From f391c9603c36a8ec80942c23ac6ba39fca5df72a Mon Sep 17 00:00:00 2001
From: jvoisin
Date: Sat, 31 Mar 2018 15:46:17 +0200
Subject: Change a bit the source code organisation

---
 src/png.py | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 src/png.py

(limited to 'src/png.py')

diff --git a/src/png.py b/src/png.py
new file mode 100644
index 0000000..377682e
--- /dev/null
+++ b/src/png.py
@@ -0,0 +1,27 @@
+import subprocess
+import json
+
+import cairo
+
+from . import abstract
+
+class PNGParser(abstract.AbstractParser):
+    mimetypes = {'image/png', }
+    meta_whitelist = {'SourceFile', 'ExifToolVersion', 'FileName',
+            'Directory', 'FileSize', 'FileModifyDate', 'FileAccessDate',
+            "FileInodeChangeDate", 'FilePermissions', 'FileType',
+            'FileTypeExtension', 'MIMEType', 'ImageWidth', 'BitDepth', 'ColorType',
+            'Compression', 'Filter', 'Interlace', 'BackgroundColor', 'ImageSize',
+            'Megapixels', 'ImageHeight'}
+
+    def get_meta(self):
+        out = subprocess.check_output(['exiftool', '-json', self.filename])
+        meta = json.loads(out.decode('utf-8'))[0]
+        for key in self.meta_whitelist:
+            meta.pop(key, None)
+        return meta
+
+    def remove_all(self):
+        surface = cairo.ImageSurface.create_from_png(self.filename)
+        surface.write_to_png(self.output_filename)
+        return True
-- 
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