moved commands

crates/nu-command/src/env/let_env.rs

@@ -0,0 +1,51 @@
+use nu_engine::eval_expression;
+use nu_protocol::ast::Call;
+use nu_protocol::engine::{Command, EvaluationContext};
+use nu_protocol::{Signature, SyntaxShape, Value};
+
+pub struct LetEnv;
+
+impl Command for LetEnv {
+    fn name(&self) -> &str {
+        "let-env"
+    }
+
+    fn usage(&self) -> &str {
+        "Create an environment variable and give it a value."
+    }
+
+    fn signature(&self) -> nu_protocol::Signature {
+        Signature::build("let-env")
+            .required("var_name", SyntaxShape::String, "variable name")
+            .required(
+                "initial_value",
+                SyntaxShape::Keyword(b"=".to_vec(), Box::new(SyntaxShape::String)),
+                "equals sign followed by value",
+            )
+    }
+
+    fn run(
+        &self,
+        context: &EvaluationContext,
+        call: &Call,
+        _input: Value,
+    ) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
+        let env_var = call.positional[0]
+            .as_string()
+            .expect("internal error: missing variable");
+
+        let keyword_expr = call.positional[1]
+            .as_keyword()
+            .expect("internal error: missing keyword");
+
+        let rhs = eval_expression(context, keyword_expr)?;
+        let rhs = rhs.as_string()?;
+
+        //println!("Adding: {:?} to {}", rhs, var_id);
+
+        context.add_env_var(env_var, rhs);
+        Ok(Value::Nothing {
+            span: call.positional[0].span,
+        })
+    }
+}

crates/nu-command/src/env/mod.rs

@@ -0,0 +1,3 @@
+mod let_env;
+
+pub use let_env::LetEnv;