private boolean isSupportedEncoding(String encoding) {
boolean supported;
try {
supported = java.nio.charset.Charset.isSupported(encoding);
} catch (java.nio.charset.IllegalCharsetNameException e) {
supported = false;
}
return supported;
}
/*
* Save document using encoding declared in XML prolog if possible otherwise
* at UTF-8 (in such case it updates the prolog).
*/
public void saveDocument() throws java.io.IOException {
final javax.swing.text.StyledDocument doc = getDocument();
String defaultEncoding = "UTF-8"; // NOI18N
// dependency on xml/core
String enc = EncodingUtil.detectEncoding(doc);
boolean changeEncodingToDefault = false;
if (enc == null) enc = defaultEncoding;
// test encoding
if (!isSupportedEncoding(enc)) {
NotifyDescriptor nd =
new NotifyDescriptor.Confirmation(
NbBundle.getMessage(
StrutsConfigEditorSupport.class,
"MSG_BadEncodingDuringSave", // NOI18N
new Object[] {
getDataObject().getPrimaryFile().getNameExt(), enc, defaultEncoding
}),
NotifyDescriptor.YES_NO_OPTION,
NotifyDescriptor.WARNING_MESSAGE);
nd.setValue(NotifyDescriptor.NO_OPTION);
DialogDisplayer.getDefault().notify(nd);
if (nd.getValue() != NotifyDescriptor.YES_OPTION) return;
changeEncodingToDefault = true;
}
if (!changeEncodingToDefault) {
// is it possible to save the document in the encoding?
try {
java.nio.charset.CharsetEncoder coder = java.nio.charset.Charset.forName(enc).newEncoder();
if (!coder.canEncode(doc.getText(0, doc.getLength()))) {
NotifyDescriptor nd =
new NotifyDescriptor.Confirmation(
NbBundle.getMessage(
StrutsConfigEditorSupport.class,
"MSG_BadCharConversion", // NOI18N
new Object[] {getDataObject().getPrimaryFile().getNameExt(), enc}),
NotifyDescriptor.YES_NO_OPTION,
NotifyDescriptor.WARNING_MESSAGE);
nd.setValue(NotifyDescriptor.NO_OPTION);
DialogDisplayer.getDefault().notify(nd);
if (nd.getValue() != NotifyDescriptor.YES_OPTION) return;
}
} catch (javax.swing.text.BadLocationException e) {
Logger.getLogger("global").log(Level.INFO, null, e);
}
super.saveDocument();
// moved from Env.save()
getDataObject().setModified(false);
} else {
// update prolog to new valid encoding
try {
final int MAX_PROLOG = 1000;
int maxPrologLen = Math.min(MAX_PROLOG, doc.getLength());
final char prolog[] = doc.getText(0, maxPrologLen).toCharArray();
int prologLen = 0; // actual prolog length
// parse prolog and get prolog end
if (prolog[0] == '<' && prolog[1] == '?' && prolog[2] == 'x') {
// look for delimitting ?>
for (int i = 3; i < maxPrologLen; i++) {
if (prolog[i] == '?' && prolog[i + 1] == '>') {
prologLen = i + 1;
break;
}
}
}
final int passPrologLen = prologLen;
Runnable edit =
new Runnable() {
public void run() {
try {
doc.remove(0, passPrologLen + 1); // +1 it removes exclusive
doc.insertString(
0,
"<?xml version='1.0' encoding='UTF-8' ?> \n<!-- was: "
+ new String(prolog, 0, passPrologLen + 1)
+ " -->",
null); // NOI18N
} catch (BadLocationException e) {
if (System.getProperty("netbeans.debug.exceptions") != null) // NOI18N
e.printStackTrace();
}
}
};
NbDocument.runAtomic(doc, edit);
super.saveDocument();
// moved from Env.save()
getDataObject().setModified(false);
} catch (javax.swing.text.BadLocationException e) {
Logger.getLogger("global").log(Level.INFO, null, e);
}
}
}
