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Convert SDL text input to UTF-32

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Tim Angus 2013-01-19 21:35:09 +00:00
parent 3105d62027
commit aaea838d39
1 changed files with 34 additions and 8 deletions
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38
code/sdl/sdl_input.c
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@ -729,15 +729,41 @@ static void IN_ProcessEvents( void )
case SDL_TEXTINPUT:
{
int i;
int numChars = strlen( e.text.text );
char *c = e.text.text;
for( i = 0; i < numChars; i++ )
// Quick and dirty UTF-8 to UTF-32 conversion
while( *c )
{
char c = e.text.text[ i ];
int utf32 = 0;
if( !IN_IsConsoleKey( 0, c ) )
Com_QueueEvent( 0, SE_CHAR, c, 0, 0, NULL );
if( ( *c & 0x80 ) == 0 )
utf32 = *c++;
else if( ( *c & 0xE0 ) == 0xC0 ) // 110x xxxx
{
utf32 |= ( *c++ & 0x1F ) << 6;
utf32 |= ( *c++ & 0x3F );
}
else if( ( *c & 0xF0 ) == 0xE0 ) // 1110 xxxx
{
utf32 |= ( *c++ & 0x0F ) << 12;
utf32 |= ( *c++ & 0x3F ) << 6;
utf32 |= ( *c++ & 0x3F );
}
else if( ( *c & 0xF8 ) == 0xF0 ) // 1111 0xxx
{
utf32 |= ( *c++ & 0x07 ) << 18;
utf32 |= ( *c++ & 0x3F ) << 6;
utf32 |= ( *c++ & 0x3F ) << 6;
utf32 |= ( *c++ & 0x3F );
}
else
{
Com_DPrintf( "Unrecognised UTF-8 lead byte: 0x%x\n", (unsigned int)*c );
c++;
}
if( utf32 != 0 )
Com_QueueEvent( 0, SE_CHAR, utf32, 0, 0, NULL );
}
}
break;