// This Source Code is in the Public Domain per: http://litesoft.org/License.txt
package org.litesoft.core.util;

import org.litesoft.commonfoundation.typeutils.*;

public class LineSource
{
    private String[] mLines;
    private int mIndex = -1;

    public LineSource( String[] pLines )
    {
        mLines = (pLines != null) ? pLines : new String[0];

        advance();
    }

    public int getCurrentLineOffset()
    {
        return mIndex;
    }

    public boolean hasCurrentLine()
    {
        return (mIndex < mLines.length);
    }

    public String getCurrentLine()
    {
        return hasCurrentLine() ? mLines[mIndex] : null;
    }

    public boolean advance()
    {
        while ( hasCurrentLine() )
        {
            mIndex++;
            if ( hasCurrentLine() )
            {
                if ( !Strings.isBlank( mLines[mIndex] ) )
                {
                    return true;
                }
            }
        }
        return false;
    }
}