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+/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* 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/. */
+
+
+/**
+ File Name: 15.1.2.5-1.js
+ ECMA Section: 15.1.2.5 Function properties of the global object
+ unescape( string )
+
+ Description:
+ The unescape function computes a new version of a string value in which
+ each escape sequences of the sort that might be introduced by the escape
+ function is replaced with the character that it represents.
+
+ When the unescape function is called with one argument string, the
+ following steps are taken:
+
+ 1. Call ToString(string).
+ 2. Compute the number of characters in Result(1).
+ 3. Let R be the empty string.
+ 4. Let k be 0.
+ 5. If k equals Result(2), return R.
+ 6. Let c be the character at position k within Result(1).
+ 7. If c is not %, go to step 18.
+ 8. If k is greater than Result(2)-6, go to step 14.
+ 9. If the character at position k+1 within result(1) is not u, go to step
+ 14.
+ 10. If the four characters at positions k+2, k+3, k+4, and k+5 within
+ Result(1) are not all hexadecimal digits, go to step 14.
+ 11. Let c be the character whose Unicode encoding is the integer represented
+ by the four hexadecimal digits at positions k+2, k+3, k+4, and k+5
+ within Result(1).
+ 12. Increase k by 5.
+ 13. Go to step 18.
+ 14. If k is greater than Result(2)-3, go to step 18.
+ 15. If the two characters at positions k+1 and k+2 within Result(1) are not
+ both hexadecimal digits, go to step 18.
+ 16. Let c be the character whose Unicode encoding is the integer represented
+ by two zeroes plus the two hexadecimal digits at positions k+1 and k+2
+ within Result(1).
+ 17. Increase k by 2.
+ 18. Let R be a new string value computed by concatenating the previous value
+ of R and c.
+ 19. Increase k by 1.
+ 20. Go to step 5.
+ Author: christine@netscape.com
+ Date: 28 october 1997
+*/
+
+var SECTION = "15.1.2.5-1";
+var VERSION = "ECMA_1";
+startTest();
+var TITLE = "unescape(string)";
+
+writeHeaderToLog( SECTION + " "+ TITLE);
+
+new TestCase( SECTION, "unescape.length", 1, unescape.length );
+new TestCase( SECTION, "unescape.length = null; unescape.length", 1, eval("unescape.length=null; unescape.length") );
+new TestCase( SECTION, "var MYPROPS=''; for ( var p in unescape ) { MYPROPS+= p }; MYPROPS", "", eval("var MYPROPS=''; for ( var p in unescape ) { MYPROPS+= p }; MYPROPS") );
+
+new TestCase( SECTION, "unescape()", "undefined", unescape() );
+new TestCase( SECTION, "unescape('')", "", unescape('') );
+new TestCase( SECTION, "unescape( null )", "null", unescape(null) );
+new TestCase( SECTION, "unescape( void 0 )", "undefined", unescape(void 0) );
+new TestCase( SECTION, "unescape( true )", "true", unescape( true ) );
+new TestCase( SECTION, "unescape( false )", "false", unescape( false ) );
+
+new TestCase( SECTION, "unescape( new Boolean(true) )", "true", unescape(new Boolean(true)) );
+new TestCase( SECTION, "unescape( new Boolean(false) )", "false", unescape(new Boolean(false)) );
+
+new TestCase( SECTION, "unescape( Number.NaN )", "NaN", unescape(Number.NaN) );
+new TestCase( SECTION, "unescape( -0 )", "0", unescape( -0 ) );
+new TestCase( SECTION, "unescape( 'Infinity' )", "Infinity", unescape( "Infinity" ) );
+new TestCase( SECTION, "unescape( Number.POSITIVE_INFINITY )", "Infinity", unescape( Number.POSITIVE_INFINITY ) );
+new TestCase( SECTION, "unescape( Number.NEGATIVE_INFINITY )", "-Infinity", unescape( Number.NEGATIVE_INFINITY ) );
+
+var ASCII_TEST_STRING = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789@*_+-./";
+
+new TestCase( SECTION, "unescape( " +ASCII_TEST_STRING+" )", ASCII_TEST_STRING, unescape( ASCII_TEST_STRING ) );
+
+// escaped chars with ascii values less than 256
+
+for ( var CHARCODE = 0; CHARCODE < 256; CHARCODE++ ) {
+ new TestCase( SECTION,
+ "unescape( %"+ ToHexString(CHARCODE)+" )",
+ String.fromCharCode(CHARCODE),
+ unescape( "%" + ToHexString(CHARCODE) ) );
+}
+
+// unicode chars represented by two hex digits
+for ( var CHARCODE = 0; CHARCODE < 256; CHARCODE++ ) {
+ new TestCase( SECTION,
+ "unescape( %u"+ ToHexString(CHARCODE)+" )",
+ "%u"+ToHexString(CHARCODE),
+ unescape( "%u" + ToHexString(CHARCODE) ) );
+}
+/*
+ for ( var CHARCODE = 0; CHARCODE < 256; CHARCODE++ ) {
+ new TestCase( SECTION,
+ "unescape( %u"+ ToUnicodeString(CHARCODE)+" )",
+ String.fromCharCode(CHARCODE),
+ unescape( "%u" + ToUnicodeString(CHARCODE) ) );
+ }
+ for ( var CHARCODE = 256; CHARCODE < 65536; CHARCODE+= 333 ) {
+ new TestCase( SECTION,
+ "unescape( %u"+ ToUnicodeString(CHARCODE)+" )",
+ String.fromCharCode(CHARCODE),
+ unescape( "%u" + ToUnicodeString(CHARCODE) ) );
+ }
+*/
+
+test();
+
+function ToUnicodeString( n ) {
+ var string = ToHexString(n);
+
+ for ( var PAD = (4 - string.length ); PAD > 0; PAD-- ) {
+ string = "0" + string;
+ }
+
+ return string;
+}
+function ToHexString( n ) {
+ var hex = new Array();
+
+ for ( var mag = 1; Math.pow(16,mag) <= n ; mag++ ) {
+ ;
+ }
+
+ for ( index = 0, mag -= 1; mag > 0; index++, mag-- ) {
+ hex[index] = Math.floor( n / Math.pow(16,mag) );
+ n -= Math.pow(16,mag) * Math.floor( n/Math.pow(16,mag) );
+ }
+
+ hex[hex.length] = n % 16;
+
+ var string ="";
+
+ for ( var index = 0 ; index < hex.length ; index++ ) {
+ switch ( hex[index] ) {
+ case 10:
+ string += "A";
+ break;
+ case 11:
+ string += "B";
+ break;
+ case 12:
+ string += "C";
+ break;
+ case 13:
+ string += "D";
+ break;
+ case 14:
+ string += "E";
+ break;
+ case 15:
+ string += "F";
+ break;
+ default:
+ string += hex[index];
+ }
+ }
+
+ if ( string.length == 1 ) {
+ string = "0" + string;
+ }
+ return string;
+}