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

//
// imag - the personal information management suite for the commandline
// Copyright (C) 2015-2020 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
//

#![forbid(unsafe_code)]

#![deny(
    non_camel_case_types,
    non_snake_case,
    path_statements,
    trivial_numeric_casts,
    unstable_features,
    unused_allocation,
    unused_import_braces,
    unused_imports,
    unused_must_use,
    unused_mut,
    unused_qualifications,
    while_true,
)]

#[macro_use] extern crate log;
#[macro_use] extern crate failure;
extern crate resiter;
extern crate clap;

extern crate libimagrt;
extern crate libimagstore;
extern crate libimagerror;
extern crate libimagentrylink;

mod ui;

use std::path::PathBuf;

use libimagrt::runtime::Runtime;
use libimagrt::application::ImagApplication;
use libimagstore::storeid::StoreId;
use libimagstore::store::Store;
use libimagstore::store::FileLockEntry;
use libimagentrylink::linkable::Linkable;
use libimagstore::iter::get::StoreIdGetIteratorExtension;

use failure::Fallible as Result;
use failure::err_msg;
use resiter::IterInnerOkOrElse;
use clap::App;


/// Marker enum for implementing ImagApplication on
///
/// This is used by binaries crates to execute business logic
/// or to build a CLI completion.
pub enum ImagMv {}
impl ImagApplication for ImagMv {
    fn run(rt: Runtime) -> Result<()> {
        let sourcename = rt
            .cli()
            .value_of("source")
            .map(PathBuf::from)
            .map(StoreId::new)
            .unwrap()?; // unwrap safe by clap

        let destname = rt
            .cli()
            .value_of("dest")
            .map(PathBuf::from)
            .map(StoreId::new)
            .unwrap()?; // unwrap safe by clap

        // remove links to entry, and re-add them later
        let mut linked_entries = rt.store()
            .get(sourcename.clone())?
            .ok_or_else(|| format_err!("Entry does not exist: {}", sourcename))?
            .links()?
            .map(|link| link.get_store_id().clone())
            .map(Ok)
            .into_get_iter(rt.store())
            .map_inner_ok_or_else(|| err_msg("Linked entry does not exist"))
            .collect::<Result<Vec<_>>>()?;

        { // remove links to linked entries from source
            let mut entry = rt
                .store()
                .get(sourcename.clone())?
                .ok_or_else(|| err_msg("Source Entry does not exist"))?;

            for link in linked_entries.iter_mut() {
                entry.remove_link(link)?;
            }
        }

        if let Err(e) = rt.store().move_by_id(sourcename.clone(), destname.clone()) {
            debug!("Re-adding links to source entry because moving failed");
            relink(rt.store(), sourcename, &mut linked_entries)?;

            return Err(e);
        }

        rt.report_touched(&destname)?;

        // re-add links to moved entry
        relink(rt.store(), destname, &mut linked_entries)?;

        info!("Ok.");
        Ok(())
    }

    fn build_cli<'a>(app: App<'a, 'a>) -> App<'a, 'a> {
        ui::build_ui(app)
    }

    fn name() -> &'static str {
        env!("CARGO_PKG_NAME")
    }

    fn description() -> &'static str {
        "Move things around in the store"
    }

    fn version() -> &'static str {
        env!("CARGO_PKG_VERSION")
    }
}



fn relink<'a>(store: &'a Store, target: StoreId, linked_entries: &mut Vec<FileLockEntry<'a>>) -> Result<()> {
    let mut entry = store
        .get(target)?
        .ok_or_else(|| err_msg("Funny things happened: Entry moved to destination did not fail, but entry does not exist"))?;

    linked_entries
        .iter_mut()
        .map(|mut link| entry.add_link(&mut link))
        .collect::<Result<Vec<_>>>()
        .map(|_| ())
}