-static inline int isurlsafe( int c )
-{
- return ( (unsigned char)( c - 'a' ) < 26 )
- || ( (unsigned char)( c - 'A' ) < 26 )
- || ( (unsigned char)( c - '0' ) < 10 )
- /* Hmm, we should not encode character that are allowed in URLs
- * (even if they are not URL-safe), nor URL-safe characters.
- * We still encode some of them because of Microsoft's crap browser.
- */
- || ( strchr( "-_.", c ) != NULL );
-}
-
-static inline char url_hexchar( int c )
-{
- return ( c < 10 ) ? c + '0' : c + 'A' - 10;
-}
-
-/*****************************************************************************
- * vlc_UrlEncode:
- *****************************************************************************
- * perform URL encoding
- * (you do NOT want to do URL decoding - it is not reversible - do NOT do it)
- *****************************************************************************/
-static inline char *vlc_UrlEncode( const char *psz_url )
-{
- char psz_enc[3 * strlen( psz_url ) + 1], *out = psz_enc;
- const unsigned char *in;
-
- for( in = (const unsigned char *)psz_url; *in; in++ )
- {
- unsigned char c = *in;
-
- if( isurlsafe( c ) )
- *out++ = (char)c;
- else
- {
- uint16_t cp;
-
- *out++ = '%';
- /* UTF-8 to UCS-2 conversion */
- if( ( c & 0x7f ) == 0 )
- cp = c;
- else
- if( ( c & 0xe0 ) == 0xc0 )
- {
- cp = ((c & 0x1f) << 6) | (in[1] & 0x3f);
- in++;
- }
- else
- if( ( c & 0xf0 ) == 0xe0 )
- {
- cp = ((c & 0xf) << 12) | ((in[1] & 0x3f) << 6) | (in[2] & 0x3f);
- in += 2;
- }
- else
- /* cannot URL-encode code points outside the BMP */
- return NULL;
-
- if( cp < 0xff )
- {
- /* Encode ISO-8859-1 characters */
- *out++ = url_hexchar( cp >> 4 );
- *out++ = url_hexchar( cp & 0xf );
- }
- else
- {
- /* Encode non-Latin-1 characters */
- *out++ = 'u';
- *out++ = url_hexchar( cp >> 12 );
- *out++ = url_hexchar((cp >> 8) & 0xf );
- *out++ = url_hexchar((cp >> 4) & 0xf );
- *out++ = url_hexchar( cp & 0xf );
- }
- }
- }
- *out++ = '\0';
-
- return strdup( psz_enc );
-}
-
-/*****************************************************************************
- * vlc_UrlIsNotEncoded:
- *****************************************************************************
- * check if given string is not a valid URL and must hence be encoded
- *****************************************************************************/