Start of HDF5 Loader

Author: timsnow

src/modacor/io/hdf/hdf_loader.py

@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2025 MoDaCor Authors
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+# 1. Redistributions of source code must retain the above copyright notice, this
+#    list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+# 3. Neither the name of the copyright holder nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without
+#    specific prior written permission.
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+__license__ = "BSD-3-Clause"
+__copyright__ = "Copyright 2025 MoDaCor Authors"
+__status__ = "Alpha"
+
+
+from ..io_source import IoSource
+from ..io_sources import IoSources
+from modacor.dataclasses.messagehandler import *
+from logging import WARNING
+import numpy as np
+import h5py
+
+
+class HDFLoader(IoSources):
+    def __init__(self, source_reference: str, source: IoSource, logging_level = WARNING):
+        super().__init__(source_reference, source)
+        self.hdf_logger = MessageHandler('hdf5logger', logging_level)
+
+
+    def _open_file(self, file_path = None):
+        if file_path is None:
+            error = 'No filepath given'
+            self.hdf_logger.log.error(error)
+            raise OSError(error)
+        
+        try:
+            self.file_reference = h5py.File(file_path, 'r')
+        except OSError as error:
+            self.hdf_logger.log.error(error)
+            raise OSError(error)    
+
+
+    def _close_file(self):
+        try:
+            self.file_reference.close()
+        except OSError as error:
+            self.hdf_logger.log.error(error)
+            raise OSError(error)