/brz/remove-bazaar

# Copyright (C) 2010 Canonical Ltd

# 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

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 grep

import bzrlib

from bzrlib.revisionspec import RevisionSpec, RevisionInfo

from bzrlib.workingtree import WorkingTree

from bzrlib import (

    osutils,

    bzrdir,

    trace,

    )

""")

version_info = (0, 1)

class cmd_grep(Command):

    """Print lines matching PATTERN for specified files and revisions.

    This command searches the specified files and revisions for a given pattern.

    The pattern is specified as a Python regular expressions[1].

    If the file name is not specified the file revisions in the current directory

    are searched. If the revision number is not specified, the latest revision is

    searched.

    Note that this command is different from POSIX grep in that it searches the

    revisions of the branch and not the working copy. Unversioned files and

    uncommitted changes are not seen.

    When searching a pattern, the output is shown in the 'filepath:string' format.

    If a revision is explicitly searched, the output is shown as 'filepath~N:string',

    where N is the revision number.

    [1] http://docs.python.org/library/re.html#regular-expression-syntax

    """

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

    takes_options = [

        'verbose',

        'revision',

        Option('line-number', short_name='n',

               help='show 1-based line number.'),

        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. '

               '(implies --recursive)'),

        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, line_number=False, path_list=None, revision=None, pattern=None):

        if path_list == None:

            path_list = ['.']

        else:

            if from_root:

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

        print_revno = False

        if revision == None:

            # grep on latest revision by default

            revision = [RevisionSpec.from_string("last:1")]

        else:

            print_revno = True # used to print revno in output.

        start_rev = revision[0]

        end_rev = None

        if len(revision) == 2:

            end_rev = revision[1]

        eol_marker = '\n'

        if null:

            eol_marker = '\0'

        re_flags = 0

        if ignore_case:

            re_flags = re.IGNORECASE

        patternc = grep.compile_pattern(pattern, re_flags)

        wt, relpath = WorkingTree.open_containing('.')

        id_to_revno = wt.branch.get_revision_id_to_revno_map()

        rev = start_rev

        wt.lock_read()

        try:

            for path in path_list:

                tree = rev.as_tree(wt.branch)

                revid = rev.as_revision_id(wt.branch)

                try:

                    revno = self._revno_str(id_to_revno, revid)

                except KeyError, e:

                    self._skip_file(path)

                    continue

                if osutils.isdir(path):

                    self._grep_dir(tree, relpath, recursive, line_number,

                        patternc, from_root, eol_marker, revno, print_revno)

                else:

                    id = tree.path2id(path)

                    if not id:

                        self._skip_file(path)

                        continue

                    tree.lock_read()

                    try:

                        grep.file_grep(tree, id, '.', path, patternc, eol_marker,

                            self.outf, line_number, revno, print_revno)

                    finally:

                        tree.unlock()

        finally:

            wt.unlock()

    def _skip_file(self, path):

        trace.warning("warning: skipped unversioned file '%s'." % path)

    def _revno_str(self, id_to_revno_dict, revid):

        revno = ".".join([str(n) for n in id_to_revno_dict[revid]])

        return revno

    def _grep_dir(self, tree, relpath, recursive, line_number, compiled_pattern,

        from_root, eol_marker, revno, print_revno):

            # setup relpath to open files relative to cwd

            rpath = relpath

            if relpath:

                rpath = osutils.pathjoin('..',relpath)

            tree.lock_read()

            try:

                if from_root:

                    # start searching recursively from root

                    relpath=None

                    recursive=True

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

                    from_dir=relpath, recursive=recursive):

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

                        grep.file_grep(tree, fid, rpath, fp, compiled_pattern,

                            eol_marker, self.outf, line_number, revno, print_revno)

            finally:

                tree.unlock()

register_command(cmd_grep)

def test_suite():

    from bzrlib.tests import TestUtil

    suite = TestUtil.TestSuite()

    loader = TestUtil.TestLoader()

    testmod_names = [

        'test_grep',

        ]

    suite.addTest(loader.loadTestsFromModuleNames(

            ["%s.%s" % (__name__, tmn) for tmn in testmod_names]))

    return suite