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require 'open3'
module Cliver
class ShellCapture
attr_reader :stdout, :stderr, :command_found
# @overlaod initialize(command)
# @param command [String] the command to run
# @overload initialize(command)
# @param command [Array<String>] the command to run; elements in
# the supplied array will be shelljoined.
# @return [void]
def initialize(command)
command = command.shelljoin if command.kind_of?(Array)
@stdout = @stderr = ''
begin
Open3.popen3(command) do |i, o, e|
@stdout = o.read.chomp
@stderr = e.read.chomp
end
# Fix for ruby 1.8.7 (and probably earlier):
# Open3.popen3 does not raise anything there, but the error goes to STDERR.
if @stderr =~ /open3.rb:\d+:in `exec': No such file or directory -.*\(Errno::ENOENT\)/ or
@stderr =~ /An exception occurred in a forked block\W+No such file or directory.*\(Errno::ENOENT\)/
@stderr = ''
@command_found = false
else
@command_found = true
end
rescue Errno::ENOENT, IOError
@command_found = false
end
end
end
end
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