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"""
For branches that have been closed but still have a dangling head
in 'hg heads --topo --closed', force them to join with the branch
called 'closed-branch'. It reduces the number of heads.
"""
import os
import sys
import commands
if not os.path.isdir('.hg'):
print 'Must run this script from the top-level directory.'
sys.exit(1)
def heads():
result = commands.getoutput(
"hg heads --topo --closed --template '{node|short}:{branches}:{extras}\n'")
result = result.splitlines(False)
result = [s.split(':', 2) for s in result]
for line in result:
if len(line) != 3:
raise ValueError("'result' contains: %r" % line)
result = [(head, branch or 'default') for (head, branch, extra) in result
if branch != 'closed-branches' and 'close=1' in extra]
return result
closed_heads = heads()
if not closed_heads:
print >> sys.stderr, 'no dangling closed heads.'
sys.exit()
# ____________________________________________________________
closed_heads.reverse()
for head, branch in closed_heads:
print '\t', head, '\t', branch
print
print 'The %d branches listed above will be merged to "closed-branches".' % (
len(closed_heads),)
print 'You need to run this script in a clean working copy where you'
print 'don''t mind all files being removed.'
print
if raw_input('Continue? [y/n] ').upper() != 'Y':
sys.exit(1)
# ____________________________________________________________
def do(cmd):
print cmd
err = os.system(cmd)
if err != 0:
print '*** error %r' % (err,)
sys.exit(1)
print '*** switching to closed branches *** '
do("hg up --clean closed-branches")
do("hg --config extensions.purge= purge --all")
for head, branch in closed_heads:
print
print '***** %s ***** %s *****' % (branch, head)
do("hg debugsetparents closed-branches %s" % head)
do("hg ci -m'Merge closed head %s on branch %s'" % (head, branch))
print
do("hg ci --close-branch -m're-close this branch'")
do("hg up default")
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