Function parseAnsi

web/components/tools/AnsiRenderer.tsx:81–183

(input: string)

}

function parseAnsi(input: string): Segment[] {
  const segments: Segment[] = [];
  let current: AnsiStyle = {};
  let pos = 0;
  let textStart = 0;

  const pushSegment = (end: number) => {
    const text = input.slice(textStart, end);
    if (text) {
      segments.push({ text, style: { ...current } });
    }
  };

  while (pos < input.length) {
    const esc = input.indexOf("\x1b[", pos);
    if (esc === -1) break;

    pushSegment(esc);

    // Find the end of the escape sequence (letter terminator)
    let seqEnd = esc + 2;
    while (seqEnd < input.length && !/[A-Za-z]/.test(input[seqEnd])) {
      seqEnd++;
    }
    const terminator = input[seqEnd];
    const params = input.slice(esc + 2, seqEnd).split(";").map(Number);

    if (terminator === "m") {
      // SGR sequence
      let i = 0;
      while (i < params.length) {
        const p = params[i];
        if (p === 0 || isNaN(p)) {
          current = {};
        } else if (p === 1) {
          current.bold = true;
        } else if (p === 2) {
          current.dim = true;
        } else if (p === 3) {
          current.italic = true;
        } else if (p === 4) {
          current.underline = true;
        } else if (p === 9) {
          current.strikethrough = true;
        } else if (p === 22) {
          current.bold = false;
          current.dim = false;
        } else if (p === 23) {
          current.italic = false;
        } else if (p === 24) {
          current.underline = false;
        } else if (p === 29) {
          current.strikethrough = false;
        } else if (p >= 30 && p <= 37) {
          current.color = FG_COLORS[p];
        } else if (p === 38) {
          if (params[i + 1] === 5 && params[i + 2] !== undefined) {
            current.color = get256Color(params[i + 2]);