import os import os.path import re from docutils import io, nodes, statemachine, utils from docutils.parsers.rst import directives from docutils.utils.error_reporting import ErrorString, SafeString from sphinx.directives.other import Include as BaseInclude from sphinx.util import logging def setup(app): sub = StringSubstituter() # Config values not available when setup is called app.connect('config-inited', lambda _, config: sub.init_sub_strings(config)) app.connect('source-read', sub.substitute_source_read_cb) # Override the default include directive to include formatting with idf_target # This is needed since there are no source-read events for includes app.add_directive('include', FormatedInclude, override=True) return {'parallel_read_safe': True, 'parallel_write_safe': True, 'version': '0.2'} def check_content(content, docname): # Log warnings for any {IDF_TARGET} expressions that haven't been replaced logger = logging.getLogger(__name__) errors = re.findall(r'{IDF_TARGET.*?}', content) for err in errors: logger.warning('Badly formated string substitution: {}'.format(err), location=docname) class StringSubstituter: """ Allows for string substitution of target related strings before any markup is parsed Supports the following replacements (examples shown is for target=esp32s2): {IDF_TARGET_NAME}, replaced with the current target name, e.g. ESP32-S2 Beta {IDF_TARGET_TOOLCHAIN_PREFIX}, replaced with the toolchain prefix, e.g. xtensa-esp32-elf {IDF_TARGET_PATH_NAME}, replaced with the path name, e.g. esp32s2 {IDF_TARGET_CFG_PREFIX}, replaced with the prefix used for config parameters, e.g. ESP32S2 {IDF_TARGET_TRM_EN_URL}, replaced with the url to the English technical reference manual {IDF_TARGET_TRM_CH_URL}, replaced with the url to the Chinese technical reference manual Also supports defines of local (single rst file) with the format: {IDF_TARGET_TX_PIN:default="IO3",esp32="IO4",esp32s2="IO5"} This will define a replacement of the tag {IDF_TARGET_TX_PIN} in the current rst-file, see e.g. uart.rst for example """ TARGET_NAMES = {'esp32': 'ESP32', 'esp32s2': 'ESP32-S2', 'esp32s3': 'ESP32-S3', 'esp32c3': 'ESP32-C3'} TOOLCHAIN_PREFIX = {'esp32': 'xtensa-esp32-elf', 'esp32s2': 'xtensa-esp32s2-elf', 'esp32s3': 'xtensa-esp32s3-elf', 'esp32c3': 'riscv32-esp-elf'} CONFIG_PREFIX = {'esp32': 'ESP32', 'esp32s2': 'ESP32S2', 'esp32s3': 'ESP32S3', 'esp32c3': 'ESP32C3'} TRM_EN_URL = {'esp32': 'https://www.espressif.com/sites/default/files/documentation/esp32_technical_reference_manual_en.pdf', 'esp32s2': 'https://www.espressif.com/sites/default/files/documentation/esp32-s2_technical_reference_manual_en.pdf', 'esp32s3': '#', 'esp32c3': 'https://www.espressif.com/sites/default/files/documentation/esp32-c3_technical_reference_manual_en.pdf'} TRM_CN_URL = {'esp32': 'https://www.espressif.com/sites/default/files/documentation/esp32_technical_reference_manual_cn.pdf', 'esp32s2': 'https://www.espressif.com/sites/default/files/documentation/esp32-s2_technical_reference_manual_cn.pdf', 'esp32s3': '#', 'esp32c3': 'https://www.espressif.com/sites/default/files/documentation/esp32-c3_technical_reference_manual_cn.pdf'} RE_PATTERN = re.compile(r'^\s*{IDF_TARGET_(\w+?):(.+?)}', re.MULTILINE) def __init__(self): self.substitute_strings = {} self.local_sub_strings = {} def add_pair(self, tag, replace_value): self.substitute_strings[tag] = replace_value def init_sub_strings(self, config): self.target_name = config.idf_target self.add_pair('{IDF_TARGET_NAME}', self.TARGET_NAMES[config.idf_target]) self.add_pair('{IDF_TARGET_PATH_NAME}', config.idf_target) self.add_pair('{IDF_TARGET_TOOLCHAIN_PREFIX}', self.TOOLCHAIN_PREFIX[config.idf_target]) self.add_pair('{IDF_TARGET_CFG_PREFIX}', self.CONFIG_PREFIX[config.idf_target]) self.add_pair('{IDF_TARGET_TRM_EN_URL}', self.TRM_EN_URL[config.idf_target]) self.add_pair('{IDF_TARGET_TRM_CN_URL}', self.TRM_CN_URL[config.idf_target]) def add_local_subs(self, matches): for sub_def in matches: if len(sub_def) != 2: raise ValueError('IDF_TARGET_X substitution define invalid, val={}'.format(sub_def)) tag = '{' + 'IDF_TARGET_{}'.format(sub_def[0]) + '}' match_default = re.match(r'^\s*default(\s*)=(\s*)\"(.*?)\"', sub_def[1]) if match_default is None: # There should always be a default value raise ValueError('No default value in IDF_TARGET_X substitution define, val={}'.format(sub_def)) match_target = re.match(r'^.*{}(\s*)=(\s*)\"(.*?)\"'.format(self.target_name), sub_def[1]) if match_target is None: sub_value = match_default.groups()[2] else: sub_value = match_target.groups()[2] self.local_sub_strings[tag] = sub_value def substitute(self, content): # Add any new local tags that matches the reg.ex. sub_defs = re.findall(self.RE_PATTERN, content) if len(sub_defs) != 0: self.add_local_subs(sub_defs) # Remove the tag defines content = re.sub(self.RE_PATTERN,'', content) for key in self.local_sub_strings: content = content.replace(key, self.local_sub_strings[key]) self.local_sub_strings = {} for key in self.substitute_strings: content = content.replace(key, self.substitute_strings[key]) return content def substitute_source_read_cb(self, app, docname, source): source[0] = self.substitute(source[0]) check_content(source[0], docname) class FormatedInclude(BaseInclude): """ Include and format content read from a separate source file. Code is based on the default include directive from docutils but extended to also format the content according to IDF target. """ def run(self): # For code or literal include blocks we run the normal include if 'literal' in self.options or 'code' in self.options: return super(FormatedInclude, self).run() """Include a file as part of the content of this reST file.""" if not self.state.document.settings.file_insertion_enabled: raise self.warning('"%s" directive disabled.' % self.name) source = self.state_machine.input_lines.source( self.lineno - self.state_machine.input_offset - 1) source_dir = os.path.dirname(os.path.abspath(source)) rel_filename, filename = self.env.relfn2path(self.arguments[0]) self.arguments[0] = filename self.env.note_included(filename) path = directives.path(self.arguments[0]) if path.startswith('<') and path.endswith('>'): path = os.path.join(self.standard_include_path, path[1:-1]) path = os.path.normpath(os.path.join(source_dir, path)) path = utils.relative_path(None, path) path = nodes.reprunicode(path) encoding = self.options.get( 'encoding', self.state.document.settings.input_encoding) e_handler = self.state.document.settings.input_encoding_error_handler tab_width = self.options.get( 'tab-width', self.state.document.settings.tab_width) try: self.state.document.settings.record_dependencies.add(path) include_file = io.FileInput(source_path=path, encoding=encoding, error_handler=e_handler) except UnicodeEncodeError: raise self.severe(u'Problems with "%s" directive path:\n' 'Cannot encode input file path "%s" ' '(wrong locale?).' % (self.name, SafeString(path))) except IOError as error: raise self.severe(u'Problems with "%s" directive path:\n%s.' % (self.name, ErrorString(error))) startline = self.options.get('start-line', None) endline = self.options.get('end-line', None) try: if startline or (endline is not None): lines = include_file.readlines() rawtext = ''.join(lines[startline:endline]) else: rawtext = include_file.read() except UnicodeError as error: raise self.severe(u'Problem with "%s" directive:\n%s' % (self.name, ErrorString(error))) # Format input sub = StringSubstituter() config = self.state.document.settings.env.config sub.init_sub_strings(config) rawtext = sub.substitute(rawtext) # start-after/end-before: no restrictions on newlines in match-text, # and no restrictions on matching inside lines vs. line boundaries after_text = self.options.get('start-after', None) if after_text: # skip content in rawtext before *and incl.* a matching text after_index = rawtext.find(after_text) if after_index < 0: raise self.severe('Problem with "start-after" option of "%s" ' 'directive:\nText not found.' % self.name) rawtext = rawtext[after_index + len(after_text):] before_text = self.options.get('end-before', None) if before_text: # skip content in rawtext after *and incl.* a matching text before_index = rawtext.find(before_text) if before_index < 0: raise self.severe('Problem with "end-before" option of "%s" ' 'directive:\nText not found.' % self.name) rawtext = rawtext[:before_index] include_lines = statemachine.string2lines(rawtext, tab_width, convert_whitespace=True) self.state_machine.insert_input(include_lines, path) return []