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#include "lt_types.h"
typedef struct wchar_range { wchar first, last; } wchar_range;
static wchar_range wide_chars[] = {
#include "../wide.uni"
};
static wchar_range compose_table[] = {
#include "../compose.uni"
};
static wchar_range fmt_table[] = {
#include "../fmt.uni"
};
static wchar_range comb_table[] = {
{0x0644,0x0622}, {0x0644,0x0623}, {0x0644,0x0625}, {0x0644,0x0627},
};
static int is_in_table(wchar ch, wchar_range table[], int count) {
if (ch < table[0].first)
return 0;
int lo = 0;
int hi = count - 1;
while (lo <= hi) {
int mid = (lo + hi) / 2;
if (ch > table[mid].last)
lo = mid + 1;
else if (ch < table[mid].first)
hi = mid - 1;
else
return 1;
}
return 0;
}
int is_wide_char(wchar ch) {
return is_in_table(ch, wide_chars, countof(wide_chars));
}
int is_composing_char(wchar ch) {
return is_in_table(ch, compose_table, countof(compose_table)) ||
is_in_table(ch, fmt_table, countof(fmt_table));
}
int is_combining_char(wchar ch1, wchar ch2) {
int i;
for (i = 0; i < countof(comb_table); i++) {
if (ch1 == comb_table[i].first &&
ch2 == comb_table[i].last)
return 1;
}
return 0;
}
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