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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.errors import BzrError, PathNotChild
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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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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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'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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"""Return the full user id from a file or environment variable.
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TODO: Allow taking this from a file in the branch directory too
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for per-branch ids."""
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v = os.environ.get('BZREMAIL')
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return v.decode(bzrlib.user_encoding)
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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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"""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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name, email = _auto_user_id()
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return '%s <%s>' % (name, email)
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_EMAIL_RE = re.compile(r'[\w+.-]+@[\w+.-]+')
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"""Return just the email component of a username."""
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m = _EMAIL_RE.search(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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"""Return a sequence of possible editor binaries for the current platform"""
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e = _read_config_value("editor")
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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'):
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if os.name == "windows":
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elif os.name == "posix":
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yield os.environ["EDITOR"]
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def _run_editor(filename):
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"""Try to execute an editor to edit the commit message. Returns True on success,
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for e in _get_editor():
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x = os.spawnvp(os.P_WAIT, e, (e, filename))
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def contains_whitespace(s):
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"""True if there are any whitespace characters in s."""
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for ch in string.whitespace:
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def contains_linebreaks(s):
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"""True if there is any vertical whitespace in s."""
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def relpath(base, path):
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"""Return path relative to base, or raise exception.
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The path may be either an absolute path or a path relative to the
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current working directory.
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os.path.commonprefix (python2.4) has a bad bug that it works just
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on string prefixes, assuming that '/u' is a prefix of '/u2'. This
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avoids that problem."""
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while len(head) >= len(base):
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raise BzrError("Could not start any editor. Please specify $EDITOR or use ~/.bzr.conf/editor")
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def get_text_message(infotext, ignoreline = "default"):
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if ignoreline == "default":
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ignoreline = "-- This line and the following will be ignored --"
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head, tail = os.path.split(head)
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# XXX This should raise a NotChildPath exception, as its not tied
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raise PathNotChild(rp, base)
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return os.sep.join(s)
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def terminal_width():
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"""Return estimated terminal width."""
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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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tmp_fileno, msgfilename = tempfile.mkstemp()
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msgfile = os.close(tmp_fileno)
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if infotext is not None and infotext != "":
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msgfile = file(msgfilename, "w")
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msgfile.write("\n\n%s\n\n%s" % (ignoreline, infotext))
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if not _run_editor(msgfilename):
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lastline, nlines = 0, 0
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for line in file(msgfilename, "r"):
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stripped_line = line.strip()
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# strip empty line before the log message starts
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if stripped_line != "":
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# check for the ignore line only if there
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# is additional information at the end
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if hasinfo and stripped_line == ignoreline:
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# keep track of the last line that had some content
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if stripped_line != "":
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# delete empty lines at the end
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# add a newline at the end, if needed
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if not msg[-1].endswith("\n"):
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return "%s%s" % ("".join(msg), "\n")
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# delete the msg file in any case
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try: os.unlink(msgfilename)
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return int(os.environ['COLUMNS'])
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except (IndexError, KeyError, ValueError):
added
removed
bzrlib/osutils.py
