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152 lines
4.6 KiB
Rust
152 lines
4.6 KiB
Rust
/*
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* melib - notmuch backend
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*
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* Copyright 2020 Manos Pitsidianakis
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*
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* This file is part of meli.
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*
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* meli is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* meli is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with meli. If not, see <http://www.gnu.org/licenses/>.
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*/
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use super::*;
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use crate::{
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notmuch::ffi::{
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notmuch_thread_destroy, notmuch_thread_get_messages, notmuch_thread_get_newest_date,
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notmuch_thread_get_thread_id, notmuch_thread_get_total_messages, notmuch_thread_t,
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notmuch_threads_get, notmuch_threads_move_to_next, notmuch_threads_t,
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notmuch_threads_valid,
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},
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thread::ThreadHash,
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};
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pub struct Thread<'query> {
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pub lib: Arc<NotmuchLibrary>,
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pub inner: NonNull<notmuch_thread_t>,
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pub _ph: std::marker::PhantomData<*const Query<'query>>,
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}
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impl<'q> Thread<'q> {
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#[inline]
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pub fn id(&self) -> ThreadHash {
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let thread_id = unsafe {
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// SAFETY:
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// All pointers used here are NonNull<_> wrapped.
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call!(self.lib, notmuch_thread_get_thread_id)(self.inner.as_ptr())
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};
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let c_str = unsafe { CStr::from_ptr(thread_id) };
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ThreadHash::from(c_str.to_bytes())
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}
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#[inline]
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pub fn date(&self) -> crate::UnixTimestamp {
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(unsafe {
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// SAFETY:
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// All pointers used here are NonNull<_> wrapped.
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call!(self.lib, notmuch_thread_get_newest_date)(self.inner.as_ptr())
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}) as u64
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}
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#[inline]
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pub fn len(&self) -> usize {
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(unsafe {
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// SAFETY:
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// All pointers used here are NonNull<_> wrapped.
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call!(self.lib, notmuch_thread_get_total_messages)(self.inner.as_ptr())
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}) as usize
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}
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#[inline]
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pub fn is_empty(&self) -> bool {
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self.len() == 0
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}
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pub fn iter(&'q self) -> MessageIterator<'q> {
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let messages = NonNull::new(unsafe {
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// SAFETY:
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// All pointers used here are NonNull<_> wrapped.
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call!(self.lib, notmuch_thread_get_messages)(self.inner.as_ptr())
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});
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MessageIterator {
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lib: self.lib.clone(),
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messages,
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is_from_thread: true,
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_ph: std::marker::PhantomData,
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}
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}
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}
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impl<'q> IntoIterator for &'q Thread<'q> {
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type IntoIter = MessageIterator<'q>;
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type Item = Message<'q>;
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fn into_iter(self) -> Self::IntoIter {
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self.iter()
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}
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}
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impl Drop for Thread<'_> {
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fn drop(&mut self) {
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unsafe {
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// SAFETY:
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// All pointers used here are NonNull<_> wrapped.
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call!(self.lib, notmuch_thread_destroy)(self.inner.as_ptr())
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}
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}
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}
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/// notmuch threads iterator.
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///
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///
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/// Quoting the docs:
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///
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/// > Note that there's no explicit destructor needed for the
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/// > [`notmuch_threads_t`] object. (For consistency, we do provide a
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/// > [`notmuch_threads_destroy`][crate::notmuch::ffi::notmuch_threads_destroy]
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/// > function, but there's no good reason
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/// > to call it if the query is about to be destroyed).
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///
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/// So there's no need to implement [`Drop`] for this type.
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pub struct ThreadsIterator<'query> {
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pub lib: Arc<NotmuchLibrary>,
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pub inner: Option<NonNull<notmuch_threads_t>>,
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pub _ph: std::marker::PhantomData<*const Query<'query>>,
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}
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impl<'q> Iterator for ThreadsIterator<'q> {
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type Item = Thread<'q>;
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fn next(&mut self) -> Option<Self::Item> {
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let inner = self.inner?;
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if unsafe { call!(self.lib, notmuch_threads_valid)(inner.as_ptr()) } == 1 {
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let Some(thread_inner) = NonNull::new(unsafe {
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// SAFETY:
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// All pointers used here are NonNull<_> wrapped.
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call!(self.lib, notmuch_threads_get)(inner.as_ptr())
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}) else {
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self.inner = None;
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return None;
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};
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unsafe {
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call!(self.lib, notmuch_threads_move_to_next)(inner.as_ptr());
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}
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Some(Thread {
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lib: self.lib.clone(),
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inner: thread_inner,
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_ph: std::marker::PhantomData,
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})
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} else {
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self.inner = None;
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None
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}
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}
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}
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