check-ends-with-period
Version:
Check the text is ends with period mark.
82 lines • 2.83 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.checkEndsWithPeriod = void 0;
// MIT © 2017 azu
const emoji_regex_1 = __importDefault(require("emoji-regex"));
const emojiRegExp = (0, emoji_regex_1.default)();
const exceptionMarkRegExp = /[!?！？)）」』]/;
/**
* Check ends with period.
* @param {string} lineText
* @param {string[]} [periodMarks]
* @param {boolean} [allowExceptionMark] often used at end.
* @param {boolean} [allowEmoji]
* @returns {{valid: boolean, periodMark: string, index: number}}
*
* `index` is index value of last character.
* If last character is a parts of periodMarks, `index` is the position of periodMark.
* If last character is not a parts of periodMarks, `index` is the position of the last character.
* If last character is white space, `index` is the position of starting of white space on the end.
*/
const checkEndsWithPeriod = function (lineText, { periodMarks = ["。", "."], allowExceptionMark = true, allowEmoji = false, } = {}) {
// サロゲートペアを考慮した文字列長・文字アクセス
const characters = [...lineText];
const lastCharacterIndex = characters.length - 1;
const periodMark = characters[lastCharacterIndex];
if (/\s/.test(periodMark)) {
const result = lineText.match(/\s+$/);
if (!result) {
// TODO: this case will not ever happen
return {
valid: false,
periodMark: " ",
index: lastCharacterIndex - 1
};
}
const [whiteSpaces] = result;
return {
valid: false,
periodMark: whiteSpaces,
index: lastCharacterIndex - (whiteSpaces.length - 1)
};
}
// allo exclamation mark and serif symbol
if (allowExceptionMark && exceptionMarkRegExp.test(periodMark)) {
return {
valid: true,
periodMark,
index: lastCharacterIndex
};
}
// allow emoji
if (allowEmoji && emojiRegExp.test(periodMark)) {
return {
valid: true,
periodMark,
index: lastCharacterIndex
};
}
/**
* @type {string|undefined}
*/
const matchMark = periodMarks.find(mark => {
return lineText.endsWith(mark);
});
if (matchMark) {
return {
valid: true,
periodMark: matchMark,
index: lineText.length - matchMark.length
};
}
return {
valid: false,
periodMark,
index: lastCharacterIndex
};
};
exports.checkEndsWithPeriod = checkEndsWithPeriod;
//# sourceMappingURL=index.js.map