Move DscFile to separate module

1 files changed, 113 insertions, 0 deletions

diff --git a/gbp/deb/dscfile.py b/gbp/deb/dscfile.py
new file mode 100644
index 0000000..6f450e2
--- /dev/null
+++ b/gbp/deb/dscfile.py
@@ -0,0 +1,113 @@
+# vim: set fileencoding=utf-8 :
+#
+# (C) 2006,2007,2011,2013 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 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.errors import GbpError
+from gbp.pkg import UpstreamSource
+from gbp.deb.policy import DebianPkgPolicy
+
+class DscFile(object):
+    """Keeps all needed data read from a dscfile"""
+    compressions = r"(%s)" % '|'.join(UpstreamSource.known_compressions())
+    pkg_re = re.compile(r'Source:\s+(?P<pkg>.+)\s*')
+    version_re = re.compile(r'Version:\s((?P<epoch>\d+)\:)?'
+                             '(?P<version>[%s]+)\s*$'
+                            % DebianPkgPolicy.debianversion_chars)
+    tar_re = re.compile(r'^\s\w+\s\d+\s+(?P<tar>[^_]+_[^_]+'
+                         '(\.orig)?\.tar\.%s)' % compressions)
+    diff_re = re.compile(r'^\s\w+\s\d+\s+(?P<diff>[^_]+_[^_]+'
+                          '\.diff.(gz|bz2))')
+    deb_tgz_re = re.compile(r'^\s\w+\s\d+\s+(?P<deb_tgz>[^_]+_[^_]+'
+                             '\.debian.tar.%s)' % compressions)
+    format_re = re.compile(r'Format:\s+(?P<format>[0-9.]+)\s*')
+
+    def __init__(self, dscfile):
+        self.pkg = ""
+        self.tgz = ""
+        self.diff = ""
+        self.deb_tgz = ""
+        self.pkgformat = "1.0"
+        self.debian_version = ""
+        self.upstream_version = ""
+        self.native = False
+        self.dscfile = os.path.abspath(dscfile)
+
+        f = file(self.dscfile)
+        fromdir = os.path.dirname(os.path.abspath(dscfile))
+        for line in f:
+            m = self.version_re.match(line)
+            if m and not self.upstream_version:
+                if '-' in m.group('version'):
+                    self.debian_version = m.group('version').split("-")[-1]
+                    self.upstream_version = "-".join(m.group('version').split("-")[0:-1])
+                    self.native = False
+                else:
+                    self.native = True # Debian native package
+                    self.upstream_version = m.group('version')
+                if m.group('epoch'):
+                    self.epoch = m.group('epoch')
+                else:
+                    self.epoch = ""
+                continue
+            m = self.pkg_re.match(line)
+            if m:
+                self.pkg = m.group('pkg')
+                continue
+            m = self.deb_tgz_re.match(line)
+            if m:
+                self.deb_tgz = os.path.join(fromdir, m.group('deb_tgz'))
+                continue
+            m = self.tar_re.match(line)
+            if m:
+                self.tgz = os.path.join(fromdir, m.group('tar'))
+                continue
+            m = self.diff_re.match(line)
+            if m:
+                self.diff = os.path.join(fromdir, m.group('diff'))
+                continue
+            m = self.format_re.match(line)
+            if m:
+                self.pkgformat = m.group('format')
+                continue
+        f.close()
+
+        if not self.pkg:
+            raise GbpError("Cannot parse package name from '%s'" % self.dscfile)
+        elif not self.tgz:
+            raise GbpError("Cannot parse archive name from '%s'" % self.dscfile)
+        if not self.upstream_version:
+            raise GbpError("Cannot parse version number from '%s'" % self.dscfile)
+        if not self.native and not self.debian_version:
+            raise GbpError("Cannot parse Debian version number from '%s'" % self.dscfile)
+
+    def _get_version(self):
+        version = [ "", self.epoch + ":" ][len(self.epoch) > 0]
+        if self.native:
+            version += self.upstream_version
+        else:
+            version += "%s-%s" % (self.upstream_version, self.debian_version)
+        return version
+
+    version = property(_get_version)
+
+    def __str__(self):
+        return "<%s object %s>" % (self.__class__.__name__, self.dscfile)
+
+# vim:et:ts=4:sw=4:et:sts=4:ai:set list listchars=tab\:»·,trail\:·: