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systemd/tools/make-directive-index.py
Zbigniew Jędrzejewski-Szmek 958caa58c0 man: include the target name when linking to man pages in html output
Links like http://www.freedesktop.org/software/systemd/man/systemd.socket.html
are changed to http://www.freedesktop.org/software/systemd/man/systemd.socket.html#Accept=.

This implementation is quick & dirty, and misses various corner
cases. A fairly important one is that when a few directives share the
same anchor (which happens when multiple directives are described in
the same paragraph), generated links for everything except the first
one link to an invalid anchor. Another shortcoming is that the
formatting does not use the proper generateID machinery, so the anchor
name could be wrong in some cases. But it seems to work for a large
percentage of links, so seems to be an improvement in usability. When
the anchor is missing, we land at the top of the page, which is the
same as before. If the anchor were to point to different spot, this
would be more confusing... Not sure if that ever happens. Anyway, the
user should be able to recover from landing on the wrong place in the
page.

(Mostly) fixes https://github.com/systemd/systemd/issues/1956.
2015-11-22 23:54:29 -05:00

323 lines
11 KiB
Python
Executable File

# -*- Mode: python; coding: utf-8; indent-tabs-mode: nil -*- */
#
# This file is part of systemd.
#
# Copyright 2012-2013 Zbigniew Jędrzejewski-Szmek
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# systemd is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with systemd; If not, see <http://www.gnu.org/licenses/>.
import sys
import collections
import re
from xml_helper import *
from copy import deepcopy
TEMPLATE = '''\
<refentry id="systemd.directives" conditional="HAVE_PYTHON">
<refentryinfo>
<title>systemd.directives</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Zbigniew</firstname>
<surname>Jędrzejewski-Szmek</surname>
<email>zbyszek@in.waw.pl</email>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>systemd.directives</refentrytitle>
<manvolnum>7</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd.directives</refname>
<refpurpose>Index of configuration directives</refpurpose>
</refnamediv>
<refsect1>
<title>Unit directives</title>
<para>Directives for configuring units, used in unit
files.</para>
<variablelist id='unit-directives' />
</refsect1>
<refsect1>
<title>Options on the kernel command line</title>
<para>Kernel boot options for configuring the behaviour of the
systemd process.</para>
<variablelist id='kernel-commandline-options' />
</refsect1>
<refsect1>
<title>Environment variables</title>
<para>Environment variables understood by the systemd
manager and other programs.</para>
<variablelist id='environment-variables' />
</refsect1>
<refsect1>
<title>UDEV directives</title>
<para>Directives for configuring systemd units through the
udev database.</para>
<variablelist id='udev-directives' />
</refsect1>
<refsect1>
<title>Network directives</title>
<para>Directives for configuring network links through the
net-setup-link udev builtin and networks through
systemd-networkd.</para>
<variablelist id='network-directives' />
</refsect1>
<refsect1>
<title>Journal fields</title>
<para>Fields in the journal events with a well known meaning.</para>
<variablelist id='journal-directives' />
</refsect1>
<refsect1>
<title>PAM configuration directives</title>
<para>Directives for configuring PAM behaviour.</para>
<variablelist id='pam-directives' />
</refsect1>
<refsect1>
<title><filename>/etc/crypttab</filename> and
<filename>/etc/fstab</filename> options</title>
<para>Options which influence mounted filesystems and
encrypted volumes.</para>
<variablelist id='fstab-options' />
</refsect1>
<refsect1>
<title>System manager directives</title>
<para>Directives for configuring the behaviour of the
systemd process.</para>
<variablelist id='systemd-directives' />
</refsect1>
<refsect1>
<title>bootchart.conf directives</title>
<para>Directives for configuring the behaviour of the
systemd-bootchart process.</para>
<variablelist id='bootchart-directives' />
</refsect1>
<refsect1>
<title>command line options</title>
<para>Command-line options accepted by programs in the
systemd suite.</para>
<variablelist id='options' />
</refsect1>
<refsect1>
<title>Constants</title>
<para>Various constant used and/or defined by systemd.</para>
<variablelist id='constants' />
</refsect1>
<refsect1>
<title>Miscellaneous options and directives</title>
<para>Other configuration elements which don't fit in
any of the above groups.</para>
<variablelist id='miscellaneous' />
</refsect1>
<refsect1>
<title>Files and directories</title>
<para>Paths and file names referred to in the
documentation.</para>
<variablelist id='filenames' />
</refsect1>
<refsect1>
<title>Colophon</title>
<para id='colophon' />
</refsect1>
</refentry>
'''
COLOPHON = '''\
This index contains {count} entries in {sections} sections,
referring to {pages} individual manual pages.
'''
def _extract_directives(directive_groups, formatting, page):
t = xml_parse(page)
section = t.find('./refmeta/manvolnum').text
pagename = t.find('./refmeta/refentrytitle').text
storopt = directive_groups['options']
for variablelist in t.iterfind('.//variablelist'):
klass = variablelist.attrib.get('class')
storvar = directive_groups[klass or 'miscellaneous']
# <option>s go in OPTIONS, unless class is specified
for xpath, stor in (('./varlistentry/term/varname', storvar),
('./varlistentry/term/option',
storvar if klass else storopt)):
for name in variablelist.iterfind(xpath):
text = re.sub(r'([= ]).*', r'\1', name.text).rstrip()
stor[text].append((pagename, section))
if text not in formatting:
# use element as formatted display
if name.text[-1] in '= ':
name.clear()
else:
name.tail = ''
name.text = text
formatting[text] = name
storfile = directive_groups['filenames']
for xpath, absolute_only in (('.//refsynopsisdiv//filename', False),
('.//refsynopsisdiv//command', False),
('.//filename', True)):
for name in t.iterfind(xpath):
if absolute_only and not (name.text and name.text.startswith('/')):
continue
if name.attrib.get('noindex'):
continue
name.tail = ''
if name.text:
if name.text.endswith('*'):
name.text = name.text[:-1]
if not name.text.startswith('.'):
text = name.text.partition(' ')[0]
if text != name.text:
name.clear()
name.text = text
if text.endswith('/'):
text = text[:-1]
storfile[text].append((pagename, section))
if text not in formatting:
# use element as formatted display
formatting[text] = name
else:
text = ' '.join(name.itertext())
storfile[text].append((pagename, section))
formatting[text] = name
storfile = directive_groups['constants']
for name in t.iterfind('.//constant'):
if name.attrib.get('noindex'):
continue
name.tail = ''
if name.text.startswith('('): # a cast, strip it
name.text = name.text.partition(' ')[2]
storfile[name.text].append((pagename, section))
formatting[name.text] = name
def _make_section(template, name, directives, formatting):
varlist = template.find(".//*[@id='{}']".format(name))
for varname, manpages in sorted(directives.items()):
entry = tree.SubElement(varlist, 'varlistentry')
term = tree.SubElement(entry, 'term')
display = deepcopy(formatting[varname])
term.append(display)
para = tree.SubElement(tree.SubElement(entry, 'listitem'), 'para')
b = None
for manpage, manvolume in sorted(set(manpages)):
if b is not None:
b.tail = ', '
b = tree.SubElement(para, 'citerefentry')
c = tree.SubElement(b, 'refentrytitle')
c.text = manpage
c.attrib['target'] = varname
d = tree.SubElement(b, 'manvolnum')
d.text = manvolume
entry.tail = '\n\n'
def _make_colophon(template, groups):
count = 0
pages = set()
for group in groups:
count += len(group)
for pagelist in group.values():
pages |= set(pagelist)
para = template.find(".//para[@id='colophon']")
para.text = COLOPHON.format(count=count,
sections=len(groups),
pages=len(pages))
def _make_page(template, directive_groups, formatting):
"""Create an XML tree from directive_groups.
directive_groups = {
'class': {'variable': [('manpage', 'manvolume'), ...],
'variable2': ...},
...
}
"""
for name, directives in directive_groups.items():
_make_section(template, name, directives, formatting)
_make_colophon(template, directive_groups.values())
return template
def make_page(*xml_files):
"Extract directives from xml_files and return XML index tree."
template = tree.fromstring(TEMPLATE)
names = [vl.get('id') for vl in template.iterfind('.//variablelist')]
directive_groups = {name:collections.defaultdict(list)
for name in names}
formatting = {}
for page in xml_files:
try:
_extract_directives(directive_groups, formatting, page)
except Exception:
raise ValueError("failed to process " + page)
return _make_page(template, directive_groups, formatting)
if __name__ == '__main__':
with open(sys.argv[1], 'wb') as f:
f.write(xml_print(make_page(*sys.argv[2:])))