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
//!
//! Access to home and data folder (windows) when running natively or
//! within Node.js
//!
use cfg_if::cfg_if;
use std::path::PathBuf;
/// Returns the current user's home directory, resolved natively or via Node.js
/// (`os.homedir()`), or `None` if it cannot be determined.
pub fn home_dir() -> Option<PathBuf> {
cfg_if! {
if #[cfg(target_arch = "wasm32")] {
if crate::runtime::is_node() {
nodejs::home_dir()
} else {
panic!("workflow_core::dirs::home_dir() is not supported on this platform (must be native of nodejs)");
}
} else {
dirs::home_dir()
}
}
}
/// Returns the platform-appropriate user data directory (e.g. `LOCALAPPDATA`
/// on Windows), resolved natively or via Node.js, or `None` if undetermined.
pub fn data_dir() -> Option<PathBuf> {
cfg_if! {
if #[cfg(target_arch = "wasm32")] {
if crate::runtime::is_node() {
nodejs::data_dir()
} else {
panic!("workflow_core::dirs::home_dir() is not supported on this platform (must be native of nodejs)");
}
} else {
dirs::data_dir()
}
}
}
cfg_if! {
if #[cfg(target_arch = "wasm32")] {
mod nodejs {
use std::path::{Path,PathBuf};
use wasm_bindgen::prelude::*;
use js_sys::Reflect;
#[wasm_bindgen]
extern "C" {
pub fn require(s: &str) -> JsValue;
}
static mut HOME_DIR: Option<PathBuf> = None;
pub fn home_dir() -> Option<PathBuf> {
let home_dir_ptr = &raw mut HOME_DIR;
unsafe {
(*home_dir_ptr).get_or_insert_with(|| {
Reflect::get(&require("os"), &JsValue::from_str("homedir"))
.expect("Unable to get homedir")
.dyn_into::<js_sys::Function>()
.expect("os.homedir is not a function")
.call0(&JsValue::UNDEFINED)
.expect("Unable to get homedir")
.as_string()
.as_ref()
.map(Path::new)
.map(PathBuf::from)
.expect("Unable to get nodejs homedir")
});
(*home_dir_ptr).clone()
}
}
static mut DATA_DIR: Option<PathBuf> = None;
pub fn data_dir() -> Option<PathBuf> {
let data_dir_ptr = &raw mut DATA_DIR;
unsafe {
(*data_dir_ptr).get_or_insert_with(|| {
if crate::runtime::is_windows() {
crate::env::var("LOCALAPPDATA")
.ok()
.map(PathBuf::from)
.expect("Unable to get LOCALAPPDATA")
} else {
home_dir()
.expect("Unable to get nodejs data_dir (unable to get home_dir)")
}
});
(*data_dir_ptr).clone()
}
}
}
}
}