Merge pull request #117 from Peefy/kcl-c-api-based-cbingen

feat: kcl capi based cbindgen

Author: Peefy

c/build.rs

@@ -0,0 +1,11 @@
+extern crate cbindgen;
+
+use std::path::Path;
+
+fn main() {
+    let header_file = Path::new("include").join("kcl_ffi.h");
+
+    cbindgen::generate(".")
+        .expect("Unable to generate bindings")
+        .write_to_file(header_file);
+}

c/cbindgen.toml

@@ -0,0 +1,9 @@
+cpp_compat = true
+include_guard = "_KCL_FFI_H"
+language = "C"
+no_includes = true
+sys_includes = ["stdint.h", "stddef.h", "stdbool.h"]
+
+[parse]
+include = ["kcl_ffi"]
+parse_deps = true

c/examples/exec_api.c

@@ -1,6 +1,7 @@
 #include <kcl_lib.h>
 
-int exec_file(const char* file_str) {
+int exec_file(const char* file_str)
+{
     uint8_t buffer[BUFFER_SIZE];
     uint8_t result_buffer[BUFFER_SIZE];
     size_t message_length;

c/examples/ping_api.c

@@ -1,6 +1,7 @@
 #include <kcl_lib.h>
 
-int ping(const char* msg) {
+int ping(const char* msg)
+{
     uint8_t buffer[BUFFER_SIZE];
     uint8_t result_buffer[BUFFER_SIZE];
     size_t message_length;

c/include/kcl_ffi.h

@@ -0,0 +1,22 @@
+#ifndef _KCL_FFI_H
+#define _KCL_FFI_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+uintptr_t call_native(const uint8_t *name_ptr,
+                      uintptr_t name_len,
+                      const uint8_t *args_ptr,
+                      uintptr_t args_len,
+                      uint8_t *result_ptr);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif // __cplusplus
+
+#endif /* _KCL_FFI_H */

c/include/kcl_lib.h

@@ -14,6 +14,8 @@ extern "C" {
 #include <stddef.h>
 #include <stdbool.h>
 
+#include "kcl_ffi.h"
+
 #define BUFFER_SIZE 1024
 
 struct Buffer {
@@ -77,12 +79,6 @@ bool check_error_prefix(uint8_t result_buffer[])
     return false;
 }
 
-uintptr_t call_native(const uint8_t *name_ptr,
-                      uintptr_t name_len,
-                      const uint8_t *args_ptr,
-                      uintptr_t args_len,
-                      uint8_t *result_ptr);
-
 #ifdef __cplusplus
 } /* extern "C" */
 #endif