Add SourireCrypt

Use case-insensitive method to compare game title

src/utils/case_insensitive_string.rs

@@ -0,0 +1,76 @@
+use serde::Deserialize;
+use std::borrow::Borrow;
+use std::cmp::Ordering;
+use std::ops::{Deref, DerefMut};
+
+#[derive(Debug, Deserialize)]
+#[serde(transparent)]
+/// A case-insensitive string wrapper. Can be used as a key in BTreeMap with a case-insensitive ordering.
+///
+/// WARN: Borrowing a &str/&String from this struct will not be case-insensitive. So getting a value from a BTreeMap with a &str/&String key is not ignore case. It just use it's original case.
+pub struct CaseInsensitiveString(String);
+
+impl PartialEq for CaseInsensitiveString {
+    fn eq(&self, other: &Self) -> bool {
+        self.0.eq_ignore_ascii_case(&other.0)
+    }
+}
+
+impl PartialEq<String> for CaseInsensitiveString {
+    fn eq(&self, other: &String) -> bool {
+        self.0.eq_ignore_ascii_case(other)
+    }
+}
+
+impl PartialEq<&str> for CaseInsensitiveString {
+    fn eq(&self, other: &&str) -> bool {
+        self.0.eq_ignore_ascii_case(other)
+    }
+}
+
+impl Eq for CaseInsensitiveString {}
+
+impl PartialOrd for CaseInsensitiveString {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl Ord for CaseInsensitiveString {
+    fn cmp(&self, other: &Self) -> Ordering {
+        self.0
+            .to_ascii_lowercase()
+            .cmp(&other.0.to_ascii_lowercase())
+    }
+}
+
+impl Deref for CaseInsensitiveString {
+    type Target = String;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for CaseInsensitiveString {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl Borrow<str> for CaseInsensitiveString {
+    fn borrow(&self) -> &str {
+        &self.0
+    }
+}
+
+impl Borrow<String> for CaseInsensitiveString {
+    fn borrow(&self) -> &String {
+        &self.0
+    }
+}
+
+impl std::fmt::Display for CaseInsensitiveString {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.0.fmt(f)
+    }
+}

src/utils/mod.rs

@@ -3,6 +3,8 @@
 pub mod bit_stream;
 #[cfg(feature = "utils-blowfish")]
 pub mod blowfish;
+#[cfg(feature = "utils-case-insensitive-string")]
+pub mod case_insensitive_string;
 pub mod counter;
 #[cfg(feature = "utils-crc32")]
 pub mod crc32;