--- /dev/null
+'use strict';
+var DataReader = require('./dataReader');
+var utils = require('./utils');
+
+function StringReader(data, optimizedBinaryString) {
+ this.data = data;
+ if (!optimizedBinaryString) {
+ this.data = utils.string2binary(this.data);
+ }
+ this.length = this.data.length;
+ this.index = 0;
+}
+StringReader.prototype = new DataReader();
+/**
+ * @see DataReader.byteAt
+ */
+StringReader.prototype.byteAt = function(i) {
+ return this.data.charCodeAt(i);
+};
+/**
+ * @see DataReader.lastIndexOfSignature
+ */
+StringReader.prototype.lastIndexOfSignature = function(sig) {
+ return this.data.lastIndexOf(sig);
+};
+/**
+ * @see DataReader.readData
+ */
+StringReader.prototype.readData = function(size) {
+ this.checkOffset(size);
+ // this will work because the constructor applied the "& 0xff" mask.
+ var result = this.data.slice(this.index, this.index + size);
+ this.index += size;
+ return result;
+};
+module.exports = StringReader;