stagit-responsive

My mobile friendly fork of stagit
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stagit.c (34613B)


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