X-Git-Url: http://git.nikiroo.be/?a=blobdiff_plain;f=src%2Fbe%2Fnikiroo%2Futils%2Fserial%2FCustomSerializer.java;h=be89316eae07b74f6a67ccaeb589641ba81f8cea;hb=f4053377fa15da2f11e82955bfab86e673fa371c;hp=b6928eec7685b853aff33537cd2844e0bfcc24d8;hpb=db31c35860081535d6e7ddc83ab4af573bb0522e;p=nikiroo-utils.git

diff --git a/src/be/nikiroo/utils/serial/CustomSerializer.java b/src/be/nikiroo/utils/serial/CustomSerializer.java
index b6928ee..be89316 100644
--- a/src/be/nikiroo/utils/serial/CustomSerializer.java
+++ b/src/be/nikiroo/utils/serial/CustomSerializer.java
@@ -1,41 +1,59 @@
 package be.nikiroo.utils.serial;
 
+import java.io.IOException;
+
 public abstract class CustomSerializer {
 
 	protected abstract String toString(Object value);
 
-	protected abstract Object fromString(String content);
+	protected abstract Object fromString(String content) throws IOException;
 
 	protected abstract String getType();
 
-	public void encode(StringBuilder builder, Object value) {
+	/**
+	 * Encode the object into the given builder if possible (if supported).
+	 * 
+	 * @param builder
+	 *            the builder to append to
+	 * @param value
+	 *            the object to encode
+	 * @return TRUE if success, FALSE if not (the content of the builder won't
+	 *         be changed in case of failure)
+	 */
+	public boolean encode(StringBuilder builder, Object value) {
+		int prev = builder.length();
 		String customString = toString(value);
-		builder.append("custom:").append(getType()).append(":");
-		SerialUtils.encode(builder, customString);
+		builder.append("custom^").append(getType()).append("^");
+		if (!SerialUtils.encode(builder, customString)) {
+			builder.delete(prev, builder.length());
+			return false;
+		}
+
+		return true;
 	}
 
-	public Object decode(String encodedValue) {
+	public Object decode(String encodedValue) throws IOException {
 		return fromString((String) SerialUtils.decode(contentOf(encodedValue)));
 	}
 
 	public static boolean isCustom(String encodedValue) {
-		int pos1 = encodedValue.indexOf(':');
-		int pos2 = encodedValue.indexOf(':', pos1 + 1);
+		int pos1 = encodedValue.indexOf('^');
+		int pos2 = encodedValue.indexOf('^', pos1 + 1);
 
-		return pos1 >= 0 && pos2 >= 0 && encodedValue.startsWith("custom:");
+		return pos1 >= 0 && pos2 >= 0 && encodedValue.startsWith("custom^");
 	}
 
 	public static String typeOf(String encodedValue) {
-		int pos1 = encodedValue.indexOf(':');
-		int pos2 = encodedValue.indexOf(':', pos1 + 1);
+		int pos1 = encodedValue.indexOf('^');
+		int pos2 = encodedValue.indexOf('^', pos1 + 1);
 		String type = encodedValue.substring(pos1 + 1, pos2);
 
 		return type;
 	}
 
 	public static String contentOf(String encodedValue) {
-		int pos1 = encodedValue.indexOf(':');
-		int pos2 = encodedValue.indexOf(':', pos1 + 1);
+		int pos1 = encodedValue.indexOf('^');
+		int pos2 = encodedValue.indexOf('^', pos1 + 1);
 		String encodedContent = encodedValue.substring(pos2 + 1);
 
 		return encodedContent;