second commit

env/lib/python3.11/site-packages/markdown_it/rules_block/heading.py

@@ -0,0 +1,68 @@
+""" Atex heading (#, ##, ...) """
+from __future__ import annotations
+
+import logging
+
+from ..common.utils import isStrSpace
+from .state_block import StateBlock
+
+LOGGER = logging.getLogger(__name__)
+
+
+def heading(state: StateBlock, startLine: int, endLine: int, silent: bool) -> bool:
+    LOGGER.debug("entering heading: %s, %s, %s, %s", state, startLine, endLine, silent)
+
+    pos = state.bMarks[startLine] + state.tShift[startLine]
+    maximum = state.eMarks[startLine]
+
+    if state.is_code_block(startLine):
+        return False
+
+    ch: str | None = state.src[pos]
+
+    if ch != "#" or pos >= maximum:
+        return False
+
+    # count heading level
+    level = 1
+    pos += 1
+    try:
+        ch = state.src[pos]
+    except IndexError:
+        ch = None
+    while ch == "#" and pos < maximum and level <= 6:
+        level += 1
+        pos += 1
+        try:
+            ch = state.src[pos]
+        except IndexError:
+            ch = None
+
+    if level > 6 or (pos < maximum and not isStrSpace(ch)):
+        return False
+
+    if silent:
+        return True
+
+    # Let's cut tails like '    ###  ' from the end of string
+
+    maximum = state.skipSpacesBack(maximum, pos)
+    tmp = state.skipCharsStrBack(maximum, "#", pos)
+    if tmp > pos and isStrSpace(state.src[tmp - 1]):
+        maximum = tmp
+
+    state.line = startLine + 1
+
+    token = state.push("heading_open", "h" + str(level), 1)
+    token.markup = "########"[:level]
+    token.map = [startLine, state.line]
+
+    token = state.push("inline", "", 0)
+    token.content = state.src[pos:maximum].strip()
+    token.map = [startLine, state.line]
+    token.children = []
+
+    token = state.push("heading_close", "h" + str(level), -1)
+    token.markup = "########"[:level]
+
+    return True