/brz/remove-bazaar

# Copyright (C) 2008 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

"""Upload a working tree, incrementally.

The only bzr-related info uploaded with the working tree is the corrseponding

revision id. The uploaded working tree is not linked to any other bzr data.

The intended use is for web sites.

"""

from bzrlib import (

    commands,

    option,

    )

class cmd_upload(commands.Command):

    """Upload a working tree, as a whole or incrementally.

    If no destination is specified use the last one used.

    If no revision is specified upload the changes since the last upload.

    """

    takes_args = ['location?']

    takes_options = [

        'revision',

        'remember',

        option.Option('full', 'Upload the full working tree.'),

        option.Option('directory',

                      help='Branch to upload from, '

                      'rather than the one containing the working directory.',

                      short_name='d',

                      type=unicode,

                      ),

       ]

    def run(self, location, full=False, revision=None, remember=None,

            directory=None,

            ):

        # Import the needed modules but only once we are required to run to

        # avoid degrading bzr startup time

        from bzrlib import (

            branch,

            errors,

            revisionspec,

            transport,

            )

        if directory is None:

            directory = u'.'

        self.branch = branch.Branch.open_containing(directory)[0]

        if location is None:

            stored_loc = self.get_upload_location()

            if stored_loc is None:

                raise errors.BzrCommandError('No upload location'

                                             ' known or specified.')

            else:

                display_url = urlutils.unescape_for_display(stored_loc,

                        self.outf.encoding)

                self.outf.write("Using saved location: %s\n" % display_url)

                location = stored_loc

        self.to_transport = transport.get_transport(location)

        if revision is None:

            rev_id = self.branch.last_revision()

        else:

            if len(revision) != 1:

                raise errors.BzrCommandError(

                    'bzr upload --revision takes exactly 1 argument')

            rev_id = revision[0].in_history(self.branch).rev_id

        self.tree = self.branch.repository.revision_tree(rev_id)

        self.rev_id = rev_id

        self._pending_renames = []

        if full:

            self.upload_full_tree()

        else:

            self.upload_tree()

        # We uploaded successfully, remember it

        if self.get_upload_location() is None or remember:

            self.set_upload_location(self.to_transport.base)

    def set_upload_location(self, location):

        self.branch.get_config().set_user_option('upload_location', location)

    def get_upload_location(self):

        return self.branch.get_config().get_user_option('upload_location')

    bzr_upload_revid_file_name = '.bzr-upload.revid'

    def set_uploaded_revid(self, rev_id):

        # XXX: Add tests for concurrent updates, etc.

        self.to_transport.put_bytes(self.bzr_upload_revid_file_name, rev_id)

    def get_uploaded_revid(self):

        return self.to_transport.get_bytes(self.bzr_upload_revid_file_name)

    def upload_file(self, relpath, id):

        self.to_transport.put_bytes(relpath, self.tree.get_file_text(id))

    def make_remote_dir(self, relpath):

        # XXX: handle mode

        self.to_transport.mkdir(relpath)

    def rename_remote(self, old_relpath, new_relpath):

        """Rename a remote file or directory taking care of collisions.

        To avoid collisions during bulk renames, each renamed target is

        temporarily assigned a unique name. When all renames have been done,

        each target get its proper name.

        """

        # We generate a sufficiently random name to *assume* that

        # no collisions will occur and don't worry about it (nor

        # handle it).

        import os

        import random

        import time

        stamp = '.tmp.%.9f.%d.%d' % (time.time(),

                                     os.getpid(),

                                     random.randint(0,0x7FFFFFFF))

        self.to_transport.rename(old_relpath, stamp)

        self._pending_renames.append((stamp, new_relpath))

    def finish_renames(self):

        for (stamp, new_path) in self._pending_renames:

            self.to_transport.rename(stamp, new_path)

        # The following shouldn't be needed since we use it once per upload,

        # but better safe than sorry ;-)

        self._pending_renames = []

    def upload_full_tree(self):

        self.to_transport.ensure_base() # XXX: Handle errors (add

                                        # --create-prefix option ?)

        self.tree.lock_read()

        try:

            for dp, ie in self.tree.inventory.iter_entries():

                if dp in ('', '.bzrignore'):

                    # skip root ('')

                    # .bzrignore has no meaning outside of a working tree

                    # so do not upload it

                    continue

                if ie.kind == 'file':

                    self.upload_file(dp, ie.file_id)

                elif ie.kind == 'directory':

                    try:

                        self.make_remote_dir(dp)

                    except errors.FileExists:

                        # The directory existed before the upload

                        pass

                else:

                    raise NotImplementedError

            self.set_uploaded_revid(self.rev_id)

        finally:

            self.tree.unlock()

    def upload_tree(self):

        # XXX: errors out if NoSuchFile and recommand --full on first upload ?

        # Add tests.

        rev_id = self.get_uploaded_revid()

        # XXX: errors out if rev_id not in branch history (probably someone

        # uploaded from a different branch).

        from_tree = self.branch.repository.revision_tree(rev_id)

        self.to_transport.ensure_base() # XXX: Handle errors (add

                                        # --create-prefix option ?)

        changes = self.tree.changes_from(from_tree)

        self.tree.lock_read()

        try:

            # XXX: handle removed, kind_changed

            for (old_path, new_path, id, kind,

                 content_change, exec_change) in changes.renamed:

                self.rename_remote(old_path, new_path)

            self.finish_renames()

            for (path, id, kind) in changes.added:

                if kind is 'file':

                    self.upload_file(path, id)

                elif kind is 'directory':

                    self.make_remote_dir(path)

                else:

                    raise NotImplementedError

            # XXX: Add a test for exec_change

            for (path, id, kind,

                 content_change, exec_change) in changes.modified:

                if kind is 'file':

                    self.upload_file(path, id)

                else:

                    raise NotImplementedError

            self.set_uploaded_revid(self.rev_id)

        finally:

            self.tree.unlock()

commands.register_command(cmd_upload)

def test_suite():

    from bzrlib.tests import TestUtil

    suite = TestUtil.TestSuite()

    loader = TestUtil.TestLoader()

    testmod_names = [

        'test_upload',

        ]

    suite.addTest(loader.loadTestsFromModuleNames(

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

    return suite