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Contents
# frozen_string_literal: true
require "open3"
module Licensed
module Shell
# Executes a command, returning its standard output on success.
# On failure it raises an exception that contains the error output, unless
# `allow_failure` is true.
def self.execute(cmd, *args, allow_failure: false, env: {})
stdout, stderr, status = Open3.capture3(env, cmd, *args)
if status.success? || allow_failure
stdout.strip
else
raise Error.new([cmd, *args], status.exitstatus, stderr)
end
end
# Executes a command and returns a boolean value indicating if the command
# was succesful
def self.success?(cmd, *args)
_, _, status = Open3.capture3(cmd, *args)
status.success?
end
# Returns a boolean indicating whether a CLI tool is available in the
# current environment
def self.tool_available?(tool)
output, err, status = Open3.capture3("which", tool)
status.success? && !output.strip.empty? && err.strip.empty?
end
class Error < RuntimeError
attr_reader :cmd, :status, :stderr
def initialize(cmd, status, stderr)
super()
@cmd = cmd
@exitstatus = status
@stderr = stderr.to_s.strip
end
def message
extra = @stderr.empty?? "" : "#{@stderr.gsub(/^/, " ")}"
"'#{escape_cmd}' exited with status #{@exitstatus}\n#{extra}"
end
def escape_cmd
@cmd.map do |arg|
if arg =~ /[\s'"]/
escaped = arg.gsub(/([\\"])/, '\\\\\1')
%("#{escaped}")
else
arg
end
end.join(" ")
end
end
end
end
Version data entries
25 entries across 25 versions & 1 rubygems