1
# Copyright (C) 2004, 2005, 2006 by Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
# TODO: Some way to get a list of external commands (defined by shell
18
# scripts) so that they can be included in the help listing as well.
19
# It should be enough to just list the plugin directory and look for
20
# executable files with reasonable names.
22
# TODO: `help commands --all` should show hidden commands
24
from bzrlib import osutils
27
"""Bazaar -- a free distributed version-control tool
28
http://bazaar-vcs.org/
32
bzr init makes this directory a versioned branch
33
bzr branch make a copy of another branch
35
bzr add make files or directories versioned
36
bzr ignore ignore a file or pattern
37
bzr mv move or rename a versioned file
39
bzr status summarize changes in working copy
40
bzr diff show detailed diffs
42
bzr merge pull in changes from another branch
43
bzr commit save some or all changes
45
bzr log show history of changes
46
bzr check validate storage
48
bzr help init more help on e.g. init command
49
bzr help commands list all commands
56
def help(topic=None, outfile = None):
60
outfile.write(global_help)
61
elif topic == 'commands':
62
help_commands(outfile = outfile)
64
help_on_command(topic, outfile = outfile)
67
def command_usage(cmd_object):
68
"""Return single-line grammar for command.
70
Only describes arguments, not options.
72
s = 'bzr ' + cmd_object.name() + ' '
73
for aname in cmd_object.takes_args:
75
if aname[-1] in ['$', '+']:
76
aname = aname[:-1] + '...'
77
elif aname[-1] == '?':
78
aname = '[' + aname[:-1] + ']'
79
elif aname[-1] == '*':
80
aname = '[' + aname[:-1] + '...]'
89
def print_command_plugin(cmd_object, outfile, format):
90
"""Print the plugin that provides a command object, if any.
92
If the cmd_object is provided by a plugin, prints the plugin name to
93
outfile using the provided format string.
95
plugin_name = cmd_object.plugin_name()
96
if plugin_name is not None:
97
out_str = '(From plugin "%s")' % plugin_name
98
outfile.write(format % out_str)
101
def help_on_command(cmdname, outfile=None):
102
from bzrlib.commands import get_cmd_object
104
cmdname = str(cmdname)
109
cmd_object = get_cmd_object(cmdname)
111
doc = cmd_object.help()
113
raise NotImplementedError("sorry, no detailed help yet for %r" % cmdname)
115
print >>outfile, 'usage:', command_usage(cmd_object)
117
if cmd_object.aliases:
118
print >>outfile, 'aliases:',
119
print >>outfile, ', '.join(cmd_object.aliases)
123
print_command_plugin(cmd_object, outfile, '%s\n\n')
128
help_on_command_options(cmd_object, outfile)
131
def help_on_command_options(cmd, outfile=None):
132
from bzrlib.option import Option, get_optparser
135
options = cmd.options()
137
outfile.write(get_optparser(options).format_option_help())
140
def help_commands(outfile=None):
141
"""List all commands"""
142
from bzrlib.commands import (builtin_command_names,
143
plugin_command_names,
147
names = set(builtin_command_names()) # to eliminate duplicates
148
names.update(plugin_command_names())
149
commands = ((n, get_cmd_object(n)) for n in names)
150
shown_commands = [(n, o) for n, o in commands if not o.hidden]
151
max_name = max(len(n) for n, o in shown_commands)
152
indent = ' ' * (max_name + 1)
153
width = osutils.terminal_width() - 1
154
for cmd_name, cmd_object in sorted(shown_commands):
155
plugin_name = cmd_object.plugin_name()
156
if plugin_name is None:
159
plugin_name = ' [%s]' % plugin_name
161
cmd_help = cmd_object.help()
163
firstline = cmd_help.split('\n', 1)[0]
166
helpstring = '%-*s %s%s' % (max_name, cmd_name, firstline, plugin_name)
167
lines = textwrap.wrap(helpstring, subsequent_indent=indent,
170
outfile.write(line + '\n')