feat: v0.1.12

src/main.rs

@@ -8,19 +8,26 @@ use std::time::SystemTime;
 
 use rust_util::util_cmd;
 
+const SCRIPT_TEMPLATE: &'static str = include_str!("script.template");
+
 fn main() {
     let user_home = get_user_home();
     let rust_script = get_run_script_bin_name(&user_home);
 
     let args = env::args().skip(1).collect::<Vec<_>>();
     if args.is_empty() {
-        failure_and_exit!("runrs v{}, need arguments, e.g.\n\nrunrs <script.rs> [arguments]\n", env!("CARGO_PKG_VERSION"));
+        failure_and_exit!("runrs v{}, need arguments, `runrs --help` for help", env!("CARGO_PKG_VERSION"));
     }
     let first_argument = args.get(0).unwrap_or_else(|| failure_and_exit!("Must assign a script file name"));
-    if first_argument == "--help" {
+    if first_argument == "--help" || first_argument == "-h" {
         print_help();
         return;
     }
+    if first_argument == "--template" || first_argument == "-t" {
+        println!("{}", SCRIPT_TEMPLATE);
+        return;
+    }
+
     let script_file = first_argument;
 
     let (_, script_sha256) = read_file_and_digest(script_file);
@@ -89,10 +96,23 @@ fn print_help() {
     println!(r##"{} v{} - {}
 
 Help:
-runrs --help
+runrs -h|--help
+
+Show template:
+runrs -t|--template
 
 Run Rust Script:
 runrs <script.rs> [arguments]
+
+Environment variables:
+| Variable             | Description                                                  |
+| -------------------- | ------------------------------------------------------------ |
+| HOME                 | User home, default by OS system                              |
+| RUNRS_SKIP_CACHE     | Skip compiled cached file, bool , turn on true, yes, on or 1 |
+| RUNRS_REBUILD        | Force rebuild, bool                                          |
+| RUNRS_SILENT_BUILD   | Build new binary in silent mode, bool                        |
+| RUNRS_RUST_SCRIPT    | rust_script command line bin file                            |
+| RUNRS_MAX_SCRIPT_LEN | Max script length, default 1MB                               |
 "##,
              env!("CARGO_PKG_NAME"),
              env!("CARGO_PKG_VERSION"),