chromium/third_party/pdfium/core/fxcrt/cfx_seekablestreamproxy.cpp

// Copyright 2017 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#include "core/fxcrt/cfx_seekablestreamproxy.h"

#include <stdint.h>

#include <algorithm>
#include <limits>
#include <utility>

#include "build/build_config.h"
#include "core/fxcrt/check.h"
#include "core/fxcrt/check_op.h"
#include "core/fxcrt/data_vector.h"
#include "core/fxcrt/fx_extension.h"
#include "core/fxcrt/fx_safe_types.h"
#include "core/fxcrt/span.h"
#include "core/fxcrt/span_util.h"

namespace {

// Returns {src bytes consumed, dst chars produced}.
// Invalid sequences are silently not output.
std::pair<size_t, size_t> UTF8Decode(pdfium::span<const uint8_t> pSrc,
                                     pdfium::span<wchar_t> pDst) { … }

void UTF16ToWChar(pdfium::span<wchar_t> buffer) { … }

void SwapByteOrder(pdfium::span<uint16_t> str) { … }

}  // namespace

#define BOM_UTF8_MASK …
#define BOM_UTF8 …
#define BOM_UTF16_MASK …
#define BOM_UTF16_BE …
#define BOM_UTF16_LE …

CFX_SeekableStreamProxy::CFX_SeekableStreamProxy(
    const RetainPtr<IFX_SeekableReadStream>& stream)
    : … { … }

CFX_SeekableStreamProxy::~CFX_SeekableStreamProxy() = default;

FX_FILESIZE CFX_SeekableStreamProxy::GetSize() const { … }

FX_FILESIZE CFX_SeekableStreamProxy::GetPosition() const { … }

bool CFX_SeekableStreamProxy::IsEOF() const { … }

void CFX_SeekableStreamProxy::Seek(From eSeek, FX_FILESIZE iOffset) { … }

void CFX_SeekableStreamProxy::SetCodePage(FX_CodePage wCodePage) { … }

size_t CFX_SeekableStreamProxy::ReadData(pdfium::span<uint8_t> buffer) { … }

size_t CFX_SeekableStreamProxy::ReadBlock(pdfium::span<wchar_t> buffer) { … }