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# This file is part of Buildbot.  Buildbot 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, version 2. 

# 

# 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., 51 

# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 

# 

# Portions Copyright Buildbot Team Members 

# Portions Copyright Dan Radez <dradez+buildbot@redhat.com> 

# Portions Copyright Steve 'Ashcrow' Milner <smilner+buildbot@redhat.com> 

""" 

library to populate parameters from and rpmspec file into a memory structure 

""" 

 

import re 

from buildbot.steps.shell import ShellCommand 

 

 

class RpmSpec(ShellCommand): 

    """ 

    read parameters out of an rpm spec file 

    """ 

 

    #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 isinstance(self.specfile, str): 

            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)