Dev container utilities

copy_if_exists.sh

#!/bin/sh

# Script to copy a source file/directory to a destination with specified permissions and ownership
# Usage: ./copy_if_exists.sh source destination user:group dir_perms [file_perms]

copy_if_exists() {
  local source="$1"
  local target="$2"
  local owner="$3"
  local dir_perms="$4"
  local file_perms="${5:-}"

  if [ -f "$source" ]; then
    mkdir -p "$(dirname "$target")"
    cp "$source" "$target"
    chown "$owner" "$target"
    chmod "$dir_perms" "$target"

    if [ -n "$file_perms" ]; then
      chmod "$file_perms" "$target"
    fi

    echo "✅ Copied: $source → $target"
  elif [ -d "$source" ]; then
    mkdir -p "$(dirname "$target")"
    cp -rT "$source" "$target"
    chown -R "$owner" "$target"
    chmod "$dir_perms" "$target"

    echo "✅ Copied: $source → $target"
  else
    echo "⚠️ Not found or empty: $source"
  fi
}

# Main execution
if [ $# -lt 4 ] || [ $# -gt 5 ]; then
  echo "Usage: $0 source destination user:group dir_perms [file_perms]"
  exit 1
fi

copy_if_exists "$1" "$2" "$3" "$4" "$5"