urmoms.c

   1 #include <sys/stat.h>
   2
   3 #include <err.h>
   4 #include <inttypes.h>
   5 #include <libgen.h>
   6 #include <limits.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include <unistd.h>
  11
  12 #include "git2.h"
  13
  14 struct commitinfo {
  15         const git_oid *id;
  16
  17         char oid[GIT_OID_HEXSZ + 1];
  18         char parentoid[GIT_OID_HEXSZ + 1];
  19
  20         const git_signature *author;
  21         const char *summary;
  22         const char *msg;
  23
  24         git_diff_stats *stats;
  25         git_diff       *diff;
  26         git_commit     *commit;
  27         git_commit     *parent;
  28         git_tree       *commit_tree;
  29         git_tree       *parent_tree;
  30
  31         size_t addcount;
  32         size_t delcount;
  33         size_t filecount;
  34 };
  35
  36 static git_repository *repo;
  37
  38 static const char *relpath = "";
  39 static const char *repodir;
  40
  41 static char name[255];
  42 static char description[255];
  43 static int hasreadme, haslicense;
  44
  45 void
  46 commitinfo_free(struct commitinfo *ci)
  47 {
  48         if (!ci)
  49                 return;
  50
  51         git_diff_stats_free(ci->stats);
  52         git_diff_free(ci->diff);
  53         git_commit_free(ci->commit);
  54 }
  55
  56 struct commitinfo *
  57 commitinfo_getbyoid(const git_oid *id)
  58 {
  59         struct commitinfo *ci;
  60         int error;
  61
  62         if (!(ci = calloc(1, sizeof(struct commitinfo))))
  63                 err(1, "calloc");
  64
  65         ci->id = id;
  66         if (git_commit_lookup(&(ci->commit), repo, id))
  67                 goto err;
  68
  69         /* TODO: show tags when commit has it */
  70         git_oid_tostr(ci->oid, sizeof(ci->oid), git_commit_id(ci->commit));
  71         git_oid_tostr(ci->parentoid, sizeof(ci->parentoid), git_commit_parent_id(ci->commit, 0));
  72
  73         ci->author = git_commit_author(ci->commit);
  74         ci->summary = git_commit_summary(ci->commit);
  75         ci->msg = git_commit_message(ci->commit);
  76
  77         if ((error = git_commit_tree(&(ci->commit_tree), ci->commit)))
  78                 goto err; /* TODO: handle error */
  79         if (!(error = git_commit_parent(&(ci->parent), ci->commit, 0))) {
  80                 if ((error = git_commit_tree(&(ci->parent_tree), ci->parent)))
  81                         goto err;
  82         } else {
  83                 ci->parent = NULL;
  84                 ci->parent_tree = NULL;
  85         }
  86
  87         if ((error = git_diff_tree_to_tree(&(ci->diff), repo, ci->parent_tree, ci->commit_tree, NULL)))
  88                 goto err;
  89         if (git_diff_get_stats(&(ci->stats), ci->diff))
  90                 goto err;
  91
  92         ci->addcount = git_diff_stats_insertions(ci->stats);
  93         ci->delcount = git_diff_stats_deletions(ci->stats);
  94         ci->filecount = git_diff_stats_files_changed(ci->stats);
  95
  96         /* TODO: show tag when commit has it */
  97
  98         return ci;
  99
 100 err:
 101         commitinfo_free(ci);
 102         free(ci);
 103
 104         return NULL;
 105 }
 106
 107 int
 108 writeheader(FILE *fp)
 109 {
 110         fputs("<!DOCTYPE HTML>"
 111                 "<html dir=\"ltr\" lang=\"en\">\n<head>\n"
 112                 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
 113                 "<meta http-equiv=\"Content-Language\" content=\"en\" />\n", fp);
 114         fprintf(fp, "<title>%s%s%s</title>\n", name, description[0] ? " - " : "", description);
 115         fprintf(fp, "<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
 116         fprintf(fp, "<link rel=\"alternate\" type=\"application/atom+xml\" title=\"%s Atom Feed\" href=\"%satom.xml\" />\n",
 117                 name, relpath);
 118         fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
 119         fputs("</head>\n<body>\n<center>\n", fp);
 120         fprintf(fp, "<h1><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /> %s <span class=\"desc\">%s</span></h1>\n",
 121                 relpath, name, description);
 122         fprintf(fp, "<a href=\"%slog.html\">Log</a> | ", relpath);
 123         fprintf(fp, "<a href=\"%sfiles.html\">Files</a>", relpath);
 124         if (hasreadme)
 125                 fprintf(fp, " | <a href=\"%sreadme.html\">README</a>", relpath);
 126         if (haslicense)
 127                 fprintf(fp, " | <a href=\"%slicense.html\">LICENSE</a>", relpath);
 128         fputs("\n</center>\n<hr/>\n<pre>", fp);
 129
 130         return 0;
 131 }
 132
 133 int
 134 writefooter(FILE *fp)
 135 {
 136         return !fputs("</pre>\n</body>\n</html>", fp);
 137 }
 138
 139 FILE *
 140 efopen(const char *name, const char *flags)
 141 {
 142         FILE *fp;
 143
 144         if (!(fp = fopen(name, flags)))
 145                 err(1, "fopen");
 146
 147         return fp;
 148 }
 149
 150 /* Escape characters below as HTML 2.0 / XML 1.0. */
 151 void
 152 xmlencode(FILE *fp, const char *s, size_t len)
 153 {
 154         size_t i;
 155
 156         for (i = 0; *s && i < len; s++, i++) {
 157                 switch(*s) {
 158                 case '<':  fputs("&lt;",   fp); break;
 159                 case '>':  fputs("&gt;",   fp); break;
 160                 case '\'': fputs("&apos;", fp); break;
 161                 case '&':  fputs("&amp;",  fp); break;
 162                 case '"':  fputs("&quot;", fp); break;
 163                 default:   fputc(*s, fp);
 164                 }
 165         }
 166 }
 167
 168 /* Some implementations of basename(3) return a pointer to a static
 169  * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
 170  * This is a wrapper function that is compatible with both versions.
 171  * The program will error out if basename(3) failed, this can only happen
 172  * with the OpenBSD version. */
 173 char *
 174 xbasename(const char *path)
 175 {
 176         char *p, *b;
 177
 178         if (!(p = strdup(path)))
 179                 err(1, "strdup");
 180         if (!(b = basename(p)))
 181                 err(1, "basename");
 182         if (!(b = strdup(b)))
 183                 err(1, "strdup");
 184         free(p);
 185
 186         return b;
 187 }
 188
 189 void
 190 printtimeformat(FILE *fp, const git_time *intime, const char *fmt)
 191 {
 192         struct tm *intm;
 193         time_t t;
 194         char out[32];
 195
 196         t = (time_t) intime->time + (intime->offset * 60);
 197         intm = gmtime(&t);
 198         strftime(out, sizeof(out), fmt, intm);
 199         fputs(out, fp);
 200 }
 201
 202 void
 203 printtimez(FILE *fp, const git_time *intime)
 204 {
 205         printtimeformat(fp, intime, "%Y-%m-%dT%H:%M:%SZ");
 206 }
 207
 208 void
 209 printtime(FILE *fp, const git_time *intime)
 210 {
 211         printtimeformat(fp, intime, "%a %b %e %T %Y");
 212 }
 213
 214 void
 215 printtimeshort(FILE *fp, const git_time *intime)
 216 {
 217         printtimeformat(fp, intime, "%Y-%m-%d %H:%M");
 218 }
 219
 220 void
 221 writeblobhtml(FILE *fp, const git_blob *blob)
 222 {
 223         xmlencode(fp, git_blob_rawcontent(blob), (size_t)git_blob_rawsize(blob));
 224 }
 225
 226 void
 227 printcommit(FILE *fp, struct commitinfo *ci)
 228 {
 229         /* TODO: show tag when commit has it */
 230         fprintf(fp, "<b>commit</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 231                 relpath, ci->oid, ci->oid);
 232
 233         if (ci->parentoid[0])
 234                 fprintf(fp, "<b>parent</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 235                         relpath, ci->parentoid, ci->parentoid);
 236
 237 #if 0
 238         if ((count = (int)git_commit_parentcount(commit)) > 1) {
 239                 fprintf(fp, "<b>Merge:</b>");
 240                 for (i = 0; i < count; i++) {
 241                         git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
 242                         fprintf(fp, " <a href=\"%scommit/%s.html\">%s</a>",
 243                                 relpath, buf, buf);
 244                 }
 245                 fputc('\n', fp);
 246         }
 247 #endif
 248         if (ci->author) {
 249                 fprintf(fp, "<b>Author:</b> ");
 250                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 251                 fprintf(fp, " &lt;<a href=\"mailto:");
 252                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 253                 fputs("\">", fp);
 254                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 255                 fputs("</a>&gt;\n<b>Date:</b>   ", fp);
 256                 printtime(fp, &(ci->author->when));
 257                 fputc('\n', fp);
 258         }
 259         fputc('\n', fp);
 260
 261         if (ci->msg)
 262                 xmlencode(fp, ci->msg, strlen(ci->msg));
 263
 264         fputc('\n', fp);
 265 }
 266
 267 void
 268 printshowfile(struct commitinfo *ci)
 269 {
 270         const git_diff_delta *delta;
 271         const git_diff_hunk *hunk;
 272         const git_diff_line *line;
 273         git_patch *patch;
 274         git_buf statsbuf;
 275         size_t ndeltas, nhunks, nhunklines;
 276         FILE *fp;
 277         size_t i, j, k;
 278         char path[PATH_MAX];
 279
 280         snprintf(path, sizeof(path), "commit/%s.html", ci->oid);
 281         /* check if file exists if so skip it */
 282         if (!access(path, F_OK))
 283                 return;
 284
 285         fp = efopen(path, "w+b");
 286         writeheader(fp);
 287         printcommit(fp, ci);
 288
 289         memset(&statsbuf, 0, sizeof(statsbuf));
 290
 291         /* diff stat */
 292         if (ci->stats) {
 293                 if (!git_diff_stats_to_buf(&statsbuf, ci->stats,
 294                     GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT, 80)) {
 295                         if (statsbuf.ptr && statsbuf.ptr[0]) {
 296                                 fprintf(fp, "<b>Diffstat:</b>\n");
 297                                 fputs(statsbuf.ptr, fp);
 298                         }
 299                 }
 300         }
 301
 302         fputs("<hr/>", fp);
 303
 304         ndeltas = git_diff_num_deltas(ci->diff);
 305         for (i = 0; i < ndeltas; i++) {
 306                 if (git_patch_from_diff(&patch, ci->diff, i)) {
 307                         git_patch_free(patch);
 308                         break; /* TODO: handle error */
 309                 }
 310
 311                 delta = git_patch_get_delta(patch);
 312                 fprintf(fp, "<b>diff --git a/<a href=\"%sfile/%s\">%s</a> b/<a href=\"%sfile/%s\">%s</a></b>\n",
 313                         relpath, delta->old_file.path, delta->old_file.path,
 314                         relpath, delta->new_file.path, delta->new_file.path);
 315
 316                 /* check binary data */
 317                 if (delta->flags & GIT_DIFF_FLAG_BINARY) {
 318                         fputs("Binary files differ\n", fp);
 319                         git_patch_free(patch);
 320                         continue;
 321                 }
 322
 323                 nhunks = git_patch_num_hunks(patch);
 324                 for (j = 0; j < nhunks; j++) {
 325                         if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
 326                                 break; /* TODO: handle error ? */
 327
 328                         fprintf(fp, "<span class=\"h\">%s</span>\n", hunk->header);
 329
 330                         for (k = 0; ; k++) {
 331                                 if (git_patch_get_line_in_hunk(&line, patch, j, k))
 332                                         break;
 333                                 if (line->old_lineno == -1)
 334                                         fprintf(fp, "<span class=\"i\"><a href=\"#h%zu-%zu\" id=\"h%zu-%zu\">+",
 335                                                 j, k, j, k);
 336                                 else if (line->new_lineno == -1)
 337                                         fprintf(fp, "<span class=\"d\"><a href=\"#h%zu-%zu\" id=\"h%zu-%zu\">-",
 338                                                 j, k, j, k);
 339                                 else
 340                                         fputc(' ', fp);
 341                                 xmlencode(fp, line->content, line->content_len);
 342                                 if (line->old_lineno == -1 || line->new_lineno == -1)
 343                                         fputs("</a></span>", fp);
 344                         }
 345                 }
 346                 git_patch_free(patch);
 347         }
 348         git_buf_free(&statsbuf);
 349
 350         writefooter(fp);
 351         fclose(fp);
 352         return;
 353 }
 354
 355 int
 356 writelog(FILE *fp)
 357 {
 358         struct commitinfo *ci;
 359         git_revwalk *w = NULL;
 360         git_oid id;
 361         size_t len;
 362         int ret = 0;
 363
 364         mkdir("commit", 0755);
 365
 366         git_revwalk_new(&w, repo);
 367         git_revwalk_push_head(w);
 368
 369         /* TODO: also make "expanded" log ? (with message body) */
 370         fputs("<table><thead>\n<tr><td align=\"right\">Age</td><td>Commit message</td><td>Author</td>"
 371               "<td align=\"right\">Files</td><td align=\"right\">+</td><td align=\"right\">-</td></tr>\n</thead><tbody>\n", fp);
 372         while (!git_revwalk_next(&id, w)) {
 373                 relpath = "";
 374
 375                 if (!(ci = commitinfo_getbyoid(&id)))
 376                         break;
 377
 378                 fputs("<tr><td align=\"right\">", fp);
 379                 if (ci->author)
 380                         printtimeshort(fp, &(ci->author->when));
 381                 fputs("</td><td>", fp);
 382                 if (ci->summary) {
 383                         fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 384                         if ((len = strlen(ci->summary)) > 79) {
 385                                 xmlencode(fp, ci->summary, 76);
 386                                 fputs("...", fp);
 387                         } else {
 388                                 xmlencode(fp, ci->summary, len);
 389                         }
 390                         fputs("</a>", fp);
 391                 }
 392                 fputs("</td><td>", fp);
 393                 if (ci->author)
 394                         xmlencode(fp, ci->author->name, strlen(ci->author->name));
 395                 fputs("</td><td align=\"right\">", fp);
 396                 fprintf(fp, "%zu", ci->filecount);
 397                 fputs("</td><td align=\"right\">", fp);
 398                 fprintf(fp, "+%zu", ci->addcount);
 399                 fputs("</td><td align=\"right\">", fp);
 400                 fprintf(fp, "-%zu", ci->delcount);
 401                 fputs("</td></tr>\n", fp);
 402
 403                 relpath = "../";
 404                 printshowfile(ci);
 405
 406                 commitinfo_free(ci);
 407         }
 408         fprintf(fp, "</tbody></table>");
 409
 410         git_revwalk_free(w);
 411         relpath = "";
 412
 413         return ret;
 414 }
 415
 416 void
 417 printcommitatom(FILE *fp, struct commitinfo *ci)
 418 {
 419         fputs("<entry>\n", fp);
 420
 421         fprintf(fp, "<id>%s</id>\n", ci->oid);
 422         if (ci->author) {
 423                 fputs("<updated>", fp);
 424                 printtimez(fp, &(ci->author->when));
 425                 fputs("</updated>\n", fp);
 426         }
 427         if (ci->summary) {
 428                 fputs("<title type=\"text\">", fp);
 429                 xmlencode(fp, ci->summary, strlen(ci->summary));
 430                 fputs("</title>\n", fp);
 431         }
 432
 433         fputs("<content type=\"text\">", fp);
 434         fprintf(fp, "commit %s\n", ci->oid);
 435         if (ci->parentoid[0])
 436                 fprintf(fp, "parent %s\n", ci->parentoid);
 437
 438 #if 0
 439         if ((count = (int)git_commit_parentcount(commit)) > 1) {
 440                 fprintf(fp, "Merge:");
 441                 for (i = 0; i < count; i++) {
 442                         git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
 443                         fprintf(fp, " %s", buf);
 444                 }
 445                 fputc('\n', fp);
 446         }
 447 #endif
 448
 449         if (ci->author) {
 450                 fprintf(fp, "Author: ");
 451                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 452                 fprintf(fp, " &lt;");
 453                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 454                 fprintf(fp, "&gt;\nDate:   ");
 455                 printtime(fp, &(ci->author->when));
 456         }
 457         fputc('\n', fp);
 458
 459         if (ci->msg)
 460                 xmlencode(fp, ci->msg, strlen(ci->msg));
 461         fputs("\n</content>\n", fp);
 462         if (ci->author) {
 463                 fputs("<author><name>", fp);
 464                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 465                 fputs("</name>\n<email>", fp);
 466                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 467                 fputs("</email>\n</author>\n", fp);
 468         }
 469         fputs("</entry>\n", fp);
 470 }
 471
 472 int
 473 writeatom(FILE *fp)
 474 {
 475         struct commitinfo *ci;
 476         git_revwalk *w = NULL;
 477         git_oid id;
 478         size_t i, m = 100; /* max */
 479
 480         fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n", fp);
 481         fputs("<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
 482         xmlencode(fp, name, strlen(name));
 483         fputs(", branch master</title>\n<subtitle>", fp);
 484
 485         xmlencode(fp, description, strlen(description));
 486         fputs("</subtitle>\n", fp);
 487
 488         git_revwalk_new(&w, repo);
 489         git_revwalk_push_head(w);
 490
 491         for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
 492                 if (!(ci = commitinfo_getbyoid(&id)))
 493                         break;
 494                 printcommitatom(fp, ci);
 495                 commitinfo_free(ci);
 496         }
 497         git_revwalk_free(w);
 498
 499         fputs("</feed>", fp);
 500
 501         return 0;
 502 }
 503
 504 int
 505 writefiles(FILE *fp)
 506 {
 507         const git_index_entry *entry;
 508         git_index *index;
 509         size_t count, i;
 510
 511         fputs("<table><thead>\n"
 512               "<tr><td>Mode</td><td>Name</td><td align=\"right\">Size</td></tr>\n"
 513               "</thead><tbody>\n", fp);
 514
 515         git_repository_index(&index, repo);
 516         count = git_index_entrycount(index);
 517
 518         for (i = 0; i < count; i++) {
 519                 entry = git_index_get_byindex(index, i);
 520                 fputs("<tr><td>", fp);
 521                 fprintf(fp, "%u", entry->mode); /* TODO: fancy print, like: "-rw-r--r--" */
 522                 fprintf(fp, "</td><td><a href=\"%sfile/", relpath);
 523                 xmlencode(fp, entry->path, strlen(entry->path));
 524                 fputs("\">", fp);
 525                 xmlencode(fp, entry->path, strlen(entry->path));
 526                 fputs("</a></td><td align=\"right\">", fp);
 527                 fprintf(fp, "%" PRIu64, entry->file_size);
 528                 fputs("</td></tr>\n", fp);
 529         }
 530
 531         fputs("</tbody></table>", fp);
 532
 533         return 0;
 534 }
 535
 536 int
 537 main(int argc, char *argv[])
 538 {
 539         git_object *obj = NULL;
 540         const git_error *e = NULL;
 541         FILE *fp, *fpread;
 542         char path[PATH_MAX], *p;
 543         int status;
 544
 545         if (argc != 2) {
 546                 fprintf(stderr, "%s <repodir>\n", argv[0]);
 547                 return 1;
 548         }
 549         repodir = argv[1];
 550
 551         git_libgit2_init();
 552
 553         if ((status = git_repository_open(&repo, repodir)) < 0) {
 554                 e = giterr_last();
 555                 fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
 556                 return status;
 557         }
 558
 559         /* use directory name as name */
 560         p = xbasename(repodir);
 561         snprintf(name, sizeof(name), "%s", p);
 562         free(p);
 563
 564         /* read description or .git/description */
 565         snprintf(path, sizeof(path), "%s%s%s",
 566                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 567         if (!(fpread = fopen(path, "r+b"))) {
 568                 snprintf(path, sizeof(path), "%s%s%s",
 569                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 570                 fpread = fopen(path, "r+b");
 571         }
 572         if (fpread) {
 573                 if (!fgets(description, sizeof(description), fpread))
 574                         description[0] = '\0';
 575                 fclose(fpread);
 576         }
 577
 578         /* check LICENSE */
 579         haslicense = !git_revparse_single(&obj, repo, "HEAD:LICENSE");
 580         /* check README */
 581         hasreadme = !git_revparse_single(&obj, repo, "HEAD:README");
 582
 583         /* read LICENSE */
 584         if (!git_revparse_single(&obj, repo, "HEAD:LICENSE")) {
 585                 fp = efopen("license.html", "w+b");
 586                 writeheader(fp);
 587                 writeblobhtml(fp, (git_blob *)obj);
 588                 if (ferror(fp))
 589                         err(1, "fwrite");
 590                 writefooter(fp);
 591
 592                 fclose(fp);
 593         }
 594
 595         /* read README */
 596         if (!git_revparse_single(&obj, repo, "HEAD:README")) {
 597                 fp = efopen("readme.html", "w+b");
 598                 writeheader(fp);
 599                 writeblobhtml(fp, (git_blob *)obj);
 600                 if (ferror(fp))
 601                         err(1, "fwrite");
 602                 writefooter(fp);
 603                 fclose(fp);
 604         }
 605
 606         fp = efopen("log.html", "w+b");
 607         writeheader(fp);
 608         writelog(fp);
 609         writefooter(fp);
 610         fclose(fp);
 611
 612         fp = efopen("files.html", "w+b");
 613         writeheader(fp);
 614         writefiles(fp);
 615         writefooter(fp);
 616         fclose(fp);
 617
 618         /* Atom feed */
 619         fp = efopen("atom.xml", "w+b");
 620         writeatom(fp);
 621         fclose(fp);
 622
 623         /* cleanup */
 624         git_repository_free(repo);
 625         git_libgit2_shutdown();
 626
 627         return 0;
 628 }