Created FileNameGenerator class

2 files changed, 36 insertions, 21 deletions

diff --git a/src/de/danoeh/antennapod/util/FileNameGenerator.java b/src/de/danoeh/antennapod/util/FileNameGenerator.java
new file mode 100644
index 000000000..3bc193080
--- /dev/null
+++ b/src/de/danoeh/antennapod/util/FileNameGenerator.java
@@ -0,0 +1,36 @@
+package de.danoeh.antennapod.util;
+
+import java.util.Arrays;
+
+/** Generates valid filenames for a given string. */
+public class FileNameGenerator {
+	
+	private static final char[] ILLEGAL_CHARACTERS = { '/', '\\', '?', '%',
+			'*', ':', '|', '"', '<', '>' };
+	static {
+		Arrays.sort(ILLEGAL_CHARACTERS);
+	}
+	
+	private FileNameGenerator() {
+
+	}
+
+	/**
+	 * This method will return a new string that doesn't contain any illegal
+	 * characters of the given string.
+	 */
+	public static String generateFileName(String string) {
+		StringBuilder builder = new StringBuilder();
+		for (int i = 0; i < string.length(); i++) {
+			char c = string.charAt(i);
+			if (Arrays.binarySearch(ILLEGAL_CHARACTERS, c) < 0) {
+				builder.append(c);
+			}
+		}
+		return builder.toString();
+	}
+
+	public static long generateLong(final String str) {
+		return str.hashCode();
+	}
+}
diff --git a/src/de/danoeh/antennapod/util/NumberGenerator.java b/src/de/danoeh/antennapod/util/NumberGenerator.java
deleted file mode 100644
index ff89180e1..000000000
--- a/src/de/danoeh/antennapod/util/NumberGenerator.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package de.danoeh.antennapod.util;
-
-
-/**Utility class for creating numbers.*/
-public final class NumberGenerator {
-    /** Class shall not be instantiated.*/
-    private NumberGenerator() {
-    }
-
-    /**Logging tag.*/
-    private static final String TAG = "NumberGenerator";
-
-    /** Takes a string and generates a random value out of
-     * the hash-value of that string.
-     *  @param strSeed The string to take for the return value
-     *  @return The generated random value
-     * */
-    public static long generateLong(final String strSeed) {
-        return strSeed.hashCode();
-    }
-}