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[PATCH] git-resolve-script: Add LAST_MERGE and use git-rev-parse
authorDan Holmsand <holmsand@gmail.com>
Mon, 20 Jun 2005 18:52:38 +0000 (20:52 +0200)
committerLinus Torvalds <torvalds@ppc970.osdl.org>
Mon, 20 Jun 2005 22:49:39 +0000 (15:49 -0700)
Make git-resolve-script only write MERGE_HEAD if a merge actually
occurred. All merge failures leave ORIG_HEAD and LAST_MERGE
behind (instead of ORIG_HEAD and MERGE_HEAD).

Use git-rev-parse to expand arguments (and check for bad ones).

Signed-off-by: Dan Holmsand <holmsand@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
git-resolve-script patch | blob | history

diff --git a/git-resolve-script b/git-resolve-script
index 007e29a2edd64c4f103397bd62b5c33f98ff8382..91b001b9a9afbcadcbacf886dd11821c2aeee1b2 100755 (executable)
--- a/git-resolve-script
+++ b/git-resolve-script
@@ -4,26 +4,31 @@
 #
 # Resolve two trees.
 #
-head="$1"
-merge="$2"
+head=$(git-rev-parse --revs-only "$1")
+merge=$(git-rev-parse --revs-only "$2")
 merge_repo="$3"
 
 : ${GIT_DIR=.git}
 : ${GIT_OBJECT_DIRECTORY="${SHA1_FILE_DIRECTORY-"$GIT_DIR/objects"}"}
 
-rm -f "$GIT_DIR"/MERGE_HEAD "$GIT_DIR"/ORIG_HEAD
-echo $head > "$GIT_DIR"/ORIG_HEAD
-echo $merge > "$GIT_DIR"/MERGE_HEAD
+dropheads() {
+       rm -f -- "$GIT_DIR/ORIG_HEAD" "$GIT_DIR/MERGE_HEAD" \
+               "$GIT_DIR/LAST_MERGE" || exit 1
+}
 
 #
 # The remote name is just used for the message,
 # but we do want it.
 #
-if [ "$merge_repo" == "" ]; then
+if [ -z "$head" -o -z "$merge" -o -z "$merge_repo" ]; then
        echo "git-resolve-script <head> <remote> <merge-repo-name>"
        exit 1
 fi
 
+dropheads
+echo $head > "$GIT_DIR"/ORIG_HEAD
+echo $merge > "$GIT_DIR"/LAST_MERGE
+
 common=$(git-merge-base $head $merge)
 if [ -z "$common" ]; then
        echo "Unable to find common commit between" $merge $head
@@ -32,7 +37,7 @@ fi
 
 if [ "$common" == "$merge" ]; then
        echo "Already up-to-date. Yeeah!"
-       rm -f -- "$GIT_DIR/ORIG_HEAD" "$GIT_DIR/MERGE_HEAD"
+       dropheads
        exit 0
 fi
 if [ "$common" == "$head" ]; then
@@ -40,7 +45,7 @@ if [ "$common" == "$head" ]; then
        git-read-tree -u -m $head $merge || exit 1
        echo $merge > "$GIT_DIR"/HEAD
        git-diff-tree -p ORIG_HEAD HEAD | git-apply --stat
-       rm -f -- "$GIT_DIR/ORIG_HEAD" "$GIT_DIR/MERGE_HEAD"
+       dropheads
        exit 0
 fi
 echo "Trying to merge $merge into $head"
@@ -51,6 +56,7 @@ if [ $? -ne 0 ]; then
        echo "Simple merge failed, trying Automatic merge"
        git-merge-cache -o git-merge-one-file-script -a
        if [ $? -ne 0 ]; then
+               echo $merge > "$GIT_DIR"/MERGE_HEAD
                echo "Automatic merge failed, fix up by hand"
                exit 1
        fi
@@ -60,4 +66,4 @@ result_commit=$(echo "$merge_msg" | git-commit-tree $result_tree -p $head -p $me
 echo "Committed merge $result_commit"
 echo $result_commit > "$GIT_DIR"/HEAD
 git-diff-tree -p $head $result_commit | git-apply --stat
-rm -f -- "$GIT_DIR/ORIG_HEAD" "$GIT_DIR/MERGE_HEAD"
+dropheads
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