From: Elijah Newren <newren@xxxxxxxxx>
There are a few differences between the new API in merge-ort and the old
API in merge-recursive. While the new API is more flexible, it might
feel like more work at times than the old API. merge-ort-wrappers
creates two convenience wrappers taking the exact same arguments as the
old merge_trees() and merge_recursive() functions and implements them
via the new API. This makes converting existing callsites easier, and
serves to highlight some of the differences in the API.
Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
Makefile | 1 +
merge-ort-wrappers.c | 62 ++++++++++++++++++++++++++++++++++++++++++++
merge-ort-wrappers.h | 25 ++++++++++++++++++
3 files changed, 88 insertions(+)
create mode 100644 merge-ort-wrappers.c
create mode 100644 merge-ort-wrappers.h
diff --git a/Makefile b/Makefile
index 088770c2ae..382fe73c76 100644
--- a/Makefile
+++ b/Makefile
@@ -922,6 +922,7 @@ LIB_OBJS += match-trees.o
LIB_OBJS += mem-pool.o
LIB_OBJS += merge-blobs.o
LIB_OBJS += merge-ort.o
+LIB_OBJS += merge-ort-wrappers.o
LIB_OBJS += merge-recursive.o
LIB_OBJS += merge.o
LIB_OBJS += mergesort.o
diff --git a/merge-ort-wrappers.c b/merge-ort-wrappers.c
new file mode 100644
index 0000000000..e96c1a71be
--- /dev/null
+++ b/merge-ort-wrappers.c
@@ -0,0 +1,62 @@
+#include "cache.h"
+#include "merge-ort.h"
+#include "merge-ort-wrappers.h"
+
+#include "commit.h"
+
+static int unclean(struct merge_options *opt, struct tree *head)
+{
+ /* Sanity check on repo state; index must match head */
+ struct strbuf sb = STRBUF_INIT;
+
+ if (head && repo_index_has_changes(opt->repo, head, &sb)) {
+ fprintf(stderr, _("Your local changes to the following files would be overwritten by merge:\n %s"),
+ sb.buf);
+ strbuf_release(&sb);
+ return -1;
+ }
+
+ return 0;
+}
+
+int merge_ort_nonrecursive(struct merge_options *opt,
+ struct tree *head,
+ struct tree *merge,
+ struct tree *merge_base)
+{
+ struct merge_result result;
+
+ if (unclean(opt, head))
+ return -1;
+
+ if (oideq(&merge_base->object.oid, &merge->object.oid)) {
+ printf(_("Already up to date!"));
+ return 1;
+ }
+
+ memset(&result, 0, sizeof(result));
+ merge_inmemory_nonrecursive(opt, merge_base, head, merge, &result);
+ merge_switch_to_result(opt, head, &result, 1, 1);
+
+ return result.clean;
+}
+
+int merge_ort_recursive(struct merge_options *opt,
+ struct commit *side1,
+ struct commit *side2,
+ struct commit_list *merge_bases,
+ struct commit **result)
+{
+ struct tree *head = repo_get_commit_tree(opt->repo, side1);
+ struct merge_result tmp;
+
+ if (unclean(opt, head))
+ return -1;
+
+ memset(&tmp, 0, sizeof(tmp));
+ merge_inmemory_recursive(opt, merge_bases, side1, side2, &tmp);
+ merge_switch_to_result(opt, head, &tmp, 1, 1);
+ *result = NULL;
+
+ return tmp.clean;
+}
diff --git a/merge-ort-wrappers.h b/merge-ort-wrappers.h
new file mode 100644
index 0000000000..0c4c57adbb
--- /dev/null
+++ b/merge-ort-wrappers.h
@@ -0,0 +1,25 @@
+#ifndef MERGE_ORT_WRAPPERS_H
+#define MERGE_ORT_WRAPPERS_H
+
+#include "merge-recursive.h"
+
+/*
+ * rename-detecting three-way merge, no recursion.
+ * Wrapper mimicking the old merge_trees() function.
+ */
+int merge_ort_nonrecursive(struct merge_options *opt,
+ struct tree *head,
+ struct tree *merge,
+ struct tree *common);
+
+/*
+ * rename-detecting three-way merge with recursive ancestor consolidation.
+ * Wrapper mimicking the old merge_recursive() function.
+ */
+int merge_ort_recursive(struct merge_options *opt,
+ struct commit *h1,
+ struct commit *h2,
+ struct commit_list *ancestors,
+ struct commit **result);
+
+#endif
--
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