gitweb.ps.run Git - ps-cgit/blob - parsing.c

   1 /* parsing.c: parsing of config files
   2  *
   3  * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include "cgit.h"
  10
  11 /*
  12  * url syntax: [repo ['/' cmd [ '/' path]]]
  13  *   repo: any valid repo url, may contain '/'
  14  *   cmd:  log | commit | diff | tree | view | blob | snapshot
  15  *   path: any valid path, may contain '/'
  16  *
  17  */
  18 void cgit_parse_url(const char *url)
  19 {
  20         char *c, *cmd, *p;
  21         struct cgit_repo *repo;
  22
  23         ctx.repo = NULL;
  24         if (!url || url[0] == '\0')
  25                 return;
  26
  27         ctx.repo = cgit_get_repoinfo(url);
  28         if (ctx.repo) {
  29                 ctx.qry.repo = ctx.repo->url;
  30                 return;
  31         }
  32
  33         cmd = NULL;
  34         c = strchr(url, '/');
  35         while (c) {
  36                 c[0] = '\0';
  37                 repo = cgit_get_repoinfo(url);
  38                 if (repo) {
  39                         ctx.repo = repo;
  40                         cmd = c;
  41                 }
  42                 c[0] = '/';
  43                 c = strchr(c + 1, '/');
  44         }
  45
  46         if (ctx.repo) {
  47                 ctx.qry.repo = ctx.repo->url;
  48                 p = strchr(cmd + 1, '/');
  49                 if (p) {
  50                         p[0] = '\0';
  51                         if (p[1])
  52                                 ctx.qry.path = trim_end(p + 1, '/');
  53                 }
  54                 if (cmd[1])
  55                         ctx.qry.page = xstrdup(cmd + 1);
  56                 return;
  57         }
  58 }
  59
  60 static char *substr(const char *head, const char *tail)
  61 {
  62         char *buf;
  63
  64         if (tail < head)
  65                 return xstrdup("");
  66         buf = xmalloc(tail - head + 1);
  67         strncpy(buf, head, tail - head);
  68         buf[tail - head] = '\0';
  69         return buf;
  70 }
  71
  72 static const char *parse_user(const char *t, char **name, char **email, unsigned long *date)
  73 {
  74         const char *line_end = strchrnul(t, '\n');
  75         struct ident_split ident;
  76         unsigned email_len;
  77
  78         if (!split_ident_line(&ident, t, line_end - t)) {
  79                 *name = substr(ident.name_begin, ident.name_end);
  80
  81                 email_len = ident.mail_end - ident.mail_begin;
  82                 *email = xmalloc(strlen("<") + email_len + strlen(">") + 1);
  83                 sprintf(*email, "<%.*s>", email_len, ident.mail_begin);
  84
  85                 if (ident.date_begin)
  86                         *date = strtoul(ident.date_begin, NULL, 10);
  87         }
  88
  89         if (*line_end)
  90                 return line_end + 1;
  91         else
  92                 return line_end;
  93 }
  94
  95 #ifdef NO_ICONV
  96 #define reencode(a, b, c)
  97 #else
  98 static const char *reencode(char **txt, const char *src_enc, const char *dst_enc)
  99 {
 100         char *tmp;
 101
 102         if (!txt)
 103                 return NULL;
 104
 105         if (!*txt || !src_enc || !dst_enc)
 106                 return *txt;
 107
 108         /* no encoding needed if src_enc equals dst_enc */
 109         if (!strcasecmp(src_enc, dst_enc))
 110                 return *txt;
 111
 112         tmp = reencode_string(*txt, dst_enc, src_enc);
 113         if (tmp) {
 114                 free(*txt);
 115                 *txt = tmp;
 116         }
 117         return *txt;
 118 }
 119 #endif
 120
 121 struct commitinfo *cgit_parse_commit(struct commit *commit)
 122 {
 123         struct commitinfo *ret;
 124         const char *p = get_cached_commit_buffer(commit, NULL);
 125         const char *t;
 126
 127         ret = xmalloc(sizeof(*ret));
 128         ret->commit = commit;
 129         ret->author = NULL;
 130         ret->author_email = NULL;
 131         ret->committer = NULL;
 132         ret->committer_email = NULL;
 133         ret->subject = NULL;
 134         ret->msg = NULL;
 135         ret->msg_encoding = NULL;
 136
 137         if (p == NULL)
 138                 return ret;
 139
 140         if (!starts_with(p, "tree "))
 141                 die("Bad commit: %s", sha1_to_hex(commit->object.sha1));
 142         else
 143                 p += 46; // "tree " + hex[40] + "\n"
 144
 145         while (starts_with(p, "parent "))
 146                 p += 48; // "parent " + hex[40] + "\n"
 147
 148         if (p && starts_with(p, "author ")) {
 149                 p = parse_user(p + 7, &ret->author, &ret->author_email,
 150                         &ret->author_date);
 151         }
 152
 153         if (p && starts_with(p, "committer ")) {
 154                 p = parse_user(p + 10, &ret->committer, &ret->committer_email,
 155                         &ret->committer_date);
 156         }
 157
 158         if (p && starts_with(p, "encoding ")) {
 159                 p += 9;
 160                 t = strchr(p, '\n');
 161                 if (t) {
 162                         ret->msg_encoding = substr(p, t + 1);
 163                         p = t + 1;
 164                 }
 165         }
 166
 167         /* if no special encoding is found, assume UTF-8 */
 168         if (!ret->msg_encoding)
 169                 ret->msg_encoding = xstrdup("UTF-8");
 170
 171         // skip unknown header fields
 172         while (p && *p && (*p != '\n')) {
 173                 p = strchr(p, '\n');
 174                 if (p)
 175                         p++;
 176         }
 177
 178         // skip empty lines between headers and message
 179         while (p && *p == '\n')
 180                 p++;
 181
 182         if (!p)
 183                 return ret;
 184
 185         t = strchr(p, '\n');
 186         if (t) {
 187                 ret->subject = substr(p, t);
 188                 p = t + 1;
 189
 190                 while (p && *p == '\n') {
 191                         p = strchr(p, '\n');
 192                         if (p)
 193                                 p++;
 194                 }
 195                 if (p)
 196                         ret->msg = xstrdup(p);
 197         } else
 198                 ret->subject = xstrdup(p);
 199
 200         reencode(&ret->author, ret->msg_encoding, PAGE_ENCODING);
 201         reencode(&ret->author_email, ret->msg_encoding, PAGE_ENCODING);
 202         reencode(&ret->committer, ret->msg_encoding, PAGE_ENCODING);
 203         reencode(&ret->committer_email, ret->msg_encoding, PAGE_ENCODING);
 204         reencode(&ret->subject, ret->msg_encoding, PAGE_ENCODING);
 205         reencode(&ret->msg, ret->msg_encoding, PAGE_ENCODING);
 206
 207         return ret;
 208 }
 209
 210
 211 struct taginfo *cgit_parse_tag(struct tag *tag)
 212 {
 213         void *data;
 214         enum object_type type;
 215         unsigned long size;
 216         const char *p;
 217         struct taginfo *ret;
 218
 219         data = read_sha1_file(tag->object.sha1, &type, &size);
 220         if (!data || type != OBJ_TAG) {
 221                 free(data);
 222                 return 0;
 223         }
 224
 225         ret = xmalloc(sizeof(*ret));
 226         ret->tagger = NULL;
 227         ret->tagger_email = NULL;
 228         ret->tagger_date = 0;
 229         ret->msg = NULL;
 230
 231         p = data;
 232
 233         while (p && *p) {
 234                 if (*p == '\n')
 235                         break;
 236
 237                 if (starts_with(p, "tagger ")) {
 238                         p = parse_user(p + 7, &ret->tagger, &ret->tagger_email,
 239                                 &ret->tagger_date);
 240                 } else {
 241                         p = strchr(p, '\n');
 242                         if (p)
 243                                 p++;
 244                 }
 245         }
 246
 247         // skip empty lines between headers and message
 248         while (p && *p == '\n')
 249                 p++;
 250
 251         if (p && *p)
 252                 ret->msg = xstrdup(p);
 253         free(data);
 254         return ret;
 255 }