diff --git a/util/embed_test_data.go b/util/embed_test_data.go
new file mode 100644
index 0000000..0819530
--- /dev/null
+++ b/util/embed_test_data.go
@@ -0,0 +1,140 @@
+// Copyright (c) 2017, Google Inc.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+// embed_test_data generates a C++ source file which exports a function,
+// GetTestData, which looks up the specified data files.
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"unicode"
+)
+
+func quote(in []byte) string {
+	var buf bytes.Buffer
+	buf.WriteByte('"')
+	for _, b := range in {
+		switch b {
+		case '\a':
+			buf.WriteString(`\a`)
+		case '\b':
+			buf.WriteString(`\b`)
+		case '\f':
+			buf.WriteString(`\f`)
+		case '\n':
+			buf.WriteString(`\n`)
+		case '\r':
+			buf.WriteString(`\r`)
+		case '\t':
+			buf.WriteString(`\t`)
+		case '\v':
+			buf.WriteString(`\v`)
+		case '"':
+			buf.WriteString(`\"`)
+		default:
+			if unicode.IsPrint(rune(b)) {
+				buf.WriteByte(b)
+			} else {
+				fmt.Fprintf(&buf, "\\x%02x", b)
+			}
+		}
+	}
+	buf.WriteByte('"')
+	return buf.String()
+}
+
+func main() {
+	fmt.Printf(`/* Copyright (c) 2017, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+/* This file is generated by:
+`)
+	fmt.Printf(" *   go run util/embed_test_data.go")
+	for _, arg := range os.Args[1:] {
+		fmt.Printf(" \\\n *       %s", arg)
+	}
+	fmt.Printf(" */\n")
+
+	fmt.Printf(`
+#include <stdlib.h>
+#include <string.h>
+
+#include <algorithm>
+#include <string>
+
+
+`)
+
+	// MSVC limits the length of string constants, so we emit an array of
+	// them and concatenate at runtime. We could also use a single array
+	// literal, but this is less compact.
+	const chunkSize = 8192
+
+	for i, arg := range os.Args[1:] {
+		data, err := ioutil.ReadFile(arg)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Error reading %s: %s.\n", data, err)
+			os.Exit(1)
+		}
+		fmt.Printf("static const char *kData%d[] = {\n", i)
+		for i := 0; i < len(data); i += chunkSize {
+			chunk := chunkSize
+			if chunk > len(data)-i {
+				chunk = len(data) - i
+			}
+			fmt.Printf("    %s,\n", quote(data[i:i+chunk]))
+		}
+		fmt.Printf("};\n")
+		fmt.Printf("static const size_t kLen%d = %d;\n\n", i, len(data))
+	}
+
+	fmt.Printf(`static std::string AssembleString(const char **data, size_t len) {
+  std::string ret;
+  for (size_t i = 0; i < len; i += %d) {
+    size_t chunk = std::min(static_cast<size_t>(%d), len - i);
+    ret.append(data[i / %d], chunk);
+  }
+  return ret;
+}
+
+/* Silence -Wmissing-declarations. */
+std::string GetTestData(const char *path);
+
+std::string GetTestData(const char *path) {
+`, chunkSize, chunkSize, chunkSize)
+	for i, arg := range os.Args[1:] {
+		fmt.Printf("  if (strcmp(path, %s) == 0) {\n", quote([]byte(arg)))
+		fmt.Printf("    return AssembleString(kData%d, kLen%d);\n", i, i)
+		fmt.Printf("  }\n")
+	}
+	fmt.Printf(`  fprintf(stderr, "File not embedded: %%s.\n", path);
+  abort();
+}
+`)
+
+}