diff options
Diffstat (limited to 'jython-tosca-parser/src/main/resources/Lib/site-packages/pip/_vendor/distlib/_backport/shutil.py')
| -rw-r--r-- | jython-tosca-parser/src/main/resources/Lib/site-packages/pip/_vendor/distlib/_backport/shutil.py | 761 |
1 files changed, 0 insertions, 761 deletions
diff --git a/jython-tosca-parser/src/main/resources/Lib/site-packages/pip/_vendor/distlib/_backport/shutil.py b/jython-tosca-parser/src/main/resources/Lib/site-packages/pip/_vendor/distlib/_backport/shutil.py deleted file mode 100644 index 9e2e234..0000000 --- a/jython-tosca-parser/src/main/resources/Lib/site-packages/pip/_vendor/distlib/_backport/shutil.py +++ /dev/null @@ -1,761 +0,0 @@ -# -*- coding: utf-8 -*- -# -# Copyright (C) 2012 The Python Software Foundation. -# See LICENSE.txt and CONTRIBUTORS.txt. -# -"""Utility functions for copying and archiving files and directory trees. - -XXX The functions here don't copy the resource fork or other metadata on Mac. - -""" - -import os -import sys -import stat -from os.path import abspath -import fnmatch -import collections -import errno -from . import tarfile - -try: - import bz2 - _BZ2_SUPPORTED = True -except ImportError: - _BZ2_SUPPORTED = False - -try: - from pwd import getpwnam -except ImportError: - getpwnam = None - -try: - from grp import getgrnam -except ImportError: - getgrnam = None - -__all__ = ["copyfileobj", "copyfile", "copymode", "copystat", "copy", "copy2", - "copytree", "move", "rmtree", "Error", "SpecialFileError", - "ExecError", "make_archive", "get_archive_formats", - "register_archive_format", "unregister_archive_format", - "get_unpack_formats", "register_unpack_format", - "unregister_unpack_format", "unpack_archive", "ignore_patterns"] - -class Error(EnvironmentError): - pass - -class SpecialFileError(EnvironmentError): - """Raised when trying to do a kind of operation (e.g. copying) which is - not supported on a special file (e.g. a named pipe)""" - -class ExecError(EnvironmentError): - """Raised when a command could not be executed""" - -class ReadError(EnvironmentError): - """Raised when an archive cannot be read""" - -class RegistryError(Exception): - """Raised when a registery operation with the archiving - and unpacking registeries fails""" - - -try: - WindowsError -except NameError: - WindowsError = None - -def copyfileobj(fsrc, fdst, length=16*1024): - """copy data from file-like object fsrc to file-like object fdst""" - while 1: - buf = fsrc.read(length) - if not buf: - break - fdst.write(buf) - -def _samefile(src, dst): - # Macintosh, Unix. - if hasattr(os.path, 'samefile'): - try: - return os.path.samefile(src, dst) - except OSError: - return False - - # All other platforms: check for same pathname. - return (os.path.normcase(os.path.abspath(src)) == - os.path.normcase(os.path.abspath(dst))) - -def copyfile(src, dst): - """Copy data from src to dst""" - if _samefile(src, dst): - raise Error("`%s` and `%s` are the same file" % (src, dst)) - - for fn in [src, dst]: - try: - st = os.stat(fn) - except OSError: - # File most likely does not exist - pass - else: - # XXX What about other special files? (sockets, devices...) - if stat.S_ISFIFO(st.st_mode): - raise SpecialFileError("`%s` is a named pipe" % fn) - - with open(src, 'rb') as fsrc: - with open(dst, 'wb') as fdst: - copyfileobj(fsrc, fdst) - -def copymode(src, dst): - """Copy mode bits from src to dst""" - if hasattr(os, 'chmod'): - st = os.stat(src) - mode = stat.S_IMODE(st.st_mode) - os.chmod(dst, mode) - -def copystat(src, dst): - """Copy all stat info (mode bits, atime, mtime, flags) from src to dst""" - st = os.stat(src) - mode = stat.S_IMODE(st.st_mode) - if hasattr(os, 'utime'): - os.utime(dst, (st.st_atime, st.st_mtime)) - if hasattr(os, 'chmod'): - os.chmod(dst, mode) - if hasattr(os, 'chflags') and hasattr(st, 'st_flags'): - try: - os.chflags(dst, st.st_flags) - except OSError as why: - if (not hasattr(errno, 'EOPNOTSUPP') or - why.errno != errno.EOPNOTSUPP): - raise - -def copy(src, dst): - """Copy data and mode bits ("cp src dst"). - - The destination may be a directory. - - """ - if os.path.isdir(dst): - dst = os.path.join(dst, os.path.basename(src)) - copyfile(src, dst) - copymode(src, dst) - -def copy2(src, dst): - """Copy data and all stat info ("cp -p src dst"). - - The destination may be a directory. - - """ - if os.path.isdir(dst): - dst = os.path.join(dst, os.path.basename(src)) - copyfile(src, dst) - copystat(src, dst) - -def ignore_patterns(*patterns): - """Function that can be used as copytree() ignore parameter. - - Patterns is a sequence of glob-style patterns - that are used to exclude files""" - def _ignore_patterns(path, names): - ignored_names = [] - for pattern in patterns: - ignored_names.extend(fnmatch.filter(names, pattern)) - return set(ignored_names) - return _ignore_patterns - -def copytree(src, dst, symlinks=False, ignore=None, copy_function=copy2, - ignore_dangling_symlinks=False): - """Recursively copy a directory tree. - - The destination directory must not already exist. - If exception(s) occur, an Error is raised with a list of reasons. - - If the optional symlinks flag is true, symbolic links in the - source tree result in symbolic links in the destination tree; if - it is false, the contents of the files pointed to by symbolic - links are copied. If the file pointed by the symlink doesn't - exist, an exception will be added in the list of errors raised in - an Error exception at the end of the copy process. - - You can set the optional ignore_dangling_symlinks flag to true if you - want to silence this exception. Notice that this has no effect on - platforms that don't support os.symlink. - - The optional ignore argument is a callable. If given, it - is called with the `src` parameter, which is the directory - being visited by copytree(), and `names` which is the list of - `src` contents, as returned by os.listdir(): - - callable(src, names) -> ignored_names - - Since copytree() is called recursively, the callable will be - called once for each directory that is copied. It returns a - list of names relative to the `src` directory that should - not be copied. - - The optional copy_function argument is a callable that will be used - to copy each file. It will be called with the source path and the - destination path as arguments. By default, copy2() is used, but any - function that supports the same signature (like copy()) can be used. - - """ - names = os.listdir(src) - if ignore is not None: - ignored_names = ignore(src, names) - else: - ignored_names = set() - - os.makedirs(dst) - errors = [] - for name in names: - if name in ignored_names: - continue - srcname = os.path.join(src, name) - dstname = os.path.join(dst, name) - try: - if os.path.islink(srcname): - linkto = os.readlink(srcname) - if symlinks: - os.symlink(linkto, dstname) - else: - # ignore dangling symlink if the flag is on - if not os.path.exists(linkto) and ignore_dangling_symlinks: - continue - # otherwise let the copy occurs. copy2 will raise an error - copy_function(srcname, dstname) - elif os.path.isdir(srcname): - copytree(srcname, dstname, symlinks, ignore, copy_function) - else: - # Will raise a SpecialFileError for unsupported file types - copy_function(srcname, dstname) - # catch the Error from the recursive copytree so that we can - # continue with other files - except Error as err: - errors.extend(err.args[0]) - except EnvironmentError as why: - errors.append((srcname, dstname, str(why))) - try: - copystat(src, dst) - except OSError as why: - if WindowsError is not None and isinstance(why, WindowsError): - # Copying file access times may fail on Windows - pass - else: - errors.extend((src, dst, str(why))) - if errors: - raise Error(errors) - -def rmtree(path, ignore_errors=False, onerror=None): - """Recursively delete a directory tree. - - If ignore_errors is set, errors are ignored; otherwise, if onerror - is set, it is called to handle the error with arguments (func, - path, exc_info) where func is os.listdir, os.remove, or os.rmdir; - path is the argument to that function that caused it to fail; and - exc_info is a tuple returned by sys.exc_info(). If ignore_errors - is false and onerror is None, an exception is raised. - - """ - if ignore_errors: - def onerror(*args): - pass - elif onerror is None: - def onerror(*args): - raise - try: - if os.path.islink(path): - # symlinks to directories are forbidden, see bug #1669 - raise OSError("Cannot call rmtree on a symbolic link") - except OSError: - onerror(os.path.islink, path, sys.exc_info()) - # can't continue even if onerror hook returns - return - names = [] - try: - names = os.listdir(path) - except os.error: - onerror(os.listdir, path, sys.exc_info()) - for name in names: - fullname = os.path.join(path, name) - try: - mode = os.lstat(fullname).st_mode - except os.error: - mode = 0 - if stat.S_ISDIR(mode): - rmtree(fullname, ignore_errors, onerror) - else: - try: - os.remove(fullname) - except os.error: - onerror(os.remove, fullname, sys.exc_info()) - try: - os.rmdir(path) - except os.error: - onerror(os.rmdir, path, sys.exc_info()) - - -def _basename(path): - # A basename() variant which first strips the trailing slash, if present. - # Thus we always get the last component of the path, even for directories. - return os.path.basename(path.rstrip(os.path.sep)) - -def move(src, dst): - """Recursively move a file or directory to another location. This is - similar to the Unix "mv" command. - - If the destination is a directory or a symlink to a directory, the source - is moved inside the directory. The destination path must not already - exist. - - If the destination already exists but is not a directory, it may be - overwritten depending on os.rename() semantics. - - If the destination is on our current filesystem, then rename() is used. - Otherwise, src is copied to the destination and then removed. - A lot more could be done here... A look at a mv.c shows a lot of - the issues this implementation glosses over. - - """ - real_dst = dst - if os.path.isdir(dst): - if _samefile(src, dst): - # We might be on a case insensitive filesystem, - # perform the rename anyway. - os.rename(src, dst) - return - - real_dst = os.path.join(dst, _basename(src)) - if os.path.exists(real_dst): - raise Error("Destination path '%s' already exists" % real_dst) - try: - os.rename(src, real_dst) - except OSError: - if os.path.isdir(src): - if _destinsrc(src, dst): - raise Error("Cannot move a directory '%s' into itself '%s'." % (src, dst)) - copytree(src, real_dst, symlinks=True) - rmtree(src) - else: - copy2(src, real_dst) - os.unlink(src) - -def _destinsrc(src, dst): - src = abspath(src) - dst = abspath(dst) - if not src.endswith(os.path.sep): - src += os.path.sep - if not dst.endswith(os.path.sep): - dst += os.path.sep - return dst.startswith(src) - -def _get_gid(name): - """Returns a gid, given a group name.""" - if getgrnam is None or name is None: - return None - try: - result = getgrnam(name) - except KeyError: - result = None - if result is not None: - return result[2] - return None - -def _get_uid(name): - """Returns an uid, given a user name.""" - if getpwnam is None or name is None: - return None - try: - result = getpwnam(name) - except KeyError: - result = None - if result is not None: - return result[2] - return None - -def _make_tarball(base_name, base_dir, compress="gzip", verbose=0, dry_run=0, - owner=None, group=None, logger=None): - """Create a (possibly compressed) tar file from all the files under - 'base_dir'. - - 'compress' must be "gzip" (the default), "bzip2", or None. - - 'owner' and 'group' can be used to define an owner and a group for the - archive that is being built. If not provided, the current owner and group - will be used. - - The output tar file will be named 'base_name' + ".tar", possibly plus - the appropriate compression extension (".gz", or ".bz2"). - - Returns the output filename. - """ - tar_compression = {'gzip': 'gz', None: ''} - compress_ext = {'gzip': '.gz'} - - if _BZ2_SUPPORTED: - tar_compression['bzip2'] = 'bz2' - compress_ext['bzip2'] = '.bz2' - - # flags for compression program, each element of list will be an argument - if compress is not None and compress not in compress_ext: - raise ValueError("bad value for 'compress', or compression format not " - "supported : {0}".format(compress)) - - archive_name = base_name + '.tar' + compress_ext.get(compress, '') - archive_dir = os.path.dirname(archive_name) - - if not os.path.exists(archive_dir): - if logger is not None: - logger.info("creating %s", archive_dir) - if not dry_run: - os.makedirs(archive_dir) - - # creating the tarball - if logger is not None: - logger.info('Creating tar archive') - - uid = _get_uid(owner) - gid = _get_gid(group) - - def _set_uid_gid(tarinfo): - if gid is not None: - tarinfo.gid = gid - tarinfo.gname = group - if uid is not None: - tarinfo.uid = uid - tarinfo.uname = owner - return tarinfo - - if not dry_run: - tar = tarfile.open(archive_name, 'w|%s' % tar_compression[compress]) - try: - tar.add(base_dir, filter=_set_uid_gid) - finally: - tar.close() - - return archive_name - -def _call_external_zip(base_dir, zip_filename, verbose=False, dry_run=False): - # XXX see if we want to keep an external call here - if verbose: - zipoptions = "-r" - else: - zipoptions = "-rq" - from distutils.errors import DistutilsExecError - from distutils.spawn import spawn - try: - spawn(["zip", zipoptions, zip_filename, base_dir], dry_run=dry_run) - except DistutilsExecError: - # XXX really should distinguish between "couldn't find - # external 'zip' command" and "zip failed". - raise ExecError("unable to create zip file '%s': " - "could neither import the 'zipfile' module nor " - "find a standalone zip utility") % zip_filename - -def _make_zipfile(base_name, base_dir, verbose=0, dry_run=0, logger=None): - """Create a zip file from all the files under 'base_dir'. - - The output zip file will be named 'base_name' + ".zip". Uses either the - "zipfile" Python module (if available) or the InfoZIP "zip" utility - (if installed and found on the default search path). If neither tool is - available, raises ExecError. Returns the name of the output zip - file. - """ - zip_filename = base_name + ".zip" - archive_dir = os.path.dirname(base_name) - - if not os.path.exists(archive_dir): - if logger is not None: - logger.info("creating %s", archive_dir) - if not dry_run: - os.makedirs(archive_dir) - - # If zipfile module is not available, try spawning an external 'zip' - # command. - try: - import zipfile - except ImportError: - zipfile = None - - if zipfile is None: - _call_external_zip(base_dir, zip_filename, verbose, dry_run) - else: - if logger is not None: - logger.info("creating '%s' and adding '%s' to it", - zip_filename, base_dir) - - if not dry_run: - zip = zipfile.ZipFile(zip_filename, "w", - compression=zipfile.ZIP_DEFLATED) - - for dirpath, dirnames, filenames in os.walk(base_dir): - for name in filenames: - path = os.path.normpath(os.path.join(dirpath, name)) - if os.path.isfile(path): - zip.write(path, path) - if logger is not None: - logger.info("adding '%s'", path) - zip.close() - - return zip_filename - -_ARCHIVE_FORMATS = { - 'gztar': (_make_tarball, [('compress', 'gzip')], "gzip'ed tar-file"), - 'bztar': (_make_tarball, [('compress', 'bzip2')], "bzip2'ed tar-file"), - 'tar': (_make_tarball, [('compress', None)], "uncompressed tar file"), - 'zip': (_make_zipfile, [], "ZIP file"), - } - -if _BZ2_SUPPORTED: - _ARCHIVE_FORMATS['bztar'] = (_make_tarball, [('compress', 'bzip2')], - "bzip2'ed tar-file") - -def get_archive_formats(): - """Returns a list of supported formats for archiving and unarchiving. - - Each element of the returned sequence is a tuple (name, description) - """ - formats = [(name, registry[2]) for name, registry in - _ARCHIVE_FORMATS.items()] - formats.sort() - return formats - -def register_archive_format(name, function, extra_args=None, description=''): - """Registers an archive format. - - name is the name of the format. function is the callable that will be - used to create archives. If provided, extra_args is a sequence of - (name, value) tuples that will be passed as arguments to the callable. - description can be provided to describe the format, and will be returned - by the get_archive_formats() function. - """ - if extra_args is None: - extra_args = [] - if not isinstance(function, collections.Callable): - raise TypeError('The %s object is not callable' % function) - if not isinstance(extra_args, (tuple, list)): - raise TypeError('extra_args needs to be a sequence') - for element in extra_args: - if not isinstance(element, (tuple, list)) or len(element) !=2: - raise TypeError('extra_args elements are : (arg_name, value)') - - _ARCHIVE_FORMATS[name] = (function, extra_args, description) - -def unregister_archive_format(name): - del _ARCHIVE_FORMATS[name] - -def make_archive(base_name, format, root_dir=None, base_dir=None, verbose=0, - dry_run=0, owner=None, group=None, logger=None): - """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", "bztar" - 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. - - 'owner' and 'group' are used when creating a tar archive. By default, - uses the current owner and group. - """ - save_cwd = os.getcwd() - if root_dir is not None: - if logger is not None: - logger.debug("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 = {'dry_run': dry_run, 'logger': logger} - - 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 - - if format != 'zip': - kwargs['owner'] = owner - kwargs['group'] = group - - try: - filename = func(base_name, base_dir, **kwargs) - finally: - if root_dir is not None: - if logger is not None: - logger.debug("changing back to '%s'", save_cwd) - os.chdir(save_cwd) - - return filename - - -def get_unpack_formats(): - """Returns a list of supported formats for unpacking. - - Each element of the returned sequence is a tuple - (name, extensions, description) - """ - formats = [(name, info[0], info[3]) for name, info in - _UNPACK_FORMATS.items()] - formats.sort() - return formats - -def _check_unpack_options(extensions, function, extra_args): - """Checks what gets registered as an unpacker.""" - # first make sure no other unpacker is registered for this extension - existing_extensions = {} - for name, info in _UNPACK_FORMATS.items(): - for ext in info[0]: - existing_extensions[ext] = name - - for extension in extensions: - if extension in existing_extensions: - msg = '%s is already registered for "%s"' - raise RegistryError(msg % (extension, - existing_extensions[extension])) - - if not isinstance(function, collections.Callable): - raise TypeError('The registered function must be a callable') - - -def register_unpack_format(name, extensions, function, extra_args=None, - description=''): - """Registers an unpack format. - - `name` is the name of the format. `extensions` is a list of extensions - corresponding to the format. - - `function` is the callable that will be - used to unpack archives. The callable will receive archives to unpack. - If it's unable to handle an archive, it needs to raise a ReadError - exception. - - If provided, `extra_args` is a sequence of - (name, value) tuples that will be passed as arguments to the callable. - description can be provided to describe the format, and will be returned - by the get_unpack_formats() function. - """ - if extra_args is None: - extra_args = [] - _check_unpack_options(extensions, function, extra_args) - _UNPACK_FORMATS[name] = extensions, function, extra_args, description - -def unregister_unpack_format(name): - """Removes the pack format from the registery.""" - del _UNPACK_FORMATS[name] - -def _ensure_directory(path): - """Ensure that the parent directory of `path` exists""" - dirname = os.path.dirname(path) - if not os.path.isdir(dirname): - os.makedirs(dirname) - -def _unpack_zipfile(filename, extract_dir): - """Unpack zip `filename` to `extract_dir` - """ - try: - import zipfile - except ImportError: - raise ReadError('zlib not supported, cannot unpack this archive.') - - if not zipfile.is_zipfile(filename): - raise ReadError("%s is not a zip file" % filename) - - zip = zipfile.ZipFile(filename) - try: - for info in zip.infolist(): - name = info.filename - - # don't extract absolute paths or ones with .. in them - if name.startswith('/') or '..' in name: - continue - - target = os.path.join(extract_dir, *name.split('/')) - if not target: - continue - - _ensure_directory(target) - if not name.endswith('/'): - # file - data = zip.read(info.filename) - f = open(target, 'wb') - try: - f.write(data) - finally: - f.close() - del data - finally: - zip.close() - -def _unpack_tarfile(filename, extract_dir): - """Unpack tar/tar.gz/tar.bz2 `filename` to `extract_dir` - """ - try: - tarobj = tarfile.open(filename) - except tarfile.TarError: - raise ReadError( - "%s is not a compressed or uncompressed tar file" % filename) - try: - tarobj.extractall(extract_dir) - finally: - tarobj.close() - -_UNPACK_FORMATS = { - 'gztar': (['.tar.gz', '.tgz'], _unpack_tarfile, [], "gzip'ed tar-file"), - 'tar': (['.tar'], _unpack_tarfile, [], "uncompressed tar file"), - 'zip': (['.zip'], _unpack_zipfile, [], "ZIP file") - } - -if _BZ2_SUPPORTED: - _UNPACK_FORMATS['bztar'] = (['.bz2'], _unpack_tarfile, [], - "bzip2'ed tar-file") - -def _find_unpack_format(filename): - for name, info in _UNPACK_FORMATS.items(): - for extension in info[0]: - if filename.endswith(extension): - return name - return None - -def unpack_archive(filename, extract_dir=None, format=None): - """Unpack an archive. - - `filename` is the name of the archive. - - `extract_dir` is the name of the target directory, where the archive - is unpacked. If not provided, the current working directory is used. - - `format` is the archive format: one of "zip", "tar", or "gztar". Or any - other registered format. If not provided, unpack_archive will use the - filename extension and see if an unpacker was registered for that - extension. - - In case none is found, a ValueError is raised. - """ - if extract_dir is None: - extract_dir = os.getcwd() - - if format is not None: - try: - format_info = _UNPACK_FORMATS[format] - except KeyError: - raise ValueError("Unknown unpack format '{0}'".format(format)) - - func = format_info[1] - func(filename, extract_dir, **dict(format_info[2])) - else: - # we need to look at the registered unpackers supported extensions - format = _find_unpack_format(filename) - if format is None: - raise ReadError("Unknown archive format '{0}'".format(filename)) - - func = _UNPACK_FORMATS[format][1] - kwargs = dict(_UNPACK_FORMATS[format][2]) - func(filename, extract_dir, **kwargs) |