feat(new): Ensure that file names are ASCII only

This allows us to just query the last chapter instead of storing it.

1 files changed, 35 insertions, 0 deletions

diff --git a/src/new/mod.rs b/src/new/mod.rs
index a85187c..8d8193c 100644
--- a/src/new/mod.rs
+++ b/src/new/mod.rs
@@ -1,2 +1,37 @@
+use std::fmt::Display;
+
+use convert_case::{Case, Casing};
+use deunicode::deunicode;
+
 pub mod chapter;
 pub mod section;
+
+#[derive(PartialEq, Eq, PartialOrd, Ord)]
+pub struct MangledName(String);
+
+impl MangledName {
+    pub fn new(name: &str) -> Self {
+        let ascii_name = deunicode(&name);
+        Self(ascii_name.to_case(Case::Snake))
+    }
+
+    pub fn from_str_unsafe(name: &str) -> Self {
+        Self(name.to_owned())
+    }
+
+    pub fn check_mangled(name: &str) -> bool {
+        let mangled = Self::new(name);
+        let normal = Self::from_str_unsafe(name);
+
+        mangled == normal
+    }
+
+    pub fn as_str(&self) -> &str {
+        &self.0
+    }
+}
+impl Display for MangledName {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_str(&self.0)
+    }
+}