path.c

   1 /*
   2  * Get path to config dir/file.
   3  *
   4  * Return Values:
   5  *   Returns the pointer to the ALLOCATED buffer containing the
   6  *   zero terminated path string. This buffer has to be FREED
   7  *   by the caller.
   8  *
   9  * This file is part of MPlayer.
  10  *
  11  * MPlayer is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * MPlayer is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  23  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <stdbool.h>
  30 #include <sys/types.h>
  31 #include <sys/stat.h>
  32 #include <unistd.h>
  33 #include "config.h"
  34 #include "mp_msg.h"
  35 #include "path.h"
  36
  37 #ifdef CONFIG_MACOSX_BUNDLE
  38 #include <CoreFoundation/CoreFoundation.h>
  39 #include <unistd.h>
  40 #elif defined(__MINGW32__)
  41 #include <windows.h>
  42 #elif defined(__CYGWIN__)
  43 #include <windows.h>
  44 #include <sys/cygwin.h>
  45 #endif
  46
  47 #include "talloc.h"
  48
  49 #include "osdep/io.h"
  50
  51 char *get_path(const char *filename){
  52         char *homedir;
  53         char *buff;
  54 #ifdef __MINGW32__
  55         static char *config_dir = "/mplayer";
  56 #else
  57         static char *config_dir = "/.mplayer";
  58 #endif
  59         int len;
  60 #ifdef CONFIG_MACOSX_BUNDLE
  61         struct stat dummy;
  62         CFIndex maxlen=256;
  63         CFURLRef res_url_ref=NULL;
  64         CFURLRef bdl_url_ref=NULL;
  65         char *res_url_path = NULL;
  66         char *bdl_url_path = NULL;
  67 #endif
  68
  69         if ((homedir = getenv("MPLAYER_HOME")) != NULL)
  70                 config_dir = "";
  71         else if ((homedir = getenv("HOME")) == NULL)
  72 #if defined(__MINGW32__) || defined(__CYGWIN__)
  73         /* Hack to get fonts etc. loaded outside of Cygwin environment. */
  74         {
  75                 int i,imax=0;
  76                 char exedir[260];
  77                 GetModuleFileNameA(NULL, exedir, 260);
  78                 for (i=0; i< strlen(exedir); i++)
  79                         if (exedir[i] =='\\')
  80                                 {exedir[i]='/'; imax=i;}
  81                 exedir[imax]='\0';
  82                 homedir = exedir;
  83         }
  84 #else
  85         return NULL;
  86 #endif
  87         len = strlen(homedir) + strlen(config_dir) + 1;
  88         if (filename == NULL) {
  89                 if ((buff = malloc(len)) == NULL)
  90                         return NULL;
  91                 sprintf(buff, "%s%s", homedir, config_dir);
  92         } else {
  93                 len += strlen(filename) + 1;
  94                 if ((buff = malloc(len)) == NULL)
  95                         return NULL;
  96                 sprintf(buff, "%s%s/%s", homedir, config_dir, filename);
  97         }
  98
  99 #ifdef CONFIG_MACOSX_BUNDLE
 100         if (stat(buff, &dummy)) {
 101
 102                 res_url_ref=CFBundleCopyResourcesDirectoryURL(CFBundleGetMainBundle());
 103                 bdl_url_ref=CFBundleCopyBundleURL(CFBundleGetMainBundle());
 104
 105                 if (res_url_ref&&bdl_url_ref) {
 106
 107                         res_url_path=malloc(maxlen);
 108                         bdl_url_path=malloc(maxlen);
 109
 110                         while (!CFURLGetFileSystemRepresentation(res_url_ref, true, res_url_path, maxlen)) {
 111                                 maxlen*=2;
 112                                 res_url_path=realloc(res_url_path, maxlen);
 113                         }
 114                         CFRelease(res_url_ref);
 115
 116                         while (!CFURLGetFileSystemRepresentation(bdl_url_ref, true, bdl_url_path, maxlen)) {
 117                                 maxlen*=2;
 118                                 bdl_url_path=realloc(bdl_url_path, maxlen);
 119                         }
 120                         CFRelease(bdl_url_ref);
 121
 122                         if (strcmp(res_url_path, bdl_url_path) == 0)
 123                                 res_url_path = NULL;
 124                 }
 125
 126                 if (res_url_path&&filename) {
 127                         if ((strlen(filename)+strlen(res_url_path)+2)>maxlen) {
 128                                 maxlen=strlen(filename)+strlen(res_url_path)+2;
 129                         }
 130                         free(buff);
 131                         buff = malloc(maxlen);
 132                         strcpy(buff, res_url_path);
 133
 134                         strcat(buff,"/");
 135                         strcat(buff, filename);
 136                 }
 137         }
 138 #endif
 139         mp_msg(MSGT_GLOBAL,MSGL_V,"get_path('%s') -> '%s'\n",filename,buff);
 140         return buff;
 141 }
 142
 143 #if (defined(__MINGW32__) || defined(__CYGWIN__)) && defined(CONFIG_WIN32DLL)
 144 void set_path_env(void)
 145 {
 146         /*make our codec dirs available for LoadLibraryA()*/
 147         char win32path[MAX_PATH];
 148 #ifdef __CYGWIN__
 149         cygwin_conv_to_full_win32_path(BINARY_CODECS_PATH, win32path);
 150 #else /*__CYGWIN__*/
 151         /* Expand to absolute path unless it's already absolute */
 152         if (!strstr(BINARY_CODECS_PATH,":") && BINARY_CODECS_PATH[0] != '\\') {
 153                 GetModuleFileNameA(NULL, win32path, MAX_PATH);
 154                 strcpy(strrchr(win32path, '\\') + 1, BINARY_CODECS_PATH);
 155         }
 156         else strcpy(win32path, BINARY_CODECS_PATH);
 157 #endif /*__CYGWIN__*/
 158         mp_msg(MSGT_WIN32, MSGL_V, "Setting PATH to %s\n", win32path);
 159         if (!SetEnvironmentVariableA("PATH", win32path))
 160                 mp_msg(MSGT_WIN32, MSGL_WARN, "Cannot set PATH!");
 161 }
 162 #endif /* (defined(__MINGW32__) || defined(__CYGWIN__)) && defined(CONFIG_WIN32DLL) */
 163
 164 char *codec_path = BINARY_CODECS_PATH;
 165
 166 char *mp_basename(const char *path)
 167 {
 168     char *s;
 169
 170 #if HAVE_DOS_PATHS
 171     s = strrchr(path, '\\');
 172     if (s)
 173         path = s + 1;
 174     s = strrchr(path, ':');
 175     if (s)
 176         path = s + 1;
 177 #endif
 178     s = strrchr(path, '/');
 179     return s ? s + 1 : (char *)path;
 180 }
 181
 182 struct bstr mp_dirname(const char *path)
 183 {
 184     struct bstr ret = {(uint8_t *)path, mp_basename(path) - path};
 185     if (ret.len == 0)
 186         return bstr(".");
 187     return ret;
 188 }
 189
 190 char *mp_path_join(void *talloc_ctx, struct bstr p1, struct bstr p2)
 191 {
 192     if (p1.len == 0)
 193         return bstrdup0(talloc_ctx, p2);
 194     if (p2.len == 0)
 195         return bstrdup0(talloc_ctx, p1);
 196
 197 #if HAVE_DOS_PATHS
 198     if (p2.len >= 2 && p2.start[1] == ':'
 199         || p2.start[0] == '\\' || p2.start[0] == '/')
 200 #else
 201     if (p2.start[0] == '/')
 202 #endif
 203         return bstrdup0(talloc_ctx, p2);   // absolute path
 204
 205     bool have_separator;
 206     int endchar1 = p1.start[p1.len - 1];
 207 #if HAVE_DOS_PATHS
 208     have_separator = endchar1 == '/' || endchar1 == '\\'
 209         || p1.len == 2 && endchar1 == ':';     // "X:" only
 210 #else
 211     have_separator = endchar1 == '/';
 212 #endif
 213
 214     return talloc_asprintf(talloc_ctx, "%.*s%s%.*s", BSTR_P(p1),
 215                            have_separator ? "" : "/", BSTR_P(p2));
 216 }
 217
 218 bool mp_path_exists(const char *path)
 219 {
 220     struct stat st;
 221     return mp_stat(path, &st) == 0;
 222 }
 223
 224 bool mp_path_isdir(const char *path)
 225 {
 226     struct stat st;
 227     return mp_stat(path, &st) == 0 && S_ISDIR(st.st_mode);
 228 }