Add wrapper for global shell environment

Instead of having to pass around a bunch of different data structures
for various shell functions, create the wrapper compose::Environment,
which serves as a global shell state. It is configured via
login/profile/rc scripts initially, but can of course be modified
throughout the lifetime of the shell.

1 files changed, 6 insertions, 5 deletions

diff --git a/src/main.rs b/src/main.rs
index ce5f611..898d19e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,6 +4,7 @@ mod path;
 mod poem;
 use poem::{read::Readable, recite::Reciteable, Poem};
 mod compose;
+use compose::Environment;
 
 /// Starts the main shell loop
 ///
@@ -20,9 +21,9 @@ mod compose;
 ///     repl(prompt, &mut at_prompt);
 /// }
 /// ```
-fn repl(prompt: &str, at_prompt: &mut Arc<Mutex<bool>>) {
+fn repl(prompt: &str, at_prompt: &mut Arc<Mutex<bool>>, env: &mut Environment) {
     // Initial path refresh on startup
-    let mut bins: Vec<String> = path::refresh();
+    env.bins = path::refresh();
 
     // Main shell loop
     loop {
@@ -67,7 +68,7 @@ fn repl(prompt: &str, at_prompt: &mut Arc<Mutex<bool>>) {
         };
 
         // Recite the poem
-        match poem.recite(&mut bins, None) {
+        match poem.recite(env, None) {
             Ok(_) => {}
             Err(e) => eprintln!("dwvsh: {}", e.to_string().to_lowercase()),
         }
@@ -81,7 +82,7 @@ fn main() {
     // Compose the environment for dwvsh
     // TODO: All instances of `env!("HOME")` need to be changed to use env::var
     // TODO: Will probably need to set $HOME in dwv{profile,login} via passwd
-    compose::env();
+    let mut env = compose::env();
 
     // Set the prompt
     let prompt = "|> ";
@@ -102,5 +103,5 @@ fn main() {
     };
 
     // Begin evaluating commands
-    repl(prompt, &mut at_prompt);
+    repl(prompt, &mut at_prompt, &mut env);
 }