sapling/doc/gendoc.py
Jun Wu 415f3fd88c gendoc: import extensions properly
Summary:
The script tries to extract docstrings of all extensions. It failed to do so
because the extension directory was moved. Fix it by using the default path to
import extensions.

Note: this was half broken before the `edenscm` move because the extensions
cannot be imported correctly so every extension fall backs to "None" in their
help text. This diff fixes that so `man hg` would actually include actual
extension helps. However, some extensions have ill-formatted rst docstrings.
They are fixed in the next diff.

Reviewed By: singhsrb

Differential Revision: D13885567

fbshipit-source-id: 0aba1bc4b0f09fbd8e55d9c8e6ff2587ff6be3f7
2019-01-30 14:57:42 -08:00

246 lines
6.7 KiB
Python
Executable File

#!/usr/bin/env python
"""usage: %s DOC ...
where DOC is the name of a document
"""
from __future__ import absolute_import
# isort:skip_file
import os
import sys
import textwrap
# This script is executed during installs and may not have C extensions
# available. Relax C module requirements.
os.environ["HGMODULEPOLICY"] = "allow"
# import from the live mercurial repo
sys.path.insert(0, "..")
from edenscm.mercurial import demandimport
demandimport.enable()
# Load util so that the locale path is set by i18n.setdatapath() before
# calling _().
from edenscm.mercurial import util
util.datapath
from edenscm.mercurial import commands, extensions, help, minirst, ui as uimod
from edenscm.mercurial.i18n import _, gettext
table = commands.table
globalopts = commands.globalopts
helptable = help.helptable
loaddoc = help.loaddoc
def get_desc(docstr):
if not docstr:
return "", ""
# sanitize
docstr = docstr.strip("\n")
docstr = docstr.rstrip()
shortdesc = docstr.splitlines()[0].strip()
i = docstr.find("\n")
if i != -1:
desc = docstr[i + 2 :]
else:
desc = shortdesc
desc = textwrap.dedent(desc)
return (shortdesc, desc)
def get_opts(opts):
for opt in opts:
if len(opt) == 5:
shortopt, longopt, default, desc, optlabel = opt
else:
shortopt, longopt, default, desc = opt
optlabel = _("VALUE")
allopts = []
if shortopt:
allopts.append("-%s" % shortopt)
if longopt:
allopts.append("--%s" % longopt)
if isinstance(default, list):
allopts[-1] += " <%s[+]>" % optlabel
elif (default is not None) and not isinstance(default, bool):
allopts[-1] += " <%s>" % optlabel
if "\n" in desc:
# only remove line breaks and indentation
desc = " ".join(l.lstrip() for l in desc.split("\n"))
desc += default and _(" (default: %s)") % default or ""
yield (", ".join(allopts), desc)
def get_cmd(cmd, cmdtable):
d = {}
attr = cmdtable[cmd]
cmds = cmd.lstrip("^").split("|")
d["cmd"] = cmds[0]
d["aliases"] = cmd.split("|")[1:]
d["desc"] = get_desc(gettext(attr[0].__doc__))
d["opts"] = list(get_opts(attr[1]))
s = "hg " + cmds[0]
if len(attr) > 2:
if not attr[2].startswith("hg"):
s += " " + attr[2]
else:
s = attr[2]
d["synopsis"] = s.strip()
return d
def showdoc(ui):
# print options
ui.write(minirst.section(_("Options")))
multioccur = False
for optstr, desc in get_opts(globalopts):
ui.write("%s\n %s\n\n" % (optstr, desc))
if optstr.endswith("[+]>"):
multioccur = True
if multioccur:
ui.write(_("\n[+] marked option can be specified multiple times\n"))
ui.write("\n")
# print cmds
ui.write(minirst.section(_("Commands")))
commandprinter(ui, table, minirst.subsection)
# print help topics
# The config help topic is included in the hgrc.5 man page.
helpprinter(ui, helptable, minirst.section, exclude=["config"])
ui.write(minirst.section(_("Extensions")))
ui.write(
_(
"This section contains help for extensions that are "
"distributed together with Mercurial. Help for other "
"extensions is available in the help system."
)
)
ui.write(
(
"\n\n"
".. contents::\n"
" :class: htmlonly\n"
" :local:\n"
" :depth: 1\n\n"
)
)
for extensionname in sorted(allextensionnames()):
try:
mod = extensions.load(ui, extensionname, "")
except Exception:
continue
ui.write(minirst.subsection(extensionname))
ui.write("%s\n\n" % gettext(mod.__doc__))
cmdtable = getattr(mod, "cmdtable", None)
if cmdtable:
ui.write(minirst.subsubsection(_("Commands")))
commandprinter(ui, cmdtable, minirst.subsubsubsection)
def showtopic(ui, topic):
extrahelptable = [
(["common"], "", loaddoc("common")),
(["hg.1"], "", loaddoc("hg.1")),
(["hg-ssh.8"], "", loaddoc("hg-ssh.8")),
(["hgignore.5"], "", loaddoc("hgignore.5")),
(["hgrc.5"], "", loaddoc("hgrc.5")),
(["hgignore.5.gendoc"], "", loaddoc("hgignore")),
(["hgrc.5.gendoc"], "", loaddoc("config")),
]
helpprinter(ui, helptable + extrahelptable, None, include=[topic])
def helpprinter(ui, helptable, sectionfunc, include=[], exclude=[]):
for names, sec, doc in helptable:
if exclude and names[0] in exclude:
continue
if include and names[0] not in include:
continue
for name in names:
ui.write(".. _%s:\n" % name)
ui.write("\n")
if sectionfunc:
ui.write(sectionfunc(sec))
if callable(doc):
doc = doc(ui)
ui.write(doc)
ui.write("\n")
def commandprinter(ui, cmdtable, sectionfunc):
h = {}
for c, attr in cmdtable.items():
f = c.split("|")[0]
f = f.lstrip("^")
h[f] = c
cmds = h.keys()
cmds.sort()
for f in cmds:
if f.startswith("debug"):
continue
d = get_cmd(h[f], cmdtable)
ui.write(sectionfunc(d["cmd"]))
# short description
ui.write(d["desc"][0])
# synopsis
ui.write("::\n\n")
synopsislines = d["synopsis"].splitlines()
for line in synopsislines:
# some commands (such as rebase) have a multi-line
# synopsis
ui.write(" %s\n" % line)
ui.write("\n")
# description
ui.write("%s\n\n" % d["desc"][1])
# options
opt_output = list(d["opts"])
if opt_output:
opts_len = max([len(line[0]) for line in opt_output])
ui.write(_("Options:\n\n"))
multioccur = False
for optstr, desc in opt_output:
if desc:
s = "%-*s %s" % (opts_len, optstr, desc)
else:
s = optstr
ui.write("%s\n" % s)
if optstr.endswith("[+]>"):
multioccur = True
if multioccur:
ui.write(_("\n[+] marked option can be specified" " multiple times\n"))
ui.write("\n")
# aliases
if d["aliases"]:
ui.write(_(" aliases: %s\n\n") % " ".join(d["aliases"]))
def allextensionnames():
return extensions.enabled().keys() + extensions.disabled().keys()
if __name__ == "__main__":
doc = "hg.1.gendoc"
if len(sys.argv) > 1:
doc = sys.argv[1]
ui = uimod.ui.load()
if doc == "hg.1.gendoc":
showdoc(ui)
else:
showtopic(ui, sys.argv[1])