lombok.core.PublicApiCreatorApp Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of lombok Show documentation
Show all versions of lombok Show documentation
Spice up your java: Automatic Resource Management, automatic generation of getters, setters, equals, hashCode and toString, and more!
/*
* Copyright (C) 2012 The Project Lombok Authors.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok.core;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.jar.JarOutputStream;
import java.util.zip.ZipEntry;
import lombok.Lombok;
import lombok.patcher.ClassRootFinder;
import org.mangosdk.spi.ProviderFor;
@ProviderFor(LombokApp.class)
public class PublicApiCreatorApp extends LombokApp {
@Override public String getAppName() {
return "publicApi";
}
@Override public String getAppDescription() {
return "Creates a small lombok-api.jar with the annotations and other public API\n" +
"classes of all lombok features. This is primarily useful to include in your\n" +
"android projects.";
}
@Override public int runApp(List rawArgs) throws Exception {
String loc = ".";
switch (rawArgs.size()) {
case 0: break;
case 1: loc = rawArgs.get(0); break;
default:
System.err.println("Supply 1 path to specify the directory where lombok-api.jar will be created. No path means the current directory is used.");
return 1;
}
File out = new File(loc, "lombok-api.jar");
int errCode = 0;
try {
errCode = writeApiJar(out);
} catch (Exception e) {
System.err.println("ERROR: Creating " + canonical(out) + " failed: ");
e.printStackTrace();
return 1;
}
return errCode;
}
/**
* Returns a File object pointing to our own jar file. Will obviously fail if the installer was started via
* a jar that wasn't accessed via the file-system, or if its started via e.g. unpacking the jar.
*/
private static File findOurJar() {
return new File(ClassRootFinder.findClassRootOfClass(PublicApiCreatorApp.class));
}
private int writeApiJar(File outFile) throws Exception {
File selfRaw = findOurJar();
if (selfRaw == null) {
System.err.println("The publicApi option only works if lombok is a jar.");
return 2;
}
List toCopy = new ArrayList();
JarFile self = new JarFile(selfRaw);
try {
Enumeration entries = self.entries();
while (entries.hasMoreElements()) {
JarEntry entry = entries.nextElement();
String name = entry.getName();
if (!name.startsWith("lombok/")) continue;
if (name.endsWith("/package-info.class")) continue;
if (!name.endsWith(".class")) continue;
String subName = name.substring(7, name.length() - 6);
int firstSlash = subName.indexOf('/');
if (firstSlash == -1) {
// direct member of the lombok package.
if (!subName.startsWith("ConfigurationKeys")) toCopy.add(name);
continue;
}
String topPkg = subName.substring(0, firstSlash);
if ("extern".equals(topPkg) || "experimental".equals(topPkg)) {
toCopy.add(name);
}
}
} finally {
self.close();
}
if (toCopy.isEmpty()) {
System.out.println("Not generating lombok-api.jar: No lombok api classes required!");
return 1;
}
OutputStream out = new FileOutputStream(outFile);
boolean success = false;
try {
JarOutputStream jar = new JarOutputStream(out);
for (String resourceName : toCopy) {
InputStream in = Lombok.class.getResourceAsStream("/" + resourceName);
try {
if (in == null) {
throw new Fail(String.format("api class %s cannot be found", resourceName));
}
writeIntoJar(jar, resourceName, in);
} finally {
if (in != null) in.close();
}
}
jar.close();
out.close();
System.out.println("Successfully created: " + canonical(outFile));
return 0;
} catch (Throwable t) {
try { out.close();} catch (Throwable ignore) {}
if (!success) outFile.delete();
if (t instanceof Fail) {
System.err.println(t.getMessage());
return 1;
} else if (t instanceof Exception) {
throw (Exception)t;
} else if (t instanceof Error) {
throw (Error)t;
} else {
throw new Exception(t);
}
}
}
private void writeIntoJar(JarOutputStream jar, String resourceName, InputStream in) throws IOException {
jar.putNextEntry(new ZipEntry(resourceName));
byte[] b = new byte[65536];
while (true) {
int r = in.read(b);
if (r == -1) break;
jar.write(b, 0, r);
}
jar.closeEntry();
in.close();
}
private static class Fail extends Exception {
Fail(String message) {
super(message);
}
}
private static String canonical(File out) {
try {
return out.getCanonicalPath();
} catch (Exception e) {
return out.getAbsolutePath();
}
}
}