org.apache.fontbox.cff.CFFDataInput Maven / Gradle / Ivy
/*
* 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.fontbox.cff;
import java.io.IOException;
/**
* This is specialized DataInput. It's used to parse a CFFFont.
*
* @author Villu Ruusmann
*/
public class CFFDataInput extends DataInput
{
/**
* Constructor.
* @param buffer the buffer to be read
*/
public CFFDataInput(byte[] buffer)
{
super(buffer);
}
/**
* Read one single Card8 value from the buffer.
* @return the card8 value
* @throws IOException if an error occurs during reading
*/
public int readCard8() throws IOException
{
return readUnsignedByte();
}
/**
* Read one single Card16 value from the buffer.
* @return the card16 value
* @throws IOException if an error occurs during reading
*/
public int readCard16() throws IOException
{
return readUnsignedShort();
}
/**
* Read the offset from the buffer.
* @param offSize the given offsize
* @return the offset
* @throws IOException if an error occurs during reading
*/
public int readOffset(int offSize) throws IOException
{
int value = 0;
for (int i = 0; i < offSize; i++)
{
value = value << 8 | readUnsignedByte();
}
return value;
}
/**
* Read the offsize from the buffer.
* @return the offsize
* @throws IOException if an error occurs during reading
*/
public int readOffSize() throws IOException
{
return readUnsignedByte();
}
/**
* Read a SID from the buffer.
* @return the SID
* @throws IOException if an error occurs during reading
*/
public int readSID() throws IOException
{
return readUnsignedShort();
}
}