X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=misc%2Fenv%2Fsrc%2Fmain%2Fjava%2Forg%2Fonap%2Faaf%2Fmisc%2Fenv%2Futil%2FSplit.java;h=4069c3292fe0f70371445ca58e639ba0c46088ac;hb=4b5a7d721d994a49057e9bfb403c7bff1b376660;hp=79a740312d731231424655018457ae803f2f8e70;hpb=ac1e1ec76e9125206be91a2f32c7104c9392dc9a;p=aaf%2Fauthz.git

diff --git a/misc/env/src/main/java/org/onap/aaf/misc/env/util/Split.java b/misc/env/src/main/java/org/onap/aaf/misc/env/util/Split.java
index 79a74031..4069c329 100644
--- a/misc/env/src/main/java/org/onap/aaf/misc/env/util/Split.java
+++ b/misc/env/src/main/java/org/onap/aaf/misc/env/util/Split.java
@@ -1,89 +1,102 @@
-/**
- * ============LICENSE_START====================================================
- * org.onap.aaf
- * ===========================================================================
- * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
- * ===========================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * ============LICENSE_END====================================================
- *
- */
-
-package org.onap.aaf.misc.env.util;
-
-/**
- * Split by Char, optional Trim
- * 
- * Note: I read the String split and Pattern split code, and we can do this more efficiently for a single Character
- * 
- * Jonathan 8/20/2015
- */
-
-public class Split {
-	  public static String[] split(char c, String value) {
-		  // Count items to preallocate Array (memory alloc is more expensive than counting twice)
-		  int count,idx;
-		  for(count=1,idx=value.indexOf(c);idx>=0;idx=value.indexOf(c,++idx),++count);
-		  String[] rv = new String[count];
-		  if(count==1) {
-			  rv[0]=value;
-		  } else {
-			  int last=0;
-			  count=-1;
-			  for(idx=value.indexOf(c);idx>=0;idx=value.indexOf(c,idx)) {
-				  rv[++count]=value.substring(last,idx);
-				  last = ++idx;
-			  }
-			  rv[++count]=value.substring(last);
-		  }
-		  return rv;
-	  }
-
-	  public static String[] splitTrim(char c, String value) {
-		  // Count items to preallocate Array (memory alloc is more expensive than counting twice)
-		  int count,idx;
-		  for(count=1,idx=value.indexOf(c);idx>=0;idx=value.indexOf(c,++idx),++count);
-		  String[] rv = new String[count];
-		  if(count==1) {
-			  rv[0]=value.trim();
-		  } else {
-			  int last=0;
-			  count=-1;
-			  for(idx=value.indexOf(c);idx>=0;idx=value.indexOf(c,idx)) {
-				  rv[++count]=value.substring(last,idx).trim();
-				  last = ++idx;
-			  }
-			  rv[++count]=value.substring(last).trim();
-		  }
-		  return rv;
-	  }
-
-	  public static String[] splitTrim(char c, String value, int size) {
-		  int idx;
-		  String[] rv = new String[size];
-		  if(size==1) {
-			  rv[0]=value.trim();
-		  } else {
-			  int last=0;
-			  int count=-1;
-			  size-=2;
-			  for(idx=value.indexOf(c);idx>=0 && count<size;idx=value.indexOf(c,idx)) {
-				  rv[++count]=value.substring(last,idx).trim();
-				  last = ++idx;
-			  }
-			  rv[++count]=value.substring(last).trim();
-		  }
-		  return rv;
-	  }
-
-}
+/**
+ * ============LICENSE_START====================================================
+ * org.onap.aaf
+ * ===========================================================================
+ * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
+ * ===========================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END====================================================
+ *
+ */
+
+package org.onap.aaf.misc.env.util;
+
+/**
+ * Split by Char, optional Trim
+ * 
+ * Note: I read the String split and Pattern split code, and we can do this more efficiently for a single Character
+ * 
+ * Jonathan 8/20/2015
+ */
+
+public class Split {
+      private static final String[] BLANK = new String[0];
+      
+      public static String[] split(char c, String value) {
+          if(value==null) {
+              return BLANK;
+          }
+
+          // Count items to preallocate Array (memory alloc is more expensive than counting twice)
+          int count,idx;
+          for(count=1,idx=value.indexOf(c);idx>=0;idx=value.indexOf(c,++idx),++count);
+          String[] rv = new String[count];
+          if(count==1) {
+              rv[0]=value;
+          } else {
+              int last=0;
+              count=-1;
+              for(idx=value.indexOf(c);idx>=0;idx=value.indexOf(c,idx)) {
+                  rv[++count]=value.substring(last,idx);
+                  last = ++idx;
+              }
+              rv[++count]=value.substring(last);
+          }
+          return rv;
+      }
+
+      public static String[] splitTrim(char c, String value) {
+          if(value==null) {
+              return BLANK;
+          }
+          // Count items to preallocate Array (memory alloc is more expensive than counting twice)
+          int count,idx;
+          for(count=1,idx=value.indexOf(c);idx>=0;idx=value.indexOf(c,++idx),++count);
+          String[] rv = new String[count];
+          if(count==1) {
+              rv[0]=value.trim();
+          } else {
+              int last=0;
+              count=-1;
+              for(idx=value.indexOf(c);idx>=0;idx=value.indexOf(c,idx)) {
+                  rv[++count]=value.substring(last,idx).trim();
+                  last = ++idx;
+              }
+              rv[++count]=value.substring(last).trim();
+          }
+          return rv;
+      }
+
+      public static String[] splitTrim(char c, String value, int size) {
+          if(value==null) {
+              return BLANK;
+          }
+
+          int idx;
+          String[] rv = new String[size];
+          if(size==1) {
+              rv[0]=value.trim();
+          } else {
+              int last=0;
+              int count=-1;
+              size-=2;
+              for(idx=value.indexOf(c);idx>=0 && count<size;idx=value.indexOf(c,idx)) {
+                  rv[++count]=value.substring(last,idx).trim();
+                  last = ++idx;
+              }
+              rv[++count]=value.substring(last).trim();
+          }
+          return rv;
+      }
+
+}