streader

Streader

A simple String Reader for a convenient way to read through strings

Basic Overview

Streader is a String Reader which simplifies the way we read through strings.

Library can be used both in Node.js and directly in Browser. It is well-documented and completely covered with test specs (excluding webpack bundling definitions and expressions).

If you want to add some features or to suggest any idea, feel free ? contributions are always welcome.

How to Install

Using NPM

To use Streader with NPM simply call:

npm install --save streader

In Browser

To use Streader directly in browser simply download this repository and copy dist/streader.js into your project. Next, include it on your .html page:

<script src="path/to/your/js/streader.js"></script>

Get Started

You are able to use Streader as the importable npm package or directly in browser.

In Node.js

import Streader from "streader";
 
var reader = new Streader("example");
 
while( !reader.eof() ) {
 var char = reader.read();
 // Do something with each char
}

In Browser

<script>
var reader = new Streader("example");
 
while( !reader.eof() ) {
 var char = reader.read();
 // Do something with each char
}
</script> 

API

read(count)

Reads the next characters. Count - optional count of characters to read

var reader = new Streader("Example");
 
var chars = reader.read(7); // chars => "Example"

peek(count, offset)

Reads the next character without advancing the cursor. Count - optional count of characters to read; Offset - optional offset to start read at

var reader = new Streader("Example");
 
var chars = reader.peek(3, 2); // chars => "amp"

skip(count)

Skips the next characters. Count - optional count of characters to read.

var reader = new Streader("Example");
 
var skipped = reader.skip(3); // skipped => 3

readPattern(pattern)

Reads characters that match either string or regexp pattern.

var reader = new Streader("Pattern Example");
 
var chars = reader.readPattern("Pattern"); // chars => "Pattern"
var index = reader.getIndex(); // index => 7
 
var chars = reader.readPattern(/\s+/); // chars => " "
var index = reader.getIndex(); // index => 8

peekPattern(pattern, offset)

Reads characters that match either string or regexp pattern without advancing the cursor.

var reader = new Streader("Pattern Example");
 
var chars = reader.peekPattern("Ex", 8); // chars => "Ex"
var index = reader.getIndex(); // index => 0
 
var chars = reader.peekPattern(/\w+/); // chars => "Pattern"
var index = reader.getIndex(); // index => 0

skipPattern(pattern)

Skips characters that match either string or regexp.

var reader = new Streader("Pattern Example");
 
var skipped = reader.skipPattern("Pattern"); // skipped => 7
 
var skipped = reader.skipPattern(/\s|\n/); // skipped => 1

eof()

Checks if we're at the end of the source

var reader = new Streader("example");
reader.read(100); // Read all characters
 
var isEof = reader.eof(); // isEof => true

reset()

Resets current cursor position

var reader = new Streader("example");
reader.read(5); // Read 5 characters for example
 
reader.reset();
 
var index = reader.getIndex(); // index => 0

getSource()

Gets the current reader's source string.

var reader = new Streader("example");
 
var source = reader.getSource(); // source => "example"

getIndex()

Gets the current index of the cursor.

var reader = new Streader("example");
reader.read(5); // shift cursor for example
 
var index = reader.getIndex(); // index => 5

setSource(text)

Loads the new text source to StringReader. Method resets current cursor data. Useful for deferred read.

var reader = new Streader("old");
reader.read(2); // shift cursor for example
 
reader.setSource("new");
 
var source = reader.getSource(); // source => "new"
var index = reader.getIndex(); // index => 0

Contributing to Streader

Contributions are always welcome. Before contributing please read the code of conduct & search the issue tracker (your issue may have already been discussed or fixed).

To contribute, follow next steps:

• Fork Streader
• Commit your changes
• Open a Pull Request.

Feature Requests

Feature requests should be submitted in the issue tracker, with a description of the expected behavior & use case, where they?ll remain closed until sufficient interest (e.g. ? reactions). Before submitting a feature request, please search for similar ones in the closed issues.

License

Released under the MIT License