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use crate::utils;
use std::env;
use dirs::home_dir;
use toml::value::Table;
pub trait Config {
fn initialize() -> Table;
fn config_from_file() -> Option<Table>;
fn get_module_config(&self, module_name: &str) -> Option<&Table>;
// Config accessor methods
fn get_as_bool(&self, key: &str) -> Option<bool>;
fn get_as_str(&self, key: &str) -> Option<&str>;
// Internal implementation for accessors
fn get_config(&self, key: &str) -> Option<&toml::value::Value>;
}
impl Config for Table {
/// Initialize the Config struct
fn initialize() -> Table {
if let Some(file_data) = Table::config_from_file() {
return file_data;
}
Table::new()
}
/// Create a config from a starship configuration file
fn config_from_file() -> Option<Table> {
let file_path = match env::var("STARSHIP_CONFIG") {
Ok(path) => {
// Use $STARSHIP_CONFIG as the config path if available
log::debug!("STARSHIP_CONFIG is set: \n{}", &path);
path
}
Err(_) => {
// Default to using ~/.config/starhip.toml
log::debug!("STARSHIP_CONFIG is not set");
let config_path = home_dir()?.join(".config/starship.toml");
let config_path_str = config_path.to_str()?.to_owned();
log::debug!("Using default config path: {}", config_path_str);
config_path_str
}
};
let toml_content = match utils::read_file(&file_path) {
Ok(content) => {
log::trace!("Config file content: \n{}", &content);
Some(content)
}
Err(e) => {
log::debug!("Unable to read config file content: \n{}", &e);
None
}
}?;
let config = toml::from_str(&toml_content).ok()?;
log::debug!("Config parsed: \n{:?}", &config);
Some(config)
}
/// Get the subset of the table for a module by its name
fn get_module_config(&self, module_name: &str) -> Option<&toml::value::Table> {
let module_config = self
.get(module_name)
.map(toml::Value::as_table)
.unwrap_or(None);
if module_config.is_some() {
log::debug!(
"Config found for \"{}\": \n{:?}",
&module_name,
&module_config
);
} else {
log::trace!("No config found for \"{}\"", &module_name);
}
module_config
}
/// Get the config value for a given key
fn get_config(&self, key: &str) -> Option<&toml::value::Value> {
log::trace!("Looking for config key \"{}\"", key);
let config_value = self.get(key);
if config_value.is_some() {
log::trace!("Config found for \"{}\": {:?}", key, &config_value);
} else {
log::trace!("No value found for \"{}\"", key);
}
config_value
}
/// Get a key from a module's configuration as a boolean
fn get_as_bool(&self, key: &str) -> Option<bool> {
let value = self.get_config(key)?;
let bool_value = value.as_bool();
if bool_value.is_none() {
log::debug!(
"Expected \"{}\" to be a boolean. Instead received {} of type {}.",
key,
value,
value.type_str()
);
}
bool_value
}
/// Get a key from a module's configuration as a string
fn get_as_str(&self, key: &str) -> Option<&str> {
let value = self.get_config(key)?;
let str_value = value.as_str();
if str_value.is_none() {
log::debug!(
"Expected \"{}\" to be a string. Instead received {} of type {}.",
key,
value,
value.type_str()
);
}
str_value
}
}
mod tests {
use super::*;
#[test]
fn table_get_as_bool() {
let mut table = toml::value::Table::new();
// Use with boolean value
table.insert(String::from("boolean"), toml::value::Value::Boolean(true));
assert_eq!(table.get_as_bool("boolean"), Some(true));
// Use with string value
table.insert(
String::from("string"),
toml::value::Value::String(String::from("true")),
);
assert_eq!(table.get_as_bool("string"), None);
}
#[test]
fn table_get_as_str() {
let mut table = toml::value::Table::new();
// Use with string value
table.insert(
String::from("string"),
toml::value::Value::String(String::from("hello")),
);
assert_eq!(table.get_as_str("string"), Some("hello"));
// Use with boolean value
table.insert(String::from("boolean"), toml::value::Value::Boolean(true));
assert_eq!(table.get_as_str("boolean"), None);
}
}
|
