istream.c File Reference

#include <stdarg.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "winnls.h"
#include "shlwapi.h"
#include "wine/debug.h"

Include dependency graph for istream.c:

Go to the source code of this file.

Macros
#define	COBJMACROS
#define	NO_SHLWAPI_REG
#define	NO_SHLWAPI_PATH

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (shell)
HRESULT WINAPI	SHIStream_Read (IStream *lpStream, LPVOID lpvDest, ULONG ulSize)
BOOL WINAPI	SHIsEmptyStream (IStream *lpStream)
HRESULT WINAPI	SHIStream_Write (IStream *lpStream, LPCVOID lpvSrc, ULONG ulSize)

Macro Definition Documentation

COBJMACROS

#define COBJMACROS

Definition at line 23 of file istream.c.

NO_SHLWAPI_PATH

#define NO_SHLWAPI_PATH

Definition at line 29 of file istream.c.

NO_SHLWAPI_REG

#define NO_SHLWAPI_REG

Definition at line 28 of file istream.c.

Function Documentation

SHIsEmptyStream()

BOOL WINAPI SHIsEmptyStream

(

IStream *

lpStream

)

Definition at line 78 of file istream.c.

{
  STATSTG statstg;
  BOOL bRet = TRUE;
 
  TRACE("(%p)\n", lpStream);
 
  memset(&statstg, 0, sizeof(statstg));
 
  if(SUCCEEDED(IStream_Stat(lpStream, &statstg, 1)))
  {
    if(statstg.cbSize.QuadPart)
      bRet = FALSE; /* Non-Zero */
  }
  else
  {
    DWORD dummy, read_len;
 
    /* Try to read from the stream */
    if (SUCCEEDED(IStream_Read(lpStream, &dummy, sizeof(dummy), &read_len)) && read_len == sizeof(dummy))
    {
      LARGE_INTEGER zero;
      zero.QuadPart = 0;
 
      IStream_Seek(lpStream, zero, 0, NULL);
      bRet = FALSE; /* Non-Zero */
    }
  }
  return bRet;
}

SHIStream_Read()

HRESULT WINAPI SHIStream_Read	(	IStream *	lpStream,
		LPVOID	lpvDest,
		ULONG	ulSize
	)

Definition at line 52 of file istream.c.

{
  ULONG ulRead;
  HRESULT hRet;
 
  TRACE("(%p,%p,%d)\n", lpStream, lpvDest, ulSize);
 
  hRet = IStream_Read(lpStream, lpvDest, ulSize, &ulRead);
 
  if (SUCCEEDED(hRet) && ulRead != ulSize)
    hRet = E_FAIL;
  return hRet;
}

SHIStream_Write()

HRESULT WINAPI SHIStream_Write	(	IStream *	lpStream,
		LPCVOID	lpvSrc,
		ULONG	ulSize
	)

Definition at line 123 of file istream.c.

{
  ULONG ulWritten;
  HRESULT hRet;
 
  TRACE("(%p,%p,%d)\n", lpStream, lpvSrc, ulSize);
 
  hRet = IStream_Write(lpStream, lpvSrc, ulSize, &ulWritten);
 
  if (SUCCEEDED(hRet) && ulWritten != ulSize)
    hRet = E_FAIL;
 
  return hRet;
}

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

shell

)