| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.List; |
| |
| /** |
| * An out of process executable. |
| */ |
| class Command { |
| |
| private final List<String> args; |
| private final boolean permitNonZeroExitStatus; |
| |
| Command(String... args) { |
| this(Arrays.asList(args)); |
| } |
| |
| Command(List<String> args) { |
| this.args = new ArrayList<String>(args); |
| this.permitNonZeroExitStatus = false; |
| } |
| |
| private Command(Builder builder) { |
| this.args = new ArrayList<String>(builder.args); |
| this.permitNonZeroExitStatus = builder.permitNonZeroExitStatus; |
| } |
| |
| static class Builder { |
| private final List<String> args = new ArrayList<String>(); |
| private boolean permitNonZeroExitStatus = false; |
| |
| public Builder args(String... args) { |
| return args(Arrays.asList(args)); |
| } |
| |
| public Builder args(Collection<String> args) { |
| this.args.addAll(args); |
| return this; |
| } |
| |
| public Builder permitNonZeroExitStatus() { |
| permitNonZeroExitStatus = true; |
| return this; |
| } |
| |
| public Command build() { |
| return new Command(this); |
| } |
| |
| public List<String> execute() { |
| return build().execute(); |
| } |
| } |
| |
| public List<String> execute() { |
| try { |
| Process process = new ProcessBuilder() |
| .command(args) |
| .redirectErrorStream(true) |
| .start(); |
| |
| BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream())); |
| List<String> outputLines = new ArrayList<String>(); |
| String outputLine; |
| while ((outputLine = in.readLine()) != null) { |
| outputLines.add(outputLine); |
| } |
| |
| if (process.waitFor() != 0 && !permitNonZeroExitStatus) { |
| StringBuilder message = new StringBuilder(); |
| for (String line : outputLines) { |
| message.append("\n").append(line); |
| } |
| throw new RuntimeException("Process failed: " + args + message); |
| } |
| |
| return outputLines; |
| } catch (IOException e) { |
| throw new RuntimeException("Process failed: " + args, e); |
| } catch (InterruptedException e) { |
| throw new RuntimeException("Process failed: " + args, e); |
| } |
| } |
| |
| } |