3
# Copyright (C) 2014 Tim Marston <tim@edm.am>
5
# This file is part of stdhome (hereafter referred to as "this program").
6
# See http://ed.am/dev/stdhome for more information.
8
# This program is free software: you can redistribute it and/or modify
9
# it under the terms of the GNU General Public License as published by
10
# the Free Software Foundation, either version 3 of the License, or
11
# (at your option) any later version.
13
# This program is distributed in the hope that it will be useful,
14
# but WITHOUT ANY WARRANTY; without even the implied warranty of
15
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16
# GNU General Public License for more details.
18
# You should have received a copy of the GNU General Public License
19
# along with this program. If not, see <http://www.gnu.org/licenses/>.
22
import subprocess, os, re, shutil
23
from subprocess import Popen
26
from stdhome import the
32
def __init__( self, dir ):
35
@param dir the fully-qualified directory to work in.
41
"""Create a new, empty branch
44
# the directory shouldn't exist
49
self.run( [ 'bzr', 'init', '.' ] )
50
except self.VcsError as e:
52
# attempt to clean-up dir
54
shutil.rmtree( self.dir )
61
def checkout( self, url ):
62
"""Checkout a new copy of a remote branch.
64
@param url the remote repository URL
67
# the directory shouldn't exist
72
self.run( [ 'bzr', 'checkout', url, '.' ] )
73
except self.VcsError as e:
75
# attempt to clean-up dir
77
shutil.rmtree( self.dir )
84
def get_revno( self ):
85
"""Obtain some sort of revision identifier
89
output = self.run( [ 'bzr', 'revno', '--tree' ] )
92
buf = StringIO.StringIO( output )
93
return buf.readline().rstrip()
96
def revert( self, revno = None ):
97
"""Revert the branch so that there are no outstanding changes or unknown files.
98
If a revno is supplied, then the repository is reverted to that
103
output = self.run( [ 'bzr', 'status' ] )
104
files = self.parse_file_blocks( output )
106
# remove kind changed files (or they can cause `bzr revert` to break in
107
# strange situations, like when a directory has been replaced with a
108
# symlink to a non-existant file)
109
if 'kind changed' in files:
110
for file in files[ 'kind changed' ]:
111
matches = re.match( r'(.+?)[/@+]? \([^)]+\)', file )
114
'failed to parse bzr kind change: %s' % file )
115
file = matches.group( 1 )
116
if the.verbose > 1: print "removing (kind changed): " + file
117
full_file = os.path.join( self.dir, file )
118
if os.path.isfile( full_file ) or os.path.islink( full_file ):
119
os.unlink( full_file )
120
elif os.path.isdir( full_file ):
121
shutil.rmtree( full_file )
123
raise RuntimeError( 'exotic file in repo: %s' % file )
126
self.run( [ 'bzr', 'revert', '--no-backup' ] )
129
output = self.run( [ 'bzr', 'status' ] )
130
files = self.parse_file_blocks( output )
132
# remove unknown files
133
if 'unknown' in files:
134
for file in files[ 'unknown' ]:
135
if the.verbose > 1: print "removing (unknown): " + file
136
full_file = os.path.join( self.dir, file )
137
if os.path.isfile( full_file ):
138
os.unlink( full_file )
139
elif os.path.isdir( full_file ):
140
shutil.rmtree( full_file )
142
raise RuntimeError( 'exotic file in repo: %s' % file )
144
# if a revision identifyer has been given, update to that
145
if revno is not None:
148
self.run( [ 'bzr', 'update', '-r', revno ] )
152
"""Update the branch, pulling down any upstream changes and merging them. This
153
method returns a list of the files that were modified as part of this
157
# WARNING: the following might cause bzr to ask for your ssh password more than
158
# once during an update!!!
161
# revno = self.get_revno()
163
# # update to current revision (pull in history without updating tree)
164
# self.run( [ 'bzr', 'update', '-r', revno ] )
167
# next_revno = str( int( revno ) + 1 )
168
# output = self.run( [ 'bzr', 'log', '-r', next_revno + '..' ] )
171
# keep_files = list()
172
# buf = StringIO.StringIO( output )
175
# line = line.rstrip( '\n' )
176
# if line.lower() == 'message:':
179
# if line[ : 2 ] != ' ':
184
# # process directives
185
# if line[ : 6 ].lower() == 'keep: ':
187
# if file in rename_files: file = rename_files[ file ]
188
# keep_files.append( file )
189
# elif line[ : 8 ].lower() == 'rename: ':
190
# rename_from = line[ 8 : ]
191
# elif line[ : 4 ].lower() == 'to: ':
192
# if rename_from in rename_files:
193
# rename_from = rename_files[ rename_from ]
194
# rename_files[ line[ 4 : ] ] = rename_from
196
# bzr update properly
197
output = self.run( [ 'bzr', 'update' ] )
199
# parse output (see logic in report() in bzrlib/delta.py)
201
buf = StringIO.StringIO( output )
203
if not re.search( '^[-R+ ?][K NMD!][* ] ', line ): continue
205
if the.verbose > 1: print ' %s' % line
207
# renames show before and after file names
208
matches = re.search( '^R.. (.*?)[/@+]? => (.*?)[/@+]?$', line )
210
files.append( matches.group( 1 ) )
211
files.append( matches.group( 2 ) )
214
# kind changes shows the same name twice
215
matches = re.search( '^.K. (.*?)[/@+]? => (.*?)[/@+]?$', line )
217
files.append( matches.group( 1 ) )
220
# other entries have only one filename
221
matches = re.search( '^... (.*?)[/@+]?$', line )
223
files.append( matches.group( 1 ) )
227
'failed to parse bzr update output line:\n%s' % line )
232
def has_changes( self ):
233
"""Check if the branch has any local modifications.
237
output = self.run( [ 'bzr', 'status', '--no-pending' ] )
240
files = self.parse_file_blocks( output )
241
return True if len( files ) else False
244
def get_conflicts( self ):
245
"""Return a list of files that have conflicts.
249
output = self.run( [ 'bzr', 'status', '--no-pending' ] )
252
files = self.parse_file_blocks( output )
253
return files['conflicts'] if 'conflicts' in files else None
256
def run( self, cmd ):
257
if the.verbose > 1: print 'exec: %s' % ' '.join( cmd )
258
p = Popen( cmd, cwd = self.dir,
259
stdout = subprocess.PIPE, stderr = subprocess.STDOUT )
260
output = p.communicate()[ 0 ]
262
raise self.VcsError( ' '.join( cmd[ : 2 ] ), output )
266
def parse_file_blocks( self, output ):
269
buf = StringIO.StringIO( output )
271
matches = re.search( '^([a-z ]+):$', line, re.I )
273
current = matches.group( 1 )
276
matches = re.search( '^ ([^ ].*)$', line )
278
if not current in res:
279
res[ current ] = list()
280
res[ current ].append( matches.group( 1 ) )
282
if re.search( '^[0-9]+ shel(?:f|ves) exists?', line ): continue
283
if re.search( '^working tree is out of date', line ): continue
284
raise self.ParseError( "unrecognised line: %s" % line )
288
class ParseError( Exception ):