avalon-loader/html-loader/attributesParser.js

A single-file webpack loader for avalon.js

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
var Parser = require( 'fastparse' );

var processMatch = function ( match, strUntilValue, name, value, index ) {
	if ( !this.isRelevantTagAttr( this.currentTag, name ) ) {
		return;
	}
	this.results.push( {
		start: index + strUntilValue.length,
		length: value.length,
		value: value
	} );
};

var parser = new Parser( {
	outside: {
		'<!--.*?-->': true,
		'<![CDATA[.*?]]>': true,
		'<[!\\?].*?>': true,
		'<\/[^>]+>': true,
		'<([a-zA-Z\\-:]+)\\s*': function ( match, tagName ) {
			this.currentTag = tagName;
			return 'inside';
		}
	},
	inside: {
		'\\s+': true, // eat up whitespace
		'>': 'outside', // end of attributes
		'(([0-9a-zA-Z\\-:\.]+)\\s*=\\s*")([^"]*)"': processMatch,
		'(([0-9a-zA-Z\\-:\.]+)\\s*=\\s*\')([^\']*)\'': processMatch,
		'(([0-9a-zA-Z\\-:\.]+)\\s*=\\s*)([^\\s>]+)': processMatch
	}
} );

module.exports = function parse( html, isRelevantTagAttr ) {
	return parser.parse( 'outside', html, {
		currentTag: null,
		results: [],
		isRelevantTagAttr: isRelevantTagAttr
	} ).results;
};