1 files changed, 48 insertions, 0 deletions

diff --git a/lib/images.py b/lib/images.py
new file mode 100644
index 0000000..3eb3544
--- /dev/null
+++ b/lib/images.py
@@ -0,0 +1,48 @@
+'''
+    Takes care about pictures formats
+'''
+
+import parser
+
+
+class JpegStripper(parser.GenericParser):
+    '''
+        represents a jpeg file
+        remaining :
+        http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/CanonRaw.html
+    '''
+    def _should_remove(self, field):
+        '''
+            return True if the field is compromizing
+        '''
+        name = field.name
+        if name.startswith('comment'):
+            return True
+        elif name in ('photoshop', 'exif', 'adobe', 'app12'):
+            return True
+        elif name in ('icc'):  # should we remove the icc profile ?
+            return True
+        else:
+            return False
+
+
+class PngStripper(parser.GenericParser):
+    '''
+        represents a png file
+        see : http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/PNG.html
+    '''
+    def _should_remove(self, field):
+        '''
+            return True if the field is compromizing
+        '''
+        name = field.name
+        if name.startswith('text['):  # textual meta
+            return True
+        elif name.startswith('utf8_text['):  # uncompressed adobe crap
+            return True
+        elif name.startswith('compt_text['):  # compressed adobe crap
+            return True
+        elif name == "time":  # timestamp
+            return True
+        else:
+            return False