public class EndianUtils extends Object
This class provides static utility methods for input/output operations on numbers in Big and Little Endian formats.
Origin of code: Based on the version in POI
Modifier and Type | Class and Description |
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static class |
EndianUtils.BufferUnderrunException |
Constructor and Description |
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EndianUtils() |
Modifier and Type | Method and Description |
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static int |
getIntBE(byte[] data)
Get a BE int value from the beginning of a byte array
|
static int |
getIntBE(byte[] data,
int offset)
Get a BE int value from a byte array
|
static int |
getIntLE(byte[] data)
Get a LE int value from the beginning of a byte array
|
static int |
getIntLE(byte[] data,
int offset)
Get a LE int value from a byte array
|
static long |
getLongLE(byte[] data,
int offset)
Get a LE long value from a byte array
|
static short |
getShortBE(byte[] data)
Get a BE short value from the beginning of a byte array
|
static short |
getShortBE(byte[] data,
int offset)
Get a BE short value from a byte array
|
static short |
getShortLE(byte[] data)
Get a LE short value from the beginning of a byte array
|
static short |
getShortLE(byte[] data,
int offset)
Get a LE short value from a byte array
|
static short |
getUByte(byte[] data,
int offset)
get the unsigned value of a byte.
|
static long |
getUIntBE(byte[] data)
Get a BE unsigned int value from a byte array
|
static long |
getUIntBE(byte[] data,
int offset)
Get a BE unsigned int value from a byte array
|
static long |
getUIntLE(byte[] data)
Get a LE unsigned int value from a byte array
|
static long |
getUIntLE(byte[] data,
int offset)
Get a LE unsigned int value from a byte array
|
static int |
getUShortBE(byte[] data)
Get a BE unsigned short value from the beginning of a byte array
|
static int |
getUShortBE(byte[] data,
int offset)
Get a BE unsigned short value from a byte array
|
static int |
getUShortLE(byte[] data)
Get a LE unsigned short value from the beginning of a byte array
|
static int |
getUShortLE(byte[] data,
int offset)
Get a LE unsigned short value from a byte array
|
static int |
readIntBE(InputStream stream)
Get a BE int value from an InputStream
|
static int |
readIntLE(InputStream stream)
Get a LE int value from an InputStream
|
static long |
readLongBE(InputStream stream)
Get a NE long value from an InputStream
|
static long |
readLongLE(InputStream stream)
Get a LE long value from an InputStream
|
static short |
readShortBE(InputStream stream)
Get a BE short value from an InputStream
|
static short |
readShortLE(InputStream stream)
Get a LE short value from an InputStream
|
static long |
readUE7(InputStream stream)
Gets the integer value that is stored in UTF-8 like fashion, in Big Endian
but with the high bit on each number indicating if it continues or not
|
static long |
readUIntBE(InputStream stream)
Get a BE unsigned int value from an InputStream
|
static long |
readUIntLE(InputStream stream)
Get a LE unsigned int value from an InputStream
|
static int |
readUShortBE(InputStream stream) |
static int |
readUShortLE(InputStream stream) |
static int |
ubyteToInt(byte b)
Convert an 'unsigned' byte to an integer.
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public static short readShortLE(InputStream stream) throws IOException, EndianUtils.BufferUnderrunException
stream
- the InputStream from which the short is to be readIOException
- will be propagated back to the callerEndianUtils.BufferUnderrunException
- if the stream cannot provide enough bytespublic static short readShortBE(InputStream stream) throws IOException, EndianUtils.BufferUnderrunException
stream
- the InputStream from which the short is to be readIOException
- will be propagated back to the callerEndianUtils.BufferUnderrunException
- if the stream cannot provide enough bytespublic static int readUShortLE(InputStream stream) throws IOException, EndianUtils.BufferUnderrunException
public static int readUShortBE(InputStream stream) throws IOException, EndianUtils.BufferUnderrunException
public static long readUIntLE(InputStream stream) throws IOException, EndianUtils.BufferUnderrunException
stream
- the InputStream from which the int is to be readIOException
- will be propagated back to the callerEndianUtils.BufferUnderrunException
- if the stream cannot provide enough bytespublic static long readUIntBE(InputStream stream) throws IOException, EndianUtils.BufferUnderrunException
stream
- the InputStream from which the int is to be readIOException
- will be propagated back to the callerEndianUtils.BufferUnderrunException
- if the stream cannot provide enough bytespublic static int readIntLE(InputStream stream) throws IOException, EndianUtils.BufferUnderrunException
stream
- the InputStream from which the int is to be readIOException
- will be propagated back to the callerEndianUtils.BufferUnderrunException
- if the stream cannot provide enough bytespublic static int readIntBE(InputStream stream) throws IOException, EndianUtils.BufferUnderrunException
stream
- the InputStream from which the int is to be readIOException
- will be propagated back to the callerEndianUtils.BufferUnderrunException
- if the stream cannot provide enough bytespublic static long readLongLE(InputStream stream) throws IOException, EndianUtils.BufferUnderrunException
stream
- the InputStream from which the long is to be readIOException
- will be propagated back to the callerEndianUtils.BufferUnderrunException
- if the stream cannot provide enough bytespublic static long readLongBE(InputStream stream) throws IOException, EndianUtils.BufferUnderrunException
stream
- the InputStream from which the long is to be readIOException
- will be propagated back to the callerEndianUtils.BufferUnderrunException
- if the stream cannot provide enough bytespublic static long readUE7(InputStream stream) throws IOException
IOException
public static short getShortLE(byte[] data)
data
- the byte arraypublic static short getShortLE(byte[] data, int offset)
data
- the byte arrayoffset
- a starting offset into the byte arraypublic static int getUShortLE(byte[] data)
data
- the byte arraypublic static int getUShortLE(byte[] data, int offset)
data
- the byte arrayoffset
- a starting offset into the byte arraypublic static short getShortBE(byte[] data)
data
- the byte arraypublic static short getShortBE(byte[] data, int offset)
data
- the byte arrayoffset
- a starting offset into the byte arraypublic static int getUShortBE(byte[] data)
data
- the byte arraypublic static int getUShortBE(byte[] data, int offset)
data
- the byte arrayoffset
- a starting offset into the byte arraypublic static int getIntLE(byte[] data)
data
- the byte arraypublic static int getIntLE(byte[] data, int offset)
data
- the byte arrayoffset
- a starting offset into the byte arraypublic static int getIntBE(byte[] data)
data
- the byte arraypublic static int getIntBE(byte[] data, int offset)
data
- the byte arrayoffset
- a starting offset into the byte arraypublic static long getUIntLE(byte[] data)
data
- the byte arraypublic static long getUIntLE(byte[] data, int offset)
data
- the byte arrayoffset
- a starting offset into the byte arraypublic static long getUIntBE(byte[] data)
data
- the byte arraypublic static long getUIntBE(byte[] data, int offset)
data
- the byte arrayoffset
- a starting offset into the byte arraypublic static long getLongLE(byte[] data, int offset)
data
- the byte arrayoffset
- a starting offset into the byte arraypublic static int ubyteToInt(byte b)
b
- Description of the Parameterpublic static short getUByte(byte[] data, int offset)
data
- the byte array.offset
- a starting offset into the byte array.Copyright © 2007–2020 The Apache Software Foundation. All rights reserved.