Class: Yosina::Transliterators::IvsSvsBase::ForwardTransliterator

Inherits:
Object
  • Object
show all
Defined in:
lib/yosina/transliterators/ivs_svs_base.rb

Overview

Forward transliterator to add IVS/SVS selectors to base characters

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(base_to_variants, prefer_svs) ⇒ ForwardTransliterator

Initialize the forward transliterator with options

Parameters:

  • base_to_variants (Hash) —

    Mapping of base characters to their IVS/SVS variants

  • prefer_svs (Boolean) —

    Whether to prefer SVS over IVS when both exist



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# File 'lib/yosina/transliterators/ivs_svs_base.rb', line 17

def initialize(base_to_variants, prefer_svs)
  @base_to_variants = base_to_variants
  @prefer_svs = prefer_svs
end

Instance Attribute Details

#base_to_variants ⇒ Object (readonly)

Returns the value of attribute base_to_variants.



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# File 'lib/yosina/transliterators/ivs_svs_base.rb', line 11

def base_to_variants
  @base_to_variants
end

#prefer_svs ⇒ Object (readonly)

Returns the value of attribute prefer_svs.



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# File 'lib/yosina/transliterators/ivs_svs_base.rb', line 11

def prefer_svs
  @prefer_svs
end

Instance Method Details

#call(input_chars) ⇒ Enumerable<Char>

Add IVS/SVS selectors to base characters

Parameters:

  • input_chars (Enumerable<Char>) —

    The characters to transliterate

Returns:

  • (Enumerable<Char>) —

    The transliterated characters



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# File 'lib/yosina/transliterators/ivs_svs_base.rb', line 26

def call(input_chars)
  offset = 0

  Chars.enum do |y|
    input_chars.each do |char|
      # Try to add IVS/SVS selectors to base characters
      record = @base_to_variants[char.c]
      replacement = nil
      if record
        if @prefer_svs && record.svs
          replacement = record.svs
        elsif record.ivs
          replacement = record.ivs
        end
      end

      if replacement
        y << Char.new(c: replacement, offset: offset, source: char)
        offset += replacement.length
      else
        y << char.with_offset(offset)
        offset += char.c.length
      end
    end
  end
end