org.apache.pdfbox.cos.COSNumber Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of pdfbox Show documentation
Show all versions of pdfbox Show documentation
The Apache PDFBox library is an open source Java tool for working with PDF documents.
/*
* 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.pdfbox.cos;
import java.io.IOException;
/**
* This class represents an abstract number in a PDF document.
*
* @author Ben Litchfield
*/
public abstract class COSNumber extends COSBase
{
/**
* @deprecated Use the {@link COSInteger#ZERO} constant instead
*/
@Deprecated
public static final COSInteger ZERO = COSInteger.ZERO;
/**
* @deprecated Use the {@link COSInteger#ONE} constant instead
*/
@Deprecated
public static final COSInteger ONE = COSInteger.ONE;
/**
* This will get the float value of this number.
*
* @return The float value of this object.
*/
public abstract float floatValue();
/**
* This will get the double value of this number.
*
* @return The double value of this number.
*/
public abstract double doubleValue();
/**
* This will get the integer value of this number.
*
* @return The integer value of this number.
*/
public abstract int intValue();
/**
* This will get the long value of this number.
*
* @return The long value of this number.
*/
public abstract long longValue();
/**
* This factory method will get the appropriate number object.
*
* @param number The string representation of the number.
*
* @return A number object, either float or int.
*
* @throws IOException If the string is not a number.
*/
public static COSNumber get( String number ) throws IOException
{
if (number.length() == 1)
{
char digit = number.charAt(0);
if ('0' <= digit && digit <= '9')
{
return COSInteger.get(digit - '0');
}
else if (digit == '-' || digit == '.')
{
// See https://issues.apache.org/jira/browse/PDFBOX-592
return COSInteger.ZERO;
}
else
{
throw new IOException("Not a number: " + number);
}
}
else if (number.indexOf('.') == -1 && (number.toLowerCase().indexOf('e') == -1))
{
try
{
if (number.charAt(0) == '+')
{
return COSInteger.get(Long.parseLong(number.substring(1)));
}
return COSInteger.get(Long.parseLong(number));
}
catch( NumberFormatException e )
{
// might be a huge number, see PDFBOX-3116
return new COSFloat(number);
}
}
else
{
return new COSFloat(number);
}
}
}