1 files changed, 56 insertions, 0 deletions
diff --git a/third_party/libwebrtc/rtc_base/strings/str_join.h b/third_party/libwebrtc/rtc_base/strings/str_join.h
new file mode 100644
index 0000000000..762e63ae2a
--- /dev/null
+++ b/third_party/libwebrtc/rtc_base/strings/str_join.h
@@ -0,0 +1,56 @@
+/*
+ *  Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+#ifndef RTC_BASE_STRINGS_STR_JOIN_H_
+#define RTC_BASE_STRINGS_STR_JOIN_H_
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "rtc_base/strings/string_builder.h"
+
+namespace webrtc {
+
+template <typename Range>
+std::string StrJoin(const Range& seq, absl::string_view delimiter) {
+  rtc::StringBuilder sb;
+  int idx = 0;
+
+  for (const typename Range::value_type& elem : seq) {
+    if (idx > 0) {
+      sb << delimiter;
+    }
+    sb << elem;
+
+    ++idx;
+  }
+  return sb.Release();
+}
+
+template <typename Range, typename Functor>
+std::string StrJoin(const Range& seq,
+                    absl::string_view delimiter,
+                    const Functor& fn) {
+  rtc::StringBuilder sb;
+  int idx = 0;
+
+  for (const typename Range::value_type& elem : seq) {
+    if (idx > 0) {
+      sb << delimiter;
+    }
+    fn(sb, elem);
+
+    ++idx;
+  }
+  return sb.Release();
+}
+
+}  // namespace webrtc
+
+#endif  // RTC_BASE_STRINGS_STR_JOIN_H_