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, 13 insertions, 0 deletions

diff --git a/src/compose/environment.rs b/src/compose/environment.rs
new file mode 100644
index 0000000..219a597
--- /dev/null
+++ b/src/compose/environment.rs
@@ -0,0 +1,13 @@
+pub struct Environment {
+    pub aliases: Vec<String>,
+    pub bins: Vec<String>,
+}
+
+impl Environment {
+    pub fn new() -> Self {
+        Environment {
+            aliases: vec![],
+            bins: vec![],
+        }
+    }
+}