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: 15.1.2.5-3.js 24 ECMA Section: 15.1.2.5 Function properties of the global object 25 unescape( string ) 26 27 Description: 28 This tests the cases where one of the four characters following "%u" is 29 not a hexidecimal character, or one of the two characters following "%" 30 or "%u" is not a hexidecimal character. 31 32 The unescape function computes a new version of a string value in which 33 each escape sequences of the sort that might be introduced by the escape 34 function is replaced with the character that it represents. 35 36 When the unescape function is called with one argument string, the 37 following steps are taken: 38 39 1. Call ToString(string). 40 2. Compute the number of characters in Result(1). 41 3. Let R be the empty string. 42 4. Let k be 0. 43 5. If k equals Result(2), return R. 44 6. Let c be the character at position k within Result(1). 45 7. If c is not %, go to step 18. 46 8. If k is greater than Result(2)-6, go to step 14. 47 9. If the character at position k+1 within result(1) is not u, go to step 48 14. 49 10. If the four characters at positions k+2, k+3, k+4, and k+5 within 50 Result(1) are not all hexadecimal digits, go to step 14. 51 11. Let c be the character whose Unicode encoding is the integer represented 52 by the four hexadecimal digits at positions k+2, k+3, k+4, and k+5 53 within Result(1). 54 12. Increase k by 5. 55 13. Go to step 18. 56 14. If k is greater than Result(2)-3, go to step 18. 57 15. If the two characters at positions k+1 and k+2 within Result(1) are not 58 both hexadecimal digits, go to step 18. 59 16. Let c be the character whose Unicode encoding is the integer represented 60 by two zeroes plus the two hexadecimal digits at positions k+1 and k+2 61 within Result(1). 62 17. Increase k by 2. 63 18. Let R be a new string value computed by concatenating the previous value 64 of R and c. 65 19. Increase k by 1. 66 20. Go to step 5. 67 Author: christine@netscape.com 68 Date: 28 october 1997 69*/ 70 71 72 var SECTION = "15.1.2.5-3"; 73 var VERSION = "ECMA_1"; 74 startTest(); 75 var TITLE = "unescape(string)"; 76 77 writeHeaderToLog( SECTION + " "+ TITLE); 78 79 var testcases = getTestCases(); 80 81 test(); 82 83function getTestCases() { 84 var array = new Array(); 85 var item = 0; 86 87 for ( var CHARCODE = 0, NONHEXCHARCODE = 0; CHARCODE < 256; CHARCODE++, NONHEXCHARCODE++ ) { 88 NONHEXCHARCODE = getNextNonHexCharCode( NONHEXCHARCODE ); 89 90 array[item++] = new TestCase( SECTION, 91 "unescape( %"+ (ToHexString(CHARCODE)).substring(0,1) + 92 String.fromCharCode( NONHEXCHARCODE ) +" )" + 93 "[where last character is String.fromCharCode("+NONHEXCHARCODE+")]", 94 "%"+(ToHexString(CHARCODE)).substring(0,1)+ 95 String.fromCharCode( NONHEXCHARCODE ), 96 unescape( "%" + (ToHexString(CHARCODE)).substring(0,1)+ 97 String.fromCharCode( NONHEXCHARCODE ) ) ); 98 } 99 for ( var CHARCODE = 0, NONHEXCHARCODE = 0; CHARCODE < 256; CHARCODE++, NONHEXCHARCODE++ ) { 100 NONHEXCHARCODE = getNextNonHexCharCode( NONHEXCHARCODE ); 101 102 array[item++] = new TestCase( SECTION, 103 "unescape( %u"+ (ToHexString(CHARCODE)).substring(0,1) + 104 String.fromCharCode( NONHEXCHARCODE ) +" )" + 105 "[where last character is String.fromCharCode("+NONHEXCHARCODE+")]", 106 "%u"+(ToHexString(CHARCODE)).substring(0,1)+ 107 String.fromCharCode( NONHEXCHARCODE ), 108 unescape( "%u" + (ToHexString(CHARCODE)).substring(0,1)+ 109 String.fromCharCode( NONHEXCHARCODE ) ) ); 110 } 111 112 for ( var CHARCODE = 0, NONHEXCHARCODE = 0 ; CHARCODE < 65536; CHARCODE+= 54321, NONHEXCHARCODE++ ) { 113 NONHEXCHARCODE = getNextNonHexCharCode( NONHEXCHARCODE ); 114 115 array[item++] = new TestCase( SECTION, 116 "unescape( %u"+ (ToUnicodeString(CHARCODE)).substring(0,3) + 117 String.fromCharCode( NONHEXCHARCODE ) +" )" + 118 "[where last character is String.fromCharCode("+NONHEXCHARCODE+")]", 119 120 String.fromCharCode(eval("0x"+ (ToUnicodeString(CHARCODE)).substring(0,2))) + 121 (ToUnicodeString(CHARCODE)).substring(2,3) + 122 String.fromCharCode( NONHEXCHARCODE ), 123 124 unescape( "%" + (ToUnicodeString(CHARCODE)).substring(0,3)+ 125 String.fromCharCode( NONHEXCHARCODE ) ) ); 126 } 127 128 return ( array ); 129} 130function getNextNonHexCharCode( n ) { 131 for ( ; n < Math.pow(2,16); n++ ) { 132 if ( ( n == 43 || n == 45 || n == 46 || n == 47 || 133 (n >= 71 && n <= 90) || (n >= 103 && n <= 122) || 134 n == 64 || n == 95 ) ) { 135 break; 136 } else { 137 n = ( n > 122 ) ? 0 : n; 138 } 139 } 140 return n; 141} 142function ToUnicodeString( n ) { 143 var string = ToHexString(n); 144 145 for ( var PAD = (4 - string.length ); PAD > 0; PAD-- ) { 146 string = "0" + string; 147 } 148 149 return string; 150} 151function ToHexString( n ) { 152 var hex = new Array(); 153 154 for ( var mag = 1; Math.pow(16,mag) <= n ; mag++ ) { 155 ; 156 } 157 158 for ( index = 0, mag -= 1; mag > 0; index++, mag-- ) { 159 hex[index] = Math.floor( n / Math.pow(16,mag) ); 160 n -= Math.pow(16,mag) * Math.floor( n/Math.pow(16,mag) ); 161 } 162 163 hex[hex.length] = n % 16; 164 165 var string =""; 166 167 for ( var index = 0 ; index < hex.length ; index++ ) { 168 switch ( hex[index] ) { 169 case 10: 170 string += "A"; 171 break; 172 case 11: 173 string += "B"; 174 break; 175 case 12: 176 string += "C"; 177 break; 178 case 13: 179 string += "D"; 180 break; 181 case 14: 182 string += "E"; 183 break; 184 case 15: 185 string += "F"; 186 break; 187 default: 188 string += hex[index]; 189 } 190 } 191 192 if ( string.length == 1 ) { 193 string = "0" + string; 194 } 195 return string; 196} 197function test() { 198 for ( tc=0; tc < testcases.length; tc++ ) { 199 testcases[tc].passed = writeTestCaseResult( 200 testcases[tc].expect, 201 testcases[tc].actual, 202 testcases[tc].description +" = "+ testcases[tc].actual ); 203 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value "; 204 } 205 stopTest(); 206 return ( testcases ); 207} 208