diff options
Diffstat (limited to 'src/locale/catgets.c')
-rw-r--r-- | src/locale/catgets.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/src/locale/catgets.c b/src/locale/catgets.c index bbee8986..d4a44b35 100644 --- a/src/locale/catgets.c +++ b/src/locale/catgets.c @@ -1,6 +1,38 @@ +#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)) + +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) { - return (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)); } |