/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.studio.openldap.config.acl.sourceeditor;
import org.apache.directory.studio.ldapbrowser.core.BrowserCoreConstants;
import org.eclipse.jface.text.formatter.IFormattingStrategy;
import org.eclipse.jface.text.source.ISourceViewer;
/**
* This class implements the formatting strategy for the OpenLDAP ACL Editor.
* <ul>
* <li>New line before the "by" keyword
* </ul>
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class OpenLdapAclFormattingStrategy implements IFormattingStrategy
{
/** The Constant NEWLINE. */
public static final String NEWLINE = BrowserCoreConstants.LINE_SEPARATOR;
/** The source viewer. */
private ISourceViewer sourceViewer;
/**
* Creates a new instance of OpenLdapAclFormattingStrategy.
*
* @param sourceViewer the source viewer
*/
public OpenLdapAclFormattingStrategy( ISourceViewer sourceViewer )
{
this.sourceViewer = sourceViewer;
}
/**
* {@inheritDoc}
*/
public String format( String content, boolean isLineStart, String indentation, int[] positions )
{
String oldContent = sourceViewer.getDocument().get();
String newContent = internFormat( oldContent );
sourceViewer.getDocument().set( newContent );
return null;
}
/**
* {@inheritDoc}
*/
public void formatterStarts( String initialIndentation )
{
}
/**
* {@inheritDoc}
*/
public void formatterStops()
{
}
private String internFormat( String content )
{
StringBuffer sb = new StringBuffer();
// Flag to track if we are within a quoted string
boolean inQuotedString = false;
// Flag to track if a new line was started
boolean newLineStarted = true;
// Char index
int i = 0;
int contentLength = content.length();
while ( i < contentLength )
{
char currentChar = content.charAt( i );
// Tracking quotes
if ( currentChar == '"' )
{
inQuotedString = !inQuotedString;
}
else if ( newLineStarted && ( ( currentChar == '\n' ) || ( currentChar == '\r' ) ) )
{
// Compress multiple newlines
i++;
continue;
}
// Checking if we're not in a quoted text
if ( !inQuotedString )
{
// Getting the next char (if available)
char nextChar = 0;
if ( ( i + 1 ) < contentLength )
{
nextChar = content.charAt( i + 1 );
}
// Checking if we have the "by" keyword
if ( ( !newLineStarted ) && ( currentChar == 'b' ) && ( nextChar == 'y' ) )
{
sb.append( NEWLINE );
newLineStarted = true;
}
else
{
// Tracking new line
newLineStarted = ( ( currentChar == '\n' ) || ( currentChar == '\r' ) );
}
}
sb.append( currentChar );
i++;
}
return sb.toString();
}
}