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
|
use crate::engine::{StateWorkingSet, VirtualPath};
use std::{
ffi::OsStr,
path::{Path, PathBuf},
};
/// An abstraction over a PathBuf that can have virtual paths (files and directories). Virtual
/// paths always exist and represent a way to ship Nushell code inside the binary without requiring
/// paths to be present in the file system.
///
/// Created from VirtualPath found in the engine state.
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
pub enum ParserPath {
RealPath(PathBuf),
VirtualFile(PathBuf, usize),
VirtualDir(PathBuf, Vec<ParserPath>),
}
impl ParserPath {
pub fn is_dir(&self) -> bool {
match self {
ParserPath::RealPath(p) => p.is_dir(),
ParserPath::VirtualFile(..) => false,
ParserPath::VirtualDir(..) => true,
}
}
pub fn is_file(&self) -> bool {
match self {
ParserPath::RealPath(p) => p.is_file(),
ParserPath::VirtualFile(..) => true,
ParserPath::VirtualDir(..) => false,
}
}
pub fn exists(&self) -> bool {
match self {
ParserPath::RealPath(p) => p.exists(),
ParserPath::VirtualFile(..) => true,
ParserPath::VirtualDir(..) => true,
}
}
pub fn path(&self) -> &Path {
match self {
ParserPath::RealPath(p) => p,
ParserPath::VirtualFile(p, _) => p,
ParserPath::VirtualDir(p, _) => p,
}
}
pub fn path_buf(self) -> PathBuf {
match self {
ParserPath::RealPath(p) => p,
ParserPath::VirtualFile(p, _) => p,
ParserPath::VirtualDir(p, _) => p,
}
}
pub fn parent(&self) -> Option<&Path> {
match self {
ParserPath::RealPath(p) => p.parent(),
ParserPath::VirtualFile(p, _) => p.parent(),
ParserPath::VirtualDir(p, _) => p.parent(),
}
}
pub fn read_dir(&self) -> Option<Vec<ParserPath>> {
match self {
ParserPath::RealPath(p) => p.read_dir().ok().map(|read_dir| {
read_dir
.flatten()
.map(|dir_entry| ParserPath::RealPath(dir_entry.path()))
.collect()
}),
ParserPath::VirtualFile(..) => None,
ParserPath::VirtualDir(_, files) => Some(files.clone()),
}
}
pub fn file_stem(&self) -> Option<&OsStr> {
self.path().file_stem()
}
pub fn extension(&self) -> Option<&OsStr> {
self.path().extension()
}
pub fn join(self, path: impl AsRef<Path>) -> ParserPath {
match self {
ParserPath::RealPath(p) => ParserPath::RealPath(p.join(path)),
ParserPath::VirtualFile(p, file_id) => ParserPath::VirtualFile(p.join(path), file_id),
ParserPath::VirtualDir(p, entries) => {
let new_p = p.join(path);
let mut pp = ParserPath::RealPath(new_p.clone());
for entry in entries {
if new_p == entry.path() {
pp = entry.clone();
}
}
pp
}
}
}
pub fn open<'a>(
&'a self,
working_set: &'a StateWorkingSet,
) -> std::io::Result<Box<dyn std::io::Read + 'a>> {
match self {
ParserPath::RealPath(p) => {
std::fs::File::open(p).map(|f| Box::new(f) as Box<dyn std::io::Read>)
}
ParserPath::VirtualFile(_, file_id) => working_set
.get_contents_of_file(*file_id)
.map(|bytes| Box::new(bytes) as Box<dyn std::io::Read>)
.ok_or(std::io::ErrorKind::NotFound.into()),
ParserPath::VirtualDir(..) => Err(std::io::ErrorKind::NotFound.into()),
}
}
pub fn read<'a>(&'a self, working_set: &'a StateWorkingSet) -> Option<Vec<u8>> {
self.open(working_set)
.and_then(|mut reader| {
let mut vec = vec![];
reader.read_to_end(&mut vec)?;
Ok(vec)
})
.ok()
}
pub fn from_virtual_path(
working_set: &StateWorkingSet,
name: &str,
virtual_path: &VirtualPath,
) -> Self {
match virtual_path {
VirtualPath::File(file_id) => ParserPath::VirtualFile(PathBuf::from(name), *file_id),
VirtualPath::Dir(entries) => ParserPath::VirtualDir(
PathBuf::from(name),
entries
.iter()
.map(|virtual_path_id| {
let (virt_name, virt_path) = working_set.get_virtual_path(*virtual_path_id);
ParserPath::from_virtual_path(working_set, virt_name, virt_path)
})
.collect(),
),
}
}
}
|
