class Sass::Exec::SassScss

def colon_path?(path)
  !split_colon_path(path)[1].nil?
end

def common_options(opts)
  opts.separator ''
  opts.separator 'Common Options:'
  opts.on('-I', '--load-path PATH', 'Specify a Sass import path.') do |path|
    (@options[:for_engine][:load_paths] ||= []) << path
  end
  opts.on('-r', '--require LIB', 'Require a Ruby library before running Sass.') do |lib|
    require lib
  end
  opts.on('--compass', 'Make Compass imports available and load project configuration.') do
    @options[:compass] = true
  end
  opts.on('-t', '--style NAME', 'Output style. Can be nested (default), compact, ' \
                                'compressed, or expanded.') do |name|
    @options[:for_engine][:style] = name.to_sym
  end
  opts.on("-?", "-h", "--help", "Show this help message.") do
    puts opts
    exit
  end
  opts.on("-v", "--version", "Print the Sass version.") do
    puts("Sass #{Sass.version[:string]}")
    exit
  end
end

def default_sass_path
  return unless ENV['SASS_PATH']
  # The select here prevents errors when the environment's
  # load paths specified do not exist.
  ENV['SASS_PATH'].split(File::PATH_SEPARATOR).select {|d| File.directory?(d)}
end

def initialize(args, default_syntax)
  super(args)
  @options[:sourcemap] = :auto
  @options[:for_engine] = {
    :load_paths => default_sass_path
  }
  @default_syntax = default_syntax
end

def input_and_output(opts)
  opts.separator ''
  opts.separator 'Input and Output:'
  if @default_syntax == :sass
    opts.on('--scss',
            'Use the CSS-superset SCSS syntax.') do
      @options[:for_engine][:syntax] = :scss
    end
  else
    opts.on('--sass',
            'Use the indented Sass syntax.') do
      @options[:for_engine][:syntax] = :sass
    end
  end
  # This is optional for backwards-compatibility with Sass 3.3, which didn't
  # enable sourcemaps by default and instead used "--sourcemap" to do so.
  opts.on(:OPTIONAL, '--sourcemap=TYPE',
      'How to link generated output to the source files.',
      '  auto (default): relative paths where possible, file URIs elsewhere',
      '  file: always absolute file URIs',
      '  inline: include the source text in the sourcemap',
      '  none: no sourcemaps') do |type|
    if type && !%w[auto file inline none].include?(type)
      $stderr.puts "Unknown sourcemap type #{type}.\n\n"
      $stderr.puts opts
      exit
    elsif type.nil?
      Sass::Util.sass_warn <<MESSAGE.rstrip
ECATION WARNING: Passing --sourcemap without a value is deprecated.
cemaps are now generated by default, so this flag has no effect.
AGE
    end
    @options[:sourcemap] = (type || :auto).to_sym
  end
  opts.on('-s', '--stdin', :NONE,
          'Read input from standard input instead of an input file.',
          'This is the default if no input file is specified.') do
    @options[:input] = $stdin
  end
  encoding_option(opts)
  opts.on('--unix-newlines', 'Use Unix-style newlines in written files.',
                             ('Always true on Unix.' unless Sass::Util.windows?)) do
    @options[:unix_newlines] = true if Sass::Util.windows?
  end
  opts.on('-g', '--debug-info',
          'Emit output that can be used by the FireSass Firebug plugin.') do
    @options[:for_engine][:debug_info] = true
  end
  opts.on('-l', '--line-numbers', '--line-comments',
          'Emit comments in the generated CSS indicating the corresponding source line.') do
    @options[:for_engine][:line_numbers] = true
  end
end

def interactive
  require 'sass/repl'
  Sass::Repl.new(@options).run
end

def load_compass
  begin
    require 'compass'
  rescue LoadError
    require 'rubygems'
    begin
      require 'compass'
    rescue LoadError
      puts "ERROR: Cannot load compass."
      exit 1
    end
  end
  Compass.add_project_configuration
  Compass.configuration.project_path ||= Dir.pwd
  @options[:for_engine][:load_paths] ||= []
  @options[:for_engine][:load_paths] += Compass.configuration.sass_load_paths
end

def miscellaneous(opts)
  opts.separator ''
  opts.separator 'Miscellaneous:'
  opts.on('-i', '--interactive',
          'Run an interactive SassScript shell.') do
    @options[:interactive] = true
  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('--precision NUMBER_OF_DIGITS', Integer,
          "How many digits of precision to use when outputting decimal numbers.",
          "Defaults to #{Sass::Script::Value::Number.precision}.") do |precision|
    Sass::Script::Value::Number.precision = precision
  end
  opts.on('--cache-location PATH',
          'The path to save parsed Sass files. Defaults to .sass-cache.') do |loc|
    @options[:for_engine][:cache_location] = loc
  end
  opts.on('-C', '--no-cache', "Don't cache parsed Sass files.") do
    @options[:for_engine][:cache] = false
  end
  opts.on('--trace', :NONE, 'Show a full Ruby stack trace on error.') do
    @options[:trace] = true
  end
  opts.on('-q', '--quiet', 'Silence warnings and status messages during compilation.') do
    @options[:for_engine][:quiet] = true
  end
end

def probably_dest_dir?(path)
  return false unless path
  return false if colon_path?(path)
  Sass::Util.glob(File.join(path, "*.s[ca]ss")).empty?
end

def process_result
  require 'sass'
  if !@options[:update] && !@options[:watch] &&
      @args.first && colon_path?(@args.first)
    if @args.size == 1
      @args = split_colon_path(@args.first)
    else
      @options[:update] = true
    end
  end
  load_compass if @options[:compass]
  return interactive if @options[:interactive]
  return watch_or_update if @options[:watch] || @options[:update]
  super
  if @options[:sourcemap] != :none && @options[:output_filename]
    @options[:sourcemap_filename] = Sass::Util.sourcemap_name(@options[:output_filename])
  end
  @options[:for_engine][:filename] = @options[:filename]
  @options[:for_engine][:css_filename] = @options[:output] if @options[:output].is_a?(String)
  @options[:for_engine][:sourcemap_filename] = @options[:sourcemap_filename]
  @options[:for_engine][:sourcemap] = @options[:sourcemap]
  run
end

def run
  input = @options[:input]
  output = @options[:output]
  @options[:for_engine][:syntax] ||= :scss if input.is_a?(File) && input.path =~ /\.scss$/
  @options[:for_engine][:syntax] ||= @default_syntax
  engine =
    if input.is_a?(File) && !@options[:check_syntax]
      Sass::Engine.for_file(input.path, @options[:for_engine])
    else
      # We don't need to do any special handling of @options[:check_syntax] here,
      # because the Sass syntax checking happens alongside evaluation
      # and evaluation doesn't actually evaluate any code anyway.
      Sass::Engine.new(input.read, @options[:for_engine])
    end
  input.close if input.is_a?(File)
  if @options[:sourcemap] != :none && @options[:sourcemap_filename]
    relative_sourcemap_path = Sass::Util.relative_path_from(
      @options[:sourcemap_filename], Sass::Util.pathname(@options[:output_filename]).dirname)
    rendered, mapping = engine.render_with_sourcemap(relative_sourcemap_path.to_s)
    write_output(rendered, output)
    write_output(mapping.to_json(
        :type => @options[:sourcemap],
        :css_path => @options[:output_filename],
        :sourcemap_path => @options[:sourcemap_filename]) + "\n",
      @options[:sourcemap_filename])
  else
    write_output(engine.render, output)
  end
rescue Sass::SyntaxError => e
  write_output(Sass::SyntaxError.exception_to_css(e), output) if output.is_a?(String)
  raise e if @options[:trace]
  raise e.sass_backtrace_str("standard input")
ensure
  output.close if output.is_a? File
end

def set_opts(opts)
  opts.banner = <<END
e: #{default_syntax} [options] [INPUT] [OUTPUT]
ription:
nverts SCSS or Sass files to CSS.
  common_options(opts)
  watching_and_updating(opts)
  input_and_output(opts)
  miscellaneous(opts)
end

def split_colon_path(path)
  one, two = path.split(':', 2)
  if one && two && Sass::Util.windows? &&
      one =~ /\A[A-Za-z]\Z/ && two =~ /\A[\/\\]/
    # If we're on Windows and we were passed a drive letter path,
    # don't split on that colon.
    one2, two = two.split(':', 2)
    one = one + ':' + one2
  end
  return one, two
end

def watch_or_update
  require 'sass/plugin'
  Sass::Plugin.options.merge! @options[:for_engine]
  Sass::Plugin.options[:unix_newlines] = @options[:unix_newlines]
  Sass::Plugin.options[:poll] = @options[:poll]
  Sass::Plugin.options[:sourcemap] = @options[:sourcemap]
  if @options[:force]
    raise "The --force flag may only be used with --update." unless @options[:update]
    Sass::Plugin.options[:always_update] = true
  end
  raise <<MSG if @args.empty?
 files should I watch? Did you mean something like:
#{@default_syntax} --watch input.#{@default_syntax}:output.css
#{@default_syntax} --watch input-dir:output-dir
  if !colon_path?(@args[0]) && probably_dest_dir?(@args[1])
    flag = @options[:update] ? "--update" : "--watch"
    err =
      if !File.exist?(@args[1])
        "doesn't exist"
      elsif @args[1] =~ /\.css$/
        "is a CSS file"
      end
    raise <<MSG if err
 #{@args[1]} #{err}.
Did you mean: #{@default_syntax} #{flag} #{@args[0]}:#{@args[1]}
  end
  dirs, files = @args.map {|name| split_colon_path(name)}.
    partition {|i, _| File.directory? i}
  files.map! do |from, to|
    to ||= from.gsub(/\.[^.]*?$/, '.css')
    sourcemap = Sass::Util.sourcemap_name(to) if @options[:sourcemap]
    [from, to, sourcemap]
  end
  dirs.map! {|from, to| [from, to || from]}
  Sass::Plugin.options[:template_location] = dirs
  Sass::Plugin.on_updated_stylesheet do |_, css, sourcemap|
    [css, sourcemap].each do |file|
      next unless file
      puts_action :write, :green, file
    end
  end
  had_error = false
  Sass::Plugin.on_creating_directory {|dirname| puts_action :directory, :green, dirname}
  Sass::Plugin.on_deleting_css {|filename| puts_action :delete, :yellow, filename}
  Sass::Plugin.on_deleting_sourcemap {|filename| puts_action :delete, :yellow, filename}
  Sass::Plugin.on_compilation_error do |error, _, _|
    if error.is_a?(SystemCallError) && !@options[:stop_on_error]
      had_error = true
      puts_action :error, :red, error.message
      STDOUT.flush
      next
    end
    raise error unless error.is_a?(Sass::SyntaxError) && !@options[:stop_on_error]
    had_error = true
    puts_action :error, :red,
      "#{error.sass_filename} (Line #{error.sass_line}: #{error.message})"
    STDOUT.flush
  end
  if @options[:update]
    Sass::Plugin.update_stylesheets(files)
    exit 1 if had_error
    return
  end
  puts ">>> Sass is watching for changes. Press Ctrl-C to stop."
  Sass::Plugin.on_template_modified do |template|
    puts ">>> Change detected to: #{template}"
    STDOUT.flush
  end
  Sass::Plugin.on_template_created do |template|
    puts ">>> New template detected: #{template}"
    STDOUT.flush
  end
  Sass::Plugin.on_template_deleted do |template|
    puts ">>> Deleted template detected: #{template}"
    STDOUT.flush
  end
  Sass::Plugin.watch(files)
end

def watching_and_updating(opts)
  opts.separator ''
  opts.separator 'Watching and Updating:'
  opts.on('--watch', 'Watch files or directories for changes.',
                     'The location of the generated CSS can be set using a colon:',
                     "  #{@default_syntax} --watch input.#{@default_syntax}:output.css",
                     "  #{@default_syntax} --watch input-dir:output-dir") do
    @options[:watch] = true
  end
  # Polling is used by default on Windows.
  unless Sass::Util.windows?
    opts.on('--poll', 'Check for file changes manually, rather than relying on the OS.',
                      'Only meaningful for --watch.') do
      @options[:poll] = true
    end
  end
  opts.on('--update', 'Compile files or directories to CSS.',
                      'Locations are set like --watch.') do
    @options[:update] = true
  end
  opts.on('-f', '--force', 'Recompile every Sass file, even if the CSS file is newer.',
                           'Only meaningful for --update.') do
    @options[:force] = true
  end
  opts.on('--stop-on-error', 'If a file fails to compile, exit immediately.',
                             'Only meaningful for --watch and --update.') do
    @options[:stop_on_error] = true
  end
end