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hex: introduce parsing variants taking hash algorithms

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Introduce variants of get_oid_hex and parse_oid_hex that parse an
arbitrary hash algorithm, implementing internal functions to avoid
duplication.  These functions can be used in the transport code to parse
refs properly.

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
2020-02-22 20:17:28 +00:00
committed by Junio C Hamano
parent 768e30ea27
commit dadacf10dc
2 changed files with 34 additions and 8 deletions
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7
cache.h
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@ -1481,6 +1481,9 @@ int set_disambiguate_hint_config(const char *var, const char *value);
int get_sha1_hex(const char *hex, unsigned char *sha1);
int get_oid_hex(const char *hex, struct object_id *sha1);
/* Like get_oid_hex, but for an arbitrary hash algorithm. */
int get_oid_hex_algop(const char *hex, struct object_id *oid, const struct git_hash_algo *algop);
/*
* Read `len` pairs of hexadecimal digits from `hex` and write the
* values to `binary` as `len` bytes. Return 0 on success, or -1 if
@ -1516,6 +1519,10 @@ char *oid_to_hex(const struct object_id *oid); /* same static buffer */
*/
int parse_oid_hex(const char *hex, struct object_id *oid, const char **end);
/* Like parse_oid_hex, but for an arbitrary hash algorithm. */
int parse_oid_hex_algop(const char *hex, struct object_id *oid, const char **end,
const struct git_hash_algo *algo);
/*
* This reads short-hand syntax that not only evaluates to a commit
* object name, but also can act as if the end user spelled the name