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