buffer-splice

Splice a buffer.. like array and string splice

Installation

npm i --save buffer-splice

Usage

splice(buffer, [start], [count], [...insert])

Splice a buffer

• @param {Buffer|Object} buffer input buffer or opts: { buffer: }
• @param {Integer} [start] default: buffer.length
• @param {Integer} [count] default: buffer.length
• @param {Buffer,String,Number,Object,Array} [...items] items to insert into buffer (will be casted to buffer)
• @param {Integer} [count] default: buffer.length
• @return {Buffer} modified buffer of removed buffer if opts is passed

Examples

var splice = require('buffer-splice')

var buffer = new Buffer('helloworld')

splice(buffer) // new Buffer('helloworld')

splice(buffer, 5, 5) // new Buffer('hello')

splice(buffer, 5, 5, new Buffer("FOO")) // new Buffer('helloFOO')

// Want the removed buffer too?
// Pass `opts` and splice will work more like `Array.splice`
// Unlike Arrays, Buffers cannot be modified directly.
// When you pass an `opts` w/ `buffer` property `buffer-splice` can update the `buffer` reference.

var opts = {
  buffer: buffer
}
var removed = splice(opts, 1) // removed: new Buffer('elloworld')
opts.buffer // modified: new Buffer('h') // ref was changed

More Examples

// buffer-splice supports all types for items,
// it uses cast-buffer to cast `items` to buffers

splice(buffer, 5, 5) // new Buffer('hello')

splice(buffer, 5, 5, new Buffer("FOO")) // new Buffer('helloFOO')

splice(buffer, 5, 5, "FOO") // new Buffer('helloFOO')

splice(buffer, 5, 5, 10) // new Buffer('hello10')

splice(buffer, 5, 5, [ 'array' ]) // new Buffer('hello["array"]')

splice(buffer, 5, 5, { object: true }) // new Buffer('hello{"object":true}')

splice(buffer, 5, 5, 'FOO', 10, 'QUX') // new Buffer('helloFOO10QUX')

License

MIT