monitor/src/misc/StreamAsString.h

   1 #ifndef AESALON_MISC_STREAM_AS_STRING_H
   2 #define AESALON_MISC_STREAM_AS_STRING_H
   3
   4 #include <string>
   5 #include <sstream>
   6
   7 namespace Aesalon {
   8 namespace Misc {
   9
  10 /** StreamAsString class.
  11
  12     Allows for nice inline stringstreams, such as
  13 Exception(StreamAsString() << "Exception occured, line " << __line__);
  14 */
  15 class StreamAsString {
  16 public:
  17     /** Automatic conversion to a std::string.
  18         @return The internal stringstream, converted to a std::string.
  19     */
  20     operator std::string() const {
  21         return get_stream().str();
  22     }
  23     /** Add something onto the internal std::stringstream.
  24         @param data The data to add.
  25         @return The new stringstream, with the data added.
  26     */
  27     template<typename Type>
  28     StreamAsString &operator<<(const Type &data) {
  29         get_stream() << data;
  30
  31         return *this;
  32     }
  33 protected:
  34     /** Get the internal stringstream.
  35         @return The internal stringstream, in non-const form.
  36     */
  37     std::ostringstream &get_stream() { return stream; }
  38     /** Get the internal stringstream.
  39         @return The internal stringstream, in const form.
  40     */
  41     const std::ostringstream &get_stream() const { return stream; }
  42 private:
  43     /** The internal stringstream. */
  44     std::ostringstream stream;
  45 };
  46
  47 } // namespace Misc
  48 } // namespace Aesalon
  49
  50 #endif