Merge branch 'develop' into main

1 files changed, 73 insertions, 0 deletions

diff --git a/bsfs/apps/init.py b/bsfs/apps/init.py
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+++ b/bsfs/apps/init.py
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+"""
+
+Part of the BlackStar filesystem (bsfs) module.
+A copy of the license is provided with the project.
+Author: Matthias Baumgartner, 2022
+"""
+# imports
+import argparse
+import json
+import sys
+import typing
+
+# bsfs imports
+from bsfs.utils import errors
+
+# exports
+__all__: typing.Sequence[str] = (
+    'main',
+    )
+
+## code ##
+
+def init_sparql_store(user) -> typing.Any:
+    """Initialize a SparqlStore backend. Returns a configuration to load it."""
+    # nothing to do for non-persistent store
+    # return config to storage
+    return {
+        'Graph': {
+            'user': user,
+            'backend': {
+                'SparqlStore': {},
+                },
+            }
+        }
+
+
+def main(argv):
+    """Create a new bsfs storage structure."""
+    parser = argparse.ArgumentParser(description=main.__doc__, prog='init')
+    # global arguments
+    parser.add_argument('--user', type=str, default='http://example.com/me',
+        help='Default user.')
+    parser.add_argument('--output', type=str, default=None,
+        help='Write the config to a file instead of standard output.')
+    #parser.add_argument('--schema', type=str, default=None,
+    #    help='Initial schema.')
+    # storage selection
+    parser.add_argument('store', choices=('sparql', ),
+        help='Which storage to initialize.')
+    # storage args
+    # parse args
+    args = parser.parse_args(argv)
+
+    # initialize selected storage
+    if args.store == 'sparql':
+        config = init_sparql_store(args.user)
+    else:
+        raise errors.UnreachableError()
+
+    # print config
+    if args.output is not None:
+        with open(args.output, mode='wt', encoding='UTF-8') as ofile:
+            json.dump(config, ofile)
+    else:
+        json.dump(config, sys.stdout)
+
+
+## main ##
+
+if __name__ == '__main__':
+    main(sys.argv[1:])
+
+## EOF ##