Java Requires Chilkat v11.0.0+

Convert utf-8 Text File to Windows-1252

Demonstrates how to convert a text file using the utf-8 byte representation to windows-1252. Chilkat2 Java

import com.chilkatsoft.chilkat2.BinData;
import com.chilkatsoft.chilkat2.ChilkatException;

public class ChilkatExample {

    public static void main(String[] args) {
        // Converts a file containing the following to windows-1252:

        // <greetings>
        //     <message>Hello, world!</message>
        //     <message>¡Hola, mundo!</message>
        //     <message>Bonjour, le monde!</message>
        //     <message>Hallo, Welt!</message>
        //     <message>Olá, mundo!</message>
        //     <message>Привет, мир!</message>
        //     <message>你好，世界！</message>
        //     <message>こんにちは、世界！</message>
        //     <message>안녕하세요, 세계!</message>
        //     <message>😊🌍</message>
        // </greetings>

        // --------------------------------------------------------------------------------------------------------------------------
        // Note:
        // Windows-1252 is an 8-bit single-byte encoding. It can only encode:
        //
        //     The basic ASCII set (0x00–0x7F).
        //     Latin-1 Supplement (0xA0–0xFF), plus some extra printable characters (like curly quotes, €, etc.).
        //     In total: 256 possible code points, covering most Western European languages but nothing outside of Latin script.

        // --------------------------------------------------------------------------------------------------------------------------
        // Characters in your XML that are representable
        //
        //     Hello, world! ✅ (ASCII only)
        //     ¡Hola, mundo! ✅ (inverted exclamation mark U+00A1 is in Windows-1252)
        //     Bonjour, le monde! ✅
        //     Hallo, Welt! ✅
        //     Olá, mundo! ✅ (U+00E1 á and U+00F3 ó are in Windows-1252)

        // --------------------------------------------------------------------------------------------------------------------------
        // Characters that break conversion
        //
        //     Russian / Cyrillic: Привет, мир!
        //     → These are Cyrillic characters (U+041F … U+0440). Not representable in Windows-1252. Conversion would require replacement (e.g. with ? or XML character references).
        //     Chinese: 你好，世界！
        //     → CJK ideographs (U+4F60, U+597D, etc.). Not in Windows-1252.
        //     Japanese: こんにちは、世界！
        //     → Hiragana + CJK. Not in Windows-1252.
        //     Korean: 안녕하세요, 세계!
        //     → Hangul syllables. Not in Windows-1252.
        //     Emoji: 😊🌍
        //     → Unicode Supplementary Multilingual Plane (U+1F60A, U+1F30D). Windows-1252 cannot encode any emoji.

        BinData bd = new BinData();

        // Load the utf-8 bytes.
        try {
            bd.loadFile("qa_data/xml/utf8test.xml");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // If allOrNone = true, then the conversion fails and the contents of the BinData
        // are left unchanged if any char is unconvertable.

        // If allOrNone = false, then non-convertable chars are discarded.
        boolean allOrNone = false;
        String fromCharset = "utf-8";
        String toCharset = "windows-1252";

        // The return value will be false if any utf-8 chars were discarded because of non-convertability.
        try {
            bd.charsetConvert(fromCharset, toCharset, allOrNone);
            System.out.println("All utf-8 chars were converted to windows-1252");
        } catch (ChilkatException e) {
            System.out.println("Some utf-8 chars could not be converted to windows-1252");
        }

        bd.writeFile("c:/temp/qa_output/out.xml");

        // The output file contains the following, where all non-convertable chars were discarded

        // <greetings>
        //     <message>Hello, world!</message>
        //     <message>¡Hola, mundo!</message>
        //     <message>Bonjour, le monde!</message>
        //     <message>Hallo, Welt!</message>
        //     <message>Olá, mundo!</message>
        //     <message>, !</message>
        //     <message></message>
        //     <message></message>
        //     <message>, !</message>
        //     <message></message>
        // </greetings>
    }
}