The anthology module

The anthology module was added to run built-in commands. The 'cd' and
'exit' built-ins were moved from the main recite() loop to this module.
Additionally, the 'export' and 'source' built-ins were added.

1 files changed, 23 insertions, 0 deletions

diff --git a/src/poem/anthology/export.rs b/src/poem/anthology/export.rs
new file mode 100644
index 0000000..76dfd99
--- /dev/null
+++ b/src/poem/anthology/export.rs
@@ -0,0 +1,23 @@
+use crate::poem::Verse;
+use std::env;
+
+pub fn incant(verse: &Verse) -> i32 {
+    match verse.clause() {
+        Some(clause) => {
+            for stanza in clause {
+                let (key, val) = match stanza.split_once("=") {
+                    Some((key, val)) => (key, val),
+                    None => continue,
+                };
+                env::set_var(key, val);
+            }
+        }
+        None => {
+            for (key, val) in env::vars() {
+                println!("{}={}", key, val);
+            }
+        }
+    }
+
+    0
+}