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hex: introduce parse_oid_hex

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Introduce a function, parse_oid_hex, which parses a hexadecimal object
ID and if successful, sets a pointer to just beyond the last character.
This allows for simpler, more robust parsing without needing to
hard-code integer values throughout the codebase.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
brian m. carlson
2017-02-20 00:10:13 +00:00
committed by Junio C Hamano
parent 5588dbffbd
commit 605f430efb
2 changed files with 17 additions and 0 deletions
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8
hex.c
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@@ -53,6 +53,14 @@ int get_oid_hex(const char *hex, struct object_id *oid)
return get_sha1_hex(hex, oid->hash);
}
int parse_oid_hex(const char *hex, struct object_id *oid, const char **end)
{
int ret = get_oid_hex(hex, oid);
if (!ret)
*end = hex + GIT_SHA1_HEXSZ;
return ret;
}
char *sha1_to_hex_r(char *buffer, const unsigned char *sha1)
{
static const char hex[] = "0123456789abcdef";