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Deserialize Cargo.toml without spawning cargo metadata command

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David Tolnay 2023-07-16 13:38:42 -07:00
parent 737293417b
commit 58201ca96b
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GPG key ID: F9BA143B95FF6D82
1 changed files with 18 additions and 8 deletions
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26
src/main.rs
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@ -36,6 +36,7 @@ use bat::{PagingMode, PrettyPrinter};
use clap::{Parser, ValueEnum};
use is_terminal::IsTerminal;
use quote::quote;
use serde::Deserialize;
use std::env;
use std::ffi::OsString;
use std::fs;
@ -313,8 +314,8 @@ fn apply_args(cmd: &mut Command, args: &Expand, color: &Coloring, outfile: &Path
}
if !has_explicit_build_target {
if let Ok(cargo_metadata) = cargo_metadata(args.manifest_path.as_deref()) {
if let Some(root_package) = cargo_metadata.root_package() {
if let Ok(cargo_manifest) = cargo_manifest(args.manifest_path.as_deref()) {
if let Some(root_package) = cargo_manifest.package {
if let Some(default_run) = &root_package.default_run {
line.arg("--bin");
line.arg(default_run);
@ -500,13 +501,22 @@ fn get_color(args: &Expand, config: &Config) -> Coloring {
Coloring::Auto // default
}
fn cargo_metadata(
manifest_path: Option<&Path>,
) -> cargo_metadata::Result<cargo_metadata::Metadata> {
let mut cmd = cargo_metadata::MetadataCommand::new();
#[derive(Deserialize, Debug)]
struct CargoManifest {
package: Option<CargoPackage>,
}
#[derive(Deserialize, Debug)]
struct CargoPackage {
#[serde(rename = "default-run")]
default_run: Option<String>,
}
fn cargo_manifest(manifest_path: Option<&Path>) -> Result<CargoManifest> {
let manifest_path = find_cargo_manifest(manifest_path)?;
cmd.manifest_path(manifest_path);
cmd.exec()
let content = fs::read_to_string(&manifest_path)?;
let cargo_manifest: CargoManifest = toml::from_str(&content)?;
Ok(cargo_manifest)
}
fn find_cargo_manifest(manifest_path: Option<&Path>) -> io::Result<PathBuf> {