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use std::fs;
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use std::io::Read;
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use cargo_metadata::Message;
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use clap::{Args, Parser, Subcommand};
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use crate::{build_3dsx, build_smdh, get_metadata, link, CTRConfig};
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#[derive(Parser, Debug)]
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#[command(name = "cargo", bin_name = "cargo")]
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pub enum Cargo {
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#[command(name = "3ds")]
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Input(Input),
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}
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#[derive(Args, Debug)]
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#[command(version, about)]
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pub struct Input {
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#[command(subcommand)]
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pub cmd: CargoCmd,
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}
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/// Run a cargo command. COMMAND will be forwarded to the real
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/// `cargo` with the appropriate arguments for the 3DS target.
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///
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/// If an unrecognized COMMAND is used, it will be passed through unmodified
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/// to `cargo` with the appropriate flags set for the 3DS target.
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#[derive(Subcommand, Debug)]
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#[command(allow_external_subcommands = true)]
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pub enum CargoCmd {
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/// Builds an executable suitable to run on a 3DS (3dsx).
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Build(Build),
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/// Builds an executable and sends it to a device with `3dslink`.
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Run(Run),
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/// Builds a test executable and sends it to a device with `3dslink`.
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///
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/// This can be used with `--test` for integration tests, or `--lib` for
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/// unit tests (which require a custom test runner).
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Test(Test),
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/// Sets up a new cargo project suitable to run on a 3DS.
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New(New),
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// NOTE: it seems docstring + name for external subcommands are not rendered
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// in help, but we might as well set them here in case a future version of clap
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// does include them in help text.
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/// Run any other `cargo` command with custom building tailored for the 3DS.
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#[command(external_subcommand, name = "COMMAND")]
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Passthrough(Vec<String>),
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}
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#[derive(Args, Debug)]
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pub struct RemainingArgs {
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/// Pass additional options through to the `cargo` command.
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///
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/// All arguments after the first `--`, or starting with the first unrecognized
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/// option, will be passed through to `cargo` unmodified.
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///
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/// To pass arguments to an executable being run, a *second* `--` must be
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/// used to disambiguate cargo arguments from executable arguments.
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/// For example, `cargo 3ds run -- -- xyz` runs an executable with the argument
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/// `xyz`.
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#[arg(trailing_var_arg = true)]
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#[arg(allow_hyphen_values = true)]
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#[arg(global = true)]
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#[arg(name = "CARGO_ARGS")]
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args: Vec<String>,
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}
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#[derive(Parser, Debug)]
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pub struct Build {
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// Passthrough cargo options.
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#[command(flatten)]
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pub cargo_args: RemainingArgs,
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}
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#[derive(Parser, Debug)]
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pub struct Run {
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/// Specify the IP address of the device to send the executable to.
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///
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/// Corresponds to 3dslink's `--address` arg, which defaults to automatically
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/// finding the device.
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#[arg(long, short = 'a')]
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pub address: Option<std::net::Ipv4Addr>,
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/// Set the 0th argument of the executable when running it. Corresponds to
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/// 3dslink's `--argv0` argument.
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#[arg(long, short = '0')]
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pub argv0: Option<String>,
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/// Start the 3dslink server after sending the executable. Corresponds to
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/// 3dslink's `--server` argument.
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#[arg(long, short = 's', default_value_t = false)]
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pub server: bool,
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/// Set the number of tries when connecting to the device to send the executable.
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/// Corresponds to 3dslink's `--retries` argument.
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// Can't use `short = 'r'` because that would conflict with cargo's `--release/-r`
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#[arg(long)]
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pub retries: Option<usize>,
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// Passthrough `cargo build` options.
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#[command(flatten)]
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pub build_args: Build,
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}
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#[derive(Parser, Debug)]
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pub struct Test {
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/// If set, the built executable will not be sent to the device to run it.
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#[arg(long)]
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pub no_run: bool,
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/// If set, documentation tests will be built instead of unit tests.
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/// This implies `--no-run`.
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#[arg(long)]
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pub doc: bool,
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// The test command uses a superset of the same arguments as Run.
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#[command(flatten)]
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pub run_args: Run,
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}
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#[derive(Parser, Debug)]
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pub struct New {
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/// Path of the new project.
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#[arg(required = true)]
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pub path: String,
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// The test command uses a superset of the same arguments as Run.
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#[command(flatten)]
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pub cargo_args: RemainingArgs,
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}
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impl CargoCmd {
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/// Returns the additional arguments run by the "official" cargo subcommand.
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pub fn cargo_args(&self) -> Vec<String> {
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match self {
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CargoCmd::Build(build) => build.cargo_args.cargo_args(),
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CargoCmd::Run(run) => run.build_args.cargo_args.cargo_args(),
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CargoCmd::Test(test) => {
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let mut cargo_args = test.run_args.build_args.cargo_args.cargo_args();
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// We can't run 3DS executables on the host, so unconditionally pass
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// --no-run here and send the executable with 3dslink later, if the
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// user wants
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if test.doc {
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eprintln!("Documentation tests requested, no 3dsx will be built or run");
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// https://github.com/rust-lang/cargo/issues/7040
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cargo_args.append(&mut vec![
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"--doc".to_string(),
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"-Z".to_string(),
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"doctest-xcompile".to_string(),
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]);
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} else {
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cargo_args.push("--no-run".to_string());
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}
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cargo_args
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}
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CargoCmd::New(new) => {
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// We push the original path in the new command (we captured it in [`New`] to learn about the context)
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let mut cargo_args = new.cargo_args.cargo_args();
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cargo_args.push(new.path.clone());
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cargo_args
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}
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CargoCmd::Passthrough(other) => other.clone().split_off(1),
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}
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}
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/// Returns the cargo subcommand run by `cargo-3ds` when handling a [`CargoCmd`].
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///
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/// # Notes
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///
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/// This is not equivalent to the lowercase name of the [`CargoCmd`] variant.
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/// Commands may use different commands under the hood to function (e.g. [`CargoCmd::Run`] uses `build`).
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pub fn subcommand_name(&self) -> &str {
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match self {
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CargoCmd::Build(_) | CargoCmd::Run(_) => "build",
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CargoCmd::Test(_) => "test",
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CargoCmd::New(_) => "new",
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CargoCmd::Passthrough(cmd) => &cmd[0],
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}
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}
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/// Whether or not this command should compile any code, and thus needs import the custom environment configuration (e.g. target spec).
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pub fn should_compile(&self) -> bool {
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matches!(
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self,
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Self::Build(_) | Self::Run(_) | Self::Test(_) | Self::Passthrough(_)
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)
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}
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/// Whether or not this command should build a 3DSX executable file.
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pub fn should_build_3dsx(&self) -> bool {
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matches!(
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self,
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Self::Build(_) | Self::Run(_) | Self::Test(Test { doc: false, .. })
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)
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}
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/// Whether or not the resulting executable should be sent to the 3DS with
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/// `3dslink`.
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pub fn should_link_to_device(&self) -> bool {
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match self {
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Self::Test(test) => !test.no_run,
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Self::Run(_) => true,
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_ => false,
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}
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}
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pub const DEFAULT_MESSAGE_FORMAT: &str = "json-render-diagnostics";
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pub fn extract_message_format(&mut self) -> Result<Option<String>, String> {
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let cargo_args = match self {
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Self::Build(build) => &mut build.cargo_args.args,
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Self::Run(run) => &mut run.build_args.cargo_args.args,
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Self::New(new) => &mut new.cargo_args.args,
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Self::Test(test) => &mut test.run_args.build_args.cargo_args.args,
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Self::Passthrough(args) => args,
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};
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let format = Self::extract_message_format_from_args(cargo_args)?;
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if format.is_some() {
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return Ok(format);
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}
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if let Self::Test(Test { doc: true, .. }) = self {
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// We don't care about JSON output for doctests since we're not
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// building any 3dsx etc. Just use the default output as it's more
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// readable compared to DEFAULT_MESSAGE_FORMAT
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Ok(Some(String::from("human")))
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} else {
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Ok(None)
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}
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}
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fn extract_message_format_from_args(
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cargo_args: &mut Vec<String>,
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) -> Result<Option<String>, String> {
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// Checks for a position within the args where '--message-format' is located
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if let Some(pos) = cargo_args
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.iter()
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.position(|s| s.starts_with("--message-format"))
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{
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// Remove the arg from list so we don't pass anything twice by accident
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let arg = cargo_args.remove(pos);
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// Allows for usage of '--message-format=<format>' and also using space separation.
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// Check for a '=' delimiter and use the second half of the split as the format,
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// otherwise remove next arg which is now at the same position as the original flag.
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let format = if let Some((_, format)) = arg.split_once('=') {
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format.to_string()
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} else {
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// Also need to remove the argument to the --message-format option
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cargo_args.remove(pos)
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};
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// Non-json formats are not supported so the executable exits.
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if format.starts_with("json") {
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Ok(Some(format))
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} else {
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Err(String::from(
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"error: non-JSON `message-format` is not supported",
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))
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}
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} else {
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Ok(None)
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}
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}
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/// Runs the custom callback *after* the cargo command, depending on the type of command launched.
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///
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/// # Examples
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///
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/// - `cargo 3ds build` and other "build" commands will use their callbacks to build the final `.3dsx` file and link it.
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/// - `cargo 3ds new` and other generic commands will use their callbacks to make 3ds-specific changes to the environment.
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pub fn run_callback(&self, messages: &[Message]) {
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// Process the metadata only for commands that have it/use it
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let config = if self.should_build_3dsx() {
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eprintln!("Getting metadata");
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get_metadata(messages)
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} else {
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CTRConfig::default()
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};
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// Run callback only for commands that use it
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match self {
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Self::Build(cmd) => cmd.callback(&config),
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Self::Run(cmd) => cmd.callback(&config),
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Self::Test(cmd) => cmd.callback(&config),
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Self::New(cmd) => cmd.callback(),
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_ => (),
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}
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}
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}
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impl RemainingArgs {
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/// Get the args to be passed to the executable itself (not `cargo`).
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pub fn cargo_args(&self) -> Vec<String> {
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self.split_args().0
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}
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/// Get the args to be passed to the executable itself (not `cargo`).
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pub fn exe_args(&self) -> Vec<String> {
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self.split_args().1
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}
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fn split_args(&self) -> (Vec<String>, Vec<String>) {
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let mut args = self.args.clone();
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if let Some(split) = args.iter().position(|s| s == "--") {
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let second_half = args.split_off(split + 1);
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(args, second_half)
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} else {
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(args, Vec::new())
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}
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}
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}
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impl Build {
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|
|
|
/// Callback for `cargo 3ds build`.
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///
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|
|
/// This callback handles building the application as a `.3dsx` file.
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|
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fn callback(&self, config: &CTRConfig) {
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eprintln!("Building smdh:{}", config.path_smdh().display());
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build_smdh(config);
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eprintln!("Building 3dsx: {}", config.path_3dsx().display());
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|
build_3dsx(config);
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}
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}
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|
|
impl Run {
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|
|
|
/// Get the args to pass to `3dslink` based on these options.
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|
|
pub fn get_3dslink_args(&self) -> Vec<String> {
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|
|
let mut args = Vec::new();
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if let Some(address) = self.address {
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args.extend(["--address".to_string(), address.to_string()]);
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}
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if let Some(argv0) = &self.argv0 {
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|
args.extend(["--arg0".to_string(), argv0.clone()]);
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|
}
|
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|
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|
|
if let Some(retries) = self.retries {
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|
|
args.extend(["--retries".to_string(), retries.to_string()]);
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|
}
|
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|
|
|
if self.server {
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|
|
args.push("--server".to_string());
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|
|
}
|
|
|
|
|
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|
|
let exe_args = self.build_args.cargo_args.exe_args();
|
|
|
|
if !exe_args.is_empty() {
|
|
|
|
// For some reason 3dslink seems to want 2 instances of `--`, one
|
|
|
|
// in front of all of the args like this...
|
|
|
|
args.extend(["--args".to_string(), "--".to_string()]);
|
|
|
|
|
|
|
|
let mut escaped = false;
|
|
|
|
for arg in exe_args.iter().cloned() {
|
|
|
|
if arg.starts_with('-') && !escaped {
|
|
|
|
// And one before the first `-` arg that is passed in.
|
|
|
|
args.extend(["--".to_string(), arg]);
|
|
|
|
escaped = true;
|
|
|
|
} else {
|
|
|
|
args.push(arg);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
args
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Callback for `cargo 3ds run`.
|
|
|
|
///
|
|
|
|
/// This callback handles launching the application via `3dslink`.
|
|
|
|
fn callback(&self, config: &CTRConfig) {
|
|
|
|
// Run the normal "build" callback
|
|
|
|
self.build_args.callback(config);
|
|
|
|
|
|
|
|
eprintln!("Running 3dslink");
|
|
|
|
link(config, self);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl Test {
|
|
|
|
/// Callback for `cargo 3ds test`.
|
|
|
|
///
|
|
|
|
/// This callback handles launching the application via `3dslink`.
|
|
|
|
fn callback(&self, config: &CTRConfig) {
|
|
|
|
if self.no_run {
|
|
|
|
// If the tests don't have to run, use the "build" callback
|
|
|
|
self.run_args.build_args.callback(config)
|
|
|
|
} else {
|
|
|
|
// If the tests have to run, use the "run" callback
|
|
|
|
self.run_args.callback(config)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
const TOML_CHANGES: &str = "ctru-rs = { git = \"https://github.com/rust3ds/ctru-rs\" }
|
|
|
|
|
|
|
|
[package.metadata.cargo-3ds]
|
|
|
|
romfs_dir = \"romfs\"
|
|
|
|
";
|
|
|
|
|
|
|
|
const CUSTOM_MAIN_RS: &str = "use ctru::prelude::*;
|
|
|
|
|
|
|
|
fn main() {
|
|
|
|
ctru::use_panic_handler();
|
|
|
|
|
|
|
|
let apt = Apt::new().unwrap();
|
|
|
|
let mut hid = Hid::new().unwrap();
|
|
|
|
let gfx = Gfx::new().unwrap();
|
|
|
|
let _console = Console::new(gfx.top_screen.borrow_mut());
|
|
|
|
|
|
|
|
println!(\"Hello, World!\");
|
|
|
|
println!(\"\\x1b[29;16HPress Start to exit\");
|
|
|
|
|
|
|
|
while apt.main_loop() {
|
|
|
|
gfx.wait_for_vblank();
|
|
|
|
|
|
|
|
hid.scan_input();
|
|
|
|
if hid.keys_down().contains(KeyPad::START) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
";
|
|
|
|
|
|
|
|
impl New {
|
|
|
|
/// Callback for `cargo 3ds new`.
|
|
|
|
///
|
|
|
|
/// This callback handles the custom environment modifications when creating a new 3DS project.
|
|
|
|
fn callback(&self) {
|
|
|
|
// Commmit changes to the project only if is meant to be a binary
|
|
|
|
if self.cargo_args.args.contains(&"--lib".to_string()) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Attain a canonicalised path for the new project and it's TOML manifest
|
|
|
|
let project_path = fs::canonicalize(&self.path).unwrap();
|
|
|
|
let toml_path = project_path.join("Cargo.toml");
|
|
|
|
let romfs_path = project_path.join("romfs");
|
|
|
|
let main_rs_path = project_path.join("src/main.rs");
|
|
|
|
|
|
|
|
// Create the "romfs" directory
|
|
|
|
fs::create_dir(romfs_path).unwrap();
|
|
|
|
|
|
|
|
// Read the contents of `Cargo.toml` to a string
|
|
|
|
let mut buf = String::new();
|
|
|
|
fs::File::open(&toml_path)
|
|
|
|
.unwrap()
|
|
|
|
.read_to_string(&mut buf)
|
|
|
|
.unwrap();
|
|
|
|
|
|
|
|
// Add the custom changes to the TOML
|
|
|
|
let buf = buf + TOML_CHANGES;
|
|
|
|
fs::write(&toml_path, buf).unwrap();
|
|
|
|
|
|
|
|
// Add the custom changes to the main.rs file
|
|
|
|
fs::write(main_rs_path, CUSTOM_MAIN_RS).unwrap();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(test)]
|
|
|
|
mod tests {
|
|
|
|
use super::*;
|
|
|
|
|
|
|
|
use clap::CommandFactory;
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn verify_app() {
|
|
|
|
Cargo::command().debug_assert();
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn extract_format() {
|
|
|
|
const CASES: &[(&[&str], Option<&str>)] = &[
|
|
|
|
(&["--foo", "--message-format=json", "bar"], Some("json")),
|
|
|
|
(&["--foo", "--message-format", "json", "bar"], Some("json")),
|
|
|
|
(
|
|
|
|
&[
|
|
|
|
"--foo",
|
|
|
|
"--message-format",
|
|
|
|
"json-render-diagnostics",
|
|
|
|
"bar",
|
|
|
|
],
|
|
|
|
Some("json-render-diagnostics"),
|
|
|
|
),
|
|
|
|
(
|
|
|
|
&["--foo", "--message-format=json-render-diagnostics", "bar"],
|
|
|
|
Some("json-render-diagnostics"),
|
|
|
|
),
|
|
|
|
(&["--foo", "bar"], None),
|
|
|
|
];
|
|
|
|
|
|
|
|
for (args, expected) in CASES {
|
|
|
|
let mut cmd = CargoCmd::Build(Build {
|
|
|
|
cargo_args: RemainingArgs {
|
|
|
|
args: args.iter().map(ToString::to_string).collect(),
|
|
|
|
},
|
|
|
|
});
|
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
cmd.extract_message_format().unwrap(),
|
|
|
|
expected.map(ToString::to_string)
|
|
|
|
);
|
|
|
|
|
|
|
|
if let CargoCmd::Build(build) = cmd {
|
|
|
|
assert_eq!(build.cargo_args.args, vec!["--foo", "bar"]);
|
|
|
|
} else {
|
|
|
|
unreachable!();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn extract_format_err() {
|
|
|
|
for args in [&["--message-format=foo"][..], &["--message-format", "foo"]] {
|
|
|
|
let mut cmd = CargoCmd::Build(Build {
|
|
|
|
cargo_args: RemainingArgs {
|
|
|
|
args: args.iter().map(ToString::to_string).collect(),
|
|
|
|
},
|
|
|
|
});
|
|
|
|
|
|
|
|
assert!(cmd.extract_message_format().is_err());
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn split_run_args() {
|
|
|
|
struct TestParam {
|
|
|
|
input: &'static [&'static str],
|
|
|
|
expected_cargo: &'static [&'static str],
|
|
|
|
expected_exe: &'static [&'static str],
|
|
|
|
}
|
|
|
|
|
|
|
|
for param in [
|
|
|
|
TestParam {
|
|
|
|
input: &["--example", "hello-world", "--no-default-features"],
|
|
|
|
expected_cargo: &["--example", "hello-world", "--no-default-features"],
|
|
|
|
expected_exe: &[],
|
|
|
|
},
|
|
|
|
TestParam {
|
|
|
|
input: &["--example", "hello-world", "--", "--do-stuff", "foo"],
|
|
|
|
expected_cargo: &["--example", "hello-world", "--"],
|
|
|
|
expected_exe: &["--do-stuff", "foo"],
|
|
|
|
},
|
|
|
|
TestParam {
|
|
|
|
input: &["--lib", "--", "foo"],
|
|
|
|
expected_cargo: &["--lib", "--"],
|
|
|
|
expected_exe: &["foo"],
|
|
|
|
},
|
|
|
|
TestParam {
|
|
|
|
input: &["foo", "--", "bar"],
|
|
|
|
expected_cargo: &["foo", "--"],
|
|
|
|
expected_exe: &["bar"],
|
|
|
|
},
|
|
|
|
] {
|
|
|
|
let Run { build_args, .. } =
|
|
|
|
Run::parse_from(std::iter::once(&"run").chain(param.input));
|
|
|
|
|
|
|
|
assert_eq!(build_args.cargo_args.cargo_args(), param.expected_cargo);
|
|
|
|
assert_eq!(build_args.cargo_args.exe_args(), param.expected_exe);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|