Class: DiffLCS::WordSplitArray

Inherits:
Array
  • Object
show all
Defined in:
lib/diff_l_c_s/word_split_array.rb

Overview

–# Copyright: © 2006-2008 The LogiLogi Foundation <[email protected]>

License:

This file is part of the DiffLCS library. DiffLCS is Free Software.
You can run/distribute/modify DiffLCS under the terms of the GNU Affero 
General Public License version 3. The Affero GPL states that running a 
modified version or a derivative work also requires you to make the 
sourcecode of that work available to everyone that can interact with it. 
We chose the Affero GPL to ensure that DiffLCS remains open and libre 
(LICENSE.txt contains the full text of the legally binding license).

++#

Constant Summary collapse

SEPARATOR =

Used as a separator

"\031"

Instance Method Summary collapse

Constructor Details

#initialize(text) ⇒ WordSplitArray

Splits the words, and treats whitespace correctly.



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# File 'lib/diff_l_c_s/word_split_array.rb', line 25

def initialize(text)
  old_end = 0
  # splits for html-tags, for any non-word-characters & for SEPARATORs
  treated = text.scan(/<\/?\w+>|[^\w<\/>#{SEPARATOR}]+|#{SEPARATOR}/) do |literal|
    match = $~
    if match.begin(0) > old_end
      self.push(text[old_end...match.begin(0)])
    end
    self.push(literal)
    old_end = match.end(0)
  end
  if old_end < text.size
    self.push(text[old_end...text.size])
  end
end

Instance Method Details

#translate_to_pos(positions) ⇒ Object

Translates word-positions to character-positions.



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# File 'lib/diff_l_c_s/word_split_array.rb', line 45

def translate_to_pos(positions)
  word_p = 0
  temp_array = [0]
  i = 0
  while i < self.size
    word_p += self[i].size
    temp_array.push(word_p)
    i += 1
  end
  return PositionRange::List.new(
      positions.collect {|position| position.new_dup(
          temp_array[position.begin], temp_array[position.end])})
end