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# Dan Radez <dradez+buildbot@redhat.com>
# Steve 'Ashcrow' Milner <smilner+buildbot@redhat.com>
#
# This software may be freely redistributed under the terms of the GNU
# general public license.
#
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
"""
library to populate parameters from and rpmspec file into a memory structure
"""
from buildbot.steps.shell import ShellCommand
class RpmSpec(ShellCommand):
"""
read parameters out of an rpm spec file
"""
import re
import types
#initialize spec info vars and get them from the spec file
n_regex = re.compile('^Name:[ ]*([^\s]*)')
v_regex = re.compile('^Version:[ ]*([0-9\.]*)')
def __init__(self, specfile=None, **kwargs):
"""
Creates the RpmSpec object.
@type specfile: str
@param specfile: the name of the specfile to get the package
name and version from
@type kwargs: dict
@param kwargs: All further keyword arguments.
"""
self.specfile = specfile
self._pkg_name = None
self._pkg_version = None
self._loaded = False
def load(self):
"""
call this function after the file exists to populate properties
"""
# If we are given a string, open it up else assume it's something we
# can call read on.
if type(self.specfile) == self.types.StringType:
f = open(self.specfile, 'r')
else:
f = self.specfile
for line in f:
if self.v_regex.match(line):
self._pkg_version = self.v_regex.match(line).group(1)
if self.n_regex.match(line):
self._pkg_name = self.n_regex.match(line).group(1)
f.close()
self._loaded = True
# Read-only properties
loaded = property(lambda self: self._loaded)
pkg_name = property(lambda self: self._pkg_name)
pkg_version = property(lambda self: self._pkg_version)
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