// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FXCRT_INCLUDE_FX_STREAM_H_
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#define CORE_FXCRT_INCLUDE_FX_STREAM_H_
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#include "core/fxcrt/include/fx_string.h"
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#include "core/fxcrt/include/fx_system.h"
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void* FX_OpenFolder(const FX_CHAR* path);
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void* FX_OpenFolder(const FX_WCHAR* path);
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FX_BOOL FX_GetNextFile(void* handle,
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CFX_ByteString& filename,
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FX_BOOL& bFolder);
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FX_BOOL FX_GetNextFile(void* handle,
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CFX_WideString& filename,
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FX_BOOL& bFolder);
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void FX_CloseFolder(void* handle);
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FX_WCHAR FX_GetFolderSeparator();
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#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
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#define FX_FILESIZE int32_t
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#else
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#ifndef O_BINARY
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#define O_BINARY 0
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#endif // O_BINARY
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#ifndef O_LARGEFILE
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#define O_LARGEFILE 0
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#endif // O_LARGEFILE
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#define FX_FILESIZE off_t
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#endif // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
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#define FX_GETBYTEOFFSET32(a) 0
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#define FX_GETBYTEOFFSET40(a) 0
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#define FX_GETBYTEOFFSET48(a) 0
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#define FX_GETBYTEOFFSET56(a) 0
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#define FX_GETBYTEOFFSET24(a) ((uint8_t)(a >> 24))
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#define FX_GETBYTEOFFSET16(a) ((uint8_t)(a >> 16))
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#define FX_GETBYTEOFFSET8(a) ((uint8_t)(a >> 8))
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#define FX_GETBYTEOFFSET0(a) ((uint8_t)(a))
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#define FX_FILEMODE_Write 0
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#define FX_FILEMODE_ReadOnly 1
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#define FX_FILEMODE_Truncate 2
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class IFX_StreamWrite {
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public:
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virtual ~IFX_StreamWrite() {}
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virtual void Release() = 0;
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virtual FX_BOOL WriteBlock(const void* pData, size_t size) = 0;
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};
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class IFX_FileWrite : public IFX_StreamWrite {
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public:
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// IFX_StreamWrite:
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FX_BOOL WriteBlock(const void* pData, size_t size) override;
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virtual FX_FILESIZE GetSize() = 0;
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virtual FX_BOOL Flush() = 0;
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virtual FX_BOOL WriteBlock(const void* pData,
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FX_FILESIZE offset,
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size_t size) = 0;
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};
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class IFX_StreamRead {
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public:
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virtual ~IFX_StreamRead() {}
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virtual void Release() = 0;
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virtual FX_BOOL IsEOF() = 0;
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virtual FX_FILESIZE GetPosition() = 0;
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virtual size_t ReadBlock(void* buffer, size_t size) = 0;
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};
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class IFX_FileRead : public IFX_StreamRead {
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public:
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// IFX_StreamRead:
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void Release() override = 0;
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FX_BOOL IsEOF() override;
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FX_FILESIZE GetPosition() override;
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size_t ReadBlock(void* buffer, size_t size) override;
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virtual FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) = 0;
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virtual FX_FILESIZE GetSize() = 0;
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};
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IFX_FileRead* FX_CreateFileRead(const FX_CHAR* filename);
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IFX_FileRead* FX_CreateFileRead(const FX_WCHAR* filename);
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class IFX_FileStream : public IFX_FileRead, public IFX_FileWrite {
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public:
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virtual IFX_FileStream* Retain() = 0;
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// IFX_FileRead:
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void Release() override = 0;
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FX_BOOL IsEOF() override = 0;
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FX_FILESIZE GetPosition() override = 0;
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size_t ReadBlock(void* buffer, size_t size) override = 0;
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FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override = 0;
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FX_FILESIZE GetSize() override = 0;
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// IFX_FileWrite:
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FX_BOOL WriteBlock(const void* buffer,
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FX_FILESIZE offset,
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size_t size) override = 0;
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FX_BOOL WriteBlock(const void* buffer, size_t size) override;
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FX_BOOL Flush() override = 0;
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};
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IFX_FileStream* FX_CreateFileStream(const FX_CHAR* filename, uint32_t dwModes);
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IFX_FileStream* FX_CreateFileStream(const FX_WCHAR* filename, uint32_t dwModes);
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#ifdef PDF_ENABLE_XFA
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class IFX_FileAccess {
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public:
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virtual ~IFX_FileAccess() {}
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virtual void Release() = 0;
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virtual IFX_FileAccess* Retain() = 0;
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virtual void GetPath(CFX_WideString& wsPath) = 0;
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virtual IFX_FileStream* CreateFileStream(uint32_t dwModes) = 0;
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};
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IFX_FileAccess* FX_CreateDefaultFileAccess(const CFX_WideStringC& wsPath);
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#endif // PDF_ENABLE_XFA
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class IFX_MemoryStream : public IFX_FileStream {
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public:
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virtual FX_BOOL IsConsecutive() const = 0;
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virtual void EstimateSize(size_t nInitSize, size_t nGrowSize) = 0;
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virtual uint8_t* GetBuffer() const = 0;
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virtual void AttachBuffer(uint8_t* pBuffer,
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size_t nSize,
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FX_BOOL bTakeOver = FALSE) = 0;
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virtual void DetachBuffer() = 0;
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};
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IFX_MemoryStream* FX_CreateMemoryStream(uint8_t* pBuffer,
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size_t nSize,
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FX_BOOL bTakeOver = FALSE);
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IFX_MemoryStream* FX_CreateMemoryStream(FX_BOOL bConsecutive = FALSE);
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class IFX_BufferRead : public IFX_StreamRead {
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public:
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// IFX_StreamRead:
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void Release() override = 0;
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FX_BOOL IsEOF() override = 0;
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FX_FILESIZE GetPosition() override = 0;
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size_t ReadBlock(void* buffer, size_t size) override = 0;
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virtual FX_BOOL ReadNextBlock(FX_BOOL bRestart = FALSE) = 0;
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virtual const uint8_t* GetBlockBuffer() = 0;
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virtual size_t GetBlockSize() = 0;
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virtual FX_FILESIZE GetBlockOffset() = 0;
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};
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#endif // CORE_FXCRT_INCLUDE_FX_STREAM_H_
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