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// Copyright 2014 PDFium Authors. All rights reserved.
// 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
#ifndef _FX_STREAM
#define _FX_STREAM
class IFX_Stream;
IFX_FileRead* FX_CreateFileRead(IFX_Stream *pBaseStream, FX_BOOL bReleaseStream = FALSE);
#ifdef FX_FILESIZE
IFX_FileRead* FX_CreateFileRead(IFX_BufferRead *pBufferRead, FX_FILESIZE iFileSize = -1, FX_BOOL bReleaseStream = TRUE);
#else
IFX_FileRead* FX_CreateFileRead(IFX_BufferRead *pBufferRead, FX_INT32 iFileSize = -1, FX_BOOL bReleaseStream = TRUE);
#endif
IFX_FileWrite* FX_CreateFileWrite(IFX_Stream *pBaseStream, FX_BOOL bReleaseStream = FALSE);
enum FX_STREAMACCESS {
FX_STREAMACCESS_Binary = 0x00,
FX_STREAMACCESS_Text = 0x01,
FX_STREAMACCESS_Read = 0x02,
FX_STREAMACCESS_Write = 0x04,
FX_STREAMACCESS_Truncate = 0x10,
FX_STREAMACCESS_Append = 0x20,
FX_STREAMACCESS_Create = 0x80,
};
enum FX_STREAMSEEK {
FX_STREAMSEEK_Begin = 0 ,
FX_STREAMSEEK_Current ,
FX_STREAMSEEK_End ,
};
class IFX_Stream
{
public:
static IFX_Stream* CreateStream(IFX_FileRead *pFileRead, FX_DWORD dwAccess);
static IFX_Stream* CreateStream(IFX_FileWrite *pFileWrite, FX_DWORD dwAccess);
static IFX_Stream* CreateStream(FX_LPCWSTR pszFileName, FX_DWORD dwAccess);
static IFX_Stream* CreateStream(FX_LPBYTE pData, FX_INT32 length, FX_DWORD dwAccess);
static IFX_Stream* CreateStream(IFX_BufferRead *pBufferRead, FX_DWORD dwAccess, FX_INT32 iFileSize = -1, FX_BOOL bReleaseBufferRead = TRUE);
static IFX_Stream* CreateTextStream(IFX_Stream *pBaseStream, FX_BOOL bDeleteOnRelease);
virtual void Release() = 0;
virtual IFX_Stream* Retain() = 0;
virtual FX_DWORD GetAccessModes() const = 0;
virtual FX_INT32 GetLength() const = 0;
virtual FX_INT32 Seek(FX_STREAMSEEK eSeek, FX_INT32 iOffset) = 0;
virtual FX_INT32 GetPosition() = 0;
virtual FX_BOOL IsEOF() const = 0;
virtual FX_INT32 ReadData(FX_LPBYTE pBuffer, FX_INT32 iBufferSize) = 0;
virtual FX_INT32 ReadString(FX_LPWSTR pStr, FX_INT32 iMaxLength, FX_BOOL &bEOS, FX_INT32 const *pByteSize = NULL) = 0;
virtual FX_INT32 WriteData(FX_LPCBYTE pBuffer, FX_INT32 iBufferSize) = 0;
virtual FX_INT32 WriteString(FX_LPCWSTR pStr, FX_INT32 iLength) = 0;
virtual void Flush() = 0;
virtual FX_BOOL SetLength(FX_INT32 iLength) = 0;
virtual FX_INT32 GetBOM(FX_BYTE bom[4]) const = 0;
virtual FX_WORD GetCodePage() const = 0;
virtual FX_WORD SetCodePage(FX_WORD wCodePage) = 0;
virtual void Lock() = 0;
virtual void Unlock() = 0;
virtual IFX_Stream* CreateSharedStream(FX_DWORD dwAccess, FX_INT32 iOffset, FX_INT32 iLength) = 0;
};
#endif
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