A bog standard JavaScript CSV parser. Putting it here so I don't need to keep rewriting it or remembering where I put the last one. Usage self-explanatory, will break if you throw weird shit at it (cells with newlines in them, that sort of thing)

CSV Parser

CSVParser = function ( options ) {
	var defaults, delimiter, rowDelimiter, qualifier, qualified, unqualified;

	options = options || {};

	defaults = {
		delimiter: ',',
		rowDelimiter: '\n',
		qualifier: '"'
	};

	delimiter = options.delimiter || defaults.delimiter;
	this._rowDelimiter = options.rowDelimiter || defaults.rowDelimiter;
	qualifier = options.qualifier || defaults.qualifier;

	qualified = qualifier + '([^' + qualifier + ']*)' + qualifier;
	unqualified = '([^' + delimiter + ']*)';

	this._pattern = new RegExp( '(?:' + qualified + '|' + unqualified + ')(?:' + delimiter + '|$)', 'g' );
};

CSVParser.prototype = {
	parse: function ( data ) {
		var rowStrings, rowString, numRows, rows = [], row, rowNum, match, cell;

		rowStrings = data.split( this._rowDelimiter );

		numRows = rowStrings.length;
		for ( rowNum=0; rowNum<numRows; rowNum+=1 ) {
			var i=0;

			this._pattern.lastIndex = 0;

			rowString = rowStrings[ rowNum ];
			row = rows[ rowNum ] = [];

			match = this._pattern.exec( rowString );

			while ( match ) {
				cell = match[1] || match[2];
				row[ row.length ] = cell;

				if ( this._pattern.lastIndex < rowString.length ) {
					match = this._pattern.exec( rowString );
				} else {
					match = false;
				}
			}
		}

		return rows;
	}
};