1 files changed, 50 insertions, 0 deletions
diff --git a/courgette/courgette_minimal_tool.cc b/courgette/courgette_minimal_tool.cc
new file mode 100644
index 0000000..84de068
--- /dev/null
+++ b/courgette/courgette_minimal_tool.cc
@@ -0,0 +1,50 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// 'courgette_minimal_tool' is not meant to be a serious command-line tool.  It
+// has the minimum logic to apply a Courgette patch to a file.  The main purpose
+// is to monitor the code size of the patcher.
+
+#include <string>
+
+#include "base/file_util.h"
+
+#include "courgette/third_party/bsdiff.h"
+#include "courgette/courgette.h"
+#include "courgette/streams.h"
+
+void PrintHelp() {
+  fprintf(stderr,
+    "Usage:\n"
+    "  courgette_minimal_tool <old-file-input> <patch-file-input>"
+    " <new-file-output>\n"
+    "\n");
+}
+
+void UsageProblem(const char* message) {
+  fprintf(stderr, "%s\n", message);
+  PrintHelp();
+  exit(1);
+}
+
+void Problem(const char* message) {
+  fprintf(stderr, "%s\n", message);
+  exit(1);
+}
+
+int wmain(int argc, const wchar_t* argv[]) {
+  if (argc != 4)
+    UsageProblem("bad args");
+
+  courgette::Status status =
+      courgette::ApplyEnsemblePatch(argv[1], argv[2], argv[3]);
+
+  if (status != courgette::C_OK) {
+    if (status == courgette::C_READ_OPEN_ERROR) Problem("Can't open file.");
+    if (status == courgette::C_WRITE_OPEN_ERROR) Problem("Can't open file.");
+    if (status == courgette::C_READ_ERROR) Problem("Can't read from file.");
+    if (status == courgette::C_WRITE_ERROR) Problem("Can't write to file.");
+    Problem("patch failed.");
+  }
+}