xref: /aosp_15_r20/external/pdfium/core/fxcrt/cfx_read_only_vector_stream.cpp (revision 3ac0a46f773bac49fa9476ec2b1cf3f8da5ec3a4) 
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 #include "core/fxcrt/cfx_read_only_vector_stream.h"
6 
7 #include <utility>
8 
9 #include "core/fxcrt/cfx_read_only_span_stream.h"
10 #include "third_party/base/containers/span.h"
11 
CFX_ReadOnlyVectorStream(DataVector<uint8_t> data)12 CFX_ReadOnlyVectorStream::CFX_ReadOnlyVectorStream(DataVector<uint8_t> data)
13     : data_(std::move(data)),
14       stream_(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(data_)) {}
15 
CFX_ReadOnlyVectorStream(FixedUninitDataVector<uint8_t> data)16 CFX_ReadOnlyVectorStream::CFX_ReadOnlyVectorStream(
17     FixedUninitDataVector<uint8_t> data)
18     : fixed_data_(std::move(data)),
19       stream_(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(fixed_data_)) {}
20 
21 CFX_ReadOnlyVectorStream::~CFX_ReadOnlyVectorStream() = default;
22 
GetSize()23 FX_FILESIZE CFX_ReadOnlyVectorStream::GetSize() {
24   return stream_->GetSize();
25 }
26 
ReadBlockAtOffset(pdfium::span<uint8_t> buffer,FX_FILESIZE offset)27 bool CFX_ReadOnlyVectorStream::ReadBlockAtOffset(pdfium::span<uint8_t> buffer,
28                                                  FX_FILESIZE offset) {
29   return stream_->ReadBlockAtOffset(buffer, offset);
30 }
31