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Manipulate korean hangul characters (한글)

Hangul #

This package is an utility to manipulate korean hangul characters (한글) in dart.

Install #

$ dart pub add hangul

Getting Started #

The basics of the library is to manipulate hangul syllables.

A hangul syllable is composed of 3 jamos:

  • a "cho" jamo that is the first consonant
  • a "jung" jamo that is the vowel
  • an optional "jong" jamo that is the last consonant

split a syllable into jamos #

HangulSyllable.fromString will split a given hangul syllable
and return a valid HangulSyllable instance.

It throws if the given string is not a valid syllable.

import 'package:hangul/hangul.dart';

final syllable = HangulSyllable.fromString('쪲');

syllable.cho == 'ㅉ'; // true
syllable.jung == 'ㅖ'; // true
syllable.jung == 'ㅄ'; // true

assemble jamos into a syllable #

HangulSyllable constructor allows to instantiate a syllable from 3 valid jamos.

It throws if the given string is not a valid jamo (order for cho, jung and jong matters).

import 'package:hangul/hangul.dart';

final syllable = HangulSyllable('ㅉ', 'ㅖ', 'ㅄ');

syllable.tostring() == '쪲'; // true

The following will throw

import 'package:hangul/hangul.dart';

HangulSyllable('ㅆ', 'a');

// thrown AssertionError with message "Invalid character provided for jung."

utilities #

import 'package:hangul/hangul.dart';

// check jamo
isValidCho('ㄱ');  // true
isValidJung('ㅏ'); // true
isValidJong('ㄱ'); // true
isValidJong('ㅄ'); // true
isValidCho('ㅏ');  // false
isValidCho('ㅄ');  // false

// can also be used from character code
isValidChoCode('ㄱ'.codeUnitAt(0));  // true
isValidJungCode('ㅏ'.codeUnitAt(0)); // true
isValidJongCode('ㄱ'.codeUnitAt(0)); // true

// check syllable
isHangulSyllable('쪲');   // true
isHangulSyllable('쪲가'); // false
isHangulSyllable('ㄱ');   // false
isHangulSyllable('q');   // false

// can also be used from character code
isHangulSyllableCode('쪲'.codeUnitAt(0));   // true

// list of valid cho jung and jong are also exported:
final Set allJamos = {...choJamos, ...jungJamos, ...jongJamos};
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Manipulate korean hangul characters (한글)

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