utf-8

Encode/decode UTF8.

  • utf-8

Downloads in past

Stats

StarsIssuesVersionUpdatedCreatedSize
utf-8
2.0.06 years ago10 years agoMinified + gzip package size for utf-8 in KB

Readme

utf-8
Encode/decode UTF8.

NPM version Build status Dependency Status devDependency Status Coverage Status Code Climate Dependency Status

Usage

npm install utf-8

Encoding

A char:
UTF8.setBytesFromCharCode('é'.charCodeAt(0));
// [0xC3, 0xA9]

A string:
UTF8.setBytesFromString('1.3$ ~= 1€');
// [49, 46, 51, 36, 32, 126, 61, 32, 49, 226, 130, 172]

Decoding

A char:
String.fromCharCode(UTF8.getCharCode([0xC3, 0xA9]));
// 'é'

A string:
UTF8.getStringFromBytes([49, 46, 51, 36, 32, 126, 61, 32, 49, 226, 130, 172]);
// '1.3$ ~= 1€'

TypedArrays are welcome

As inputs :
var bytes=new Uint8Array([0xC3, 0xA9, 49, 46, 51, 36, 32, 126, 61, 32, 49, 226, 130, 172]);

// The first char
String.fromCharCode(UTF8.getCharCode(bytes));
// é

// The following string at the offset 2
UTF8.getStringFromBytes(bytes,2);
// '1.3$ ~= 1€'
As well as outputs :
var bytes=new Uint8Array(14);

// First encoding a char
UTF8.setBytesFromCharCode('é'.charCodeAt(0));

// Then encoding a string
UTF8.setBytesFromString('1.3$ ~= 1€', 2);

UTF8 encoding detection

UTF8.isNotUTF8(bytes);
// true | false
This function can prove the text contained by the given bytes is not UTF-8 (or badly encoded UTF-8 string). It's not reciprocally true, especially for short strings with which false positives are frequent.

Strict mode

If you try to encode an UTF8 string in an ArrayBuffer too short to contain the complete string, it will silently fail. To avoid this behavior, use the strict mode :
UTF8.setBytesFromString('1.3$ ~= 1€', 2, null, true);
Thanks
  • The Debian project for it's free (as freedom) russian/japanese man pages
used for real world files tests !

Stats

NPM NPM
License
MIT