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wine/dlls/shlwapi/assoc.c

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/*
* SHLWAPI IQueryAssociations helper functions
*
* Copyright 2002 Jon Griffiths
*
* 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
* These function simplify the process of using the IQueryAssociations
* interface, primarily by providing the means to get an interface pointer.
* For those not interested in the object, the AssocQuery* functions hide
* the object completely and simply provide the functionality.
*
* We require the implementation from shell32 because there is no interface
* for exporting an IQueryAssociations object available from that dll -
* as it is, we need the constructor.
*/
#include "windef.h"
#include "winnls.h"
#include "winreg.h"
#include "shlguid.h"
#include "shlwapi.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(shell);
/* Default IQueryAssociations::Init() flags */
#define SHLWAPI_DEF_ASSOCF (ASSOCF_INIT_BYEXENAME|ASSOCF_INIT_DEFAULTTOSTAR| \
ASSOCF_INIT_DEFAULTTOFOLDER)
/* FIXME:
* This is a temporary placeholder. We need the whole IQueryAssociations object.
*/
static IQueryAssociations* IQueryAssociations_Constructor()
{
FIXME("() stub!\n");
return NULL;
}
/*************************************************************************
* SHLWAPI_ParamAToW
*
* Internal helper function: Convert ASCII parameter to Unicode.
*/
static BOOL SHLWAPI_ParamAToW(LPCSTR lpszParam, LPWSTR lpszBuff, DWORD dwLen,
LPWSTR* lpszOut)
{
if (lpszParam)
{
DWORD dwStrLen = lstrlenA(lpszParam);
if (dwStrLen < dwLen)
{
*lpszOut = lpszBuff; /* Use Buffer, it is big enough */
}
else
{
/* Create a new buffer big enough for the string */
*lpszOut = (LPWSTR)HeapAlloc(GetProcessHeap(), 0,
(dwStrLen + 1) * sizeof(WCHAR));
if (!*lpszOut)
return FALSE;
}
MultiByteToWideChar(0, 0, lpszParam, -1, *lpszOut, -1);
}
else
*lpszOut = NULL;
return TRUE;
}
/*************************************************************************
* AssocCreate [SHLWAPI.253]
*
* Create a new IQueryAssociations object.
*
* PARAMS
* clsid [I] CLSID of object
* refiid [I] REFIID of interface
* lpInterface [O] Destination for the created IQueryAssociations object
*
* RETURNS
* Success: S_OK. lpInterface contains the new object
* Failure: An HRESULT error value
*/
HRESULT WINAPI AssocCreate(CLSID clsid, REFIID refiid, void **lpInterface)
{
HRESULT hRet;
IQueryAssociations* lpAssoc;
TRACE("(%s,%s,%p)\n", debugstr_guid(&clsid), debugstr_guid(refiid),
lpInterface);
if (!lpInterface)
return E_INVALIDARG;
*(DWORD*)lpInterface = 0;
if (!IsEqualGUID(&clsid, &IID_IQueryAssociations))
return E_NOTIMPL;
lpAssoc = IQueryAssociations_Constructor();
if (!lpAssoc)
return E_OUTOFMEMORY;
hRet = IQueryAssociations_QueryInterface(lpAssoc, refiid, lpInterface);
IQueryAssociations_Release(lpAssoc);
return hRet;
}
/*************************************************************************
* AssocQueryKeyW [SHLWAPI.255]
*
* See AssocQueryKeyA.
*/
HRESULT WINAPI AssocQueryKeyW(ASSOCF flags, ASSOCKEY key, LPCWSTR pszAssoc,
LPCWSTR pszExtra, HKEY *phkeyOut)
{
HRESULT hRet;
IQueryAssociations* lpAssoc;
lpAssoc = IQueryAssociations_Constructor();
if (!lpAssoc)
return E_OUTOFMEMORY;
flags &= SHLWAPI_DEF_ASSOCF;
hRet = IQueryAssociations_Init(lpAssoc, flags, pszAssoc, (HKEY)0, (HWND)0);
if (SUCCEEDED(hRet))
hRet = IQueryAssociations_GetKey(lpAssoc, flags, key, pszExtra, phkeyOut);
IQueryAssociations_Release(lpAssoc);
return hRet;
}
/*************************************************************************
* AssocQueryKeyA [SHLWAPI.254]
*
* Get a file association key from the registry.
*
* PARAMS
* flags [I] Flags for the search
* key [I] Type of key to get
* pszAssoc [I] Key name to search below
* pszExtra [I] Extra information about the key location
* phkeyOut [O] Destination for the association key
*
* RETURNS
* Success: S_OK. phkeyOut contains the key
* Failure: An HRESULT error code
*/
HRESULT WINAPI AssocQueryKeyA(ASSOCF flags, ASSOCKEY key, LPCSTR pszAssoc,
LPCSTR pszExtra, HKEY *phkeyOut)
{
WCHAR szAssocW[MAX_PATH], *lpszAssocW = NULL;
WCHAR szExtraW[MAX_PATH], *lpszExtraW = NULL;
HRESULT hRet = E_OUTOFMEMORY;
if (SHLWAPI_ParamAToW(pszAssoc, szAssocW, MAX_PATH, &lpszAssocW) &&
SHLWAPI_ParamAToW(pszExtra, szExtraW, MAX_PATH, &lpszExtraW))
{
hRet = AssocQueryKeyW(flags, key, lpszAssocW, lpszExtraW, phkeyOut);
}
if (lpszAssocW && lpszAssocW != szAssocW)
HeapFree(GetProcessHeap(), 0, lpszAssocW);
if (lpszExtraW && lpszExtraW != szExtraW)
HeapFree(GetProcessHeap(), 0, lpszExtraW);
return hRet;
}
/*************************************************************************
* AssocQueryStringW [SHLWAPI.384]
*
* See AssocQueryStringA.
*/
HRESULT WINAPI AssocQueryStringW(ASSOCF flags, ASSOCSTR str, LPCWSTR pszAssoc,
LPCWSTR pszExtra, LPWSTR pszOut, DWORD *pcchOut)
{
HRESULT hRet;
IQueryAssociations* lpAssoc;
if (!pcchOut)
return E_INVALIDARG;
lpAssoc = IQueryAssociations_Constructor();
if (!lpAssoc)
return E_OUTOFMEMORY;
hRet = IQueryAssociations_Init(lpAssoc, flags & SHLWAPI_DEF_ASSOCF,
pszAssoc, (HKEY)0, (HWND)0);
if (SUCCEEDED(hRet))
hRet = IQueryAssociations_GetString(lpAssoc, flags, str, pszExtra,
pszOut, pcchOut);
IQueryAssociations_Release(lpAssoc);
return hRet;
}
/*************************************************************************
* AssocQueryStringA [SHLWAPI.381]
*
* Get a file association string from the registry.
*
* PARAMS
* flags [I] Flags for the search
* str [I] Type of string to get
* pszAssoc [I] Key name to search below
* pszExtra [I] Extra information about the string location
* pszOut [O] Destination for the association string
* pcchOut [O] Length of pszOut
*
* RETURNS
* Success: S_OK. pszOut contains the string.
* Failure: An HRESULT error code.
*/
HRESULT WINAPI AssocQueryStringA(ASSOCF flags, ASSOCSTR str, LPCSTR pszAssoc,
LPCSTR pszExtra, LPSTR pszOut, DWORD *pcchOut)
{
WCHAR szAssocW[MAX_PATH], *lpszAssocW = NULL;
WCHAR szExtraW[MAX_PATH], *lpszExtraW = NULL;
HRESULT hRet = E_OUTOFMEMORY;
if (!pcchOut)
hRet = E_INVALIDARG;
else if (SHLWAPI_ParamAToW(pszAssoc, szAssocW, MAX_PATH, &lpszAssocW) &&
SHLWAPI_ParamAToW(pszExtra, szExtraW, MAX_PATH, &lpszExtraW))
{
WCHAR szReturnW[MAX_PATH], *lpszReturnW = szReturnW;
DWORD dwLenOut = *pcchOut;
if (dwLenOut >= MAX_PATH)
lpszReturnW = (LPWSTR)HeapAlloc(GetProcessHeap(), 0,
(dwLenOut + 1) * sizeof(WCHAR));
if (!lpszReturnW)
hRet = E_OUTOFMEMORY;
else
{
hRet = AssocQueryStringW(flags, str, lpszAssocW, lpszExtraW,
lpszReturnW, &dwLenOut);
if (SUCCEEDED(hRet))
WideCharToMultiByte(CP_ACP,0,szReturnW,-1,pszOut,dwLenOut,0,0);
*pcchOut = dwLenOut;
if (lpszReturnW && lpszReturnW != szReturnW)
HeapFree(GetProcessHeap(), 0, lpszReturnW);
}
}
if (lpszAssocW && lpszAssocW != szAssocW)
HeapFree(GetProcessHeap(), 0, lpszAssocW);
if (lpszExtraW && lpszExtraW != szExtraW)
HeapFree(GetProcessHeap(), 0, lpszExtraW);
return hRet;
}
/*************************************************************************
* AssocQueryStringByKeyW [SHLWAPI.383]
*
* See AssocQueryStringByKeyA.
*/
HRESULT WINAPI AssocQueryStringByKeyW(ASSOCF flags, ASSOCSTR str, HKEY hkAssoc,
LPCWSTR pszExtra, LPWSTR pszOut,
DWORD *pcchOut)
{
HRESULT hRet;
IQueryAssociations* lpAssoc;
lpAssoc = IQueryAssociations_Constructor();
if (!lpAssoc)
return E_OUTOFMEMORY;
flags &= SHLWAPI_DEF_ASSOCF;
hRet = IQueryAssociations_Init(lpAssoc, flags, 0, hkAssoc, (HWND)0);
if (SUCCEEDED(hRet))
hRet = IQueryAssociations_GetString(lpAssoc, flags, str, pszExtra,
pszOut, pcchOut);
IQueryAssociations_Release(lpAssoc);
return hRet;
}
/*************************************************************************
* AssocQueryStringByKeyA [SHLWAPI.382]
*
* Get a file association string from the registry, given a starting key.
*
* PARAMS
* flags [I] Flags for the search
* str [I] Type of string to get
* hkAssoc [I] Key to search below
* pszExtra [I] Extra information about the string location
* pszOut [O] Destination for the association string
* pcchOut [O] Length of pszOut
*
* RETURNS
* Success: S_OK. pszOut contains the string.
* Failure: An HRESULT error code.
*/
HRESULT WINAPI AssocQueryStringByKeyA(ASSOCF flags, ASSOCSTR str, HKEY hkAssoc,
LPCSTR pszExtra, LPSTR pszOut,
DWORD *pcchOut)
{
WCHAR szExtraW[MAX_PATH], *lpszExtraW;
WCHAR szReturnW[MAX_PATH], *lpszReturnW = szReturnW;
HRESULT hRet = E_OUTOFMEMORY;
if (!pcchOut)
hRet = E_INVALIDARG;
else if (SHLWAPI_ParamAToW(pszExtra, szExtraW, MAX_PATH, &lpszExtraW))
{
DWORD dwLenOut = *pcchOut;
if (dwLenOut >= MAX_PATH)
lpszReturnW = (LPWSTR)HeapAlloc(GetProcessHeap(), 0,
(dwLenOut + 1) * sizeof(WCHAR));
if (lpszReturnW)
{
hRet = AssocQueryStringByKeyW(flags, str, hkAssoc, lpszExtraW,
lpszReturnW, &dwLenOut);
if (SUCCEEDED(hRet))
WideCharToMultiByte(CP_ACP,0,szReturnW,-1,pszOut,dwLenOut,0,0);
*pcchOut = dwLenOut;
if (lpszReturnW != szReturnW)
HeapFree(GetProcessHeap(), 0, lpszReturnW);
}
}
if (lpszExtraW && lpszExtraW != szExtraW)
HeapFree(GetProcessHeap(), 0, lpszExtraW);
return hRet;
}
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