refs: use strncmp() instead of strlen() and memcmp()

Simplify ref_entry_cmp_sslice() by using strncmp() to compare the
length-limited key and a NUL-terminated entry.  While we're at it,
retain the const attribute of the input pointers.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2013-01-16 02:08:16 +01:00 committed by Junio C Hamano
parent e1980c9d23
commit c971ddfdcd

10
refs.c
View File

@ -322,14 +322,12 @@ struct string_slice {
static int ref_entry_cmp_sslice(const void *key_, const void *ent_)
{
struct string_slice *key = (struct string_slice *)key_;
struct ref_entry *ent = *(struct ref_entry **)ent_;
int entlen = strlen(ent->name);
int cmplen = key->len < entlen ? key->len : entlen;
int cmp = memcmp(key->str, ent->name, cmplen);
const struct string_slice *key = key_;
const struct ref_entry *ent = *(const struct ref_entry * const *)ent_;
int cmp = strncmp(key->str, ent->name, key->len);
if (cmp)
return cmp;
return key->len - entlen;
return '\0' - (unsigned char)ent->name[key->len];
}
/*