1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
// Copyright 2014 Google Inc. 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.xcode.zippingoutput;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableList;
import com.google.common.io.CharStreams;
import com.google.devtools.build.singlejar.ZipCombiner;
import com.google.devtools.build.xcode.zip.ZipInputEntry;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import javax.annotation.Nullable;
/** Utility code for working with {@link Wrapper}s. */
public class Wrappers {
private Wrappers() {
throw new UnsupportedOperationException("static-only");
}
/**
* Takes the string and canonicalizes if it is a path that exists on the file system.
* If it does not exist on the file system, returns the string passed in unchanged.
*/
public static final Function<String, String> CANONICALIZE_IF_PATH =
new Function<String, String>() {
@Override
public String apply(String path) {
if (!path.startsWith("-")) {
File file = new File(path);
if (file.exists()) {
try {
return file.getCanonicalPath();
} catch (IOException e) {
// Pass through to return raw path
}
}
}
return path;
}
};
/**
* Executes the command specified by argsArray and wrapper, writing the output directly to this
* Java process's stdout/stderr. Calling this method should be the last thing you do in
* {@code main}, because it may exit prematurely with {@link System#exit(int)}.
*/
public static void executePipingOutput(String[] argsArray, Wrapper wrapper)
throws IOException, InterruptedException {
try {
execute(argsArray, wrapper, true);
} catch (CommandFailedException e) {
handleException(e);
}
}
/**
* Runs the given wrapper using command-line arguments passed to the {@code main} method, and
* returns the stdout and stderr of the process.
*
* @throws CommandFailedException if the command did not successfully run
*/
public static OutErr executeCapturingOutput(String[] argsArray, Wrapper wrapper)
throws CommandFailedException, IOException, InterruptedException {
return execute(argsArray, wrapper, false);
}
/**
* Outputs stdout and stderr, then exits with a non-zero status code.
*/
public static void handleException(CommandFailedException e) {
e.outErr.print();
System.err.print(e.getMessage());
System.exit(1);
}
@Nullable
private static OutErr execute(String[] argsArray, Wrapper wrapper, boolean printOutput)
throws CommandFailedException, IOException, InterruptedException {
FileSystem filesystem = FileSystems.getDefault();
ArgumentsParsing argsParsing = ArgumentsParsing.parse(
filesystem, argsArray, wrapper.name(), wrapper.subtoolName());
for (String error : argsParsing.error().asSet()) {
throw new CommandFailedException(error, OutErr.empty());
}
if (!argsParsing.arguments().isPresent()) {
throw new IllegalStateException("No arguments or error present");
}
Arguments args = argsParsing.arguments().get();
Path tempDir = getTempDir(filesystem);
Path outputDir = Files.createTempDirectory(tempDir, "ZippingOutput");
Path rootedOutputDir = outputDir.resolve(args.bundleRoot());
Files.createDirectories(
wrapper.outputDirectoryMustExist() ? rootedOutputDir : rootedOutputDir.getParent());
ImmutableList<String> subCommandArguments =
ImmutableList.copyOf(wrapper.subCommand(args, rootedOutputDir.toString()));
ProcessBuilder processBuilder = new ProcessBuilder(subCommandArguments);
if (printOutput) {
processBuilder = processBuilder.inheritIO();
}
Process subProcess = processBuilder.start();
int exit = subProcess.waitFor();
OutErr outErr = new OutErr(
streamToString(subProcess.getInputStream()),
streamToString(subProcess.getErrorStream()));
if (exit != 0) {
throw new CommandFailedException("", outErr);
}
try (OutputStream out = Files.newOutputStream(Paths.get(args.outputZip()));
ZipCombiner combiner = new ZipCombiner(out)) {
ZipInputEntry.addAll(combiner, ZipInputEntry.fromDirectory(outputDir));
}
return outErr;
}
private static String streamToString(InputStream stream) throws IOException {
return CharStreams.toString(new InputStreamReader(stream, StandardCharsets.UTF_8));
}
private static Path getTempDir(FileSystem filesystem) {
String tempDir = System.getenv("TMPDIR");
if (tempDir == null) {
tempDir = "/tmp";
}
return filesystem.getPath(tempDir);
}
/** Thrown if command exception fails for some reason. */
public static class CommandFailedException extends Exception {
private OutErr outErr;
public CommandFailedException(String message, OutErr outErr) {
super(message);
this.outErr = outErr;
}
public OutErr outErr() {
return outErr;
}
}
/** Stdout and stderr of a process. */
public static class OutErr {
public final String stdout;
public final String stderr;
public OutErr(String stdout, String stderr) {
this.stdout = stdout;
this.stderr = stderr;
}
public static OutErr empty() {
return new OutErr("", "");
}
public void print() {
System.out.print(stdout);
System.err.print(stderr);
}
}
}
|
