unfinished

index.js

+const fs = require('fs');
+const sqlite3 = require('sqlite3').verbose();
+//const iconv = require('iconv-lite');
+const convert = require('encoding').convert
+
+const dbfile = process.argv[3];
+const fpath = process.argv[2];
+
+var all_songs = [];
+
+const courseTypes = {
+	"0": "easy",
+	"1": "normal",
+	"2": "hard",
+	"3": "oni",
+	"4": "ura",
+	"edit": "ura"
+}
+
+//console.log("Reading: " + fpath);
+const category_array = fs.readdirSync(fpath);
+
+for (var category_raw of category_array) { 
+	const category = parseInt(category_raw);
+	const category_path = fpath + "/" + category;
+	//console.log("Reading: " + category_path);
+	const songs = fs.readdirSync(category_path);
+	for (var song_raw of songs) { 
+		const song_id = parseInt(song_raw);
+		const tja_path = category_path + "/" + song_id + "/main.tja"
+		//console.log("Reading: " + tja_path);
+		const tja_text = fs.readFileSync(tja_path, { encoding: "utf8" })
+		//var buf = Buffer.from(tja_base64, "base64");
+		//var encoded_buf = convert(buf, "UTF-8", "SHIFT-JIS");
+		//const tja_text = encoded_buf.toString('utf8');
+		const tja_lines = tja_text.split("\n");
+		var res = {
+			difficulty: {
+				easy: null,
+				normal: null,
+				hard: null,
+				oni: null,
+				ura: null,
+			},
+			song_id: song_id,
+			category: category
+		}
+		var courseName = "oni";
+		for (var line of tja_lines) { 
+			if (line.indexOf(":") > 0) { 
+				const line_ = line.trim();
+				const line__ = convert(line_, "UTF-8", "SHIFT-JIS").toString('utf8');
+				const temp = line__.split(":");
+				const key = temp[0].toLowerCase();
+				const value = temp[1];
+				//console.log("Find value: " + key +" --> " + value);
+				switch (key) {
+					case "title":
+						res.title = value;
+						break;
+					case "subtitle":
+						res.subtitle = value;
+						break;
+					case "course":
+						const diff = value.toLowerCase();
+						if(diff in courseTypes){
+							courseName = courseTypes[diff];
+						}else{
+							courseName = diff;
+						}
+						break;
+					case "level": 
+						res.difficulty[courseName] = parseInt(value);
+						break;
+				}
+			}
+		}
+		all_songs.push(res);
+	}
+}
+
+console.log(JSON.stringify(all_songs, null, 2))