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package se.leap.bitmaskclient.base.utils;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
/**
* Created by cyberta on 18.03.18.
*/
public class InputStreamHelper {
//allows us to mock FileInputStream
public static InputStream getInputStreamFrom(String filePath) throws FileNotFoundException {
return new FileInputStream(filePath);
}
public static String loadInputStreamAsString(InputStream is) {
java.util.Scanner s = new java.util.Scanner(is).useDelimiter("\\A");
return s.hasNext() ? s.next() : "";
}
public static String extractKeyFromInputStream(InputStream inputStream, String key) {
String value = "";
JSONObject fileContents = inputStreamToJson(inputStream);
if (fileContents != null)
value = fileContents.optString(key);
return value;
}
public static JSONObject inputStreamToJson(InputStream inputStream) {
JSONObject json = null;
try {
byte[] bytes = new byte[inputStream.available()];
if (inputStream.read(bytes) > 0)
json = new JSONObject(new String(bytes));
inputStream.reset();
} catch (IOException | JSONException e) {
e.printStackTrace();
}
return json;
}
}
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