Add a ref structure for backend methods. Start by adding method pointers
for the transaction functions.
Rename the existing transaction functions to files_* and make them static.
Add new transaction functions that just pass through to the appropriate
methods for the backend.
Signed-off-by: Ronnie Sahlberg <sahlb...@google.com>
---
refs-common.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++
refs.c | 68 +++++++++++++++++++++++++++++++++++------------------------
refs.h | 35 ++++++++++++++++++++++++++++++
3 files changed, 130 insertions(+), 27 deletions(-)
diff --git a/refs-common.c b/refs-common.c
index 3b20db3..d4782ad 100644
--- a/refs-common.c
+++ b/refs-common.c
@@ -784,3 +784,57 @@ int check_refname_format(const char *refname, int flags)
return -1; /* Refname has only one component. */
return 0;
}
+
+/* backend functions */
+struct ref_transaction *transaction_begin(struct strbuf *err)
+{
+ return refs->transaction_begin(err);
+}
+
+int transaction_update_sha1(struct ref_transaction *transaction,
+ const char *refname, const unsigned char *new_sha1,
+ const unsigned char *old_sha1, int flags,
+ int have_old, const char *msg, struct strbuf *err)
+{
+ return refs->transaction_update_sha1(transaction, refname, new_sha1,
+ old_sha1, flags, have_old, msg,
+ err);
+}
+
+int transaction_create_sha1(struct ref_transaction *transaction,
+ const char *refname, const unsigned char *new_sha1,
+ int flags, const char *msg, struct strbuf *err)
+{
+ return refs->transaction_create_sha1(transaction, refname, new_sha1,
+ flags, msg, err);
+}
+int transaction_delete_sha1(struct ref_transaction *transaction,
+ const char *refname, const unsigned char *old_sha1,
+ int flags, int have_old, const char *msg,
+ struct strbuf *err)
+{
+ return refs->transaction_delete_sha1(transaction, refname, old_sha1,
+ flags, have_old, msg, err);
+}
+
+int transaction_update_reflog(struct ref_transaction *transaction,
+ const char *refname,
+ const unsigned char *new_sha1,
+ const unsigned char *old_sha1,
+ struct reflog_committer_info *ci,
+ const char *msg, int flags,
+ struct strbuf *err)
+{
+ return refs->transaction_update_reflog(transaction, refname, new_sha1,
+ old_sha1, ci, msg, flags, err);
+}
+
+int transaction_commit(struct ref_transaction *transaction, struct strbuf *err)
+{
+ return refs->transaction_commit(transaction, err);
+}
+
+void transaction_free(struct ref_transaction *transaction)
+{
+ return refs->transaction_free(transaction);
+}
diff --git a/refs.c b/refs.c
index 9aa88ef..bfb42d8 100644
--- a/refs.c
+++ b/refs.c
@@ -2792,12 +2792,12 @@ struct ref_transaction {
enum ref_transaction_state state;
};
-struct ref_transaction *transaction_begin(struct strbuf *err)
+static struct ref_transaction *files_transaction_begin(struct strbuf *err)
{
return xcalloc(1, sizeof(struct ref_transaction));
}
-void transaction_free(struct ref_transaction *transaction)
+static void files_transaction_free(struct ref_transaction *transaction)
{
int i;
@@ -2827,13 +2827,13 @@ static struct ref_update *add_update(struct
ref_transaction *transaction,
return update;
}
-int transaction_update_reflog(struct ref_transaction *transaction,
- const char *refname,
- const unsigned char *new_sha1,
- const unsigned char *old_sha1,
- struct reflog_committer_info *ci,
- const char *msg, int flags,
- struct strbuf *err)
+static int files_transaction_update_reflog(struct ref_transaction *transaction,
+ const char *refname,
+ const unsigned char *new_sha1,
+ const unsigned char *old_sha1,
+ struct reflog_committer_info *ci,
+ const char *msg, int flags,
+ struct strbuf *err)
{
struct ref_update *update;
int i;
@@ -2880,12 +2880,13 @@ int transaction_update_reflog(struct ref_transaction
*transaction,
return 0;
}
-int transaction_update_sha1(struct ref_transaction *transaction,
- const char *refname,
- const unsigned char *new_sha1,
- const unsigned char *old_sha1,
- int flags, int have_old, const char *msg,
- struct strbuf *err)
+static int files_transaction_update_sha1(struct ref_transaction *transaction,
+ const char *refname,
+ const unsigned char *new_sha1,
+ const unsigned char *old_sha1,
+ int flags, int have_old,
+ const char *msg,
+ struct strbuf *err)
{
struct ref_update *update;
@@ -2912,11 +2913,11 @@ int transaction_update_sha1(struct ref_transaction
*transaction,
return 0;
}
-int transaction_create_sha1(struct ref_transaction *transaction,
- const char *refname,
- const unsigned char *new_sha1,
- int flags, const char *msg,
- struct strbuf *err)
+static int files_transaction_create_sha1(struct ref_transaction *transaction,
+ const char *refname,
+ const unsigned char *new_sha1,
+ int flags, const char *msg,
+ struct strbuf *err)
{
if (transaction->state != REF_TRANSACTION_OPEN)
die("BUG: create called for transaction that is not open");
@@ -2928,11 +2929,12 @@ int transaction_create_sha1(struct ref_transaction
*transaction,
null_sha1, flags, 1, msg, err);
}
-int transaction_delete_sha1(struct ref_transaction *transaction,
- const char *refname,
- const unsigned char *old_sha1,
- int flags, int have_old, const char *msg,
- struct strbuf *err)
+static int files_transaction_delete_sha1(struct ref_transaction *transaction,
+ const char *refname,
+ const unsigned char *old_sha1,
+ int flags, int have_old,
+ const char *msg,
+ struct strbuf *err)
{
if (transaction->state != REF_TRANSACTION_OPEN)
die("BUG: delete called for transaction that is not open");
@@ -2974,8 +2976,8 @@ static int ref_update_reject_duplicates(struct ref_update
**updates, int n,
return 0;
}
-int transaction_commit(struct ref_transaction *transaction,
- struct strbuf *err)
+static int files_transaction_commit(struct ref_transaction *transaction,
+ struct strbuf *err)
{
int ret = 0, delnum = 0, i, df_conflict = 0, need_repack = 0;
int num_updates = 0;
@@ -3299,3 +3301,15 @@ cleanup:
ret = -2;
return ret;
}
+
+struct ref_be refs_files = {
+ .transaction_begin = files_transaction_begin,
+ .transaction_update_sha1 = files_transaction_update_sha1,
+ .transaction_create_sha1 = files_transaction_create_sha1,
+ .transaction_delete_sha1 = files_transaction_delete_sha1,
+ .transaction_update_reflog = files_transaction_update_reflog,
+ .transaction_commit = files_transaction_commit,
+ .transaction_free = files_transaction_free,
+};
+
+struct ref_be *refs = &refs_files;
diff --git a/refs.h b/refs.h
index 5577824..7b92241 100644
--- a/refs.h
+++ b/refs.h
@@ -350,4 +350,39 @@ int update_ref(const char *action, const char *refname,
extern int parse_hide_refs_config(const char *var, const char *value, const
char *);
extern int ref_is_hidden(const char *);
+
+/* refs backends */
+typedef struct ref_transaction *(*transaction_begin_fn)(struct strbuf *err);
+typedef int (*transaction_update_sha1_fn)(struct ref_transaction *transaction,
+ const char *refname, const unsigned char *new_sha1,
+ const unsigned char *old_sha1, int flags, int have_old,
+ const char *msg, struct strbuf *err);
+typedef int (*transaction_create_sha1_fn)(struct ref_transaction *transaction,
+ const char *refname, const unsigned char *new_sha1,
+ int flags, const char *msg, struct strbuf *err);
+typedef int (*transaction_delete_sha1_fn)(struct ref_transaction *transaction,
+ const char *refname, const unsigned char *old_sha1,
+ int flags, int have_old, const char *msg, struct strbuf *err);
+typedef int (*transaction_update_reflog_fn)(
+ struct ref_transaction *transaction,
+ const char *refname, const unsigned char *new_sha1,
+ const unsigned char *old_sha1,
+ struct reflog_committer_info *ci,
+ const char *msg, int flags, struct strbuf *err);
+typedef int (*transaction_commit_fn)(struct ref_transaction *transaction,
+ struct strbuf *err);
+typedef void (*transaction_free_fn)(struct ref_transaction *transaction);
+
+struct ref_be {
+ transaction_begin_fn transaction_begin;
+ transaction_update_sha1_fn transaction_update_sha1;
+ transaction_create_sha1_fn transaction_create_sha1;
+ transaction_delete_sha1_fn transaction_delete_sha1;
+ transaction_update_reflog_fn transaction_update_reflog;
+ transaction_commit_fn transaction_commit;
+ transaction_free_fn transaction_free;
+};
+
+extern struct ref_be *refs;
+
#endif /* REFS_H */
--
2.0.1.553.geee1b3e
--
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