| /* |
| * Copyright 2000-2014 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.util.text; |
| |
| import com.intellij.openapi.util.Condition; |
| import com.intellij.util.Function; |
| import com.intellij.util.containers.HashSet; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.Collection; |
| import java.util.Set; |
| |
| /** |
| * @author peter |
| */ |
| public class UniqueNameGenerator implements Condition<String> { |
| private final Set<String> myExistingNames = new HashSet<String>(); |
| |
| public <T> UniqueNameGenerator(@NotNull Collection<T> elements, @Nullable Function<T, String> namer) { |
| for (final T t : elements) { |
| addExistingName(namer != null ? namer.fun(t) : t.toString()); |
| } |
| } |
| |
| public UniqueNameGenerator() { |
| } |
| |
| @Override |
| public final boolean value(final String candidate) { |
| return !myExistingNames.contains(candidate); |
| } |
| |
| public final boolean isUnique(final String name, String prefix, String suffix) { |
| return value(prefix + name + suffix); |
| } |
| |
| @NotNull |
| public static String generateUniqueName(final String defaultName, final Collection<String> existingNames) { |
| return generateUniqueName(defaultName, "", "", existingNames); |
| } |
| |
| @NotNull |
| public static String generateUniqueName(final String defaultName, final String prefix, final String suffix, final Collection<String> existingNames) { |
| return generateUniqueName(defaultName, prefix, suffix, new Condition<String>() { |
| @Override |
| public boolean value(final String s) { |
| return !existingNames.contains(s); |
| } |
| }); |
| } |
| |
| @NotNull |
| public static String generateUniqueName(final String defaultName, final Condition<String> validator) { |
| return generateUniqueName(defaultName, "", "", validator); |
| } |
| |
| @NotNull |
| public static String generateUniqueName(final String defaultName, final String prefix, final String suffix, final Condition<String> validator) { |
| return generateUniqueName(defaultName, prefix, suffix, "", "", validator); |
| } |
| |
| @NotNull |
| public static String generateUniqueName(final String defaultName, final String prefix, final String suffix, |
| final String beforeNumber, final String afterNumber, final Condition<String> validator) { |
| final String defaultFullName = prefix + defaultName + suffix; |
| if (validator.value(defaultFullName)) { |
| return defaultFullName; |
| } |
| |
| for (int i = 2; ; i++) { |
| final String fullName = prefix + defaultName + beforeNumber + i + afterNumber + suffix; |
| if (validator.value(fullName)) { |
| return fullName; |
| } |
| } |
| } |
| |
| @NotNull |
| public String generateUniqueName(final String defaultName, final String prefix, final String suffix) { |
| return generateUniqueName(defaultName, prefix, suffix, "", ""); |
| } |
| |
| @NotNull |
| public String generateUniqueName(final String defaultName, final String prefix, final String suffix, final String beforeNumber, final String afterNumber) { |
| final String result = generateUniqueName(defaultName, prefix, suffix, beforeNumber, afterNumber, this); |
| addExistingName(result); |
| return result; |
| } |
| |
| public void addExistingName(String result) { |
| myExistingNames.add(result); |
| } |
| |
| public String generateUniqueName(final String defaultName) { |
| return generateUniqueName(defaultName, "", ""); |
| } |
| |
| } |