readline

_readline_

> Read a file line by line.

Install

Important. In node 10 there is a core module named readline. Please use linebyline instead, it is the same module just renamed:

Npm linebyline

``sh
npm install linebyline
`

Test


`sh
npm install .
npm test

`




What's this?

Simple streaming readline module for NodeJS. Reads a file and buffers new lines emitting a _line_ event for each line.

Usage

$3

`js
var readline = require('linebyline'),
rl = readline('./somefile.txt');
rl.on('line', function(line, lineCount, byteCount) {
// do something with the line of text
})
.on('error', function(e) {
// something went wrong
});
`

$3

As the underlying fs.createReadStream doesn't care about the specific ASCII encoding of the file, an alternative way to decode the file is by telling the readline library to retain buffer and then decoding it using a converter (e.g. iconv-lite).
`js
var readline = require('linebyline'),
rl = readline('./file-in-win1251.txt', {
retainBuffer: true //tell readline to retain buffer
});
rl.on("line", function (data,linecount){
var line = iconv.decode(data, 'win1251');
// do something with the line of converted text
});
`
##API

readLine(readingObject[, options])

$3

* readingObject - file path or stream object
* options can include:
* maxLineLength - override the default 4K buffer size (lines longer than this will not be read)
* retainBuffer` - avoid converting to String prior to emitting 'line' event; will pass raw buffer with encoded data to the callback

$3

* EventEmitter

License

BSD © Craig Brookes