make the symbol importer script faster

.gitignore

@@ -36,3 +36,6 @@ ignore/
 ignored/
 *.ignore.*
 *.ignored.*
+
+# rust target folders
+tools/*/target/

tools/batch-demangle/.gitignore

@@ -0,0 +1 @@
+/target

tools/batch-demangle/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "rb3-batch-demangle"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+clap = { version = "4.4.18", features = ["derive"] }
+cwdemangle = { git = "https://github.com/encounter/cwdemangle", version = "0.1.7" }

tools/batch-demangle/src/main.rs

@@ -0,0 +1,29 @@
+use clap::Parser;
+use cwdemangle::*;
+use std::fs::read_to_string;
+
+#[derive(Parser)]
+struct Args {
+    input: String,
+}
+
+fn main() {
+    let args = Args::parse();
+    let f = read_to_string(args.input).unwrap();
+
+    for line in f.lines() {
+        let parts = line.split(" ").collect::<Vec<_>>();
+        let sym = parts[0];
+        let demangled = match demangle(parts[0], &DemangleOptions {
+            omit_empty_parameters: false
+        }) {
+            Some(x) => x,
+            None => "@@@@@".into()
+        };
+
+        let addr_idx = parts[2].find("0x").unwrap();
+        let addr = &parts[2][addr_idx..addr_idx + 10];
+
+        println!("{sym}|||{demangled}|||{addr}");
+    }
+}