org.apache.commons.compress.utils
Class ArchiveUtils

java.lang.Object
  org.apache.commons.compress.utils.ArchiveUtils

public class ArchiveUtils
extends Object

Generic Archive utilities

Method Summary

static boolean	isEqual(byte[] buffer1, byte[] buffer2) Compare byte buffers
static boolean	isEqual(byte[] buffer1, byte[] buffer2, boolean ignoreTrailingNulls) Compare byte buffers, optionally ignoring trailing nulls
static boolean	isEqual(byte[] buffer1, int offset1, int length1, byte[] buffer2, int offset2, int length2) Compare byte buffers
static boolean	isEqual(byte[] buffer1, int offset1, int length1, byte[] buffer2, int offset2, int length2, boolean ignoreTrailingNulls) Compare byte buffers, optionally ignoring trailing nulls
static boolean	isEqualWithNull(byte[] buffer1, int offset1, int length1, byte[] buffer2, int offset2, int length2) Compare byte buffers, ignoring trailing nulls
static boolean	matchAsciiBuffer(String expected, byte[] buffer) Check if buffer contents matches Ascii String.
static boolean	matchAsciiBuffer(String expected, byte[] buffer, int offset, int length) Check if buffer contents matches Ascii String.
static byte[]	toAsciiBytes(String inputString) Convert a string to Ascii bytes.
static String	toAsciiString(byte[] inputBytes) Convert an input byte array to a String using the ASCII character set.
static String	toString(ArchiveEntry entry) Generates a string containing the name, isDirectory setting and size of an entry.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

toString

public static String toString(ArchiveEntry entry)

Generates a string containing the name, isDirectory setting and size of an entry.

For example:
- 2000 main.c
d 100 testfiles

Returns:

the representation of the entry

matchAsciiBuffer

public static boolean matchAsciiBuffer(String expected,
                                       byte[] buffer,
                                       int offset,
                                       int length)

Check if buffer contents matches Ascii String.

Parameters:

expected -

buffer -

offset -

length -

Returns:

true if buffer is the same as the expected string

matchAsciiBuffer

public static boolean matchAsciiBuffer(String expected,
                                       byte[] buffer)

Check if buffer contents matches Ascii String.

Parameters:

expected -

buffer -

Returns:

true if buffer is the same as the expected string

toAsciiBytes

public static byte[] toAsciiBytes(String inputString)

Convert a string to Ascii bytes. Used for comparing "magic" strings which need to be independent of the default Locale.

Parameters:

inputString -

Returns:

the bytes

toAsciiString

public static String toAsciiString(byte[] inputBytes)

Convert an input byte array to a String using the ASCII character set.

Parameters:

inputBytes -

Returns:

the bytes, interpreted as an Ascii string

isEqual

public static boolean isEqual(byte[] buffer1,
                              int offset1,
                              int length1,
                              byte[] buffer2,
                              int offset2,
                              int length2,
                              boolean ignoreTrailingNulls)

Compare byte buffers, optionally ignoring trailing nulls

Parameters:

buffer1 -

offset1 -

length1 -

buffer2 -

offset2 -

length2 -

ignoreTrailingNulls -

Returns:

true if buffer1 and buffer2 have same contents, having regard to trailing nulls

isEqual

public static boolean isEqual(byte[] buffer1,
                              int offset1,
                              int length1,
                              byte[] buffer2,
                              int offset2,
                              int length2)

Compare byte buffers

Parameters:

buffer1 -

offset1 -

length1 -

buffer2 -

offset2 -

length2 -

Returns:

true if buffer1 and buffer2 have same contents

isEqual

public static boolean isEqual(byte[] buffer1,
                              byte[] buffer2)

Compare byte buffers

Parameters:

buffer1 -

buffer2 -

Returns:

true if buffer1 and buffer2 have same contents

isEqual

public static boolean isEqual(byte[] buffer1,
                              byte[] buffer2,
                              boolean ignoreTrailingNulls)

Compare byte buffers, optionally ignoring trailing nulls

Parameters:

buffer1 -

buffer2 -

ignoreTrailingNulls -

Returns:

true if buffer1 and buffer2 have same contents

isEqualWithNull

public static boolean isEqualWithNull(byte[] buffer1,
                                      int offset1,
                                      int length1,
                                      byte[] buffer2,
                                      int offset2,
                                      int length2)

Compare byte buffers, ignoring trailing nulls

Parameters:

buffer1 -

offset1 -

length1 -

buffer2 -

offset2 -

length2 -

Returns:

true if buffer1 and buffer2 have same contents, having regard to trailing nulls