Parent

Object

Class/Module Index [+]

Quicksearch

Closure::Compiler

The Closure::Compiler is a basic wrapper around the actual JAR. There's not much to see here.

Constants

DEFAULT_OPTIONS

Public Class Methods

new(options={}) click to toggle source

When you create a Compiler, pass in the flags and options.

# File lib/closure/compiler.rb, line 19
def initialize(options={})
  @java     = options.delete(:java)     || JAVA_COMMAND
  @jar      = options.delete(:jar_file) || COMPILER_JAR
  @options  = DEFAULT_OPTIONS.merge(options)
end

Public Instance Methods

compile(io) click to toggle source

Can compile a JavaScript string or open IO object. Returns the compiled JavaScript as a string or yields an IO object containing the response to a block, for streaming.

# File lib/closure/compiler.rb, line 28
def compile(io)
  tempfile = Tempfile.new('closure_compiler')
  if io.respond_to? :read
    while buffer = io.read(4096) do
      tempfile.write(buffer)
    end
  else
    tempfile.write(io.to_s)
  end
  tempfile.flush

  begin
    result = compile_files(tempfile.path)
  rescue Exception => e
    raise e
  ensure
    tempfile.close!
  end

  yield(StringIO.new(result)) if block_given?
  result
end
Also aliased as: compress
compile_file(files) click to toggle source
Alias for: compile_files
compile_files(files) click to toggle source

Takes an array of javascript file paths or a single path. Returns the resulting JavaScript as a string or yields an IO object containing the response to a block, for streaming.

# File lib/closure/compiler.rb, line 55
def compile_files(files)
  @options.merge!(:js => files)

  begin
    result = `#{command} 2>&1`
  rescue Exception
    raise Error, "compression failed: #{result}"
  end

  unless $?.exitstatus.zero?
    raise Error, result
  end

  yield(StringIO.new(result)) if block_given?
  result
end
Also aliased as: compile_file
compress(io) click to toggle source
Alias for: compile

Private Instance Methods

command() click to toggle source 
# File lib/closure/compiler.rb, line 86
def command
  [@java, '-jar', "\"#{@jar}\"", serialize_options(@options)].flatten.join(' ')
end
serialize_options(options) click to toggle source

Serialize hash options to the command-line format.

# File lib/closure/compiler.rb, line 76
def serialize_options(options)
  options.map do |k, v|
    if (v.is_a?(Array))
      v.map {|v2| ["--#{k}", v2.to_s]}
    else
      ["--#{k}", v.to_s]
    end
  end.flatten
end

[Validate]

Generated with the Darkfish Rdoc Generator 2.