com.ibm.icu.text

Class ReplaceableString

java.lang.Object

com.ibm.icu.text.ReplaceableString

All Implemented Interfaces:

Replaceable

public class ReplaceableString
extends Object
implements Replaceable

ReplaceableString is an adapter class that implements the Replaceable API around an ordinary StringBuffer.

Note: This class does not support attributes and is not intended for general use. Most clients will need to implement Replaceable in their text representation class.

Copyright © IBM Corporation 1999. All rights reserved.

See Also:

Replaceable

Constructor Summary

Constructors

Constructor and Description
ReplaceableString() Construct a new empty object.
ReplaceableString(String str) Construct a new object with the given initial contents.
ReplaceableString(StringBuffer buf) Construct a new object using buf for internal storage.

Method Summary

Modifier and Type	Method and Description
int	char32At(int offset) Return the 32-bit code point at the given 16-bit offset into the text.
char	charAt(int offset) Return the character at the given position in this object.
void	copy(int start, int limit, int dest) Copy a substring of this object, retaining attribute (out-of-band) information.
void	getChars(int srcStart, int srcLimit, char[] dst, int dstStart) Copies characters from this object into the destination character array.
boolean	hasMetaData() Implements Replaceable
int	length() Return the number of characters contained in this object.
void	replace(int start, int limit, char[] chars, int charsStart, int charsLen) Replace a substring of this object with the given text.
void	replace(int start, int limit, String text) Replace zero or more characters with new characters.
String	substring(int start, int limit) Return a substring of the given string.
String	toString() Return the contents of this object as a String.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReplaceableString

public ReplaceableString(String str)

Construct a new object with the given initial contents.

Parameters:

str - initial contents

ReplaceableString

public ReplaceableString(StringBuffer buf)

Construct a new object using buf for internal storage. The contents of buf at the time of construction are used as the initial contents. Note! Modifications to buf will modify this object, and vice versa.

Parameters:

buf - object to be used as internal storage

ReplaceableString

public ReplaceableString()

Construct a new empty object.

Method Detail

toString

public String toString()

Return the contents of this object as a String.

Overrides:

toString in class Object

Returns:

string contents of this object

substring

public String substring(int start,
                        int limit)

Return a substring of the given string.

length

public int length()

Return the number of characters contained in this object. Replaceable API.

Specified by:

length in interface Replaceable

Returns:

number of 16-bit code units in text

charAt

public char charAt(int offset)

Return the character at the given position in this object. Replaceable API.

Specified by:

charAt in interface Replaceable

Parameters:

offset - offset into the contents, from 0 to length() - 1

Returns:

16-bit code unit of text at given offset

char32At

public int char32At(int offset)

Return the 32-bit code point at the given 16-bit offset into the text. This assumes the text is stored as 16-bit code units with surrogate pairs intermixed. If the offset of a leading or trailing code unit of a surrogate pair is given, return the code point of the surrogate pair.

Specified by:

char32At in interface Replaceable

Parameters:

offset - an integer between 0 and length()-1 inclusive

Returns:

32-bit code point of text at given offset

getChars

public void getChars(int srcStart,
                     int srcLimit,
                     char[] dst,
                     int dstStart)

Copies characters from this object into the destination character array. The first character to be copied is at index srcStart; the last character to be copied is at index srcLimit-1 (thus the total number of characters to be copied is srcLimit-srcStart). The characters are copied into the subarray of dst starting at index dstStart and ending at index dstStart + (srcLimit-srcStart) - 1.

Specified by:

getChars in interface Replaceable

Parameters:

srcStart - the beginning index to copy, inclusive; 0 <= start <= limit.

srcLimit - the ending index to copy, exclusive; start <= limit <= length().

dst - the destination array.

dstStart - the start offset in the destination array.

replace

public void replace(int start,
                    int limit,
                    String text)

Replace zero or more characters with new characters. Replaceable API.

Specified by:

replace in interface Replaceable

Parameters:

start - the beginning index, inclusive; 0 <= start <= limit.

limit - the ending index, exclusive; start <= limit <= length().

text - new text to replace characters start to limit - 1

replace

public void replace(int start,
                    int limit,
                    char[] chars,
                    int charsStart,
                    int charsLen)

Replace a substring of this object with the given text.

Specified by:

replace in interface Replaceable

Parameters:

start - the beginning index, inclusive; 0 <= start <= limit.

limit - the ending index, exclusive; start <= limit <= length().

chars - the text to replace characters start to limit - 1

charsStart - the beginning index into chars, inclusive; 0 <= start <= limit.

charsLen - the number of characters of chars.

copy

public void copy(int start,
                 int limit,
                 int dest)

Copy a substring of this object, retaining attribute (out-of-band) information. This method is used to duplicate or reorder substrings. The destination index must not overlap the source range.

Specified by:

copy in interface Replaceable

Parameters:

start - the beginning index, inclusive; 0 <= start <= limit.

limit - the ending index, exclusive; start <= limit <= length().

dest - the destination index. The characters from start..limit-1 will be copied to dest. Implementations of this method may assume that dest <= start || dest >= limit.

hasMetaData

public boolean hasMetaData()

Implements Replaceable

Specified by:

hasMetaData in interface Replaceable

Returns:

true if this object contains metadata