Java XML Data Type Converter getTextAsJavaByteArrayInitializer( String text, String charsetName, int maxArraySize)

Description

get Text As Java Byte Array Initializer

License

Apache License

Declaration

static public List<String> getTextAsJavaByteArrayInitializer(
            String text, String charsetName, int maxArraySize)
            throws UnsupportedEncodingException 

Method Source Code

//package com.java2s;
/*//  w  ww.  j  a  v  a  2  s.c  om
 * Copyright 2015 Fizzed Inc.
 *
 * 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.
 */

import java.io.UnsupportedEncodingException;

import java.util.ArrayList;

import java.util.List;

public class Main {
    static public List<String> getTextAsJavaByteArrayInitializer(
            String text, String charsetName, int maxArraySize)
            throws UnsupportedEncodingException {
        byte[] bytes = text.getBytes(charsetName);

        List<String> arrays = new ArrayList<>();

        for (int length = 0; length < bytes.length;) {

            StringBuilder sb = new StringBuilder();

            sb.append("new byte[] { ");

            for (int chunk = 0; length < bytes.length
                    && chunk < maxArraySize; chunk++) {

                byte b = bytes[length];

                if (chunk != 0) {
                    sb.append(", ");
                }

                appendByteAsJavaByteInitializer(sb, b);

                chunk++;
                length++;
            }

            sb.append(" };");

            arrays.add(sb.toString());
        }

        return arrays;
    }

    static public void appendByteAsJavaByteInitializer(StringBuilder sb,
            byte b) {
        if (b >= 0 && b < 128) {
            if (Character.isAlphabetic(b)) {
                sb.append("'").append((char) b).append("'");
            } else {
                // no cast needed
                sb.append("0x").append(
                        javax.xml.bind.DatatypeConverter
                                .printHexBinary(new byte[] { b }));
            }
        } else {
            // cast needed
            sb.append("(byte)0x").append(
                    javax.xml.bind.DatatypeConverter
                            .printHexBinary(new byte[] { b }));
        }
    }
}

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