From: Matt Hoffman <matt.hoffman@xxxxxxxxxxxxxxxxx>
Fetches the remote repo as a temporary git-remote then uses
git-diff-tree to do comparison before removing the temporary
git-remote.
Signed-off-by: Paul Campbell <pcampbell@xxxxxxxxxxx>
Conflicts:
git-subtree.sh
---
contrib/subtree/git-subtree.sh | 34 +++++++++++++++++++++++++++++++++-
1 file changed, 33 insertions(+), 1 deletion(-)
diff --git a/contrib/subtree/git-subtree.sh b/contrib/subtree/git-subtree.sh
index ae9f87f..4c3f3c0 100755
--- a/contrib/subtree/git-subtree.sh
+++ b/contrib/subtree/git-subtree.sh
@@ -16,6 +16,7 @@ git subtree pull-all
git subtree push-all
git subtree push --prefix=<prefix> <repository> <refspec...>
git subtree split --prefix=<prefix> <commit...>
+git subtree diff --prefix=<prefix> [<repository> [<refspec>...]]
git subtree from-submodule --prefix=<prefix>
--
h,help show the help
@@ -105,8 +106,8 @@ command="$1"
shift
case "$command" in
add|merge|pull|from-submodule|pull-all|push-all) default= ;;
- split|push) default="--default HEAD" ;;
*) die "Unknown command '$command'" ;;
+ split|push|diff) default="--default HEAD" ;;
esac
if [ -z "$prefix" -a "$command" != "pull-all" -a "$command" != "push-all" ]; then
@@ -737,6 +738,37 @@ cmd_pull()
fi
}
+cmd_diff()
+{
+ if [ -e "$dir" ]; then
+ if [ $# -eq 1 ]; then
+ repository=$(git config -f .gittrees subtree.$prefix.url)
+ refspec=$1
+ elif [ $# -eq 2 ]; then
+ repository=$1
+ refspec=$2
+ else
+ repository=$(git config -f .gittrees subtree.$prefix.url)
+ refspec=$(git config -f .gittrees subtree.$prefix.branch)
+ fi
+ # this is ugly, but I don't know of a better way to do it. My git-fu is weak.
+ # git diff-tree expects a treeish, but I have only a repository and branch name.
+ # I don't know how to turn that into a treeish without creating a remote.
+ # Please change this if you know a better way!
+ tmp_remote=__diff-tmp
+ git remote rm $tmp_remote > /dev/null 2>&1
+ git remote add -t $refspec $tmp_remote $repository > /dev/null
+ # we fetch as a separate step so we can pass -q (quiet), which isn't an option for "git remote"
+ # could this instead be "git fetch -q $repository $refspec" and leave aside creating the remote?
+ # Still need a treeish for the diff-tree command...
+ git fetch -q $tmp_remote
+ git diff-tree -p refs/remotes/$tmp_remote/$refspec
+ git remote rm $tmp_remote > /dev/null 2>&1
+ else
+ die "Cannot resolve directory '$dir'. Please point to an existing subtree directory to diff. Try 'git subtree add' to add a subtree."
+ fi
+}
+
cmd_push()
{
if [ $# -gt 2 ]; then
--
1.8.2.rc1
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