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# lheading (---, ==)
import logging
from ..ruler import Ruler
from .state_block import StateBlock
LOGGER = logging.getLogger(__name__)
def lheading(state: StateBlock, startLine: int, endLine: int, silent: bool):
LOGGER.debug("entering lheading: %s, %s, %s, %s", state, startLine, endLine, silent)
level = None
nextLine = startLine + 1
ruler: Ruler = state.md.block.ruler
terminatorRules = ruler.getRules("paragraph")
# if it's indented more than 3 spaces, it should be a code block
if state.sCount[startLine] - state.blkIndent >= 4:
return False
oldParentType = state.parentType
state.parentType = "paragraph" # use paragraph to match terminatorRules
# jump line-by-line until empty one or EOF
while nextLine < endLine and not state.isEmpty(nextLine):
# this would be a code block normally, but after paragraph
# it's considered a lazy continuation regardless of what's there
if state.sCount[nextLine] - state.blkIndent > 3:
nextLine += 1
continue
# Check for underline in setext header
if state.sCount[nextLine] >= state.blkIndent:
pos = state.bMarks[nextLine] + state.tShift[nextLine]
maximum = state.eMarks[nextLine]
if pos < maximum:
marker = state.srcCharCode[pos]
# /* - */ /* = */
if marker == 0x2D or marker == 0x3D:
pos = state.skipChars(pos, marker)
pos = state.skipSpaces(pos)
# /* = */
if pos >= maximum:
level = 1 if marker == 0x3D else 2
break
# quirk for blockquotes, this line should already be checked by that rule
if state.sCount[nextLine] < 0:
nextLine += 1
continue
# Some tags can terminate paragraph without empty line.
terminate = False
for terminatorRule in terminatorRules:
if terminatorRule(state, nextLine, endLine, True):
terminate = True
break
if terminate:
break
nextLine += 1
if not level:
# Didn't find valid underline
return False
content = state.getLines(startLine, nextLine, state.blkIndent, False).strip()
state.line = nextLine + 1
token = state.push("heading_open", "h" + str(level), 1)
token.markup = chr(marker)
token.map = [startLine, state.line]
token = state.push("inline", "", 0)
token.content = content
token.map = [startLine, state.line - 1]
token.children = []
token = state.push("heading_close", "h" + str(level), -1)
token.markup = chr(marker)
state.parentType = oldParentType
return True
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