maettig/LICENSE.txt

## README.md

      
    Raw
  

              README.md
            
          
    Java and JavaScript (.js) source files can use any character encoding. If one programmer uses UTF-8 and the other ISO encoding, there is a chance you will end with something like "Ren�" or "RenÃ©" instead of "René". The most reliable way to avoid all conversion errors is to encode all special characters with escape sequences. JavaScript allows both hex (e.g. \xFF) and Unicode escape sequences (e.g. \u0100) in string literals while Java allows Unicode escape sequences only.
Click here to see it in action.
Tested with Opera, Firefox and Internet Explorer 8 (insufficient CSS support, but it works).

  
## annotated.js
function f(a, b)
{
  return ++b                                 //`b` is a number (including 0) when `replace` calls the function
    ? '\\' + (                               //all escape sequences start with a backslash
      (a = a.charCodeAt()) >> 12             //all characters from U+1000 and above
        ? 'u'                                //must start with `\u`
        : a >> 8                             //all characters from U+0100 to U+0FFF
          ? 'u0'                             //must start with `\u0`
          : 'x'                              //characters from U+007F to U+00FF can start with `\u00` or `\x`
      ) + a.toString(16).toUpperCase()       //add the upper case hex string (it does not contain leading zeros)
    : a.replace(/[^\0-~]/g, f)               //else call the function for all non-ASCII characters (all except U+0000 to U+007E)
}

## index.js
function f(a,b){return++b?'\\'+((a=a.charCodeAt())>>12?'u':a>>8?'u0':'x')+a.toString(16).toUpperCase():a.replace(/[^\0-~]/g,f)}

## LICENSE.txt
            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2012 Thiemo Mättig <http://maettig.com>

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. You just DO WHAT THE FUCK YOU WANT TO.

## package.json
{
  "name": "encodeJavaScriptString",

  "description": "Converts JavaScript strings to 7 bit US-ASCII.",

  "keywords": [
    "encode",
    "escaping",
    "javascript",
    "string",
    "unicode"
  ]
}

## test.html
<!DOCTYPE html>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<h1>
<input id="i0" name="lang" onclick="refresh()" type="radio" checked><label for="i0" title="\u00FF only">Java String Encoder</label><br>
<input id="i1" name="lang" onclick="refresh()" type="radio"><label for="i1" title="\xFF and \u0100">JavaScript String Encoder</label>
</h1>
<textarea onkeyup="refresh()" rows="8" cols="100">// Paste some Java or JavaScript code into this window.
german = "&Uuml;bergr&ouml;&szlig;e";
smilie = "&#x263A;";</textarea>
<pre onclick="select(this)">This encoding utility requires JavaScript.</pre>
<script type="text/javascript">
// 127 bytes
var encodeJavaScriptString = function f(a, b)
{
  return ++b                                 //`b` is a number (including 0) when `replace` calls the function
    ? '\\' + (                               //all escape sequences start with a backslash
      (a = a.charCodeAt()) >> 12             //all characters from U+1000 and above
        ? 'u'                                //must start with `\u`
        : a >> 8                             //all characters from U+0100 to U+0FFF
          ? 'u0'                             //must start with `\u0`
          : 'x'                              //characters from U+007F to U+00FF can start with `\u00` or `\x`
      ) + a.toString(16).toUpperCase()       //add the upper case hex string (it does not contain leading zeros)
    : a.replace(/[^\0-~]/g, f)               //else call the function for all non-ASCII characters (all except U+0000 to U+007E)
}
// 115 bytes
var encodeJavaString = function e(a, b)
{
  return ++b                                 //`b` is a number when `replace` calls the function
    ? '\\u' +                                //in Java all escape sequences must start with `\u`
      ('00' + a.charCodeAt().toString(16))   //build a hex string with at least 4 characters
      .slice(-4).toUpperCase()               //use the last 4 characters and make them upper case
    : a.replace(/[^\0-~]/g, e)               //else call the function for all non-ASCII characters (all except U+0000 to U+007E)
}
// 89 bytes
var select = function(a, b)
{
  b = document.createRange();
  b.selectNode(a);
  window.getSelection().addRange(b)
}
var refresh = function()
{
  var t = document.getElementsByTagName('TEXTAREA')[0];
  var p = document.getElementsByTagName('PRE')[0];
  var f = document.getElementById('i1').checked ? encodeJavaScriptString : encodeJavaString;
  p.firstChild.data = f(t.value).replace(/\r\n/g, '\n');
}
refresh();
</script>
	function f(a, b)
	{
	return ++b //`b` is a number (including 0) when `replace` calls the function
	? '\\' + ( //all escape sequences start with a backslash
	(a = a.charCodeAt()) >> 12 //all characters from U+1000 and above
	? 'u' //must start with `\u`
	: a >> 8 //all characters from U+0100 to U+0FFF
	? 'u0' //must start with `\u0`
	: 'x' //characters from U+007F to U+00FF can start with `\u00` or `\x`
	) + a.toString(16).toUpperCase() //add the upper case hex string (it does not contain leading zeros)
	: a.replace(/[^\0-~]/g, f) //else call the function for all non-ASCII characters (all except U+0000 to U+007E)
	}
	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2012 Thiemo Mättig <http://maettig.com>

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

	0. You just DO WHAT THE FUCK YOU WANT TO.
	{
	"name": "encodeJavaScriptString",

	"description": "Converts JavaScript strings to 7 bit US-ASCII.",

	"keywords": [
	"encode",
	"escaping",
	"javascript",
	"string",
	"unicode"
	]
	}
	<!DOCTYPE html>
	<meta http-equiv="content-type" content="text/html; charset=UTF-8">
	<h1>
	<input id="i0" name="lang" onclick="refresh()" type="radio" checked><label for="i0" title="\u00FF only">Java String Encoder</label><br>
	<input id="i1" name="lang" onclick="refresh()" type="radio"><label for="i1" title="\xFF and \u0100">JavaScript String Encoder</label>
	</h1>
	<textarea onkeyup="refresh()" rows="8" cols="100">// Paste some Java or JavaScript code into this window.
	german = "Übergröße";
	smilie = "☺";</textarea>
	<pre onclick="select(this)">This encoding utility requires JavaScript.</pre>
	<script type="text/javascript">
	// 127 bytes
	var encodeJavaScriptString = function f(a, b)
	{
	return ++b //`b` is a number (including 0) when `replace` calls the function
	? '\\' + ( //all escape sequences start with a backslash
	(a = a.charCodeAt()) >> 12 //all characters from U+1000 and above
	? 'u' //must start with `\u`
	: a >> 8 //all characters from U+0100 to U+0FFF
	? 'u0' //must start with `\u0`
	: 'x' //characters from U+007F to U+00FF can start with `\u00` or `\x`
	) + a.toString(16).toUpperCase() //add the upper case hex string (it does not contain leading zeros)
	: a.replace(/[^\0-~]/g, f) //else call the function for all non-ASCII characters (all except U+0000 to U+007E)
	}
	// 115 bytes
	var encodeJavaString = function e(a, b)
	{
	return ++b //`b` is a number when `replace` calls the function
	? '\\u' + //in Java all escape sequences must start with `\u`
	('00' + a.charCodeAt().toString(16)) //build a hex string with at least 4 characters
	.slice(-4).toUpperCase() //use the last 4 characters and make them upper case
	: a.replace(/[^\0-~]/g, e) //else call the function for all non-ASCII characters (all except U+0000 to U+007E)
	}
	// 89 bytes
	var select = function(a, b)
	{
	b = document.createRange();
	b.selectNode(a);
	window.getSelection().addRange(b)
	}
	var refresh = function()
	{
	var t = document.getElementsByTagName('TEXTAREA')[0];
	var p = document.getElementsByTagName('PRE')[0];
	var f = document.getElementById('i1').checked ? encodeJavaScriptString : encodeJavaString;
	p.firstChild.data = f(t.value).replace(/\r\n/g, '\n');
	}
	refresh();
	</script>