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#define _BSD_SOURCE
#include <nl_types.h>
#include <endian.h>
#include <stdlib.h>
#include <stdint.h>
#include <errno.h>
#define V(p) be32toh(*(uint32_t *)(p))
static int cmp(const void *a, const void *b)
{
uint32_t x = V(a), y = V(b);
return x<y ? -1 : x>y ? 1 : 0;
}
char *catgets (nl_catd catd, int set_id, int msg_id, const char *s)
{
const char *map = (const char *)catd;
uint32_t nsets = V(map+4);
const char *sets = map+20;
const char *msgs = map+20+V(map+12);
const char *strings = map+20+V(map+16);
uint32_t set_id_be = htobe32(set_id);
uint32_t msg_id_be = htobe32(msg_id);
const char *set = bsearch(&set_id_be, sets, nsets, 12, cmp);
if (!set) {
errno = ENOMSG;
return (char *)s;
}
uint32_t nmsgs = V(set+4);
msgs += 12*V(set+8);
const char *msg = bsearch(&msg_id_be, msgs, nmsgs, 12, cmp);
if (!msg) {
errno = ENOMSG;
return (char *)s;
}
return (char *)(strings + V(msg+8));
}
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