org.apache.camel.karaf.tooling.upgrade.Utils Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.camel.karaf.tooling.upgrade;
import java.io.IOException;
import java.io.InputStream;
import java.io.UncheckedIOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.function.UnaryOperator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public final class Utils {
private static final Pattern LINE_SEPARATOR_PATTERN = Pattern.compile("\r\n|[\n\r\u2028\u2029\u0085]");
private Utils() {}
static String loadFileFromClassLoader(String path) {
try (InputStream resource = UpgradeCamel.class.getResourceAsStream(path)) {
if (resource == null) {
throw new IOException("Resource %s not found".formatted(path));
}
return new String(resource.readAllBytes(), StandardCharsets.UTF_8);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
static void replaceFileContent(Path path, UnaryOperator contentUpdater) throws IOException {
Files.writeString(path, contentUpdater.apply(Files.readString(path, StandardCharsets.UTF_8)), StandardCharsets.UTF_8);
}
static int nextLineIndex(String content, int start) {
Matcher matcher = LINE_SEPARATOR_PATTERN.matcher(content);
if (matcher.find(start)) {
return matcher.end();
}
return -1;
}
}