ui: refactor `readconfig()` into a form that can consume resources
The old form can't completely go away, because files outside of packages still
need to be read. The name passed in here is a tuple of `package name, resource`
as needed by the resource API.
I like the idea of stating the config file is embedded in the executable by
listing is as `exe!package.resource`. This would be consistent with how
`debuginstall` points to the executable for the python executable, lib, and
installed modules. While in practice the filesystem path is available from the
backing ResourceReader when the resource is opened, it is a relative path on py2
and absolute on py3. Further, while this would show in the `hg config` output
for each option if set as such here, it doesn't show in the `reading from...`
line when `--debug` is used. The file isn't actually open where that prints, so
there's no way I see to get that info there. So I opted for the simple prefix
to distinguish resources from files.
Differential Revision: https://phab.mercurial-scm.org/D7775
# 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 __future__ import absolute_import
import itertools
import re
import textwrap
from .i18n import (
_,
gettext,
)
from .pycompat import getattr
from . import (
cmdutil,
encoding,
error,
extensions,
fancyopts,
filemerge,
fileset,
minirst,
pycompat,
registrar,
revset,
templatefilters,
templatefuncs,
templatekw,
ui as uimod,
util,
)
from .hgweb import webcommands
from .utils import (
compression,
resourceutil,
)
_exclkeywords = {
b"(ADVANCED)",
b"(DEPRECATED)",
b"(EXPERIMENTAL)",
# i18n: "(ADVANCED)" is a keyword, must be translated consistently
_(b"(ADVANCED)"),
# i18n: "(DEPRECATED)" is a keyword, must be translated consistently
_(b"(DEPRECATED)"),
# i18n: "(EXPERIMENTAL)" is a keyword, must be translated consistently
_(b"(EXPERIMENTAL)"),
}
# The order in which command categories will be displayed.
# Extensions with custom categories should insert them into this list
# after/before the appropriate item, rather than replacing the list or
# assuming absolute positions.
CATEGORY_ORDER = [
registrar.command.CATEGORY_REPO_CREATION,
registrar.command.CATEGORY_REMOTE_REPO_MANAGEMENT,
registrar.command.CATEGORY_COMMITTING,
registrar.command.CATEGORY_CHANGE_MANAGEMENT,
registrar.command.CATEGORY_CHANGE_ORGANIZATION,
registrar.command.CATEGORY_FILE_CONTENTS,
registrar.command.CATEGORY_CHANGE_NAVIGATION,
registrar.command.CATEGORY_WORKING_DIRECTORY,
registrar.command.CATEGORY_IMPORT_EXPORT,
registrar.command.CATEGORY_MAINTENANCE,
registrar.command.CATEGORY_HELP,
registrar.command.CATEGORY_MISC,
registrar.command.CATEGORY_NONE,
]
# Human-readable category names. These are translated.
# Extensions with custom categories should add their names here.
CATEGORY_NAMES = {
registrar.command.CATEGORY_REPO_CREATION: b'Repository creation',
registrar.command.CATEGORY_REMOTE_REPO_MANAGEMENT: b'Remote repository management',
registrar.command.CATEGORY_COMMITTING: b'Change creation',
registrar.command.CATEGORY_CHANGE_NAVIGATION: b'Change navigation',
registrar.command.CATEGORY_CHANGE_MANAGEMENT: b'Change manipulation',
registrar.command.CATEGORY_CHANGE_ORGANIZATION: b'Change organization',
registrar.command.CATEGORY_WORKING_DIRECTORY: b'Working directory management',
registrar.command.CATEGORY_FILE_CONTENTS: b'File content management',
registrar.command.CATEGORY_IMPORT_EXPORT: b'Change import/export',
registrar.command.CATEGORY_MAINTENANCE: b'Repository maintenance',
registrar.command.CATEGORY_HELP: b'Help',
registrar.command.CATEGORY_MISC: b'Miscellaneous commands',
registrar.command.CATEGORY_NONE: b'Uncategorized commands',
}
# Topic categories.
TOPIC_CATEGORY_IDS = b'ids'
TOPIC_CATEGORY_OUTPUT = b'output'
TOPIC_CATEGORY_CONFIG = b'config'
TOPIC_CATEGORY_CONCEPTS = b'concepts'
TOPIC_CATEGORY_MISC = b'misc'
TOPIC_CATEGORY_NONE = b'none'
# The order in which topic categories will be displayed.
# Extensions with custom categories should insert them into this list
# after/before the appropriate item, rather than replacing the list or
# assuming absolute positions.
TOPIC_CATEGORY_ORDER = [
TOPIC_CATEGORY_IDS,
TOPIC_CATEGORY_OUTPUT,
TOPIC_CATEGORY_CONFIG,
TOPIC_CATEGORY_CONCEPTS,
TOPIC_CATEGORY_MISC,
TOPIC_CATEGORY_NONE,
]
# Human-readable topic category names. These are translated.
TOPIC_CATEGORY_NAMES = {
TOPIC_CATEGORY_IDS: b'Mercurial identifiers',
TOPIC_CATEGORY_OUTPUT: b'Mercurial output',
TOPIC_CATEGORY_CONFIG: b'Mercurial configuration',
TOPIC_CATEGORY_CONCEPTS: b'Concepts',
TOPIC_CATEGORY_MISC: b'Miscellaneous',
TOPIC_CATEGORY_NONE: b'Uncategorized topics',
}
def listexts(header, exts, indent=1, showdeprecated=False):
'''return a text listing of the given extensions'''
rst = []
if exts:
for name, desc in sorted(pycompat.iteritems(exts)):
if not showdeprecated and any(w in desc for w in _exclkeywords):
continue
rst.append(b'%s:%s: %s\n' % (b' ' * indent, name, desc))
if rst:
rst.insert(0, b'\n%s\n\n' % header)
return rst
def extshelp(ui):
rst = loaddoc(b'extensions')(ui).splitlines(True)
rst.extend(
listexts(
_(b'enabled extensions:'), extensions.enabled(), showdeprecated=True
)
)
rst.extend(
listexts(
_(b'disabled extensions:'),
extensions.disabled(),
showdeprecated=ui.verbose,
)
)
doc = b''.join(rst)
return doc
def optrst(header, 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 = _(b"VALUE") # default label
if not verbose and any(w in desc for w in _exclkeywords):
continue
so = b''
if shortopt:
so = b'-' + shortopt
lo = b'--' + longopt
if default is True:
lo = b'--[no-]' + longopt
if isinstance(default, fancyopts.customopt):
default = default.getdefaultvalue()
if default and not callable(default):
# default is of unknown type, and in Python 2 we abused
# the %s-shows-repr property to handle integers etc. To
# match that behavior on Python 3, we do str(default) and
# then convert it to bytes.
defaultstr = pycompat.bytestr(default)
if default is True:
defaultstr = _(b"on")
desc += _(b" (default: %s)") % defaultstr
if isinstance(default, list):
lo += b" %s [+]" % optlabel
multioccur = True
elif (default is not None) and not isinstance(default, bool):
lo += b" %s" % optlabel
data.append((so, lo, desc))
if multioccur:
header += _(b" ([+] can be repeated)")
rst = [b'\n%s:\n\n' % header]
rst.extend(minirst.maketable(data, 1))
return b''.join(rst)
def indicateomitted(rst, omitted, notomitted=None):
rst.append(b'\n\n.. container:: omitted\n\n %s\n\n' % omitted)
if notomitted:
rst.append(b'\n\n.. container:: notomitted\n\n %s\n\n' % notomitted)
def filtercmd(ui, cmd, func, kw, doc):
if not ui.debugflag and cmd.startswith(b"debug") and kw != b"debug":
# Debug command, and user is not looking for those.
return True
if not ui.verbose:
if not kw and not doc:
# Command had no documentation, no point in showing it by default.
return True
if getattr(func, 'alias', False) and not getattr(func, 'owndoc', False):
# Alias didn't have its own documentation.
return True
if doc and any(w in doc for w in _exclkeywords):
# Documentation has excluded keywords.
return True
if kw == b"shortlist" and not getattr(func, 'helpbasic', False):
# We're presenting the short list but the command is not basic.
return True
if ui.configbool(b'help', b'hidden-command.%s' % cmd):
# Configuration explicitly hides the command.
return True
return False
def filtertopic(ui, topic):
return ui.configbool(b'help', b'hidden-topic.%s' % topic, False)
def topicmatch(ui, commands, 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 = {
b'topics': [],
b'commands': [],
b'extensions': [],
b'extensioncommands': [],
}
for topic in helptable:
names, header, doc = topic[0:3]
# Old extensions may use a str as doc.
if (
sum(map(lowercontains, names))
or lowercontains(header)
or (callable(doc) and lowercontains(doc(ui)))
):
name = names[0]
if not filtertopic(ui, name):
results[b'topics'].append((names[0], header))
for cmd, entry in pycompat.iteritems(commands.table):
if len(entry) == 3:
summary = entry[2]
else:
summary = b''
# translate docs *before* searching there
func = entry[0]
docs = _(pycompat.getdoc(func)) or b''
if kw in cmd or lowercontains(summary) or lowercontains(docs):
doclines = docs.splitlines()
if doclines:
summary = doclines[0]
cmdname = cmdutil.parsealiases(cmd)[0]
if filtercmd(ui, cmdname, func, kw, docs):
continue
results[b'commands'].append((cmdname, summary))
for name, docs in itertools.chain(
pycompat.iteritems(extensions.enabled(False)),
pycompat.iteritems(extensions.disabled()),
):
if not docs:
continue
name = name.rpartition(b'.')[-1]
if lowercontains(name) or lowercontains(docs):
# extension docs are already translated
results[b'extensions'].append((name, docs.splitlines()[0]))
try:
mod = extensions.load(ui, name, b'')
except ImportError:
# debug message would be printed in extensions.load()
continue
for cmd, entry in pycompat.iteritems(getattr(mod, 'cmdtable', {})):
if kw in cmd or (len(entry) > 2 and lowercontains(entry[2])):
cmdname = cmdutil.parsealiases(cmd)[0]
func = entry[0]
cmddoc = pycompat.getdoc(func)
if cmddoc:
cmddoc = gettext(cmddoc).splitlines()[0]
else:
cmddoc = _(b'(no help text available)')
if filtercmd(ui, cmdname, func, kw, cmddoc):
continue
results[b'extensioncommands'].append((cmdname, cmddoc))
return results
def loaddoc(topic, subdir=None):
"""Return a delayed loader for help/topic.txt."""
def loader(ui):
package = b'mercurial.helptext'
if subdir:
package += b'.' + subdir
with resourceutil.open_resource(package, topic + b'.txt') as fp:
doc = gettext(fp.read())
for rewriter in helphooks.get(topic, []):
doc = rewriter(ui, topic, doc)
return doc
return loader
internalstable = sorted(
[
([b'bundle2'], _(b'Bundle2'), loaddoc(b'bundle2', subdir=b'internals')),
([b'bundles'], _(b'Bundles'), loaddoc(b'bundles', subdir=b'internals')),
([b'cbor'], _(b'CBOR'), loaddoc(b'cbor', subdir=b'internals')),
([b'censor'], _(b'Censor'), loaddoc(b'censor', subdir=b'internals')),
(
[b'changegroups'],
_(b'Changegroups'),
loaddoc(b'changegroups', subdir=b'internals'),
),
(
[b'config'],
_(b'Config Registrar'),
loaddoc(b'config', subdir=b'internals'),
),
(
[b'extensions', b'extension'],
_(b'Extension API'),
loaddoc(b'extensions', subdir=b'internals'),
),
(
[b'mergestate'],
_(b'Mergestate'),
loaddoc(b'mergestate', subdir=b'internals'),
),
(
[b'requirements'],
_(b'Repository Requirements'),
loaddoc(b'requirements', subdir=b'internals'),
),
(
[b'revlogs'],
_(b'Revision Logs'),
loaddoc(b'revlogs', subdir=b'internals'),
),
(
[b'wireprotocol'],
_(b'Wire Protocol'),
loaddoc(b'wireprotocol', subdir=b'internals'),
),
(
[b'wireprotocolrpc'],
_(b'Wire Protocol RPC'),
loaddoc(b'wireprotocolrpc', subdir=b'internals'),
),
(
[b'wireprotocolv2'],
_(b'Wire Protocol Version 2'),
loaddoc(b'wireprotocolv2', subdir=b'internals'),
),
]
)
def internalshelp(ui):
"""Generate the index for the "internals" topic."""
lines = [
b'To access a subtopic, use "hg help internals.{subtopic-name}"\n',
b'\n',
]
for names, header, doc in internalstable:
lines.append(b' :%s: %s\n' % (names[0], header))
return b''.join(lines)
helptable = sorted(
[
(
[b'bundlespec'],
_(b"Bundle File Formats"),
loaddoc(b'bundlespec'),
TOPIC_CATEGORY_CONCEPTS,
),
(
[b'color'],
_(b"Colorizing Outputs"),
loaddoc(b'color'),
TOPIC_CATEGORY_OUTPUT,
),
(
[b"config", b"hgrc"],
_(b"Configuration Files"),
loaddoc(b'config'),
TOPIC_CATEGORY_CONFIG,
),
(
[b'deprecated'],
_(b"Deprecated Features"),
loaddoc(b'deprecated'),
TOPIC_CATEGORY_MISC,
),
(
[b"dates"],
_(b"Date Formats"),
loaddoc(b'dates'),
TOPIC_CATEGORY_OUTPUT,
),
(
[b"flags"],
_(b"Command-line flags"),
loaddoc(b'flags'),
TOPIC_CATEGORY_CONFIG,
),
(
[b"patterns"],
_(b"File Name Patterns"),
loaddoc(b'patterns'),
TOPIC_CATEGORY_IDS,
),
(
[b'environment', b'env'],
_(b'Environment Variables'),
loaddoc(b'environment'),
TOPIC_CATEGORY_CONFIG,
),
(
[
b'revisions',
b'revs',
b'revsets',
b'revset',
b'multirevs',
b'mrevs',
],
_(b'Specifying Revisions'),
loaddoc(b'revisions'),
TOPIC_CATEGORY_IDS,
),
(
[b'filesets', b'fileset'],
_(b"Specifying File Sets"),
loaddoc(b'filesets'),
TOPIC_CATEGORY_IDS,
),
(
[b'diffs'],
_(b'Diff Formats'),
loaddoc(b'diffs'),
TOPIC_CATEGORY_OUTPUT,
),
(
[b'merge-tools', b'mergetools', b'mergetool'],
_(b'Merge Tools'),
loaddoc(b'merge-tools'),
TOPIC_CATEGORY_CONFIG,
),
(
[b'templating', b'templates', b'template', b'style'],
_(b'Template Usage'),
loaddoc(b'templates'),
TOPIC_CATEGORY_OUTPUT,
),
([b'urls'], _(b'URL Paths'), loaddoc(b'urls'), TOPIC_CATEGORY_IDS),
(
[b"extensions"],
_(b"Using Additional Features"),
extshelp,
TOPIC_CATEGORY_CONFIG,
),
(
[b"subrepos", b"subrepo"],
_(b"Subrepositories"),
loaddoc(b'subrepos'),
TOPIC_CATEGORY_CONCEPTS,
),
(
[b"hgweb"],
_(b"Configuring hgweb"),
loaddoc(b'hgweb'),
TOPIC_CATEGORY_CONFIG,
),
(
[b"glossary"],
_(b"Glossary"),
loaddoc(b'glossary'),
TOPIC_CATEGORY_CONCEPTS,
),
(
[b"hgignore", b"ignore"],
_(b"Syntax for Mercurial Ignore Files"),
loaddoc(b'hgignore'),
TOPIC_CATEGORY_IDS,
),
(
[b"phases"],
_(b"Working with Phases"),
loaddoc(b'phases'),
TOPIC_CATEGORY_CONCEPTS,
),
(
[b'scripting'],
_(b'Using Mercurial from scripts and automation'),
loaddoc(b'scripting'),
TOPIC_CATEGORY_MISC,
),
(
[b'internals'],
_(b"Technical implementation topics"),
internalshelp,
TOPIC_CATEGORY_MISC,
),
(
[b'pager'],
_(b"Pager Support"),
loaddoc(b'pager'),
TOPIC_CATEGORY_CONFIG,
),
]
)
# Maps topics with sub-topics to a list of their sub-topics.
subtopics = {
b'internals': internalstable,
}
# 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(ui, topic, doc, marker, items, dedent=False):
"""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 = (pycompat.getdoc(items[name]) or b'').rstrip()
if not text or not ui.verbose and any(w in text for w in _exclkeywords):
continue
text = gettext(text)
if dedent:
# Abuse latin1 to use textwrap.dedent() on bytes.
text = textwrap.dedent(text.decode('latin1')).encode('latin1')
lines = text.splitlines()
doclines = [(lines[0])]
for l in lines[1:]:
# Stop once we find some Python doctest
if l.strip().startswith(b'>>>'):
break
if dedent:
doclines.append(l.rstrip())
else:
doclines.append(b' ' + l.strip())
entries.append(b'\n'.join(doclines))
entries = b'\n\n'.join(entries)
return doc.replace(marker, entries)
def addtopicsymbols(topic, marker, symbols, dedent=False):
def add(ui, topic, doc):
return makeitemsdoc(ui, topic, doc, marker, symbols, dedent=dedent)
addtopichook(topic, add)
addtopicsymbols(
b'bundlespec',
b'.. bundlecompressionmarker',
compression.bundlecompressiontopics(),
)
addtopicsymbols(b'filesets', b'.. predicatesmarker', fileset.symbols)
addtopicsymbols(
b'merge-tools', b'.. internaltoolsmarker', filemerge.internalsdoc
)
addtopicsymbols(b'revisions', b'.. predicatesmarker', revset.symbols)
addtopicsymbols(b'templates', b'.. keywordsmarker', templatekw.keywords)
addtopicsymbols(b'templates', b'.. filtersmarker', templatefilters.filters)
addtopicsymbols(b'templates', b'.. functionsmarker', templatefuncs.funcs)
addtopicsymbols(
b'hgweb', b'.. webcommandsmarker', webcommands.commands, dedent=True
)
def inserttweakrc(ui, topic, doc):
marker = b'.. tweakdefaultsmarker'
repl = uimod.tweakrc
def sub(m):
lines = [m.group(1) + s for s in repl.splitlines()]
return b'\n'.join(lines)
return re.sub(br'( *)%s' % re.escape(marker), sub, doc)
addtopichook(b'config', inserttweakrc)
def help_(
ui,
commands,
name,
unknowncmd=False,
full=True,
subtopic=None,
fullname=None,
**opts
):
'''
Generate the help for 'name' as unformatted restructured text. If
'name' is None, describe the commands available.
'''
opts = pycompat.byteskwargs(opts)
def helpcmd(name, subtopic=None):
try:
aliases, entry = cmdutil.findcmd(
name, commands.table, strict=unknowncmd
)
except error.AmbiguousCommand as inst:
# py3 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: cmdutil.parsealiases(c)[0].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', None):
rst.append(entry[0].badalias + b'\n')
if entry[0].unknowncmd:
try:
rst.extend(helpextcmd(entry[0].cmdname))
except error.UnknownCommand:
pass
return rst
# synopsis
if len(entry) > 2:
if entry[2].startswith(b'hg'):
rst.append(b"%s\n" % entry[2])
else:
rst.append(b'hg %s %s\n' % (aliases[0], entry[2]))
else:
rst.append(b'hg %s\n' % aliases[0])
# aliases
if full and not ui.quiet and len(aliases) > 1:
rst.append(_(b"\naliases: %s\n") % b', '.join(aliases[1:]))
rst.append(b'\n')
# description
doc = gettext(pycompat.getdoc(entry[0]))
if not doc:
doc = _(b"(no help text available)")
if util.safehasattr(entry[0], b'definition'): # aliased command
source = entry[0].source
if entry[0].definition.startswith(b'!'): # shell alias
doc = _(b'shell alias for: %s\n\n%s\n\ndefined by: %s\n') % (
entry[0].definition[1:],
doc,
source,
)
else:
doc = _(b'alias for: hg %s\n\n%s\n\ndefined by: %s\n') % (
entry[0].definition,
doc,
source,
)
doc = doc.splitlines(True)
if ui.quiet or not full:
rst.append(doc[0])
else:
rst.extend(doc)
rst.append(b'\n')
# check if this command shadows a non-trivial (multi-line)
# extension help text
try:
mod = extensions.find(name)
doc = gettext(pycompat.getdoc(mod)) or b''
if b'\n' in doc.strip():
msg = _(
b"(use 'hg help -e %s' to show help for "
b"the %s extension)"
) % (name, name)
rst.append(b'\n%s\n' % msg)
except KeyError:
pass
# options
if not ui.quiet and entry[1]:
rst.append(optrst(_(b"options"), entry[1], ui.verbose))
if ui.verbose:
rst.append(
optrst(_(b"global options"), commands.globalopts, ui.verbose)
)
if not ui.verbose:
if not full:
rst.append(_(b"\n(use 'hg %s -h' to show more help)\n") % name)
elif not ui.quiet:
rst.append(
_(
b'\n(some details hidden, use --verbose '
b'to show complete help)'
)
)
return rst
def helplist(select=None, **opts):
# Category -> list of commands
cats = {}
# Command -> short description
h = {}
# Command -> string showing synonyms
syns = {}
for c, e in pycompat.iteritems(commands.table):
fs = cmdutil.parsealiases(c)
f = fs[0]
syns[f] = b', '.join(fs)
func = e[0]
if select and not select(f):
continue
doc = pycompat.getdoc(func)
if filtercmd(ui, f, func, name, doc):
continue
doc = gettext(doc)
if not doc:
doc = _(b"(no help text available)")
h[f] = doc.splitlines()[0].rstrip()
cat = getattr(func, 'helpcategory', None) or (
registrar.command.CATEGORY_NONE
)
cats.setdefault(cat, []).append(f)
rst = []
if not h:
if not ui.quiet:
rst.append(_(b'no commands defined\n'))
return rst
# Output top header.
if not ui.quiet:
if name == b"shortlist":
rst.append(_(b'basic commands:\n\n'))
elif name == b"debug":
rst.append(_(b'debug commands (internal and unsupported):\n\n'))
else:
rst.append(_(b'list of commands:\n'))
def appendcmds(cmds):
cmds = sorted(cmds)
for c in cmds:
if ui.verbose:
rst.append(b" :%s: %s\n" % (syns[c], h[c]))
else:
rst.append(b' :%s: %s\n' % (c, h[c]))
if name in (b'shortlist', b'debug'):
# List without categories.
appendcmds(h)
else:
# Check that all categories have an order.
missing_order = set(cats.keys()) - set(CATEGORY_ORDER)
if missing_order:
ui.develwarn(
b'help categories missing from CATEGORY_ORDER: %s'
% missing_order
)
# List per category.
for cat in CATEGORY_ORDER:
catfns = cats.get(cat, [])
if catfns:
if len(cats) > 1:
catname = gettext(CATEGORY_NAMES[cat])
rst.append(b"\n%s:\n" % catname)
rst.append(b"\n")
appendcmds(catfns)
ex = opts.get
anyopts = ex('keyword') or not (ex('command') or ex('extension'))
if not name and anyopts:
exts = listexts(
_(b'enabled extensions:'),
extensions.enabled(),
showdeprecated=ui.verbose,
)
if exts:
rst.append(b'\n')
rst.extend(exts)
rst.append(_(b"\nadditional help topics:\n"))
# Group commands by category.
topiccats = {}
for topic in helptable:
names, header, doc = topic[0:3]
if len(topic) > 3 and topic[3]:
category = topic[3]
else:
category = TOPIC_CATEGORY_NONE
topicname = names[0]
if not filtertopic(ui, topicname):
topiccats.setdefault(category, []).append(
(topicname, header)
)
# Check that all categories have an order.
missing_order = set(topiccats.keys()) - set(TOPIC_CATEGORY_ORDER)
if missing_order:
ui.develwarn(
b'help categories missing from TOPIC_CATEGORY_ORDER: %s'
% missing_order
)
# Output topics per category.
for cat in TOPIC_CATEGORY_ORDER:
topics = topiccats.get(cat, [])
if topics:
if len(topiccats) > 1:
catname = gettext(TOPIC_CATEGORY_NAMES[cat])
rst.append(b"\n%s:\n" % catname)
rst.append(b"\n")
for t, desc in topics:
rst.append(b" :%s: %s\n" % (t, desc))
if ui.quiet:
pass
elif ui.verbose:
rst.append(
b'\n%s\n'
% optrst(_(b"global options"), commands.globalopts, ui.verbose)
)
if name == b'shortlist':
rst.append(
_(b"\n(use 'hg help' for the full list of commands)\n")
)
else:
if name == b'shortlist':
rst.append(
_(
b"\n(use 'hg help' for the full list of commands "
b"or 'hg -v' for details)\n"
)
)
elif name and not full:
rst.append(
_(b"\n(use 'hg help %s' to show the full help text)\n")
% name
)
elif name and syns and name in syns.keys():
rst.append(
_(
b"\n(use 'hg help -v -e %s' to show built-in "
b"aliases and global options)\n"
)
% name
)
else:
rst.append(
_(
b"\n(use 'hg help -v%s' to show built-in aliases "
b"and global options)\n"
)
% (name and b" " + name or b"")
)
return rst
def helptopic(name, subtopic=None):
# Look for sub-topic entry first.
header, doc = None, None
if subtopic and name in subtopics:
for names, header, doc in subtopics[name]:
if subtopic in names:
break
if not any(subtopic in s[0] for s in subtopics[name]):
raise error.UnknownCommand(name)
if not header:
for topic in helptable:
names, header, doc = topic[0:3]
if name in names:
break
else:
raise error.UnknownCommand(name)
rst = [minirst.section(header)]
# description
if not doc:
rst.append(b" %s\n" % _(b"(no help text available)"))
if callable(doc):
rst += [b" %s\n" % l for l in doc(ui).splitlines()]
if not ui.verbose:
omitted = _(
b'(some details hidden, use --verbose'
b' to show complete help)'
)
indicateomitted(rst, omitted)
try:
cmdutil.findcmd(name, commands.table)
rst.append(
_(b"\nuse 'hg help -c %s' to see help for the %s command\n")
% (name, name)
)
except error.UnknownCommand:
pass
return rst
def helpext(name, subtopic=None):
try:
mod = extensions.find(name)
doc = gettext(pycompat.getdoc(mod)) or _(b'no help text available')
except KeyError:
mod = None
doc = extensions.disabledext(name)
if not doc:
raise error.UnknownCommand(name)
if b'\n' not in doc:
head, tail = doc, b""
else:
head, tail = doc.split(b'\n', 1)
rst = [_(b'%s extension - %s\n\n') % (name.rpartition(b'.')[-1], head)]
if tail:
rst.extend(tail.splitlines(True))
rst.append(b'\n')
if not ui.verbose:
omitted = _(
b'(some details hidden, use --verbose'
b' to show complete help)'
)
indicateomitted(rst, omitted)
if mod:
try:
ct = mod.cmdtable
except AttributeError:
ct = {}
modcmds = {c.partition(b'|')[0] for c in ct}
rst.extend(helplist(modcmds.__contains__))
else:
rst.append(
_(
b"(use 'hg help extensions' for information on enabling"
b" extensions)\n"
)
)
return rst
def helpextcmd(name, subtopic=None):
cmd, ext, doc = extensions.disabledcmd(
ui, name, ui.configbool(b'ui', b'strict')
)
doc = doc.splitlines()[0]
rst = listexts(
_(b"'%s' is provided by the following extension:") % cmd,
{ext: doc},
indent=4,
showdeprecated=True,
)
rst.append(b'\n')
rst.append(
_(
b"(use 'hg help extensions' for information on enabling "
b"extensions)\n"
)
)
return rst
rst = []
kw = opts.get(b'keyword')
if kw or name is None and any(opts[o] for o in opts):
matches = topicmatch(ui, commands, name or b'')
helpareas = []
if opts.get(b'extension'):
helpareas += [(b'extensions', _(b'Extensions'))]
if opts.get(b'command'):
helpareas += [(b'commands', _(b'Commands'))]
if not helpareas:
helpareas = [
(b'topics', _(b'Topics')),
(b'commands', _(b'Commands')),
(b'extensions', _(b'Extensions')),
(b'extensioncommands', _(b'Extension Commands')),
]
for t, title in helpareas:
if matches[t]:
rst.append(b'%s:\n\n' % title)
rst.extend(minirst.maketable(sorted(matches[t]), 1))
rst.append(b'\n')
if not rst:
msg = _(b'no matches')
hint = _(b"try 'hg help' for a list of topics")
raise error.Abort(msg, hint=hint)
elif name and name != b'shortlist':
queries = []
if unknowncmd:
queries += [helpextcmd]
if opts.get(b'extension'):
queries += [helpext]
if opts.get(b'command'):
queries += [helpcmd]
if not queries:
queries = (helptopic, helpcmd, helpext, helpextcmd)
for f in queries:
try:
rst = f(name, subtopic)
break
except error.UnknownCommand:
pass
else:
if unknowncmd:
raise error.UnknownCommand(name)
else:
if fullname:
formatname = fullname
else:
formatname = name
if subtopic:
hintname = subtopic
else:
hintname = name
msg = _(b'no such help topic: %s') % formatname
hint = _(b"try 'hg help --keyword %s'") % hintname
raise error.Abort(msg, hint=hint)
else:
# program name
if not ui.quiet:
rst = [_(b"Mercurial Distributed SCM\n"), b'\n']
rst.extend(helplist(None, **pycompat.strkwargs(opts)))
return b''.join(rst)
def formattedhelp(
ui, commands, fullname, keep=None, unknowncmd=False, full=True, **opts
):
"""get help for a given topic (as a dotted name) as rendered rst
Either returns the rendered help text or raises an exception.
"""
if keep is None:
keep = []
else:
keep = list(keep) # make a copy so we can mutate this later
# <fullname> := <name>[.<subtopic][.<section>]
name = subtopic = section = None
if fullname is not None:
nameparts = fullname.split(b'.')
name = nameparts.pop(0)
if nameparts and name in subtopics:
subtopic = nameparts.pop(0)
if nameparts:
section = encoding.lower(b'.'.join(nameparts))
textwidth = ui.configint(b'ui', b'textwidth')
termwidth = ui.termwidth() - 2
if textwidth <= 0 or termwidth < textwidth:
textwidth = termwidth
text = help_(
ui,
commands,
name,
fullname=fullname,
subtopic=subtopic,
unknowncmd=unknowncmd,
full=full,
**opts
)
blocks, pruned = minirst.parse(text, keep=keep)
if b'verbose' in pruned:
keep.append(b'omitted')
else:
keep.append(b'notomitted')
blocks, pruned = minirst.parse(text, keep=keep)
if section:
blocks = minirst.filtersections(blocks, section)
# We could have been given a weird ".foo" section without a name
# to look for, or we could have simply failed to found "foo.bar"
# because bar isn't a section of foo
if section and not (blocks and name):
raise error.Abort(_(b"help section not found: %s") % fullname)
return minirst.formatplain(blocks, textwidth)