libimagmvcmd/
lib.rs

1//
2// imag - the personal information management suite for the commandline
3// Copyright (C) 2015-2020 Matthias Beyer <mail@beyermatthias.de> and contributors
4//
5// This library is free software; you can redistribute it and/or
6// modify it under the terms of the GNU Lesser General Public
7// License as published by the Free Software Foundation; version
8// 2.1 of the License.
9//
10// This library is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13// Lesser General Public License for more details.
14//
15// You should have received a copy of the GNU Lesser General Public
16// License along with this library; if not, write to the Free Software
17// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
18//
19
20#![forbid(unsafe_code)]
21
22#![deny(
23    non_camel_case_types,
24    non_snake_case,
25    path_statements,
26    trivial_numeric_casts,
27    unstable_features,
28    unused_allocation,
29    unused_import_braces,
30    unused_imports,
31    unused_must_use,
32    unused_mut,
33    unused_qualifications,
34    while_true,
35)]
36
37#[macro_use] extern crate log;
38#[macro_use] extern crate failure;
39extern crate resiter;
40extern crate clap;
41
42extern crate libimagrt;
43extern crate libimagstore;
44extern crate libimagerror;
45extern crate libimagentrylink;
46
47mod ui;
48
49use std::path::PathBuf;
50
51use libimagrt::runtime::Runtime;
52use libimagrt::application::ImagApplication;
53use libimagstore::storeid::StoreId;
54use libimagstore::store::Store;
55use libimagstore::store::FileLockEntry;
56use libimagentrylink::linkable::Linkable;
57use libimagstore::iter::get::StoreIdGetIteratorExtension;
58
59use failure::Fallible as Result;
60use failure::err_msg;
61use resiter::IterInnerOkOrElse;
62use clap::App;
63
64
65/// Marker enum for implementing ImagApplication on
66///
67/// This is used by binaries crates to execute business logic
68/// or to build a CLI completion.
69pub enum ImagMv {}
70impl ImagApplication for ImagMv {
71    fn run(rt: Runtime) -> Result<()> {
72        let sourcename = rt
73            .cli()
74            .value_of("source")
75            .map(PathBuf::from)
76            .map(StoreId::new)
77            .unwrap()?; // unwrap safe by clap
78
79        let destname = rt
80            .cli()
81            .value_of("dest")
82            .map(PathBuf::from)
83            .map(StoreId::new)
84            .unwrap()?; // unwrap safe by clap
85
86        // remove links to entry, and re-add them later
87        let mut linked_entries = rt.store()
88            .get(sourcename.clone())?
89            .ok_or_else(|| format_err!("Entry does not exist: {}", sourcename))?
90            .links()?
91            .map(|link| link.get_store_id().clone())
92            .map(Ok)
93            .into_get_iter(rt.store())
94            .map_inner_ok_or_else(|| err_msg("Linked entry does not exist"))
95            .collect::<Result<Vec<_>>>()?;
96
97        { // remove links to linked entries from source
98            let mut entry = rt
99                .store()
100                .get(sourcename.clone())?
101                .ok_or_else(|| err_msg("Source Entry does not exist"))?;
102
103            for link in linked_entries.iter_mut() {
104                entry.remove_link(link)?;
105            }
106        }
107
108        if let Err(e) = rt.store().move_by_id(sourcename.clone(), destname.clone()) {
109            debug!("Re-adding links to source entry because moving failed");
110            relink(rt.store(), sourcename, &mut linked_entries)?;
111
112            return Err(e);
113        }
114
115        rt.report_touched(&destname)?;
116
117        // re-add links to moved entry
118        relink(rt.store(), destname, &mut linked_entries)?;
119
120        info!("Ok.");
121        Ok(())
122    }
123
124    fn build_cli<'a>(app: App<'a, 'a>) -> App<'a, 'a> {
125        ui::build_ui(app)
126    }
127
128    fn name() -> &'static str {
129        env!("CARGO_PKG_NAME")
130    }
131
132    fn description() -> &'static str {
133        "Move things around in the store"
134    }
135
136    fn version() -> &'static str {
137        env!("CARGO_PKG_VERSION")
138    }
139}
140
141
142
143fn relink<'a>(store: &'a Store, target: StoreId, linked_entries: &mut Vec<FileLockEntry<'a>>) -> Result<()> {
144    let mut entry = store
145        .get(target)?
146        .ok_or_else(|| err_msg("Funny things happened: Entry moved to destination did not fail, but entry does not exist"))?;
147
148    linked_entries
149        .iter_mut()
150        .map(|mut link| entry.add_link(&mut link))
151        .collect::<Result<Vec<_>>>()
152        .map(|_| ())
153}
154
libimagmvcmd/lib.rs

libimagmvcmd/
lib.rs
