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@@ -10,6 +10,12 @@ use std::{
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/// How many parent folders are searched for a `Cargo.toml`
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const MAX_ANCESTORS: u32 = 10;
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+/// Some fields parsed from `cargo metadata` command
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+pub struct Metadata {
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+ pub workspace_root: PathBuf,
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+ pub target_directory: PathBuf,
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+}
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+
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/// Returns the root of the crate that the command is run from
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///
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/// If the command is run from the workspace root, this will return the top-level Cargo.toml
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@@ -31,37 +37,6 @@ pub fn crate_root() -> Result<PathBuf> {
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.ok_or_else(|| Error::CargoError("Failed to find the cargo directory".to_string()))
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}
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-/// Returns the root of a workspace
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-/// TODO @Jon, find a different way that doesn't rely on the cargo metadata command (it's slow)
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-pub fn workspace_root() -> Result<PathBuf> {
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- let output = Command::new("cargo")
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- .args(&["metadata"])
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- .output()
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- .map_err(|_| Error::CargoError("Manifset".to_string()))?;
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-
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- if !output.status.success() {
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- let mut msg = str::from_utf8(&output.stderr).unwrap().trim();
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- if msg.starts_with("error: ") {
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- msg = &msg[7..];
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- }
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-
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- return Err(Error::CargoError(msg.to_string()));
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- }
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-
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- let stdout = str::from_utf8(&output.stdout).unwrap();
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- if let Some(line) = stdout.lines().next() {
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- let meta: serde_json::Value = serde_json::from_str(line)
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- .map_err(|_| Error::CargoError("InvalidOutput".to_string()))?;
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-
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- let root = meta["workspace_root"]
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- .as_str()
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- .ok_or_else(|| Error::CargoError("InvalidOutput".to_string()))?;
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- return Ok(root.into());
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- }
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-
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- Err(Error::CargoError("InvalidOutput".to_string()))
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-}
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-
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/// Checks if the directory contains `Cargo.toml`
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fn contains_manifest(path: &Path) -> bool {
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fs::read_dir(path)
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@@ -72,3 +47,46 @@ fn contains_manifest(path: &Path) -> bool {
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})
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.unwrap_or(false)
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}
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+
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+impl Metadata {
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+ /// Returns the struct filled from `cargo metadata` output
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+ /// TODO @Jon, find a different way that doesn't rely on the cargo metadata command (it's slow)
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+ pub fn get() -> Result<Self> {
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+ let output = Command::new("cargo")
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+ .args(&["metadata"])
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+ .output()
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+ .map_err(|_| Error::CargoError("Manifset".to_string()))?;
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+
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+ if !output.status.success() {
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+ let mut msg = str::from_utf8(&output.stderr).unwrap().trim();
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+ if msg.starts_with("error: ") {
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+ msg = &msg[7..];
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+ }
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+
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+ return Err(Error::CargoError(msg.to_string()));
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+ }
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+
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+ let stdout = str::from_utf8(&output.stdout).unwrap();
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+ if let Some(line) = stdout.lines().next() {
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+ let meta: serde_json::Value = serde_json::from_str(line)
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+ .map_err(|_| Error::CargoError("InvalidOutput".to_string()))?;
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+
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+ let workspace_root = meta["workspace_root"]
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+ .as_str()
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+ .ok_or_else(|| Error::CargoError("InvalidOutput".to_string()))?
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+ .into();
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+
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+ let target_directory = meta["target_directory"]
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+ .as_str()
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+ .ok_or_else(|| Error::CargoError("InvalidOutput".to_string()))?
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+ .into();
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+
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+ return Ok(Self {
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+ workspace_root,
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+ target_directory,
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+ });
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+ }
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+
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+ Err(Error::CargoError("InvalidOutput".to_string()))
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+ }
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+}
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YuKun Liu