com.argot.compiler.ArgotCompilerLoader Maven / Gradle / Ivy

Go to download
/*
 * Copyright (c) 2003-2019, Live Media Pty. Ltd.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice, this list of
 *     conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice, this list of
 *     conditions and the following disclaimer in the documentation and/or other materials
 *     provided with the distribution.
 *  3. Neither the name of Live Media nor the names of its contributors may be used to endorse
 *     or promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.argot.compiler;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;

import com.argot.TypeException;
import com.argot.TypeLibrary;
import com.argot.TypeLibraryLoader;
import com.argot.dictionary.Dictionary;

public class ArgotCompilerLoader implements TypeLibraryLoader {
    private final InputStream _input;
    private final String _resource;
    private byte[] _dictionaryData;

    public ArgotCompilerLoader(final String resource) {
        _resource = resource;
        _input = null;
        _dictionaryData = null;
    }

    public ArgotCompilerLoader(final String resource, final InputStream input) {
        _resource = resource;
        _input = input;
        _dictionaryData = null;
    }

    private InputStream getDictionaryStream(final String location) {
        if (_input != null) {
            return _input;
        }

        final File dictionaryFile = new File(location);
        if (dictionaryFile.exists()) {
            try {
                return new FileInputStream(dictionaryFile);
            } catch (final FileNotFoundException e) {
                // ignore and drop through.
            }
        }

        InputStream is = getClass().getResourceAsStream(location);
        if (is != null) {
            return is;
        }

        final ClassLoader cl = this.getClass().getClassLoader();
        is = cl.getResourceAsStream(location);
        if (is == null) {
            return null;
        }
        return is;
    }

    @Override
    public void load(final TypeLibrary library) throws TypeException {
        final URL[] paths = null;

        final InputStream is = getDictionaryStream(_resource);
        if (is == null) {
            throw new TypeException("Failed to load:" + _resource);
        }

        try {
            final ArgotCompiler compiler = new ArgotCompiler(is, paths);
            compiler.setLoadCommon(true);

            final ByteArrayOutputStream out = new ByteArrayOutputStream();

            compiler.compileDictionary(out);

            _dictionaryData = out.toByteArray();
        } catch (final IOException e) {
            e.printStackTrace();
            throw new TypeException("Failed to load argot source file: " + _resource, e);
        } catch (final ArgotCompilerException e) {
            e.printErrors(System.err);
            throw new TypeException("Failed to load argot source file: " + _resource, e);
        }

        try {
            Dictionary.readDictionary(library, new ByteArrayInputStream(_dictionaryData));
        } catch (final TypeException e) {
            throw new TypeException("Error loading dictionary: " + _resource, e);
        } catch (final IOException e) {
            throw new TypeException("Error loading dictionary: " + _resource, e);
        }

        bind(library);
    }

    public byte[] getDictionaryData() throws TypeException {
        if (_dictionaryData == null) {
            throw new TypeException("ArgotCompilerLoader - Source not compiled");
        }
        return _dictionaryData;
    }

    public void bind(final TypeLibrary library) throws TypeException {

    }

    @Override
    public String getName() {
        return _resource;
    }

}