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	stagit.c - stagit - static git page generator
	git clone git://git.codemadness.org/stagit
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	---
	stagit.c (36246B)
	---
	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 U…
	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…
	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] != '/' ? "/" : "…
	99 if (r < 0 \|\| (size_t)r >= bufsiz)
	100 errx(1, "path truncated: '%s%s%s'",
	101 path, path[0] && path[strlen(path) - 1] != '/' ?…
	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…
	128 goto err;
	129 if (!git_commit_parent(&(ci->parent), ci->commit, 0)) {
	130 if (git_tree_lookup(&(ci->parent_tree), repo, git_commit…
	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…
	141 goto err;
	142
	143 if (git_diff_find_init_options(&fopts, GIT_DIFF_FIND_OPTIONS_VER…
	144 goto err;
	145 /* find renames and copies, exact matches (no heuristic) for ren…
	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 delt…
	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…
	173 break;
	174 for (k = 0; ; k++) {
	175 if (git_patch_get_line_in_hunk(&line, pa…
	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_p…
	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…
	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_t…
	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', …
	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…
	444 return -1;
	445 *p = '/';
	446 }
	447 if (mkdir(tmp, S_IRWXU \| S_IRWXG \| S_IRWXO) < 0 && errno != EEXI…
	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) % …
	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; …
	505 "<meta name=\"viewport\" content=\"width=device-width, i…
	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\" hre…
	515 fputs("<link rel=\"alternate\" type=\"application/atom+xml\" tit…
	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\" tit…
	519 xmlencode(fp, name, strlen(name));
	520 fprintf(fp, " Atom Feed (tags)\" href=\"%stags.xml\" />\n", relp…
	521 fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%…
	522 fputs("</head>\n<body>\n<table><tr><td>", fp);
	523 fprintf(fp, "<a href=\"../%s\"><img src=\"%slogo.png\" alt=\"\" …
	524 relpath, relpath);
	525 fputs("</td><td><h1>", fp);
	526 xmlencode(fp, strippedname, strlen(strippedname));
	527 fputs("</h1><span class=\"desc\">", fp);
	528 xmlencode(fp, description, strlen(description));
	529 fputs("</span></td></tr>", fp);
	530 if (cloneurl[0]) {
	531 fputs("<tr class=\"url\"><td></td><td>git clone <a href=…
	532 xmlencode(fp, cloneurl, strlen(cloneurl)); /* not percen…
	533 fputs("\">", fp);
	534 xmlencode(fp, cloneurl, strlen(cloneurl));
	535 fputs("</a></td></tr>", fp);
	536 }
	537 fputs("<tr><td></td><td>\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></table>\n<hr/>\n<div id=\"content\">\n", fp);
	551 }
	552
	553 void
	554 writefooter(FILE *fp)
	555 {
	556 fputs("</div>\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\"…
	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\">…
	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->emai…
	607 fputs("\">", fp);
	608 xmlencode(fp, ci->author->email, strlen(ci->author->emai…
	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_fi…
	665 if (strcmp(delta->old_file.path, delta->new_file.path)) {
	666 fputs(" -> ", fp);
	667 xmlencode(fp, delta->new_file.path, strlen(delta…
	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<…
	684 ci->deltas[i]->addcount + ci->deltas[i]->delcoun…
	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 insertio…
	691 ci->filecount, ci->filecount == 1 ? "" : "s",
	692 ci->addcount, ci->addcount == 1 ? "" : "s",
	693 ci->delcount, ci->delcount == 1 ? "" : "s");
	694
	695 fputs("<hr/>", fp);
	696
	697 for (i = 0; i < ci->ndeltas; i++) {
	698 patch = ci->deltas[i]->patch;
	699 delta = git_patch_get_delta(patch);
	700 fprintf(fp, "<b>diff --git a/<a id=\"h%zu\" href=\"%sfil…
	701 percentencode(fp, delta->old_file.path, strlen(delta->ol…
	702 fputs(".html\">", fp);
	703 xmlencode(fp, delta->old_file.path, strlen(delta->old_fi…
	704 fprintf(fp, "</a> b/<a href=\"%sfile/", relpath);
	705 percentencode(fp, delta->new_file.path, strlen(delta->ne…
	706 fprintf(fp, ".html\">");
	707 xmlencode(fp, delta->new_file.path, strlen(delta->new_fi…
	708 fprintf(fp, "</a></b>\n");
	709
	710 /* check binary data */
	711 if (delta->flags & GIT_DIFF_FLAG_BINARY) {
	712 fputs("Binary files differ.\n", fp);
	713 continue;
	714 }
	715
	716 nhunks = git_patch_num_hunks(patch);
	717 for (j = 0; j < nhunks; j++) {
	718 if (git_patch_get_hunk(&hunk, &nhunklines, patch…
	719 break;
	720
	721 fprintf(fp, "<a href=\"#h%zu-%zu\" id=\"h%zu-%zu…
	722 xmlencode(fp, hunk->header, hunk->header_len);
	723 fputs("</a>", fp);
	724
	725 for (k = 0; ; k++) {
	726 if (git_patch_get_line_in_hunk(&line, pa…
	727 break;
	728 if (line->old_lineno == -1)
	729 fprintf(fp, "<a href=\"#h%zu-%zu…
	730 i, j, k, i, j, k);
	731 else if (line->new_lineno == -1)
	732 fprintf(fp, "<a href=\"#h%zu-%zu…
	733 i, j, k, i, j, k);
	734 else
	735 putc(' ', fp);
	736 xmlencodeline(fp, line->content, line->c…
	737 putc('\n', fp);
	738 if (line->old_lineno == -1 \|\| line->new_…
	739 fputs("</a>", fp);
	740 }
	741 }
	742 }
	743 }
	744
	745 void
	746 writelogline(FILE fp, struct commitinfo ci)
	747 {
	748 fputs("<tr><td>", fp);
	749 if (ci->author)
	750 printtimeshort(fp, &(ci->author->when));
	751 fputs("</td><td>", fp);
	752 if (ci->summary) {
	753 fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci…
	754 xmlencode(fp, ci->summary, strlen(ci->summary));
	755 fputs("</a>", fp);
	756 }
	757 fputs("</td><td>", fp);
	758 if (ci->author)
	759 xmlencode(fp, ci->author->name, strlen(ci->author->name)…
	760 fputs("</td><td class=\"num\" align=\"right\">", fp);
	761 fprintf(fp, "%zu", ci->filecount);
	762 fputs("</td><td class=\"num\" align=\"right\">", fp);
	763 fprintf(fp, "+%zu", ci->addcount);
	764 fputs("</td><td class=\"num\" align=\"right\">", fp);
	765 fprintf(fp, "-%zu", ci->delcount);
	766 fputs("</td></tr>\n", fp);
	767 }
	768
	769 int
	770 writelog(FILE fp, const git_oid oid)
	771 {
	772 struct commitinfo *ci;
	773 git_revwalk *w = NULL;
	774 git_oid id;
	775 char path[PATH_MAX], oidstr[GIT_OID_HEXSZ + 1];
	776 FILE *fpfile;
	777 size_t remcommits = 0;
	778 int r;
	779
	780 git_revwalk_new(&w, repo);
	781 git_revwalk_push(w, oid);
	782
	783 while (!git_revwalk_next(&id, w)) {
	784 relpath = "";
	785
	786 if (cachefile && !memcmp(&id, &lastoid, sizeof(id)))
	787 break;
	788
	789 git_oid_tostr(oidstr, sizeof(oidstr), &id);
	790 r = snprintf(path, sizeof(path), "commit/%s.html", oidst…
	791 if (r < 0 \|\| (size_t)r >= sizeof(path))
	792 errx(1, "path truncated: 'commit/%s.html'", oids…
	793 r = access(path, F_OK);
	794
	795 /* optimization: if there are no log lines to write and
	796 the commit file already exists: skip the diffstat */
	797 if (!nlogcommits) {
	798 remcommits++;
	799 if (!r)
	800 continue;
	801 }
	802
	803 if (!(ci = commitinfo_getbyoid(&id)))
	804 break;
	805 /* diffstat: for stagit HTML required for the log.html l…
	806 if (commitinfo_getstats(ci) == -1)
	807 goto err;
	808
	809 if (nlogcommits != 0) {
	810 writelogline(fp, ci);
	811 if (nlogcommits > 0)
	812 nlogcommits--;
	813 }
	814
	815 if (cachefile)
	816 writelogline(wcachefp, ci);
	817
	818 /* check if file exists if so skip it */
	819 if (r) {
	820 relpath = "../";
	821 fpfile = efopen(path, "w");
	822 writeheader(fpfile, ci->summary);
	823 fputs("<pre>", fpfile);
	824 printshowfile(fpfile, ci);
	825 fputs("</pre>\n", fpfile);
	826 writefooter(fpfile);
	827 checkfileerror(fpfile, path, 'w');
	828 fclose(fpfile);
	829 }
	830 err:
	831 commitinfo_free(ci);
	832 }
	833 git_revwalk_free(w);
	834
	835 if (nlogcommits == 0 && remcommits != 0) {
	836 fprintf(fp, "<tr><td></td><td colspan=\"5\">"
	837 "%zu more commits remaining, fetch the repositor…
	838 "</td></tr>\n", remcommits);
	839 }
	840
	841 relpath = "";
	842
	843 return 0;
	844 }
	845
	846 void
	847 printcommitatom(FILE fp, struct commitinfo ci, const char *tag)
	848 {
	849 fputs("<entry>\n", fp);
	850
	851 fprintf(fp, "<id>%s</id>\n", ci->oid);
	852 if (ci->author) {
	853 fputs("<published>", fp);
	854 printtimez(fp, &(ci->author->when));
	855 fputs("</published>\n", fp);
	856 }
	857 if (ci->committer) {
	858 fputs("<updated>", fp);
	859 printtimez(fp, &(ci->committer->when));
	860 fputs("</updated>\n", fp);
	861 }
	862 if (ci->summary) {
	863 fputs("<title>", fp);
	864 if (tag && tag[0]) {
	865 fputs("[", fp);
	866 xmlencode(fp, tag, strlen(tag));
	867 fputs("] ", fp);
	868 }
	869 xmlencode(fp, ci->summary, strlen(ci->summary));
	870 fputs("</title>\n", fp);
	871 }
	872 fprintf(fp, "<link rel=\"alternate\" type=\"text/html\" href=\"%…
	873 baseurl, ci->oid);
	874
	875 if (ci->author) {
	876 fputs("<author>\n<name>", fp);
	877 xmlencode(fp, ci->author->name, strlen(ci->author->name)…
	878 fputs("</name>\n<email>", fp);
	879 xmlencode(fp, ci->author->email, strlen(ci->author->emai…
	880 fputs("</email>\n</author>\n", fp);
	881 }
	882
	883 fputs("<content>", fp);
	884 fprintf(fp, "commit %s\n", ci->oid);
	885 if (ci->parentoid[0])
	886 fprintf(fp, "parent %s\n", ci->parentoid);
	887 if (ci->author) {
	888 fputs("Author: ", fp);
	889 xmlencode(fp, ci->author->name, strlen(ci->author->name)…
	890 fputs(" <", fp);
	891 xmlencode(fp, ci->author->email, strlen(ci->author->emai…
	892 fputs(">\nDate: ", fp);
	893 printtime(fp, &(ci->author->when));
	894 putc('\n', fp);
	895 }
	896 if (ci->msg) {
	897 putc('\n', fp);
	898 xmlencode(fp, ci->msg, strlen(ci->msg));
	899 }
	900 fputs("\n</content>\n</entry>\n", fp);
	901 }
	902
	903 int
	904 writeatom(FILE *fp, int all)
	905 {
	906 struct referenceinfo *ris = NULL;
	907 size_t refcount = 0;
	908 struct commitinfo *ci;
	909 git_revwalk *w = NULL;
	910 git_oid id;
	911 size_t i, m = 100; /* last 'm' commits */
	912
	913 fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
	914 "<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", f…
	915 xmlencode(fp, strippedname, strlen(strippedname));
	916 fputs(", branch HEAD</title>\n<subtitle>", fp);
	917 xmlencode(fp, description, strlen(description));
	918 fputs("</subtitle>\n", fp);
	919
	920 /* all commits or only tags? */
	921 if (all) {
	922 git_revwalk_new(&w, repo);
	923 git_revwalk_push_head(w);
	924 for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
	925 if (!(ci = commitinfo_getbyoid(&id)))
	926 break;
	927 printcommitatom(fp, ci, "");
	928 commitinfo_free(ci);
	929 }
	930 git_revwalk_free(w);
	931 } else if (getrefs(&ris, &refcount) != -1) {
	932 /* references: tags */
	933 for (i = 0; i < refcount; i++) {
	934 if (git_reference_is_tag(ris[i].ref))
	935 printcommitatom(fp, ris[i].ci,
	936 git_reference_shorthand(…
	937
	938 commitinfo_free(ris[i].ci);
	939 git_reference_free(ris[i].ref);
	940 }
	941 free(ris);
	942 }
	943
	944 fputs("</feed>\n", fp);
	945
	946 return 0;
	947 }
	948
	949 size_t
	950 writeblob(git_object obj, const char fpath, const char *filename, size…
	951 {
	952 char tmp[PATH_MAX] = "", *d;
	953 const char *p;
	954 size_t lc = 0;
	955 FILE *fp;
	956
	957 if (strlcpy(tmp, fpath, sizeof(tmp)) >= sizeof(tmp))
	958 errx(1, "path truncated: '%s'", fpath);
	959 if (!(d = dirname(tmp)))
	960 err(1, "dirname");
	961 if (mkdirp(d))
	962 return -1;
	963
	964 for (p = fpath, tmp[0] = '\0'; *p; p++) {
	965 if (*p == '/' && strlcat(tmp, "../", sizeof(tmp)) >= siz…
	966 errx(1, "path truncated: '../%s'", tmp);
	967 }
	968 relpath = tmp;
	969
	970 fp = efopen(fpath, "w");
	971 writeheader(fp, filename);
	972 fputs("<p> ", fp);
	973 xmlencode(fp, filename, strlen(filename));
	974 fprintf(fp, " (%zuB)", filesize);
	975 fputs("</p><hr/>", fp);
	976
	977 if (git_blob_is_binary((git_blob *)obj))
	978 fputs("<p>Binary file.</p>\n", fp);
	979 else
	980 lc = writeblobhtml(fp, (git_blob *)obj);
	981
	982 writefooter(fp);
	983 checkfileerror(fp, fpath, 'w');
	984 fclose(fp);
	985
	986 relpath = "";
	987
	988 return lc;
	989 }
	990
	991 const char *
	992 filemode(git_filemode_t m)
	993 {
	994 static char mode[11];
	995
	996 memset(mode, '-', sizeof(mode) - 1);
	997 mode[10] = '\0';
	998
	999 if (S_ISREG(m))
	1000 mode[0] = '-';
	1001 else if (S_ISBLK(m))
	1002 mode[0] = 'b';
	1003 else if (S_ISCHR(m))
	1004 mode[0] = 'c';
	1005 else if (S_ISDIR(m))
	1006 mode[0] = 'd';
	1007 else if (S_ISFIFO(m))
	1008 mode[0] = 'p';
	1009 else if (S_ISLNK(m))
	1010 mode[0] = 'l';
	1011 else if (S_ISSOCK(m))
	1012 mode[0] = 's';
	1013 else
	1014 mode[0] = '?';
	1015
	1016 if (m & S_IRUSR) mode[1] = 'r';
	1017 if (m & S_IWUSR) mode[2] = 'w';
	1018 if (m & S_IXUSR) mode[3] = 'x';
	1019 if (m & S_IRGRP) mode[4] = 'r';
	1020 if (m & S_IWGRP) mode[5] = 'w';
	1021 if (m & S_IXGRP) mode[6] = 'x';
	1022 if (m & S_IROTH) mode[7] = 'r';
	1023 if (m & S_IWOTH) mode[8] = 'w';
	1024 if (m & S_IXOTH) mode[9] = 'x';
	1025
	1026 if (m & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
	1027 if (m & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
	1028 if (m & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T';
	1029
	1030 return mode;
	1031 }
	1032
	1033 int
	1034 writefilestree(FILE fp, git_tree tree, const char *path)
	1035 {
	1036 const git_tree_entry *entry = NULL;
	1037 git_object *obj = NULL;
	1038 const char *entryname;
	1039 char filepath[PATH_MAX], entrypath[PATH_MAX], oid[8];
	1040 size_t count, i, lc, filesize;
	1041 int r, ret;
	1042
	1043 count = git_tree_entrycount(tree);
	1044 for (i = 0; i < count; i++) {
	1045 if (!(entry = git_tree_entry_byindex(tree, i)) \|\|
	1046 !(entryname = git_tree_entry_name(entry)))
	1047 return -1;
	1048 joinpath(entrypath, sizeof(entrypath), path, entryname);
	1049
	1050 r = snprintf(filepath, sizeof(filepath), "file/%s.html",
	1051 entrypath);
	1052 if (r < 0 \|\| (size_t)r >= sizeof(filepath))
	1053 errx(1, "path truncated: 'file/%s.html'", entryp…
	1054
	1055 if (!git_tree_entry_to_object(&obj, repo, entry)) {
	1056 switch (git_object_type(obj)) {
	1057 case GIT_OBJ_BLOB:
	1058 break;
	1059 case GIT_OBJ_TREE:
	1060 /* NOTE: recurses */
	1061 ret = writefilestree(fp, (git_tree *)obj,
	1062 entrypath);
	1063 git_object_free(obj);
	1064 if (ret)
	1065 return ret;
	1066 continue;
	1067 default:
	1068 git_object_free(obj);
	1069 continue;
	1070 }
	1071
	1072 filesize = git_blob_rawsize((git_blob *)obj);
	1073 lc = writeblob(obj, filepath, entryname, filesiz…
	1074
	1075 fputs("<tr><td>", fp);
	1076 fputs(filemode(git_tree_entry_filemode(entry)), …
	1077 fprintf(fp, "</td><td><a href=\"%s", relpath);
	1078 percentencode(fp, filepath, strlen(filepath));
	1079 fputs("\">", fp);
	1080 xmlencode(fp, entrypath, strlen(entrypath));
	1081 fputs("</a></td><td class=\"num\" align=\"right\…
	1082 if (lc > 0)
	1083 fprintf(fp, "%zuL", lc);
	1084 else
	1085 fprintf(fp, "%zuB", filesize);
	1086 fputs("</td></tr>\n", fp);
	1087 git_object_free(obj);
	1088 } else if (git_tree_entry_type(entry) == GIT_OBJ_COMMIT)…
	1089 /* commit object in tree is a submodule */
	1090 fprintf(fp, "<tr><td>m---------</td><td><a href=…
	1091 relpath);
	1092 xmlencode(fp, entrypath, strlen(entrypath));
	1093 fputs("</a> @ ", fp);
	1094 git_oid_tostr(oid, sizeof(oid), git_tree_entry_i…
	1095 xmlencode(fp, oid, strlen(oid));
	1096 fputs("</td><td class=\"num\" align=\"right\"></…
	1097 }
	1098 }
	1099
	1100 return 0;
	1101 }
	1102
	1103 int
	1104 writefiles(FILE fp, const git_oid id)
	1105 {
	1106 git_tree *tree = NULL;
	1107 git_commit *commit = NULL;
	1108 int ret = -1;
	1109
	1110 fputs("<table id=\"files\"><thead>\n<tr>"
	1111 "<td><b>Mode</b></td><td><b>Name</b></td>"
	1112 "<td class=\"num\" align=\"right\"><b>Size</b></td>"
	1113 "</tr>\n</thead><tbody>\n", fp);
	1114
	1115 if (!git_commit_lookup(&commit, repo, id) &&
	1116 !git_commit_tree(&tree, commit))
	1117 ret = writefilestree(fp, tree, "");
	1118
	1119 fputs("</tbody></table>", fp);
	1120
	1121 git_commit_free(commit);
	1122 git_tree_free(tree);
	1123
	1124 return ret;
	1125 }
	1126
	1127 int
	1128 writerefs(FILE *fp)
	1129 {
	1130 struct referenceinfo *ris = NULL;
	1131 struct commitinfo *ci;
	1132 size_t count, i, j, refcount;
	1133 const char *titles[] = { "Branches", "Tags" };
	1134 const char *ids[] = { "branches", "tags" };
	1135 const char *s;
	1136
	1137 if (getrefs(&ris, &refcount) == -1)
	1138 return -1;
	1139
	1140 for (i = 0, j = 0, count = 0; i < refcount; i++) {
	1141 if (j == 0 && git_reference_is_tag(ris[i].ref)) {
	1142 if (count)
	1143 fputs("</tbody></table><br/>\n", fp);
	1144 count = 0;
	1145 j = 1;
	1146 }
	1147
	1148 /* print header if it has an entry (first). */
	1149 if (++count == 1) {
	1150 fprintf(fp, "<h2>%s</h2><table id=\"%s\">"
	1151 "<thead>\n<tr><td><b>Name</b></td>"
	1152 "<td><b>Last commit date</b></td>"
	1153 "<td><b>Author</b></td>\n</tr>\n"
	1154 "</thead><tbody>\n",
	1155 titles[j], ids[j]);
	1156 }
	1157
	1158 ci = ris[i].ci;
	1159 s = git_reference_shorthand(ris[i].ref);
	1160
	1161 fputs("<tr><td>", fp);
	1162 xmlencode(fp, s, strlen(s));
	1163 fputs("</td><td>", fp);
	1164 if (ci->author)
	1165 printtimeshort(fp, &(ci->author->when));
	1166 fputs("</td><td>", fp);
	1167 if (ci->author)
	1168 xmlencode(fp, ci->author->name, strlen(ci->autho…
	1169 fputs("</td></tr>\n", fp);
	1170 }
	1171 /* table footer */
	1172 if (count)
	1173 fputs("</tbody></table><br/>\n", fp);
	1174
	1175 for (i = 0; i < refcount; i++) {
	1176 commitinfo_free(ris[i].ci);
	1177 git_reference_free(ris[i].ref);
	1178 }
	1179 free(ris);
	1180
	1181 return 0;
	1182 }
	1183
	1184 void
	1185 usage(char *argv0)
	1186 {
	1187 fprintf(stderr, "usage: %s [-c cachefile \| -l commits] "
	1188 "[-u baseurl] repodir\n", argv0);
	1189 exit(1);
	1190 }
	1191
	1192 int
	1193 main(int argc, char *argv[])
	1194 {
	1195 git_object *obj = NULL;
	1196 const git_oid *head = NULL;
	1197 mode_t mask;
	1198 FILE fp, fpread;
	1199 char path[PATH_MAX], repodirabs[PATH_MAX + 1], *p;
	1200 char tmppath[64] = "cache.XXXXXXXXXXXX", buf[BUFSIZ];
	1201 size_t n;
	1202 int i, fd;
	1203
	1204 for (i = 1; i < argc; i++) {
	1205 if (argv[i][0] != '-') {
	1206 if (repodir)
	1207 usage(argv[0]);
	1208 repodir = argv[i];
	1209 } else if (argv[i][1] == 'c') {
	1210 if (nlogcommits > 0 \|\| i + 1 >= argc)
	1211 usage(argv[0]);
	1212 cachefile = argv[++i];
	1213 } else if (argv[i][1] == 'l') {
	1214 if (cachefile \|\| i + 1 >= argc)
	1215 usage(argv[0]);
	1216 errno = 0;
	1217 nlogcommits = strtoll(argv[++i], &p, 10);
	1218 if (argv[i][0] == '\0' \|\| *p != '\0' \|\|
	1219 nlogcommits <= 0 \|\| errno)
	1220 usage(argv[0]);
	1221 } else if (argv[i][1] == 'u') {
	1222 if (i + 1 >= argc)
	1223 usage(argv[0]);
	1224 baseurl = argv[++i];
	1225 }
	1226 }
	1227 if (!repodir)
	1228 usage(argv[0]);
	1229
	1230 if (!realpath(repodir, repodirabs))
	1231 err(1, "realpath");
	1232
	1233 /* do not search outside the git repository:
	1234 GIT_CONFIG_LEVEL_APP is the highest level currently */
	1235 git_libgit2_init();
	1236 for (i = 1; i <= GIT_CONFIG_LEVEL_APP; i++)
	1237 git_libgit2_opts(GIT_OPT_SET_SEARCH_PATH, i, "");
	1238 /* do not require the git repository to be owned by the current …
	1239 git_libgit2_opts(GIT_OPT_SET_OWNER_VALIDATION, 0);
	1240
	1241 #ifdef __OpenBSD__
	1242 if (unveil(repodir, "r") == -1)
	1243 err(1, "unveil: %s", repodir);
	1244 if (unveil(".", "rwc") == -1)
	1245 err(1, "unveil: .");
	1246 if (cachefile && unveil(cachefile, "rwc") == -1)
	1247 err(1, "unveil: %s", cachefile);
	1248
	1249 if (cachefile) {
	1250 if (pledge("stdio rpath wpath cpath fattr", NULL) == -1)
	1251 err(1, "pledge");
	1252 } else {
	1253 if (pledge("stdio rpath wpath cpath", NULL) == -1)
	1254 err(1, "pledge");
	1255 }
	1256 #endif
	1257
	1258 if (git_repository_open_ext(&repo, repodir,
	1259 GIT_REPOSITORY_OPEN_NO_SEARCH, NULL) < 0) {
	1260 fprintf(stderr, "%s: cannot open repository\n", argv[0]);
	1261 return 1;
	1262 }
	1263
	1264 /* find HEAD */
	1265 if (!git_revparse_single(&obj, repo, "HEAD"))
	1266 head = git_object_id(obj);
	1267 git_object_free(obj);
	1268
	1269 /* use directory name as name */
	1270 if ((name = strrchr(repodirabs, '/')))
	1271 name++;
	1272 else
	1273 name = "";
	1274
	1275 /* strip .git suffix */
	1276 if (!(strippedname = strdup(name)))
	1277 err(1, "strdup");
	1278 if ((p = strrchr(strippedname, '.')))
	1279 if (!strcmp(p, ".git"))
	1280 *p = '\0';
	1281
	1282 /* read description or .git/description */
	1283 joinpath(path, sizeof(path), repodir, "description");
	1284 if (!(fpread = fopen(path, "r"))) {
	1285 joinpath(path, sizeof(path), repodir, ".git/description"…
	1286 fpread = fopen(path, "r");
	1287 }
	1288 if (fpread) {
	1289 if (!fgets(description, sizeof(description), fpread))
	1290 description[0] = '\0';
	1291 checkfileerror(fpread, path, 'r');
	1292 fclose(fpread);
	1293 }
	1294
	1295 /* read url or .git/url */
	1296 joinpath(path, sizeof(path), repodir, "url");
	1297 if (!(fpread = fopen(path, "r"))) {
	1298 joinpath(path, sizeof(path), repodir, ".git/url");
	1299 fpread = fopen(path, "r");
	1300 }
	1301 if (fpread) {
	1302 if (!fgets(cloneurl, sizeof(cloneurl), fpread))
	1303 cloneurl[0] = '\0';
	1304 checkfileerror(fpread, path, 'r');
	1305 fclose(fpread);
	1306 cloneurl[strcspn(cloneurl, "\n")] = '\0';
	1307 }
	1308
	1309 /* check LICENSE */
	1310 for (i = 0; i < LEN(licensefiles) && !license; i++) {
	1311 if (!git_revparse_single(&obj, repo, licensefiles[i]) &&
	1312 git_object_type(obj) == GIT_OBJ_BLOB)
	1313 license = licensefiles[i] + strlen("HEAD:");
	1314 git_object_free(obj);
	1315 }
	1316
	1317 /* check README */
	1318 for (i = 0; i < LEN(readmefiles) && !readme; i++) {
	1319 if (!git_revparse_single(&obj, repo, readmefiles[i]) &&
	1320 git_object_type(obj) == GIT_OBJ_BLOB)
	1321 readme = readmefiles[i] + strlen("HEAD:");
	1322 git_object_free(obj);
	1323 }
	1324
	1325 if (!git_revparse_single(&obj, repo, "HEAD:.gitmodules") &&
	1326 git_object_type(obj) == GIT_OBJ_BLOB)
	1327 submodules = ".gitmodules";
	1328 git_object_free(obj);
	1329
	1330 /* log for HEAD */
	1331 fp = efopen("log.html", "w");
	1332 relpath = "";
	1333 mkdir("commit", S_IRWXU \| S_IRWXG \| S_IRWXO);
	1334 writeheader(fp, "Log");
	1335 fputs("<table id=\"log\"><thead>\n<tr><td><b>Date</b></td>"
	1336 "<td><b>Commit message</b></td>"
	1337 "<td><b>Author</b></td><td class=\"num\" align=\"right\"><…
	1338 "<td class=\"num\" align=\"right\"><b>+</b></td>"
	1339 "<td class=\"num\" align=\"right\"><b>-</b></td></tr>\n</t…
	1340
	1341 if (cachefile && head) {
	1342 /* read from cache file (does not need to exist) */
	1343 if ((rcachefp = fopen(cachefile, "r"))) {
	1344 if (!fgets(lastoidstr, sizeof(lastoidstr), rcach…
	1345 errx(1, "%s: no object id", cachefile);
	1346 if (git_oid_fromstr(&lastoid, lastoidstr))
	1347 errx(1, "%s: invalid object id", cachefi…
	1348 }
	1349
	1350 /* write log to (temporary) cache */
	1351 if ((fd = mkstemp(tmppath)) == -1)
	1352 err(1, "mkstemp");
	1353 if (!(wcachefp = fdopen(fd, "w")))
	1354 err(1, "fdopen: '%s'", tmppath);
	1355 /* write last commit id (HEAD) */
	1356 git_oid_tostr(buf, sizeof(buf), head);
	1357 fprintf(wcachefp, "%s\n", buf);
	1358
	1359 writelog(fp, head);
	1360
	1361 if (rcachefp) {
	1362 /* append previous log to log.html and the new c…
	1363 while (!feof(rcachefp)) {
	1364 n = fread(buf, 1, sizeof(buf), rcachefp);
	1365 if (ferror(rcachefp))
	1366 break;
	1367 if (fwrite(buf, 1, n, fp) != n \|\|
	1368 fwrite(buf, 1, n, wcachefp) != n)
	1369 break;
	1370 }
	1371 checkfileerror(rcachefp, cachefile, 'r');
	1372 fclose(rcachefp);
	1373 }
	1374 checkfileerror(wcachefp, tmppath, 'w');
	1375 fclose(wcachefp);
	1376 } else {
	1377 if (head)
	1378 writelog(fp, head);
	1379 }
	1380
	1381 fputs("</tbody></table>", fp);
	1382 writefooter(fp);
	1383 checkfileerror(fp, "log.html", 'w');
	1384 fclose(fp);
	1385
	1386 /* files for HEAD */
	1387 fp = efopen("files.html", "w");
	1388 writeheader(fp, "Files");
	1389 if (head)
	1390 writefiles(fp, head);
	1391 writefooter(fp);
	1392 checkfileerror(fp, "files.html", 'w');
	1393 fclose(fp);
	1394
	1395 /* summary page with branches and tags */
	1396 fp = efopen("refs.html", "w");
	1397 writeheader(fp, "Refs");
	1398 writerefs(fp);
	1399 writefooter(fp);
	1400 checkfileerror(fp, "refs.html", 'w');
	1401 fclose(fp);
	1402
	1403 /* Atom feed */
	1404 fp = efopen("atom.xml", "w");
	1405 writeatom(fp, 1);
	1406 checkfileerror(fp, "atom.xml", 'w');
	1407 fclose(fp);
	1408
	1409 /* Atom feed for tags / releases */
	1410 fp = efopen("tags.xml", "w");
	1411 writeatom(fp, 0);
	1412 checkfileerror(fp, "tags.xml", 'w');
	1413 fclose(fp);
	1414
	1415 /* rename new cache file on success */
	1416 if (cachefile && head) {
	1417 if (rename(tmppath, cachefile))
	1418 err(1, "rename: '%s' to '%s'", tmppath, cachefil…
	1419 umask((mask = umask(0)));
	1420 if (chmod(cachefile,
	1421 (S_IRUSR\|S_IWUSR\|S_IRGRP\|S_IWGRP\|S_IROTH\|S_IWOTH) & …
	1422 err(1, "chmod: '%s'", cachefile);
	1423 }
	1424
	1425 /* cleanup */
	1426 git_repository_free(repo);
	1427 git_libgit2_shutdown();
	1428
	1429 return 0;
	1430 }