User:Paul Robinson/livepreview.js

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// Last update: 21:51, 15 Feb 2005 (UTC)
 
// Script to embed Live Preview in MediaWiki's edit page
function LivePreviewInstall()
{
 copywarn = document.getElementById('editpage-copywarn');
 if (copywarn != null) {
  var cleaner = "<br style=\\'clear:both;\\' />";
  LivePreviewHTML = '<input type="button" value="Live Preview" onclick="document.getElementById(\'PreviewBox\').innerHTML = wiki2html(editform.wpTextbox1.value) + \'' + cleaner + '\';" />';
  //LivePreviewHTML = '<input type="button" value="Live Preview" onclick="document.getElementById(\'PreviewBox\').innerHTML = wiki2html(editform.wpTextbox1.value);" />';
  LivePreviewHTML += '<div style="margin-top: 5px; margin-bottom: 5px; padding: 5px; border: 3px double orange;" id="PreviewBox"></div>';
  copywarn.innerHTML = LivePreviewHTML + copywarn.innerHTML;
 }
}
 
// User options
var wpUserName=wpUserName||'Wikipedian';
var wpUserSignature=wpUserSignature||wpUserName;
var wpShowImages=wpShowImages||true;
 
// System options
var wpLanguageCode=wpLanguageCode||'en';
var wpInterwikiCodes=wpInterwikiCodes||'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';
var wpBaseArticlePath=wpBaseArticlePath||'/wiki/';
var wpMathBasePath=wpMathBasePath||'/math/';
var wpImageBasePath=wpImageBasePath||'http://upload.wikimedia.org/wikipedia/'+wpLanguageCode+'/';
var wpImageFallbackPath=wpImageFallbackPath||'http://upload.wikimedia.org/wikipedia/commons/';
var wpDefaultThumbWidth=wpDefaultThumbWidth||180;
var wpSkinMagnifyClip=wpSkinMagnifyClip||'/skins/common/images/magnify-clip.png';
var wpUserNamespace=wpUserNamespace||'User';
var wpImageNamespace=wpImageNamespace||'Image';
var wpCategoryNamespace=wpCategoryNamespace||'Category';
 
// Packed code (DO NOT MODIFY)
function wiki2html(str)
{str=strip_cr(str);var w=new WikiCode();w.lines=str.split(/\n/);w.parse();return w.html;};var wpSignature='[['+wpUserNamespace+':'+wpUserName+'|'+wpUserSignature+']]';var wpBlockImage=new RegExp('^\\[\\['+wpImageNamespace+':.*?\\|.*?(?:frame|thumbnail|thumb|none|right|left|center)','i');function WikiCode()
{this.lines=new Array;this.html=new String;this._endline=function(str)
{this.html+=str;this.lines.shift();};this.parse=function()
{var p=false;do{if(h_match=this.lines[0].match(/^(={1,6})(.*)\1(.*)$/)){p=false;this._endline('<h'+h_match[1].length+'>'+_parse_inline_nowiki(h_match[2])+'</h'+h_match[1].length+'>'+h_match[3]);}else if(this.lines[0].match(/^[*#:;]/)){p=false;this._parse_list();}else if(this.lines[0].charAt(0)==' '){p=false;this._parse_pre();}else if(this.lines[0].substr(0,2)=='{|'){p=false;this._parse_table();}else if(this.lines[0].match(/^----+$/)){p=false;this._endline('<hr/>');}else if(this.lines[0].match(wpBlockImage)){p=false;this._parse_block_image();}else{if(this.lines[0]==''){if(p=(this.lines.length>1&&this.lines[1]=='')){this._endline('<p><br />');}}else{if(!p){this.html+='<p>';p=true;}
this.html+=_parse_inline_nowiki(this.lines[0])+' ';}
this.lines.shift();}}while(this.lines.length);};this._parse_list=function(){var prev=new String;var l_match,imatch,dt_match;while(this.lines.length&&(l_match=this.lines[0].match(/^([*#:;]+)(.*)$/))){this.lines.shift();imatch=str_imatch(prev,l_match[1]);for(var i=prev.length-1;i>=imatch;i--){if(prev.charAt(i)=='*'){this.html+='</ul>';}else if(prev.charAt(i)=='#'){this.html+='</ol>'}else{this.html+='</d'+((prev.charAt(i)==';')?'t':'d')+'>';switch(l_match[1].charAt(i)){case'':case'*':case'#':this.html+='</dl>';}}}
for(var i=imatch;i<l_match[1].length;i++){if(l_match[1].charAt(i)=='*'){this.html+='<ul>';}else if(l_match[1].charAt(i)=='#'){this.html+='<ol>';}else{switch(prev.charAt(i)){case'':case'*':case'#':this.html+='<dl>';}
this.html+='<d'+((l_match[1].charAt(i)==';')?'t':'d')+'>';}}
switch(l_match[1].charAt(l_match[1].length-1)){case'*':case'#':this.html+='<li>'+_parse_inline_nowiki(l_match[2]);break;case';':if(dt_match=l_match[2].match(/(.*?) (:.*?)$/)){this.html+=_parse_inline_nowiki(dt_match[1]);this.lines.unshift(dt_match[2]);break;}
case':':this.html+=_parse_inline_nowiki(l_match[2]);}
prev=l_match[1];}
for(i=prev.length-1;i>=0;i--){if(prev.charAt(i)=='*'){this.html+='</ul>';}else if(prev.charAt(i)=='#'){this.html+='</ol>';}else{this.html+='</d'+((prev.charAt(i)==';')?'t':'d')+'></dl>';}}};this._parse_table=function()
{var table_match;if(table_match=this.lines[0].match(/^\{\|( .*)$/)){this._endline('<table'+table_match[1]+'>');}else this._endline('<table>');do{if(this.lines[0].charAt(0)=='|'){switch(this.lines[0].charAt(1)){case'}':this._endline('</table>');return;case'-':this._endline('<tr '+this.lines[0].match(/\|-*(.*)/)[1]+'>');break;default:this._parse_table_data();}}else if(this.lines[0].charAt(0)=='!'){this._parse_table_data();}else{this.lines.shift();}}while(this.lines.length)};this._parse_table_data=function()
{var td_match,td_line;td_match=this.lines.shift().match(/^(\|\+|\||!)((?:([^[|]*?)\|(?!\|))?(.*))$/);if(td_match[1]=='|+'){this.html+='<caption';}else{this.html+='<t'+((td_match[1]=='|')?'d':'h');}
if(typeof td_match[3]!='undefined'){this.html+=' '+td_match[3];td_line=td_match[4].split('||');}else{td_line=td_match[2].split('||');}
this.html+='>';while(td_line.length>1){this.lines.unshift(td_match[1]+td_line.pop());}
this.html+=_parse_inline_nowiki(td_line[0]);var td=new WikiCode;var table_count=0;while(this.lines.length){if(this.lines[0].charAt(0)=='|'){if(table_count==0)break;else if(this.lines[0].charAt(1)=='}')table_count--;}else if(this.lines[0].charAt(0)=='!'&&table_count==0){break;}else if(this.lines[0].substr(0,2)=='{|')table_count++;td.lines.push(this.lines.shift());}
if(td.lines.length){td.parse();}
this.html+=td.html;};this._parse_pre=function()
{this.html+='<pre>';do{this._endline(_parse_inline_nowiki(this.lines[0].substring(1,this.lines[0].length))+"\n");}while(this.lines.length&&this.lines[0].charAt(0)==' ');this.html+='</pre>';};this._parse_block_image=function()
{this.html+=_parse_image(this.lines.shift());};};function _parse_image(str)
{var attr=str.substring(wpImageNamespace.length+3,str.length-2).split(/\s*\|\s*/);var filename=attr[0];var caption=attr[attr.length-1];var width,w_match;var thumb=false;var frame=false;var center=false;var align='';var html='';do{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';}
attr.shift();}while(attr.length);if(frame){if(align=='')align='right';html+="<div class='thumb t"+align+"'>";if(thumb){if(!width)width=wpDefaultThumbWidth;html+="<div style='width:"+(2+parseInt(width))+"px;'>";html+=_make_image(filename,caption,width);html+="<div class='thumbcaption'><div class='magnify' style='float:right'><a href='"+wpBaseArticlePath+wpImageNamespace+':'+filename+"' class='internal' title='Enlarge'><img src='"+wpSkinMagnifyClip+"' /></a></div>"+_parse_inline_nowiki(caption)+"</div>";}else{html+='<div>';html+=_make_image(filename,caption);html+="<div class='thumbcaption'>"+_parse_inline_nowiki(caption)+"</div>";}
html+='</div></div>';}else if(align!=''){html+="<div class='float"+align+"'><span>"+_make_image(filename,caption,width)+"</span></div>";}else{return _make_image(filename,caption,width);}
if(center){return"<div class='center'>"+html+'</div>';}else{return html;}};this._parse_inline_nowiki=function(str)
{var start,lastend=0
var substart=0,nestlev=0,open,close,subloop;var html='';while(-1!=(start=str.indexOf('<'+'nowiki>',substart))){html+=_parse_inline_wiki(str.substring(lastend,start));start+=8;substart=start;subloop=true;do{open=str.indexOf('<'+'nowiki>',substart);close=str.indexOf('</nowiki>',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)
{filename=filename.charAt(0).toUpperCase()+filename.substr(1);filename=filename.replace(/ /g,'_');var md5=hex_md5(filename);var source=md5.charAt(0)+'/'+md5.substr(0,2)+'/'+filename;var img;if(wpShowImages){if(width){width="width='"+width+"px'";}
img="<img onerror='this.onerror=null;this.src=\""+wpImageFallbackPath+source+"\";' src='"+wpImageBasePath+source+"' alt='"+caption+"' "+width+"/>";}else{img=wpImageNamespace+':'+filename+" <em style='color:red;'>(images disabled)</em>";}
caption=_strip_inline_wiki(caption);return"<a class='image' title='"+caption+"' href='"+wpBaseArticlePath+wpImageNamespace+':'+filename+"'>"+img+"</a>";};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('^'+wpImageNamespace+':','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;};function _parse_inline_wiki(str)
{var aux_match,math_md5;str=_parse_inline_images(str);while(aux_match=str.match(/<(?:)math>(.*?)<\/math>/i)){math_md5=hex_md5(aux_match[1]);str=str.replace(aux_match[0],"<img src='"+wpMathBasePath+math_md5+'.png'+"' />");}
return str.replace(/'''''(.*?)''(.*?)'''/g,'<strong><em>$1</em>$2</strong>').replace(/'''''(.*?)'''(.*?)''/g,'<em><strong>$1</strong>$2</em>').replace(/'''(.*?)''(.*?)'''''/g,'<strong>$1<em>$2</em></strong>').replace(/'''(.*?)'''/g,'<strong>$1</strong>').replace(/''(.*?)''/g,'<em>$1</em>').replace(/~{5}(?!~)/g,Date()).replace(/~{4}(?!~)/g,wpSignature+' '+Date()).replace(/~{3}(?!~)/g,wpSignature).replace(RegExp('\\[\\[:((?:'+wpCategoryNamespace+'|'+wpInterwikiCodes+'):.*?)\\]\\]','gi'),"<a href='"+wpBaseArticlePath+"$1'>$1</a>").replace(RegExp('\\[\\[(?:'+wpCategoryNamespace+'|'+wpInterwikiCodes+'):.*?\\]\\]','gi'),'').replace(/\[\[([^|]*?)\]\](\w*)/g,"<a href='"+wpBaseArticlePath+"$1'>$1$2</a>").replace(/\[\[(.*?)\|([^\]]+?)\]\](\w*)/g,"<a href='"+wpBaseArticlePath+"$1'>$2$3</a>").replace(/\[\[([^\]]*?:)?(.*?)( *\(.*?\))?\|\]\]/g,"<a href='"+wpBaseArticlePath+"$1$2$3'>$2</a>").replace(/\[(http|news|ftp|mailto|gopher|irc):(\/*)([^\]]*?) (.*?)\]/g,"<a href='$1:$2$3'>$4</a>").replace(/\[http:\/\/(.*?)\]/g,"<a href='http://$1'>[#]</a>").replace(/\[(news|ftp|mailto|gopher|irc):(\/*)(.*?)\]/g,"<a href='$1:$2$3'>$1:$2$3</a>").replace(/(^| )(http|news|ftp|mailto|gopher|irc):(\/*)([^ $]*)/g,"$1<a href='$2:$3$4'>$2:$3$4</a>").replace('__NOTOC__','').replace('__NOEDITSECTION__','');};function _strip_inline_wiki(str)
{return str.replace(/\[\[[^\]]*\|(.*?)\]\]/g,'$1').replace(/\[\[(.*?)\]\]/g,'$1').replace(/''(.*?)''/g,'$1');};function max(a,b)
{if(a>b)return a;else return b;};function min(a,b)
{if(a<b)return a;else return b;};function str_imatch(str_a,str_b)
{var lim=min(str_a.length,str_b.length);for(var i=0;i<lim;i++){if(str_a.charAt(i)!=str_b.charAt(i))return i;}
return i;};function strip_cr(str)
{return str.replace(/\n\r/g,"\n").replace(/\r/g,'');};function html_entities(str)
{return str.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;");};var chrsz=8;var hex_tab="0123456789abcdef";function hex_md5(s){return binl2hex(core_md5(str2binl(s),s.length*chrsz));};function core_md5(x,len)
{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);};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);};function safe_add(x,y)
{var lsw=(x&0xFFFF)+(y&0xFFFF);var msw=(x>>16)+(y>>16)+(lsw>>16);return(msw<<16)|(lsw&0xFFFF);};function bit_rol(num,cnt)
{return(num<<cnt)|(num>>>(32-cnt));};function str2binl(str)
{var bin=Array();var mask=(1<<chrsz)-1;for(var i=0;i<str.length*chrsz;i+=chrsz)
bin[i>>5]|=(str.charCodeAt(i/chrsz)&mask)<<(i%32);return bin;};function binl2hex(binarray)
{var str='';for(var i=0;i<binarray.length*4;i++)
{str+=hex_tab.charAt((binarray[i>>2]>>((i%4)*8+4))&0xF)+
hex_tab.charAt((binarray[i>>2]>>((i%4)*8))&0xF);}
return str;}; // </math>