289 lines
9.4 KiB
Python
Executable File
289 lines
9.4 KiB
Python
Executable File
#!/usr/bin/env python3
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# SPDX-License-Identifier: LGPL-2.1+
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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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</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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