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// Copyright 2015 The Bazel 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.devtools.build.buildjar.genclass;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Iterator;
/** A command line parser for {@link GenClassOptions}. */
public class GenClassOptionsParser {
public static GenClassOptions parse(Iterable<String> args) {
Iterator<String> it = args.iterator();
GenClassOptions.Builder builder = GenClassOptions.builder();
while (it.hasNext()) {
String arg = it.next();
switch (arg) {
case "--manifest_proto":
builder.setManifest(readPath(it));
break;
case "--class_jar":
builder.setClassJar(readPath(it));
break;
case "--output_jar":
builder.setOutputJar(readPath(it));
break;
case "--temp_dir":
builder.setTempDir(readPath(it));
break;
default:
throw new IllegalArgumentException(
String.format("Unexpected argument: '%s' in %s", arg, args));
}
}
return builder.build();
}
private static Path readPath(Iterator<String> it) {
if (!it.hasNext()) {
throw new IllegalArgumentException(String.format("Expected more arguments"));
}
return Paths.get(it.next());
}
}
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