summaryrefslogtreecommitdiff
path: root/tools/make-man-rules.py
blob: e9e39f10afa87375ac2b91e4d3494ae7613355d3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
#!/usr/bin/env python3
#  -*- Mode: python; coding: utf-8; indent-tabs-mode: nil -*- */
#
#  This file is part of systemd.
#
#  Copyright 2013, 2017 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/>.

from __future__ import print_function
import collections
import sys
import os.path
import pprint
from xml_helper import *

SECTION = '''\
MANPAGES += \\
	{manpages}
MANPAGES_ALIAS += \\
	{aliases}
{rules}
{htmlrules}
'''

CONDITIONAL = '''\
if {conditional}
''' \
+ SECTION + \
'''\
endif
'''

HEADER = '''\
# Do not edit. Generated by make-man-rules.py.
# To regenerate:
#   1. Create, update, or remove source .xml files in man/
#   2. Run 'make update-man-list'
#   3. Run 'make man' to generate manpages
#
# To make a man page conditional on a configure switch add
# attribute conditional="ENABLE_WHAT" or conditional="WITH_WHAT"
# to <refentry> element.
'''

HTML_ALIAS_RULE = '''\
{}.html: {}.html
	$(html-alias)
'''

FOOTER = '''\

# Really, do not edit this file.

EXTRA_DIST += \\
	{dist_files}
'''

meson = False

def man(page, number):
    return ('man/' if not meson else '') + '{}.{}'.format(page, number)

def xml(file):
    return ('man/' if not meson else '') + os.path.basename(file)

def add_rules(rules, name):
    xml = xml_parse(name)
    # print('parsing {}'.format(name), file=sys.stderr)
    if xml.getroot().tag != 'refentry':
        return
    conditional = xml.getroot().get('conditional') or ''
    rulegroup = rules[conditional]
    refmeta = xml.find('./refmeta')
    title = refmeta.find('./refentrytitle').text
    number = refmeta.find('./manvolnum').text
    refnames = xml.findall('./refnamediv/refname')
    target = man(refnames[0].text, number)
    if title != refnames[0].text:
        raise ValueError('refmeta and refnamediv disagree: ' + name)
    for refname in refnames:
        assert all(refname not in group
                   for group in rules.values()), "duplicate page name"
        alias = man(refname.text, number)
        rulegroup[alias] = target
        # print('{} => {} [{}]'.format(alias, target, conditional), file=sys.stderr)

def create_rules(xml_files):
    " {conditional => {alias-name => source-name}} "
    rules = collections.defaultdict(dict)
    for name in xml_files:
        try:
            add_rules(rules, name)
        except Exception:
            print("Failed to process", name, file=sys.stderr)
            raise
    return rules

def mjoin(files):
    return ' \\\n\t'.join(sorted(files) or '#')

def make_makefile(rules, dist_files):
    return HEADER + '\n'.join(
        (CONDITIONAL if conditional else SECTION).format(
            manpages=mjoin(set(rulegroup.values())),
            aliases=mjoin(k for k,v in rulegroup.items() if k != v),
            rules='\n'.join('{}: {}'.format(k,v)
                            for k,v in sorted(rulegroup.items())
                            if k != v),
            htmlrules='\n'.join(HTML_ALIAS_RULE.format(k[:-2],v[:-2])
                                for k,v in sorted(rulegroup.items())
                                if k != v),
            conditional=conditional)
        for conditional,rulegroup in sorted(rules.items())
        ) + FOOTER.format(dist_files=mjoin(sorted(dist_files)))

MESON_HEADER = '''\
# Do not edit. Generated by make-man-rules.py.
manpages = ['''

MESON_FOOTER = '''\
]
# Really, do not edit.'''

def make_mesonfile(rules, dist_files):
    # reformat rules as
    # grouped = [ [name, section, [alias...], condition], ...]
    #
    # but first create a dictionary like
    # lists = { (name, condition) => [alias...]
    grouped = collections.defaultdict(list)
    for condition, items in rules.items():
        for alias, name in items.items():
            group = grouped[(name, condition)]
            if name != alias:
                group.append(alias)

    lines = [ [p[0][:-2], p[0][-1], sorted(a[:-2] for a in aliases), p[1]]
              for p, aliases in sorted(grouped.items()) ]
    return '\n'.join((MESON_HEADER, pprint.pformat(lines)[1:-1], MESON_FOOTER))

if __name__ == '__main__':
    meson = sys.argv[1] == '--meson'
    pages = sys.argv[1+meson:]

    rules = create_rules(pages)
    dist_files = (xml(file) for file in pages
                  if not file.endswith(".directives.xml") and
                     not file.endswith(".index.xml"))
    if meson:
        print(make_mesonfile(rules, dist_files))
    else:
        print(make_makefile(rules, dist_files), end='')