dave
53 lines
2.0 KiB
Rust
53 lines
2.0 KiB
Rust
//! Settings I/O — the ONLY place in `service/settings/` that may perform side effects.
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//!
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//! Side effects here include: reading/writing `.huskies/project.toml` and
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//! spawning the editor process via `std::process::Command`.
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//! All business logic, branching, and type definitions belong in `mod.rs`,
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//! `project.rs`, or `validate.rs`.
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use super::Error;
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use std::path::Path;
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/// Read the raw TOML content from `config_path`.
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///
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/// Returns an empty string if the file does not exist yet, so callers can
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/// treat a missing config the same as an empty one.
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///
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/// # Errors
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/// - [`Error::Io`] if the file exists but cannot be read.
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pub(super) fn read_config_toml(config_path: &Path) -> Result<String, Error> {
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if config_path.exists() {
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std::fs::read_to_string(config_path).map_err(|e| Error::Io(format!("Read config: {e}")))
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} else {
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Ok(String::new())
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}
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}
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/// Write `content` to `config_path`, creating parent directories as needed.
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///
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/// # Errors
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/// - [`Error::Io`] if the directory cannot be created or the file write fails.
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pub(super) fn write_config_toml(config_path: &Path, content: &str) -> Result<(), Error> {
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if let Some(parent) = config_path.parent() {
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std::fs::create_dir_all(parent)
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.map_err(|e| Error::Io(format!("Create .huskies dir: {e}")))?;
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}
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std::fs::write(config_path, content).map_err(|e| Error::Io(format!("Write config: {e}")))
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}
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/// Spawn the editor process with `file_ref` as the sole argument.
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///
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/// Does not wait for the editor to exit — fire-and-forget so the UI remains
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/// responsive.
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///
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/// # Errors
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/// - [`Error::SpawnError`] if the operating system cannot start the process
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/// (e.g. the editor binary is not on `$PATH`).
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pub(super) fn spawn_editor(editor_command: &str, file_ref: &str) -> Result<(), Error> {
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std::process::Command::new(editor_command)
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.arg(file_ref)
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.spawn()
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.map(|_| ())
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.map_err(|e| Error::Spawn(format!("Failed to open editor: {e}")))
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}
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