37 lines
1.3 KiB
Rust
37 lines
1.3 KiB
Rust
#[cfg(unix)]
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use std::{io, path::Path};
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#[cfg(unix)]
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use anyhow::{Context, Result};
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use serde::Deserialize;
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#[cfg(unix)]
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use crate::utils;
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#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Default)]
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pub struct FallbackSettings {
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pub default_toolchain: Option<String>,
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}
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impl FallbackSettings {
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#[cfg(unix)]
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pub(crate) fn new<P: AsRef<Path>>(path: P) -> Result<Option<Self>> {
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// Users cannot fix issues with missing/unreadable/invalid centralised files, but logging isn't setup early so
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// we can't simply trap all errors and log diagnostics. Ideally we would, and then separate these into different
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// sorts of issues, logging messages about errors that should be fixed. Instead we trap some conservative errors
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// that hopefully won't lead to too many tickets.
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match utils::read_file("fallback settings", path.as_ref()) {
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Err(e) => match e.downcast_ref::<io::Error>() {
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Some(io_err) => match io_err.kind() {
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io::ErrorKind::NotFound | io::ErrorKind::PermissionDenied => Ok(None),
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_ => Err(e),
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},
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None => Err(e),
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},
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Ok(file_contents) => Ok(Some(
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toml::from_str(&file_contents).context("error parsing settings")?,
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)),
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}
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}
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}
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