build-sys: move python helpers to tools directory

Note that make-man-rules.py is missing in EXTRA_DIST=, this patch
fixes this mistake too.

1 files changed, 320 insertions, 0 deletions

diff --git a/tools/make-directive-index.py b/tools/make-directive-index.py
new file mode 100755
index 0000000000..2ff304fddc
--- /dev/null
+++ b/tools/make-directive-index.py
@@ -0,0 +1,320 @@
+#  -*- 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>crypttab options</title>
+
+                <para>Options which influence mounted filesystems and
+                encrypted volumes.</para>
+
+                <variablelist id='crypttab-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
+            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:])))