three/src/loaders/LoaderUtils.js

JavaScript 3D library

class LoaderUtils {

	static decodeText( array ) {

		if ( typeof TextDecoder !== 'undefined' ) {

			return new TextDecoder().decode( array );

		}

		// Avoid the String.fromCharCode.apply(null, array) shortcut, which
		// throws a "maximum call stack size exceeded" error for large arrays.

		let s = '';

		for ( let i = 0, il = array.length; i < il; i ++ ) {

			// Implicitly assumes little-endian.
			s += String.fromCharCode( array[ i ] );

		}

		try {

			// merges multi-byte utf-8 characters.

			return decodeURIComponent( escape( s ) );

		} catch ( e ) { // see #16358

			return s;

		}

	}

	static extractUrlBase( url ) {

		const index = url.lastIndexOf( '/' );

		if ( index === - 1 ) return './';

		return url.substr( 0, index + 1 );

	}

}

export { LoaderUtils };