mv com/google/domain/registry google/registry

This change renames directories in preparation for the great package
rename. The repository is now in a broken state because the code
itself hasn't been updated. However this should ensure that git
correctly preserves history for each file.

java/google/registry/tools/params/PathParameter.java

@@ -0,0 +1,101 @@
+// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
+//
+// 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 com.google.domain.registry.tools.params;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import com.beust.jcommander.ParameterException;
+
+import java.net.URI;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.regex.Pattern;
+
+/** Filesystem path CLI parameter converter/validator. */
+public class PathParameter extends ParameterConverterValidator<Path> {
+
+  public PathParameter() {
+    super("not a valid path");
+  }
+
+  /** Heuristic for determining if a path value appears to be a {@link URI}. */
+  private static final Pattern URI_PATTERN = Pattern.compile("[a-z][-+.a-z]+:[^:]");
+
+  @Override
+  public final Path convert(String value) {
+    checkArgument(!checkNotNull(value).isEmpty());
+    if (URI_PATTERN.matcher(value).lookingAt()) {
+      return Paths.get(URI.create(value)).normalize();
+    }
+    return Paths.get(value).normalize();
+  }
+
+  /** {@linkplain PathParameter} when you want an output file parameter. */
+  public static final class OutputFile extends PathParameter {
+    @Override
+    public void validate(String name, String value) throws ParameterException {
+      super.validate(name, value);
+      Path file = convert(value).toAbsolutePath();
+      if (Files.exists(file)) {
+        if (Files.isDirectory(file)) {
+          throw new ParameterException(String.format("%s is a directory: %s", name, file));
+        }
+        if (!Files.isWritable(file)) {
+          throw new ParameterException(String.format("%s not writable: %s", name, file));
+        }
+      } else {
+        Path dir = file.getParent();
+        if (!Files.exists(dir)) {
+          throw new ParameterException(String.format("%s parent dir doesn't exist: %s", name, dir));
+        }
+        if (!Files.isDirectory(dir)) {
+          throw new ParameterException(String.format("%s parent is non-directory: %s", name, dir));
+        }
+      }
+    }
+  }
+
+  /** {@linkplain PathParameter} when you want an output directory parameter. */
+  public static final class OutputDirectory extends PathParameter {
+    @Override
+    public void validate(String name, String value) throws ParameterException {
+      super.validate(name, value);
+      Path file = convert(value).toAbsolutePath();
+      if (!Files.isDirectory(file)) {
+        throw new ParameterException(String.format("%s not a directory: %s", name, file));
+      }
+    }
+  }
+
+  /** {@linkplain PathParameter} when you want an input file that must exist. */
+  public static final class InputFile extends PathParameter {
+    @Override
+    public void validate(String name, String value) throws ParameterException {
+      super.validate(name, value);
+      Path file = convert(value).toAbsolutePath();
+      if (!Files.exists(file)) {
+        throw new ParameterException(String.format("%s not found: %s", name, file));
+      }
+      if (!Files.isReadable(file)) {
+        throw new ParameterException(String.format("%s not readable: %s", name, file));
+      }
+      if (Files.isDirectory(file)) {
+        throw new ParameterException(String.format("%s is a directory: %s", name, file));
+      }
+    }
+  }
+}