From 2ab50a6e764cf71bfdc831dfaa80887e8f8cb3ef Mon Sep 17 00:00:00 2001
From: jvoisin
Date: Wed, 6 Mar 2013 13:11:14 +0100
Subject: Heavy refactoring of mutagen-powered formats

---
 MAT/audio.py          | 74 ++++++++++++---------------------------------------
 MAT/mutagenpowered.py | 35 ++++++++++++++++++++++++
 MAT/strippers.py      |  1 -
 3 files changed, 52 insertions(+), 58 deletions(-)
 create mode 100644 MAT/mutagenpowered.py

diff --git a/MAT/audio.py b/MAT/audio.py
index ed849ee..4df33dd 100644
--- a/MAT/audio.py
+++ b/MAT/audio.py
@@ -1,15 +1,15 @@
 '''
     Care about audio fileformat
 '''
+
 try:
     from mutagen.flac import FLAC
     from mutagen.oggvorbis import OggVorbis
 except ImportError:
     pass
 
-
 import parser
-import shutil
+import mutagenpowered
 
 
 class MpegAudioStripper(parser.GenericParser):
@@ -17,84 +17,44 @@ class MpegAudioStripper(parser.GenericParser):
         Represent mpeg audio file (mp3, ...)
     '''
     def _should_remove(self, field):
-        if field.name in ("id3v1", "id3v2"):
-            return True
-        else:
-            return False
+        return field.name in ("id3v1", "id3v2")
 
 
-class OggStripper(parser.GenericParser):
+class OggStripper(mutagenpowered.MutagenStripper):
     '''
         Represent an ogg vorbis file
     '''
-    def remove_all(self):
-        if self.backup is True:
-            shutil.copy2(self.filename, self.output)
-            self.filename = self.output
-
-        mfile = OggVorbis(self.filename)
-        mfile.delete()
-        mfile.save()
-        return True
-
-    def is_clean(self):
-        '''
-            Check if the "metadata" block is present in the file
-        '''
-        mfile = OggVorbis(self.filename)
-        if mfile.tags == []:
-            return True
-        else:
-            return False
-
-    def get_meta(self):
-        '''
-            Return the content of the metadata block if present
-        '''
-        metadata = {}
-        mfile = OggVorbis(self.filename)
-        for key, value in mfile.tags:
-            metadata[key] = value
-        return metadata
+    def _create_mfile(self):
+        self.mfile = OggVorbis(self.filename)
 
 
-class FlacStripper(parser.GenericParser):
+class FlacStripper(mutagenpowered.MutagenStripper):
     '''
         Represent a Flac audio file
     '''
+    def _create_mfile(self):
+        self.mfile = FLAC(self.filename)
+
     def remove_all(self):
         '''
             Remove the "metadata" block from the file
         '''
-        if self.backup is True:
-            shutil.copy2(self.filename, self.output)
-            self.filename = self.output
-
-        mfile = FLAC(self.filename)
-        mfile.delete()
-        mfile.clear_pictures()
-        mfile.save()
+        super(FlacStripper, self).remove_all()
+        self.mfile.clear_pictures()
+        self.mfile.save()
         return True
 
     def is_clean(self):
         '''
             Check if the "metadata" block is present in the file
         '''
-        mfile = FLAC(self.filename)
-        if mfile.tags is None and mfile.pictures == []:
-            return True
-        else:
-            return False
+        return super(FlacStripper, self).is_clean() and not self.mfile.pictures
 
     def get_meta(self):
         '''
             Return the content of the metadata block if present
         '''
-        metadata = {}
-        mfile = FLAC(self.filename)
-        if mfile.tags is not None:
-            if mfile.pictures != []:
-                metadata['picture :'] = 'yes'
-            for key, value in mfile.tags:
-                metadata[key] = value
+        metadata = super(FlacStripper, self).get_meta()
+        if self.mfile.pictures:
+            metadata['picture:'] = 'yes'
         return metadata
diff --git a/MAT/mutagenpowered.py b/MAT/mutagenpowered.py
new file mode 100644
index 0000000..d44bbdb
--- /dev/null
+++ b/MAT/mutagenpowered.py
@@ -0,0 +1,35 @@
+import parser
+import shutil
+
+
+class MutagenStripper(parser.GenericParser):
+    def __init__(self, filename, parser, mime, backup, **kwargs):
+        super(MutagenStripper, self).__init__(filename, parser, mime, backup, **kwargs)
+        self._create_mfile()
+
+    def _create_mfile(self):
+        raise NotImplemented
+
+    def is_clean(self):
+        return not self.mfile.tags
+
+    def remove_all(self):
+        if self.backup:
+            shutil.copy2(self.filename, self.output)
+            self.mfile.filename = self.output
+        else:
+            self.mfile.filename = self.filename
+
+        self.mfile.delete()
+        self.mfile.save()
+        return True
+
+    def get_meta(self):
+        '''
+            Return the content of the metadata block is present
+        '''
+        metadata = {}
+        if self.mfile.tags:
+            for key, value in self.mfile.tags:
+                metadata[key] = value
+        return metadata
diff --git a/MAT/strippers.py b/MAT/strippers.py
index 4b673fe..2bd17e1 100644
--- a/MAT/strippers.py
+++ b/MAT/strippers.py
@@ -64,4 +64,3 @@ except OSError:  # if exiftool is not installed, use hachoir
     print('Unable to find exiftool: limited images support')
     STRIPPERS['image/jpeg'] = images.JpegStripper
     STRIPPERS['image/png'] = images.PngStripper
-
-- 
cgit v1.3