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03d35d9ec4
Let the user specify file patterns where to look for the EXPORT_SYMBOLs in addition to the file with kernel-doc comments. This is directly based on the -export-file FILE option added to kernel-doc in "kernel-doc: add support for specifying extra files for EXPORT_SYMBOLs", but we extend that with globbing patterns in the Sphinx extension. The file patterns are added as options to the :export: and :internal: arguments of the kernel-doc directive. For example, to extract the documentation of exported functions from include/net/mac80211.h: .. kernel-doc:: include/net/mac80211.h :export: net/mac80211/*.c Without the file pattern, no exported functions would be found, as the EXPORT_SYMBOLs are placed in the various source files under net/mac80211. The matched files are also added as dependencies on the document in Sphinx, as they may affect the output. This is one of the reasons to do the globbing in the Sphinx extension instead of in scripts/kernel-doc. The file pattern remains optional, and is not needed if the kernel-doc comments and EXPORT_SYMBOLs are placed in the source file passed in as the main argument to the kernel-doc directive. This is the most common case across the kernel source tree. Signed-off-by: Jani Nikula <jani.nikula@intel.com>
136 lines
5.2 KiB
Python
136 lines
5.2 KiB
Python
# coding=utf-8
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#
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# Copyright © 2016 Intel Corporation
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice (including the next
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# paragraph) shall be included in all copies or substantial portions of the
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# Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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#
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# Authors:
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# Jani Nikula <jani.nikula@intel.com>
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#
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# Please make sure this works on both python2 and python3.
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#
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import os
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import subprocess
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import sys
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import re
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import glob
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from docutils import nodes, statemachine
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from docutils.statemachine import ViewList
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from docutils.parsers.rst import directives
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from sphinx.util.compat import Directive
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class KernelDocDirective(Directive):
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"""Extract kernel-doc comments from the specified file"""
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required_argument = 1
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optional_arguments = 4
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option_spec = {
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'doc': directives.unchanged_required,
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'functions': directives.unchanged_required,
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'export': directives.unchanged,
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'internal': directives.unchanged,
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}
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has_content = False
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def run(self):
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env = self.state.document.settings.env
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cmd = [env.config.kerneldoc_bin, '-rst', '-enable-lineno']
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filename = env.config.kerneldoc_srctree + '/' + self.arguments[0]
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export_file_patterns = []
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# Tell sphinx of the dependency
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env.note_dependency(os.path.abspath(filename))
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tab_width = self.options.get('tab-width', self.state.document.settings.tab_width)
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# FIXME: make this nicer and more robust against errors
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if 'export' in self.options:
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cmd += ['-export']
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export_file_patterns = str(self.options.get('export')).split()
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elif 'internal' in self.options:
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cmd += ['-internal']
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export_file_patterns = str(self.options.get('internal')).split()
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elif 'doc' in self.options:
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cmd += ['-function', str(self.options.get('doc'))]
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elif 'functions' in self.options:
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for f in str(self.options.get('functions')).split():
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cmd += ['-function', f]
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for pattern in export_file_patterns:
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for f in glob.glob(env.config.kerneldoc_srctree + '/' + pattern):
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env.note_dependency(os.path.abspath(f))
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cmd += ['-export-file', f]
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cmd += [filename]
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try:
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env.app.verbose('calling kernel-doc \'%s\'' % (" ".join(cmd)))
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)
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out, err = p.communicate()
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# python2 needs conversion to unicode.
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# python3 with universal_newlines=True returns strings.
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if sys.version_info.major < 3:
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out, err = unicode(out, 'utf-8'), unicode(err, 'utf-8')
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if p.returncode != 0:
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sys.stderr.write(err)
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env.app.warn('kernel-doc \'%s\' failed with return code %d' % (" ".join(cmd), p.returncode))
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return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
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elif env.config.kerneldoc_verbosity > 0:
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sys.stderr.write(err)
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lines = statemachine.string2lines(out, tab_width, convert_whitespace=True)
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result = ViewList()
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lineoffset = 0;
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line_regex = re.compile("^#define LINENO ([0-9]+)$")
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for line in lines:
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match = line_regex.search(line)
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if match:
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# sphinx counts lines from 0
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lineoffset = int(match.group(1)) - 1
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# we must eat our comments since the upset the markup
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else:
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result.append(line, filename, lineoffset)
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lineoffset += 1
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node = nodes.section()
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node.document = self.state.document
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self.state.nested_parse(result, self.content_offset, node)
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return node.children
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except Exception as e:
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env.app.warn('kernel-doc \'%s\' processing failed with: %s' %
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(" ".join(cmd), str(e)))
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return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
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def setup(app):
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app.add_config_value('kerneldoc_bin', None, 'env')
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app.add_config_value('kerneldoc_srctree', None, 'env')
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app.add_config_value('kerneldoc_verbosity', 1, 'env')
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app.add_directive('kernel-doc', KernelDocDirective)
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