Sweden-Number/dlls/devenum/parsedisplayname.c

180 lines
5.3 KiB
C

/*
* IParseDisplayName implementation for DEVENUM.dll
*
* Copyright (C) 2002 Robert Shearman
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* NOTES ON THIS FILE:
* - Implements IParseDisplayName interface which creates a moniker
* from a string in a special format
*/
#include "devenum_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(devenum);
static HRESULT WINAPI DEVENUM_IParseDisplayName_QueryInterface(
LPPARSEDISPLAYNAME iface,
REFIID riid,
LPVOID *ppvObj)
{
ParseDisplayNameImpl *This = (ParseDisplayNameImpl *)iface;
TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
if (This == NULL || ppvObj == NULL) return E_POINTER;
if (IsEqualGUID(riid, &IID_IUnknown) ||
IsEqualGUID(riid, &IID_IParseDisplayName))
{
*ppvObj = (LPVOID)iface;
IParseDisplayName_AddRef(iface);
return S_OK;
}
FIXME("- no interface\n\tIID:\t%s\n", debugstr_guid(riid));
return E_NOINTERFACE;
}
/**********************************************************************
* DEVENUM_IParseDisplayName_AddRef (also IUnknown)
*/
static ULONG WINAPI DEVENUM_IParseDisplayName_AddRef(LPPARSEDISPLAYNAME iface)
{
ParseDisplayNameImpl *This = (ParseDisplayNameImpl *)iface;
TRACE("\n");
if (This == NULL) return E_POINTER;
if (InterlockedIncrement(&This->ref) == 1) {
InterlockedIncrement(&dll_ref);
}
return ++This->ref;
}
/**********************************************************************
* DEVENUM_IParseDisplayName_Release (also IUnknown)
*/
static ULONG WINAPI DEVENUM_IParseDisplayName_Release(LPPARSEDISPLAYNAME iface)
{
ParseDisplayNameImpl *This = (ParseDisplayNameImpl *)iface;
ULONG ref;
TRACE("\n");
if (This == NULL) return E_POINTER;
ref = --This->ref;
if (InterlockedDecrement(&This->ref) == 0) {
InterlockedDecrement(&dll_ref);
}
return ref;
}
/**********************************************************************
* DEVENUM_IParseDisplayName_ParseDisplayName
*
* Creates a moniker referenced to by the display string argument
*
* POSSIBLE BUGS:
* Might not handle more complicated strings properly (ie anything
* not in "@device:sw:{CLSID1}\<filter name or CLSID>" format
*/
static HRESULT WINAPI DEVENUM_IParseDisplayName_ParseDisplayName(
LPPARSEDISPLAYNAME iface,
IBindCtx *pbc,
LPOLESTR pszDisplayName,
ULONG *pchEaten,
IMoniker **ppmkOut)
{
LPOLESTR pszBetween = NULL;
LPOLESTR pszClass = NULL;
IEnumMoniker * pEm = NULL;
MediaCatMoniker * pMoniker = NULL;
CLSID clsidDevice;
HRESULT res = S_OK;
TRACE("(%p, %s, %p, %p)\n", pbc, debugstr_w(pszDisplayName), pchEaten, ppmkOut);
*ppmkOut = NULL;
if (pchEaten)
*pchEaten = strlenW(pszDisplayName);
pszDisplayName = strchrW(pszDisplayName, '{');
pszBetween = strchrW(pszDisplayName, '}') + 2;
/* size = pszBetween - pszDisplayName - 1 (for '\\' after CLSID)
* + 1 (for NULL character)
*/
pszClass = CoTaskMemAlloc((int)(pszBetween - pszDisplayName) * sizeof(WCHAR));
if (!pszClass)
return E_OUTOFMEMORY;
strncpyW(pszClass, pszDisplayName, (int)(pszBetween - pszDisplayName) - 1);
pszClass[(int)(pszBetween - pszDisplayName) - 1] = 0;
TRACE("Device CLSID: %s\n", debugstr_w(pszClass));
res = CLSIDFromString(pszClass, &clsidDevice);
if (SUCCEEDED(res))
{
res = DEVENUM_ICreateDevEnum_CreateClassEnumerator((ICreateDevEnum *)(char*)&DEVENUM_CreateDevEnum, &clsidDevice, &pEm, 0);
if (res == S_FALSE) /* S_FALSE means no category */
res = MK_E_NOOBJECT;
}
if (SUCCEEDED(res))
{
pMoniker = DEVENUM_IMediaCatMoniker_Construct();
if (pMoniker)
{
if (RegCreateKeyW(((EnumMonikerImpl *)pEm)->hkey,
pszBetween,
&pMoniker->hkey) == ERROR_SUCCESS)
*ppmkOut = (LPMONIKER)pMoniker;
else
{
IMoniker_Release((LPMONIKER)pMoniker);
res = MK_E_NOOBJECT;
}
}
}
if (pEm)
IEnumMoniker_Release(pEm);
if (pszClass)
CoTaskMemFree(pszClass);
TRACE("-- returning: %lx\n", res);
return res;
}
/**********************************************************************
* IParseDisplayName_Vtbl
*/
static IParseDisplayNameVtbl IParseDisplayName_Vtbl =
{
DEVENUM_IParseDisplayName_QueryInterface,
DEVENUM_IParseDisplayName_AddRef,
DEVENUM_IParseDisplayName_Release,
DEVENUM_IParseDisplayName_ParseDisplayName
};
/* The one instance of this class */
ParseDisplayNameImpl DEVENUM_ParseDisplayName = { &IParseDisplayName_Vtbl, 0 };