[h5py] 385/455: Allow anonymous group creation

[Ghislain Vaillant]

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ghisvail-guest pushed a commit to annotated tag 1.3.0
in repository h5py.

commit 8d7672e4d862f7b00526a07486f7c5bb756e210c
Author: andrewcollette <andrew.collette at gmail.com>
Date:   Sun Feb 7 23:47:46 2010 +0000

    Allow anonymous group creation
---
 h5py/h5g.pyx               | 19 +++++++++++++------
 h5py/tests/low/test_h5g.py | 21 +++++++++++++++++++++
 2 files changed, 34 insertions(+), 6 deletions(-)

diff --git a/h5py/h5g.pyx b/h5py/h5g.pyx
index bbccf45..ef2ec9b 100644
--- a/h5py/h5g.pyx
+++ b/h5py/h5g.pyx
@@ -126,16 +126,23 @@ def open(ObjectID loc not None, char* name):
 
 IF H5PY_18API:
     
-    def create(ObjectID loc not None, char* name, PropID lcpl=None,
+    def create(ObjectID loc not None, char* name=NULL, PropID lcpl=None,
                PropID gcpl=None):
-        """(ObjectID loc, STRING name, PropLCID lcpl=None, PropGCID gcpl=None)
+        """(ObjectID loc, [STRING name,] PropLCID lcpl=None, PropGCID gcpl=None)
         => GroupID
 
-        Create a new group, under a given parent group.
+        Create a new group, under a given parent group.  If name is omitted,
+        an anonymous group will be created in the file.
         """
-        return GroupID(H5Gcreate2(loc.id, name, pdefault(lcpl),
-                                                pdefault(gcpl),
-                                                H5P_DEFAULT))
+        cdef hid_t gid
+
+        if name != NULL:
+            gid = H5Gcreate2(loc.id, name, pdefault(lcpl), pdefault(gcpl), H5P_DEFAULT)
+        else:
+            gid = H5Gcreate_anon(loc.id, pdefault(gcpl), H5P_DEFAULT)
+
+        return GroupID(gid)
+
 ELSE:
     
     def create(ObjectID loc not None, char* name):
diff --git a/h5py/tests/low/test_h5g.py b/h5py/tests/low/test_h5g.py
new file mode 100644
index 0000000..19d7ae9
--- /dev/null
+++ b/h5py/tests/low/test_h5g.py
@@ -0,0 +1,21 @@
+
+from h5py import tests
+from h5py import *
+
+class TestCreate(tests.HTest):
+
+    def setUp(self):
+        self.fid, self.name = tests.gettemp()
+
+    def tearDown(self):
+        import os
+        self.fid.close()
+        os.unlink(self.name)
+
+    @tests.require(api=18)
+    def test_create_anon(self):
+        """ (H5G) Anonymous group creation """
+        gid = h5g.create(self.fid)
+        self.assert_(gid)
+        self.assertIsInstance(gid, h5g.GroupID)
+

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