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Diffstat (limited to 'tools/addon-sdk-1.12/lib/sdk/page-mod/match-pattern.js')
-rw-r--r-- | tools/addon-sdk-1.12/lib/sdk/page-mod/match-pattern.js | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/tools/addon-sdk-1.12/lib/sdk/page-mod/match-pattern.js b/tools/addon-sdk-1.12/lib/sdk/page-mod/match-pattern.js new file mode 100644 index 0000000..5c42e66 --- /dev/null +++ b/tools/addon-sdk-1.12/lib/sdk/page-mod/match-pattern.js @@ -0,0 +1,108 @@ +/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:set ts=2 sw=2 sts=2 et: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +module.metadata = { + "stability": "unstable" +}; + +const { URL } = require("../url"); + +exports.MatchPattern = MatchPattern; + +function MatchPattern(pattern) { + if (typeof pattern.test == "function") { + + // For compatibility with -moz-document rules, we require the RegExp's + // global, ignoreCase, and multiline flags to be set to false. + if (pattern.global) { + throw new Error("A RegExp match pattern cannot be set to `global` " + + "(i.e. //g)."); + } + if (pattern.ignoreCase) { + throw new Error("A RegExp match pattern cannot be set to `ignoreCase` " + + "(i.e. //i)."); + } + if (pattern.multiline) { + throw new Error("A RegExp match pattern cannot be set to `multiline` " + + "(i.e. //m)."); + } + + this.regexp = pattern; + } + else { + let firstWildcardPosition = pattern.indexOf("*"); + let lastWildcardPosition = pattern.lastIndexOf("*"); + if (firstWildcardPosition != lastWildcardPosition) + throw new Error("There can be at most one '*' character in a wildcard."); + + if (firstWildcardPosition == 0) { + if (pattern.length == 1) + this.anyWebPage = true; + else if (pattern[1] != ".") + throw new Error("Expected a *.<domain name> string, got: " + pattern); + else + this.domain = pattern.substr(2); + } + else { + if (pattern.indexOf(":") == -1) { + throw new Error("When not using *.example.org wildcard, the string " + + "supplied is expected to be either an exact URL to " + + "match or a URL prefix. The provided string ('" + + pattern + "') is unlikely to match any pages."); + } + + if (firstWildcardPosition == -1) + this.exactURL = pattern; + else if (firstWildcardPosition == pattern.length - 1) + this.urlPrefix = pattern.substr(0, pattern.length - 1); + else { + throw new Error("The provided wildcard ('" + pattern + "') has a '*' " + + "in an unexpected position. It is expected to be the " + + "first or the last character in the wildcard."); + } + } + } +} + +MatchPattern.prototype = { + + test: function MatchPattern_test(urlStr) { + try { + var url = URL(urlStr); + } + catch (err) { + return false; + } + + // Test the URL against a RegExp pattern. For compatibility with + // -moz-document rules, we require the RegExp to match the entire URL, + // so we not only test for a match, we also make sure the matched string + // is the entire URL string. + // + // Assuming most URLs don't match most match patterns, we call `test` for + // speed when determining whether or not the URL matches, then call `exec` + // for the small subset that match to make sure the entire URL matches. + // + if (this.regexp && this.regexp.test(urlStr) && + this.regexp.exec(urlStr)[0] == urlStr) + return true; + + if (this.anyWebPage && /^(https?|ftp)$/.test(url.scheme)) + return true; + if (this.exactURL && this.exactURL == urlStr) + return true; + if (this.domain && url.host && + url.host.slice(-this.domain.length) == this.domain) + return true; + if (this.urlPrefix && 0 == urlStr.indexOf(this.urlPrefix)) + return true; + + return false; + } + +}; |