updated to gethostname::gethostname

Cargo.toml

@@ -12,3 +12,4 @@ path = "src/make_prompt.rs"
 
 [dependencies]
 git2="*"
+gethostname="*"

src/make_prompt.rs

@@ -2,6 +2,8 @@ use std::fs::File;
 use std::io::Read;
 use std::io::BufReader;
 use std::io::BufRead;
+use gethostname::gethostname;
+use std::ffi::OsString;
 
 fn fixed_width(input: &String, len: usize) -> String
 {
@@ -173,12 +175,12 @@ fn getenv(varname: &str) -> String
 {
     match std::env::var(varname)
     {
-        Ok(hostname) => hostname,
-        Err(_) => "".to_string()
+        Ok(var) => var,
+        Err(_err) => {"".to_string()}
     }
 }
 
-fn main()
+fn main() ->Result<(), OsString>
 {
     const SH_GREEN: &str = "1;32";
     const SH_RED: &str = "01;31";
@@ -246,7 +248,7 @@ fn main()
     }
     {
         print!("{}{}", shell_color_str(&"╞[", SH_GREEN)
-                    , shell_color_str(&fixed_width(&getenv("HOSTNAME"), 13), SH_CYAN));
+                    , shell_color_str(&fixed_width(&gethostname().into_string()?, 13), SH_CYAN));
         print!("{}{}", shell_color_str(&"|", SH_GREEN)
                , shell_color_str(&fixed_width(&getenv("USER"), 13), SH_RED));
         print!("{}{}", shell_color_str(&"|", SH_GREEN)
@@ -265,4 +267,5 @@ fn main()
     {
         print!("{} {} ", shell_color_str(&"└", SH_GREEN), shell_color_str(&"$", SH_PURPLE));
     }
+    Ok(())
 }