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32 var pubsuffix = require('./pubsuffix');
34 // Gives the permutation of all possible domainMatch()es of a given domain. The
35 // array is in shortest-to-longest order. Handy for indexing.
36 function permuteDomain (domain) {
37 var pubSuf = pubsuffix.getPublicSuffix(domain);
41 if (pubSuf == domain) {
45 var prefix = domain.slice(0, -(pubSuf.length + 1)); // ".example.com"
46 var parts = prefix.split('.').reverse();
48 var permutations = [cur];
49 while (parts.length) {
50 cur = parts.shift() + '.' + cur;
51 permutations.push(cur);
56 exports.permuteDomain = permuteDomain;