Identifier issue fix for module, list, container, leaf, leaf-list, prefix + date agr string for revision fix
Change-Id: Id9d596512f35b54f6359d361402bcd0180b71678
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/parserutils/ListenerUtil.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/parserutils/ListenerUtil.java
new file mode 100644
index 0000000..41b2418
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/parserutils/ListenerUtil.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * 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.onosproject.yangutils.parser.impl.parserutils;
+
+import org.antlr.v4.runtime.ParserRuleContext;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.regex.Pattern;
+import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.parser.exceptions.ParserException;
+
+/**
+ * It's a utility for listener.
+ */
+public final class ListenerUtil {
+ private static final Pattern IDENTIFIER_PATTERN = Pattern.compile("[a-zA-Z_][a-zA-Z0-9_.-]*");
+ private static final String PLUS = "+";
+ private static final int IDENTIFIER_LENGTH = 64;
+
+ /**
+ * Creates a new listener util.
+ */
+ private ListenerUtil() {
+ }
+
+ /**
+ * Removes doubles quotes and concatenates if string has plus symbol.
+ *
+ * @param yangStringData string from yang file
+ * @return concatenated string after removing double quotes
+ */
+ public static String removeQuotesAndHandleConcat(String yangStringData) {
+
+ yangStringData = yangStringData.replace("\"", "");
+ String[] tmpData = yangStringData.split(Pattern.quote(PLUS));
+ StringBuilder builder = new StringBuilder();
+ for (String yangString : tmpData) {
+ builder.append(yangString);
+ }
+ return builder.toString();
+ }
+
+ /**
+ * Validates identifier and returns concatenated string if string contains plus symbol.
+ *
+ * @param identifier string from yang file
+ * @param yangConstruct yang construct for creating error message
+ * @param ctx yang construct's context to get the line number and character position
+ * @return concatenated string after removing double quotes
+ */
+ public static String getValidIdentifier(String identifier, YangConstructType yangConstruct, ParserRuleContext ctx) {
+
+ String identifierString = removeQuotesAndHandleConcat(identifier);
+ ParserException parserException;
+
+ if (identifierString.length() > IDENTIFIER_LENGTH) {
+ parserException = new ParserException("YANG file error : " +
+ YangConstructType.getYangConstructType(yangConstruct) + " name " + identifierString + " is " +
+ "greater than 64 characters.");
+ } else if (!IDENTIFIER_PATTERN.matcher(identifierString).matches()) {
+ parserException = new ParserException("YANG file error : " +
+ YangConstructType.getYangConstructType(yangConstruct) + " name " + identifierString + " is not " +
+ "valid.");
+ } else {
+ return identifierString;
+ }
+
+ parserException.setLine(ctx.getStart().getLine());
+ parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
+ throw parserException;
+ }
+
+ /**
+ * Validates the revision date.
+ *
+ * @param dateToValidate input revision date
+ * @return validation result, true for success, false for failure
+ */
+ public static boolean isDateValid(String dateToValidate) {
+
+ if (dateToValidate == null || !dateToValidate.matches("[0-9]{4}-[0-9]{2}-[0-9]{2}")) {
+ return false;
+ }
+
+ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
+ sdf.setLenient(false);
+
+ try {
+ //if not valid, it will throw ParseException
+ sdf.parse(dateToValidate);
+ } catch (ParseException e) {
+ return false;
+ }
+
+ return true;
+ }
+}
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