Class: Closure::Compiler

Inherits:
Object
  • Object
show all
Defined in:
lib/closure/compiler.rb

Overview

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

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Compiler

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



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# File 'lib/closure/compiler.rb', line 15

def initialize(options={})
  @java     = options.delete(:java)     || JAVA_COMMAND
  @jar      = options.delete(:jar_file) || COMPILER_JAR
  @options  = serialize_options(options)
end

Instance Method Details

#compile(io) ⇒ Object Also known as: compress

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.

Raises:



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# File 'lib/closure/compiler.rb', line 24

def compile(io)
  result, error = nil, nil
  status = POpen4.popen4(*command) do |stdout, stderr, stdin, pid|
    if io.respond_to? :read
      while buffer = io.read(4096) do
        stdin.write(buffer)
      end
    else
      stdin.write(io.to_s)
    end
    stdin.close
    result = block_given? ? yield(stdout) : stdout.read
    error = stderr.read
  end
  raise Error, error unless status.success?
  result
end