Export media_cas_packager_sdk

common/string_util.cc

@@ -0,0 +1,36 @@
+////////////////////////////////////////////////////////////////////////////////
+// Copyright 2018 Google LLC.
+//
+// This software is licensed under the terms defined in the Widevine Master
+// License Agreement. For a copy of this agreement, please contact
+// widevine-licensing@google.com.
+////////////////////////////////////////////////////////////////////////////////
+
+#include "common/string_util.h"
+
+#include <bitset>
+#include <sstream>
+#include <string>
+#include "util/status.h"
+
+namespace widevine {
+namespace string_util {
+
+util::Status BitsetStringToBinaryString(const std::string& bitset, std::string* output) {
+  if (output == nullptr) {
+    return util::Status(util::error::INTERNAL, "output is nullptr.");
+  }
+
+  std::stringstream sstream(bitset);
+  for (size_t i = 0; i < bitset.size(); i += 8) {
+    std::bitset<8> bits;
+    sstream >> bits;
+    char c = static_cast<char>(bits.to_ulong());
+    *output += c;
+  }
+
+  return util::OkStatus();
+}
+
+}  // namespace string_util
+}  // namespace widevine