mirror of
https://github.com/jashkenas/coffeescript.git
synced 2022-11-09 12:23:24 -05:00
107 lines
2.7 KiB
Ruby
107 lines
2.7 KiB
Ruby
require 'optparse'
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require 'fileutils'
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require 'open3'
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require File.expand_path(File.dirname(__FILE__) + '/../coffee-script')
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module CoffeeScript
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class CommandLine
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BANNER = <<-EOS
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coffee-script compiles CoffeeScript files into JavaScript.
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Usage:
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coffee-script path/to/script.cs
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EOS
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def initialize
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parse_options
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check_sources
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compile_javascript
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end
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def usage
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puts "\n#{@option_parser}\n"
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exit
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end
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private
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def compile_javascript
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@sources.each do |source|
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next tokens(source) if @options[:tokens]
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contents = CoffeeScript.compile(File.open(source))
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next puts(contents) if @options[:print]
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next lint(contents) if @options[:lint]
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File.open(path_for(source), 'w+') {|f| f.write(contents) }
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end
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end
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def check_sources
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usage if @sources.empty?
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missing = @sources.detect {|s| !File.exists?(s) }
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if missing
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STDERR.puts("File not found: '#{missing}'")
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exit(1)
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end
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end
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# Pipe compiled JS through JSLint.
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def lint(js)
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stdin, stdout, stderr = Open3.popen3('jsl -nologo -stdin')
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stdin.write(js)
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stdin.close
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print stdout.read
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stdout.close and stderr.close
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end
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def tokens(source)
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puts Lexer.new.tokenize(File.read(source)).inspect
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end
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# Write out JavaScript alongside CoffeeScript unless an output directory
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# is specified.
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def path_for(source)
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filename = File.basename(source, File.extname(source)) + '.js'
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dir = @options[:output] || File.dirname(source)
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File.join(dir, filename)
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end
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def parse_options
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@options = {}
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@option_parser = OptionParser.new do |opts|
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opts.on('-o', '--output [DIR]', 'set the directory for compiled javascript') do |d|
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@options[:output] = d
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FileUtils.mkdir_p(d) unless File.exists?(d)
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end
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opts.on('-p', '--print', 'print the compiled javascript to stdout') do |d|
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@options[:print] = true
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end
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opts.on('-l', '--lint', 'pipe the compiled javascript through JSLint') do |l|
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@options[:lint] = true
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end
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opts.on('-t', '--tokens', 'print the tokens that the lexer produces') do |t|
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@options[:tokens] = true
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end
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opts.on_tail('-v', '--version', 'display coffee-script version') do
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puts "coffee-script version #{CoffeeScript::VERSION}"
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exit
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end
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opts.on_tail('-h', '--help', 'display this help message') do
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usage
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end
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end
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@option_parser.banner = BANNER
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begin
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@option_parser.parse!(ARGV)
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rescue OptionParser::InvalidOption => e
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puts e.message
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exit(1)
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end
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@sources = ARGV
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end
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end
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end
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