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# coding=utf-8
# SPDX-License-Identifier: GPL-2.0
#
u"""
kernel-feat
~~~~~~~~~~~
Implementation of the ``kernel-feat`` reST-directive.
:copyright: Copyright (C) 2016 Markus Heiser
:copyright: Copyright (C) 2016-2019 Mauro Carvalho Chehab
:maintained-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
:license: GPL Version 2, June 1991 see Linux/COPYING for details.
The ``kernel-feat`` (:py:class:`KernelFeat`) directive calls the
scripts/get_feat.pl script to parse the Kernel ABI files.
Overview of directive's argument and options.
.. code-block:: rst
.. kernel-feat:: <ABI directory location>
:debug:
The argument ``<ABI directory location>`` is required. It contains the
location of the ABI files to be parsed.
``debug``
Inserts a code-block with the *raw* reST. Sometimes it is helpful to see
what reST is generated.
"""
import codecs
import os
import re
import subprocess
import sys
from os import path
from docutils import nodes, statemachine
from docutils.statemachine import ViewList
from docutils.parsers.rst import directives, Directive
from docutils.utils.error_reporting import ErrorString
from sphinx.util.docutils import switch_source_input
__version__ = '1.0'
def setup(app):
app.add_directive("kernel-feat", KernelFeat)
return dict(
version = __version__
, parallel_read_safe = True
, parallel_write_safe = True
)
class KernelFeat(Directive):
u"""KernelFeat (``kernel-feat``) directive"""
required_arguments = 1
optional_arguments = 2
has_content = False
final_argument_whitespace = True
option_spec = {
"debug" : directives.flag
}
def warn(self, message, **replace):
replace["fname"] = self.state.document.current_source
replace["line_no"] = replace.get("line_no", self.lineno)
message = ("%(fname)s:%(line_no)s: [kernel-feat WARN] : " + message) % replace
self.state.document.settings.env.app.warn(message, prefix="")
def run(self):
doc = self.state.document
if not doc.settings.file_insertion_enabled:
raise self.warning("docutils: file insertion disabled")
env = doc.settings.env
cwd = path.dirname(doc.current_source)
cmd = "get_feat.pl rest --enable-fname --dir "
cmd += self.arguments[0]
if len(self.arguments) > 1:
cmd += " --arch " + self.arguments[1]
srctree = path.abspath(os.environ["srctree"])
fname = cmd
# extend PATH with $(srctree)/scripts
path_env = os.pathsep.join([
srctree + os.sep + "scripts",
os.environ["PATH"]
])
shell_env = os.environ.copy()
shell_env["PATH"] = path_env
shell_env["srctree"] = srctree
lines = self.runCmd(cmd, shell=True, cwd=cwd, env=shell_env)
line_regex = re.compile(r"^\.\. FILE (\S+)$")
out_lines = ""
for line in lines.split("\n"):
match = line_regex.search(line)
if match:
fname = match.group(1)
# Add the file to Sphinx build dependencies
env.note_dependency(os.path.abspath(fname))
else:
out_lines += line + "\n"
nodeList = self.nestedParse(out_lines, fname)
return nodeList
def runCmd(self, cmd, **kwargs):
u"""Run command ``cmd`` and return its stdout as unicode."""
try:
proc = subprocess.Popen(
cmd
, stdout = subprocess.PIPE
, stderr = subprocess.PIPE
, **kwargs
)
out, err = proc.communicate()
out, err = codecs.decode(out, 'utf-8'), codecs.decode(err, 'utf-8')
if proc.returncode != 0:
raise self.severe(
u"command '%s' failed with return code %d"
% (cmd, proc.returncode)
)
except OSError as exc:
raise self.severe(u"problems with '%s' directive: %s."
% (self.name, ErrorString(exc)))
return out
def nestedParse(self, lines, fname):
content = ViewList()
node = nodes.section()
if "debug" in self.options:
code_block = "\n\n.. code-block:: rst\n :linenos:\n"
for l in lines.split("\n"):
code_block += "\n " + l
lines = code_block + "\n\n"
for c, l in enumerate(lines.split("\n")):
content.append(l, fname, c)
buf = self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter
with switch_source_input(self.state, content):
self.state.nested_parse(content, 0, node, match_titles=1)
return node.children
|
