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from collections.abc import Mapping, Sequence
from dataclasses import dataclass
from typing import Any, cast, Optional
from urllib.parse import quote
from .md import Renderer
from markdown_it.token import Token
_asciidoc_escapes = {
# escape all dots, just in case one is pasted at SOL
ord('.'): "{zwsp}.",
# may be replaced by typographic variants
ord("'"): "{apos}",
ord('"'): "{quot}",
# passthrough character
ord('+'): "{plus}",
# table marker
ord('|'): "{vbar}",
# xml entity reference
ord('&'): "{amp}",
# crossrefs. < needs extra escaping because links break in odd ways if they start with it
ord('<'): "{zwsp}+<+{zwsp}",
ord('>'): "{gt}",
# anchors, links, block attributes
ord('['): "{startsb}",
ord(']'): "{endsb}",
# superscript, subscript
ord('^'): "{caret}",
ord('~'): "{tilde}",
# bold
ord('*'): "{asterisk}",
# backslash
ord('\\'): "{backslash}",
# inline code
ord('`'): "{backtick}",
}
def asciidoc_escape(s: str) -> str:
s = s.translate(_asciidoc_escapes)
# :: is deflist item, ;; is has a replacement but no idea why
return s.replace("::", "{two-colons}").replace(";;", "{two-semicolons}")
@dataclass(kw_only=True)
class List:
head: str
@dataclass()
class Par:
sep: str
block_delim: str
continuing: bool = False
class AsciiDocRenderer(Renderer):
__output__ = "asciidoc"
_parstack: list[Par]
_list_stack: list[List]
_attrspans: list[str]
def __init__(self, manpage_urls: Mapping[str, str]):
super().__init__(manpage_urls)
self._parstack = [ Par("\n\n", "====") ]
self._list_stack = []
self._attrspans = []
def _enter_block(self, is_list: bool) -> None:
self._parstack.append(Par("\n+\n" if is_list else "\n\n", self._parstack[-1].block_delim + "="))
def _leave_block(self) -> None:
self._parstack.pop()
def _break(self, force: bool = False) -> str:
result = self._parstack[-1].sep if force or self._parstack[-1].continuing else ""
self._parstack[-1].continuing = True
return result
def _admonition_open(self, kind: str) -> str:
pbreak = self._break()
self._enter_block(False)
return f"{pbreak}[{kind}]\n{self._parstack[-2].block_delim}\n"
def _admonition_close(self) -> str:
self._leave_block()
return f"\n{self._parstack[-1].block_delim}\n"
def _list_open(self, token: Token, head: str) -> str:
attrs = []
if (idx := token.attrs.get('start')) is not None:
attrs.append(f"start={idx}")
if token.meta['compact']:
attrs.append('options="compact"')
if self._list_stack:
head *= len(self._list_stack[0].head) + 1
self._list_stack.append(List(head=head))
return f"{self._break()}[{','.join(attrs)}]"
def _list_close(self) -> str:
self._list_stack.pop()
return ""
def text(self, token: Token, tokens: Sequence[Token], i: int) -> str:
self._parstack[-1].continuing = True
return asciidoc_escape(token.content)
def paragraph_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._break()
def paragraph_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return ""
def hardbreak(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return " +\n"
def softbreak(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return f" "
def code_inline(self, token: Token, tokens: Sequence[Token], i: int) -> str:
self._parstack[-1].continuing = True
return f"``{asciidoc_escape(token.content)}``"
def code_block(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self.fence(token, tokens, i)
def link_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
self._parstack[-1].continuing = True
return f"link:{quote(cast(str, token.attrs['href']), safe='/:')}["
def link_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return "]"
def list_item_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
self._enter_block(True)
# allow the next token to be a block or an inline.
return f'\n{self._list_stack[-1].head} {{empty}}'
def list_item_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
self._leave_block()
return "\n"
def bullet_list_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._list_open(token, '*')
def bullet_list_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._list_close()
def em_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return "__"
def em_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return "__"
def strong_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return "**"
def strong_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return "**"
def fence(self, token: Token, tokens: Sequence[Token], i: int) -> str:
attrs = f"[source,{token.info}]\n" if token.info else ""
code = token.content
if code.endswith('\n'):
code = code[:-1]
return f"{self._break(True)}{attrs}----\n{code}\n----"
def blockquote_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
pbreak = self._break(True)
self._enter_block(False)
return f"{pbreak}[quote]\n{self._parstack[-2].block_delim}\n"
def blockquote_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
self._leave_block()
return f"\n{self._parstack[-1].block_delim}"
def note_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._admonition_open("NOTE")
def note_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._admonition_close()
def caution_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._admonition_open("CAUTION")
def caution_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._admonition_close()
def important_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._admonition_open("IMPORTANT")
def important_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._admonition_close()
def tip_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._admonition_open("TIP")
def tip_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._admonition_close()
def warning_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._admonition_open("WARNING")
def warning_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._admonition_close()
def dl_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return f"{self._break()}[]"
def dl_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return ""
def dt_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._break()
def dt_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
self._enter_block(True)
return ":: {empty}"
def dd_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return ""
def dd_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
self._leave_block()
return "\n"
def myst_role(self, token: Token, tokens: Sequence[Token], i: int) -> str:
self._parstack[-1].continuing = True
content = asciidoc_escape(token.content)
if token.meta['name'] == 'manpage' and (url := self._manpage_urls.get(token.content)):
return f"link:{quote(url, safe='/:')}[{content}]"
return f"[.{token.meta['name']}]``{asciidoc_escape(token.content)}``"
def inline_anchor(self, token: Token, tokens: Sequence[Token], i: int) -> str:
self._parstack[-1].continuing = True
return f"[[{token.attrs['id']}]]"
def attr_span_begin(self, token: Token, tokens: Sequence[Token], i: int) -> str:
self._parstack[-1].continuing = True
(id_part, class_part) = ("", "")
if id := token.attrs.get('id'):
id_part = f"[[{id}]]"
if s := token.attrs.get('class'):
if s == 'keycap':
class_part = "kbd:["
self._attrspans.append("]")
else:
return super().attr_span_begin(token, tokens, i)
else:
self._attrspans.append("")
return id_part + class_part
def attr_span_end(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._attrspans.pop()
def heading_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return token.markup.replace("#", "=") + " "
def heading_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return "\n"
def ordered_list_open(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._list_open(token, '.')
def ordered_list_close(self, token: Token, tokens: Sequence[Token], i: int) -> str:
return self._list_close()
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