JezK
Edit File: escape.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. /** * @fileoverview Check that the global escape and unescape functions work * right. */ // Section B.2.1 of ECMAScript 3 var unescaped = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789@*_+-./"; // Check the unescape chars are not escaped assertEquals(unescaped, escape(unescaped)); // Check spaces are escaped assertEquals("%20/%20", escape(" / ")); // Check that null chars are escaped and do not terminate the string assertEquals("%000", escape("\0" + "0")); // Check a unicode escape assertEquals("A%20B%u1234%00%20C", escape(String.fromCharCode(0x41, 0x20, 0x42, 0x1234, 0, 0x20, 0x43))); // Check unicode escapes have a leading zero to pad to 4 digits assertEquals("%u0123", escape(String.fromCharCode(0x123))); // Check escapes are upper case assertEquals("%uABCD", escape(String.fromCharCode(0xabcd))); assertEquals("%AB", escape(String.fromCharCode(0xab))); assertEquals("%0A", escape("\n")); // Check first 1000 chars individually for escaped/not escaped for (var i = 0; i < 1000; i++) { var s = String.fromCharCode(i); if (unescaped.indexOf(s, 0) == -1) { assertFalse(s == escape(s)); } else { assertTrue(s == escape(s)); } } // Check all chars up to 1000 in groups of 10 using unescape as a check for (var i = 0; i < 1000; i += 10) { var s = String.fromCharCode(i, i+1, i+2, i+3, i+4, i+5, i+6, i+7, i+8, i+9); assertEquals(s, unescape(escape(s))); } // Benchmark var example = "Now is the time for all good men to come to the aid of the party."; example = example + String.fromCharCode(267, 0x1234, 0x6667, 0xabcd); example = example + " The quick brown fox jumps over the lazy dog." example = example + String.fromCharCode(171, 172, 173, 174, 175, 176, 178, 179); for (var i = 0; i < 3000; i++) { assertEquals(example, unescape(escape(example))); } // Check unescape can cope with upper and lower case assertEquals(unescape("%41%4A%4a"), "AJJ"); // Check upper case U assertEquals("%U1234", unescape("%U1234")); // Check malformed unescapes assertEquals("%", unescape("%")); assertEquals("%4", unescape("%4")); assertEquals("%u", unescape("%u")); assertEquals("%u4", unescape("%u4")); assertEquals("%u44", unescape("%u44")); assertEquals("%u444", unescape("%u444")); assertEquals("%4z", unescape("%4z")); assertEquals("%uzzzz", unescape("%uzzzz")); assertEquals("%u4zzz", unescape("%u4zzz")); assertEquals("%u44zz", unescape("%u44zz")); assertEquals("%u444z", unescape("%u444z")); assertEquals("%4<", unescape("%4<")); assertEquals("%u<<<<", unescape("%u<<<<")); assertEquals("%u4<<<", unescape("%u4<<<")); assertEquals("%u44<<", unescape("%u44<<")); assertEquals("%u444<", unescape("%u444<")); assertEquals("foo%4<", unescape("foo%4<")); assertEquals("foo%u<<<<", unescape("foo%u<<<<")); assertEquals("foo%u4<<<", unescape("foo%u4<<<")); assertEquals("foo%u44<<", unescape("foo%u44<<")); assertEquals("foo%u444<", unescape("foo%u444<")); assertEquals("foo%4<bar", unescape("foo%4<bar")); assertEquals("foo%u<<<<bar", unescape("foo%u<<<<bar")); assertEquals("foo%u4<<<bar", unescape("foo%u4<<<bar")); assertEquals("foo%u44<<bar", unescape("foo%u44<<bar")); assertEquals("foo%u444<bar", unescape("foo%u444<bar")); assertEquals("% ", unescape("%%20")); assertEquals("%% ", unescape("%%%20")); // Unescape stress var eexample = escape(example); for (var i = 1; i < 3000; i++) { assertEquals(example, unescape(eexample)); }