""" Represents one spec file within a SpecRepository """

# 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 Library 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.
# Copyright 2004 Dries Verachtert

# a place holder for some values/information about 1 spec file in one of the SpecRepository objects
# also calculates the SHA1 checksum so it is easy to check if a file is changed or not

from log4py import Logger
from specfiletags import SpecFileTags
import sha, os
import config

class SpecRepositorySpecFile:
    def __init__(self, specRepository,subDir,fileName):
        self.__cat = Logger().get_instance(self)
        self.__specRepository = specRepository
        self.__subDir = subDir
        self.__fileName = fileName
        self.__checksum = self.__calculateCheckSum()
        self.__id = None
        self.rpmfilenames = []
        self.srpmfilenames = []
        self.binaryrpms = []
        self.sourcerpms = []
        #self.cat.debug("start, specRepositoryName=" + self.specRepositoryName + ",specRepositoryRootDir=" + self.specRepositoryRootDir + ",subDir=" + self.subDir + ",fileName=" + self.fileName)

    def getCheckSum(self):
        return self.__checksum
    
    # each version of a spec file should have a unique version
    # the version is defined by the SpecRepository
    def getVersion(self):
        return self.__specRepository.getSpecFileVersion(self)
    
    # construct an object which contains all the tags within this spec file
    # definetags is something like   --define el4 1        or   --define fc2 1 --define au1.92 1
    def getSpecFileTags(self, definetags):
        return SpecFileTags(self.getFullPath(), definetags)
        
    def __calculateCheckSum(self):
        fullFileName = self.getFullPath()
        type = config.Config.getInstance().getCheckSumType()
        if type == "SHA":
            s = sha.new()
            f = open(fullFileName, 'r')
            line = f.readline()
            while line != '':
                s.update(line)
                line = f.readline()
            f.close()
            return s.hexdigest()
        else:
            return str(os.path.getmtime(fullFileName)) + "-" + str(os.path.getsize(fullFileName))
    
    def getSpecRepository(self):
        return self.__specRepository
        
    def getSubDir(self):
        return self.__subDir
        
    def getFileName(self):
        return self.__fileName
    
    # the following should be unique within one specrepository!!
    def getPathFromRoot(self):
        return self.__subDir + '/' + self.__fileName

    def getFullPath(self):
        return self.__specRepository.getRootDirectory() + "/" + self.getPathFromRoot()
        
    def setId(self, newId):
        self.__id = newId
        
    def getId(self):
        return self.__id
    
    def toString(self):
        return "SpecRepositorySpecFile: subDir=" + str(self.getSubDir()) + ",fileName=" + str(self.getFileName()) + ",specRepository.name=" + str(self.getSpecRepository().getName())