lib/lazylead/os.rb
# frozen_string_literal: true
# The MIT License
#
# Copyright (c) 2019-2022 Yurii Dubinka
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom
# the Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
# OR OTHER DEALINGS IN THE SOFTWARE.
module Lazylead
#
# Represents a native, operation system.
#
# Author:: Yurii Dubinka (yurii.dubinka@gmail.com)
# Copyright:: Copyright (c) 2019-2020 Yurii Dubinka
# License:: MIT
class OS
#
# Run OS-oriented command
# @param cmd
# The command could be a single string or array of strings.
# Examples Final command to OS
# run("ls") "ls" => stdout
# run("ls", "-lah") "ls -lah" => stdout
# run() N/A => ""
# run("ls", nil, "-lah") N/A => ""
# run("ls", "", "-lah") "ls -lah" => stdout
#
# @return stdout
# Please note, that this is not a raw stdout.
# The output will be modified by String#scrub! in order to avoid invalid byte sequence
# in UTF-8 (https://stackoverflow.com/a/24037885/6916890).
# @todo #/DEV Add support of multiline string literals, not just array of commands
def run(*cmd)
return "" if cmd.empty? || cmd.any?(&:nil?)
todo = cmd
todo = [cmd.first] if cmd.size == 1
`#{todo.join(" ")}`.scrub!
end
end
end