aboutsummaryrefslogtreecommitdiff
path: root/src/main/java/org/traccar/helper/PatternUtil.java
diff options
context:
space:
mode:
Diffstat (limited to 'src/main/java/org/traccar/helper/PatternUtil.java')
-rw-r--r--src/main/java/org/traccar/helper/PatternUtil.java81
1 files changed, 81 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/helper/PatternUtil.java b/src/main/java/org/traccar/helper/PatternUtil.java
new file mode 100644
index 000000000..74813e1d9
--- /dev/null
+++ b/src/main/java/org/traccar/helper/PatternUtil.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2015 - 2017 Anton Tananaev (anton@traccar.org)
+ *
+ * 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.traccar.helper;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.lang.management.ManagementFactory;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.regex.PatternSyntaxException;
+
+public final class PatternUtil {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(PatternUtil.class);
+
+ private PatternUtil() {
+ }
+
+ public static class MatchResult {
+ private String patternMatch;
+ private String patternTail;
+ private String stringMatch;
+ private String stringTail;
+
+ public String getPatternMatch() {
+ return patternMatch;
+ }
+
+ public String getPatternTail() {
+ return patternTail;
+ }
+
+ public String getStringMatch() {
+ return stringMatch;
+ }
+
+ public String getStringTail() {
+ return stringTail;
+ }
+ }
+
+ public static MatchResult checkPattern(String pattern, String input) {
+
+ if (!ManagementFactory.getRuntimeMXBean().getInputArguments().toString().contains("-agentlib:jdwp")) {
+ throw new RuntimeException("PatternUtil usage detected");
+ }
+
+ MatchResult result = new MatchResult();
+
+ for (int i = 0; i < pattern.length(); i++) {
+ try {
+ Matcher matcher = Pattern.compile("(" + pattern.substring(0, i) + ").*").matcher(input);
+ if (matcher.matches()) {
+ result.patternMatch = pattern.substring(0, i);
+ result.patternTail = pattern.substring(i);
+ result.stringMatch = matcher.group(1);
+ result.stringTail = input.substring(matcher.group(1).length());
+ }
+ } catch (PatternSyntaxException error) {
+ LOGGER.warn("Pattern matching error", error);
+ }
+ }
+
+ return result;
+ }
+
+}