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use rustc_serialize::{Decoder, Decodable};
use rustc_serialize::json::Json;
use std::process::Command;
use std::str::FromStr;
use datatype::Error;
#[derive(PartialEq, Eq, Debug, Clone)]
pub struct SystemInfo {
command: String
}
impl SystemInfo {
pub fn new(command: String) -> SystemInfo {
SystemInfo { command: command }
}
pub fn report(&self) -> Result<Json, Error> {
Command::new(&self.command)
.output().map_err(|err| Error::SystemInfo(err.to_string()))
.and_then(|info| String::from_utf8(info.stdout).map_err(Error::FromUtf8))
.and_then(|text| Json::from_str(&text).map_err(Error::JsonParser))
}
}
impl Default for SystemInfo {
fn default() -> SystemInfo {
SystemInfo::new("system_info.sh".to_string())
}
}
impl FromStr for SystemInfo {
type Err = Error;
fn from_str(s: &str) -> Result<SystemInfo, Error> {
Ok(SystemInfo::new(s.to_string()))
}
}
impl Decodable for SystemInfo {
fn decode<D: Decoder>(d: &mut D) -> Result<SystemInfo, D::Error> {
d.read_str().and_then(|s| Ok(s.parse::<SystemInfo>().unwrap()))
}
}
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