Commit d9cfd694 authored by Zbigniew Jędrzejewski-Szmek's avatar Zbigniew Jędrzejewski-Szmek
Browse files

man: generate an index of directives

Systemd has a large (and growing) number of manpages. Sometimes it's
not immediately obvious, where to look for a directive. Especially,
when something is described in more than one place. Making sense of
all the settings should be easier with an index.
parent 98a77df5
......@@ -684,8 +684,32 @@ man/index.html: make-man-index.py $(XML_FILES)
$(AM_V_at)$(MKDIR_P) $(dir $@)
$(AM_V_GEN)$(PYTHON) $^ > $@
MANPAGES += \
man/systemd.directives.5
EXTRA_DIST += \
man/index.html
XML_DIRECTIVE_FILES = \
man/systemd.unit.xml \
man/systemd.service.xml \
man/systemd.socket.xml \
man/systemd.mount.xml \
man/systemd.automount.xml \
man/systemd.swap.xml \
man/systemd.target.xml \
man/systemd.path.xml \
man/systemd.timer.xml \
man/systemd.snapshot.xml \
man/systemd.exec.xml
man/systemd.directives.xml: make-directive-index.py $(XML_DIRECTIVE_FILES)
$(AM_V_at)$(MKDIR_P) $(dir $@)
$(AM_V_GEN)$(PYTHON) $^ > $@
EXTRA_DIST += \
man/systemd.directives.xml
endif
endif
......@@ -695,7 +719,8 @@ EXTRA_DIST += \
${XML_FILES:.xml=.html} \
$(MANPAGES) \
$(MANPAGES_ALIAS) \
make-man-index.py
make-man-index.py \
make-directive-index.py
# ------------------------------------------------------------------------------
noinst_LTLIBRARIES += \
......
# -*- coding: utf-8 -*-
import sys
import collections
import xml.etree.ElementTree as tree
TEMPLATE = '''\
<refentry id="systemd.directives">
<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>5</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>
</refentry>
'''
def _extract_directives(directive_groups, page):
t = tree.parse(page)
section = t.find('./refmeta/manvolnum').text
pagename = t.find('./refmeta/refentrytitle').text
for variablelist in t.iterfind('.//variablelist'):
klass = variablelist.attrib.get('class') or 'unit-directives'
stor = directive_groups[klass]
for varname in variablelist.iterfind('./varlistentry/term/varname'):
text = ''.join(varname.text.partition('=')[:2])
stor[text].append((pagename, section))
def _make_section(refentry, name, directives):
varlist = refentry.find(".//*[@id='{}']".format(name))
for varname, manpages in sorted(directives.items()):
entry = tree.SubElement(varlist, 'varlistentry')
a = tree.SubElement(tree.SubElement(entry, 'term'), 'varname')
a.text = varname
para = tree.SubElement(tree.SubElement(entry, 'listitem'), 'para')
b = None
for manpage, manvolume in sorted(manpages):
if b is not None:
b.tail = ', '
b = tree.SubElement(para, 'citerefentry')
c = tree.SubElement(b, 'refentrytitle')
c.text = manpage
d = tree.SubElement(b, 'manvolnum')
d.text = manvolume
entry.tail = '\n\n'
def _make_page(directive_groups):
"""Create an XML tree from directive_groups.
directive_groups = {
'class': {'variable': [('manpage', 'manvolume'), ...],
'variable2': ...},
...
}
"""
refentry = tree.fromstring(TEMPLATE)
for name, directives in directive_groups.items():
_make_section(refentry, name, directives)
return refentry
def make_page(xml_files):
"Extract directives from xml_files and return XML index tree."
directive_groups = {name:collections.defaultdict(list)
for name in ['unit-directives',
]}
for page in xml_files:
_extract_directives(directive_groups, page)
return _make_page(directive_groups)
if __name__ == '__main__':
tree.dump(make_page(sys.argv[1:]))
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