Class: JserrorRails::JserrorTemplate

Inherits:
Tilt::Template
  • Object
show all
Defined in:
lib/jserror-rails/jserror_template.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.default_mime_type ⇒ Object 



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# File 'lib/jserror-rails/jserror_template.rb', line 7

def self.default_mime_type
  'application/javascript'
end

Instance Method Details

#evaluate(scope, locals, &block) ⇒ Object 



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# File 'lib/jserror-rails/jserror_template.rb', line 14

def evaluate(scope, locals, &block)
  data_copy = data
  scanning_data = data
  functions = []
  capture = true
  while capture
    function = (/(^.*= function.*$)/).match(scanning_data)
    if function 
      if function.to_s.count('{') != function.to_s.count('}')
        old_lines = []
        new_code_lines = []

        scanning_data = function.post_match
        method_line = function.captures.first
      
        tabs = method_line.partition(method_line.strip[0]).first
        name = method_line.match(/(.*) = function/).captures.first.strip
      
        arguments = method_line.gsub(tabs, '').gsub(name, '').gsub(/\s*=\s*function\s*\(/, '').gsub(/\)\s*{.*$/, '').strip.split(', ').map {|a| "{#{a}: #{a}}"}

        new_code_lines << method_line
        old_lines << method_line
      
        new_code_lines << "\n#{tabs}\ttry {"

        bracket_count = 1 #start scanning until we find the ending bracket
        scanning_data.each_line do |line|
          line.chars do |char|
            bracket_count += 1 if char == '{'
            bracket_count -= 1 if char == '}'
          end
          new_code_lines << "\t" + line
          old_lines << line
          break if bracket_count <= 0
        end
      
        new_code_lines.pop #pop of the last }; to add catch block before closing bracket in function

        console_line = "javascript_error({name: '#{name.gsub('\'', '"')}',  
                                    error_message: e.message, 
                                    error_name: e.name, 
                                    code_block: '#{old_lines.join('').gsub("\n", '[::n::]').gsub('\'', '')}', 
                                    arguments: [#{arguments.join(', ')}]
                        });"
      
        new_code_lines << "#{tabs}\t} catch (e) { \n#{tabs}\t\t#{console_line}\n#{tabs}\t}\n"
        new_code_lines << "#{tabs}};\n"
        functions << {:replace => old_lines.join(''), :new => new_code_lines.join('')}
      else
        scanning_data = function.post_match
      end
    else
      capture = false
    end
  end
  
  scanning_data = data_copy.clone
  capture = true
  while capture
    function = (/(.*\(.+function\(.*\).*\{.*$)/).match(scanning_data)
    if function
      if function.to_s.match(/setTimeout/).nil?
        old_lines = []
        new_code_lines = []

        scanning_data = function.post_match
        method_line = function.captures.first
      
        tabs = method_line.partition(method_line.strip[0]).first
      
        name = method_line
        arguments = (/.*\(.+function\((.*)\).*\{.*$/).match(method_line).captures.first.split(', ').map {|a| "{#{a}: #{a}}"}

        new_code_lines << method_line
        old_lines << method_line
      
        new_code_lines << "\n#{tabs}\ttry {"

        bracket_count = 1 #start scanning until we find the ending bracket
        scanning_data.each_line do |line|
          line.chars do |char|
            bracket_count += 1 if char == '{'
            bracket_count -= 1 if char == '}'
          end
          new_code_lines << "\t" + line
          old_lines << line
          break if bracket_count <= 0
        end
      
        new_code_lines.pop #pop of the last }; to add catch block before closing bracket in function

        console_line = "javascript_error({name: '#{name.gsub('\'', '"')}',  
                                    error_message: e.message, 
                                    error_name: e.name, 
                                    code_block: '#{old_lines.join('').gsub("\n", '[::n::]').gsub('\'', '')}', 
                                    arguments: [#{arguments.join(', ')}]
                        });"
      
        new_code_lines << "#{tabs}\t} catch (e) { \n#{tabs}\t\t#{console_line}\n#{tabs}\t}\n"
        new_code_lines << "#{tabs}});\n"
        functions << {:replace => old_lines.join(''), :new => new_code_lines.join('')}
      else
        scanning_data = function.post_match
      end
    else
      capture = false
    end
  end
  

  functions.each do |s|
    data_copy.gsub!(s[:replace], s[:new])
  end
  
  output = "try {"
  output << data_copy
  output << "} catch (e) { javascript_error({name: 'unfound javascript error', error_message: e.message, error_name: e.name, code_block: '#{scope.logical_path.to_s}', arguments: []}); }"
  output
end

#prepare ⇒ Object 



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# File 'lib/jserror-rails/jserror_template.rb', line 11

def prepare
end