var arrayParser = require(__dirname + "/arrayParser.js"); //parses PostgreSQL server formatted date strings into javascript date objects var parseDate = function(isoDate) { //TODO this could do w/ a refactor var dateMatcher = /(\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})(\.\d{1,})?/; var match = dateMatcher.exec(isoDate); //could not parse date if(!match) { return null; } var year = match[1]; var month = parseInt(match[2],10)-1; var day = match[3]; var hour = parseInt(match[4],10); var min = parseInt(match[5],10); var seconds = parseInt(match[6], 10); var miliString = match[7]; var mili = 0; if(miliString) { mili = 1000 * parseFloat(miliString); } var tZone = /([Z|+\-])(\d{2})?(\d{2})?/.exec(isoDate.split(' ')[1]); //minutes to adjust for timezone var tzAdjust = 0; if(tZone) { var type = tZone[1]; switch(type) { case 'Z': break; case '-': tzAdjust = -(((parseInt(tZone[2],10)*60)+(parseInt(tZone[3]||0,10)))); break; case '+': tzAdjust = (((parseInt(tZone[2],10)*60)+(parseInt(tZone[3]||0,10)))); break; default: throw new Error("Unidentifed tZone part " + type); } } var utcOffset = Date.UTC(year, month, day, hour, min, seconds, mili); var date = new Date(utcOffset - (tzAdjust * 60* 1000)); return date; }; var parseBool = function(val) { return val === 't'; } var parseIntegerArray = function(val) { if(!val) return null; var p = arrayParser.create(val, function(entry){ if(entry != null) entry = parseInt(entry, 10); return entry; }); return p.parse(); }; var parseFloatArray = function(val) { if(!val) return null; var p = arrayParser.create(val, function(entry){ if(entry != null) entry = parseFloat(entry, 10); return entry; }); return p.parse(); }; var parseStringArray = function(val) { if(!val) return null; var p = arrayParser.create(val); return p.parse(); }; var NUM = '([+-]?\\d+)'; var YEAR = NUM + '\\s+years?'; var MON = NUM + '\\s+mons?'; var DAY = NUM + '\\s+days?'; var TIME = '([+-])?(\\d\\d):(\\d\\d):(\\d\\d)'; var INTERVAL = [YEAR,MON,DAY,TIME].map(function(p){ return "("+p+")?" }).join('\\s*'); var parseInterval = function(val) { if (!val) return {}; var m = new RegExp(INTERVAL).exec(val); var i = {}; if (m[2]) i.years = parseInt(m[2], 10); if (m[4]) i.months = parseInt(m[4], 10); if (m[6]) i.days = parseInt(m[6], 10); if (m[9]) i.hours = parseInt(m[9], 10); if (m[10]) i.minutes = parseInt(m[10], 10); if (m[11]) i.seconds = parseInt(m[11], 10); if (m[8] == '-'){ if (i.hours) i.hours *= -1; if (i.minutes) i.minutes *= -1; if (i.seconds) i.seconds *= -1; } for (field in i){ if (i[field] == 0) delete i[field]; } return i; }; var parseByteA = function(val) { return new Buffer(val.replace(/\\([0-7]{3})/g, function (full_match, code) { return String.fromCharCode(parseInt(code, 8)); }).replace(/\\\\/g, "\\"), "binary"); } var maxLen = Number.MAX_VALUE.toString().length var parseInteger = function(val) { return parseInt(val, 10); } var init = function(register) { register(20, parseInteger); register(21, parseInteger); register(23, parseInteger); register(26, parseInteger); register(1700, function(val){ if(val.length > maxLen) { console.warn('WARNING: value %s is longer than max supported numeric value in javascript. Possible data loss', val) } return parseFloat(val); }); register(700, parseFloat); register(701, parseFloat); register(16, parseBool); register(1114, parseDate); register(1184, parseDate); register(1005, parseIntegerArray); // _int2 register(1007, parseIntegerArray); // _int4 register(1016, parseIntegerArray); // _int8 register(1021, parseFloatArray); // _float4 register(1022, parseFloatArray); // _float8 register(1231, parseIntegerArray); // _numeric register(1008, parseStringArray); register(1009, parseStringArray); register(1186, parseInterval); register(17, parseByteA); }; module.exports = { init: init, };