# help.py - help data for mercurial
#
# Copyright 2006 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.
from i18n import gettext, _
import sys, os
import extensions, util
def moduledoc(file):
'''return the top-level python documentation for the given file
Loosely inspired by pydoc.source_synopsis(), but rewritten to handle \'''
as well as """ and to return the whole text instead of just the synopsis'''
result = []
line = file.readline()
while line[:1] == '#' or not line.strip():
line = file.readline()
if not line: break
start = line[:3]
if start == '"""' or start == "'''":
line = line[3:]
while line:
if line.rstrip().endswith(start):
line = line.split(start)[0]
if line:
result.append(line)
break
elif not line:
return None # unmatched delimiter
result.append(line)
line = file.readline()
else:
return None
return ''.join(result)
def listexts(header, exts, maxlength):
'''return a text listing of the given extensions'''
if not exts:
return ''
result = '\n%s\n\n' % header
for name, desc in sorted(exts.iteritems()):
result += ' %-*s %s\n' % (maxlength + 2, ':%s:' % name, desc)
return result
def extshelp():
doc = loaddoc('extensions')()
exts, maxlength = extensions.enabled()
doc += listexts(_('enabled extensions:'), exts, maxlength)
exts, maxlength = extensions.disabled()
doc += listexts(_('disabled extensions:'), exts, maxlength)
return doc
def loaddoc(topic):
"""Return a delayed loader for help/topic.txt."""
def loader():
if hasattr(sys, 'frozen'):
module = sys.executable
else:
module = __file__
base = os.path.dirname(module)
for dir in ('.', '..'):
docdir = os.path.join(base, dir, 'help')
if os.path.isdir(docdir):
break
path = os.path.join(docdir, topic + ".txt")
return gettext(open(path).read())
return loader
helptable = (
(["dates"], _("Date Formats"), loaddoc('dates')),
(["patterns"], _("File Name Patterns"), loaddoc('patterns')),
(['environment', 'env'], _('Environment Variables'), loaddoc('environment')),
(['revs', 'revisions'], _('Specifying Single Revisions'), loaddoc('revisions')),
(['mrevs', 'multirevs'], _('Specifying Multiple Revisions'), loaddoc('multirevs')),
(['diffs'], _('Diff Formats'), loaddoc('diffs')),
(['templating', 'templates'], _('Template Usage'), loaddoc('templates')),
(['urls'], _('URL Paths'), loaddoc('urls')),
(["extensions"], _("Using additional features"), extshelp),
)