com.ibm.icu.text
Class CanonicalIterator
public final class CanonicalIterator
This class allows one to iterate through all the strings that are canonically equivalent to a given
string. For example, here are some sample results:
Results for: {A WITH RING ABOVE}{d}{DOT ABOVE}{CEDILLA}
1: {A}{RING ABOVE}{d}{DOT ABOVE}{CEDILLA}
2: {A}{RING ABOVE}{d}{CEDILLA}{DOT ABOVE}
3: {A}{RING ABOVE}{d WITH DOT ABOVE}{CEDILLA}
4: {A}{RING ABOVE}{d WITH CEDILLA}{DOT ABOVE}
5: {A WITH RING ABOVE}{d}{DOT ABOVE}{CEDILLA}
6: {A WITH RING ABOVE}{d}{CEDILLA}{DOT ABOVE}
7: {A WITH RING ABOVE}{d WITH DOT ABOVE}{CEDILLA}
8: {A WITH RING ABOVE}{d WITH CEDILLA}{DOT ABOVE}
9: {ANGSTROM SIGN}{d}{DOT ABOVE}{CEDILLA}
10: {ANGSTROM SIGN}{d}{CEDILLA}{DOT ABOVE}
11: {ANGSTROM SIGN}{d WITH DOT ABOVE}{CEDILLA}
12: {ANGSTROM SIGN}{d WITH CEDILLA}{DOT ABOVE}
Note: the code is intended for use with small strings, and is not suitable for larger ones,
since it has not been optimized for that situation.
String | getSource() - Gets the NFD form of the current source we are iterating over.
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String | next() - Get the next canonically equivalent string.
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static void | permute(String source, boolean skipZeros, Set output) - Simple implementation of permutation.
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void | reset() - Resets the iterator so that one can start again from the beginning.
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void | setSource(String newSource) - Set a new source for this iterator.
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CanonicalIterator
public CanonicalIterator(String source)
Construct a CanonicalIterator object
source
- string to get results for
getSource
public String getSource()
Gets the NFD form of the current source we are iterating over.
- gets the source: NOTE: it is the NFD form of the source originally passed in
next
public String next()
Get the next canonically equivalent string.
Warning: The strings are not guaranteed to be in any particular order.
- the next string that is canonically equivalent. The value null is returned when
the iteration is done.
permute
public static void permute(String source,
boolean skipZeros,
Set output)
Simple implementation of permutation.
Warning: The strings are not guaranteed to be in any particular order.
source
- the string to find permutations forskipZeros
- set to true to skip characters with canonical combining class zerooutput
- the set to add the results to
reset
public void reset()
Resets the iterator so that one can start again from the beginning.
setSource
public void setSource(String newSource)
Set a new source for this iterator. Allows object reuse.
newSource
- the source string to iterate against. This allows the same iterator to be used
while changing the source string, saving object creation.
Copyright (c) 2006 IBM Corporation and others.