ostree/rust-bindings/rust/libostree/src/repo.rs

65 lines
2.1 KiB
Rust

use auto::Repo;
use ffi;
use gio;
use glib;
use glib::Error;
use glib::IsA;
use glib::translate::*;
use glib_ffi;
use std::collections::HashSet;
use std::ptr;
use std::path::Path;
use ObjectName;
unsafe extern "C" fn read_variant_table(_key: glib_ffi::gpointer, value: glib_ffi::gpointer, hash_set: glib_ffi::gpointer) {
let value: glib::Variant = from_glib_none(value as *const glib_ffi::GVariant);
// TODO: this set is degenerate because g_variant_hash for my Variants is always 0
let set: &mut HashSet<ObjectName> = &mut *(hash_set as *mut HashSet<ObjectName>);
set.insert(ObjectName::new(value));
}
unsafe fn from_glib_container_variant_set(ptr: *mut glib_ffi::GHashTable) -> HashSet<ObjectName> {
let mut set = HashSet::new();
glib_ffi::g_hash_table_foreach(ptr, Some(read_variant_table), &mut set as *mut HashSet<ObjectName> as *mut _);
glib_ffi::g_hash_table_unref(ptr);
set
}
pub trait RepoExtManual {
fn new_for_path<P: AsRef<Path>>(path: P) -> Repo;
fn traverse_commit<'a, P: Into<Option<&'a gio::Cancellable>>>(
&self,
commit_checksum: &str,
maxdepth: i32,
cancellable: P) -> Result<HashSet<ObjectName>, Error>;
}
impl<O: IsA<Repo> + IsA<glib::Object> + Clone + 'static> RepoExtManual for O {
fn new_for_path<P: AsRef<Path>>(path: P) -> Repo {
Repo::new(&gio::File::new_for_path(path.as_ref()))
}
fn traverse_commit<'a, P: Into<Option<&'a gio::Cancellable>>>(
&self,
commit_checksum: &str,
maxdepth: i32,
cancellable: P,
) -> Result<HashSet<ObjectName>, Error> {
unsafe {
let mut error = ptr::null_mut();
let mut hashtable = ptr::null_mut();
let _ = ffi::ostree_repo_traverse_commit(
self.to_glib_none().0,
commit_checksum.to_glib_none().0,
maxdepth,
&mut hashtable,
cancellable.into().to_glib_none().0,
&mut error,
);
if error.is_null() { Ok(from_glib_container_variant_set(hashtable)) } else { Err(from_glib_full(error)) }
}
}
}