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1# coding=utf-8
2#
3# Copyright © 2016 Intel Corporation
4#
5# Permission is hereby granted, free of charge, to any person obtaining a
6# copy of this software and associated documentation files (the "Software"),
7# to deal in the Software without restriction, including without limitation
8# the rights to use, copy, modify, merge, publish, distribute, sublicense,
9# and/or sell copies of the Software, and to permit persons to whom the
10# Software is furnished to do so, subject to the following conditions:
11#
12# The above copyright notice and this permission notice (including the next
13# paragraph) shall be included in all copies or substantial portions of the
14# Software.
15#
16# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22# IN THE SOFTWARE.
23#
24# Authors:
25# Jani Nikula <jani.nikula@intel.com>
26#
27# Please make sure this works on both python2 and python3.
28#
29
30import codecs
31import os
32import subprocess
33import sys
34import re
35import glob
36
37from docutils import nodes, statemachine
38from docutils.statemachine import ViewList
39from docutils.parsers.rst import directives, Directive
40import sphinx
41from sphinx.util.docutils import switch_source_input
42import kernellog
43
44__version__ = '1.0'
45
46class KernelDocDirective(Directive):
47 """Extract kernel-doc comments from the specified file"""
48 required_argument = 1
49 optional_arguments = 4
50 option_spec = {
51 'doc': directives.unchanged_required,
52 'export': directives.unchanged,
53 'internal': directives.unchanged,
54 'identifiers': directives.unchanged,
55 'no-identifiers': directives.unchanged,
56 'functions': directives.unchanged,
57 }
58 has_content = False
59
60 def run(self):
61 env = self.state.document.settings.env
62 cmd = [env.config.kerneldoc_bin, '-rst', '-enable-lineno']
63
64 # Pass the version string to kernel-doc, as it needs to use a different
65 # dialect, depending what the C domain supports for each specific
66 # Sphinx versions
67 cmd += ['-sphinx-version', sphinx.__version__]
68
69 filename = env.config.kerneldoc_srctree + '/' + self.arguments[0]
70 export_file_patterns = []
71
72 # Tell sphinx of the dependency
73 env.note_dependency(os.path.abspath(filename))
74
75 tab_width = self.options.get('tab-width', self.state.document.settings.tab_width)
76
77 # 'function' is an alias of 'identifiers'
78 if 'functions' in self.options:
79 self.options['identifiers'] = self.options.get('functions')
80
81 # FIXME: make this nicer and more robust against errors
82 if 'export' in self.options:
83 cmd += ['-export']
84 export_file_patterns = str(self.options.get('export')).split()
85 elif 'internal' in self.options:
86 cmd += ['-internal']
87 export_file_patterns = str(self.options.get('internal')).split()
88 elif 'doc' in self.options:
89 cmd += ['-function', str(self.options.get('doc'))]
90 elif 'identifiers' in self.options:
91 identifiers = self.options.get('identifiers').split()
92 if identifiers:
93 for i in identifiers:
94 cmd += ['-function', i]
95 else:
96 cmd += ['-no-doc-sections']
97
98 if 'no-identifiers' in self.options:
99 no_identifiers = self.options.get('no-identifiers').split()
100 if no_identifiers:
101 for i in no_identifiers:
102 cmd += ['-nosymbol', i]
103
104 for pattern in export_file_patterns:
105 for f in glob.glob(env.config.kerneldoc_srctree + '/' + pattern):
106 env.note_dependency(os.path.abspath(f))
107 cmd += ['-export-file', f]
108
109 cmd += [filename]
110
111 try:
112 kernellog.verbose(env.app,
113 'calling kernel-doc \'%s\'' % (" ".join(cmd)))
114
115 p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
116 out, err = p.communicate()
117
118 out, err = codecs.decode(out, 'utf-8'), codecs.decode(err, 'utf-8')
119
120 if p.returncode != 0:
121 sys.stderr.write(err)
122
123 kernellog.warn(env.app,
124 'kernel-doc \'%s\' failed with return code %d' % (" ".join(cmd), p.returncode))
125 return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
126 elif env.config.kerneldoc_verbosity > 0:
127 sys.stderr.write(err)
128
129 lines = statemachine.string2lines(out, tab_width, convert_whitespace=True)
130 result = ViewList()
131
132 lineoffset = 0;
133 line_regex = re.compile(r"^\.\. LINENO ([0-9]+)$")
134 for line in lines:
135 match = line_regex.search(line)
136 if match:
137 # sphinx counts lines from 0
138 lineoffset = int(match.group(1)) - 1
139 # we must eat our comments since the upset the markup
140 else:
141 doc = str(env.srcdir) + "/" + env.docname + ":" + str(self.lineno)
142 result.append(line, doc + ": " + filename, lineoffset)
143 lineoffset += 1
144
145 node = nodes.section()
146 self.do_parse(result, node)
147
148 return node.children
149
150 except Exception as e: # pylint: disable=W0703
151 kernellog.warn(env.app, 'kernel-doc \'%s\' processing failed with: %s' %
152 (" ".join(cmd), str(e)))
153 return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
154
155 def do_parse(self, result, node):
156 with switch_source_input(self.state, result):
157 self.state.nested_parse(result, 0, node, match_titles=1)
158
159def setup(app):
160 app.add_config_value('kerneldoc_bin', None, 'env')
161 app.add_config_value('kerneldoc_srctree', None, 'env')
162 app.add_config_value('kerneldoc_verbosity', 1, 'env')
163
164 app.add_directive('kernel-doc', KernelDocDirective)
165
166 return dict(
167 version = __version__,
168 parallel_read_safe = True,
169 parallel_write_safe = True
170 )