158 lines
3.8 KiB
Java
158 lines
3.8 KiB
Java
/*
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* This file is part of ComputerCraft - http://www.computercraft.info
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* Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
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* Send enquiries to dratcliffe@gmail.com
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*/
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package dan200.computercraft.core.computer;
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import dan200.computercraft.ComputerCraft;
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import dan200.computercraft.api.filesystem.IMount;
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import dan200.computercraft.api.filesystem.IWritableMount;
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import dan200.computercraft.core.filesystem.FileMount;
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import dan200.computercraft.core.filesystem.JarMount;
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import dan200.computercraft.core.filesystem.MemoryMount;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.UncheckedIOException;
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import java.net.MalformedURLException;
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import java.net.URISyntaxException;
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import java.net.URL;
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/**
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* A very basic environment.
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*/
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public class BasicEnvironment implements IComputerEnvironment
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{
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private final IWritableMount mount;
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public BasicEnvironment()
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{
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this( new MemoryMount() );
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}
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public BasicEnvironment( IWritableMount mount )
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{
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this.mount = mount;
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}
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@Override
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public int assignNewID()
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{
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return 0;
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}
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@Override
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public IWritableMount createSaveDirMount( String path, long space )
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{
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return mount;
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}
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@Override
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public int getDay()
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{
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return 0;
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}
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@Override
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public double getTimeOfDay()
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{
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return 0;
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}
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@Override
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public boolean isColour()
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{
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return true;
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}
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@Override
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public long getComputerSpaceLimit()
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{
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return ComputerCraft.computerSpaceLimit;
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}
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@Override
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public String getHostString()
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{
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return "ComputerCraft ${version} (Test environment)";
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}
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@Override
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public IMount createResourceMount( String domain, String subPath )
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{
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return createMount( ComputerCraft.class, "data/" + domain + "/" + subPath, "main" );
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}
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@Override
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public InputStream createResourceFile( String domain, String subPath )
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{
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return ComputerCraft.class.getClassLoader().getResourceAsStream( "data/" + domain + "/" + subPath );
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}
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public static IMount createMount( Class<?> klass, String path, String fallback )
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{
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File file = getContainingFile( klass );
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if( file.isFile() )
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{
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try
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{
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return new JarMount( file, path );
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}
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catch( IOException e )
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{
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throw new UncheckedIOException( e );
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}
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}
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else
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{
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File wholeFile = new File( file, path );
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// If we don't exist, walk up the tree looking for resource folders
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File baseFile = file;
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while( baseFile != null && !wholeFile.exists() )
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{
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baseFile = baseFile.getParentFile();
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wholeFile = new File( baseFile, "resources/" + fallback + "/" + path );
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}
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if( !wholeFile.exists() ) throw new IllegalStateException( "Cannot find ROM mount at " + file );
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return new FileMount( wholeFile, 0 );
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}
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}
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private static File getContainingFile( Class<?> klass )
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{
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String path = klass.getProtectionDomain().getCodeSource().getLocation().getPath();
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int bangIndex = path.indexOf( "!" );
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// Plain old file, so step up from dan200.computercraft.
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if( bangIndex < 0 ) return new File( path );
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path = path.substring( 0, bangIndex );
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URL url;
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try
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{
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url = new URL( path );
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}
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catch( MalformedURLException e )
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{
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throw new IllegalStateException( e );
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}
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try
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{
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return new File( url.toURI() );
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}
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catch( URISyntaxException e )
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{
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return new File( url.getPath() );
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}
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}
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}
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