Nomad changes

docs/snippets/zig/plugins/plugin_validator.md

@@ -0,0 +1,46 @@
+```zig title="Zig"
+const std = @import("std");
+const kreuzberg = @import("kreuzberg");
+
+const ContentValidator = struct {
+    pub fn validate(self: *ContentValidator, result: [*c]const u8, config: [*c]const u8) !void {
+        _ = self;
+        _ = config;
+        const slice = std.mem.sliceTo(result, 0);
+        if (slice.len == 0) return error.Validation;
+    }
+
+    pub fn should_validate(self: *ContentValidator, result: [*c]const u8, config: [*c]const u8) i32 {
+        _ = self;
+        _ = result;
+        _ = config;
+        return 1;
+    }
+
+    pub fn priority(self: *ContentValidator) i32 {
+        _ = self;
+        return 50;
+    }
+};
+
+pub fn main() !void {
+    var instance = ContentValidator{};
+    var vtable = kreuzberg.make_validator_vtable(ContentValidator, &instance);
+
+    vtable.name_fn = struct {
+        fn thunk(user_data: ?*anyopaque, out_name: ?*?[*c]u8) callconv(.C) void {
+            _ = user_data;
+            if (out_name) |ptr| ptr.* = @constCast("content-validator");
+        }
+    }.thunk;
+    vtable.version_fn = struct {
+        fn thunk(user_data: ?*anyopaque, out_version: ?*?[*c]u8) callconv(.C) void {
+            _ = user_data;
+            if (out_version) |ptr| ptr.* = @constCast("1.0.0");
+        }
+    }.thunk;
+
+    var out_error: ?[*c]u8 = null;
+    _ = kreuzberg.register_validator("content-validator", vtable, &instance, &out_error);
+}
+```