40
42
def print_usage( self, error_message ):
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suffix = ' ' + the.command if the.command else ''
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command = ' ' + the.command if the.command else ''
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self.die( error_message + \
43
45
"\nTry '%s%s --help' for more information." % \
44
( self.name, suffix ) )
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( self.name, command ) )
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49
def print_help( self ):
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50
print "Usage: " + self.name + " COMMAND [OPTION]..."
50
52
# 01234567890123456789012345678901234567890123456789012345678901234567890123456789
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print "Manage your home directories, across multiple computers, similar to how you"
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print "would software under version control."
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print "Tool to manage a set of files in your home directory and distribute them across"
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print "multiple computers, merging local changes (in the same way as you would manage"
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print "source code under version control)."
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print "Global options (for all commands):"
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print " --help display help and exit"
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print " update update files in your home directory"
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print " resolve try to finish an update (that had conflicts)"
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print " add add local files/changes to the repository"
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print " remove remove a local file from the repository"
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print " revert undo changes made to a local file"
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print " stage-add stage local files/changes"
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print " stage-remove stage the removal of files"
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print " stage-revert revert staged changes"
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print " stage-status show status of staging area"
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print " stage-commit commit staged changes to repository"
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# print " remove remove a local file from the repository"
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print " status list files that have changed locally"
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print " diff shows changes made to local files"
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print " revert undo changes made to local files"
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# print " stage-add add (but don't commit) files/changes to local repository"
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# print " stage-remove delete *but don't comit) files from the local repository"
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print " stage-revert revert changes in the local repository"
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# print " stage-status show status of local repository"
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# print " stage-diff shows changes in local repository"
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# print " stage-commit commit changes in the local repository"
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77
print "For help about a particular command (including the additional options that the"
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print "command accepts) try typing:"
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83
def print_version( self ):
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print "stdhome " + self.version
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print "Copyright (C) 2013 Tim Marston"
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print "Copyright (C) 2013 to 2014 Tim Marston"
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# 01234567890123456789012345678901234567890123456789012345678901234567890123456789
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print "This program is free software, and you may use, modify and redistribute it"
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100
def check_command( self, command ):
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Check that the given command is valid and return the full name of the command.
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- `command`: the given command
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"""Check that the given command is valid and return the full name of the
104
@param command the given command
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if [ 'init', 'update', 'resolve', 'add', 'remove', 'revert',
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'stage-add', 'stage-remove', 'stage-revert', 'stage-status',
104
'stage-commit' ].count( command ) == 1:
108
if [ 'init', 'update', 'resolve', 'add', 'remove', 'revert', 'status',
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'diff', 'stage-add', 'stage-remove', 'stage-revert',
110
'stage-status', 'stage-diff', 'stage-commit'
111
].count( command ) == 1:
107
114
# resolve aliases
108
elif command == 'up':
110
elif command == 'rm':
120
}.get( command, False )
121
if alias: return alias
118
127
def get_command_argument( self, args ):
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"""Find the first program argument what isn't an option argument.
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@param args the program arguments
120
Find the first program argument what isn't an option argument.
123
- `args`: the program arguments
126
134
if args[ 0 ] == '--':
127
135
return args[ 1 ] if len( args ) > 1 else None
135
143
# make an initial attempt to parse the command line, looking only for
136
# --help and --version, so that they have the chance to run without a
137
# command being specified
144
# --help, --version and --verbose, so that they have the chance to run
145
# without a command being specified
139
147
opts, args = getopt.gnu_getopt(
141
[ "help", "version" ] )
149
[ "verbose", "help", "version" ] )
143
151
for opt, optarg in opts:
144
152
# we only show help if there are no non-option arguments (e.g.,
145
153
# a command) specified. If a command has been specified it will
146
154
# have to be parsed and --help will be handled by it, instead)
147
if opt == "--help" and len( args ) == 0:
155
if opt in [ '--verbose', '-v' ]:
157
elif opt == "--help" and len( args ) == 0:
148
158
self.print_help()
149
159
elif opt == "--version":
150
160
self.print_version()
153
163
# ignore errors -- we aren't parsing the command line properly yet
156
# find the first non-option argument (the command)
166
# read program configuration
167
the.config = Config()
169
# find the command by grabbing the first program argument that doesn't
170
# look like an option (note: the first argument that doesn't look like
171
# an option may actually be an argument to an option, so this is far
172
# from perfect, but, provided the user is mindful, this is preferable to
173
# forcing the user to always specify options after the command)
157
174
the.command = self.get_command_argument( sys.argv[ 1: ] )
158
175
if the.command == None:
159
176
self.print_usage( "missing command" )
163
180
if the.command == None:
164
181
self.print_usage( "bad command" )
166
# calculate class name
183
# calculate module and class name
184
class_name = module_name = ''
167
185
bits = the.command.split( '-' )
168
class_name = 'Command'
170
187
class_name += bit[ 0 ].upper() + bit[ 1 : ]
188
if module_name: module_name += '_'
190
class_name += 'Command'
172
# instantiate the command class
173
module = __import__( 'stdhome.command_' + the.command,
192
# import module and instantiate the class
193
module = __import__( 'stdhome.command.' + module_name,
174
194
fromlist = [ class_name ] )
175
195
instance = getattr( module, class_name )()
197
# fully parse the command line, as per the command
179
199
instance.parse_command_line()
200
except( getopt.GetoptError, self.UsageError ) as e:
201
self.print_usage( e.msg )
202
except self.FatalError as e:
205
# do late initialisation
181
except ( getopt.GetoptError, self.UsageError ) as e:
182
self.print_usage( e.msg )
183
except self.FatalError as e:
185
if the.verbose and e.output:
186
message += '\n\nOUTPUT:\n' + e.output
211
except Vcs.VcsError as e:
212
message = e.msg.rstrip()
214
message += '\n\nOUTPUT:\n' + e.output.rstrip()
187
215
self.die( message )
216
except self.FatalError as e:
190
220
class UsageError( Exception ):
196
226
class FatalError( Exception ):
198
def __init__( self, message, output = None ):
228
def __init__( self, message ):
199
229
self.msg = message