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'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;
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