/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 errors import UncleanError

def is_clean(branch):

    """Check if a branch is clean.

    :param branch: The branch to check for changes

    TODO: jam 20051228 This might be better to ask for a WorkingTree

            instead of a Branch.

    :return: (is_clean, message)

    """

    try:

        new_tree = branch.working_tree()

    except NoWorkingTree:

        # Trees without a working tree can't be dirty :)

        return True, ''

    # Look for unknown files in the new tree

    for info in new_tree.list_files():

        path = info[0]

        file_class = info[1]

        if file_class == '?':

            return False, 'path %s is unknown' % (path,)

    from bzrlib.diff import compare_trees

    # See if there is anything that has been changed

    old_tree = branch.basis_tree()

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

    if len(delta.added) > 0:

        return False, 'have added files: %r' % (delta.added,)

    if len(delta.removed) > 0:

        return False, 'have removed files: %r' % (delta.removed,)

    if len(delta.modified) > 0:

        return False, 'have modified files: %r' % (delta.modified,)

    if len(delta.renamed) > 0:

        return False, 'have renamed files: %r' % (delta.renamed,)

    return True, ''

# This contains a map of format id => formatter

# None is considered the default formatter

version_formats = {}

def generate_rio_version(branch, to_file,

        check_for_clean=False,

        include_revision_history=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

    """

    info = Stanza()

    # TODO: jam 20051228 This might be better as the datestamp 

    #       of the last commit

    info.add('date', time.strftime('%Y-%m-%d %H:%M:%S (%A, %B %d, %Y, %Z)'))

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

    last_rev = branch.last_revision()

    if last_rev is not None:

        info.add('revision_id', last_rev)

    if branch.nick is not None:

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

    if check_for_clean:

        clean, message = is_clean(branch)

        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)

        sio = StringIO()

        log_writer = RioWriter(to_file=sio)

        log_writer.write_stanza(log)

        info.add('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):

    """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

    """

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

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

    info = {'date':time.strftime('%Y-%m-%d %H:%M:%S (%A, %B %d, %Y, %Z)')

              , 'revno':branch.revno()

              , 'revision_id':branch.last_revision()

              , 'revisions':None

              , 'branch_nick':branch.nick

              , 'clean':None

    }

    if include_revision_history:

        revs = branch.revision_history()

        log = []

        for rev_id in revs:

            rev = branch.get_revision(rev_id)

            log.append((rev_id, rev.message))

        info['revisions'] = log

    if check_for_clean:

        clean, message = is_clean(branch)

        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')

    to_file.write(_py_version_footer)

version_formats['python'] = generate_python_version