/
FileScanner.java
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/
FileScanner.java
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package de.jowisoftware.myDI2.scanner;
import java.io.File;
import java.util.List;
import de.jowisoftware.myDI2.annotations.Resource;
public class FileScanner {
private final File rootFile;
private final String[] packages;
public FileScanner(final File rootFile, final String[] packages) {
this.rootFile = rootFile;
this.packages = packages;
}
public void scan(final List<Class<?>> classes) {
for (final String packageName : packages) {
final File packageDir = new File(rootFile, packageName.replace('.',
File.separatorChar));
if (packageDir.exists()) {
recursiveScanDir(packageDir, packageName, classes);
}
}
}
private void recursiveScanDir(final File packageDir,
final String packageName, final List<Class<?>> classes) {
for (final File file : packageDir.listFiles()) {
final String filename = file.getName();
if (file.isDirectory()) {
recursiveScanDir(file, packageName + "." + filename, classes);
} else {
if (file.isFile() && filename.endsWith(".class")) {
final String fqcn = packageName + "."
+ filename.substring(0, filename.length() - 6);
analyzeClass(classes, fqcn);
}
}
}
}
private void analyzeClass(final List<Class<?>> classes, final String fqcn) {
try {
final Class<?> clazz = Class.forName(fqcn);
if (clazz.getAnnotation(Resource.class) != null) {
classes.add(clazz);
}
} catch (final ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
}