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# Copyright (C) 2006 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""A collection of extra help information for using bzr.
Help topics are meant to be help for items that aren't commands, but will
help bzr become fully learnable without referring to a tutorial.
"""
from bzrlib import registry
class HelpTopicRegistry(registry.Registry):
"""A Registry customized for handling help topics."""
def register(self, topic, detail, summary):
"""Register a new help topic.
:param topic: Name of documentation entry
:param detail: Function or string object providing detailed
documentation for topic. Function interface is detail(topic).
This should return a text string of the detailed information.
:param summary: String providing single-line documentation for topic.
"""
# The detail is stored as the 'object' and the
super(HelpTopicRegistry, self).register(topic, detail, info=summary)
def register_lazy(self, topic, module_name, member_name, summary):
"""Register a new help topic, and import the details on demand.
:param topic: Name of documentation entry
:param module_name: The module to find the detailed help.
:param member_name: The member of the module to use for detailed help.
:param summary: String providing single-line documentation for topic.
"""
super(HelpTopicRegistry, self).register_lazy(topic, module_name,
member_name, info=summary)
def get_detail(self, topic):
"""Get the detailed help on a given topic."""
obj = self.get(topic)
if callable(obj):
return obj(topic)
else:
return obj
def get_summary(self, topic):
"""Get the single line summary for the topic."""
return self.get_info(topic)
topic_registry = HelpTopicRegistry()
#----------------------------------------------------
def _help_on_topics(dummy):
"""Write out the help for topics to outfile"""
topics = topic_registry.keys()
lmax = max(len(topic) for topic in topics)
out = []
for topic in topics:
summary = topic_registry.get_summary(topic)
out.append("%-*s %s\n" % (lmax, topic, summary))
return ''.join(out)
def _help_on_revisionspec(name):
""""Write the summary help for all documented topics to outfile."""
import bzrlib.revisionspec
out = []
out.append("\nRevision prefix specifier:"
"\n--------------------------\n")
for i in bzrlib.revisionspec.SPEC_TYPES:
doc = i.help_txt
if doc == bzrlib.revisionspec.RevisionSpec.help_txt:
doc = "N/A\n"
while (doc[-2:] == '\n\n' or doc[-1:] == ' '):
doc = doc[:-1]
out.append(" %s %s\n\n" % (i.prefix, doc))
return ''.join(out)
_basic_help= \
"""Bazaar -- a free distributed version-control tool
http://bazaar-vcs.org/
Basic commands:
bzr init makes this directory a versioned branch
bzr branch make a copy of another branch
bzr add make files or directories versioned
bzr ignore ignore a file or pattern
bzr mv move or rename a versioned file
bzr status summarize changes in working copy
bzr diff show detailed diffs
bzr merge pull in changes from another branch
bzr commit save some or all changes
bzr log show history of changes
bzr check validate storage
bzr help init more help on e.g. init command
bzr help commands list all commands
bzr help topics list all help topics
"""
topic_registry.register("revisionspec", _help_on_revisionspec,
"Explain how to use --revision")
topic_registry.register('basic', _basic_help, "Basic commands")
topic_registry.register('topics', _help_on_topics, "Topics list")
def get_format_topic(topic):
from bzrlib import bzrdir
return bzrdir.format_registry.help_topic(topic)
topic_registry.register('formats', get_format_topic, 'Directory formats')
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