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/* See LICENSE file for copyright and license details. */
#include "common.h"
int
is_noncharacter(uint32_t cp)
{
return (0xFDD0u <= cp && cp <= 0xFDEFu) || (cp & 0xFFFEu) == 0xFFFEu;
}
int
is_surrogate(uint32_t cp)
{
return 0xD800u <= cp && cp <= 0xDFFFu;
}
int
is_valid_codepoint(uint32_t cp)
{
return cp <= LIBCMAP_ULTIMATE_CODEPOINT && !is_noncharacter(cp) && !is_surrogate(cp);
}
struct libcmap_codepoint_data *
get_codepoint_data(uint32_t cp)
{
static char *databuf = NULL;
static size_t databufsize = 0u;
static struct libcmap_codepoint_data data;
int r;
again:
r = libcmap_get_codepoint_data(cp, &data, databuf, &databufsize);
if (r <= 0) {
if (!r || errno != ERANGE || !databufsize)
return NULL;
databuf = erealloc(databuf, databufsize);
goto again;
}
return &data;
}
enum codepoint_class
classify_from_codepoint_data(const struct libcmap_codepoint_data *data)
{
if (!data)
return CP_OUT_OF_RANGE;
switch ((int)(data->general_category & LIBCMAP_GENERAL_SUPERCATEGORY_MASK)) {
case LIBCMAP_GENERAL_SUPERCATEGORY_MARK:
return CP_COMBINING_MARK;
default:
break;
}
switch ((int)data->general_category) {
case LIBCMAP_GENERAL_CATEGORY_OTHER_CONTROL:
return CP_CONTROL;
case LIBCMAP_GENERAL_CATEGORY_OTHER_SURROGATE:
return CP_SURROGATE;
case LIBCMAP_GENERAL_CATEGORY_OTHER_NOT_ASSIGNED:
return data->noncharacter ? CP_NONCHARACTER : CP_RESERVED;
default:
break;
}
return CP_REGULAR;
}
enum codepoint_class
classify_codepoint(uint32_t cp)
{
return classify_from_codepoint_data(get_codepoint_data(cp));
}
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