added support for std::string_view for tables and fields

include/amqpcpp/fieldproxy.h

@@ -2,7 +2,7 @@
  *  Field proxy. Returned by the table. Can be casted to the
  *  relevant native type (std::string or numeric)
  *
- *  @copyright 2014 Copernica BV
+ *  @copyright 2014 - 2024 Copernica BV
  */
 
 /**
@@ -207,6 +207,22 @@ public:
         return *this;
     }
 
+    /**
+     *  Assign a string value
+     *
+     *  @param  value
+     *  @return FieldProxy
+     */
+    FieldProxy &operator=(const std::string_view &value)
+    {
+        // in theory we should make a distinction between short and long string,
+        // but in practive only long strings are accepted
+        _source->set(_index, LongString(value));
+
+        // allow chaining
+        return *this;
+    }
+
     /**
      *  Assign a string value
      *

include/amqpcpp/table.h

@@ -138,6 +138,7 @@ public:
     Table &set(const std::string &name, uint64_t value) { return set(name, ULongLong(value)); }
     Table &set(const std::string &name, int64_t value) { return set(name, LongLong(value)); }
     Table &set(const std::string &name, const std::string &value) { return set(name, LongString(value)); }
+    Table &set(const std::string &name, const std::string_view &value) { return set(name, LongString(value)); }
     Table &set(const std::string &name, const char *value) { return set(name, LongString(std::string(value))); }
     Table &set(const std::string &name, std::nullptr_t) { return set(name, VoidField()); }