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public class ReadNCharactersGivenRead4II extends Reader4 {
private char[] buffer = new char[4];
private int offSet = 0;
private int readSize = 0;
public int read(char[] buf, int n) {
int readByteCount = 0;
boolean eof = false;
while (readByteCount < n && !eof) {
if (readSize == 0) {
readSize = read4(buffer);
if (readSize < 4) {
eof = true;
}
}
int bytes = Math.min(n - readByteCount, readSize);
System.arraycopy(buffer, offSet, buf, readByteCount, bytes);
offSet = (offSet + bytes) % 4;
readSize -= bytes;
readByteCount += bytes;
}
return readByteCount;
}
}
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