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 import re
  25 MDASH = ' — ' if sys.version_info.major >= 3 else ' -- '
  26
  27 TEMPLATE = '''\
  28 <refentry id="systemd.index" conditional="HAVE_PYTHON">
  29
  30   <refentryinfo>
  31     <title>systemd.index</title>
  32     <productname>systemd</productname>
  33
  34     <authorgroup>
  35       <author>
  36         <contrib>Developer</contrib>
  37         <firstname>Lennart</firstname>
  38         <surname>Poettering</surname>
  39         <email>lennart@poettering.net</email>
  40       </author>
  41     </authorgroup>
  42   </refentryinfo>
  43
  44   <refmeta>
  45     <refentrytitle>systemd.index</refentrytitle>
  46     <manvolnum>7</manvolnum>
  47   </refmeta>
  48
  49   <refnamediv>
  50     <refname>systemd.index</refname>
  51     <refpurpose>List all manpages from the systemd project</refpurpose>
  52   </refnamediv>
  53 </refentry>
  54 '''
  55
  56 SUMMARY = '''\
  57   <refsect1>
  58     <title>See Also</title>
  59     <para>
  60       <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
  61     </para>
  62
  63     <para id='counts' />
  64   </refsect1>
  65 '''
  66
  67 COUNTS = '\
  68 This index contains {count} entries, referring to {pages} individual manual pages.'
  69
  70 def check_id(page, t):
  71     id = t.getroot().get('id')
  72     if not re.search('/' + id + '[.]', page):
  73         raise ValueError("id='{}' is not the same as page name '{}'".format(id, page))
  74
  75 def make_index(pages):
  76     index = collections.defaultdict(list)
  77     for p in pages:
  78         t = tree.parse(p)
  79         check_id(p, t)
  80         section = t.find('./refmeta/manvolnum').text
  81         refname = t.find('./refnamediv/refname').text
  82         purpose = ' '.join(t.find('./refnamediv/refpurpose').text.split())
  83         for f in t.findall('./refnamediv/refname'):
  84             infos = (f.text, section, purpose, refname)
  85             index[f.text[0].upper()].append(infos)
  86     return index
  87
  88 def add_letter(template, letter, pages):
  89     refsect1 = tree.SubElement(template, 'refsect1')
  90     title = tree.SubElement(refsect1, 'title')
  91     title.text = letter
  92     para = tree.SubElement(refsect1, 'para')
  93     for info in sorted(pages, key=lambda info: str.lower(info[0])):
  94         refname, section, purpose, realname = info
  95
  96         b = tree.SubElement(para, 'citerefentry')
  97         c = tree.SubElement(b, 'refentrytitle')
  98         c.text = refname
  99         d = tree.SubElement(b, 'manvolnum')
 100         d.text = section
 101
 102         b.tail = MDASH + purpose # + ' (' + p + ')'
 103
 104         tree.SubElement(para, 'sbr')
 105
 106 def add_summary(template, indexpages):
 107     count = 0
 108     pages = set()
 109     for group in indexpages:
 110         count += len(group)
 111         for info in group:
 112             refname, section, purpose, realname = info
 113             pages.add((realname, section))
 114
 115     refsect1 = tree.fromstring(SUMMARY)
 116     template.append(refsect1)
 117
 118     para = template.find(".//para[@id='counts']")
 119     para.text = COUNTS.format(count=count, pages=len(pages))
 120
 121 def make_page(xml_files):
 122     template = tree.fromstring(TEMPLATE)
 123     index = make_index(xml_files)
 124
 125     for letter in sorted(index):
 126         add_letter(template, letter, index[letter])
 127
 128     add_summary(template, index.values())
 129
 130     return template
 131
 132 if __name__ == '__main__':
 133     tree.dump(make_page(sys.argv[1:]))