Miscellany

/******
  UTF8
 ******/ 

#define b10000000 (guchar)(0x80)
#define b11000000 (guchar)(0xC0)
#define b11100000 (guchar)(0xE0)
#define b11110000 (guchar)(0xF0)

#define b00111111 (guchar)(0x3F)
#define b00011111 (guchar)(0x1F)
#define b00001111 (guchar)(0x0F)
#define b00000111 (guchar)(0x07)

static inline guchar *utf8_char( guint32 uCode, guchar *pcOut )
{
	g_assert( pcOut!=NULL );

	if( uCode<128 ) {
		pcOut[0] = (guchar) uCode ;
		pcOut[1] = '\0' ;
		g_assert( g_utf8_validate( pcOut, 0, NULL )==TRUE );
		return( pcOut );
	}

	if( uCode<4096 ) {
		pcOut[0] = b11000000 | ( (guchar)(uCode >> 6) & b00011111 );
		pcOut[1] = b10000000 | ( (guchar)(uCode     ) & b00111111 );
		pcOut[2] = '\0' ;
		g_assert( g_utf8_validate( pcOut, 0, NULL )==TRUE );
		return( pcOut );
	}
	
	if( uCode<65535 ) {
		pcOut[0] = b11100000 | ( (guchar)(uCode >> 12) & b00001111 );
		pcOut[1] = b10000000 | ( (guchar)(uCode >> 6 ) & b00111111 );
		pcOut[2] = b10000000 | ( (guchar)(uCode      ) & b00111111 );
		pcOut[3] = '\0' ;
		g_assert( g_utf8_validate( pcOut, 0, NULL )==TRUE );
		return( pcOut );
	}

	pcOut[0] = '\0' ;
	return(NULL);
}