Function getLastNVisualLines

cli/src/utils/text-layout.ts:60–111

(text: string, cols: number, n: number)

}

export function getLastNVisualLines(text: string, cols: number, n: number): { lines: string[]; hasMore: boolean } {
  if (n <= 0 || cols <= 0) return { lines: [], hasMore: false }
  const lines: string[] = []
  if (!text) return { lines, hasMore: false }

  const tokens = text.split(/(\s+)/)
  let current = ''
  let currentWidth = 0

  const pushLine = () => {
    lines.push(current)
    current = ''
    currentWidth = 0
  }

  const appendSegment = (segment: string) => {
    if (!segment) return
    const segWidth = stringWidth(segment)

    if (segWidth > cols) {
      for (const ch of Array.from(segment)) {
        const w = stringWidth(ch)
        if (currentWidth + w > cols) pushLine()
        current += ch
        currentWidth += w
      }
      return
    }

    if (currentWidth + segWidth > cols) pushLine()
    current += segment
    currentWidth += segWidth
  }

  for (const token of tokens) {
    if (!token) continue
    if (token.includes('\n')) {
      const parts = token.split('\n')
      for (let i = 0; i < parts.length; i++) {
        appendSegment(parts[i])
        if (i < parts.length - 1) pushLine()
      }
      continue
    }
    appendSegment(token)
  }

  if (current.length > 0 || lines.length === 0) pushLine()
  const hasMore = lines.length > n
  const lastLines = lines.slice(-n)
  return { lines: lastLines, hasMore }
}

export function computeInputLayoutMetrics({
  layoutContent,