7zFile.h

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/* 7zFile.h -- File IO
2023-03-05 : Igor Pavlov : Public domain */
 
#ifndef ZIP7_INC_FILE_H
#define ZIP7_INC_FILE_H
 
#ifdef _WIN32
#define USE_WINDOWS_FILE
// #include <windows.h>
#endif
 
#ifdef USE_WINDOWS_FILE
#include "7zWindows.h"
 
#else
// note: USE_FOPEN mode is limited to 32-bit file size
// #define USE_FOPEN
// #include <stdio.h>
#endif
 
#include "7zTypes.h"
 
EXTERN_C_BEGIN
 
/* ---------- File ---------- */
 
typedef struct
{
  #ifdef USE_WINDOWS_FILE
  HANDLE handle;
  #elif defined(USE_FOPEN)
  FILE *file;
  #else
  int fd;
  #endif
} CSzFile;
 
void File_Construct(CSzFile *p);
#if !defined(UNDER_CE) || !defined(USE_WINDOWS_FILE)
WRes InFile_Open(CSzFile *p, const char *name);
WRes OutFile_Open(CSzFile *p, const char *name);
#endif
#ifdef USE_WINDOWS_FILE
WRes InFile_OpenW(CSzFile *p, const WCHAR *name);
WRes OutFile_OpenW(CSzFile *p, const WCHAR *name);
#endif
WRes File_Close(CSzFile *p);
 
/* reads max(*size, remain file's size) bytes */
WRes File_Read(CSzFile *p, void *data, size_t *size);
 
/* writes *size bytes */
WRes File_Write(CSzFile *p, const void *data, size_t *size);
 
WRes File_Seek(CSzFile *p, Int64 *pos, ESzSeek origin);
WRes File_GetLength(CSzFile *p, UInt64 *length);
 
 
/* ---------- FileInStream ---------- */
 
typedef struct
{
  ISeqInStream vt;
  CSzFile file;
  WRes wres;
} CFileSeqInStream;
 
void FileSeqInStream_CreateVTable(CFileSeqInStream *p);
 
 
typedef struct
{
  ISeekInStream vt;
  CSzFile file;
  WRes wres;
} CFileInStream;
 
void FileInStream_CreateVTable(CFileInStream *p);
 
 
typedef struct
{
  ISeqOutStream vt;
  CSzFile file;
  WRes wres;
} CFileOutStream;
 
void FileOutStream_CreateVTable(CFileOutStream *p);
 
EXTERN_C_END
 
#endif