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diff --git a/bindings/cpp/include/serd/detail/StringView.hpp b/bindings/cpp/include/serd/detail/StringView.hpp
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+++ b/bindings/cpp/include/serd/detail/StringView.hpp
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+/*
+  Copyright 2019-2020 David Robillard <http://drobilla.net>
+
+  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.
+
+  THIS 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.
+*/
+
+#ifndef SERD_DETAIL_STRINGVIEW_HPP
+#define SERD_DETAIL_STRINGVIEW_HPP
+
+#include <algorithm>
+#include <cstddef>
+#include <cstring>
+#include <ostream>
+#include <stdexcept>
+#include <string>
+
+namespace serd {
+namespace detail {
+
+/**
+   Immutable slice of a string.
+
+   This is a minimal implementation that is compatible with std::string_view
+   and std::string for most basic use cases.  This could be replaced with
+   std::string_view once C++17 support can be relied on.
+*/
+class StringView
+{
+public:
+  using char_type       = char;
+  using size_type       = size_t;
+  using traits_type     = std::char_traits<char>;
+  using value_type      = char;
+  using pointer         = value_type*;
+  using const_pointer   = const value_type*;
+  using reference       = value_type&;
+  using const_reference = const value_type&;
+  using iterator        = const char*;
+  using const_iterator  = const char*;
+
+  static constexpr size_type npos = size_t(-1);
+
+  constexpr StringView() noexcept = default;
+
+  constexpr StringView(const char* const str, const size_t len) noexcept
+    : _str{str}
+    , _len{len}
+  {}
+
+  // NOLINTNEXTLINE(google-explicit-constructor, hicpp-explicit-conversions)
+  StringView(const char* const str) noexcept
+    : _str{str}
+    , _len{str ? strlen(str) : 0}
+  {}
+
+  // NOLINTNEXTLINE(google-explicit-constructor, hicpp-explicit-conversions)
+  StringView(const std::string& str) noexcept
+    : _str{str.c_str()}
+    , _len{str.length()}
+  {}
+
+  constexpr size_t      size() const { return _len; }
+  constexpr size_t      length() const { return _len; }
+  constexpr bool        empty() const { return _len == 0; }
+  constexpr const char* c_str() const { return _str; }
+  constexpr const char* data() const { return _str; }
+  constexpr const char& front() const { return _str[0]; }
+  constexpr const char& back() const { return _str[_len - 1]; }
+
+  constexpr const_iterator begin() const { return _str; }
+  constexpr const_iterator end() const { return _str + _len; }
+  constexpr const_iterator cbegin() const { return begin(); }
+  constexpr const_iterator cend() const { return end(); }
+
+  constexpr const char& operator[](const size_t pos) const { return _str[pos]; }
+
+  const char& at(const size_t pos) const
+  {
+    if (pos >= size()) {
+      throw std::out_of_range("serd::StringView::at pos");
+    }
+
+    return _str[pos];
+  }
+
+  StringView substr(const size_t pos) const
+  {
+    if (pos > size()) {
+      throw std::out_of_range("serd::StringView::substr pos");
+    }
+
+    return StringView{data() + pos, size() - pos};
+  }
+
+  StringView substr(const size_t pos, const size_t n) const
+  {
+    if (pos > size()) {
+      throw std::out_of_range("serd::StringView::substr pos");
+    }
+
+    return StringView{data() + pos, std::min(size() - pos, n)};
+  }
+
+  int compare(StringView rhs) const noexcept
+  {
+    if (!data() && !rhs.data()) {
+      return 0;
+    }
+
+    if (!data()) {
+      return -1;
+    }
+
+    if (!rhs.data()) {
+      return 1;
+    }
+
+    const size_type len = std::min(size(), rhs.size());
+    const int       cmp = strncmp(data(), rhs.data(), len);
+
+    if (cmp) {
+      return cmp;
+    }
+
+    if (size() == rhs.size()) {
+      return 0;
+    }
+
+    if (size() < rhs.size()) {
+      return -1;
+    }
+
+    return 1;
+  }
+
+  template<class Alloc = std::allocator<char>>
+  std::basic_string<char, traits_type, Alloc> str() const
+  {
+    return std::basic_string<char, traits_type, Alloc>(data(), size(), Alloc{});
+  }
+
+  template<class Alloc = std::allocator<char>>
+  std::basic_string<char, traits_type, Alloc> str(const Alloc& alloc) const
+  {
+    return std::basic_string<char, traits_type, Alloc>(data(), size(), alloc);
+  }
+
+  explicit operator std::string() const { return str(); }
+
+  explicit operator const char*() const { return _str; }
+
+  // NOLINTNEXTLINE(hicpp-explicit-conversions)
+  operator const SerdStringView() const { return SerdStringView{_str, _len}; }
+
+private:
+  const char* const _str{};
+  const size_t      _len{};
+};
+
+inline bool
+operator==(const detail::StringView& lhs, const detail::StringView& rhs)
+{
+  return !lhs.compare(rhs);
+}
+
+inline bool
+operator==(const detail::StringView& lhs, const std::string& rhs)
+{
+  return lhs.length() == rhs.length() &&
+         !strncmp(lhs.c_str(), rhs.c_str(), lhs.length());
+}
+
+inline bool
+operator==(const detail::StringView& lhs, const char* rhs)
+{
+  return !strncmp(lhs.c_str(), rhs, lhs.length());
+}
+
+inline bool
+operator!=(const detail::StringView& lhs, const detail::StringView& rhs)
+{
+  return lhs.compare(rhs);
+}
+
+inline bool
+operator!=(const detail::StringView& lhs, const std::string& rhs)
+{
+  return lhs.length() != rhs.length() ||
+         !!strncmp(lhs.c_str(), rhs.c_str(), lhs.length());
+}
+
+inline bool
+operator!=(const detail::StringView& lhs, const char* rhs)
+{
+  return !!strncmp(lhs.c_str(), rhs, lhs.length());
+}
+
+inline bool
+operator<(const detail::StringView& lhs, const detail::StringView& rhs)
+{
+  return lhs.compare(rhs) < 0;
+}
+
+inline bool
+operator<(const detail::StringView& lhs, const std::string& rhs)
+{
+  return lhs.c_str() < StringView(rhs);
+}
+
+inline bool
+operator<(const detail::StringView& lhs, const char* rhs)
+{
+  return strncmp(lhs.c_str(), rhs, lhs.length()) < 0;
+}
+
+inline std::ostream&
+operator<<(std::ostream& os, const StringView& str)
+{
+  os.write(str.data(), std::streamsize(str.size()));
+  return os;
+}
+
+} // namespace detail
+} // namespace serd
+
+#endif // SERD_DETAIL_STRINGVIEW_HPP