48 lines
1.1 KiB
JavaScript
48 lines
1.1 KiB
JavaScript
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//
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// Simple wrapper around DataView that auto-advances the read offset and provides
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// a few common data type conversions specific to this app
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//
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DataViewReader = (function ()
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{
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function DataViewReader(data_view, offset)
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{
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this.DataView = data_view;
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this.Offset = offset;
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}
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DataViewReader.prototype.GetUInt32 = function ()
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{
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var v = this.DataView.getUint32(this.Offset, true);
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this.Offset += 4;
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return v;
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}
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DataViewReader.prototype.GetUInt64 = function ()
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{
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var v = this.DataView.getFloat64(this.Offset, true);
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this.Offset += 8;
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return v;
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}
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DataViewReader.prototype.GetStringOfLength = function (string_length)
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{
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var string = "";
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for (var i = 0; i < string_length; i++)
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{
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string += String.fromCharCode(this.DataView.getInt8(this.Offset));
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this.Offset++;
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}
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return string;
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}
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DataViewReader.prototype.GetString = function ()
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{
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var string_length = this.GetUInt32();
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return this.GetStringOfLength(string_length);
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}
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return DataViewReader;
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})();
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