Merge pull request #20 from unnonouno/version

Add version option

mrep/__init__.py

@@ -0,0 +1 @@
+__version__ = '0.1.1'

scripts/mrep

@@ -42,7 +42,7 @@ if __name__ == '__main__':
     parser = argparse.ArgumentParser(
         description='MREP: morpheme regular expression printer')
     parser.add_argument('pattern', metavar='PATTERN',
-                        help='pattern')
+                        nargs='?', help='pattern')
     parser.add_argument('file', metavar='FILE',
                         nargs='*', help='data file')
     parser.add_argument('-o', '--only-matching', action='store_true',
@@ -57,8 +57,19 @@ if __name__ == '__main__':
     parser.add_argument('--mecab-arg', type=str, default='',
                         help='argument to pass to mecab '
                         '(ex: "-r /path/to/resource/file")')
+    parser.add_argument('--version', action='store_true',
+                        help='show version number')
     args = parser.parse_args()
 
+    if args.version:
+        sys.stdout.write('mrep %s\n' % mrep.__version__)
+        sys.exit(0)
+
+    if args.pattern is None:
+        parser.print_usage()
+        sys.stdout.write('mrep: error: PATTERN is required\n')
+        sys.exit(2)
+
     try:
         matcher = mrep.builder.parse(args.pattern)
     except mrep.builder.ParseError as e:

setup.py

@@ -2,6 +2,7 @@
 
 import os
 from setuptools import setup
+from mrep import __version__
 
 requires = [
     'mecab-python3',
@@ -12,7 +13,7 @@ def read(name):
 
 setup(
     name='mrep',
-    version='0.1.1',
+    version=__version__,
     description='MREP: morpheme regular expression printer',
     long_description=read('README.rst'),
     author='Yuya Unno',

test/mrep_test.py

@@ -2,6 +2,7 @@
 
 import unittest
 import subprocess
+from mrep import __version__
 
 ESCAPE = '\033[%sm'
 RED = ESCAPE % '31'
@@ -57,3 +58,13 @@ def test_invalid_pattern(self):
             self.call('"<"', 'test/data/1.txt')
 
         self.assertEqual(3, cm.exception.returncode)
+
+    def test_no_pattern(self):
+        with self.assertRaises(subprocess.CalledProcessError) as cm:
+            self.call()
+
+        self.assertEqual(2, cm.exception.returncode)
+
+    def test_version(self):
+        out = self.call('--version')
+        self.assertTrue(__version__ in str(out))