tg-files: list files changed by the topic branch

[topgit.git] / tg.sh

diff --git a/tg.sh b/tg.sh
index 8264a3b074f1d6bbded09e8110f1c07be475ffdd..f1b323b7cbe543994f373523ab2b84b814fd0adc 100644 (file)
--- a/tg.sh
+++ b/tg.sh
@@ -37,6 +37,55 @@ cat_file()
        esac
 }
 
+# get tree for the committed topic
+get_tree_()
+{
+       echo "$1"
+}
+
+# get tree for the base
+get_tree_b()
+{
+       echo "refs/top-bases/$1"
+}
+
+# get tree for the index
+get_tree_i()
+{
+       git write-tree
+}
+
+# get tree for the worktree
+get_tree_w()
+{
+       i_tree=$(git write-tree)
+       (
+               # the file for --index-output needs to sit next to the
+               # current index file
+               : ${GIT_INDEX_FILE:="$git_dir/index"}
+               TMP_INDEX="$(mktemp "${GIT_INDEX_FILE}-tg.XXXXXX")"
+               git read-tree -m $i_tree --index-output="$TMP_INDEX" &&
+               GIT_INDEX_FILE="$TMP_INDEX" &&
+               export GIT_INDEX_FILE &&
+               git diff --name-only -z HEAD |
+                       git update-index -z --add --remove --stdin &&
+               git write-tree &&
+               rm -f "$TMP_INDEX"
+       )
+}
+
+# pretty_tree NAME [-b | -i | -w]
+# Output tree ID of a cleaned-up tree without tg's artifacts.
+# NAME will be ignored for -i and -w, but needs to be present
+pretty_tree()
+{
+       name=$1
+       source=${2#?}
+       git ls-tree --full-tree "$(get_tree_$source "$name")" |
+               awk -F '        ' '$2 !~ /^.top/' |
+               git mktree
+}
+
 # setup_hook NAME
 setup_hook()
 {