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\n", fp);
 120         fprintf(fp, "<table><tr><td><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /></td>"
 121                 "<td><h1>%s</h1><span class=\"desc\">%s</span></td></tr><tr><td></td><td>\n",
 122                 relpath, name, description);
 123         fprintf(fp, "<a href=\"%slog.html\">Log</a> | ", relpath);
 124         fprintf(fp, "<a href=\"%sfiles.html\">Files</a>", relpath);
 125         if (hasreadme)
 126                 fprintf(fp, " | <a href=\"%sreadme.html\">README</a>", relpath);
 127         if (haslicense)
 128                 fprintf(fp, " | <a href=\"%slicense.html\">LICENSE</a>", relpath);
 129         fputs("</td></tr></table>\n<hr/><div id=\"content\">\n", fp);
 130
 131         return 0;
 132 }
 133
 134 int
 135 writefooter(FILE *fp)
 136 {
 137         return !fputs("</div></body>\n</html>", fp);
 138 }
 139
 140 FILE *
 141 efopen(const char *name, const char *flags)
 142 {
 143         FILE *fp;
 144
 145         if (!(fp = fopen(name, flags)))
 146                 err(1, "fopen");
 147
 148         return fp;
 149 }
 150
 151 /* Escape characters below as HTML 2.0 / XML 1.0. */
 152 void
 153 xmlencode(FILE *fp, const char *s, size_t len)
 154 {
 155         size_t i;
 156
 157         for (i = 0; *s && i < len; s++, i++) {
 158                 switch(*s) {
 159                 case '<':  fputs("&lt;",   fp); break;
 160                 case '>':  fputs("&gt;",   fp); break;
 161                 case '\'': fputs("&apos;", fp); break;
 162                 case '&':  fputs("&amp;",  fp); break;
 163                 case '"':  fputs("&quot;", fp); break;
 164                 default:   fputc(*s, fp);
 165                 }
 166         }
 167 }
 168
 169 /* Some implementations of basename(3) return a pointer to a static
 170  * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
 171  * This is a wrapper function that is compatible with both versions.
 172  * The program will error out if basename(3) failed, this can only happen
 173  * with the OpenBSD version. */
 174 char *
 175 xbasename(const char *path)
 176 {
 177         char *p, *b;
 178
 179         if (!(p = strdup(path)))
 180                 err(1, "strdup");
 181         if (!(b = basename(p)))
 182                 err(1, "basename");
 183         if (!(b = strdup(b)))
 184                 err(1, "strdup");
 185         free(p);
 186
 187         return b;
 188 }
 189
 190 void
 191 printtimeformat(FILE *fp, const git_time *intime, const char *fmt)
 192 {
 193         struct tm *intm;
 194         time_t t;
 195         char out[32];
 196
 197         t = (time_t) intime->time + (intime->offset * 60);
 198         intm = gmtime(&t);
 199         strftime(out, sizeof(out), fmt, intm);
 200         fputs(out, fp);
 201 }
 202
 203 void
 204 printtimez(FILE *fp, const git_time *intime)
 205 {
 206         printtimeformat(fp, intime, "%Y-%m-%dT%H:%M:%SZ");
 207 }
 208
 209 void
 210 printtime(FILE *fp, const git_time *intime)
 211 {
 212         printtimeformat(fp, intime, "%a %b %e %T %Y");
 213 }
 214
 215 void
 216 printtimeshort(FILE *fp, const git_time *intime)
 217 {
 218         printtimeformat(fp, intime, "%Y-%m-%d %H:%M");
 219 }
 220
 221 void
 222 writeblobhtml(FILE *fp, const git_blob *blob)
 223 {
 224         xmlencode(fp, git_blob_rawcontent(blob), (size_t)git_blob_rawsize(blob));
 225 }
 226
 227 void
 228 printcommit(FILE *fp, struct commitinfo *ci)
 229 {
 230         /* TODO: show tag when commit has it */
 231         fprintf(fp, "<b>commit</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 232                 relpath, ci->oid, ci->oid);
 233
 234         if (ci->parentoid[0])
 235                 fprintf(fp, "<b>parent</b> <a href=\"%scommit/%s.html\">%s</a>\n",
 236                         relpath, ci->parentoid, ci->parentoid);
 237
 238 #if 0
 239         if ((count = (int)git_commit_parentcount(commit)) > 1) {
 240                 fprintf(fp, "<b>Merge:</b>");
 241                 for (i = 0; i < count; i++) {
 242                         git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
 243                         fprintf(fp, " <a href=\"%scommit/%s.html\">%s</a>",
 244                                 relpath, buf, buf);
 245                 }
 246                 fputc('\n', fp);
 247         }
 248 #endif
 249         if (ci->author) {
 250                 fprintf(fp, "<b>Author:</b> ");
 251                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 252                 fprintf(fp, " &lt;<a href=\"mailto:");
 253                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 254                 fputs("\">", fp);
 255                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 256                 fputs("</a>&gt;\n<b>Date:</b>   ", fp);
 257                 printtime(fp, &(ci->author->when));
 258                 fputc('\n', fp);
 259         }
 260         fputc('\n', fp);
 261
 262         if (ci->msg)
 263                 xmlencode(fp, ci->msg, strlen(ci->msg));
 264
 265         fputc('\n', fp);
 266 }
 267
 268 void
 269 printshowfile(struct commitinfo *ci)
 270 {
 271         const git_diff_delta *delta;
 272         const git_diff_hunk *hunk;
 273         const git_diff_line *line;
 274         git_patch *patch;
 275         git_buf statsbuf;
 276         size_t ndeltas, nhunks, nhunklines;
 277         FILE *fp;
 278         size_t i, j, k;
 279         char path[PATH_MAX];
 280
 281         snprintf(path, sizeof(path), "commit/%s.html", ci->oid);
 282         /* check if file exists if so skip it */
 283         if (!access(path, F_OK))
 284                 return;
 285
 286         fp = efopen(path, "w+b");
 287         writeheader(fp);
 288         fputs("<pre>\n", fp);
 289         printcommit(fp, ci);
 290
 291         memset(&statsbuf, 0, sizeof(statsbuf));
 292
 293         /* diff stat */
 294         if (ci->stats) {
 295                 if (!git_diff_stats_to_buf(&statsbuf, ci->stats,
 296                     GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT, 80)) {
 297                         if (statsbuf.ptr && statsbuf.ptr[0]) {
 298                                 fprintf(fp, "<b>Diffstat:</b>\n");
 299                                 fputs(statsbuf.ptr, fp);
 300                         }
 301                 }
 302         }
 303
 304         fputs("<hr/>", fp);
 305
 306         ndeltas = git_diff_num_deltas(ci->diff);
 307         for (i = 0; i < ndeltas; i++) {
 308                 if (git_patch_from_diff(&patch, ci->diff, i)) {
 309                         git_patch_free(patch);
 310                         break; /* TODO: handle error */
 311                 }
 312
 313                 delta = git_patch_get_delta(patch);
 314                 fprintf(fp, "<b>diff --git a/<a href=\"%sfile/%s\">%s</a> b/<a href=\"%sfile/%s\">%s</a></b>\n",
 315                         relpath, delta->old_file.path, delta->old_file.path,
 316                         relpath, delta->new_file.path, delta->new_file.path);
 317
 318                 /* check binary data */
 319                 if (delta->flags & GIT_DIFF_FLAG_BINARY) {
 320                         fputs("Binary files differ\n", fp);
 321                         git_patch_free(patch);
 322                         continue;
 323                 }
 324
 325                 nhunks = git_patch_num_hunks(patch);
 326                 for (j = 0; j < nhunks; j++) {
 327                         if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
 328                                 break; /* TODO: handle error ? */
 329
 330                         fprintf(fp, "<span class=\"h\">%s</span>\n", hunk->header);
 331
 332                         for (k = 0; ; k++) {
 333                                 if (git_patch_get_line_in_hunk(&line, patch, j, k))
 334                                         break;
 335                                 if (line->old_lineno == -1)
 336                                         fprintf(fp, "<span class=\"i\"><a href=\"#h%zu-%zu\" id=\"h%zu-%zu\">+",
 337                                                 j, k, j, k);
 338                                 else if (line->new_lineno == -1)
 339                                         fprintf(fp, "<span class=\"d\"><a href=\"#h%zu-%zu\" id=\"h%zu-%zu\">-",
 340                                                 j, k, j, k);
 341                                 else
 342                                         fputc(' ', fp);
 343                                 xmlencode(fp, line->content, line->content_len);
 344                                 if (line->old_lineno == -1 || line->new_lineno == -1)
 345                                         fputs("</a></span>", fp);
 346                         }
 347                 }
 348                 git_patch_free(patch);
 349         }
 350         git_buf_free(&statsbuf);
 351
 352         fputs( "</pre>\n", fp);
 353         writefooter(fp);
 354         fclose(fp);
 355         return;
 356 }
 357
 358 int
 359 writelog(FILE *fp)
 360 {
 361         struct commitinfo *ci;
 362         git_revwalk *w = NULL;
 363         git_oid id;
 364         size_t len;
 365         int ret = 0;
 366
 367         mkdir("commit", 0755);
 368
 369         git_revwalk_new(&w, repo);
 370         git_revwalk_push_head(w);
 371
 372         /* TODO: also make "expanded" log ? (with message body) */
 373         fputs("<table><thead>\n<tr><td align=\"right\">Age</td><td>Commit message</td><td>Author</td>"
 374               "<td align=\"right\">Files</td><td align=\"right\">+</td><td align=\"right\">-</td></tr>\n</thead><tbody>\n", fp);
 375         while (!git_revwalk_next(&id, w)) {
 376                 relpath = "";
 377
 378                 if (!(ci = commitinfo_getbyoid(&id)))
 379                         break;
 380
 381                 fputs("<tr><td align=\"right\">", fp);
 382                 if (ci->author)
 383                         printtimeshort(fp, &(ci->author->when));
 384                 fputs("</td><td>", fp);
 385                 if (ci->summary) {
 386                         fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
 387                         if ((len = strlen(ci->summary)) > 79) {
 388                                 xmlencode(fp, ci->summary, 76);
 389                                 fputs("...", fp);
 390                         } else {
 391                                 xmlencode(fp, ci->summary, len);
 392                         }
 393                         fputs("</a>", fp);
 394                 }
 395                 fputs("</td><td>", fp);
 396                 if (ci->author)
 397                         xmlencode(fp, ci->author->name, strlen(ci->author->name));
 398                 fputs("</td><td align=\"right\">", fp);
 399                 fprintf(fp, "%zu", ci->filecount);
 400                 fputs("</td><td align=\"right\">", fp);
 401                 fprintf(fp, "+%zu", ci->addcount);
 402                 fputs("</td><td align=\"right\">", fp);
 403                 fprintf(fp, "-%zu", ci->delcount);
 404                 fputs("</td></tr>\n", fp);
 405
 406                 relpath = "../";
 407                 printshowfile(ci);
 408
 409                 commitinfo_free(ci);
 410         }
 411         fprintf(fp, "</tbody></table>");
 412
 413         git_revwalk_free(w);
 414         relpath = "";
 415
 416         return ret;
 417 }
 418
 419 void
 420 printcommitatom(FILE *fp, struct commitinfo *ci)
 421 {
 422         fputs("<entry>\n", fp);
 423
 424         fprintf(fp, "<id>%s</id>\n", ci->oid);
 425         if (ci->author) {
 426                 fputs("<updated>", fp);
 427                 printtimez(fp, &(ci->author->when));
 428                 fputs("</updated>\n", fp);
 429         }
 430         if (ci->summary) {
 431                 fputs("<title type=\"text\">", fp);
 432                 xmlencode(fp, ci->summary, strlen(ci->summary));
 433                 fputs("</title>\n", fp);
 434         }
 435
 436         fputs("<content type=\"text\">", fp);
 437         fprintf(fp, "commit %s\n", ci->oid);
 438         if (ci->parentoid[0])
 439                 fprintf(fp, "parent %s\n", ci->parentoid);
 440
 441 #if 0
 442         if ((count = (int)git_commit_parentcount(commit)) > 1) {
 443                 fprintf(fp, "Merge:");
 444                 for (i = 0; i < count; i++) {
 445                         git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
 446                         fprintf(fp, " %s", buf);
 447                 }
 448                 fputc('\n', fp);
 449         }
 450 #endif
 451
 452         if (ci->author) {
 453                 fprintf(fp, "Author: ");
 454                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 455                 fprintf(fp, " &lt;");
 456                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 457                 fprintf(fp, "&gt;\nDate:   ");
 458                 printtime(fp, &(ci->author->when));
 459         }
 460         fputc('\n', fp);
 461
 462         if (ci->msg)
 463                 xmlencode(fp, ci->msg, strlen(ci->msg));
 464         fputs("\n</content>\n", fp);
 465         if (ci->author) {
 466                 fputs("<author><name>", fp);
 467                 xmlencode(fp, ci->author->name, strlen(ci->author->name));
 468                 fputs("</name>\n<email>", fp);
 469                 xmlencode(fp, ci->author->email, strlen(ci->author->email));
 470                 fputs("</email>\n</author>\n", fp);
 471         }
 472         fputs("</entry>\n", fp);
 473 }
 474
 475 int
 476 writeatom(FILE *fp)
 477 {
 478         struct commitinfo *ci;
 479         git_revwalk *w = NULL;
 480         git_oid id;
 481         size_t i, m = 100; /* max */
 482
 483         fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n", fp);
 484         fputs("<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
 485         xmlencode(fp, name, strlen(name));
 486         fputs(", branch master</title>\n<subtitle>", fp);
 487
 488         xmlencode(fp, description, strlen(description));
 489         fputs("</subtitle>\n", fp);
 490
 491         git_revwalk_new(&w, repo);
 492         git_revwalk_push_head(w);
 493
 494         for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
 495                 if (!(ci = commitinfo_getbyoid(&id)))
 496                         break;
 497                 printcommitatom(fp, ci);
 498                 commitinfo_free(ci);
 499         }
 500         git_revwalk_free(w);
 501
 502         fputs("</feed>", fp);
 503
 504         return 0;
 505 }
 506
 507 int
 508 writefiles(FILE *fp)
 509 {
 510         const git_index_entry *entry;
 511         git_index *index;
 512         size_t count, i;
 513
 514         fputs("<table><thead>\n"
 515               "<tr><td>Mode</td><td>Name</td><td align=\"right\">Size</td></tr>\n"
 516               "</thead><tbody>\n", fp);
 517
 518         git_repository_index(&index, repo);
 519         count = git_index_entrycount(index);
 520
 521         for (i = 0; i < count; i++) {
 522                 entry = git_index_get_byindex(index, i);
 523                 fputs("<tr><td>", fp);
 524                 fprintf(fp, "%u", entry->mode); /* TODO: fancy print, like: "-rw-r--r--" */
 525                 fprintf(fp, "</td><td><a href=\"%sfile/", relpath);
 526                 xmlencode(fp, entry->path, strlen(entry->path));
 527                 fputs("\">", fp);
 528                 xmlencode(fp, entry->path, strlen(entry->path));
 529                 fputs("</a></td><td align=\"right\">", fp);
 530                 fprintf(fp, "%" PRIu64, entry->file_size);
 531                 fputs("</td></tr>\n", fp);
 532         }
 533
 534         fputs("</tbody></table>", fp);
 535
 536         return 0;
 537 }
 538
 539 int
 540 main(int argc, char *argv[])
 541 {
 542         git_object *obj = NULL;
 543         const git_error *e = NULL;
 544         FILE *fp, *fpread;
 545         char path[PATH_MAX], *p;
 546         int status;
 547
 548         if (argc != 2) {
 549                 fprintf(stderr, "%s <repodir>\n", argv[0]);
 550                 return 1;
 551         }
 552         repodir = argv[1];
 553
 554         git_libgit2_init();
 555
 556         if ((status = git_repository_open(&repo, repodir)) < 0) {
 557                 e = giterr_last();
 558                 fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
 559                 return status;
 560         }
 561
 562         /* use directory name as name */
 563         p = xbasename(repodir);
 564         snprintf(name, sizeof(name), "%s", p);
 565         free(p);
 566
 567         /* read description or .git/description */
 568         snprintf(path, sizeof(path), "%s%s%s",
 569                 repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
 570         if (!(fpread = fopen(path, "r+b"))) {
 571                 snprintf(path, sizeof(path), "%s%s%s",
 572                         repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
 573                 fpread = fopen(path, "r+b");
 574         }
 575         if (fpread) {
 576                 if (!fgets(description, sizeof(description), fpread))
 577                         description[0] = '\0';
 578                 fclose(fpread);
 579         }
 580
 581         /* check LICENSE */
 582         haslicense = !git_revparse_single(&obj, repo, "HEAD:LICENSE");
 583         /* check README */
 584         hasreadme = !git_revparse_single(&obj, repo, "HEAD:README");
 585
 586         /* read LICENSE */
 587         if (!git_revparse_single(&obj, repo, "HEAD:LICENSE")) {
 588                 fp = efopen("license.html", "w+b");
 589                 writeheader(fp);
 590                 fputs("<pre>\n", fp);
 591                 writeblobhtml(fp, (git_blob *)obj);
 592                 if (ferror(fp))
 593                         err(1, "fwrite");
 594                 fputs("</pre>\n", fp);
 595                 writefooter(fp);
 596
 597                 fclose(fp);
 598         }
 599
 600         /* read README */
 601         if (!git_revparse_single(&obj, repo, "HEAD:README")) {
 602                 fp = efopen("readme.html", "w+b");
 603                 writeheader(fp);
 604                 fputs("<pre>\n", fp);
 605                 writeblobhtml(fp, (git_blob *)obj);
 606                 if (ferror(fp))
 607                         err(1, "fwrite");
 608                 fputs("</pre>\n", fp);
 609                 writefooter(fp);
 610                 fclose(fp);
 611         }
 612
 613         fp = efopen("log.html", "w+b");
 614         writeheader(fp);
 615         writelog(fp);
 616         writefooter(fp);
 617         fclose(fp);
 618
 619         fp = efopen("files.html", "w+b");
 620         writeheader(fp);
 621         writefiles(fp);
 622         writefooter(fp);
 623         fclose(fp);
 624
 625         /* Atom feed */
 626         fp = efopen("atom.xml", "w+b");
 627         writeatom(fp);
 628         fclose(fp);
 629
 630         /* cleanup */
 631         git_repository_free(repo);
 632         git_libgit2_shutdown();
 633
 634         return 0;
 635 }