Added new command line tool for dumping pure NCML without XSL for NetCDF-4 files.

ncmltransformdemo/metadatatransformer.py

@@ -21,7 +21,7 @@ class MetadataTransformer:
             self.nc_dump_path = ""
             self.nc_classic_path = ""
             self.in_file = os.path.basename(netcdf_path)
-            self._out_path = out_path
+            self.out_path = out_path
             self.out_file = ""
 
     def dump_nc_file(self):
@@ -30,7 +30,7 @@ class MetadataTransformer:
         :return:
         """
         self.nc_dump_path = os.path.join(
-            self._out_path,
+            self.out_path,
             self.in_file.replace(".nc", "_dumped.txt")
         )
 
@@ -49,7 +49,7 @@ class MetadataTransformer:
         """
 
         self.nc_classic_path = os.path.join(
-            self._out_path,
+            self.out_path,
             self.nc_dump_path.replace(".txt", "_classic.nc")
         )
 
@@ -65,7 +65,7 @@ class MetadataTransformer:
         :return:
         """
         self.out_file = os.path.join(
-            self._out_path,
+            self.out_path,
             self.in_file.replace(".nc", ".xml")
         )
 
@@ -87,7 +87,7 @@ class MetadataTransformer:
         :return:
         """
         final_xml = os.path.join(
-            self._out_path,
+            self.out_path,
             self.out_file.replace(".xml", "_transformed.xml")
         )
 

ncmltransformdemo/metadatatransformertests.py

@@ -69,7 +69,7 @@ class GetNCMetadataTests(unittest.TestCase):
         self.transformer.dump_nc_file()
         self.transformer.get_classic_nc()
         self.transformer.get_ncml()
-        self.assertTrue(os.path.exists(self.transformer._out_path))
+        self.assertTrue(os.path.exists(self.transformer.out_path))
 
     def testGetTransformedXML(self):
         """

ncmltransformdemo/ncml4dump.py

+"""
+This tool dumps NCML from a NetCDF-4 dataset. It intends
+to mimic the behavior of the ncdump -x command, but for
+NetCDF-4 files.
+
+- Justin Lynn Reid
+"""
+
+import argparse
+import os
+
+from ncmltransformdemo.metadatatransformer import MetadataTransformer
+
+
+class Ncml4Dump:
+
+    @staticmethod
+    def create_arg_parser():
+        """
+        Get command line arguments
+        :return: ArgParser instances containing command line arguments
+        """
+        parser = argparse.ArgumentParser(description="A utility for dumping NCML from NetCDF-4 data")
+        parser.add_argument("--in_netcdf", dest="in_netcdf", help="Input Netcdf")
+        parser.add_argument(
+            "--out_dir", dest="out_dir",
+            default=os.path.expanduser("~"), help="Output dir"
+        )
+
+        return parser.parse_args()
+
+    @staticmethod
+    def main():
+        """
+        Main method
+        :return: Null
+        """
+
+        # Get command line arguments
+        args = Ncml4Dump.create_arg_parser()
+
+        # Make instance of transformer and perform xml transformation
+        meta_transformer = MetadataTransformer(
+            os.path.expanduser(args.in_netcdf),
+            os.path.expanduser(args.out_dir)
+        )
+        meta_transformer.dump_nc_file()
+        meta_transformer.get_classic_nc()
+        meta_transformer.get_ncml()
+
+        # Delete all created side files on filesystem
+        os.remove(meta_transformer.nc_classic_path)
+        os.remove(meta_transformer.nc_dump_path)
+
+        print("XML file {0} has been successfully created!".format(meta_transformer.out_file))
+
+if __name__ == "__main__":
+    Ncml4Dump.main()
\ No newline at end of file

setup.py

@@ -11,7 +11,7 @@ setup(
     name="ncmltransformdemo",
     version=1.0,
     packages=find_packages(),
-    scripts=["ncmltransformdemo/ncmltransform.py"],
+    scripts=["ncmltransformdemo/ncmltransform.py", "ncmltransformdemo/ncml4dump.py"],
     test_suite='nose.collector',
     tests_require='nose'
 )