X-Git-Url: http://git.nikiroo.be/?a=blobdiff_plain;f=src%2Fbe%2Fnikiroo%2Fjvcard%2Ftui%2FStringUtils.java;h=efbce6af8a09027b941f3f1dc58344f5a88aef26;hb=cf77cb3542f2aefbebdb9aa00b358dbeb4489a73;hp=382922605260260c8f4998da741757d277ba9f4d;hpb=adf9c44949504512002cff293641225b31ec568a;p=jvcard.git

diff --git a/src/be/nikiroo/jvcard/tui/StringUtils.java b/src/be/nikiroo/jvcard/tui/StringUtils.java
index 3829226..efbce6a 100644
--- a/src/be/nikiroo/jvcard/tui/StringUtils.java
+++ b/src/be/nikiroo/jvcard/tui/StringUtils.java
@@ -1,7 +1,12 @@
 package be.nikiroo.jvcard.tui;
 
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
 import java.text.Normalizer;
 import java.text.Normalizer.Form;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
 import java.util.regex.Pattern;
 
 import com.googlecode.lanterna.gui2.LinearLayout.Alignment;
@@ -135,4 +140,67 @@ public class StringUtils {
 
 		return input;
 	}
+
+	/**
+	 * Convert between time in milliseconds to {@link String} in a "static" way
+	 * (to exchange data over the wire, for instance).
+	 * 
+	 * @param time
+	 *            the time in milliseconds
+	 * 
+	 * @return the time as a {@link String}
+	 */
+	static public String fromTime(long time) {
+		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+		return sdf.format(new Date(time));
+	}
+
+	/**
+	 * Convert between time as a {@link String} to milliseconds in a "static"
+	 * way (to exchange data over the wire, for instance).
+	 * 
+	 * @param time
+	 *            the time as a {@link String}
+	 * 
+	 * @return the time in milliseconds
+	 */
+	static public long toTime(String display) {
+		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+		try {
+			return sdf.parse(display).getTime();
+		} catch (ParseException e) {
+			return -1;
+		}
+	}
+
+	/**
+	 * Return a hash of the given {@link String}.
+	 * 
+	 * @param input
+	 *            the input data
+	 * 
+	 * @return the hash
+	 */
+	static public String getHash(String input) {
+		try {
+			MessageDigest md = MessageDigest.getInstance("MD5");
+			md.update(input.getBytes());
+			byte byteData[] = md.digest();
+
+			StringBuffer hexString = new StringBuffer();
+			for (int i = 0; i < byteData.length; i++) {
+				String hex = Integer.toHexString(0xff & byteData[i]);
+				if (hex.length() == 1)
+					hexString.append('0');
+				hexString.append(hex);
+			}
+
+			return hexString.toString();
+		} catch (NoSuchAlgorithmException e) {
+			// all JVM most probably have an MD5 implementation, but even if
+			// not, returning the input is "correct", if inefficient and
+			// unsecure
+			return input;
+		}
+	}
 }