From ba5d9081b479e95ffa7f3baf751beedd370cec14 Mon Sep 17 00:00:00 2001
From: Sam Atman
Date: Wed, 4 Feb 2026 18:01:36 -0500
Subject: Normalization and case folding

Both of which deserve some further attention.
---
 codegen/fold.zig | 57 +++++++++++++++++++++++++++++++++++++-------------------
 1 file changed, 38 insertions(+), 19 deletions(-)

(limited to 'codegen/fold.zig')

diff --git a/codegen/fold.zig b/codegen/fold.zig
index 366ed79..c5f54eb 100644
--- a/codegen/fold.zig
+++ b/codegen/fold.zig
@@ -228,26 +228,45 @@ pub fn main() anyerror!void {
         var out_file = try std.fs.cwd().createFile(output_path, .{});
         defer out_file.close();
         var writer = out_file.writer(&write_buf);
-
-        const endian = builtin.cpu.arch.endian();
         // Table metadata.
-        try writer.interface.writeInt(u24, @intCast(codepoint_cutoff), endian);
-        try writer.interface.writeInt(u24, @intCast(multiple_codepoint_start), endian);
-        // Stage 1
-        try writer.interface.writeInt(u16, @intCast(meaningful_stage1.len), endian);
-        try writer.interface.writeAll(meaningful_stage1);
-        // Stage 2
-        try writer.interface.writeInt(u16, @intCast(stage2.len), endian);
-        try writer.interface.writeAll(stage2);
-        // Stage 3
-        try writer.interface.writeInt(u16, @intCast(stage3.len), endian);
-        for (stage3) |offset| try writer.interface.writeInt(i24, offset, endian);
-        // Changes when case folded
-        // Min and max
-        try writer.interface.writeInt(u24, std.mem.min(u21, changes_when_casefolded_exceptions.items), endian);
-        try writer.interface.writeInt(u24, std.mem.max(u21, changes_when_casefolded_exceptions.items), endian);
-        try writer.interface.writeInt(u16, @intCast(changes_when_casefolded_exceptions.items.len), endian);
-        for (changes_when_casefolded_exceptions.items) |cp| try writer.interface.writeInt(u24, cp, endian);
+        try writer.interface.print(
+            \\//! This file is auto-generated. Do not edit.
+            \\
+            \\pub const cutoff: u21 = {};
+            \\pub const cwcf_exceptions_min: u21 = {};
+            \\pub const cwcf_exceptions_max: u21 = {};
+            \\pub const cwcf_exceptions: [{}]u21 = .{{
+        , .{ codepoint_cutoff, std.mem.min(u21, changes_when_casefolded_exceptions.items), std.mem.max(u21, changes_when_casefolded_exceptions.items), changes_when_casefolded_exceptions.items.len });
+        for (changes_when_casefolded_exceptions.items) |cp| try writer.interface.print("{}, ", .{cp});
+
+        try writer.interface.print(
+            \\
+            \\}};
+            \\
+            \\pub const multiple_start: u21 = {};
+            \\pub const stage1: [{}]u8 = .{{
+        , .{ multiple_codepoint_start, meaningful_stage1.len });
+        for (meaningful_stage1) |entry| try writer.interface.print("{}, ", .{entry});
+
+        try writer.interface.print(
+            \\
+            \\}};
+            \\
+            \\pub const stage2: [{}]u8 = .{{
+        , .{stage2.len});
+        for (stage2) |entry| try writer.interface.print("{}, ", .{entry});
+
+        try writer.interface.print(
+            \\
+            \\}};
+            \\
+            \\pub const stage3: [{}]i24 = .{{
+        , .{stage3.len});
+        for (stage3) |entry| try writer.interface.print("{}, ", .{entry});
+
+        try writer.interface.writeAll(
+            \\};
+        );
 
         try writer.interface.flush();
     }
-- 
cgit v1.2.3