blob: 8185b1af42211f0b1fd1993f33c60d4e2517f6dd [file] [log] [blame]
#include <stdlib.h>
#include <string.h>
#include <stdlib.h>
#include <inttypes.h>
#include "libucd_int.h"
#include "gen/nametoucs_hash.h"
static uint32_t prehash(const char *str)
{
uint32_t hash = PHASHSALT;
const uint8_t *p = (const uint8_t *)str;
while ( *p )
hash = (hash ^ *p++) + ((hash << 27)+(hash >> 5));
return hash;
}
/* This returns a candidate UCS for a given name. */
static int32_t name_lookup(const char *name)
{
int32_t ucs;
uint32_t hash;
if ( !strncmp(name, "CJK UNIFIED IDEOGRAPH-", 22) ) {
char *q;
ucs = strtol(name+22, &q, 16);
if ( *q || q < name+26 || q > name+27 )
return -1;
} else {
hash = _libucd_nametoucs_hash(prehash(name));
if ( hash > PHASHNKEYS )
return -1;
ucs = getint24(_libucd_nametoucs_tab[hash].ucs);
}
return ucs;
}
const struct unicode_character_data *
unicode_character_lookup(const char *name)
{
int32_t ucs = name_lookup(name);
const struct unicode_character_data *ucd =
unicode_character_data(ucs);
if ( !ucd )
return NULL;
if ( !ucd->name || strcmp(name, ucd->name) ) {
unicode_character_put(ucd);
errno = EINVAL;
return NULL;
}
return ucd;
}