com.itextpdf.io.util

Class TextUtil

java.lang.Object

com.itextpdf.io.util.TextUtil

public final class TextUtil
extends Object

This file is a helper class for internal usage only. Be aware that it's API and functionality may be changed in future.

Method Summary

Modifier and Type	Method and Description
static boolean	charsetIsSupported(String charsetName)
static String	charToString(char ch)
static char[]	convertFromUtf32(int codePoint) Converts a UTF32 code point value to a String with the corresponding character(s).
static String	convertFromUtf32(int[] text, int startPos, int endPos) /** Converts a UTF32 code point sequence to a String with the corresponding character(s).
static char[]	convertFromUtf32ToCharArray(int codePoint) Converts a UTF32 code point value to a char array with the corresponding character(s).
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)
static int	convertToUtf32(String text, int idx) Converts a unicode character in a String to a UTF32 code point value
static boolean	isCarriageReturnFollowedByLineFeed(GlyphLine glyphLine, int carriageReturnPosition)
static boolean	isNewLine(Glyph glyph)
static boolean	isNonPrintable(int c)
static boolean	isSpace(Glyph glyph)
static boolean	isSpaceOrWhitespace(Glyph glyph)
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	isSurrogateLow(char c) Check if the value of a character belongs to a certain interval that indicates it's the lower 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 boolean	isUni0020(Glyph g)
static boolean	isWhitespace(Glyph glyph)
static boolean	isWhitespaceOrNonPrintable(int code)

Methods inherited from class java.lang.Object

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

Method Detail

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

isSurrogateLow

public static boolean isSurrogateLow(char c)

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

Parameters:

c - the character

Returns:

true if the character belongs to the interval

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

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

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

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

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

convertToUtf32

public static int[] convertToUtf32(String text)

convertFromUtf32

public static char[] convertFromUtf32(int codePoint)

Converts a UTF32 code point value to a String with the corresponding character(s).

Parameters:

codePoint - a Unicode value

Returns:

the corresponding characters in a String

convertFromUtf32

public static String convertFromUtf32(int[] text,
                                      int startPos,
                                      int endPos)

/** Converts a UTF32 code point sequence to a String with the corresponding character(s).

Parameters:

text - a Unicode text sequence

startPos - start position of text to convert, inclusive

endPos - end position of txt to convert, exclusive

Returns:

the corresponding characters in a String

convertFromUtf32ToCharArray

public static char[] convertFromUtf32ToCharArray(int codePoint)

Converts a UTF32 code point value to a char array with the corresponding character(s).

Parameters:

codePoint - a Unicode value

Returns:

the corresponding characters in a char arrat

charToString

public static String charToString(char ch)

isNewLine

public static boolean isNewLine(Glyph glyph)

isCarriageReturnFollowedByLineFeed

public static boolean isCarriageReturnFollowedByLineFeed(GlyphLine glyphLine,
                                                         int carriageReturnPosition)

isSpaceOrWhitespace

public static boolean isSpaceOrWhitespace(Glyph glyph)

isWhitespace

public static boolean isWhitespace(Glyph glyph)

isSpace

public static boolean isSpace(Glyph glyph)

isUni0020

public static boolean isUni0020(Glyph g)

isNonPrintable

public static boolean isNonPrintable(int c)

isWhitespaceOrNonPrintable

public static boolean isWhitespaceOrNonPrintable(int code)

charsetIsSupported

public static boolean charsetIsSupported(String charsetName)