/brz/remove-bazaar

# Copyright (C) 2005, 2006 Canonical Development 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""Lists of ignore files, etc."""

import errno

from bzrlib import config

# This was the full ignore list for bzr 0.8

# please keep these sorted (in C locale order) to aid merging

OLD_DEFAULTS = [

    '#*#',

    '*$',

    '*,v',

    '*.BAK',

    '*.a',

    '*.bak',

    '*.elc',

    '*.exe',

    '*.la',

    '*.lo',

    '*.o',

    '*.obj',

    '*.orig',

    '*.py[oc]',

    '*.so',

    '*.tmp',

    '*~',

    '.#*',

    '.*.sw[nop]',

    '.*.tmp',

    # Our setup tests dump .python-eggs in the bzr source tree root

    './.python-eggs',

    '.DS_Store',

    '.arch-ids',

    '.arch-inventory',

    '.bzr.log',

    '.del-*',

    '.git',

    '.hg',

    '.jamdeps'

    '.libs',

    '.make.state',

    '.sconsign*',

    '.svn',

    '.sw[nop]',    # vim editing nameless file

    '.tmp*',

    'BitKeeper',

    'CVS',

    'CVS.adm',

    'RCS',

    'SCCS',

    'TAGS',

    '_darcs',

    'aclocal.m4',

    'autom4te*',

    'config.h',

    'config.h.in',

    'config.log',

    'config.status',

    'config.sub',

    'stamp-h',

    'stamp-h.in',

    'stamp-h1',

    '{arch}',

]

# ~/.bazaar/ignore will be filled out using

# this ignore list, if it does not exist

# please keep these sorted (in C locale order) to aid merging

USER_DEFAULTS = [

    '*.a',

    '*.o',

    '*.py[co]',

    '*.so',

    '*.sw[nop]',

    '*~',

    '.#*',

    '[#]*#',

]

def parse_ignore_file(f):

    """Read in all of the lines in the file and turn it into an ignore list"""

    ignored = []

    for line in f.read().decode('utf8').split('\n'):

        line = line.rstrip('\r\n')

        if not line or line.startswith('#'):

            continue

        ignored.append(line)

    return ignored

def get_user_ignores():

    """Get the list of user ignored files, possibly creating it."""

    path = config.user_ignore_config_filename()

    patterns = USER_DEFAULTS[:]

    try:

        f = open(path, 'rb')

    except (IOError, OSError), e:

        # open() shouldn't return an IOError without errno, but just in case

        err = getattr(e, 'errno', None)

        if err not in (errno.ENOENT,):

            raise

        # Create the ignore file, and just return the default

        # We want to ignore if we can't write to the file

        # since get_* should be a safe operation

        try:

            set_user_ignores(USER_DEFAULTS)

        except (IOError, OSError), e:

            if e.errno not in (errno.EPERM,):

                raise

        return patterns

    try:

        return parse_ignore_file(f)

    finally:

        f.close()

def set_user_ignores(patterns):

    """Fill out the user ignore file with the given patterns

    This may raise an error if it doesn't have permission to

    write to the user ignore file.

    """

    ignore_path = config.user_ignore_config_filename()

    config.ensure_config_dir_exists()

    # Create an empty file

    f = open(ignore_path, 'wb')

    try:

        for pattern in patterns:

            f.write(pattern.encode('utf8') + '\n')

    finally:

        f.close()

def add_unique_user_ignores(new_ignores):

    """Add entries to the user's ignore list if not present.

    :param new_ignores: A list of ignore patterns

    :return: The list of ignores that were added

    """

    ignored = set(get_user_ignores())

    to_add = []

    for ignore in new_ignores:

        if ignore not in ignored:

            ignored.add(ignore)

            to_add.append(ignore)

    if not to_add:

        return []

    f = open(config.user_ignore_config_filename(), 'ab')

    try:

        for pattern in to_add:

            f.write(pattern.encode('utf8') + '\n')

    finally:

        f.close()

    return to_add