1 files changed, 51 insertions, 0 deletions
diff --git a/app/src/main/java/de/danoeh/antennapod/util/URLChecker.java b/app/src/main/java/de/danoeh/antennapod/util/URLChecker.java
new file mode 100644
index 000000000..9997daaf7
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/util/URLChecker.java
@@ -0,0 +1,51 @@
+package de.danoeh.antennapod.util;
+
+import android.util.Log;
+
+import org.apache.commons.lang3.StringUtils;
+
+import de.danoeh.antennapod.BuildConfig;
+
+/**
+ * Provides methods for checking and editing a URL.
+ */
+public final class URLChecker {
+
+    /**
+     * Class shall not be instantiated.
+     */
+    private URLChecker() {
+    }
+
+    /**
+     * Logging tag.
+     */
+    private static final String TAG = "URLChecker";
+
+    /**
+     * Checks if URL is valid and modifies it if necessary.
+     *
+     * @param url The url which is going to be prepared
+     * @return The prepared url
+     */
+    public static String prepareURL(String url) {
+        StringBuilder builder = new StringBuilder();
+        url = StringUtils.trim(url);
+        if (url.startsWith("feed://")) {
+            if (BuildConfig.DEBUG) Log.d(TAG, "Replacing feed:// with http://");
+            url = url.replaceFirst("feed://", "http://");
+        } else if (url.startsWith("pcast://")) {
+            if (BuildConfig.DEBUG) Log.d(TAG, "Replacing pcast:// with http://");
+            url = url.replaceFirst("pcast://", "http://");
+        } else if (url.startsWith("itpc")) {
+            if (BuildConfig.DEBUG) Log.d(TAG, "Replacing itpc:// with http://");
+            url = url.replaceFirst("itpc://", "http://");
+        } else if (!(url.startsWith("http://") || url.startsWith("https://"))) {
+            if (BuildConfig.DEBUG) Log.d(TAG, "Adding http:// at the beginning of the URL");
+            builder.append("http://");
+        }
+        builder.append(url);
+
+        return builder.toString();
+    }
+}