Adds version hash to definition url

pynxtools/__init__.py

@@ -19,12 +19,15 @@
 # limitations under the License.
 #
 import os
+import re
 from glob import glob
 from typing import Union
 
 from pynxtools._build_wrapper import get_vcs_version
 from pynxtools.definitions.dev_tools.globals.nxdl import get_nxdl_version
 
+MAIN_BRANCH_NAME = "fairmat"
+
 
 def _build_version(tag: str, distance: int, node: str, dirty: bool) -> str:
     """
@@ -69,3 +72,15 @@ def get_nexus_version() -> str:
 
     with open(version_file, encoding="utf-8") as vfile:
         return format_version(vfile.read().strip())
+
+
+def get_nexus_version_hash() -> str:
+    """
+    Gets the git hash from the nexus version string
+    """
+    version = re.search(r"g([a-z0-9]+)", get_nexus_version())
+
+    if version is None:
+        return MAIN_BRANCH_NAME
+
+    return version.group(1)

pynxtools/dataconverter/helpers.py

@@ -592,6 +592,10 @@ def add_default_root_attributes(data, filename):
     data["/@file_name"] = filename
     data["/@file_time"] = str(datetime.now(timezone.utc).astimezone())
     data["/@file_update_time"] = data["/@file_time"]
+    data["/@NeXus_repository"] = (
+        "https://github.com/FAIRmat-NFDI/nexus_definitions/"
+        f"blob/{get_nexus_version_hash()}"
+    )
     data["/@NeXus_version"] = get_nexus_version()
     data["/@HDF5_version"] = '.'.join(map(str, h5py.h5.get_libversion()))  # pylint: disable=c-extension-no-member
     data["/@h5py_version"] = h5py.__version__

pynxtools/dataconverter/readers/ellips/reader.py

@@ -27,7 +27,7 @@
 from pynxtools.dataconverter.readers.ellips.mock import MockEllips
 from pynxtools.dataconverter.helpers import extract_atom_types
 from pynxtools.dataconverter.readers.utils import flatten_and_replace, FlattenSettings
-from pynxtools import get_nexus_version
+from pynxtools import get_nexus_version, get_nexus_version_hash
 
 DEFAULT_HEADER = {'sep': '\t', 'skip': 0}
 
@@ -470,7 +470,7 @@ def read(self,
         template["/ENTRY[entry]/definition"] = "NXellipsometry"
         template["/ENTRY[entry]/definition/@url"] = (
             "https://github.com/FAIRmat-NFDI/nexus_definitions/"
-            "blob/fairmat/contributed_definitions/NXellipsometry.nxdl.xml"
+            f"blob/{get_nexus_version_hash()}/contributed_definitions/NXellipsometry.nxdl.xml"
         )
         template["/ENTRY[entry]/definition/@version"] = get_nexus_version()
         template["/ENTRY[entry]/program_name"] = "pynxtools"