make-man-rules.py

   1 #  -*- Mode: python; coding: utf-8; indent-tabs-mode: nil -*- */
   2 #
   3 #  This file is part of systemd.
   4 #
   5 #  Copyright 2013 Zbigniew Jędrzejewski-Szmek
   6 #
   7 #  systemd is free software; you can redistribute it and/or modify it
   8 #  under the terms of the GNU Lesser General Public License as published by
   9 #  the Free Software Foundation; either version 2.1 of the License, or
  10 #  (at your option) any later version.
  11 #
  12 #  systemd is distributed in the hope that it will be useful, but
  13 #  WITHOUT ANY WARRANTY; without even the implied warranty of
  14 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15 #  Lesser General Public License for more details.
  16 #
  17 #  You should have received a copy of the GNU Lesser General Public License
  18 #  along with systemd; If not, see <http://www.gnu.org/licenses/>.
  19
  20 from __future__ import print_function
  21 import collections
  22 import sys
  23 from xml_helper import *
  24
  25 SECTION = '''\
  26 MANPAGES += \\
  27         {manpages}
  28 MANPAGES_ALIAS += \\
  29         {aliases}
  30 {rules}
  31 {htmlrules}
  32 '''
  33
  34 CONDITIONAL = '''\
  35 if {conditional}
  36 ''' \
  37 + SECTION + \
  38 '''\
  39 endif
  40 '''
  41
  42 HEADER = '''\
  43 # Do not edit. Generated by make-man-rules.py.
  44 # Regenerate with 'make all update-man-list'.
  45
  46 '''
  47
  48 HTML_ALIAS_RULE = '''\
  49 {}.html: {}.html
  50         $(html-alias)
  51 '''
  52
  53 def man(page, number):
  54     return 'man/{}.{}'.format(page, number)
  55
  56 def add_rules(rules, name):
  57     xml = xml_parse(name)
  58     # print('parsing {}'.format(name), file=sys.stderr)
  59     conditional = xml.getroot().get('conditional') or ''
  60     rulegroup = rules[conditional]
  61     refmeta = xml.find('./refmeta')
  62     title = refmeta.find('./refentrytitle').text
  63     number = refmeta.find('./manvolnum').text
  64     refnames = xml.findall('./refnamediv/refname')
  65     target = man(refnames[0].text, number)
  66     if title != refnames[0].text:
  67         raise ValueError('refmeta and refnamediv disagree: ' + name)
  68     for refname in refnames:
  69         assert all(refname not in group
  70                    for group in rules.values()), "duplicate page name"
  71         alias = man(refname.text, number)
  72         rulegroup[alias] = target
  73         # print('{} => {} [{}]'.format(alias, target, conditional), file=sys.stderr)
  74
  75 def create_rules(*xml_files):
  76     " {conditional => {alias-name => source-name}} "
  77     rules = collections.defaultdict(dict)
  78     for name in xml_files:
  79         add_rules(rules, name)
  80     return rules
  81
  82 def mjoin(files):
  83     return ' \\\n\t'.join(sorted(files) or '#')
  84
  85 def make_makefile(rules):
  86     return HEADER + '\n'.join(
  87         (CONDITIONAL if conditional else SECTION).format(
  88             manpages=mjoin(set(rulegroup.values())),
  89             aliases=mjoin(k for k,v in rulegroup.items() if k != v),
  90             rules='\n'.join('{}: {}'.format(k,v)
  91                             for k,v in sorted(rulegroup.items())
  92                             if k != v),
  93             htmlrules='\n'.join(HTML_ALIAS_RULE.format(k[:-2],v[:-2])
  94                                 for k,v in sorted(rulegroup.items())
  95                                 if k != v),
  96             conditional=conditional)
  97         for conditional,rulegroup in sorted(rules.items()))
  98
  99 if __name__ == '__main__':
 100     rules = create_rules(*sys.argv[1:])
 101     print(make_makefile(rules), end='')