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use crate::CollectionRef;
use glib::translate::ToGlibPtr;
use std::ffi::CStr;
trait AsNonnullPtr
where
Self: Sized,
{
fn as_nonnull_ptr(&self) -> Option<Self>;
}
impl<T> AsNonnullPtr for *mut T {
fn as_nonnull_ptr(&self) -> Option<Self> {
if self.is_null() {
None
} else {
Some(*self)
}
}
}
impl CollectionRef {
/// Get the collection ID from this `CollectionRef`.
///
/// # Returns
/// Since the value may not be valid UTF-8, `&CStr` is returned. You can safely turn it into a
/// `&str` using the `as_str` method.
///
/// If no collection ID was set in the `CollectionRef`, `None` is returned.
pub fn collection_id(&self) -> Option<&CStr> {
let inner = self.to_glib_none();
unsafe {
(*inner.0)
.collection_id
.as_nonnull_ptr()
.map(|ptr| CStr::from_ptr(ptr))
}
}
/// Get the ref name from this `CollectionRef`.
///
/// # Returns
/// Since the value may not be valid UTF-8, `&CStr` is returned. You can safely turn it into a
/// `&str` using the `as_str` method.
pub fn ref_name(&self) -> &CStr {
let inner = self.to_glib_none();
unsafe { CStr::from_ptr((*inner.0).ref_name) }
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn should_get_collection_id() {
let collection_ref = CollectionRef::new(Some("collection.id"), "ref");
let id = collection_ref.collection_id().unwrap().to_str().unwrap();
assert_eq!(id, "collection.id");
}
#[test]
fn should_get_none_collection_id() {
let collection_ref = CollectionRef::new(None, "ref");
let id = collection_ref.collection_id();
assert_eq!(id, None);
}
#[test]
fn should_get_ref_name() {
let collection_ref = CollectionRef::new(Some("collection.id"), "ref-name");
let ref_name = collection_ref.ref_name().to_str().unwrap();
assert_eq!(ref_name, "ref-name");
}
}
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