stagit-gopher.c - stagit-gopher - A git gopher frontend. (mirror)
HTML git clone git://bitreich.org/stagit-gopher/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/stagit-gopher/
DIR Log
DIR Files
DIR Refs
DIR Tags
DIR README
DIR LICENSE
---
stagit-gopher.c (35494B)
---
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 <locale.h>
9 #include <stdint.h>
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #include <time.h>
14 #include <unistd.h>
15 #include <wchar.h>
16
17 #include <git2.h>
18
19 #include "compat.h"
20
21 #define LEN(s) (sizeof(s)/sizeof(*s))
22 #define PAD_TRUNCATE_SYMBOL "\xe2\x80\xa6" /* symbol: "ellipsis" */
23 #define UTF_INVALID_SYMBOL "\xef\xbf\xbd" /* symbol: "replacement" */
24
25 struct deltainfo {
26 git_patch *patch;
27
28 size_t addcount;
29 size_t delcount;
30 };
31
32 struct commitinfo {
33 const git_oid *id;
34
35 char oid[GIT_OID_HEXSZ + 1];
36 char parentoid[GIT_OID_HEXSZ + 1];
37
38 const git_signature *author;
39 const git_signature *committer;
40 const char *summary;
41 const char *msg;
42
43 git_diff *diff;
44 git_commit *commit;
45 git_commit *parent;
46 git_tree *commit_tree;
47 git_tree *parent_tree;
48
49 size_t addcount;
50 size_t delcount;
51 size_t filecount;
52
53 struct deltainfo **deltas;
54 size_t ndeltas;
55 };
56
57 /* reference and associated data for sorting */
58 struct referenceinfo {
59 struct git_reference *ref;
60 struct commitinfo *ci;
61 };
62
63 static git_repository *repo;
64
65 static const char *baseurl = ""; /* base URL to make absolute RSS/Atom URI */
66 static const char *relpath = "";
67 static const char *repodir;
68
69 static char *name = "";
70 static char *strippedname = "";
71 static char description[255];
72 static char cloneurl[1024];
73 static char *submodules;
74 static char *licensefiles[] = { "HEAD:LICENSE", "HEAD:LICENSE.md", "HEAD:COPYING" };
75 static char *license;
76 static char *readmefiles[] = { "HEAD:README", "HEAD:README.md" };
77 static char *readme;
78 static long long nlogcommits = -1; /* -1 indicates not used */
79
80 /* cache */
81 static git_oid lastoid;
82 static char lastoidstr[GIT_OID_HEXSZ + 2]; /* id + newline + NUL byte */
83 static FILE *rcachefp, *wcachefp;
84 static const char *cachefile;
85
86 /* Handle read or write errors for a FILE * stream */
87 void
88 checkfileerror(FILE *fp, const char *name, int mode)
89 {
90 if (mode == 'r' && ferror(fp))
91 errx(1, "read error: %s", name);
92 else if (mode == 'w' && (fflush(fp) || ferror(fp)))
93 errx(1, "write error: %s", name);
94 }
95
96 /* Format `len' columns of characters. If string is shorter pad the rest
97 * with characters `pad`. */
98 int
99 utf8pad(char *buf, size_t bufsiz, const char *s, size_t len, int pad)
100 {
101 wchar_t wc;
102 size_t col = 0, i, slen, siz = 0;
103 int inc, rl, w;
104
105 if (!bufsiz)
106 return -1;
107 if (!len) {
108 buf[0] = '\0';
109 return 0;
110 }
111
112 slen = strlen(s);
113 for (i = 0; i < slen; i += inc) {
114 inc = 1; /* next byte */
115 if ((unsigned char)s[i] < 32)
116 continue;
117
118 rl = mbtowc(&wc, &s[i], slen - i < 4 ? slen - i : 4);
119 inc = rl;
120 if (rl < 0) {
121 mbtowc(NULL, NULL, 0); /* reset state */
122 inc = 1; /* invalid, seek next byte */
123 w = 1; /* replacement char is one width */
124 } else if ((w = wcwidth(wc)) == -1) {
125 continue;
126 }
127
128 if (col + w > len || (col + w == len && s[i + inc])) {
129 if (siz + 4 >= bufsiz)
130 return -1;
131 memcpy(&buf[siz], PAD_TRUNCATE_SYMBOL, sizeof(PAD_TRUNCATE_SYMBOL) - 1);
132 siz += sizeof(PAD_TRUNCATE_SYMBOL) - 1;
133 buf[siz] = '\0';
134 col++;
135 break;
136 } else if (rl < 0) {
137 if (siz + 4 >= bufsiz)
138 return -1;
139 memcpy(&buf[siz], UTF_INVALID_SYMBOL, sizeof(UTF_INVALID_SYMBOL) - 1);
140 siz += sizeof(UTF_INVALID_SYMBOL) - 1;
141 buf[siz] = '\0';
142 col++;
143 continue;
144 }
145 if (siz + inc + 1 >= bufsiz)
146 return -1;
147 memcpy(&buf[siz], &s[i], inc);
148 siz += inc;
149 buf[siz] = '\0';
150 col += w;
151 }
152
153 len -= col;
154 if (siz + len + 1 >= bufsiz)
155 return -1;
156 memset(&buf[siz], pad, len);
157 siz += len;
158 buf[siz] = '\0';
159
160 return 0;
161 }
162
163 void
164 joinpath(char *buf, size_t bufsiz, const char *path, const char *path2)
165 {
166 int r;
167
168 r = snprintf(buf, bufsiz, "%s%s%s",
169 path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
170 if (r < 0 || (size_t)r >= bufsiz)
171 errx(1, "path truncated: '%s%s%s'",
172 path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
173 }
174
175 void
176 deltainfo_free(struct deltainfo *di)
177 {
178 if (!di)
179 return;
180 git_patch_free(di->patch);
181 memset(di, 0, sizeof(*di));
182 free(di);
183 }
184
185 int
186 commitinfo_getstats(struct commitinfo *ci)
187 {
188 struct deltainfo *di;
189 git_diff_options opts;
190 git_diff_find_options fopts;
191 const git_diff_delta *delta;
192 const git_diff_hunk *hunk;
193 const git_diff_line *line;
194 git_patch *patch = NULL;
195 size_t ndeltas, nhunks, nhunklines;
196 size_t i, j, k;
197
198 if (git_tree_lookup(&(ci->commit_tree), repo, git_commit_tree_id(ci->commit)))
199 goto err;
200 if (!git_commit_parent(&(ci->parent), ci->commit, 0)) {
201 if (git_tree_lookup(&(ci->parent_tree), repo, git_commit_tree_id(ci->parent))) {
202 ci->parent = NULL;
203 ci->parent_tree = NULL;
204 }
205 }
206
207 git_diff_init_options(&opts, GIT_DIFF_OPTIONS_VERSION);
208 opts.flags |= GIT_DIFF_DISABLE_PATHSPEC_MATCH |
209 GIT_DIFF_IGNORE_SUBMODULES |
210 GIT_DIFF_INCLUDE_TYPECHANGE;
211 if (git_diff_tree_to_tree(&(ci->diff), repo, ci->parent_tree, ci->commit_tree, &opts))
212 goto err;
213
214 if (git_diff_find_init_options(&fopts, GIT_DIFF_FIND_OPTIONS_VERSION))
215 goto err;
216 /* find renames and copies, exact matches (no heuristic) for renames. */
217 fopts.flags |= GIT_DIFF_FIND_RENAMES | GIT_DIFF_FIND_COPIES |
218 GIT_DIFF_FIND_EXACT_MATCH_ONLY;
219 if (git_diff_find_similar(ci->diff, &fopts))
220 goto err;
221
222 ndeltas = git_diff_num_deltas(ci->diff);
223 if (ndeltas && !(ci->deltas = calloc(ndeltas, sizeof(struct deltainfo *))))
224 err(1, "calloc");
225
226 for (i = 0; i < ndeltas; i++) {
227 if (git_patch_from_diff(&patch, ci->diff, i))
228 goto err;
229
230 if (!(di = calloc(1, sizeof(struct deltainfo))))
231 err(1, "calloc");
232 di->patch = patch;
233 ci->deltas[i] = di;
234
235 delta = git_patch_get_delta(patch);
236
237 /* skip stats for binary data */
238 if (delta->flags & GIT_DIFF_FLAG_BINARY)
239 continue;
240
241 nhunks = git_patch_num_hunks(patch);
242 for (j = 0; j < nhunks; j++) {
243 if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
244 break;
245 for (k = 0; ; k++) {
246 if (git_patch_get_line_in_hunk(&line, patch, j, k))
247 break;
248 if (line->old_lineno == -1) {
249 di->addcount++;
250 ci->addcount++;
251 } else if (line->new_lineno == -1) {
252 di->delcount++;
253 ci->delcount++;
254 }
255 }
256 }
257 }
258 ci->ndeltas = i;
259 ci->filecount = i;
260
261 return 0;
262
263 err:
264 git_diff_free(ci->diff);
265 ci->diff = NULL;
266 git_tree_free(ci->commit_tree);
267 ci->commit_tree = NULL;
268 git_tree_free(ci->parent_tree);
269 ci->parent_tree = NULL;
270 git_commit_free(ci->parent);
271 ci->parent = NULL;
272 if (ci->deltas)
273 for (i = 0; i < ci->ndeltas; i++)
274 deltainfo_free(ci->deltas[i]);
275 free(ci->deltas);
276 ci->deltas = NULL;
277 ci->ndeltas = 0;
278 ci->addcount = 0;
279 ci->delcount = 0;
280 ci->filecount = 0;
281
282 return -1;
283 }
284
285 void
286 commitinfo_free(struct commitinfo *ci)
287 {
288 size_t i;
289
290 if (!ci)
291 return;
292 if (ci->deltas)
293 for (i = 0; i < ci->ndeltas; i++)
294 deltainfo_free(ci->deltas[i]);
295 free(ci->deltas);
296 git_diff_free(ci->diff);
297 git_tree_free(ci->commit_tree);
298 git_tree_free(ci->parent_tree);
299 git_commit_free(ci->commit);
300 git_commit_free(ci->parent);
301 memset(ci, 0, sizeof(*ci));
302 free(ci);
303 }
304
305 struct commitinfo *
306 commitinfo_getbyoid(const git_oid *id)
307 {
308 struct commitinfo *ci;
309
310 if (!(ci = calloc(1, sizeof(struct commitinfo))))
311 err(1, "calloc");
312
313 if (git_commit_lookup(&(ci->commit), repo, id))
314 goto err;
315 ci->id = id;
316
317 git_oid_tostr(ci->oid, sizeof(ci->oid), git_commit_id(ci->commit));
318 git_oid_tostr(ci->parentoid, sizeof(ci->parentoid), git_commit_parent_id(ci->commit, 0));
319
320 ci->author = git_commit_author(ci->commit);
321 ci->committer = git_commit_committer(ci->commit);
322 ci->summary = git_commit_summary(ci->commit);
323 ci->msg = git_commit_message(ci->commit);
324
325 return ci;
326
327 err:
328 commitinfo_free(ci);
329
330 return NULL;
331 }
332
333 int
334 refs_cmp(const void *v1, const void *v2)
335 {
336 const struct referenceinfo *r1 = v1, *r2 = v2;
337 time_t t1, t2;
338 int r;
339
340 if ((r = git_reference_is_tag(r1->ref) - git_reference_is_tag(r2->ref)))
341 return r;
342
343 t1 = r1->ci->author ? r1->ci->author->when.time : 0;
344 t2 = r2->ci->author ? r2->ci->author->when.time : 0;
345 if ((r = t1 > t2 ? -1 : (t1 == t2 ? 0 : 1)))
346 return r;
347
348 return strcmp(git_reference_shorthand(r1->ref),
349 git_reference_shorthand(r2->ref));
350 }
351
352 int
353 getrefs(struct referenceinfo **pris, size_t *prefcount)
354 {
355 struct referenceinfo *ris = NULL;
356 struct commitinfo *ci = NULL;
357 git_reference_iterator *it = NULL;
358 const git_oid *id = NULL;
359 git_object *obj = NULL;
360 git_reference *dref = NULL, *r, *ref = NULL;
361 size_t i, refcount;
362
363 *pris = NULL;
364 *prefcount = 0;
365
366 if (git_reference_iterator_new(&it, repo))
367 return -1;
368
369 for (refcount = 0; !git_reference_next(&ref, it); ) {
370 if (!git_reference_is_branch(ref) && !git_reference_is_tag(ref)) {
371 git_reference_free(ref);
372 ref = NULL;
373 continue;
374 }
375
376 switch (git_reference_type(ref)) {
377 case GIT_REF_SYMBOLIC:
378 if (git_reference_resolve(&dref, ref))
379 goto err;
380 r = dref;
381 break;
382 case GIT_REF_OID:
383 r = ref;
384 break;
385 default:
386 continue;
387 }
388 if (!git_reference_target(r) ||
389 git_reference_peel(&obj, r, GIT_OBJ_ANY))
390 goto err;
391 if (!(id = git_object_id(obj)))
392 goto err;
393 if (!(ci = commitinfo_getbyoid(id)))
394 break;
395
396 if (!(ris = reallocarray(ris, refcount + 1, sizeof(*ris))))
397 err(1, "realloc");
398 ris[refcount].ci = ci;
399 ris[refcount].ref = r;
400 refcount++;
401
402 git_object_free(obj);
403 obj = NULL;
404 git_reference_free(dref);
405 dref = NULL;
406 }
407 git_reference_iterator_free(it);
408
409 /* sort by type, date then shorthand name */
410 qsort(ris, refcount, sizeof(*ris), refs_cmp);
411
412 *pris = ris;
413 *prefcount = refcount;
414
415 return 0;
416
417 err:
418 git_object_free(obj);
419 git_reference_free(dref);
420 commitinfo_free(ci);
421 for (i = 0; i < refcount; i++) {
422 commitinfo_free(ris[i].ci);
423 git_reference_free(ris[i].ref);
424 }
425 free(ris);
426
427 return -1;
428 }
429
430 FILE *
431 efopen(const char *filename, const char *flags)
432 {
433 FILE *fp;
434
435 if (!(fp = fopen(filename, flags)))
436 err(1, "fopen: '%s'", filename);
437
438 return fp;
439 }
440
441 /* Escape characters below as HTML 2.0 / XML 1.0. */
442 void
443 xmlencode(FILE *fp, const char *s, size_t len)
444 {
445 size_t i;
446
447 for (i = 0; *s && i < len; s++, i++) {
448 switch(*s) {
449 case '<': fputs("<", fp); break;
450 case '>': fputs(">", fp); break;
451 case '\'': fputs("'", fp); break;
452 case '&': fputs("&", fp); break;
453 case '"': fputs(""", fp); break;
454 default: putc(*s, fp);
455 }
456 }
457 }
458
459 /* Escape characters in text in geomyidae .gph format, with newlines */
460 void
461 gphtextnl(FILE *fp, const char *s, size_t len)
462 {
463 size_t i, n = 0;
464
465 for (i = 0; s[i] && i < len; i++) {
466 /* escape '[' with "[|" at the start of a line */
467 if (!n && s[i] == '[')
468 fputs("[|", fp);
469
470 switch (s[i]) {
471 case '\t': fputs(" ", fp);
472 case '\r': break;
473 default: putc(s[i], fp);
474 }
475 n = (s[i] != '\n');
476 }
477 }
478
479 /* Escape characters in text in geomyidae .gph format,
480 newlines are ignored */
481 void
482 gphtext(FILE *fp, const char *s, size_t len)
483 {
484 size_t i;
485
486 for (i = 0; *s && i < len; s++, i++) {
487 switch (*s) {
488 case '\r': /* ignore CR */
489 case '\n': /* ignore LF */
490 break;
491 case '\t':
492 fputs(" ", fp);
493 break;
494 default:
495 putc(*s, fp);
496 break;
497 }
498 }
499 }
500
501 /* Escape characters in links in geomyidae .gph format */
502 void
503 gphlink(FILE *fp, const char *s, size_t len)
504 {
505 size_t i;
506
507 for (i = 0; *s && i < len; s++, i++) {
508 switch (*s) {
509 case '\r': /* ignore CR */
510 case '\n': /* ignore LF */
511 break;
512 case '\t':
513 fputs(" ", fp);
514 break;
515 case '|': /* escape separators */
516 fputs("\\|", fp);
517 break;
518 default:
519 putc(*s, fp);
520 break;
521 }
522 }
523 }
524
525 int
526 mkdirp(const char *path)
527 {
528 char tmp[PATH_MAX], *p;
529
530 if (strlcpy(tmp, path, sizeof(tmp)) >= sizeof(tmp))
531 errx(1, "path truncated: '%s'", path);
532 for (p = tmp + (tmp[0] == '/'); *p; p++) {
533 if (*p != '/')
534 continue;
535 *p = '\0';
536 if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
537 return -1;
538 *p = '/';
539 }
540 if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
541 return -1;
542 return 0;
543 }
544
545 void
546 printtimez(FILE *fp, const git_time *intime)
547 {
548 struct tm *intm;
549 time_t t;
550 char out[32];
551
552 t = (time_t)intime->time;
553 if (!(intm = gmtime(&t)))
554 return;
555 strftime(out, sizeof(out), "%Y-%m-%dT%H:%M:%SZ", intm);
556 fputs(out, fp);
557 }
558
559 void
560 printtime(FILE *fp, const git_time *intime)
561 {
562 struct tm *intm;
563 time_t t;
564 char out[32];
565
566 t = (time_t)intime->time + (intime->offset * 60);
567 if (!(intm = gmtime(&t)))
568 return;
569 strftime(out, sizeof(out), "%a, %e %b %Y %H:%M:%S", intm);
570 if (intime->offset < 0)
571 fprintf(fp, "%s -%02d%02d", out,
572 -(intime->offset) / 60, -(intime->offset) % 60);
573 else
574 fprintf(fp, "%s +%02d%02d", out,
575 intime->offset / 60, intime->offset % 60);
576 }
577
578 void
579 printtimeshort(FILE *fp, const git_time *intime)
580 {
581 struct tm *intm;
582 time_t t;
583 char out[32];
584
585 t = (time_t)intime->time;
586 if (!(intm = gmtime(&t)))
587 return;
588 strftime(out, sizeof(out), "%Y-%m-%d %H:%M", intm);
589 fputs(out, fp);
590 }
591
592 void
593 writeheader(FILE *fp, const char *title)
594 {
595 if (title[0] == '[')
596 fputs("[|", fp);
597 gphtext(fp, title, strlen(title));
598 if (title[0] && strippedname[0])
599 fputs(" - ", fp);
600 gphtext(fp, strippedname, strlen(strippedname));
601 if (description[0])
602 fputs(" - ", fp);
603 gphtext(fp, description, strlen(description));
604 fputs("\n", fp);
605 if (cloneurl[0]) {
606 fputs("[h|git clone ", fp);
607 gphlink(fp, cloneurl, strlen(cloneurl));
608 fputs("|URL:", fp);
609 gphlink(fp, cloneurl, strlen(cloneurl));
610 fputs("|server|port]\n", fp);
611 }
612 fprintf(fp, "[1|Log|%s/log.gph|server|port]\n", relpath);
613 fprintf(fp, "[1|Files|%s/files.gph|server|port]\n", relpath);
614 fprintf(fp, "[1|Refs|%s/refs.gph|server|port]\n", relpath);
615 if (submodules)
616 fprintf(fp, "[1|Submodules|%s/file/%s.gph|server|port]\n",
617 relpath, submodules);
618 if (readme)
619 fprintf(fp, "[1|README|%s/file/%s.gph|server|port]\n",
620 relpath, readme);
621 if (license)
622 fprintf(fp, "[1|LICENSE|%s/file/%s.gph|server|port]\n",
623 relpath, license);
624 fputs("---\n", fp);
625 }
626
627 void
628 writefooter(FILE *fp)
629 {
630 }
631
632 size_t
633 writeblobgph(FILE *fp, const git_blob *blob)
634 {
635 size_t n = 0, i, j, len, prev;
636 const char *nfmt = "%6zu ";
637 const char *s = git_blob_rawcontent(blob);
638
639 len = git_blob_rawsize(blob);
640 if (len > 0) {
641 for (i = 0, prev = 0; i < len; i++) {
642 if (s[i] != '\n')
643 continue;
644 n++;
645 fprintf(fp, nfmt, n, n, n);
646 for (j = prev; j <= i && s[j]; j++) {
647 switch (s[j]) {
648 case '\r': break;
649 case '\t': fputs(" ", fp); break;
650 default: putc(s[j], fp);
651 }
652 }
653 prev = i + 1;
654 }
655 /* trailing data */
656 if ((len - prev) > 0) {
657 n++;
658 fprintf(fp, nfmt, n, n, n);
659 for (j = prev; j < len - prev && s[j]; j++) {
660 switch (s[j]) {
661 case '\r': break;
662 case '\t': fputs(" ", fp); break;
663 default: putc(s[j], fp);
664 }
665 }
666 }
667 }
668
669 return n;
670 }
671
672 void
673 printcommit(FILE *fp, struct commitinfo *ci)
674 {
675 fprintf(fp, "[1|commit %s|%s/commit/%s.gph|server|port]\n",
676 ci->oid, relpath, ci->oid);
677
678 if (ci->parentoid[0])
679 fprintf(fp, "[1|parent %s|%s/commit/%s.gph|server|port]\n",
680 ci->parentoid, relpath, ci->parentoid);
681
682 if (ci->author) {
683 fputs("[h|Author: ", fp);
684 gphlink(fp, ci->author->name, strlen(ci->author->name));
685 fputs(" <", fp);
686 gphlink(fp, ci->author->email, strlen(ci->author->email));
687 fputs(">|URL:mailto:", fp);
688 gphlink(fp, ci->author->email, strlen(ci->author->email));
689 fputs("|server|port]\n", fp);
690 fputs("Date: ", fp);
691 printtime(fp, &(ci->author->when));
692 putc('\n', fp);
693 }
694 if (ci->msg) {
695 putc('\n', fp);
696 gphtextnl(fp, ci->msg, strlen(ci->msg));
697 putc('\n', fp);
698 }
699 }
700
701 void
702 printshowfile(FILE *fp, struct commitinfo *ci)
703 {
704 const git_diff_delta *delta;
705 const git_diff_hunk *hunk;
706 const git_diff_line *line;
707 git_patch *patch;
708 size_t nhunks, nhunklines, changed, add, del, total, i, j, k;
709 char buf[256], filename[256], linestr[32];
710 int c;
711
712 printcommit(fp, ci);
713
714 if (!ci->deltas)
715 return;
716
717 if (ci->filecount > 1000 ||
718 ci->ndeltas > 1000 ||
719 ci->addcount > 100000 ||
720 ci->delcount > 100000) {
721 fputs("\nDiff is too large, output suppressed.\n", fp);
722 return;
723 }
724
725 /* diff stat */
726 fputs("Diffstat:\n", fp);
727 for (i = 0; i < ci->ndeltas; i++) {
728 delta = git_patch_get_delta(ci->deltas[i]->patch);
729
730 switch (delta->status) {
731 case GIT_DELTA_ADDED: c = 'A'; break;
732 case GIT_DELTA_COPIED: c = 'C'; break;
733 case GIT_DELTA_DELETED: c = 'D'; break;
734 case GIT_DELTA_MODIFIED: c = 'M'; break;
735 case GIT_DELTA_RENAMED: c = 'R'; break;
736 case GIT_DELTA_TYPECHANGE: c = 'T'; break;
737 default: c = ' '; break;
738 }
739
740 if (strcmp(delta->old_file.path, delta->new_file.path)) {
741 snprintf(filename, sizeof(filename), "%s -> %s",
742 delta->old_file.path, delta->new_file.path);
743 utf8pad(buf, sizeof(buf), filename, 35, ' ');
744 } else {
745 utf8pad(buf, sizeof(buf), delta->old_file.path, 35, ' ');
746 }
747 fprintf(fp, " %c ", c);
748 gphtext(fp, buf, strlen(buf));
749
750 add = ci->deltas[i]->addcount;
751 del = ci->deltas[i]->delcount;
752 changed = add + del;
753 total = sizeof(linestr) - 2;
754 if (changed > total) {
755 if (add)
756 add = ((float)total / changed * add) + 1;
757 if (del)
758 del = ((float)total / changed * del) + 1;
759 }
760 memset(&linestr, '+', add);
761 memset(&linestr[add], '-', del);
762
763 fprintf(fp, " | %7zu ",
764 ci->deltas[i]->addcount + ci->deltas[i]->delcount);
765 fwrite(&linestr, 1, add, fp);
766 fwrite(&linestr[add], 1, del, fp);
767 fputs("\n", fp);
768 }
769 fprintf(fp, "\n%zu file%s changed, %zu insertion%s(+), %zu deletion%s(-)\n",
770 ci->filecount, ci->filecount == 1 ? "" : "s",
771 ci->addcount, ci->addcount == 1 ? "" : "s",
772 ci->delcount, ci->delcount == 1 ? "" : "s");
773
774 fputs("---\n", fp);
775
776 for (i = 0; i < ci->ndeltas; i++) {
777 patch = ci->deltas[i]->patch;
778 delta = git_patch_get_delta(patch);
779 /* NOTE: only links to new path */
780 fputs("[1|diff --git a/", fp);
781 gphlink(fp, delta->old_file.path, strlen(delta->old_file.path));
782 fputs(" b/", fp);
783 gphlink(fp, delta->new_file.path, strlen(delta->new_file.path));
784 fprintf(fp, "|%s/file/", relpath);
785 gphlink(fp, delta->new_file.path, strlen(delta->new_file.path));
786 fputs(".gph|server|port]\n", fp);
787
788 /* check binary data */
789 if (delta->flags & GIT_DIFF_FLAG_BINARY) {
790 fputs("Binary files differ.\n", fp);
791 continue;
792 }
793
794 nhunks = git_patch_num_hunks(patch);
795 for (j = 0; j < nhunks; j++) {
796 if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
797 break;
798
799 if (hunk->header_len > 0 && hunk->header[0] == '[')
800 fputs("[|", fp);
801 gphtext(fp, hunk->header, hunk->header_len);
802 putc('\n', fp);
803
804 for (k = 0; ; k++) {
805 if (git_patch_get_line_in_hunk(&line, patch, j, k))
806 break;
807 if (line->old_lineno == -1)
808 fputs("+", fp);
809 else if (line->new_lineno == -1)
810 fputs("-", fp);
811 else
812 fputs(" ", fp);
813 gphtext(fp, line->content, line->content_len);
814 putc('\n', fp);
815 }
816 }
817 }
818 }
819
820 void
821 writelogline(FILE *fp, struct commitinfo *ci)
822 {
823 char buf[256];
824
825 fputs("[1|", fp);
826 if (ci->author)
827 printtimeshort(fp, &(ci->author->when));
828 else
829 fputs(" ", fp);
830 fputs(" ", fp);
831 utf8pad(buf, sizeof(buf), ci->summary ? ci->summary : "", 40, ' ');
832 gphlink(fp, buf, strlen(buf));
833 fputs(" ", fp);
834 utf8pad(buf, sizeof(buf), ci->author ? ci->author->name : "", 19, '\0');
835 gphlink(fp, buf, strlen(buf));
836 fprintf(fp, "|%s/commit/%s.gph|server|port]\n", relpath, ci->oid);
837 }
838
839 int
840 writelog(FILE *fp, const git_oid *oid)
841 {
842 struct commitinfo *ci;
843 git_revwalk *w = NULL;
844 git_oid id;
845 char path[PATH_MAX], oidstr[GIT_OID_HEXSZ + 1];
846 FILE *fpfile;
847 size_t remcommits = 0;
848 int r;
849
850 git_revwalk_new(&w, repo);
851 git_revwalk_push(w, oid);
852
853 while (!git_revwalk_next(&id, w)) {
854 if (cachefile && !memcmp(&id, &lastoid, sizeof(id)))
855 break;
856
857 git_oid_tostr(oidstr, sizeof(oidstr), &id);
858 r = snprintf(path, sizeof(path), "commit/%s.gph", oidstr);
859 if (r < 0 || (size_t)r >= sizeof(path))
860 errx(1, "path truncated: 'commit/%s.gph'", oidstr);
861 r = access(path, F_OK);
862
863 /* optimization: if there are no log lines to write and
864 the commit file already exists: skip the diffstat */
865 if (!nlogcommits) {
866 remcommits++;
867 if (!r)
868 continue;
869 }
870
871 if (!(ci = commitinfo_getbyoid(&id)))
872 break;
873
874 if (nlogcommits != 0) {
875 writelogline(fp, ci);
876 if (nlogcommits > 0)
877 nlogcommits--;
878 }
879
880 if (cachefile)
881 writelogline(wcachefp, ci);
882
883 /* check if file exists if so skip it */
884 if (r) {
885 /* lookup stats: only required here for gopher */
886 if (commitinfo_getstats(ci) == -1)
887 goto err;
888
889 fpfile = efopen(path, "w");
890 writeheader(fpfile, ci->summary);
891 printshowfile(fpfile, ci);
892 writefooter(fpfile);
893 checkfileerror(fpfile, path, 'w');
894 fclose(fpfile);
895 }
896 err:
897 commitinfo_free(ci);
898 }
899 git_revwalk_free(w);
900
901 if (nlogcommits == 0 && remcommits != 0) {
902 fprintf(fp, "%16.16s "
903 "%zu more commits remaining, fetch the repository\n",
904 "", remcommits);
905 }
906
907 return 0;
908 }
909
910 void
911 printcommitatom(FILE *fp, struct commitinfo *ci, const char *tag)
912 {
913 fputs("<entry>\n", fp);
914
915 fprintf(fp, "<id>%s</id>\n", ci->oid);
916 if (ci->author) {
917 fputs("<published>", fp);
918 printtimez(fp, &(ci->author->when));
919 fputs("</published>\n", fp);
920 }
921 if (ci->committer) {
922 fputs("<updated>", fp);
923 printtimez(fp, &(ci->committer->when));
924 fputs("</updated>\n", fp);
925 }
926 if (ci->summary) {
927 fputs("<title>", fp);
928 if (tag && tag[0]) {
929 fputs("[", fp);
930 xmlencode(fp, tag, strlen(tag));
931 fputs("] ", fp);
932 }
933 xmlencode(fp, ci->summary, strlen(ci->summary));
934 fputs("</title>\n", fp);
935 }
936 fprintf(fp, "<link rel=\"alternate\" href=\"%scommit/%s.gph\" />\n",
937 baseurl, ci->oid);
938
939 if (ci->author) {
940 fputs("<author>\n<name>", fp);
941 xmlencode(fp, ci->author->name, strlen(ci->author->name));
942 fputs("</name>\n<email>", fp);
943 xmlencode(fp, ci->author->email, strlen(ci->author->email));
944 fputs("</email>\n</author>\n", fp);
945 }
946
947 fputs("<content>", fp);
948 fprintf(fp, "commit %s\n", ci->oid);
949 if (ci->parentoid[0])
950 fprintf(fp, "parent %s\n", ci->parentoid);
951 if (ci->author) {
952 fputs("Author: ", fp);
953 xmlencode(fp, ci->author->name, strlen(ci->author->name));
954 fputs(" <", fp);
955 xmlencode(fp, ci->author->email, strlen(ci->author->email));
956 fputs(">\nDate: ", fp);
957 printtime(fp, &(ci->author->when));
958 putc('\n', fp);
959 }
960 if (ci->msg) {
961 putc('\n', fp);
962 xmlencode(fp, ci->msg, strlen(ci->msg));
963 }
964 fputs("\n</content>\n</entry>\n", fp);
965 }
966
967 int
968 writeatom(FILE *fp, int all)
969 {
970 struct referenceinfo *ris = NULL;
971 size_t refcount = 0;
972 struct commitinfo *ci;
973 git_revwalk *w = NULL;
974 git_oid id;
975 size_t i, m = 100; /* last 'm' commits */
976
977 fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
978 "<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
979 xmlencode(fp, strippedname, strlen(strippedname));
980 fputs(", branch HEAD</title>\n<subtitle>", fp);
981 xmlencode(fp, description, strlen(description));
982 fputs("</subtitle>\n", fp);
983
984 /* all commits or only tags? */
985 if (all) {
986 git_revwalk_new(&w, repo);
987 git_revwalk_push_head(w);
988 for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
989 if (!(ci = commitinfo_getbyoid(&id)))
990 break;
991 printcommitatom(fp, ci, "");
992 commitinfo_free(ci);
993 }
994 git_revwalk_free(w);
995 } else if (getrefs(&ris, &refcount) != -1) {
996 /* references: tags */
997 for (i = 0; i < refcount; i++) {
998 if (git_reference_is_tag(ris[i].ref))
999 printcommitatom(fp, ris[i].ci,
1000 git_reference_shorthand(ris[i].ref));
1001
1002 commitinfo_free(ris[i].ci);
1003 git_reference_free(ris[i].ref);
1004 }
1005 free(ris);
1006 }
1007
1008 fputs("</feed>\n", fp);
1009
1010 return 0;
1011 }
1012
1013 size_t
1014 writeblob(git_object *obj, const char *fpath, const char *filename, size_t filesize)
1015 {
1016 char tmp[PATH_MAX] = "", *d;
1017 size_t lc = 0;
1018 FILE *fp;
1019
1020 if (strlcpy(tmp, fpath, sizeof(tmp)) >= sizeof(tmp))
1021 errx(1, "path truncated: '%s'", fpath);
1022 if (!(d = dirname(tmp)))
1023 err(1, "dirname");
1024 if (mkdirp(d))
1025 return -1;
1026
1027 fp = efopen(fpath, "w");
1028 writeheader(fp, filename);
1029 if (filename[0] == '[')
1030 fputs("[|", fp);
1031 gphtext(fp, filename, strlen(filename));
1032 fprintf(fp, " (%zuB)\n", filesize);
1033 fputs("---\n", fp);
1034
1035 if (git_blob_is_binary((git_blob *)obj))
1036 fputs("Binary file.\n", fp);
1037 else
1038 lc = writeblobgph(fp, (git_blob *)obj);
1039
1040 writefooter(fp);
1041 checkfileerror(fp, fpath, 'w');
1042 fclose(fp);
1043
1044 return lc;
1045 }
1046
1047 const char *
1048 filemode(git_filemode_t m)
1049 {
1050 static char mode[11];
1051
1052 memset(mode, '-', sizeof(mode) - 1);
1053 mode[10] = '\0';
1054
1055 if (S_ISREG(m))
1056 mode[0] = '-';
1057 else if (S_ISBLK(m))
1058 mode[0] = 'b';
1059 else if (S_ISCHR(m))
1060 mode[0] = 'c';
1061 else if (S_ISDIR(m))
1062 mode[0] = 'd';
1063 else if (S_ISFIFO(m))
1064 mode[0] = 'p';
1065 else if (S_ISLNK(m))
1066 mode[0] = 'l';
1067 else if (S_ISSOCK(m))
1068 mode[0] = 's';
1069 else
1070 mode[0] = '?';
1071
1072 if (m & S_IRUSR) mode[1] = 'r';
1073 if (m & S_IWUSR) mode[2] = 'w';
1074 if (m & S_IXUSR) mode[3] = 'x';
1075 if (m & S_IRGRP) mode[4] = 'r';
1076 if (m & S_IWGRP) mode[5] = 'w';
1077 if (m & S_IXGRP) mode[6] = 'x';
1078 if (m & S_IROTH) mode[7] = 'r';
1079 if (m & S_IWOTH) mode[8] = 'w';
1080 if (m & S_IXOTH) mode[9] = 'x';
1081
1082 if (m & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
1083 if (m & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
1084 if (m & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T';
1085
1086 return mode;
1087 }
1088
1089 int
1090 writefilestree(FILE *fp, git_tree *tree, const char *path)
1091 {
1092 const git_tree_entry *entry = NULL;
1093 git_object *obj = NULL;
1094 const char *entryname;
1095 char buf[256], filepath[PATH_MAX], entrypath[PATH_MAX], oid[8];
1096 size_t count, i, lc, filesize;
1097 int r, ret;
1098
1099 count = git_tree_entrycount(tree);
1100 for (i = 0; i < count; i++) {
1101 if (!(entry = git_tree_entry_byindex(tree, i)) ||
1102 !(entryname = git_tree_entry_name(entry)))
1103 return -1;
1104 joinpath(entrypath, sizeof(entrypath), path, entryname);
1105
1106 r = snprintf(filepath, sizeof(filepath), "file/%s.gph",
1107 entrypath);
1108 if (r < 0 || (size_t)r >= sizeof(filepath))
1109 errx(1, "path truncated: 'file/%s.gph'", entrypath);
1110
1111 if (!git_tree_entry_to_object(&obj, repo, entry)) {
1112 switch (git_object_type(obj)) {
1113 case GIT_OBJ_BLOB:
1114 break;
1115 case GIT_OBJ_TREE:
1116 /* NOTE: recurses */
1117 ret = writefilestree(fp, (git_tree *)obj,
1118 entrypath);
1119 git_object_free(obj);
1120 if (ret)
1121 return ret;
1122 continue;
1123 default:
1124 git_object_free(obj);
1125 continue;
1126 }
1127
1128 filesize = git_blob_rawsize((git_blob *)obj);
1129 lc = writeblob(obj, filepath, entryname, filesize);
1130
1131 fputs("[1|", fp);
1132 fputs(filemode(git_tree_entry_filemode(entry)), fp);
1133 fputs(" ", fp);
1134 utf8pad(buf, sizeof(buf), entrypath, 50, ' ');
1135 gphlink(fp, buf, strlen(buf));
1136 fputs(" ", fp);
1137 if (lc > 0)
1138 fprintf(fp, "%7zuL", lc);
1139 else
1140 fprintf(fp, "%7zuB", filesize);
1141 fprintf(fp, "|%s/", relpath);
1142 gphlink(fp, filepath, strlen(filepath));
1143 fputs("|server|port]\n", fp);
1144 git_object_free(obj);
1145 } else if (git_tree_entry_type(entry) == GIT_OBJ_COMMIT) {
1146 /* commit object in tree is a submodule */
1147 fputs("[1|m--------- ", fp);
1148 gphlink(fp, entrypath, strlen(entrypath));
1149 fputs(" @ ", fp);
1150 git_oid_tostr(oid, sizeof(oid), git_tree_entry_id(entry));
1151 gphlink(fp, oid, strlen(oid));
1152 fprintf(fp, "|%s/file/.gitmodules.gph|server|port]\n", relpath);
1153 /* NOTE: linecount omitted */
1154 }
1155 }
1156
1157 return 0;
1158 }
1159
1160 int
1161 writefiles(FILE *fp, const git_oid *id)
1162 {
1163 git_tree *tree = NULL;
1164 git_commit *commit = NULL;
1165 int ret = -1;
1166
1167 fprintf(fp, "%-10.10s ", "Mode");
1168 fprintf(fp, "%-50.50s ", "Name");
1169 fprintf(fp, "%8.8s\n", "Size");
1170
1171 if (!git_commit_lookup(&commit, repo, id) &&
1172 !git_commit_tree(&tree, commit))
1173 ret = writefilestree(fp, tree, "");
1174
1175 git_commit_free(commit);
1176 git_tree_free(tree);
1177
1178 return ret;
1179 }
1180
1181 int
1182 writerefs(FILE *fp)
1183 {
1184 struct referenceinfo *ris = NULL;
1185 struct commitinfo *ci;
1186 size_t count, i, j, refcount;
1187 const char *titles[] = { "Branches", "Tags" };
1188 const char *s;
1189 char buf[256];
1190
1191 if (getrefs(&ris, &refcount) == -1)
1192 return -1;
1193
1194 for (i = 0, j = 0, count = 0; i < refcount; i++) {
1195 if (j == 0 && git_reference_is_tag(ris[i].ref)) {
1196 /* table footer */
1197 if (count)
1198 fputs("\n", fp);
1199 count = 0;
1200 j = 1;
1201 }
1202
1203 /* print header if it has an entry (first). */
1204 if (++count == 1) {
1205 fprintf(fp, "%s\n", titles[j]);
1206 fprintf(fp, " %-32.32s", "Name");
1207 fprintf(fp, " %-16.16s", "Last commit date");
1208 fprintf(fp, " %s\n", "Author");
1209 }
1210
1211 ci = ris[i].ci;
1212 s = git_reference_shorthand(ris[i].ref);
1213
1214 fputs(" ", fp);
1215 utf8pad(buf, sizeof(buf), s, 32, ' ');
1216 gphlink(fp, buf, strlen(buf));
1217 fputs(" ", fp);
1218 if (ci->author)
1219 printtimeshort(fp, &(ci->author->when));
1220 else
1221 fputs(" ", fp);
1222 fputs(" ", fp);
1223 if (ci->author) {
1224 utf8pad(buf, sizeof(buf), ci->author->name, 25, '\0');
1225 gphlink(fp, buf, strlen(buf));
1226 }
1227 fputs("\n", fp);
1228 }
1229 /* table footer */
1230 if (count)
1231 fputs("\n", fp);
1232
1233 for (i = 0; i < refcount; i++) {
1234 commitinfo_free(ris[i].ci);
1235 git_reference_free(ris[i].ref);
1236 }
1237 free(ris);
1238
1239 return 0;
1240 }
1241
1242 void
1243 usage(char *argv0)
1244 {
1245 fprintf(stderr, "usage: %s [-b baseprefix] [-c cachefile | -l commits] "
1246 "[-u baseurl] repodir\n", argv0);
1247 exit(1);
1248 }
1249
1250 int
1251 main(int argc, char *argv[])
1252 {
1253 git_object *obj = NULL;
1254 const git_oid *head = NULL;
1255 mode_t mask;
1256 FILE *fp, *fpread;
1257 char path[PATH_MAX], repodirabs[PATH_MAX + 1], *p;
1258 char tmppath[64] = "cache.XXXXXXXXXXXX", buf[BUFSIZ];
1259 size_t n;
1260 int i, fd;
1261
1262 setlocale(LC_CTYPE, "");
1263
1264 for (i = 1; i < argc; i++) {
1265 if (argv[i][0] != '-') {
1266 if (repodir)
1267 usage(argv[0]);
1268 repodir = argv[i];
1269 } else if (argv[i][1] == 'b') {
1270 if (i + 1 >= argc)
1271 usage(argv[0]);
1272 relpath = argv[++i];
1273 } else if (argv[i][1] == 'c') {
1274 if (nlogcommits > 0 || i + 1 >= argc)
1275 usage(argv[0]);
1276 cachefile = argv[++i];
1277 } else if (argv[i][1] == 'l') {
1278 if (cachefile || i + 1 >= argc)
1279 usage(argv[0]);
1280 errno = 0;
1281 nlogcommits = strtoll(argv[++i], &p, 10);
1282 if (argv[i][0] == '\0' || *p != '\0' ||
1283 nlogcommits <= 0 || errno)
1284 usage(argv[0]);
1285 } else if (argv[i][1] == 'u') {
1286 if (i + 1 >= argc)
1287 usage(argv[0]);
1288 baseurl = argv[++i];
1289 }
1290 }
1291 if (!repodir)
1292 usage(argv[0]);
1293
1294 if (!realpath(repodir, repodirabs))
1295 err(1, "realpath");
1296
1297 /* do not search outside the git repository:
1298 GIT_CONFIG_LEVEL_APP is the highest level currently */
1299 git_libgit2_init();
1300 for (i = 1; i <= GIT_CONFIG_LEVEL_APP; i++)
1301 git_libgit2_opts(GIT_OPT_SET_SEARCH_PATH, i, "");
1302 /* do not require the git repository to be owned by the current user */
1303 git_libgit2_opts(GIT_OPT_SET_OWNER_VALIDATION, 0);
1304
1305 #ifdef __OpenBSD__
1306 if (unveil(repodir, "r") == -1)
1307 err(1, "unveil: %s", repodir);
1308 if (unveil(".", "rwc") == -1)
1309 err(1, "unveil: .");
1310 if (cachefile && unveil(cachefile, "rwc") == -1)
1311 err(1, "unveil: %s", cachefile);
1312
1313 if (cachefile) {
1314 if (pledge("stdio rpath wpath cpath fattr", NULL) == -1)
1315 err(1, "pledge");
1316 } else {
1317 if (pledge("stdio rpath wpath cpath", NULL) == -1)
1318 err(1, "pledge");
1319 }
1320 #endif
1321
1322 if (git_repository_open_ext(&repo, repodir,
1323 GIT_REPOSITORY_OPEN_NO_SEARCH, NULL) < 0) {
1324 fprintf(stderr, "%s: cannot open repository\n", argv[0]);
1325 return 1;
1326 }
1327
1328 /* find HEAD */
1329 if (!git_revparse_single(&obj, repo, "HEAD"))
1330 head = git_object_id(obj);
1331 git_object_free(obj);
1332
1333 /* use directory name as name */
1334 if ((name = strrchr(repodirabs, '/')))
1335 name++;
1336 else
1337 name = "";
1338
1339 /* strip .git suffix */
1340 if (!(strippedname = strdup(name)))
1341 err(1, "strdup");
1342 if ((p = strrchr(strippedname, '.')))
1343 if (!strcmp(p, ".git"))
1344 *p = '\0';
1345
1346 /* read description or .git/description */
1347 joinpath(path, sizeof(path), repodir, "description");
1348 if (!(fpread = fopen(path, "r"))) {
1349 joinpath(path, sizeof(path), repodir, ".git/description");
1350 fpread = fopen(path, "r");
1351 }
1352 if (fpread) {
1353 if (!fgets(description, sizeof(description), fpread))
1354 description[0] = '\0';
1355 checkfileerror(fpread, path, 'r');
1356 fclose(fpread);
1357 }
1358
1359 /* read url or .git/url */
1360 joinpath(path, sizeof(path), repodir, "url");
1361 if (!(fpread = fopen(path, "r"))) {
1362 joinpath(path, sizeof(path), repodir, ".git/url");
1363 fpread = fopen(path, "r");
1364 }
1365 if (fpread) {
1366 if (!fgets(cloneurl, sizeof(cloneurl), fpread))
1367 cloneurl[0] = '\0';
1368 checkfileerror(fpread, path, 'r');
1369 fclose(fpread);
1370 cloneurl[strcspn(cloneurl, "\n")] = '\0';
1371 }
1372
1373 /* check LICENSE */
1374 for (i = 0; i < LEN(licensefiles) && !license; i++) {
1375 if (!git_revparse_single(&obj, repo, licensefiles[i]) &&
1376 git_object_type(obj) == GIT_OBJ_BLOB)
1377 license = licensefiles[i] + strlen("HEAD:");
1378 git_object_free(obj);
1379 }
1380
1381 /* check README */
1382 for (i = 0; i < LEN(readmefiles) && !readme; i++) {
1383 if (!git_revparse_single(&obj, repo, readmefiles[i]) &&
1384 git_object_type(obj) == GIT_OBJ_BLOB)
1385 readme = readmefiles[i] + strlen("HEAD:");
1386 git_object_free(obj);
1387 }
1388
1389 if (!git_revparse_single(&obj, repo, "HEAD:.gitmodules") &&
1390 git_object_type(obj) == GIT_OBJ_BLOB)
1391 submodules = ".gitmodules";
1392 git_object_free(obj);
1393
1394 /* log for HEAD */
1395 fp = efopen("log.gph", "w");
1396 mkdir("commit", S_IRWXU | S_IRWXG | S_IRWXO);
1397 writeheader(fp, "Log");
1398
1399 fprintf(fp, "%-16.16s ", "Date");
1400 fprintf(fp, "%-40.40s ", "Commit message");
1401 fprintf(fp, "%s\n", "Author");
1402
1403 if (cachefile && head) {
1404 /* read from cache file (does not need to exist) */
1405 if ((rcachefp = fopen(cachefile, "r"))) {
1406 if (!fgets(lastoidstr, sizeof(lastoidstr), rcachefp))
1407 errx(1, "%s: no object id", cachefile);
1408 if (git_oid_fromstr(&lastoid, lastoidstr))
1409 errx(1, "%s: invalid object id", cachefile);
1410 }
1411
1412 /* write log to (temporary) cache */
1413 if ((fd = mkstemp(tmppath)) == -1)
1414 err(1, "mkstemp");
1415 if (!(wcachefp = fdopen(fd, "w")))
1416 err(1, "fdopen: '%s'", tmppath);
1417 /* write last commit id (HEAD) */
1418 git_oid_tostr(buf, sizeof(buf), head);
1419 fprintf(wcachefp, "%s\n", buf);
1420
1421 writelog(fp, head);
1422
1423 if (rcachefp) {
1424 /* append previous log to log.gph and the new cache */
1425 while (!feof(rcachefp)) {
1426 n = fread(buf, 1, sizeof(buf), rcachefp);
1427 if (ferror(rcachefp))
1428 break;
1429 if (fwrite(buf, 1, n, fp) != n ||
1430 fwrite(buf, 1, n, wcachefp) != n)
1431 break;
1432 }
1433 checkfileerror(rcachefp, cachefile, 'r');
1434 fclose(rcachefp);
1435 }
1436 checkfileerror(wcachefp, tmppath, 'w');
1437 fclose(wcachefp);
1438 } else {
1439 if (head)
1440 writelog(fp, head);
1441 }
1442 fputs("\n", fp);
1443 fprintf(fp, "[0|Atom feed|%s/atom.xml|server|port]\n", relpath);
1444 fprintf(fp, "[0|Atom feed (tags)|%s/tags.xml|server|port]\n", relpath);
1445 writefooter(fp);
1446 checkfileerror(fp, "log.gph", 'w');
1447 fclose(fp);
1448
1449 /* files for HEAD */
1450 fp = efopen("files.gph", "w");
1451 writeheader(fp, "Files");
1452 if (head)
1453 writefiles(fp, head);
1454 writefooter(fp);
1455 checkfileerror(fp, "files.gph", 'w');
1456 fclose(fp);
1457
1458 /* summary page with branches and tags */
1459 fp = efopen("refs.gph", "w");
1460 writeheader(fp, "Refs");
1461 writerefs(fp);
1462 writefooter(fp);
1463 checkfileerror(fp, "refs.gph", 'w');
1464 fclose(fp);
1465
1466 /* Atom feed */
1467 fp = efopen("atom.xml", "w");
1468 writeatom(fp, 1);
1469 checkfileerror(fp, "atom.xml", 'w');
1470 fclose(fp);
1471
1472 /* Atom feed for tags / releases */
1473 fp = efopen("tags.xml", "w");
1474 writeatom(fp, 0);
1475 checkfileerror(fp, "tags.xml", 'w');
1476 fclose(fp);
1477
1478 /* rename new cache file on success */
1479 if (cachefile && head) {
1480 if (rename(tmppath, cachefile))
1481 err(1, "rename: '%s' to '%s'", tmppath, cachefile);
1482 umask((mask = umask(0)));
1483 if (chmod(cachefile,
1484 (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) & ~mask))
1485 err(1, "chmod: '%s'", cachefile);
1486 }
1487
1488 /* cleanup */
1489 git_repository_free(repo);
1490 git_libgit2_shutdown();
1491
1492 return 0;
1493 }