Added thirdparty: boost library

thirdparty/include/boost/thread/detail/string_trim.hpp

@@ -0,0 +1,29 @@
+#ifndef BOOST_THREAD_DETAIL_STRING_TRIM_HPP_INCLUDED
+#define BOOST_THREAD_DETAIL_STRING_TRIM_HPP_INCLUDED
+
+// Copyright 2023 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <string>
+
+namespace boost
+{
+namespace thread_detail
+{
+
+inline std::string string_trim( std::string const& s )
+{
+    std::size_t i = s.find_first_not_of( " \t\r\n" );
+
+    if( i == std::string::npos ) return std::string();
+
+    std::size_t j = s.find_last_not_of( " \t\r\n" );
+
+    return s.substr( i, j + 1 - i );
+}
+
+} // namespace thread_detail
+} // namespace boost
+
+#endif // #ifndef BOOST_THREAD_DETAIL_STRING_TRIM_HPP_INCLUDED