Add utility to generate a setup.py with updated

requirements. GitLab issue #200 #149

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

generate_setup.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+
+from __future__ import unicode_literals
+
+import os
+
+import django
+from django.conf import settings
+from django.template import Template, Context
+
+BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+
+REQUIREMENTS_FILE = 'requirements.txt'
+SETUP_TEMPLATE = 'setup.py.tmpl'
+
+
+def get_requirements(base_directory, filename):
+    result = []
+
+    with open(os.path.join(base_directory, filename)) as file_object:
+        for line in file_object:
+            if line.startswith('-r'):
+                line = line.split('\n')[0][3:]
+                directory, filename = os.path.split(line)
+                result.extend(
+                    get_requirements(
+                        base_directory=os.path.join(base_directory, directory), filename=filename
+                    )
+                )
+            elif not line.startswith('\n'):
+                result.append(line.split('\n')[0])
+
+    return result
+
+
+if __name__ == '__main__':
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mayan.settings')
+    django.setup()
+
+    requirements = get_requirements(
+        base_directory=BASE_DIR, filename=REQUIREMENTS_FILE
+    )
+
+    with open(SETUP_TEMPLATE) as file_object:
+        template = file_object.read()
+        result = Template(template).render(
+            context=Context({'requirements': requirements})
+        )
+
+    with open('setup.py', 'w') as file_object:
+        file_object.write(result)