esp-idf/docs/build_docs.py
Marius Vikhammer 548fd02d10 docs: initial update of programming guide for C3
Updates "front page" content, get-started, and api-guides with C3 content

Enable building and publishing of C3 docs in CI
2021-02-01 15:40:02 +08:00

467 lines
19 KiB
Python
Executable File

#!/usr/bin/env python3
# coding=utf-8
#
# Top-level docs builder
#
# This is just a front-end to sphinx-build that can call it multiple times for different language/target combinations
#
# Will build out to _build/LANG/TARGET by default
#
# Specific custom docs functionality should be added in conf_common.py or in a Sphinx extension, not here.
#
# Copyright 2020 Espressif Systems (Shanghai) PTE LTD
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
from __future__ import print_function
import argparse
import locale
import math
import multiprocessing
import os
import os.path
import re
import subprocess
import sys
from collections import namedtuple
from packaging import version
LANGUAGES = ['en', 'zh_CN']
TARGETS = ['esp32', 'esp32s2', 'esp32c3']
SPHINX_WARN_LOG = 'sphinx-warning-log.txt'
SPHINX_SANITIZED_LOG = 'sphinx-warning-log-sanitized.txt'
SPHINX_KNOWN_WARNINGS = os.path.join(os.environ['IDF_PATH'], 'docs', 'sphinx-known-warnings.txt')
DXG_WARN_LOG = 'doxygen-warning-log.txt'
DXG_SANITIZED_LOG = 'doxygen-warning-log-sanitized.txt'
DXG_KNOWN_WARNINGS = os.path.join(os.environ['IDF_PATH'], 'docs', 'doxygen-known-warnings.txt')
DXG_CI_VERSION = version.parse('1.8.11')
LogMessage = namedtuple('LogMessage', 'original_text sanitized_text')
languages = LANGUAGES
targets = TARGETS
def main():
# check Python dependencies for docs
try:
subprocess.check_call([sys.executable,
os.path.join(os.environ['IDF_PATH'],
'tools',
'check_python_dependencies.py'),
'-r',
'{}/docs/requirements.txt'.format(os.environ['IDF_PATH'])
])
except subprocess.CalledProcessError:
raise SystemExit(2) # stdout will already have these errors
# This is not the only way to make sure that all files opened by Python are treated as UTF-8, but the other way is passing encoding='utf-8' to all open()
# functions and this way makes Python 2 compatibility really tough if there is any code that assumes text files contain strings (kconfiglib assumes this).
# The reason for that is that you need to import io.open() to support the encoding argument on Python 2, and this function always uses Py2's unicode
# type not the str type.
if ('UTF-8' not in locale.getlocale()) and ('utf8' not in locale.getlocale()):
raise RuntimeError("build_docs.py requires the default locale's encoding to be UTF-8.\n" +
' - Linux. Setting environment variable LC_ALL=C.UTF-8 when running build_docs.py may be ' +
'enough to fix this.\n'
' - Windows. Possible solution for the Windows 10 starting version 1803. Go to ' +
'Control Panel->Clock and Region->Region->Administrative->Change system locale...; ' +
'Check `Beta: Use Unicode UTF-8 for worldwide language support` and reboot')
parser = argparse.ArgumentParser(description='build_docs.py: Build IDF docs', prog='build_docs.py')
parser.add_argument('--language', '-l', choices=LANGUAGES, required=False)
parser.add_argument('--target', '-t', choices=TARGETS, required=False)
parser.add_argument('--build-dir', '-b', type=str, default='_build')
parser.add_argument('--source-dir', '-s', type=str, default='')
parser.add_argument('--builders', '-bs', nargs='+', type=str, default=['html'],
help='List of builders for Sphinx, e.g. html or latex, for latex a PDF is also generated')
parser.add_argument('--sphinx-parallel-builds', '-p', choices=['auto'] + [str(x) for x in range(8)],
help='Parallel Sphinx builds - number of independent Sphinx builds to run', default='auto')
parser.add_argument('--sphinx-parallel-jobs', '-j', choices=['auto'] + [str(x) for x in range(8)],
help='Sphinx parallel jobs argument - number of threads for each Sphinx build to use', default='1')
parser.add_argument('--input-docs', '-i', nargs='+', default=[''],
help='List of documents to build relative to the doc base folder, i.e. the language folder. Defaults to all documents')
action_parsers = parser.add_subparsers(dest='action')
build_parser = action_parsers.add_parser('build', help='Build documentation')
build_parser.add_argument('--check-warnings-only', '-w', action='store_true')
action_parsers.add_parser('linkcheck', help='Check links (a current IDF revision should be uploaded to GitHub)')
action_parsers.add_parser('gh-linkcheck', help='Checking for hardcoded GitHub links')
args = parser.parse_args()
global languages
if args.language is None:
print('Building all languages')
languages = LANGUAGES
else:
languages = [args.language]
global targets
if args.target is None:
print('Building all targets')
targets = TARGETS
else:
targets = [args.target]
if args.action == 'build' or args.action is None:
if args.action is None:
args.check_warnings_only = False
sys.exit(action_build(args))
if args.action == 'linkcheck':
sys.exit(action_linkcheck(args))
if args.action == 'gh-linkcheck':
sys.exit(action_gh_linkcheck(args))
def parallel_call(args, callback):
num_sphinx_builds = len(languages) * len(targets)
num_cpus = multiprocessing.cpu_count()
if args.sphinx_parallel_builds == 'auto':
# at most one sphinx build per CPU, up to the number of CPUs
args.sphinx_parallel_builds = min(num_sphinx_builds, num_cpus)
else:
args.sphinx_parallel_builds = int(args.sphinx_parallel_builds)
# Force -j1 because sphinx works incorrectly
args.sphinx_parallel_jobs = 1
if args.sphinx_parallel_jobs == 'auto':
# N CPUs per build job, rounded up - (maybe smarter to round down to avoid contention, idk)
args.sphinx_parallel_jobs = int(math.ceil(num_cpus / args.sphinx_parallel_builds))
else:
args.sphinx_parallel_jobs = int(args.sphinx_parallel_jobs)
print('Will use %d parallel builds and %d jobs per build' % (args.sphinx_parallel_builds, args.sphinx_parallel_jobs))
pool = multiprocessing.Pool(args.sphinx_parallel_builds)
if args.sphinx_parallel_jobs > 1:
print('WARNING: Sphinx parallel jobs currently produce incorrect docs output with Sphinx 1.8.5')
# make a list of all combinations of build_docs() args as tuples
#
# there's probably a fancy way to do this with itertools but this way is actually readable
entries = []
for target in targets:
for language in languages:
build_dir = os.path.realpath(os.path.join(args.build_dir, language, target))
source_dir = os.path.join(os.path.abspath(os.path.dirname(__file__)), args.source_dir, language)
entries.append((language, target, build_dir, source_dir, args.sphinx_parallel_jobs, args.builders, args.input_docs))
print(entries)
errcodes = pool.map(callback, entries)
print(errcodes)
is_error = False
for ret in errcodes:
if ret != 0:
print('\nThe following language/target combinations failed to build:')
is_error = True
break
if is_error:
for ret, entry in zip(errcodes, entries):
if ret != 0:
print('language: %s, target: %s, errcode: %d' % (entry[0], entry[1], ret))
# Don't re-throw real error code from each parallel process
return 1
else:
return 0
def sphinx_call(language, target, build_dir, src_dir, sphinx_parallel_jobs, buildername, input_docs):
# Note: because this runs in a multiprocessing Process, everything which happens here should be isolated to a single process
# (ie it doesn't matter if Sphinx is using global variables, as they're it's own copy of the global variables)
# wrap stdout & stderr in a way that lets us see which build_docs instance they come from
#
# this doesn't apply to subprocesses, they write to OS stdout & stderr so no prefix appears
prefix = '%s/%s: ' % (language, target)
print('Building in build_dir: %s' % (build_dir))
try:
os.makedirs(build_dir)
except OSError:
pass
environ = {}
environ.update(os.environ)
environ['BUILDDIR'] = build_dir
args = [sys.executable, '-u', '-m', 'sphinx.cmd.build',
'-j', str(sphinx_parallel_jobs),
'-b', buildername,
'-d', os.path.join(build_dir, 'doctrees'),
'-w', SPHINX_WARN_LOG,
'-t', target,
'-D', 'idf_target={}'.format(target),
'-D', 'docs_to_build={}'.format(','. join(input_docs)),
src_dir,
os.path.join(build_dir, buildername) # build directory
]
saved_cwd = os.getcwd()
os.chdir(build_dir) # also run sphinx in the build directory
print("Running '%s'" % (' '.join(args)))
ret = 1
try:
# Note: we can't call sphinx.cmd.build.main() here as multiprocessing doesn't est >1 layer deep
# and sphinx.cmd.build() also does a lot of work in the calling thread, especially for j ==1,
# so using a Pyhthon thread for this part is a poor option (GIL)
p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
for c in iter(lambda: p.stdout.readline(), b''):
sys.stdout.write(prefix)
sys.stdout.write(c.decode('utf-8'))
ret = p.wait()
assert (ret is not None)
sys.stdout.flush()
except KeyboardInterrupt: # this seems to be the only way to get Ctrl-C to kill everything?
p.kill()
os.chdir(saved_cwd)
return 130 # FIXME It doesn't return this errorcode, why? Just prints stacktrace
os.chdir(saved_cwd)
return ret
def action_build(args):
if not args.check_warnings_only:
ret = parallel_call(args, call_build_docs)
if ret != 0:
return ret
def check_doxygen_version():
# Different version of doxygen may produce different warnings
# This could cause a build to fail locally, but pass CI and vice versa
process = subprocess.run(['doxygen', '--version'], encoding='utf-8', stdout=subprocess.PIPE)
doxygen_ver = process.stdout.strip()
if version.parse(doxygen_ver) > DXG_CI_VERSION:
print('Local doxygen version {} is newer than CI doxygen version {}. Local build may contain '
'warnings that will not be raised when built by CI.'.format(doxygen_ver, DXG_CI_VERSION))
def call_build_docs(entry):
(language, target, build_dir, src_dir, sphinx_parallel_jobs, builders, input_docs) = entry
for buildername in builders:
ret = sphinx_call(language, target, build_dir, src_dir, sphinx_parallel_jobs, buildername, input_docs)
# Warnings are checked after each builder as logs are overwritten
# check Doxygen warnings:
ret += check_docs(language, target,
log_file=os.path.join(build_dir, DXG_WARN_LOG),
known_warnings_file=DXG_KNOWN_WARNINGS,
out_sanitized_log_file=os.path.join(build_dir, DXG_SANITIZED_LOG))
# check Sphinx warnings:
ret += check_docs(language, target,
log_file=os.path.join(build_dir, SPHINX_WARN_LOG),
known_warnings_file=SPHINX_KNOWN_WARNINGS,
out_sanitized_log_file=os.path.join(build_dir, SPHINX_SANITIZED_LOG))
if ret != 0:
check_doxygen_version()
return ret
# Build PDF from tex
if 'latex' in builders:
latex_dir = os.path.join(build_dir, 'latex')
ret = build_pdf(language, target, latex_dir)
return ret
def build_pdf(language, target, latex_dir):
# Note: because this runs in a multiprocessing Process, everything which happens here should be isolated to a single process
# wrap stdout & stderr in a way that lets us see which build_docs instance they come from
#
# this doesn't apply to subprocesses, they write to OS stdout & stderr so no prefix appears
prefix = '%s/%s: ' % (language, target)
print('Building PDF in latex_dir: %s' % (latex_dir))
saved_cwd = os.getcwd()
os.chdir(latex_dir)
# Based on read the docs PDFBuilder
rcfile = 'latexmkrc'
cmd = [
'latexmk',
'-r',
rcfile,
'-pdf',
# When ``-f`` is used, latexmk will continue building if it
# encounters errors. We still receive a failure exit code in this
# case, but the correct steps should run.
'-f',
'-dvi-', # dont generate dvi
'-ps-', # dont generate ps
'-interaction=nonstopmode',
'-quiet',
'-outdir=build',
]
try:
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
for c in iter(lambda: p.stdout.readline(), b''):
sys.stdout.write(prefix)
sys.stdout.write(c.decode('utf-8'))
ret = p.wait()
assert (ret is not None)
sys.stdout.flush()
except KeyboardInterrupt: # this seems to be the only way to get Ctrl-C to kill everything?
p.kill()
os.chdir(saved_cwd)
return 130 # FIXME It doesn't return this errorcode, why? Just prints stacktrace
os.chdir(saved_cwd)
return ret
SANITIZE_FILENAME_REGEX = re.compile('[^:]*/([^/:]*)(:.*)')
SANITIZE_LINENUM_REGEX = re.compile('([^:]*)(:[0-9]+:)(.*)')
def sanitize_line(line):
"""
Clear a log message from insignificant parts
filter:
- only filename, no path at the beginning
- no line numbers after the filename
"""
line = re.sub(SANITIZE_FILENAME_REGEX, r'\1\2', line)
line = re.sub(SANITIZE_LINENUM_REGEX, r'\1:line:\3', line)
return line
def check_docs(language, target, log_file, known_warnings_file, out_sanitized_log_file):
"""
Check for Documentation warnings in `log_file`: should only contain (fuzzy) matches to `known_warnings_file`
It prints all unknown messages with `target`/`language` prefix
It leaves `out_sanitized_log_file` file for observe and debug
"""
# Sanitize all messages
all_messages = list()
with open(log_file) as f, open(out_sanitized_log_file, 'w') as o:
for line in f:
sanitized_line = sanitize_line(line)
all_messages.append(LogMessage(line, sanitized_line))
o.write(sanitized_line)
known_messages = list()
with open(known_warnings_file) as k:
for known_line in k:
known_messages.append(known_line)
if 'doxygen' in known_warnings_file:
# Clean a known Doxygen limitation: it's expected to always document anonymous
# structs/unions but we don't do this in our docs, so filter these all out with a regex
# (this won't match any named field, only anonymous members -
# ie the last part of the field is is just <something>::@NUM not <something>::name)
RE_ANONYMOUS_FIELD = re.compile(r'.+:line: warning: parameters of member [^:\s]+(::[^:\s]+)*(::@\d+)+ are not \(all\) documented')
all_messages = [msg for msg in all_messages if not re.match(RE_ANONYMOUS_FIELD, msg.sanitized_text)]
# Collect all new messages that are not match with the known messages.
# The order is an important.
new_messages = list()
known_idx = 0
for msg in all_messages:
try:
known_idx = known_messages.index(msg.sanitized_text, known_idx)
except ValueError:
new_messages.append(msg)
if new_messages:
print('\n%s/%s: Build failed due to new/different warnings (%s):\n' % (language, target, log_file))
for msg in new_messages:
print('%s/%s: %s' % (language, target, msg.original_text), end='')
print('\n%s/%s: (Check files %s and %s for full details.)' % (language, target, known_warnings_file, log_file))
return 1
return 0
def action_linkcheck(args):
args.builders = 'linkcheck'
return parallel_call(args, call_linkcheck)
def call_linkcheck(entry):
return sphinx_call(*entry)
# https://github.com/espressif/esp-idf/tree/
# https://github.com/espressif/esp-idf/blob/
# https://github.com/espressif/esp-idf/raw/
GH_LINK_RE = r'https://github.com/espressif/esp-idf/(?:tree|blob|raw)/[^\s]+'
# we allow this one doc, because we always want users to see the latest support policy
GH_LINK_ALLOWED = ['https://github.com/espressif/esp-idf/blob/master/SUPPORT_POLICY.md',
'https://github.com/espressif/esp-idf/blob/master/SUPPORT_POLICY_CN.md']
def action_gh_linkcheck(args):
print('Checking for hardcoded GitHub links\n')
github_links = []
docs_dir = os.path.relpath(os.path.dirname(__file__))
for root, _, files in os.walk(docs_dir):
if '_build' in root:
continue
files = [os.path.join(root, f) for f in files if f.endswith('.rst')]
for path in files:
with open(path, 'r') as f:
for link in re.findall(GH_LINK_RE, f.read()):
if link not in GH_LINK_ALLOWED:
github_links.append((path, link))
if github_links:
for path, link in github_links:
print('%s: %s' % (path, link))
print('WARNING: Some .rst files contain hardcoded Github links.')
print('Please check above output and replace links with one of the following:')
print('- :idf:`dir` - points to directory inside ESP-IDF')
print('- :idf_file:`file` - points to file inside ESP-IDF')
print('- :idf_raw:`file` - points to raw view of the file inside ESP-IDF')
print('- :component:`dir` - points to directory inside ESP-IDF components dir')
print('- :component_file:`file` - points to file inside ESP-IDF components dir')
print('- :component_raw:`file` - points to raw view of the file inside ESP-IDF components dir')
print('- :example:`dir` - points to directory inside ESP-IDF examples dir')
print('- :example_file:`file` - points to file inside ESP-IDF examples dir')
print('- :example_raw:`file` - points to raw view of the file inside ESP-IDF examples dir')
print('These link types will point to the correct GitHub version automatically')
return 1
else:
print('No hardcoded links found')
return 0
if __name__ == '__main__':
main()