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+# coding: utf-8
+# /*##########################################################################
+# Copyright (C) 2016-2017 European Synchrotron Radiation Facility
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+# ############################################################################*/
+"""
+This module contains wrapper from file format to h5py. The exposed layout is
+as close as possible to the original file format.
+"""
+import numpy
+from . import commonh5
+import logging
+
+__authors__ = ["V. Valls"]
+__license__ = "MIT"
+__date__ = "21/09/2017"
+
+
+_logger = logging.getLogger(__name__)
+
+
+class _FreeDataset(commonh5.Dataset):
+
+ def _check_data(self, data):
+ """Release the constriants checked on types cause we can reach more
+ types than the one available on h5py, and it is not supposed to be
+ converted into h5py."""
+ chartype = data.dtype.char
+ if chartype in ["U", "O"]:
+ msg = "Dataset '%s' uses an unsupported type '%s'."
+ msg = msg % (self.name, data.dtype)
+ _logger.warning(msg)
+
+
+class NumpyFile(commonh5.File):
+ """
+ Expose a numpy file `npy`, or `npz` as an h5py.File-like.
+
+ :param str name: Filename to load
+ """
+ def __init__(self, name=None):
+ commonh5.File.__init__(self, name=name, mode="w")
+ np_file = numpy.load(name)
+ if hasattr(np_file, "close"):
+ # For npz (created using by numpy.savez, numpy.savez_compressed)
+ for key, value in np_file.items():
+ self[key] = _FreeDataset(None, data=value)
+ np_file.close()
+ else:
+ # For npy (created using numpy.save)
+ value = np_file
+ dataset = _FreeDataset("data", data=value)
+ self.add_node(dataset)