add StringUtil for repetitive string operations

PhilippSalvisberg · PhilippSalvisberg · commit b33bbda9718f · 2020-05-25T11:27:16.000+02:00
diff --git a/sqldev/src/main/java/org/utplsql/sqldev/dal/StringUtil.java b/sqldev/src/main/java/org/utplsql/sqldev/dal/StringUtil.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2020 Philipp Salvisberg <philipp.salvisberg@trivadis.com>
+ * 
+ * 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.
+ */
+package org.utplsql.sqldev.dal;
+
+import java.util.Collections;
+import java.util.List;
+
+public class StringUtil {
+    // do not instantiate this class
+    private StringUtil() {
+        super();
+    }
+    
+    public static String getCSV(List<String> list, int indentSpaces) {
+        final StringBuilder sb = new StringBuilder();
+        final String indent = String.join("", Collections.nCopies(indentSpaces, " "));
+        for (final String path : list) {
+            if (sb.length() > 0) {
+                sb.append(",\n");
+            }
+            sb.append(indent);
+            sb.append("'");
+            sb.append(path);
+            sb.append("'");
+        }
+        sb.append("\n");
+        return sb.toString();
+    }
+}
