include/vlc_charset.h

   1 /*****************************************************************************
   2  * charset.h: Unicode UTF-8 wrappers function
   3  *****************************************************************************
   4  * Copyright (C) 2003-2005 the VideoLAN team
   5  * Copyright © 2005-2010 Rémi Denis-Courmont
   6  * $Id$
   7  *
   8  * Author: Rémi Denis-Courmont <rem # videolan,org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 #ifndef VLC_CHARSET_H
  26 #define VLC_CHARSET_H 1
  27
  28 /**
  29  * \file
  30  * This files handles locale conversions in vlc
  31  */
  32
  33 #include <stdarg.h>
  34
  35 VLC_EXPORT( void, LocaleFree, ( const char * ) );
  36 VLC_EXPORT( char *, FromLocale, ( const char * ) LIBVLC_USED );
  37 VLC_EXPORT( char *, FromLocaleDup, ( const char * ) LIBVLC_USED );
  38 VLC_EXPORT( char *, ToLocale, ( const char * ) LIBVLC_USED );
  39 VLC_EXPORT( char *, ToLocaleDup, ( const char * ) LIBVLC_USED );
  40
  41 VLC_EXPORT( int, utf8_vfprintf, ( FILE *stream, const char *fmt, va_list ap ) );
  42 VLC_EXPORT( int, utf8_fprintf, ( FILE *, const char *, ... ) LIBVLC_FORMAT( 2, 3 ) );
  43
  44 VLC_EXPORT( char *, EnsureUTF8, ( char * ) );
  45 VLC_EXPORT( const char *, IsUTF8, ( const char * ) LIBVLC_USED );
  46
  47 #ifdef WIN32
  48 LIBVLC_USED
  49 static inline char *FromWide (const wchar_t *wide)
  50 {
  51     size_t len = WideCharToMultiByte (CP_UTF8, 0, wide, -1, NULL, 0, NULL, NULL);
  52     if (len == 0)
  53         return NULL;
  54
  55     char *out = (char *)malloc (len);
  56
  57     if (likely(out))
  58         WideCharToMultiByte (CP_UTF8, 0, wide, -1, out, len, NULL, NULL);
  59     return out;
  60 }
  61
  62 LIBVLC_USED
  63 static inline wchar_t *ToWide (const char *utf8)
  64 {
  65     int len = MultiByteToWideChar (CP_UTF8, 0, utf8, -1, NULL, 0);
  66     if (len == 0)
  67         return NULL;
  68
  69     wchar_t *out = (wchar_t *)malloc (len * sizeof (wchar_t));
  70
  71     if (likely(out))
  72         MultiByteToWideChar (CP_UTF8, 0, utf8, -1, out, len);
  73     return out;
  74 }
  75 #endif
  76
  77 /**
  78  * Converts a nul-terminated string from ISO-8859-1 to UTF-8.
  79  */
  80 static inline char *FromLatin1 (const char *latin)
  81 {
  82     char *str = (char *)malloc (2 * strlen (latin) + 1), *utf8 = str;
  83     unsigned char c;
  84
  85     if (str == NULL)
  86         return NULL;
  87
  88     while ((c = *(latin++)) != '\0')
  89     {
  90          if (c >= 0x80)
  91          {
  92              *(utf8++) = 0xC0 | (c >> 6);
  93              *(utf8++) = 0x80 | (c & 0x3F);
  94          }
  95          else
  96              *(utf8++) = c;
  97     }
  98     *(utf8++) = '\0';
  99
 100     utf8 = (char *)realloc (str, utf8 - str);
 101     return utf8 ? utf8 : str;
 102 }
 103
 104 VLC_EXPORT( char *, FromCharset, ( const char *charset, const void *data, size_t data_size ) LIBVLC_USED );
 105
 106 VLC_EXPORT( double, us_strtod, ( const char *, char ** ) LIBVLC_USED );
 107 VLC_EXPORT( float, us_strtof, ( const char *, char ** ) LIBVLC_USED );
 108 VLC_EXPORT( double, us_atof, ( const char * ) LIBVLC_USED );
 109 VLC_EXPORT( int, us_asprintf, ( char **, const char *, ... ) LIBVLC_USED );
 110
 111 #endif