111 lines
3.0 KiB
JavaScript
111 lines
3.0 KiB
JavaScript
/**
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* @licstart The following is the entire license notice for the
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* JavaScript code in this page
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*
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* Copyright 2022 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @licend The above is the entire license notice for the
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* JavaScript code in this page
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*/
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.CharacterType = void 0;
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exports.getCharacterType = getCharacterType;
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const CharacterType = {
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SPACE: 0,
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ALPHA_LETTER: 1,
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PUNCT: 2,
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HAN_LETTER: 3,
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KATAKANA_LETTER: 4,
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HIRAGANA_LETTER: 5,
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HALFWIDTH_KATAKANA_LETTER: 6,
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THAI_LETTER: 7
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};
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exports.CharacterType = CharacterType;
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function isAlphabeticalScript(charCode) {
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return charCode < 0x2e80;
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}
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function isAscii(charCode) {
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return (charCode & 0xff80) === 0;
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}
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function isAsciiAlpha(charCode) {
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return charCode >= 0x61 && charCode <= 0x7a || charCode >= 0x41 && charCode <= 0x5a;
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}
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function isAsciiDigit(charCode) {
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return charCode >= 0x30 && charCode <= 0x39;
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}
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function isAsciiSpace(charCode) {
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return charCode === 0x20 || charCode === 0x09 || charCode === 0x0d || charCode === 0x0a;
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}
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function isHan(charCode) {
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return charCode >= 0x3400 && charCode <= 0x9fff || charCode >= 0xf900 && charCode <= 0xfaff;
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}
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function isKatakana(charCode) {
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return charCode >= 0x30a0 && charCode <= 0x30ff;
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}
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function isHiragana(charCode) {
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return charCode >= 0x3040 && charCode <= 0x309f;
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}
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function isHalfwidthKatakana(charCode) {
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return charCode >= 0xff60 && charCode <= 0xff9f;
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}
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function isThai(charCode) {
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return (charCode & 0xff80) === 0x0e00;
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}
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function getCharacterType(charCode) {
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if (isAlphabeticalScript(charCode)) {
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if (isAscii(charCode)) {
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if (isAsciiSpace(charCode)) {
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return CharacterType.SPACE;
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} else if (isAsciiAlpha(charCode) || isAsciiDigit(charCode) || charCode === 0x5f) {
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return CharacterType.ALPHA_LETTER;
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}
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return CharacterType.PUNCT;
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} else if (isThai(charCode)) {
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return CharacterType.THAI_LETTER;
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} else if (charCode === 0xa0) {
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return CharacterType.SPACE;
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}
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return CharacterType.ALPHA_LETTER;
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}
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if (isHan(charCode)) {
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return CharacterType.HAN_LETTER;
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} else if (isKatakana(charCode)) {
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return CharacterType.KATAKANA_LETTER;
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} else if (isHiragana(charCode)) {
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return CharacterType.HIRAGANA_LETTER;
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} else if (isHalfwidthKatakana(charCode)) {
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return CharacterType.HALFWIDTH_KATAKANA_LETTER;
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}
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return CharacterType.ALPHA_LETTER;
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} |