| // Copyright 2023 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.lib.analysis.actions; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.actions.CommandLine; |
| import com.google.devtools.build.lib.vfs.PathFragment; |
| |
| /** |
| * Memory-efficient {@link CommandLine} for a shell command. |
| * |
| * <p>Equivalent to invoking {@link #shExecutable} (e.g. {@code /bin/bash}) followed by {@code -c} |
| * and {@link #command}. Supports optionally padding the command line with an empty argument, which |
| * can be useful to ensure that any subsequent arguments get assigned to {@code $1} etc. |
| */ |
| final class ShellCommand extends CommandLine { |
| |
| private final PathFragment shExecutable; |
| private final String command; |
| private final boolean pad; |
| |
| ShellCommand(PathFragment shExecutable, String command, boolean pad) { |
| this.shExecutable = checkNotNull(shExecutable); |
| this.command = checkNotNull(command); |
| this.pad = pad; |
| } |
| |
| @Override |
| public ImmutableList<String> arguments() { |
| return pad |
| ? ImmutableList.of(shExecutable.expandToCommandLine(), "-c", command, "") |
| : ImmutableList.of(shExecutable.expandToCommandLine(), "-c", command); |
| } |
| } |