Apache Tomcat 6.0.41

org.apache.tomcat.util.buf
Class Ascii

java.lang.Object
  extended by org.apache.tomcat.util.buf.Ascii

public final class Ascii
extends java.lang.Object

This class implements some basic ASCII character handling functions.

Author:
dac@eng.sun.com, James Todd [gonzo@eng.sun.com]

Constructor Summary
Ascii()
           
 
Method Summary
static boolean isAlpha(int c)
          Returns true if the specified ASCII character is upper or lower case.
static boolean isDigit(int c)
          Returns true if the specified ASCII character is a digit.
static boolean isLower(int c)
          Returns true if the specified ASCII character is lower case.
static boolean isUpper(int c)
          Returns true if the specified ASCII character is upper case.
static boolean isWhite(int c)
          Returns true if the specified ASCII character is white space.
static int parseInt(byte[] b, int off, int len)
          Parses an unsigned integer from the specified subarray of bytes.
static int parseInt(char[] b, int off, int len)
           
static long parseLong(byte[] b, int off, int len)
          Parses an unsigned long from the specified subarray of bytes.
static long parseLong(char[] b, int off, int len)
           
static int toLower(int c)
          Returns the lower case equivalent of the specified ASCII character.
static int toUpper(int c)
          Returns the upper case equivalent of the specified ASCII character.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Ascii

public Ascii()
Method Detail

toUpper

public static int toUpper(int c)
Returns the upper case equivalent of the specified ASCII character.


toLower

public static int toLower(int c)
Returns the lower case equivalent of the specified ASCII character.


isAlpha

public static boolean isAlpha(int c)
Returns true if the specified ASCII character is upper or lower case.


isUpper

public static boolean isUpper(int c)
Returns true if the specified ASCII character is upper case.


isLower

public static boolean isLower(int c)
Returns true if the specified ASCII character is lower case.


isWhite

public static boolean isWhite(int c)
Returns true if the specified ASCII character is white space.


isDigit

public static boolean isDigit(int c)
Returns true if the specified ASCII character is a digit.


parseInt

public static int parseInt(byte[] b,
                           int off,
                           int len)
                    throws java.lang.NumberFormatException
Parses an unsigned integer from the specified subarray of bytes.

Parameters:
b - the bytes to parse
off - the start offset of the bytes
len - the length of the bytes
Throws:
java.lang.NumberFormatException - if the integer format was invalid

parseInt

public static int parseInt(char[] b,
                           int off,
                           int len)
                    throws java.lang.NumberFormatException
Throws:
java.lang.NumberFormatException

parseLong

public static long parseLong(byte[] b,
                             int off,
                             int len)
                      throws java.lang.NumberFormatException
Parses an unsigned long from the specified subarray of bytes.

Parameters:
b - the bytes to parse
off - the start offset of the bytes
len - the length of the bytes
Throws:
java.lang.NumberFormatException - if the long format was invalid

parseLong

public static long parseLong(char[] b,
                             int off,
                             int len)
                      throws java.lang.NumberFormatException
Throws:
java.lang.NumberFormatException

Apache Tomcat 6.0.41

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