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#!/usr/bin/python
from patches import parse_patches
import os
import sys
import string
import tty, termios
import glob
from bzrlib.commands import Command
def main(args):
name = os.path.basename(args.pop(0))
if name not in ['shelve', 'unshelve']:
raise Exception("Unknown command name '%s'" % name)
if len(args) > 0:
if args[0] == '--bzr-usage':
print '\n'
return 0
elif args[0] == '--bzr-help':
print 'Shelve a patch, you can get it back later with unshelve.'
return 0
else:
raise Exception("Don't understand args %s" % args)
if eval(name + "()"):
return 0
return 1
def tree_root():
return run_bzr('root')[0].strip()
def shelf_suffix(index):
if index == 0:
return ""
else:
return "-%d" % index
def next_shelf():
def name_sequence():
i = 0
while True:
yield shelf_suffix(i)
i = i + 1
stem = os.path.join(tree_root(), '.bzr-shelf')
for end in name_sequence():
name = stem + end
if not os.path.exists(name):
return name
def last_shelf():
stem = os.path.join(tree_root(), '.bzr-shelf')
shelves = glob.glob(stem)
shelves.extend(glob.glob(stem + '-*'))
def shelf_index(name):
if name == stem:
return 0
return int(name[len(stem)+1:])
shelvenums = [shelf_index(f) for f in shelves]
shelvenums.sort()
if len(shelvenums) == 0:
return None
return stem + shelf_suffix(shelvenums[-1])
def get_shelf_message(shelf):
prefix = "# shelf: "
if not shelf.startswith(prefix):
return None
return shelf[len(prefix):shelf.index('\n')]
def unshelve():
shelf = last_shelf()
if shelf is None:
raise Exception("No shelf found in '%s'" % tree_root())
patch = open(shelf, 'r').read()
print >>sys.stderr, "Reapplying shelved patches",
message = get_shelf_message(patch)
if message is not None:
print >>sys.stderr, ' "%s"' % message
else:
print >>sys.stderr, ""
pipe = os.popen('patch -d %s -s -p0' % tree_root(), 'w')
pipe.write(patch)
pipe.flush()
if pipe.close() is not None:
raise Exception("Failed running patch!")
os.remove(shelf)
print 'Diff status is now:'
os.system('bzr diff | diffstat')
return True
class QuitException(Exception):
pass
def shelve(message = None, revision = None, file_list = None):
cmd = ['diff']
if revision is not None:
cmd.extend(['--revision', str(revision[0])])
if file_list is not None:
cmd.extend(file_list)
patches = parse_patches(run_bzr(cmd))
try:
patches = HunkSelector(patches).select()
except QuitException:
return False
if len(patches) == 0:
print >>sys.stderr, 'Nothing to shelve'
return True
shelf = next_shelf()
print >>sys.stderr, "Saving shelved patches to", shelf
shelf = open(shelf, 'a')
if message is not None:
assert '\n' not in message
shelf.write("# shelf: %s\n" % message)
for patch in patches:
shelf.write(str(patch))
shelf.flush()
os.fsync(shelf.fileno())
shelf.close()
print >>sys.stderr, "Reverting shelved patches"
pipe = os.popen('patch -d %s -sR -p0' % tree_root(), 'w')
for patch in patches:
pipe.write(str(patch))
pipe.flush()
if pipe.close() is not None:
raise Exception("Failed running patch!")
print 'Diff status is now:'
os.system('bzr diff | diffstat')
return True
def run_bzr(args):
if type(args) is str:
args = [ args ]
pipe = os.popen('bzr %s' % string.join(args, ' '), 'r')
lines = pipe.readlines()
if pipe.close() is not None:
raise Exception("Failed running bzr")
return lines
class cmd_shelve(Command):
"""Temporarily remove some changes from the current tree.
Use 'unshelve' to restore these changes.
If filenames are specified, only changes to those files will be unshelved.
If a revision is specified, all changes since that revision will may be
unshelved.
"""
takes_args = ['file*']
takes_options = ['message', 'revision']
def run(self, file_list=None, message=None, revision=None):
return shelve(message=message, file_list=file_list, revision=revision)
class cmd_unshelve(Command):
"""Restore previously-shelved changes to the current tree.
See also 'shelve'.
"""
def run(self):
return unshelve()
class HunkSelector:
class Option:
def __init__(self, char, action, help, default=False):
self.char = char
self.action = action
self.default = default
self.help = help
standard_options = [
Option('n', 'shelve', 'shelve this change for the moment.',
default=True),
Option('y', 'keep', 'keep this change in your tree.'),
Option('d', 'done', 'done, skip to the end.'),
Option('i', 'invert', 'invert the current selection of all hunks.'),
Option('s', 'status', 'show status of hunks.'),
Option('q', 'quit', 'quit')
]
end_options = [
Option('y', 'continue', 'proceed to shelve selected changes.',
default=True),
Option('r', 'restart', 'restart the hunk selection loop.'),
Option('s', 'status', 'show status of hunks.'),
Option('i', 'invert', 'invert the current selection of all hunks.'),
Option('q', 'quit', 'quit')
]
def __init__(self, patches):
self.patches = patches
self.total_hunks = 0
for patch in patches:
for hunk in patch.hunks:
# everything's shelved by default
hunk.selected = True
self.total_hunks += 1
def __get_option(self, char):
for opt in self.standard_options:
if opt.char == char:
return opt
raise Exception('Option "%s" not found!' % char)
def __select_loop(self):
j = 0
for patch in self.patches:
i = 0
lasti = -1
while i < len(patch.hunks):
hunk = patch.hunks[i]
if lasti != i:
print patch.get_header(), hunk
j += 1
lasti = i
prompt = 'Keep this change? (%d of %d)' \
% (j, self.total_hunks)
if hunk.selected:
self.__get_option('n').default = True
self.__get_option('y').default = False
else:
self.__get_option('n').default = False
self.__get_option('y').default = True
action = self.__ask_user(prompt, self.standard_options)
if action == 'keep':
hunk.selected = False
elif action == 'shelve':
hunk.selected = True
elif action == 'done':
return True
elif action == 'invert':
self.__invert_selection()
self.__show_status()
continue
elif action == 'status':
self.__show_status()
continue
elif action == 'quit':
return False
i += 1
return True
def select(self):
if self.total_hunks == 0:
return []
done = False
while not done:
if not self.__select_loop():
return []
while True:
self.__show_status()
prompt = "Shelve these changes, or restart?"
action = self.__ask_user(prompt, self.end_options)
if action == 'continue':
done = True
break
elif action == 'quit':
return []
elif action == 'status':
self.__show_status()
elif action == 'invert':
self.__invert_selection()
elif action == 'restart':
break
for patch in self.patches:
tmp = []
for hunk in patch.hunks:
if hunk.selected:
tmp.append(hunk)
patch.hunks = tmp
tmp = []
for patch in self.patches:
if len(patch.hunks):
tmp.append(patch)
self.patches = tmp
return self.patches
def __invert_selection(self):
for patch in self.patches:
for hunk in patch.hunks:
if hunk.__dict__.has_key('selected'):
hunk.selected = not hunk.selected
else:
hunk.selected = True
def __show_status(self):
print '\nStatus:'
for patch in self.patches:
print ' %s' % patch.oldname
shelve = 0
keep = 0
for hunk in patch.hunks:
if hunk.selected:
shelve += 1
else:
keep += 1
print ' %d hunks to be shelved' % shelve
print ' %d hunks to be kept' % keep
print
def __getchar(self):
fd = sys.stdin.fileno()
settings = termios.tcgetattr(fd)
try:
tty.setraw(fd)
ch = sys.stdin.read(1)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
return ch
def __ask_user(self, prompt, options):
while True:
sys.stdout.write(prompt)
sys.stdout.write(' [')
for opt in options:
if opt.default:
default = opt
sys.stdout.write(opt.char)
sys.stdout.write('?] (%s): ' % default.char)
response = self.__getchar()
# default, which we see as newline, is 'n'
if response in ['\n', '\r', '\r\n']:
response = default.char
print response # because echo is off
for opt in options:
if opt.char == response:
return opt.action
for opt in options:
print ' %s - %s' % (opt.char, opt.help)
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