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Clean up luaj scripting engine; allow multiple lua library files

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gnosygnu
2016-10-16 13:00:37 -04:00
parent c1d84249e1
commit d07b3e1493
21 changed files with 156 additions and 179 deletions
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26
400_xowa/src/gplx/core/scripts/Gfo_script_engine.java Normal file
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/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.core.scripts; import gplx.*; import gplx.core.*;
public interface Gfo_script_engine {
void Load_script(Io_url url);
Object Get_object(String obj_name);
void Put_object(String name, Object obj);
Object Eval_script(String script);
Object Invoke_method(Object obj, String func, Object... args);
Object Invoke_function(String func, Object... args);
}

31
400_xowa/src/gplx/core/scripts/Gfo_script_engine_.java Normal file
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/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.core.scripts; import gplx.*; import gplx.core.*;
public class Gfo_script_engine_ {
public static Gfo_script_engine New_by_key(String key) {
if (String_.Eq(key, "javascript.java")) return new Gfo_script_engine__javascript();
else if (String_.Eq(key, "lua.luaj")) return new Gfo_script_engine__luaj();
else if (String_.Eq(key, "noop")) return new Gfo_script_engine__noop();
else throw Err_.new_unhandled(key);
}
public static Gfo_script_engine New_by_ext(String ext) {
if (String_.Eq(ext, ".js")) return new Gfo_script_engine__javascript();
else if (String_.Eq(ext, ".lua")) return new Gfo_script_engine__luaj();
else throw Err_.new_unhandled(ext);
}
}

72
400_xowa/src/gplx/core/scripts/Gfo_script_engine__javascript.java Normal file
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/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.core.scripts; import gplx.*; import gplx.core.*;
import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
public class Gfo_script_engine__javascript implements Gfo_script_engine {
private final ScriptEngine engine;
private final Invocable invk;
public Gfo_script_engine__javascript() {
ScriptEngineManager manager = new ScriptEngineManager();
this.engine = manager.getEngineByName("JavaScript");
this.invk = (Invocable)engine;
}
public void Load_script(Io_url url) {
try {engine.eval(Io_mgr.Instance.LoadFilStr(url));}
catch (Exception e) {
System.out.println(e.getMessage());
Gfo_usr_dlg_.Instance.Warn_many("", "", "failed to load_script; url=~{0} err=~{1}", url, Err_.Message_lang(e));
}
}
public void Put_object(String key, Object val) {
engine.put(key, val);
}
public Object Get_object(String obj_name) {
try {return engine.get(obj_name);}
catch (Exception e) {
System.out.println(e.getMessage());
Gfo_usr_dlg_.Instance.Warn_many("", "", "failed to get object; obj_name=~{0} err=~{1}", obj_name, Err_.Message_lang(e));
return null;
}
}
public Object Eval_script(String script) {
try {return engine.eval(script);}
catch (Exception e) {
System.out.println(e.getMessage());
Gfo_usr_dlg_.Instance.Warn_many("", "", "failed to eval; script=~{0} err=~{1}", script, Err_.Message_lang(e));
return null;
}
}
public Object Invoke_method(Object obj, String func, Object... args) {
try {return invk.invokeMethod(obj, func, args);}
catch (Exception e) {
System.out.println(e.getMessage());
Gfo_usr_dlg_.Instance.Warn_many("", "", "failed to invoke method; method=~{0} err=~{1}", func, Err_.Message_lang(e));
return null;
}
}
public Object Invoke_function(String func, Object... args) {
try {return invk.invokeFunction(func, args);}
catch (Exception e) {
System.out.println(e.getMessage());
Gfo_usr_dlg_.Instance.Warn_many("", "", "failed to invoke method; method=~{0} err=~{1}", func, Err_.Message_lang(e));
return null;
}
}
}

99
400_xowa/src/gplx/core/scripts/Gfo_script_engine__luaj.java Normal file
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/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.core.scripts; import gplx.*; import gplx.core.*;
import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.SimpleBindings;
import javax.script.Bindings;
import javax.script.Compilable;
import javax.script.CompiledScript;
import org.luaj.vm2.LuaFunction;
import org.luaj.vm2.LuaValue;
import org.luaj.vm2.lib.jse.CoerceJavaToLua;
import org.luaj.vm2.lib.jse.CoerceLuaToJava;
public class Gfo_script_engine__luaj implements Gfo_script_engine {
private final ScriptEngine engine;
private final List_adp script_list = List_adp_.New();
private SimpleBindings bindings;
public Gfo_script_engine__luaj() {
ScriptEngineManager manager = new ScriptEngineManager();
this.engine = manager.getEngineByName("luaj");
}
public void Load_script(Io_url url) {
try {
// create itm and add it to the list of all scripts; list is not used now, but may be used in future
String src = Io_mgr.Instance.LoadFilStr(url);
script_list.Add(new Gfo_script_itm__luaj(url, src));
// compile the item into the "bindings" object; this allows scripts to share one "sandbox-space", allowing funcs in one script to call funcs in another
CompiledScript compiled = ((Compilable) engine).compile(src);
if (bindings == null) bindings = new SimpleBindings();
compiled.eval(bindings);
}
catch (Exception e) {
Warn("failed to load_script; url=~{0} err=~{1}", url, Err_.Message_lang(e));
}
}
public void Put_object(String key, Object val) {
engine.put(key, val);
}
public Object Get_object(String obj_name) {
try {return engine.get(obj_name);}
catch (Exception e) {
Warn("failed to get object; obj_name=~{0} err=~{1}", obj_name, Err_.Message_lang(e));
return null;
}
}
public Object Eval_script(String script) {
try {return engine.eval(script);}
catch (Exception e) {
Warn("", "", "failed to eval; script=~{0} err=~{1}", script, Err_.Message_lang(e));
return null;
}
}
public Object Invoke_method(Object obj, String func, Object... args) {
throw Err_.new_unimplemented_w_msg("luaj does not support invocable interface"); // NOTE: cannot support with Get_object, b/c Get_object needs obj_name, and only "obj" exists
}
public Object Invoke_function(String func, Object... args) {
try {
LuaValue arg = CoerceJavaToLua.coerce(args[0]);
LuaFunction lfunc = (LuaFunction)bindings.get(func);
LuaValue rv = lfunc.call(arg);
return CoerceLuaToJava.coerce(rv, Object.class);
}
catch (Exception e) {
Gfo_script_engine__luaj.Warn("", "", "failed to invoke method; method=~{0} err=~{1}", func, Err_.Message_lang(e));
return null;
}
}
public static void Warn(String fmt, Object... args) {
String msg = Gfo_usr_dlg_.Instance.Warn_many("", "", fmt, args);
System.out.println(msg);
}
}
class Gfo_script_itm__luaj {
public Gfo_script_itm__luaj(Io_url url, String src) {
this.url = url;
this.src = src;
}
public Io_url Url() {return url;} private final Io_url url;
public String Src() {return src;} private final String src;
}

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400_xowa/src/gplx/core/scripts/Gfo_script_engine__noop.java Normal file
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/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.core.scripts; import gplx.*; import gplx.core.*;
public class Gfo_script_engine__noop implements Gfo_script_engine {
public void Load_script(Io_url url) {}
public Object Get_object(String obj_name) {return null;}
public void Put_object(String name, Object obj) {}
public Object Eval_script(String script) {return null;}
public Object Invoke_method(Object obj, String func, Object... args) {return null;}
public Object Invoke_function(String func, Object... args) {return null;}
}