Sanitizes a string so it can be used as an identifier - Java java.lang

Java examples for java.lang:String Unicode

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Description

Sanitizes a string so it can be used as an identifier

Demo Code

// Copyright 2014 Michel Kraemer
////from  w  ww  . j  a v a  2s . c  o  m
// 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 com.java2s;

public class Main {
    public static void main(String[] argv) {
        String s = "java2s.com";
        System.out.println(sanitize(s));
    }

    /**
     * Sanitizes a string so it can be used as an identifier
     * @param s the string to sanitize
     * @return the sanitized string
     */
    public static String sanitize(String s) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < s.length(); ++i) {
            char c = s.charAt(i);
            switch (c) {
            case '\u00c0':
            case '\u00c1':
            case '\u00c3':
            case '\u00c4':
                sb.append('A');
                break;

            case '\u00c8':
            case '\u00c9':
            case '\u00cb':
                sb.append('E');
                break;

            case '\u00cc':
            case '\u00cd':
            case '\u00cf':
                sb.append('I');
                break;

            case '\u00d2':
            case '\u00d3':
            case '\u00d5':
            case '\u00d6':
                sb.append('O');
                break;

            case '\u00d9':
            case '\u00da':
            case '\u00dc':
                sb.append('U');
                break;

            case '\u00e0':
            case '\u00e1':
            case '\u00e3':
            case '\u00e4':
                sb.append('a');
                break;

            case '\u00e8':
            case '\u00e9':
            case '\u00eb':
                sb.append('e');
                break;

            case '\u00ec':
            case '\u00ed':
            case '\u00ef':
                sb.append('i');
                break;

            case '\u00f2':
            case '\u00f3':
            case '\u00f6':
            case '\u00f5':
                sb.append('o');
                break;

            case '\u00f9':
            case '\u00fa':
            case '\u00fc':
                sb.append('u');
                break;

            case '\u00d1':
                sb.append('N');
                break;

            case '\u00f1':
                sb.append('n');
                break;

            case '\u010c':
                sb.append('C');
                break;

            case '\u0160':
                sb.append('S');
                break;

            case '\u017d':
                sb.append('Z');
                break;

            case '\u010d':
                sb.append('c');
                break;

            case '\u0161':
                sb.append('s');
                break;

            case '\u017e':
                sb.append('z');
                break;

            case '\u00df':
                sb.append("ss");
                break;

            default:
                if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
                        || (c >= '0' && c <= '9')) {
                    sb.append(c);
                } else {
                    sb.append('_');
                }
                break;
            }
        }
        return sb.toString();
    }
}

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