+
−import django
+
−import os.path
+
−import re
+
−
+
−def get_svn_revision(path=None):
+
−    """
+
−    Returns the SVN revision in the form SVN-XXXX,
+
−    where XXXX is the revision number.
+
−
+
−    Returns SVN-unknown if anything goes wrong, such as an unexpected
+
−    format of internal SVN files.
+
−
+
−    If path is provided, it should be a directory whose SVN info you want to
+
−    inspect. If it's not provided, this will use the root django/ package
+
−    directory.
+
−    """
+
−    rev = None
+
−    if path is None:
+
−        path = django.__path__[0]
+
−    entries_path = '%s/.svn/entries' % path
+
−
+
−    if os.path.exists(entries_path):
+
−        entries = open(entries_path, 'r').read()
+
−        # Versions >= 7 of the entries file are flat text.  The first line is
+
−        # the version number. The next set of digits after 'dir' is the revision.
+
−        if re.match('(\d+)', entries):
+
−            rev_match = re.search('\d+\s+dir\s+(\d+)', entries)
+
−            if rev_match:
+
−                rev = rev_match.groups()[0]
+
−        # Older XML versions of the file specify revision as an attribute of
+
−        # the first entries node.
+
−        else:
+
−            from xml.dom import minidom
+
−            dom = minidom.parse(entries_path)
+
−            rev = dom.getElementsByTagName('entry')[0].getAttribute('revision')
+
−
+
−    if rev:
+
−        return u'SVN-%s' % rev
+
−    return u'SVN-unknown'