use apple_sdk::SdkSearch instead of xcrun

youknowone#4

bindgen/src/sdk.rs

@@ -1,6 +1,6 @@
 // TODO: change this module to thin wrapper of apple_sdk::SdkPath and related utilities
 
-use apple_sdk::Platform;
+use apple_sdk::{AppleSdk, Platform, SimpleSdk};
 use std::{
     path::{Path, PathBuf},
     str::FromStr,
@@ -12,6 +12,8 @@ use thiserror::Error;
 pub enum SdkPathError {
     #[error("apple_sdk::Error")]
     AppleSdkError(apple_sdk::Error),
+    #[error("sdk not found")]
+    AppleSdkNotFound,
     #[error("path is not sdk path")]
     InvalidPath(PathBuf),
     #[error("xcrun lookup failed")]
@@ -31,19 +33,15 @@ impl TryFrom<&Platform> for SdkPath {
     type Error = SdkPathError;
 
     fn try_from(platform: &Platform) -> Result<Self, Self::Error> {
-        use std::process::Command;
-        let output = Command::new("xcrun")
-            .args(&[
-                "--sdk",
-                &platform.filesystem_name().to_lowercase(),
-                "--show-sdk-path",
-            ])
-            .output()
-            .map_err(SdkPathError::XcrunError)?
-            .stdout;
-        let path = std::str::from_utf8(&output)
-            .expect("invalid output from `xcrun`")
-            .trim_end();
+        let sdks = apple_sdk::SdkSearch::default()
+            .platform(platform.clone())
+            .search::<SimpleSdk>()
+            .map_err(SdkPathError::AppleSdkError)?;
+        let sdk = sdks
+            .into_iter()
+            .next()
+            .ok_or(SdkPathError::AppleSdkNotFound)?;
+        let path = sdk.path();
         Ok(Self(PathBuf::from(path)))
     }
 }