git-merge-ours: make it a builtin.

Except that this fixes a longstanding corner case bug by
tightening the way underlying diff-index command is run, it is
functionally equivalent to the scripted version.

Signed-off-by: Thomas Harning Jr <harningt@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Makefile b/Makefile
index cabde8177e1dd2ad03c558339f932b6959a9bce2..7a0ee780dc9c8d7129431ebeafb6805b4a4c9dd6 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -221,7 +221,7 @@ SCRIPT_SH = \
        git-sh-setup.sh \
        git-am.sh \
        git-merge.sh git-merge-stupid.sh git-merge-octopus.sh \
-       git-merge-resolve.sh git-merge-ours.sh \
+       git-merge-resolve.sh \
        git-lost-found.sh git-quiltimport.sh git-submodule.sh \
        git-filter-branch.sh \
        git-stash.sh
@@ -353,6 +353,7 @@ BUILTIN_OBJS = \
        builtin-mailsplit.o \
        builtin-merge-base.o \
        builtin-merge-file.o \
+       builtin-merge-ours.o \
        builtin-mv.o \
        builtin-name-rev.o \
        builtin-pack-objects.o \

diff --git a/builtin-merge-ours.c b/builtin-merge-ours.c
new file mode 100644 (file)
index 0000000..8f5bbaf
--- /dev/null
+++ b/builtin-merge-ours.c
@@ -0,0 +1,28 @@
+/*
+ * Implementation of git-merge-ours.sh as builtin
+ *
+ * Copyright (c) 2007 Thomas Harning Jr
+ * Original:
+ * Original Copyright (c) 2005 Junio C Hamano
+ *
+ * Pretend we resolved the heads, but declare our tree trumps everybody else.
+ */
+#include "git-compat-util.h"
+#include "builtin.h"
+
+static const char *diff_index_args[] = {
+       "diff-index", "--quiet", "--cached", "HEAD", "--", NULL
+};
+#define NARGS (ARRAY_SIZE(diff_index_args) - 1)
+
+int cmd_merge_ours(int argc, const char **argv, const char *prefix)
+{
+       /*
+        * We need to exit with 2 if the index does not match our HEAD tree,
+        * because the current index is what we will be committing as the
+        * merge result.
+        */
+       if (cmd_diff_index(NARGS, diff_index_args, prefix))
+               exit(2);
+       exit(0);
+}

diff --git a/builtin.h b/builtin.h
index 9a6213af126212dc131133cc2e9bf8b8d7a34557..bcb54aaded9707bf7b0d77456f15728db8b4b8ee 100644 (file)
--- a/builtin.h
+++ b/builtin.h
@@ -51,6 +51,7 @@ extern int cmd_ls_tree(int argc, const char **argv, const char *prefix);
 extern int cmd_mailinfo(int argc, const char **argv, const char *prefix);
 extern int cmd_mailsplit(int argc, const char **argv, const char *prefix);
 extern int cmd_merge_base(int argc, const char **argv, const char *prefix);
+extern int cmd_merge_ours(int argc, const char **argv, const char *prefix);
 extern int cmd_merge_file(int argc, const char **argv, const char *prefix);
 extern int cmd_mv(int argc, const char **argv, const char *prefix);
 extern int cmd_name_rev(int argc, const char **argv, const char *prefix);

diff --git a/git-merge-ours.sh b/contrib/examples/git-merge-ours.sh
similarity index 100%
rename from git-merge-ours.sh
rename to contrib/examples/git-merge-ours.sh

diff --git a/git.c b/git.c
index 7604319b5a9e8c12b2f00b4d5e6480445e02daa6..80c2f14a8b805008fc822e9483d2277e69bdcbe3 100644 (file)
--- a/git.c
+++ b/git.c
@@ -325,6 +325,7 @@ static void handle_internal_command(int argc, const char **argv)
                { "mailsplit", cmd_mailsplit },
                { "merge-base", cmd_merge_base, RUN_SETUP },
                { "merge-file", cmd_merge_file },
+               { "merge-ours", cmd_merge_ours, RUN_SETUP },
                { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
                { "name-rev", cmd_name_rev, RUN_SETUP },
                { "pack-objects", cmd_pack_objects, RUN_SETUP },