/brz/remove-bazaar

# Copyright (C) 2004, 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

"""File annotate based on weave storage"""

# TODO: Choice of more or less verbose formats:

# 

# interposed: show more details between blocks of modified lines

# TODO: Show which revision caused a line to merge into the parent

# TODO: perhaps abbreviate timescales depending on how recent they are

# e.g. "3:12 Tue", "13 Oct", "Oct 2005", etc.  

import sys

import time

from bzrlib.config import extract_email_address

from bzrlib.errors import NoEmailInUsername

def annotate_file(branch, rev_id, file_id, verbose=False, full=False,

        to_file=None):

    if to_file is None:

        to_file = sys.stdout

    prevanno=''

    annotation = list(_annotate_file(branch, rev_id, file_id))

    if len(annotation) == 0:

        max_origin_len = 0

    else:

        max_origin_len = max(len(origin) for origin in set(x[1] for x in annotation))

    for (revno_str, author, date_str, line_rev_id, text ) in annotation:

        if verbose:

            anno = '%5s %-*s %8s ' % (revno_str, max_origin_len, author, date_str)

        else:

            anno = "%5s %-7s " % ( revno_str, author[:7] )

        if anno.lstrip() == "" and full: anno = prevanno

        print >>to_file, '%s| %s' % (anno, text)

        prevanno=anno

def _annotate_file(branch, rev_id, file_id ):

    rh = branch.revision_history()

    w = branch.repository.weave_store.get_weave(file_id, 

        branch.repository.get_transaction())

    last_origin = None

    annotations = list(w.annotate_iter(rev_id))

    revision_ids = set(o for o, t in annotations)

    revision_ids = [o for o in revision_ids if 

                    branch.repository.has_revision(o)]

    revisions = dict((r.revision_id, r) for r in 

                     branch.repository.get_revisions(revision_ids))

    for origin, text in annotations:

        text = text.rstrip('\r\n')

        if origin == last_origin:

            (revno_str, author, date_str) = ('','','')

        else:

            last_origin = origin

            if origin not in revisions:

                (revno_str, author, date_str) = ('?','?','?')

            else:

                if origin in rh:

                    revno_str = str(rh.index(origin) + 1)

                else:

                    revno_str = 'merge'

            rev = revisions[origin]

            tz = rev.timezone or 0

            date_str = time.strftime('%Y%m%d', 

                                     time.gmtime(rev.timestamp + tz))

            # a lazy way to get something like the email address

            # TODO: Get real email address

            author = rev.committer

            try:

                author = extract_email_address(author)

            except NoEmailInUsername:

                pass        # use the whole name

        yield (revno_str, author, date_str, origin, text)

def reannotate(parents_lines, new_lines, new_revision_id):

    """Create a new annotated version from new lines and parent annotations.

    :param parents_lines: List of annotated lines for all parents

    :param new_lines: The un-annotated new lines

    :param new_revision_id: The revision-id to associate with new lines

        (will often be CURRENT_REVISION)

    """

    if len(parents_lines) == 1:

        for data in _reannotate(parents_lines[0], new_lines, new_revision_id):

            yield data

    else:

        reannotations = [list(_reannotate(p, new_lines, new_revision_id)) for

                         p in parents_lines]

        for annos in zip(*reannotations):

            origins = set(a for a, l in annos)

            line = annos[0][1]

            if len(origins) == 1:

                yield iter(origins).next(), line

            elif len(origins) == 2 and new_revision_id in origins:

                yield (x for x in origins if x != new_revision_id).next(), line

            else:

                yield new_revision_id, line

def _reannotate(parent_lines, new_lines, new_revision_id):

    plain_parent_lines = [l for r, l in parent_lines]

    patiencediff.PatienceSequenceMatcher()

    matcher = patiencediff.PatienceSequenceMatcher(None, plain_parent_lines,

                                                   new_lines)

    new_cur = 0

    for i, j, n in matcher.get_matching_blocks():

        for line in new_lines[new_cur:j]:

            yield new_revision_id, line

        for data in parent_lines[i:i+n]:

            yield data

        new_cur = j + n