From 47b1e890e3f7ba57e8c5bc364dcb04d8b2dc1c58 Mon Sep 17 00:00:00 2001 From: Elijah Newren Date: Tue, 27 Oct 2020 02:08:08 +0000 Subject: [PATCH] merge-ort-wrappers: new convience wrappers to mimic the old merge API 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 Signed-off-by: Junio C Hamano --- 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 bb9181e3af..9eb8e9628b 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..7eec25f93a --- /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_incore_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_incore_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