1 files changed, 63 insertions, 0 deletions
diff --git a/common/src/at/gv/egovernment/moa/util/URLEncoder.java b/common/src/at/gv/egovernment/moa/util/URLEncoder.java
new file mode 100644
index 000000000..840c0c3bc
--- /dev/null
+++ b/common/src/at/gv/egovernment/moa/util/URLEncoder.java
@@ -0,0 +1,63 @@
+package at.gv.egovernment.moa.util;
+
+import java.io.ByteArrayInputStream;
+import java.io.StringWriter;
+import java.io.UnsupportedEncodingException;
+
+/**
+ * Translates a string into mime format "x-www-form-urlencoded".
+ * Provides a function missing in JDK 1.3. 
+ * @author Paul Ivancsics
+ * @version $Id$
+ */
+public class URLEncoder {
+  
+  /**
+   * Translates a string into x-www-form-urlencoded format.
+   * @param s the string to be translated
+   * @param encoding the encoding to use
+   * @return the translated string
+   * @throws UnsupportedEncodingException when the desired encoding is not supported
+   */
+  public static String encode(String s, String encoding) throws UnsupportedEncodingException {
+    byte[] barr = s.getBytes(encoding);
+    ByteArrayInputStream bin = new ByteArrayInputStream(barr);
+    StringWriter out = new StringWriter();
+    for (int b = bin.read(); b >= 0; b = bin.read())
+      encode(b, out);
+    return out.toString();
+  }
+  
+  /**
+   * Encode a character.
+   * @param ch The character to encode.
+   * @param out The <code>StringWriter</code> containing the result.
+   */
+  private static void encode(int ch, StringWriter out) {
+    if ((ch >= 'a' && ch <= 'z')
+      || (ch >= 'A' && ch <= 'Z')
+      || (ch >= '0' && ch <= '9')
+      || ch == '.' || ch == '-' || ch == '*' || ch == '_')
+      out.write(ch);
+    else if (ch == ' ')
+      out.write('+');
+    else
+      encodeHex(ch, out);
+  }
+  
+  /**
+   * Encode a character as an escaped hex value. 
+   * @param ch The character to encode.
+   * @param out The <code>StringWriter</code> containing the result.
+   */
+  private static void encodeHex(int ch, StringWriter out) {
+    out.write('%');
+    String hex = Integer.toHexString(ch).toUpperCase();
+    if (hex.length() < 2)
+      out.write('0');
+    else
+      out.write(hex.charAt(hex.length() - 2));
+    out.write(hex.charAt(hex.length() - 1));
+  }
+
+}