Small code change

This commit is contained in:
J-Jamet
2019-11-20 12:55:14 +01:00
parent be6f01dc99
commit 8013d3109a

View File

@@ -25,9 +25,9 @@ import java.util.Arrays;
import java.util.UUID;
/** Little endian version of the DataInputStream
/**
* Little endian version of the DataInputStream
* @author bpellin
*
*/
public class LEDataInputStream extends InputStream {
@@ -35,17 +35,16 @@ public class LEDataInputStream extends InputStream {
private InputStream baseStream;
public LEDataInputStream(InputStream in) {
baseStream = in;
public LEDataInputStream(InputStream inputStream) {
baseStream = inputStream;
}
/** Read a 32-bit value and return it as a long, so that it can
/**
* Read a 32-bit value and return it as a long, so that it can
* be interpreted as an unsigned integer.
* @return
* @throws IOException
*/
public long readUInt() throws IOException {
return readUInt(baseStream);
return readInt(baseStream) & INT_TO_LONG_MASK;
}
public int readInt() throws IOException {
@@ -54,7 +53,6 @@ public class LEDataInputStream extends InputStream {
public long readLong() throws IOException {
byte[] buf = readBytes(8);
return readLong(buf, 0);
}
@@ -153,60 +151,40 @@ public class LEDataInputStream extends InputStream {
}
}
public static int readUShort(InputStream is) throws IOException {
byte[] buf = new byte[2];
is.read(buf, 0, 2);
return readUShort(buf, 0);
}
public int readUShort() throws IOException {
return readUShort(baseStream);
byte[] buf = new byte[2];
baseStream.read(buf, 0, 2);
return readUShort(buf, 0);
}
/**
* Read an unsigned 16-bit value.
*
* @param buf
* @param offset
* @return
*/
public static int readUShort( byte[] buf, int offset ) {
return (buf[offset] & 0xFF) + ((buf[offset + 1] & 0xFF) << 8);
}
public static long readLong( byte buf[], int offset ) {
public static long readLong(byte[] buf, int offset ) {
return ((long)buf[offset] & 0xFF) + (((long)buf[offset + 1] & 0xFF) << 8)
+ (((long)buf[offset + 2] & 0xFF) << 16) + (((long)buf[offset + 3] & 0xFF) << 24)
+ (((long)buf[offset + 4] & 0xFF) << 32) + (((long)buf[offset + 5] & 0xFF) << 40)
+ (((long)buf[offset + 6] & 0xFF) << 48) + (((long)buf[offset + 7] & 0xFF) << 56);
}
public static long readUInt( byte buf[], int offset ) {
public static long readUInt(byte[] buf, int offset ) {
return (readInt(buf, offset) & INT_TO_LONG_MASK);
}
public static int readInt(InputStream is) throws IOException {
byte[] buf = new byte[4];
is.read(buf, 0, 4);
return readInt(buf, 0);
}
public static long readUInt(InputStream is) throws IOException {
return (readInt(is) & INT_TO_LONG_MASK);
}
/**
* Read a 32-bit value.
*
* @param buf
* @param offset
* @return
*/
public static int readInt( byte buf[], int offset ) {
public static int readInt(byte[] buf, int offset ) {
return (buf[offset] & 0xFF) + ((buf[offset + 1] & 0xFF) << 8) + ((buf[offset + 2] & 0xFF) << 16)
+ ((buf[offset + 3] & 0xFF) << 24);
}