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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
//
//! BookmarkCollection module
//!
//! A BookmarkCollection is nothing more than a simple store entry. One can simply call functions
//! from the libimagentrylink::external::ExternalLinker trait on this to generate external links.
//!
//! The BookmarkCollection type offers helper functions to get all links or such things.
use std::ops::Deref;
use std::ops::DerefMut;
use regex::Regex;
use error::BookmarkErrorKind as BEK;
use error::BookmarkError as BE;
use error::ResultExt;
use result::Result;
use module_path::ModuleEntryPath;
use libimagstore::store::Store;
use libimagstore::storeid::IntoStoreId;
use libimagstore::store::FileLockEntry;
use libimagentrylink::external::ExternalLinker;
use libimagentrylink::external::iter::UrlIter;
use libimagentrylink::internal::InternalLinker;
use libimagentrylink::internal::Link as StoreLink;
use link::Link;
use self::iter::LinksMatchingRegexIter;
pub struct BookmarkCollection<'a> {
fle: FileLockEntry<'a>,
store: &'a Store,
}
/// {Internal, External}Linker is implemented as Deref is implemented
impl<'a> Deref for BookmarkCollection<'a> {
type Target = FileLockEntry<'a>;
fn deref(&self) -> &FileLockEntry<'a> {
&self.fle
}
}
impl<'a> DerefMut for BookmarkCollection<'a> {
fn deref_mut(&mut self) -> &mut FileLockEntry<'a> {
&mut self.fle
}
}
impl<'a> BookmarkCollection<'a> {
pub fn new(store: &'a Store, name: &str) -> Result<BookmarkCollection<'a>> {
ModuleEntryPath::new(name)
.into_storeid()
.and_then(|id| store.create(id))
.map(|fle| {
BookmarkCollection {
fle: fle,
store: store,
}
})
.chain_err(|| BEK::StoreReadError)
}
pub fn get(store: &'a Store, name: &str) -> Result<BookmarkCollection<'a>> {
ModuleEntryPath::new(name)
.into_storeid()
.and_then(|id| store.get(id))
.chain_err(|| BEK::StoreReadError)
.and_then(|fle| {
match fle {
None => Err(BE::from_kind(BEK::CollectionNotFound)),
Some(e) => Ok(BookmarkCollection {
fle: e,
store: store,
}),
}
})
}
pub fn delete(store: &Store, name: &str) -> Result<()> {
ModuleEntryPath::new(name)
.into_storeid()
.and_then(|id| store.delete(id))
.chain_err(|| BEK::StoreReadError)
}
pub fn links(&self) -> Result<UrlIter> {
self.fle.get_external_links(&self.store).chain_err(|| BEK::LinkError)
}
pub fn link_entries(&self) -> Result<Vec<StoreLink>> {
use libimagentrylink::external::is_external_link_storeid;
self.fle
.get_internal_links()
.map(|v| v.filter(|id| is_external_link_storeid(id)).collect())
.chain_err(|| BEK::StoreReadError)
}
pub fn add_link(&mut self, l: Link) -> Result<()> {
use link::IntoUrl;
l.into_url()
.and_then(|url| self.add_external_link(self.store, url).chain_err(|| BEK::LinkingError))
.chain_err(|| BEK::LinkError)
}
pub fn get_links_matching(&self, r: Regex) -> Result<LinksMatchingRegexIter<'a>> {
use self::iter::IntoLinksMatchingRegexIter;
self.get_external_links(self.store)
.chain_err(|| BEK::LinkError)
.map(|iter| iter.matching_regex(r))
}
pub fn remove_link(&mut self, l: Link) -> Result<()> {
use link::IntoUrl;
l.into_url()
.and_then(|url| {
self.remove_external_link(self.store, url).chain_err(|| BEK::LinkingError)
})
.chain_err(|| BEK::LinkError)
}
}
pub mod iter {
use link::Link;
use result::Result;
use error::{ResultExt, BookmarkErrorKind as BEK};
pub struct LinkIter<I>(I)
where I: Iterator<Item = Link>;
impl<I: Iterator<Item = Link>> LinkIter<I> {
pub fn new(i: I) -> LinkIter<I> {
LinkIter(i)
}
}
impl<I: Iterator<Item = Link>> Iterator for LinkIter<I> {
type Item = Link;
fn next(&mut self) -> Option<Self::Item> {
self.0.next()
}
}
impl<I> From<I> for LinkIter<I> where I: Iterator<Item = Link> {
fn from(i: I) -> LinkIter<I> {
LinkIter(i)
}
}
use libimagentrylink::external::iter::UrlIter;
use regex::Regex;
pub struct LinksMatchingRegexIter<'a>(UrlIter<'a>, Regex);
impl<'a> LinksMatchingRegexIter<'a> {
pub fn new(i: UrlIter<'a>, r: Regex) -> LinksMatchingRegexIter<'a> {
LinksMatchingRegexIter(i, r)
}
}
impl<'a> Iterator for LinksMatchingRegexIter<'a> {
type Item = Result<Link>;
fn next(&mut self) -> Option<Self::Item> {
loop {
let n = match self.0.next() {
Some(Ok(n)) => n,
Some(Err(e)) => return Some(Err(e).chain_err(|| BEK::LinkError)),
None => return None,
};
let s = n.into_string();
if self.1.is_match(&s[..]) {
return Some(Ok(Link::from(s)))
} else {
continue;
}
}
}
}
pub trait IntoLinksMatchingRegexIter<'a> {
fn matching_regex(self, Regex) -> LinksMatchingRegexIter<'a>;
}
impl<'a> IntoLinksMatchingRegexIter<'a> for UrlIter<'a> {
fn matching_regex(self, r: Regex) -> LinksMatchingRegexIter<'a> {
LinksMatchingRegexIter(self, r)
}
}
}
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