fix: layout and rustfmt

rustfmt.toml

@@ -0,0 +1,4 @@
+newline_style = "Unix"
+tab_spaces = 2
+use_field_init_shorthand = true
+use_try_shorthand = true

src/lib.rs

@@ -1,3 +1,68 @@
-fn main() {
-    println!("Hello, world!");
+use std::fs;
+
+pub fn get_file_metadata(path: &str) -> Result<fs::Metadata, std::io::Error> {
+  fs::metadata(path)
 }
+
+#[no_mangle]
+pub extern fn file_creation_date(path: *const i8) -> u64 {
+  let path = unsafe { std::ffi::CStr::from_ptr(path).to_bytes() };
+  let path = std::str::from_utf8(path).expect("Invalid UTF-8 string for path");
+
+  let metadata = get_file_metadata(path).expect("Failed to get file metadata");
+  let creation_time = metadata.created().expect("Failed to get file creation time");
+
+  creation_time.duration_since(std::time::UNIX_EPOCH).unwrap().as_secs()
+}
+
+#[no_mangle]
+pub extern fn file_modification_date(path: *const i8) -> u64 {
+  let path = unsafe { std::ffi::CStr::from_ptr(path).to_bytes() };
+  let path = std::str::from_utf8(path).expect("Invalid UTF-8 string for path");
+
+  let metadata = get_file_metadata(path).expect("Failed to get file metadata");
+  let modification_time = metadata.modified().expect("Failed to get file modification time");
+
+  modification_time.duration_since(std::time::UNIX_EPOCH).unwrap().as_secs()
+}
+
+#[no_mangle]
+pub extern fn file_access_date(path: *const i8) -> u64 {
+  let path = unsafe { std::ffi::CStr::from_ptr(path).to_bytes() };
+  let path = std::str::from_utf8(path).expect("Invalid UTF-8 string for path");
+
+  let metadata = get_file_metadata(path).expect("Failed to get file metadata");
+  let access_time = metadata.accessed().expect("Failed to get file access time");
+
+  access_time.duration_since(std::time::UNIX_EPOCH).unwrap().as_secs()
+}
+
+#[no_mangle]
+pub extern fn file_size(path: *const i8) -> u64 {
+  let path = unsafe { std::ffi::CStr::from_ptr(path).to_bytes() };
+  let path = std::str::from_utf8(path).expect("Invalid UTF-8 string for path");
+
+  let metadata = get_file_metadata(path).expect("Failed to get file metadata");
+  metadata.len()
+}
+
+#[no_mangle]
+pub extern fn file_exists(path: *const i8) -> bool {
+  let path = unsafe { std::ffi::CStr::from_ptr(path).to_bytes() };
+  let path = std::str::from_utf8(path).expect("Invalid UTF-8 string for path");
+
+  let metadata = get_file_metadata(path);
+  match metadata {
+    Ok(_) => true,
+    Err(_) => false
+  }
+}
+
+#[no_mangle]
+pub extern fn file_is_directory(path: *const i8) -> bool {
+  let path = unsafe { std::ffi::CStr::from_ptr(path).to_bytes() };
+  let path = std::str::from_utf8(path).expect("Invalid UTF-8 string for path");
+
+  let metadata = get_file_metadata(path).expect("Failed to get file metadata");
+  metadata.is_dir()
+}