1
0
mirror of https://github.com/systemd/systemd.git synced 2024-12-22 17:35:35 +03:00
systemd/tools/update-dbus-docs.py
Zbigniew Jędrzejewski-Szmek fe45f8dc9b man: drop whitespace from final <programlisting> lines
In the troff output, this doesn't seem to make any difference. But in the
html output, the whitespace is sometimes preserved, creating an additional
gap before the following content. Drop it everywhere to avoid this.
2024-11-08 14:14:36 +01:00

371 lines
13 KiB
Python
Executable File

#!/usr/bin/env python3
# SPDX-License-Identifier: LGPL-2.1-or-later
# pylint: disable=superfluous-parens,consider-using-with
import argparse
import collections
import sys
import os
import subprocess
import io
try:
from lxml import etree
except ModuleNotFoundError as e:
etree = e
try:
from shlex import join as shlex_join
except ImportError as e:
shlex_join = e
try:
from shlex import quote as shlex_quote
except ImportError as e:
shlex_quote = e
class NoCommand(Exception):
pass
BORING_INTERFACES = [
'org.freedesktop.DBus.Peer',
'org.freedesktop.DBus.Introspectable',
'org.freedesktop.DBus.Properties',
]
RED = '\x1b[31m'
GREEN = '\x1b[32m'
YELLOW = '\x1b[33m'
RESET = '\x1b[39m'
arguments = None
def xml_parser():
return etree.XMLParser(no_network=True,
remove_comments=False,
strip_cdata=False,
resolve_entities=False)
def print_method(declarations, elem, *, prefix, file, is_signal=False):
name = elem.get('name')
klass = 'signal' if is_signal else 'method'
declarations[klass].append(name)
# @org.freedesktop.systemd1.Privileged("true")
# SetShowStatus(in s mode);
for anno in elem.findall('./annotation'):
anno_name = anno.get('name')
anno_value = anno.get('value')
print(f'''{prefix}@{anno_name}("{anno_value}")''', file=file)
print(f'''{prefix}{name}(''', file=file, end='')
lead = ',\n' + prefix + ' ' * len(name) + ' '
for num, arg in enumerate(elem.findall('./arg')):
argname = arg.get('name')
if argname is None:
if arguments.print_errors:
print(f'method {name}: argument {num+1} has no name', file=sys.stderr)
argname = 'UNNAMED'
argtype = arg.get('type')
if not is_signal:
direction = arg.get('direction')
print(f'''{lead if num > 0 else ''}{direction:3} {argtype} {argname}''', file=file, end='')
else:
print(f'''{lead if num > 0 else ''}{argtype} {argname}''', file=file, end='')
print(');', file=file)
ACCESS_MAP = {
'read' : 'readonly',
'write' : 'readwrite',
}
def value_ellipsis(prop_type):
if prop_type == 's':
return "'...'"
if prop_type[0] == 'a':
inner = value_ellipsis(prop_type[1:])
return f"[{inner}{', ...' if inner != '...' else ''}]"
return '...'
def print_property(declarations, elem, *, prefix, file):
prop_name = elem.get('name')
prop_type = elem.get('type')
prop_access = elem.get('access')
declarations['property'].append(prop_name)
# @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
# @org.freedesktop.systemd1.Privileged("true")
# readwrite b EnableWallMessages = false;
for anno in elem.findall('./annotation'):
anno_name = anno.get('name')
anno_value = anno.get('value')
print(f'''{prefix}@{anno_name}("{anno_value}")''', file=file)
prop_access = ACCESS_MAP.get(prop_access, prop_access)
print(f'''{prefix}{prop_access} {prop_type} {prop_name} = {value_ellipsis(prop_type)};''', file=file)
def print_interface(iface, *, prefix, file, print_boring, only_interface, declarations):
name = iface.get('name')
is_boring = (name in BORING_INTERFACES or
only_interface is not None and name != only_interface)
if is_boring and print_boring:
print(f'''{prefix}interface {name} {{ ... }};''', file=file)
elif not is_boring and not print_boring:
print(f'''{prefix}interface {name} {{''', file=file)
prefix2 = prefix + ' '
for num, elem in enumerate(iface.findall('./method')):
if num == 0:
print(f'''{prefix2}methods:''', file=file)
print_method(declarations, elem, prefix=prefix2 + ' ', file=file)
for num, elem in enumerate(iface.findall('./signal')):
if num == 0:
print(f'''{prefix2}signals:''', file=file)
print_method(declarations, elem, prefix=prefix2 + ' ', file=file, is_signal=True)
for num, elem in enumerate(iface.findall('./property')):
if num == 0:
print(f'''{prefix2}properties:''', file=file)
print_property(declarations, elem, prefix=prefix2 + ' ', file=file)
print(f'''{prefix}}};''', file=file)
def check_documented(document, declarations, stats, interface, missing_version):
missing = []
sections = document.findall("refsect1")
history_section = document.find("refsect1[title = 'History']")
if history_section is not None:
sections.remove(history_section)
for klass, items in declarations.items():
stats['total'] += len(items)
for item in items:
if klass in ('method', 'signal'):
elem = 'function'
item_repr = f'{item}()'
# Find all functions/signals in <function> elements that are not
# suffixed with '()' and fix them
for section in sections:
element = section.find(f".//{elem}[. = '{item}']")
if element is not None:
element.text = item_repr
elif klass == 'property':
elem = 'varname'
item_repr = item
else:
assert False, (klass, item)
predicate = f".//{elem}[. = '{item_repr}']"
if not any(section.find(predicate) is not None for section in sections):
if arguments.print_errors:
print(f'{klass} {item} is not documented :(')
missing.append((klass, item))
if history_section is None or history_section.find(predicate) is None:
missing_version.append(f"{interface}.{item_repr}")
stats['missing'] += len(missing)
return missing
def xml_to_text(destination, xml, *, only_interface=None):
file = io.StringIO()
declarations = collections.defaultdict(list)
interfaces = []
print(f'''node {destination} {{''', file=file)
for print_boring in [False, True]:
for iface in xml.findall('./interface'):
print_interface(iface, prefix=' ', file=file,
print_boring=print_boring,
only_interface=only_interface,
declarations=declarations)
name = iface.get('name')
if not name in BORING_INTERFACES:
interfaces.append(name)
print('''};''', file=file)
return file.getvalue(), declarations, interfaces
def subst_output(document, programlisting, stats, missing_version):
executable = programlisting.get('executable', None)
if executable is None:
# Not our thing
return
executable = programlisting.get('executable')
node = programlisting.get('node')
interface = programlisting.get('interface')
argv = [f'{arguments.build_dir}/{executable}', f'--bus-introspect={interface}']
if isinstance(shlex_join, Exception):
print(f'COMMAND: {" ".join(shlex_quote(arg) for arg in argv)}')
else:
print(f'COMMAND: {shlex_join(argv)}')
try:
out = subprocess.check_output(argv, universal_newlines=True)
except FileNotFoundError:
print(f'{executable} not found, ignoring', file=sys.stderr)
return
xml = etree.fromstring(out, parser=xml_parser())
new_text, declarations, interfaces = xml_to_text(node, xml, only_interface=interface)
programlisting.text = '\n' + new_text
if declarations:
missing = check_documented(document, declarations, stats, interface, missing_version)
parent = programlisting.getparent()
# delete old comments
for child in parent:
if child.tag is etree.Comment and 'Autogenerated' in child.text:
parent.remove(child)
if child.tag is etree.Comment and 'not documented' in child.text:
parent.remove(child)
if child.tag == "variablelist" and child.attrib.get("generated", False) == "True":
parent.remove(child)
# insert pointer for systemd-directives generation
the_tail = programlisting.tail #tail is erased by addnext, so save it here.
prev_element = etree.Comment("Autogenerated cross-references for systemd.directives, do not edit")
programlisting.addnext(prev_element)
programlisting.tail = the_tail
for interface in interfaces:
variablelist = etree.Element("variablelist")
variablelist.attrib['class'] = 'dbus-interface'
variablelist.attrib['generated'] = 'True'
variablelist.attrib['extra-ref'] = interface
prev_element.addnext(variablelist)
prev_element.tail = the_tail
prev_element = variablelist
for decl_type,decl_list in declarations.items():
for declaration in decl_list:
variablelist = etree.Element("variablelist")
variablelist.attrib['class'] = 'dbus-'+decl_type
variablelist.attrib['generated'] = 'True'
if decl_type in ('method', 'signal'):
variablelist.attrib['extra-ref'] = declaration + '()'
else:
variablelist.attrib['extra-ref'] = declaration
prev_element.addnext(variablelist)
prev_element.tail = the_tail
prev_element = variablelist
last_element = etree.Comment("End of Autogenerated section")
prev_element.addnext(last_element)
prev_element.tail = the_tail
last_element.tail = the_tail
# insert comments for undocumented items
for item in reversed(missing):
comment = etree.Comment(f'{item[0]} {item[1]} is not documented!')
comment.tail = programlisting.tail
parent.insert(parent.index(programlisting) + 1, comment)
def process(page, missing_version):
src = open(page).read()
xml = etree.fromstring(src, parser=xml_parser())
# print('parsing {}'.format(name), file=sys.stderr)
if xml.tag != 'refentry':
return None
stats = collections.Counter()
pls = xml.findall('.//programlisting')
for pl in pls:
subst_output(xml, pl, stats, missing_version)
out_text = etree.tostring(xml, encoding='unicode')
# massage format to avoid some lxml whitespace handling idiosyncrasies
# https://bugs.launchpad.net/lxml/+bug/526799
out_text = (src[:src.find('<refentryinfo')] +
out_text[out_text.find('<refentryinfo'):] +
'\n')
if not arguments.test:
with open(page, 'w') as out:
out.write(out_text)
return { "stats" : stats, "modified" : out_text != src }
def parse_args():
p = argparse.ArgumentParser()
p.add_argument('--test', action='store_true',
help='only verify that everything is up2date')
p.add_argument('--build-dir', default='build')
p.add_argument('pages', nargs='+')
opts = p.parse_args()
opts.print_errors = not opts.test
return opts
def main():
# pylint: disable=global-statement
global arguments
arguments = parse_args()
for item in (etree, shlex_quote):
if isinstance(item, Exception):
print(item, file=sys.stderr)
sys.exit(77 if arguments.test else 1)
if not os.path.exists(f'{arguments.build_dir}/systemd'):
sys.exit(f"{arguments.build_dir}/systemd doesn't exist. Use --build-dir=.")
missing_version = []
stats = {page.split('/')[-1] : process(page, missing_version) for page in arguments.pages}
ignore_list = open(os.path.join(os.path.dirname(__file__), 'dbus_ignorelist')).read().split()
missing_version = [x for x in missing_version if x not in ignore_list]
for missing in missing_version:
print(f"{RED}Missing version information for {missing}{RESET}")
if missing_version:
sys.exit(1)
# Let's print all statistics at the end
mlen = max(len(page) for page in stats)
total = sum((item['stats'] for item in stats.values()), collections.Counter())
total = 'total', { "stats" : total, "modified" : False }
modified = []
classification = 'OUTDATED' if arguments.test else 'MODIFIED'
for page, info in sorted(stats.items()) + [total]:
m = info['stats']['missing']
t = info['stats']['total']
p = page + ':'
c = classification if info['modified'] else ''
if c:
modified.append(page)
color = RED if m > t/2 else (YELLOW if m else GREEN)
print(f'{color}{p:{mlen + 1}} {t - m}/{t} {c}{RESET}')
if arguments.test and modified:
sys.exit(f'Outdated pages: {", ".join(modified)}\n'
f'Hint: ninja -C {arguments.build_dir} update-dbus-docs')
if __name__ == '__main__':
main()