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/*
* Copyright (C) 2010 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.bytecode;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import lombok.core.DiagnosticsReceiver;
import lombok.core.LombokApp;
import lombok.core.PostCompiler;
import org.mangosdk.spi.ProviderFor;
import com.zwitserloot.cmdreader.CmdReader;
import com.zwitserloot.cmdreader.Description;
import com.zwitserloot.cmdreader.InvalidCommandLineException;
import com.zwitserloot.cmdreader.Mandatory;
import com.zwitserloot.cmdreader.Sequential;
import com.zwitserloot.cmdreader.Shorthand;
@ProviderFor(LombokApp.class)
public class PostCompilerApp implements LombokApp {
@Override public List<String> getAppAliases() {
return Arrays.asList("post", "postcompile");
}
@Override public String getAppDescription() {
return "Runs registered post compiler handlers to against existing class files, modifying them in the process.";
}
@Override public String getAppName() {
return "post-compile";
}
public static class CmdArgs {
@Sequential
@Mandatory
@Description("paths to class files to be converted. If a directory is named, all files (recursively) in that directory will be converted.")
private List<String> classFiles = new ArrayList<String>();
@Shorthand("v")
@Description("Prints lots of status information as the post compiler runs")
boolean verbose = false;
@Shorthand({"h", "?"})
@Description("Shows this help text")
boolean help = false;
}
@Override public int runApp(List<String> raw) throws Exception {
CmdReader<CmdArgs> reader = CmdReader.of(CmdArgs.class);
CmdArgs args;
try {
args = reader.make(raw.toArray(new String[0]));
if (args.help) {
System.out.println(reader.generateCommandLineHelp("java -jar lombok.jar post-compile"));
return 0;
}
} catch (InvalidCommandLineException e) {
System.err.println(e.getMessage());
System.err.println(reader.generateCommandLineHelp("java -jar lombok.jar post-compile"));
return 1;
}
List<File> filesToProcess = new ArrayList<File>();
for (String f : args.classFiles) addFiles(filesToProcess, f);
int filesVisited = 0, filesTouched = 0;
for (File file : filesToProcess) {
if (!file.exists() || !file.isFile()) {
System.out.printf("Cannot find file '%s'\n", file);
continue;
}
filesVisited++;
if (args.verbose) System.out.println("Processing " + file.getAbsolutePath());
byte[] original = readFile(file);
byte[] clone = original.clone();
byte[] transformed = PostCompiler.applyTransformations(clone, file.toString(), DiagnosticsReceiver.CONSOLE);
if (clone != transformed && !Arrays.equals(clone, transformed)) {
filesTouched++;
if (args.verbose) System.out.println("Rewriting " + file.getAbsolutePath());
writeFile(file, transformed);
}
}
if (args.verbose) {
System.out.printf("Total files visited: %d total files changed: %d\n", filesVisited, filesTouched);
}
return filesVisited == 0 ? 1 : 0;
}
private void addFiles(List<File> filesToProcess, String f) {
File file = new File(f);
if (file.isDirectory()) {
addRecursively(filesToProcess, file);
} else {
filesToProcess.add(file);
}
}
private void addRecursively(List<File> filesToProcess, File file) {
for (File f : file.listFiles()) {
if (f.isDirectory()) addRecursively(filesToProcess, f);
else if (f.getName().endsWith(".class")) filesToProcess.add(f);
}
}
static byte[] readFile(File file) throws IOException {
byte[] buffer = new byte[1024];
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
FileInputStream fileInputStream = new FileInputStream(file);
while (true) {
int read = fileInputStream.read(buffer);
if (read == -1) break;
bytes.write(buffer, 0, read);
}
fileInputStream.close();
return bytes.toByteArray();
}
static void writeFile(File file, byte[] transformed) throws IOException {
FileOutputStream out = new FileOutputStream(file);
out.write(transformed);
out.close();
}
}
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