Pushing all submodules recursively

Question

I wrote the below script to push all the changes in the workspace, both in the submodules and the superproject. However, it sounds a little odd that, it is this complex to do what I want. Is there any better way, that I'm missing?

#!/bin/bash

if [ "$#" -ne 1 ]; then
    echo "Illegal number of parameters"
    exit
fi

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

cd "${SCRIPT_DIR}/../submodule1" 
git status
git add -A
git commit -m "$1"
git push origin master

cd "${SCRIPT_DIR}/../submodule2" 
git status
git add -A
git commit -m "$1"
git push origin master

cd "${SCRIPT_DIR}/../submodule3" 
git status
git add -A
git commit -m "$1"
git push origin master

printf "\n\nUpdating Super Project\n\n" 
cd .. 
git status
git add -A
git commit -m "All Submodules Updated - $1"
git push origin master

Answer 1

The git-powercommit script I wrote recently does push submodules recursively as a part of its workflow. Under the hood, there is a map-like iterator which uses git-status --porcelain=v2 to iterate over repository objects. Here is its definition:

mapchanges() {(
  set -e -x
  local filter="$1"
  local commiter="$2"
  git status --no-renames --porcelain=v2 | \
  while read N XY sub mH mI mW hH hI path ; do
    $filter $N $XY $sub $mH $mI $mW $hH $hI "$path"
  done | \
  sort -u --reverse | \
  while read path; do
    $commiter "$path"
  done
)}

In order to iterate over submodules, you need to provide it with the filter and the action callback functions. In your case, the filter function could be:

filter_subm() {
  # Inputs are according to `git status --porcelain=v2` spec. The function
  # filters submodules which has changed commits.
  local sub="$3"; shift 8; local path="$1"
  case "$sub" in
    SC??) echo "$path" ;;
    *) ;;
  esac
}

As for the action function, the origina script does commit the whole submodule, but in your case you could insert the push commands like the following

push_subm() {
  local path="$1"
  (cd -P "$path" && git push origin; )
}

Now, we bring everything together with the line like

mapchanges filter_subm push_subm

Please, consider reviewing the original script to find out the details on how to organize the recursion.