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rOACCT/node_modules/clean-css/lib/reader/is-allowed-resource.js
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is-allowed-resource.js
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			var path = require('path');
			var url = require('url');

			var isRemoteResource = require('../utils/is-remote-resource');
			var hasProtocol = require('../utils/has-protocol');

			var HTTP_PROTOCOL = 'http:';

			function isAllowedResource(uri, isRemote, rules) {
			var match;
			var absoluteUri;
			var allowed = !isRemote;
			var rule;
			var isNegated;
			var normalizedRule;
			var i;

			if (rules.length === 0) {
			return false;
			}

			if (isRemote && !hasProtocol(uri)) {
			uri = HTTP_PROTOCOL + uri;
			}

			match = isRemote
			? url.parse(uri).host
			: uri;

			absoluteUri = isRemote
			? uri
			: path.resolve(uri);

			for (i = 0; i < rules.length; i++) {
			rule = rules[i];
			isNegated = rule[0] == '!';
			normalizedRule = rule.substring(1);

			if (isNegated && isRemote && isRemoteRule(normalizedRule)) {
			allowed = allowed && !isAllowedResource(uri, true, [normalizedRule]);
			} else if (isNegated && !isRemote && !isRemoteRule(normalizedRule)) {
			allowed = allowed && !isAllowedResource(uri, false, [normalizedRule]);
			} else if (isNegated) {
			allowed = allowed && true;
			} else if (rule == 'all') {
			allowed = true;
			} else if (isRemote && rule == 'local') {
			allowed = allowed \|\| false;
			} else if (isRemote && rule == 'remote') {
			allowed = true;
			} else if (!isRemote && rule == 'remote') {
			allowed = false;
			} else if (!isRemote && rule == 'local') {
			allowed = true;
			} else if (rule === match) {
			allowed = true;
			} else if (rule === uri) {
			allowed = true;
			} else if (isRemote && absoluteUri.indexOf(rule) === 0) {
			allowed = true;
			} else if (!isRemote && absoluteUri.indexOf(path.resolve(rule)) === 0) {
			allowed = true;
			} else if (isRemote != isRemoteRule(normalizedRule)) {
			allowed = allowed && true;
			} else {
			allowed = false;
			}
			}

			return allowed;
			}

			function isRemoteRule(rule) {
			return isRemoteResource(rule) \|\| url.parse(HTTP_PROTOCOL + '//' + rule).host == rule;
			}

			module.exports = isAllowedResource;