# -*- encoding: utf-8 -*-
module ArtiMark
  module CommandLexer
    def escape_html(string)
      string.to_s.gsub("&", "&").
        gsub("<", "&lt;").
        gsub(">", "&gt;").
        gsub('"', "&quot;")
    end

    def class_string(cls_array)
      if cls_array.size == 0
        ''
      else
        " class='#{cls_array.join(' ')}'"
      end
    end

    def class_array(cls_part)
      cls_array = []
      if !cls_part.nil? && cls_part.size > 0
        cls_array = cls_part[1..-1].split('.')
      end
      cls_array
    end

    def param_array(param_part)
      r = []
      if !param_part.nil? && param_part.size > 0
        r = param_part.split(',')
      end
      r
    end 

    def lex_line_command(line)
        line =~ /^([\w\*;]+?)((?:\.[A-Za-z0-9_\-]+?)*)(?:\((.+?)\))?\s*:(.*?)$/
        return { :cmd => $1, :cls => class_array($2), :params => param_array($3), :text => $4 }
    end

    def lex_block_command(line)
        line =~ /^(\w+?)((?:\.[A-Za-z0-9_\-]+?)*)(?:\((.+?)\))?\s*{\s*$/
        return { :cmd => $1, :cls => class_array($2), :params => param_array($3)}
    end

    def replace_inline_commands(line, syntax, context)
      line.gsub(/\[(\w+?)((?:\.[A-Za-z0-9_\-]+?)*)(?:\((.+?)\))?\s*{(.*?)}\]/) {
        |matched|
        lexed = {:cmd => $1, :cls => class_array($2), :params => param_array($3), :text => $4 }
        if !lexed[:cmd].nil? 
          syntax.inline_handler.send(lexed[:cmd], lexed, context)
        else
          matched
        end
      }
    end

  end
end