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#!/usr/bin/env python3
# SPDX-License-Identifier: LGPL-2.1-or-later
import collections
import glob
import pprint
import sys
from pathlib import Path
from xml_helper import xml_parse
def man(page, number):
return f'{page}.{number}'
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 '#')
MESON_HEADER = '''\
# SPDX-License-Identifier: LGPL-2.1-or-later
# Do not edit. Generated by update-man-rules.py.
# Update with:
# ninja -C build update-man-rules
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))
def main():
source_glob = sys.argv[1]
target = Path(sys.argv[2])
pages = glob.glob(source_glob)
pages = (p for p in pages
if Path(p).name not in {
'systemd.directives.xml',
'systemd.index.xml',
'directives-template.xml'})
rules = create_rules(pages)
dist_files = (Path(p).name for p in pages)
text = make_mesonfile(rules, dist_files)
tmp = target.with_suffix('.tmp')
tmp.write_text(text)
tmp.rename(target)
if __name__ == '__main__':
main()
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