Enter a message to decode: ' +
' ' +
'[' +
'Add To Message Box]' +
'';
}
function GetSeconds()
{
var d = new Date();
return d.getSeconds();
}
var Process_Text_Done;
var Process_Text_Lookup;
function ProcessDecodeBox(work)
{
var t = document.encoder.decodeBox.value;
var d = GetSeconds();
var Lookup = new Array();
if (! work)
{
document.getElementById('decodeBoxLink').style.display = "none";
document.getElementById('decodeBoxWorking').style.display = "inline";
Process_Text_Done = '';
Process_Text_Lookup = new Array();
for (var i = 0; i < 256; i ++)
{
var e = document.getElementById('Text_Link_' + i.toString());
if (e)
{
Process_Text_Lookup[e.innerHTML] = String.fromCharCode(i);
}
}
window.setTimeout('ProcessDecodeBox(1)', 1);
return;
}
while (t.length && d == GetSeconds())
{
var c = '';
for (var code in Process_Text_Lookup)
{
if (code == t.slice(0, code.length))
{
c += Process_Text_Lookup[code];
t = t.slice(code.length);
}
}
if (c != '')
{
Process_Text_Done += c;
}
else
{
Process_Text_Done += t.charAt(0);
t = t.slice(1, t.length);
}
}
document.encoder.decodeBox.value = t;
if (t.length)
{
window.setTimeout('ProcessDecodeBox(1)', 1);
return;
}
document.getElementById('decodeBoxWorking').style.display = "none";
document.getElementById('decodeBoxLink').style.display = "inline";
document.encoder.text.value = Process_Text_Done;
}
// If I get adventurous enough, rules about Braille substitutions and
// abbreviations are at
// http://www.brl.org/formats/
// http://brl.org/refdesk/rules/index.html
// Changes quotes, decimal points, numbers, and caps to be escaped
// appropriately.
function Braille_Translate(input)
{
var output = '';
var words = input.split(' ');
for (var wordnum = 0; wordnum < words.length; wordnum ++)
{
var word = words[wordnum];
var word2 = Braille_Remap(word), word3;
var i, flag;
if (wordnum > 0)
output += ' ';
// This violates Rule 1 (General Rules), section B (Contractions
// are not to be used when ... This is due to the complexity of
// determining where word syllables are in just a tiny bit of code.
// Close quotes
i = word.length - 1;
while (i >= 0)
{
var c = word.charAt(i);
if (c == '"')
{
word2 = word2.slice(0, i) + '0' +
word2.slice(i + 1, word2.length);
i = -1;
}
if ((c >= 'a' && c <= 'z') ||
(c >= 'A' && c <= 'Z') ||
(c >= '0' && c <= '9'))
{
i = -1;
}
i --;
}
// Decimal point vs. period. If a number is to either side,
// assume decimal point.
for (i = 0; i < word.length; i ++)
{
if (word.charAt(i) == '.')
{
if ((i > 0 && word.charAt(i - 1) >= '0' &&
word.charAt(i - 1) <= '9') ||
(i < word.length - 1 && word.charAt(i + 1) >= '0' &&
word.charAt(i + 1) <= '9'))
{
word2 = word2.slice(0, i) + '.' +
word2.slice(i + 1, word2.length);
}
}
}
// Escape numbers
// This is the first place things could get inserted.
flag = 0; // Is in alpha mode
word3 = '';
for (i = 0; i < word2.length; i ++)
{
var c = word.charAt(i).toUpperCase();
if (flag == 0)
{
if (c >= '0' && c <= '9')
{
flag = 1;
word3 += '#';
}
}
else if (flag == 1)
{
if (c >= 'A' && c <= 'Z')
{
flag = 0;
word3 += ';';
}
else if (c != ',' && c != ':' && c != '-' && c != '.')
{
// All other punctuation stops number encoding.
flag = 0;
}
}
word3 += word2.charAt(i);
}
word2 = word3;
// Escape caps
// Things could have been inserted before here, so we need to base
// everything on word2.
flag = 0;
word3 = word.toLowerCase();
if (word != word3 && word3 != word.toUpperCase())
{
if (word == word.toUpperCase())
{
// Escape whole word. If only 1 alpha, 1 symbol.
// If more than one letter, 2 symbols.
flag = 0;
for (i = 0; i < word3.length; i ++)
{
if (word3.charAt(i) >= 'a' && word.charAt(i))
{
flag ++;
}
}
if (flag > 1)
{
word2 = ',,' + word2;
}
else
{
word2 = ',' + word2;
}
}
else
{
// Escape just before caps letters
word3 = '';
for (i = 0; i < word2.length; i ++)
{
var c = word2.charAt(i);
if (c >= 'A' && c <= 'Z')
{
word3 += ',';
}
word3 += c;
}
word2 = word3;
}
}
word2 = word2.toLowerCase();
output += word2;
}
return output;
}
function Braille_Remap(c)
{
// Not 100% perfect.
// Mostly taken from http://www.omniglot.com/writing/braille.htm
var From = '1234567890,:.?!"[]()';
var To = 'abcdefghij1245687777';
var c2 = '';
for (var i = 0; i < c.length; i ++)
{
var p = From.indexOf(c.charAt(i));
if (p >= 0)
{
c2 += To.charAt(p);
}
else
{
c2 += c.charAt(i);
}
}
return c2;
}
function Braille_LetterSet()
{
return " a1b'k2l@cif/msp\"e3h9o6r^djg>ntq,*5<-u8v.%[$+x!&;:4\\0z7(_?w]#y)=";
}
function Braille_Image(c)
{
// Character mapping taken from
// http://interglacial.com/~sburke/braille/table.html
// This has differences when compared to Wikipedia
// Char Notes
// --------------------------------------------------
// . Decimal point. A normal period is '4'.
// # Number follows
// , Capital follows. Normal comma is '1'.
// ',,' means the whole word is capitalized.
// ? 'th' contraction. Normal question mark is '5'.
// : 'wh' contraction. Normal semicolon is '2'.
// ! 'the-' prefix or 'the' word. Normal exclamation is '6'.
// 8 'his' or open quotation mark.
// 0 'was' or close quotation mark.
// 7 Bracket or parenthesis.
// Also, numbers should be remapped to a-j (a=1, i=9, j=0)
var LL = Braille_LetterSet();
var p = LL.indexOf(c);
if (p >= 0)
{
var bf = '';
if (p >= 32)
{
p -= 32;
bf = '6' + bf;
}
if (p >= 16)
{
p -= 16;
bf = '5' + bf;
}
if (p >= 8)
{
p -= 8;
bf = '4' + bf;
}
if (p >= 4)
{
p -= 4;
bf = '3' + bf;
}
if (p >= 2)
{
p -= 2;
bf = '2' + bf;
}
if (p >= 1)
{
p -= 1;
bf = '1' + bf;
}
if (bf == '')
{
bf = '_';
}
return '
';
}
return HTMLEscape(c);
}
function L(l)
{
var alpha;
alpha = MakeKeyedAlphabet(document.encoder.key.value);
for (var i = 0; i < l.length; i ++)
{
var idx = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".indexOf(l.charAt(i));
if (idx >= 0)
{
idx = alpha.charAt(idx);
}
else
{
idx = l.charAt(i);
}
document.encoder.text.value += idx;
}
return false;
}
window.setTimeout('start_update()', 100);
// -->