Move DebianPkgPolicy to separate module

1 files changed, 83 insertions, 0 deletions

diff --git a/gbp/deb/policy.py b/gbp/deb/policy.py
new file mode 100644
index 0000000..9c1b018
--- /dev/null
+++ b/gbp/deb/policy.py
@@ -0,0 +1,83 @@
+# vim: set fileencoding=utf-8 :
+#
+# (C) 2006,2007,2011 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 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
+"""provides some debian source package related helpers"""
+
+import os
+import re
+
+from gbp.pkg import (PkgPolicy, compressor_opts)
+
+
+class DebianPkgPolicy(PkgPolicy):
+    """
+    Packaging policy for Debian Source Packages
+
+    >>> DebianPkgPolicy.is_valid_upstreamversion('1:9.8.4.dfsg.P1-6')
+    True
+    >>> DebianPkgPolicy.is_valid_upstreamversion('-1')
+    False
+    """
+
+    # Valid package names according to Debian Policy Manual 5.6.1:
+    # "Package names (both source and binary, see Package, Section 5.6.7)
+    # must consist only of lower case letters (a-z), digits (0-9), plus (+)
+    # and minus (-) signs, and periods (.). They must be at least two
+    # characters long and must start with an alphanumeric character."
+    packagename_re = re.compile("^[a-zA-Z0-9][a-zA-Z0-9\.\+\-~]+$")
+    packagename_msg = """Package names must be at least two characters long, start with an
+    alphanumeric and can only containg letters (a-z,A-Z), digits
+    (0-9), plus signs (+), minus signs (-), periods (.) and hyphens (~)"""
+
+    # Valid upstream versions according to Debian Policy Manual 5.6.12:
+    # "The upstream_version may contain only alphanumerics[32] and the
+    # characters . + - : ~ (full stop, plus, hyphen, colon, tilde) and
+    # should start with a digit. If there is no debian_revision then hyphens
+    # are not allowed; if there is no epoch then colons are not allowed."
+    # Since we don't know about any epochs and debian revisions yet, the
+    # last two conditions are not checked.
+    upstreamversion_re = re.compile("^[0-9][a-zA-Z0-9\.\+\-\:\~]*$")
+    upstreamversion_msg = """Upstream version numbers must start with a digit and can only containg lower case
+    letters (a-z), digits (0-9), full stops (.), plus signs (+), minus signs
+    (-), colons (:) and tildes (~)"""
+
+    @staticmethod
+    def build_tarball_name(name, version, compression, dir=None):
+        """
+        Given a source package's I{name}, I{version} and I{compression}
+        return the name of the corresponding upstream tarball.
+
+        >>> DebianPkgPolicy.build_tarball_name('foo', '1.0', 'bzip2')
+        'foo_1.0.orig.tar.bz2'
+        >>> DebianPkgPolicy.build_tarball_name('bar', '0.0~git1234', 'xz')
+        'bar_0.0~git1234.orig.tar.xz'
+
+        @param name: the source package's name
+        @type name: C{str}
+        @param version: the upstream version
+        @type version: C{str}
+        @param compression: the desired compression
+        @type compression: C{str}
+        @param dir: a directory to prepend
+        @type dir: C{str}
+        @return: the tarballs name corresponding to the input parameters
+        @rtype: C{str}
+        """
+        ext = compressor_opts[compression][1]
+        tarball = "%s_%s.orig.tar.%s" % (name, version, ext)
+        if dir:
+            tarball = os.path.join(dir, tarball)
+        return tarball