Module: Sanscript::Detect::Ruby24

Included in:
Sanscript::Detect
Defined in:
lib/sanscript/detect/ruby24.rb

Overview

Module implementing ‘detect_scheme` method using Ruby 2.4’s faster Regexp#match? method (Note: This module will only load if chosen by Sanscript::Detect.)

Instance Method Summary collapse

Instance Method Details

#ruby_detect_scheme(text) ⇒ Symbol?

Attempts to detect the encoding scheme of the provided string. Uses Ruby 2.4’s Regexp#match? method for additional speed.

Parameters:

  • text (String) —

    a string of Sanskrit text

Returns:

  • (Symbol, nil) —

    the Symbol of the scheme, or nil if no match



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# File 'lib/sanscript/detect/ruby24.rb', line 13

def ruby_detect_scheme(text) # rubocop:disable AbcSize, PerceivedComplexity
  text = text.to_str.gsub(RE_CONTROL_BLOCK, "")

  # Brahmic schemes are all within a specific range of code points.
  brahmic_char = text[RE_BRAHMIC_RANGE]
  return BRAHMIC_SCRIPTS_ORDER[(brahmic_char.ord - 0x0900) / 0x80] if brahmic_char

  # Romanizations
  if RE_IAST_OR_KOLKATA_ONLY.match?(text)
    return :kolkata if RE_KOLKATA_ONLY.match?(text)
    :iast
  elsif RE_ITRANS_ONLY.match?(text)
    :itrans
  elsif RE_SLP1_ONLY.match?(text)
    :slp1
  elsif RE_VELTHUIS_ONLY.match?(text)
    :velthuis
  elsif RE_ITRANS_OR_VELTHUIS_ONLY.match?(text)
    :itrans
  elsif RE_HARVARD_KYOTO.match?(text)
    :hk
  end
end