make-man-index.py

   1 #  -*- Mode: python; coding: utf-8; indent-tabs-mode: nil -*- */
   2 #
   3 #  This file is part of systemd.
   4 #
   5 #  Copyright 2012 Lennart Poettering
   6 #  Copyright 2013 Zbigniew Jędrzejewski-Szmek
   7 #
   8 #  systemd is free software; you can redistribute it and/or modify it
   9 #  under the terms of the GNU Lesser General Public License as published by
  10 #  the Free Software Foundation; either version 2.1 of the License, or
  11 #  (at your option) any later version.
  12 #
  13 #  systemd is distributed in the hope that it will be useful, but
  14 #  WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16 #  Lesser General Public License for more details.
  17 #
  18 #  You should have received a copy of the GNU Lesser General Public License
  19 #  along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20
  21 import collections
  22 import xml.etree.ElementTree as tree
  23 import sys
  24 MDASH = ' — ' if sys.version_info.major >= 3 else ' -- '
  25
  26 TEMPLATE = '''\
  27 <refentry id="systemd.index">
  28
  29   <refentryinfo>
  30     <title>systemd.index</title>
  31     <productname>systemd</productname>
  32
  33     <authorgroup>
  34       <author>
  35         <contrib>Developer</contrib>
  36         <firstname>Lennart</firstname>
  37         <surname>Poettering</surname>
  38         <email>lennart@poettering.net</email>
  39       </author>
  40     </authorgroup>
  41   </refentryinfo>
  42
  43   <refmeta>
  44     <refentrytitle>systemd.index</refentrytitle>
  45     <manvolnum>7</manvolnum>
  46   </refmeta>
  47
  48   <refnamediv>
  49     <refname>systemd.index</refname>
  50     <refpurpose>List all manpages from the systemd project</refpurpose>
  51   </refnamediv>
  52 </refentry>
  53 '''
  54
  55 SUMMARY = '''\
  56   <refsect1>
  57     <title>See Also</title>
  58     <para>
  59       <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
  60     </para>
  61
  62     <para id='counts' />
  63   </refsect1>
  64 '''
  65
  66 COUNTS = '\
  67 This index contains {count} entries, referring to {pages} individual manual pages.'
  68
  69 def make_index(pages):
  70     index = collections.defaultdict(list)
  71     for p in pages:
  72         t = tree.parse(p)
  73         section = t.find('./refmeta/manvolnum').text
  74         refname = t.find('./refnamediv/refname').text
  75         purpose = ' '.join(t.find('./refnamediv/refpurpose').text.split())
  76         for f in t.findall('./refnamediv/refname'):
  77             infos = (f.text, section, purpose, refname)
  78             index[f.text[0].upper()].append(infos)
  79     return index
  80
  81 def add_letter(template, letter, pages):
  82     refsect1 = tree.SubElement(template, 'refsect1')
  83     title = tree.SubElement(refsect1, 'title')
  84     title.text = letter
  85     para = tree.SubElement(refsect1, 'para')
  86     for info in sorted(pages, key=lambda info: str.lower(info[0])):
  87         refname, section, purpose, realname = info
  88
  89         b = tree.SubElement(para, 'citerefentry')
  90         c = tree.SubElement(b, 'refentrytitle')
  91         c.text = refname
  92         d = tree.SubElement(b, 'manvolnum')
  93         d.text = section
  94
  95         b.tail = MDASH + purpose # + ' (' + p + ')'
  96
  97         tree.SubElement(para, 'sbr')
  98
  99 def add_summary(template, indexpages):
 100     count = 0
 101     pages = set()
 102     for group in indexpages:
 103         count += len(group)
 104         for info in group:
 105             refname, section, purpose, realname = info
 106             pages.add((realname, section))
 107
 108     refsect1 = tree.fromstring(SUMMARY)
 109     template.append(refsect1)
 110
 111     para = template.find(".//para[@id='counts']")
 112     para.text = COUNTS.format(count=count, pages=len(pages))
 113
 114 def make_page(xml_files):
 115     template = tree.fromstring(TEMPLATE)
 116     index = make_index(xml_files)
 117
 118     for letter in sorted(index):
 119         add_letter(template, letter, index[letter])
 120
 121     add_summary(template, index.values())
 122
 123     return template
 124
 125 if __name__ == '__main__':
 126     tree.dump(make_page(sys.argv[1:]))