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| author | Stephan Beyer <s-beyer@gmx.net> | 2008-08-12 22:13:59 +0200 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2008-08-30 20:46:54 -0700 |
| commit | 73118f89b81f5a3ed1bb56e2517627d56e9ebdfb (patch) | |
| tree | f564d0d2f7265be0074471baaf2e90a1a5ba771c /builtin-merge-recursive.c | |
| parent | 9047ebbc229bf5b99d6c7522293b8cbd1100b747 (diff) | |
| download | git-73118f89b81f5a3ed1bb56e2517627d56e9ebdfb.tar.gz git-73118f89b81f5a3ed1bb56e2517627d56e9ebdfb.tar.xz | |
merge-recursive.c: Add more generic merge_recursive_generic()
merge_recursive_generic() takes, in comparison to to merge_recursive(),
no commit ("struct commit *") arguments but SHA ids ("unsigned char *"),
and no commit list of bases but an array of refs ("const char **").
This makes it more generic in the case that it can also take the SHA
of a tree to merge trees without commits, for the bases, the head
and the remote.
merge_recursive_generic() also handles locking and updating of the
index, which is a common use case of merge_recursive().
This patch also rewrites builtin-merge-recursive.c to make use of
merge_recursive_generic(). By doing this, I stumbled over the
limitation of 20 bases and I've added a warning if this limitation
is exceeded.
This patch qualifies make_virtual_commit() as static again because
this function is not needed anymore outside merge-recursive.c.
Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-merge-recursive.c')
| -rw-r--r-- | builtin-merge-recursive.c | 64 |
1 files changed, 19 insertions, 45 deletions
diff --git a/builtin-merge-recursive.c b/builtin-merge-recursive.c index 8bf2fa5df..25f540b4a 100644 --- a/builtin-merge-recursive.c +++ b/builtin-merge-recursive.c @@ -15,36 +15,13 @@ static const char *better_branch_name(const char *branch) return name ? name : branch; } -static struct commit *get_ref(const char *ref) -{ - unsigned char sha1[20]; - struct object *object; - - if (get_sha1(ref, sha1)) - die("Could not resolve ref '%s'", ref); - object = deref_tag(parse_object(sha1), ref, strlen(ref)); - if (!object) - return NULL; - if (object->type == OBJ_TREE) - return make_virtual_commit((struct tree*)object, - better_branch_name(ref)); - if (object->type != OBJ_COMMIT) - return NULL; - if (parse_commit((struct commit *)object)) - die("Could not parse commit '%s'", sha1_to_hex(object->sha1)); - return (struct commit *)object; -} - int cmd_merge_recursive(int argc, const char **argv, const char *prefix) { - static const char *bases[20]; - static unsigned bases_count = 0; - int i, clean; + const char *bases[21]; + unsigned bases_count = 0; + int i, failed; const char *branch1, *branch2; - struct commit *result, *h1, *h2; - struct commit_list *ca = NULL; - struct lock_file *lock = xcalloc(1, sizeof(struct lock_file)); - int index_fd; + unsigned char h1[20], h2[20]; int subtree_merge = 0; if (argv[0]) { @@ -60,10 +37,15 @@ int cmd_merge_recursive(int argc, const char **argv, const char *prefix) die("Usage: %s <base>... -- <head> <remote> ...\n", argv[0]); for (i = 1; i < argc; ++i) { - if (!strcmp(argv[i], "--")) + if (!strcmp(argv[i], "--")) { + bases[bases_count] = NULL; break; - if (bases_count < sizeof(bases)/sizeof(*bases)) + } + if (bases_count < ARRAY_SIZE(bases)-1) bases[bases_count++] = argv[i]; + else + warning("Cannot handle more than %zu bases. " + "Ignoring %s.", ARRAY_SIZE(bases)-1, argv[i]); } if (argc - i != 3) /* "--" "<head>" "<remote>" */ die("Not handling anything other than two heads merge."); @@ -71,8 +53,10 @@ int cmd_merge_recursive(int argc, const char **argv, const char *prefix) branch1 = argv[++i]; branch2 = argv[++i]; - h1 = get_ref(branch1); - h2 = get_ref(branch2); + if (get_sha1(branch1, h1)) + die("Could not resolve ref '%s'", branch1); + if (get_sha1(branch2, h2)) + die("Could not resolve ref '%s'", branch2); branch1 = better_branch_name(branch1); branch2 = better_branch_name(branch2); @@ -80,18 +64,8 @@ int cmd_merge_recursive(int argc, const char **argv, const char *prefix) if (merge_recursive_verbosity >= 3) printf("Merging %s with %s\n", branch1, branch2); - index_fd = hold_locked_index(lock, 1); - - for (i = 0; i < bases_count; i++) { - struct commit *ancestor = get_ref(bases[i]); - ca = commit_list_insert(ancestor, &ca); - } - clean = merge_recursive(h1, h2, branch1, branch2, ca, &result); - - if (active_cache_changed && - (write_cache(index_fd, active_cache, active_nr) || - commit_locked_index(lock))) - die ("unable to write %s", get_index_file()); - - return clean ? 0: 1; + failed = merge_recursive_generic(bases, h1, branch1, h2, branch2); + if (failed < 0) + return 128; /* die() error code */ + return failed; } |