update_sub_tree.sh

#!/bin/bash

#list_subtrees() {
##  git log | grep git-subtree-dir | tr -d ' ' | cut -d ":" -f2- | sort | uniq
#git log | grep git-subtree-dir | tr -d ' ' | cut -d ":" -f2- | sort | uniq | while read -r prefix; do
#  repo_url=$(git config -f .gitmodules --get submodule.$prefix.url)
#  branch=$(git config -f .gitmodules --get submodule.$prefix.branch)
#  echo "$prefix $repo_url $branch"
#done
#}
list_subtrees() {
  # List subtrees by looking for git-subtree-dir in the log and extracting prefixes
  git log | grep git-subtree-dir | tr -d ' ' | cut -d ":" -f2- | sort | uniq | while read -r prefix; do
    # Check if a submodule exists in .gitmodules for the current prefix
    repo_url=$(git config -f .gitmodules --get submodule.$prefix.url)
    branch=$(git config -f .gitmodules --get submodule.$prefix.branch)

    # If repo_url or branch are not set, try to extract them from the git-subtree information
    if [ -z "$repo_url" ] || [ -z "$branch" ]; then
      echo "Warning: No submodule information found for prefix: $prefix"
      echo "Skipping $prefix due to missing repo_url or branch"
      continue
    fi

    # Display the details for each subtree
    echo "$prefix $repo_url $branch"
  done
}
list_subtrees


## List all subtrees and update each one
#list_subtrees | while read -r line; do
#  # Extract the prefix and repository details
#  prefix=$(echo "$line" | awk '{print $1}')
#  repo_url=$(echo "$line" | awk '{print $2}')
#  branch=$(echo "$line" | awk '{print $3}')
#
#  # Pull updates for the current subtree
#  echo "Pulling updates for subtree at $prefix from $repo_url (branch: $branch)"
#  git subtree pull --prefix="$prefix" "$repo_url" "$branch"
#done


list_subtrees | while read -r line; do
  # Extract the prefix and repository details
  prefix=$(echo "$line" | cut -d ' ' -f1)
  repo_url=$(echo "$line" | cut -d ' ' -f2)
  branch=$(echo "$line" | cut -d ' ' -f3)

  # Check if repo_url and branch are not empty
  if [ -n "$repo_url" ] && [ -n "$branch" ]; then
    # Stash any modifications in the working tree
    git stash --include-untracked

    # Pull updates for the current subtree
    echo "Pulling updates for subtree at $prefix from $repo_url (branch: $branch)"
    git subtree pull --prefix="$prefix" "$repo_url" "$branch"

    # Apply stashed changes
    git stash pop
  else
    echo "Skipping subtree at $prefix due to missing repo_url or branch"
  fi
done