Class: PythonConfig::ConfigSection

Inherits:
Hash
  • Object
show all
Defined in:
lib/pythonconfig.rb

Overview

ConfigSection

This is a simple section in a config document - treat it exactly like a hash, whose keys are the keys in the config, and whose value are the values in the config.

This is a separate class entirely because it has to handle the magical interpolation that allows this ini file:

[Awards]
output: Congratulations for winning %(prize)!
prize: the lottery

To result in:

config.sections["Awards"]["output"] == "Congratulations for winning the lottery!"

Instance Method Summary collapse

Constructor Details

#initialize(source) ⇒ ConfigSection

Returns a new instance of ConfigSection.



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# File 'lib/pythonconfig.rb', line 131

def initialize(source)
  @source_hash = source
  super(@source_hash)
end

Instance Method Details

#[](key) ⇒ Object

:nodoc:



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# File 'lib/pythonconfig.rb', line 135

def [](key) #:nodoc:
  str = @source_hash[key]
  interpolate(str)
end

#interpolate(str, cur_depth = 0) ⇒ Object

:nodoc:

Raises:



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# File 'lib/pythonconfig.rb', line 140

def interpolate(str, cur_depth=0) #:nodoc:
  raise InterpolationTooDeepError.new("Interpolation too deep!") if cur_depth > PythonConfig::MAX_INTERPOLATION_DEPTH
  nextval = str
  nextval = str.gsub(/\%\((.*)\)/,@source_hash[$1]) if str =~ /%\((.*)\)/
  nextval = interpolate(nextval,cur_depth+1) if nextval =~ /%\((.*)\)/
  nextval
end

#to_s ⇒ Object

:nodoc:



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# File 'lib/pythonconfig.rb', line 148

def to_s #:nodoc:
  output = ""
  @source_hash.each do |k,v|
    output << "#{k} = #{v.gsub(/\n/,"\n ")}" << "\n"
  end
  output
end