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package com.sun.enterprise.tools.classmodel;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map.Entry;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.jvnet.hk2.component.classmodel.ClassPath;
import com.sun.enterprise.tools.InhabitantsDescriptor;
/**
* Provides ability to filter an inhabitants file to only include what
* is designated by a specified classpath.
*
* @author Jeff Trent
* @since 3.1
*/
public class InhabitantsFilter extends Constants {
private static Logger logger = Logger.getLogger(InhabitantsFilter.class.getName());
protected InhabitantsFilter() {}
/**
* Requires {@link Constants#PARAM_INHABITANT_SOURCE_FILE}, {@link Constants#PARAM_INHABITANT_TARGET_FILE},
* {@link Constants#PARAM_INHABITANTS_SOURCE_FILES}, and {@link Constants#PARAM_INHABITANTS_SORTED}
* to be passed.
*
* @param args not used
* @throws Exception
*/
public static void main(String[] args) throws Exception {
File sourceInhabitantFile = InhabitantsGenerator.getInhabitantFile(PARAM_INHABITANT_SOURCE_FILE, false);
if (!sourceInhabitantFile.exists()) {
logger.log(Level.INFO, "Nothing to do.");
return;
}
File targetInhabitantFile = InhabitantsGenerator.getInhabitantFile(PARAM_INHABITANT_TARGET_FILE, false);
ClassPath targetClassPath = InhabitantsGenerator.getScopedInhabitantCodeSources();
CodeSourceFilter filter = new CodeSourceFilter(targetClassPath);
logger.log(Level.FINE, "filter is {0}", filter);
InhabitantsDescriptor inDescriptor = new InhabitantsDescriptor();
logger.log(Level.FINE, "source file is {0}", sourceInhabitantFile);
inDescriptor.load(sourceInhabitantFile);
InhabitantsDescriptor outDescriptor = new InhabitantsDescriptor();
outDescriptor.enableDateOutput(false);
boolean sorted = Boolean.getBoolean(PARAM_INHABITANTS_SORTED);
process(inDescriptor, outDescriptor, filter);
writeInhabitantsFile(targetInhabitantFile, outDescriptor, sorted);
}
/**
* Builds the outDescriptor based on filtered inDescriptor contents.
*
* @param inDescriptor the source input descriptor
* @param outDescriptor the destination descriptor
* @param filter the filter
*/
public static void process(InhabitantsDescriptor inDescriptor,
InhabitantsDescriptor outDescriptor,
CodeSourceFilter filter) {
for (Entry<String, String> entry : inDescriptor.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
String clazz = classOf(value);
if (null == filter || filter.matches(clazz)) {
outDescriptor.put(key, value);
}
}
}
/**
* Writes the inhabitants file to disk.
*
* @param targetInhabitantFile
* @param outDescriptor
* @param sorted
*/
public static void writeInhabitantsFile(
File targetInhabitantFile,
InhabitantsDescriptor outDescriptor,
boolean sorted) throws FileNotFoundException, IOException {
if (outDescriptor.isEmpty()) {
targetInhabitantFile.delete();
} else {
logger.log(Level.INFO, "writing file {0}", targetInhabitantFile);
if (!sorted) {
outDescriptor.write(targetInhabitantFile);
} else {
File parent = targetInhabitantFile.getParentFile();
if (null != parent) {
parent.mkdirs();
}
ByteArrayOutputStream out = new ByteArrayOutputStream();
PrintWriter w = new PrintWriter(out);
outDescriptor.write(w);
w.close();
String sorterdInhabitants = Utilities.sortInhabitantsDescriptor(out.toString(), sorted);
FileOutputStream fos = new FileOutputStream(targetInhabitantFile);
fos.write(sorterdInhabitants.getBytes());
fos.close();
}
}
}
static String classOf(String value) {
return Utilities.split(value).getOne("class");
}
}