reactos/dll/directx/wine/devenum/parsedisplayname.c

   1 /*
   2  *      IParseDisplayName implementation for DEVENUM.dll
   3  *
   4  * Copyright (C) 2002 Robert Shearman
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  * NOTES ON THIS FILE:
  21  * - Implements IParseDisplayName interface which creates a moniker
  22  *   from a string in a special format
  23  */
  24
  25 #include "devenum_private.h"
  26
  27 static HRESULT WINAPI DEVENUM_IParseDisplayName_QueryInterface(IParseDisplayName *iface,
  28         REFIID riid, void **ppv)
  29 {
  30     TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
  31
  32     if (!ppv)
  33         return E_POINTER;
  34
  35     if (IsEqualGUID(riid, &IID_IUnknown) ||
  36         IsEqualGUID(riid, &IID_IParseDisplayName))
  37     {
  38         *ppv = iface;
  39         IParseDisplayName_AddRef(iface);
  40         return S_OK;
  41     }
  42
  43     FIXME("- no interface IID: %s\n", debugstr_guid(riid));
  44     *ppv = NULL;
  45     return E_NOINTERFACE;
  46 }
  47
  48 static ULONG WINAPI DEVENUM_IParseDisplayName_AddRef(IParseDisplayName *iface)
  49 {
  50     TRACE("\n");
  51
  52     DEVENUM_LockModule();
  53
  54     return 2; /* non-heap based object */
  55 }
  56
  57 static ULONG WINAPI DEVENUM_IParseDisplayName_Release(IParseDisplayName *iface)
  58 {
  59     TRACE("\n");
  60
  61     DEVENUM_UnlockModule();
  62
  63     return 1; /* non-heap based object */
  64 }
  65
  66 /**********************************************************************
  67  * DEVENUM_IParseDisplayName_ParseDisplayName
  68  *
  69  *  Creates a moniker referenced to by the display string argument
  70  *
  71  * POSSIBLE BUGS:
  72  *  Might not handle more complicated strings properly (ie anything
  73  *  not in "@device:sw:{CLSID1}\<filter name or CLSID>" format
  74  */
  75 static HRESULT WINAPI DEVENUM_IParseDisplayName_ParseDisplayName(IParseDisplayName *iface,
  76         IBindCtx *pbc, LPOLESTR pszDisplayName, ULONG *pchEaten, IMoniker **ppmkOut)
  77 {
  78     LPOLESTR pszBetween = NULL;
  79     LPOLESTR pszClass = NULL;
  80     MediaCatMoniker * pMoniker = NULL;
  81     CLSID clsidDevice;
  82     HRESULT res = S_OK;
  83     WCHAR wszRegKeyName[MAX_PATH];
  84     HKEY hbasekey;
  85     int classlen;
  86     static const WCHAR wszRegSeparator[] =   {'\\', 0 };
  87
  88     TRACE("(%p, %s, %p, %p)\n", pbc, debugstr_w(pszDisplayName), pchEaten, ppmkOut);
  89
  90     *ppmkOut = NULL;
  91     if (pchEaten)
  92         *pchEaten = strlenW(pszDisplayName);
  93
  94     pszDisplayName = strchrW(pszDisplayName, '{');
  95     pszBetween = strchrW(pszDisplayName, '}') + 2;
  96
  97     /* size = pszBetween - pszDisplayName - 1 (for '\\' after CLSID)
  98      * + 1 (for NULL character)
  99      */
 100     classlen = (int)(pszBetween - pszDisplayName - 1);
 101     pszClass = CoTaskMemAlloc((classlen + 1) * sizeof(WCHAR));
 102     if (!pszClass)
 103         return E_OUTOFMEMORY;
 104
 105     memcpy(pszClass, pszDisplayName, classlen * sizeof(WCHAR));
 106     pszClass[classlen] = 0;
 107
 108     TRACE("Device CLSID: %s\n", debugstr_w(pszClass));
 109
 110     res = CLSIDFromString(pszClass, &clsidDevice);
 111
 112     if (SUCCEEDED(res))
 113     {
 114         res = DEVENUM_GetCategoryKey(&clsidDevice, &hbasekey, wszRegKeyName, MAX_PATH);
 115     }
 116
 117     if (SUCCEEDED(res))
 118     {
 119         pMoniker = DEVENUM_IMediaCatMoniker_Construct();
 120         if (pMoniker)
 121         {
 122             strcatW(wszRegKeyName, wszRegSeparator);
 123             strcatW(wszRegKeyName, pszBetween);
 124
 125             if (RegCreateKeyW(hbasekey, wszRegKeyName, &pMoniker->hkey) == ERROR_SUCCESS)
 126                 *ppmkOut = &pMoniker->IMoniker_iface;
 127             else
 128             {
 129                 IMoniker_Release(&pMoniker->IMoniker_iface);
 130                 res = MK_E_NOOBJECT;
 131             }
 132         }
 133     }
 134
 135     CoTaskMemFree(pszClass);
 136
 137     TRACE("-- returning: %x\n", res);
 138     return res;
 139 }
 140
 141 /**********************************************************************
 142  * IParseDisplayName_Vtbl
 143  */
 144 static const IParseDisplayNameVtbl IParseDisplayName_Vtbl =
 145 {
 146     DEVENUM_IParseDisplayName_QueryInterface,
 147     DEVENUM_IParseDisplayName_AddRef,
 148     DEVENUM_IParseDisplayName_Release,
 149     DEVENUM_IParseDisplayName_ParseDisplayName
 150 };
 151
 152 /* The one instance of this class */
 153 IParseDisplayName DEVENUM_ParseDisplayName = { &IParseDisplayName_Vtbl };