add json cmdid and gc from PacketOpcodes.

this is useful later to update proto and delete unused proto.

op.js

@@ -0,0 +1,121 @@
+// Removed useless files, to speed up build process and make it clearer.
+const path = require("path");
+const fs = require("fs");
+const readline = require("readline");
+
+// cmdid current version
+const read_cmdid = "cmdid.csv";
+const read_cmdid_output = "cmdid.json";
+const read_cmdid_output_gc = "cmdid_gc.json";
+
+console.log(process.cwd());
+
+//(TODO: add input file)
+// folder gc auto-generated proto
+const folder_proto_gc_gen =
+  "../Grasscutter-Yuuki/src/generated/main/java/emu/grasscutter/net/proto/";
+// file PacketOpcodes currently in use
+const read_cmdid_gc =
+  "../Grasscutter-Yuuki/src/main/java/emu/grasscutter/net/packet/PacketOpcodes.java";
+
+//const read_cmdid = fs.readFileSync("cmdid.csv");
+//const read_packetopcodes = fs.readFileSync("PacketOpcodes.java");
+
+var data = [];
+var data_gc = [];
+
+var index_file_gen = 0;
+var index_file_cmdid = 0;
+var index_cmdid_gc = 0;
+var index_cmdid_gc_out = 0;
+function check_gen() {
+  fs.readdir(folder_proto_gc_gen, function (err, files) {
+    //handling error
+    if (err) {
+      return console.log("Unable to scan directory: " + err);
+    }
+    files.forEach(function (file) {
+      index_file_gen++;
+    });
+    console.log("file proto gen: " + index_file_gen);
+  });
+}
+
+// gen json file cmdid
+function get_cmdid_json() {
+  const inputStreamcmdid = fs.createReadStream(read_cmdid);
+  var lineReadercmdid = readline.createInterface({
+    input: inputStreamcmdid,
+    terminal: false,
+  });
+  lineReadercmdid.on("line", function (line) {
+    var config = line.split(",");
+    var subdata = new Object();
+    subdata["name"] = config[0];
+    subdata["id"] = parseInt(config[1]);
+    data.push(subdata);
+    index_file_cmdid++;
+  });
+  lineReadercmdid.on("close", function () {
+    console.log("found cmd id " + index_file_cmdid);
+    var strNotes = JSON.stringify(data, null, 4);
+    fs.writeFile(read_cmdid_output, strNotes, "utf8", function (err) {
+      if (err) {
+        console.log("An error occured while writing JSON Object to File.");
+        return console.log(err);
+      }
+      console.log("JSON file has been saved.");
+    });
+  });
+}
+
+function get_cmdid_gc() {
+  const inputStreamcmdid = fs.createReadStream(read_cmdid_gc);
+  var lineReadercmdid = readline.createInterface({
+    input: inputStreamcmdid,
+    terminal: false,
+  });
+  lineReadercmdid.on("line", function (line) {
+    var config = line.split(" = ");
+    var name = config[0];
+    var id = parseInt(config[1]);
+    if (name.includes("public static final int")) {
+      name = name.replace("\tpublic static final int", "");
+      // skip 0 ?
+      if(id == 0){
+        return;
+      }
+      var subdata = new Object();
+      subdata["name"] = name;
+      subdata["id"] = id;
+      data_gc.push(subdata);
+      //console.log(name);
+      index_cmdid_gc++;
+    } else {
+      index_cmdid_gc_out++;
+    }
+    /*    
+    var subdata = new Object();
+    subdata["name"] = config[0];
+    subdata["id"] = parseInt(config[1]);
+    data.push(subdata);
+    */
+  });
+  lineReadercmdid.on("close", function () {
+    console.log(
+      "found cmd id " + index_cmdid_gc + " | no need " + index_cmdid_gc_out
+    );
+    var strNotes = JSON.stringify(data_gc, null, 4);
+    fs.writeFile(read_cmdid_output_gc, strNotes, "utf8", function (err) {
+      if (err) {
+        console.log("An error occured while writing JSON Object to File.");
+        return console.log(err);
+      }
+      console.log("JSON file has been saved.");
+    });
+  });
+}
+
+get_cmdid_gc();
+//get_cmdid_json();
+//check_gen();