--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/planemo/lib/python3.7/site-packages/docutils/parsers/rst/directives/misc.py	Fri Jul 31 00:18:57 2020 -0400
@@ -0,0 +1,556 @@
+# $Id: misc.py 8370 2019-08-27 12:10:39Z milde $
+# Authors: David Goodger <goodger@python.org>; Dethe Elza
+# Copyright: This module has been placed in the public domain.
+
+"""Miscellaneous directives."""
+
+__docformat__ = 'reStructuredText'
+
+import sys
+import os.path
+import re
+import time
+from docutils import io, nodes, statemachine, utils
+from docutils.utils.error_reporting import SafeString, ErrorString
+from docutils.utils.error_reporting import locale_encoding
+from docutils.parsers.rst import Directive, convert_directive_function
+from docutils.parsers.rst import directives, roles, states
+from docutils.parsers.rst.directives.body import CodeBlock, NumberLines
+from docutils.parsers.rst.roles import set_classes
+from docutils.transforms import misc
+
+class Include(Directive):
+
+    """
+    Include content read from a separate source file.
+
+    Content may be parsed by the parser, or included as a literal
+    block.  The encoding of the included file can be specified.  Only
+    a part of the given file argument may be included by specifying
+    start and end line or text to match before and/or after the text
+    to be used.
+    """
+
+    required_arguments = 1
+    optional_arguments = 0
+    final_argument_whitespace = True
+    option_spec = {'literal': directives.flag,
+                   'code': directives.unchanged,
+                   'encoding': directives.encoding,
+                   'tab-width': int,
+                   'start-line': int,
+                   'end-line': int,
+                   'start-after': directives.unchanged_required,
+                   'end-before': directives.unchanged_required,
+                   # ignored except for 'literal' or 'code':
+                   'number-lines': directives.unchanged, # integer or None
+                   'class': directives.class_option,
+                   'name': directives.unchanged}
+
+    standard_include_path = os.path.join(os.path.dirname(states.__file__),
+                                         'include')
+
+    def run(self):
+        """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))
+        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 as error:
+            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)))
+        # 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)
+        if 'literal' in self.options:
+            # Don't convert tabs to spaces, if `tab_width` is positive.
+            if tab_width >= 0:
+                text = rawtext.expandtabs(tab_width)
+            else:
+                text = rawtext
+            literal_block = nodes.literal_block(rawtext, source=path,
+                                    classes=self.options.get('class', []))
+            literal_block.line = 1
+            self.add_name(literal_block)
+            if 'number-lines' in self.options:
+                try:
+                    startline = int(self.options['number-lines'] or 1)
+                except ValueError:
+                    raise self.error(':number-lines: with non-integer '
+                                     'start value')
+                endline = startline + len(include_lines)
+                if text.endswith('\n'):
+                    text = text[:-1]
+                tokens = NumberLines([([], text)], startline, endline)
+                for classes, value in tokens:
+                    if classes:
+                        literal_block += nodes.inline(value, value,
+                                                      classes=classes)
+                    else:
+                        literal_block += nodes.Text(value)
+            else:
+                literal_block += nodes.Text(text)
+            return [literal_block]
+        if 'code' in self.options:
+            self.options['source'] = path
+            # Don't convert tabs to spaces, if `tab_width` is negative:
+            if tab_width < 0:
+                include_lines = rawtext.splitlines()
+            codeblock = CodeBlock(self.name,
+                                  [self.options.pop('code')], # arguments
+                                  self.options,
+                                  include_lines, # content
+                                  self.lineno,
+                                  self.content_offset,
+                                  self.block_text,
+                                  self.state,
+                                  self.state_machine)
+            return codeblock.run()
+        self.state_machine.insert_input(include_lines, path)
+        return []
+
+
+class Raw(Directive):
+
+    """
+    Pass through content unchanged
+
+    Content is included in output based on type argument
+
+    Content may be included inline (content section of directive) or
+    imported from a file or url.
+    """
+
+    required_arguments = 1
+    optional_arguments = 0
+    final_argument_whitespace = True
+    option_spec = {'file': directives.path,
+                   'url': directives.uri,
+                   'encoding': directives.encoding}
+    has_content = True
+
+    def run(self):
+        if (not self.state.document.settings.raw_enabled
+            or (not self.state.document.settings.file_insertion_enabled
+                and ('file' in self.options
+                     or 'url' in self.options))):
+            raise self.warning('"%s" directive disabled.' % self.name)
+        attributes = {'format': ' '.join(self.arguments[0].lower().split())}
+        encoding = self.options.get(
+            'encoding', self.state.document.settings.input_encoding)
+        e_handler=self.state.document.settings.input_encoding_error_handler
+        if self.content:
+            if 'file' in self.options or 'url' in self.options:
+                raise self.error(
+                    '"%s" directive may not both specify an external file '
+                    'and have content.' % self.name)
+            text = '\n'.join(self.content)
+        elif 'file' in self.options:
+            if 'url' in self.options:
+                raise self.error(
+                    'The "file" and "url" options may not be simultaneously '
+                    'specified for the "%s" directive.' % self.name)
+            source_dir = os.path.dirname(
+                os.path.abspath(self.state.document.current_source))
+            path = os.path.normpath(os.path.join(source_dir,
+                                                 self.options['file']))
+            path = utils.relative_path(None, path)
+            try:
+                raw_file = io.FileInput(source_path=path,
+                                        encoding=encoding,
+                                        error_handler=e_handler)
+                # TODO: currently, raw input files are recorded as
+                # dependencies even if not used for the chosen output format.
+                self.state.document.settings.record_dependencies.add(path)
+            except IOError as error:
+                raise self.severe(u'Problems with "%s" directive path:\n%s.'
+                                  % (self.name, ErrorString(error)))
+            try:
+                text = raw_file.read()
+            except UnicodeError as error:
+                raise self.severe(u'Problem with "%s" directive:\n%s'
+                    % (self.name, ErrorString(error)))
+            attributes['source'] = path
+        elif 'url' in self.options:
+            source = self.options['url']
+            # Do not import urllib2 at the top of the module because
+            # it may fail due to broken SSL dependencies, and it takes
+            # about 0.15 seconds to load.
+            if sys.version_info >= (3, 0):
+                from urllib.request import urlopen
+                from urllib.error import URLError
+            else:
+                from urllib2 import urlopen, URLError
+            try:
+                raw_text = urlopen(source).read()
+            except (URLError, IOError, OSError) as error:
+                raise self.severe(u'Problems with "%s" directive URL "%s":\n%s.'
+                    % (self.name, self.options['url'], ErrorString(error)))
+            raw_file = io.StringInput(source=raw_text, source_path=source,
+                                      encoding=encoding,
+                                      error_handler=e_handler)
+            try:
+                text = raw_file.read()
+            except UnicodeError as error:
+                raise self.severe(u'Problem with "%s" directive:\n%s'
+                                  % (self.name, ErrorString(error)))
+            attributes['source'] = source
+        else:
+            # This will always fail because there is no content.
+            self.assert_has_content()
+        raw_node = nodes.raw('', text, **attributes)
+        (raw_node.source,
+        raw_node.line) = self.state_machine.get_source_and_line(self.lineno)
+        return [raw_node]
+
+
+class Replace(Directive):
+
+    has_content = True
+
+    def run(self):
+        if not isinstance(self.state, states.SubstitutionDef):
+            raise self.error(
+                'Invalid context: the "%s" directive can only be used within '
+                'a substitution definition.' % self.name)
+        self.assert_has_content()
+        text = '\n'.join(self.content)
+        element = nodes.Element(text)
+        self.state.nested_parse(self.content, self.content_offset,
+                                element)
+        # element might contain [paragraph] + system_message(s)
+        node = None
+        messages = []
+        for elem in element:
+            if not node and isinstance(elem, nodes.paragraph):
+                node = elem
+            elif isinstance(elem, nodes.system_message):
+                elem['backrefs'] = []
+                messages.append(elem)
+            else:
+                return [
+                    self.state_machine.reporter.error(
+                        'Error in "%s" directive: may contain a single paragraph '
+                        'only.' % (self.name), line=self.lineno) ]
+        if node:
+            return messages + node.children
+        return messages
+
+class Unicode(Directive):
+
+    r"""
+    Convert Unicode character codes (numbers) to characters.  Codes may be
+    decimal numbers, hexadecimal numbers (prefixed by ``0x``, ``x``, ``\x``,
+    ``U+``, ``u``, or ``\u``; e.g. ``U+262E``), or XML-style numeric character
+    entities (e.g. ``&#x262E;``).  Text following ".." is a comment and is
+    ignored.  Spaces are ignored, and any other text remains as-is.
+    """
+
+    required_arguments = 1
+    optional_arguments = 0
+    final_argument_whitespace = True
+    option_spec = {'trim': directives.flag,
+                   'ltrim': directives.flag,
+                   'rtrim': directives.flag}
+
+    comment_pattern = re.compile(r'( |\n|^)\.\. ')
+
+    def run(self):
+        if not isinstance(self.state, states.SubstitutionDef):
+            raise self.error(
+                'Invalid context: the "%s" directive can only be used within '
+                'a substitution definition.' % self.name)
+        substitution_definition = self.state_machine.node
+        if 'trim' in self.options:
+            substitution_definition.attributes['ltrim'] = 1
+            substitution_definition.attributes['rtrim'] = 1
+        if 'ltrim' in self.options:
+            substitution_definition.attributes['ltrim'] = 1
+        if 'rtrim' in self.options:
+            substitution_definition.attributes['rtrim'] = 1
+        codes = self.comment_pattern.split(self.arguments[0])[0].split()
+        element = nodes.Element()
+        for code in codes:
+            try:
+                decoded = directives.unicode_code(code)
+            except ValueError as error:
+                raise self.error(u'Invalid character code: %s\n%s'
+                    % (code, ErrorString(error)))
+            element += nodes.Text(decoded)
+        return element.children
+
+
+class Class(Directive):
+
+    """
+    Set a "class" attribute on the directive content or the next element.
+    When applied to the next element, a "pending" element is inserted, and a
+    transform does the work later.
+    """
+
+    required_arguments = 1
+    optional_arguments = 0
+    final_argument_whitespace = True
+    has_content = True
+
+    def run(self):
+        try:
+            class_value = directives.class_option(self.arguments[0])
+        except ValueError:
+            raise self.error(
+                'Invalid class attribute value for "%s" directive: "%s".'
+                % (self.name, self.arguments[0]))
+        node_list = []
+        if self.content:
+            container = nodes.Element()
+            self.state.nested_parse(self.content, self.content_offset,
+                                    container)
+            for node in container:
+                node['classes'].extend(class_value)
+            node_list.extend(container.children)
+        else:
+            pending = nodes.pending(
+                misc.ClassAttribute,
+                {'class': class_value, 'directive': self.name},
+                self.block_text)
+            self.state_machine.document.note_pending(pending)
+            node_list.append(pending)
+        return node_list
+
+
+class Role(Directive):
+
+    has_content = True
+
+    argument_pattern = re.compile(r'(%s)\s*(\(\s*(%s)\s*\)\s*)?$'
+                                  % ((states.Inliner.simplename,) * 2))
+
+    def run(self):
+        """Dynamically create and register a custom interpreted text role."""
+        if self.content_offset > self.lineno or not self.content:
+            raise self.error('"%s" directive requires arguments on the first '
+                             'line.' % self.name)
+        args = self.content[0]
+        match = self.argument_pattern.match(args)
+        if not match:
+            raise self.error('"%s" directive arguments not valid role names: '
+                             '"%s".' % (self.name, args))
+        new_role_name = match.group(1)
+        base_role_name = match.group(3)
+        messages = []
+        if base_role_name:
+            base_role, messages = roles.role(
+                base_role_name, self.state_machine.language, self.lineno,
+                self.state.reporter)
+            if base_role is None:
+                error = self.state.reporter.error(
+                    'Unknown interpreted text role "%s".' % base_role_name,
+                    nodes.literal_block(self.block_text, self.block_text),
+                    line=self.lineno)
+                return messages + [error]
+        else:
+            base_role = roles.generic_custom_role
+        assert not hasattr(base_role, 'arguments'), (
+            'Supplemental directive arguments for "%s" directive not '
+            'supported (specified by "%r" role).' % (self.name, base_role))
+        try:
+            converted_role = convert_directive_function(base_role)
+            (arguments, options, content, content_offset) = (
+                self.state.parse_directive_block(
+                self.content[1:], self.content_offset, converted_role,
+                option_presets={}))
+        except states.MarkupError as detail:
+            error = self.state_machine.reporter.error(
+                'Error in "%s" directive:\n%s.' % (self.name, detail),
+                nodes.literal_block(self.block_text, self.block_text),
+                line=self.lineno)
+            return messages + [error]
+        if 'class' not in options:
+            try:
+                options['class'] = directives.class_option(new_role_name)
+            except ValueError as detail:
+                error = self.state_machine.reporter.error(
+                    u'Invalid argument for "%s" directive:\n%s.'
+                    % (self.name, SafeString(detail)), nodes.literal_block(
+                    self.block_text, self.block_text), line=self.lineno)
+                return messages + [error]
+        role = roles.CustomRole(new_role_name, base_role, options, content)
+        roles.register_local_role(new_role_name, role)
+        return messages
+
+
+class DefaultRole(Directive):
+
+    """Set the default interpreted text role."""
+
+    optional_arguments = 1
+    final_argument_whitespace = False
+
+    def run(self):
+        if not self.arguments:
+            if '' in roles._roles:
+                # restore the "default" default role
+                del roles._roles['']
+            return []
+        role_name = self.arguments[0]
+        role, messages = roles.role(role_name, self.state_machine.language,
+                                    self.lineno, self.state.reporter)
+        if role is None:
+            error = self.state.reporter.error(
+                'Unknown interpreted text role "%s".' % role_name,
+                nodes.literal_block(self.block_text, self.block_text),
+                line=self.lineno)
+            return messages + [error]
+        roles._roles[''] = role
+        return messages
+
+
+class Title(Directive):
+
+    required_arguments = 1
+    optional_arguments = 0
+    final_argument_whitespace = True
+
+    def run(self):
+        self.state_machine.document['title'] = self.arguments[0]
+        return []
+
+
+class Date(Directive):
+
+    has_content = True
+
+    def run(self):
+        if not isinstance(self.state, states.SubstitutionDef):
+            raise self.error(
+                'Invalid context: the "%s" directive can only be used within '
+                'a substitution definition.' % self.name)
+        format_str = '\n'.join(self.content) or '%Y-%m-%d'
+        if sys.version_info< (3, 0):
+            try:
+                format_str = format_str.encode(locale_encoding or 'utf-8')
+            except UnicodeEncodeError:
+                raise self.warning(u'Cannot encode date format string '
+                    u'with locale encoding "%s".' % locale_encoding)
+        # @@@
+        # Use timestamp from the `SOURCE_DATE_EPOCH`_ environment variable?
+        # Pro: Docutils-generated documentation
+        #      can easily be part of `reproducible software builds`__
+        #
+        #      __ https://reproducible-builds.org/
+        #
+        # Con: Changes the specs, hard to predict behaviour,
+        #
+        # See also the discussion about \date \time \year in TeX
+        # http://tug.org/pipermail/tex-k/2016-May/002704.html
+        # source_date_epoch = os.environ.get('SOURCE_DATE_EPOCH')
+        # if (source_date_epoch):
+        #     text = time.strftime(format_str,
+        #                          time.gmtime(int(source_date_epoch)))
+        # else:
+        text = time.strftime(format_str)
+        if sys.version_info< (3, 0):
+            # `text` is a byte string that may contain non-ASCII characters:
+            try:
+                text = text.decode(locale_encoding or 'utf-8')
+            except UnicodeDecodeError:
+                text = text.decode(locale_encoding or 'utf-8', 'replace')
+                raise self.warning(u'Error decoding "%s"'
+                    u'with locale encoding "%s".' % (text, locale_encoding))
+        return [nodes.Text(text)]
+
+
+class TestDirective(Directive):
+
+    """This directive is useful only for testing purposes."""
+
+    optional_arguments = 1
+    final_argument_whitespace = True
+    option_spec = {'option': directives.unchanged_required}
+    has_content = True
+
+    def run(self):
+        if self.content:
+            text = '\n'.join(self.content)
+            info = self.state_machine.reporter.info(
+                'Directive processed. Type="%s", arguments=%r, options=%r, '
+                'content:' % (self.name, self.arguments, self.options),
+                nodes.literal_block(text, text), line=self.lineno)
+        else:
+            info = self.state_machine.reporter.info(
+                'Directive processed. Type="%s", arguments=%r, options=%r, '
+                'content: None' % (self.name, self.arguments, self.options),
+                line=self.lineno)
+        return [info]
+
+# Old-style, functional definition:
+#
+# def directive_test_function(name, arguments, options, content, lineno,
+#                             content_offset, block_text, state, state_machine):
+#     """This directive is useful only for testing purposes."""
+#     if content:
+#         text = '\n'.join(content)
+#         info = state_machine.reporter.info(
+#             'Directive processed. Type="%s", arguments=%r, options=%r, '
+#             'content:' % (name, arguments, options),
+#             nodes.literal_block(text, text), line=lineno)
+#     else:
+#         info = state_machine.reporter.info(
+#             'Directive processed. Type="%s", arguments=%r, options=%r, '
+#             'content: None' % (name, arguments, options), line=lineno)
+#     return [info]
+#
+# directive_test_function.arguments = (0, 1, 1)
+# directive_test_function.options = {'option': directives.unchanged_required}
+# directive_test_function.content = 1