[ADD] поддержка LaTeX-математики: dollarmath plugin, math_inline, math_block

md2gost/handlers/__init__.py

@@ -3,6 +3,7 @@ from md2gost.handlers.heading import heading
 from md2gost.handlers.hr import hr
 from md2gost.handlers.image import image
 from md2gost.handlers.lists import bullet_list, ordered_list
+from md2gost.handlers.math import math_block
 from md2gost.handlers.table import table
 from md2gost.handlers.text import paragraph
 
@@ -12,6 +13,7 @@ __all__ = [
     "heading",
     "image",
     "bullet_list",
+    "math_block",
     "ordered_list",
     "table",
     "paragraph",

md2gost/handlers/inline.py

@@ -50,6 +50,8 @@ def render_inline_tokens(tokens: list[Token]) -> str:
             parts.append("}")
         elif tok.type in ("softbreak", "hardbreak"):
             parts.append("~\\\\")
+        elif tok.type == "math_inline":
+            parts.append(f"${tok.content}$")
         else:
             parts.append(escape_latex(tok.content) if tok.content else "")
     return "".join(parts)

md2gost/handlers/math.py

@@ -0,0 +1,15 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from markdown_it.token import Token
+
+if TYPE_CHECKING:
+    from md2gost.render import Renderer
+
+
+def math_block(r: Renderer, tok: Token | None = None) -> str:
+    tok = r.tokens[r.pos]
+    content = tok.content.strip()
+    r.pos += 1
+    return f"\\[\n{content}\n\\]"

md2gost/parser.py

@@ -1,4 +1,5 @@
 from markdown_it import MarkdownIt
+from mdit_py_plugins.dollarmath import dollarmath_plugin
 from mdit_py_plugins.front_matter import front_matter_plugin
 
 
@@ -9,6 +10,7 @@ class Parser:
             MarkdownIt("commonmark", {"breaks": True, "html": True})
             .enable("table")
             .use(front_matter_plugin)
+            .use(dollarmath_plugin)
         )
         self.tokens = self.md.parse(md_text)
         self.front_matter = self._extract_front_matter()

md2gost/render.py

@@ -8,6 +8,7 @@ from md2gost.handlers import (
     heading,
     hr,
     image,
+    math_block,
     ordered_list,
     paragraph,
     table,
@@ -24,6 +25,7 @@ _BLOCK: dict[str, Callable[..., str]] = {
     "ordered_list_open": ordered_list,
     "table_open": table,
     "hr": hr,
+    "math_block": math_block,
 }
 
 _INLINE: dict[str, Callable[..., str]] = {