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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
use crate::deno_error;
use crate::fs as deno_fs;
use crate::msg;
use crate::ops::empty_buf;
use crate::ops::ok_buf;
use crate::ops::serialize_response;
use crate::ops::CliOpResult;
use crate::resources;
use crate::state::ThreadSafeState;
use deno::*;
use flatbuffers::FlatBufferBuilder;
use futures::Future;
use std;
use std::convert::From;
use tokio;
pub fn op_open(
state: &ThreadSafeState,
base: &msg::Base<'_>,
data: Option<PinnedBuf>,
) -> CliOpResult {
assert!(data.is_none());
let cmd_id = base.cmd_id();
let inner = base.inner_as_open().unwrap();
let (filename, filename_) =
deno_fs::resolve_from_cwd(inner.filename().unwrap())?;
let mode = inner.mode().unwrap();
let mut open_options = tokio::fs::OpenOptions::new();
match mode {
"r" => {
open_options.read(true);
}
"r+" => {
open_options.read(true).write(true);
}
"w" => {
open_options.create(true).write(true).truncate(true);
}
"w+" => {
open_options
.read(true)
.create(true)
.write(true)
.truncate(true);
}
"a" => {
open_options.create(true).append(true);
}
"a+" => {
open_options.read(true).create(true).append(true);
}
"x" => {
open_options.create_new(true).write(true);
}
"x+" => {
open_options.create_new(true).read(true).write(true);
}
&_ => {
panic!("Unknown file open mode.");
}
}
match mode {
"r" => {
state.check_read(&filename_)?;
}
"w" | "a" | "x" => {
state.check_write(&filename_)?;
}
&_ => {
state.check_read(&filename_)?;
state.check_write(&filename_)?;
}
}
let op = open_options.open(filename).map_err(ErrBox::from).and_then(
move |fs_file| {
let resource = resources::add_fs_file(fs_file);
let builder = &mut FlatBufferBuilder::new();
let inner =
msg::OpenRes::create(builder, &msg::OpenResArgs { rid: resource.rid });
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::OpenRes,
..Default::default()
},
))
},
);
if base.sync() {
let buf = op.wait()?;
Ok(Op::Sync(buf))
} else {
Ok(Op::Async(Box::new(op)))
}
}
pub fn op_close(
_state: &ThreadSafeState,
base: &msg::Base<'_>,
data: Option<PinnedBuf>,
) -> CliOpResult {
assert!(data.is_none());
let inner = base.inner_as_close().unwrap();
let rid = inner.rid();
match resources::lookup(rid) {
None => Err(deno_error::bad_resource()),
Some(resource) => {
resource.close();
ok_buf(empty_buf())
}
}
}
pub fn op_seek(
_state: &ThreadSafeState,
base: &msg::Base<'_>,
data: Option<PinnedBuf>,
) -> CliOpResult {
assert!(data.is_none());
let inner = base.inner_as_seek().unwrap();
let rid = inner.rid();
let offset = inner.offset();
let whence = inner.whence();
match resources::lookup(rid) {
None => Err(deno_error::bad_resource()),
Some(resource) => {
let op = resources::seek(resource, offset, whence)
.and_then(move |_| Ok(empty_buf()));
if base.sync() {
let buf = op.wait()?;
Ok(Op::Sync(buf))
} else {
Ok(Op::Async(Box::new(op)))
}
}
}
}
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