qemu/docs/sphinx/depfile.py

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# coding=utf-8
#
# QEMU depfile generation extension
#
# Copyright (c) 2020 Red Hat, Inc.
#
# This work is licensed under the terms of the GNU GPLv2 or later.
# See the COPYING file in the top-level directory.
"""depfile is a Sphinx extension that writes a dependency file for
an external build system"""
import os
import sphinx
__version__ = '1.0'
def get_infiles(env):
for x in env.found_docs:
yield env.doc2path(x)
yield from ((os.path.join(env.srcdir, dep)
for dep in env.dependencies[x]))
def write_depfile(app, env):
if not env.config.depfile:
return
# Using a directory as the output file does not work great because
# its timestamp does not necessarily change when the contents change.
# So create a timestamp file.
if env.config.depfile_stamp:
with open(env.config.depfile_stamp, 'w') as f:
pass
with open(env.config.depfile, 'w') as f:
print((env.config.depfile_stamp or app.outdir) + ": \\", file=f)
print(*get_infiles(env), file=f)
for x in get_infiles(env):
print(x + ":", file=f)
def setup(app):
app.add_config_value('depfile', None, 'env')
app.add_config_value('depfile_stamp', None, 'env')
app.connect('env-updated', write_depfile)
return dict(
version = __version__,
parallel_read_safe = True,
parallel_write_safe = True
)