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Update parser.js #11

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830f59b
Update parser.js
beraadim Jun 16, 2021
7854f36
Update parser.js
beraadim Jun 17, 2021
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21 changes: 18 additions & 3 deletions src/parser.js
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Original file line number Diff line number Diff line change
Expand Up @@ -40,11 +40,26 @@ export default class Parser extends Writable {
this.state = STATE.TEXT;
this.buffer = '';
this.pos = 0;
this.detectedEncoding = 'utf8';
this.tagType = TAG_TYPE.NONE;
}

_write(chunk, encoding, done) {
chunk = typeof chunk !== 'string' ? chunk.toString() : chunk;

if(typeof chunk !== 'string' && this.pos == 0){
if(chunk[0] == 0xff && chunk[1] == 0xfe) this.detectedEncoding = 'utf16le';
if(chunk[0] == 0xfe && chunk[1] == 0xff) this.detectedEncoding = 'utf16be';
}
let useEncoding = this.detectedEncoding;

//Node does not have built in support for big endian. But we can use swap16 to swap byte pairs to a utf16le
if(typeof chunk !== 'string' && this.detectedEncoding === 'utf16be'){
chunk.swap16();
useEncoding = 'utf16le';
}


chunk = typeof chunk !== 'string' ? chunk.toString(useEncoding) : chunk;
for (let i = 0; i < chunk.length; i++) {
let c = chunk[i];
let prev = this.buffer[this.pos - 1];
Expand Down Expand Up @@ -108,10 +123,10 @@ export default class Parser extends Writable {
let { name, attributes } = this._parseTagString(tag);

if (this.tagType & TAG_TYPE.OPENING == TAG_TYPE.OPENING) {
this.emit(EVENTS.OPEN_TAG, name, attributes);
this.emit(EVENTS.OPEN_TAG, name.trim(), attributes);
}
if (this.tagType & TAG_TYPE.CLOSING == TAG_TYPE.CLOSING) {
this.emit(EVENTS.CLOSE_TAG, name, attributes);
this.emit(EVENTS.CLOSE_TAG, name.trim(), attributes);
}

this.isCloseTag = false;
Expand Down