User:Pilaf~enwiki/instaview.js

// Last update: Cacycle 22:26, 22 November 2008 (UTC)

// *** Important security issue: wiki code passed to InstaView MUST be html-escaped (&, <, and > to character entities). Cacycle, 25 August 2014 ***

// Script to embed InstaView in MediaWiki's edit page

$(function(){

if (document.getElementById('editpage-copywarn')) {

var oldPreview = document.getElementById('wpPreview');

var newPreview = document.createElement('input');

newPreview.setAttribute('type', 'button');

newPreview.setAttribute('style', 'font-style: italic');

newPreview.setAttribute('value', 'InstaView');

newPreview.setAttribute('id', 'InstaView');

newPreview.setAttribute('name', 'InstaView');

newPreview.setAttribute('onclick', "InstaView.dump('wpTextbox1', 'InstaViewDump')");

oldPreview.parentNode.insertBefore(newPreview, oldPreview);

oldPreview.parentNode.innerHTML += '

oldPreview.value = 'Classic Preview';

}

});

* InstaView - a Mediawiki to HTML converter in JavaScript

* Version 0.6.1

* Copyright (C) Pedro Fayolle 2005-2006

* http://en.wikipedia.org/wiki/User:Pilaf

* Distributed under the BSD license

* Changelog:

* 0.6.1

* - Fixed problem caused by \r characters

* - Improved inline formatting parser

* 0.6

* - Changed name to InstaView

* - Some major code reorganizations and factored out some common functions

* - Handled conversion of relative links (i.e. /foo)

* - Fixed misrendering of adjacent definition list items

* - Fixed bug in table headings handling

* - Changed date format in signatures to reflect Mediawiki's

* - Fixed handling of :Image:...

* - Updated MD5 function (hopefully it will work with UTF-8)

* - Fixed bug in handling of links inside images

* To do:

* - Better support for

* - Full support for

* - Parser-based (as opposed to RegExp-based) inline wikicode handling (make it one-pass and bullet-proof)

* - Support for templates (through AJAX)

* - Support for coloured links (AJAX)

var InstaView = {}

// options

InstaView.conf =

{

user: {},

wiki: {

lang: 'en',

interwiki: 'ab|aa|af|ak|sq|als|am|ang|ar|an|arc|hy|roa-rup|as|ast|av|ay|az|bm|ba|eu|be|bn|bh|bi|bs|br|bg|my|ca|ch|ce|chr|chy|ny|zh|zh-tw|zh-cn|cho|cv|kw|co|cr|hr|cs|da|dv|nl|dz|en|eo|et|ee|fo|fj|fi|fr|fy|ff|gl|ka|de|got|el|kl|gn|gu|ht|ha|haw|he|hz|hi|ho|hu|is|io|ig|id|ia|ie|iu|ik|ga|it|ja|jv|kn|kr|csb|ks|kk|km|ki|rw|rn|tlh|kv|kg|ko|kj|ku|ky|lo|la|lv|li|ln|lt|jbo|nds|lg|lb|mk|mg|ms|ml|mt|gv|mi|minnan|mr|mh|zh-min-nan|mo|mn|mus|nah|na|nv|ne|se|no|nn|oc|or|om|pi|fa|pl|pt|pa|ps|qu|ro|rm|ru|sm|sg|sa|sc|gd|sr|sh|st|tn|sn|scn|simple|sd|si|sk|sl|so|st|es|su|sw|ss|sv|tl|ty|tg|ta|tt|te|th|bo|ti|tpi|to|tokipona|ts|tum|tr|tk|tw|uk|ur|ug|uz|ve|vi|vo|wa|cy|wo|xh|ii|yi|yo|za|zu',

default_thumb_width: 180

paths: {

articles: '/wiki/',

math: '/math/',

images: '',

images_fallback: 'http://upload.wikimedia.org/wikipedia/commons/',

magnify_icon: 'skins/common/images/magnify-clip.png'

locale: {

user: 'User',

image: 'Image',

category: 'Category',

months: ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']

}

// options with default values or backreferences

with (InstaView.conf) {

user.name = user.name || 'Wikipedian'

user.signature = ''+user.name+''

paths.images = 'http://upload.wikimedia.org/wikipedia/' + wiki.lang + '/'

}

// define constants

InstaView.dump = function(from, to)

{

if (typeof from == 'string') from = document.getElementById(from)

if (typeof to == 'string') to = document.getElementById(to)

to.innerHTML = this.convert(from.value)

}

InstaView.convert = function(wiki)

{

var ll = (typeof wiki == 'string')? wiki.replace(/\r/g,'').split(/\n/): wiki, // lines of wikicode

o='', // output

p=0, // para flag

$r // result of passing a regexp to $()

// some shorthands

function remain() { return ll.length }

function sh() { return ll.shift() } // shift

function ps(s) { o+=s } // push

function f() // similar to C's printf, uses ? as placeholders, ?? to escape question marks

{

var i=1,a=arguments,f=a[0],o='',c,p

for (;i

// allow character escaping

i -= c=f.charAt(p+1)=='?'?1:0

o += f.substring(0,p)+(c?'?':a[i])

f=f.substr(p+1+c)

} else break;

return o+f

}

function html_entities(s) { return s.replace(/&/g,"&").replace(//g,">") }

function max(a,b) { return (a>b)?a:b }

function min(a,b) { return (a

// return the first non matching character position between two strings

function str_imatch(a, b)

{

for (var i=0, l=min(a.length, b.length); i

return i

}

// compare current line against a string or regexp

// if passed a string it will compare only the first string.length characters

// if passed a regexp the result is stored in $r

function $(c) { return (typeof c == 'string') ? (ll[0].substr(0,c.length)==c) : ($r = ll[0].match(c)) }

function $$(c) { return ll[0]==c } // compare current line against a string

function _(p) { return ll[0].charAt(p) } // return char at pos p

function endl(s) { ps(s); sh() }

function parse_list()

{

var prev='';

while (remain() && $(/^([*#:;]+)(.*)$/)) {

var l_match = $r

sh()

var ipos = str_imatch(prev, l_match[1])

// close uncontinued lists

for (var i=prev.length-1; i >= ipos; i--) {

var pi = prev.charAt(i)

if (pi=='*') ps('')

else if (pi=='#') ps('')

// close a dl only if the new item is not a dl item (:, ; or empty)

else switch (l_match[1].charAt(i)) { case'':case'*':case'#': ps('') }

}

// open new lists

for (var i=ipos; i

var li = l_match[1].charAt(i)

if (li=='*') ps('

else if (li=='#') ps('

// open a new dl only if the prev item is not a dl item (:, ; or empty)

else switch(prev.charAt(i)) { case'':case'*':case'#': ps('

') var dt_match // handle ;dt :dd format if (dt_match = l_match[2].match(/(.*?) (:.*?)$/)) { ps(parse_inline_nowiki(dt_match[1])) ll.unshift(dt_match[2]) } else ps(parse_inline_nowiki(l_match[2])) break case ':': ps(': ' + parse_inline_nowiki(l_match[2]))

}

prev=l_match[1]

}

// close remaining lists

for (var i=prev.length-1; i>=0; i--)

ps(f('', (prev.charAt(i)=='*')? 'ul': ((prev.charAt(i)=='#')? 'ol': 'dl')))

}

function parse_table()

{

endl(f('', $(/^\{\|( .*)$/)? $r[1]: ''))

for (;remain();) if ($('|')) switch (_(1)) {

case '}': endl(''); return

case '-': endl(f('', $(/\|-*(.*)/)[1])); break

default: parse_table_data()

}

else if ($('!')) parse_table_data()

else sh()

}

function parse_table_data()

{

var td_line, match_i

// 1: "|+", '|' or '+'

// 2: ??

// 3: attributes ??

// TODO: finish commenting this regexp

var td_match = sh().match(/^(\|\+|\||!)((?:([^[|]*?)\|(?!\|))?(.*))$/)

if (td_match[1] == '|+') ps('
else ps('
if (typeof td_match[3] != 'undefined') {

ps(' ' + td_match[3])

match_i = 4

} else match_i = 2

ps('>')

if (td_match[1] != '|+') {

// use || or !! as a cell separator depending on context

// NOTE: when split() is passed a regexp make sure to use non-capturing brackets

td_line = td_match[match_i].split((td_match[1] == '|')? '||': /(?:\|\||!!)/)

ps(parse_inline_nowiki(td_line.shift()))

while (td_line.length) ll.unshift(td_match[1] + td_line.pop())

} else ps(td_match[match_i])

var tc = 0, td = []

for (;remain(); td.push(sh()))

if ($('|')) {

if (!tc) break // we're at the outer-most level (no nested tables), skip to td parse

else if (_(1)=='}') tc--

}

else if (!tc && $('!')) break

else if ($('{|')) tc++

if (td.length) ps(InstaView.convert(td))

}

function parse_pre()

{

ps('
')

do endl(parse_inline_nowiki(ll[0].substring(1)) + "\n"); while (remain() && $(' '))

ps('
')

}

function parse_block_image()

{

ps(parse_image(sh()))

}

function parse_image(str)

{

// get what's in between "Image:" and ""

var tag = str.substring(InstaView.conf.locale.image.length + 3, str.length - 2);

var width;

var attr = [], filename, caption = '';

var thumb=0, frame=0, center=0;

var align='';

if (tag.match(/\|/)) {

// manage nested links

var nesting = 0;

var last_attr;

for (var i = tag.length-1; i > 0; i--) {

if (tag.charAt(i) == '|' && !nesting) {

last_attr = tag.substr(i+1);

tag = tag.substring(0, i);

break;

} else switch (tag.substr(i-1, 2)) {

case ']]':

nesting++;

i--;

break;

case '[[':

nesting--;

i--;

}

}

attr = tag.split(/\s*\|\s*/);

attr.push(last_attr);

filename = attr.shift();

var w_match;

for (;attr.length; attr.shift())

if (w_match = attr[0].match(/^(\d*)px$/)) width = w_match[1]

else switch(attr[0]) {

case 'thumb':

case 'thumbnail':

thumb=true;

case 'frame':

frame=true;

break;

case 'none':

case 'right':

case 'left':

center=false;

align=attr[0];

break;

case 'center':

center=true;

align='none';

break;

default:

if (attr.length == 1) caption = attr[0];

}

} else filename = tag;

var o='';

if (frame) {

if (align=='') align = 'right';

o += f("
", align);

if (thumb) {

if (!width) width = InstaView.conf.wiki.default_thumb_width;

o += f("
?", 2+width*1, make_image(filename, caption, width)) +

f("
?
",

InstaView.conf.paths.articles + InstaView.conf.locale.image + ':' + filename,

InstaView.conf.paths.magnify_icon,

parse_inline_nowiki(caption)

)

} else {

o += '
' + make_image(filename, caption) + f("
?
", parse_inline_nowiki(caption))

}

o += '
';

} else if (align != '') {

o += f("
?
", align, make_image(filename, caption, width));

} else {

return make_image(filename, caption, width);

}

return center? f("
?
", o): o;

}

function parse_inline_nowiki(str)

{

var start, lastend=0

var substart=0, nestlev=0, open, close, subloop;

var html='';

while (-1 != (start = str.indexOf('', substart))) {

html += parse_inline_wiki(str.substring(lastend, start));

start += 8;

substart = start;

subloop = true;

do {

open = str.indexOf('', substart);

close = str.indexOf('', substart);

if (close<=open || open==-1) {

if (close==-1) {

return html + html_entities(str.substr(start));

}

substart = close+9;

if (nestlev) {

nestlev--;

} else {

lastend = substart;

html += html_entities(str.substring(start, lastend-9));

subloop = false;

}

} else {

substart = open+8;

nestlev++;

}

} while (subloop)

}

return html + parse_inline_wiki(str.substr(lastend));

}

function make_image(filename, caption, width)

{

// uppercase first letter in file name

filename = filename.charAt(0).toUpperCase() + filename.substr(1);

// replace spaces with underscores

filename = filename.replace(/ /g, '_');

caption = strip_inline_wiki(caption);

var md5 = hex_md5(filename);

var source = md5.charAt(0) + '/' + md5.substr(0,2) + '/' + filename;

if (width) width = "width='" + width + "px'";

var img = f("", InstaView.conf.paths.images_fallback + source, InstaView.conf.paths.images + source, (caption!=)? "alt='" + caption + "'" : , width);

return f("?", (caption!=)? "title='" + caption + "'" : , InstaView.conf.paths.articles + InstaView.conf.locale.image + ':' + filename, img);

}

function parse_inline_images(str)

{

var start, substart=0, nestlev=0;

var loop, close, open, wiki, html;

while (-1 != (start=str.indexOf('[[', substart))) {

if(str.substr(start+2).match(RegExp('^' + InstaView.conf.locale.image + ':','i'))) {

loop=true;

substart=start;

do {

substart+=2;

close=str.indexOf(']]',substart);

open=str.indexOf('[[',substart);

if (close<=open||open==-1) {

if (close==-1) return str;

substart=close;

if (nestlev) {

nestlev--;

} else {

wiki=str.substring(start,close+2);

html=parse_image(wiki);

str=str.replace(wiki,html);

substart=start+html.length;

loop=false;

}

} else {

substart=open;

nestlev++;

}

} while (loop)

} else break;

}

return str;

}

// the output of this function doesn't respect the FILO structure of HTML

// but since most browsers can handle it I'll save myself the hassle

function parse_inline_formatting(str)

{

var em,st,i,li,o='';

while ((i=str.indexOf("''",li))+1) {

o += str.substring(li,i);

li=i+2;

if (str.charAt(i+2)=="'") {

li++;

st=!st;

o+=st?'':'';

} else {

em=!em;

o+=em?'':'';

}

}

return o+str.substr(li);

}

function parse_inline_wiki(str)

{

var aux_match;

str = parse_inline_images(str);

str = parse_inline_formatting(str);

// math

while (aux_match = str.match(/<(?:)math>(.*?)<\/math>/i)) {

var math_md5 = hex_md5(aux_match[1]);

str = str.replace(aux_match[0], f("", InstaView.conf.paths.math+math_md5));

}

// Build a Mediawiki-formatted date string

var date = new Date;

var minutes = date.getUTCMinutes();

if (minutes < 10) minutes = '0' + minutes;

var date = f("?:?, ? ? ? (UTC)", date.getUTCHours(), minutes, date.getUTCDate(), InstaView.conf.locale.months[date.getUTCMonth()], date.getUTCFullYear());

// text formatting

return str.

// signatures

replace(/~{5}(?!~)/g, date).

replace(/~{4}(?!~)/g, InstaView.conf.user.name+' '+date).

replace(/~{3}(?!~)/g, InstaView.conf.user.name).

// :Category:..., :Image:..., etc...

replace(RegExp('\\[\\[:((?:'+InstaView.conf.locale.category+'|'+InstaView.conf.locale.image+'|'+InstaView.conf.wiki.interwiki+'):.*?)\\]\\]','gi'), "$1").

replace(RegExp('\\[\\[(?:'+InstaView.conf.locale.category+'|'+InstaView.conf.wiki.interwiki+'):.*?\\]\\]','gi'),'').

// /Relative links

replace(/\[\[(\/[^|]*?)\]\]/g, f("$1", location)).

// Relative links

replace(/\[\[(\/.*?)\|(.+?)\]\]/g, f("$2", location)).

// Common links

replace(/\[\[([^|]*?)\]\](\w*)/g, f("$1$2", InstaView.conf.paths.articles)).

// Links

replace(/\[\[(.*?)\|([^\]]+?)\]\](\w*)/g, f("$2$3", InstaView.conf.paths.articles)).

// Namespace

replace(/\[\[([^\]]*?:)?(.*?)( *$.*?$)?\|\]\]/g, f("$2", InstaView.conf.paths.articles)).

// External links

replace(/\[(https?|news|ftp|mailto|gopher|irc):(\/*)([^\]]*?) (.*?)\]/g, "$4").

replace(/\[http:\/\/(.*?)\]/g, "[#]").

replace(/\[(news|ftp|mailto|gopher|irc):(\/*)(.*?)\]/g, "$1:$2$3").

replace(/(^| )(https?|news|ftp|mailto|gopher|irc):(\/*)([^ $]*)/g, "$1$2:$3$4").

replace('__NOTOC__','').

replace('__NOEDITSECTION__','');

}

function strip_inline_wiki(str)

{

return str

.replace(/\[\^\*\|(.*?)\]\]/g,'$1')

.replace(/\[\[(.*?)\]\]/g,'$1')

.replace(/(.*?)/g,'$1');

}

// begin parsing

for (;remain();) if ($(/^(={1,6})(.*)\1(.*)$/)) {

p=0

endl(f('??', $r[1].length, parse_inline_nowiki($r[2]), $r[1].length, $r[3]))

} else if ($(/^[*#:;]/)) {

p=0

parse_list()

} else if ($(' ')) {

p=0

parse_pre()

} else if ($('{|')) {

p=0

parse_table()

} else if ($(/^----+$/)) {

p=0

endl('
')

} else if ($(InstaView.BLOCK_IMAGE)) {

p=0

parse_block_image()

} else {

// handle paragraphs

if ($$('')) {

if (p = (remain()>1 && ll[1]==(''))) endl('

')

} else {

if(!p) {

ps('
')

p=1

}

ps(parse_inline_nowiki(ll[0]) + ' ')

}

sh();

}

return o

}

/*

* A JavaScript implementation of the RSA Data Security, Inc. MD5 Message

* Digest Algorithm, as defined in RFC 1321.

* Version 2.2-alpha Copyright (C) Paul Johnston 1999 - 2005

* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet

* Distributed under the BSD License

* See http://pajhome.org.uk/crypt/md5 for more info.

*/

/*

* Configurable variables. You may need to tweak these to be compatible with

* the server-side, but the defaults work in most cases.

*/

var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */

var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */

/*

* These are the functions you'll usually want to call

* They take string arguments and return either hex or base-64 encoded strings

*/

function hex_md5(s) { return rstr2hex(rstr_md5(str2rstr_utf8(s))); }

function b64_md5(s) { return rstr2b64(rstr_md5(str2rstr_utf8(s))); }

function any_md5(s, e) { return rstr2any(rstr_md5(str2rstr_utf8(s)), e); }

function hex_hmac_md5(k, d)

{ return rstr2hex(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d))); }

function b64_hmac_md5(k, d)

{ return rstr2b64(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d))); }

function any_hmac_md5(k, d, e)

{ return rstr2any(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d)), e); }

/*

* Calculate the MD5 of a raw string

*/

function rstr_md5(s)

{

return binl2rstr(binl_md5(rstr2binl(s), s.length * 8));

}

/*

* Calculate the HMAC-MD5, of a key and some data (raw strings)

*/

function rstr_hmac_md5(key, data)

{

var bkey = rstr2binl(key);

if(bkey.length > 16) bkey = binl_md5(bkey, key.length * 8);

var ipad = Array(16), opad = Array(16);

for(var i = 0; i < 16; i++)

{

ipad[i] = bkey[i] ^ 0x36363636;

opad[i] = bkey[i] ^ 0x5C5C5C5C;

}

var hash = binl_md5(ipad.concat(rstr2binl(data)), 512 + data.length * 8);

return binl2rstr(binl_md5(opad.concat(hash), 512 + 128));

}

/*

* Convert a raw string to a hex string

*/

function rstr2hex(input)

{

var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";

var output = "";

var x;

for(var i = 0; i < input.length; i++)

{

x = input.charCodeAt(i);

output += hex_tab.charAt((x >>> 4) & 0x0F)

+ hex_tab.charAt( x & 0x0F);

}

return output;

}

/*

* Convert a raw string to a base-64 string

*/

function rstr2b64(input)

{

var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

var output = "";

var len = input.length;

for(var i = 0; i < len; i += 3)

{

var triplet = (input.charCodeAt(i) << 16)

| (i + 1 < len ? input.charCodeAt(i+1) << 8 : 0)

| (i + 2 < len ? input.charCodeAt(i+2) : 0);

for(var j = 0; j < 4; j++)

{

if(i * 8 + j * 6 > input.length * 8) output += b64pad;

else output += tab.charAt((triplet >>> 6*(3-j)) & 0x3F);

}

}

return output;

}

/*

* Convert a raw string to an arbitrary string encoding

*/

function rstr2any(input, encoding)

{

var divisor = encoding.length;

var remainders = Array();

var i, q, x, quotient;

/* Convert to an array of 16-bit big-endian values, forming the dividend */

var dividend = Array(input.length / 2);

for(i = 0; i < dividend.length; i++)

{

dividend[i] = (input.charCodeAt(i * 2) << 8) | input.charCodeAt(i * 2 + 1);

}

/*

* Repeatedly perform a long division. The binary array forms the dividend,

* the length of the encoding is the divisor. Once computed, the quotient

* forms the dividend for the next step. We stop when the dividend is zero.

* All remainders are stored for later use.

*/

while(dividend.length > 0)

{

quotient = Array();

x = 0;

for(i = 0; i < dividend.length; i++)

{

x = (x << 16) + dividend[i];

q = Math.floor(x / divisor);

x -= q * divisor;

if(quotient.length > 0 || q > 0)

quotient[quotient.length] = q;

}

remainders[remainders.length] = x;

dividend = quotient;

}

/* Convert the remainders to the output string */

var output = "";

for(i = remainders.length - 1; i >= 0; i--)

output += encoding.charAt(remainders[i]);

return output;

}

/*

* Encode a string as utf-8.

* For efficiency, this assumes the input is valid utf-16.

*/

function str2rstr_utf8(input)

{

var output = "";

var i = -1;

var x, y;

while(++i < input.length)

{

/* Decode utf-16 surrogate pairs */

x = input.charCodeAt(i);

y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0;

if(0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF)

{

x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);

i++;

}

/* Encode output as utf-8 */

if(x <= 0x7F)

output += String.fromCharCode(x);

else if(x <= 0x7FF)

output += String.fromCharCode(0xC0 | ((x >>> 6 ) & 0x1F),

0x80 | ( x & 0x3F));

else if(x <= 0xFFFF)

output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F),

0x80 | ((x >>> 6 ) & 0x3F),

0x80 | ( x & 0x3F));

else if(x <= 0x1FFFFF)

output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07),

0x80 | ((x >>> 12) & 0x3F),

0x80 | ((x >>> 6 ) & 0x3F),

0x80 | ( x & 0x3F));

}

return output;

}

/*

* Encode a string as utf-16

*/

function str2rstr_utf16le(input)

{

var output = "";

for(var i = 0; i < input.length; i++)

output += String.fromCharCode( input.charCodeAt(i) & 0xFF,

(input.charCodeAt(i) >>> 8) & 0xFF);

return output;

}

function str2rstr_utf16be(input)

{

var output = "";

for(var i = 0; i < input.length; i++)

output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF,

input.charCodeAt(i) & 0xFF);

return output;

}

/*

* Convert a raw string to an array of little-endian words

* Characters >255 have their high-byte silently ignored.

*/

function rstr2binl(input)

{

var output = Array(input.length >> 2);

for(var i = 0; i < output.length; i++)

output[i] = 0;

for(var i = 0; i < input.length * 8; i += 8)

output[i>>5] |= (input.charCodeAt(i / 8) & 0xFF) << (i%32);

return output;

}

/*

* Convert an array of little-endian words to a string

*/

function binl2rstr(input)

{

var output = "";

for(var i = 0; i < input.length * 32; i += 8)

output += String.fromCharCode((input[i>>5] >>> (i % 32)) & 0xFF);

return output;

}

/*

* Calculate the MD5 of an array of little-endian words, and a bit length.

*/

function binl_md5(x, len)

{

/* append padding */

x[len >> 5] |= 0x80 << ((len) % 32);

x[(((len + 64) >>> 9) << 4) + 14] = len;

var a = 1732584193;

var b = -271733879;

var c = -1732584194;

var d = 271733878;

for(var i = 0; i < x.length; i += 16)

{

var olda = a;

var oldb = b;

var oldc = c;

var oldd = d;

a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);

d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);

c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819);

b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);

a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);

d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426);

c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);

b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);

a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416);

d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);

c = md5_ff(c, d, a, b, x[i+10], 17, -42063);

b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);

a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682);

d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);

c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);

b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);

a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);

d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);

c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);

b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);

a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);

d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083);

c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);

b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);

a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438);

d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);

c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);

b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501);

a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);

d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);

c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473);

b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);

d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);

c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);

b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);

a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);

d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353);

c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);

b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);

a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174);

d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);

c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);

b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);

a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);

d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);

c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);

b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);

d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415);

c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);

b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);

a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571);

d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);

c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);

b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);

a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359);

d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);

c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);

b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);

a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);

d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);

c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259);

b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

a = safe_add(a, olda);

b = safe_add(b, oldb);

c = safe_add(c, oldc);

d = safe_add(d, oldd);

}

return Array(a, b, c, d);

}

/*

* These functions implement the four basic operations the algorithm uses.

*/

function md5_cmn(q, a, b, x, s, t)

{

return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);

}

function md5_ff(a, b, c, d, x, s, t)

{

return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);

}

function md5_gg(a, b, c, d, x, s, t)

{

return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);

}

function md5_hh(a, b, c, d, x, s, t)

{

return md5_cmn(b ^ c ^ d, a, b, x, s, t);

}

function md5_ii(a, b, c, d, x, s, t)

{

return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);

}

/*

* Add integers, wrapping at 2^32. This uses 16-bit operations internally

* to work around bugs in some JS interpreters.

*/

function safe_add(x, y)

{

var lsw = (x & 0xFFFF) + (y & 0xFFFF);

var msw = (x >> 16) + (y >> 16) + (lsw >> 16);

return (msw << 16) | (lsw & 0xFFFF);

}

/*

* Bitwise rotate a 32-bit number to the left.

*/

function bit_rol(num, cnt)

{

return (num << cnt) | (num >>> (32 - cnt));

}

//