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Migrate code from ImageJ
Migrated from: https://github.com/imagej/imagej/tree/imagej-2.0.0-beta-7.9/plugins/scripting/scripting-jruby
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‎LICENSE.txt‎

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Copyright (c) 2008 - 2014, Board of Regents of the University of
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Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
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Institute of Molecular Cell Biology and Genetics.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.

‎src/main/java/org/scijava/plugins/scripting/jruby/JRubyBindings.java‎

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/*
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* #%L
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* JSR-223-compliant JRuby scripting language plugin.
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* %%
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* Copyright (C) 2008 - 2014 Board of Regents of the University of
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* Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
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* Institute of Molecular Cell Biology and Genetics.
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* %%
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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* #L%
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*/
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package org.scijava.plugins.scripting.jruby;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import javax.script.Bindings;
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import org.jruby.Ruby;
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import org.jruby.exceptions.RaiseException;
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import org.jruby.internal.runtime.GlobalVariables;
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import org.jruby.javasupport.JavaUtil;
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/**
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* A {@link Bindings} wrapper around JRuby's local variables.
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*
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* @author Johannes Schindelin
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*/
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public class JRubyBindings implements Bindings {
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private Ruby interpreter;
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public JRubyBindings(final Ruby interpreter) {
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this.interpreter = interpreter;
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}
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@Override
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public int size() {
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return interpreter.getGlobalVariables().getNames().size();
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}
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@Override
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public boolean isEmpty() {
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return size() == 0;
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}
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@Override
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public boolean containsKey(Object key) {
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return get(key) != null;
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}
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@Override
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public boolean containsValue(Object value) {
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for (final Object value2 : values()) {
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if (value.equals(value2)) return true;
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}
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return false;
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}
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@Override
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public Object get(Object key) {
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try {
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return interpreter.getGlobalVariables().get((String)key);
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} catch (Error e) {
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return null;
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}
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}
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@Override
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public Object put(String key, Object value) {
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final Object result = get(key);
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try {
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interpreter.getGlobalVariables().set(key, JavaUtil.convertJavaToRuby(interpreter, value));
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} catch (Error e) {
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// ignore
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}
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return result;
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}
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@Override
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public Object remove(Object key) {
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final Object result = get(key);
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if (result != null) interpreter.getGlobalVariables().clear((String)key);
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return result;
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}
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@Override
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public void putAll(Map<? extends String, ? extends Object> toMerge) {
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for (final Entry<? extends String, ? extends Object> entry : toMerge.entrySet()) {
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put(entry.getKey(), entry.getValue());
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}
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}
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@Override
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public void clear() {
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final GlobalVariables vars = interpreter.getGlobalVariables();
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for (final String name : new ArrayList<String>(vars.getNames())) try {
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if (!name.startsWith("$") || (name.length() > 1 && "=<.-".contains(name.substring(1, 2)))) continue;
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vars.clear(name);
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} catch (final RaiseException e) {
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// ignore
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}
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}
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@Override
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public Set<String> keySet() {
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return new HashSet<String>(interpreter.getGlobalVariables().getNames());
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}
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@Override
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public Collection<Object> values() {
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final List<Object> result = new ArrayList<Object>();
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for (final Object name : interpreter.getGlobalVariables().getNames()) try {
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result.add(get(name));
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} catch (Error exc) {
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// ignore for now
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}
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return result;
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}
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@Override
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public Set<Entry<String, Object>> entrySet() {
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final Set<Entry<String, Object>> result = new HashSet<Entry<String, Object>>();
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for (final String name : interpreter.getGlobalVariables().getNames()) {
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result.add(new Entry<String, Object>() {
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@Override
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public String getKey() {
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return name;
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}
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@Override
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public Object getValue() {
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return get(name);
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}
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@Override
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public Object setValue(Object value) {
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throw new UnsupportedOperationException();
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}
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});
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}
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return result;
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}
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}

‎src/main/java/org/scijava/plugins/scripting/jruby/JRubyScriptEngine.java‎

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/*
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* #%L
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* JSR-223-compliant JRuby scripting language plugin.
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* %%
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* Copyright (C) 2008 - 2014 Board of Regents of the University of
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* Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
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* Institute of Molecular Cell Biology and Genetics.
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* %%
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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* #L%
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*/
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package org.scijava.plugins.scripting.jruby;
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import java.io.PrintStream;
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import java.io.Reader;
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import java.io.Writer;
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import javax.script.ScriptContext;
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import javax.script.ScriptEngine;
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import javax.script.ScriptException;
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import org.jruby.Ruby;
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import org.jruby.RubyInstanceConfig;
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import org.jruby.embed.io.ReaderInputStream;
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import org.jruby.embed.io.WriterOutputStream;
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import org.scijava.script.AbstractScriptEngine;
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/**
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* A Ruby interpreter based on JRuby.
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*
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* @author Johannes Schindelin
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*/
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public class JRubyScriptEngine extends AbstractScriptEngine
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{
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private Ruby interpreter;
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public JRubyScriptEngine() {
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interpreter = Ruby.newInstance();
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engineScopeBindings = new JRubyBindings(interpreter);
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}
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@Override
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public Object eval(final String script) throws ScriptException {
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setup();
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try {
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return interpreter.evalScriptlet(script);
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}
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catch (final Exception e) {
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throw new ScriptException(e);
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}
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}
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@Override
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public Object eval(final Reader reader) throws ScriptException {
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setup();
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try {
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final String filename = getString(ScriptEngine.FILENAME);
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interpreter.runFromMain(new ReaderInputStream(reader), filename == null ? "*none*" : filename);
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return this;
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}
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catch (final Exception e) {
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throw new ScriptException(e);
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}
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}
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protected void setup() {
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final RubyInstanceConfig config = interpreter.getInstanceConfig();
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final ScriptContext context = getContext();
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final Reader reader = context.getReader();
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if (reader != null) {
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config.setInput(new ReaderInputStream(reader));
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}
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final Writer writer = context.getWriter();
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if (writer != null) {
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config.setOutput(new PrintStream(new WriterOutputStream(writer)));
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}
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final Writer errorWriter = context.getErrorWriter();
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if (errorWriter != null) {
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config.setError(new PrintStream(new WriterOutputStream(errorWriter)));
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}
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}
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private String getString(final String key) {
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Object result = get(key);
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return result == null ? null : result.toString();
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}
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}

‎src/main/java/org/scijava/plugins/scripting/jruby/JRubyScriptLanguage.java‎

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/*
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* #%L
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* JSR-223-compliant JRuby scripting language plugin.
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* %%
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* Copyright (C) 2008 - 2014 Board of Regents of the University of
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* Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
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* Institute of Molecular Cell Biology and Genetics.
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* %%
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* Redistribution and use in source and binary forms, with or without
10+
* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
14+
* 2. Redistributions in binary form must reproduce the above copyright notice,
15+
* this list of conditions and the following disclaimer in the documentation
16+
* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19+
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20+
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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* #L%
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*/
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package org.scijava.plugins.scripting.jruby;
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import javax.script.ScriptEngine;
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import org.scijava.plugin.Plugin;
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import org.scijava.script.AdaptedScriptLanguage;
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import org.scijava.script.ScriptLanguage;
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/**
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* An adapter of the JRuby interpreter to ImageJ's scripting interfaces.
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*
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* @author Johannes Schindelin
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* @see ScriptEngine
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*/
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@Plugin(type = ScriptLanguage.class)
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public class JRubyScriptLanguage extends AdaptedScriptLanguage {
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public JRubyScriptLanguage() {
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super("jruby");
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}
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@Override
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public String getLanguageName() {
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// NB: Must override, or else the name is "ruby" in small case.
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return "Ruby";
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}
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@Override
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public ScriptEngine getScriptEngine() {
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// TODO: Consider adapting the wrapped ScriptEngineFactory's ScriptEngine.
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return new JRubyScriptEngine();
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}
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}

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