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ole2disp.c

/*
 *    OLE2DISP library
 *
 *    Copyright 1995    Martin von Loewis
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "config.h"

#include <stdarg.h>
#include <string.h>

#include "wine/windef16.h"
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "ole2.h"
#include "oleauto.h"
#include "winerror.h"

#include "ole2disp.h"

#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(ole);

/* This implementation of the BSTR API is 16-bit only. It
   represents BSTR as a 16:16 far pointer, and the strings
   as ISO-8859 */

/******************************************************************************
 *          BSTR_AllocBytes   [Internal]
 */
static BSTR16 BSTR_AllocBytes(int n)
{
    void *ptr = HeapAlloc( GetProcessHeap(), 0, n );
    return (BSTR16)MapLS(ptr);
}

/******************************************************************************
 * BSTR_Free [INTERNAL]
 */
static void BSTR_Free(BSTR16 in)
{
    void *ptr = MapSL( (SEGPTR)in );
    UnMapLS( (SEGPTR)in );
    HeapFree( GetProcessHeap(), 0, ptr );
}

/******************************************************************************
 * BSTR_GetAddr [INTERNAL]
 */
static void* BSTR_GetAddr(BSTR16 in)
{
    return in ? MapSL((SEGPTR)in) : 0;
}

/******************************************************************************
 *          SysAllocString    [OLE2DISP.2]
 *
 * Create a BSTR16 from an OLESTR16 (16 Bit).
 *
 * PARAMS
 *  oleStr [I] Source to create BSTR16 from
 *
 * RETURNS
 *  Success: A BSTR16 allocated with SysAllocStringLen16().
 *  Failure: NULL, if oleStr is NULL.
 */
BSTR16 WINAPI SysAllocString16(LPCOLESTR16 oleStr)
{
      BSTR16 out;

      if (!oleStr) return 0;

      out = BSTR_AllocBytes(strlen(oleStr)+1);
      if (!out) return 0;
      strcpy(BSTR_GetAddr(out),oleStr);
      return out;
}

/******************************************************************************
 *          SysReallocString  [OLE2DISP.3]
 *
 * Change the length of a previously created BSTR16 (16 Bit).
 *
 * PARAMS
 *  pbstr  [I] BSTR16 to change the length of
 *  oleStr [I] New source for pbstr
 *
 * RETURNS
 *  Success: 1
 *  Failure: 0.
 *
 * NOTES
 *  SysAllocStringStringLen16().
 */
INT16 WINAPI SysReAllocString16(LPBSTR16 pbstr,LPCOLESTR16 oleStr)
{
      BSTR16 new=SysAllocString16(oleStr);
      BSTR_Free(*pbstr);
      *pbstr=new;
      return 1;
}

/******************************************************************************
 *          SysAllocStringLen [OLE2DISP.4]
 *
 * Create a BSTR16 from an OLESTR16 of a given character length (16 Bit).
 *
 * PARAMS
 *  oleStr [I] Source to create BSTR16 from
 *  len    [I] Length of oleStr in wide characters
 *
 * RETURNS
 *  Success: A newly allocated BSTR16 from SysAllocStringByteLen16()
 *  Failure: NULL, if len is >= 0x80000000, or memory allocation fails.
 *
 * NOTES
 *  See SysAllocStringByteLen16().
 */
BSTR16 WINAPI SysAllocStringLen16(const char *oleStr, int len)
{
      BSTR16 out=BSTR_AllocBytes(len+1);

      if (!out)
            return 0;

    /*
     * Copy the information in the buffer.
     * Since it is valid to pass a NULL pointer here, we'll initialize the
     * buffer to nul if it is the case.
     */
    if (oleStr != 0)
      strcpy(BSTR_GetAddr(out),oleStr);
    else
      memset(BSTR_GetAddr(out), 0, len+1);

      return out;
}

/******************************************************************************
 *          SysReAllocStringLen     [OLE2DISP.5]
 *
 * Change the length of a previously created BSTR16 (16 Bit).
 *
 * PARAMS
 *  pbstr  [I] BSTR16 to change the length of
 *  oleStr [I] New source for pbstr
 *  len    [I] Length of oleStr in characters
 *
 * RETURNS
 *  Success: 1. The size of pbstr is updated.
 *  Failure: 0, if len >= 0x8000 or memory allocation fails.
 *
 * NOTES
 *  See SysAllocStringByteLen16().
 *  *pbstr may be changed by this function.
 */
int WINAPI SysReAllocStringLen16(BSTR16 *old,const char *in,int len)
{
      /* FIXME: Check input length */
      BSTR16 new=SysAllocStringLen16(in,len);
      BSTR_Free(*old);
      *old=new;
      return 1;
}

/******************************************************************************
 *          SysFreeString     [OLE2DISP.6]
 *
 * Free a BSTR16 (16 Bit).
 *
 * PARAMS
 *  str [I] String to free.
 *
 * RETURNS
 *  Nothing.
 */
void WINAPI SysFreeString16(BSTR16 str)
{
      BSTR_Free(str);
}

/******************************************************************************
 *          SysStringLen      [OLE2DISP.7]
 *
 * Get the allocated length of a BSTR16 in characters (16 Bit).
 *
 * PARAMS
 *  str [I] BSTR16 to find the length of
 *
 * RETURNS
 *  The allocated length of str, or 0 if str is NULL.
 */
int WINAPI SysStringLen16(BSTR16 str)
{
      return strlen(BSTR_GetAddr(str));
}

/******************************************************************************
 * CreateDispTypeInfo [OLE2DISP.31]
 */
HRESULT WINAPI CreateDispTypeInfo16(
      INTERFACEDATA *pidata,
      LCID lcid,
      ITypeInfo **pptinfo)
{
      FIXME("(%p,%d,%p),stub\n",pidata,lcid,pptinfo);
      return E_NOTIMPL;
}

/******************************************************************************
 * CreateStdDispatch [OLE2DISP.32]
 */
HRESULT WINAPI CreateStdDispatch16(
        IUnknown* punkOuter,
        void* pvThis,
      ITypeInfo* ptinfo,
      IUnknown** ppunkStdDisp)
{
      FIXME("(%p,%p,%p,%p),stub\n",punkOuter, pvThis, ptinfo,
               ppunkStdDisp);
      return 0;
}

/******************************************************************************
 * RegisterActiveObject [OLE2DISP.35]
 */
HRESULT WINAPI RegisterActiveObject16(
      IUnknown *punk, REFCLSID rclsid, DWORD dwFlags, unsigned long *pdwRegister
) {
      FIXME("(%p,%s,0x%08x,%p):stub\n",punk,debugstr_guid(rclsid),dwFlags,pdwRegister);
      return E_NOTIMPL;
}

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