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Versions: 7
Compression:
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Contents
module Opal
module Util
extend self
# Used for uglifying source to minify
def uglify(str)
uglifyjs = DigestSourceCommand.new(:uglifyjs, nil, ' (install with: "npm install -g uglify-js")')
uglifyjs.digest(str)
end
# Gzip code to check file size
def gzip(str)
gzip = DigestSourceCommand.new(:gzip, '-f', ', it is required to produce the .gz version')
gzip.digest(str)
end
class Command
def initialize(command, options, message = nil)
@command, @options, @message = command, options, message
return unless command_installed? command, message
end
attr_reader :command, :options, :message
private
def hide_stderr
if (/mswin|mingw/ =~ RUBY_PLATFORM).nil?
'2> /dev/null'
else
'2> nul'
end
end
# Code from http://stackoverflow.com/questions/2108727/which-in-ruby-checking-if-program-exists-in-path-from-ruby
def which(cmd)
exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : ['']
ENV['PATH'].split(File::PATH_SEPARATOR).find do |path|
exts.find { |ext|
exe = File.join(path, "#{cmd}#{ext}")
exe if File.executable? exe
}
end
end
INSTALLED = {}
def command_installed?(cmd, install_comment)
command_installed = Command::INSTALLED[cmd.to_s] ||= which(cmd)
$stderr.puts %Q("#{cmd}" command not found#{install_comment}) unless command_installed
command_installed
end
end
class DigestSourceCommand < Command
def digest(source)
IO.popen("#{command} #{options} #{hide_stderr}", 'r+') do |i|
i.puts source
i.close_write
i.read
end
end
end
end
end
Version data entries
7 entries across 7 versions & 2 rubygems