rclonenv - Rclone with directory-level environment variable config files via wrapper script

rclonenv

#!/usr/bin/env bash
set -o errexit
set -o nounset
set -o pipefail

# Licenses: Public Domain, CC0, MIT

# For ZSH autocompletion add to .zshrc:
# compdef rclonenv=rclone

# Name of env file.
env_name='rclone.env'

# Sample rclone.env:
# RCLONE_CONFIG_EXAMPLE_TYPE=alias
# RCLONE_CONFIG_EXAMPLE_REMOTE=remote:subpath

# List env files from parent directories.
env_files=()
dir="${PWD}"
while [[ "${dir}" != '' ]]; do
	env_file="${dir}/${env_name}"
	if [[ -f "${env_file}" ]]; then
		env_files+=("${env_file}")
	fi
	dir="${dir%/*}"
done

# Process env files, high to low.
for ((i="${#env_files[@]}"; i-->0;)); do
	env_file="${env_files[$i]}"
	while IFS= read -r line; do
		# Trim carriage return character if present.
		if [[ "${line}" == *$'\r' ]]; then
			line="${line%?}"
		fi
		# Skip any empty and comment lines.
		if [[ -z "${line}" ]] || [[ "${line}" == '#'* ]]; then
			continue
		fi
		export "${line}"
	done < "${env_file}"
done

exec rclone "$@"