Fix #75, implement UnicodeNormalization for char

Xaeroxe · Xaeroxe · commit 8be3d9668649 · 2021-10-07T14:46:14.000-06:00
diff --git a/src/lib.rs b/src/lib.rs
@@ -62,7 +62,10 @@ pub use crate::recompose::Recompositions;
 pub use crate::replace::Replacements;
 pub use crate::stream_safe::StreamSafe;
 pub use crate::tables::UNICODE_VERSION;
-use core::str::Chars;
+use core::{
+    str::Chars,
+    option,
+};
 
 mod no_std_prelude;
 
@@ -166,6 +169,39 @@ impl<'a> UnicodeNormalization<Chars<'a>> for &'a str {
     }
 }
 
+
+impl UnicodeNormalization<option::IntoIter<char>> for char {
+    #[inline]
+    fn nfd(self) -> Decompositions<option::IntoIter<char>> {
+        decompose::new_canonical(Some(self).into_iter())
+    }
+
+    #[inline]
+    fn nfkd(self) -> Decompositions<option::IntoIter<char>> {
+        decompose::new_compatible(Some(self).into_iter())
+    }
+
+    #[inline]
+    fn nfc(self) -> Recompositions<option::IntoIter<char>> {
+        recompose::new_canonical(Some(self).into_iter())
+    }
+
+    #[inline]
+    fn nfkc(self) -> Recompositions<option::IntoIter<char>> {
+        recompose::new_compatible(Some(self).into_iter())
+    }
+
+    #[inline]
+    fn cjk_compat_variants(self) -> Replacements<option::IntoIter<char>> {
+        replace::new_cjk_compat_variants(Some(self).into_iter())
+    }
+
+    #[inline]
+    fn stream_safe(self) -> StreamSafe<option::IntoIter<char>> {
+        StreamSafe::new(Some(self).into_iter())
+    }
+}
+
 impl<I: Iterator<Item = char>> UnicodeNormalization<I> for I {
     #[inline]
     fn nfd(self) -> Decompositions<I> {
diff --git a/src/test.rs b/src/test.rs
@@ -105,6 +105,11 @@ fn test_nfkc() {
     );
 }
 
+#[test]
+fn test_normalize_char() {
+    assert_eq!('\u{2126}'.nfd().to_string(), "\u{3a9}")
+}
+
 #[test]
 fn test_is_combining_mark_ascii() {
     for cp in 0..0x7f {
