mii/wasmer
1
0
Fork 0
mirror of https://github.com/mii443/wasmer.git synced 2025-12-07 21:28:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

Update clap, rewrite main CLI logic

Browse Source
This commit is contained in:
Felix Schütt
2022-10-04 10:32:57 +02:00
parent 250811aed5
commit 6cd80f4937
18 changed files with 126 additions and 211 deletions
Download Patch File Download Diff File Expand all files Collapse all files

242
lib/cli/src/cli.rs
View File

@@ -14,195 +14,73 @@ use crate::commands::{Cache, Config, Inspect, Run, SelfUpdate, Validate};
use crate::error::PrettyError;
use anyhow::Result;
use clap::{ErrorKind, Parser};
#[derive(Parser)]
#[cfg_attr(
not(feature = "headless"),
clap(
name = "wasmer",
about = "WebAssembly standalone runtime.",
version,
author
)
)]
#[cfg_attr(
feature = "headless",
clap(
name = "wasmer-headless",
about = "WebAssembly standalone runtime (headless).",
version,
author
)
)]
/// The options for the wasmer Command Line Interface
enum WasmerCLIOptions {
/// Run a WebAssembly file. Formats accepted: wasm, wat
#[clap(name = "run")]
Run(Run),
/// Wasmer cache
#[clap(subcommand, name = "cache")]
Cache(Cache),
/// Validate a WebAssembly binary
#[clap(name = "validate")]
Validate(Validate),
/// Compile a WebAssembly binary
#[cfg(feature = "compiler")]
#[clap(name = "compile")]
Compile(Compile),
/// Compile a WebAssembly binary into a native executable
///
/// To use, you need to set the `WASMER_DIR` environment variable
/// to the location of your Wasmer installation. This will probably be `~/.wasmer`. It
/// should include a `lib`, `include` and `bin` subdirectories. To create an executable
/// you will need `libwasmer`, so by setting `WASMER_DIR` the CLI knows where to look for
/// header files and libraries.
///
/// Example usage:
///
/// ```text
/// $ # in two lines:
/// $ export WASMER_DIR=/home/user/.wasmer/
/// $ wasmer create-exe qjs.wasm -o qjs.exe # or in one line:
/// $ WASMER_DIR=/home/user/.wasmer/ wasmer create-exe qjs.wasm -o qjs.exe
/// $ file qjs.exe
/// qjs.exe: ELF 64-bit LSB pie executable, x86-64 ...
/// ```
///
/// ## Cross-compilation
///
/// Accepted target triple values must follow the
/// ['target_lexicon'](https://crates.io/crates/target-lexicon) crate format.
///
/// The recommended targets we try to support are:
///
/// - "x86_64-linux-gnu"
/// - "aarch64-linux-gnu"
/// - "x86_64-apple-darwin"
/// - "arm64-apple-darwin"
#[cfg(any(feature = "static-artifact-create", feature = "wasmer-artifact-create"))]
#[clap(name = "create-exe", verbatim_doc_comment)]
CreateExe(CreateExe),
/// Compile a WebAssembly binary into an object file
///
/// To use, you need to set the `WASMER_DIR` environment variable to the location of your
/// Wasmer installation. This will probably be `~/.wasmer`. It should include a `lib`,
/// `include` and `bin` subdirectories. To create an object you will need `libwasmer`, so by
/// setting `WASMER_DIR` the CLI knows where to look for header files and libraries.
///
/// Example usage:
///
/// ```text
/// $ # in two lines:
/// $ export WASMER_DIR=/home/user/.wasmer/
/// $ wasmer create-obj qjs.wasm --object-format symbols -o qjs.obj # or in one line:
/// $ WASMER_DIR=/home/user/.wasmer/ wasmer create-exe qjs.wasm --object-format symbols -o qjs.obj
/// $ file qjs.obj
/// qjs.obj: ELF 64-bit LSB relocatable, x86-64 ...
/// ```
///
/// ## Cross-compilation
///
/// Accepted target triple values must follow the
/// ['target_lexicon'](https://crates.io/crates/target-lexicon) crate format.
///
/// The recommended targets we try to support are:
///
/// - "x86_64-linux-gnu"
/// - "aarch64-linux-gnu"
/// - "x86_64-apple-darwin"
/// - "arm64-apple-darwin"
#[cfg(feature = "static-artifact-create")]
#[structopt(name = "create-obj", verbatim_doc_comment)]
CreateObj(CreateObj),
/// Get various configuration information needed
/// to compile programs which use Wasmer
#[clap(name = "config")]
Config(Config),
/// Update wasmer to the latest version
#[clap(name = "self-update")]
SelfUpdate(SelfUpdate),
/// Inspect a WebAssembly file
#[clap(name = "inspect")]
Inspect(Inspect),
/// Run spec testsuite
#[cfg(feature = "wast")]
#[clap(name = "wast")]
Wast(Wast),
/// Unregister and/or register wasmer as binfmt interpreter
#[cfg(target_os = "linux")]
#[clap(name = "binfmt")]
Binfmt(Binfmt),
}
impl WasmerCLIOptions {
fn execute(&self) -> Result<()> {
match self {
Self::Run(options) => options.execute(),
Self::SelfUpdate(options) => options.execute(),
Self::Cache(cache) => cache.execute(),
Self::Validate(validate) => validate.execute(),
#[cfg(feature = "compiler")]
Self::Compile(compile) => compile.execute(),
#[cfg(any(feature = "static-artifact-create", feature = "wasmer-artifact-create"))]
Self::CreateExe(create_exe) => create_exe.execute(),
#[cfg(feature = "static-artifact-create")]
Self::CreateObj(create_obj) => create_obj.execute(),
Self::Config(config) => config.execute(),
Self::Inspect(inspect) => inspect.execute(),
#[cfg(feature = "wast")]
Self::Wast(wast) => wast.execute(),
#[cfg(target_os = "linux")]
Self::Binfmt(binfmt) => binfmt.execute(),
}
}
}
/// The main function for the Wasmer CLI tool.
pub fn wasmer_main() {
// We allow windows to print properly colors
#[cfg(windows)]
colored::control::set_virtual_terminal(true).unwrap();
// We try to run wasmer with the normal arguments.
// Eg. `wasmer <SUBCOMMAND>`
// In case that fails, we fallback trying the Run subcommand directly.
// Eg. `wasmer myfile.wasm --dir=.`
//
// In case we've been run as wasmer-binfmt-interpreter myfile.wasm args,
// we assume that we're registered via binfmt_misc
let cmd_output = parse_cli_args();
PrettyError::report(cmd_output);
}
fn parse_cli_args() -> Result<(), anyhow::Error> {
let args = std::env::args().collect::<Vec<_>>();
let binpath = args.get(0).map(|s| s.as_ref()).unwrap_or("");
let command = args.get(1);
let options = if cfg!(target_os = "linux") && binpath.ends_with("wasmer-binfmt-interpreter") {
WasmerCLIOptions::Run(Run::from_binfmt_args())
} else {
match command.unwrap_or(&"".to_string()).as_ref() {
"cache" | "compile" | "config" | "create-exe" | "help" | "inspect" | "run"
| "self-update" | "validate" | "wast" | "binfmt" => WasmerCLIOptions::parse(),
_ => {
WasmerCLIOptions::try_parse_from(args.iter()).unwrap_or_else(|e| {
match e.kind() {
// This fixes a issue that:
// 1. Shows the version twice when doing `wasmer -V`
// 2. Shows the run help (instead of normal help) when doing `wasmer --help`
ErrorKind::DisplayVersion | ErrorKind::DisplayHelp => e.exit(),
_ => WasmerCLIOptions::Run(Run::parse()),
}
})
}
}
};
PrettyError::report(options.execute());
// In case we've been run as wasmer-binfmt-interpreter myfile.wasm args,
// we assume that we're registered via binfmt_misc
if cfg!(target_os = "linux") && binpath.ends_with("wasmer-binfmt-interpreter") {
return Run::from_binfmt_args().execute();
}
match (args.get(1).map(|s| s.as_str()), args.get(2).map(|s| s.as_str())) {
(None, _) |
(Some("help"), _) |
(Some("--help"), _) => return print_help(),
(Some("-vV"), _) |
(Some("version"), Some("--verbose")) |
(Some("--version"), Some("--verbose")) => return print_version(false),
(Some("-v"), _) |
(Some("version"), _) |
(Some("--version"), _) => return print_version(false),
(Some("cache"), Some(_)) |
(Some("compile"), Some(_)) |
(Some("config"), Some(_)) |
(Some("create-exe"), Some(_)) |
(Some("inspect"), Some(_)) |
(Some("self-update"), _) |
(Some("validate"), Some(_)) |
(Some("wast"), Some(_)) |
(Some("binfmt"), Some(_)) => {
println!("running {:?}", args.get(1));
return Ok(())
},
(Some("run"), Some(_)) |
(Some(_), _) => {
use clap::Parser;
// wasmer run file
// wasmer run [package]
if let Ok(run) = Run::try_parse() {
return run.execute();
} else {
return print_help();
}
},
}
}
fn print_help() -> Result<(), anyhow::Error>{
println!("help");
Ok(())
}
fn print_version(_: bool) -> Result<(), anyhow::Error> {
println!("version");
Ok(())
}