added mail codecs to Encode.java

darcs-hash:20050221092533-5007d-9d73f3272a5db909110f365b9432a6c82e4a5526.gz

diff --git a/src/org/ibex/util/Encode.java b/src/org/ibex/util/Encode.java
index 26522d7..c8f20ef 100644 (file)
--- a/src/org/ibex/util/Encode.java
+++ b/src/org/ibex/util/Encode.java
@@ -15,6 +15,60 @@ import java.util.zip.GZIPOutputStream;
  */
 public final class Encode {
 
+    public static class QuotedPrintable {
+        public static String decode(String s, boolean lax) {
+        //
+        //   =XX  -> hex representation, must be uppercase
+        //   9, 32, 33-60, 62-126 can be literal
+        //   9, 32 at end-of-line must get encoded
+        //   trailing whitespace must be deleted when decoding
+        //   =\n = soft line break
+        //   lines cannot be more than 76 chars long
+        //
+
+            // lax is used for RFC2047 headers; removes restrictions on which chars you can encode
+            return s;
+        }
+    }
+
+
+    public static class RFC2047 {
+        public static String decode(String s) {
+            /*
+            try { while (s.indexOf("=?") != -1) {
+                String pre = s.substring(0, s.indexOf("=?"));
+                s = s.substring(s.indexOf("=?") + 2);
+
+                // MIME charset; FIXME use this
+                String charset = s.substring(0, s.indexOf('?')).toLowerCase();
+                s = s.substring(s.indexOf('?') + 1);
+
+                String encoding = s.substring(0, s.indexOf('?')).toLowerCase();
+                s = s.substring(s.indexOf('?') + 1);
+
+                String encodedText = s.substring(0, s.indexOf("?="));
+
+                if (encoding.equals("b"))      encodedText = new String(Base64.decode(encodedText));
+
+                // except that ANY char can be endoed (unlike real qp)
+                else if (encoding.equals("q")) encodedText = MIME.QuotedPrintable.decode(encodedText, true);
+                else Log.warn(MIME.class, "unknown RFC2047 encoding \""+encoding+"\"");
+
+                String post = s.substring(s.indexOf("?=") + 2);
+                s = pre + encodedText + post;
+
+                // FIXME re-encode when transmitting
+
+            } } catch (Exception e) {
+                Log.warn(MIME.class, "error trying to decode RFC2047 encoded-word: \""+s+"\"");
+                Log.warn(MIME.class, e);
+            }
+            */
+            return s;
+        }
+    }
+
+
     public static long twoFloatsToLong(float a, float b) {
         return ((Float.floatToIntBits(a) & 0xffffffffL) << 32) | (Float.floatToIntBits(b) & 0xffffffffL); }
     public static float longToFloat1(long l) { return Float.intBitsToFloat((int)(l >> 32)); }