Provide minimalist debian/control object

Closes: #673473
Signed-off-by: Guido Günther <agx@sigxcpu.org>

1 files changed, 78 insertions, 0 deletions

diff --git a/gbp/deb/control.py b/gbp/deb/control.py
new file mode 100644
index 00000000..da01ebea
--- /dev/null
+++ b/gbp/deb/control.py
@@ -0,0 +1,78 @@
+# vim: set fileencoding=utf-8 :
+#
+# (C) 2012 Daniel Dehennin <daniel.dehennin@baby-gnu.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 2 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
+"""A Debian Control"""
+
+import email
+import os
+
+class NoControlError(Exception):
+    """No control found"""
+    pass
+
+class ParseControlError(Exception):
+    """Problem parsing control"""
+    pass
+
+class Control(object):
+    """A Debian control"""
+
+    def __init__(self, contents=None, filename="debian/control"):
+        """
+        Parse an existing control file.
+
+        @param contents: content of a control file
+        @type contents: C{str}
+        @param filename: name of the control file
+        @type filename: C{str}
+        @return: Control object
+        @rtype: C{gbp.deb.conrol.Control} object
+        """
+        if contents:
+            control = email.message_from_string(contents)
+        else:
+            if not os.access(filename, os.F_OK):
+                raise NoControlError("Control file %s does not exist" % filename)
+
+            with file(filename) as f:
+                control = email.message_from_file(f)
+
+        if not control.items():
+            raise ParseControlError("Empty or invalid control file or contents")
+
+        self._control = control
+        self.filename = filename
+
+    def __getitem__(self, item):
+        return self._control[item]
+
+    def __setitem__(self, item, value):
+        self._control[item] = value
+
+    @property
+    def name(self):
+        """The packges name"""
+        return self._control['Source']
+
+    @property
+    def section(self):
+        """The packges section"""
+        return self._control['Section']
+
+    @property
+    def priority(self):
+        """The packges priority"""
+        return self._control['Priority']