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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
// ---------------------------------------------------------------------------
// SString_COM.cpp
// ---------------------------------------------------------------------------
#include "stdafx.h"
#include "sstring.h"
#include "ex.h"
#include "holder.h"
#define DEFAULT_RESOURCE_STRING_SIZE 255
//----------------------------------------------------------------------------
// Load the string resource into this string.
//----------------------------------------------------------------------------
BOOL SString::LoadResource(CCompRC::ResourceCategory eCategory, int resourceID)
{
return SUCCEEDED(LoadResourceAndReturnHR(eCategory, resourceID));
}
HRESULT SString::LoadResourceAndReturnHR(CCompRC::ResourceCategory eCategory, int resourceID)
{
WRAPPER_NO_CONTRACT;
return LoadResourceAndReturnHR(NULL, eCategory,resourceID);
}
HRESULT SString::LoadResourceAndReturnHR(CCompRC* pResourceDLL, CCompRC::ResourceCategory eCategory, int resourceID)
{
CONTRACT(BOOL)
{
INSTANCE_CHECK;
NOTHROW;
}
CONTRACT_END;
HRESULT hr = E_FAIL;
#ifndef FEATURE_UTILCODE_NO_DEPENDENCIES
if (pResourceDLL == NULL)
{
pResourceDLL = CCompRC::GetDefaultResourceDll();
}
if (pResourceDLL != NULL)
{
int size = 0;
EX_TRY
{
if (GetRawCount() == 0)
Resize(DEFAULT_RESOURCE_STRING_SIZE, REPRESENTATION_UNICODE);
while (TRUE)
{
// First try and load the string in the amount of space that we have.
// In fatal error reporting scenarios, we may not have enough memory to
// allocate a larger buffer.
hr = pResourceDLL->LoadString(eCategory, resourceID, GetRawUnicode(), GetRawCount()+1, &size);
if (hr != HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER))
{
if (FAILED(hr))
{
Clear();
break;
}
// Although we cannot generally detect truncation, we can tell if we
// used up all the space (in which case we will assume truncation.)
if (size < (int)GetRawCount())
{
break;
}
}
// Double the size and try again.
Resize(size*2, REPRESENTATION_UNICODE);
}
if (SUCCEEDED(hr))
{
Truncate(Begin() + (COUNT_T) wcslen(GetRawUnicode()));
}
Normalize();
}
EX_CATCH
{
hr = E_FAIL;
}
EX_END_CATCH(SwallowAllExceptions);
}
#endif //!FEATURE_UTILCODE_NO_DEPENDENCIES
RETURN hr;
} // SString::LoadResourceAndReturnHR
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