git-p4: map a P4 user to Git author name and email address

diff --git a/contrib/subtree/git-subtree.sh b/contrib/subtree/git-subtree.sh
index 7d7af03274ee0759c9e915a6ea7b52ecce65cf55..5c8372709b31b4ecd8caf0e05faedd0626f03021 100755 (executable)
--- a/contrib/subtree/git-subtree.sh
+++ b/contrib/subtree/git-subtree.sh
@@ -9,10 +9,10 @@ if [ $# -eq 0 ]; then
 fi
 OPTS_SPEC="\
 git subtree add   --prefix=<prefix> <commit>
-git subtree add   --prefix=<prefix> <repository> <commit>
+git subtree add   --prefix=<prefix> <repository> <ref>
 git subtree merge --prefix=<prefix> <commit>
-git subtree pull  --prefix=<prefix> <repository> <refspec...>
-git subtree push  --prefix=<prefix> <repository> <refspec...>
+git subtree pull  --prefix=<prefix> <repository> <ref>
+git subtree push  --prefix=<prefix> <repository> <ref>
 git subtree split --prefix=<prefix> <commit...>
 --
 h,help        show the help
@@ -26,7 +26,7 @@ b,branch=     create a new branch from the split subtree
 ignore-joins  ignore prior --rejoin commits
 onto=         try connecting new tree to an existing one
 rejoin        merge the new branch back into HEAD
- options for 'add', 'merge', 'pull' and 'push'
+ options for 'add', 'merge', and 'pull'
 squash        merge subtree changes as a single commit
 "
 eval "$(echo "$OPTS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?)"
@@ -46,18 +46,26 @@ ignore_joins=
 annotate=
 squash=
 message=
+prefix=
 
 debug()
 {
        if [ -n "$debug" ]; then
-               echo "$@" >&2
+               printf "%s\n" "$*" >&2
        fi
 }
 
 say()
 {
        if [ -z "$quiet" ]; then
-               echo "$@" >&2
+               printf "%s\n" "$*" >&2
+       fi
+}
+
+progress()
+{
+       if [ -z "$quiet" ]; then
+               printf "%s\r" "$*" >&2
        fi
 }
 
@@ -82,7 +90,7 @@ while [ $# -gt 0 ]; do
                --annotate) annotate="$1"; shift ;;
                --no-annotate) annotate= ;;
                -b) branch="$1"; shift ;;
-               -P) prefix="$1"; shift ;;
+               -P) prefix="${1%/}"; shift ;;
                -m) message="$1"; shift ;;
                --no-prefix) prefix= ;;
                --onto) onto="$1"; shift ;;
@@ -297,7 +305,7 @@ copy_commit()
        # We're going to set some environment vars here, so
        # do it in a subshell to get rid of them safely later
        debug copy_commit "{$1}" "{$2}" "{$3}"
-       git log -1 --pretty=format:'%an%n%ae%n%ad%n%cn%n%ce%n%cd%n%B' "$1" |
+       git log -1 --pretty=format:'%an%n%ae%n%aD%n%cn%n%ce%n%cD%n%B' "$1" |
        (
                read GIT_AUTHOR_NAME
                read GIT_AUTHOR_EMAIL
@@ -471,8 +479,16 @@ copy_or_skip()
                        p="$p -p $parent"
                fi
        done
-       
-       if [ -n "$identical" ]; then
+
+       copycommit=
+       if [ -n "$identical" ] && [ -n "$nonidentical" ]; then
+               extras=$(git rev-list --count $identical..$nonidentical)
+               if [ "$extras" -ne 0 ]; then
+                       # we need to preserve history along the other branch
+                       copycommit=1
+               fi
+       fi
+       if [ -n "$identical" ] && [ -z "$copycommit" ]; then
                echo $identical
        else
                copy_commit $rev $tree "$p" || exit $?
@@ -489,6 +505,12 @@ ensure_clean()
        fi
 }
 
+ensure_valid_ref_format()
+{
+       git check-ref-format "refs/heads/$1" ||
+           die "'$1' does not look like a ref"
+}
+
 cmd_add()
 {
        if [ -e "$dir" ]; then
@@ -508,8 +530,7 @@ cmd_add()
            # specified directory.  Allowing a refspec might be
            # misleading because we won't do anything with any other
            # branches fetched via the refspec.
-           git rev-parse -q --verify "$2^{commit}" >/dev/null ||
-           die "'$2' does not refer to a commit"
+           ensure_valid_ref_format "$2"
 
            "cmd_add_repository" "$@"
        else
@@ -552,8 +573,9 @@ cmd_add_commit()
                commit=$(add_squashed_msg "$rev" "$dir" |
                         git commit-tree $tree $headp -p "$rev") || exit $?
        else
+               revp=$(peel_committish "$rev") &&
                commit=$(add_msg "$dir" "$headrev" "$rev" |
-                        git commit-tree $tree $headp -p "$rev") || exit $?
+                        git commit-tree $tree $headp -p "$revp") || exit $?
        fi
        git reset "$commit" || exit $?
        
@@ -592,7 +614,7 @@ cmd_split()
        eval "$grl" |
        while read rev parents; do
                revcount=$(($revcount + 1))
-               say -n "$revcount/$revmax ($createcount)\r"
+               progress "$revcount/$revmax ($createcount)"
                debug "Processing commit: $rev"
                exists=$(cache_get $rev)
                if [ -n "$exists" ]; then
@@ -634,7 +656,7 @@ cmd_split()
                debug "Merging split branch into HEAD..."
                latest_old=$(cache_get latest_old)
                git merge -s ours \
-                       -m "$(rejoin_msg $dir $latest_old $latest_new)" \
+                       -m "$(rejoin_msg "$dir" $latest_old $latest_new)" \
                        $latest_new >&2 || exit $?
        fi
        if [ -n "$branch" ]; then
@@ -699,7 +721,11 @@ cmd_merge()
 
 cmd_pull()
 {
+       if [ $# -ne 2 ]; then
+           die "You must provide <repository> <ref>"
+       fi
        ensure_clean
+       ensure_valid_ref_format "$2"
        git fetch "$@" || exit $?
        revs=FETCH_HEAD
        set -- $revs
@@ -709,14 +735,15 @@ cmd_pull()
 cmd_push()
 {
        if [ $# -ne 2 ]; then
-           die "You must provide <repository> <refspec>"
+           die "You must provide <repository> <ref>"
        fi
+       ensure_valid_ref_format "$2"
        if [ -e "$dir" ]; then
            repository=$1
            refspec=$2
            echo "git push using: " $repository $refspec
            localrev=$(git subtree split --prefix="$prefix") || die
-           git push $repository $localrev:refs/heads/$refspec
+           git push "$repository" $localrev:refs/heads/$refspec
        else
            die "'$dir' must already exist. Try 'git subtree add'."
        fi