Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;

import java.nio.charset.Charset;
import java.nio.charset.CodingErrorAction;

public class Main {
    /**
     * List of Japanese encodings to convert text for data importing.
     * These encodings are tries in the order, in other words, UTF-8 is the most high-prioritized
     * encoding.
     */
    private static final String[] JAPANESE_ENCODING_LIST = { "UTF-8", "EUC-JP", "ISO-2022-JP", "Shift_JIS",
            "UTF-16", };

    /**
     * Returns the {@code String} instance with detecting the Japanese encoding.
     * @throws UnsupportedEncodingException if it fails to detect the encoding.
     */
    static String toStringWithEncodingDetection(ByteBuffer buffer) throws UnsupportedEncodingException {
        for (String encoding : JAPANESE_ENCODING_LIST) {
            buffer.position(0);
            try {
                Charset charset = Charset.forName(encoding);
                CharBuffer result = charset.newDecoder().onMalformedInput(CodingErrorAction.REPORT)
                        .onUnmappableCharacter(CodingErrorAction.REPORT).decode(buffer);
                String str = result.toString();
                if (str.length() > 0 && str.charAt(0) == 0xFEFF) {
                    // Remove leading BOM if necessary.
                    str = str.substring(1);
                }
                return str;
            } catch (Exception e) {
                // Ignore exceptions, and retry next encoding.
            }
        }

        throw new UnsupportedEncodingException("Failed to detect encoding");
    }
}