mirror of
https://github.com/systemd/systemd.git
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818bf54632
This part of the copyright blurb stems from the GPL use recommendations: https://www.gnu.org/licenses/gpl-howto.en.html The concept appears to originate in times where version control was per file, instead of per tree, and was a way to glue the files together. Ultimately, we nowadays don't live in that world anymore, and this information is entirely useless anyway, as people are very welcome to copy these files into any projects they like, and they shouldn't have to change bits that are part of our copyright header for that. hence, let's just get rid of this old cruft, and shorten our codebase a bit.
301 lines
9.9 KiB
Python
Executable File
301 lines
9.9 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- Mode: python; coding: utf-8; indent-tabs-mode: nil -*- */
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# SPDX-License-Identifier: LGPL-2.1+
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#
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# Copyright 2012-2013 Zbigniew Jędrzejewski-Szmek
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import sys
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import collections
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import re
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from xml_helper import xml_parse, xml_print, tree
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from copy import deepcopy
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TEMPLATE = '''\
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<refentry id="systemd.directives" conditional="HAVE_PYTHON">
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<refentryinfo>
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<title>systemd.directives</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Zbigniew</firstname>
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<surname>Jędrzejewski-Szmek</surname>
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<email>zbyszek@in.waw.pl</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd.directives</refentrytitle>
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<manvolnum>7</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd.directives</refname>
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<refpurpose>Index of configuration directives</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Unit directives</title>
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<para>Directives for configuring units, used in unit
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files.</para>
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<variablelist id='unit-directives' />
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</refsect1>
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<refsect1>
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<title>Options on the kernel command line</title>
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<para>Kernel boot options for configuring the behaviour of the
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systemd process.</para>
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<variablelist id='kernel-commandline-options' />
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</refsect1>
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<refsect1>
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<title>Environment variables</title>
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<para>Environment variables understood by the systemd
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manager and other programs.</para>
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<variablelist id='environment-variables' />
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</refsect1>
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<refsect1>
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<title>UDEV directives</title>
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<para>Directives for configuring systemd units through the
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udev database.</para>
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<variablelist id='udev-directives' />
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</refsect1>
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<refsect1>
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<title>Network directives</title>
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<para>Directives for configuring network links through the
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net-setup-link udev builtin and networks through
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systemd-networkd.</para>
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<variablelist id='network-directives' />
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</refsect1>
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<refsect1>
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<title>Journal fields</title>
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<para>Fields in the journal events with a well known meaning.</para>
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<variablelist id='journal-directives' />
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</refsect1>
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<refsect1>
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<title>PAM configuration directives</title>
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<para>Directives for configuring PAM behaviour.</para>
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<variablelist id='pam-directives' />
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</refsect1>
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<refsect1>
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<title><filename>/etc/crypttab</filename> and
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<filename>/etc/fstab</filename> options</title>
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<para>Options which influence mounted filesystems and
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encrypted volumes.</para>
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<variablelist id='fstab-options' />
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</refsect1>
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<refsect1>
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<title>System manager directives</title>
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<para>Directives for configuring the behaviour of the
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systemd process.</para>
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<variablelist id='systemd-directives' />
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</refsect1>
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<refsect1>
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<title>command line options</title>
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<para>Command-line options accepted by programs in the
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systemd suite.</para>
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<variablelist id='options' />
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</refsect1>
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<refsect1>
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<title>Constants</title>
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<para>Various constant used and/or defined by systemd.</para>
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<variablelist id='constants' />
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</refsect1>
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<refsect1>
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<title>Miscellaneous options and directives</title>
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<para>Other configuration elements which don't fit in
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any of the above groups.</para>
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<variablelist id='miscellaneous' />
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</refsect1>
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<refsect1>
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<title>Files and directories</title>
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<para>Paths and file names referred to in the
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documentation.</para>
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<variablelist id='filenames' />
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</refsect1>
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<refsect1>
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<title>Colophon</title>
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<para id='colophon' />
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</refsect1>
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</refentry>
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'''
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COLOPHON = '''\
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This index contains {count} entries in {sections} sections,
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referring to {pages} individual manual pages.
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'''
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def _extract_directives(directive_groups, formatting, page):
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t = xml_parse(page)
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section = t.find('./refmeta/manvolnum').text
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pagename = t.find('./refmeta/refentrytitle').text
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storopt = directive_groups['options']
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for variablelist in t.iterfind('.//variablelist'):
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klass = variablelist.attrib.get('class')
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storvar = directive_groups[klass or 'miscellaneous']
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# <option>s go in OPTIONS, unless class is specified
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for xpath, stor in (('./varlistentry/term/varname', storvar),
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('./varlistentry/term/option',
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storvar if klass else storopt)):
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for name in variablelist.iterfind(xpath):
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text = re.sub(r'([= ]).*', r'\1', name.text).rstrip()
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stor[text].append((pagename, section))
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if text not in formatting:
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# use element as formatted display
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if name.text[-1] in '= ':
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name.clear()
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else:
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name.tail = ''
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name.text = text
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formatting[text] = name
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storfile = directive_groups['filenames']
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for xpath, absolute_only in (('.//refsynopsisdiv//filename', False),
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('.//refsynopsisdiv//command', False),
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('.//filename', True)):
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for name in t.iterfind(xpath):
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if absolute_only and not (name.text and name.text.startswith('/')):
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continue
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if name.attrib.get('noindex'):
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continue
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name.tail = ''
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if name.text:
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if name.text.endswith('*'):
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name.text = name.text[:-1]
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if not name.text.startswith('.'):
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text = name.text.partition(' ')[0]
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if text != name.text:
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name.clear()
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name.text = text
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if text.endswith('/'):
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text = text[:-1]
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storfile[text].append((pagename, section))
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if text not in formatting:
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# use element as formatted display
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formatting[text] = name
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else:
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text = ' '.join(name.itertext())
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storfile[text].append((pagename, section))
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formatting[text] = name
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storfile = directive_groups['constants']
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for name in t.iterfind('.//constant'):
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if name.attrib.get('noindex'):
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continue
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name.tail = ''
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if name.text.startswith('('): # a cast, strip it
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name.text = name.text.partition(' ')[2]
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storfile[name.text].append((pagename, section))
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formatting[name.text] = name
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def _make_section(template, name, directives, formatting):
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varlist = template.find(".//*[@id='{}']".format(name))
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for varname, manpages in sorted(directives.items()):
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entry = tree.SubElement(varlist, 'varlistentry')
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term = tree.SubElement(entry, 'term')
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display = deepcopy(formatting[varname])
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term.append(display)
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para = tree.SubElement(tree.SubElement(entry, 'listitem'), 'para')
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b = None
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for manpage, manvolume in sorted(set(manpages)):
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if b is not None:
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b.tail = ', '
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b = tree.SubElement(para, 'citerefentry')
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c = tree.SubElement(b, 'refentrytitle')
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c.text = manpage
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c.attrib['target'] = varname
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d = tree.SubElement(b, 'manvolnum')
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d.text = manvolume
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entry.tail = '\n\n'
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def _make_colophon(template, groups):
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count = 0
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pages = set()
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for group in groups:
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count += len(group)
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for pagelist in group.values():
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pages |= set(pagelist)
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para = template.find(".//para[@id='colophon']")
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para.text = COLOPHON.format(count=count,
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sections=len(groups),
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pages=len(pages))
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def _make_page(template, directive_groups, formatting):
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"""Create an XML tree from directive_groups.
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directive_groups = {
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'class': {'variable': [('manpage', 'manvolume'), ...],
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'variable2': ...},
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...
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}
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"""
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for name, directives in directive_groups.items():
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_make_section(template, name, directives, formatting)
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_make_colophon(template, directive_groups.values())
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return template
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def make_page(*xml_files):
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"Extract directives from xml_files and return XML index tree."
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template = tree.fromstring(TEMPLATE)
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names = [vl.get('id') for vl in template.iterfind('.//variablelist')]
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directive_groups = {name:collections.defaultdict(list)
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for name in names}
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formatting = {}
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for page in xml_files:
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try:
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_extract_directives(directive_groups, formatting, page)
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except Exception:
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raise ValueError("failed to process " + page)
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return _make_page(template, directive_groups, formatting)
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if __name__ == '__main__':
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with open(sys.argv[1], 'wb') as f:
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f.write(xml_print(make_page(*sys.argv[2:])))
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