/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, verbose, 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, verbose, outf, path_prefix)

                else:

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

                        compiled_pattern, eol_marker, line_number, revno,

                        print_revno, include, exclude, verbose, outf)

        finally:

            wt.unlock()

def workingtree_grep(compiled_pattern, path_list, recursive,

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

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

    tree, branch, relpath = \

        bzrdir.BzrDir.open_containing_tree_or_branch('.')

    tree.lock_read()

    try:

        for path in path_list:

            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, verbose, outf, path_prefix)

            else:

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

                    eol_marker, line_number, revno, print_revno, include,

                    exclude, verbose, outf)

    finally:

        tree.unlock()

def _skip_file(include, exclude, path):

    if include and not _path_in_glob_list(path, include):

        return True

    if exclude and _path_in_glob_list(path, exclude):

        return True

    return False

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

        from_root, eol_marker, revno, print_revno, include, exclude, verbose,

        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

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

        from_dir=from_dir, recursive=recursive):

        if _skip_file(include, exclude, fp):

            continue

        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, verbose,

                    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, verbose, outf, path_prefix)

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, verbose, 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, verbose,

        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

_user_encoding = osutils.get_user_encoding()

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

        revno, print_revno, include, exclude, verbose, outf, path_prefix=None):

    # test and skip binary files

    if '\x00' in file_text[:1024]:

        if verbose:

            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)

    fmt = path + ":%s" + eol_marker

    fmt_n = path + ":%d:%s" + eol_marker

    fmt_rev = path + "~%s:%s" + eol_marker

    fmt_rev_n = path + "~%s:%d:%s" + eol_marker

    # for better performance we moved formatting conditionals out

    # of the core loop. hence, the core loop is somewhat duplicated

    # for various combinations of formatting options.

    if print_revno and line_number:

        pfmt = fmt_rev_n

        for index, line in enumerate(file_text.split("\n")):

            if patternc.search(line):

                line = line.decode(_user_encoding, 'replace')

                outf.write(pfmt % (revno, index+1, line))

    elif print_revno and not line_number:

        pfmt = fmt_rev

        for line in file_text.split("\n"):

            if patternc.search(line):

                line = line.decode(_user_encoding, 'replace')

                outf.write(pfmt % (revno, line))

    elif not print_revno and line_number:

        pfmt = fmt_n

        for index, line in enumerate(file_text.split("\n")):

            if patternc.search(line):

                line = line.decode(_user_encoding, 'replace')

                outf.write(pfmt % (index+1, line))

    else:

        pfmt = fmt

        for line in file_text.split("\n"):

            if patternc.search(line):

                line = line.decode(_user_encoding, 'replace')

                outf.write(pfmt % (line,))