From cbf8a2a65928694202e19b6bcf56ec84bcbf613c Mon Sep 17 00:00:00 2001
From: jvoisin
Date: Sat, 8 Dec 2012 02:02:25 +0100
Subject: Reorganize source tree and files installation location, cleanup
 setup.py (Closes: #689409)

---
 MAT/exiftool.py | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 MAT/exiftool.py

(limited to 'MAT/exiftool.py')

diff --git a/MAT/exiftool.py b/MAT/exiftool.py
new file mode 100644
index 0000000..758a094
--- /dev/null
+++ b/MAT/exiftool.py
@@ -0,0 +1,95 @@
+'''
+    Care about images with help of the amazing (perl) library Exiftool.
+'''
+
+import subprocess
+import parser
+
+
+class ExiftoolStripper(parser.GenericParser):
+    '''
+        A generic stripper class using exiftool as backend
+    '''
+
+    def __init__(self, filename, parser, mime, backup, add2archive):
+        super(ExiftoolStripper, self).__init__(filename, parser, mime,
+        backup, add2archive)
+        self.allowed = ['ExifTool Version Number', 'File Name', 'Directory',
+                'File Size', 'File Modification Date/Time', 'File Permissions',
+                'File Type', 'MIME Type', 'Image Width', 'Image Height',
+                'Image Size']
+        self._set_allowed()
+
+    def _set_allowed(self):
+        '''
+            Set the allowed/harmless list of metadata
+        '''
+        raise NotImplementedError
+
+    def remove_all(self):
+        '''
+            Remove all metadata with help of exiftool
+        '''
+        try:
+            if self.backup:
+                # Note: '-All=' must be followed by a known exiftool option.
+                process = subprocess.Popen(['exiftool', '-m', '-All=',
+                    '-out', self.output, self.filename],
+                    stdout=open('/dev/null'))
+                process.wait()
+            else:
+                # Note: '-All=' must be followed by a known exiftool option.
+                process = subprocess.Popen(
+                    [ 'exiftool', '-m', '-All=', '-overwrite_original', self.filename ],
+                    stdout=open('/dev/null'))
+                process.wait()
+            return True
+        except:
+            return False
+
+    def is_clean(self):
+        '''
+            Check if the file is clean with help of exiftool
+        '''
+        out = subprocess.Popen(['exiftool', self.filename],
+                stdout=subprocess.PIPE).communicate()[0]
+        out = out.split('\n')
+        for i in out[:-1]:
+            if i.split(':')[0].strip() not in self.allowed:
+                return False
+        return True
+
+    def get_meta(self):
+        '''
+            Return every harmful meta with help of exiftool
+        '''
+        out = subprocess.Popen(['exiftool', self.filename],
+                stdout=subprocess.PIPE).communicate()[0]
+        out = out.split('\n')
+        meta = {}
+        for i in out[:-1]:
+            key = i.split(':')[0].strip()
+            if key not in self.allowed:
+                meta[key] = i.split(':')[1].strip()
+        return meta
+
+
+class JpegStripper(ExiftoolStripper):
+    '''
+        Care about jpeg files with help
+        of exiftool
+    '''
+    def _set_allowed(self):
+        self.allowed.extend(['JFIF Version', 'Resolution Unit',
+        'X Resolution', 'Y Resolution', 'Encoding Process', 'Bits Per Sample',
+        'Color Components', 'Y Cb Cr Sub Sampling'])
+
+class PngStripper(ExiftoolStripper):
+    '''
+        Care about png files with help
+        of exiftool
+    '''
+    def _set_allowed(self):
+        self.allowed.extend(['Bit Depth', 'Color Type', 'Compression',
+            'Filter', 'Interlace', 'Pixels Per Unit X', 'Pixels Per Unit Y',
+            'Pixel Units'])
-- 
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