@infinito/id3/src/get.js

ID3 Tag Reader/Writer

import getID3v2_2 from './get/id3.2.2.js';
import getID3v2_3 from './get/id3.2.3.js';
import getID3v2_4 from './get/id3.2.4.js';

import validID3 from './valid.js';

export default function getID3(path,buf) {
	if(typeof path!='string') {
		throw new TypeError('parameter path expects a string');
	}
	if(!(buf instanceof Uint8Array)) {
		throw new TypeError('parameter buf expects a Uint8Array buffer');
	}
	/* Detect which id3 tag to find, prefer id3v2.3 */
	try {
		var taginfo = validID3(buf.buffer);
	} catch(error) {
		throw new Error(`${path} does not contain valid id3 tags`);
	}
	switch(taginfo.ver) {
		case 4:
			return getID3v2_4(path,buf.buffer,taginfo.subver,taginfo.flags,taginfo.size);
		case 3:
			return getID3v2_3(path,buf.buffer,taginfo.subver,taginfo.flags,taginfo.size);
		case 2:
			return getID3v2_2(path,buf.buffer,taginfo.subver,taginfo.flags,taginfo.size);
		default:
			console.log(path);
			console.log(taginfo);
			console.log(new Uint8Array(buf,0,20));
			throw new Error("id3v"+taginfo.ver+"."+taginfo.subver+" not supported");
	}
}