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- #! /usr/bin/python
- #
- # copyright (c) 2006 Josselin Mouette <joss@debian.org>
- # Licensed under the GNU Lesser General Public License, version 2.1
- # See COPYING for details
-
- import sys,os,shutil
- from optparse import OptionParser
- from py_compile import compile, PyCompileError
- sys.path.append("/usr/lib/python-support/private/")
- import pysupport
- from pysupport import py_supported,py_installed,py_oldversions
-
- basepath='/var/lib/python-support'
- sourcepath='/usr/share/python-support'
- extensionpath='/usr/lib/python-support'
-
- parser = OptionParser(usage="usage: %prog [-v] [-c] package_directory [...]\n"+
- " %prog [-v] [-c] package.dirs [...]\n"+
- " %prog [-v] [-a|-f|-p]")
- parser.add_option("-v", "--verbose", action="store_true", dest="verbose",
- help="verbose output", default=False)
- parser.add_option("-c", "--clean", action="store_true", dest="clean_mode",
- help="clean modules instead of compiling them",
- default=False)
- parser.add_option("-a", "--rebuild-all", action="store_true",
- dest="rebuild_all", default=False,
- help="rebuild all private modules for a new default python version")
- parser.add_option("-f", "--force-rebuild-all", action="store_true",
- dest="rebuild_everything", default=False,
- help="rebuild all modules, including public modules for all python versions")
- parser.add_option("-p", "--post-install", action="store_true", dest="post_install",
- help="run post-installation operations, common to many packages",
- default=False)
- parser.add_option("-b", "--bytecompile", action="store_true", dest="force_private",
- help="[deprecated] byte-compilation mode: only handle private modules",
- default=False)
- parser.add_option("-i", "--install", action="store_true", dest="force_public",
- help="[deprecated] installation mode: only handle public modules",
- default=False)
- (options, args) = parser.parse_args()
-
- def debug(x):
- if(options.verbose):
- print x
-
- # I should use the sets type instead
- def isect(l1,l2):
- return [i for i in l1 if i in l2]
-
- def concat(l1,l2):
- return l1 + [i for i in l2 if i not in l1]
-
- versions_dict={}
-
- def dir_versions(dir):
- if dir not in versions_dict:
- verfile=os.path.join(dir,'.version')
- if dir.startswith(extensionpath):
- # Directory in /usr/lib: only one version
- vers=os.path.split(dir)[1]
- if vers in py_supported:
- versions_dict[dir]=[vers]
- else:
- versions_dict[dir]=[]
- elif dir.startswith(sourcepath):
- # Directory in /usr/share
- extdir=dir.replace(sourcepath,extensionpath,1)
- if os.path.exists(verfile):
- # If we have a .version, use it
- versions_dict[dir]=pysupport.version_list(file(verfile).readline())
- elif os.path.isdir(extdir):
- # Try to obtain the list of supported versions
- # from the extensions in /usr/lib
- versions_dict[dir]=isect(py_supported,os.listdir(extdir))
- else:
- # Otherwise, support all versions
- versions_dict[dir]=py_supported
- else:
- raise "[Internal error] %s: unsupported path for byte-compilation."
- return versions_dict[dir]
-
- def bytecompile_only(basedir,dir,file):
- if file.endswith('.py'):
- fullpath=os.path.join(basedir,dir,file)
- debug("compile "+fullpath+'c')
- try:
- # Note that compile doesn't raise PyCompileError by default
- compile(fullpath, doraise=True)
- except IOError, (errno, strerror):
- sys.stderr.write("WARNING: I/O error while trying to byte-compile %s (%s): %s\n" % (fullpath, errno, strerror))
- except PyCompileError, inst:
- sys.stderr.write("WARNING: compile error while trying to byte-compile %s: %s\n" % (fullpath, inst.msg))
- except:
- sys.stderr.write("WARNING: unexpected error while trying to byte-compile %s: %s\n" % (fullpath, sys.exc_info()[0]))
-
- def clean_simple(basedir,dir,file):
- if file.endswith('.py'):
- for ext in ['c','o']:
- fullpath=os.path.join(basedir,dir,file+ext)
- if os.path.exists(fullpath):
- debug("remove "+fullpath)
- os.remove(fullpath)
-
- def install_modules(versions):
- def install_modules_func(basedir,dir,file):
- if file == '.version':
- return
- fullpath=os.path.join(basedir,dir,file)
- for py in isect(dir_versions(basedir),versions):
- destpath=os.path.join(basepath,py,dir,file)
- try:
- os.makedirs(os.path.join(basepath,py,dir))
- except OSError:
- pass
- if file[-4:] not in ['.pyc','.pyo']:
- debug("link "+destpath)
- # os.path.exists returns False for broken symbolic links
- if os.path.exists(destpath) or os.path.islink(destpath):
- if file!="__init__.py" or (os.path.exists(destpath) and os.path.getsize(destpath)):
- # Oops, the file already exists and is not empty.
- # Check whether we are conflicting with something else.
- for otherdir in dirs_i:
- otherextdir = os.path.join(otherdir.replace(sourcepath,extensionpath,1),py)
- if basedir in [otherdir,otherextdir]:
- continue
- if os.path.exists(os.path.join(otherdir,dir,file)) or os.path.exists(os.path.join(otherextdir,dir,file)):
- parser.error("Trying to overwrite %s which is already provided by %s"%(os.path.join(dir,file),otherdir))
- # The file is already here, probably from the previous version.
- # Let's proceed.
- debug("overwrite "+destpath)
- else:
- debug("overwrite namespace "+destpath)
- os.remove(destpath)
- os.symlink(fullpath,destpath)
- # Files are NOT byte-compiled here, this will be done later.
- return install_modules_func
-
- def process(basedir,func):
- debug("Looking at %s..."%(basedir))
- for dir, dirs, files in os.walk(basedir):
- dir = dir[len(basedir):].lstrip('/')
- for file in files:
- func(basedir, dir, file)
- for file in dirs:
- if os.path.islink(os.path.join(basedir,dir,file)):
- func(basedir, dir, file)
-
- def process_extensions(basedir,func,version=None):
- basedir=basedir.replace(sourcepath,extensionpath,1)
- if os.path.isdir(basedir):
- for vers in os.listdir(basedir):
- if version and vers != version:
- continue
- verdir=os.path.join(basedir,vers)
- if os.path.isdir(verdir):
- process(verdir,func([vers]))
-
- def dirlist_file(f):
- return [ l.rstrip('\n') for l in file(f) if len(l)>1 ]
-
- def bytecompile_all(py,path=None):
- if not path:
- path=os.path.join(basepath,py)
- if not os.path.isdir(path):
- return
- debug("Byte-compilation of whole %s..."%path)
- os.spawnl(os.P_WAIT, '/usr/bin/'+py, py,
- os.path.join('/usr/lib/',py,'compileall.py'), '-q', path)
-
- def bytecompile_privatedir(basedir):
- versionfile=os.path.join(basedir,".pyversion")
- if os.path.isfile(versionfile):
- specific_version=file(versionfile).readline().rstrip('\n')
- bytecompile_all("python"+specific_version,basedir)
- else:
- process(basedir,bytecompile_only)
-
- def create_dotpath(py,dirhash=None):
- path=os.path.join(basepath,py)
- pathfile=os.path.join(path,".path")
- debug("Generation of %s..."%pathfile)
- pathlist=[path]
- for f in os.listdir(path):
- f=os.path.join(path,f)
- if f.endswith(".pth") and os.path.isfile(f):
- for l in file(f):
- l=l.rstrip('\n')
- pathlist.append(l)
- l2=os.path.join(path,l)
- pathlist.append(l2)
- if dirhash:
- dirhash[l2]=False
- fd=file(pathfile,"w")
- fd.writelines([l+'\n' for l in pathlist])
- fd.close()
-
- def post_change_stuff(py):
- # All the changes that need to be done after anything has changed
- # in a /var/lib/python-support/pythonX.Y directory
- # * Cleanup of all dangling symlinks that are left out after a package
- # is upgraded/removed.
- # * The namespace packages are here because python doesn't consider a
- # directory to be able to contain packages if there is no __init__.py
- # file (yes, this is completely stupid).
- # * The .path file must be created by concatenating all those .pth
- # files that extend sys.path (this also badly sucks).
- # * Byte-compilation of all .py files that haven't already been
- path=os.path.join(basepath,py)
- if not os.path.isdir(path):
- return
- # First, remove any dangling symlinks.
- # In the same loop, we find which directories may need a namespace package
- dirhash={}
- for dir, dirs, files in os.walk(path):
- dirhash[dir]=False
- files.sort() # We need the .py to appear before the .pyc
- for f in files+dirs:
- # We also examine dirs as some symlinks are dirs
- abspath=os.path.join(dir,f)
- islink=os.path.islink(abspath)
- if islink:
- if not os.path.exists(abspath):
- # We refer to a file that was removed
- debug("remove "+abspath)
- os.remove(abspath)
- continue
- srcfile = os.readlink (abspath)
- # Remove links left here after a change in the supported python versions for a package
- if srcfile.startswith(sourcepath):
- if py not in dir_versions (os.path.join(sourcepath,srcfile[len(sourcepath)+1:].split("/",1)[0])):
- debug("remove "+abspath)
- os.remove(abspath)
- continue
- if f[-4:] in ['.pyc', '.pyo']:
- if not os.path.exists(abspath[:-1]):
- debug("remove "+abspath)
- os.remove(abspath)
- continue
- elif f[-3:] in ['.py', '.so']:
- if islink or f!='__init__.py':
- # List the directory as maybe needing a namespace packages
- d=dir
- while dirhash.has_key(d) and not dirhash[d]:
- dirhash[d]=True
- d=os.path.dirname(d)
- # Remove the directory if it is empty after our crazy removals
- try:
- os.removedirs(dir)
- except OSError:
- pass
- dirhash[path]=False
- # Then, find which directories belong in a .pth file
- # These directories don't need a namespace package, so we
- # pass the dirhash
- create_dotpath(py,dirhash)
- # Finally, create/remove namespace packages
- for dir in dirhash:
- initfile=os.path.join(dir,"__init__.py")
- if dirhash[dir]:
- if not os.path.exists(initfile):
- debug("create namespace "+initfile)
- file(initfile,"w").close()
- else:
- for e in ['','c','o']:
- if os.path.exists(initfile+e):
- debug('remove namespace '+initfile+e)
- os.remove(initfile+e)
- try:
- os.removedirs(dir)
- except OSError:
- pass
- bytecompile_all(py)
-
- # Parse arguments
- do_dirs_i=[]
- do_dirs_b=[]
- for arg in args:
- if os.path.isabs(arg):
- if not arg.startswith(sourcepath):
- parser.error("%s is not in the python-support directory."%arg)
- else:
- arg=os.path.join(sourcepath,arg)
- if not os.path.exists(arg):
- if options.clean_mode:
- sys.stderr.write("WARNING: %s does not exist.\n Some bytecompiled files may be left behind.\n"%arg)
- continue
- else:
- parser.error("%s does not exist"%arg)
- if arg.endswith('.dirs'):
- do_dirs_b+=dirlist_file(arg)
- if options.force_public:
- parser.error("Option -i cannot be used with a private module .dirs file.")
- elif os.path.isdir(arg):
- do_dirs_i.append(arg)
- if options.force_private:
- parser.error("Option -b cannot be used with a public module directory.")
- else:
- parser.error("%s is not a directory"%arg)
-
-
- # Read full list from the source directory
- # directories are stuff to be installed
- # foo.dirs files list directories to bytecompile in place
- dirs_b = []
- dirs_i = []
- for f in os.listdir(sourcepath):
- f=os.path.join(sourcepath,f)
- if os.path.isdir(f):
- dirs_i.append(f)
- elif f.endswith('.dirs'):
- dirs_b+=dirlist_file(f)
-
- if not os.path.isdir(basepath):
- os.mkdir(basepath)
-
- if options.rebuild_everything:
- options.rebuild_all = True
- for pyver in py_supported:
- dir = os.path.join(basepath,pyver)
- if os.path.isdir(dir):
- shutil.rmtree(dir)
-
- # Check for changes in installed python versions
- for pyver in py_oldversions+py_supported:
- dir = os.path.join(basepath,pyver)
- # Check for ".path" because sometimes the directory already exists
- # while the python version isn't installed, because of some .so's.
- if pyver in py_installed and not os.path.isfile(os.path.join(dir,".path")):
- debug("Building all modules in %s..."%(dir))
- for basedir in dirs_i:
- process(basedir,install_modules([pyver]))
- process_extensions(basedir,install_modules,pyver)
- # Here we need to launch post_change_stuff because otherwise we could
- # end up without the .path file that is checked 6 lines earlier
- post_change_stuff (pyver)
- if pyver not in py_installed and os.path.isdir(dir):
- debug("Removing obsolete directory %s..."%(dir))
- shutil.rmtree(dir)
-
- if options.rebuild_all:
- for basedir in dirs_b:
- process(basedir,clean_simple)
- bytecompile_privatedir(basedir)
-
-
- # Now for the processing of what was handed on the command line
- for basedir in do_dirs_b:
- if not options.clean_mode:
- bytecompile_privatedir(basedir)
- else:
- process(basedir,clean_simple)
-
- need_dotpath = False
- need_postinstall = []
- for basedir in do_dirs_i:
- need_postinstall = concat(need_postinstall,isect(dir_versions(basedir),py_installed))
- if not options.clean_mode:
- process(basedir,install_modules(py_installed))
- process_extensions(basedir,install_modules)
- for f in os.listdir(basedir):
- if f.endswith(".pth"):
- need_dotpath = True
-
- # Only do the funny and time-consuming things when the -p option is
- # given, e.g when python-support is triggered.
- if need_postinstall and 'DPKG_RUNNING_VERSION' in os.environ and not options.post_install:
- ret = os.spawnlp(os.P_WAIT, 'dpkg-trigger', 'dpkg-trigger', '--no-await', 'pysupport')
- if ret:
- sys.stderr.write("ERROR: dpkg-trigger failed\n")
- sys.exit(1)
- need_postinstall = []
-
- if options.post_install:
- # Now the trigger is activated, do it for all installed versions
- need_postinstall = py_installed
- if need_postinstall:
- need_dotpath = False
- for py in need_postinstall:
- post_change_stuff(py)
-
- if need_dotpath:
- for py in need_postinstall:
- create_dotpath (py)
-