1 // Copyright 2022 The PDFium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CORE_FXCRT_CFX_READ_ONLY_VECTOR_STREAM_H_ 6 #define CORE_FXCRT_CFX_READ_ONLY_VECTOR_STREAM_H_ 7 8 #include <stdint.h> 9 10 #include "core/fxcrt/data_vector.h" 11 #include "core/fxcrt/fixed_uninit_data_vector.h" 12 #include "core/fxcrt/fx_stream.h" 13 #include "core/fxcrt/retain_ptr.h" 14 15 class CFX_ReadOnlySpanStream; 16 17 class CFX_ReadOnlyVectorStream final : public IFX_SeekableReadStream { 18 public: 19 CONSTRUCT_VIA_MAKE_RETAIN; 20 21 // IFX_SeekableReadStream: 22 FX_FILESIZE GetSize() override; 23 bool ReadBlockAtOffset(pdfium::span<uint8_t> buffer, 24 FX_FILESIZE offset) override; 25 26 private: 27 explicit CFX_ReadOnlyVectorStream(DataVector<uint8_t> data); 28 explicit CFX_ReadOnlyVectorStream(FixedUninitDataVector<uint8_t> data); 29 ~CFX_ReadOnlyVectorStream() override; 30 31 const DataVector<uint8_t> data_; 32 const FixedUninitDataVector<uint8_t> fixed_data_; 33 // Spans over either `data_` or `fixed_data_`. 34 const RetainPtr<CFX_ReadOnlySpanStream> stream_; 35 }; 36 37 #endif // CORE_FXCRT_CFX_READ_ONLY_VECTOR_STREAM_H_ 38