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