16
16
# along with this program; if not, write to the Free Software
17
17
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19
from shutil import copyfile
20
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)
19
22
from cStringIO import StringIO
21
from ntpath import (abspath as _nt_abspath,
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normpath as _nt_normpath,
24
realpath as _nt_realpath,
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splitdrive as _nt_splitdrive,
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from os import listdir
33
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,
46
BzrBadParameterNotUnicode,
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from bzrlib.symbol_versioning import (deprecated_function,
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from bzrlib.config import config_dir, _get_user_id
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from bzrlib.errors import BzrError
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from bzrlib.trace import mutter
56
# 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
60
# OR with 0 on those platforms
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O_BINARY = getattr(os, 'O_BINARY', 0)
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37
def make_readonly(filename):
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38
"""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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90
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 getattr(os, 'lstat') is not None:
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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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:param old: The old path, to rename from
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:param new: The new path, to rename to
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:param rename_func: The potentially non-atomic rename function
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:param unlink_func: A way to delete the target file if the full rename succeeds
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# sftp rename doesn't allow overwriting, so play tricks:
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base = os.path.basename(new)
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dirname = os.path.dirname(new)
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tmp_name = u'tmp.%s.%.9f.%d.%s' % (base, time.time(), os.getpid(), rand_chars(10))
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tmp_name = pathjoin(dirname, tmp_name)
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# Rename the file out of the way, but keep track if it didn't exist
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# We don't want to grab just any exception
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# something like EACCES should prevent us from continuing
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# The downside is that the rename_func has to throw an exception
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# with an errno = ENOENT, or NoSuchFile
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rename_func(new, tmp_name)
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except (NoSuchFile,), e:
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# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
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# function raises an IOError with errno is None when a rename fails.
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# This then gets caught here.
195
if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
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if (getattr(e, 'errno', None) is None
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or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
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# This may throw an exception, in which case success will
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rename_func(old, new)
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# If the file used to exist, rename it back into place
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# otherwise just delete it from the tmp location
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unlink_func(tmp_name)
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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
221
# choke on a Unicode string containing a relative path if
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# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
224
_fs_enc = sys.getfilesystemencoding()
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def _posix_abspath(path):
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# jam 20060426 rather than encoding to fsencoding
227
# copy posixpath.abspath, but use os.getcwdu instead
228
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.
240
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):
251
# Real _nt_abspath doesn't have a problem with a unicode cwd
252
return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
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def _win32_realpath(path):
256
# Real _nt_realpath doesn't have a problem with a unicode cwd
257
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
260
def _win32_pathjoin(*args):
261
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('\\', '/'))
276
def _win32_rename(old, new):
277
"""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,
283
fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
285
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
288
# if the old path doesn't exist, sometimes we get EACCES
289
# On Linux, we seem to get EBUSY, on Mac we get EINVAL
295
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.
300
abspath = _posix_abspath
301
realpath = _posix_realpath
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pathjoin = os.path.join
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normpath = os.path.normpath
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mkdtemp = tempfile.mkdtemp
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dirname = os.path.dirname
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basename = os.path.basename
309
rmtree = shutil.rmtree
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MIN_ABS_PATHLENGTH = 1
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if sys.platform == 'win32':
315
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]
327
Helps to remove files and dirs marked as read-only.
329
type_, value = excinfo[:2]
330
if function in (os.remove, os.rmdir) \
331
and type_ == OSError \
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and value.errno == errno.EACCES:
333
bzrlib.osutils.make_writable(path)
338
def rmtree(path, ignore_errors=False, onerror=_win32_delete_readonly):
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"""Replacer for shutil.rmtree: could remove readonly dirs/files"""
340
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.
351
The problem is that on Windows, locale.getpreferredencoding()
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is not the same encoding as that used by the console:
353
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
358
output_encoding = getattr(sys.stdout, 'encoding', None)
359
if not output_encoding:
360
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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if hasattr(os, 'lstat'):
107
if e.errno == errno.ENOENT:
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raise BzrError("lstat/stat of (%r): %r" % (f, e))
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def normalizepath(f):
373
if getattr(os.path, 'realpath', None) is not None:
113
if hasattr(os.path, 'realpath'):
377
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[p,e] = os.path.split(f)
378
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if e == "" or e == "." or e == "..":
381
return pathjoin(F(p), e)
121
return os.path.join(F(p), e)
384
124
def backup_file(fn):
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125
"""Copy a file to a backup.
715
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copyfile(src, dest)
717
def delete_any(full_path):
718
"""Delete a file or directory."""
722
# We may be renaming a dangling inventory id
723
if e.errno not in (errno.EISDIR, errno.EACCES, errno.EPERM):
728
422
def has_symlinks():
729
if getattr(os, 'symlink', None) is not None:
423
if hasattr(os, 'symlink'):
735
def contains_whitespace(s):
736
"""True if there are any whitespace characters in s."""
737
for ch in string.whitespace:
744
def contains_linebreaks(s):
745
"""True if there is any vertical whitespace in s."""
753
def relpath(base, path):
754
"""Return path relative to base, or raise exception.
756
The path may be either an absolute path or a path relative to the
757
current working directory.
759
os.path.commonprefix (python2.4) has a bad bug that it works just
760
on string prefixes, assuming that '/u' is a prefix of '/u2'. This
764
assert len(base) >= MIN_ABS_PATHLENGTH, ('Length of base must be equal or'
765
' exceed the platform minimum length (which is %d)' %
772
while len(head) >= len(base):
775
head, tail = os.path.split(head)
779
raise PathNotChild(rp, base)
787
def safe_unicode(unicode_or_utf8_string):
788
"""Coerce unicode_or_utf8_string into unicode.
790
If it is unicode, it is returned.
791
Otherwise it is decoded from utf-8. If a decoding error
792
occurs, it is wrapped as a If the decoding fails, the exception is wrapped
793
as a BzrBadParameter exception.
795
if isinstance(unicode_or_utf8_string, unicode):
796
return unicode_or_utf8_string
798
return unicode_or_utf8_string.decode('utf8')
799
except UnicodeDecodeError:
800
raise BzrBadParameterNotUnicode(unicode_or_utf8_string)
803
_platform_normalizes_filenames = False
804
if sys.platform == 'darwin':
805
_platform_normalizes_filenames = True
808
def normalizes_filenames():
809
"""Return True if this platform normalizes unicode filenames.
811
Mac OSX does, Windows/Linux do not.
813
return _platform_normalizes_filenames
816
def _accessible_normalized_filename(path):
817
"""Get the unicode normalized path, and if you can access the file.
819
On platforms where the system normalizes filenames (Mac OSX),
820
you can access a file by any path which will normalize correctly.
821
On platforms where the system does not normalize filenames
822
(Windows, Linux), you have to access a file by its exact path.
824
Internally, bzr only supports NFC/NFKC normalization, since that is
825
the standard for XML documents.
827
So return the normalized path, and a flag indicating if the file
828
can be accessed by that path.
831
return unicodedata.normalize('NFKC', unicode(path)), True
834
def _inaccessible_normalized_filename(path):
835
__doc__ = _accessible_normalized_filename.__doc__
837
normalized = unicodedata.normalize('NFKC', unicode(path))
838
return normalized, normalized == path
841
if _platform_normalizes_filenames:
842
normalized_filename = _accessible_normalized_filename
844
normalized_filename = _inaccessible_normalized_filename
847
def terminal_width():
848
"""Return estimated terminal width."""
849
if sys.platform == 'win32':
850
import bzrlib.win32console
851
return bzrlib.win32console.get_console_size()[0]
854
import struct, fcntl, termios
855
s = struct.pack('HHHH', 0, 0, 0, 0)
856
x = fcntl.ioctl(1, termios.TIOCGWINSZ, s)
857
width = struct.unpack('HHHH', x)[1]
862
width = int(os.environ['COLUMNS'])
871
def supports_executable():
872
return sys.platform != "win32"
875
def set_or_unset_env(env_variable, value):
876
"""Modify the environment, setting or removing the env_variable.
878
:param env_variable: The environment variable in question
879
:param value: The value to set the environment to. If None, then
880
the variable will be removed.
881
:return: The original value of the environment variable.
883
orig_val = os.environ.get(env_variable)
885
if orig_val is not None:
886
del os.environ[env_variable]
888
if isinstance(value, unicode):
889
value = value.encode(bzrlib.user_encoding)
890
os.environ[env_variable] = value
894
_validWin32PathRE = re.compile(r'^([A-Za-z]:[/\\])?[^:<>*"?\|]*$')
897
def check_legal_path(path):
898
"""Check whether the supplied path is legal.
899
This is only required on Windows, so we don't test on other platforms
902
if sys.platform != "win32":
904
if _validWin32PathRE.match(path) is None:
905
raise IllegalPath(path)
908
def walkdirs(top, prefix=""):
909
"""Yield data about all the directories in a tree.
911
This yields all the data about the contents of a directory at a time.
912
After each directory has been yielded, if the caller has mutated the list
913
to exclude some directories, they are then not descended into.
915
The data yielded is of the form:
916
((directory-relpath, directory-path-from-top),
917
[(relpath, basename, kind, lstat), ...]),
918
- directory-relpath is the relative path of the directory being returned
919
with respect to top. prefix is prepended to this.
920
- directory-path-from-root is the path including top for this directory.
921
It is suitable for use with os functions.
922
- relpath is the relative path within the subtree being walked.
923
- basename is the basename of the path
924
- kind is the kind of the file now. If unknown then the file is not
925
present within the tree - but it may be recorded as versioned. See
927
- lstat is the stat data *if* the file was statted.
928
- planned, not implemented:
929
path_from_tree_root is the path from the root of the tree.
931
:param prefix: Prefix the relpaths that are yielded with 'prefix'. This
932
allows one to walk a subtree but get paths that are relative to a tree
934
:return: an iterator over the dirs.
936
#TODO there is a bit of a smell where the results of the directory-
937
# summary in this, and the path from the root, may not agree
938
# depending on top and prefix - i.e. ./foo and foo as a pair leads to
939
# potentially confusing output. We should make this more robust - but
940
# not at a speed cost. RBC 20060731
943
_directory = _directory_kind
945
pending = [(prefix, "", _directory, None, top)]
948
currentdir = pending.pop()
949
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
952
relroot = currentdir[0] + '/'
955
for name in sorted(_listdir(top)):
956
abspath = top + '/' + name
957
statvalue = lstat(abspath)
958
dirblock.append((relroot + name, name,
959
file_kind_from_stat_mode(statvalue.st_mode),
961
yield (currentdir[0], top), dirblock
962
# push the user specified dirs from dirblock
963
for dir in reversed(dirblock):
964
if dir[2] == _directory:
968
def copy_tree(from_path, to_path, handlers={}):
969
"""Copy all of the entries in from_path into to_path.
971
:param from_path: The base directory to copy.
972
:param to_path: The target directory. If it does not exist, it will
974
:param handlers: A dictionary of functions, which takes a source and
975
destinations for files, directories, etc.
976
It is keyed on the file kind, such as 'directory', 'symlink', or 'file'
977
'file', 'directory', and 'symlink' should always exist.
978
If they are missing, they will be replaced with 'os.mkdir()',
979
'os.readlink() + os.symlink()', and 'shutil.copy2()', respectively.
981
# Now, just copy the existing cached tree to the new location
982
# We use a cheap trick here.
983
# Absolute paths are prefixed with the first parameter
984
# relative paths are prefixed with the second.
985
# So we can get both the source and target returned
986
# without any extra work.
988
def copy_dir(source, dest):
991
def copy_link(source, dest):
992
"""Copy the contents of a symlink"""
993
link_to = os.readlink(source)
994
os.symlink(link_to, dest)
996
real_handlers = {'file':shutil.copy2,
998
'directory':copy_dir,
1000
real_handlers.update(handlers)
1002
if not os.path.exists(to_path):
1003
real_handlers['directory'](from_path, to_path)
1005
for dir_info, entries in walkdirs(from_path, prefix=to_path):
1006
for relpath, name, kind, st, abspath in entries:
1007
real_handlers[kind](abspath, relpath)
1010
def path_prefix_key(path):
1011
"""Generate a prefix-order path key for path.
1013
This can be used to sort paths in the same way that walkdirs does.
1015
return (dirname(path) , path)
1018
def compare_paths_prefix_order(path_a, path_b):
1019
"""Compare path_a and path_b to generate the same order walkdirs uses."""
1020
key_a = path_prefix_key(path_a)
1021
key_b = path_prefix_key(path_b)
1022
return cmp(key_a, key_b)
1025
_cached_user_encoding = None
1028
def get_user_encoding():
1029
"""Find out what the preferred user encoding is.
1031
This is generally the encoding that is used for command line parameters
1032
and file contents. This may be different from the terminal encoding
1033
or the filesystem encoding.
1035
:return: A string defining the preferred user encoding
1037
global _cached_user_encoding
1038
if _cached_user_encoding is not None:
1039
return _cached_user_encoding
1041
if sys.platform == 'darwin':
1042
# work around egregious python 2.4 bug
1043
sys.platform = 'posix'
1047
sys.platform = 'darwin'
1052
_cached_user_encoding = locale.getpreferredencoding()
1053
except locale.Error, e:
1054
sys.stderr.write('bzr: warning: %s\n'
1055
' Could not determine what text encoding to use.\n'
1056
' This error usually means your Python interpreter\n'
1057
' doesn\'t support the locale set by $LANG (%s)\n'
1058
" Continuing with ascii encoding.\n"
1059
% (e, os.environ.get('LANG')))
1061
if _cached_user_encoding is None:
1062
_cached_user_encoding = 'ascii'
1063
return _cached_user_encoding
added
removed
bzrlib/osutils.py
