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//
// imag - the personal information management suite for the commandline
// Copyright (C) 2015, 2016 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 toml_query::insert::TomlValueInsertExt;
use toml_query::read::TomlValueReadExt;
use toml_query::error::ErrorKind as TQEK;
use toml::Value;
use libimagstore::store::Entry;
use error::CategoryErrorKind as CEK;
use error::CategoryError as CE;
use error::ResultExt;
use result::Result;
use register::CategoryRegister;
#[derive(Clone, Debug, Eq, PartialEq, Ord, PartialOrd)]
pub struct Category(String);
impl From<String> for Category {
fn from(s: String) -> Category {
Category(s)
}
}
impl Into<String> for Category {
fn into(self) -> String {
self.0
}
}
pub trait EntryCategory {
fn set_category(&mut self, s: Category) -> Result<()>;
fn set_category_checked(&mut self, register: &CategoryRegister, s: Category) -> Result<()>;
fn get_category(&self) -> Result<Option<Category>>;
fn has_category(&self) -> Result<bool>;
}
impl EntryCategory for Entry {
fn set_category(&mut self, s: Category) -> Result<()> {
self.get_header_mut()
.insert(&String::from("category.value"), Value::String(s.into()))
.chain_err(|| CEK::HeaderWriteError)
.map(|_| ())
}
/// Check whether a category exists before setting it.
///
/// This function should be used by default over EntryCategory::set_category()!
fn set_category_checked(&mut self, register: &CategoryRegister, s: Category) -> Result<()> {
register.category_exists(&s.0)
.and_then(|bl| if bl {
self.set_category(s)
} else {
Err(CE::from_kind(CEK::CategoryDoesNotExist))
})
}
fn get_category(&self) -> Result<Option<Category>> {
match self.get_header().read(&String::from("category.value")) {
Err(res) => match res.kind() {
&TQEK::IdentifierNotFoundInDocument(_) => Ok(None),
_ => Err(res),
}
.chain_err(|| CEK::HeaderReadError),
Ok(Some(&Value::String(ref s))) => Ok(Some(s.clone().into())),
Ok(None) => Err(CE::from_kind(CEK::StoreReadError)).chain_err(|| CEK::HeaderReadError),
Ok(_) => Err(CE::from_kind(CEK::TypeError)).chain_err(|| CEK::HeaderReadError),
}
}
fn has_category(&self) -> Result<bool> {
self.get_header().read(&String::from("category.value"))
.chain_err(|| CEK::HeaderReadError)
.map(|e| e.is_some())
}
}
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