chrono-node/src/parsers/parser.js

A natural language date parser in Javascript

function Parser(strictMode) {

    this.isStrictMode = function() { return (strictMode == true) };

    this.pattern = function() { return /./i; }

    this.extract = function(text, ref, match, opt){ return null; }

    this.execute = function(text, ref, opt) {

        var results = [];
        var regex = this.pattern();

        var remainingText = text;
        var match = regex.exec(remainingText);

        while (match) {

            // Calculate match index on the full text;
            match.index += text.length - remainingText.length;

            var result = this.extract(text, ref, match, opt);
            if (result) {

                // If success, start from the end of the result
                remainingText = text.substring(result.index + result.text.length);

                if (!this.isStrictMode() || result.hasPossibleDates()) {
                    results.push(result);
                }

            } else {
                // If fail, move on by 1
                remainingText = text.substring(match.index + 1);
            }

            match = regex.exec(remainingText);
        }

        if (this.refiners) {
            this.refiners.forEach(function () {
                results = refiner.refine(results, text, options);
            });
        }

        return results;
    }
}

exports.Parser = Parser;

exports.ENISOFormatParser = require('./EN/ENISOFormatParser').Parser;
exports.ENDeadlineFormatParser = require('./EN/ENDeadlineFormatParser').Parser;
exports.ENMonthNameLittleEndianParser = require('./EN/ENMonthNameLittleEndianParser').Parser;
exports.ENMonthNameMiddleEndianParser = require('./EN/ENMonthNameMiddleEndianParser').Parser;
exports.ENMonthNameParser = require('./EN/ENMonthNameParser').Parser;
exports.ENSlashDateFormatParser = require('./EN/ENSlashDateFormatParser').Parser;
exports.ENSlashDateFormatStartWithYearParser = require('./EN/ENSlashDateFormatStartWithYearParser').Parser;
exports.ENSlashMonthFormatParser = require('./EN/ENSlashMonthFormatParser').Parser;
exports.ENTimeAgoFormatParser = require('./EN/ENTimeAgoFormatParser').Parser;
exports.ENTimeExpressionParser = require('./EN/ENTimeExpressionParser').Parser;
exports.ENWeekdayParser = require('./EN/ENWeekdayParser').Parser;
exports.ENCasualDateParser = require('./EN/ENCasualDateParser').Parser;

exports.JPStandardParser = require('./JP/JPStandardParser').Parser;
exports.JPCasualDateParser = require('./JP/JPCasualDateParser').Parser;


exports.ESCasualDateParser = require('./ES/ESCasualDateParser').Parser;
exports.ESDeadlineFormatParser = require('./ES/ESDeadlineFormatParser').Parser;
exports.ESTimeAgoFormatParser = require('./ES/ESTimeAgoFormatParser').Parser;
exports.ESTimeExpressionParser = require('./ES/ESTimeExpressionParser').Parser;
exports.ESWeekdayParser = require('./ES/ESWeekdayParser').Parser;
exports.ESMonthNameLittleEndianParser = require('./ES/ESMonthNameLittleEndianParser').Parser;
exports.ESSlashDateFormatParser = require('./ES/ESSlashDateFormatParser').Parser;