Add macro evaluator with %include implementation

2024-06-03 10:41:11 -07:00
parent 4730f11f31
commit 0ac9ee4a3f
5 changed files with 189 additions and 2 deletions
@@ -0,0 +1,70 @@
+use anyhow::{anyhow, Result};
+use codepage_437::CP437_WINGDINGS;
+
+// Serialize multi-line content with CR-terminated lines
+fn encode_multiline(input: &str) -> Result<Vec<u8>> {
+    input
+        .chars()
+        .map(|c| {
+            if c == '\n' {
+                Ok('\r' as u8)
+            } else {
+                CP437_WINGDINGS
+                    .encode(c)
+                    .ok_or(anyhow!("Couldn't encode char: {}", c))
+            }
+        })
+        .collect()
+}
+
+fn decode_multiline(input: &[u8]) -> String {
+    input
+        .iter()
+        .map(|&x| {
+            if x == '\r' as u8 {
+                '\n'
+            } else {
+                CP437_WINGDINGS.decode(x)
+            }
+        })
+        .collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use insta::assert_debug_snapshot;
+
+    use crate::encoding::{decode_multiline, encode_multiline};
+
+    fn serialize_code(input: &str) -> Vec<u8> {
+        encode_multiline(input).expect("Error in test")
+    }
+
+    #[test]
+    fn roundtrip_multiline() {
+        let bytes: Vec<u8> = (0..=255).collect();
+        assert_eq!(bytes, serialize_code(&decode_multiline(&bytes)))
+    }
+
+    #[test]
+    fn newlines() {
+        assert_debug_snapshot!(serialize_code("ABC\nDEF"), @r###"
+        [
+            65,
+            66,
+            67,
+            13,
+            68,
+            69,
+            70,
+        ]
+        "###)
+    }
+
+    #[test]
+    fn wingdings() {
+        assert_debug_snapshot!(decode_multiline(&(0..32).collect::<Vec<_>>()), @r###""\0☺☻♥♦♣♠•◘○◙♂♀\n♫☼►◄↕‼¶§▬↨↑↓→←∟↔▲▼""###);
+        assert_debug_snapshot!(decode_multiline(&(112..144).collect::<Vec<_>>()), @r###""pqrstuvwxyz{|}~⌂ÇüéâäàåçêëèïîìÄÅ""###);
+        assert_debug_snapshot!(decode_multiline(&(224..=255).collect::<Vec<_>>()), @r###""αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■\u{a0}""###);
+    }
+}