Class: TChart::SettingsParser

Inherits:
Object
  • Object
show all
Defined in:
lib/tchart/process/settings_parser.rb

Overview

Responsible for parsing a line of source data that contains a setting. Also responsible for accumulating parsed settings.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SettingsParser

Returns a new instance of SettingsParser.



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# File 'lib/tchart/process/settings_parser.rb', line 17

def initialize
  @settings = Settings.new
end

Instance Attribute Details

#settings ⇒ Object (readonly)

The accumulated settings. All settings start with their default values and get updated as setting lines are parsed. If a setting is specified more than once in the source data, the last value found will be the one used.



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# File 'lib/tchart/process/settings_parser.rb', line 15

def settings
  @settings
end

Instance Method Details

#parse?(line) ⇒ Boolean

Return true if the passed line is a recognizable settings line (which may nonetheless have errors, such as unknown setting, etc.), false otherwise.

Returns:

  • (Boolean) 


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# File 'lib/tchart/process/settings_parser.rb', line 26

def parse?(line)
  return false if (match = /^([^=]+)=(.+)$/.match(line)).nil?
  name, value_as_string = match[1].strip, match[2].strip
  raise_unknown_setting(name) unless known_setting?(name)
  raise_not_a_recognizable_value(value_as_string) unless recognizable_value?(value_as_string)
  save_setting(name, value_as_string)
  true
end