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: 15.5.4.8-3.js 24 ECMA Section: 15.5.4.8 String.prototype.split( separator ) 25 Description: 26 27 Returns an Array object into which substrings of the result of converting 28 this object to a string have been stored. The substrings are determined by 29 searching from left to right for occurrences of the given separator; these 30 occurrences are not part of any substring in the returned array, but serve 31 to divide up this string value. The separator may be a string of any length. 32 33 As a special case, if the separator is the empty string, the string is split 34 up into individual characters; the length of the result array equals the 35 length of the string, and each substring contains one character. 36 37 If the separator is not supplied, then the result array contains just one 38 string, which is the string. 39 40 When the split method is called with one argument separator, the following steps are taken: 41 42 1. Call ToString, giving it the this value as its argument. 43 2. Create a new Array object of length 0 and call it A. 44 3. If separator is not supplied, call the [[Put]] method of A with 0 and 45 Result(1) as arguments, and then return A. 46 4. Call ToString(separator). 47 5. Compute the number of characters in Result(1). 48 6. Compute the number of characters in the string that is Result(4). 49 7. Let p be 0. 50 8. If Result(6) is zero (the separator string is empty), go to step 17. 51 9. Compute the smallest possible integer k not smaller than p such that 52 k+Result(6) is not greater than Result(5), and for all nonnegative 53 integers j less than Result(6), the character at position k+j of 54 Result(1) is the same as the character at position j of Result(2); 55 but if there is no such integer k, then go to step 14. 56 10. Compute a string value equal to the substring of Result(1), consisting 57 of the characters at positions p through k1, inclusive. 58 11. Call the [[Put]] method of A with A.length and Result(10) as arguments. 59 12. Let p be k+Result(6). 60 13. Go to step 9. 61 14. Compute a string value equal to the substring of Result(1), consisting 62 of the characters from position p to the end of Result(1). 63 15. Call the [[Put]] method of A with A.length and Result(14) as arguments. 64 16. Return A. 65 17. If p equals Result(5), return A. 66 18. Compute a string value equal to the substring of Result(1), consisting of 67 the single character at position p. 68 19. Call the [[Put]] method of A with A.length and Result(18) as arguments. 69 20. Increase p by 1. 70 21. Go to step 17. 71 72 Note that the split function is intentionally generic; it does not require that its this value be a String 73 object. Therefore it can be transferred to other kinds of objects for use as a method. 74 75 Author: christine (at) netscape.com 76 Date: 12 november 1997 77 */ 78 79 var SECTION = "15.5.4.8-3"; 80 var VERSION = "ECMA_1"; 81 startTest(); 82 var TITLE = "String.prototype.split"; 83 84 writeHeaderToLog( SECTION + " "+ TITLE); 85 86 var testcases = getTestCases(); 87 test(); 88 89 function getTestCases() { 90 var array = new Array(); 91 var item = 0; 92 93 var TEST_STRING = ""; 94 var EXPECT = new Array(); 95 96 // this.toString is the empty string. 97 98 array[item++] = new TestCase( SECTION, 99 "var s = new String(); s.split().length", 100 1, 101 eval("var s = new String(); s.split().length") ); 102 103 array[item++] = new TestCase( SECTION, 104 "var s = new String(); s.split()[0]", 105 "", 106 eval("var s = new String(); s.split()[0]") ); 107 108 // this.toString() is the empty string, separator is specified. 109 110 array[item++] = new TestCase( SECTION, 111 "var s = new String(); s.split('').length", 112 0, 113 eval("var s = new String(); s.split('').length") ); 114 115 array[item++] = new TestCase( SECTION, 116 "var s = new String(); s.split(' ').length", 117 1, 118 eval("var s = new String(); s.split(' ').length") ); 119 120 // this to string is " " 121 array[item++] = new TestCase( SECTION, 122 "var s = new String(' '); s.split().length", 123 1, 124 eval("var s = new String(' '); s.split().length") ); 125 126 array[item++] = new TestCase( SECTION, 127 "var s = new String(' '); s.split()[0]", 128 " ", 129 eval("var s = new String(' '); s.split()[0]") ); 130 131 array[item++] = new TestCase( SECTION, 132 "var s = new String(' '); s.split('').length", 133 1, 134 eval("var s = new String(' '); s.split('').length") ); 135 136 array[item++] = new TestCase( SECTION, 137 "var s = new String(' '); s.split('')[0]", 138 " ", 139 eval("var s = new String(' '); s.split('')[0]") ); 140 141 array[item++] = new TestCase( SECTION, 142 "var s = new String(' '); s.split(' ').length", 143 2, 144 eval("var s = new String(' '); s.split(' ').length") ); 145 146 array[item++] = new TestCase( SECTION, 147 "var s = new String(' '); s.split(' ')[0]", 148 "", 149 eval("var s = new String(' '); s.split(' ')[0]") ); 150 151 array[item++] = new TestCase( SECTION, 152 "\"\".split(\"\").length", 153 0, 154 ("".split("")).length ); 155 156 array[item++] = new TestCase( SECTION, 157 "\"\".split(\"x\").length", 158 1, 159 ("".split("x")).length ); 160 161 array[item++] = new TestCase( SECTION, 162 "\"\".split(\"x\")[0]", 163 "", 164 ("".split("x"))[0] ); 165 166 return array; 167 } 168 function test() { 169 for ( tc=0; tc < testcases.length; tc++ ) { 170 testcases[tc].passed = writeTestCaseResult( 171 testcases[tc].expect, 172 testcases[tc].actual, 173 testcases[tc].description +" = "+ 174 testcases[tc].actual ); 175 176 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value "; 177 } 178 stopTest(); 179 return ( testcases ); 180 } 181 function Split( string, separator ) { 182 string = String( string ); 183 184 var A = new Array(); 185 186 if ( arguments.length < 2 ) { 187 A[0] = string; 188 return A; 189 } 190 191 separator = String( separator ); 192 193 var str_len = String( string ).length; 194 var sep_len = String( separator ).length; 195 196 var p = 0; 197 var k = 0; 198 199 if ( sep_len == 0 ) { 200 for ( ; p < str_len; p++ ) { 201 A[A.length] = String( string.charAt(p) ); 202 } 203 } 204 return A; 205 } 206
