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- """distutils.archive_util
-
- Utility functions for creating archive files (tarballs, zip files,
- that sort of thing)."""
-
- # created 2000/04/03, Greg Ward (extracted from util.py)
-
- __revision__ = "$Id: archive_util.py,v 1.9 2000/09/26 02:13:49 gward Exp $"
-
- import os
- from distutils.errors import DistutilsExecError
- from distutils.spawn import spawn
- from distutils.dir_util import mkpath
-
- def make_tarball (base_name, base_dir, compress="gzip",
- verbose=0, dry_run=0):
- """Create a (possibly compressed) tar file from all the files under
- 'base_dir'. 'compress' must be "gzip" (the default), "compress",
- "bzip2", or None. Both "tar" and the compression utility named by
- 'compress' must be on the default program search path, so this is
- probably Unix-specific. The output tar file will be named 'base_dir' +
- ".tar", possibly plus the appropriate compression extension (".gz",
- ".bz2" or ".Z"). Return the output filename.
- """
- # XXX GNU tar 1.13 has a nifty option to add a prefix directory.
- # It's pretty new, though, so we certainly can't require it --
- # but it would be nice to take advantage of it to skip the
- # "create a tree of hardlinks" step! (Would also be nice to
- # detect GNU tar to use its 'z' option and save a step.)
-
- compress_ext = { 'gzip': ".gz",
- 'bzip2': '.bz2',
- 'compress': ".Z" }
-
- # flags for compression program, each element of list will be an argument
- compress_flags = {'gzip': ["-f9"],
- 'compress': ["-f"],
- 'bzip2': ['-f9']}
-
- if compress is not None and compress not in compress_ext.keys():
- raise ValueError, \
- "bad value for 'compress': must be None, 'gzip', or 'compress'"
-
- archive_name = base_name + ".tar"
- mkpath(os.path.dirname(archive_name), verbose=verbose, dry_run=dry_run)
- cmd = ["tar", "-cf", archive_name, base_dir]
- spawn(cmd, verbose=verbose, dry_run=dry_run)
-
- if compress:
- spawn([compress] + compress_flags[compress] + [archive_name],
- verbose=verbose, dry_run=dry_run)
- return archive_name + compress_ext[compress]
- else:
- return archive_name
-
- # make_tarball ()
-
-
- def make_zipfile (base_name, base_dir, verbose=0, dry_run=0):
- """Create a zip file from all the files under 'base_dir'. The output
- zip file will be named 'base_dir' + ".zip". Uses either the InfoZIP
- "zip" utility (if installed and found on the default search path) or
- the "zipfile" Python module (if available). If neither tool is
- available, raises DistutilsExecError. Returns the name of the output
- zip file.
- """
- # This initially assumed the Unix 'zip' utility -- but
- # apparently InfoZIP's zip.exe works the same under Windows, so
- # no changes needed!
-
- zip_filename = base_name + ".zip"
- mkpath(os.path.dirname(zip_filename), verbose=verbose, dry_run=dry_run)
- try:
- spawn(["zip", "-rq", zip_filename, base_dir],
- verbose=verbose, dry_run=dry_run)
- except DistutilsExecError:
-
- # XXX really should distinguish between "couldn't find
- # external 'zip' command" and "zip failed" -- shouldn't try
- # again in the latter case. (I think fixing this will
- # require some cooperation from the spawn module -- perhaps
- # a utility function to search the path, so we can fallback
- # on zipfile.py without the failed spawn.)
- try:
- import zipfile
- except ImportError:
- raise DistutilsExecError, \
- ("unable to create zip file '%s': " +
- "could neither find a standalone zip utility nor " +
- "import the 'zipfile' module") % zip_filename
-
- if verbose:
- print "creating '%s' and adding '%s' to it" % \
- (zip_filename, base_dir)
-
- def visit (z, dirname, names):
- for name in names:
- path = os.path.normpath(os.path.join(dirname, name))
- if os.path.isfile(path):
- z.write(path, path)
-
- if not dry_run:
- z = zipfile.ZipFile(zip_filename, "wb",
- compression=zipfile.ZIP_DEFLATED)
-
- os.path.walk(base_dir, visit, z)
- z.close()
-
- return zip_filename
-
- # make_zipfile ()
-
-
- ARCHIVE_FORMATS = {
- 'gztar': (make_tarball, [('compress', 'gzip')], "gzip'ed tar-file"),
- 'bztar': (make_tarball, [('compress', 'bzip2')], "bzip2'ed tar-file"),
- 'ztar': (make_tarball, [('compress', 'compress')], "compressed tar file"),
- 'tar': (make_tarball, [('compress', None)], "uncompressed tar file"),
- 'zip': (make_zipfile, [],"ZIP file")
- }
-
- def check_archive_formats (formats):
- for format in formats:
- if not ARCHIVE_FORMATS.has_key(format):
- return format
- else:
- return None
-
- def make_archive (base_name, format,
- root_dir=None, base_dir=None,
- verbose=0, dry_run=0):
- """Create an archive file (eg. zip or tar). 'base_name' is the name
- of the file to create, minus any format-specific extension; 'format'
- is the archive format: one of "zip", "tar", "ztar", or "gztar".
- 'root_dir' is a directory that will be the root directory of the
- archive; ie. we typically chdir into 'root_dir' before creating the
- archive. 'base_dir' is the directory where we start archiving from;
- ie. 'base_dir' will be the common prefix of all files and
- directories in the archive. 'root_dir' and 'base_dir' both default
- to the current directory. Returns the name of the archive file.
- """
- save_cwd = os.getcwd()
- if root_dir is not None:
- if verbose:
- print "changing into '%s'" % root_dir
- base_name = os.path.abspath(base_name)
- if not dry_run:
- os.chdir(root_dir)
-
- if base_dir is None:
- base_dir = os.curdir
-
- kwargs = { 'verbose': verbose,
- 'dry_run': dry_run }
-
- try:
- format_info = ARCHIVE_FORMATS[format]
- except KeyError:
- raise ValueError, "unknown archive format '%s'" % format
-
- func = format_info[0]
- for (arg,val) in format_info[1]:
- kwargs[arg] = val
- filename = apply(func, (base_name, base_dir), kwargs)
-
- if root_dir is not None:
- if verbose:
- print "changing back to '%s'" % save_cwd
- os.chdir(save_cwd)
-
- return filename
-
- # make_archive ()
-