more_wallpapers/
error.rs

1#[cfg(target_os = "linux")]
2use std::env;
3use std::io;
4#[cfg(target_os = "linux")]
5use std::{ffi::OsString, process::Command};
6use thiserror::Error;
7
8#[cfg(target_os = "linux")]
9use serde_json;
10#[cfg(target_os = "linux")]
11use xrandr;
12
13#[cfg(target_os = "linux")]
14#[derive(Debug, Error)]
15pub enum CommandError {
16	#[cfg(target_os = "linux")]
17	#[error("failed to execute program {0:?}: {1}")]
18	CommandIO(OsString, std::io::Error),
19
20	#[cfg(target_os = "linux")]
21	#[error("{command:?} exit with code {exit_code:?}:\n{}", String::from_utf8_lossy(.stderr))]
22	CommandStatus {
23		command: Command,
24		exit_code: Option<i32>,
25		stderr: Vec<u8>,
26	},
27}
28
29#[derive(Debug, Error)]
30#[non_exhaustive]
31pub enum WallpaperError {
32	#[cfg(target_os = "linux")]
33	#[error("unsupported Desktop Environment {0:?}")]
34	Unsuported(String),
35
36	#[cfg(target_os = "linux")]
37	#[error("can not read Environment Variable {0:?}: {1}")]
38	EnvVar(&'static str, env::VarError),
39
40	#[cfg(target_os = "linux")]
41	#[error("Dbus error: {0}")]
42	Dbus(#[from] rustbus::connection::Error),
43
44	#[cfg(target_os = "linux")]
45	#[error("failed to serialize json output: {0}")]
46	SerdeJson(#[from] serde_json::Error),
47
48	#[cfg(target_os = "linux")]
49	#[error("xrandr  erro): {0}")]
50	Xrandr(#[from] xrandr::XrandrError),
51
52	#[cfg(target_os = "linux")]
53	#[error("{0}")]
54	Command(#[from] CommandError),
55
56	#[cfg(feature = "fallback")]
57	#[error("{0}")]
58	WallpaperCrate(#[from] fallback::Error),
59
60	#[error("{0:?} {1}")]
61	IOError(String, io::Error),
62
63	#[cfg(target_os = "linux")]
64	#[error("Unknow XFCE wallpaper mode {0:?}")]
65	UnknownMode(String),
66}
67
68pub(crate) trait Context<V> {
69	fn context<C>(self, context: C) -> Result<V, WallpaperError>
70	where
71		C: std::fmt::Display;
72}
73
74/// add path as additional info to erro and convert it to a [WallpaperError].
75impl<V> Context<V> for Result<V, io::Error> {
76	fn context<C>(self, context: C) -> Result<V, WallpaperError>
77	where
78		C: std::fmt::Display,
79	{
80		self.map_err(|error| WallpaperError::IOError(context.to_string(), error))
81	}
82}
83
84#[cfg(target_os = "linux")]
85pub(crate) fn load_env_var(key: &'static str) -> Result<String, WallpaperError> {
86	std::env::var(key).map_err(|err| WallpaperError::EnvVar(key, err))
87}
more_wallpapers/error.rs

more_wallpapers/
error.rs
