96 lines
2.0 KiB
Java
96 lines
2.0 KiB
Java
package core.lua;
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import java.io.IOException;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.List;
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import java.util.Vector;
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import java.util.stream.Stream;
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import org.luaj.vm2.Globals;
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import org.luaj.vm2.LuaValue;
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import org.luaj.vm2.Varargs;
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import org.luaj.vm2.lib.jse.JsePlatform;
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// To promote flexibility, plugins are lua file with predefined callbacks.
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// They are executed between the initial built-in preprocessing and the command parsing.
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// This class wraps the lua layer - provides all the processing and function calls to the lua binding.
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public class Plugin
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{
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public Path filepath;
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public String contents;
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private Globals globals;
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private LuaValue func_plugin;
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public Plugin(Path filepath)
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{
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this.filepath = filepath;
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StringBuilder contentBuilder = new StringBuilder();
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try
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{
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Stream<String> stream = Files.lines(filepath, StandardCharsets.UTF_8);
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stream.forEach(str -> contentBuilder.append(str).append("\n"));
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stream.close();
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contents = contentBuilder.toString();
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globals = JsePlatform.standardGlobals();
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globals.load(contents).call();
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func_plugin = globals.get("plugin");
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}
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catch (IOException e)
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{
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PluginLog.error(e.getMessage());
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}
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}
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public List<String> run(String args, PluginUser user)
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{
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try
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{
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List<String> outputs = new Vector<String>();
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LuaValue res = func_plugin.call(LuaValue.valueOf(args), user.asLua());
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if(!res.isnil())
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{
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if(res.istable())
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{
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LuaValue key = LuaValue.NIL;
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while (true)
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{
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Varargs n = res.next(key);
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key = n.arg1();
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if (key.isnil())
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break;
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LuaValue value = n.arg(2);
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outputs.add(value.toString());
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}
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}
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else
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{
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System.out.println("Loc2.5 " + res.toString());
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outputs.add(res.toString());
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}
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}
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if(outputs.size() <= 0)
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return null;
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return outputs;
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}
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catch(Exception e)
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{
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PluginLog.error("Failed to run plugin from file " + filepath);
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}
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return null;
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}
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}
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