utf8-stream

utf8-stream

buffer utf8 characters that would otherwise span chunk boundaries

example

Here we'll write some chinese characters at random byte offsets:

var utf8Stream = require('utf8-stream');
var through = require('through');

var u8 = utf8Stream();
u8.pipe(through(function (buf) {
    var s = buf.toString('utf8');
    this.queue(s.split('').join('\n') + '\n');
})).pipe(process.stdout);

u8.write(Buffer([ 0xe9, 0x81 ]));
u8.write(Buffer([ 0x99, 0xe9, 0x81, 0xa0, 0xe6 ]));
u8.write(Buffer([ 0x9c, 0xaa, 0xe4, 0xbe ]));
u8.write(Buffer([ 0x86, 0xe7, 0x9a, 0x84, 0xe4, 0xba, 0x8b ]));
u8.write(Buffer([ 0xe4, 0xbb, 0xb6 ]));
u8.end();

Inside the through(function (buf) {}), each buf will never span a utf8 multi-byte character so we can just call .toString('utf8').

output:

遙
遠
未
來
的
事
件

methods

var utf8Stream = require('utf8-stream')

var u8 = utf8Stream()

Return a through stream u8 that will never emit a chunk that spans a utf8 multi-byte character.

install

With npm do:

npm install utf8-stream

license

MIT