windows moment

tests/build_runner_check.zig

@@ -18,23 +18,20 @@ pub fn main() !u8 {
         std.debug.panic("could no open/read file '{s}': {}", .{ args[2], err });
     defer gpa.free(actual_unsanitized);
 
-    // The build runner will produce absolute paths in the output so we remove them here.
-    // We also convert windows style '\' path seperators to posix style '/'.
     const actual = blk: {
-        const sep = switch (std.fs.path.sep) {
-            std.fs.path.sep_posix => "/",
-            std.fs.path.sep_windows => "\\\\",
-            else => unreachable,
-        };
+        var base_dir_buffer: std.ArrayListUnmanaged(u8) = .{};
+        defer base_dir_buffer.deinit(gpa);
 
-        const base_dir = try std.fmt.allocPrint(gpa, "{s}{s}", .{ args[3], sep });
-        defer gpa.free(base_dir);
+        try std.json.encodeJsonStringChars(args[3], .{}, base_dir_buffer.writer(gpa));
+        try std.json.encodeJsonStringChars(&.{std.fs.path.sep}, .{}, base_dir_buffer.writer(gpa));
 
-        const actual = try std.mem.replaceOwned(u8, gpa, actual_unsanitized, base_dir, "");
+        // The build runner will produce absolute paths in the output so we remove them here.
+        const actual = try std.mem.replaceOwned(u8, gpa, actual_unsanitized, base_dir_buffer.items, "");
 
+        // We also convert windows style '\\' path separators to posix style '/'.
         switch (std.fs.path.sep) {
-            std.fs.path.sep_posix => break :blk actual,
-            std.fs.path.sep_windows => {
+            '/' => break :blk actual,
+            '\\' => {
                 defer gpa.free(actual);
                 break :blk try std.mem.replaceOwned(u8, gpa, actual, "\\\\", "/");
             },