Commit b249b824fbd8134a3152b48798682db67aa45c68
2019-05-09T13:47:59
add APIs to change references
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diff --git a/include/got_error.h b/include/got_error.h
index c5fb394..c3c1b5a 100644
--- a/include/got_error.h
+++ b/include/got_error.h
@@ -83,6 +83,7 @@
#define GOT_ERR_FILE_MODIFIED 67
#define GOT_ERR_FILE_STATUS 68
#define GOT_ERR_COMMIT_CONFLICT 69
+#define GOT_ERR_BAD_REF_TYPE 70
static const struct got_error {
int code;
@@ -157,6 +158,7 @@ static const struct got_error {
{ GOT_ERR_FILE_MODIFIED,"file contains modifications" },
{ GOT_ERR_FILE_STATUS, "file has unexpected status" },
{ GOT_ERR_COMMIT_CONFLICT,"cannot commit file in conflicted status" },
+ { GOT_ERR_BAD_REF_TYPE, "bad reference type" },
};
/*
diff --git a/include/got_reference.h b/include/got_reference.h
index cf87b34..5c3eed9 100644
--- a/include/got_reference.h
+++ b/include/got_reference.h
@@ -77,6 +77,18 @@ const struct got_error *got_ref_list(struct got_reflist_head *,
/* Free all references on a ref list. */
void got_ref_list_free(struct got_reflist_head *);
+/* Indicate whether the provided reference is symbolic (points at another
+ * refernce) or not (points at an object ID). */
+int got_ref_is_symbolic(struct got_reference *);
+
+/* Change the object ID a reference points to. */
+const struct got_error *
+got_ref_change_ref(struct got_reference *, struct got_object_id *);
+
+/* Change the reference name a symbolic reference points to. */
+const struct got_error *got_ref_change_symref(struct got_reference *,
+ char *);
+
/* Write a reference to its on-disk path in the repository. */
const struct got_error *got_ref_write(struct got_reference *,
struct got_repository *);
diff --git a/lib/reference.c b/lib/reference.c
index f01bb78..168ef0c 100644
--- a/lib/reference.c
+++ b/lib/reference.c
@@ -765,6 +765,39 @@ got_ref_list_free(struct got_reflist_head *refs)
}
+int
+got_ref_is_symbolic(struct got_reference *ref)
+{
+ return (ref->flags & GOT_REF_IS_SYMBOLIC);
+}
+
+const struct got_error *
+got_ref_change_ref(struct got_reference *ref, struct got_object_id *id)
+{
+ if (ref->flags & GOT_REF_IS_SYMBOLIC)
+ return got_error(GOT_ERR_BAD_REF_TYPE);
+
+ memcpy(ref->ref.ref.sha1, id->sha1, sizeof(ref->ref.ref.sha1));
+ return NULL;
+}
+
+const struct got_error *
+got_ref_change_symref(struct got_reference *ref, char *refname)
+{
+ char *new_name;
+
+ if ((ref->flags & GOT_REF_IS_SYMBOLIC) == 0)
+ return got_error(GOT_ERR_BAD_REF_TYPE);
+
+ new_name = strdup(refname);
+ if (new_name == NULL)
+ return got_error_from_errno();
+
+ free(ref->ref.symref.name);
+ ref->ref.symref.name = new_name;
+ return NULL;
+}
+
const struct got_error *
got_ref_write(struct got_reference *ref, struct got_repository *repo)
{