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PlantUML is a component that allows to quickly write diagrams from text.
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
* |
* | PlantUML : a free UML diagram generator
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* (C) Copyright 2009-2024, Arnaud Roques
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package net.sourceforge.plantuml.tim;
import java.util.HashMap;
import java.util.Map;
public class TrieImpl implements Trie {
private final Map brothers = new HashMap();
public void add(String s) {
if (s.indexOf('\0') != -1) {
throw new IllegalArgumentException();
}
addInternal(this, s + "\0");
}
private static void addInternal(TrieImpl current, String s) {
if (s.length() == 0) {
throw new UnsupportedOperationException();
}
while (s.length() > 0) {
final Character added = s.charAt(0);
final TrieImpl child = current.getOrCreate(added);
s = s.substring(1);
current = child;
}
}
public boolean remove(String s) {
return removeInternal(this, s + "\0");
}
private static boolean removeInternal(TrieImpl current, String s) {
if (s.length() <= 1) {
throw new UnsupportedOperationException();
}
while (s.length() > 0) {
final Character first = s.charAt(0);
final TrieImpl child = current.brothers.get(first);
if (child == null) {
return false;
}
s = s.substring(1);
if (s.length() == 1) {
assert s.charAt(0) == '\0';
return child.brothers.remove('\0') != null;
}
current = child;
}
throw new IllegalStateException();
}
private TrieImpl getOrCreate(Character added) {
TrieImpl result = brothers.get(added);
if (result == null) {
result = new TrieImpl();
brothers.put(added, result);
}
return result;
}
public String getLonguestMatchStartingIn(String s) {
return getLonguestMatchStartingIn(this, s);
}
private static String getLonguestMatchStartingIn(TrieImpl current, String s) {
final StringBuilder result = new StringBuilder();
while (current != null) {
if (s.length() == 0) {
if (current.brothers.containsKey('\0')) {
return result.toString();
} else {
return "";
}
}
final TrieImpl child = current.brothers.get(s.charAt(0));
if (child == null || child.brothers.size() == 0) {
if (current.brothers.containsKey('\0')) {
return result.toString();
} else {
return "";
}
}
result.append(s.charAt(0));
current = child;
s = s.substring(1);
}
return "";
}
}