ENH: Added support for Bru2's -z compress option

nipype/interfaces/bru2nii.py

@@ -23,11 +23,13 @@ class Bru2InputSpec(CommandLineInputSpec):
         argstr='-f',
         desc="Force conversion of localizers images (multiple slice "
         "orientations).")
+    compress = traits.Bool(
+        argstr='-z', desc='gz compress images (".nii.gz").')
     append_protocol_name = traits.Bool(
         argstr='-p', desc="Append protocol name to output filename.")
     output_filename = traits.Str(
         argstr="-o %s",
-        desc="Output filename ('.nii' will be appended)",
+        desc='Output filename (".nii" will be appended, or ".nii.gz" if the "-z" compress option is selected)',
         genfile=True)
 
 
@@ -57,7 +59,10 @@ def _list_outputs(self):
             output_filename1 = os.path.abspath(self.inputs.output_filename)
         else:
             output_filename1 = self._gen_filename('output_filename')
-        outputs["nii_file"] = output_filename1 + ".nii"
+        if self.inputs.compress:
+            outputs["nii_file"] = output_filename1 + ".nii.gz"
+        else:
+            outputs["nii_file"] = output_filename1 + ".nii"
         return outputs
 
     def _gen_filename(self, name):

nipype/interfaces/tests/test_auto_Bru2.py

@@ -8,6 +8,7 @@ def test_Bru2_inputs():
         actual_size=dict(argstr='-a', ),
         append_protocol_name=dict(argstr='-p', ),
         args=dict(argstr='%s', ),
+        compress=dict(argstr='-z', ),
         environ=dict(
             nohash=True,
             usedefault=True,