break;
 553                 printcommitatom(fp, ci);
 554                 commitinfo_free(ci);
 555         }
 556         git_revwalk_free(w);
 557
 558         fputs("</feed>", fp);
 559
 560         return 0;
 561 }
 562
 563 int
 564 writeblob(git_object *obj, const char *fpath, const char *filename, git_off_t filesize)
 565 {
 566         char tmp[PATH_MAX] = "";
 567         char *d;
 568         const char *p;
 569         int lc = 0;
 570         FILE *fp;
 571
 572         d = xdirname(fpath);
 573         if (mkdirp(d)) {
 574                 free(d);
 575                 return -1;
 576         }
 577         free(d);
 578
 579         p = fpath;
 580         while (*p) {
 581                 if (*p == '/' && strlcat(tmp, "../", sizeof(tmp)) >= sizeof(tmp))
 582                         errx(1, "path truncated: '../%s'", tmp);
 583                 p++;
 584         }
 585         relpath = tmp;
 586
 587         fp = efopen(fpath, "w");
 588         writeheader(fp, filename);
 589         fputs("<p> ", fp);
 590         xmlencode(fp, filename, strlen(filename));
 591         fprintf(fp, " (%juB)", (uintmax_t)filesize);
 592         fputs("</p><hr/>", fp);
 593
 594         if (git_blob_is_binary((git_blob *)obj)) {
 595                 fputs("<p>Binary file</p>\n", fp);
 596         } else {
 597                 lc = writeblobhtml(fp, (git_blob *)obj);
 598                 if (ferror(fp))
 599                         err(1, "fwrite");
 600         }
 601         writefooter(fp);
 602         fclose(fp);
 603
 604         relpath = "";
 605
 606         return lc;
 607 }
 608
 609 const char *
 610 filemode(git_filemode_t m)
 611 {
 612         static char mode[11];
 613
 614         memset(mode, '-', sizeof(mode) - 1);
 615         mode[10] = '\0';
 616
 617         if (S_ISREG(m))
 618                 mode[0] = '-';
 619         else if (S_ISBLK(m))
 620                 mode[0] = 'b';
 621         else if (S_ISCHR(m))
 622                 mode[0] = 'c';
 623         else if (S_ISDIR(m))
 624                 mode[0] = 'd';
 625         else if (S_ISFIFO(m))
 626                 mode[0] = 'p';
 627         else if (S_ISLNK(m))
 628                 mode[0] = 'l';
 629         else if (S_ISSOCK(m))
 630                 mode[0] = 's';
 631         else
 632                 mode[0] = '?';
 633
 634         if (m & S_IRUSR) mode[1] = 'r';
 635         if (m & S_IWUSR) mode[2] = 'w';
 636         if (m & S_IXUSR) mode[3] = 'x';
 637         if (m & S_IRGRP) mode[4] = 'r';
 638         if (m & S_IWGRP) mode[5] = 'w';
 639         if (m & S_IXGRP) mode[6] = 'x';
 640         if (m & S_IROTH) mode[7] = 'r';
 641         if (m & S_IWOTH) mode[8] = 'w';
 642         if (m & S_IXOTH) mode[9] = 'x';
 643
 644         if (m & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
 645         if (m & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
 646         if (m & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T';
 647
 648         return mode;
 649 }
 650
 651 int
 652 writefilestree(FILE *fp, git_tree *tree, const char *branch, const char *path)
 653 {
 654         const git_tree_entry *entry = NULL;
 655         const char *entryname;
 656         char filepath[PATH_MAX], entrypath[PATH_MAX];
 657         git_object *obj = NULL;
 658         git_off_t filesize;
 659         size_t count, i;
 660         int lc, r, ret;
 661
 662         count = git_tree_entrycount(tree);
 663         for (i = 0; i < count; i++) {
 664                 if (!(entry = git_tree_entry_byindex(tree, i)) ||
 665                     git_tree_entry_to_object(&obj, repo, entry))
 666                         return -1;
 667                 entryname = git_tree_entry_name(entry);
 668                 r = snprintf(entrypath, sizeof(entrypath), "%s%s%s",
 669                          path, path[0] ? "/" : "", entryname);
 670                 if (r == -1 || (size_t)r >= sizeof(entrypath))
 671                         errx(1, "path truncated: '%s%s%s'",
 672                                 path, path[0] ? "/" : "", entryname);
 673                 switch (git_object_type(obj)) {
 674                 case GIT_OBJ_BLOB:
 675                         break;
 676                 case GIT_OBJ_TREE:
 677                         /* NOTE: recurses */
 678                         ret = writefilestree(fp, (git_tree *)obj, branch,
 679                                              entrypath);
 680                         git_object_free(obj);
 681                         if (ret)
 682                                 return ret;
 683                         continue;
 684                 default:
 685                         git_object_free(obj);
 686                         continue;
 687                 }
 688
 689                 r = snprintf(filepath, sizeof(filepath), "file/%s%s%s.html",
 690                          path, path[0] ? "/" : "", entryname);
 691                 if (r == -1 || (size_t)r >= sizeof(filepath))
 692                         errx(1, "path truncated: 'file/%s%s%s.html'",
 693                                 path, path[0] ? "/" : "", entryname);
 694
 695                 filesize = git_blob_rawsize((git_blob *)obj);
 696
 697                 lc = writeblob(obj, filepath, entryname, filesize);
 698
 699                 fputs("<tr><td>", fp);
 700                 fputs(filemode(git_tree_entry_filemode(entry)), fp);
 701                 fprintf(fp, "</td><td><a href=\"%s%s\">", relpath, filepath);
 702                 xmlencode(fp, entrypath, strlen(entrypath));
 703                 fputs("</a></td><td class=\"num\">", fp);
 704                 if (showlinecount && lc > 0)
 705                         fprintf(fp, "%dL", lc);
 706                 else
 707                         fprintf(fp, "%juB", (uintmax_t)filesize);
 708                 fputs("</td></tr>\n", fp);
 709         }
 710
 711         return 0;
 712 }
 713
 714 int
 715 writefiles(FILE *fp, const git_oid *id, const char *branch)
 716 {
 717         git_tree *tree = NULL;
 718         git_commit *commit = NULL;
 719         int ret = -1;
 720
 721         fputs("<table id=\"files\"><thead>\n<tr>"
 722               "<td>Mode</td><td>Name</td><td class=\"num\">Size</td>"
 723               "</tr>\n</thead><tbody>\n", fp);
 724
 725         if (git_commit_lookup(&commit, repo, id) ||
 726             git_commit_tree(&tree, commit))
 727                 goto err;
 728         ret = writefilestree(fp, tree, branch, "");
 729
 730 err:
 731         fputs("</tbody></table>", fp);
 732
 733         git_commit_free(commit);
 734         git_tree_free(tree);
 735
 736         return ret;
 737 }
 738
 739 int
 740 refs_cmp(const void *v1, const void *v2)
 741 {
 742         git_reference *r1 = (*(git_reference **)v1);
 743         git_reference *r2 = (*(git_reference **)v2);
 744         int t1, t2;
 745
 746         t1 = git_reference_is_branch(r1);
 747         t2 = git_reference_is_branch(r2);
 748
 749         if (t1 != t2)
 750                 return t1 - t2;
 751
 752         return strcmp(git_reference_shorthand(r1),
 753                       git_reference_shorthand(r2));
 754 }
 755
 756 int
 757 writerefs(FILE *fp)
 758 {
 759         struct commitinfo *ci;
 760         const git_oid *id = NULL;
 761         git_object *obj = NULL;
 762         git_reference *dref = NULL, *r, *ref = NULL;
 763         git_reference_iterator *it = NULL;
 764         git_reference **refs = NULL;
 765         size_t count, i, j, refcount = 0;
 766         const char *titles[] = { "Branches", "Tags" };
 767         const char *ids[] = { "branches", "tags" };
 768         const char *name;
 769
 770         if (git_reference_iterator_new(&it, repo))
 771                 return -1;
 772
 773         for (refcount = 0; !git_reference_next(&ref, it); refcount++) {
 774                 if (!(refs = reallocarray(refs, refcount + 1, sizeof(git_reference *))))
 775                         err(1, "realloc");
 776                 refs[refcount] = ref;
 777         }
 778         git_reference_iterator_free(it);
 779
 780         /* sort by type then shorthand name */
 781         qsort(refs, refcount, sizeof(git_reference *), refs_cmp);
 782
 783         for (j = 0; j < 2; j++) {
 784                 for (i = 0, count = 0; i < refcount; i++) {
 785                         if (!(git_reference_is_branch(refs[i]) && j == 0) &&
 786                             !(git_reference_is_tag(refs[i]) && j == 1))
 787                                 continue;
 788
 789                         switch (git_reference_type(refs[i])) {
 790                         case GIT_REF_SYMBOLIC:
 791                                 if (git_reference_resolve(&dref, refs[i]))
 792                                         goto err;
 793                                 r = dref;
 794                                 break;
 795                         case GIT_REF_OID:
 796                                 r = refs[i];
 797                                 break;
 798                         default:
 799                                 continue;
 800                         }
 801                         if (!(id = git_reference_target(r)))
 802                                 goto err;
 803                         if (git_reference_peel(&obj, r, GIT_OBJ_ANY))
 804                                 goto err;
 805                         if (!(id = git_object_id(obj)))
 806                                 goto err;
 807                         if (!(ci = commitinfo_getbyoid(id)))
 808                                 break;
 809
 810                         /* print header if it has an entry (first). */
 811                         if (++count == 1) {
 812                                 fprintf(fp, "<h2>%s</h2><table id=\"%s\"><thead>\n<tr><td>Name</td>"
 813                                       "<td>Last commit date</td><td>Author</td>\n</tr>\n</thead><tbody>\n",
 814                                       titles[j], ids[j]);
 815                         }
 816
 817                         relpath = "";
 818                         name = git_reference_shorthand(r);
 819
 820                         fputs("<tr><td>", fp);
 821                         xmlencode(fp, name, strlen(name));
 822                         fputs("</td><td>", fp);
 823                         if (ci->author)
 824                                 printtimeshort(fp, &(ci->author->when));
 825                         fputs("</td><td>", fp);
 826                         if (ci->author)
 827                                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 828                         fputs("</td></tr>\n", fp);
 829
 830                         relpath = "../";
 831
 832                         commitinfo_free(ci);
 833                         git_object_free(obj);
 834                         obj = NULL;
 835                         git_reference_free(dref);
 836                         dref = NULL;
 837                 }
 838                 /* table footer */
 839                 if (count)
 840                         fputs("</tbody></table><br/>", fp);
 841         }
 842
 843 err:
 844         git_object_free(obj);
 845         git_reference_free(dref);
 846
 847         for (i = 0; i < refcount; i++)
 848                 git_reference_free(refs[i]);
 849         free(refs);
 850
 851         return 0;
 852 }
 853
 854 int
 855 main(int argc, char *argv[])
 856 {
 857         git_object *obj = NULL;
 858         const git_oid *head = NULL;
 859         const git_error *e = NULL;
 860         FILE *fp, *fpread;
 861         char path[PATH_MAX], repodirabs[PATH_MAX + 1], *p;
 862         int r, status;
 863
 864         if (argc != 2) {
 865                 fprintf(stderr, "%s <repodir>\n", argv[0]);
 866                 return 1;
 867         }
 868         repodir = argv[1];
 869         if (!realpath(repodir, repodirabs))
 870                 err(1, "realpath");
 871
 872         git_libgit2_init();
 873
 874         if ((status = git_repository_open_ext(&repo, repodir,
 875                 GIT_REPOSITORY_OPEN_NO_SEARCH, NULL)) < 0) {
 876                 e = giterr_last();
 877                 fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
 878                 return status;
 879         }
 880
 881         /* find HEAD */
 882         if (git_revparse_single(&obj, repo, "HEAD"))
 883                 return 1;
 884         head = git_object_id(obj);
 885         git_object_free(obj);
 886
 887         /* use directory name as name */
 888         if ((name = strrchr(repodirabs, '/')))
 889                 name++;
 890         else
 891                 name = "";
 892
 893         /* strip .git suffix */
 894         if (!(stripped_name = strdup(name)))
 895                 err(1, "strdup");
 896         if ((p = strrchr(stripped_name, '.')))
 897                 if (!strcmp(p, ".git"))
 898                         *p = '\0';
 899
 900         /* read description or .git/description */
 901         r = snprintf(path, sizeof(path), "%s%s%s",
 902                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 903         if (r == -1 || (size_t)r >= sizeof(path))
 904                 errx(1, "path truncated: '%s%s%s'",
 905                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 906         if (!(fpread = fopen(path, "r"))) {
 907                 r = snprintf(path, sizeof(path), "%s%s%s",
 908                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 909                 if (r == -1 || (size_t)r >= sizeof(path))
 910                         errx(1, "path truncated: '%s%s%s'",
 911                                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 912                 fpread = fopen(path, "r");
 913         }
 914         if (fpread) {
 915                 if (!fgets(description, sizeof(description), fpread))
 916                         description[0] = '\0';
 917                 fclose(fpread);
 918         }
 919
 920         /* read url or .git/url */
 921         r = snprintf(path, sizeof(path), "%s%s%s",
 922                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "url");
 923         if (r == -1 || (size_t)r >= sizeof(path))
 924                 errx(1, "path truncated: '%s%s%s'",
 925                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "url");
 926         if (!(fpread = fopen(path, "r"))) {
 927                 r = snprintf(path, sizeof(path), "%s%s%s",
 928                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/url");
 929                 if (r == -1 || (size_t)r >= sizeof(path))
 930                         errx(1, "path truncated: '%s%s%s'",
 931                                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/url");
 932                 fpread = fopen(path, "r");
 933         }
 934         if (fpread) {
 935                 if (!fgets(cloneurl, sizeof(cloneurl), fpread))
 936                         cloneurl[0] = '\0';
 937                 cloneurl[strcspn(cloneurl, "\n")] = '\0';
 938                 fclose(fpread);
 939         }
 940
 941         /* check LICENSE */
 942         haslicense = !git_revparse_single(&obj, repo, "HEAD:LICENSE");
 943         git_object_free(obj);
 944         /* check README */
 945         hasreadme = !git_revparse_single(&obj, repo, "HEAD:README");
 946         git_object_free(obj);
 947
 948         /* log for HEAD */
 949         fp = efopen("log.html", "w");
 950         relpath = "";
 951         writeheader(fp, "Log");
 952         mkdir("commit", 0755);
 953         writelog(fp, head);
 954         writefooter(fp);
 955         fclose(fp);
 956
 957         /* files for HEAD */
 958         fp = efopen("files.html", "w");
 959         writeheader(fp, "Files");
 960         writefiles(fp, head, "HEAD");
 961         writefooter(fp);
 962         fclose(fp);
 963
 964         /* summary page with branches and tags */
 965         fp = efopen("refs.html", "w");
 966         writeheader(fp, "Refs");
 967         writerefs(fp);
 968         writefooter(fp);
 969         fclose(fp);
 970
 971         /* Atom feed */
 972         fp = efopen("atom.xml", "w");
 973         writeatom(fp);
 974         fclose(fp);
 975
 976         /* cleanup */
 977         git_repository_free(repo);
 978         git_libgit2_shutdown();
 979
 980         return 0;
 981 }