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Viewing file:     DESlashDateFormatParser.js (2.81 KB)      -rw-r--r--

/*
    Date format with slash "/" (also "-" and ".") between numbers
    - Tuesday 11/3/2015
    - 11/3/2015
    - 11/3
*/
var dayjs = require('dayjs');
var Parser = require('../parser').Parser;
var ParsedResult = require('../../result').ParsedResult;

var PATTERN = new RegExp('(\\W|^)' +
    '(?:' +
        '(?:am\\s*?)?' +
        '((?:sonntag|so|montag|mo|dienstag|di|mittwoch|mi|donnerstag|do|freitag|fr|samstag|sa))' +
        '\\s*\\,?\\s*' +
        '(?:den\\s*)?' +
    ')?' +
    '([0-3]{0,1}[0-9]{1})[\\/\\.\\-]([0-3]{0,1}[0-9]{1})' +
    '(?:' +
        '[\\/\\.\\-]' +
        '([0-9]{4}\s*\,?\s*|[0-9]{2}\s*\,?\s*)' +
    ')?' +
    '(\\W|$)', 'i');

var DAYS_OFFSET = {
    'sonntag': 0, 'so': 0,
    'montag': 1, 'mo': 1,
    'dienstag': 2, 'di': 2,
    'mittwoch': 3, 'mi': 3,
    'donnerstag': 4, 'do': 4,
    'freitag': 5, 'fr': 5,
    'samstag': 6, 'sa': 6
};


var OPENNING_GROUP = 1;
var ENDING_GROUP = 6;

var WEEKDAY_GROUP = 2;
var DAY_GROUP = 3;
var MONTH_GROUP = 4;
var YEAR_GROUP = 5;

exports.Parser = function DESlashDateFormatParser(argument) {
    Parser.apply(this, arguments);

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

        if(match[OPENNING_GROUP] == '/' || match[ENDING_GROUP] == '/') {
            // Long skip, if there is some overlapping like:
            // XX[/YY/ZZ]
            // [XX/YY/]ZZ
            match.index += match[0].length
            return;
        }

        var index = match.index + match[OPENNING_GROUP].length;
        var text = match[0].substr(match[OPENNING_GROUP].length, match[0].length - match[ENDING_GROUP].length);


        var result = new ParsedResult({
            text: text,
            index: index,
            ref: ref,
        });

        if(text.match(/^\d\.\d$/)) return;
        if(text.match(/^\d\.\d{1,2}\.\d{1,2}$/)) return;

        // MM/dd -> OK
        // MM.dd -> NG
        if(!match[YEAR_GROUP] && match[0].indexOf('/') < 0) return;

        var year = match[YEAR_GROUP] || dayjs(ref).year() + '';
        var month = match[MONTH_GROUP];
        var day   = match[DAY_GROUP];

        month = parseInt(month);
        day  = parseInt(day);
        year = parseInt(year);

        if (month < 1 || month > 12) return null;
        if(day < 1 || day > 31) return null;

        if(year < 100){
            if (year > 50) {
                year = year + 1900;
            } else {
                year = year + 2000;
            }
        }

        result.start.assign('day', day);
        result.start.assign('month', month);
        result.start.assign('year', year);

        //Day of week
        if(match[WEEKDAY_GROUP]) {
            result.start.assign('weekday', DAYS_OFFSET[match[WEEKDAY_GROUP].toLowerCase()]);
        }

        result.tags['DESlashDateFormatParser'] = true;
        return result;
    };
};