src/os2/dirs.c

   1 /*****************************************************************************
   2  * dirs.c: OS/2 directories configuration
   3  *****************************************************************************
   4  * Copyright (C) 2010 VLC authors and VideoLAN
   5  *
   6  * Authors: KO Myung-Hun <komh@chollian.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU Lesser General Public License as published by
  10  * the Free Software Foundation; either version 2.1 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public License
  19  * along with this program; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 #ifdef HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26
  27 #include <vlc_common.h>
  28
  29 #include "../libvlc.h"
  30 #include <vlc_charset.h>
  31 #include "config/configuration.h"
  32
  33 #include <assert.h>
  34
  35 static const char *config_GetRelDir( const char *dir )
  36 {
  37     static int prefixlen = -1;
  38
  39     if( prefixlen == -1 )
  40     {
  41         prefixlen = 0;
  42         while( LIBDIR[ prefixlen ] && SYSDATADIR[ prefixlen ]
  43                && LIBDIR[ prefixlen ] == SYSDATADIR[ prefixlen])
  44             prefixlen++;
  45     }
  46
  47     return dir + prefixlen;
  48 }
  49
  50 static const char *config_GetBaseDir( void )
  51 {
  52     static CHAR basedir[ CCHMAXPATH + 4 ] = "";
  53
  54     if( basedir[ 0 ] == '\0')
  55     {
  56         HMODULE hmod;
  57
  58         DosQueryModFromEIP( &hmod, NULL, 0, NULL, NULL, ( ULONG )system_Init );
  59         DosQueryModuleName( hmod, sizeof( basedir ), basedir );
  60
  61         /* remove \ + the DLL name */
  62         char *slash = strrchr( basedir, '\\');
  63         *slash = '\0';
  64
  65         /* remove lib dir name */
  66         slash = strrchr( basedir, '\\');
  67         if( slash == NULL )
  68             abort();
  69         slash[ 1 ] = '\0';
  70     }
  71
  72     return basedir;
  73 }
  74
  75 static char *config_GetRealDir( const char *dir )
  76 {
  77     char realdir[ CCHMAXPATH + 4 ];
  78
  79     snprintf( realdir, sizeof( realdir ), "%s%s",
  80               config_GetBaseDir(), config_GetRelDir( dir ));
  81
  82     return FromLocaleDup( realdir );
  83 }
  84
  85 char *config_GetLibDir( void )
  86 {
  87     const char *path = getenv ("VLC_LIB_PATH");
  88     if (path)
  89         return FromLocaleDup( path );
  90
  91     return config_GetRealDir( PKGLIBDIR );
  92 }
  93
  94 static char *config_GetLibExecDir(void)
  95 {
  96     const char *path = getenv ("VLC_LIB_PATH");
  97     if (path)
  98         return FromLocaleDup( path );
  99
 100     return config_GetRealDir( PKGLIBEXECDIR );
 101 }
 102
 103 /**
 104  * Determines the shared data directory
 105  *
 106  * @return a nul-terminated string or NULL. Use free() to release it.
 107  */
 108 static char *config_GetDataDir(void)
 109 {
 110     const char *path = getenv ("VLC_DATA_PATH");
 111     if (path)
 112         return FromLocaleDup( path );
 113
 114     return config_GetRealDir( PKGDATADIR );
 115 }
 116
 117 char *config_GetSysPath(vlc_sysdir_t type, const char *filename)
 118 {
 119     char *dir = NULL;
 120
 121     switch (type)
 122     {
 123         case VLC_PKG_DATA_DIR:
 124             dir = config_GetDataDir();
 125             break;
 126         case VLC_PKG_LIB_DIR:
 127             dir = config_GetLibDir();
 128             break;
 129         case VLC_PKG_LIBEXEC_DIR:
 130             dir = config_GetLibExecDir();
 131             break;
 132         case VLC_SYSDATA_DIR:
 133             dir = config_GetRealDir( SYSDATADIR );
 134             break;
 135         case VLC_LOCALE_DIR:
 136             dir = config_GetRealDir( LOCALEDIR );
 137             break;
 138         default:
 139             vlc_assert_unreachable();
 140     }
 141
 142     if (filename == NULL || unlikely(dir == NULL))
 143         return dir;
 144
 145     char *path;
 146     asprintf(&path, "%s/%s", dir, filename);
 147     free(dir);
 148     return path;
 149 }
 150
 151 static char *config_GetHomeDir (void)
 152 {
 153     const char *home = getenv ("HOME");
 154     if (home != NULL)
 155         return FromLocaleDup (home);
 156
 157     return config_GetLibDir();
 158 }
 159
 160 char *config_GetUserDir (vlc_userdir_t type)
 161 {
 162     switch (type)
 163     {
 164         case VLC_HOME_DIR:
 165         case VLC_CONFIG_DIR:
 166         case VLC_USERDATA_DIR:
 167         case VLC_CACHE_DIR:
 168         case VLC_DESKTOP_DIR:
 169         case VLC_DOWNLOAD_DIR:
 170         case VLC_TEMPLATES_DIR:
 171         case VLC_PUBLICSHARE_DIR:
 172         case VLC_DOCUMENTS_DIR:
 173         case VLC_MUSIC_DIR:
 174         case VLC_PICTURES_DIR:
 175         case VLC_VIDEOS_DIR:
 176             break;
 177     }
 178     return config_GetHomeDir ();
 179 }