CODEWITHSUNDEEP
javascriptcharacter-encodinggbk
Vincent Thibault
Vincent Thibault

Reputation: 611

GBK Encode/Decode Charset

I am receiving a binary packet from a server containing the following:

var data = new Uint8Array([0xB2, 0xE2, 0xCA, 0xD4, 0x74, 0x65, 0x73, 0x74, 0x31, 0x32, 0x33]);

I know it's a GBK charset and I am using the TextDecoder/TextEncoder API to read it back:

var str = TextDecoder('gbk').decode(data);
// result: 测试test123

Now, the question : How to do the opposite ?

I tested :

var data = TextEncoder().encode(str);
// but it doesn't match

Some handed compression:

(str.charCodeAt(0) & 0xff) | ((str.charCodeAt(1) >>> 8) & 0xff)
// but yeah, not need to be pro to know it can't works.

Does someone know a way to do the reverse operation ? Thank you in advance.

Upvotes: 2

Views: 3651

Answers (1)

Vincent Thibault
Vincent Thibault

Reputation: 611

Solved.

I used the shim: https://github.com/inexorabletash/text-encoding and commented a condition part in the TextEncoder constructor to allow other charset.

Here is an example:

if (this._encoding === null /*|| (this._encoding.name !== 'utf-8' &&
                                                                    this._encoding.name !== 'utf-16le' &&
                                                                    this._encoding.name !== 'utf-16be')*/)

throw new TypeError('Unknown encoding: ' + opt_encoding);

Upvotes: 1

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