added command line interface "pyecoregen"

Author: moltob

.coveragerc

@@ -5,3 +5,4 @@ source = pyecoregen
 [report]
 exclude_lines =
     raise NotImplementedError
+    \# nocover

pyecoregen/cli.py

@@ -0,0 +1,45 @@
+"""Command line interface for generation of static Python classes from Ecore model."""
+import argparse
+
+import sys
+
+import pyecore.resources
+from pyecoregen.ecore import EcoreGenerator
+
+
+def main():
+    generate_from_cli(sys.argv[1:])  # nocover
+
+
+def generate_from_cli(args):
+    """CLI entry point."""
+    parser = argparse.ArgumentParser(description="Generate Python classes from an Ecore model.")
+    parser.add_argument(
+        '--ecore-model',
+        '-e',
+        help="Path to Ecore XMI file.",
+        required=True
+    )
+    parser.add_argument(
+        '--out-folder',
+        '-o',
+        help="Path to directory, where output files are generated.",
+        required=True
+    )
+
+    parsed_args = parser.parse_args(args)
+    model = load_model(parsed_args.ecore_model)
+    EcoreGenerator().generate(model, parsed_args.out_folder)
+
+
+def load_model(ecore_model_path):
+    """Load a single Ecore model and return the root package."""
+    rset = pyecore.resources.ResourceSet()
+    resource = rset.get_resource(pyecore.resources.URI(ecore_model_path))
+    model = resource.contents[0]
+    rset.metamodel_registry[model.nsURI] = model
+    return model
+
+
+if __name__ == '__main__':  # nocover
+    main()

setup.py

@@ -29,7 +29,7 @@ def run_tests(self):
 
 setup(
     name="pyecoregen",
-    version='0.0.2',
+    version='0.1.0',
     description="Model to text framework for PyEcore, including the Ecore to Python generator",
     long_description=open('README.rst').read(),
     keywords="model metamodel EMF Ecore code generator",
@@ -43,6 +43,7 @@ def run_tests(self):
     install_requires=['pyecore', 'pymultigen', 'jinja2', 'autopep8'],
     tests_require=['pytest'],
     cmdclass={'test': PyTest},
+    entry_points={'console_scripts': ['pyecoregen = pyecoregen.cli:main']},
 
     license='BSD 3-Clause',
     classifiers=[

tests/test_cli.py

@@ -0,0 +1,21 @@
+from unittest import mock
+
+import pyecore.ecore
+from pyecoregen.cli import generate_from_cli
+
+
+@mock.patch('pyecoregen.cli.EcoreGenerator')
+def test__generate_from_cli(generator_mock, cwd_module_dir):
+    mock_generator = generator_mock()
+    mock_generator.generate = mock.MagicMock()
+
+    generate_from_cli(['-e', 'input/library.ecore', '-o', 'some/folder'])
+
+    # look at arguments of generate call:
+    mock_generate = generator_mock().generate
+    model = mock_generator.generate.call_args[0][0]
+    path = mock_generator.generate.call_args[0][1]
+
+    assert isinstance(model, pyecore.ecore.EPackage)
+    assert model.name == 'library'
+    assert path == 'some/folder'