69 lines
1.9 KiB
JavaScript
69 lines
1.9 KiB
JavaScript
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var escapeRegExp = require('escape-string-regexp');
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var startsWithWildcardRegExp = /^\*\./;
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var endsWithWildcardRegExp = /\.\*$/;
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var trailingSlashesRegExp = /\/.*$/;
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var portRegExp = /:(\d+)$/;
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var protocolRegExp = /^(\w+):\/\//;
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var wildcardRegExp = /\\\.\\\*/g;
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function parseUrl (url) {
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if (!url || typeof url !== 'string')
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return null;
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var protocol = url.match(protocolRegExp);
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protocol = protocol ? protocol[1] : null;
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url = url.replace(protocolRegExp, '');
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url = url.replace(trailingSlashesRegExp, '');
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var port = url.match(portRegExp);
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port = port ? parseInt(port[1], 10) : null;
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url = url.replace(portRegExp, '');
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return { protocol, url, port };
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}
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function prepareRule (url) {
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var rule = parseUrl(url);
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if (rule) {
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rule.url = rule.url.replace(startsWithWildcardRegExp, '.');
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rule.url = rule.url.replace(endsWithWildcardRegExp, '.');
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}
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return rule;
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}
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function urlMatchRule (sourceUrl, rule) {
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if (!sourceUrl || !rule)
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return false;
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var matchByProtocols = !rule.protocol || !sourceUrl.protocol || rule.protocol === sourceUrl.protocol;
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var matchByPorts = !rule.port || sourceUrl.port === rule.port;
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var domainRequiredBeforeRule = rule.url.startsWith('.');
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var domainRequiredAfterRule = rule.url.endsWith('.');
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var regExStr = '^';
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if (domainRequiredBeforeRule)
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regExStr += '.+';
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regExStr += escapeRegExp(rule.url).replace(wildcardRegExp, '\\..*');
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if (domainRequiredAfterRule)
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regExStr += '.+';
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regExStr += '$';
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return new RegExp(regExStr).test(sourceUrl.url) && matchByProtocols && matchByPorts;
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}
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module.exports = function (url, rules) {
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if (!Array.isArray(rules))
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rules = [rules];
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return rules.some(rule => urlMatchRule(parseUrl(url), prepareRule(rule)));
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}
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