org.opencypher.tools.io.LineNumberingOutput Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of grammar Show documentation

openCypher Grammar

There is a newer version: 1.0.0-M01

/*
 * Copyright (c) 2015-2016 "Neo Technology,"
 * Network Engine for Objects in Lund AB [http://neotechnology.com]
 *
 * Licensed 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.opencypher.tools.io;

class LineNumberingOutput implements Output
{
    private final Output output;
    boolean newLine = true;
    private int lineNo;

    LineNumberingOutput( Output output )
    {
        this.output = output;
    }

    @Override
    public Output append( char x )
    {
        if ( newLine )
        {
            output.format( "%5d: ", lineNo );
            newLine = false;
        }
        output.append( x );
        if ( x == '\n' )
        {
            newLine = true;
            lineNo++;
        }
        return this;
    }
}