1 files changed, 152 insertions, 0 deletions
diff --git a/server/frob/char.ts b/server/frob/char.ts
new file mode 100644
index 0000000..e0cb5f3
--- /dev/null
+++ b/server/frob/char.ts
@@ -0,0 +1,152 @@
+class CharParser {
+    private char_line =
+    "^" +
+    "(?<char_id>[0-9]+)\t" +
+    "(?<account_id>[0-9]+),(?<char_num>[0-9]+)\t" +
+    "(?<name>[^\t]+)\t" +
+    "(?<species>[0-9]+),(?<base_level>[0-9]+),(?<job_level>[0-9]+)\t" +
+    "(?<base_exp>[0-9]+),(?<job_exp>[0-9]+),(?<zeny>[0-9]+)\t" +
+    "(?<hp>[0-9]+),(?<max_hp>[0-9]+),(?<sp>[0-9]+),(?<max_sp>[0-9]+)\t" +
+    "(?<str>[0-9]+),(?<agi>[0-9]+),(?<vit>[0-9]+),(?<int>[0-9]+),(?<dex>[0-9]+),(?<luk>[0-9]+)\t" +
+    "(?<status_point>[0-9]+),(?<skill_point>[0-9]+)\t" +
+    "(?<option>[0-9]+),(?<karma>[0-9]+),(?<manner>[0-9]+)\t" +
+    "(?<party_id>[0-9]+),[0-9]+,[0-9]+\t" +
+    "(?<hair>[0-9]+),(?<hair_color>[0-9]+),(?<clothes_color>[0-9]+)\t" +
+    "(?<weapon>[0-9]+),(?<shield>[0-9]+),(?<head_top>[0-9]+),(?<head_mid>[0-9]+),(?<head_bottom>[0-9]+)\t" +
+    "(?<last_map>[^,]+),(?<last_x>[0-9]+),(?<last_y>[0-9]+)\t" +
+    "(?<save_map>[^,]+),(?<save_x>[0-9]+),(?<save_y>[0-9]+),(?<partner_id>[0-9]+)\t" +
+    "(?<sex>[FMNS])\t" + // <= ignore S to ignore server accounts
+    "(?<items>([0-9]+,(?<nameid>[0-9]+),(?<amount>[0-9]+),(?<equip>[0-9]+),[0-9]+,[0-9]+,[0-9]+,[0-9]+,[0-9]+,[0-9]+,[0-9]+,[0-9]+ )*)\t" + // inventory
+    "\t" + // cart
+    "(?<skills>((?<skill_id>[0-9]+),(?<skill_lv>[0-9]+) )*)\t" +
+    "(?<variables>((?<var_name>[^,]+),(?<value>[-0-9]+) )*)\t" + // some chars have negative variables (overflows)
+    "$";
+    private char_items_line = "[0-9]+,(?<nameid>[0-9]+),(?<amount>[0-9]+),(?<equip>[0-9]+),[0-9]+,[0-9]+,[0-9]+,[0-9]+,[0-9]+,[0-9]+,[0-9]+,[0-9]+ ";
+    private char_regex: RegExp;
+    private char_regex_items: RegExp;
+
+    constructor () {
+        this.char_regex = new RegExp(this.char_line);
+        this.char_regex_items = new RegExp(this.char_items_line, "g");
+    }
+
+    private parseLine (line: string) {
+        const match = this.char_regex.exec(line);
+
+        if (!(match instanceof Object) || !Reflect.has(match, "groups")) {
+            console.error("line does not match the char regex:", line);
+            throw new SyntaxError();
+        }
+
+        const groups = (match as any).groups;
+        let items = [];
+
+        if (groups.items.length > 1) {
+            let match_items = this.char_regex_items.exec(groups.items);
+
+            while (match_items !== null) {
+                items.push((match_items as any).groups);
+                match_items = this.char_regex_items.exec(groups.items);
+            }
+        }
+
+        groups.items = items;
+        return groups;
+    }
+
+    public async * readDB () {
+        const decoder = new TextDecoder("utf-8");
+        console.info("\nwalking through athena.txt...");
+        const file = await Deno.open("world/save/athena.txt");
+        const buf = new Uint8Array(1024);
+        let accumulator = "";
+
+        while (true) {
+            const { nread, eof } = await Deno.read(file.rid, buf);
+
+            if (eof) {
+                break;
+            }
+
+            const str = decoder.decode(buf);
+
+            for (let c of str) {
+                if (c === "\n") {
+                    if (accumulator.length === 14) {
+                        // this is the newid line
+                        break;
+                    }
+                    yield this.parseLine(accumulator);
+                    accumulator = "";
+                } else {
+                    accumulator += c;
+                }
+            }
+        }
+    }
+}
+
+class CharWriter {
+    private file;
+    private highest: number = 0;
+    private encoder;
+
+    constructor () {
+        try {
+            Deno.removeSync("world/save/athena.txt.tmp");
+        } catch {
+            // ignore this
+        }
+        this.file = Deno.openSync("world/save/athena.txt.tmp", "a+");
+        this.encoder = new TextEncoder();
+    }
+
+    async write (char: any) {
+        let line =
+        `${char.char_id}\t` +
+        `${char.account_id},${char.char_num}\t` +
+        `${char.name}\t` +
+        `${char.species},${char.base_level},${char.job_level}\t` +
+        `${char.base_exp},${char.job_exp},${char.zeny}\t` +
+        `${char.hp},${char.max_hp},${char.sp},${char.max_sp}\t` +
+        `${char.str},${char.agi},${char.vit},${char.int},${char.dex},${char.luk}\t` +
+        `${char.status_point},${char.skill_point}\t` +
+        `${char.option},${char.karma},${char.manner}\t` +
+        `${char.party_id},0,0\t` +
+        `${char.hair},${char.hair_color},${char.clothes_color}\t` +
+        `${char.weapon},${char.shield},${char.head_top},${char.head_mid},${char.head_bottom}\t` +
+        `${char.last_map},${char.last_x},${char.last_y}\t` +
+        `${char.save_map},${char.save_x},${char.save_y},${char.partner_id}\t` +
+        `${char.sex}\t`;
+
+        for (let item of char.items) {
+            line += `0,${item.nameid},${item.amount},${item.equip},1,0,0,0,0,0,0,0 `;
+        }
+
+        line += `\t`; // end of items
+        line += `\t`; // cart
+        line += `${char.skills}\t`;
+        line += `${char.variables}\t`;
+        line += `\n`;
+
+        await Deno.write(this.file.rid, this.encoder.encode(line));
+
+        if (+char.char_id > this.highest) {
+            this.highest = +char.char_id;
+        }
+    }
+
+    async finalize() {
+        console.info("appending %newid%...");
+        await Deno.write(this.file.rid, this.encoder.encode(`${this.highest + 1}\t%newid%\n`));
+        this.file.close();
+        console.info("overwriting athena.txt...");
+        await Deno.rename("world/save/athena.txt", "world/save/athena.txt_pre-frob");
+        await Deno.rename("world/save/athena.txt.tmp", "world/save/athena.txt");
+    }
+}
+
+export {
+    CharParser,
+    CharWriter,
+}