X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Futil%2FStringUtils.java;h=f0bc177a7c5d4c46ef628c0cbcbe8a0612214a79;hb=eb349b848556f0d8537755d5d869366479364d45;hp=1f114a8c8f4fb10f863d112150364ff122906a7c;hpb=3b3c59cfa50e942d2fa5b367b7117cade9459ce7;p=jalview.git

diff --git a/src/jalview/util/StringUtils.java b/src/jalview/util/StringUtils.java
index 1f114a8..f0bc177 100644
--- a/src/jalview/util/StringUtils.java
+++ b/src/jalview/util/StringUtils.java
@@ -117,29 +117,6 @@ public class StringUtils
   }
 
   /**
-   * Returns the last part of 'input' after the last occurrence of 'token'. For
-   * example to extract only the filename from a full path or URL.
-   * 
-   * @param input
-   * @param token
-   *          a delimiter which must be in regular expression format
-   * @return
-   */
-  public static String getLastToken(String input, String token)
-  {
-    if (input == null)
-    {
-      return null;
-    }
-    if (token == null)
-    {
-      return input;
-    }
-    String[] st = input.split(token);
-    return st[st.length - 1];
-  }
-
-  /**
    * Parses the input string into components separated by the delimiter. Unlike
    * String.split(), this method will ignore occurrences of the delimiter which
    * are nested within single quotes in name-value pair values, e.g. a='b,c'.
@@ -568,4 +545,29 @@ public class StringUtils
     }
     return enc;
   }
+
+  /**
+   * Answers true if the string is not empty and consists only of digits, or
+   * characters 'a'-'f' or 'A'-'F', else false
+   * 
+   * @param s
+   * @return
+   */
+  public static boolean isHexString(String s)
+  {
+    int j = s.length();
+    if (j == 0)
+    {
+      return false;
+    }
+    for (int i = 0; i < j; i++)
+    {
+      int c = s.charAt(i);
+      if (!(c >= '0' && c <= '9' || c >= 'a' && c <= 'f' || c >= 'A' && c <= 'F'))
+      {
+        return false;
+      }
+    }
+    return true;
+  }
 }