1 files changed, 54 insertions, 0 deletions
diff --git a/pomop/version.py b/pomop/version.py
new file mode 100644
index 0000000..b621557
--- /dev/null
+++ b/pomop/version.py
@@ -0,0 +1,54 @@
+# vim: set fileencoding=utf-8 :
+#
+# (C) 2013 Guido Günther <agx@sigxcpu.org>
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program; if not, write to the Free Software
+#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+# Some Pom parsing handling
+
+class Version(object):
+    def __init__(self, text):
+        self._version = text.strip()
+
+    def is_subst(self):
+        """
+        Wheter a version is subject to variable substitution
+
+        >>> Version('1.0').is_subst()
+        False
+        >>> Version('${version}').is_subst()
+        True
+        """
+        return self._version.startswith('${') and self._version.endswith('}')
+
+    def is_snapshot(self):
+        """
+        Wheter a version is a snapthot version
+
+        >>> Version('1.0').is_snapshot()
+        False
+        >>> Version('1.0-SNAPSHOT').is_snapshot()
+        True
+        """
+        return self._version.endswith('-SNAPSHOT')
+
+    def __str__(self):
+        return self._version
+
+    def __eq__(self, arg):
+        # Make sure we can compare versions in string context
+        if isinstance(arg, (str, unicode)):
+            return self._version.__eq__(arg)
+        else:
+            return super(Version, self).__eq__(arg)