61 lines
1.9 KiB
Rust
61 lines
1.9 KiB
Rust
use std::fs::{read_to_string, File};
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use std::io::{ErrorKind, Write};
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use std::path::Path;
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use anyhow::{bail, Context, Result};
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use serde_derive::{Deserialize, Serialize};
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/// Config for the program, as listed in `$XDG_CONFIG_HOME/pacdef/pacdef.yaml`.
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#[derive(Debug, Serialize, Deserialize)]
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pub struct Config {
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/// The AUR helper to use for Arch Linux.
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pub aur_helper: String,
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/// Additional arguments to pass to `aur_helper` when removing a package.
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pub aur_rm_args: Option<Vec<String>>,
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/// Warn the user when a group is not a symlink.
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pub warn_not_symlinks: bool,
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}
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impl Config {
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/// Load the config from the associated file. If the config does not exist, create a default
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/// config.
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pub fn load(config_file: &Path) -> Result<Self> {
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let from_file = read_to_string(config_file);
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if let Err(e) = from_file {
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if e.kind() == ErrorKind::NotFound {
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println!(
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"creating default config under {}",
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config_file.to_string_lossy()
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);
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return Self::use_default_and_save_to(config_file);
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}
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bail!("unexpected error occured: {e:?}");
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}
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let content = from_file.expect("we already handled that error");
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serde_yaml::from_str(&content).context("parsing yaml config")
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}
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fn use_default_and_save_to(file: &Path) -> Result<Self> {
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let result = Self::default();
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let content = serde_yaml::to_string(&result).context("converting Config to yaml")?;
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let mut output = File::create(file).context("creating default config file")?;
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write!(output, "{content}").context("writing default config")?;
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Ok(result)
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}
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}
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impl Default for Config {
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fn default() -> Self {
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Self {
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aur_helper: "paru".into(),
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aur_rm_args: None,
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warn_not_symlinks: true,
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}
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}
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}
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