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ar-async
Advanced tools
Readme
A Node library for asynchronously reading and writing Unix archive files. Currents supprts basic ar
format, as well as BSD and GNU variants.
###ArReader
var ar = require('ar'),
fs = require('fs'),
path = require('path');
// extracts all of the files in "some_archive.a" to the folder "./output".
var outputDir = "./output";
if (!fs.existsSync(outputDir)) fs.mkdirSync(outputDir);
var reader = new ar.ArReader("some_archive.a");
reader.on("open", function() {
// archive opened
});
reader.on("entry", function(entry, next) {
// entry is an instance of ArEntry
var name = entry.fileName();
entry.fileData()
.pipe(fs.createWriteStream(name))
.on("finish", next);
});
reader.on("error", function(err) {
// archive reading error
});
reader.on("end", function() {
// archive parsing ended
});
reader.on("close", function() {
// archive closed
});
ArReader automatically detects and handles BSD and GNU variant formats. All events are optional, so you only have to listen for the ones you want.
###ArWriter
var ar = require('ar'),
fs = require('fs'),
path = require('path');
// write files into a new ar archive at "some_archive.a"
// in the case, specifies gnu variant format for long filenames
var writer = new ar.ArWriter("./some_archive.a", {variant:"gnu"});
writer.writeEntries([
"./some_file",
"./some_other_file",
"./yet_another_file"
], function() {
// optional callback after completion
});
writer.on("open", function() {
// archive opened
});
writer.on("entry", function(entry) {
// entry is an instance of ArEntry
// signifies an entry has been written
// unlike ArReader, there is no next function
});
writer.on("error", function(err) {
// archive writing error
});
writer.on("finish", function() {
// archive writing ended and closed
});
ArWriter by default will truncate filenames at 16 bytes long. For long file names, specify a variant format, like done above. Currently "GNU" and "BSD" are supported. Additionally, you can specify "uid", "gid", and "mode" number values in the options json; they will override the values for each file written. All events are optional, so you only have to listen for the ones you want.
###ArEntry See ar.js for inline ArEntry documention, but here are the key APIs
###License Licensed under the MIT License (MIT)
node-ar-async Copyright (c) 2014 Jason Robitaille. https://github.com/JayCanuck/node-ar-async
Based on, and including code from, from node-ar, Copyright (c) 2013 John Vilk. https://github.com/jvilk/node-ar
FAQs
Unknown package
The npm package ar-async receives a total of 12,200 weekly downloads. As such, ar-async popularity was classified as popular.
We found that ar-async demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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