90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
// Copyright (C) 1997-1998 Microsoft Corporation. All rights reserved.
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#include "header.h"
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#include <msi.h>
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extern HMODULE g_hmodMSI; // msi.dll module handle
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static const char txtMsiProvideQualifiedComponent[] = "MsiProvideQualifiedComponentA";
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static const char txtMsiDll[] = "Msi.dll";
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UINT (WINAPI *pMsiProvideQualifiedComponent)(LPCSTR szCategory, LPCSTR szQualifier, DWORD dwInstallMode, LPSTR lpPathBuf, DWORD *pcchPathBuf);
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/***************************************************************************
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FUNCTION: FindDarwinURL
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PURPOSE: Given a GUID and CHM filename, find the full path to the
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CHM file using Darwin.
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PARAMETERS:
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pszGUID
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pszChmFile
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cszResult
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RETURNS:
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COMMENTS:
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MODIFICATION DATES:
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01-Dec-1997 [ralphw]
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***************************************************************************/
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BOOL FindDarwinURL(PCSTR pszGUID, PCSTR pszChmFile, CStr* pcszResult)
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{
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if (!pMsiProvideQualifiedComponent) {
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if (!g_hmodMSI) {
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g_hmodMSI = LoadLibrary(txtMsiDll);
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ASSERT_COMMENT(g_hmodMSI, "Cannot load msi.dll");
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if (!g_hmodMSI)
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return FALSE;
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}
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(FARPROC&) pMsiProvideQualifiedComponent = GetProcAddress(g_hmodMSI,
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txtMsiProvideQualifiedComponent);
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ASSERT_COMMENT(pMsiProvideQualifiedComponent, "Cannot find the MsiProvideQualifiedComponent in msi.dll");
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if (!pMsiProvideQualifiedComponent)
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return FALSE;
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}
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char szPath[MAX_PATH];
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DWORD cb = sizeof(szPath);
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// Office passes in the LCID on the end of the GUID. Ick. Parse out the LCID.
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CStr szGUID(pszGUID) ;
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CStr szLCID;
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// Check last character for the ending bracket.
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int len = szGUID.strlen() ;
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if (szGUID.psz[len-1] != '}')
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{
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// No bracket. Assume we have a LCID.
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char* pLcid = strchr(szGUID.psz, '}') ;
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if (pLcid)
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{
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// Copy the LCID.
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pLcid++ ;
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szLCID = pLcid;
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// Remove from the guid.
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*pLcid = '\0' ;
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}
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}
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else
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{
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ASSERT(0) ;
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return FALSE ;
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}
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// Prepend the LCID to the CHM file name.
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CStr szQualifier ;
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szQualifier = szLCID.psz ;
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szQualifier += "\\" ;
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szQualifier += pszChmFile ;
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// Ask for the file.
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if (pMsiProvideQualifiedComponent(szGUID, szQualifier/*pszChmFile*/, INSTALLMODE_EXISTING,
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szPath, &cb) != ERROR_SUCCESS)
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return FALSE;
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*pcszResult = szPath;
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return TRUE;
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}
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