File system basics

I/O Lib

Text and binary file essential I/O

by Read Write Tools Aug 21, 2015

Abstract
The iolib JavaScript library has functions for handling line-by-line text I/O, block-oriented binary I/O, and filesystem operations.

Motivation

Reading and writing text files using line-oriented functions is a common need. Handling block transfers of binary data is necessary for packed data formats.

Performing basic filesystem operations complements these two.

Features

The TextReader class has a UTF-8 aware getline method for parsing a text file one line at a time.

The TextWriter class has putline and puts methods to serialize to a text file.

The lower level BinaryReader reads a block of 8192 bytes, advancing the buffer pointer with each read.

The BinaryWriter class has methods for writing Strings, Buffers, 4-bytes, 2-bytes, and 1-byte .

The Pfile class has methods for checking if a file exists; if it's a directory or a symlink; if it's readable, writable, executable; and for assembling and accessing parts of a file's path, basename, and extension.

Installation

The iolib library may be installed directly from github or via NPM.

[user@host]# npm install iolib

Sample usage of the libary in a node.js project:

import {TextReader} from 'iolib';    
import {TextWriter} from 'iolib';    
import {BinaryReader} from 'iolib';    
import {BinaryWriter} from 'iolib';    
import {Pfile} from 'iolib';    

Metadata

Dependencies

This library depends on softlib , which should be installed side-by-side.

Module exports

ES modules	true
Common JS	false

Suitability

Browser	none
node.js	API

Availability

	Documentation	Read Write Hub
	Source code	github
	Package installation	npm

License

The iolib library is licensed under the MIT License.

MIT License

Copyright © 2022 Read Write Tools.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.