~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005-2010 Canonical Ltd

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""bzr library"""

import time

# Keep track of when bzrlib was first imported, so that we can give rough

# timestamps relative to program start in the log file kept by bzrlib.trace.

_start_time = time.time()

import sys

if getattr(sys, '_bzr_lazy_regex', False):

    # The 'bzr' executable sets _bzr_lazy_regex.  We install the lazy regex

    # hack as soon as possible so that as much of the standard library can

    # benefit, including the 'string' module.

    del sys._bzr_lazy_regex

    import bzrlib.lazy_regex

    bzrlib.lazy_regex.install_lazy_compile()

IGNORE_FILENAME = ".bzrignore"

__copyright__ = "Copyright 2005-2010 Canonical Ltd."

# same format as sys.version_info: "A tuple containing the five components of

# the version number: major, minor, micro, releaselevel, and serial. All

# values except releaselevel are integers; the release level is 'alpha',

# 'beta', 'candidate', or 'final'. The version_info value corresponding to the

# Python version 2.0 is (2, 0, 0, 'final', 0)."  Additionally we use a

# releaselevel of 'dev' for unreleased under-development code.

version_info = (2, 2, 0, 'dev', 1)

# API compatibility version

api_minimum_version = (2, 1, 0)

def _format_version_tuple(version_info):

    """Turn a version number 2, 3 or 5-tuple into a short string.

    This format matches <http://docs.python.org/dist/meta-data.html>

    and the typical presentation used in Python output.

    This also checks that the version is reasonable: the sub-release must be

    zero for final releases.

    >>> print _format_version_tuple((1, 0, 0, 'final', 0))

    1.0.0

    >>> print _format_version_tuple((1, 2, 0, 'dev', 0))

    1.2.0dev

    >>> print bzrlib._format_version_tuple((1, 2, 0, 'dev', 1))

    1.2.0dev1

    >>> print _format_version_tuple((1, 1, 1, 'candidate', 2))

    1.1.1rc2

    >>> print bzrlib._format_version_tuple((2, 1, 0, 'beta', 1))

    2.1.0b1

    >>> print _format_version_tuple((1, 4, 0))

    1.4.0

    >>> print _format_version_tuple((1, 4))

    1.4

    >>> print bzrlib._format_version_tuple((2, 1, 0, 'final', 1))

    Traceback (most recent call last):

    ...

    ValueError: version_info (2, 1, 0, 'final', 1) not valid

    >>> print _format_version_tuple((1, 4, 0, 'wibble', 0))

    Traceback (most recent call last):

    ...

    ValueError: version_info (1, 4, 0, 'wibble', 0) not valid

    """

    if len(version_info) == 2:

        main_version = '%d.%d' % version_info[:2]

    else:

        main_version = '%d.%d.%d' % version_info[:3]

    if len(version_info) <= 3:

        return main_version

    release_type = version_info[3]

    sub = version_info[4]

    # check they're consistent

    if release_type == 'final' and sub == 0:

        sub_string = ''

    elif release_type == 'dev' and sub == 0:

        sub_string = 'dev'

    elif release_type == 'dev':

        sub_string = 'dev' + str(sub)

    elif release_type in ('alpha', 'beta'):

        sub_string = release_type[0] + str(sub)

    elif release_type == 'candidate':

        sub_string = 'rc' + str(sub)

    else:

        raise ValueError("version_info %r not valid" % (version_info,))

    return main_version + sub_string

__version__ = _format_version_tuple(version_info)

version_string = __version__

def test_suite():

    import tests

    return tests.test_suite()

def initialize(

    setup_ui=True,

    stdin=None, stdout=None, stderr=None):

    """Set up everything needed for normal use of bzrlib.

    Most applications that embed bzrlib, including bzr itself, should call

    this function to initialize various subsystems.  

    More options may be added in future so callers should use named arguments.

    :param setup_ui: If true (default) use a terminal UI; otherwise 

        something else must be put into `bzrlib.ui.ui_factory`.

    :param stdin, stdout, stderr: If provided, use these for terminal IO;

        otherwise use the files in `sys`.

    """

    # TODO: mention this in a guide to embedding bzrlib

    #

    # NB: This function tweaks so much global state it's hard to test it in

    # isolation within the same interpreter.  It's not reached on normal

    # in-process run_bzr calls.  If it's broken, we expect that

    # TestRunBzrSubprocess may fail.

    import atexit

    import bzrlib.trace

    bzrlib.trace.enable_default_logging()

    atexit.register(bzrlib.trace._flush_stdout_stderr)

    atexit.register(bzrlib.trace._flush_trace)

    import bzrlib.ui

    if stdin is None:

        stdin = sys.stdin

    if stdout is None:

        stdout = sys.stdout

    if stderr is None:

        stderr = sys.stderr

    if setup_ui:

        bzrlib.ui.ui_factory = bzrlib.ui.make_ui_for_terminal(

            stdin, stdout, stderr)

    if bzrlib.version_info[3] == 'final':

        from bzrlib.symbol_versioning import suppress_deprecation_warnings

        suppress_deprecation_warnings(override=True)

    import bzrlib.osutils

    atexit.register(osutils.report_extension_load_failures)