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# Bazaar-NG -- distributed version control
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# Copyright (C) 2005 by Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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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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import os, types, re, time, errno, sys
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from stat import S_ISREG, S_ISDIR, S_ISLNK, ST_MODE, ST_SIZE
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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 bzrlib.errors import BzrError
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from bzrlib.trace import mutter
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def make_readonly(filename):
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"""Make a filename read-only."""
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# TODO: probably needs to be fixed for windows
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mod = os.stat(filename).st_mode
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mod = mod & 0777555
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os.chmod(filename, mod)
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raise BzrError('invalid file kind %r' % kind)
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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 os.path.join(F(p), e)
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def backup_file(fn):
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"""Copy a file to a backup.
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The empty string as a dir name is taken as top-of-tree and matches
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>>> is_inside('src', 'src/foo.c')
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>>> is_inside('src', os.path.join('src', 'foo.c'))
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>>> is_inside('src', 'srccontrol')
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>>> is_inside('src', 'src/a/a/a/foo.c')
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>>> is_inside('src', os.path.join('src', 'a', 'a', 'a', 'foo.c'))
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>>> is_inside('foo.c', 'foo.c')
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'sha1': s.hexdigest()}
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"""Return per-user configuration directory.
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By default this is ~/.bzr.conf/
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TODO: Global option --config-dir to override this.
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return os.path.expanduser("~/.bzr.conf")
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"""Calculate automatic user identification.
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Returns (realname, email).
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Only used when none is set in the environment or the id file.
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This previously used the FQDN as the default domain, but that can
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be very slow on machines where DNS is broken. So now we simply
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# XXX: Any good way to get real user name on win32?
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w = pwd.getpwuid(uid)
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gecos = w.pw_gecos.decode(bzrlib.user_encoding)
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username = w.pw_name.decode(bzrlib.user_encoding)
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comma = gecos.find(',')
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realname = gecos[:comma]
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realname = username = getpass.getuser().decode(bzrlib.user_encoding)
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return realname, (username + '@' + socket.gethostname())
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def _get_user_id(branch):
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"""Return the full user id from a file or environment variable.
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e.g. "John Hacker <jhacker@foo.org>"
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A branch to use for a per-branch configuration, or None.
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The following are searched in order:
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2. .bzr/email for this branch.
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v = os.environ.get('BZREMAIL')
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return v.decode(bzrlib.user_encoding)
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return (branch.controlfile("email", "r")
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.decode(bzrlib.user_encoding)
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if e.errno != errno.ENOENT:
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return (open(os.path.join(config_dir(), "email"))
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.decode(bzrlib.user_encoding)
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if e.errno != errno.ENOENT:
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v = os.environ.get('EMAIL')
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return v.decode(bzrlib.user_encoding)
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def username(branch):
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"""Return email-style username.
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Something similar to 'Martin Pool <mbp@sourcefrog.net>'
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TODO: Check it's reasonably well-formed.
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v = _get_user_id(branch)
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name, email = _auto_user_id()
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return '%s <%s>' % (name, email)
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def user_email(branch):
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"""Return just the email component of a username."""
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e = _get_user_id(branch)
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m = re.search(r'[\w+.-]+@[\w+.-]+', e)
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raise BzrError("%r doesn't seem to contain a reasonable email address" % e)
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return _auto_user_id()[1]
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def compare_files(a, b):
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"""Returns true if equal in contents"""
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"""Return size of given open file."""
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return os.fstat(f.fileno())[ST_SIZE]
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if hasattr(os, 'urandom'): # python 2.4 and later
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# Define rand_bytes based on platform.
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# Python 2.4 and later have os.urandom,
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# but it doesn't work on some arches
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rand_bytes = os.urandom
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elif sys.platform == 'linux2':
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rand_bytes = file('/dev/urandom', 'rb').read
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# not well seeded, but better than nothing
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s += chr(random.randint(0, 255))
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except (NotImplementedError, AttributeError):
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# If python doesn't have os.urandom, or it doesn't work,
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# then try to first pull random data from /dev/urandom
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if os.path.exists("/dev/urandom"):
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rand_bytes = file('/dev/urandom', 'rb').read
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# Otherwise, use this hack as a last resort
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# not well seeded, but better than nothing
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s += chr(random.randint(0, 255))
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## TODO: We could later have path objects that remember their list
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## decomposition (might be too tricksy though.)
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return os.path.join(p1, p2)
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def extern_command(cmd, ignore_errors = False):
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mutter('external command: %s' % `cmd`)
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if not ignore_errors:
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raise BzrError('command failed')
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def _read_config_value(name):
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"""Read a config value from the file ~/.bzr.conf/<name>
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Return None if the file does not exist"""
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"""Split s into lines, but without removing the newline characters."""
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return StringIO(s).readlines()
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def hardlinks_good():
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return sys.platform not in ('win32', 'cygwin', 'darwin')
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def link_or_copy(src, dest):
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"""Hardlink a file, or copy it if it can't be hardlinked."""
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if not hardlinks_good():
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f = file(os.path.join(config_dir(), name), "r")
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return f.read().decode(bzrlib.user_encoding).rstrip("\r\n")
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if e.errno == errno.ENOENT:
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except (OSError, IOError), e:
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if e.errno != errno.EXDEV:
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if hasattr(os, 'symlink'):
added
removed
bzrlib/osutils.py
