org.wildfly.galleon.plugin.config.FileAppender Maven / Gradle / Ivy
/*
* Copyright 2016-2019 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* 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 org.wildfly.galleon.plugin.config;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;
import org.jboss.galleon.Errors;
import org.jboss.galleon.ProvisioningException;
import org.jboss.galleon.runtime.PackageRuntime;
import org.wildfly.galleon.plugin.WfInstallPlugin;
import org.wildfly.galleon.plugin.WildFlyPackageTask;
/**
* Task to append content to the `target` file whefre it matches the matcher pattern.
* If `allMatches` is set to false only the first match will be used.
* The lines will be added after the first line of the target file that matches the `match` configuration
* If you need to append some content to the matching line you can set it using `add-to-matching-line`.
* The lines to be added can be provided either via a file or via a list of lines.
* You can `ignore` the fact that the target file doesn't exist.
* @author Emmanuel Hugonnet
*/
public class FileAppender implements WildFlyPackageTask {
private String src;
private String target;
private String match;
private boolean ignore = true;
private boolean allMatches = true;
private final List lines = new ArrayList<>();
private String addToMatchingLine = null;
public FileAppender() {
}
public void setTarget(String target) {
this.target = target;
}
public Pattern getMatch() {
if(match == null) {
return null;
}
return Pattern.compile(match);
}
public void setMatch(String match) {
this.match = match;
}
public void addLine(String line) {
if(line == null) {
this.lines.add("");
} else {
this.lines.add(line);
}
}
public boolean isIgnore() {
return ignore;
}
public void setIgnore(boolean ignore) {
this.ignore = ignore;
}
public void setSource(String src) {
this.src = src;
}
public void setAddToMatchingLine(String addToMatchingLine) {
this.addToMatchingLine = addToMatchingLine;
}
public void setAllMatches(boolean allMatches) {
this.allMatches = allMatches;
}
@Override
public void execute(WfInstallPlugin plugin, PackageRuntime pkg) throws ProvisioningException {
if(this.target == null) {
if(this.isIgnore()) {
return;
}
throw new ProvisioningException("Target can't be null when appending content");
}
final Path targetPath = plugin.getRuntime().getStagedDir().resolve(this.target);
if (!Files.exists(targetPath)) {
if(this.isIgnore()) {
return;
}
throw new ProvisioningException(Errors.pathDoesNotExist(targetPath));
}
try {
if (this.src != null) {
final Path srcPath = plugin.getRuntime().getStagedDir().resolve(this.src);
if (!Files.exists(srcPath)) {
throw new ProvisioningException(Errors.pathDoesNotExist(srcPath));
}
this.lines.clear();
this.lines.addAll(Files.readAllLines(srcPath));
}
List fileLines = Files.readAllLines(targetPath);
List updatedLines = new ArrayList<>(lines.size() + 3);
boolean found = false;
for (String line : fileLines) {
if ((allMatches || !found) && this.getMatch() != null && this.getMatch().matcher(line).find()) {
if (addToMatchingLine != null && !addToMatchingLine.isEmpty()) {
updatedLines.add(line + addToMatchingLine);
} else {
updatedLines.add(line);
}
for (int i = 0; i < lines.size(); i++) {
updatedLines.add(lines.get(i));
}
} else {
updatedLines.add(line);
}
}
if (this.getMatch() == null) {
updatedLines.addAll(lines);
}
Files.write(targetPath, updatedLines, StandardOpenOption.WRITE);
} catch (IOException e) {
throw new UncheckedIOException(String.format("Failed to append content to file %s", targetPath), e);
}
}
}