esp-idf/docs/idf_extensions/run_doxygen.py

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# Extension to generate Doxygen XML include files, with IDF config & soc macros included
from __future__ import print_function, unicode_literals
import os
import os.path
import re
import subprocess
from io import open
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from .util import copy_if_modified
ALL_KINDS = [
('function', 'Functions'),
('union', 'Unions'),
('struct', 'Structures'),
('define', 'Macros'),
('typedef', 'Type Definitions'),
('enum', 'Enumerations')
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]
"""list of items that will be generated for a single API file
"""
def setup(app):
# The idf_build_system extension will emit this event once it has generated documentation macro definitions
app.connect('idf-defines-generated', generate_doxygen)
return {'parallel_read_safe': True, 'parallel_write_safe': True, 'version': '0.2'}
def generate_doxygen(app, defines):
build_dir = os.path.dirname(app.doctreedir.rstrip(os.sep))
# Call Doxygen to get XML files from the header files
print('Calling Doxygen to generate latest XML files')
doxy_env = os.environ
doxy_env.update({
'ENV_DOXYGEN_DEFINES': ' '.join('{}={}'.format(key, value) for key, value in defines.items()),
'IDF_PATH': app.config.idf_path,
'IDF_TARGET': app.config.idf_target,
})
doxyfile_dir = os.path.join(app.config.docs_root, 'doxygen')
doxyfile_main = os.path.join(doxyfile_dir, 'Doxyfile_common')
doxyfile_target = os.path.join(doxyfile_dir, 'Doxyfile_' + app.config.idf_target)
print('Running doxygen with doxyfiles {} and {}'.format(doxyfile_main, doxyfile_target))
# It's possible to have doxygen log warnings to a file using WARN_LOGFILE directive,
# but in some cases it will still log an error to stderr and return success!
#
# So take all of stderr and redirect it to a logfile (will contain warnings and errors)
logfile = os.path.join(build_dir, 'doxygen-warning-log.txt')
with open(logfile, 'w') as f:
# note: run Doxygen in the build directory, so the xml & xml_in files end up in there
subprocess.check_call(['doxygen', doxyfile_main], env=doxy_env, cwd=build_dir, stderr=f)
# Doxygen has generated XML files in 'xml' directory.
# Copy them to 'xml_in', only touching the files which have changed.
copy_if_modified(os.path.join(build_dir, 'xml/'), os.path.join(build_dir, 'xml_in/'))
# Generate 'api_name.inc' files from the Doxygen XML files
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doxygen_paths = [doxyfile_main, doxyfile_target]
convert_api_xml_to_inc(app, doxygen_paths)
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def convert_api_xml_to_inc(app, doxyfiles):
""" Generate header_file.inc files
with API reference made of doxygen directives
for each header file
specified in the 'INPUT' statement of the Doxyfile.
"""
build_dir = app.config.build_dir
xml_directory_path = '{}/xml'.format(build_dir)
inc_directory_path = '{}/inc'.format(build_dir)
if not os.path.isdir(xml_directory_path):
raise RuntimeError('Directory {} does not exist!'.format(xml_directory_path))
if not os.path.exists(inc_directory_path):
os.makedirs(inc_directory_path)
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header_paths = [p for d in doxyfiles for p in get_doxyfile_input_paths(app, d)]
print("Generating 'api_name.inc' files with Doxygen directives")
for header_file_path in header_paths:
api_name = get_api_name(header_file_path)
inc_file_path = inc_directory_path + '/' + api_name + '.inc'
rst_output = generate_directives(header_file_path, xml_directory_path)
previous_rst_output = ''
if os.path.isfile(inc_file_path):
with open(inc_file_path, 'r', encoding='utf-8') as inc_file_old:
previous_rst_output = inc_file_old.read()
if previous_rst_output != rst_output:
with open(inc_file_path, 'w', encoding='utf-8') as inc_file:
inc_file.write(rst_output)
def get_doxyfile_input_paths(app, doxyfile_path):
"""Get contents of Doxyfile's INPUT statement.
Returns:
Contents of Doxyfile's INPUT.
"""
if not os.path.isfile(doxyfile_path):
raise RuntimeError("Doxyfile '{}' does not exist!".format(doxyfile_path))
print("Getting Doxyfile's INPUT")
with open(doxyfile_path, 'r', encoding='utf-8') as input_file:
line = input_file.readline()
# read contents of Doxyfile until 'INPUT' statement
while line:
if line.find('INPUT') == 0:
break
line = input_file.readline()
doxyfile_INPUT = []
line = input_file.readline()
# skip input_file contents until end of 'INPUT' statement
while line:
if line.isspace():
# we have reached the end of 'INPUT' statement
break
# process only lines that are not comments
if line.find('#') == -1:
# extract header file path inside components folder
m = re.search('components/(.*\.h)', line) # noqa: W605 - regular expression
header_file_path = m.group(1)
# Replace env variable used for multi target header
header_file_path = header_file_path.replace('$(IDF_TARGET)', app.config.idf_target)
doxyfile_INPUT.append(header_file_path)
# proceed reading next line
line = input_file.readline()
return doxyfile_INPUT
def get_api_name(header_file_path):
"""Get name of API from header file path.
Args:
header_file_path: path to the header file.
Returns:
The name of API.
"""
api_name = ''
regex = r'.*/(.*)\.h'
m = re.search(regex, header_file_path)
if m:
api_name = m.group(1)
return api_name
def generate_directives(header_file_path, xml_directory_path):
"""Generate API reference with Doxygen directives for a header file.
Args:
header_file_path: a path to the header file with API.
Returns:
Doxygen directives for the header file.
"""
api_name = get_api_name(header_file_path)
# in XLT file name each "_" in the api name is expanded by Doxygen to "__"
xlt_api_name = api_name.replace('_', '__')
xml_file_path = '%s/%s_8h.xml' % (xml_directory_path, xlt_api_name)
rst_output = ''
rst_output = ".. File automatically generated by 'gen-dxd.py'\n"
rst_output += '\n'
rst_output += get_rst_header('Header File')
rst_output += '* :component_file:`' + header_file_path + '`\n'
rst_output += '\n'
try:
import xml.etree.cElementTree as ET
except ImportError:
import xml.etree.ElementTree as ET
tree = ET.ElementTree(file=xml_file_path)
for kind, label in ALL_KINDS:
rst_output += get_directives(tree, kind)
return rst_output
def get_rst_header(header_name):
"""Get rst formatted code with a header.
Args:
header_name: name of header.
Returns:
Formatted rst code with the header.
"""
rst_output = ''
rst_output += header_name + '\n'
rst_output += '^' * len(header_name) + '\n'
rst_output += '\n'
return rst_output
def select_unions(innerclass_list):
"""Select unions from innerclass list.
Args:
innerclass_list: raw list with unions and structures
extracted from Dogygen's xml file.
Returns:
Doxygen directives with unions selected from the list.
"""
rst_output = ''
for line in innerclass_list.splitlines():
# union is denoted by "union" at the beginning of line
if line.find('union') == 0:
union_id, union_name = re.split(r'\t+', line)
rst_output += '.. doxygenunion:: '
rst_output += union_name
rst_output += '\n'
return rst_output
def select_structs(innerclass_list):
"""Select structures from innerclass list.
Args:
innerclass_list: raw list with unions and structures
extracted from Dogygen's xml file.
Returns:
Doxygen directives with structures selected from the list.
Note: some structures are excluded as described on code below.
"""
rst_output = ''
for line in innerclass_list.splitlines():
# structure is denoted by "struct" at the beginning of line
if line.find('struct') == 0:
# skip structures that are part of union
# they are documented by 'doxygenunion' directive
if line.find('::') > 0:
continue
struct_id, struct_name = re.split(r'\t+', line)
rst_output += '.. doxygenstruct:: '
rst_output += struct_name
rst_output += '\n'
rst_output += ' :members:\n'
rst_output += '\n'
return rst_output
def get_directives(tree, kind):
"""Get directives for specific 'kind'.
Args:
tree: the ElementTree 'tree' of XML by Doxygen
kind: name of API "kind" to be generated
Returns:
Doxygen directives for selected 'kind'.
Note: the header with "kind" name is included.
"""
rst_output = ''
if kind in ['union', 'struct']:
innerclass_list = ''
for elem in tree.iterfind('compounddef/innerclass'):
innerclass_list += elem.attrib['refid'] + '\t' + elem.text + '\n'
if kind == 'union':
rst_output += select_unions(innerclass_list)
else:
rst_output += select_structs(innerclass_list)
else:
for elem in tree.iterfind(
'compounddef/sectiondef/memberdef[@kind="%s"]' % kind):
name = elem.find('name')
rst_output += '.. doxygen%s:: ' % kind
rst_output += name.text + '\n'
if rst_output:
all_kinds_dict = dict(ALL_KINDS)
rst_output = get_rst_header(all_kinds_dict[kind]) + rst_output + '\n'
return rst_output