Mercurial > hg
view mercurial/help.py @ 20858:bc56ec9e64df stable
hg: introduce "wirepeersetupfuncs" to setup wire peer by extensions (issue4109)
Since changeset 6f72e7d28b35, "reposetup()" of each extensions is
invoked only on repositories enabling corresponded extensions.
This causes that largefiles specific interactions between the
repository enabling largefiles locally and remote (wire) peer fail,
because there is no way to know whether largefiles is enabled on the
remote repository behind the wire peer, and largefiles specific
"wireproto functions" are not given to any wire peers.
To avoid this problem, largefiles should be enabled in wider scope
than each repositories (e.g. user-wide "${HOME}/.hgrc").
This patch introduces "wirepeersetupfuncs" to setup wire peer by
extensions already enabled. Functions registered into
"wirepeersetupfuncs" are invoked for all wire peers.
This patch uses plain list instead of "util.hooks" for
"wirepeersetupfuncs", because the former allows to control order of
function invocation by order of extension enabling: it may be useful
for workaround of problems with combination of enabled extensions
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
---|---|
date | Sat, 29 Mar 2014 01:20:07 +0900 |
parents | 1e5b38a919dd |
children | 02c303f64917 |
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# 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 or any later version. from i18n import gettext, _ import itertools, sys, os import error import extensions, revset, fileset, templatekw, templatefilters, filemerge import encoding, util, minirst import cmdutil def listexts(header, exts, indent=1): '''return a text listing of the given extensions''' rst = [] if exts: rst.append('\n%s\n\n' % header) for name, desc in sorted(exts.iteritems()): rst.append('%s:%s: %s\n' % (' ' * indent, name, desc)) return rst def extshelp(): rst = loaddoc('extensions')().splitlines(True) rst.extend(listexts(_('enabled extensions:'), extensions.enabled())) rst.extend(listexts(_('disabled extensions:'), extensions.disabled())) doc = ''.join(rst) return doc def optrst(options, verbose): data = [] multioccur = False for option in options: if len(option) == 5: shortopt, longopt, default, desc, optlabel = option else: shortopt, longopt, default, desc = option optlabel = _("VALUE") # default label if _("DEPRECATED") in desc and not verbose: continue so = '' if shortopt: so = '-' + shortopt lo = '--' + longopt if default: desc += _(" (default: %s)") % default if isinstance(default, list): lo += " %s [+]" % optlabel multioccur = True elif (default is not None) and not isinstance(default, bool): lo += " %s" % optlabel data.append((so, lo, desc)) rst = minirst.maketable(data, 1) if multioccur: rst.append(_("\n[+] marked option can be specified multiple times\n")) return ''.join(rst) def indicateomitted(rst, omitted, notomitted=None): rst.append('\n\n.. container:: omitted\n\n %s\n\n' % omitted) if notomitted: rst.append('\n\n.. container:: notomitted\n\n %s\n\n' % notomitted) def topicmatch(kw): """Return help topics matching kw. Returns {'section': [(name, summary), ...], ...} where section is one of topics, commands, extensions, or extensioncommands. """ kw = encoding.lower(kw) def lowercontains(container): return kw in encoding.lower(container) # translated in helptable results = {'topics': [], 'commands': [], 'extensions': [], 'extensioncommands': [], } for names, header, doc in helptable: if (sum(map(lowercontains, names)) or lowercontains(header) or lowercontains(doc())): results['topics'].append((names[0], header)) import commands # avoid cycle for cmd, entry in commands.table.iteritems(): if cmd.startswith('debug'): continue if len(entry) == 3: summary = entry[2] else: summary = '' # translate docs *before* searching there docs = _(getattr(entry[0], '__doc__', None)) or '' if kw in cmd or lowercontains(summary) or lowercontains(docs): doclines = docs.splitlines() if doclines: summary = doclines[0] cmdname = cmd.split('|')[0].lstrip('^') results['commands'].append((cmdname, summary)) for name, docs in itertools.chain( extensions.enabled(False).iteritems(), extensions.disabled().iteritems()): # extensions.load ignores the UI argument mod = extensions.load(None, name, '') name = name.split('.')[-1] if lowercontains(name) or lowercontains(docs): # extension docs are already translated results['extensions'].append((name, docs.splitlines()[0])) for cmd, entry in getattr(mod, 'cmdtable', {}).iteritems(): if kw in cmd or (len(entry) > 2 and lowercontains(entry[2])): cmdname = cmd.split('|')[0].lstrip('^') if entry[0].__doc__: cmddoc = gettext(entry[0].__doc__).splitlines()[0] else: cmddoc = _('(no help text available)') results['extensioncommands'].append((cmdname, cmddoc)) return results def loaddoc(topic): """Return a delayed loader for help/topic.txt.""" def loader(): if util.mainfrozen(): 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") doc = gettext(util.readfile(path)) for rewriter in helphooks.get(topic, []): doc = rewriter(topic, doc) return doc return loader helptable = sorted([ (["config", "hgrc"], _("Configuration Files"), loaddoc('config')), (["dates"], _("Date Formats"), loaddoc('dates')), (["patterns"], _("File Name Patterns"), loaddoc('patterns')), (['environment', 'env'], _('Environment Variables'), loaddoc('environment')), (['revisions', 'revs'], _('Specifying Single Revisions'), loaddoc('revisions')), (['multirevs', 'mrevs'], _('Specifying Multiple Revisions'), loaddoc('multirevs')), (['revsets', 'revset'], _("Specifying Revision Sets"), loaddoc('revsets')), (['filesets', 'fileset'], _("Specifying File Sets"), loaddoc('filesets')), (['diffs'], _('Diff Formats'), loaddoc('diffs')), (['merge-tools', 'mergetools'], _('Merge Tools'), loaddoc('merge-tools')), (['templating', 'templates', 'template', 'style'], _('Template Usage'), loaddoc('templates')), (['urls'], _('URL Paths'), loaddoc('urls')), (["extensions"], _("Using Additional Features"), extshelp), (["subrepos", "subrepo"], _("Subrepositories"), loaddoc('subrepos')), (["hgweb"], _("Configuring hgweb"), loaddoc('hgweb')), (["glossary"], _("Glossary"), loaddoc('glossary')), (["hgignore", "ignore"], _("Syntax for Mercurial Ignore Files"), loaddoc('hgignore')), (["phases"], _("Working with Phases"), loaddoc('phases')), ]) # Map topics to lists of callable taking the current topic help and # returning the updated version helphooks = {} def addtopichook(topic, rewriter): helphooks.setdefault(topic, []).append(rewriter) def makeitemsdoc(topic, doc, marker, items): """Extract docstring from the items key to function mapping, build a .single documentation block and use it to overwrite the marker in doc """ entries = [] for name in sorted(items): text = (items[name].__doc__ or '').rstrip() if not text: continue text = gettext(text) lines = text.splitlines() doclines = [(lines[0])] for l in lines[1:]: # Stop once we find some Python doctest if l.strip().startswith('>>>'): break doclines.append(' ' + l.strip()) entries.append('\n'.join(doclines)) entries = '\n\n'.join(entries) return doc.replace(marker, entries) def addtopicsymbols(topic, marker, symbols): def add(topic, doc): return makeitemsdoc(topic, doc, marker, symbols) addtopichook(topic, add) addtopicsymbols('filesets', '.. predicatesmarker', fileset.symbols) addtopicsymbols('merge-tools', '.. internaltoolsmarker', filemerge.internals) addtopicsymbols('revsets', '.. predicatesmarker', revset.symbols) addtopicsymbols('templates', '.. keywordsmarker', templatekw.dockeywords) addtopicsymbols('templates', '.. filtersmarker', templatefilters.filters) def help_(ui, name, unknowncmd=False, full=True, **opts): ''' Generate the help for 'name' as unformatted restructured text. If 'name' is None, describe the commands available. ''' import commands # avoid cycle def helpcmd(name): try: aliases, entry = cmdutil.findcmd(name, commands.table, strict=unknowncmd) except error.AmbiguousCommand, inst: # py3k fix: except vars can't be used outside the scope of the # except block, nor can be used inside a lambda. python issue4617 prefix = inst.args[0] select = lambda c: c.lstrip('^').startswith(prefix) rst = helplist(select) return rst rst = [] # check if it's an invalid alias and display its error if it is if getattr(entry[0], 'badalias', False): if not unknowncmd: ui.pushbuffer() entry[0](ui) rst.append(ui.popbuffer()) return rst # synopsis if len(entry) > 2: if entry[2].startswith('hg'): rst.append("%s\n" % entry[2]) else: rst.append('hg %s %s\n' % (aliases[0], entry[2])) else: rst.append('hg %s\n' % aliases[0]) # aliases if full and not ui.quiet and len(aliases) > 1: rst.append(_("\naliases: %s\n") % ', '.join(aliases[1:])) rst.append('\n') # description doc = gettext(entry[0].__doc__) if not doc: doc = _("(no help text available)") if util.safehasattr(entry[0], 'definition'): # aliased command if entry[0].definition.startswith('!'): # shell alias doc = _('shell alias for::\n\n %s') % entry[0].definition[1:] else: doc = _('alias for: hg %s\n\n%s') % (entry[0].definition, doc) doc = doc.splitlines(True) if ui.quiet or not full: rst.append(doc[0]) else: rst.extend(doc) rst.append('\n') # check if this command shadows a non-trivial (multi-line) # extension help text try: mod = extensions.find(name) doc = gettext(mod.__doc__) or '' if '\n' in doc.strip(): msg = _('use "hg help -e %s" to show help for ' 'the %s extension') % (name, name) rst.append('\n%s\n' % msg) except KeyError: pass # options if not ui.quiet and entry[1]: rst.append('\n%s\n\n' % _("options:")) rst.append(optrst(entry[1], ui.verbose)) if ui.verbose: rst.append('\n%s\n\n' % _("global options:")) rst.append(optrst(commands.globalopts, ui.verbose)) if not ui.verbose: if not full: rst.append(_('\nuse "hg help %s" to show the full help text\n') % name) elif not ui.quiet: omitted = _('use "hg -v help %s" to show more complete' ' help and the global options') % name notomitted = _('use "hg -v help %s" to show' ' the global options') % name indicateomitted(rst, omitted, notomitted) return rst def helplist(select=None): # list of commands if name == "shortlist": header = _('basic commands:\n\n') else: header = _('list of commands:\n\n') h = {} cmds = {} for c, e in commands.table.iteritems(): f = c.split("|", 1)[0] if select and not select(f): continue if (not select and name != 'shortlist' and e[0].__module__ != commands.__name__): continue if name == "shortlist" and not f.startswith("^"): continue f = f.lstrip("^") if not ui.debugflag and f.startswith("debug"): continue doc = e[0].__doc__ if doc and 'DEPRECATED' in doc and not ui.verbose: continue doc = gettext(doc) if not doc: doc = _("(no help text available)") h[f] = doc.splitlines()[0].rstrip() cmds[f] = c.lstrip("^") rst = [] if not h: if not ui.quiet: rst.append(_('no commands defined\n')) return rst if not ui.quiet: rst.append(header) fns = sorted(h) for f in fns: if ui.verbose: commacmds = cmds[f].replace("|",", ") rst.append(" :%s: %s\n" % (commacmds, h[f])) else: rst.append(' :%s: %s\n' % (f, h[f])) if not name: exts = listexts(_('enabled extensions:'), extensions.enabled()) if exts: rst.append('\n') rst.extend(exts) rst.append(_("\nadditional help topics:\n\n")) topics = [] for names, header, doc in helptable: topics.append((names[0], header)) for t, desc in topics: rst.append(" :%s: %s\n" % (t, desc)) optlist = [] if not ui.quiet: if ui.verbose: optlist.append((_("global options:"), commands.globalopts)) if name == 'shortlist': optlist.append((_('use "hg help" for the full list ' 'of commands'), ())) else: if name == 'shortlist': msg = _('use "hg help" for the full list of commands ' 'or "hg -v" for details') elif name and not full: msg = _('use "hg help %s" to show the full help ' 'text') % name else: msg = _('use "hg -v help%s" to show builtin aliases and ' 'global options') % (name and " " + name or "") optlist.append((msg, ())) if optlist: for title, options in optlist: rst.append('\n%s\n' % title) if options: rst.append('\n%s\n' % optrst(options, ui.verbose)) return rst def helptopic(name): for names, header, doc in helptable: if name in names: break else: raise error.UnknownCommand(name) rst = [minirst.section(header)] # description if not doc: rst.append(" %s\n" % _("(no help text available)")) if util.safehasattr(doc, '__call__'): rst += [" %s\n" % l for l in doc().splitlines()] if not ui.verbose: omitted = (_('use "hg help -v %s" to show more complete help') % name) indicateomitted(rst, omitted) try: cmdutil.findcmd(name, commands.table) rst.append(_('\nuse "hg help -c %s" to see help for ' 'the %s command\n') % (name, name)) except error.UnknownCommand: pass return rst def helpext(name): try: mod = extensions.find(name) doc = gettext(mod.__doc__) or _('no help text available') except KeyError: mod = None doc = extensions.disabledext(name) if not doc: raise error.UnknownCommand(name) if '\n' not in doc: head, tail = doc, "" else: head, tail = doc.split('\n', 1) rst = [_('%s extension - %s\n\n') % (name.split('.')[-1], head)] if tail: rst.extend(tail.splitlines(True)) rst.append('\n') if not ui.verbose: omitted = (_('use "hg help -v %s" to show more complete help') % name) indicateomitted(rst, omitted) if mod: try: ct = mod.cmdtable except AttributeError: ct = {} modcmds = set([c.split('|', 1)[0] for c in ct]) rst.extend(helplist(modcmds.__contains__)) else: rst.append(_('use "hg help extensions" for information on enabling ' 'extensions\n')) return rst def helpextcmd(name): cmd, ext, mod = extensions.disabledcmd(ui, name, ui.configbool('ui', 'strict')) doc = gettext(mod.__doc__).splitlines()[0] rst = listexts(_("'%s' is provided by the following " "extension:") % cmd, {ext: doc}, indent=4) rst.append('\n') rst.append(_('use "hg help extensions" for information on enabling ' 'extensions\n')) return rst rst = [] kw = opts.get('keyword') if kw: matches = topicmatch(kw) for t, title in (('topics', _('Topics')), ('commands', _('Commands')), ('extensions', _('Extensions')), ('extensioncommands', _('Extension Commands'))): if matches[t]: rst.append('%s:\n\n' % title) rst.extend(minirst.maketable(sorted(matches[t]), 1)) rst.append('\n') elif name and name != 'shortlist': i = None if unknowncmd: queries = (helpextcmd,) elif opts.get('extension'): queries = (helpext,) elif opts.get('command'): queries = (helpcmd,) else: queries = (helptopic, helpcmd, helpext, helpextcmd) for f in queries: try: rst = f(name) i = None break except error.UnknownCommand, inst: i = inst if i: raise i else: # program name if not ui.quiet: rst = [_("Mercurial Distributed SCM\n"), '\n'] rst.extend(helplist()) return ''.join(rst)