Initial commit

1 files changed, 75 insertions, 0 deletions

diff --git a/src/main/java/de/romjaki/dsbclient/UnUtil.java b/src/main/java/de/romjaki/dsbclient/UnUtil.java
new file mode 100644
index 0000000..2c3af02
--- /dev/null
+++ b/src/main/java/de/romjaki/dsbclient/UnUtil.java
@@ -0,0 +1,75 @@
+package de.romjaki.dsbclient;
+
+
+import org.apache.http.NameValuePair;
+import org.apache.http.client.entity.UrlEncodedFormEntity;
+import org.apache.http.message.BasicNameValuePair;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.UnsupportedEncodingException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.*;
+
+import static java.util.Calendar.*;
+
+public class UnUtil {
+
+    private UnUtil() {
+        UnUtil.singleton(UnUtil.class);
+    }
+
+    public static Calendar calendarByDate(Date date, Locale germany) {
+        Calendar calendar = Calendar.getInstance(Locale.GERMANY);
+        calendar.setTime(date);
+        return calendar;
+    }
+
+    public static Calendar sanitizeDate(Calendar temp) {
+        Calendar calendar = Calendar.getInstance(temp.getTimeZone());
+
+        calendar.set(
+                temp.get(YEAR),
+                temp.get(MONTH),
+                temp.get(DAY_OF_MONTH),
+                0, 0, 0);
+        return calendar;
+    }
+
+    public static void singleton(Class<UnUtil> utilClass) throws IllegalStateException {
+        throw new IllegalStateException("No " + utilClass.getCanonicalName() + " class instances for you :P");
+    }
+
+    public static String httpGet(String urlString, Map<String, List<String>> headers) throws IOException {
+        return performGeneralHttpRequest("GET", urlString, headers);
+    }
+
+    public static String performGeneralHttpRequest(String method, String urlString, Map<String, List<String>> headers) throws IOException {
+        URL url = new URL(urlString);
+        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+        conn.setRequestMethod(method);
+        conn.getRequestProperties().putAll(headers);
+
+        conn.setDoInput(true);
+        conn.setDoOutput(true);
+        conn.setUseCaches(false);
+
+        InputStream stream = conn.getInputStream();
+        return readFully(stream);
+    }
+
+    public static UrlEncodedFormEntity createFormEntity(Map<String, String> params) {
+        List<NameValuePair> nameValuePairs = new ArrayList<>();
+        params.forEach((name, val) -> nameValuePairs.add(new BasicNameValuePair(name, val)));
+        try {
+            return new UrlEncodedFormEntity(nameValuePairs, "UTF-8");
+        } catch (UnsupportedEncodingException e) {
+            return null;
+        }
+    }
+
+    public static String readFully(InputStream stream) {
+        return new Scanner(stream).useDelimiter("\\A").next();
+    }
+}