1 files changed, 51 insertions, 0 deletions
diff --git a/js/src/util/CompleteFile.h b/js/src/util/CompleteFile.h
new file mode 100644
index 0000000000..b13fe30b28
--- /dev/null
+++ b/js/src/util/CompleteFile.h
@@ -0,0 +1,51 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef util_CompleteFile_h
+#define util_CompleteFile_h
+
+#include "mozilla/Assertions.h"  // MOZ_ASSERT
+
+#include <stdint.h>  // uint8_t
+#include <stdio.h>   // fclose, FILE, stdin
+
+#include "jstypes.h"         // JS_PUBLIC_API
+#include "js/AllocPolicy.h"  // js::TempAllocPolicy
+#include "js/Vector.h"       // js::Vector
+
+struct JS_PUBLIC_API JSContext;
+
+namespace js {
+
+using FileContents = Vector<uint8_t, 8, TempAllocPolicy>;
+
+extern bool ReadCompleteFile(JSContext* cx, FILE* fp, FileContents& buffer);
+
+class AutoFile {
+  FILE* fp_ = nullptr;
+
+ public:
+  AutoFile() = default;
+
+  ~AutoFile() {
+    if (fp_ && fp_ != stdin) {
+      fclose(fp_);
+    }
+  }
+
+  FILE* fp() const { return fp_; }
+
+  bool open(JSContext* cx, const char* filename);
+
+  bool readAll(JSContext* cx, FileContents& buffer) {
+    MOZ_ASSERT(fp_);
+    return ReadCompleteFile(cx, fp_, buffer);
+  }
+};
+
+}  // namespace js
+
+#endif /* util_CompleteFile_h */