Currently the opera browser people are using this
script. Would it be faster than what is currently implemented?
Code:
// ==UserScript==
// @name Linkify text files
// @author Arve Bersvendsen
// @namespace http://userjs.org/
// @version 1.4.1
// @description Improves display of text files by making
// http/https/ftp URLs in text documents
// clickable.
// @ujs:category browser: enhancements
// @ujs:published 2005-10-25 21:12
// @ujs:modified 2005-10-25 22:13
// @ujs:documentation http://userjs.org/scripts/browser/enhancements/linkify-text-files
// @ujs:download http://userjs.org/scripts/download/browser/enhancements/linkify-txt.js
// @include *
// ==/UserScript==
/*
* Copyright © 2005 by Arve Bersvendsen
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
// Enable the script if we're displaying txt, css, js, and nfo files
if (window.location.PRXhref.match(/\.(txt|js|css|nfo)$/i) ){
// Cannot check directly on top, since that will throw errors
// for all inline frames living on a different server; AdSense ads
document.addEventListener('load',function(e){
//option - show a "reformatting" notice - set to false to disable
var showNotice = true;
// Test to see that we're actually using this
// on documents Opera are displaying as text
if( (document.body) && (document.body.childNodes.length == 1) && (document.body.firstChild.nodeName == "PRE")){
var self=this;
this.toggleNumbers = function(){
if (document.getElementById('ol').className == "not_numbered"){
document.getElementById('ol').className = "numbered";
} else {
document.getElementById('ol').className = "not_numbered";
}
}
this.highlightRow = function(){
var li, lists =document.getElementsByTagName("li");
var num = prompt("Go to line:")-1;
if (lists[num]) {
for (var i = 0; li = lists[i]; i++) {
li.removeAttribute("class");
}
lists[num].setAttribute("class","highlight");
window.scrollTo(0,lists[num].offsetTop);
// force Reflow:
document.body.className = document.body.className;
}
}
String.prototype.rStrip = function(){
var endval = "";
var link = arguments[0];
// try to deal with ampersands, quotes and similar in a nice fashion
if (link.substr(-6).indexOf(""") != -1) {
endval = """
link = link.substring(0,link.length-6);
} else if (link.substr(-4).indexOf(">") != -1) {
endval = ">"
link = link.substring(0,link.length-4);
} else if (link.substr(-1).match(/[,.!?\)\']$/)) {
endval = link.substr(-1);
if (link.substr(-7,6).indexOf(""") != -1) {
endval = """+endval;
link = link.substring(0,link.length-7);
} else if (link.substr(-5,4).indexOf(">") != -1) {
endval = ">"+endval;
link = link.substring(0,link.length-5);
} else {
link = link.substring(0,link.length-1);
}
}
return "<a href=\""+link+"\">"+link+"</a>"+endval;
}
// get original white-space. Used for a terrible hack to prevent
// blank lines on copy/paste operations
var whitespace = getComputedStyle(document.getElementsByTagName('pre')[0]).whiteSpace;
// Append style sheet
var style = (
"pre,ol,li { white-space: normal;}\n"
+ "span { white-space: "+whitespace+"; color: black; }\n"
+ "span,ol,li {line-height:inherit; }\n"
+ "li { color: #999; }\n"
+ "span { color: #000; display:inline}\n"
+ "ol.not_numbered { margin: 0; padding: 0 }\n"
+ "ol.not_numbered li { display: block}\n"
+ "ol.numbered li { display: list-item}\n"
+ "li.highlight { background: #eee;}"
);
var s = document.createElement("style");
var s_content = document.createTextNode(style);
s.appendChild(s_content);
document.documentElement.appendChild(s);
// Append clickable wave
var mode = document.createElement("a");
mode.style="position: fixed; top: 0; right: 0; padding: 0.2em; border: solid black; border-width: 0 0 1px 1px;";
mode.addEventListener("click",self.toggleNumbers,false);
s_content = document.createTextNode("\u21D4");
mode.appendChild(s_content);
document.body.appendChild(mode);
// Append reformatting notice
if( showNotice ) {
var showNotice = document.createElement("div");
showNotice.style="position: fixed; top: 50%; left: 50%; margin: -1em 0 0 -6em; padding: 0.2em; border: 1px solid black; background-color: #ddd;";
showNotice.appendChild(document.createTextNode('Reformatting and finding links.'));
showNotice.appendChild(document.createElement('br'));
showNotice.appendChild(document.createTextNode('Please wait ...'));
document.body.appendChild(showNotice);
}
// Search for http/https/ftp URLs and make them clickable
// Wrap a line around every line
var urlRegex = /\b(((https?|ftp|irc|telnet|nntp|gopher|file):\/\/|(mailto|news|data):)[^\s\"<>\{\}\'\(\)]*)/g;
var doc = document.getElementsByTagName('pre')[0];
doc.innerHTML = "<ol id=\"ol\" class=\"not_numbered\">"+doc.innerHTML.replace(/\%0C/g,"
").replace(/([^\r\n]*)(\r?\n|\r)/gi,"<li><span>$1 </span></li>").replace(urlRegex,RegExp.$1.rStrip)+"</ol>";
if( showNotice ) { showNotice.parentNode.removeChild(showNotice); }
// Listen to the "l" key to toggle line number visibility
document.onkeypress=function(e){
switch (e.keyCode) {
case 103:
self.highlightRow();
break;
case 108:
self.toggleNumbers();
break;
default:
break;
}
}
}
},false)
}
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