/brz/remove-bazaar

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

from bzrlib.lazy_import import lazy_import

lazy_import(globals(), """

import os

import re

import cStringIO

from fnmatch import fnmatch

from bzrlib import log as logcmd

from bzrlib import bzrdir

from bzrlib.workingtree import WorkingTree

from bzrlib.revisionspec import RevisionSpec, RevisionSpec_revid

from bzrlib import (

    errors,

    lazy_regex,

    osutils,

    textfile,

    trace,

    )

""")

def compile_pattern(pattern, flags=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, flags)

    except re.error, e:

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

    return patternc

def versioned_grep(revision, compiled_pattern, path_list, recursive,

        line_number, from_root, eol_marker, print_revno, levels,

        include, exclude, outf):

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

    start_rev = revision[0]

    end_rev = revision[0]

    if len(revision) == 2:

        end_rev = revision[1]

    start_revid = start_rev.as_revision_id(wt.branch)

    end_revid   = end_rev.as_revision_id(wt.branch)

    given_revs = logcmd._graph_view_revisions(wt.branch, start_revid, end_revid)

    given_revs = list(given_revs)

    for revid, revno, merge_depth in given_revs:

        if levels == 1 and merge_depth != 0:

            # with level=1 show only top level

            continue

        wt.lock_read()

        rev = RevisionSpec_revid.from_string("revid:"+revid)

        try:

            for path in path_list:

                tree = rev.as_tree(wt.branch)

                path_for_id = osutils.pathjoin(relpath, path)

                id = tree.path2id(path_for_id)

                if not id:

                    trace.warning("Skipped unknown file '%s'." % path)

                    continue

                if osutils.isdir(path):

                    path_prefix = path

                    dir_grep(tree, path, relpath, recursive, line_number,

                        compiled_pattern, from_root, eol_marker, revno, print_revno,

                        include, exclude, outf, path_prefix)

                else:

                    tree.lock_read()

                    try:

                        versioned_file_grep(tree, id, '.', path,

                            compiled_pattern, eol_marker, line_number, revno,

                            print_revno, include, exclude, outf)

                    finally:

                        tree.unlock()

        finally:

            wt.unlock()

def workingtree_grep(compiled_pattern, path_list, recursive,

        line_number, from_root, eol_marker, include, exclude, outf):

    revno = print_revno = None # for working tree set revno to None

    for path in path_list:

        tree, branch, relpath = \

            bzrdir.BzrDir.open_containing_tree_or_branch('.')

        if osutils.isdir(path):

            path_prefix = path

            dir_grep(tree, path, relpath, recursive, line_number,

                compiled_pattern, from_root, eol_marker, revno, print_revno,

                include, exclude, outf, path_prefix)

        else:

            _file_grep(open(path).read(), '.', path, compiled_pattern, eol_marker,

                line_number, revno, print_revno, include, exclude, outf)

def dir_grep(tree, path, relpath, recursive, line_number, compiled_pattern,

    from_root, eol_marker, revno, print_revno, include, exclude, outf, path_prefix):

        # setup relpath to open files relative to cwd

        rpath = relpath

        if relpath:

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

        from_dir = osutils.pathjoin(relpath, path)

        if from_root:

            # start searching recursively from root

            from_dir=None

            recursive=True

        tree.lock_read()

        try:

            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':

                    if revno != None:

                        versioned_file_grep(tree, fid, rpath, fp,

                            compiled_pattern, eol_marker, line_number,

                            revno, print_revno, include, exclude, outf, path_prefix)

                    else:

                        # we are grepping working tree.

                        if from_dir == None:

                            from_dir = '.'

                        path_for_file = osutils.pathjoin(tree.basedir, from_dir, fp)

                        _file_grep(open(path_for_file).read(), rpath, fp,

                            compiled_pattern, eol_marker, line_number, revno,

                            print_revno, include, exclude, outf, path_prefix)

        finally:

            tree.unlock()

def _make_display_path(relpath, path):

    """Return path string relative to user cwd.

    Take tree's 'relpath' and user supplied 'path', and return path

    that can be displayed to the user.

    """

    if relpath:

        # update path so to display it w.r.t cwd

        # handle windows slash separator

        path = osutils.normpath(osutils.pathjoin(relpath, path))

        path = path.replace('\\', '/')

        path = path.replace(relpath + '/', '', 1)

    return path

def versioned_file_grep(tree, id, relpath, path, patternc, eol_marker,

        line_number, revno, print_revno, include, exclude, outf,

        path_prefix = None):

    """Create a file object for the specified id and pass it on to _file_grep.

    """

    path = _make_display_path(relpath, path)

    file_text = tree.get_file_text(id)

    _file_grep(file_text, relpath, path, patternc, eol_marker,

        line_number, revno, print_revno, include, exclude, outf, path_prefix)

def _path_in_glob_list(path, glob_list):

    present = False

    for glob in glob_list:

        if fnmatch(path, glob):

            present = True

            break

    return present

def _file_grep(file_text, relpath, path, patternc, eol_marker,

        line_number, revno, print_revno, include, exclude, outf,

        path_prefix=None):

    if include and not _path_in_glob_list(path, include):

        return

    if exclude and _path_in_glob_list(path, exclude):

        return

    # test and skip binary files

    str_file = cStringIO.StringIO(file_text)

    try:

        file_iter = textfile.text_file(str_file)

    except errors.BinaryFile, e:

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

        return

    if path_prefix and path_prefix != '.':

        # user has passed a dir arg, show that as result prefix

        path = osutils.pathjoin(path_prefix, path)

    revfmt = ''

    if print_revno:

        revfmt = "~%s"

    fmt_with_n = path + revfmt + ":%d:%s" + eol_marker

    fmt_without_n = path + revfmt + ":%s" + eol_marker

    # grep through iterable file object and print out the lines

    # matching the compiled pattern in the specified format.

    index = 1

    for line in file_iter:

        res = patternc.search(line)

        if res:

            if line_number:

                if print_revno:

                    out = (revno, index, line.strip())

                else:

                    out = (index, line.strip())

                outf.write(fmt_with_n % out)

            else:

                if print_revno:

                    out = (revno, line.strip())

                else:

                    out = (line.strip(),)

                outf.write(fmt_without_n % out)

        index += 1