Class: Haml::Exec::Haml

Inherits:
Generic show all
Defined in:
lib/haml/exec.rb

Overview

The haml executable.

Constant Summary

Constants inherited from Generic

Generic::COLORS

Instance Method Summary collapse

Methods inherited from Generic

#color, #get_line, #parse, #parse!, #puts_action, #to_s

Constructor Details

#initialize(args) ⇒ Haml

Returns a new instance of Haml.

Parameters:

  • args (Array<String>) —

    The command-line arguments



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# File 'lib/haml/exec.rb', line 400

def initialize(args)
  super
  @options[:for_engine] = {}
  @options[:requires] = []
  @options[:load_paths] = []
end

Instance Method Details

#process_result

Processes the options set by the command-line arguments, and runs the Haml compiler appropriately.



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# File 'lib/haml/exec.rb', line 471

def process_result
  super
  @options[:for_engine][:filename] = @options[:filename]
  input = @options[:input]
  output = @options[:output]

  template = input.read()
  input.close() if input.is_a? File

  begin
    engine = ::Haml::Engine.new(template, @options[:for_engine])
    if @options[:check_syntax]
      puts "Syntax OK"
      return
    end

    @options[:load_paths].each {|p| $LOAD_PATH << p}
    @options[:requires].each {|f| require f}

    if @options[:debug]
      puts engine.precompiled
      puts '=' * 100
    end

    result = engine.to_html
  rescue Exception => e
    raise e if @options[:trace]

    case e
    when ::Haml::SyntaxError; raise "Syntax error on line #{get_line e}: #{e.message}"
    when ::Haml::Error;       raise "Haml error on line #{get_line e}: #{e.message}"
    else raise "Exception on line #{get_line e}: #{e.message}\n  Use --trace for backtrace."
    end
  end

  output.write(result)
  output.close() if output.is_a? File
end

#set_opts(opts)

Tells optparse how to parse the arguments.

Parameters:

  • opts (OptionParser) 


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# File 'lib/haml/exec.rb', line 410

def set_opts(opts)
  super

  opts.banner = <<END
Usage: haml [options] [INPUT] [OUTPUT]

Description:
  Converts Haml files to HTML.

Options:
END

  opts.on('-c', '--check', "Just check syntax, don't evaluate.") do
    require 'stringio'
    @options[:check_syntax] = true
    @options[:output] = StringIO.new
  end

  opts.on('-t', '--style NAME',
          'Output style. Can be indented (default) or ugly.') do |name|
    @options[:for_engine][:ugly] = true if name.to_sym == :ugly
  end

  opts.on('-f', '--format NAME',
          'Output format. Can be xhtml (default), html4, or html5.') do |name|
    @options[:for_engine][:format] = name.to_sym
  end

  opts.on('-e', '--escape-html',
          'Escape HTML characters (like ampersands and angle brackets) by default.') do
    @options[:for_engine][:escape_html] = true
  end

  opts.on('-q', '--double-quote-attributes',
          'Set attribute wrapper to double-quotes (default is single).') do
    @options[:for_engine][:attr_wrapper] = '"'
  end

  opts.on('-r', '--require FILE', "Same as 'ruby -r'.") do |file|
    @options[:requires] << file
  end

  opts.on('-I', '--load-path PATH', "Same as 'ruby -I'.") do |path|
    @options[:load_paths] << path
  end

  unless ::Haml::Util.ruby1_8?
    opts.on('-E ex[:in]', 'Specify the default external and internal character encodings.') do |encoding|
      external, internal = encoding.split(':')
      Encoding.default_external = external if external && !external.empty?
      Encoding.default_internal = internal if internal && !internal.empty?
    end
  end

  opts.on('--debug', "Print out the precompiled Ruby source.") do
    @options[:debug] = true
  end
end