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