better zsh compatibility

rust_to_flutter.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 
@@ -9,8 +9,8 @@ if [ "$#" -ne 2 ]; then
 fi
 
 # Convert to absolute paths
-RUST_PROJECT_FOLDER=$(cd "$1" && pwd)
-FLUTTER_PROJECT_FOLDER=$(cd "$2" && pwd)
+RUST_PROJECT_FOLDER="$(cd "$1" && pwd)"
+FLUTTER_PROJECT_FOLDER="$(cd "$2" && pwd)"
 
 # Supported targets for Android
 ANDROID_ARCHS=("arm64-v8a" "armeabi-v7a" "x86_64" "x86")
@@ -18,7 +18,7 @@ ANDROID_TARGETS=("aarch64-linux-android" "armv7-linux-androideabi" "x86_64-linux
 IOS_TARGETS=("aarch64-apple-ios" "x86_64-apple-ios")
 
 # Check if on macOS for iOS targets
-if [[ "$OSTYPE" == "darwin"* ]]; then
+if [[ "${OSTYPE:-}" == "darwin"* ]]; then
     INCLUDE_IOS_TARGETS=true
 else
     INCLUDE_IOS_TARGETS=false
@@ -26,11 +26,11 @@ else
 fi
 
 # Enter the Rust project folder
-cd "$RUST_PROJECT_FOLDER" || exit
+cd "$RUST_PROJECT_FOLDER" || exit 1
 
 # Function to check and install missing targets
 install_missing_targets() {
-    for target in "${@}"; do
+    for target in "$@"; do
         if ! rustup target list --installed | grep -q "$target"; then
             echo "Installing target: $target"
             rustup target add "$target"
@@ -64,11 +64,10 @@ if [ "$INCLUDE_IOS_TARGETS" = true ]; then
     done
 fi
 
-
 # Copy compiled libraries to Flutter project for Android
 for i in "${!ANDROID_ARCHS[@]}"; do
-    arch=${ANDROID_ARCHS[$i]}
-    target=${ANDROID_TARGETS[$i]}
+    arch="${ANDROID_ARCHS[$i]}"
+    target="${ANDROID_TARGETS[$i]}"
     RELEASE_DIR="target/$target/release"
     LIB_FILE=$(find "$RELEASE_DIR" -maxdepth 1 -name "lib*.so" | head -n 1)
 
@@ -76,7 +75,7 @@ for i in "${!ANDROID_ARCHS[@]}"; do
         DEST_DIR="$FLUTTER_PROJECT_FOLDER/android/app/src/main/jniLibs/$arch"
         mkdir -p "$DEST_DIR"
         cp "$LIB_FILE" "$DEST_DIR/"
-        echo "Copied $arch library to $2/android/app/src/main/jniLibs/$arch"
+        echo "Copied $arch library to $DEST_DIR"
     else
         echo "No .so files found for $arch in $RELEASE_DIR"
     fi