java/src/org/openantivirus/engine/credo WildcardPattern.java,1.1,1.2

Update of /cvsroot/openantivirus/java/src/org/openantivirus/engine/credo
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv14318/src/org/openantivirus/engine/credo

Modified Files:
	WildcardPattern.java 
Log Message:
Speed improvement: bytes in pattern file are now compared against a sequence of hex digits instead of substring()ed and parsed

Index: WildcardPattern.java
===================================================================
RCS file: /cvsroot/openantivirus/java/src/org/openantivirus/engine/credo/WildcardPattern.java,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- WildcardPattern.java	18 May 2004 09:03:30 -0000	1.1
+++ WildcardPattern.java	26 May 2004 20:08:47 -0000	1.2
@@ -39,6 +39,8 @@
     public final byte[] pattern;
     public final int[] skipList;
     
+    private final String HEXDIGITS = "0123456789ABCDEF";
+    
     public WildcardPattern(String hex) {
         if (hex.length() % 2 != 0) {
             throw new IllegalArgumentException("Malformed hexstring: " + hex);
@@ -51,8 +53,9 @@
         int skipCount = 0;
         boolean skip = false;
         for (int i = 0; i < hex.length(); i += 2) {
-            final String character = hex.substring(i, i + 2);
-            if (character.equals("??")) {
+            final char c1 = hex.charAt(i);
+            final char c2 = hex.charAt(i + 1);
+            if (c1 == '?' && c2 == '?') {
                 if (skip) {
                     skipCount++;
                 } else {
@@ -68,7 +71,8 @@
                     colSkipList.add(new Integer(skipCount));
                     skipCount = 1;
                 }
-                pattern[i / 2] = (byte) Integer.parseInt(character, 16);
+                pattern[i / 2] = (byte) ((HEXDIGITS.indexOf(c1) << 4)
+                                         + HEXDIGITS.indexOf(c2));
             }
         }
         



-------------------------------------------------------
This SF.Net email is sponsored by: Oracle 10g
Get certified on the hottest thing ever to hit the market... Oracle 10g. 
Take an Oracle 10g class now, and we'll give you the exam FREE.
http://ads.osdn.com/?ad_id=3149&alloc_id=8166&op=click