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#include "locale.h"
#include <Carbon/Carbon.h>
#include <IOKit/hidsystem/ev_keymap.h>
#define internal static
#define local_persist static
internal CFStringRef
cfstring_from_keycode(CGKeyCode keycode)
{
TISInputSourceRef keyboard = TISCopyCurrentASCIICapableKeyboardLayoutInputSource();
CFDataRef uchr = (CFDataRef) TISGetInputSourceProperty(keyboard, kTISPropertyUnicodeKeyLayoutData);
CFRelease(keyboard);
UCKeyboardLayout *keyboard_layout = (UCKeyboardLayout *) CFDataGetBytePtr(uchr);
if(keyboard_layout) {
UInt32 dead_key_state = 0;
UniCharCount max_string_length = 255;
UniCharCount string_length = 0;
UniChar unicode_string[max_string_length];
OSStatus status = UCKeyTranslate(keyboard_layout, keycode,
kUCKeyActionDown, 0,
LMGetKbdType(), 0,
&dead_key_state,
max_string_length,
&string_length,
unicode_string);
if(string_length == 0 && dead_key_state) {
status = UCKeyTranslate(keyboard_layout, kVK_Space,
kUCKeyActionDown, 0,
LMGetKbdType(), 0,
&dead_key_state,
max_string_length,
&string_length,
unicode_string);
}
if(string_length > 0 && status == noErr) {
return CFStringCreateWithCharacters(NULL, unicode_string, string_length);
}
}
return NULL;
}
uint32_t keycode_from_char(char key)
{
uint32_t keycode = 0;
local_persist CFMutableDictionaryRef keycode_map = NULL;
if(!keycode_map) {
keycode_map = CFDictionaryCreateMutable(kCFAllocatorDefault, 128, &kCFCopyStringDictionaryKeyCallBacks, NULL);
for(unsigned index = 0; index < 128; ++index) {
CFStringRef key_string = cfstring_from_keycode(index);
if(key_string) {
CFDictionaryAddValue(keycode_map, key_string, (const void *)index);
CFRelease(key_string);
}
}
}
UniChar uni_char = key;
CFStringRef char_str = CFStringCreateWithCharacters(kCFAllocatorDefault, &uni_char, 1);
CFDictionaryGetValueIfPresent(keycode_map, char_str, (const void **)&keycode);
CFRelease(char_str);
return keycode;
}
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