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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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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.errors import BzrError, NotBranchError
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from bzrlib.trace import mutter
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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_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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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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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 == None when a rename fails.
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# This then gets caught here.
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if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
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if (not hasattr(e, 'errno')
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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
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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_abspath(path):
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# Real _nt_abspath doesn't have a problem with a unicode cwd
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return _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 _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 _nt_normpath(unicode(path)).replace('\\', '/')
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return os.getcwdu().replace('\\', '/')
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def _win32_mkdtemp(*args, **kwargs):
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return tempfile.mkdtemp(*args, **kwargs).replace('\\', '/')
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def _win32_rename(old, new):
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fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
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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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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
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rmtree = shutil.rmtree
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MIN_ABS_PATHLENGTH = 1
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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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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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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 normalizepath(f):
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if hasattr(os.path, 'realpath'):
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[p,e] = os.path.split(f)
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if e == "" or e == "." or e == "..":
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return pathjoin(F(p), e)
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return os.path.join(F(p), e)
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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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# 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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abspath = os.path.abspath
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realpath = os.path.realpath
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def backup_file(fn):
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"""Copy a file to a backup.
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s.insert(0, tail)
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raise PathNotChild(rp, base)
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def safe_unicode(unicode_or_utf8_string):
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"""Coerce unicode_or_utf8_string into unicode.
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If it is unicode, it is returned.
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Otherwise it is decoded from utf-8. If a decoding error
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occurs, it is wrapped as a If the decoding fails, the exception is wrapped
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as a BzrBadParameter exception.
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if isinstance(unicode_or_utf8_string, unicode):
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return unicode_or_utf8_string
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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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if _platform_normalizes_filenames:
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def unicode_filename(path):
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"""Make sure 'path' is a properly normalized filename.
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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
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Internally, bzr only supports NFC/NFKC normalization, since
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that is the standard for XML documents.
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So we return an normalized path, and indicate this has been
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:return: (path, is_normalized) Return a path which can
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access the file, and whether or not this path is
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return unicodedata.normalize('NFKC', path), True
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def unicode_filename(path):
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"""Make sure 'path' is a properly normalized filename.
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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
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that is the standard for XML documents.
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So we return the original path, and indicate if this is
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:return: (path, is_normalized) Return a path which can
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access the file, and whether or not this path is
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return path, unicodedata.normalize('NFKC', path) == path
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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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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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[(relpath, basename, kind, lstat, path_from_top), ...]
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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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_directory = _directory_kind
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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, file_kind_from_stat_mode(statvalue.st_mode), statvalue, abspath))
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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 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):
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"""Compare path_a and path_b to generate the same order walkdirs uses."""
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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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# XXX This should raise a NotChildPath exception, as its not tied
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raise NotBranchError("path %r is not within branch %r" % (rp, base))
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return os.sep.join(s)
added
removed
bzrlib/osutils.py
