migrated unpacking to rust zstd to conform with droplet

@drop/droplet now packs with zstd, so converts unpacker.rs to use zstd

package.json

@@ -20,5 +20,6 @@
     "vite": "^5.3.1",
     "vue-tsc": "^2.0.22",
     "@tauri-apps/cli": ">=2.0.0"
-  }
+  },
+  "packageManager": "yarn@1.22.22+sha512.a6b2f7906b721bba3d67d4aff083df04dad64c399707841b7acf00f6b133b7ac24255f2652fa22ae3534329dc6180534e98d17432037ff6fd140556e2bb3137e"
 }

src-tauri/Cargo.lock

@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "addr2line"
@@ -278,6 +278,8 @@ version = "1.1.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e8d9e0b4957f635b8d3da819d0db5603620467ecf1f692d22a8c2717ce27e6d8"
 dependencies = [
+ "jobserver",
+ "libc",
  "shlex",
 ]
 
@@ -689,7 +691,7 @@ dependencies = [
  "tauri",
  "tauri-build",
  "tauri-plugin-shell",
- "xz2",
+ "zstd",
 ]
 
 [[package]]
@@ -1535,6 +1537,15 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"
 
+[[package]]
+name = "jobserver"
+version = "0.1.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48d1dbcbbeb6a7fec7e059840aa538bd62aaccf972c7346c4d9d2059312853d0"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "js-sys"
 version = "0.3.70"
@@ -1663,17 +1674,6 @@ version = "0.4.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a7a70ba024b9dc04c27ea2f0c0548feb474ec5c54bba33a7f72f873a39d07b24"
 
-[[package]]
-name = "lzma-sys"
-version = "0.1.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fda04ab3764e6cde78b9974eec4f779acaba7c4e84b36eca3cf77c581b85d27"
-dependencies = [
- "cc",
- "libc",
- "pkg-config",
-]
-
 [[package]]
 name = "mac"
 version = "0.1.1"
@@ -4307,15 +4307,6 @@ dependencies = [
  "pkg-config",
 ]
 
-[[package]]
-name = "xz2"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "388c44dc09d76f1536602ead6d325eb532f5c122f17782bd57fb47baeeb767e2"
-dependencies = [
- "lzma-sys",
-]
-
 [[package]]
 name = "zerocopy"
 version = "0.7.35"
@@ -4336,3 +4327,31 @@ dependencies = [
  "quote",
  "syn 2.0.79",
 ]
+
+[[package]]
+name = "zstd"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcf2b778a664581e31e389454a7072dab1647606d44f7feea22cd5abb9c9f3f9"
+dependencies = [
+ "zstd-safe",
+]
+
+[[package]]
+name = "zstd-safe"
+version = "7.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "54a3ab4db68cea366acc5c897c7b4d4d1b8994a9cd6e6f841f8964566a419059"
+dependencies = [
+ "zstd-sys",
+]
+
+[[package]]
+name = "zstd-sys"
+version = "2.0.13+zstd.1.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38ff0f21cfee8f97d94cef41359e0c89aa6113028ab0291aa8ca0038995a95aa"
+dependencies = [
+ "cc",
+ "pkg-config",
+]

src-tauri/Cargo.toml

@@ -23,5 +23,5 @@ tauri-plugin-shell = "2.0.0"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 ciborium = "0.2.2"
-xz2 = "0.1.7"
+zstd = "0.13.2"
 rayon = "1.10.0"

src-tauri/src/unpacker.rs

@@ -4,12 +4,11 @@ use serde::Deserialize;
 use std::{
     collections::HashMap,
     fs::{create_dir_all, File},
-    io::{self, BufReader, Error, Seek},
+    io::{self, BufReader, Error, Seek, Write},
     os::unix::fs::PermissionsExt,
     path::Path,
 };
 use tauri::Runtime;
-use xz2::bufread::XzDecoder;
 
 #[derive(Deserialize)]
 struct ManifestChunk {
@@ -28,31 +27,6 @@ struct Manifest {
     record: HashMap<String, ManifestRecord>,
 }
 
-fn generate_permissions(permissions: Vec<bool>) -> u32 {
-    // Base 8
-    let mut perms: u32 = 0;
-
-    // Read
-    if permissions[0] {
-        perms += 4;
-    }
-
-    // Write
-    if permissions[1] {
-        perms += 2;
-    }
-
-    // Execute
-    if permissions[2] {
-        perms += 1;
-    }
-
-    perms *= 8 * 8;
-    perms += 4 * 8 + 4;
-
-    return perms;
-}
-
 pub fn unpack() -> Result<(), Error> {
     let chunk_size: u64 = 1024 * 1024 * 16;
 
@@ -80,12 +54,13 @@ pub fn unpack() -> Result<(), Error> {
             let chunk_handle = File::open(chunk_path).unwrap();
 
             let chunk_reader = BufReader::new(chunk_handle);
-            let mut decompressor = XzDecoder::new(chunk_reader);
+            let mut decompressor = zstd::Decoder::new(chunk_reader).unwrap();
 
             let offset = u64::try_from(chunk.index).unwrap() * chunk_size;
             file_handle.seek(io::SeekFrom::Start(offset)).unwrap();
 
             io::copy(&mut decompressor, &mut file_handle).unwrap();
+            file_handle.flush().unwrap();
         }
     });