String CacheFileFromUrl(const String &url) {
Md5Hash hash;
ByteBuffer *utf8url = StringUtil::StringToUtf8N(url);
hash.Initialize();
hash.Update(*utf8url);
ByteBuffer *hashBuffer = hash.FinalizeN();
String hashString(VKUApp::GetInstance()->GetCacheDir());
byte currentByte;
while(hashBuffer->GetRemaining() > 0) {
hashBuffer->GetByte(currentByte);
hashString.Append(hexTable[currentByte]);
}
hashString.Append(".jpg");
delete utf8url;
delete hashBuffer;
return hashString;
}
static KDbool convString2Utf8 ( KDchar* pszDst, KDsize uMaxLen, String strSrc )
{
ByteBuffer* pBuff = KD_NULL;
KDsize uCnt = 0;
pBuff = StringUtil::StringToUtf8N ( strSrc );
if ( !pBuff )
{
goto end;
}
while ( pBuff->HasRemaining ( ) )
{
byte b;
pBuff->GetByte ( b );
if ( uCnt < ( uMaxLen - 1 ) )
{
pszDst [ uCnt++ ] = b;
}
else
{
break;
}
}
pszDst [ uCnt ] = '\0';
end :
if ( pBuff )
{
delete pBuff;
}
return KD_TRUE;
}