zint/
lookup.rs

1//! Binary lookup util
2
3use anyhow::Result;
4use serde::Deserialize;
5use std::{fs, path::PathBuf};
6
7/// Cargo Manifest for parsing package.
8#[derive(Deserialize)]
9struct Manifest {
10    /// The package.
11    pub package: Package,
12}
13
14/// Cargo Package for parsing package name.
15#[derive(Deserialize)]
16struct Package {
17    /// Package name.
18    pub name: String,
19}
20
21/// Get the name of the current package.
22pub fn pkg_name() -> Result<String> {
23    let manifest = fs::read_to_string(etc::find_up("Cargo.toml")?)?;
24    Ok(toml::from_str::<Manifest>(&manifest)?.package.name)
25}
26
27/// Get the wasm binary of the provided name from the target directory.
28pub fn wasm(name: &str) -> Result<PathBuf> {
29    let target = target_dir()?;
30    let search = |profile: &str| -> Result<PathBuf> {
31        let target = target.join(profile);
32        let mut wasm = target.join(name).with_extension("wasm");
33        if !wasm.exists() {
34            wasm = target.join("examples").join(name).with_extension("wasm");
35        }
36
37        if wasm.exists() {
38            Ok(wasm)
39        } else {
40            Err(anyhow::anyhow!("{} not found", wasm.to_string_lossy()))
41        }
42    };
43
44    search("release").or_else(|_| search("debug"))
45}
46
47/// Get the current target directory.
48fn target_dir() -> Result<PathBuf> {
49    cargo_metadata::MetadataCommand::new()
50        .no_deps()
51        .exec()
52        .map_err(Into::into)
53        .map(|metadata| {
54            metadata
55                .target_directory
56                .join("wasm32-unknown-unknown")
57                .into()
58        })
59}
zint/lookup.rs

zint/
lookup.rs
