summaryrefslogtreecommitdiffstats
path: root/lib/domain/libimagbookmark/src/collection.rs
blob: a50208ad429d0c982ab78fa5aff39bb6e4e3e75d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
//
// 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
//

//! BookmarkCollection module
//!
//! A BookmarkCollection is nothing more than a simple store entry. One can simply call functions
//! from the libimagentryurl::linker::UrlLinker trait on this to generate external links.
//!
//! The BookmarkCollection type offers helper functions to get all links or such things.

use regex::Regex;

use failure::Fallible as Result;
use failure::ResultExt;
use failure::Error;

use libimagstore::store::Store;
use libimagstore::store::Entry;
use libimagstore::store::FileLockEntry;
use libimagstore::storeid::StoreId;
use libimagentryurl::linker::UrlLinker;
use libimagentryurl::iter::UrlIter;
use libimagentrylink::linkable::Linkable;
use libimagentrylink::link::Link as StoreLink;

use crate::link::Link;

use self::iter::LinksMatchingRegexIter;

pub trait BookmarkCollectionStore<'a> {
    fn new(&'a self, name: &str)                     -> Result<FileLockEntry<'a>>;
    fn get(&'a self, name: &str)                     -> Result<Option<FileLockEntry<'a>>>;
    fn delete(&'a self, name: &str)                     -> Result<()>;
}

impl<'a> BookmarkCollectionStore<'a> for Store {

    #[allow(clippy::new_ret_no_self)]
    fn new(&'a self, name: &str) -> Result<FileLockEntry<'a>> {
        crate::module_path::new_id(name)
            .and_then(|id| self.create(id)
                      .context("Failed to create FileLockEntry")
                      .map_err(Error::from))
            .context("Failed to create Id for new Bookmark Collection")
            .map_err(Error::from)
    }

    fn get(&'a self, name: &str) -> Result<Option<FileLockEntry<'a>>> {
        crate::module_path::new_id(name)
            .and_then(|id| self.get(id)
                      .context("Failed to get FileLockEntry")
                      .map_err(Error::from))
            .context("Failed to get Bookmark Collection")
            .map_err(Error::from)
    }

    fn delete(&'a self, name: &str) -> Result<()> {
        crate::module_path::new_id(name)
            .and_then(|id| self.delete(id)
                      .context("Failed to delete FileLockEntry")
                      .map_err(Error::from))
            .context("Failed to delete Bookmark Collection")
            .map_err(Error::from)
    }

}

pub trait BookmarkCollection : Sized + Linkable + UrlLinker {
    fn get_links<'a>(&self, store: &'a Store)                    -> Result<UrlIter<'a>>;
    fn link_entries(&self)                                       -> Result<Vec<StoreLink>>;
    fn add_link(&mut self, store: &Store, l: Link)               -> Result<Vec<StoreId>>;
    fn get_links_matching<'a>(&self, store: &'a Store, r: Regex) -> Result<LinksMatchingRegexIter<'a>>;
    fn remove_link(&mut self, store: &Store, l: Link)            -> Result<Vec<StoreId>>;
}

impl BookmarkCollection for Entry {

    fn get_links<'a>(&self, store: &'a Store) -> Result<UrlIter<'a>> {
        self.get_urls(store)
    }

    #[allow(clippy::redundant_closure)]
    fn link_entries(&self) -> Result<Vec<StoreLink>> {
        use libimagentryurl::util::is_external_link_storeid;
        self.links().map(|v| v.filter(|id| is_external_link_storeid(id)).collect())
    }

    fn add_link(&mut self, store: &Store, l: Link) -> Result<Vec<StoreId>> {
        use crate::link::IntoUrl;
        l.into_url().and_then(|url| self.add_url(store, url))
    }

    fn get_links_matching<'a>(&self, store: &'a Store, r: Regex) -> Result<LinksMatchingRegexIter<'a>> {
        use self::iter::IntoLinksMatchingRegexIter;
        self.get_urls(store).map(|iter| iter.matching_regex(r))
    }

    fn remove_link(&mut self, store: &Store, l: Link) -> Result<Vec<StoreId>> {
        use crate::link::IntoUrl;
        l.into_url().and_then(|url| self.remove_url(store, url))
    }

}

pub mod iter {
    use crate::link::Link;
    use failure::Fallible as Result;
    use regex::Regex;

    use libimagentryurl::iter::UrlIter;

    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)
        }
    }

    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)),
                    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)
        }
    }

}