[Rust] Simplify usage surrounding c strings

`cstring.as_ref().as_ptr() as *const c_char` -> `cstring.as_ptr()`
`cstring.as_ref().as_ptr() as *mut _` -> `cstring.as_ptr()`
`cstring.as_ptr() as *const c_char` -> `cstring.as_ptr()`

With a few fixes for cstrings that might be dropped prematurely.

1 files changed, 9 insertions, 0 deletions

diff --git a/rust/src/string.rs b/rust/src/string.rs
index 17fcf911..640731ff 100644
--- a/rust/src/string.rs
+++ b/rust/src/string.rs
@@ -23,6 +23,7 @@ use std::hash::{Hash, Hasher};
 use std::mem;
 use std::ops::Deref;
 use std::path::{Path, PathBuf};
+use crate::type_archive::TypeArchiveSnapshotId;
 
 // TODO: Remove or refactor this.
 pub(crate) fn raw_to_string(ptr: *const c_char) -> Option<String> {
@@ -291,6 +292,14 @@ unsafe impl AsCStr for &Path {
     }
 }
 
+unsafe impl AsCStr for TypeArchiveSnapshotId {
+    type Result = CString;
+    
+    fn to_cstr(self) -> Self::Result {
+        self.to_string().to_cstr()
+    }   
+}
+
 pub trait IntoJson {
     type Output: AsCStr;