/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2006 - 2013 Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.libraries.formula.parser;
/**
* Creation-Date: 03.11.2006, 18:57:23
*
* @author Thomas Morgner
*/
public class ParserTools {
private ParserTools() {
}
public static String stripReferenceQuote( String s ) {
if ( s.length() < 2 ) {
return s;
}
final String strippedBraces = s.substring( 1, s.length() - 1 );
if ( strippedBraces.length() <= 2 ) {
return strippedBraces;
}
if ( strippedBraces.startsWith( "\"" ) && strippedBraces.endsWith( "\"" ) ) {
return stripQuote( strippedBraces );
}
return strippedBraces;
}
/**
* Unconditionally removes the first and last character of the given string and also unquotes the quoted
* double-quotes.
*
* @param s the string to be stripped.
* @return the stripped string.
*/
public static String stripQuote( final String s ) {
boolean encounteredQuote = false;
final StringBuffer b = new StringBuffer( s.length() - 2 );
final int size = s.length() - 1;
for ( int i = 1; i < size; i++ ) {
final char c = s.charAt( i );
if ( encounteredQuote ) {
if ( c == '"' ) {
encounteredQuote = false;
continue;
}
}
if ( c == '"' ) {
encounteredQuote = true;
} else {
encounteredQuote = false;
}
b.append( c );
}
return b.toString();
}
}