Refactor the archive parser

Refactoring of the archive and office parser,
in order to simplify the code and reduce abstraction

3 files changed, 14 insertions, 17 deletions

diff --git a/MAT/archive.py b/MAT/archive.py
index 69c8f1b..1dcddef 100644
--- a/MAT/archive.py
+++ b/MAT/archive.py
@@ -35,9 +35,6 @@ class GenericArchiveStripper(parser.GenericParser):
         shutil.rmtree(self.tempdir)
 
     def remove_all(self):
-        return self._remove_all()
-
-    def _remove_all(self):
         raise NotImplementedError
 
 
@@ -113,7 +110,7 @@ harmless format' % item.filename)
         zipin.close()
         return metadata
 
-    def _remove_all(self):
+    def remove_all(self):
         '''
             So far, the zipfile module does not allow to write a ZipInfo
             object into a zipfile (and it's a shame !) : so data added
@@ -162,7 +159,7 @@ class TarStripper(GenericArchiveStripper):
         current_file.gname = ''
         return current_file
 
-    def _remove_all(self):
+    def remove_all(self):
         tarin = tarfile.open(self.filename, 'r' + self.compression)
         tarout = tarfile.open(self.output, 'w' + self.compression)
         for item in tarin.getmembers():
diff --git a/MAT/office.py b/MAT/office.py
index e7ce661..20664d2 100644
--- a/MAT/office.py
+++ b/MAT/office.py
@@ -49,7 +49,7 @@ class OpenDocumentStripper(archive.GenericArchiveStripper):
             logging.debug('%s has no opendocument metadata' % self.filename)
         return metadata
 
-    def _remove_all(self):
+    def remove_all(self):
         '''
             FIXME ?
             There is a patch implementing the Zipfile.remove()
@@ -140,12 +140,6 @@ class PdfStripper(parser.GenericParser):
 
     def remove_all(self):
         '''
-            Remove metadata
-        '''
-        return self._remove_meta()
-
-    def _remove_meta(self):
-        '''
             Opening the PDF with poppler, then doing a render
             on a cairo pdfsurface for each pages.
 
@@ -202,7 +196,7 @@ class OpenXmlStripper(archive.GenericArchiveStripper):
         It contains mostly xml, but can have media blobs, crap, ...
         (I don't like this format.)
     '''
-    def _remove_all(self):
+    def remove_all(self):
         '''
             FIXME ?
             There is a patch implementing the Zipfile.remove()
diff --git a/MAT/parser.py b/MAT/parser.py
index 6be2b03..e5acbf8 100644
--- a/MAT/parser.py
+++ b/MAT/parser.py
@@ -59,7 +59,7 @@ class GenericParser(object):
 
     def remove_all(self):
         '''
-            Remove all the files that are compromizing
+            Remove all compromising fields
         '''
         state = self._remove_all(self.editor)
         hachoir_core.field.writeIntoFile(self.editor, self.output)
@@ -67,6 +67,9 @@ class GenericParser(object):
         return state
 
     def _remove_all(self, fieldset):
+        '''
+            Recursive way to handle tree metadatas
+        '''
         try:
             for field in fieldset:
                 remove = self._should_remove(field)
@@ -93,6 +96,9 @@ class GenericParser(object):
         return metadata
 
     def _get_meta(self, fieldset, metadata):
+        '''
+            Recursive way to handle tree metadatas
+        '''
         for field in fieldset:
             remove = self._should_remove(field)
             if remove is True:
@@ -101,11 +107,11 @@ class GenericParser(object):
                 except:
                     metadata[field.name] = 'harmful content'
             if remove is FIELD:
-                self._get_meta(field)
+                self._get_meta(field, None)
 
     def _should_remove(self, key):
         '''
-            return True if the field is compromizing
+            return True if the field is compromising
             abstract method
         '''
         raise NotImplementedError
@@ -115,6 +121,6 @@ class GenericParser(object):
             Do a backup of the file if asked,
             and change his creation/access date
         '''
-        if self.backup is False:
+        if not self.backup:
             mat.secure_remove(self.filename)
             os.rename(self.output, self.filename)