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use std::path::PathBuf;
use serde::Serialize;
pub type BinaryName = String;
pub type BinaryTargetPath = PathBuf;
pub struct ProjectSolveResult {
pub target_dir: PathBuf,
pub workspace_root: PathBuf,
pub binaries: Vec<BinaryItem>,
}
#[derive(Debug, Serialize)]
pub struct BinaryItem {
pub name: String,
pub path: PathBuf,
}
pub fn solve_current_dir() -> Result<ProjectSolveResult, std::io::Error> {
let current = std::env::current_dir()?;
solve(current)
}
pub fn solve(current: PathBuf) -> Result<ProjectSolveResult, std::io::Error> {
let (target_dir, workspace_root, binaries) = solve_inner(¤t)?;
Ok(ProjectSolveResult {
target_dir,
workspace_root,
binaries,
})
}
fn solve_inner(current: &PathBuf) -> Result<(PathBuf, PathBuf, Vec<BinaryItem>), std::io::Error> {
let output = std::process::Command::new("cargo")
.arg("metadata")
.arg("--format-version")
.arg("1")
.current_dir(current)
.output()?;
if !output.status.success() {
let stderr = String::from_utf8_lossy(&output.stderr);
return Err(std::io::Error::new(
std::io::ErrorKind::Other,
format!("cargo metadata failed: {}", stderr),
));
}
let metadata: serde_json::Value = serde_json::from_slice(&output.stdout)
.map_err(|e| std::io::Error::new(std::io::ErrorKind::InvalidData, e))?;
let workspace_root_str = metadata["workspace_root"].as_str().ok_or_else(|| {
std::io::Error::new(std::io::ErrorKind::InvalidData, "missing workspace_root")
})?;
let workspace_root = PathBuf::from(workspace_root_str);
let target_dir_str = metadata["target_directory"].as_str().ok_or_else(|| {
std::io::Error::new(std::io::ErrorKind::InvalidData, "missing target_directory")
})?;
let target_dir = PathBuf::from(target_dir_str);
let packages = metadata["packages"].as_array().ok_or_else(|| {
std::io::Error::new(std::io::ErrorKind::InvalidData, "missing packages array")
})?;
let mut binaries = Vec::new();
let cargo_toml_path = workspace_root.join("Cargo.toml");
// Find the package whose manifest_path matches workspace_root/Cargo.toml
for pkg in packages {
let manifest_path = pkg["manifest_path"].as_str().ok_or_else(|| {
std::io::Error::new(std::io::ErrorKind::InvalidData, "missing manifest_path")
})?;
let manifest_path_buf = PathBuf::from(manifest_path);
if manifest_path_buf == cargo_toml_path {
// Found the workspace root package
if let Some(targets) = pkg["targets"].as_array() {
for target in targets {
let kind = target["kind"].as_array();
let is_bin = kind
.map(|k| k.iter().any(|v| v.as_str() == Some("bin")))
.unwrap_or(false);
if is_bin {
let name = target["name"].as_str().ok_or_else(|| {
std::io::Error::new(
std::io::ErrorKind::InvalidData,
"missing target name",
)
})?;
let mut binary_path = target_dir.join("release").join(name);
if cfg!(target_os = "windows") {
binary_path.set_extension("exe");
}
binaries.push(BinaryItem {
name: name.to_string(),
path: binary_path,
});
}
}
}
break;
}
}
Ok((target_dir, workspace_root, binaries))
}
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