src/stagit-index.c

   1 #include <err.h>
   2 #include <limits.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <time.h>
   7 #include <unistd.h>
   8
   9 #include <git2.h>
  10
  11 #include "cp.h"
  12
  13 static git_repository *repo;
  14
  15 static const char *relpath = "";
  16
  17 static char description[255] = "Repositories";
  18 static char *name = "";
  19 static char owner[255];
  20
  21 void
  22 joinpath(char *buf, size_t bufsiz, const char *path, const char *path2)
  23 {
  24         int r;
  25
  26         r = snprintf(buf, bufsiz, "%s%s%s",
  27                 path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
  28         if (r < 0 || (size_t)r >= bufsiz)
  29                 errx(1, "path truncated: '%s%s%s'",
  30                         path, path[0] && path[strlen(path) - 1] != '/' ? "/" : "", path2);
  31 }
  32
  33 /* Escape characters below as HTML 2.0 / XML 1.0. */
  34 void
  35 xmlencode(FILE *fp, const char *s, size_t len)
  36 {
  37         size_t i;
  38
  39         for (i = 0; *s && i < len; s++, i++) {
  40                 switch(*s) {
  41                 case '<':  fputs("&lt;",   fp); break;
  42                 case '>':  fputs("&gt;",   fp); break;
  43                 case '\'': fputs("&#39;" , fp); break;
  44                 case '&':  fputs("&amp;",  fp); break;
  45                 case '"':  fputs("&quot;", fp); break;
  46                 default:   fputc(*s, fp);
  47                 }
  48         }
  49 }
  50
  51 void
  52 printtimeshort(FILE *fp, const git_time *intime)
  53 {
  54         struct tm *intm;
  55         time_t t;
  56         char out[32];
  57
  58         t = (time_t)intime->time;
  59         if (!(intm = gmtime(&t)))
  60                 return;
  61         strftime(out, sizeof(out), "%Y-%m-%d %H:%M", intm);
  62         fputs(out, fp);
  63 }
  64
  65 void
  66 writeheader(char *path)
  67 {
  68         FILE *fp = fopen(path, "w");
  69         fputs("<!DOCTYPE html>\n"
  70                 "<html lang=\"en\">\n<head>\n"
  71                 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
  72                 "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n"
  73                 "<title>", fp);
  74         xmlencode(fp, description, strlen(description));
  75         fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
  76         fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
  77         fputs("</head>\n<body>\n", fp);
  78         fprintf(fp, "<table>\n<tr><td><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /></td>\n"
  79                 "<td><h1>", relpath);
  80         xmlencode(fp, description, strlen(description));
  81         fputs("</h1></td></tr><tr><td></td><td>\n"
  82                 "</td></tr>\n</table>\n<hr/>\n<div id=\"content\">\n"
  83                 "<table id=\"index\"><thead>\n"
  84                 "<tr><td><b>Name</b></td><td><b>Description</b></td><td><b>Owner</b></td>"
  85                 "<td><b>Last commit</b></td></tr>"
  86                 "</thead><tbody>\n", fp);
  87         fclose(fp);
  88 }
  89
  90 void
  91 writefooter(char *path)
  92 {
  93         FILE *fp = fopen(path, "a");
  94         fputs("</tbody>\n</table>\n</div>\n</body>\n</html>\n", fp);
  95         fclose(fp);
  96 }
  97
  98 int
  99 writelog(char *path)
 100 {
 101         FILE *fp = fopen(path, "a");
 102         git_commit *commit = NULL;
 103         const git_signature *author;
 104         git_revwalk *w = NULL;
 105         git_oid id;
 106         char *stripped_name = NULL, *p;
 107         int ret = 0;
 108
 109         git_revwalk_new(&w, repo);
 110         git_revwalk_push_head(w);
 111         git_revwalk_simplify_first_parent(w);
 112
 113         if (git_revwalk_next(&id, w) ||
 114             git_commit_lookup(&commit, repo, &id)) {
 115                 ret = -1;
 116                 goto err;
 117         }
 118
 119         author = git_commit_author(commit);
 120
 121         /* strip .git suffix */
 122         if (!(stripped_name = strdup(name)))
 123                 err(1, "strdup");
 124         if ((p = strrchr(stripped_name, '.')))
 125                 if (!strcmp(p, ".git"))
 126                         *p = '\0';
 127
 128         fputs("<tr><td><a href=\"", fp);
 129         xmlencode(fp, stripped_name, strlen(stripped_name));
 130         fputs("/log.html\">", fp);
 131         xmlencode(fp, stripped_name, strlen(stripped_name));
 132         fputs("</a></td><td>", fp);
 133         xmlencode(fp, description, strlen(description));
 134         fputs("</td><td>", fp);
 135         xmlencode(fp, owner, strlen(owner));
 136         fputs("</td><td>", fp);
 137         if (author)
 138                 printtimeshort(fp, &(author->when));
 139         fputs("</td></tr>", fp);
 140
 141         git_commit_free(commit);
 142 err:
 143         git_revwalk_free(w);
 144         free(stripped_name);
 145         fclose(fp);
 146
 147         return ret;
 148 }
 149
 150 int
 151 main(int argc, char *argv[])
 152 {
 153         FILE *fp;
 154         char path[PATH_MAX], repodirabs[PATH_MAX + 1];
 155         const char *repodir;
 156         int i, ret = 0;
 157
 158         if (argc < 2) {
 159                 fprintf(stderr, "%s [repodir...]\n", argv[0]);
 160                 return 1;
 161         }
 162
 163         git_libgit2_init();
 164
 165 #ifdef __OpenBSD__
 166         for (i = 1; i < argc; i++)
 167                 if (unveil(argv[i], "r") == -1)
 168                         err(1, "unveil: %s", argv[i]);
 169
 170         if (pledge("stdio rpath", NULL) == -1)
 171                 err(1, "pledge");
 172 #endif
 173
 174         writeheader("index.html");
 175
 176         for (i = 1; i < argc; i++) {
 177                 repodir = argv[i];
 178                 if (!realpath(repodir, repodirabs))
 179                         err(1, "realpath");
 180
 181                 if (git_repository_open_ext(&repo, repodir,
 182                     GIT_REPOSITORY_OPEN_NO_SEARCH, NULL)) {
 183                         fprintf(stderr, "%s: cannot open repository\n", argv[0]);
 184                         ret = 1;
 185                         continue;
 186                 }
 187
 188                 /* use directory name as name */
 189                 if ((name = strrchr(repodirabs, '/')))
 190                         name++;
 191                 else
 192                         name = "";
 193
 194                 /* read description or .git/description */
 195                 joinpath(path, sizeof(path), repodir, "description");
 196                 if (!(fp = fopen(path, "r"))) {
 197                         joinpath(path, sizeof(path), repodir, ".git/description");
 198                         fp = fopen(path, "r");
 199                 }
 200                 description[0] = '\0';
 201                 if (fp) {
 202                         if (!fgets(description, sizeof(description), fp))
 203                                 description[0] = '\0';
 204                         fclose(fp);
 205                 }
 206
 207                 /* read owner or .git/owner */
 208                 joinpath(path, sizeof(path), repodir, "owner");
 209                 if (!(fp = fopen(path, "r"))) {
 210                         joinpath(path, sizeof(path), repodir, ".git/owner");
 211                         fp = fopen(path, "r");
 212                 }
 213                 owner[0] = '\0';
 214                 if (fp) {
 215                         if (!fgets(owner, sizeof(owner), fp))
 216                                 owner[0] = '\0';
 217                         owner[strcspn(owner, "\n")] = '\0';
 218                         fclose(fp);
 219                 }
 220                 writelog("index.html");
 221         }
 222         writefooter("index.html");
 223
 224         /* copy css */
 225         char cwd[PATH_MAX];
 226         strcpy(cwd, getcwd(cwd, sizeof(cwd)));
 227         cp("/usr/local/share/stagit/style.css", strcat(cwd, "/style.css"));
 228
 229         /* cleanup */
 230         git_repository_free(repo);
 231         git_libgit2_shutdown();
 232
 233         return ret;
 234 }