/brz/remove-bazaar

# Copyright (C) 2008 Aaron Bentley <aaron@aaronbentley.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

import copy

from cStringIO import StringIO

import os.path

import shutil

import sys

import tempfile

from bzrlib import (

    builtins,

    delta,

    diff,

    errors,

    osutils,

    patches,

    workingtree)

from bzrlib.plugins.bzrtools import colordiff, hunk_selector

from bzrlib.plugins.bzrtools.patch import run_patch

from bzrlib.plugins.bzrtools.userinteractor import getchar

from bzrlib.plugins.shelf2 import shelf

class Shelver(object):

    def __init__(self, work_tree, target_tree, path, auto=False,

                 auto_apply=False):

        self.work_tree = work_tree

        self.target_tree = target_tree

        self.path = path

        self.diff_file = StringIO()

        self.text_differ = diff.DiffText(self.target_tree, self.work_tree,

                                         self.diff_file)

        self.diff_writer = colordiff.DiffWriter(sys.stdout, False)

        self.manager = work_tree.get_shelf_manager()

        self.auto = auto

        self.auto_apply = auto_apply

    @classmethod

    def from_args(klass, revision=None, all=False):

        tree, path = workingtree.WorkingTree.open_containing('.')

        target_tree = builtins._get_one_revision_tree('shelf2', revision,

            tree.branch, tree)

        return klass(tree, target_tree, path, all, all)

    def run(self):

        creator = shelf.ShelfCreator(self.work_tree, self.target_tree)

        self.tempdir = tempfile.mkdtemp()

        changes_shelved = 0

        try:

            for change in creator:

                if change[0] == 'modify text':

                    changes_shelved += self.handle_modify_text(creator,

                                                               change[1])

                if change[0] == 'add file':

                    if self.prompt_bool('Shelve adding file "%s"?'

                                        % change[3]):

                        creator.shelve_creation(change[1])

                        changes_shelved += 1

                if change[0] == 'delete file':

                    if self.prompt_bool('Shelve removing file "%s"? '

                                        % change[3]):

                        creator.shelve_deletion(change[1])

                        changes_shelved += 1

                if change[0] == 'rename':

                    if self.prompt_bool('Shelve renaming %s => %s?' %

                                   change[2:]):

                        creator.shelve_rename(change[1])

                        changes_shelved += 1

            if changes_shelved > 0:

                print "Selected changes:"

                changes = creator.work_transform.iter_changes()

                reporter = delta._ChangeReporter(output_file=sys.stdout)

                delta.report_changes(changes, reporter)

                if (self.prompt_bool('Shelve %d change(s)?' %

                    changes_shelved, auto=self.auto_apply)):

                    self.manager.shelve_changes(creator)

            else:

                print 'No changes to shelve.'

        finally:

            shutil.rmtree(self.tempdir)

            creator.finalize()

    def get_parsed_patch(self, file_id):

        old_path = self.work_tree.id2path(file_id)

        new_path = self.target_tree.id2path(file_id)

        try:

            patch = self.text_differ.diff(file_id, old_path, new_path, 'file',

                                          'file')

            self.diff_file.seek(0)

            return patches.parse_patch(self.diff_file)

        finally:

            self.diff_file.truncate(0)

    def prompt_bool(self, question, auto=None):

        if auto is None:

            auto = self.auto

        if auto:

            return True

        message = question + ' [yNfq]'

        print message,

        char = getchar()

        print "\r" + ' ' * len(message) + '\r',

        if char == 'y':

            return True

        elif char == 'f':

            self.auto = True

            return True

        if char == 'q':

            sys.exit(0)

        else:

            return False

    def handle_modify_text(self, creator, file_id):

        parsed = self.get_parsed_patch(file_id)

        final_hunks = []

        if not self.auto:

            offset = 0

            for hunk in parsed.hunks:

                self.diff_writer.write(str(hunk))

                if not self.prompt_bool('Shelve?'):

                    hunk.mod_pos += offset

                    final_hunks.append(hunk)

                else:

                    offset -= (hunk.mod_range - hunk.orig_range)

        target_lines = self.target_tree.get_file_lines(file_id)

        patched = patches.iter_patched_from_hunks(target_lines, final_hunks)

        creator.shelve_text(file_id, list(patched))

        return len(parsed.hunks) - len(final_hunks)

class Unshelver(object):

    @classmethod

    def from_args(klass):

        tree, path = workingtree.WorkingTree.open_containing('.')

        manager = tree.get_shelf_manager()

        shelf_id = manager.last_shelf()

        if shelf_id is None:

            raise errors.BzrCommandError('No changes are shelved.')

        return klass(tree, manager, shelf_id)

    def __init__(self, tree, manager, shelf_id):

        self.tree = tree

        self.manager = manager

        self.shelf_id = shelf_id

    def run(self):

        self.tree.lock_write()

        cleanups = [self.tree.unlock]

        try:

            unshelver = self.manager.get_unshelver(self.shelf_id)

            cleanups.append(unshelver.finalize)

            unshelver.unshelve()

            self.manager.delete_shelf(self.shelf_id)

        finally:

            for cleanup in reversed(cleanups):

                cleanup()