Java String Normalize normalizePackageNamePart(String name)

Description

normalize Package Name Part

License

Apache License

Declaration

private static String normalizePackageNamePart(String name) 

Method Source Code

//package com.java2s;
/**/*  ww  w . java  2  s  .c  o  m*/
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.
 */

import java.util.*;

public class Main {
    /**
     * These are java keywords as specified at the following URL.
     * http://java.sun.com/docs/books/jls/second_edition/html/lexical.doc.html#229308
     * Note that false, true, and null are not strictly keywords; they are
     * literal values, but for the purposes of this array, they can be treated
     * as literals.
     */
    private static final Set<String> KEYWORDS = new HashSet<String>(Arrays.asList("abstract", "assert", "boolean",
            "break", "byte", "case", "catch", "char", "class", "const", "continue", "default", "do", "double",
            "else", "enum", "extends", "false", "final", "finally", "float", "for", "goto", "if", "implements",
            "import", "instanceof", "int", "interface", "long", "native", "new", "null", "package", "private",
            "protected", "public", "return", "short", "static", "strictfp", "super", "switch", "synchronized",
            "this", "throw", "throws", "transient", "true", "try", "void", "volatile", "while"));

    private static String normalizePackageNamePart(String name) {
        StringBuffer sname = new StringBuffer(name.toLowerCase());

        for (int i = 0; i < sname.length(); i++) {
            sname.setCharAt(i, Character.toLowerCase(sname.charAt(i)));
        }

        for (int i = 0; i < sname.length(); i++) {
            if (!Character.isJavaIdentifierPart(sname.charAt(i))) {
                sname.setCharAt(i, '_');
            }
        }

        if (isJavaKeyword(sname.toString())) {
            sname.insert(0, '_');
        }

        if (!Character.isJavaIdentifierStart(sname.charAt(0))) {
            sname.insert(0, '_');
        }

        return sname.toString();
    }

    /**
     * checks if the input string is a valid java keyword.
     *
     * @return boolean true/false
     */
    public static boolean isJavaKeyword(String keyword) {
        return KEYWORDS.contains(keyword);
    }
}

Related

1. normalizeDose(String dose)
2. normalizeEnglishIdentifier(String id)
3. normalizeFieldNameOrPath(final String nameOrPath)
4. normalizeIndex(String input, String[] indexList)
5. normalizeMatchup(final String matchup)
6. normalizeRepositoryName(String input)
7. normalizeSearchString(String src)
8. normalizeString(String input)
9. normalizeString(String str)