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use std::fmt::{Debug, Formatter, Error};
use std::path::Path;
use config::reader::from_file;
use config::types::Config as Cfg;
use cli::CliConfig;
/**
* Configuration object which represents the configuration file.
*
* It gets passed a CliConfig object on ::new(), retreives some data from this one which is then
* provided as default value to the callee if there is no value for it in the configuration.
*
* TODO: Setup is kinda ugly, as we re-use data from the CLI, which is the job of the Runtime
* object later.
*/
pub struct Configuration {
pub rtp : String,
pub store_sub : String,
pub editor : Option<String>,
pub editor_opts : String,
pub report_exit : bool,
}
impl Configuration {
pub fn new(config: &CliConfig) -> Configuration {
let rtp = rtp_path(config).or(default_path()).unwrap_or(String::from("/tmp/"));
let cfg = fetch_config(&rtp);
let store_sub = String::from(cfg.lookup_str("store").unwrap_or("/store"));
let editor = cfg.lookup_str("editor").map(String::from);
let editor_opts = String::from(cfg.lookup_str("editor-opts").unwrap_or(""));
let report_exit = cfg.lookup_boolean("report-exit").unwrap_or(false);
debug!("Building configuration");
debug!(" - store sub : {}", store_sub);
debug!(" - runtimepath: {}", rtp);
debug!(" - editor : {:?}", editor);
debug!(" - editor-opts: {}", editor_opts);
debug!(" - report exit: {}", report_exit);
Configuration {
store_sub: store_sub,
rtp: rtp,
editor: editor,
editor_opts: editor_opts,
report_exit: report_exit,
}
}
/**
* Get the store path the configuration configured
*/
pub fn store_path(&self) -> String {
format!("{}{}", self.rtp, self.store_sub)
}
/**
* Get the runtime path the configuration configured
*/
pub fn get_rtp(&self) -> String {
self.rtp.clone()
}
pub fn editor(&self) -> Option<String> {
self.editor.clone()
}
pub fn editor_opts(&self) -> String {
self.editor_opts.clone()
}
pub fn report_exit(&self) -> bool {
self.report_exit
}
}
/**
* Helper to get the runtimepath from the CLI
*/
fn rtp_path(config: &CliConfig) -> Option<String> {
config.cli_matches.value_of("rtp")
.and_then(|s| Some(String::from(s)))
}
fn fetch_config(rtp: &String) -> Cfg {
use std::process::exit;
let configpath = format!("{}{}", rtp, "/config");
from_file(Path::new(&configpath)).map_err(|e| {
println!("Error loading config at '{}' -> {:?}", configpath, e);
println!("Exiting now.");
exit(1)
}).unwrap()
}
/**
* Default runtime path, if available.
*/
fn default_path() -> Option<String> {
use std::env::home_dir;
home_dir().and_then(|mut buf| {
buf.push("/.imag");
buf.to_str().map(|s| String::from(s))
})
}
impl Debug for Configuration {
fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
write!(f, "Configuration (rtp: {}, store path: {})",
self.get_rtp(),
self.store_path()
)
}
}
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