2024-02-28 16:30:48 +08:00

206 lines
6.8 KiB
Rust

// SPDX-License-Identifier: MPL-2.0
use std::{
ffi::OsStr,
fs,
path::{Path, PathBuf},
process,
str::FromStr,
};
use crate::{
cli::NewArgs,
error::Errno,
error_msg,
util::{cargo_new_lib, get_cargo_metadata, ASTER_FRAME_DEP, KTEST_DEP},
};
pub fn execute_new_command(args: &NewArgs) {
cargo_new_lib(&args.crate_name);
let cargo_metadata = get_cargo_metadata(Some(&args.crate_name), None::<&[&str]>).unwrap();
add_manifest_dependencies(&cargo_metadata, &args.crate_name);
create_osdk_manifest(&cargo_metadata);
if args.kernel {
write_kernel_template(&cargo_metadata, &args.crate_name);
} else {
write_library_template(&cargo_metadata, &args.crate_name);
}
add_rust_toolchain(&cargo_metadata);
}
/// OSDK assumes that the toolchain used by the kernel should be same same as the toolchain
/// specified in the asterinas workspace.
fn aster_rust_toolchain() -> &'static str {
include_str!("../../../../rust-toolchain.toml")
}
fn add_manifest_dependencies(cargo_metadata: &serde_json::Value, crate_name: &str) {
let mainfest_path = get_manifest_path(cargo_metadata, crate_name);
let mut manifest: toml::Table = {
let content = fs::read_to_string(mainfest_path).unwrap();
toml::from_str(&content).unwrap()
};
let dependencies = manifest.get_mut("dependencies").unwrap();
let aster_frame_dep = toml::Table::from_str(ASTER_FRAME_DEP).unwrap();
dependencies.as_table_mut().unwrap().extend(aster_frame_dep);
let ktest_dep = toml::Table::from_str(KTEST_DEP).unwrap();
dependencies.as_table_mut().unwrap().extend(ktest_dep);
// If we created a workspace by `osdk new`, we should exclude the `base` crate from the workspace.
if get_cargo_metadata::<&Path, &OsStr>(None, None).is_none() {
let exclude = toml::Table::from_str(r#"exclude = ["target/osdk/base"]"#).unwrap();
manifest.insert("workspace".to_string(), toml::Value::Table(exclude));
}
let content = toml::to_string(&manifest).unwrap();
fs::write(mainfest_path, content).unwrap();
}
fn create_osdk_manifest(cargo_metadata: &serde_json::Value) {
let osdk_manifest_path = {
let workspace_root = get_workspace_root(cargo_metadata);
PathBuf::from(workspace_root).join("OSDK.toml")
};
if osdk_manifest_path.is_file() {
// If the OSDK.toml of workspace exists, just return.
return;
}
// Create `OSDK.toml` for the workspace
// FIXME: we need ovmf for grub-efi, the user may not have it.
// The apt OVMF repo installs to `/usr/share/OVMF`
fs::write(
osdk_manifest_path,
r#"\
[boot]
ovmf = "/usr/share/OVMF"
[qemu]
machine = "q35"
args = [
"--no-reboot",
"-m 2G",
"-nographic",
"-serial chardev:mux",
"-monitor chardev:mux",
"-chardev stdio,id=mux,mux=on,signal=off",
"-display none",
"-device isa-debug-exit,iobase=0xf4,iosize=0x04",
]
"#,
)
.unwrap();
}
/// Write the default content of `src/kernel.rs`, with contents in provided template.
fn write_kernel_template(cargo_metadata: &serde_json::Value, crate_name: &str) {
let src_path = get_src_path(cargo_metadata, crate_name);
let contents = include_str!("kernel.template");
fs::write(src_path, contents).unwrap();
}
/// Write the default content of `src/lib.rs`, with contents in provided template.
fn write_library_template(cargo_metadata: &serde_json::Value, crate_name: &str) {
let src_path = get_src_path(cargo_metadata, crate_name);
let contents = include_str!("lib.template");
fs::write(src_path, contents).unwrap();
}
/// Add the rust-toolchain.toml file in workspace root
fn add_rust_toolchain(cargo_metadata: &serde_json::Value) {
let workspace_root = get_workspace_root(cargo_metadata);
let rust_toolchain_path = PathBuf::from(workspace_root).join("rust-toolchain.toml");
if let Ok(true) = rust_toolchain_path.try_exists() {
let toolchain = {
let content = fs::read_to_string(&rust_toolchain_path).unwrap();
toml::Table::from_str(&content).unwrap()
};
check_rust_toolchain(&toolchain);
return;
}
let contents = aster_rust_toolchain();
fs::write(rust_toolchain_path, contents).unwrap();
}
fn get_manifest_path<'a>(cargo_metadata: &'a serde_json::Value, crate_name: &str) -> &'a str {
let metadata = get_package_metadata(cargo_metadata, crate_name);
metadata.get("manifest_path").unwrap().as_str().unwrap()
}
fn get_src_path<'a>(cargo_metadata: &'a serde_json::Value, crate_name: &str) -> &'a str {
let metadata = get_package_metadata(cargo_metadata, crate_name);
let targets = metadata.get("targets").unwrap().as_array().unwrap();
for target in targets {
let name = target.get("name").unwrap().as_str().unwrap();
if name != crate_name {
continue;
}
let src_path = target.get("src_path").unwrap();
return src_path.as_str().unwrap();
}
panic!("the crate name does not match with any target");
}
fn get_workspace_root(cargo_metadata: &serde_json::Value) -> &str {
let workspace_root = cargo_metadata.get("workspace_root").unwrap();
workspace_root.as_str().unwrap()
}
fn get_package_metadata<'a>(
cargo_metadata: &'a serde_json::Value,
crate_name: &str,
) -> &'a serde_json::Value {
let packages = cargo_metadata.get("packages").unwrap();
let package_metadatas = packages.as_array().unwrap();
for package_metadata in package_metadatas {
let name = package_metadata.get("name").unwrap().as_str().unwrap();
if crate_name == name {
return package_metadata;
}
}
panic!("cannot find metadata of the crate")
}
fn check_rust_toolchain(toolchain: &toml::Table) {
let expected = {
let contents = aster_rust_toolchain();
toml::Table::from_str(contents).unwrap()
};
let expected = expected.get("toolchain").unwrap().as_table().unwrap();
let toolchain = toolchain.get("toolchain").unwrap().as_table().unwrap();
let channel = toolchain.get("channel").unwrap().as_str().unwrap();
let expected_channel = expected.get("channel").unwrap().as_str().unwrap();
if channel != expected_channel {
error_msg!("The current version of rust-toolchain.toml is not compatible with the osdk");
process::exit(Errno::AddRustToolchain as _);
}
let components = toolchain.get("components").unwrap().as_array().unwrap();
let expected_components = toolchain.get("components").unwrap().as_array().unwrap();
for expected_component in expected_components {
if !components.contains(expected_component) {
error_msg!(
"rust-toolchain.toml does not contains {}",
expected_component.as_str().unwrap()
);
process::exit(Errno::AddRustToolchain as _);
}
}
}