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#!/usr/bin/python
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# Copyright 2008: Andreas Tille <tille@debian.org>
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# License: GPL
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# CDD Meta packages are listing a set of Dependencies
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# These might be fullfilled by the Debian package
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# set or not.
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#
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# This interface provides some classes that contains
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# all available information about this Dependency ,
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# like whether it is an official package or not,
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# in which distribution it is contained
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# or if it is not contained it obtains information
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# from tasks file about home page, license, WNPP etc.
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import sys
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import os
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import urllib
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import StringIO
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import gzip
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from debian_bundle import deb822
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BASEURL = 'http://ftp.debian.org/'
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REPOS = { 'debian-med' : "svn://svn.debian.org/svn/cdd/projects/med/trunk/debian-med/tasks/",
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'debian-edu' : "svn://svn.debian.org/svn/debian-edu/trunk/src/debian-edu/tasks/",
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'debian-science' : "svn://svn.debian.org/svn/cdd/projects/science/trunk/debian-science/tasks/",
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}
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HTMLBASE = "/var/lib/gforge/chroot/home/groups"
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def InitTasksFiles(cddname):
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# Obtain tasks files from SVN of a CDD
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# cddname can be: debian-med, debian-edu, debian-science
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# In case you know another CDD that uses the meta package
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# technology make sure to include the location in the
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# REPOS dictionary
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#
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tasksdir = "%s/%s/data/tasks" % (HTMLBASE, cddname)
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# Checkout/Update tasks from SVN
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if os.path.isdir(tasksdir+'/.svn'):
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os.system("svn up %s %s >> /dev/null" % (REPOS[cddname], tasksdir))
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else:
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os.system("mkdir -p %s" % (tasksdir))
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os.system("svn co %s %s >> /dev/null" % (REPOS[cddname], tasksdir))
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return tasksdir
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def SplitDescription(description):
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# Split first line of Description value as short description
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lines = description.splitlines()
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ShortDesc = lines[0]
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LongDesc = ''
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for line in lines[1:]:
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LongDesc += line.strip() + '\n'
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return (ShortDesc, LongDesc)
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class Task:
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# This class just stores name and description of a task package
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# FIXME: This is probably not used anymore and can be deleted
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def __init__(self, cddname=None, taskname=None, shortDesc=None, longDesc=None):
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self.cddname = cddname
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self.taskname = taskname
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self.shortDesc = shortDesc
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self.longDesc = longDesc
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class DependantPackage:
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# Hold information about a program that is in dependency list
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# The
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def __init__(self, cddname=None, taskname=None):
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self.cddname = cddname # CDD that includes the package in dependency list
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self.taskname = taskname # Task which includes the Dependency
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self.pkg = None # Name of dependant package
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self.dependencytype = None # Values: 'Depends', 'Recommends', 'Suggests'
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self.dists = [] # Values: 'stable', 'testing', 'unstable', etc.
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self.component = {} # Values: 'main', 'contrib', 'non-free', 'experimental'
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self.why = None # basically used as comment
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# The following keys will be mostly used for programs that
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# are not yet existing in Debian and will go to our todo list
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self.homepage = '#' # Homepage of program
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self.version = None # Version of program
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self.responsible = None # E-Mail address of issuer of ITP or some person
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# who volunteered to care for this program
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self.license = None # License of program
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self.section = None # Section of package in the Debian hierarchy
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self.filename = None # Filename of package in the Debian pool
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self.wnpp = None # WNPP bug number
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self.pkgShortDesc = None # Prospective packages should have a description ...
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self.pkgLongDesc = None # ... which could be copied to (or from if exists)
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# WNPP bug and finally can be used for packaging
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self.pkgURL = None # URL of inofficial package
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# sort these objects according to the package name
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def __cmp__(self, other):
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# Comparing with None object has to return something reasonable
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if other == None:
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return -2
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# Sort according to package name
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return cmp(self.pkg, other.pkg)
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class CddDependencies:
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# Provide a list of depencencies defined in Metapackages
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# This class concerns _all_ tasks of a CDD and is the most
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# complete source of information. If only a single task
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# should be handled by a tool that uses cddtasktools
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# probably the class TaskDependencies (see below) is
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# your friend
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def __init__(self, cddname):
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# This Instance of the Available class contains all
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# information about packages that are avialable in Debian
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# See below for more information about Available class
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global available
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if cddname not in REPOS.keys():
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print >>sys.stderr, "Unknown CDD."
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return None
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self.cddname = cddname
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self.tasksdir = InitTasksFiles(self.cddname)
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self.tasks = {}
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self.tasknames = []
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self.available = available
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def GetTasknames(self):
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for task in os.listdir(self.tasksdir):
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if os.path.isfile("%s/%s" % (self.tasksdir, task)):
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self.tasknames.append(task)
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self.tasknames.sort()
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def GetAllDependencies(self):
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if self.tasknames == []:
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self.GetTasknames()
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for task in self.tasknames:
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td = TaskDependencies(self.cddname, task)
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td.GetTaskDependencies()
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self.tasks[task] = td
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def GetNamesOnlyDict(self, dependencytypes=()):
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# David Paleino needs for his web tools a dictionary
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# { taskname : [list of dependencies]}
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# This will be prepared here from the main
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# datastructure
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ret = {}
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if dependencytypes == ():
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dependencytypes=('official', 'unofficial', 'prospective')
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for task in self.tasknames:
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tdeps = self.tasks[task]
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list = []
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for dep in dependencytypes:
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for tdep in tdeps.dependencies[dep]:
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list.append(tdep.pkg)
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ret[task] = list
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return ret
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def GetListOfDepsForTask(self, task, dependencytypes=()):
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# David Paleino needs for his web tools a dictionary
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# [list of dependencies]
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# This will be prepared here from the main
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# datastructure
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ret = []
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if dependencytypes == ():
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dependencytypes=('official', 'unofficial', 'prospective')
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tdeps = self.tasks[task]
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for dep in dependencytypes:
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for tdep in tdeps.dependencies[dep]:
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ret.append(tdep.pkg)
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return ret
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def GetTaskDescDict(self):
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# David Paleino needs for his web tools a dictionary
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# { taskname : { 'Task' : task
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# 'ShortDesc' : shortdesc
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# 'LongDesc' : longdesc }
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# This will be prepared here from the main
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# datastructure
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ret = {}
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for task in self.tasknames:
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tdeps = self.tasks[task]
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tdict = {}
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tdict['Task'] = tdeps.taskPrintedName
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tdict['ShortDesc'] = tdeps.taskShortDesc
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tdict['LongDesc'] = tdeps.taskLongDesc
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ret[task] = tdict
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return ret
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class TaskDependencies:
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# List of depencencies defined in one Metapackage
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def __init__(self, cddname, task):
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if cddname not in REPOS.keys():
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print >>sys.stderr, "Unknown CDD."
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return None
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self.cddname = cddname
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self.tasksdir = InitTasksFiles(self.cddname)
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self.taskfile = self.tasksdir+'/'+task
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if os.path.isfile(self.taskfile):
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self.task = task
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else:
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print >>sys.stderr, "No such task file %s." % self.taskfile
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return None
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# Dictionary with dependencytype as key and list of DependantPackage
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# instances
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self.dependencies = { 'official' : [],
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'unofficial' : [],
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'prospective' : []
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}
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self.available = available
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# Main information for a task
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self.taskPrintedName = None
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self.taskShortDesc = None
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self.taskLongDesc = None
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def GetTaskDependencies(self):
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# First obtain information about Packages
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# available in Debian
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# This might take some time.
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# Caching comes to mind, but the script is supposed
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# to be run not more frequently than mirror pushes
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# and thus only testing the script might profit from
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# caching
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self.available.GetPackageNames()
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# These keys might contain more than one item that
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# has to be separated to detect the dependency
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dependency_keys = [ "Depends", "Recommends", "Suggests" ]
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f = file(self.taskfile)
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for stanza in deb822.Sources.iter_paragraphs(f):
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# Why and Responsible can be valid for more than one dependency
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# Store them in strings and use them for all Dependent Package objects
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why = None
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responsible = None
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dep = None
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for key in stanza:
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if key == 'Task':
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self.taskPrintedName = stanza['task']
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continue
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if key == 'Description':
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(self.taskShortDesc, self.taskLongDesc) = SplitDescription(stanza['description'])
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continue
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if key == 'Why':
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why = stanza['why']
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continue
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if key == 'Responsible':
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responsible = stanza['responsible']
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continue
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debug = 0
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if key in dependency_keys:
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debug += 1
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# turn alternatives ('|') into real depends for this purpose
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# because we are finally interested in all alternatives
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dependencies = stanza[key].replace('|',',').split(',')
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# Collect all dependencies in one line first,
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# create an object for each later
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deps_in_one_line = []
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for dependency in dependencies:
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deps_in_one_line.append(dependency.strip())
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for dep_in_line in deps_in_one_line:
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# If there are more than one dependencies in one line
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# just put the current one into the right list of dependencies
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# before initiating the next instance
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if dep != None:
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self.dependencies[self._FindDependencyType(dep)].append(dep)
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dep = DependantPackage(self.cddname, self.task)
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# Store the comments in case they might be usefull for later applications
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dep.why = why
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dep.responsible = responsible
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dep.dependencytype = key
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dep.pkg = dep_in_line
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dep.dists.append(self.available.dist)
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# Find the component the Dependency might be in
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for component in self.available.components:
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if dep.pkg in self.available.packages[component].keys():
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dep.component = component
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dep.pkgShortDesc = self.available.packages[component][dep.pkg].pkgShortDesc
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dep.pkgLongDesc = self.available.packages[component][dep.pkg].pkgLongDesc
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dep.homepage = self.available.packages[component][dep.pkg].homepage
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dep.version = self.available.packages[component][dep.pkg].version
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# TODO: Assuming 'unstable' is wrong --> handle list of dists
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dep.pkgURL = 'http://packages.debian.org/' + 'unstable/' + \
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self.available.packages[component][dep.pkg].section + \
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'/' + dep.pkg
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dep.filename = self.available.packages[component][dep.pkg].filename
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break # The same package should be only in one component
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# At least I currently see no reason for having a
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# package with the same name in main and contrib
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# at the same time for instance
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continue
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# The following keys will be mostly used for programs that
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# are not yet existing in Debian and will go to our todo list
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if key == 'homepage':
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if dep != None:
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dep.homepage = stanza['homepage']
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else:
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print >>stderr, "Dep not initiatet before Homepage %s -> something is wrong." \
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% stanza['homepage']
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elif key == 'section':
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if dep != None:
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dep.section = stanza['section']
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else:
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print >>stderr, "Dep not initiatet before Section %s -> something is wrong." \
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% stanza['license']
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elif key == 'License':
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if dep != None:
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dep.license = stanza['license']
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else:
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print >>stderr, "Dep not initiatet before License %s -> something is wrong." \
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% stanza['license']
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elif key == 'WNPP':
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if dep != None:
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dep.wnpp = stanza['wnpp']
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else:
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print >>stderr, "Dep not initiatet before WNPP %s -> something is wrong." \
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% stanza['wnpp']
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elif key == 'Pkg-URL':
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if dep != None:
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dep.pkgURL = stanza['pkg-url']
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else:
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print >>stderr, "Dep not initiatet before Pkg-URL %s -> something is wrong." \
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% stanza['pkg-url']
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elif key == 'Pkg-Description':
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if dep == None:
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print >>stderr, "Dep not initiatet before Pkg-Description %s -> something is wrong." \
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% stanza['pkg-description'].splitlines()[0]
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else:
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(dep.pkgShortDesc, dep.pkgLongDesc) = SplitDescription(stanza['pkg-description'])
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else:
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print "Unknown key '%s': %s" % (key, stanza[key])
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if dep != None:
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self.dependencies[self._FindDependencyType(dep)].append(dep)
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f.close()
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for dependency in self.dependencies.keys():
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self.dependencies[dependency].sort()
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def _FindDependencyType(self, dep):
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# Return the name of the Dependencytype to append the Dependency to the right list
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if dep.component != {}:
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return 'official'
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if dep.pkgURL != None:
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return 'unofficial'
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return 'prospective'
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class Available:
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# Information about available packages
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#
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# Usage example:
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# available = Available( # Initialize instance
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# dist='testing', # (default='unstable')
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# components=('main'), # Regard only main, default: main, contrib, non-free
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# source=1 # Use source package names, default: use binaries
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# arch='sparc' # (default='i386')
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# )
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#
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# available.GetPackageNames() # Actually parse the Packages files to obtain needed information
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# # This has to be done at least once. It is verified that the effort
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# # to obtain package information is not done twice per run
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def __init__(self, dist=None, components=(), source=None, arch=None):
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self.source = 'Packages.gz'
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if source != None:
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self.source = 'Sources.gz'
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self.binary = 'source'
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| 378 |
if source == None:
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if arch == None:
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# use arch=i386 as default because it contains most packages
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self.binary = 'binary-i386'
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else:
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self.binary = 'binary-' + arch
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self.dist = 'unstable'
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if dist != None:
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self.dist = dist
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self.components = ('main', 'contrib', 'non-free')
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if components != ():
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self.components = components
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# The dictionary packages contains the component as key
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# The values are dictionaries holding package names as key
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# and a DependantPackage object as values
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self.packages = {}
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for component in self.components:
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self.packages[component] = {}
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def GetPackageNames(self):
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# Fetch Packages / Sources file and get list of package names out of it
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# Check whether package names are just known
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for component in self.packages:
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if self.packages[component] != {}:
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# Just got the Package names because at least one component
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# has non zero elements
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return
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for component in self.components:
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f = urllib.urlopen(BASEURL+'/dists/'+self.dist+'/'+component+'/'+self.binary+'/'+self.source)
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compresseddata = f.read()
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compressedstream = StringIO.StringIO(compresseddata)
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g = gzip.GzipFile(fileobj=compressedstream)
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for stanza in deb822.Sources.iter_paragraphs(g, shared_storage=False):
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deppkg = DependantPackage()
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(deppkg.pkgShortDesc, deppkg.pkgLongDesc) = SplitDescription(stanza['description'])
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try:
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deppkg.homepage = stanza['homepage']
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| 417 |
except KeyError:
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deppkg.homepage = '#' # Not every package has a homepage tag
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except:
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deppkg.homepage = '.' # Something else in case unexpected things happen
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| 421 |
deppkg.version = stanza['version'].split('-')[0]
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deppkg.section = stanza['section']
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deppkg.filename = BASEURL+stanza['filename']
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self.packages[component][stanza['package']] = deppkg
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f.close()
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available = Available()
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