Java String Quote quoteCanonical(String s)

Description

Minimal escape form.

License

Apache License

Declaration

public static String quoteCanonical(String s) 

Method Source Code

//package com.java2s;
/*//from www .j ava  2s . co  m
 * Copyright 2006-2014 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.
 */

public class Main {
    /**
     * Minimal escape form.
     */
    public static String quoteCanonical(String s) {
        if (s == null || s.length() == 0) {
            return "\"\"";
        }

        int len = s.length();
        StringBuilder sb = new StringBuilder(len + 4);

        sb.append('"');
        for (int i = 0; i < len; i += 1) {
            char c = s.charAt(i);
            switch (c) {
            case '\\':
            case '"':
                sb.append('\\');
                sb.append(c);
                break;
            default:
                if (c < ' ') {
                    String t = "000" + Integer.toHexString(c);
                    sb.append("\\u").append(t.substring(t.length() - 4));
                } else {
                    sb.append(c);
                }
            }
        }
        sb.append('"');
        return sb.toString();
    }
}

Related

1. quoteArgument(final String argument)
2. quoteArgument(String arg)
3. quoteAtom(String term)
4. quoteAtom(String term)
5. quoteAttrValue(String s)
6. quoteCeylonKeywords(String qualifiedName)
7. quoteCharacterData(char[] ch, int start, int length)
8. quoteCharacterData(String s)
9. quoteCharacters(String s)