From 1c6c114ee9c716f3dba8e31ec281e556ca99a08a Mon Sep 17 00:00:00 2001
From: umbrae <umbrae@d4e419ec-0920-11de-bbfd-a7c1bc4c261e>
Date: Thu, 5 Mar 2009 15:45:51 +0000
Subject: Adding the 0.1 source to trunk

git-svn-id: http://arc90labs-readability.googlecode.com/svn/trunk@2 d4e419ec-0920-11de-bbfd-a7c1bc4c261e
---
 js/readability-0.1.js | 149 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100755 js/readability-0.1.js

(limited to 'js/readability-0.1.js')

diff --git a/js/readability-0.1.js b/js/readability-0.1.js
new file mode 100755
index 0000000..5b153df
--- /dev/null
+++ b/js/readability-0.1.js
@@ -0,0 +1,149 @@
+(function(){
+	var objOverlay = document.createElement("div");
+	var objinnerDiv = document.createElement("div");
+
+	objOverlay.id = "readOverlay";
+	objinnerDiv.id = "readInner";
+	
+	// Apply user-selected styling:
+	document.body.className = readStyle;
+	objOverlay.className = readStyle;
+	objinnerDiv.className = readMargin + " " + readSize;
+	
+	objinnerDiv.appendChild(grabArticle());		// Get the article and place it inside the inner Div
+	objOverlay.appendChild(objinnerDiv);		// Insert the inner div into the overlay
+	
+	// This removes everything else on the page. Requires a page refresh to undo it.
+	// I tried the damn overlay on top - but had rendering issues:
+	document.body.innerHTML = "";
+	
+	// Inserts the new content :
+	document.body.insertBefore(objOverlay, document.body.firstChild);
+})()
+
+function grabArticle() {
+	var allParagraphs = document.getElementsByTagName("p");
+	var topDivCount = 0;
+	var topDiv;
+	var topDivParas;
+	
+	var articleContent = document.createElement("DIV");
+	var articleTitle = document.createElement("H1");
+	var articleFooter = document.createElement("DIV");
+	
+	// Replace all doubled-up <BR> tags with <P> tags :
+	var pattern =  new RegExp ("<br/?>[ \r\n\s]*<br/?>", "g");
+	document.body.innerHTML = document.body.innerHTML.replace(pattern, "</p><p>");
+	
+	// Grab the title from the <title> tag and inject it as the title.
+	articleTitle.innerHTML = document.title;
+	articleContent.appendChild(articleTitle);
+	
+	// Study all the paragraphs and find the chunk that has the most <p>'s and keep it:
+	for (var j=0; j	< allParagraphs.length; j++) {
+		var tempParas = allParagraphs[j].parentNode.getElementsByTagName("p");
+	
+		if ( tempParas.length > topDivCount && getCharCount(allParagraphs[j].parentNode) >= tempParas.length ) {
+			topDivCount = tempParas.length;
+			topDiv = allParagraphs[j].parentNode;
+		}
+	}
+	
+	// REMOVES ALL STYLESHEETS ...
+	for (var k=0;k < document.styleSheets.length; k++) {
+		if (document.styleSheets[k].href != null && document.styleSheets[k].href.lastIndexOf("arc90.com/experiments/readability") == -1) {
+			document.styleSheets[k].disabled = true;
+		}
+	}
+	// Remove all style tags in head (not doing this on IE) :
+	var styleTags = document.getElementsByTagName("style");
+	for (var j=0;j < styleTags.length; j++) {
+		if (navigator.appName != "Microsoft Internet Explorer") {
+			styleTags[j].textContent = "";
+		}		
+	}
+
+	cleanStyles(topDiv);					// Removes all style attributes
+	topDiv = killDivs(topDiv);				// Goes in and removes DIV's that have more non <p> stuff than <p> stuff
+	
+	// Cleans out junk from the topDiv just in case:
+	topDiv = clean(topDiv, "form");
+	topDiv = clean(topDiv, "object");
+	topDiv = clean(topDiv, "table");
+	topDiv = clean(topDiv, "h1");
+	topDiv = clean(topDiv, "h2");
+	topDiv = clean(topDiv, "iframe");
+	
+	// Add the footer and contents:
+	articleFooter.id = "readFooter";
+	articleFooter.innerHTML = "<a href='http://www.arc90.com'><img src='http://lab.arc90.com/experiments/readability/images/footer.png'></a>";
+	
+	articleContent.appendChild(topDiv);
+	articleContent.appendChild(articleFooter);
+
+	return articleContent;
+}
+
+// Get character count
+function getCharCount ( e,s ) {
+    s = s || ",";
+	if (navigator.appName == "Microsoft Internet Explorer") {
+		return parentContent = e.innerText.split(',').length;
+	}
+	else {
+		return parentContent = e.textContent.split(',').length;
+	}
+}
+
+function cleanStyles( e ) {
+    e = e || document;
+    var cur = e.firstChild;
+
+    // Go until there are no more child nodes
+    while ( cur != null ) {
+		if ( cur.nodeType == 1 ) {
+			// Remove style attribute(s) :
+			cur.removeAttribute("style");
+			cleanStyles( cur );
+		}
+		cur = cur.nextSibling;
+	}
+}
+
+function killDivs ( e ) {
+	var divsList = e.getElementsByTagName( "div" );
+	var curDivLength = divsList.length;
+	
+	// Gather counts for other typical elements embedded within :
+	for (var i=0; i < curDivLength; i ++) {
+		var p = divsList[i].getElementsByTagName("p").length;
+		var img = divsList[i].getElementsByTagName("img").length;
+		var li = divsList[i].getElementsByTagName("li").length;
+		var a = divsList[i].getElementsByTagName("a").length;
+		var embed = divsList[i].getElementsByTagName("embed").length;
+
+	// If the number of commas is less than 10 (bad sign) ...
+	if ( getCharCount(divsList[i]) < 10) {
+			// And the number of non-paragraph elements is more than paragraphs 
+			// or other ominous signs :
+			if ( img > p || li > p || a > p || p == 0 || embed > 0) {
+				divsList[i].style.display = "none";
+			}
+		}
+	}
+	return e;
+}
+
+function clean(e, tags, minWords) {
+	var targetList = e.getElementsByTagName( tags );
+	minWords = minWords || 1000000;
+
+	for (var y=0; y < targetList.length; y++) {
+		// If the text content isn't laden with words, remove the child:
+		if (getCharCount(targetList[y], " ") < minWords) {
+			targetList[y].parentNode.removeChild(targetList[y]);
+		}
+	}
+	return e;
+}
+
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