Function detectPreformattedMarkdownSegments

src/utils/markdown.ts:289–382

(
  content: string,
)

}

export function detectPreformattedMarkdownSegments(
  content: string,
): MarkdownSegment[] {
  if (content.length === 0) {
    return []
  }

  const lines = content.split('\n')
  const lineOffsets = getLineStartOffsets(lines)
  const segments: MarkdownSegment[] = []
  let markdownCursor = 0
  let lineIndex = 0
  let activeFence: { marker: '`' | '~'; size: number } | null = null

  while (lineIndex < lines.length) {
    const line = lines[lineIndex] ?? ''
    if (activeFence) {
      if (isFenceClose(line, activeFence)) {
        activeFence = null
      }
      lineIndex += 1
      continue
    }

    const openingFence = detectFenceDelimiter(line)
    if (openingFence) {
      activeFence = openingFence
      lineIndex += 1
      continue
    }

    if (classifyPotentialDiagramLine(line) === 'other') {
      lineIndex += 1
      continue
    }

    const runStart = lineIndex
    while (
      lineIndex < lines.length &&
      !detectFenceDelimiter(lines[lineIndex] ?? '') &&
      classifyPotentialDiagramLine(lines[lineIndex] ?? '') !== 'other'
    ) {
      lineIndex += 1
    }
    const runEnd = lineIndex

    let candidateStart = runStart
    while (
      candidateStart < runEnd &&
      (lines[candidateStart] ?? '').trim().length === 0
    ) {
      candidateStart += 1
    }

    let candidateEnd = runEnd
    while (
      candidateEnd > candidateStart &&
      (lines[candidateEnd - 1] ?? '').trim().length === 0