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/*
* Copyright 2000-2009 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.compiler.impl;
import com.intellij.util.StringBuilderSpinAllocator;
import com.intellij.util.containers.StringInterner;
import org.jetbrains.annotations.NotNull;
import java.util.ArrayList;
import java.util.List;
/**
* @author Eugene Zhuravlev
* Date: Jun 21, 2006
*/
public class InternedPath {
private final @NotNull List<String> myValue;
public InternedPath(StringInterner interner, String url, final char separator) {
myValue = convert(interner, url, separator);
}
public String toString() {
return join(myValue, '/');
}
public static List<String> convert(StringInterner interner, String value, char delim) {
final List<String> result = new ArrayList<String>();
int start = 0;
final int len = value.length();
for (int idx = 0; idx < len; idx++) {
if (value.charAt(idx) == delim) {
result.add(interner.intern(value.substring(start, idx)));
start = idx + 1;
}
}
if (start < value.length()) {
result.add(interner.intern(value.substring(start)));
}
if (len > 0 && value.charAt(len-1) == delim) { // ends with delimiter
result.add("");
}
return result;
}
public static String join(List<String> value, char separator) {
final int size = value.size();
if (size > 1) {
final StringBuilder builder = StringBuilderSpinAllocator.alloc();
try {
builder.append(value.get(0));
for (int idx = 1; idx < size; idx++) {
builder.append(separator).append(value.get(idx));
}
return builder.toString();
}
finally {
StringBuilderSpinAllocator.dispose(builder);
}
}
else if (size == 1){
return value.get(0);
}
return "";
}
}
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