string-buffer

string-buffer

This is the StringBuffer class that LEON uses internally. It provides all the methods of a Node.js Buffer object, but it stores its data in a string, meaning it is portable enough to be used in the browser as well as on the server.

Usage

var StringBuffer = require('string-buffer');

or

<script src="string-buffer.js" type="text/javascript"></script>

var buffer = StringBuffer();
var secondBuffer = StringBuffer();
buffer.writeUInt8(254, 0);
secondBuffer.writeDoubleBE(232.222, 0);
buffer = StringBuffer.concat([ buffer, secondBuffer ]);
buffer
// <StringBuffer fe 40 6d 07 1a 9f be 76 c9>

You can also pass negative indices to the methods to indicate you want to read or write that many characters from the end of the line. Passing -1 as an index anywhere where you are reading data (as opposed to writing it) means "the last byte in the buffer." Passing -1 as an index where you are writing data signifies "the end of the StringBuffer, no overwriting." The reason this was done is so you can do stuff like this:

buffer.clear();
buffer.writeUInt8(5, -1);
buffer.writeUInt8(4, -1);
buffer.readUInt8(-2);
// 5
buffer.readUInt8(-1);
// 4