94 lines
2.8 KiB
Rust
94 lines
2.8 KiB
Rust
//
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// imag - the personal information management suite for the commandline
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// Copyright (C) 2015-2018 Matthias Beyer <mail@beyermatthias.de> and contributors
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; version
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// 2.1 of the License.
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//
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// This library 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 GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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//
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use std::ops::BitXor;
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use failure::Error;
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use failure::Fallible as Result;
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use habit::HabitTemplate;
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use instance::HabitInstance;
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use libimagstore::storeid::StoreId;
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use libimagstore::store::Entry;
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use libimagerror::errors::ErrorMsg as EM;
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/// Helper trait to check whether a object which can be a habit instance and a habit template is
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/// actually a valid object, whereas "valid" is defined that it is _either_ an instance or a
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/// template (think XOR).
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pub trait IsValidHabitObj : HabitInstance + HabitTemplate {
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fn is_valid_havit_obj(&self) -> Result<bool> {
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self.is_habit_instance().and_then(|b| self.is_habit_template().map(|a| a.bitxor(b)))
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}
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}
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impl<H> IsValidHabitObj for H
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where H: HabitInstance + HabitTemplate
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{
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// Empty
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}
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pub trait IsHabitCheck {
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fn is_habit(&self) -> bool;
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fn is_habit_instance(&self) -> bool;
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fn is_habit_template(&self) -> bool;
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}
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impl IsHabitCheck for StoreId {
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fn is_habit(&self) -> bool {
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self.is_in_collection(&["habit"])
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}
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fn is_habit_instance(&self) -> bool {
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self.is_in_collection(&["habit", "instance"])
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}
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fn is_habit_template(&self) -> bool {
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self.is_in_collection(&["habit", "template"])
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}
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}
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impl IsHabitCheck for Entry {
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/// Helper function to check whether an entry is a habit (either instance or template)
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fn is_habit(&self) -> bool {
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self.get_location().is_habit()
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}
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/// Check whether an entry is a habit instance
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fn is_habit_instance(&self) -> bool {
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self.get_location().is_habit_instance()
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}
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/// Check whether an entry is a habit template
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fn is_habit_template(&self) -> bool {
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self.get_location().is_habit_template()
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}
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}
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#[inline]
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pub fn get_string_header_from_entry(e: &Entry, path: &'static str) -> Result<String> {
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use toml_query::read::TomlValueReadTypeExt;
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e.get_header()
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.read_string(path)?
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.ok_or_else(|| EM::EntryHeaderFieldMissing(path))
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.map_err(Error::from)
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}
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