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Description

Buffy is a utility module for node.js that lets you easily access and manipulate many Buffers as if they were one single Buffer.

Requirements

Examples

var Buffy = require('./buffy'), inspect = require('util').inspect;

var b = new Buffy();
b.append(new Buffer([1, 4, 3, 4, 1, 1, 4]));
b.append(new Buffer([20, 10, 12]));
b.append(new Buffer([6]));
b.append(new Buffer([44, 9]));

console.log(inspect(b));
// output: <Buffy 01 04 03 04 01 01 04 14 0a 0c 06 2c 09>

console.log(b.indexOf([1, 4]));
// output: 0

console.log(b.indexOf([1, 4], 1));
// output: 5

console.log(b.indexOf([1, 4, 20, 10, 12, 6]));
// output: 5

console.log(b.indexOf([44, 9]));
// output: 11

var myBuffer = new Buffer(5);
b.copy(myBuffer, 0, 7, 12);
console.log(inspect(myBuffer));
// output: <Buffer 14 0a 0c 06 2c>

API

Properties

  • length - Returns the total length of the contents of the Buffy

Methods

  • (constructor)() - Creates and returns a new instance of a Buffy object.

  • get(Integer:index) - Boolean/Integer:byte - Retrieves a single byte at the specified index. If the index is invalid, Boolean false is returned.

  • set(Integer:index, Integer:newByteValue) - Boolean:success - Sets the byte at the specified index to the given value.

  • indexOf(Array:bytes, [Integer:start=0]) - Integer:position - Searches for the specified bytes in the Buffy at an optional starting position. Returns -1 if the bytes were not found.

  • copy(Buffer:destBuffer, [Integer:destStart=0], [Integer:sourceStart=0], [Integer:sourceEnd=buffy.length]) - (void) - Works similar to Buffer's copy().

  • append(Buffer:newBuffer) - (void) - Appends the given Buffer to the end of the Buffy.

  • GCBefore(Integer:index) - Integer:bytesRemoved - Removes any Buffers stored before the given Buffy index.

  • toString([String:encoding], [Integer:startIndex], [Integer:endIndex]) - String:result - Decodes and returns a string with the specified encoding beginning at startIndex and ending at endIndex.

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