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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from shutil import copyfile
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from stat import (S_ISREG, S_ISDIR, S_ISLNK, ST_MODE, ST_SIZE,
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S_ISCHR, S_ISBLK, S_ISFIFO, S_ISSOCK)
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from cStringIO import StringIO
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from ntpath import (abspath as _nt_abspath,
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normpath as _nt_normpath,
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realpath as _nt_realpath,
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splitdrive as _nt_splitdrive,
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from os import listdir
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from shutil import copyfile
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from stat import (S_ISREG, S_ISDIR, S_ISLNK, ST_MODE, ST_SIZE,
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S_ISCHR, S_ISBLK, S_ISFIFO, S_ISSOCK)
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from bzrlib.errors import (BzrError,
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BzrBadParameterNotUnicode,
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from bzrlib.symbol_versioning import (deprecated_function,
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from bzrlib.trace import mutter
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# On win32, O_BINARY is used to indicate the file should
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# be opened in binary mode, rather than text mode.
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# On other platforms, O_BINARY doesn't exist, because
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# they always open in binary mode, so it is okay to
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# OR with 0 on those platforms
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O_BINARY = getattr(os, 'O_BINARY', 0)
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def make_readonly(filename):
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"""Make a filename read-only."""
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mod = os.stat(filename).st_mode
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_directory_kind = 'directory'
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stat.S_IFDIR:_directory_kind,
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stat.S_IFCHR:'chardev',
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stat.S_IFBLK:'block',
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stat.S_IFLNK:'symlink',
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stat.S_IFSOCK:'socket',
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def file_kind_from_stat_mode(stat_mode, _formats=_formats, _unknown='unknown'):
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"""Generate a file kind from a stat mode. This is used in walkdirs.
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Its performance is critical: Do not mutate without careful benchmarking.
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return _formats[stat_mode & 0170000]
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def file_kind(f, _lstat=os.lstat, _mapper=file_kind_from_stat_mode):
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return _mapper(_lstat(f).st_mode)
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if getattr(e, 'errno', None) == errno.ENOENT:
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raise bzrlib.errors.NoSuchFile(f)
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"""Return the current umask"""
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# Assume that people aren't messing with the umask while running
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# XXX: This is not thread safe, but there is no way to get the
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# umask without setting it
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mode = os.lstat(f)[ST_MODE]
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def kind_marker(kind):
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if kind == 'file':
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elif kind == _directory_kind:
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elif kind == 'directory':
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elif kind == 'symlink':
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raise BzrError('invalid file kind %r' % kind)
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lexists = getattr(os.path, 'lexists', None)
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if hasattr(os, 'lstat'):
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if e.errno == errno.ENOENT:
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raise BzrError("lstat/stat of (%r): %r" % (f, e))
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if hasattr(os.path, 'lexists'):
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return os.path.lexists(f)
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if hasattr(os, 'lstat'):
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if e.errno == errno.ENOENT:
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raise BzrError("lstat/stat of (%r): %r" % (f, e))
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def fancy_rename(old, new, rename_func, unlink_func):
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"""A fancy rename, when you don't have atomic rename.
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rename_func(tmp_name, new)
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# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
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# choke on a Unicode string containing a relative path if
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# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
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_fs_enc = sys.getfilesystemencoding()
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def _posix_abspath(path):
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# jam 20060426 rather than encoding to fsencoding
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# copy posixpath.abspath, but use os.getcwdu instead
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if not posixpath.isabs(path):
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path = posixpath.join(getcwd(), path)
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return posixpath.normpath(path)
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def _posix_realpath(path):
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return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
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def _win32_fixdrive(path):
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"""Force drive letters to be consistent.
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win32 is inconsistent whether it returns lower or upper case
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and even if it was consistent the user might type the other
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so we force it to uppercase
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running python.exe under cmd.exe return capital C:\\
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running win32 python inside a cygwin shell returns lowercase c:\\
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drive, path = _nt_splitdrive(path)
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return drive.upper() + path
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def _win32_abspath(path):
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# Real _nt_abspath doesn't have a problem with a unicode cwd
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return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
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def _win32_realpath(path):
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# Real _nt_realpath doesn't have a problem with a unicode cwd
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return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
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def _win32_pathjoin(*args):
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return _nt_join(*args).replace('\\', '/')
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def _win32_normpath(path):
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return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
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return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
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def _win32_mkdtemp(*args, **kwargs):
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return _win32_fixdrive(tempfile.mkdtemp(*args, **kwargs).replace('\\', '/'))
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def _win32_rename(old, new):
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"""We expect to be able to atomically replace 'new' with old.
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On win32, if new exists, it must be moved out of the way first,
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fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
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if e.errno in (errno.EPERM, errno.EACCES, errno.EBUSY, errno.EINVAL):
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# If we try to rename a non-existant file onto cwd, we get
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# EPERM or EACCES instead of ENOENT, this will raise ENOENT
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# if the old path doesn't exist, sometimes we get EACCES
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# On Linux, we seem to get EBUSY, on Mac we get EINVAL
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return unicodedata.normalize('NFKC', os.getcwdu())
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# Default is to just use the python builtins, but these can be rebound on
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# particular platforms.
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abspath = _posix_abspath
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realpath = _posix_realpath
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# Default is to just use the python builtins
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abspath = os.path.abspath
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realpath = os.path.realpath
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pathjoin = os.path.join
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normpath = os.path.normpath
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getcwd = os.getcwdu
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rename = os.rename
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dirname = os.path.dirname
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basename = os.path.basename
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rmtree = shutil.rmtree
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MIN_ABS_PATHLENGTH = 1
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if os.name == "posix":
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# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
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# choke on a Unicode string containing a relative path if
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# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
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_fs_enc = sys.getfilesystemencoding()
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return os.path.abspath(path.encode(_fs_enc)).decode(_fs_enc)
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return os.path.realpath(path.encode(_fs_enc)).decode(_fs_enc)
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if sys.platform == 'win32':
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abspath = _win32_abspath
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realpath = _win32_realpath
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pathjoin = _win32_pathjoin
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normpath = _win32_normpath
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getcwd = _win32_getcwd
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mkdtemp = _win32_mkdtemp
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rename = _win32_rename
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MIN_ABS_PATHLENGTH = 3
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def _win32_delete_readonly(function, path, excinfo):
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"""Error handler for shutil.rmtree function [for win32]
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Helps to remove files and dirs marked as read-only.
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type_, value = excinfo[:2]
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if function in (os.remove, os.rmdir) \
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and type_ == OSError \
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and value.errno == errno.EACCES:
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bzrlib.osutils.make_writable(path)
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def rmtree(path, ignore_errors=False, onerror=_win32_delete_readonly):
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"""Replacer for shutil.rmtree: could remove readonly dirs/files"""
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return shutil.rmtree(path, ignore_errors, onerror)
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elif sys.platform == 'darwin':
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def get_terminal_encoding():
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"""Find the best encoding for printing to the screen.
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This attempts to check both sys.stdout and sys.stdin to see
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what encoding they are in, and if that fails it falls back to
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bzrlib.user_encoding.
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The problem is that on Windows, locale.getpreferredencoding()
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is not the same encoding as that used by the console:
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http://mail.python.org/pipermail/python-list/2003-May/162357.html
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On my standard US Windows XP, the preferred encoding is
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cp1252, but the console is cp437
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output_encoding = getattr(sys.stdout, 'encoding', None)
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if not output_encoding:
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input_encoding = getattr(sys.stdin, 'encoding', None)
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if not input_encoding:
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output_encoding = bzrlib.user_encoding
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mutter('encoding stdout as bzrlib.user_encoding %r', output_encoding)
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output_encoding = input_encoding
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mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
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mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
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return output_encoding
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# We need to use the Unicode-aware os.path.abspath and
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# os.path.realpath on Windows systems.
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return os.path.abspath(path).replace('\\', '/')
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return os.path.realpath(path).replace('\\', '/')
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return os.path.join(*args).replace('\\', '/')
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return os.path.normpath(path).replace('\\', '/')
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return os.getcwdu().replace('\\', '/')
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def mkdtemp(*args, **kwargs):
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return tempfile.mkdtemp(*args, **kwargs).replace('\\', '/')
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def rename(old, new):
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fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
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def normalizepath(f):
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return unicode_or_utf8_string.decode('utf8')
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except UnicodeDecodeError:
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raise BzrBadParameterNotUnicode(unicode_or_utf8_string)
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_platform_normalizes_filenames = False
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if sys.platform == 'darwin':
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_platform_normalizes_filenames = True
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def normalizes_filenames():
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"""Return True if this platform normalizes unicode filenames.
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Mac OSX does, Windows/Linux do not.
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return _platform_normalizes_filenames
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def _accessible_normalized_filename(path):
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"""Get the unicode normalized path, and if you can access the file.
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On platforms where the system normalizes filenames (Mac OSX),
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you can access a file by any path which will normalize correctly.
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On platforms where the system does not normalize filenames
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(Windows, Linux), you have to access a file by its exact path.
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Internally, bzr only supports NFC/NFKC normalization, since that is
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the standard for XML documents.
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So return the normalized path, and a flag indicating if the file
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can be accessed by that path.
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return unicodedata.normalize('NFKC', unicode(path)), True
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def _inaccessible_normalized_filename(path):
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__doc__ = _accessible_normalized_filename.__doc__
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normalized = unicodedata.normalize('NFKC', unicode(path))
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return normalized, normalized == path
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if _platform_normalizes_filenames:
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normalized_filename = _accessible_normalized_filename
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normalized_filename = _inaccessible_normalized_filename
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raise BzrBadParameter(unicode_or_utf8_string)
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def terminal_width():
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"""Return estimated terminal width."""
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if sys.platform == 'win32':
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import bzrlib.win32console
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return bzrlib.win32console.get_console_size()[0]
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# TODO: Do something smart on Windows?
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# TODO: Is there anything that gets a better update when the window
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# is resized while the program is running? We could use the Python termcap
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import struct, fcntl, termios
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s = struct.pack('HHHH', 0, 0, 0, 0)
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x = fcntl.ioctl(1, termios.TIOCGWINSZ, s)
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width = struct.unpack('HHHH', x)[1]
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width = int(os.environ['COLUMNS'])
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def supports_executable():
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return sys.platform != "win32"
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_validWin32PathRE = re.compile(r'^([A-Za-z]:[/\\])?[^:<>*"?\|]*$')
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def check_legal_path(path):
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"""Check whether the supplied path is legal.
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This is only required on Windows, so we don't test on other platforms
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if sys.platform != "win32":
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if _validWin32PathRE.match(path) is None:
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raise IllegalPath(path)
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def walkdirs(top, prefix=""):
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"""Yield data about all the directories in a tree.
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This yields all the data about the contents of a directory at a time.
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After each directory has been yielded, if the caller has mutated the list
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to exclude some directories, they are then not descended into.
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The data yielded is of the form:
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((directory-relpath, directory-path-from-top),
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[(relpath, basename, kind, lstat), ...]),
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- directory-relpath is the relative path of the directory being returned
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with respect to top. prefix is prepended to this.
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- directory-path-from-root is the path including top for this directory.
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It is suitable for use with os functions.
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- relpath is the relative path within the subtree being walked.
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- basename is the basename of the path
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- kind is the kind of the file now. If unknown then the file is not
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present within the tree - but it may be recorded as versioned. See
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- lstat is the stat data *if* the file was statted.
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- planned, not implemented:
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path_from_tree_root is the path from the root of the tree.
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:param prefix: Prefix the relpaths that are yielded with 'prefix'. This
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allows one to walk a subtree but get paths that are relative to a tree
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:return: an iterator over the dirs.
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#TODO there is a bit of a smell where the results of the directory-
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# summary in this, and the path from the root, may not agree
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# depending on top and prefix - i.e. ./foo and foo as a pair leads to
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# potentially confusing output. We should make this more robust - but
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# not at a speed cost. RBC 20060731
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_directory = _directory_kind
925
pending = [(prefix, "", _directory, None, top)]
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currentdir = pending.pop()
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# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
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relroot = currentdir[0] + '/'
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for name in sorted(_listdir(top)):
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abspath = top + '/' + name
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statvalue = lstat(abspath)
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dirblock.append((relroot + name, name,
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file_kind_from_stat_mode(statvalue.st_mode),
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yield (currentdir[0], top), dirblock
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# push the user specified dirs from dirblock
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for dir in reversed(dirblock):
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if dir[2] == _directory:
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def copy_tree(from_path, to_path, handlers={}):
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"""Copy all of the entries in from_path into to_path.
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:param from_path: The base directory to copy.
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:param to_path: The target directory. If it does not exist, it will
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:param handlers: A dictionary of functions, which takes a source and
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destinations for files, directories, etc.
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It is keyed on the file kind, such as 'directory', 'symlink', or 'file'
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'file', 'directory', and 'symlink' should always exist.
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If they are missing, they will be replaced with 'os.mkdir()',
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'os.readlink() + os.symlink()', and 'shutil.copy2()', respectively.
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# Now, just copy the existing cached tree to the new location
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# We use a cheap trick here.
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# Absolute paths are prefixed with the first parameter
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# relative paths are prefixed with the second.
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# So we can get both the source and target returned
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# without any extra work.
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def copy_dir(source, dest):
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def copy_link(source, dest):
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"""Copy the contents of a symlink"""
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link_to = os.readlink(source)
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os.symlink(link_to, dest)
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real_handlers = {'file':shutil.copy2,
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'directory':copy_dir,
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real_handlers.update(handlers)
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if not os.path.exists(to_path):
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real_handlers['directory'](from_path, to_path)
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for dir_info, entries in walkdirs(from_path, prefix=to_path):
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for relpath, name, kind, st, abspath in entries:
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real_handlers[kind](abspath, relpath)
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def path_prefix_key(path):
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"""Generate a prefix-order path key for path.
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This can be used to sort paths in the same way that walkdirs does.
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return (dirname(path) , path)
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def compare_paths_prefix_order(path_a, path_b):
999
"""Compare path_a and path_b to generate the same order walkdirs uses."""
1000
key_a = path_prefix_key(path_a)
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key_b = path_prefix_key(path_b)
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return cmp(key_a, key_b)
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return int(os.environ['COLUMNS'])
611
except (IndexError, KeyError, ValueError):
added
removed
bzrlib/osutils.py
