AkUInt32 CAkFilePackageLUT::StringMap::GetID( const AkOSChar* in_pszString )
{
// Make string lower case.
size_t uStrLen = AKPLATFORM::OsStrLen(in_pszString)+1;
AkOSChar * pszLowerCaseString = (AkOSChar*)AkAlloca(uStrLen*sizeof(AkOSChar));
AKASSERT( pszLowerCaseString );
AKPLATFORM::SafeStrCpy(pszLowerCaseString, in_pszString, uStrLen );
_MakeLower( pszLowerCaseString );
// 'this' is m_uNumStrings. +1 points to the beginning of the StringEntry array.
StringEntry * pTable = (StringEntry*)((AkUInt32*)this + 1);
// Binary search: strings are sorted (case sensitive).
AkInt32 uTop = 0, uBottom = m_uNumStrings-1;
do
{
AkInt32 uThis = ( uBottom - uTop ) / 2 + uTop;
AkOSChar * pString = (AkOSChar*)((AkUInt8*)this + pTable[ uThis ].uOffset);
int iCmp = AKPLATFORM::OsStrCmp( pString, pszLowerCaseString );
if ( 0 == iCmp )
return pTable[uThis].uID;
else if ( iCmp > 0 ) //in_pTable[ uThis ].pString > pszLowerCaseString
uBottom = uThis - 1;
else //in_pTable[ uThis ].pString < pszLowerCaseString
uTop = uThis + 1;
}
while ( uTop <= uBottom );
// ID not found.
return AK_INVALID_UNIQUE_ID;
}
// Find a soundbank ID by its name.
// Returns AK_INVALID_FILE_ID if no soundbank LUT is loaded.
AkFileID CAkFilePackageLUT::GetSoundBankID(
const AkOSChar *in_pszBankName // Soundbank name.
) {
// Remove the file extension if it was used.
AkUInt32 stringSize = (AkUInt32)AKPLATFORM::OsStrLen( in_pszBankName ) + 1;
AkOSChar *pStringWithoutExtension = (AkOSChar *)AkAlloca( (stringSize) * sizeof( AkOSChar ) );
AKPLATFORM::SafeStrCpy( pStringWithoutExtension, in_pszBankName, stringSize );
RemoveFileExtension( pStringWithoutExtension );
// Hash
return AK::SoundEngine::GetIDFromString( pStringWithoutExtension );
}
