feat: Iterate over a directory of banks

Wwise actually provides a directory that may contain multiple sound
banks, rather than just the path to a single file.

Cargo.lock

@@ -2,6 +2,12 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "anyhow"
+version = "1.0.57"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08f9b8508dccb7687a1d6c4ce66b2b0ecef467c94667de27d8d7fe1f8d2a9cdc"
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -96,5 +102,6 @@ checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 name = "wwise_fix"
 version = "0.1.0"
 dependencies = [
+ "anyhow",
  "tempfile",
 ]

Cargo.toml

@@ -6,4 +6,5 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+anyhow = "1.0.57"
 tempfile = "3.3.0"

src/main.rs

@@ -1,8 +1,14 @@
+use anyhow::bail;
+use anyhow::Context;
+use anyhow::Result;
 use tempfile::NamedTempFile;
 
+use std::env;
+use std::ffi::{OsStr, OsString};
+use std::fs;
 use std::fs::File;
 use std::io::{self, Read, Seek, SeekFrom, Write};
-use std::{env, fs};
+use std::path::Path;
 
 // Offset within the bank file to the version number within the BKHD section.
 // TODO: Check if this may change.
@@ -10,38 +16,76 @@ const OFFSET_VERSION_NUMBER: u64 = 52;
 // Retrieved by philipdestroyer by inspecting the game's sound banks in memory at runtime.
 const BANK_VERSION: [u8; 4] = [0x28, 0xbc, 0x11, 0x92];
 
-fn main() {
-    let path = env::args().nth(1).expect("Path to sound bank required");
-
+fn fix_file<P>(path: P) -> Result<()>
+where
+    P: AsRef<Path>,
+{
     let tmp_path = {
-        let mut f = File::open(&path).expect("failed to open sound bank file");
-        let mut tmp = NamedTempFile::new().expect("failed to open temporary file");
+        let mut f = File::open(&path).with_context(|| "failed to open sound bank file")?;
+        let mut tmp = NamedTempFile::new().with_context(|| "failed to open temporary file")?;
 
         // Copy everything until the version number
         io::copy(
             &mut std::io::Read::by_ref(&mut f).take(OFFSET_VERSION_NUMBER),
             &mut tmp,
         )
-        .expect("failed to copy to tempfile");
+        .with_context(|| "failed to copy to tempfile")?;
 
         // Write the hard coded version number
-        tmp.write(&BANK_VERSION).expect("failed to write version number");
+        tmp.write(&BANK_VERSION)
+            .with_context(|| "failed to write version number")?;
 
         // Copy the rest of the file
         f.seek(SeekFrom::Start(OFFSET_VERSION_NUMBER + 4))
-            .expect("failed to skip to rest of content");
-        io::copy(&mut f, &mut tmp).expect("failed to copy to tempfile");
+            .with_context(|| "failed to skip to rest of content")?;
+        io::copy(&mut f, &mut tmp).with_context(|| "failed to copy to tempfile")?;
         tmp.into_temp_path()
     };
 
     if let Err(err) = fs::rename(&tmp_path, &path) {
-        let tmp_path = tmp_path.keep().expect("failed to persist temporary file");
-        eprintln!(
-            "failed to rename temporary file to override the sound bank {}.\n\
-                Please manually copy the file from {} to {}",
+        let tmp_path = tmp_path
+            .keep()
+            .with_context(|| "failed to persist temporary file")?;
+        bail!(
+            "failed to rename temporary file to override the sound bank: {}!\n\
+                Please manually copy the file from {} to {}.",
             err,
             tmp_path.display(),
-            path
+            path.as_ref().display()
         );
     }
+
+    Ok(())
+}
+
+fn main() -> Result<()> {
+    let dir = env::args()
+        .nth(1)
+        .expect("Please specify a directory containing .wwise_bank files");
+
+    let mut results = Vec::new();
+
+    for entry in fs::read_dir(dir)? {
+        let entry = entry?;
+        let path = entry.path();
+
+        if path.is_file() && path.extension().and_then(OsStr::to_str) == Some("wwise_bank") {
+            let res = fix_file(&path);
+            results.push((path, res));
+        }
+    }
+
+    for (path, res) in results.iter() {
+        let name = path
+            .file_name()
+            .map(OsStr::to_os_string)
+            .unwrap_or_else(|| OsString::from(".."));
+
+        match res {
+            Ok(_) => println!("Fixed: {}", name.to_string_lossy()),
+            Err(err) => eprintln!("Failed: {}. Error: {}", name.to_string_lossy(), err),
+        }
+    }
+
+    Ok(())
 }