Method write

src/server/web/scrollback-buffer.ts:21–45

* Append PTY output to the buffer. * Uses 'binary' (latin1) encoding to preserve raw byte values from node-pty.

(data: string)

   * Uses 'binary' (latin1) encoding to preserve raw byte values from node-pty.
   */
  write(data: string): void {
    const src = Buffer.from(data, "binary");
    const len = src.length;
    if (len === 0) return;

    if (len >= this.capacity) {
      // Incoming chunk larger than the whole buffer — keep only the tail
      src.copy(this.buf, 0, len - this.capacity);
      this.writePos = 0;
      this.stored = this.capacity;
      return;
    }

    const end = this.writePos + len;
    if (end <= this.capacity) {
      src.copy(this.buf, this.writePos);
    } else {
      // Wrap around the ring boundary
      const tailLen = this.capacity - this.writePos;
      src.copy(this.buf, this.writePos, 0, tailLen);
      src.copy(this.buf, 0, tailLen);
    }
    this.writePos = end % this.capacity;
    this.stored = Math.min(this.stored + len, this.capacity);
  }

  /**
   * Returns all buffered bytes in chronological order (oldest first).