# Extension to generate Doxygen XML include files, with IDF config & soc macros included
from __future__ import print_function
from __future__ import unicode_literals
from io import open
import os
import os.path
import re
import subprocess
from .util import copy_if_modified
ALL_KINDS = [
("function", "Functions"),
("union", "Unions"),
("struct", "Structures"),
("define", "Macros"),
("typedef", "Type Definitions"),
("enum", "Enumerations")
]
"""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 = os.path.join(app.config.docs_root, "Doxyfile")
print("Running doxygen with doxyfile {}".format(doxyfile))
# note: run Doxygen in the build directory, so the xml & xml_in files end up in there
subprocess.check_call(["doxygen", doxyfile], env=doxy_env, cwd=build_dir)
# 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
convert_api_xml_to_inc(app, doxyfile)
def convert_api_xml_to_inc(app, doxyfile):
""" 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)
header_paths = get_doxyfile_input_paths(app, doxyfile)
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