HPDFVisitContentStreamOperators

遍历已解码的内容流，返回经过校验的变换后字节

声明

function HPDFVisitContentStreamOperators(const Bytes: TBytes;
  Sender: TObject; const Visitor: IHPDFContentOperatorVisitor;
  OnOperator: THPDFContentOperatorEvent;
  const Options: THPDFContentOperatorVisitOptions;
  CancellationToken: THPDFCancellationToken; out Output: TBytes;
  out Statistics: THPDFContentOperatorVisitStatistics): boolean;

参数

Bytes contains decoded PDF content-stream bytes
Sender 会被转发给 Delphi 事件回调
Visitor 和 OnOperator are optional synchronous handlers
Options supplies all parser and replacement budgets
CancellationToken enables cooperative cancellation
未请求任何编辑时，Output 收到的是与输入逐字节相同的数据
Statistics receives status, counts, state depths, byte totals, and diagnostics

返回值

遍历完成或按预期提前停止且输出有效时为 True，否则为 False

使用说明

The interface visitor runs before the event callback
当 ValidateOutput=True 时，替换后的输出会在返回成功之前重新解析
Rejection and failure clear Output so callers cannot publish partial edits

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