133 lines
3.6 KiB
Rust
133 lines
3.6 KiB
Rust
//
|
|
// imag - the personal information management suite for the commandline
|
|
// Copyright (C) 2015-2019 Matthias Beyer <mail@beyermatthias.de> and contributors
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Lesser General Public
|
|
// License as published by the Free Software Foundation; version
|
|
// 2.1 of the License.
|
|
//
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
//
|
|
|
|
use std::result::Result as RResult;
|
|
|
|
use failure::Fallible as Result;
|
|
use failure::Error;
|
|
use filters::failable::filter::FailableFilter;
|
|
|
|
use libimagstore::store::FileLockEntry;
|
|
use libimagstore::store::Entry;
|
|
|
|
use crate::entry::Todo;
|
|
use crate::status::Status;
|
|
use crate::priority::Priority;
|
|
|
|
/// Iterator adaptor which filters an Iterator<Item = FileLockEntry> so that only todos are left
|
|
pub struct OnlyTodos<'a>(Box<dyn Iterator<Item = FileLockEntry<'a>>>);
|
|
|
|
impl<'a> OnlyTodos<'a> {
|
|
pub fn new(it: Box<dyn Iterator<Item = FileLockEntry<'a>>>) -> Self {
|
|
OnlyTodos(it)
|
|
}
|
|
}
|
|
|
|
impl<'a> Iterator for OnlyTodos<'a> {
|
|
type Item = Result<FileLockEntry<'a>>;
|
|
|
|
fn next(&mut self) -> Option<Self::Item> {
|
|
while let Some(next) = self.0.next() {
|
|
match next.is_todo() {
|
|
Ok(true) => return Some(Ok(next)),
|
|
Ok(false) => continue,
|
|
Err(e) => return Some(Err(e)),
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Helper filter type
|
|
///
|
|
/// Can be used to filter an Iterator<Item = FileLockEntry> of Todos by status
|
|
///
|
|
pub struct StatusFilter(Status);
|
|
|
|
impl FailableFilter<Entry> for StatusFilter {
|
|
type Error = Error;
|
|
|
|
fn filter(&self, entry: &Entry) -> RResult<bool, Self::Error> {
|
|
Ok(entry.get_status()? == self.0)
|
|
}
|
|
}
|
|
|
|
/// Helper filter type
|
|
///
|
|
/// Can be used to filter an Iterator<Item = FileLockEntry> of Todos for scheduled todos
|
|
///
|
|
pub struct IsScheduledFilter;
|
|
|
|
impl FailableFilter<Entry> for IsScheduledFilter {
|
|
type Error = Error;
|
|
|
|
fn filter(&self, entry: &Entry) -> RResult<bool, Self::Error> {
|
|
entry.get_scheduled().map(|s| s.is_some())
|
|
}
|
|
}
|
|
|
|
/// Helper filter type
|
|
///
|
|
/// Can be used to filter an Iterator<Item = FileLockEntry> of Todos for hidden todos
|
|
///
|
|
pub struct IsHiddenFilter;
|
|
|
|
impl FailableFilter<Entry> for IsHiddenFilter {
|
|
type Error = Error;
|
|
|
|
fn filter(&self, entry: &Entry) -> RResult<bool, Self::Error> {
|
|
entry.get_hidden().map(|s| s.is_some())
|
|
}
|
|
}
|
|
|
|
|
|
/// Helper filter type
|
|
///
|
|
/// Can be used to filter an Iterator<Item = FileLockEntry> of Todos for due todos
|
|
///
|
|
pub struct IsDueFilter;
|
|
|
|
impl FailableFilter<Entry> for IsDueFilter {
|
|
type Error = Error;
|
|
|
|
fn filter(&self, entry: &Entry) -> RResult<bool, Self::Error> {
|
|
entry.get_due().map(|s| s.is_some())
|
|
}
|
|
}
|
|
|
|
|
|
/// Helper filter type
|
|
///
|
|
/// Can be used to filter an Iterator<Item = FileLockEntry> of Todos for priority
|
|
///
|
|
/// # Warning
|
|
///
|
|
/// If no priority is set for the entry, this filters out the entry
|
|
///
|
|
pub struct PriorityFilter(Priority);
|
|
|
|
impl FailableFilter<Entry> for PriorityFilter {
|
|
type Error = Error;
|
|
|
|
fn filter(&self, entry: &Entry) -> RResult<bool, Self::Error> {
|
|
Ok(entry.get_priority()?.map(|p| p == self.0).unwrap_or(false))
|
|
}
|
|
}
|
|
|