stdlib-jsWe believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.
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Standard Input
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
[Standard input][standard-streams].
bash
npm install @stdlib/streams-node-stdin
javascript
var stdin = require( '@stdlib/streams-node-stdin' );
#### stdin
[Standard input][standard-streams] as a [Readable stream][readable-stream].
javascript
var string2buffer = require( '@stdlib/buffer-from-string' );
var Buffer = require( '@stdlib/buffer-ctor' );
var data = [];
var len = 0;
stdin.on( 'readable', onReadable );
stdin.on( 'error', onError );
stdin.on( 'end', onEnd );
function onReadable() {
var chunk;
while ( true ) {
chunk = stdin.read();
if ( chunk === null ) {
break;
}
if ( typeof chunk === 'string' ) {
chunk = string2buffer( chunk );
}
data.push( chunk );
len += chunk.length;
}
}
function onError( error ) {
if ( error ) {
console.error( error.message );
}
}
function onEnd() {
data = Buffer.concat( data, len );
console.log( data.toString() );
// => '...'
}
javascript
var proc = require( 'process' );
var stdin = require( '@stdlib/streams-node-stdin' );
var stdout = require( '@stdlib/streams-node-stdout' );
// Set the encoding:
stdin.setEncoding( 'utf8' );
// Create an echo stream:
stdin.pipe( stdout );
// Push data to `stdin`:
stdin.push( 'beep' );
stdin.push( ' ' );
stdin.push( 'boop' );
stdin.push( '\n' );
// End the stream:
stdin.push( null );
// Ensure the process closes:
setTimeout( proc.exit, 1000 );
