stagit
Personal fork of stagit
git clone git://mccd.space/stagit
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stagit.c (36359B)
1 #include <sys/stat.h>
2 #include <sys/types.h>
3
4 #include <err.h>
5 #include <errno.h>
6 #include <libgen.h>
7 #include <limits.h>
8 #include <stdint.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include <time.h>
13 #include <unistd.h>
14
15 #include <git2.h>
16
17 #include "compat.h"
18
19 #define LEN(s) (sizeof(s)/sizeof(*s))
20
21 struct deltainfo {
22 git_patch *patch;
23
24 size_t addcount;
25 size_t delcount;
26 };
27
28 struct commitinfo {
29 const git_oid *id;
30
31 char oid[GIT_OID_HEXSZ + 1];
32 char parentoid[GIT_OID_HEXSZ + 1];
33
34 const git_signature *author;
35 const git_signature *committer;
36 const char *summary;
37 const char *msg;
38
39 git_diff *diff;
40 git_commit *commit;
41 git_commit *parent;
42 git_tree *commit_tree;
43 git_tree *parent_tree;
44
45 size_t addcount;
46 size_t delcount;
47 size_t filecount;
48
49 struct deltainfo **deltas;
50 size_t ndeltas;
51 };
52
53 /* reference and associated data for sorting */
54 struct referenceinfo {
55 struct git_reference *ref;
56 struct commitinfo *ci;
57 };
58
59 static git_repository *repo;
60
61 static const char *baseurl = ""; /* base URL to make absolute RSS/Atom URI */
62 static const char *relpath = "";
63 static const char *repodir;
64
65 static char *name = "";
66 static char *strippedname = "";
67 static char description[255];
68 static char cloneurl[1024];
69 static char *submodules;
70 static char *licensefiles[] = { "HEAD:LICENSE", "HEAD:LICENSE.md", "HEAD:LICENSE.txt", "HEAD:COPYING" };
71 static char *license;
72 static char *readmefiles[] = { "HEAD:README", "HEAD:README.md" };
73 static char *readme;
74 static long long nlogcommits = -1; /* -1 indicates not used */
75
76 /* cache */
77 static git_oid lastoid;
78 static char lastoidstr[GIT_OID_HEXSZ + 2]; /* id + newline + NUL byte */
79 static FILE *rcachefp, *wcachefp;
80 static const char *cachefile;
81
82 /* Handle read or write errors for a FILE * stream */
83 void
84 checkfileerror(FILE *fp, const char *name, int mode)
85 {
86 if (mode == 'r' && ferror(fp))
87 errx(1, "read error: %s", name);
88 else if (mode == 'w' && (fflush(fp) || ferror(fp)))
89 errx(1, "write error: %s", name);
90 }
91
92 void
93 joinpath(char *buf, size_t bufsiz, const char *path, const char *path2)
94 {
95 int r;
96
97 r = snprintf(buf, bufsiz, "%s%s%s",
98 path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
99 if (r < 0 || (size_t)r >= bufsiz)
100 errx(1, "path truncated: '%s%s%s'",
101 path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
102 }
103
104 void
105 deltainfo_free(struct deltainfo *di)
106 {
107 if (!di)
108 return;
109 git_patch_free(di->patch);
110 memset(di, 0, sizeof(*di));
111 free(di);
112 }
113
114 int
115 commitinfo_getstats(struct commitinfo *ci)
116 {
117 struct deltainfo *di;
118 git_diff_options opts;
119 git_diff_find_options fopts;
120 const git_diff_delta *delta;
121 const git_diff_hunk *hunk;
122 const git_diff_line *line;
123 git_patch *patch = NULL;
124 size_t ndeltas, nhunks, nhunklines;
125 size_t i, j, k;
126
127 if (git_tree_lookup(&(ci->commit_tree), repo, git_commit_tree_id(ci->commit)))
128 goto err;
129 if (!git_commit_parent(&(ci->parent), ci->commit, 0)) {
130 if (git_tree_lookup(&(ci->parent_tree), repo, git_commit_tree_id(ci->parent))) {
131 ci->parent = NULL;
132 ci->parent_tree = NULL;
133 }
134 }
135
136 git_diff_init_options(&opts, GIT_DIFF_OPTIONS_VERSION);
137 opts.flags |= GIT_DIFF_DISABLE_PATHSPEC_MATCH |
138 GIT_DIFF_IGNORE_SUBMODULES |
139 GIT_DIFF_INCLUDE_TYPECHANGE;
140 if (git_diff_tree_to_tree(&(ci->diff), repo, ci->parent_tree, ci->commit_tree, &opts))
141 goto err;
142
143 if (git_diff_find_init_options(&fopts, GIT_DIFF_FIND_OPTIONS_VERSION))
144 goto err;
145 /* find renames and copies, exact matches (no heuristic) for renames. */
146 fopts.flags |= GIT_DIFF_FIND_RENAMES | GIT_DIFF_FIND_COPIES |
147 GIT_DIFF_FIND_EXACT_MATCH_ONLY;
148 if (git_diff_find_similar(ci->diff, &fopts))
149 goto err;
150
151 ndeltas = git_diff_num_deltas(ci->diff);
152 if (ndeltas && !(ci->deltas = calloc(ndeltas, sizeof(struct deltainfo *))))
153 err(1, "calloc");
154
155 for (i = 0; i < ndeltas; i++) {
156 if (git_patch_from_diff(&patch, ci->diff, i))
157 goto err;
158
159 if (!(di = calloc(1, sizeof(struct deltainfo))))
160 err(1, "calloc");
161 di->patch = patch;
162 ci->deltas[i] = di;
163
164 delta = git_patch_get_delta(patch);
165
166 /* skip stats for binary data */
167 if (delta->flags & GIT_DIFF_FLAG_BINARY)
168 continue;
169
170 nhunks = git_patch_num_hunks(patch);
171 for (j = 0; j < nhunks; j++) {
172 if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
173 break;
174 for (k = 0; ; k++) {
175 if (git_patch_get_line_in_hunk(&line, patch, j, k))
176 break;
177 if (line->old_lineno == -1) {
178 di->addcount++;
179 ci->addcount++;
180 } else if (line->new_lineno == -1) {
181 di->delcount++;
182 ci->delcount++;
183 }
184 }
185 }
186 }
187 ci->ndeltas = i;
188 ci->filecount = i;
189
190 return 0;
191
192 err:
193 git_diff_free(ci->diff);
194 ci->diff = NULL;
195 git_tree_free(ci->commit_tree);
196 ci->commit_tree = NULL;
197 git_tree_free(ci->parent_tree);
198 ci->parent_tree = NULL;
199 git_commit_free(ci->parent);
200 ci->parent = NULL;
201
202 if (ci->deltas)
203 for (i = 0; i < ci->ndeltas; i++)
204 deltainfo_free(ci->deltas[i]);
205 free(ci->deltas);
206 ci->deltas = NULL;
207 ci->ndeltas = 0;
208 ci->addcount = 0;
209 ci->delcount = 0;
210 ci->filecount = 0;
211
212 return -1;
213 }
214
215 void
216 commitinfo_free(struct commitinfo *ci)
217 {
218 size_t i;
219
220 if (!ci)
221 return;
222 if (ci->deltas)
223 for (i = 0; i < ci->ndeltas; i++)
224 deltainfo_free(ci->deltas[i]);
225
226 free(ci->deltas);
227 git_diff_free(ci->diff);
228 git_tree_free(ci->commit_tree);
229 git_tree_free(ci->parent_tree);
230 git_commit_free(ci->commit);
231 git_commit_free(ci->parent);
232 memset(ci, 0, sizeof(*ci));
233 free(ci);
234 }
235
236 struct commitinfo *
237 commitinfo_getbyoid(const git_oid *id)
238 {
239 struct commitinfo *ci;
240
241 if (!(ci = calloc(1, sizeof(struct commitinfo))))
242 err(1, "calloc");
243
244 if (git_commit_lookup(&(ci->commit), repo, id))
245 goto err;
246 ci->id = id;
247
248 git_oid_tostr(ci->oid, sizeof(ci->oid), git_commit_id(ci->commit));
249 git_oid_tostr(ci->parentoid, sizeof(ci->parentoid), git_commit_parent_id(ci->commit, 0));
250
251 ci->author = git_commit_author(ci->commit);
252 ci->committer = git_commit_committer(ci->commit);
253 ci->summary = git_commit_summary(ci->commit);
254 ci->msg = git_commit_message(ci->commit);
255
256 return ci;
257
258 err:
259 commitinfo_free(ci);
260
261 return NULL;
262 }
263
264 int
265 refs_cmp(const void *v1, const void *v2)
266 {
267 const struct referenceinfo *r1 = v1, *r2 = v2;
268 time_t t1, t2;
269 int r;
270
271 if ((r = git_reference_is_tag(r1->ref) - git_reference_is_tag(r2->ref)))
272 return r;
273
274 t1 = r1->ci->author ? r1->ci->author->when.time : 0;
275 t2 = r2->ci->author ? r2->ci->author->when.time : 0;
276 if ((r = t1 > t2 ? -1 : (t1 == t2 ? 0 : 1)))
277 return r;
278
279 return strcmp(git_reference_shorthand(r1->ref),
280 git_reference_shorthand(r2->ref));
281 }
282
283 int
284 getrefs(struct referenceinfo **pris, size_t *prefcount)
285 {
286 struct referenceinfo *ris = NULL;
287 struct commitinfo *ci = NULL;
288 git_reference_iterator *it = NULL;
289 const git_oid *id = NULL;
290 git_object *obj = NULL;
291 git_reference *dref = NULL, *r, *ref = NULL;
292 size_t i, refcount;
293
294 *pris = NULL;
295 *prefcount = 0;
296
297 if (git_reference_iterator_new(&it, repo))
298 return -1;
299
300 for (refcount = 0; !git_reference_next(&ref, it); ) {
301 if (!git_reference_is_branch(ref) && !git_reference_is_tag(ref)) {
302 git_reference_free(ref);
303 ref = NULL;
304 continue;
305 }
306
307 switch (git_reference_type(ref)) {
308 case GIT_REF_SYMBOLIC:
309 if (git_reference_resolve(&dref, ref))
310 goto err;
311 r = dref;
312 break;
313 case GIT_REF_OID:
314 r = ref;
315 break;
316 default:
317 continue;
318 }
319 if (!git_reference_target(r) ||
320 git_reference_peel(&obj, r, GIT_OBJ_ANY))
321 goto err;
322 if (!(id = git_object_id(obj)))
323 goto err;
324 if (!(ci = commitinfo_getbyoid(id)))
325 break;
326
327 if (!(ris = reallocarray(ris, refcount + 1, sizeof(*ris))))
328 err(1, "realloc");
329 ris[refcount].ci = ci;
330 ris[refcount].ref = r;
331 refcount++;
332
333 git_object_free(obj);
334 obj = NULL;
335 git_reference_free(dref);
336 dref = NULL;
337 }
338 git_reference_iterator_free(it);
339
340 /* sort by type, date then shorthand name */
341 qsort(ris, refcount, sizeof(*ris), refs_cmp);
342
343 *pris = ris;
344 *prefcount = refcount;
345
346 return 0;
347
348 err:
349 git_object_free(obj);
350 git_reference_free(dref);
351 commitinfo_free(ci);
352 for (i = 0; i < refcount; i++) {
353 commitinfo_free(ris[i].ci);
354 git_reference_free(ris[i].ref);
355 }
356 free(ris);
357
358 return -1;
359 }
360
361 FILE *
362 efopen(const char *filename, const char *flags)
363 {
364 FILE *fp;
365
366 if (!(fp = fopen(filename, flags)))
367 err(1, "fopen: '%s'", filename);
368
369 return fp;
370 }
371
372 /* Percent-encode, see RFC3986 section 2.1. */
373 void
374 percentencode(FILE *fp, const char *s, size_t len)
375 {
376 static char tab[] = "0123456789ABCDEF";
377 unsigned char uc;
378 size_t i;
379
380 for (i = 0; *s && i < len; s++, i++) {
381 uc = *s;
382 /* NOTE: do not encode '/' for paths or ",-." */
383 if (uc < ',' || uc >= 127 || (uc >= ':' && uc <= '@') ||
384 uc == '[' || uc == ']') {
385 putc('%', fp);
386 putc(tab[(uc >> 4) & 0x0f], fp);
387 putc(tab[uc & 0x0f], fp);
388 } else {
389 putc(uc, fp);
390 }
391 }
392 }
393
394 /* Escape characters below as HTML 2.0 / XML 1.0. */
395 void
396 xmlencode(FILE *fp, const char *s, size_t len)
397 {
398 size_t i;
399
400 for (i = 0; *s && i < len; s++, i++) {
401 switch(*s) {
402 case '<': fputs("<", fp); break;
403 case '>': fputs(">", fp); break;
404 case '\'': fputs("'", fp); break;
405 case '&': fputs("&", fp); break;
406 case '"': fputs(""", fp); break;
407 default: putc(*s, fp);
408 }
409 }
410 }
411
412 /* Escape characters below as HTML 2.0 / XML 1.0, ignore printing '\r', '\n' */
413 void
414 xmlencodeline(FILE *fp, const char *s, size_t len)
415 {
416 size_t i;
417
418 for (i = 0; *s && i < len; s++, i++) {
419 switch(*s) {
420 case '<': fputs("<", fp); break;
421 case '>': fputs(">", fp); break;
422 case '\'': fputs("'", fp); break;
423 case '&': fputs("&", fp); break;
424 case '"': fputs(""", fp); break;
425 case '\r': break; /* ignore CR */
426 case '\n': break; /* ignore LF */
427 default: putc(*s, fp);
428 }
429 }
430 }
431
432 int
433 mkdirp(const char *path)
434 {
435 char tmp[PATH_MAX], *p;
436
437 if (strlcpy(tmp, path, sizeof(tmp)) >= sizeof(tmp))
438 errx(1, "path truncated: '%s'", path);
439 for (p = tmp + (tmp[0] == '/'); *p; p++) {
440 if (*p != '/')
441 continue;
442 *p = '\0';
443 if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
444 return -1;
445 *p = '/';
446 }
447 if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
448 return -1;
449 return 0;
450 }
451
452 void
453 printtimez(FILE *fp, const git_time *intime)
454 {
455 struct tm *intm;
456 time_t t;
457 char out[32];
458
459 t = (time_t)intime->time;
460 if (!(intm = gmtime(&t)))
461 return;
462 strftime(out, sizeof(out), "%Y-%m-%dT%H:%M:%SZ", intm);
463 fputs(out, fp);
464 }
465
466 void
467 printtime(FILE *fp, const git_time *intime)
468 {
469 struct tm *intm;
470 time_t t;
471 char out[32];
472
473 t = (time_t)intime->time + (intime->offset * 60);
474 if (!(intm = gmtime(&t)))
475 return;
476 strftime(out, sizeof(out), "%a, %e %b %Y %H:%M:%S", intm);
477 if (intime->offset < 0)
478 fprintf(fp, "%s -%02d%02d", out,
479 -(intime->offset) / 60, -(intime->offset) % 60);
480 else
481 fprintf(fp, "%s +%02d%02d", out,
482 intime->offset / 60, intime->offset % 60);
483 }
484
485 void
486 printtimeshort(FILE *fp, const git_time *intime)
487 {
488 struct tm *intm;
489 time_t t;
490 char out[32];
491
492 t = (time_t)intime->time;
493 if (!(intm = gmtime(&t)))
494 return;
495 strftime(out, sizeof(out), "%Y-%m-%d %H:%M", intm);
496 fputs(out, fp);
497 }
498
499 void
500 writeheader(FILE *fp, const char *title)
501 {
502 fputs("<!DOCTYPE html>\n"
503 "<html>\n<head>\n"
504 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
505 "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\" />\n"
506 "<title>", fp);
507 xmlencode(fp, title, strlen(title));
508 if (title[0] && strippedname[0])
509 fputs(" - ", fp);
510 xmlencode(fp, strippedname, strlen(strippedname));
511 if (description[0])
512 fputs(" - ", fp);
513 xmlencode(fp, description, strlen(description));
514 fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
515 fputs("<link rel=\"alternate\" type=\"application/atom+xml\" title=\"", fp);
516 xmlencode(fp, name, strlen(name));
517 fprintf(fp, " Atom Feed\" href=\"%satom.xml\" />\n", relpath);
518 fputs("<link rel=\"alternate\" type=\"application/atom+xml\" title=\"", fp);
519 xmlencode(fp, name, strlen(name));
520 fprintf(fp, " Atom Feed (tags)\" href=\"%stags.xml\" />\n", relpath);
521 fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"/css/main.css\" />\n");
522 fputs("</head>\n<body>", fp);
523 fputs("<header><nav><a class=\"logo\" id=\"logo\" href=\"/\">mccd</a><ul><li><a href=\"https://merveilles.town/@mccd\">mastodon</a></li><li><a href=\"/feed.xml\">rss</a></li><li><a href=\"/git\">git</a></li><li><a href=\"/wiki\">wiki</a></li></ul></nav></header>", fp);
524 fputs("\n<main id=\"git-content\">\n", fp);
525 fputs("<h1>", fp);
526 xmlencode(fp, strippedname, strlen(strippedname));
527 fputs("</h1><p class=\"desc\">", fp);
528 xmlencode(fp, description, strlen(description));
529 fputs("</p>", fp);
530 if (cloneurl[0]) {
531 fputs("<p class=\"url\">git clone <a href=\"", fp);
532 xmlencode(fp, cloneurl, strlen(cloneurl)); /* not percent-encoded */
533 fputs("\">", fp);
534 xmlencode(fp, cloneurl, strlen(cloneurl));
535 fputs("</a></p>", fp);
536 }
537 fputs("<table><tbody><tr><td id=\"links\">\n", fp);
538 fprintf(fp, "<a href=\"%slog.html\">Log</a> | ", relpath);
539 fprintf(fp, "<a href=\"%sfiles.html\">Files</a> | ", relpath);
540 fprintf(fp, "<a href=\"%srefs.html\">Refs</a>", relpath);
541 if (submodules)
542 fprintf(fp, " | <a href=\"%sfile/%s.html\">Submodules</a>",
543 relpath, submodules);
544 if (readme)
545 fprintf(fp, " | <a href=\"%sfile/%s.html\">README</a>",
546 relpath, readme);
547 if (license)
548 fprintf(fp, " | <a href=\"%sfile/%s.html\">LICENSE</a>",
549 relpath, license);
550 fputs("</td></tr></tbody></table>", fp);
551
552 }
553 void
554 writefooter(FILE *fp)
555 {
556 fputs("</main>\n</body>\n</html>\n", fp);
557 }
558
559 size_t
560 writeblobhtml(FILE *fp, const git_blob *blob)
561 {
562 size_t n = 0, i, len, prev;
563 const char *nfmt = "<a href=\"#l%zu\" class=\"line\" id=\"l%zu\">%7zu</a> ";
564 const char *s = git_blob_rawcontent(blob);
565
566 len = git_blob_rawsize(blob);
567 fputs("<pre id=\"blob\">\n", fp);
568
569 if (len > 0) {
570 for (i = 0, prev = 0; i < len; i++) {
571 if (s[i] != '\n')
572 continue;
573 n++;
574 fprintf(fp, nfmt, n, n, n);
575 xmlencodeline(fp, &s[prev], i - prev + 1);
576 putc('\n', fp);
577 prev = i + 1;
578 }
579 /* trailing data */
580 if ((len - prev) > 0) {
581 n++;
582 fprintf(fp, nfmt, n, n, n);
583 xmlencodeline(fp, &s[prev], len - prev);
584 }
585 }
586
587 fputs("</pre>\n", fp);
588
589 return n;
590 }
591
592 void
593 printcommit(FILE *fp, struct commitinfo *ci)
594 {
595 fprintf(fp, "<b>commit</b> <a href=\"%scommit/%s.html\">%s</a>\n",
596 relpath, ci->oid, ci->oid);
597
598 if (ci->parentoid[0])
599 fprintf(fp, "<b>parent</b> <a href=\"%scommit/%s.html\">%s</a>\n",
600 relpath, ci->parentoid, ci->parentoid);
601
602 if (ci->author) {
603 fputs("<b>Author:</b> ", fp);
604 xmlencode(fp, ci->author->name, strlen(ci->author->name));
605 fputs(" <<a href=\"mailto:", fp);
606 xmlencode(fp, ci->author->email, strlen(ci->author->email)); /* not percent-encoded */
607 fputs("\">", fp);
608 xmlencode(fp, ci->author->email, strlen(ci->author->email));
609 fputs("</a>>\n<b>Date:</b> ", fp);
610 printtime(fp, &(ci->author->when));
611 putc('\n', fp);
612 }
613 if (ci->msg) {
614 putc('\n', fp);
615 xmlencode(fp, ci->msg, strlen(ci->msg));
616 putc('\n', fp);
617 }
618 }
619
620 void
621 printshowfile(FILE *fp, struct commitinfo *ci)
622 {
623 const git_diff_delta *delta;
624 const git_diff_hunk *hunk;
625 const git_diff_line *line;
626 git_patch *patch;
627 size_t nhunks, nhunklines, changed, add, del, total, i, j, k;
628 char linestr[80];
629 int c;
630
631 printcommit(fp, ci);
632
633 if (!ci->deltas)
634 return;
635
636 if (ci->filecount > 1000 ||
637 ci->ndeltas > 1000 ||
638 ci->addcount > 100000 ||
639 ci->delcount > 100000) {
640 fputs("Diff is too large, output suppressed.\n", fp);
641 return;
642 }
643
644 /* diff stat */
645 fputs("<b>Diffstat:</b>\n<table>", fp);
646 for (i = 0; i < ci->ndeltas; i++) {
647 delta = git_patch_get_delta(ci->deltas[i]->patch);
648
649 switch (delta->status) {
650 case GIT_DELTA_ADDED: c = 'A'; break;
651 case GIT_DELTA_COPIED: c = 'C'; break;
652 case GIT_DELTA_DELETED: c = 'D'; break;
653 case GIT_DELTA_MODIFIED: c = 'M'; break;
654 case GIT_DELTA_RENAMED: c = 'R'; break;
655 case GIT_DELTA_TYPECHANGE: c = 'T'; break;
656 default: c = ' '; break;
657 }
658 if (c == ' ')
659 fprintf(fp, "<tr><td>%c", c);
660 else
661 fprintf(fp, "<tr><td class=\"%c\">%c", c, c);
662
663 fprintf(fp, "</td><td><a href=\"#h%zu\">", i);
664 xmlencode(fp, delta->old_file.path, strlen(delta->old_file.path));
665 if (strcmp(delta->old_file.path, delta->new_file.path)) {
666 fputs(" -> ", fp);
667 xmlencode(fp, delta->new_file.path, strlen(delta->new_file.path));
668 }
669
670 add = ci->deltas[i]->addcount;
671 del = ci->deltas[i]->delcount;
672 changed = add + del;
673 total = sizeof(linestr) - 2;
674 if (changed > total) {
675 if (add)
676 add = ((float)total / changed * add) + 1;
677 if (del)
678 del = ((float)total / changed * del) + 1;
679 }
680 memset(&linestr, '+', add);
681 memset(&linestr[add], '-', del);
682
683 fprintf(fp, "</a></td><td> | </td><td class=\"num\">%zu</td><td><span class=\"i\">",
684 ci->deltas[i]->addcount + ci->deltas[i]->delcount);
685 fwrite(&linestr, 1, add, fp);
686 fputs("</span><span class=\"d\">", fp);
687 fwrite(&linestr[add], 1, del, fp);
688 fputs("</span></td></tr>\n", fp);
689 }
690 fprintf(fp, "</table></pre><pre>%zu file%s changed, %zu insertion%s(+), %zu deletion%s(-)\n",
691 ci->filecount, ci->filecount == 1 ? "" : "s",
692 ci->addcount, ci->addcount == 1 ? "" : "s",
693 ci->delcount, ci->delcount == 1 ? "" : "s");
694
695 for (i = 0; i < ci->ndeltas; i++) {
696 patch = ci->deltas[i]->patch;
697 delta = git_patch_get_delta(patch);
698 fprintf(fp, "<b>diff --git a/<a id=\"h%zu\" href=\"%sfile/", i, relpath);
699 percentencode(fp, delta->old_file.path, strlen(delta->old_file.path));
700 fputs(".html\">", fp);
701 xmlencode(fp, delta->old_file.path, strlen(delta->old_file.path));
702 fprintf(fp, "</a> b/<a href=\"%sfile/", relpath);
703 percentencode(fp, delta->new_file.path, strlen(delta->new_file.path));
704 fprintf(fp, ".html\">");
705 xmlencode(fp, delta->new_file.path, strlen(delta->new_file.path));
706 fprintf(fp, "</a></b>\n");
707
708 /* check binary data */
709 if (delta->flags & GIT_DIFF_FLAG_BINARY) {
710 fputs("Binary files differ.\n", fp);
711 continue;
712 }
713
714 nhunks = git_patch_num_hunks(patch);
715 for (j = 0; j < nhunks; j++) {
716 if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
717 break;
718
719 fprintf(fp, "<a href=\"#h%zu-%zu\" id=\"h%zu-%zu\" class=\"h\">", i, j, i, j);
720 xmlencode(fp, hunk->header, hunk->header_len);
721 fputs("</a>", fp);
722
723 for (k = 0; ; k++) {
724 if (git_patch_get_line_in_hunk(&line, patch, j, k))
725 break;
726 if (line->old_lineno == -1)
727 fprintf(fp, "<a href=\"#h%zu-%zu-%zu\" id=\"h%zu-%zu-%zu\" class=\"i\">+",
728 i, j, k, i, j, k);
729 else if (line->new_lineno == -1)
730 fprintf(fp, "<a href=\"#h%zu-%zu-%zu\" id=\"h%zu-%zu-%zu\" class=\"d\">-",
731 i, j, k, i, j, k);
732 else
733 putc(' ', fp);
734 xmlencodeline(fp, line->content, line->content_len);
735 putc('\n', fp);
736 if (line->old_lineno == -1 || line->new_lineno == -1)
737 fputs("</a>", fp);
738 }
739 }
740 }
741 }
742
743 void
744 writelogline(FILE *fp, struct commitinfo *ci)
745 {
746 fputs("<tr><td>", fp);
747 if (ci->author)
748 printtimeshort(fp, &(ci->author->when));
749 fputs("</td><td>", fp);
750 if (ci->summary) {
751 fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
752 xmlencode(fp, ci->summary, strlen(ci->summary));
753 fputs("</a>", fp);
754 }
755 fputs("</td><td>", fp);
756 if (ci->author)
757 xmlencode(fp, ci->author->name, strlen(ci->author->name));
758 fputs("</td><td class=\"num\" align=\"right\">", fp);
759 fprintf(fp, "%zu", ci->filecount);
760 fputs("</td><td class=\"num\" align=\"right\">", fp);
761 fprintf(fp, "+%zu", ci->addcount);
762 fputs("</td><td class=\"num\" align=\"right\">", fp);
763 fprintf(fp, "-%zu", ci->delcount);
764 fputs("</td></tr>\n", fp);
765 }
766
767 int
768 writelog(FILE *fp, const git_oid *oid)
769 {
770 struct commitinfo *ci;
771 git_revwalk *w = NULL;
772 git_oid id;
773 char path[PATH_MAX], oidstr[GIT_OID_HEXSZ + 1];
774 FILE *fpfile;
775 size_t remcommits = 0;
776 int r;
777
778 git_revwalk_new(&w, repo);
779 git_revwalk_push(w, oid);
780
781 while (!git_revwalk_next(&id, w)) {
782 relpath = "";
783
784 if (cachefile && !memcmp(&id, &lastoid, sizeof(id)))
785 break;
786
787 git_oid_tostr(oidstr, sizeof(oidstr), &id);
788 r = snprintf(path, sizeof(path), "commit/%s.html", oidstr);
789 if (r < 0 || (size_t)r >= sizeof(path))
790 errx(1, "path truncated: 'commit/%s.html'", oidstr);
791 r = access(path, F_OK);
792
793 /* optimization: if there are no log lines to write and
794 the commit file already exists: skip the diffstat */
795 if (!nlogcommits) {
796 remcommits++;
797 if (!r)
798 continue;
799 }
800
801 if (!(ci = commitinfo_getbyoid(&id)))
802 break;
803 /* diffstat: for stagit HTML required for the log.html line */
804 if (commitinfo_getstats(ci) == -1)
805 goto err;
806
807 if (nlogcommits != 0) {
808 writelogline(fp, ci);
809 if (nlogcommits > 0)
810 nlogcommits--;
811 }
812
813 if (cachefile)
814 writelogline(wcachefp, ci);
815
816 /* check if file exists if so skip it */
817 if (r) {
818 relpath = "../";
819 fpfile = efopen(path, "w");
820 writeheader(fpfile, ci->summary);
821 fputs("<pre>", fpfile);
822 printshowfile(fpfile, ci);
823 fputs("</pre>\n", fpfile);
824 writefooter(fpfile);
825 checkfileerror(fpfile, path, 'w');
826 fclose(fpfile);
827 }
828 err:
829 commitinfo_free(ci);
830 }
831 git_revwalk_free(w);
832
833 if (nlogcommits == 0 && remcommits != 0) {
834 fprintf(fp, "<tr><td></td><td colspan=\"5\">"
835 "%zu more commits remaining, fetch the repository"
836 "</td></tr>\n", remcommits);
837 }
838
839 relpath = "";
840
841 return 0;
842 }
843
844 void
845 printcommitatom(FILE *fp, struct commitinfo *ci, const char *tag)
846 {
847 fputs("<entry>\n", fp);
848
849 fprintf(fp, "<id>%s</id>\n", ci->oid);
850 if (ci->author) {
851 fputs("<published>", fp);
852 printtimez(fp, &(ci->author->when));
853 fputs("</published>\n", fp);
854 }
855 if (ci->committer) {
856 fputs("<updated>", fp);
857 printtimez(fp, &(ci->committer->when));
858 fputs("</updated>\n", fp);
859 }
860 if (ci->summary) {
861 fputs("<title>", fp);
862 if (tag && tag[0]) {
863 fputs("[", fp);
864 xmlencode(fp, tag, strlen(tag));
865 fputs("] ", fp);
866 }
867 xmlencode(fp, ci->summary, strlen(ci->summary));
868 fputs("</title>\n", fp);
869 }
870 fprintf(fp, "<link rel=\"alternate\" type=\"text/html\" href=\"%scommit/%s.html\" />\n",
871 baseurl, ci->oid);
872
873 if (ci->author) {
874 fputs("<author>\n<name>", fp);
875 xmlencode(fp, ci->author->name, strlen(ci->author->name));
876 fputs("</name>\n<email>", fp);
877 xmlencode(fp, ci->author->email, strlen(ci->author->email));
878 fputs("</email>\n</author>\n", fp);
879 }
880
881 fputs("<content>", fp);
882 fprintf(fp, "commit %s\n", ci->oid);
883 if (ci->parentoid[0])
884 fprintf(fp, "parent %s\n", ci->parentoid);
885 if (ci->author) {
886 fputs("Author: ", fp);
887 xmlencode(fp, ci->author->name, strlen(ci->author->name));
888 fputs(" <", fp);
889 xmlencode(fp, ci->author->email, strlen(ci->author->email));
890 fputs(">\nDate: ", fp);
891 printtime(fp, &(ci->author->when));
892 putc('\n', fp);
893 }
894 if (ci->msg) {
895 putc('\n', fp);
896 xmlencode(fp, ci->msg, strlen(ci->msg));
897 }
898 fputs("\n</content>\n</entry>\n", fp);
899 }
900
901 int
902 writeatom(FILE *fp, int all)
903 {
904 struct referenceinfo *ris = NULL;
905 size_t refcount = 0;
906 struct commitinfo *ci;
907 git_revwalk *w = NULL;
908 git_oid id;
909 size_t i, m = 100; /* last 'm' commits */
910
911 fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
912 "<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
913 xmlencode(fp, strippedname, strlen(strippedname));
914 fputs(", branch HEAD</title>\n<subtitle>", fp);
915 xmlencode(fp, description, strlen(description));
916 fputs("</subtitle>\n", fp);
917
918 /* all commits or only tags? */
919 if (all) {
920 git_revwalk_new(&w, repo);
921 git_revwalk_push_head(w);
922 for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
923 if (!(ci = commitinfo_getbyoid(&id)))
924 break;
925 printcommitatom(fp, ci, "");
926 commitinfo_free(ci);
927 }
928 git_revwalk_free(w);
929 } else if (getrefs(&ris, &refcount) != -1) {
930 /* references: tags */
931 for (i = 0; i < refcount; i++) {
932 if (git_reference_is_tag(ris[i].ref))
933 printcommitatom(fp, ris[i].ci,
934 git_reference_shorthand(ris[i].ref));
935
936 commitinfo_free(ris[i].ci);
937 git_reference_free(ris[i].ref);
938 }
939 free(ris);
940 }
941
942 fputs("</feed>\n", fp);
943
944 return 0;
945 }
946
947 size_t
948 writeblob(git_object *obj, const char *fpath, const char *filename, size_t filesize)
949 {
950 char tmp[PATH_MAX] = "", *d;
951 const char *p;
952 size_t lc = 0;
953 FILE *fp;
954
955 if (strlcpy(tmp, fpath, sizeof(tmp)) >= sizeof(tmp))
956 errx(1, "path truncated: '%s'", fpath);
957 if (!(d = dirname(tmp)))
958 err(1, "dirname");
959 if (mkdirp(d))
960 return -1;
961
962 for (p = fpath, tmp[0] = '\0'; *p; p++) {
963 if (*p == '/' && strlcat(tmp, "../", sizeof(tmp)) >= sizeof(tmp))
964 errx(1, "path truncated: '../%s'", tmp);
965 }
966 relpath = tmp;
967
968 fp = efopen(fpath, "w");
969 writeheader(fp, filename);
970 fputs("<p id=\"filename\"> ", fp);
971 xmlencode(fp, filename, strlen(filename));
972 fprintf(fp, " (%zuB)", filesize);
973 fputs("</p>", fp);
974
975 if (git_blob_is_binary((git_blob *)obj))
976 fputs("<p>Binary file.</p>\n", fp);
977 else
978 lc = writeblobhtml(fp, (git_blob *)obj);
979
980 writefooter(fp);
981 checkfileerror(fp, fpath, 'w');
982 fclose(fp);
983
984 relpath = "";
985
986 return lc;
987 }
988
989 const char *
990 filemode(git_filemode_t m)
991 {
992 static char mode[11];
993
994 memset(mode, '-', sizeof(mode) - 1);
995 mode[10] = '\0';
996
997 if (S_ISREG(m))
998 mode[0] = '-';
999 else if (S_ISBLK(m))
1000 mode[0] = 'b';
1001 else if (S_ISCHR(m))
1002 mode[0] = 'c';
1003 else if (S_ISDIR(m))
1004 mode[0] = 'd';
1005 else if (S_ISFIFO(m))
1006 mode[0] = 'p';
1007 else if (S_ISLNK(m))
1008 mode[0] = 'l';
1009 else if (S_ISSOCK(m))
1010 mode[0] = 's';
1011 else
1012 mode[0] = '?';
1013
1014 if (m & S_IRUSR) mode[1] = 'r';
1015 if (m & S_IWUSR) mode[2] = 'w';
1016 if (m & S_IXUSR) mode[3] = 'x';
1017 if (m & S_IRGRP) mode[4] = 'r';
1018 if (m & S_IWGRP) mode[5] = 'w';
1019 if (m & S_IXGRP) mode[6] = 'x';
1020 if (m & S_IROTH) mode[7] = 'r';
1021 if (m & S_IWOTH) mode[8] = 'w';
1022 if (m & S_IXOTH) mode[9] = 'x';
1023
1024 if (m & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
1025 if (m & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
1026 if (m & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T';
1027
1028 return mode;
1029 }
1030
1031 int
1032 writefilestree(FILE *fp, git_tree *tree, const char *path)
1033 {
1034 const git_tree_entry *entry = NULL;
1035 git_object *obj = NULL;
1036 const char *entryname;
1037 char filepath[PATH_MAX], entrypath[PATH_MAX], oid[8];
1038 size_t count, i, lc, filesize;
1039 int r, ret;
1040
1041 count = git_tree_entrycount(tree);
1042 for (i = 0; i < count; i++) {
1043 if (!(entry = git_tree_entry_byindex(tree, i)) ||
1044 !(entryname = git_tree_entry_name(entry)))
1045 return -1;
1046 joinpath(entrypath, sizeof(entrypath), path, entryname);
1047
1048 r = snprintf(filepath, sizeof(filepath), "file/%s.html",
1049 entrypath);
1050 if (r < 0 || (size_t)r >= sizeof(filepath))
1051 errx(1, "path truncated: 'file/%s.html'", entrypath);
1052
1053 if (!git_tree_entry_to_object(&obj, repo, entry)) {
1054 switch (git_object_type(obj)) {
1055 case GIT_OBJ_BLOB:
1056 break;
1057 case GIT_OBJ_TREE:
1058 /* NOTE: recurses */
1059 ret = writefilestree(fp, (git_tree *)obj,
1060 entrypath);
1061 git_object_free(obj);
1062 if (ret)
1063 return ret;
1064 continue;
1065 default:
1066 git_object_free(obj);
1067 continue;
1068 }
1069
1070 filesize = git_blob_rawsize((git_blob *)obj);
1071 lc = writeblob(obj, filepath, entryname, filesize);
1072
1073 fputs("<tr><td>", fp);
1074 fputs(filemode(git_tree_entry_filemode(entry)), fp);
1075 fprintf(fp, "</td><td><a href=\"%s", relpath);
1076 percentencode(fp, filepath, strlen(filepath));
1077 fputs("\">", fp);
1078 xmlencode(fp, entrypath, strlen(entrypath));
1079 fputs("</a></td><td class=\"num\" align=\"right\">", fp);
1080 if (lc > 0)
1081 fprintf(fp, "%zuL", lc);
1082 else
1083 fprintf(fp, "%zuB", filesize);
1084 fputs("</td></tr>\n", fp);
1085 git_object_free(obj);
1086 } else if (git_tree_entry_type(entry) == GIT_OBJ_COMMIT) {
1087 /* commit object in tree is a submodule */
1088 fprintf(fp, "<tr><td>m---------</td><td><a href=\"%sfile/.gitmodules.html\">",
1089 relpath);
1090 xmlencode(fp, entrypath, strlen(entrypath));
1091 fputs("</a> @ ", fp);
1092 git_oid_tostr(oid, sizeof(oid), git_tree_entry_id(entry));
1093 xmlencode(fp, oid, strlen(oid));
1094 fputs("</td><td class=\"num\" align=\"right\"></td></tr>\n", fp);
1095 }
1096 }
1097
1098 return 0;
1099 }
1100
1101 int
1102 writefiles(FILE *fp, const git_oid *id)
1103 {
1104 git_tree *tree = NULL;
1105 git_commit *commit = NULL;
1106 int ret = -1;
1107
1108 fputs("<table id=\"files\"><thead>\n<tr>"
1109 "<td><b>Mode</b></td><td><b>Name</b></td>"
1110 "<td class=\"num\" align=\"right\"><b>Size</b></td>"
1111 "</tr>\n</thead><tbody>\n", fp);
1112
1113 if (!git_commit_lookup(&commit, repo, id) &&
1114 !git_commit_tree(&tree, commit))
1115 ret = writefilestree(fp, tree, "");
1116
1117 fputs("</tbody></table>", fp);
1118
1119 git_commit_free(commit);
1120 git_tree_free(tree);
1121
1122 return ret;
1123 }
1124
1125 int
1126 writerefs(FILE *fp)
1127 {
1128 struct referenceinfo *ris = NULL;
1129 struct commitinfo *ci;
1130 size_t count, i, j, refcount;
1131 const char *titles[] = { "Branches", "Tags" };
1132 const char *ids[] = { "branches", "tags" };
1133 const char *s;
1134
1135 if (getrefs(&ris, &refcount) == -1)
1136 return -1;
1137
1138 for (i = 0, j = 0, count = 0; i < refcount; i++) {
1139 if (j == 0 && git_reference_is_tag(ris[i].ref)) {
1140 if (count)
1141 fputs("</tbody></table><br/>\n", fp);
1142 count = 0;
1143 j = 1;
1144 }
1145
1146 /* print header if it has an entry (first). */
1147 if (++count == 1) {
1148 fprintf(fp, "<h2>%s</h2><table id=\"%s\">"
1149 "<thead>\n<tr><td><b>Name</b></td>"
1150 "<td><b>Last commit date</b></td>"
1151 "<td><b>Author</b></td>\n</tr>\n"
1152 "</thead><tbody>\n",
1153 titles[j], ids[j]);
1154 }
1155
1156 ci = ris[i].ci;
1157 s = git_reference_shorthand(ris[i].ref);
1158
1159 fputs("<tr><td>", fp);
1160 xmlencode(fp, s, strlen(s));
1161 fputs("</td><td>", fp);
1162 if (ci->author)
1163 printtimeshort(fp, &(ci->author->when));
1164 fputs("</td><td>", fp);
1165 if (ci->author)
1166 xmlencode(fp, ci->author->name, strlen(ci->author->name));
1167 fputs("</td></tr>\n", fp);
1168 }
1169 /* table footer */
1170 if (count)
1171 fputs("</tbody></table><br/>\n", fp);
1172
1173 for (i = 0; i < refcount; i++) {
1174 commitinfo_free(ris[i].ci);
1175 git_reference_free(ris[i].ref);
1176 }
1177 free(ris);
1178
1179 return 0;
1180 }
1181
1182 void
1183 usage(char *argv0)
1184 {
1185 fprintf(stderr, "usage: %s [-c cachefile | -l commits] "
1186 "[-u baseurl] repodir\n", argv0);
1187 exit(1);
1188 }
1189
1190 int
1191 main(int argc, char *argv[])
1192 {
1193 git_object *obj = NULL;
1194 const git_oid *head = NULL;
1195 mode_t mask;
1196 FILE *fp, *fpread;
1197 char path[PATH_MAX], repodirabs[PATH_MAX + 1], *p;
1198 char tmppath[64] = "cache.XXXXXXXXXXXX", buf[BUFSIZ];
1199 size_t n;
1200 int i, fd;
1201
1202 for (i = 1; i < argc; i++) {
1203 if (argv[i][0] != '-') {
1204 if (repodir)
1205 usage(argv[0]);
1206 repodir = argv[i];
1207 } else if (argv[i][1] == 'c') {
1208 if (nlogcommits > 0 || i + 1 >= argc)
1209 usage(argv[0]);
1210 cachefile = argv[++i];
1211 } else if (argv[i][1] == 'l') {
1212 if (cachefile || i + 1 >= argc)
1213 usage(argv[0]);
1214 errno = 0;
1215 nlogcommits = strtoll(argv[++i], &p, 10);
1216 if (argv[i][0] == '\0' || *p != '\0' ||
1217 nlogcommits <= 0 || errno)
1218 usage(argv[0]);
1219 } else if (argv[i][1] == 'u') {
1220 if (i + 1 >= argc)
1221 usage(argv[0]);
1222 baseurl = argv[++i];
1223 }
1224 }
1225 if (!repodir)
1226 usage(argv[0]);
1227
1228 if (!realpath(repodir, repodirabs))
1229 err(1, "realpath");
1230
1231 /* do not search outside the git repository:
1232 GIT_CONFIG_LEVEL_APP is the highest level currently */
1233 git_libgit2_init();
1234 for (i = 1; i <= GIT_CONFIG_LEVEL_APP; i++)
1235 git_libgit2_opts(GIT_OPT_SET_SEARCH_PATH, i, "");
1236 /* do not require the git repository to be owned by the current user */
1237 git_libgit2_opts(GIT_OPT_SET_OWNER_VALIDATION, 0);
1238
1239 #ifdef __OpenBSD__
1240 if (unveil(repodir, "r") == -1)
1241 err(1, "unveil: %s", repodir);
1242 if (unveil(".", "rwc") == -1)
1243 err(1, "unveil: .");
1244 if (cachefile && unveil(cachefile, "rwc") == -1)
1245 err(1, "unveil: %s", cachefile);
1246
1247 if (cachefile) {
1248 if (pledge("stdio rpath wpath cpath fattr", NULL) == -1)
1249 err(1, "pledge");
1250 } else {
1251 if (pledge("stdio rpath wpath cpath", NULL) == -1)
1252 err(1, "pledge");
1253 }
1254 #endif
1255
1256 if (git_repository_open_ext(&repo, repodir,
1257 GIT_REPOSITORY_OPEN_NO_SEARCH, NULL) < 0) {
1258 fprintf(stderr, "%s: cannot open repository\n", argv[0]);
1259 return 1;
1260 }
1261
1262 /* find HEAD */
1263 if (!git_revparse_single(&obj, repo, "HEAD"))
1264 head = git_object_id(obj);
1265 git_object_free(obj);
1266
1267 /* use directory name as name */
1268 if ((name = strrchr(repodirabs, '/')))
1269 name++;
1270 else
1271 name = "";
1272
1273 /* strip .git suffix */
1274 if (!(strippedname = strdup(name)))
1275 err(1, "strdup");
1276 if ((p = strrchr(strippedname, '.')))
1277 if (!strcmp(p, ".git"))
1278 *p = '\0';
1279
1280 /* read description or .git/description */
1281 joinpath(path, sizeof(path), repodir, "description");
1282 if (!(fpread = fopen(path, "r"))) {
1283 joinpath(path, sizeof(path), repodir, ".git/description");
1284 fpread = fopen(path, "r");
1285 }
1286 if (fpread) {
1287 if (!fgets(description, sizeof(description), fpread))
1288 description[0] = '\0';
1289 checkfileerror(fpread, path, 'r');
1290 fclose(fpread);
1291 }
1292
1293 /* read url or .git/url */
1294 joinpath(path, sizeof(path), repodir, "url");
1295 if (!(fpread = fopen(path, "r"))) {
1296 joinpath(path, sizeof(path), repodir, ".git/url");
1297 fpread = fopen(path, "r");
1298 }
1299 if (fpread) {
1300 if (!fgets(cloneurl, sizeof(cloneurl), fpread))
1301 cloneurl[0] = '\0';
1302 checkfileerror(fpread, path, 'r');
1303 fclose(fpread);
1304 cloneurl[strcspn(cloneurl, "\n")] = '\0';
1305 }
1306
1307 /* check LICENSE */
1308 for (i = 0; i < LEN(licensefiles) && !license; i++) {
1309 if (!git_revparse_single(&obj, repo, licensefiles[i]) &&
1310 git_object_type(obj) == GIT_OBJ_BLOB)
1311 license = licensefiles[i] + strlen("HEAD:");
1312 git_object_free(obj);
1313 }
1314
1315 /* check README */
1316 for (i = 0; i < LEN(readmefiles) && !readme; i++) {
1317 if (!git_revparse_single(&obj, repo, readmefiles[i]) &&
1318 git_object_type(obj) == GIT_OBJ_BLOB)
1319 readme = readmefiles[i] + strlen("HEAD:");
1320 git_object_free(obj);
1321 }
1322
1323 if (!git_revparse_single(&obj, repo, "HEAD:.gitmodules") &&
1324 git_object_type(obj) == GIT_OBJ_BLOB)
1325 submodules = ".gitmodules";
1326 git_object_free(obj);
1327
1328 /* log for HEAD */
1329 fp = efopen("log.html", "w");
1330 relpath = "";
1331 mkdir("commit", S_IRWXU | S_IRWXG | S_IRWXO);
1332 writeheader(fp, "Log");
1333 fputs("<table id=\"log\"><thead>\n<tr><td><b>Date</b></td>"
1334 "<td><b>Commit message</b></td>"
1335 "<td><b>Author</b></td><td class=\"num\" align=\"right\"><b>Files</b></td>"
1336 "<td class=\"num\" align=\"right\"><b>+</b></td>"
1337 "<td class=\"num\" align=\"right\"><b>-</b></td></tr>\n</thead><tbody>\n", fp);
1338
1339 if (cachefile && head) {
1340 /* read from cache file (does not need to exist) */
1341 if ((rcachefp = fopen(cachefile, "r"))) {
1342 if (!fgets(lastoidstr, sizeof(lastoidstr), rcachefp))
1343 errx(1, "%s: no object id", cachefile);
1344 if (git_oid_fromstr(&lastoid, lastoidstr))
1345 errx(1, "%s: invalid object id", cachefile);
1346 }
1347
1348 /* write log to (temporary) cache */
1349 if ((fd = mkstemp(tmppath)) == -1)
1350 err(1, "mkstemp");
1351 if (!(wcachefp = fdopen(fd, "w")))
1352 err(1, "fdopen: '%s'", tmppath);
1353 /* write last commit id (HEAD) */
1354 git_oid_tostr(buf, sizeof(buf), head);
1355 fprintf(wcachefp, "%s\n", buf);
1356
1357 writelog(fp, head);
1358
1359 if (rcachefp) {
1360 /* append previous log to log.html and the new cache */
1361 while (!feof(rcachefp)) {
1362 n = fread(buf, 1, sizeof(buf), rcachefp);
1363 if (ferror(rcachefp))
1364 break;
1365 if (fwrite(buf, 1, n, fp) != n ||
1366 fwrite(buf, 1, n, wcachefp) != n)
1367 break;
1368 }
1369 checkfileerror(rcachefp, cachefile, 'r');
1370 fclose(rcachefp);
1371 }
1372 checkfileerror(wcachefp, tmppath, 'w');
1373 fclose(wcachefp);
1374 } else {
1375 if (head)
1376 writelog(fp, head);
1377 }
1378
1379 fputs("</tbody></table>", fp);
1380 writefooter(fp);
1381 checkfileerror(fp, "log.html", 'w');
1382 fclose(fp);
1383
1384 /* files for HEAD */
1385 fp = efopen("files.html", "w");
1386 writeheader(fp, "Files");
1387 if (head)
1388 writefiles(fp, head);
1389 writefooter(fp);
1390 checkfileerror(fp, "files.html", 'w');
1391 fclose(fp);
1392
1393 /* summary page with branches and tags */
1394 fp = efopen("refs.html", "w");
1395 writeheader(fp, "Refs");
1396 writerefs(fp);
1397 writefooter(fp);
1398 checkfileerror(fp, "refs.html", 'w');
1399 fclose(fp);
1400
1401 /* Atom feed */
1402 fp = efopen("atom.xml", "w");
1403 writeatom(fp, 1);
1404 checkfileerror(fp, "atom.xml", 'w');
1405 fclose(fp);
1406
1407 /* Atom feed for tags / releases */
1408 fp = efopen("tags.xml", "w");
1409 writeatom(fp, 0);
1410 checkfileerror(fp, "tags.xml", 'w');
1411 fclose(fp);
1412
1413 /* rename new cache file on success */
1414 if (cachefile && head) {
1415 if (rename(tmppath, cachefile))
1416 err(1, "rename: '%s' to '%s'", tmppath, cachefile);
1417 umask((mask = umask(0)));
1418 if (chmod(cachefile,
1419 (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) & ~mask))
1420 err(1, "chmod: '%s'", cachefile);
1421 }
1422
1423 /* cleanup */
1424 git_repository_free(repo);
1425 git_libgit2_shutdown();
1426
1427 return 0;
1428 }