ggdep

#!/bin/bash

usage () {
  cat <<-EOF
Usage: ${0##*/} (<command> [<args>...] | -h | --help)

Manage external golang dependencies.

Options:
  -h, --help        Show this help message.

Commands:
  list [<package>]  List external dependencies of package.
  save              Add external dependency as git submodule in ./vendor
                    directory.
EOF
}



deps () {
  go list -f '{{join .Imports "\n"}}' $1 \
    | xargs go list -f '{{if not .Standard}}{{.ImportPath}}{{end}}';
}

save () {
  for dep in $(deps); do
    read -r -p "Add vendor $dep? [y/N] " response
    response=$(echo $response | awk '{print tolower($0)}')
    if [[ $response =~ ^(yes|y)$ ]]; then
      git submodule add https://$dep vendor/$dep
    fi
  done
}
case $1 in
  save) save;;
  list) deps $2;;
  -h|--help) usage && exit 0;;
  *) usage && exit 1;;
esac