org.wildfly.galleon.plugin.config.LineEndingsTask Maven / Gradle / Ivy
/*
* Copyright 2016-2022 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.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.StandardCopyOption;
import java.nio.file.StandardOpenOption;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.List;
import org.jboss.galleon.ProvisioningException;
import org.jboss.galleon.runtime.PackageRuntime;
import org.wildfly.galleon.plugin.WfInstallPlugin;
import org.wildfly.galleon.plugin.WildFlyPackageTask;
public class LineEndingsTask implements WildFlyPackageTask {
private final List unixLineEndFilters;
private final List windowsLineEndFilters;
private Phase phase;
public LineEndingsTask(List unixLineEndFilters, List windowsLineEndFilters, Phase phase) {
this.unixLineEndFilters = unixLineEndFilters;
this.windowsLineEndFilters = windowsLineEndFilters;
this.phase = phase;
}
@Override
public Phase getPhase() {
return phase;
}
@Override
public void execute(WfInstallPlugin plugin, PackageRuntime pkg) throws ProvisioningException {
final Path installDir = plugin.getRuntime().getStagedDir();
// If not line end filters are present no need to walk the directory
if (unixLineEndFilters.isEmpty() && windowsLineEndFilters.isEmpty()) {
return;
}
try {
Files.walkFileTree(installDir, new SimpleFileVisitor() {
@Override
public FileVisitResult visitFile(final Path file, final BasicFileAttributes attrs) {
final String relative = installDir.relativize(file).toString();
for (FileFilter filter : unixLineEndFilters) {
if (filter.matches(relative)) {
try {
changeLineEndings(file, false);
} catch (IOException e) {
throw new UncheckedIOException(String.format("Failed to convert %s to Unix line endings.", file), e);
}
}
}
for (FileFilter filter : windowsLineEndFilters) {
if (filter.matches(relative)) {
try {
changeLineEndings(file, true);
} catch (IOException e) {
throw new UncheckedIOException(String.format("Failed to convert %s to Windows line endings.", file), e);
}
}
}
return FileVisitResult.CONTINUE;
}
});
} catch (UncheckedIOException e) {
throw new ProvisioningException(e.getMessage(), e.getCause());
} catch (IOException e) {
throw new ProvisioningException(String.format("Failed to process %s for files that require line ending changes.", installDir), e);
}
}
private static void changeLineEndings(final Path file, final boolean isWindows) throws IOException {
final String eol = (isWindows ? "\r\n" : "\n");
final Path temp = Files.createTempFile(file.getFileName().toString(), ".tmp");
// Copy the original file to the temporary file, replacing it and copying the attributes. Note that the order of
// REPLACE_EXISTING and COPY_ATTRIBUTES is important.
Files.copy(file, temp, StandardCopyOption.REPLACE_EXISTING, StandardCopyOption.COPY_ATTRIBUTES);
try (
BufferedReader reader = Files.newBufferedReader(temp, StandardCharsets.UTF_8);
BufferedWriter writer = Files.newBufferedWriter(file, StandardCharsets.UTF_8, StandardOpenOption.TRUNCATE_EXISTING)
) {
// Process each line and write a eol string
String line;
while ((line = reader.readLine()) != null) {
writer.write(line);
writer.write(eol);
}
} finally {
Files.delete(temp);
}
}
}