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https://github.com/google/nomulus.git
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c458c05801
The dark lord Gosling designed the Java package naming system so that ownership flows from the DNS system. Since we own the domain name registry.google, it seems only appropriate that we should use google.registry as our package name.
101 lines
3.7 KiB
Java
101 lines
3.7 KiB
Java
// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.tools.params;
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import static com.google.common.base.Preconditions.checkArgument;
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import static com.google.common.base.Preconditions.checkNotNull;
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import com.beust.jcommander.ParameterException;
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import java.net.URI;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.regex.Pattern;
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/** Filesystem path CLI parameter converter/validator. */
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public class PathParameter extends ParameterConverterValidator<Path> {
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public PathParameter() {
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super("not a valid path");
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}
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/** Heuristic for determining if a path value appears to be a {@link URI}. */
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private static final Pattern URI_PATTERN = Pattern.compile("[a-z][-+.a-z]+:[^:]");
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@Override
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public final Path convert(String value) {
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checkArgument(!checkNotNull(value).isEmpty());
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if (URI_PATTERN.matcher(value).lookingAt()) {
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return Paths.get(URI.create(value)).normalize();
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}
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return Paths.get(value).normalize();
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}
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/** {@linkplain PathParameter} when you want an output file parameter. */
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public static final class OutputFile extends PathParameter {
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@Override
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public void validate(String name, String value) throws ParameterException {
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super.validate(name, value);
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Path file = convert(value).toAbsolutePath();
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if (Files.exists(file)) {
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if (Files.isDirectory(file)) {
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throw new ParameterException(String.format("%s is a directory: %s", name, file));
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}
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if (!Files.isWritable(file)) {
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throw new ParameterException(String.format("%s not writable: %s", name, file));
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}
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} else {
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Path dir = file.getParent();
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if (!Files.exists(dir)) {
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throw new ParameterException(String.format("%s parent dir doesn't exist: %s", name, dir));
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}
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if (!Files.isDirectory(dir)) {
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throw new ParameterException(String.format("%s parent is non-directory: %s", name, dir));
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}
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}
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}
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}
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/** {@linkplain PathParameter} when you want an output directory parameter. */
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public static final class OutputDirectory extends PathParameter {
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@Override
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public void validate(String name, String value) throws ParameterException {
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super.validate(name, value);
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Path file = convert(value).toAbsolutePath();
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if (!Files.isDirectory(file)) {
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throw new ParameterException(String.format("%s not a directory: %s", name, file));
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}
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}
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}
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/** {@linkplain PathParameter} when you want an input file that must exist. */
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public static final class InputFile extends PathParameter {
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@Override
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public void validate(String name, String value) throws ParameterException {
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super.validate(name, value);
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Path file = convert(value).toAbsolutePath();
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if (!Files.exists(file)) {
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throw new ParameterException(String.format("%s not found: %s", name, file));
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}
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if (!Files.isReadable(file)) {
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throw new ParameterException(String.format("%s not readable: %s", name, file));
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}
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if (Files.isDirectory(file)) {
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throw new ParameterException(String.format("%s is a directory: %s", name, file));
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}
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}
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}
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}
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