# File lib/texy.rb, line 288
    def self.freeze_spaces(string)
        string.tr(" \t\r\n", "\x15\x16\x17\x18")
    end

# File lib/texy.rb, line 302
    def self.hash_opening?(hash)
        hash[1].chr == "\x1F"
    end

# File lib/texy.rb, line 104
    def initialize
        self.tab_width = 8
        self.allowed_classes = :all
        self.allowed_styles = :all
        self.allowed_tags = Texy::Html::VALID # full support for HTML tags
        self.obfuscate_email = true
        self.summary = {
            :images => [],
            :links => [],
            :preload => []
        }
        self.merge_lines = true

        @line_patterns = []
        @block_patterns = []

        @references = {}

        # load all modules
        load_modules
    end

# File lib/texy.rb, line 293
    def self.unfreeze_spaces(string)
        string.tr("\x15\x16\x17\x18", " \t\r\n")
    end

# File lib/texy.rb, line 298
    def self.wash(text)
        text.gsub(/[\x15-\x1F]+/, '')
    end

# File lib/texy.rb, line 309
    def add_reference(name, obj)
        name.downcase! # watch out for utf8!
        @references[name] = obj
    end

# File lib/texy.rb, line 89
    def obfuscate_email?
        @obfuscate_email
    end

# File lib/texy.rb, line 140
    def parse(source)
        # initialization
        init

        # process
        @dom = Texy::Dom.new(self)
        @dom.parse(source)
    end

# File lib/texy.rb, line 127
    def process(source, single_line = false)
        if single_line
            parse_line(source)
        else
            parse(source)
        end

        dom.to_html
    end

# File lib/texy.rb, line 315
    def reference(name)
        low_name = name.downcase # watch out for UTF8 !


        return @references[low_name] if @references[low_name]
        return reference_handler.call(name, self) if reference_handler

        false
    end

# File lib/texy.rb, line 234
    def register_block_pattern(handler, pattern)
        # raise ArgumentError, 'Not a block pattern: ' + pattern.source unless /(.)\^.*\$\\1[a-z]*/i =~ pattern

        @block_patterns << {
            :handler => handler,
            :pattern => pattern
        }
    end

# File lib/texy.rb, line 220
    def register_line_pattern(handler, pattern)
        @line_patterns << {
            :handler => handler,
            :pattern => pattern
        }
    end

# File lib/texy.rb, line 154
    def register_module(mod)
        @modules ||= []
        @modules << mod
    end

# File lib/texy.rb, line 265
    def safe_mode
        self.allowed_classes = false # no class or ID are allowed
        self.allowed_styles = false # style modifiers are disabled
        html_module.safe_mode # only HTML tags and attributes specified in $safeTags array are allowed
        image_module.allowed = false # disable images
        link_module.force_no_follow = true # force rel="nofollow"
    end

# File lib/texy.rb, line 276
    def trust_mode
        self.allowed_classes = :all # classes and id are allowed
        self.allowed_styles = :all # inline styles are allowed
        html_module.trust_mode # full support for HTML tags
        image_module.allowed = true # enable images
        link_module.force_no_follow = true # disable automatic rel="nofollow"
    end

# File lib/texy.rb, line 248
    def init
        @cache = []
        @line_patterns = []
        @block_patterns = []

        raise RuntimeError, 'Texy: No modules installed' if modules.empty?

        # init modules
        modules.map &:init
    end

# File lib/texy.rb, line 184
    def load_modules
        # Line parsing - order does not matter
        @script_module = Modules::Script.new(self)
        @html_module = Modules::Html.new(self)
        @image_module = Modules::Image.new(self)
        @link_module = Modules::Link.new(self)
        @phrase_module = Modules::Phrase.new(self)
        @smilies_module = Modules::Smilies.new(self)

        # Block parsing - order does not matter
        @block_module = Modules::Block.new(self)
        @heading_module = Modules::Heading.new(self)
        @horiz_line_module = Modules::HorizLine.new(self)
        @quote_module = Modules::Quote.new(self)
        @list_module = Modules::List.new(self)
        @definition_list_module = Modules::DefinitionList.new(self)
        @table_module = Modules::Table.new(self)
        @image_desc_module = Modules::ImageDesc.new(self)
        @generic_block_module = Modules::GenericBlock.new(self)

        # post process
        @quick_correct_module = Modules::QuickCorrect.new(self)
#        @long_words_module = Modules::LongWords.new(self)
        @formatter_module = Modules::Formatter.new(self)
    end