rewrite pal in rust

.devcontainer/devcontainer.json

@@ -22,9 +22,11 @@
 
 	"customizations": {
     "vscode": {
-      "extensions": ["ms-vscode.cpptools-extension-pack"]
+      "extensions": [
+				"ms-vscode.cpptools-extension-pack",
+				"rust-lang.rust-analyzer"]
     }
-  },
+  }
 
 	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
 	// "remoteUser": "root"

Cargo.toml

@@ -23,6 +23,7 @@ targets = []
 
 [dependencies]
 fabric-metadata = { git = "https://github.com/youyuanwu/fabric-metadata.git", rev = "2e6a471c7752148c4dc8d0968c0f1161c2a6c76a"}
+pal = { path = "./crates/fabric/pal" }
 
 [dependencies.windows]
 version = "0.43"

build.rs

@@ -1,28 +1,16 @@
 use std::path::Path;
 
 fn main() {
-    // add link dir for fabric support libs. This is propagated to downstream targets
-    // let dir = String::from("build\\_deps\\fabric_metadata-build\\src");
-    // let package_root = env::var("CARGO_MANIFEST_DIR").unwrap();
-    // let abs_dir = package_root + &dir;
-    // println!(
-    //     "cargo:rustc-link-search=native={}",
-    //     Path::new(&abs_dir).display()
-    // );
-
-        // add link dir for fabric support libs. This is propagated to downstream targets
+    if cfg!(unix) {
+        // Add link dir for fabric libs on linux.
         let dir = String::from("/opt/microsoft/servicefabric/bin/Fabric/Fabric.Code/");
         println!(
             "cargo:rustc-link-search={}",
             Path::new(&dir).display()
         );
-        let dir2 = String::from("/workspaces/service-fabric-rs/bintemp");
-        println!(
-            "cargo:rustc-link-search={}",
-            Path::new(&dir2).display()
-        );
-        // println!("cargo:rustc-link-lib=dylib=FabricCommon");
-        // println!("cargo:rustc-link-lib=dylib=FabricResources");
-        // pal
-        println!("cargo:rustc-link-lib=dylib=fabric_pal");
+
+        // On linux, for windows-rs to work we need have a pal shared lib.
+        // No need to have search dir since it is in the target dir
+        println!("cargo:rustc-link-lib=dylib=fabric_rust_pal");
+    }
 }

crates/fabric/pal/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "pal"
+version = "0.1.0"
+edition = "2021"
+
+
+[lib]
+name = "fabric_rust_pal"
+path = "src/lib.rs"
+crate-type = ["cdylib"]
+
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies.windows]
+version = "0.43"
+features = [
+    "Win32_Foundation"
+]

crates/fabric/pal/src/lib.rs

@@ -0,0 +1,69 @@
+#[allow(
+    non_camel_case_types,
+    non_snake_case,
+    dead_code)]
+
+use std::ffi::c_void;
+
+use windows::core::{HRESULT, PCSTR, PWSTR};
+
+
+#[no_mangle]
+pub unsafe extern "system" fn  GetLastError() -> u32 {
+    0
+}
+
+#[no_mangle]
+pub unsafe extern "system" fn GetProcessHeap() -> isize{
+    0
+}
+
+#[no_mangle]
+pub unsafe  extern "system"  fn HeapAlloc(_heap: isize, _flags: u32, _len: usize) -> *mut c_void{
+    std::ptr::null_mut()
+}
+
+#[no_mangle]
+pub unsafe extern "system"  fn HeapFree(_heap: isize, _flags: u32, _ptr: *const c_void) -> i32{
+    0
+}
+
+#[no_mangle]
+pub unsafe extern "system" fn GetErrorInfo(_reserved: u32, _info: *mut *mut c_void) -> HRESULT{
+    HRESULT(0)
+}
+
+#[no_mangle]
+pub unsafe extern "system" fn SetErrorInfo(_reserved: u32, _info: *const c_void) -> HRESULT{
+    HRESULT(0)
+}
+
+#[no_mangle]
+pub unsafe extern "system" fn LoadLibraryA(_name: PCSTR) -> isize{
+    0
+}
+
+#[no_mangle]
+pub unsafe extern "system" fn FreeLibrary(_library: isize) -> i32{
+    0
+}
+
+#[no_mangle]
+pub unsafe extern "system" fn GetProcAddress(_library: isize, _name: PCSTR) -> *const c_void{
+    std::ptr::null()
+}
+
+#[no_mangle]
+pub unsafe extern "system" fn SysFreeString(_bstr: *const u16){
+
+}
+
+#[no_mangle]
+pub unsafe extern "system" fn SysStringLen(_bstr: *const u16) -> u32{
+    0
+}
+
+#[no_mangle]
+pub unsafe extern "system" fn FormatMessageW(_flags: u32, _source: *const c_void, _code: u32, _lang: u32, _buffer: PWSTR, _len: u32, _args: *const *const i8) -> u32{
+    0
+}