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<?xml version="1.0" encoding="UTF-8"?> | ||
<classpath> | ||
<classpathentry kind="src" path="src"/> | ||
<classpathentry kind="src" path="test"/> | ||
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/> | ||
<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/4"/> | ||
<classpathentry kind="output" path="bin"/> | ||
</classpath> |
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.settings |
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<?xml version="1.0" encoding="UTF-8"?> | ||
<projectDescription> | ||
<name>jna-lua</name> | ||
<comment></comment> | ||
<projects> | ||
</projects> | ||
<buildSpec> | ||
<buildCommand> | ||
<name>org.eclipse.jdt.core.javabuilder</name> | ||
<arguments> | ||
</arguments> | ||
</buildCommand> | ||
</buildSpec> | ||
<natures> | ||
<nature>org.eclipse.jdt.core.javanature</nature> | ||
</natures> | ||
</projectDescription> |
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package com.dafrito.lua; | ||
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public final class LuaStringUtil { | ||
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public static final LuaStringUtil INSTANCE=new LuaStringUtil(); | ||
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private LuaStringUtil() { | ||
} | ||
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public String escape(String s) { | ||
StringBuilder sb = new StringBuilder(s); | ||
escape(sb); | ||
return sb.toString(); | ||
} | ||
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public void escape(StringBuilder sb) { | ||
for (int i = 0; i < sb.length(); i++) { | ||
String r=null; | ||
switch (sb.charAt(i)) { | ||
case '\u0007': r = "\\a"; break; | ||
case '\b': r = "\\b"; break; | ||
case '\f': r = "\\f"; break; | ||
case '\n': r = "\\n"; break; | ||
case '\r': r = "\\r"; break; | ||
case '\t': r = "\\t"; break; | ||
case '\u000b': r = "\\v"; break; | ||
case '\\': r = "\\\\"; break; | ||
case '"': r = "\\\""; break; | ||
} | ||
if(r != null) { | ||
sb.replace(i, i+1, r); | ||
i += r.length(); | ||
} | ||
} | ||
} | ||
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public String quote(String s) { | ||
StringBuilder sb = new StringBuilder(s); | ||
quote(sb); | ||
return sb.toString(); | ||
} | ||
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public void quote(StringBuilder sb) { | ||
escape(sb); | ||
sb.insert(0, '"'); | ||
sb.append('"'); | ||
} | ||
} |
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package com.dafrito.lua.script; | ||
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import java.util.AbstractMap; | ||
import java.util.Collection; | ||
import java.util.Map; | ||
import java.util.Set; | ||
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import javax.script.Bindings; | ||
import javax.script.SimpleBindings; | ||
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public class LuaBindings extends SimpleBindings implements Bindings { | ||
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@Override | ||
public Set<java.util.Map.Entry<String, Object>> entrySet() { | ||
// TODO Auto-generated method stub | ||
return null; | ||
} | ||
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@Override | ||
public boolean containsKey(Object key) { | ||
// TODO Auto-generated method stub | ||
return false; | ||
} | ||
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@Override | ||
public Object get(Object key) { | ||
// TODO Auto-generated method stub | ||
return null; | ||
} | ||
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@Override | ||
public Object put(String name, Object value) { | ||
// TODO Auto-generated method stub | ||
return null; | ||
} | ||
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@Override | ||
public void putAll(Map<? extends String, ? extends Object> toMerge) { | ||
// TODO Auto-generated method stub | ||
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} | ||
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@Override | ||
public Object remove(Object key) { | ||
// TODO Auto-generated method stub | ||
return null; | ||
} | ||
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@Override | ||
public void clear() { | ||
// TODO Auto-generated method stub | ||
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} | ||
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@Override | ||
public boolean containsValue(Object value) { | ||
// TODO Auto-generated method stub | ||
return false; | ||
} | ||
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@Override | ||
public boolean isEmpty() { | ||
// TODO Auto-generated method stub | ||
return false; | ||
} | ||
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@Override | ||
public Set<String> keySet() { | ||
// TODO Auto-generated method stub | ||
return null; | ||
} | ||
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@Override | ||
public int size() { | ||
// TODO Auto-generated method stub | ||
return 0; | ||
} | ||
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@Override | ||
public Collection<Object> values() { | ||
// TODO Auto-generated method stub | ||
return null; | ||
} | ||
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} |
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package com.dafrito.lua.script; | ||
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import java.io.Reader; | ||
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import javax.script.AbstractScriptEngine; | ||
import javax.script.Bindings; | ||
import javax.script.ScriptContext; | ||
import javax.script.ScriptEngine; | ||
import javax.script.ScriptEngineFactory; | ||
import javax.script.ScriptException; | ||
import javax.script.SimpleBindings; | ||
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public class LuaScriptEngine extends AbstractScriptEngine implements ScriptEngine { | ||
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private final LuaScriptEngineFactory factory; | ||
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public LuaScriptEngine(LuaScriptEngineFactory luaScriptEngineFactory) { | ||
this.factory = luaScriptEngineFactory; | ||
} | ||
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public LuaScriptEngine() { | ||
this(null); | ||
} | ||
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@Override | ||
public Bindings createBindings() { | ||
return new SimpleBindings(); | ||
} | ||
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@Override | ||
public Object eval(String script, ScriptContext context) | ||
throws ScriptException { | ||
return 2; | ||
} | ||
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@Override | ||
public Object eval(Reader reader, ScriptContext context) | ||
throws ScriptException { | ||
// TODO Auto-generated method stub | ||
return null; | ||
} | ||
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@Override | ||
public ScriptEngineFactory getFactory() { | ||
return this.factory; | ||
} | ||
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} |
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package com.dafrito.lua.script; | ||
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import java.util.Arrays; | ||
import java.util.Collections; | ||
import java.util.HashMap; | ||
import java.util.List; | ||
import java.util.Map; | ||
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import javax.script.ScriptEngine; | ||
import javax.script.ScriptEngineFactory; | ||
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import com.dafrito.lua.LuaStringUtil; | ||
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public class LuaScriptEngineFactory implements ScriptEngineFactory { | ||
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private final List<String> extensions; | ||
private final List<String> mimeTypes; | ||
private final Map<String, String> parameters; | ||
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public LuaScriptEngineFactory() { | ||
this.extensions = Collections.unmodifiableList(Arrays.asList("lua", "Lua")); | ||
this.mimeTypes = Collections.unmodifiableList(Arrays.asList("application/x-lua", "text/x-lua")); | ||
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Map<String, String> params = new HashMap<String, String>(); | ||
params.put(ScriptEngine.ENGINE, this.getEngineName()); | ||
params.put(ScriptEngine.ENGINE_VERSION, this.getEngineVersion()); | ||
params.put(ScriptEngine.LANGUAGE, this.getLanguageName()); | ||
params.put(ScriptEngine.LANGUAGE_VERSION, this.getLanguageVersion()); | ||
params.put(ScriptEngine.NAME, this.extensions.get(0)); | ||
this.parameters = Collections.unmodifiableMap(params); | ||
} | ||
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@Override | ||
public Object getParameter(String k) { | ||
return this.parameters.get(k); | ||
} | ||
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@Override | ||
public String getEngineName() { | ||
return "JSR 223 JNA-Lua Engine"; | ||
} | ||
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@Override | ||
public String getEngineVersion() { | ||
return "1.0"; | ||
} | ||
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@Override | ||
public List<String> getExtensions() { | ||
return this.extensions; | ||
} | ||
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@Override | ||
public String getLanguageName() { | ||
return "Lua"; | ||
} | ||
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@Override | ||
public String getLanguageVersion() { | ||
return "5.1"; | ||
} | ||
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@Override | ||
public String getMethodCallSyntax(String arg0, String arg1, String... arg2) { | ||
return "process:execute(a, b)"; | ||
} | ||
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@Override | ||
public List<String> getMimeTypes() { | ||
return this.mimeTypes; | ||
} | ||
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@Override | ||
public List<String> getNames() { | ||
return this.extensions; | ||
} | ||
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@Override | ||
public String getOutputStatement(String v) { | ||
StringBuilder sb = new StringBuilder(v); | ||
LuaStringUtil.INSTANCE.quote(sb); | ||
return "print(" + sb.toString() + ")"; | ||
} | ||
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@Override | ||
public String getProgram(String... arg0) { | ||
return "a = 1\nreturn b\n"; | ||
} | ||
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@Override | ||
public ScriptEngine getScriptEngine() { | ||
return new LuaScriptEngine(this); | ||
} | ||
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} |
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package com.dafrito.lua; | ||
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import static org.junit.Assert.*; | ||
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import org.junit.Before; | ||
import org.junit.Test; | ||
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public class LuaStringUtilTest { | ||
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private LuaStringUtil u; | ||
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@Before | ||
public void setup() { | ||
this.u = LuaStringUtil.INSTANCE; | ||
} | ||
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@Test | ||
public void testSingleLetterEscapes() throws Exception { | ||
assertEquals("\\\"", u.escape("\"")); | ||
} | ||
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@Test | ||
public void testEscape() throws Exception { | ||
assertEquals("Trivial string is unchanged", "notime", u.escape("notime")); | ||
assertEquals("String with quotes is escaped", "\\\"notime\\\"", u.escape("\"notime\"")); | ||
} | ||
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@Test | ||
public void testQuote() throws Exception { | ||
assertEquals("Trivial string is simply quoted", "\"notime\"", u.quote("notime")); | ||
assertEquals("String with quotes is escaped", "\" \\\" \"", u.quote(" \" ")); | ||
} | ||
} |
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