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# Written by Alexander Belchenko
# based on Robert Collins code
#
# 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
"""Show all 'heads' in a repository"""
import os
import time
import bzrlib
from bzrlib.commands import Command, display_command, register_command
from bzrlib import errors
from bzrlib.option import Option
from bzrlib.urlutils import unescape_for_display
class cmd_heads(Command):
"""Show all revisions in a repository not having descendants.
"""
takes_options = [Option('by-date',
help='Sort heads by date (descending).'),
Option('all', help='Show all heads (dead and alive).'),
Option('dead-only', help='Show only dead heads.'),
Option('tips', help='Show tips of all branches.'),
Option('debug-time',
help='Enable debug print of operations times.'),
]
encoding_type = "replace"
takes_args = ['location?']
@display_command
def run(self, by_date=False, all=False, dead_only=False, tips=False,
debug_time=False, location='.'):
import bzrlib.branch
from bzrlib.osutils import format_date
import bzrlib.repository
self._init_elapsed_time(debug_time)
to_file = self.outf
branch = None
try:
branch = bzrlib.branch.Branch.open_containing(location)[0]
repo = branch.repository
except errors.NotBranchError:
try:
repo = bzrlib.repository.Repository.open(location)
except errors.NotBranchError:
print >>to_file, \
("You need to run this command "
"either from the root of a shared repository,\n"
"or from a branch.")
return 3
repo.lock_read()
try:
possible_heads = set(repo.all_revision_ids())
g = repo.get_graph().get_parent_map(possible_heads)
not_heads = set()
for parents in g.values():
not_heads.update(set(parents))
self.heads = possible_heads.difference(not_heads)
# TODO: use different sorting schemes instead of alphabetical sort
self.heads = list(self.heads)
self._print_elapsed_time('get heads:')
## mark heads as dead or alive
# mark all heads as dead
self.head_mark = {}
self.tips = {}
for head in self.heads:
self.head_mark[head] = 'dead'
# give the list of live branches in repository or current branch
# tip
self._iter_branches_update_marks(repo, self.outf.encoding)
self._print_elapsed_time('make head marks:')
if tips:
heads_tips = set(self.heads)
heads_tips.update(set(self.tips.keys()))
self.heads = list(heads_tips)
head_revisions = dict(zip(self.heads,
repo.get_revisions(self.heads)))
# sorting by date
if by_date:
dates = {}
for head in self.heads:
rev = head_revisions[head]
timestamp = rev.timestamp
dates[timestamp] = head
keys = dates.keys()
keys.sort()
keys.reverse()
self.heads = []
for k in keys:
self.heads.append(dates[k])
self._print_elapsed_time('sort by date:')
# show time
indent = ' '*2
show_timezone = 'original'
for head in self.heads:
mark = self.head_mark[head]
if not all:
if dead_only:
if mark != 'dead':
continue
else:
if mark != 'alive':
if not tips or mark != 'tip':
continue
# tips
if mark in ('alive', 'tip'):
t = self.tips[head]
if len(t) > 1:
print >>to_file, 'TIP of branches:',
print >>to_file, '[', ', '.join(t), ']'
else:
print >>to_file, 'TIP of branch:', t[0]
if mark in ('alive', 'dead'):
print >>to_file, 'HEAD:',
print >>to_file, "revision-id:", head,
if mark == 'dead': print >>to_file, '(dead)'
else: print >>to_file
rev = head_revisions[head]
# borrowed from LongLogFormatter
print >>to_file, indent+'committer:', rev.committer
try:
print >>to_file, indent+'branch nick: %s' % \
rev.properties['branch-nick']
except KeyError:
pass
date_str = format_date(rev.timestamp,
rev.timezone or 0,
show_timezone)
print >>to_file, indent+'timestamp: %s' % date_str
print >>to_file, indent+'message:'
if not rev.message:
print >>to_file, indent+' (no message)'
else:
message = rev.message.rstrip('\r\n')
for l in message.split('\n'):
print >>to_file, indent+' ' + l
self._print_elapsed_time('print head:')
print
if not self.heads:
print >>to_file, 'No heads found'
return 1
finally:
repo.unlock()
def _iter_branches_update_marks(self, repo, encoding):
for b in repo.find_branches(using=True):
last_revid = b.last_revision()
if last_revid in self.heads:
self.head_mark[last_revid] = 'alive'
else:
self.head_mark[last_revid] = 'tip'
escaped = unescape_for_display(b.base, encoding)
self.tips.setdefault(last_revid, []).append(escaped)
def _init_elapsed_time(self, debug_time=False):
self.debug_time = debug_time
if debug_time:
self._time = time.time()
def _print_elapsed_time(self, msg):
if self.debug_time:
last_time = time.time()
print msg, last_time - self._time
self._time = last_time
#/class cmd_heads
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