chrono-node
Version:
A natural language date parser in Javascript
47 lines • 1.71 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const constants_1 = require("../constants");
const pattern_1 = require("../../../utils/pattern");
const AbstractParserWithWordBoundary_1 = require("../../../common/parsers/AbstractParserWithWordBoundary");
const PATTERN = new RegExp(`([0-9]{4})[-\\.\\/\\s]` +
`(?:(${(0, pattern_1.matchAnyPattern)(constants_1.MONTH_DICTIONARY)})|([0-9]{1,2}))[-\\.\\/\\s]` +
`([0-9]{1,2})` +
"(?=\\W|$)", "i");
const YEAR_NUMBER_GROUP = 1;
const MONTH_NAME_GROUP = 2;
const MONTH_NUMBER_GROUP = 3;
const DATE_NUMBER_GROUP = 4;
class ENYearMonthDayParser extends AbstractParserWithWordBoundary_1.AbstractParserWithWordBoundaryChecking {
constructor(strictMonthDateOrder) {
super();
this.strictMonthDateOrder = strictMonthDateOrder;
}
innerPattern() {
return PATTERN;
}
innerExtract(context, match) {
const year = parseInt(match[YEAR_NUMBER_GROUP]);
let day = parseInt(match[DATE_NUMBER_GROUP]);
let month = match[MONTH_NUMBER_GROUP]
? parseInt(match[MONTH_NUMBER_GROUP])
: constants_1.MONTH_DICTIONARY[match[MONTH_NAME_GROUP].toLowerCase()];
if (month < 1 || month > 12) {
if (this.strictMonthDateOrder) {
return null;
}
if (day >= 1 && day <= 12) {
[month, day] = [day, month];
}
}
if (day < 1 || day > 31) {
return null;
}
return {
day: day,
month: month,
year: year,
};
}
}
exports.default = ENYearMonthDayParser;
//# sourceMappingURL=ENYearMonthDayParser.js.map