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, 46 insertions, 0 deletions

diff --git a/src/poem/anthology/source.rs b/src/poem/anthology/source.rs
new file mode 100644
index 0000000..1449994
--- /dev/null
+++ b/src/poem/anthology/source.rs
@@ -0,0 +1,46 @@
+use crate::poem::Verse;
+use crate::poem::{read::Readable, recite::Reciteable, Poem};
+use std::fs;
+use std::path::Path;
+
+pub fn incant(verse: &Verse, path: &Vec<&Path>, bins: &mut Vec<String>) -> i32 {
+    let files = match verse.clause() {
+        Some(clause) => clause,
+        None => {
+            eprintln!("source: not enough arguments");
+            return 1;
+        }
+    };
+
+    for file in files {
+        let poetry = match fs::read_to_string(&file) {
+            Ok(contents) => contents,
+            Err(e) => {
+                eprintln!(
+                    "source: could not load {}: {}",
+                    file,
+                    e.to_string().to_lowercase()
+                );
+                return 127;
+            }
+        };
+
+        let poem = match Poem::read(poetry) {
+            Ok(poem) => poem,
+            Err(e) => {
+                eprintln!("dwvsh: {}", e.to_string().to_lowercase());
+                continue;
+            }
+        };
+
+        match poem.recite(path, bins, None) {
+            Ok(_) => {}
+            Err(e) => {
+                eprintln!("dwvsh: {}", e.to_string().to_lowercase());
+                continue;
+            }
+        }
+    }
+
+    0
+}