@JRubyMethod(visibility = PRIVATE)
public IRubyObject initialize(
ThreadContext context, IRubyObject src, IRubyObject dest, IRubyObject _opt) {
Ruby runtime = context.runtime;
EncodingService encodingService = runtime.getEncodingService();
// both may be null
Encoding srcEncoding = encodingService.getEncodingFromObjectNoError(src);
Encoding destEncoding = encodingService.getEncodingFromObjectNoError(dest);
int flags = 0;
IRubyObject replace = context.nil;
if (srcEncoding == destEncoding && srcEncoding != null) {
throw runtime.newConverterNotFoundError(
"code converter not found (" + srcEncoding + " to " + destEncoding + ")");
}
// Ensure we'll be able to get charsets fo these encodings
try {
if (srcEncoding != destEncoding) {
if (srcEncoding != null) encodingService.charsetForEncoding(srcEncoding);
if (destEncoding != null) encodingService.charsetForEncoding(destEncoding);
}
} catch (RaiseException e) {
if (e.getException().getMetaClass().getBaseName().equals("CompatibilityError")) {
throw runtime.newConverterNotFoundError(
"code converter not found (" + srcEncoding + " to " + destEncoding + ")");
} else {
throw e;
}
}
if (!_opt.isNil()) {
if (_opt instanceof RubyHash) {
RubyHash opt = (RubyHash) _opt;
flags |= EncodingUtils.econvPrepareOpts(context, opt, new IRubyObject[] {opt});
IRubyObject value = opt.fastARef(runtime.newSymbol("replace"));
if (value != null) {
replace = value;
}
} else {
flags = (int) _opt.convertToInteger().getLongValue();
replace = context.nil;
}
}
transcoder = new CharsetTranscoder(context, destEncoding, srcEncoding, flags, replace);
return context.runtime.getNil();
}
@JRubyMethod(compat = RUBY1_9, meta = true)
public static IRubyObject asciicompat_encoding(
ThreadContext context, IRubyObject self, IRubyObject strOrEnc) {
Ruby runtime = context.runtime;
EncodingService encodingService = runtime.getEncodingService();
Encoding encoding = encodingService.getEncodingFromObjectNoError(strOrEnc);
if (encoding == null) {
return context.nil;
}
if (encoding.isAsciiCompatible()) {
return context.nil;
}
Encoding asciiCompat = NONASCII_TO_ASCII.get(encoding);
if (asciiCompat == null) {
throw runtime.newConverterNotFoundError("no ASCII compatible encoding found for " + strOrEnc);
}
return encodingService.convertEncodingToRubyEncoding(asciiCompat);
}