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packed-backend: new module for handling packed references

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Now that the interface between `files_ref_store` and
`packed_ref_store` is relatively narrow, move the latter into a new
module, "refs/packed-backend.h" and "refs/packed-backend.c". It still
doesn't quite implement the `ref_store` interface, but it will soon.

This commit moves code around and adjusts its visibility, but doesn't
change anything.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty
2017-06-23 09:01:37 +02:00
committed by Junio C Hamano
parent d13fa1a9ba
commit 67be7c5a59
6 changed files with 685 additions and 639 deletions
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18
refs.c
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@ -173,6 +173,24 @@ int refname_is_safe(const char *refname)
return 1;
}
/*
* Return true if refname, which has the specified oid and flags, can
* be resolved to an object in the database. If the referred-to object
* does not exist, emit a warning and return false.
*/
int ref_resolves_to_object(const char *refname,
const struct object_id *oid,
unsigned int flags)
{
if (flags & REF_ISBROKEN)
return 0;
if (!has_sha1_file(oid->hash)) {
error("%s does not point to a valid object!", refname);
return 0;
}
return 1;
}
char *refs_resolve_refdup(struct ref_store *refs,
const char *refname, int resolve_flags,
unsigned char *sha1, int *flags)