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POCreate a local copy of an XML File for a Firefox Extension using Javascript
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  1. POCreate a local copy of an XML File for a Firefox Extension using Javascript
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    copied!<p>I am writing a Firefox extension. Right now I need to create a local copy of a XML file and I am almost successful. A File is read and a new one is created but this one is empty. Is there a special method for XML files or why does it not work?</p> <p>Here are the functions:</p> <pre><code>function loadXMLDoc(dname) { if (window.XMLHttpRequest) { xhttp = new XMLHttpRequest(); } else { xhttp = new ActiveXObject("Microsoft.XMLHTTP"); } xhttp.open("GET", dname, false); xhttp.send(""); return xhttp.responseXML; } </code></pre> <p>and</p> <pre><code>function localcopy() { var url = content.document.location.href; var prefManagerr = Components.classes["@mozilla.org/preferences-service;1"] .getService(Components.interfaces.nsIPrefService) .getBranch("extensions.foafnet."); var prefStringx; if (prefManagerr.prefHasUserValue("stringpref1")) { prefStringx = prefManagerr.getCharPref("stringpref1"); } else { // Preference is default value so use that prefStringx = "0" } if (prefStringx == url) { xml = loadXMLDoc(prefStringx); var file = Components.classes["@mozilla.org/file/directory_service;1"]. getService(Components.interfaces.nsIProperties). get("TmpD", Components.interfaces.nsIFile); file.append("profiletemp.xml"); file.createUnique(Components.interfaces.nsIFile.NORMAL_FILE_TYPE, 0666); // do whatever you need to the created file alert(file.path); // var stream = Components.classes["@mozilla.org/network/safe-file-output-stream;1"]. createInstance(Components.interfaces.nsIFileOutputStream); stream.init(file, 0x04 | 0x08 | 0x20, 0600, 0); // readwrite, create, truncate stream.write(xml, xml.length); if (stream instanceof Components.interfaces.nsISafeOutputStream) { stream.finish(); } else { stream.close(); } } } </code></pre> <p>The beginning of the second function just declares, that a local copy is only to be made if the called website hast the same url as a url defined in the preferences of the extension. this part works just fine.</p>
 

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