/brz/remove-bazaar

# Copyright (C) 2010 Parth Malwankar <parth.malwankar@gmail.com>

#

# 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

"""bzr grep"""

import os

import sys

from bzrlib import errors, lazy_regex

from bzrlib.commands import Command, register_command, display_command

from bzrlib.option import (

    Option,

    )

from bzrlib.lazy_import import lazy_import

lazy_import(globals(), """

import re

import bzrlib

from bzrlib import (

    osutils,

    bzrdir,

    )

""")

version_info = (0, 1)

class cmd_grep(Command):

    """Print lines matching PATTERN for specified files.

    """

    takes_args = ['pattern', 'path*']

    takes_options = [

        'verbose',

        Option('ignore-case', short_name='i',

               help='ignore case distinctions while matching.'),

        Option('recursive', short_name='R',

               help='Recurse into subdirectories.'),

        Option('from-root',

               help='Search for pattern starting from the root of the branch.'),

        Option('null', short_name='z',

               help='Write an ascii NUL (\\0) separator '

               'between output lines rather than a newline.'),

        ]

    @display_command

    def run(self, verbose=False, ignore_case=False, recursive=False, from_root=False,

            null=False, path_list=None, pattern=None):

        if path_list == None:

            path_list = ['.']

        else:

            if from_root:

                raise errors.BzrCommandError('cannot specify both --from-root and PATH.')

        tree, branch, relpath = bzrdir.BzrDir.open_containing_tree_or_branch('.')

        re_flags = 0

        if ignore_case:

            re_flags = re.IGNORECASE

        eol_marker = '\n'

        if null:

            eol_marker = '\0'

        patternc = None

        try:

            # use python's re.compile as we need to catch re.error in case of bad pattern

            lazy_regex.reset_compile()

            patternc = re.compile(pattern, re_flags)

        except re.error, e:

            raise errors.BzrError("Invalid pattern: '%s'" % pattern)

        tree.lock_read()

        self.add_cleanup(tree.unlock)

        for path in path_list:

            if osutils.isdir(path):

                from_dir = os.path.abspath(os.path.join(relpath, path))

                for fp, fc, fkind, fid, entry in tree.list_files(include_root=False,

                    from_dir=from_dir, recursive=recursive):

                    if fc == 'V' and fkind == 'file':

                        self.file_grep(fp, patternc, eol_marker)

            else:

                # if user has explicitly specified a file

                # we don't care if its versioned

                self.file_grep(path, patternc, eol_marker)

    def file_grep(self, path, patternc, eol_marker):

        index = 1

        fmt = "%s:%d:%s" + eol_marker

        for line in open(path):

            res = patternc.search(line)

            if res:

                self.outf.write( fmt % (path, index, line.strip()))

            index += 1

register_command(cmd_grep)