mirror of
https://github.com/fluencelabs/wasm-bindgen
synced 2025-05-29 05:31:22 +00:00
cb9c9fb011
This shaves a little over 2MB off the download locally for Linux, removing debuginfo (which no one's probably gonna use anyway) as well as switching from jemalloc to the system allocator.
107 lines
3.1 KiB
Rust
107 lines
3.1 KiB
Rust
extern crate wasm_bindgen_cli_support;
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#[macro_use]
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extern crate serde_derive;
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extern crate docopt;
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extern crate wasm_bindgen_shared;
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#[macro_use]
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extern crate failure;
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use std::path::PathBuf;
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use std::process;
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use docopt::Docopt;
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use failure::Error;
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use wasm_bindgen_cli_support::Bindgen;
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// no need for jemalloc bloat in this binary (and we don't need speed)
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#[global_allocator]
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static ALLOC: std::alloc::System = std::alloc::System;
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const USAGE: &'static str = "
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Generating JS bindings for a wasm file
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Usage:
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wasm-bindgen [options] <input>
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wasm-bindgen -h | --help
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wasm-bindgen -V | --version
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Options:
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-h --help Show this screen.
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--out-dir DIR Output directory
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--nodejs Generate output that only works in node.js
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--browser Generate output that only works in a browser
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--no-modules Generate output that only works in a browser (without modules)
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--no-modules-global VAR Name of the global variable to initialize
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--typescript Output a TypeScript definition file (on by default)
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--no-typescript Don't emit a *.d.ts file
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--debug Include otherwise-extraneous debug checks in output
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--no-demangle Don't demangle Rust symbol names
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--keep-debug Keep debug sections in wasm files
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-V --version Print the version number of wasm-bindgen
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";
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#[derive(Debug, Deserialize)]
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struct Args {
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flag_nodejs: bool,
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flag_browser: bool,
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flag_no_modules: bool,
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flag_typescript: bool,
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flag_no_typescript: bool,
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flag_out_dir: Option<PathBuf>,
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flag_debug: bool,
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flag_version: bool,
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flag_no_demangle: bool,
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flag_no_modules_global: Option<String>,
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flag_keep_debug: bool,
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arg_input: Option<PathBuf>,
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}
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fn main() {
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let args: Args = Docopt::new(USAGE)
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.and_then(|d| d.deserialize())
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.unwrap_or_else(|e| e.exit());
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if args.flag_version {
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println!("wasm-bindgen {}", wasm_bindgen_shared::version());
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return;
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}
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let err = match rmain(&args) {
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Ok(()) => return,
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Err(e) => e,
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};
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eprintln!("error: {}", err);
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for cause in err.iter_causes() {
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eprintln!("\tcaused by: {}", cause);
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}
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process::exit(1);
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}
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fn rmain(args: &Args) -> Result<(), Error> {
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let input = match args.arg_input {
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Some(ref s) => s,
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None => bail!("input file expected"),
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};
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let typescript = args.flag_typescript || !args.flag_no_typescript;
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let mut b = Bindgen::new();
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b.input_path(input)
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.nodejs(args.flag_nodejs)
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.browser(args.flag_browser)
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.no_modules(args.flag_no_modules)
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.debug(args.flag_debug)
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.demangle(!args.flag_no_demangle)
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.keep_debug(args.flag_keep_debug)
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.typescript(typescript);
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if let Some(ref name) = args.flag_no_modules_global {
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b.no_modules_global(name);
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}
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let out_dir = match args.flag_out_dir {
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Some(ref p) => p,
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None => bail!("the `--out-dir` argument is now required"),
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};
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b.generate(out_dir)
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}
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