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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
use super::dispatch_json::{Deserialize, JsonOp, Value};
use crate::ops::json_op;
use crate::state::State;
use atty;
use deno_core::*;
use std::collections::HashMap;
use std::env;
use std::io::{Error, ErrorKind};
use sys_info;
use url::Url;
pub fn init(i: &mut Isolate, s: &State) {
i.register_op("exit", s.core_op(json_op(s.stateful_op(op_exit))));
i.register_op("is_tty", s.core_op(json_op(s.stateful_op(op_is_tty))));
i.register_op("env", s.core_op(json_op(s.stateful_op(op_env))));
i.register_op("exec_path", s.core_op(json_op(s.stateful_op(op_exec_path))));
i.register_op("set_env", s.core_op(json_op(s.stateful_op(op_set_env))));
i.register_op("get_env", s.core_op(json_op(s.stateful_op(op_get_env))));
i.register_op("get_dir", s.core_op(json_op(s.stateful_op(op_get_dir))));
i.register_op("hostname", s.core_op(json_op(s.stateful_op(op_hostname))));
}
#[derive(Deserialize)]
struct GetDirArgs {
kind: std::string::String,
}
fn op_get_dir(
state: &State,
args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, ErrBox> {
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(),
"video" => dirs::video_dir(),
_ => {
return Err(ErrBox::from(Error::new(
ErrorKind::InvalidInput,
format!("Invalid dir type `{}`", args.kind.as_str()),
)))
}
};
if path == None {
Err(ErrBox::from(Error::new(
ErrorKind::NotFound,
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, ErrBox> {
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, ErrBox> {
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, ErrBox> {
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, ErrBox> {
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, ErrBox> {
let args: Exit = serde_json::from_value(args)?;
std::process::exit(args.code)
}
fn op_is_tty(
_s: &State,
_args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, ErrBox> {
Ok(JsonOp::Sync(json!({
"stdin": atty::is(atty::Stream::Stdin),
"stdout": atty::is(atty::Stream::Stdout),
"stderr": atty::is(atty::Stream::Stderr),
})))
}
fn op_hostname(
state: &State,
_args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, ErrBox> {
state.check_env()?;
let hostname = sys_info::hostname().unwrap_or_else(|_| "".to_owned());
Ok(JsonOp::Sync(json!(hostname)))
}
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