#ifndef REFS_REFS_INTERNAL_H
#define REFS_REFS_INTERNAL_H
+#include "iterator.h"
+
/*
* Data structures and functions for the internal use of the refs
* module. Code outside of the refs module should use only the public
*/
/*
- * Flag passed to lock_ref_sha1_basic() telling it to tolerate broken
- * refs (i.e., because the reference is about to be deleted anyway).
- */
-#define REF_DELETING 0x02
-
-/*
- * Used as a flag in ref_update::flags when a loose ref is being
- * pruned. This flag must only be used when REF_NODEREF is set.
- */
-#define REF_ISPRUNING 0x04
-
-/*
- * Used as a flag in ref_update::flags when the reference should be
- * updated to new_sha1.
- */
-#define REF_HAVE_NEW 0x08
-
-/*
- * Used as a flag in ref_update::flags when old_sha1 should be
- * checked.
+ * The following flags can appear in `ref_update::flags`. Their
+ * numerical values must not conflict with those of REF_NO_DEREF and
+ * REF_FORCE_CREATE_REFLOG, which are also stored in
+ * `ref_update::flags`.
*/
-#define REF_HAVE_OLD 0x10
/*
- * Used as a flag in ref_update::flags when the lockfile needs to be
- * committed.
+ * The reference should be updated to new_oid.
*/
-#define REF_NEEDS_COMMIT 0x20
+#define REF_HAVE_NEW (1 << 2)
/*
- * 0x40 is REF_FORCE_CREATE_REFLOG, so skip it if you're adding a
- * value to ref_update::flags
+ * The current reference's value should be checked to make sure that
+ * it agrees with old_oid.
*/
-
-/*
- * Used as a flag in ref_update::flags when we want to log a ref
- * update but not actually perform it. This is used when a symbolic
- * ref update is split up.
- */
-#define REF_LOG_ONLY 0x80
-
-/*
- * Internal flag, meaning that the containing ref_update was via an
- * update to HEAD.
- */
-#define REF_UPDATE_VIA_HEAD 0x100
-
-/*
- * Used as a flag in ref_update::flags when the loose reference has
- * been deleted.
- */
-#define REF_DELETED_LOOSE 0x200
+#define REF_HAVE_OLD (1 << 3)
/*
* Return the length of time to retry acquiring a loose reference lock
/*
* Peel the named object; i.e., if the object is a tag, resolve the
* tag recursively until a non-tag is found. If successful, store the
- * result to sha1 and return PEEL_PEELED. If the object is not a tag
+ * result to oid and return PEEL_PEELED. If the object is not a tag
* or is not valid, return PEEL_NON_TAG or PEEL_INVALID, respectively,
- * and leave sha1 unchanged.
+ * and leave oid unchanged.
*/
-enum peel_status peel_object(const unsigned char *name, unsigned char *sha1);
+enum peel_status peel_object(const struct object_id *name, struct object_id *oid);
/*
- * Copy the reflog message msg to buf, which has been allocated sufficiently
- * large, while cleaning up the whitespaces. Especially, convert LF to space,
- * because reflog file is one line per entry.
+ * Copy the reflog message msg to sb while cleaning up the whitespaces.
+ * Especially, convert LF to space, because reflog file is one line per entry.
*/
-int copy_reflog_msg(char *buf, const char *msg);
+void copy_reflog_msg(struct strbuf *sb, const char *msg);
/**
- * Information needed for a single ref update. Set new_sha1 to the new
- * value or to null_sha1 to delete the ref. To check the old value
- * while the ref is locked, set (flags & REF_HAVE_OLD) and set
- * old_sha1 to the old value, or to null_sha1 to ensure the ref does
- * not exist before update.
+ * Information needed for a single ref update. Set new_oid to the new
+ * value or to null_oid to delete the ref. To check the old value
+ * while the ref is locked, set (flags & REF_HAVE_OLD) and set old_oid
+ * to the old value, or to null_oid to ensure the ref does not exist
+ * before update.
*/
struct ref_update {
-
/*
- * If (flags & REF_HAVE_NEW), set the reference to this value:
+ * If (flags & REF_HAVE_NEW), set the reference to this value
+ * (or delete it, if `new_oid` is `null_oid`).
*/
struct object_id new_oid;
/*
* If (flags & REF_HAVE_OLD), check that the reference
- * previously had this value:
+ * previously had this value (or didn't previously exist, if
+ * `old_oid` is `null_oid`).
*/
struct object_id old_oid;
/*
- * One or more of REF_HAVE_NEW, REF_HAVE_OLD, REF_NODEREF,
- * REF_DELETING, REF_ISPRUNING, REF_LOG_ONLY,
- * REF_UPDATE_VIA_HEAD, REF_NEEDS_COMMIT, and
- * REF_DELETED_LOOSE:
+ * One or more of REF_NO_DEREF, REF_FORCE_CREATE_REFLOG,
+ * REF_HAVE_NEW, REF_HAVE_OLD, or backend-specific flags.
*/
unsigned int flags;
};
int refs_read_raw_ref(struct ref_store *ref_store,
- const char *refname, unsigned char *sha1,
+ const char *refname, struct object_id *oid,
struct strbuf *referent, unsigned int *type);
/*
/*
* Add a ref_update with the specified properties to transaction, and
* return a pointer to the new object. This function does not verify
- * that refname is well-formed. new_sha1 and old_sha1 are only
+ * that refname is well-formed. new_oid and old_oid are only
* dereferenced if the REF_HAVE_NEW and REF_HAVE_OLD bits,
* respectively, are set in flags.
*/
struct ref_update *ref_transaction_add_update(
struct ref_transaction *transaction,
const char *refname, unsigned int flags,
- const unsigned char *new_sha1,
- const unsigned char *old_sha1,
+ const struct object_id *new_oid,
+ const struct object_id *old_oid,
const char *msg);
/*
int force_create, struct strbuf *err);
typedef int delete_reflog_fn(struct ref_store *ref_store, const char *refname);
typedef int reflog_expire_fn(struct ref_store *ref_store,
- const char *refname, const unsigned char *sha1,
+ const char *refname, const struct object_id *oid,
unsigned int flags,
reflog_expiry_prepare_fn prepare_fn,
reflog_expiry_should_prune_fn should_prune_fn,
* Read a reference from the specified reference store, non-recursively.
* Set type to describe the reference, and:
*
- * - If refname is the name of a normal reference, fill in sha1
+ * - If refname is the name of a normal reference, fill in oid
* (leaving referent unchanged).
*
* - If refname is the name of a symbolic reference, write the full
* name of the reference to which it refers (e.g.
* "refs/heads/master") to referent and set the REF_ISSYMREF bit in
- * type (leaving sha1 unchanged). The caller is responsible for
+ * type (leaving oid unchanged). The caller is responsible for
* validating that referent is a valid reference name.
*
* WARNING: refname might be used as part of a filename, so it is
*
* Return 0 on success. If the ref doesn't exist, set errno to ENOENT
* and return -1. If the ref exists but is neither a symbolic ref nor
- * a sha1, it is broken; set REF_ISBROKEN in type, set errno to
+ * an object ID, it is broken; set REF_ISBROKEN in type, set errno to
* EINVAL, and return -1. If there is another error reading the ref,
* set errno appropriately and return -1.
*
* refname will still be valid and unchanged.
*/
typedef int read_raw_ref_fn(struct ref_store *ref_store,
- const char *refname, unsigned char *sha1,
+ const char *refname, struct object_id *oid,
struct strbuf *referent, unsigned int *type);
struct ref_storage_be {