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//
// 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 failure::Error;
use failure::ResultExt;
use failure::Fallible as Result;
use failure::err_msg;
use url::Url;
use toml_query::read::Partial;
use toml_query::insert::TomlValueInsertExt;
use toml::Value;
use libimagstore::store::Entry;
use libimagerror::errors::ErrorMsg as EM;
use toml_query::read::TomlValueReadExt;
pub trait Link {
fn get_url(&self) -> Result<Option<Url>>;
fn set_url(&mut self, url: Url) -> Result<()>;
}
#[derive(Deserialize, Serialize, Debug)]
pub(crate) struct UrlHeader {
pub uri: Option<String>,
}
impl Default for UrlHeader {
fn default() -> Self {
UrlHeader {
uri: None
}
}
}
impl<'a> Partial<'a> for UrlHeader {
const LOCATION: &'static str = "url";
type Output = Self;
}
impl Link for Entry {
/// Get the URL from entry Entry
///
/// # Notice
///
/// This actually returns the header field of the entry, parsed as URL
///
///
fn get_url(&self) -> Result<Option<Url>> {
let partial = self.get_header()
.read_partial::<UrlHeader>()
.context(format_err!("Error reading header 'url.uri' from '{}'", self.get_location()))
.context(EM::EntryHeaderReadError)
.map_err(Error::from)?
.unwrap_or_else(Default::default);
debug!("Partial deserialized: {:?}", partial);
let url = match partial.uri {
Some(uri) => uri,
None => return Ok(None),
};
debug!("Found url, parsing: {:?}", url);
Url::parse(&url)
.map_err(Error::from)
.context(format_err!("Failed to parse URL: '{}'", url))
.context(err_msg("Invalid URI"))
.map_err(Error::from)
.map(Some)
.context("Failed to get link URI from entry")
.map_err(Error::from)
}
fn set_url(&mut self, url: Url) -> Result<()> {
let val = Value::String(url.to_string());
self.get_header_mut().insert_serialized("url.uri", val)?;
debug!("Setting URL worked");
Ok(())
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::path::PathBuf;
use libimagstore::store::Store;
fn setup_logging() {
let _ = env_logger::try_init();
}
pub fn get_store() -> Store {
Store::new_inmemory(PathBuf::from("/"), &None).unwrap()
}
#[test]
fn test_header_set_correctly() {
setup_logging();
let store = get_store();
let mut e = store.retrieve(PathBuf::from("urlentry")).unwrap();
let url = Url::parse("http://google.de").unwrap();
assert!(e.set_url(url).is_ok());
debug!("Fetch header: {:?}", e.get_header());
let url = e.get_header().read("url.uri");
debug!("Fetched header: {:?}", url);
assert!(url.is_ok());
let url = url.unwrap();
assert!(url.is_some());
let url = url.unwrap();
match url {
Value::String(ref s) => assert_eq!("http://google.de/", s),
_ => panic!(),
}
}
}
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