Merge pull request #256 from breck7/master

Updated double equals to triple equals, removed whitespace at end of …

papaparse.js

@@ -5,7 +5,7 @@
 */
 (function(global)
 {
-	"use strict";
+	'use strict';
 
 	var IS_WORKER = !global.document && !!global.postMessage,
 		IS_PAPA_WORKER = IS_WORKER && /(\?|&)papaworker(=|&|$)/.test(global.location.search),
@@ -19,15 +19,15 @@
 
 	Papa.RECORD_SEP = String.fromCharCode(30);
 	Papa.UNIT_SEP = String.fromCharCode(31);
-	Papa.BYTE_ORDER_MARK = "\ufeff";
-	Papa.BAD_DELIMITERS = ["\r", "\n", "\"", Papa.BYTE_ORDER_MARK];
+	Papa.BYTE_ORDER_MARK = '\ufeff';
+	Papa.BAD_DELIMITERS = ['\r', '\n', '"', Papa.BYTE_ORDER_MARK];
 	Papa.WORKERS_SUPPORTED = !IS_WORKER && !!global.Worker;
 	Papa.SCRIPT_PATH = null;	// Must be set by your code if you use workers and this lib is loaded asynchronously
 
 	// Configurable chunk sizes for local and remote files, respectively
 	Papa.LocalChunkSize = 1024 * 1024 * 10;	// 10 MB
 	Papa.RemoteChunkSize = 1024 * 1024 * 5;	// 5 MB
-	Papa.DefaultDelimiter = ",";			// Used if not specified and detection fails
+	Papa.DefaultDelimiter = ',';			// Used if not specified and detection fails
 
 	// Exposed for testing and development only
 	Papa.Parser = Parser;
@@ -62,11 +62,11 @@
 
 			this.each(function(idx)
 			{
-				var supported = $(this).prop('tagName').toUpperCase() == "INPUT"
-								&& $(this).attr('type').toLowerCase() == "file"
+				var supported = $(this).prop('tagName').toUpperCase() === 'INPUT'
+								&& $(this).attr('type').toLowerCase() === 'file'
 								&& global.FileReader;
 
-				if (!supported || !this.files || this.files.length == 0)
+				if (!supported || !this.files || this.files.length === 0)
 					return true;	// continue to next input element
 
 				for (var i = 0; i < this.files.length; i++)
@@ -85,7 +85,7 @@
 
 			function parseNextFile()
 			{
-				if (queue.length == 0)
+				if (queue.length === 0)
 				{
 					if (isFunction(options.complete))
 						options.complete();
@@ -100,12 +100,12 @@
 
 					if (typeof returned === 'object')
 					{
-						if (returned.action == "abort")
+						if (returned.action === 'abort')
 						{
-							error("AbortError", f.file, f.inputElem, returned.reason);
+							error('AbortError', f.file, f.inputElem, returned.reason);
 							return;	// Aborts all queued files immediately
 						}
-						else if (returned.action == "skip")
+						else if (returned.action === 'skip')
 						{
 							fileComplete();	// parse the next file in the queue, if any
 							return;
@@ -113,7 +113,7 @@
 						else if (typeof returned.config === 'object')
 							f.instanceConfig = $.extend(f.instanceConfig, returned.config);
 					}
-					else if (returned == "skip")
+					else if (returned === 'skip')
 					{
 						fileComplete();	// parse the next file in the queue, if any
 						return;
@@ -221,7 +221,7 @@
 
 	function JsonToCsv(_input, _config)
 	{
-		var _output = "";
+		var _output = '';
 		var _fields = [];
 
 		// Default configuration
@@ -230,10 +230,10 @@
 		var _quotes = false;
 
 		/** delimiting character */
-		var _delimiter = ",";
+		var _delimiter = ',';
 
 		/** newline character(s) */
-		var _newline = "\r\n";
+		var _newline = '\r\n';
 
 		unpackConfig();
 
@@ -263,14 +263,14 @@
 									: objectKeys(_input.data[0]);
 
 				if (!(_input.data[0] instanceof Array) && typeof _input.data[0] !== 'object')
-					_input.data = [_input.data];	// handles input like [1,2,3] or ["asdf"]
+					_input.data = [_input.data];	// handles input like [1,2,3] or ['asdf']
 			}
 
 			return serialize(_input.fields || [], _input.data || []);
 		}
 
 		// Default (any valid paths should return before this)
-		throw "exception: Unable to serialize unrecognized input";
+		throw 'exception: Unable to serialize unrecognized input';
 
 
 		function unpackConfig()
@@ -279,8 +279,8 @@
 				return;
 
 			if (typeof _config.delimiter === 'string'
-				&& _config.delimiter.length == 1
-				&& Papa.BAD_DELIMITERS.indexOf(_config.delimiter) == -1)
+				&& _config.delimiter.length === 1
+				&& Papa.BAD_DELIMITERS.indexOf(_config.delimiter) === -1)
 			{
 				_delimiter = _config.delimiter;
 			}
@@ -308,7 +308,7 @@
 		/** The double for loop that iterates the data and writes out a CSV string including header row */
 		function serialize(fields, data)
 		{
-			var csv = "";
+			var csv = '';
 
 			if (typeof fields === 'string')
 				fields = JSON.parse(fields);
@@ -354,8 +354,8 @@
 		/** Encloses a value around quotes if needed (makes a value safe for CSV insertion) */
 		function safe(str, col)
 		{
-			if (typeof str === "undefined" || str === null)
-				return "";
+			if (typeof str === 'undefined' || str === null)
+				return '';
 
 			str = str.toString().replace(/"/g, '""');
 
@@ -363,8 +363,8 @@
 							|| (_quotes instanceof Array && _quotes[col])
 							|| hasAny(str, Papa.BAD_DELIMITERS)
 							|| str.indexOf(_delimiter) > -1
-							|| str.charAt(0) == ' '
-							|| str.charAt(str.length - 1) == ' ';
+							|| str.charAt(0) === ' '
+							|| str.charAt(str.length - 1) === ' ';
 
 			return needsQuotes ? '"' + str + '"' : str;
 		}
@@ -386,7 +386,7 @@
 		this._finished = false;
 		this._input = null;
 		this._baseIndex = 0;
-		this._partialLine = "";
+		this._partialLine = '';
 		this._rowCount = 0;
 		this._start = 0;
 		this._nextChunk = null;
@@ -411,15 +411,15 @@
 
 			// Rejoin the line we likely just split in two by chunking the file
 			var aggregate = this._partialLine + chunk;
-			this._partialLine = "";
+			this._partialLine = '';
 
 			var results = this._handle.parse(aggregate, this._baseIndex, !this._finished);
-			
+
 			if (this._handle.paused() || this._handle.aborted())
 				return;
-			
+
 			var lastIndex = results.meta.cursor;
-			
+
 			if (!this._finished)
 			{
 				this._partialLine = aggregate.substring(lastIndex - this._baseIndex);
@@ -531,24 +531,25 @@
 			}
 
 			xhr = new XMLHttpRequest();
-			
+
 			if (this._config.withCredentials)
 			{
 				xhr.withCredentials = this._config.withCredentials;
 			}
+
 			if (!IS_WORKER)
 			{
 				xhr.onload = bindFunction(this._chunkLoaded, this);
 				xhr.onerror = bindFunction(this._chunkError, this);
 			}
 
-			xhr.open("GET", this._input, !IS_WORKER);
-			
+			xhr.open('GET', this._input, !IS_WORKER);
+
 			if (this._config.chunkSize)
 			{
 				var end = this._start + this._config.chunkSize - 1;	// minus one because byte range is inclusive
-				xhr.setRequestHeader("Range", "bytes="+this._start+"-"+end);
-				xhr.setRequestHeader("If-None-Match", "webkit-no-cache"); // https://bugs.webkit.org/show_bug.cgi?id=82672
+				xhr.setRequestHeader('Range', 'bytes='+this._start+'-'+end);
+				xhr.setRequestHeader('If-None-Match', 'webkit-no-cache'); // https://bugs.webkit.org/show_bug.cgi?id=82672
 			}
 
 			try {
@@ -558,7 +559,7 @@
 				this._chunkError(err.message);
 			}
 
-			if (IS_WORKER && xhr.status == 0)
+			if (IS_WORKER && xhr.status === 0)
 				this._chunkError();
 			else
 				this._start += this._config.chunkSize;
@@ -587,8 +588,8 @@
 
 		function getFileSize(xhr)
 		{
-			var contentRange = xhr.getResponseHeader("Content-Range");
-			return parseInt(contentRange.substr(contentRange.lastIndexOf("/") + 1));
+			var contentRange = xhr.getResponseHeader('Content-Range');
+			return parseInt(contentRange.substr(contentRange.lastIndexOf('/') + 1));
 		}
 	}
 	NetworkStreamer.prototype = Object.create(ChunkStreamer.prototype);
@@ -724,7 +725,7 @@
 					processResults();
 
 					// It's possbile that this line was empty and there's no row here after all
-					if (_results.data.length == 0)
+					if (_results.data.length === 0)
 						return;
 
 					_stepCounter += results.data.length;
@@ -800,21 +801,21 @@
 			_results.meta.aborted = true;
 			if (isFunction(_config.complete))
 				_config.complete(_results);
-			_input = "";
+			_input = '';
 		};
 
 		function processResults()
 		{
 			if (_results && _delimiterError)
 			{
-				addError("Delimiter", "UndetectableDelimiter", "Unable to auto-detect delimiting character; defaulted to '"+Papa.DefaultDelimiter+"'");
+				addError('Delimiter', 'UndetectableDelimiter', 'Unable to auto-detect delimiting character; defaulted to \''+Papa.DefaultDelimiter+'\'');
 				_delimiterError = false;
 			}
 
 			if (_config.skipEmptyLines)
 			{
 				for (var i = 0; i < _results.data.length; i++)
-					if (_results.data[i].length == 1 && _results.data[i][0] == "")
+					if (_results.data[i].length === 1 && _results.data[i][0] === '')
 						_results.data.splice(i--, 1);
 			}
 
@@ -826,7 +827,7 @@
 
 		function needsHeaderRow()
 		{
-			return _config.header && _fields.length == 0;
+			return _config.header && _fields.length === 0;
 		}
 
 		function fillHeaderFields()
@@ -853,9 +854,9 @@
 					if (_config.dynamicTyping)
 					{
 						var value = _results.data[i][j];
-						if (value == "true" || value == "TRUE")
+						if (value === 'true' || value === 'TRUE')
 							_results.data[i][j] = true;
-						else if (value == "false" || value == "FALSE")
+						else if (value === 'false' || value === 'FALSE')
 							_results.data[i][j] = false;
 						else
 							_results.data[i][j] = tryParseFloat(value);
@@ -865,9 +866,9 @@
 					{
 						if (j >= _fields.length)
 						{
-							if (!row["__parsed_extra"])
-								row["__parsed_extra"] = [];
-							row["__parsed_extra"].push(_results.data[i][j]);
+							if (!row['__parsed_extra'])
+								row['__parsed_extra'] = [];
+							row['__parsed_extra'].push(_results.data[i][j]);
 						}
 						else
 							row[_fields[j]] = _results.data[i][j];
@@ -878,9 +879,9 @@
 				{
 					_results.data[i] = row;
 					if (j > _fields.length)
-						addError("FieldMismatch", "TooManyFields", "Too many fields: expected " + _fields.length + " fields but parsed " + j, i);
+						addError('FieldMismatch', 'TooManyFields', 'Too many fields: expected ' + _fields.length + ' fields but parsed ' + j, i);
 					else if (j < _fields.length)
-						addError("FieldMismatch", "TooFewFields", "Too few fields: expected " + _fields.length + " fields but parsed " + j, i);
+						addError('FieldMismatch', 'TooFewFields', 'Too few fields: expected ' + _fields.length + ' fields but parsed ' + j, i);
 				}
 			}
 
@@ -891,7 +892,7 @@
 
 		function guessDelimiter(input)
 		{
-			var delimChoices = [",", "\t", "|", ";", Papa.RECORD_SEP, Papa.UNIT_SEP];
+			var delimChoices = [',', '\t', '|', ';', Papa.RECORD_SEP, Papa.UNIT_SEP];
 			var bestDelim, bestDelta, fieldCountPrevRow;
 
 			for (var i = 0; i < delimChoices.length; i++)
@@ -947,13 +948,13 @@
 
 			var r = input.split('\r');
 
-			if (r.length == 1)
+			if (r.length === 1)
 				return '\n';
 
 			var numWithN = 0;
 			for (var i = 0; i < r.length; i++)
 			{
-				if (r[i][0] == '\n')
+				if (r[i][0] === '\n')
 					numWithN++;
 			}
 
@@ -996,13 +997,13 @@
 		// Delimiter must be valid
 		if (typeof delim !== 'string'
 			|| Papa.BAD_DELIMITERS.indexOf(delim) > -1)
-			delim = ",";
+			delim = ',';
 
 		// Comment character must be valid
 		if (comments === delim)
-			throw "Comment character same as delimiter";
+			throw 'Comment character same as delimiter';
 		else if (comments === true)
-			comments = "#";
+			comments = '#';
 		else if (typeof comments !== 'string'
 			|| Papa.BAD_DELIMITERS.indexOf(comments) > -1)
 			comments = false;
@@ -1019,7 +1020,7 @@
 		{
 			// For some reason, in Chrome, this speeds things up (!?)
 			if (typeof input !== 'string')
-				throw "Input must be a string";
+				throw 'Input must be a string';
 
 			// We don't need to compute some of these every time parse() is called,
 			// but having them in a more local scope seems to perform better
@@ -1047,7 +1048,7 @@
 						cursor += newline.length;
 					else if (ignoreLastRow)
 						return returnable();
-					if (comments && row.substr(0, commentsLen) == comments)
+					if (comments && row.substr(0, commentsLen) === comments)
 						continue;
 					if (stepIsFunction)
 					{
@@ -1075,7 +1076,7 @@
 			for (;;)
 			{
 				// Field has opening quote
-				if (input[cursor] == '"')
+				if (input[cursor] === '"')
 				{
 					// Start our search for the closing quote where the cursor is
 					var quoteSearch = cursor;
@@ -1093,9 +1094,9 @@
 							if (!ignoreLastRow) {
 								// No closing quote... what a pity
 								errors.push({
-									type: "Quotes",
-									code: "MissingQuotes",
-									message: "Quoted field unterminated",
+									type: 'Quotes',
+									code: 'MissingQuotes',
+									message: 'Quoted field unterminated',
 									row: data.length,	// row has yet to be inserted
 									index: cursor
 								});
@@ -1111,13 +1112,13 @@
 						}
 
 						// If this quote is escaped, it's part of the data; skip it
-						if (input[quoteSearch+1] == '"')
+						if (input[quoteSearch+1] === '"')
 						{
 							quoteSearch++;
 							continue;
 						}
 
-						if (input[quoteSearch+1] == delim)
+						if (input[quoteSearch+1] === delim)
 						{
 							// Closing quote followed by delimiter
 							row.push(input.substring(cursor, quoteSearch).replace(/""/g, '"'));
@@ -1140,7 +1141,7 @@
 								if (aborted)
 									return returnable();
 							}
-							
+
 							if (preview && data.length >= preview)
 								return returnable(true);
 
@@ -1154,7 +1155,7 @@
 				// Comment found at start of new line
 				if (comments && row.length === 0 && input.substr(cursor, commentsLen) === comments)
 				{
-					if (nextNewline == -1)	// Comment ends at EOF
+					if (nextNewline === -1)	// Comment ends at EOF
 						return returnable();
 					cursor = nextNewline + newlineLen;
 					nextNewline = input.indexOf(newline, cursor);
@@ -1291,7 +1292,7 @@
 				'You need to set Papa.SCRIPT_PATH manually.'
 			);
 		var workerUrl = Papa.SCRIPT_PATH || AUTO_SCRIPT_PATH;
-		// Append "papaworker" to the search string to tell papaparse that this is our worker.
+		// Append 'papaworker' to the search string to tell papaparse that this is our worker.
 		workerUrl += (workerUrl.indexOf('?') !== -1 ? '&' : '?') + 'papaworker';
 		var w = new global.Worker(workerUrl);
 		w.onmessage = mainThreadReceivedMessage;
@@ -1356,7 +1357,7 @@
 	}
 
 	function notImplemented() {
-		throw "Not implemented.";
+		throw 'Not implemented.';
 	}
 
 	/** Callback when worker thread receives a message */