[postprocessor:metadata] first implementation (#135)

gallery_dl/postprocessor/metadata.py

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2019 Mike Fährmann
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+
+"""Write metadata to JSON files"""
+
+from .common import PostProcessor
+import json
+
+
+class MetadataPP(PostProcessor):
+
+    def __init__(self, pathfmt, options):
+        PostProcessor.__init__(self)
+        self.indent = options.get("indent", 4)
+        self.ascii = options.get("ascii", False)
+
+    def run(self, pathfmt):
+        with open(pathfmt.realpath + ".json", "w") as file:
+            json.dump(
+                pathfmt.keywords,
+                file,
+                sort_keys=True,
+                indent=self.indent,
+                ensure_ascii=self.ascii,
+            )
+
+
+__postprocessor__ = MetadataPP