UTF32 to UTF8 conversion

because the buggy GUI toolkit that sucks big time^W^W^W^W^W^W^WwxWidgets
needs it

include/charset.h

@@ -30,6 +30,7 @@ VLC_EXPORT( void, LocaleFree, ( const char * ) );
 VLC_EXPORT( char *, FromLocale, ( const char * ) );
 VLC_EXPORT( char *, ToLocale, ( const char * ) );
 VLC_EXPORT( char *, EnsureUTF8, ( char * ) );
+VLC_EXPORT( char *, FromUTF32, ( wchar_t * ) );
 VLC_EXPORT( char *, __vlc_fix_readdir_charset, ( vlc_object_t *, const char * ) );
 #define vlc_fix_readdir_charset(a,b) __vlc_fix_readdir_charset(VLC_OBJECT(a),b)
 

include/vlc_symbols.h

@@ -385,6 +385,7 @@ void sout_MuxDeleteStream (sout_mux_t *, sout_input_t *);
 char * httpd_MsgGet (httpd_message_t *, char *psz_name);
 const iso639_lang_t * GetLang_1 (const char *);
 void aout_FormatsPrint (aout_instance_t * p_aout, const char * psz_text, const audio_sample_format_t * p_format1, const audio_sample_format_t * p_format2);
+char * FromUTF32 (wchar_t *);
 void __vout_OSDMessage (vlc_object_t *, int, char *, ...);
 void intf_StopThread (intf_thread_t *);
 stream_t * __stream_MemoryNew (vlc_object_t *p_obj, uint8_t *p_buffer, int64_t i_size, vlc_bool_t i_preserve_memory);
@@ -815,7 +816,6 @@ struct module_symbols_t
     osd_state_t * (*__osd_StateChange_inner) (osd_state_t *, const int);
     void (*osd_ConfigUnload_inner) (vlc_object_t *, osd_menu_t **);
     void (*__osd_MenuShow_inner) (vlc_object_t *);
-    void *__osd_VolumeDown_deprecated;
     void (*__osd_MenuNext_inner) (vlc_object_t *);
     void (*__osd_MenuDelete_inner) (vlc_object_t *, osd_menu_t *);
     void (*__osd_MenuHide_inner) (vlc_object_t *);
@@ -846,6 +846,7 @@ struct module_symbols_t
     void (*osd_Message_inner) (spu_t *, int, char *, ...);
     int (*osd_ShowTextAbsolute_inner) (spu_t *, int, char *, text_style_t *, int, int, int, mtime_t, mtime_t);
     char * (*config_GetUserDir_inner) (void);
+    char * (*FromUTF32_inner) (wchar_t *);
 };
 #  if defined (__PLUGIN__)
 #  define aout_FiltersCreatePipeline (p_symbols)->aout_FiltersCreatePipeline_inner
@@ -1254,6 +1255,7 @@ struct module_symbols_t
 #  define osd_Message (p_symbols)->osd_Message_inner
 #  define osd_ShowTextAbsolute (p_symbols)->osd_ShowTextAbsolute_inner
 #  define config_GetUserDir (p_symbols)->config_GetUserDir_inner
+#  define FromUTF32 (p_symbols)->FromUTF32_inner
 #  elif defined (HAVE_DYNAMIC_PLUGINS) && !defined (__BUILTIN__)
 /******************************************************************
  * STORE_SYMBOLS: store VLC APIs into p_symbols for plugin access.
@@ -1665,8 +1667,8 @@ struct module_symbols_t
     ((p_symbols)->osd_Message_inner) = osd_Message; \
     ((p_symbols)->osd_ShowTextAbsolute_inner) = osd_ShowTextAbsolute; \
     ((p_symbols)->config_GetUserDir_inner) = config_GetUserDir; \
+    ((p_symbols)->FromUTF32_inner) = FromUTF32; \
     (p_symbols)->net_ConvertIPv4_deprecated = NULL; \
-    (p_symbols)->__osd_VolumeDown_deprecated = NULL; \
 
 #  endif /* __PLUGIN__ */
 # endif /* HAVE_SHARED_LIBVLC */

src/misc/charset.c

@@ -2,10 +2,11 @@
  * charset.c: Determine a canonical name for the current locale's character
  *            encoding.
  *****************************************************************************
- * Copyright (C) 2003-2004 the VideoLAN team
+ * Copyright (C) 2003-2005 the VideoLAN team
  * $Id$
  *
- * Author: Derk-Jan Hartman <thedj at users.sf.net>
+ * Authors: Derk-Jan Hartman <thedj at users.sf.net>
+ *          Rémi Denis-Courmont <rem at videolan.org>
  *
  * vlc_current_charset() an adaption of mp_locale_charset():
  *
@@ -374,3 +375,69 @@ char *__vlc_fix_readdir_charset( vlc_object_t *p_this, const char *psz_string )
 
     return strdup( psz_string );
 }
+
+/**********************************************************************
+ * UTF32toUTF8: converts UTF-32 to UTF-8
+ *********************************************************************/
+char *UTF32toUTF8( wchar_t *src, size_t len, size_t *newlen )
+{
+    char *res, *out;
+
+    /* allocate memory */
+    out = res = (char *)malloc( 6 * len );
+    if( res == NULL )
+        return NULL;
+
+    while( len >= sizeof( wchar_t ) )
+    {
+        uint32_t uv = *src++;
+        len--;
+
+        if( uv < 0x80 )
+        {
+            *out++ = uv;
+            continue;
+        }
+        else
+        if( uv < 0x800 )
+        {
+            *out++ = (( uv >>  6)         | 0xc0);
+            *out++ = (( uv        & 0x3f) | 0x80);
+            continue;
+        }
+        else
+        if( uv < 0x10000 )
+        {
+            *out++ = (( uv >> 12)         | 0xe0);
+            *out++ = (((uv >>  6) & 0x3f) | 0x80);
+            *out++ = (( uv        & 0x3f) | 0x80);
+            continue;
+        }
+        else
+        {
+            *out++ = (( uv >> 18)         | 0xf0);
+            *out++ = (((uv >> 12) & 0x3f) | 0x80);
+            *out++ = (((uv >>  6) & 0x3f) | 0x80);
+            *out++ = (( uv        & 0x3f) | 0x80);
+            continue;
+        }
+    }
+    len = out - res;
+    res = realloc( res, len );
+    if( newlen != NULL )
+        *newlen = len;
+    return res;
+}
+
+
+char *FromUTF32( wchar_t *src )
+{
+    size_t len;
+    wchar_t *in;
+
+    /* determine the size of the string */
+    for( len = 1, in = src; GetWBE( in ); len++ )
+        in++;
+
+    return UTF32toUTF8( src, len, NULL );
+}