1 files changed, 84 insertions, 0 deletions
diff --git a/tags/2.1/src/main/java/org/mockftpserver/core/util/PatternUtil.java b/tags/2.1/src/main/java/org/mockftpserver/core/util/PatternUtil.java
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index 0000000..88a4ea7
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+++ b/tags/2.1/src/main/java/org/mockftpserver/core/util/PatternUtil.java
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+/*
+ * Copyright 2008 the original author or authors.
+ *
+ * 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.mockftpserver.core.util;
+
+/**
+ * Contains static utility methods related to pattern-matching and regular expressions.
+ *
+ * @author Chris Mair
+ * @version $Revision$ - $Date$
+ */
+public class PatternUtil {
+
+    /**
+     * Return true if the specified String contains one or more wildcard characters ('?' or '*')
+     *
+     * @param string - the String to check
+     * @return true if the String contains wildcards
+     */
+    public static boolean containsWildcards(String string) {
+        return string.indexOf("*") != -1 || string.indexOf("?") != -1;
+    }
+
+    /**
+     * Convert the specified String, optionally containing wildcards (? or *), to a regular expression String
+     *
+     * @param stringWithWildcards - the String to convert, optionally containing wildcards (? or *)
+     * @return an equivalent regex String
+     * @throws AssertionError - if the stringWithWildcards is null
+     */
+    public static String convertStringWithWildcardsToRegex(String stringWithWildcards) {
+        Assert.notNull(stringWithWildcards, "stringWithWildcards");
+
+        StringBuffer result = new StringBuffer();
+        for (int i = 0; i < stringWithWildcards.length(); i++) {
+            char ch = stringWithWildcards.charAt(i);
+            switch (ch) {
+                case '*':
+                    result.append(".*");
+                    break;
+                case '?':
+                    result.append('.');
+                    break;
+                case '$':
+                case '|':
+                case '[':
+                case ']':
+                case '(':
+                case ')':
+                case '.':
+                case ':':
+                case '{':
+                case '}':
+                case '\\':
+                case '^':
+                    result.append('\\');
+                    result.append(ch);
+                    break;
+                default:
+                    result.append(ch);
+            }
+        }
+        return result.toString();
+    }
+
+    /**
+     * Private constructor to prevent instantiation. All members are static.
+     */
+    private PatternUtil() {
+    }
+
+}