org.quickfixj.CharsetSupport Maven / Gradle / Ivy
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package org.quickfixj;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
public class CharsetSupport {
private static final Charset CHARSET_ISO_8859_1 = Charset.forName("ISO-8859-1");
private static final Charset CHARSET_ASCII = Charset.forName("US-ASCII");
private static String charset = getDefaultCharset();
private static Charset charsetInstance = Charset.forName(charset);
public static String getDefaultCharset() {
return "ISO-8859-1";
}
/**
* Returns whether the given charset's byte representation of a string
* is equivalent (as unsigned values) to the string characters themselves.
*
* @param charset a charset
* @return whether the charset encoding is string-equivalent
*/
public static boolean isStringEquivalent(Charset charset) {
// ASCII and ISO-8859-1 are unique in that their encoded byte representation
// is equivalent to their respective Java String (UTF-16BE) chars
return charset.equals(CHARSET_ISO_8859_1) || charset.equals(CHARSET_ASCII);
}
public static void setCharset(String charset) throws UnsupportedEncodingException {
CharsetSupport.charset = validate(charset);
CharsetSupport.charsetInstance = Charset.forName(charset);
}
public static String getCharset() {
return charset;
}
public static Charset getCharsetInstance() {
return charsetInstance;
}
public static String validate(String charset) throws UnsupportedEncodingException {
if (!Charset.isSupported(charset)) {
throw new UnsupportedEncodingException(charset);
}
return charset;
}
}