Add OSDK command line interface

osdk/src/utils.rs

@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: MPL-2.0
+
+use std::ffi::OsStr;
+use std::path::Path;
+use std::process::Command;
+
+use crate::error::Errno;
+use crate::error_msg;
+
+// FIXME: Crates belonging to Asterinas require a different dependency format. The dependency 
+// should be specified using a relative path instead of a URL.
+pub const ASTER_FRAME_DEP: &str =
+    "aster-frame = { git = \"https://github.com/asterinas/asterinas\", rev = \"f2f991b\" }";
+
+fn cargo() -> Command {
+    Command::new("cargo")
+}
+
+/// Create a new library crate with cargo
+pub fn cargo_new_lib(crate_name: &str) {
+    let mut command = cargo();
+    command.args(["new", "--lib", crate_name]);
+    let status = command.status().unwrap();
+    if !status.success() {
+        error_msg!("Failed to create new crate");
+        std::process::exit(Errno::CreateCrate as _);
+    }
+}
+
+pub fn get_cargo_metadata<S1: AsRef<Path>, S2: AsRef<OsStr>>(
+    current_dir: Option<S1>,
+    cargo_args: Option<&[S2]>,
+) -> serde_json::Value {
+    let mut command = cargo();
+    command.args(["metadata", "--no-deps", "--format-version", "1"]);
+
+    if let Some(current_dir) = current_dir {
+        command.current_dir(current_dir);
+    }
+
+    if let Some(cargo_args) = cargo_args {
+        command.args(cargo_args);
+    }
+
+    let output = command.output().unwrap();
+
+    if !output.status.success() {
+        let stderr = String::from_utf8_lossy(&output.stderr);
+        eprintln!("{}", &stderr);
+
+        error_msg!("Failed to get metadata for newly created crate");
+        std::process::exit(Errno::GetMetadata as _);
+    }
+
+    let stdout = String::from_utf8_lossy(&output.stdout);
+    serde_json::from_str(&stdout).unwrap()
+}