*
* - Read/write a line of RFC4180 comma-separated values strings to/from a
* list of strings.
+ *
+ * - Compute number of visible text cells for a given Unicode codepoint or
+ * string.
+ *
+ * - Convert bytes to and from base-64 encoding.
*/
public class StringUtils {
* @return the number of text cell columns required to display this string
*/
public static int width(final String str) {
+ if (str == null) {
+ return 0;
+ }
+
int n = 0;
for (int i = 0; i < str.length();) {
int ch = str.codePointAt(i);
* representation i accordance with RFC 2045.
* @param sArr The bytes to convert. If <code>null</code> or length 0
* an empty array will be returned.
- * @param lineSep Optional "\r\n" after 76 characters, unless end of
- * file.<br> No line separator will be in breach of RFC 2045 which
- * specifies max 76 per line but will be a little faster.
* @return A BASE64 encoded array. Never <code>null</code>.
*/
public final static String toBase64(byte[] sArr) {