Ensure selfupdate is enabled for SDKMAN! (#954)

* Ensure `selfupdate` is enabled for SDKMAN!

This subcommand is unavailable when the `sdkman_selfupdate_feature`
option is disabled, as is the case when SDKMAN! is installed via
Homebrew.

sdkman/sdkman-cli#1042

* Fix macOS build; simplify

Co-authored-by: Roey Darwish Dror <[email protected]>

Author: qcloutier

Cargo.toml

@@ -41,16 +41,14 @@ notify-rust = "4.5.0"
 
 [target.'cfg(unix)'.dependencies]
 nix = "0.24.1"
+rust-ini = "0.18.0"
 self_update_crate = { version = "0.30.0", default-features = false, optional = true, package = "self_update", features = ["archive-tar", "compression-flate2", "rustls"] }
 
 [target.'cfg(windows)'.dependencies]
 self_update_crate = { version = "0.30.0", default-features = false, optional = true, package = "self_update", features = ["archive-zip", "compression-zip-deflate", "rustls"] }
 winapi = "0.3.9"
 parselnk = "0.1.0"
 
-[target.'cfg(target_os = "linux")'.dependencies]
-rust-ini = "0.18.0"
-
 [profile.release]
 lto = true
 

src/steps/os/unix.rs

@@ -8,6 +8,7 @@ use crate::utils::{require, PathExt};
 use crate::Step;
 use anyhow::Result;
 use directories::BaseDirs;
+use ini::Ini;
 use log::debug;
 use std::fs;
 use std::os::unix::fs::MetadataExt;
@@ -343,11 +344,26 @@ pub fn run_sdkman(base_dirs: &BaseDirs, cleanup: bool, run_type: RunType) -> Res
 
     print_separator("SDKMAN!");
 
-    let cmd_selfupdate = format!("source {} && sdk selfupdate", &sdkman_init_path);
-    run_type
-        .execute(&bash)
-        .args(&["-c", cmd_selfupdate.as_str()])
-        .check_run()?;
+    let sdkman_config_path = env::var("SDKMAN_DIR")
+        .map(PathBuf::from)
+        .unwrap_or_else(|_| base_dirs.home_dir().join(".sdkman"))
+        .join("etc")
+        .join("config")
+        .require()?;
+
+    let sdkman_config = Ini::load_from_file(sdkman_config_path)?;
+    let selfupdate_enabled = sdkman_config
+        .general_section()
+        .get("sdkman_selfupdate_feature")
+        .unwrap_or("false");
+
+    if selfupdate_enabled == "true" {
+        let cmd_selfupdate = format!("source {} && sdk selfupdate", &sdkman_init_path);
+        run_type
+            .execute(&bash)
+            .args(&["-c", cmd_selfupdate.as_str()])
+            .check_run()?;
+    }
 
     let cmd_update = format!("source {} && sdk update", &sdkman_init_path);
     run_type.execute(&bash).args(&["-c", cmd_update.as_str()]).check_run()?;