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#include <assert.h>
struct ksmap {
int keysym;
unsigned int ucs;
};
#include "kstoucs_map.c"
/* Binary search through `kstoucs_map'. */
static unsigned int
find_ucs (int keysym, struct ksmap *first, struct ksmap *last)
{
struct ksmap *middle = first + (last - first) / 2;
assert (first <= last);
if (middle->keysym == keysym)
return middle->ucs; /* base case: needle found. */
else if (first == last /* empty search space */
|| keysym < first->keysym /* lookup failure */
|| keysym > last->keysym) /* lookup failure */
return 0;
/* recursive cases: halve search space. */
else if (middle->keysym < keysym)
return find_ucs (keysym, middle+1, last);
else if (middle->keysym > keysym)
return find_ucs (keysym, first, middle-1);
return 0;
}
unsigned int
KeySymToUcs4 (int keysym)
{
#ifdef XKB_DEBUG
char *XKeysymToString(int keysym);
printf ("KeySymToUcs4: %s (%d) -> ", XKeysymToString (keysym), keysym);
unsigned int doit (int keysym)
{
#endif
/* Control characters not covered by keysym map. */
if (keysym > 0 && keysym < 32)
return keysym;
/* 'Unicode keysym' */
if ((keysym & 0xff000000) == 0x01000000)
return (keysym & 0x00ffffff);
#define NUM_KEYSYMS (sizeof kstoucs_map / sizeof(struct ksmap))
return find_ucs(keysym, &kstoucs_map[0], &kstoucs_map[NUM_KEYSYMS - 1]);
#ifdef XKB_DEBUG
}
unsigned int ret = doit (keysym);
printf ("%d\n", ret);
return ret;
#endif
}
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