public static void copy(
@NotNull InputStream inputStream, int maxSize, @NotNull OutputStream outputStream)
throws IOException {
final byte[] buffer = BUFFER.get();
int toRead = maxSize;
while (toRead > 0) {
int read = inputStream.read(buffer, 0, Math.min(buffer.length, toRead));
if (read < 0) break;
toRead -= read;
outputStream.write(buffer, 0, read);
}
}
public static boolean processFirstBytes(
@NotNull InputStream stream, int length, @NotNull Processor<ByteSequence> processor)
throws IOException {
final byte[] bytes = BUFFER.get();
assert bytes.length >= length
: "Cannot process more than " + bytes.length + " in one call, requested:" + length;
int n = stream.read(bytes, 0, length);
if (n <= 0) return false;
return processor.process(new ByteSequence(bytes, 0, n));
}
@NotNull
public static byte[] loadFirst(@NotNull InputStream stream, int maxLength) throws IOException {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
final byte[] bytes = BUFFER.get();
while (maxLength > 0) {
int n = stream.read(bytes, 0, Math.min(maxLength, bytes.length));
if (n <= 0) break;
buffer.write(bytes, 0, n);
maxLength -= n;
}
buffer.close();
return buffer.toByteArray();
}