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use std::ffi::CStr;
use std::iter::Iterator;
use std::ops::Drop;
use std::path::PathBuf;
use std::rc::Rc;
use from_variants::FromVariants;
use Directory;
use Message;
use ffi;
#[derive(Clone, Debug, FromVariants)]
pub(crate) enum FilenamesOwner {
Directory(Directory),
Message(Message),
}
#[derive(Debug)]
pub(crate) struct FilenamesPtr(*mut ffi::notmuch_filenames_t);
impl Drop for FilenamesPtr {
fn drop(&mut self) {
unsafe { ffi::notmuch_filenames_destroy(self.0) };
}
}
#[derive(Debug, Clone)]
pub struct Filenames {
ptr: Rc<FilenamesPtr>,
owner: FilenamesOwner,
}
impl Filenames {
pub(crate) fn from_ptr<O>(ptr: *mut ffi::notmuch_filenames_t, owner: O) -> Self
where
O: Into<FilenamesOwner>,
{
Filenames {
ptr: Rc::new(FilenamesPtr(ptr)),
owner: owner.into(),
}
}
}
impl Iterator for Filenames {
type Item = PathBuf;
fn next(&mut self) -> Option<Self::Item> {
let valid = unsafe { ffi::notmuch_filenames_valid(self.ptr.0) };
if valid == 0 {
return None;
}
let ctag = unsafe {
let t = ffi::notmuch_filenames_get(self.ptr.0);
ffi::notmuch_filenames_move_to_next(self.ptr.0);
CStr::from_ptr(t)
};
Some(PathBuf::from(ctag.to_str().unwrap()))
}
}