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+// Copyright 2009 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+/**
+ * Creates a CSV lines parser.
+ */
+function CsvParser() {
+};
+
+
+/**
+ * A regex for matching a CSV field.
+ * @private
+ */
+CsvParser.CSV_FIELD_RE_ = /^"((?:[^"]|"")*)"|([^,]*)/;
+
+
+/**
+ * A regex for matching a double quote.
+ * @private
+ */
+CsvParser.DOUBLE_QUOTE_RE_ = /""/g;
+
+
+/**
+ * Parses a line of CSV-encoded values. Returns an array of fields.
+ *
+ * @param {string} line Input line.
+ */
+CsvParser.prototype.parseLine = function(line) {
+ var fieldRe = CsvParser.CSV_FIELD_RE_;
+ var doubleQuoteRe = CsvParser.DOUBLE_QUOTE_RE_;
+ var pos = 0;
+ var endPos = line.length;
+ var fields = [];
+ if (endPos > 0) {
+ do {
+ var fieldMatch = fieldRe.exec(line.substr(pos));
+ if (typeof fieldMatch[1] === "string") {
+ var field = fieldMatch[1];
+ pos += field.length + 3; // Skip comma and quotes.
+ fields.push(field.replace(doubleQuoteRe, '"'));
+ } else {
+ // The second field pattern will match anything, thus
+ // in the worst case the match will be an empty string.
+ var field = fieldMatch[2];
+ pos += field.length + 1; // Skip comma.
+ fields.push(field);
+ }
+ } while (pos <= endPos);
+ }
+ return fields;
+};