/brz/remove-bazaar

# Copyright (C) 2005 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

"""\

Routines for extracting all version information from a bzr branch.

"""

import time

import pprint

from StringIO import StringIO

from bzrlib.errors import NoWorkingTree

from bzrlib.log import show_log, log_formatter

from bzrlib.rio import RioReader, RioWriter, Stanza

from bzrlib.osutils import local_time_offset, format_date

def get_file_revisions(branch, check=False):

    """Get the last changed revision for all files.

    :param branch: The branch we are checking.

    :param check: See if there are uncommitted changes.

    :return: ({file_path => last changed revision}, Tree_is_clean)

    """

    clean = True

    file_revisions = {}

    basis_tree = branch.basis_tree()

    for path, ie in basis_tree.inventory.iter_entries():

        file_revisions[path] = ie.revision

    if not check:

        # Without checking, the tree looks clean

        return file_revisions, clean

    try:

        new_tree = branch.working_tree()

    except NoWorkingTree:

        # Without a working tree, everything is clean

        return file_revisions, clean

    from bzrlib.diff import compare_trees

    delta = compare_trees(basis_tree, new_tree, want_unchanged=False)

    # Using a 2-pass algorithm for renames. This is because you might have

    # renamed something out of the way, and then created a new file

    # in which case we would rather see the new marker

    # Or you might have removed the target, and then renamed

    # in which case we would rather see the renamed marker

    for old_path, new_path, file_id, kind, text_mod, meta_mod in delta.renamed:

        clean = False

        file_revisions[old_path] = u'renamed to %s' % (new_path,)

    for path, file_id, kind in delta.removed:

        clean = False

        file_revisions[path] = 'removed'

    for path, file_id, kind in delta.added:

        clean = False

        file_revisions[path] = 'new'

    for old_path, new_path, file_id, kind, text_mod, meta_mod in delta.renamed:

        clean = False

        file_revisions[new_path] = u'renamed from %s' % (old_path,)

    for path, file_id, kind, text_mod, meta_mod in delta.modified:

        clean = False

        file_revisions[path] = 'modified'

    for info in new_tree.list_files():

        path, status = info[0:2]

        if status == '?':

            file_revisions[path] = 'unversioned'

            clean = False

    return file_revisions, clean

# This contains a map of format id => formatter

# None is considered the default formatter

version_formats = {}

def create_date_str(timestamp=None, offset=None):

    """Just a wrapper around format_date to provide the right format.

    We don't want to use '%a' in the time string, because it is locale

    dependant. We also want to force timezone original, and show_offset

    Without parameters this function yields the current date in the local

    time zone.

    """

    if timestamp is None and offset is None:

        timestamp = time.time()

        offset = local_time_offset()

    return format_date(timestamp, offset, date_fmt='%Y-%m-%d %H:%M:%S',

                       timezone='original', show_offset=True)

def generate_rio_version(branch, to_file,

        check_for_clean=False,

        include_revision_history=False,

        include_file_revisions=False):

    """Create the version file for this project.

    :param branch: The branch to write information about

    :param to_file: The file to write the information

    :param check_for_clean: If true, check if the branch is clean.

        This can be expensive for large trees. This is also only

        valid for branches with working trees.

    :param include_revision_history: Write out the list of revisions, and

        the commit message associated with each

    :param include_file_revisions: Write out the set of last changed revision

        for each file.

    """

    info = Stanza()

    info.add('build-date', create_date_str())

    info.add('revno', str(branch.revno()))

    last_rev_id = branch.last_revision()

    if last_rev_id is not None:

        info.add('revision-id', last_rev_id)

        rev = branch.get_revision(last_rev_id)

        info.add('date', create_date_str(rev.timestamp, rev.timezone))

    if branch.nick is not None:

        info.add('branch-nick', branch.nick)

    file_revisions = {}

    clean = True

    if check_for_clean or include_file_revisions:

        file_revisions, clean = get_file_revisions(branch, check=check_for_clean)

    if check_for_clean:

        if clean:

            info.add('clean', 'True')

        else:

            info.add('clean', 'False')

    if include_revision_history:

        revs = branch.revision_history()

        log = Stanza()

        for rev_id in revs:

            rev = branch.get_revision(rev_id)

            log.add('id', rev_id)

            log.add('message', rev.message)

            log.add('date', create_date_str(rev.timestamp, rev.timezone))

        sio = StringIO()

        log_writer = RioWriter(to_file=sio)

        log_writer.write_stanza(log)

        info.add('revisions', sio.getvalue())

    if include_file_revisions:

        files = Stanza()

        for path in sorted(file_revisions.keys()):

            files.add('path', path)

            files.add('revision', file_revisions[path])

        sio = StringIO()

        file_writer = RioWriter(to_file=sio)

        file_writer.write_stanza(files)

        info.add('file-revisions', sio.getvalue())

    writer = RioWriter(to_file=to_file)

    writer.write_stanza(info)

version_formats['rio'] = generate_rio_version

# Default format is rio

version_formats[None] = generate_rio_version

# Header and footer for the python format

_py_version_header = '''#!/usr/bin/env python

"""\\

This file is automatically generated by generate_version_info

It uses the current working tree to determine the revision.

So don't edit it. :)

"""

'''

_py_version_footer = '''

if __name__ == '__main__':

    print 'revision: %(revno)d' % version_info

    print 'nick: %(branch_nick)s' % version_info

    print 'revision id: %(revision_id)s' % version_info

'''

def generate_python_version(branch, to_file,

        check_for_clean=False,

        include_revision_history=False,

        include_file_revisions=False):

    """Create a python version file for this project.

    :param branch: The branch to write information about

    :param to_file: The file to write the information

    :param check_for_clean: If true, check if the branch is clean.

        This can be expensive for large trees. This is also only

        valid for branches with working trees.

    :param include_revision_history: Write out the list of revisions, and

        the commit message associated with each

    :param include_file_revisions: Write out the set of last changed revision

        for each file.

    """

    # TODO: jam 20051228 The python output doesn't actually need to be

    #       encoded, because it should only generate ascii safe output.

    info = {'build_date':create_date_str()

              , 'revno':branch.revno()

              , 'revision_id':None

              , 'branch_nick':branch.nick

              , 'clean':None

              , 'date':None

    }

    revisions = []

    last_rev_id = branch.last_revision()

    if last_rev_id:

        rev = branch.get_revision(last_rev_id)

        info['revision_id'] = last_rev_id

        info['date'] = create_date_str(rev.timestamp, rev.timezone)

    file_revisions = {}

    clean = True

    if check_for_clean or include_file_revisions:

        file_revisions, clean = get_file_revisions(branch, check=check_for_clean)

    if check_for_clean:

        if clean:

            info['clean'] = True

        else:

            info['clean'] = False

    info_str = pprint.pformat(info)

    to_file.write(_py_version_header)

    to_file.write('version_info = ')

    to_file.write(info_str)

    to_file.write('\n\n')

    if include_revision_history:

        revs = branch.revision_history()

        for rev_id in revs:

            rev = branch.get_revision(rev_id)

            revisions.append((rev_id, rev.message, rev.timestamp, rev.timezone))

        revision_str = pprint.pformat(revisions)

        to_file.write('revisions = ')

        to_file.write(revision_str)

        to_file.write('\n\n')

    else:

        to_file.write('revisions = {}\n\n')

    if include_file_revisions:

        file_rev_str = pprint.pformat(file_revisions)

        to_file.write('file_revisions = ')

        to_file.write(file_rev_str)

        to_file.write('\n\n')

    else:

        to_file.write('file_revisions = {}\n\n')

    to_file.write(_py_version_footer)

version_formats['python'] = generate_python_version