feat: Add info cargo subcommand

Author: Rustin170506

src/bin/cargo/commands/info.rs

@@ -0,0 +1,38 @@
+use cargo::ops::cargo_info::info;
+use cargo::util::command_prelude::*;
+use cargo_util_schemas::core::PackageIdSpec;
+
+pub fn cli() -> Command {
+    Command::new("info")
+        .about("Display information about a package in the registry")
+        .arg(
+            Arg::new("package")
+                .required(true)
+                .value_name("SPEC")
+                .help_heading(heading::PACKAGE_SELECTION)
+                .help("Package to inspect"),
+        )
+        .arg_index("Registry index URL to search packages in")
+        .arg_registry("Registry to search packages in")
+        .after_help(color_print::cstr!(
+            "Run `<cyan,bold>cargo help info</>` for more detailed information.\n"
+        ))
+}
+
+pub fn exec(gctx: &mut GlobalContext, args: &ArgMatches) -> CliResult {
+    let package = args
+        .get_one::<String>("package")
+        .map(String::as_str)
+        .unwrap();
+    let spec = PackageIdSpec::parse(package).map_err(|e| {
+        anyhow::format_err!(
+            "invalid package id specification `{}`: {}",
+            package,
+            e.to_string()
+        )
+    })?;
+
+    let reg_or_index = args.registry_or_index(gctx)?;
+    info(&spec, gctx, reg_or_index)?;
+    Ok(())
+}

src/bin/cargo/commands/mod.rs

@@ -14,6 +14,7 @@ pub fn builtin() -> Vec<Command> {
         generate_lockfile::cli(),
         git_checkout::cli(),
         help::cli(),
+        info::cli(),
         init::cli(),
         install::cli(),
         locate_project::cli(),
@@ -59,6 +60,7 @@ pub fn builtin_exec(cmd: &str) -> Option<Exec> {
         "generate-lockfile" => generate_lockfile::exec,
         "git-checkout" => git_checkout::exec,
         "help" => help::exec,
+        "info" => info::exec,
         "init" => init::exec,
         "install" => install::exec,
         "locate-project" => locate_project::exec,
@@ -102,6 +104,7 @@ pub mod fix;
 pub mod generate_lockfile;
 pub mod git_checkout;
 pub mod help;
+pub mod info;
 pub mod init;
 pub mod install;
 pub mod locate_project;