New option: save/load contacts' photos

[jvcard.git] / src / be / nikiroo / jvcard / resources / StringUtils.java

diff --git a/src/be/nikiroo/jvcard/resources/StringUtils.java b/src/be/nikiroo/jvcard/resources/StringUtils.java
index 2009dce628ef48864d48cf51c31bab5e6eae9813..cee9fb62715158ec6c2479ea01da4975a84c1159 100644 (file)
--- a/src/be/nikiroo/jvcard/resources/StringUtils.java
+++ b/src/be/nikiroo/jvcard/resources/StringUtils.java
@@ -1,5 +1,10 @@
 package be.nikiroo.jvcard.resources;
 
+import java.awt.Image;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.text.Normalizer;
@@ -9,6 +14,9 @@ import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.regex.Pattern;
 
+import javax.imageio.ImageIO;
+import javax.xml.bind.DatatypeConverter;
+
 import com.googlecode.lanterna.gui2.LinearLayout.Alignment;
 
 public class StringUtils {
@@ -49,7 +57,7 @@ public class StringUtils {
         */
        static public String padString(String text, int width, boolean cut,
                        Alignment align) {
-               
+
                if (width >= 0) {
                        if (text == null)
                                text = "";
@@ -172,6 +180,51 @@ public class StringUtils {
                }
        }
 
+       /**
+        * Convert the given {@link Image} object into a Base64 representation of
+        * the same {@link Image}. object.
+        * 
+        * @param image
+        *            the {@link Image} object to convert
+        * 
+        * @return the Base64 representation
+        */
+       static public String fromImage(BufferedImage image) {
+               String imageString = null;
+               ByteArrayOutputStream out = new ByteArrayOutputStream();
+
+               try {
+                       ImageIO.write(image, "png", out);
+                       byte[] imageBytes = out.toByteArray();
+
+                       imageString = DatatypeConverter.printBase64Binary(imageBytes);
+
+                       out.close();
+               } catch (IOException e) {
+               }
+
+               return imageString;
+       }
+
+       /**
+        * Convert the given Base64 representation of an image into an {@link Image}
+        * object.
+        * 
+        * @param b64data
+        *            the {@link Image} in Base64 format
+        * 
+        * @return the {@link Image} object
+        * 
+        * @throws IOException
+        *             in case of IO error
+        */
+       static public BufferedImage toImage(String b64data) throws IOException {
+               BufferedImage image = ImageIO.read(new ByteArrayInputStream(
+                               DatatypeConverter.parseBase64Binary(b64data)));
+               image.toString();
+               return image;
+       }
+
        /**
         * Return a hash of the given {@link String}.
         *