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Optimized implementation of LoadStringA.

This commit is contained in:
Dmitry Timoshkov 2000-06-15 00:11:06 +00:00 committed by Alexandre Julliard
parent 1d19cbe438
commit 3332bd068e
1 changed files with 13 additions and 32 deletions
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45
loader/resource.c
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@ -945,43 +945,24 @@ INT WINAPI LoadStringA( HINSTANCE instance, UINT resource_id,
LPSTR buffer, INT buflen )
{
INT retval;
INT wbuflen;
INT abuflen;
LPWSTR wbuf = NULL;
LPSTR abuf = NULL;
LPWSTR wbuf;
if ( buffer != NULL && buflen > 0 )
*buffer = 0;
TRACE("instance = %04x, id = %04x, buffer = %08x, "
"length = %d\n", instance, (int)resource_id, (int) buffer, buflen);
wbuflen = LoadStringW(instance,resource_id,NULL,0);
if ( !wbuflen )
if(buffer == NULL) /* asked size of string */
return LoadStringW(instance, resource_id, NULL, 0);
wbuf = HeapAlloc(GetProcessHeap(), 0, buflen * sizeof(WCHAR));
if(!wbuf)
return 0;
wbuflen ++;
retval = 0;
wbuf = HeapAlloc( GetProcessHeap(), 0, wbuflen * sizeof(WCHAR) );
wbuflen = LoadStringW(instance,resource_id,wbuf,wbuflen);
if ( wbuflen > 0 )
retval = LoadStringW(instance, resource_id, wbuf, buflen);
if(retval != 0)
{
abuflen = WideCharToMultiByte(CP_ACP,0,wbuf,wbuflen,NULL,0,NULL,NULL);
if ( abuflen > 0 )
{
if ( buffer == NULL || buflen == 0 )
retval = abuflen;
else
{
abuf = HeapAlloc( GetProcessHeap(), 0, abuflen * sizeof(CHAR) );
abuflen = WideCharToMultiByte(CP_ACP,0,wbuf,wbuflen,abuf,abuflen,NULL,NULL);
if ( abuflen > 0 )
{
abuflen = min(abuflen,buflen - 1);
memcpy( buffer, abuf, abuflen );
buffer[abuflen] = 0;
retval = abuflen;
}
HeapFree( GetProcessHeap(), 0, abuf );
}
}
retval = WideCharToMultiByte(CP_ACP, 0, wbuf, retval, buffer, buflen - 1, NULL, NULL);
buffer[retval] = 0;
TRACE("%s loaded !\n", debugstr_a(buffer));
}
HeapFree( GetProcessHeap(), 0, wbuf );