Defining some basic exceptions in lib/trace_maillog/any_uncompress_file.py

diff --git a/lib/trace_maillog/any_uncompress_file.py b/lib/trace_maillog/any_uncompress_file.py
index 2ca7ff409307b0c0c8a93e3fa7d3710ddd5972f6..584064e7760ab762461071544fd9b3ce2806d22f 100644 (file)
--- a/lib/trace_maillog/any_uncompress_file.py
+++ b/lib/trace_maillog/any_uncompress_file.py
@@ -4,7 +4,7 @@
 @author: Frank Brehm
 @contact: frank.brehm@pixelpark.com
 @copyright: © 2017 by Frank Brehm, Berlin
-@summary: The module for e AnyUmpressFile class
+@summary: The module for a AnyUmpressFile class
 """
 from __future__ import absolute_import
 
@@ -30,11 +30,46 @@ except ImportError:
 # Third party modules
 import six
 
+__version__ = '0.1.0'
+
+
+# =============================================================================
+class BaseAnyUncompressError(Exception):
+    """Base class for all exceptions defined in this module."""
+    pass
+
+# =============================================================================
+class InvalidCompressionError(BaseAnyUncompressError, NotImplementedError):
+    """Special exception class for not implemented compression types."""
+
+    # -------------------------------------------------------------------------
+    def __init__(self, compress_type, filename=None):
+
+        self.compress_type = compress_type
+        self.filename = filename
+
+    # -------------------------------------------------------------------------
+    def __str__(self):
+
+        if self.filename:
+            msg = "Unimplemented compression type {t!r} on file {f!r}.".format(
+                t=self.compress_type, f=self.filename)
+        else:
+            msg = "Unimplemented compression type {!r}.".format(self.compress_type)
+        return msg
+
+
+# =============================================================================
+class AnyUmpressFile(object):
+
+    pass
+
+
 # =============================================================================
-class InvalidCompressionError(NotImplementedError):
 
+if __name__ == "__main__":
     pass
 
 # =============================================================================
-class AnyUmpressFile(file):
 
+# vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4