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denoland-deno/cli/ops/os.rs
2020-04-27 18:00:19 -04:00

190 lines
4.8 KiB
Rust

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
use super::dispatch_json::{Deserialize, JsonOp, Value};
use crate::op_error::OpError;
use crate::state::State;
use deno_core::CoreIsolate;
use deno_core::ZeroCopyBuf;
use std::collections::HashMap;
use std::env;
use std::io::{Error, ErrorKind};
use url::Url;
pub fn init(i: &mut CoreIsolate, s: &State) {
i.register_op("op_exit", s.stateful_json_op(op_exit));
i.register_op("op_env", s.stateful_json_op(op_env));
i.register_op("op_exec_path", s.stateful_json_op(op_exec_path));
i.register_op("op_set_env", s.stateful_json_op(op_set_env));
i.register_op("op_get_env", s.stateful_json_op(op_get_env));
i.register_op("op_get_dir", s.stateful_json_op(op_get_dir));
i.register_op("op_hostname", s.stateful_json_op(op_hostname));
i.register_op("op_loadavg", s.stateful_json_op(op_loadavg));
i.register_op("op_os_release", s.stateful_json_op(op_os_release));
}
#[derive(Deserialize)]
struct GetDirArgs {
kind: std::string::String,
}
fn op_get_dir(
state: &State,
args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, OpError> {
state.check_unstable("Deno.dir");
state.check_env()?;
let args: GetDirArgs = serde_json::from_value(args)?;
let path = match args.kind.as_str() {
"home" => dirs::home_dir(),
"config" => dirs::config_dir(),
"cache" => dirs::cache_dir(),
"executable" => dirs::executable_dir(),
"data" => dirs::data_dir(),
"data_local" => dirs::data_local_dir(),
"audio" => dirs::audio_dir(),
"desktop" => dirs::desktop_dir(),
"document" => dirs::document_dir(),
"download" => dirs::download_dir(),
"font" => dirs::font_dir(),
"picture" => dirs::picture_dir(),
"public" => dirs::public_dir(),
"template" => dirs::template_dir(),
"tmp" => Some(std::env::temp_dir()),
"video" => dirs::video_dir(),
_ => {
return Err(
Error::new(
ErrorKind::InvalidInput,
format!("Invalid dir type `{}`", args.kind.as_str()),
)
.into(),
)
}
};
if path == None {
Err(OpError::not_found(format!(
"Could not get user {} directory.",
args.kind.as_str()
)))
} else {
Ok(JsonOp::Sync(json!(path
.unwrap_or_default()
.into_os_string()
.into_string()
.unwrap_or_default())))
}
}
fn op_exec_path(
state: &State,
_args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, OpError> {
state.check_env()?;
let current_exe = env::current_exe().unwrap();
// Now apply URL parser to current exe to get fully resolved path, otherwise
// we might get `./` and `../` bits in `exec_path`
let exe_url = Url::from_file_path(current_exe).unwrap();
let path = exe_url.to_file_path().unwrap();
Ok(JsonOp::Sync(json!(path)))
}
#[derive(Deserialize)]
struct SetEnv {
key: String,
value: String,
}
fn op_set_env(
state: &State,
args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, OpError> {
let args: SetEnv = serde_json::from_value(args)?;
state.check_env()?;
env::set_var(args.key, args.value);
Ok(JsonOp::Sync(json!({})))
}
fn op_env(
state: &State,
_args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, OpError> {
state.check_env()?;
let v = env::vars().collect::<HashMap<String, String>>();
Ok(JsonOp::Sync(json!(v)))
}
#[derive(Deserialize)]
struct GetEnv {
key: String,
}
fn op_get_env(
state: &State,
args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, OpError> {
let args: GetEnv = serde_json::from_value(args)?;
state.check_env()?;
let r = match env::var(args.key) {
Err(env::VarError::NotPresent) => json!([]),
v => json!([v?]),
};
Ok(JsonOp::Sync(r))
}
#[derive(Deserialize)]
struct Exit {
code: i32,
}
fn op_exit(
_s: &State,
args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, OpError> {
let args: Exit = serde_json::from_value(args)?;
std::process::exit(args.code)
}
fn op_loadavg(
state: &State,
_args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, OpError> {
state.check_unstable("Deno.loadavg");
state.check_env()?;
match sys_info::loadavg() {
Ok(loadavg) => Ok(JsonOp::Sync(json!([
loadavg.one,
loadavg.five,
loadavg.fifteen
]))),
Err(_) => Ok(JsonOp::Sync(json!([0f64, 0f64, 0f64]))),
}
}
fn op_hostname(
state: &State,
_args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, OpError> {
state.check_env()?;
let hostname = sys_info::hostname().unwrap_or_else(|_| "".to_string());
Ok(JsonOp::Sync(json!(hostname)))
}
fn op_os_release(
state: &State,
_args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, OpError> {
state.check_unstable("Deno.osRelease");
state.check_env()?;
let release = sys_info::os_release().unwrap_or_else(|_| "".to_string());
Ok(JsonOp::Sync(json!(release)))
}