1 files changed, 162 insertions, 0 deletions
diff --git a/core/fxcrt/fx_stream.h b/core/fxcrt/fx_stream.h
new file mode 100644
index 0000000000..5a5a650650
--- /dev/null
+++ b/core/fxcrt/fx_stream.h
@@ -0,0 +1,162 @@
+// 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 CORE_FXCRT_FX_STREAM_H_
+#define CORE_FXCRT_FX_STREAM_H_
+
+#include "core/fxcrt/fx_string.h"
+#include "core/fxcrt/fx_system.h"
+
+void* FX_OpenFolder(const FX_CHAR* path);
+void* FX_OpenFolder(const FX_WCHAR* path);
+FX_BOOL FX_GetNextFile(void* handle,
+                       CFX_ByteString& filename,
+                       FX_BOOL& bFolder);
+FX_BOOL FX_GetNextFile(void* handle,
+                       CFX_WideString& filename,
+                       FX_BOOL& bFolder);
+void FX_CloseFolder(void* handle);
+FX_WCHAR FX_GetFolderSeparator();
+
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+#define FX_FILESIZE int32_t
+#else
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif  // O_BINARY
+
+#ifndef O_LARGEFILE
+#define O_LARGEFILE 0
+#endif  // O_LARGEFILE
+
+#define FX_FILESIZE off_t
+#endif  // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+
+#define FX_GETBYTEOFFSET32(a) 0
+#define FX_GETBYTEOFFSET40(a) 0
+#define FX_GETBYTEOFFSET48(a) 0
+#define FX_GETBYTEOFFSET56(a) 0
+#define FX_GETBYTEOFFSET24(a) ((uint8_t)(a >> 24))
+#define FX_GETBYTEOFFSET16(a) ((uint8_t)(a >> 16))
+#define FX_GETBYTEOFFSET8(a) ((uint8_t)(a >> 8))
+#define FX_GETBYTEOFFSET0(a) ((uint8_t)(a))
+#define FX_FILEMODE_Write 0
+#define FX_FILEMODE_ReadOnly 1
+#define FX_FILEMODE_Truncate 2
+
+class IFX_StreamWrite {
+ public:
+  virtual ~IFX_StreamWrite() {}
+  virtual void Release() = 0;
+  virtual FX_BOOL WriteBlock(const void* pData, size_t size) = 0;
+};
+
+class IFX_FileWrite : public IFX_StreamWrite {
+ public:
+  // IFX_StreamWrite:
+  FX_BOOL WriteBlock(const void* pData, size_t size) override;
+  virtual FX_FILESIZE GetSize() = 0;
+  virtual FX_BOOL Flush() = 0;
+  virtual FX_BOOL WriteBlock(const void* pData,
+                             FX_FILESIZE offset,
+                             size_t size) = 0;
+};
+
+class IFX_StreamRead {
+ public:
+  virtual ~IFX_StreamRead() {}
+
+  virtual void Release() = 0;
+  virtual FX_BOOL IsEOF() = 0;
+  virtual FX_FILESIZE GetPosition() = 0;
+  virtual size_t ReadBlock(void* buffer, size_t size) = 0;
+};
+
+class IFX_FileRead : public IFX_StreamRead {
+ public:
+  // IFX_StreamRead:
+  void Release() override = 0;
+  FX_BOOL IsEOF() override;
+  FX_FILESIZE GetPosition() override;
+  size_t ReadBlock(void* buffer, size_t size) override;
+
+  virtual FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) = 0;
+  virtual FX_FILESIZE GetSize() = 0;
+};
+
+IFX_FileRead* FX_CreateFileRead(const FX_CHAR* filename);
+IFX_FileRead* FX_CreateFileRead(const FX_WCHAR* filename);
+
+class IFX_FileStream : public IFX_FileRead, public IFX_FileWrite {
+ public:
+  virtual IFX_FileStream* Retain() = 0;
+
+  // IFX_FileRead:
+  void Release() override = 0;
+  FX_BOOL IsEOF() override = 0;
+  FX_FILESIZE GetPosition() override = 0;
+  size_t ReadBlock(void* buffer, size_t size) override = 0;
+  FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override = 0;
+  FX_FILESIZE GetSize() override = 0;
+
+  // IFX_FileWrite:
+  FX_BOOL WriteBlock(const void* buffer,
+                     FX_FILESIZE offset,
+                     size_t size) override = 0;
+  FX_BOOL WriteBlock(const void* buffer, size_t size) override;
+  FX_BOOL Flush() override = 0;
+};
+
+IFX_FileStream* FX_CreateFileStream(const FX_CHAR* filename, uint32_t dwModes);
+IFX_FileStream* FX_CreateFileStream(const FX_WCHAR* filename, uint32_t dwModes);
+
+#ifdef PDF_ENABLE_XFA
+class IFX_FileAccess {
+ public:
+  virtual ~IFX_FileAccess() {}
+  virtual void Release() = 0;
+  virtual IFX_FileAccess* Retain() = 0;
+  virtual void GetPath(CFX_WideString& wsPath) = 0;
+  virtual IFX_FileStream* CreateFileStream(uint32_t dwModes) = 0;
+};
+IFX_FileAccess* FX_CreateDefaultFileAccess(const CFX_WideStringC& wsPath);
+#endif  // PDF_ENABLE_XFA
+
+class IFX_MemoryStream : public IFX_FileStream {
+ public:
+  virtual FX_BOOL IsConsecutive() const = 0;
+  virtual void EstimateSize(size_t nInitSize, size_t nGrowSize) = 0;
+  virtual uint8_t* GetBuffer() const = 0;
+  virtual void AttachBuffer(uint8_t* pBuffer,
+                            size_t nSize,
+                            FX_BOOL bTakeOver = FALSE) = 0;
+  virtual void DetachBuffer() = 0;
+};
+
+IFX_MemoryStream* FX_CreateMemoryStream(uint8_t* pBuffer,
+                                        size_t nSize,
+                                        FX_BOOL bTakeOver = FALSE);
+IFX_MemoryStream* FX_CreateMemoryStream(FX_BOOL bConsecutive = FALSE);
+
+class IFX_BufferRead : public IFX_StreamRead {
+ public:
+  // IFX_StreamRead:
+  void Release() override = 0;
+  FX_BOOL IsEOF() override = 0;
+  FX_FILESIZE GetPosition() override = 0;
+  size_t ReadBlock(void* buffer, size_t size) override = 0;
+
+  virtual FX_BOOL ReadNextBlock(FX_BOOL bRestart = FALSE) = 0;
+  virtual const uint8_t* GetBlockBuffer() = 0;
+  virtual size_t GetBlockSize() = 0;
+  virtual FX_FILESIZE GetBlockOffset() = 0;
+};
+
+#endif  // CORE_FXCRT_FX_STREAM_H_