1 /* The contents of this file are subject to the Netscape Public 2 * License Version 1.1 (the "License"); you may not use this file 3 * except in compliance with the License. You may obtain a copy of 4 * the License at http://www.mozilla.org/NPL/ 5 * 6 * Software distributed under the License is distributed on an "AS 7 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 8 * implied. See the License for the specific language governing 9 * rights and limitations under the License. 10 * 11 * The Original Code is Mozilla Communicator client code, released March 12 * 31, 1998. 13 * 14 * The Initial Developer of the Original Code is Netscape Communications 15 * Corporation. Portions created by Netscape are 16 * Copyright (C) 1998 Netscape Communications Corporation. All 17 * Rights Reserved. 18 * 19 * Contributor(s): 20 * 21 */ 22 /** 23 File Name: 15.1.2.5-2.js 24 ECMA Section: 15.1.2.5 Function properties of the global object 25 unescape( string ) 26 Description: 27 28 This tests the cases where there are fewer than 4 characters following "%u", 29 or fewer than 2 characters following "%" or "%u". 30 31 The unescape function computes a new version of a string value in which 32 each escape sequences of the sort that might be introduced by the escape 33 function is replaced with the character that it represents. 34 35 When the unescape function is called with one argument string, the 36 following steps are taken: 37 38 1. Call ToString(string). 39 2. Compute the number of characters in Result(1). 40 3. Let R be the empty string. 41 4. Let k be 0. 42 5. If k equals Result(2), return R. 43 6. Let c be the character at position k within Result(1). 44 7. If c is not %, go to step 18. 45 8. If k is greater than Result(2)-6, go to step 14. 46 9. If the character at position k+1 within result(1) is not u, go to step 47 14. 48 10. If the four characters at positions k+2, k+3, k+4, and k+5 within 49 Result(1) are not all hexadecimal digits, go to step 14. 50 11. Let c be the character whose Unicode encoding is the integer represented 51 by the four hexadecimal digits at positions k+2, k+3, k+4, and k+5 52 within Result(1). 53 12. Increase k by 5. 54 13. Go to step 18. 55 14. If k is greater than Result(2)-3, go to step 18. 56 15. If the two characters at positions k+1 and k+2 within Result(1) are not 57 both hexadecimal digits, go to step 18. 58 16. Let c be the character whose Unicode encoding is the integer represented 59 by two zeroes plus the two hexadecimal digits at positions k+1 and k+2 60 within Result(1). 61 17. Increase k by 2. 62 18. Let R be a new string value computed by concatenating the previous value 63 of R and c. 64 19. Increase k by 1. 65 20. Go to step 5. 66 Author: christine (at) netscape.com 67 Date: 28 october 1997 68 */ 69 70 var SECTION = "15.1.2.5-2"; 71 var VERSION = "ECMA_1"; 72 startTest(); 73 var TITLE = "unescape(string)"; 74 75 writeHeaderToLog( SECTION + " "+ TITLE); 76 77 var testcases = getTestCases(); 78 79 test(); 80 81 function getTestCases() { 82 var array = new Array(); 83 var item = 0; 84 85 // since there is only one character following "%", no conversion should occur. 86 87 for ( var CHARCODE = 0; CHARCODE < 256; CHARCODE += 16 ) { 88 array[item++] = new TestCase( SECTION, 89 "unescape( %"+ (ToHexString(CHARCODE)).substring(0,1) +" )", 90 "%"+(ToHexString(CHARCODE)).substring(0,1), 91 unescape( "%" + (ToHexString(CHARCODE)).substring(0,1) ) ); 92 } 93 94 // since there is only one character following "%u", no conversion should occur. 95 96 for ( var CHARCODE = 0; CHARCODE < 256; CHARCODE +=16 ) { 97 array[item++] = new TestCase( SECTION, 98 "unescape( %u"+ (ToHexString(CHARCODE)).substring(0,1) +" )", 99 "%u"+(ToHexString(CHARCODE)).substring(0,1), 100 unescape( "%u" + (ToHexString(CHARCODE)).substring(0,1) ) ); 101 } 102 103 104 // three char unicode string. no conversion should occur 105 106 for ( var CHARCODE = 1024; CHARCODE < 65536; CHARCODE+= 1234 ) { 107 array[item++] = new TestCase 108 ( SECTION, 109 "unescape( %u"+ (ToUnicodeString(CHARCODE)).substring(0,3)+ " )", 110 111 "%u"+(ToUnicodeString(CHARCODE)).substring(0,3), 112 unescape( "%u"+(ToUnicodeString(CHARCODE)).substring(0,3) ) 113 ); 114 } 115 116 return ( array ); 117 } 118 119 function ToUnicodeString( n ) { 120 var string = ToHexString(n); 121 122 for ( var PAD = (4 - string.length ); PAD > 0; PAD-- ) { 123 string = "0" + string; 124 } 125 126 return string; 127 } 128 function ToHexString( n ) { 129 var hex = new Array(); 130 131 for ( var mag = 1; Math.pow(16,mag) <= n ; mag++ ) { 132 ; 133 } 134 135 for ( index = 0, mag -= 1; mag > 0; index++, mag-- ) { 136 hex[index] = Math.floor( n / Math.pow(16,mag) ); 137 n -= Math.pow(16,mag) * Math.floor( n/Math.pow(16,mag) ); 138 } 139 140 hex[hex.length] = n % 16; 141 142 var string =""; 143 144 for ( var index = 0 ; index < hex.length ; index++ ) { 145 switch ( hex[index] ) { 146 case 10: 147 string += "A"; 148 break; 149 case 11: 150 string += "B"; 151 break; 152 case 12: 153 string += "C"; 154 break; 155 case 13: 156 string += "D"; 157 break; 158 case 14: 159 string += "E"; 160 break; 161 case 15: 162 string += "F"; 163 break; 164 default: 165 string += hex[index]; 166 } 167 } 168 169 if ( string.length == 1 ) { 170 string = "0" + string; 171 } 172 return string; 173 } 174 function test() { 175 for ( tc=0; tc < testcases.length; tc++ ) { 176 testcases[tc].passed = writeTestCaseResult( 177 testcases[tc].expect, 178 testcases[tc].actual, 179 testcases[tc].description +" = "+ testcases[tc].actual ); 180 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value "; 181 } 182 stopTest(); 183 return ( testcases ); 184 } 185
