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263 lines (245 loc) · 5.71 KB
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/*
* Openize.HEIC
* Copyright (c) 2024-2025 Openize Pty Ltd.
*
* This file is part of Openize.HEIC.
*
* Openize.HEIC is available under Openize license, which is
* available along with Openize.HEIC sources.
*/
package openize.io;
import java.io.*;
import java.nio.file.Path;
public class IOFileStream implements IOStream
{
private final RandomAccessFile file;
/**
* <p>
* Open/Create a file with an {@code mode} access.
* </p>
* @param path The file path to open/create.
* @param mode The file access mode.
* @throws IOException File does not exist.
*/
public IOFileStream(String path, IOMode mode)
{
try
{
this.file = new RandomAccessFile(path, mode.getMode());
}
catch (FileNotFoundException e)
{
throw new IOException(e.getMessage(), e);
}
}
/**
* <p>
* Open/Create a file with an {@code mode} access.
* </p>
* @param file The file path to open/create.
* @param mode The file access mode.
* @throws IOException File does not exist.
*/
public IOFileStream(File file, IOMode mode)
{
try
{
this.file = new RandomAccessFile(file, mode.getMode());
}
catch (FileNotFoundException e)
{
throw new IOException(e.getMessage(), e);
}
}
/**
* <p>
* Open/Create a file with an {@code mode} access.
* </p>
* @param path The file path to open/create.
* @param mode The file access mode.
* @throws IOException File does not exist.
*/
public IOFileStream(Path path, IOMode mode)
{
try
{
this.file = new RandomAccessFile(path.toFile(), mode.getMode());
}
catch (FileNotFoundException e)
{
throw new IOException(e.getMessage(), e);
}
}
/**
* <p>
* Create an instance of IOStream over RandomAccessFile.
* </p>
* @param file The file.
*/
public IOFileStream(RandomAccessFile file)
{
this.file = file;
}
@Override
public int read(byte[] dst)
{
if (dst.length == 0)
{
return 0;
}
try
{
return this.file.read(dst);
}
catch (java.io.IOException e)
{
throw new IOException(e.getMessage(), e);
}
}
@Override
public int read(byte[] dst, int offset, int count)
{
if (count == 0)
{
return 0;
}
try
{
return this.file.read(dst, offset, count);
}
catch (java.io.IOException e)
{
throw new IOException(e.getMessage(), e);
}
}
@Override
public void write(byte[] data)
{
if (data.length == 0)
{
return;
}
try
{
this.file.write(data);
}
catch (java.io.IOException e)
{
throw new IOException(e.getMessage(), e);
}
}
@Override
public void write(byte[] data, int offset, int count)
{
try
{
this.file.write(data, offset, count);
}
catch (java.io.IOException e)
{
throw new IOException(e.getMessage(), e);
}
}
@Override
public long setPosition(long newPosition)
{
try
{
final long oldPosition = file.getFilePointer();
if (oldPosition != newPosition)
{
file.seek(newPosition);
}
return oldPosition;
}
catch (java.io.IOException e)
{
throw new IOException(e.getMessage(), e);
}
}
@Override
public long getPosition()
{
try
{
return file.getFilePointer();
}
catch (java.io.IOException e)
{
throw new IOException(e.getMessage(), e);
}
}
@Override
public long getLength()
{
try
{
return file.length();
}
catch (java.io.IOException e)
{
throw new IOException(e.getMessage(), e);
}
}
@Override
public void setLength(long newLength)
{
try
{
if (file.length() != newLength)
{
file.setLength(newLength);
}
}
catch (java.io.IOException e)
{
throw new IOException(e.getMessage(), e);
}
}
@Override
public void close() throws IOException
{
try
{
this.file.close();
}
catch (java.io.IOException e)
{
throw new IOException(e.getMessage(), e);
}
}
@Override
public void seek(long newPosition, IOSeekMode mode)
{
try
{
switch (mode)
{
case BEGIN:
if (file.getFilePointer() != newPosition)
{
file.seek(newPosition);
}
break;
case CURRENT:
if (newPosition == 0)
{
return;
}
file.seek(file.getFilePointer() + newPosition);
break;
case END:
final long pos = file.length() + newPosition;
if (pos != file.getFilePointer())
{
file.seek(pos);
}
break;
}
}
catch (java.io.IOException e)
{
throw new IOException(e.getMessage(), e);
}
}
}