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package se.leap.bitmaskclient.base.utils;
import android.content.Context;
import androidx.annotation.VisibleForTesting;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import de.blinkt.openvpn.core.NativeUtils;
/**
* Created by cyberta on 18.03.18.
*/
public class FileHelper {
public interface FileHelperInterface {
File createFile(File dir, String fileName);
void persistFile(File file, String content) throws IOException;
}
public static class DefaultFileHelper implements FileHelperInterface {
@Override
public File createFile(File dir, String fileName) {
return new File(dir, fileName);
}
@Override
public void persistFile(File file, String content) throws IOException {
FileWriter writer = new FileWriter(file);
writer.write(content);
writer.close();
}
}
private static FileHelperInterface instance = new DefaultFileHelper();
@VisibleForTesting
public FileHelper(FileHelperInterface helperInterface) {
if (!NativeUtils.isUnitTest()) {
throw new IllegalStateException("FileHelper injected with FileHelperInterface outside of an unit test");
}
instance = helperInterface;
}
public static File createFile(File dir, String fileName) {
return instance.createFile(dir, fileName);
}
public static void persistFile(File file, String content) throws IOException {
instance.persistFile(file, content);
}
public static String readPublicKey(Context context) {
{
InputStream inputStream;
try {
inputStream = context.getAssets().open("public.pgp");
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder sb = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
sb.append(line).append("\n");
}
reader.close();
return sb.toString();
} catch (IOException errabi) {
return null;
}
}
}
}
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