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packed-backend: new module for handling packed references
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>
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‎Makefile‎

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@@ -817,6 +817,7 @@ LIB_OBJS += reflog-walk.o
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LIB_OBJS += refs.o
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LIB_OBJS += refs/files-backend.o
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LIB_OBJS += refs/iterator.o
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LIB_OBJS += refs/packed-backend.o
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LIB_OBJS += refs/ref-cache.o
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LIB_OBJS += ref-filter.o
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LIB_OBJS += remote.o

‎refs.c‎

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@@ -173,6 +173,24 @@ int refname_is_safe(const char *refname)
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return 1;
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}
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/*
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* Return true if refname, which has the specified oid and flags, can
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* be resolved to an object in the database. If the referred-to object
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* does not exist, emit a warning and return false.
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*/
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int ref_resolves_to_object(const char *refname,
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const struct object_id *oid,
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unsigned int flags)
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{
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if (flags & REF_ISBROKEN)
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return 0;
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if (!has_sha1_file(oid->hash)) {
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error("%s does not point to a valid object!", refname);
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return 0;
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}
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return 1;
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}
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char *refs_resolve_refdup(struct ref_store *refs,
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const char *refname, int resolve_flags,
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unsigned char *sha1, int *flags)

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