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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: 15.1.2.4.js
ECMA Section: 15.1.2.4 Function properties of the global object
escape( string )
Description:
The escape function computes a new version of a string value in which
certain characters have been replaced by a hexadecimal escape sequence.
The result thus contains no special characters that might have special
meaning within a URL.
For characters whose Unicode encoding is 0xFF or less, a two-digit
escape sequence of the form %xx is used in accordance with RFC1738.
For characters whose Unicode encoding is greater than 0xFF, a four-
digit escape sequence of the form %uxxxx is used.
When the escape 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. Get the character at position k within Result(1).
7. If Result(6) is one of the 69 nonblank ASCII characters
ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
0123456789 @*_+-./, go to step 14.
8. Compute the 16-bit unsigned integer that is the Unicode character
encoding of Result(6).
9. If Result(8), is less than 256, go to step 12.
10. Let S be a string containing six characters "%uwxyz" where wxyz are
four hexadecimal digits encoding the value of Result(8).
11. Go to step 15.
12. Let S be a string containing three characters "%xy" where xy are two
hexadecimal digits encoding the value of Result(8).
13. Go to step 15.
14. Let S be a string containing the single character Result(6).
15. Let R be a new string value computed by concatenating the previous value
of R and S.
16. Increase k by 1.
17. Go to step 5.
Author: christine@netscape.com
Date: 28 october 1997
*/
var SECTION = "15.1.2.4";
var VERSION = "ECMA_1";
startTest();
var TITLE = "escape(string)";
writeHeaderToLog( SECTION + " "+ TITLE);
new TestCase( SECTION, "escape.length", 1, escape.length );
new TestCase( SECTION, "escape.length = null; escape.length", 1, eval("escape.length = null; escape.length") );
new TestCase( SECTION, "var MYPROPS=''; for ( var p in escape ) { MYPROPS+= p}; MYPROPS", "", eval("var MYPROPS=''; for ( var p in escape ) { MYPROPS+= p}; MYPROPS") );
new TestCase( SECTION, "escape()", "undefined", escape() );
new TestCase( SECTION, "escape('')", "", escape('') );
new TestCase( SECTION, "escape( null )", "null", escape(null) );
new TestCase( SECTION, "escape( void 0 )", "undefined", escape(void 0) );
new TestCase( SECTION, "escape( true )", "true", escape( true ) );
new TestCase( SECTION, "escape( false )", "false", escape( false ) );
new TestCase( SECTION, "escape( new Boolean(true) )", "true", escape(new Boolean(true)) );
new TestCase( SECTION, "escape( new Boolean(false) )", "false", escape(new Boolean(false)) );
new TestCase( SECTION, "escape( Number.NaN )", "NaN", escape(Number.NaN) );
new TestCase( SECTION, "escape( -0 )", "0", escape( -0 ) );
new TestCase( SECTION, "escape( 'Infinity' )", "Infinity", escape( "Infinity" ) );
new TestCase( SECTION, "escape( Number.POSITIVE_INFINITY )", "Infinity", escape( Number.POSITIVE_INFINITY ) );
new TestCase( SECTION, "escape( Number.NEGATIVE_INFINITY )", "-Infinity", escape( Number.NEGATIVE_INFINITY ) );
var ASCII_TEST_STRING = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789@*_+-./";
new TestCase( SECTION, "escape( " +ASCII_TEST_STRING+" )", ASCII_TEST_STRING, escape( ASCII_TEST_STRING ) );
// ASCII value less than
for ( var CHARCODE = 0; CHARCODE < 32; CHARCODE++ ) {
new TestCase( SECTION,
"escape(String.fromCharCode("+CHARCODE+"))",
"%"+ToHexString(CHARCODE),
escape(String.fromCharCode(CHARCODE)) );
}
for ( var CHARCODE = 128; CHARCODE < 256; CHARCODE++ ) {
new TestCase( SECTION,
"escape(String.fromCharCode("+CHARCODE+"))",
"%"+ToHexString(CHARCODE),
escape(String.fromCharCode(CHARCODE)) );
}
for ( var CHARCODE = 256; CHARCODE < 1024; CHARCODE++ ) {
new TestCase( SECTION,
"escape(String.fromCharCode("+CHARCODE+"))",
"%u"+ ToUnicodeString(CHARCODE),
escape(String.fromCharCode(CHARCODE)) );
}
for ( var CHARCODE = 65500; CHARCODE < 65536; CHARCODE++ ) {
new TestCase( SECTION,
"escape(String.fromCharCode("+CHARCODE+"))",
"%u"+ ToUnicodeString(CHARCODE),
escape(String.fromCharCode(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;
}
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