1 files changed, 128 insertions, 0 deletions
diff --git a/server/frob/party.ts b/server/frob/party.ts
new file mode 100644
index 0000000..cdc0580
--- /dev/null
+++ b/server/frob/party.ts
@@ -0,0 +1,128 @@
+class PartyParser {
+    private party_line =
+    "^" +
+    "(?<party_id>[0-9]+)\t" +
+    "(?<name>[^\t]*)\t" + // bug: name can be empty
+    "(?<exp_share>[01]),(?<item_share>(?:[01]|65535))\t" + // bug: item share can be 0xFFFF
+    "(?<members>((?<account_id>[0-9]+),(?<leader>[01])\t(?<char_name>[^\t]+)\t)*)" +
+    "$";
+    private member_line = "(?<account_id>[0-9]+),(?<leader>[01])\t(?<char_name>[^\t]+)\t";
+    private party_regex: RegExp;
+    private party_regex_members: RegExp;
+    private encoder;
+
+    constructor () {
+        this.party_regex = new RegExp(this.party_line);
+        this.party_regex_members = new RegExp(this.member_line, "g");
+        this.encoder = new TextEncoder();
+    }
+
+    private parseLine (line: string) {
+        const match = this.party_regex.exec(line);
+
+        if (!(match instanceof Object) || !Reflect.has(match, "groups")) {
+            console.error("\nline does not match the regex:", line);
+            throw new SyntaxError();
+        }
+
+        const groups = (match as any).groups;
+        let members = [];
+
+        if (groups.members.length > 1) {
+            let match_members = this.party_regex_members.exec(groups.members);
+
+            while (match_members !== null) {
+                members.push((match_members as any).groups);
+                match_members = this.party_regex_members.exec(groups.members);
+            }
+        }
+
+        if (+groups.item_share === 65535) {
+            groups.item_share = 1; // old bug that was fixed in tmwa but not in the db
+        }
+
+        groups.members = members;
+
+        if (groups.name.length == 0) {
+            console.warn(`\rdiscarding party ${groups.party_id}: no name                      `);
+            return null;
+        } else if (groups.members.length == 0) {
+            console.warn(`\rdiscarding party ${groups.party_id}: no members                   `);
+            return null;
+        }
+
+        Deno.write(Deno.stdout.rid, this.encoder.encode(`\r⌛ processing members of party ${groups.party_id}...`));
+        return groups;
+    }
+
+    public async * readDB () {
+        const decoder = new TextDecoder("utf-8");
+        console.info("\r                                                          \nwalking through party.txt...");
+        const file = await Deno.open("world/save/party.txt");
+        const buf = new Uint8Array(1024);
+        let accumulator = "";
+
+        while (true) {
+            const nread = await Deno.read(file.rid, buf);
+
+            if (nread === Deno.EOF) {
+                break;
+            }
+
+            const str = decoder.decode(buf);
+
+            if (nread < 1024) {
+                for (let c of str) {
+                    if (c === "\n") {
+                        yield this.parseLine(accumulator);
+                        break;
+                    } else {
+                        accumulator += c;
+                    }
+                }
+                break;
+            }
+
+            for (let c of str) {
+                if (c === "\n") {
+                    yield this.parseLine(accumulator);
+                    accumulator = "";
+                } else {
+                    accumulator += c;
+                }
+            }
+        }
+    }
+}
+
+class PartySQL {
+    private sql;
+
+    constructor (sql) {
+        this.sql = sql;
+    }
+
+    async write (party: any) {
+        if (party === null)
+            return Promise.resolve(false); // we cannot handle duplicate parties
+
+        party.name = this.sql.escape(party.name);
+
+        await this.sql.do("INSERT INTO `party` ?? values?", [
+            ["party_id", "name", "exp_share", "item_share"],
+            [party.party_id, party.name, +party.exp_share, +party.item_share]
+        ]);
+
+        for (const member of party.members) {
+            await this.sql.do("UPDATE `char` SET ?? = ? WHERE ?? = ? AND ?? = ?", [
+                    "party_isleader", +member.leader,
+                    "party_id", +party.party_id,
+                    "account_id", +member.account_id ]);
+        }
+    }
+}
+
+export {
+    PartyParser,
+    PartySQL,
+}