Package Exports

pull-block

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (pull-block) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

pull-block

transform input into equally-sized chunks as output

pull-stream version of block-stream.

Installation

With npm do:

> npm install pull-block

Example

var block = require('pull-block')
var pull = require('pull-stream')
var toPull = require('stream-to-pull-stream')

pull(
  toPull.source(process.stdin),
  block({ size: 16, zeroPadding: true }),
  pull.through(function (buf) {
    var str = buf.toString().replace(/[\x00-\x1f]/g, chr)
    console.log('buf[' + buf.length + ']=' + str)
  }),
  pull.drain()
)

function chr (s) { return '\\x' + pad(s.charCodeAt(0).toString(16), 2) }
function pad (s, n) { return Array(n - s.length + 1).join('0') + s }

$ echo {c,d,f}{a,e,i,o,u}{t,g,r} | node example/stream.js
buf[16]=cat cag car cet
buf[16]=ceg cer cit cig
buf[16]=cir cot cog cor
buf[16]=cut cug cur dat
buf[16]=dag dar det deg
buf[16]=der dit dig dir
buf[16]=dot dog dor dut
buf[16]=dug dur fat fag
buf[16]=far fet feg fer
buf[16]=fit fig fir fot
buf[16]=fog for fut fug
buf[16]=fur\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00

Methods

var block = require('pull-block')

var b = block(opts)

var b = block(size, opts)

Create a new through stream b that outputs chunks of length size or opts.size.

When opts.zeroPadding is false, do not zero-pad the last chunk.

When opts.emitEmpty is true (default is false), emit a zero-sized buffer when the source is empty or only feeds in zero-length buffers.

License

MIT