org.zkoss.util
Class Checksums

java.lang.Object
  org.zkoss.util.Checksums

public class Checksums
extends java.lang.Object

Checksum relevant utilities.

Author:

tomyeh

Field Summary

static java.lang.String

SKIPS The default skips.

Constructor Summary

Checksums()

Method Summary

static char	getChecksum(java.lang.StringBuffer val, java.lang.String skips) Returns the checksum character of the specified val.
static char	getChecksum(java.lang.String val, java.lang.String skips) Returns the checksum character of the specified val.
static java.lang.String	toReadable(long val, java.lang.String skips) Returns a readable string plus a checksum.
static char	toReadableChar(int val, java.lang.String skips) Returns the character of the specified val by skipping skips.

Methods inherited from class java.lang.Object

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

Field Detail

SKIPS

public static final java.lang.String SKIPS

The default skips.

See Also:

Constant Field Values

Constructor Detail

Checksums

public Checksums()

Method Detail

toReadable

public static final java.lang.String toReadable(long val,
                                                java.lang.String skips)

Returns a readable string plus a checksum.

Parameters:

skips - specifies a string of characters that shall be skipped. If null specified, "DEOX" is assumed. To skip nothing, specify "". You can only specify upper-case letters: A-Z. And, it must be in alphabetic order.

toReadableChar

public static final char toReadableChar(int val,
                                        java.lang.String skips)

Returns the character of the specified val by skipping skips. Note: the caller must ensure val is in the right range: 0 - (36 - skips.length()).

Parameters:

skips - specifies a string of characters that shall be skipped. If null specified, "DEOX" is assumed. To skip nothing, specify "". You can only specify upper-case letters: A-Z. And, it must be in alphabetic order.

getChecksum

public static final char getChecksum(java.lang.String val,
                                     java.lang.String skips)

Returns the checksum character of the specified val.

It use toReadableChar(int, java.lang.String) to convert the checksum to a character.

Note: it skips '-' and ' '.

Parameters:

skips - specifies a string of characters that shall be skipped. If null specified, "DEOX" is assumed. To skip nothing, specify "". You can only specify upper-case letters: A-Z. And, it must be in alphabetic order.

getChecksum

public static final char getChecksum(java.lang.StringBuffer val,
                                     java.lang.String skips)

Returns the checksum character of the specified val.

It use toReadableChar(int, java.lang.String) to convert the checksum to a character.

Note: it skips '-' and ' '.

Parameters:

skips - specifies a string of characters that shall be skipped. If null specified, "DEOX" is assumed. To skip nothing, specify "". You can only specify upper-case letters: A-Z. And, it must be in alphabetic order.