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131 lines
4.9 KiB
Python
Executable File
131 lines
4.9 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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# gen-kconfig-doc.py — generate Sphinx .rst file from Kconfig files
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#
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# This script iterates over Kconfig and Kconfig.projbuild files in
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# ESP-IDF component directories, and outputs documentation for these options
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# as ReST markup.
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# For each option in Kconfig file (e.g. 'FOO'), CONFIG_FOO link target is
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# generated, allowing options to be referenced in other documents
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# (using :envvar:`CONFIG_FOO`)
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#
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# This script uses kconfiglib library to do all the work of parsing Kconfig
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# files: https://github.com/ulfalizer/Kconfiglib
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#
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# Copyright 2017 Espressif Systems (Shanghai) PTE LTD
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http:#www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import kconfiglib
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# Indentation to be used in the generated file
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INDENT = ' '
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# Characters used when underlining section heading
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HEADING_SYMBOLS = '#*=-^"+'
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# Keep the heading level in sync with api-reference/kconfig.rst
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INITIAL_HEADING_LEVEL = 2
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MAX_HEADING_LEVEL = 5
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OPTION_HEADING_LEVEL = 6
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def print_menu_contents(title, items, heading_level, breadcrumbs, genindex):
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if not genindex:
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if title:
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print_section_heading(title, heading_level)
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if heading_level == INITIAL_HEADING_LEVEL+1:
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print_menu_contents(title, items, heading_level, breadcrumbs, True)
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for entry in items:
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if entry.is_menu():
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if len(breadcrumbs) > 0:
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new_breadcrumbs = breadcrumbs + ' > ' + entry.get_title()
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else:
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new_breadcrumbs = entry.get_title()
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print_menu_contents(entry.get_title(), entry.get_items(),
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min(heading_level + 1, MAX_HEADING_LEVEL),
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new_breadcrumbs, genindex)
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elif genindex:
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print_item(entry, breadcrumbs)
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elif entry.is_choice():
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print_choice(entry, breadcrumbs)
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else:
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if len(entry.get_prompts()) == 0:
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# Skip entries which can never be visible
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continue
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# Currently this does not handle 'menuconfig' entires in any special way,
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# as Kconfglib offers no way of recognizing them automatically.
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print_option(entry, breadcrumbs)
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# Trailing newline after every option
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print
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def print_choice(choice, breadcrumbs):
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print_option(choice, breadcrumbs)
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print
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print '%sAvailable options' % INDENT
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for opt in choice.get_symbols():
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# Format available options as a list
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print '%s- %s' % (INDENT * 2, opt.name)
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def print_section_heading(title, heading_level):
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print title
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print HEADING_SYMBOLS[heading_level] * len(title)
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print
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def print_option(opt, breadcrumbs):
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# add link target so we can use :envvar:`CONFIG_FOO`
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print '.. envvar:: CONFIG_%s' % opt.name
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print
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if len(opt.prompts) > 0:
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print '%s%s' % (INDENT, opt.prompts[0][0])
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print
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if opt.get_help() is not None:
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# Help text normally contains newlines, but spaces at the beginning of
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# each line are stripped by kconfiglib. We need to re-indent the text
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# to produce valid ReST.
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print '%s%s' % (INDENT, opt.get_help().replace('\n', '\n%s' % INDENT))
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print '%sFound in\n%s' % (INDENT, INDENT * 2 + breadcrumbs)
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print
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def print_item(opt, breadcrumbs):
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print '- :envvar:`CONFIG_%s`' % opt.name
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print
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def process_kconfig_file(kconfig_file, heading_level, breadcrumbs):
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if os.path.exists(kconfig_file):
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cfg = kconfiglib.Config(kconfig_file, print_warnings=True)
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print_menu_contents(None, cfg.get_top_level_items(), heading_level, breadcrumbs, False)
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def print_all_components():
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heading_level = INITIAL_HEADING_LEVEL
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# Currently this works only for IDF components.
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# TODO: figure out if this can be re-used for documenting applications?
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components_path = os.path.join(os.path.curdir, '../..', 'components')
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for component_name in os.listdir(components_path):
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if component_name.startswith('.'):
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continue # skip system thumbnail folders
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kconfig_file_path = os.path.join(components_path, component_name, 'Kconfig')
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process_kconfig_file(kconfig_file_path, heading_level, 'Component config')
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process_kconfig_file(kconfig_file_path + '.projbuild', heading_level, '')
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kconfig_file_path = os.path.join(os.path.curdir, '../..', 'Kconfig.compiler')
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process_kconfig_file(kconfig_file_path, heading_level, '')
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if __name__ == '__main__':
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print_all_components()
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