* xmlfile'i iyice sekle semale kavustur, yazma isini daha robust yap

pisi/files.py

@@ -39,8 +39,8 @@ class Files(XmlFile):
         self.list = [FileInfo(x) for x in fileElts]
 
     def write(self, filename):
-        #FIXME: need a function to clear DOM first!
+        self.newDOM()
         for x in list:
-            elf.appendChild(x.elt(self.dom))
+            self.appendChild(x.elt(self.dom))
             
 

pisi/specfile.py

@@ -85,12 +85,16 @@ class SpecFile(XmlFile):
         packageElts = self.getAllNodes("Package")
         self.packages = [PackageInfo(p) for p in packageElts]
 
+        self.unlink()
+        
     def verify(self):
         """Verify PSPEC structures, are they what we want of them?"""
         return True
     
     def write(self, filename):
         """Write PSPEC file"""
+        self.newDOM()
+        ##TODO: write the good stuff here
         self.writexml(filename)
 
 class MetaData(SpecFile):

pisi/xmlfile.py

@@ -120,6 +120,16 @@ class XmlFile(object):
 
     def __init__(self, rootTag):
         self.rootTag = rootTag
+        self.newDOM()
+
+    def newDOM(self):
+        """clear DOM"""
+        from xml.dom.minidom import getDOMImplementation
+        impl = getDOMImplementation()
+        dom = impl.createDocument(None, self.rootTag, None)
+
+    def unlink(self):
+        self.dom.unlink()
 
     def readxml(self, fileName):
 	self.dom = mdom.parse(fileName)