Create monthly-tag.yml (#56)

* Create monthly-tag.yml
* Create mathlab_versioning.py

utils/mathlab_versioning.py

@@ -0,0 +1,100 @@
+import re
+import os
+import argparse
+
+
+module = 'pina'
+meta_file = os.path.join(module, 'meta.py')
+version_line = r'__version__.*=.*"(.+?)"'
+
+
+class Version:
+    def __init__(self, major, minor, patch, date_patch=None):
+        self.major = major
+        self.minor = minor
+        self.patch = patch
+        self.date_patch = date_patch
+
+    def __str__(self):
+
+        if self.date_patch:
+            version_string = '{}.{}.{}.{}'.format(
+                self.major,
+                self.minor,
+                self.patch,
+                self.date_patch
+            )
+        else:
+            version_string = '{}.{}.{}'.format(
+                self.major,
+                self.minor,
+                self.patch,
+            )
+        return version_string
+
+
+def get_version():
+    with open(meta_file, 'r') as fp:
+        content = fp.read()
+
+    try:
+        found = re.search(r'__version__.*=.*"(.+?)"', content).group(1)
+    except AttributeError:
+        pass
+
+    version = re.split(r'[-\.]', found)
+    v = Version(*version)
+    return v
+
+
+def set_version(version):
+    with open(meta_file, 'r') as fp:
+        content = fp.read()
+
+    line_string = '__version__ = "{}"'.format(version)
+    text_after = re.sub('__version__.*=.*"(.+?)"', line_string, content)
+
+    with open(meta_file, 'w') as fp:
+        fp.write(text_after)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description='Manipulate Version')
+
+    subparsers = parser.add_subparsers(dest='command')
+
+    get_ = subparsers.add_parser('get',
+                                 help='Get information about current version')
+    set_ = subparsers.add_parser('set', help='Set version')
+    flags = set_.add_mutually_exclusive_group(required=False)
+    flags.add_argument('--only-major', action='store_true')
+    flags.add_argument('--only-minor', action='store_true')
+    flags.add_argument('--only-patch', action='store_true')
+    flags.add_argument('--only-date', action='store_true')
+    set_.add_argument('version', nargs='+', action="store")
+
+    args = parser.parse_args()
+
+    if args.command == 'get':
+        print(get_version())
+    elif args.command == 'set':
+        if args.only_major:
+            current_version = get_version()
+            current_version.major = args.version[0]
+            set_version(current_version)
+        elif args.only_minor:
+            current_version = get_version()
+            current_version.minor = args.version[0]
+            set_version(current_version)
+        elif args.only_patch:
+            current_version = get_version()
+            current_version.patch = args.version[0]
+            set_version(current_version)
+        elif args.only_date:
+            current_version = get_version()
+            current_version.date_patch = args.version[0]
+            set_version(current_version)
+        elif len(args.version) in [3, 4]:
+            set_version(Version(*args.version))
+        else:
+            raise RuntimeError