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# Copyright (C) 2004, 2005, 2006 by Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# TODO: Some way to get a list of external commands (defined by shell
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# scripts) so that they can be included in the help listing as well.
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# It should be enough to just list the plugin directory and look for
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# executable files with reasonable names.
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# TODO: `help commands --all` should show hidden commands
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"""Bazaar-NG -- a free distributed version-control tool
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bzr init makes this directory a versioned branch
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bzr branch make a copy of another branch
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bzr add make files or directories versioned
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bzr ignore ignore a file or pattern
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bzr mv move or rename a versioned file
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bzr status summarize changes in working copy
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bzr diff show detailed diffs
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bzr merge pull in changes from another branch
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bzr commit save some or all changes
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bzr log show history of changes
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bzr check validate storage
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bzr help init more help on e.g. init command
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bzr help commands list all commands
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def help(topic=None, outfile = None):
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outfile.write(global_help)
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elif topic == 'commands':
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help_commands(outfile = outfile)
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help_on_command(topic, outfile = outfile)
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def command_usage(cmd_object):
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"""Return single-line grammar for command.
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Only describes arguments, not options.
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s = 'bzr ' + cmd_object.name() + ' '
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for aname in cmd_object.takes_args:
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if aname[-1] in ['$', '+']:
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aname = aname[:-1] + '...'
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elif aname[-1] == '?':
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aname = '[' + aname[:-1] + ']'
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elif aname[-1] == '*':
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aname = '[' + aname[:-1] + '...]'
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def help_on_command(cmdname, outfile=None):
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from bzrlib.commands import get_cmd_object
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cmdname = str(cmdname)
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cmd_object = get_cmd_object(cmdname)
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doc = cmd_object.help()
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raise NotImplementedError("sorry, no detailed help yet for %r" % cmdname)
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print >>outfile, 'usage:', command_usage(cmd_object)
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if cmd_object.aliases:
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print >>outfile, 'aliases:',
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print >>outfile, ', '.join(cmd_object.aliases)
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help_on_command_options(cmd_object, outfile)
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def help_on_command_options(cmd, outfile=None):
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from bzrlib.option import Option
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options = cmd.options()
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outfile.write('\noptions:\n')
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for option_name, option in sorted(options.items()):
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l = ' --' + option_name
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if option.type is not None:
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l += ' ' + option.argname.upper()
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short_name = option.short_name()
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assert len(short_name) == 1
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l += ', -' + short_name
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l += (30 - len(l)) * ' ' + option.help
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# TODO: split help over multiple lines with correct indenting and
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wrapped = textwrap.fill(l, initial_indent='', subsequent_indent=30*' ')
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outfile.write(wrapped + '\n')
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def help_commands(outfile=None):
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"""List all commands"""
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from bzrlib.commands import (builtin_command_names,
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plugin_command_names,
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names = set() # to eliminate duplicates
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names.update(builtin_command_names())
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names.update(plugin_command_names())
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for cmd_name in names:
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cmd_object = get_cmd_object(cmd_name)
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if cmd_object.hidden:
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print >>outfile, command_usage(cmd_object)
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cmd_help = cmd_object.help()
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firstline = cmd_help.split('\n', 1)[0]
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print >>outfile, ' ' + firstline
added
removed
bzrlib/help.py
