resourcestring.cpp

// 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.


#include<stdio.h>
#include<utilcode.h>
#include"resourcestring.h"

staticintCompareNativeStringResources(constvoid *a, constvoid *b)
{
unsignedint resourceIdA = ((NativeStringResource*)a)->resourceId;
unsignedint resourceIdB = ((NativeStringResource*)b)->resourceId;

if (resourceIdA < resourceIdB)
return -1;

if (resourceIdA == resourceIdB)
return0;

return1;
}

intLoadNativeStringResource(const NativeStringResourceTable &nativeStringResourceTable, unsignedint iResourceID, WCHAR* szBuffer, int iMax, int *pcwchUsed)
{
int len = 0;
if (szBuffer && iMax)
 {
// Search the sorted set of resources for the ID we're interested in.
 NativeStringResource searchEntry = {iResourceID, NULL};
 NativeStringResource *resourceEntry = (NativeStringResource*)bsearch(
 &searchEntry,
 nativeStringResourceTable.table,
 nativeStringResourceTable.size,
sizeof(NativeStringResource),
 CompareNativeStringResources);

if (resourceEntry != NULL)
 {
 len = PAL_GetResourceString(NULL, resourceEntry->resourceString, szBuffer, iMax);
if (len == 0)
 {
int hr = HRESULT_FROM_GetLastError();

// Tell the caller if the buffer isn't big enough
if (hr == HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER) && pcwchUsed)
 *pcwchUsed = iMax;

return hr;
 }
 }
else
 {
// The resource ID wasn't found in our array. Fall back on returning the ID as a string.
 len = _snwprintf_s(szBuffer, iMax, _TRUNCATE, W("[Undefined resource string ID:0x%X]"), iResourceID);
if (len < 0)
 {
// The only possible failure is that that string didn't fit the buffer. So the buffer contains
// partial string terminated by '\0'
// We could return ERROR_INSUFFICIENT_BUFFER, but we'll error on the side of caution here and
// actually show something (given that this is likely a scenario involving a bug/deployment issue)
 len = iMax - 1;
 }
 }
 }

if (pcwchUsed)
 {
 *pcwchUsed = len;
 }

return S_OK;
}