/*
* JBoss, Home of Professional Open Source.
* Copyright 2015, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.cli.parsing;
import org.jboss.as.cli.CommandFormatException;
/**
*
* @author Alexey Loubyansky
*/
public final class EscapeCharacterState extends BaseParsingState {
public static final String ID = "ESCAPED_CHARACTER";
/* private static final CharacterHandler EOC = GlobalCharacterHandlers.newErrorCharacterHandler(
"Error parsing escaped character: the character after '\' is missing.");
*/
public static final EscapeCharacterState INSTANCE = new EscapeCharacterState(false);
/**
* This one is useful when the escaping should be recognized but postponed
* (for characters that otherwise would have affected the parsing flow, such as '"').
*/
public static final EscapeCharacterState KEEP_ESCAPE = new EscapeCharacterState(true);
private final CharacterHandler handler = new CharacterHandler() {
@Override
public void handle(ParsingContext ctx)
throws CommandFormatException {
if(!keepEscape) {
ctx.replaceSpecialChars();
}
ctx.getCallbackHandler().character(ctx);
ctx.leaveState();
}
};
private final boolean keepEscape;
EscapeCharacterState() {
this(false);
}
EscapeCharacterState(boolean keepEscape) {
super(ID);
this.keepEscape = keepEscape;
setEnterHandler(new CharacterHandler(){
@Override
public void handle(ParsingContext ctx) throws CommandFormatException {
if(EscapeCharacterState.this.keepEscape ||
// not sure about this: if the input ends on '\' it's added to the content
ctx.getInput().length() - ctx.getLocation() == 1) {
ctx.getCallbackHandler().character(ctx);
}
}});
}
@Override
public CharacterHandler getHandler(char ch) {
return handler;
}
}