[Patchanim-commit] SF.net SVN: patchanim: [236] trunk/patchanim/src/com/mebigfatguy/patchanim/ io/PatchAnimIO.java

[<dbr...@us...>]

Revision: 236
          http://patchanim.svn.sourceforge.net/patchanim/?rev=236&view=rev
Author:   dbrosius
Date:     2008-02-24 08:01:04 -0800 (Sun, 24 Feb 2008)

Log Message:
-----------
use save safe file idiom

Modified Paths:
--------------
    trunk/patchanim/src/com/mebigfatguy/patchanim/io/PatchAnimIO.java

Modified: trunk/patchanim/src/com/mebigfatguy/patchanim/io/PatchAnimIO.java
===================================================================
--- trunk/patchanim/src/com/mebigfatguy/patchanim/io/PatchAnimIO.java	2008-02-24 15:38:47 UTC (rev 235)
+++ trunk/patchanim/src/com/mebigfatguy/patchanim/io/PatchAnimIO.java	2008-02-24 16:01:04 UTC (rev 236)
@@ -60,18 +60,18 @@
 	public static void saveFile(File f, PatchAnimDocument document) throws IOException {
 		InputStream xslIs = null;
 		OutputStream xmlOs = null;
+		File temporary = File.createTempFile("patchanim", "paf", f.getParentFile());
 		try {
-			document.setDirty(false);
-			
 			TransformerFactory tf = TransformerFactory.newInstance();
 			xslIs = new BufferedInputStream(PatchAnimIO.class.getResourceAsStream("/com/mebigfatguy/patchanim/io/PatchAnimDoc.xsl"));
 			Transformer t = tf.newTransformer(new StreamSource(xslIs));
 			DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
 			DocumentBuilder db = dbf.newDocumentBuilder();
 			Document d = db.newDocument();
-			xmlOs = new BufferedOutputStream(new FileOutputStream(f));
+			xmlOs = new BufferedOutputStream(new FileOutputStream(temporary));
 			t.setParameter("doc", document);
 			t.transform(new DOMSource(d), new StreamResult(xmlOs));
+			document.setDirty(false);
 		} catch (IOException ioe) {
 			throw ioe;
 		} catch (Exception e) {
@@ -81,6 +81,9 @@
 		} finally {
 			Closer.close(xslIs);
 			Closer.close(xmlOs);
+			f.delete();
+			if (!temporary.renameTo(f))
+				throw new IOException("Failed saving file " + f.getPath());
 		}
 	}
 


This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.