List the git branch of repositories in sub-directory

g-list-branch.sh

#!/bin/bash
# 
# 'g-list-branch' -> "git list branch(es)"
#
# iterate through subfolders of the current directory and 
# list the current branch they are in - useful to find work
# that was forgotten and turn them into a PR
#
# if the current folder is a git repo, just list the branch for
# this repo and quit, do not proceed to list subfolders
#
# CAH 2023-08-07
#


parent_folder=$(pwd)


# is the current folder a git repo?  If so, list the branch and quit
git diff --exit-code > /dev/null 2>&1
retVal=$?
if [[ "$retVal" -eq 0 ]]; then
    git rev-parse --abbrev-ref HEAD
    exit 0
fi


# determine the lenght of the longest directory name, just to make presentation prettier:
max_length=0
for repo in */
do
    len=${#repo}
    if (( len > max_length )); then
        max_length=$len
    fi
done

# iterate over the subdirectories of the current directory
for repo in */
do
    cd "$parent_folder"
    cd "$repo"

    git diff --exit-code > /dev/null 2>&1
    retVal=$?

    if [[ "$retVal" -eq 0 ]] || [[ "$retVal" -eq 1 ]]; then
        branch="$(git rev-parse --abbrev-ref HEAD)"
        printf "\e[1;34m%-${max_length}s\e[0m    %s\n" "$repo" "$branch"
    fi

done

cd "$parent_folder"