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https://github.com/ClementTsang/bottom.git
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other: clarify config file creation logic/code (#1518)
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@ -12,8 +12,8 @@ If no config file argument is given, it will automatically look for a config fil
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| Linux | `~/.config/bottom/bottom.toml` <br/> `$XDG_CONFIG_HOME/bottom/bottom.toml` |
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| Windows | `C:\Users\<USER>\AppData\Roaming\bottom\bottom.toml` |
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Like if a path is passed with `-C`/`--config`, if a file doesn't exist at the path, bottom will automatically create a
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new, default config file at that location.
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If the config file doesn't exist at the path, bottom will automatically try to create a new config file at the location
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with default values.
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## JSON Schema
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18
src/main.rs
18
src/main.rs
@ -27,7 +27,6 @@ use std::{
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boxed::Box,
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io::{stderr, stdout, Write},
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panic::{self, PanicInfo},
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path::Path,
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sync::{
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mpsc::{self, Receiver, Sender},
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Arc, Condvar, Mutex,
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@ -36,7 +35,6 @@ use std::{
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time::{Duration, Instant},
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};
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use anyhow::Context;
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use app::{layout_manager::UsedWidgets, App, AppConfigFields, DataFilters};
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use crossterm::{
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event::{
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@ -49,7 +47,7 @@ use crossterm::{
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};
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use data_conversion::*;
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use event::{handle_key_event_or_break, handle_mouse_event, BottomEvent, CollectionThreadEvent};
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use options::{args, get_config_path, get_or_create_config, init_app};
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use options::{args, get_or_create_config, init_app};
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use tui::{backend::CrosstermBackend, Terminal};
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#[allow(unused_imports)]
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use utils::logging::*;
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@ -330,18 +328,8 @@ fn main() -> anyhow::Result<()> {
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}
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// Read from config file.
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let config = {
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let config_path = get_config_path(args.general.config_location.as_deref());
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get_or_create_config(config_path.as_deref()).with_context(|| {
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format!(
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"Unable to parse or create the config file at: {}",
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config_path
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.as_deref()
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.unwrap_or_else(|| Path::new("<failed locating>"))
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.display()
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)
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})?
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};
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let config = get_or_create_config(args.general.config_location.as_deref())?;
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// Create the "app" and initialize a bunch of stuff.
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let (mut app, widget_layout, styling) = init_app(args, config)?;
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@ -68,7 +68,7 @@ macro_rules! is_flag_enabled {
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///
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/// For more details on this, see [dirs](https://docs.rs/dirs/latest/dirs/fn.config_dir.html)'
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/// documentation.
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pub fn get_config_path(override_config_path: Option<&Path>) -> Option<PathBuf> {
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fn get_config_path(override_config_path: Option<&Path>) -> Option<PathBuf> {
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const DEFAULT_CONFIG_FILE_PATH: &str = "bottom/bottom.toml";
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if let Some(conf_loc) = override_config_path {
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@ -92,29 +92,73 @@ pub fn get_config_path(override_config_path: Option<&Path>) -> Option<PathBuf> {
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})
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}
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fn create_config_at_path(path: &Path) -> anyhow::Result<Config> {
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if let Some(parent_path) = path.parent() {
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fs::create_dir_all(parent_path)?;
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}
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let mut file = fs::File::create(path)?;
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file.write_all(CONFIG_TEXT.as_bytes())?;
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Ok(Config::default())
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}
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/// Get the config at `config_path`. If there is no config file at the specified
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/// path, it will try to create a new file with the default settings, and return
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/// the default config. If bottom fails to write a new config, it will silently
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/// just return the default config.
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pub fn get_or_create_config(config_path: Option<&Path>) -> OptionResult<Config> {
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match &config_path {
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/// the default config.
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///
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/// We're going to use the following behaviour on when we'll return an error rather
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/// than just "silently" continuing on:
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/// - If the user passed in a path explicitly, then we will be loud and error out.
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/// - If the user does NOT pass in a path explicitly, then just show a warning,
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/// but continue. This is in case they do not want to write a default config file at
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/// the XDG locations, for example.
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pub fn get_or_create_config(config_path: Option<&Path>) -> anyhow::Result<Config> {
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let adjusted_config_path = get_config_path(config_path);
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match &adjusted_config_path {
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Some(path) => {
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if let Ok(config_string) = fs::read_to_string(path) {
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Ok(toml_edit::de::from_str(&config_string)?)
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} else {
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if let Some(parent_path) = path.parent() {
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fs::create_dir_all(parent_path)?;
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}
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match create_config_at_path(path) {
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Ok(cfg) => Ok(cfg),
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Err(err) => {
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if config_path.is_some() {
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Err(err.context(format!(
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"bottom could not create a new config file at '{}'.",
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path.display()
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)))
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} else {
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indoc::eprintdoc!(
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"Note: bottom couldn't create a default config file at '{}', and the \
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application has fallen back to the default configuration.
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Caused by:
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{err}
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",
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path.display()
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);
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fs::File::create(path)?.write_all(CONFIG_TEXT.as_bytes())?;
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Ok(Config::default())
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Ok(Config::default())
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}
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}
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}
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}
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}
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None => {
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// If we somehow don't have any config path, then just assume the default config
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// but don't write to any file.
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//
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// TODO: Maybe make this "show" an error, but don't crash.
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// TODO: For now, just print a message to stderr indicating this. In the future,
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// probably show in-app (too).
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eprintln!(
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"Note: bottom couldn't find a location to create or read a config file, so \
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the application has fallen back to the default configuration. \
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This could be for a variety of reasons, such as issues with file permissions."
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);
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Ok(Config::default())
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}
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}
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