Add version

Makefile

@@ -6,7 +6,7 @@ SOURCE = source
 default: run
 
 run: dist
-	python bin/$(APPNAME).pyz -h
+	python bin/$(APPNAME).pyz --version
 
 dist: bin/$(APPNAME).pyz
 

setup.py

@@ -7,8 +7,13 @@
 import logging
 import os
 import re
+import subprocess
 import zipfile
 
+def get_version():
+    command = ['git', 'describe', '--tags', '--dirty', '--always']
+    return subprocess.check_output(command).decode('utf-8')
+
 def source_walk(root):
     root = os.path.abspath(root)
     regex = re.compile(fnmatch.translate('*.py[co]'))
@@ -45,6 +50,7 @@ def setup():
       args.output = args.source + '.zip'
 
     with zipfile.ZipFile(args.output, 'w', zipfile.ZIP_DEFLATED) as fzip:
+      fzip.writestr('version.txt', get_version())
       for path, relpath in source_walk(args.source):
         fzip.write(path, relpath)
 

source/configure.py

@@ -16,6 +16,7 @@
 import json
 import logging
 import os
+import pkgutil
 import re
 import sys
 
@@ -31,6 +32,9 @@ def critical_error(message, *args):
     logging.critical(message, *args)
     sys.exit(1)
 
+def get_resource(filename):
+    return pkgutil.get_data('__main__', filename).decode('utf-8')
+
 def remove_comments(string):
     """Remove C comments from string. See http://stackoverflow.com/a/18381470"""
     pattern = r'(\".*?\"|\'.*?\')|(/\*.*?\*/|//[^\r\n]*$)'
@@ -213,6 +217,10 @@ def iterate_targets(root):
 
 def main():
     argparser = ArgumentParser(description=__doc__)
+    argparser.add_argument(
+        '-v', '--version',
+        action='version',
+        version='%(prog)s ' + get_resource('version.txt'))
     argparser.add_argument(
         '-d', '--debug',
         action='store_true',