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use std::ffi::CStr;
use std::iter::Iterator;
use std::ops::Drop;
use std::path::PathBuf;
use ffi;
use utils::ScopedPhantomcow;
pub trait FilenamesOwner {}
#[derive(Debug)]
pub struct Filenames<'o, O>
where
O: FilenamesOwner + 'o,
{
pub(crate) ptr: *mut ffi::notmuch_filenames_t,
pub(crate) marker: ScopedPhantomcow<'o, O>,
}
impl<'o, O> Drop for Filenames<'o, O>
where
O: FilenamesOwner + 'o,
{
fn drop(self: &mut Self) {
unsafe { ffi::notmuch_filenames_destroy(self.ptr) };
}
}
impl<'o, O> Filenames<'o, O>
where
O: FilenamesOwner + 'o,
{
pub fn from_ptr<P>(ptr: *mut ffi::notmuch_filenames_t, owner: P) -> Filenames<'o, O>
where
P: Into<ScopedPhantomcow<'o, O>>,
{
Filenames {
ptr,
marker: owner.into(),
}
}
}
impl<'o, O> Iterator for Filenames<'o, O>
where
O: FilenamesOwner + 'o,
{
type Item = PathBuf;
fn next(self: &mut Self) -> Option<Self::Item> {
let valid = unsafe { ffi::notmuch_filenames_valid(self.ptr) };
if valid == 0 {
return None;
}
let ctag = unsafe {
let t = ffi::notmuch_filenames_get(self.ptr);
ffi::notmuch_filenames_move_to_next(self.ptr);
CStr::from_ptr(t)
};
Some(PathBuf::from(ctag.to_str().unwrap()))
}
}
unsafe impl<'o, O> Send for Filenames<'o, O> where O: FilenamesOwner + 'o {}
unsafe impl<'o, O> Sync for Filenames<'o, O> where O: FilenamesOwner + 'o {}