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
|
//
// 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
//
use std::path::PathBuf;
use std::fmt::Debug;
use std::collections::HashMap;
use std::sync::Arc;
use anyhow::Result;
use crate::store::Entry;
use crate::storeid::StoreIdWithBase;
pub mod fs;
pub mod inmemory;
pub mod iter;
use self::iter::PathIterator;
/// An abstraction trait over filesystem actions
pub(crate) trait FileAbstraction : Debug {
fn remove_file(&self, path: &PathBuf) -> Result<()>;
fn copy(&self, from: &PathBuf, to: &PathBuf) -> Result<()>;
fn rename(&self, from: &PathBuf, to: &PathBuf) -> Result<()>;
fn create_dir_all(&self, _: &PathBuf) -> Result<()>;
fn exists(&self, _: &PathBuf) -> Result<bool>;
fn is_file(&self, _: &PathBuf) -> Result<bool>;
fn new_instance(&self, p: PathBuf) -> Box<dyn FileAbstractionInstance>;
fn drain(&self) -> Result<Drain>;
fn fill(&mut self, d: Drain) -> Result<()>;
fn pathes_recursively<'a>(&self, basepath: PathBuf, storepath: &'a PathBuf, backend: Arc<dyn FileAbstraction>) -> Result<PathIterator<'a>>;
}
/// An abstraction trait over actions on files
pub(crate) trait FileAbstractionInstance : Debug {
/// Get the contents of the FileAbstractionInstance, as Entry object.
///
/// The `StoreIdWithBase` is passed because the backend does not know where the Entry lives, but the
/// Entry type itself must be constructed with the id.
fn get_file_content<'a>(&mut self, id: StoreIdWithBase<'a>) -> Result<Option<Entry>>;
fn write_file_content(&mut self, buf: &Entry) -> Result<()>;
}
pub struct Drain(HashMap<PathBuf, Entry>);
impl Drain {
pub fn new(hm: HashMap<PathBuf, Entry>) -> Drain {
Drain(hm)
}
pub fn empty() -> Drain {
Drain::new(HashMap::new())
}
pub fn iter(&mut self) -> DrainIter<'_> {
DrainIter(self.0.drain())
}
}
pub struct DrainIter<'a>(::std::collections::hash_map::Drain<'a, PathBuf, Entry>);
impl<'a> Iterator for DrainIter<'a> {
type Item = (PathBuf, Entry);
fn next(&mut self) -> Option<Self::Item> {
self.0.next()
}
}
#[cfg(test)]
mod test {
use std::path::PathBuf;
use super::FileAbstractionInstance;
use super::inmemory::InMemoryFileAbstraction;
use super::inmemory::InMemoryFileAbstractionInstance;
use crate::storeid::StoreIdWithBase;
use crate::store::Entry;
#[test]
fn lazy_file() {
let store_path = PathBuf::from("/");
let fs = InMemoryFileAbstraction::default();
let mut path = PathBuf::from("tests");
path.set_file_name("test1");
let mut lf = InMemoryFileAbstractionInstance::new(fs.backend().clone(), path.clone());
let loca = StoreIdWithBase::new(&store_path, path);
let file = Entry::from_str(loca.clone(), &format!(r#"---
[imag]
version = "{}"
---
Hello World"#, env!("CARGO_PKG_VERSION"))).unwrap();
lf.write_file_content(&file).unwrap();
let bah = lf.get_file_content(loca).unwrap().unwrap();
assert_eq!(bah.get_content(), "Hello World");
}
#[test]
fn lazy_file_multiline() {
let store_path = PathBuf::from("/");
let fs = InMemoryFileAbstraction::default();
let mut path = PathBuf::from("tests");
path.set_file_name("test1");
let mut lf = InMemoryFileAbstractionInstance::new(fs.backend().clone(), path.clone());
let loca = StoreIdWithBase::new(&store_path, path);
let file = Entry::from_str(loca.clone(), &format!(r#"---
[imag]
version = "{}"
---
Hello World
baz"#, env!("CARGO_PKG_VERSION"))).unwrap();
lf.write_file_content(&file).unwrap();
let bah = lf.get_file_content(loca).unwrap().unwrap();
assert_eq!(bah.get_content(), "Hello World\nbaz");
}
#[test]
fn lazy_file_multiline_trailing_newlines() {
let store_path = PathBuf::from("/");
let fs = InMemoryFileAbstraction::default();
let mut path = PathBuf::from("tests");
path.set_file_name("test1");
let mut lf = InMemoryFileAbstractionInstance::new(fs.backend().clone(), path.clone());
let loca = StoreIdWithBase::new(&store_path, path);
let file = Entry::from_str(loca.clone(), &format!(r#"---
[imag]
version = "{}"
---
Hello World
baz
"#, env!("CARGO_PKG_VERSION"))).unwrap();
lf.write_file_content(&file).unwrap();
let bah = lf.get_file_content(loca).unwrap().unwrap();
assert_eq!(bah.get_content(), "Hello World\nbaz\n\n");
}
}
|
