com.aowagie.text

Class Utilities

java.lang.Object

com.aowagie.text.Utilities

public class Utilities
extends Object

A collection of convenience methods that were present in many different iText classes.

Constructor Summary

Constructors

Constructor and Description
Utilities()

Method Summary

Modifier and Type	Method and Description
static Object[][]	addToArray(Object[][] original, Object[] item) Utility method to extend an array.
static boolean	checkTrueOrFalse(Properties attributes, String key) Checks for a true/false value of a key in a Properties object.
static int	convertToUtf32(char[] text, int idx) Converts a unicode character in a character array to a UTF 32 code point value.
static int	convertToUtf32(char highSurrogate, char lowSurrogate) Returns the code point of a UTF32 character corresponding with a high and a low surrogate value.
static int	convertToUtf32(String text, int idx) Converts a unicode character in a String to a UTF32 code point value
static boolean	isSurrogateHigh(char c) Check if the value of a character belongs to a certain interval that indicates it's the higher part of a surrogate pair.
static boolean	isSurrogatePair(char[] text, int idx) Checks if two subsequent characters in a character array are are the higher and the lower character in a surrogate pair (and therefore eligible for conversion to a UTF 32 character).
static boolean	isSurrogatePair(String text, int idx) Checks if two subsequent characters in a String are are the higher and the lower character in a surrogate pair (and therefore eligible for conversion to a UTF 32 character).
static void	skip(InputStream is, int size) This method is an alternative for the InputStream.skip() -method that doesn't seem to work properly for big values of size .

Methods inherited from class java.lang.Object

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

Constructor Detail

Utilities

public Utilities()

Method Detail

addToArray

public static Object[][] addToArray(Object[][] original,
                                    Object[] item)

Utility method to extend an array.

Parameters:

original - the original array or null

item - the item to be added to the array

Returns:

a new array with the item appended

checkTrueOrFalse

public static boolean checkTrueOrFalse(Properties attributes,
                                       String key)

Checks for a true/false value of a key in a Properties object.

Parameters:

attributes - Attributes with properties

key - Key to search

Returns:

a true/false value of a key in a Properties object

skip

public static void skip(InputStream is,
                        int size)
                 throws IOException

This method is an alternative for the InputStream.skip() -method that doesn't seem to work properly for big values of size .

Parameters:

is - the InputStream

size - the number of bytes to skip

Throws:

IOException - Exception with information about the error

isSurrogateHigh

public static boolean isSurrogateHigh(char c)

Check if the value of a character belongs to a certain interval that indicates it's the higher part of a surrogate pair.

Parameters:

c - the character

Returns:

true if the character belongs to the interval

Since:

2.1.2

isSurrogatePair

public static boolean isSurrogatePair(String text,
                                      int idx)

Checks if two subsequent characters in a String are are the higher and the lower character in a surrogate pair (and therefore eligible for conversion to a UTF 32 character).

Parameters:

text - the String with the high and low surrogate characters

idx - the index of the 'high' character in the pair

Returns:

true if the characters are surrogate pairs

Since:

2.1.2

isSurrogatePair

public static boolean isSurrogatePair(char[] text,
                                      int idx)

Checks if two subsequent characters in a character array are are the higher and the lower character in a surrogate pair (and therefore eligible for conversion to a UTF 32 character).

Parameters:

text - the character array with the high and low surrogate characters

idx - the index of the 'high' character in the pair

Returns:

true if the characters are surrogate pairs

Since:

2.1.2

convertToUtf32

public static int convertToUtf32(char highSurrogate,
                                 char lowSurrogate)

Returns the code point of a UTF32 character corresponding with a high and a low surrogate value.

Parameters:

highSurrogate - the high surrogate value

lowSurrogate - the low surrogate value

Returns:

a code point value

Since:

2.1.2

convertToUtf32

public static int convertToUtf32(char[] text,
                                 int idx)

Converts a unicode character in a character array to a UTF 32 code point value.

Parameters:

text - a character array that has the unicode character(s)

idx - the index of the 'high' character

Returns:

the code point value

Since:

2.1.2

convertToUtf32

public static int convertToUtf32(String text,
                                 int idx)

Converts a unicode character in a String to a UTF32 code point value

Parameters:

text - a String that has the unicode character(s)

idx - the index of the 'high' character

Returns:

the codepoint value

Since:

2.1.2