libKonogonka/src/main/java/libKonogonka/Tools/ASuperInFileProvider.java

43 lines
1.4 KiB
Java

/*
Copyright 2019-2020 Dmitry Isaenko
This file is part of Konogonka.
Konogonka is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Konogonka is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Konogonka. If not, see <https://www.gnu.org/licenses/>.
*/
package libKonogonka.Tools;
import java.io.IOException;
import java.io.PipedInputStream;
/**
* Any class of this type must be able to accept data from stream (and file as any other).
* */
public abstract class ASuperInFileProvider {
protected byte[] readFromStream(PipedInputStream pis, int size) throws IOException {
byte[] buffer = new byte[size];
int startingPos = 0;
int readCnt;
while (size > 0){
readCnt = pis.read(buffer, startingPos, size);
if (readCnt == -1)
return null;
startingPos += readCnt;
size -= readCnt;
}
return buffer;
}
}