diff --git a/modules/archive.sh b/modules/archive.sh new file mode 100755 index 0000000..593b2ee --- /dev/null +++ b/modules/archive.sh @@ -0,0 +1,60 @@ +#!/bin/bash + +archive_dir="$(dirname "$0")/../archives" + +input_file="${1}" +archive_pwd="${2}" +size="$3" + +check_dependencies() { + if ! mkdir -p "$archive_dir"; then + echo "ERROR: Unable to create archive directory" + exit 1 + fi + + if ! command -v 7z 2>&1 >/dev/null; then + echo "ERROR: 7z must be installed" + exit 1 + fi +} + +check_input() { + if [[ ! -e "${input_file}" ]]; then + echo "ERROR: Input file '${input_file}' does not exist" + exit 2 + fi + + echo "Archiving file/directory '${input_file}'" >&2 +} + +set_volumes() { + volumes= + + if [[ "$size" =~ ^[1-9][0-9]*$ ]]; then + volumes="-v${size}m" + elif [[ -n "$size" ]]; then + echo "Invalid size $size, must be a number" + exit 2 + fi + + echo "Volumes set to '$volumes'" >&2 +} + +generate_name() { + archive="$archive_dir/$(base64 /dev/urandom | tr -dc [:alnum:] | head -c 20).7z" + + echo "Generated archive name $archive" >&2 +} + +create_archive() { + echo "Packing ${input_file} into archive $archive with password ${archive_pwd}" + [[ -n "$volumes" ]] && echo "and volumes of size $size MB" + + 7z a -mhe=on "-p${archive_pwd}" "$volumes" "$archive" "${input_file}" >&2 +} + +check_dependencies +check_input +set_volumes +generate_name +create_archive