Module: WithKnowledgeOfColor

Included in:
String
Defined in:
lib/qualitysmith_extensions/string/with_knowledge_of_color.rb

Overview

–

Author

Tyler Rick

Copyright

Copyright © 2007 QualitySmith, Inc.

License

Ruby License

Submit to Facets?

Maybe

++

Constant Summary collapse

Color_regexp = 
/\e\[[^m]+m/

Instance Method Summary collapse

Instance Method Details

#length_without_color ⇒ Object

This version of length takes into account the fact that the ANSI color codes themselves don’t take up any space to display on the screen. So this returns the number of characters wide the string is when it is actually printed to the screen.



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# File 'lib/qualitysmith_extensions/string/with_knowledge_of_color.rb', line 17

def length_without_color
  strip_color.length
end

#ljust_without_color(width) ⇒ Object 



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# File 'lib/qualitysmith_extensions/string/with_knowledge_of_color.rb', line 25

def ljust_without_color(width)
  ljust(width + nonprinting_characters_used_for_color.length)
end

#nonprinting_characters_used_for_color ⇒ Object 



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# File 'lib/qualitysmith_extensions/string/with_knowledge_of_color.rb', line 21

def nonprinting_characters_used_for_color
  self.scan(Color_regexp).join
end

#strip_color ⇒ Object 



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# File 'lib/qualitysmith_extensions/string/with_knowledge_of_color.rb', line 11

def strip_color
  gsub(Color_regexp, '')
end