Package opennlp.tools.util.normalizer

Class EmojiToEmoticonCharSequenceNormalizer

java.lang.Object
opennlp.tools.util.normalizer.EmojiToEmoticonCharSequenceNormalizer
All Implemented Interfaces:
Serializable, opennlp.tools.util.normalizer.CharSequenceNormalizer, opennlp.tools.util.normalizer.OffsetAwareNormalizer
public final class EmojiToEmoticonCharSequenceNormalizer extends Object implements opennlp.tools.util.normalizer.OffsetAwareNormalizer
A CharSequenceNormalizer that folds emoji to ASCII emoticons, using the bundled emoji-emoticons.txt mapping (for example U+1F642 SLIGHTLY SMILING FACE to :)).

A mapped pictograph inside a larger ZWJ sequence or followed by U+FE0E VARIATION SELECTOR-15 is left untouched; a trailing U+FE0F VARIATION SELECTOR-16 after any mapped pictograph is absorbed into the fold, so no dangling variation selector is left behind. This is an expanding, offset-changing transform: normalizeAligned(CharSequence) reports the Alignment from the folded text back to the input. The reverse direction is EmoticonToEmojiCharSequenceNormalizer.

See Also:

  • Method Details

    • getInstance

      public static EmojiToEmoticonCharSequenceNormalizer getInstance()
      Returns the shared, stateless instance.
      Returns:
      the shared, stateless instance

    • normalize

      public CharSequence normalize(CharSequence text)
      Specified by:
      normalize in interface opennlp.tools.util.normalizer.CharSequenceNormalizer

    • normalizeAligned

      public opennlp.tools.util.normalizer.AlignedText normalizeAligned(CharSequence text)
      Specified by:
      normalizeAligned in interface opennlp.tools.util.normalizer.OffsetAwareNormalizer