Class: TextSplitters::RecursiveCharacterTextSplitter

Inherits:
Object
  • Object
show all
Defined in:
lib/text_splitters/recursive_character_text_splitter.rb

Overview

Ruby port of github.com/hwchase17/langchain/blob/763f87953686a69897d1f4d2260388b88eb8d670/langchain/text_splitter.py#L221

Instance Method Summary collapse

Constructor Details

#initialize(chunk_size:, chunk_overlap:) ⇒ RecursiveCharacterTextSplitter

Returns a new instance of RecursiveCharacterTextSplitter.



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# File 'lib/text_splitters/recursive_character_text_splitter.rb', line 4

def initialize(chunk_size:, chunk_overlap:)
  @chunk_size = chunk_size
  @chunk_overlap = chunk_overlap
  @separators = ["\n\n", "\n", " ", ""]
end

Instance Method Details

#split(text) ⇒ Object 



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# File 'lib/text_splitters/recursive_character_text_splitter.rb', line 10

def split(text)
  output = []
  good_splits = []

  separator = @separators.last
  @separators.each do |s|
    if text.include?(s)
      separator = s
      break
    end
  end
  splits = text.split(separator)

  splits.each do |s|
    if s.length < @chunk_size
      good_splits << s
    else
      if good_splits.any?
        merged_text = merge_splits(good_splits, separator)
        output.concat(merged_text)
        good_splits = []
      end

      other_info = split(s)
      output.concat(other_info)
    end
  end

  if good_splits.any?
    merged_text = merge_splits(good_splits, separator)
    output.concat(merged_text)
  end

  output
end