X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Futil%2FStringUtils.java;fp=src%2Fjalview%2Futil%2FStringUtils.java;h=3025e8a328f4e156d7fa685aa53714268cc38eb4;hb=304e64fb34b32659be1bbfd39fb4e15b2f79586e;hp=bf5b87a4f873a2ba9185109467cb4c5ef634fc9d;hpb=61ff8fb4efa315c35149c9d11850d99e3d00c441;p=jalview.git

diff --git a/src/jalview/util/StringUtils.java b/src/jalview/util/StringUtils.java
index bf5b87a..3025e8a 100644
--- a/src/jalview/util/StringUtils.java
+++ b/src/jalview/util/StringUtils.java
@@ -119,29 +119,6 @@ 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'.
@@ -570,4 +547,29 @@ 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;
+  }
 }