81 lines
2.7 KiB
Rust
81 lines
2.7 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 std::path::PathBuf;
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use toml::Value;
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use libimagstore::store::Entry;
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use libimagstore::store::FileLockEntry;
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use libimagstore::store::Store;
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use libimagentrylink::internal::InternalLinker;
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use libimagerror::into::IntoError;
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use toml_query::read::TomlValueReadExt;
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use toml_query::insert::TomlValueInsertExt;
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use result::Result;
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use error::AnnotationErrorKind as AEK;
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use error::MapErrInto;
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pub trait Annotateable {
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/// Add an annotation to `Self`, that is a `FileLockEntry` which is linked to `Self` (link as in
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/// libimagentrylink).
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///
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/// A new annotation also has the field `annotation.is_annotation` set to `true`.
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fn annotate<'a>(&mut self, store: &'a Store, ann_name: &str) -> Result<FileLockEntry<'a>>;
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/// Check whether an entry is an annotation
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fn is_annotation(&self) -> Result<bool>;
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}
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impl Annotateable for Entry {
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fn annotate<'a>(&mut self, store: &'a Store, ann_name: &str) -> Result<FileLockEntry<'a>> {
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store.retrieve(PathBuf::from(ann_name))
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.map_err_into(AEK::StoreWriteError)
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.and_then(|mut anno| {
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anno.get_header_mut()
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.insert("annotation.is_annotation", Value::Boolean(true))
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.map_err_into(AEK::HeaderWriteError)
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.map(|_| anno)
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})
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.and_then(|mut anno| {
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anno.add_internal_link(self)
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.map_err_into(AEK::LinkingError)
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.map(|_| anno)
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})
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}
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fn is_annotation(&self) -> Result<bool> {
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self.get_header()
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.read("annotation.is_annotation")
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.map_err_into(AEK::StoreReadError)
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.and_then(|res| match res {
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Some(&Value::Boolean(b)) => Ok(b),
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None => Ok(false),
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_ => Err(AEK::HeaderTypeError.into_error()),
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})
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}
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}
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