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Viewing file:     ExtractTimezoneAbbrRefiner.js (3.73 KB)      -rw-r--r--

/*

*/
var Refiner = require('./refiner').Refiner;

// Map ABBR -> Offset in minute
var TIMEZONE_NAME_PATTERN = new RegExp("^\\s*\\(?([A-Z]{2,4})\\)?(?=\\W|$)", 'i');
var DEFAULT_TIMEZONE_ABBR_MAP = {
    "ACDT":630,"ACST":570,"ADT":-180,"AEDT":660,"AEST":600,"AFT":270,"AKDT":-480,"AKST":-540,"ALMT":360,"AMST":-180,"AMT":-240,"ANAST":720,"ANAT":720,"AQTT":300,"ART":-180,"AST":-240,"AWDT":540,"AWST":480,"AZOST":0,"AZOT":-60,"AZST":300,"AZT":240,"BNT":480,"BOT":-240,"BRST":-120,"BRT":-180,"BST":60,"BTT":360,"CAST":480,"CAT":120,"CCT":390,"CDT":-300,"CEST":120,"CET":60,"CHADT":825,"CHAST":765,"CKT":-600,"CLST":-180,"CLT":-240,"COT":-300,"CST":-360,"CVT":-60,"CXT":420,"ChST":600,"DAVT":420,"EASST":-300,"EAST":-360,"EAT":180,"ECT":-300,"EDT":-240,"EEST":180,"EET":120,"EGST":0,"EGT":-60,"EST":-300,"ET":-300,"FJST":780,"FJT":720,"FKST":-180,"FKT":-240,"FNT":-120,"GALT":-360,"GAMT":-540,"GET":240,"GFT":-180,"GILT":720,"GMT":0,"GST":240,"GYT":-240,"HAA":-180,"HAC":-300,"HADT":-540,"HAE":-240,"HAP":-420,"HAR":-360,"HAST":-600,"HAT":-90,"HAY":-480,"HKT":480,"HLV":-210,"HNA":-240,"HNC":-360,"HNE":-300,"HNP":-480,"HNR":-420,"HNT":-150,"HNY":-540,"HOVT":420,"ICT":420,"IDT":180,"IOT":360,"IRDT":270,"IRKST":540,"IRKT":540,"IRST":210,"IST":330,"JST":540,"KGT":360,"KRAST":480,"KRAT":480,"KST":540,"KUYT":240,"LHDT":660,"LHST":630,"LINT":840,"MAGST":720,"MAGT":720,"MART":-510,"MAWT":300,"MDT":-360,"MESZ":120,"MEZ":60,"MHT":720,"MMT":390,"MSD":240,"MSK":240,"MST":-420,"MUT":240,"MVT":300,"MYT":480,"NCT":660,"NDT":-90,"NFT":690,"NOVST":420,"NOVT":360,"NPT":345,"NST":-150,"NUT":-660,"NZDT":780,"NZST":720,"OMSST":420,"OMST":420,"PDT":-420,"PET":-300,"PETST":720,"PETT":720,"PGT":600,"PHOT":780,"PHT":480,"PKT":300,"PMDT":-120,"PMST":-180,"PONT":660,"PST":-480,"PT":-480,"PWT":540,"PYST":-180,"PYT":-240,"RET":240,"SAMT":240,"SAST":120,"SBT":660,"SCT":240,"SGT":480,"SRT":-180,"SST":-660,"TAHT":-600,"TFT":300,"TJT":300,"TKT":780,"TLT":540,"TMT":300,"TVT":720,"ULAT":480,"UTC":0,"UYST":-120,"UYT":-180,"UZT":300,"VET":-210,"VLAST":660,"VLAT":660,"VUT":660,"WAST":120,"WAT":60,"WEST":60,"WESZ":60,"WET":0,"WEZ":0,"WFT":720,"WGST":-120,"WGT":-180,"WIB":420,"WIT":540,"WITA":480,"WST":780,"WT":0,"YAKST":600,"YAKT":600,"YAPT":600,"YEKST":360,"YEKT":360
};

exports.Refiner = function ExtractTimezoneAbbrRefiner(config) {
	Refiner.call(this, arguments);

	this.refine = function(text, results, opt) {

	    var timezones = new Object(DEFAULT_TIMEZONE_ABBR_MAP);
	    if (opt.timezones) {
	        for (var name in opt.timezones) {
                timezones[name] = opt.timezones[name];
            }
        }

		results.forEach(function(result) {

            if (!result.tags['ENTimeExpressionParser'] &&
                !result.tags['ENCasualTimeParser'] &&
                !result.tags['ZHTimeExpressionParser'] &&
                !result.tags['FRTimeExpressionParser'] &&
                !result.tags['DETimeExpressionParser']) {
                return;
            }

            var match = TIMEZONE_NAME_PATTERN.exec(text.substring(result.index + result.text.length));
            if (match) {
                var timezoneAbbr = match[1].toUpperCase();
                if (timezones[timezoneAbbr] === undefined) {
                    return;
                }

                var timezoneOffset = timezones[timezoneAbbr];
                if (!result.start.isCertain('timezoneOffset')) {
                    result.start.assign('timezoneOffset', timezoneOffset);
                }

                if (result.end != null && !result.end.isCertain('timezoneOffset')) {
                    result.end.assign('timezoneOffset', timezoneOffset);
                }

                result.text += match[0];
                result.tags['ExtractTimezoneAbbrRefiner'] = true;
            }
		});

        return results;
	}
};