com.liferay.source.formatter.checks.DockerfileEmptyLinesCheck Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.source.formatter.checks;
import com.liferay.petra.string.StringBundler;
import com.liferay.petra.string.StringPool;
import com.liferay.portal.kernel.io.unsync.UnsyncBufferedReader;
import com.liferay.portal.kernel.io.unsync.UnsyncStringReader;
import com.liferay.portal.kernel.util.Validator;
import com.liferay.source.formatter.checks.util.DockerfileSourceUtil;
import java.io.IOException;
/**
* @author Peter Shin
*/
public class DockerfileEmptyLinesCheck extends BaseFileCheck {
@Override
protected String doProcess(
String fileName, String absolutePath, String content)
throws IOException {
StringBundler sb = new StringBundler();
try (UnsyncBufferedReader unsyncBufferedReader =
new UnsyncBufferedReader(new UnsyncStringReader(content))) {
String instruction = StringPool.BLANK;
String line = StringPool.BLANK;
String previousInstruction = StringPool.BLANK;
String previousLine = StringPool.BLANK;
while ((line = unsyncBufferedReader.readLine()) != null) {
if (Validator.isNull(line)) {
continue;
}
instruction = DockerfileSourceUtil.getInstruction(
line, previousLine);
if (DockerfileSourceUtil.isNewInstruction(
instruction, previousInstruction, previousLine)) {
sb.append("\n");
}
sb.append(line);
sb.append("\n");
if (Validator.isNotNull(instruction)) {
previousInstruction = instruction;
}
previousLine = line;
}
}
if (sb.index() > 0) {
sb.setIndex(sb.index() - 1);
}
return sb.toString();
}
}