Markdown parser, done right. 100% CommonMark support, extensions, syntax plugins & high speed https://markdown-it.github.io/
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

52 lines
1.5 KiB

// heading (#, ##, ...)
import { isSpace } from '../common/utils.mjs'
export default function heading (state, startLine, endLine, silent) {
let pos = state.bMarks[startLine] + state.tShift[startLine]
let max = state.eMarks[startLine]
// if it's indented more than 3 spaces, it should be a code block
if (state.sCount[startLine] - state.blkIndent >= 4) { return false }
let ch = state.src.charCodeAt(pos)
if (ch !== 0x23/* # */ || pos >= max) { return false }
// count heading level
let level = 1
ch = state.src.charCodeAt(++pos)
while (ch === 0x23/* # */ && pos < max && level <= 6) {
level++
ch = state.src.charCodeAt(++pos)
}
if (level > 6 || (pos < max && !isSpace(ch))) { return false }
if (silent) { return true }
// Let's cut tails like ' ### ' from the end of string
max = state.skipSpacesBack(max, pos)
const tmp = state.skipCharsBack(max, 0x23, pos) // #
if (tmp > pos && isSpace(state.src.charCodeAt(tmp - 1))) {
max = tmp
}
state.line = startLine + 1
const token_o = state.push('heading_open', 'h' + String(level), 1)
token_o.markup = '########'.slice(0, level)
token_o.map = [startLine, state.line]
const token_i = state.push('inline', '', 0)
token_i.content = state.src.slice(pos, max).trim()
token_i.map = [startLine, state.line]
token_i.children = []
const token_c = state.push('heading_close', 'h' + String(level), -1)
token_c.markup = '########'.slice(0, level)
return true
}