From 68b01d794dcf145fb11603a238c647b7ca998f84 Mon Sep 17 00:00:00 2001
From: Jose Colon Rodriguez
Date: Fri, 1 Mar 2024 20:49:49 -0400
Subject: Added canonical caseless match to Caser

---
 src/Normalizer.zig | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'src/Normalizer.zig')

diff --git a/src/Normalizer.zig b/src/Normalizer.zig
index 3ff157c..b5a54d1 100644
--- a/src/Normalizer.zig
+++ b/src/Normalizer.zig
@@ -343,6 +343,31 @@ test "nfkd !ASCII / alloc" {
     try testing.expectEqualStrings("He\u{301}llo World! \u{3a5}\u{301}", result.slice);
 }
 
+pub fn nfdCodePoints(
+    self: Self,
+    allocator: mem.Allocator,
+    cps: []const u21,
+) ![]u21 {
+    var dcp_list = std.ArrayList(u21).init(allocator);
+    defer dcp_list.deinit();
+
+    var dc_buf: [18]u21 = undefined;
+
+    for (cps) |cp| {
+        const dc = self.decompose(cp, .nfd, &dc_buf);
+
+        if (dc.form == .same) {
+            try dcp_list.append(cp);
+        } else {
+            try dcp_list.appendSlice(dc.cps);
+        }
+    }
+
+    self.canonicalSort(dcp_list.items);
+
+    return try dcp_list.toOwnedSlice();
+}
+
 pub fn nfkdCodePoints(
     self: Self,
     allocator: mem.Allocator,
-- 
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