+class IconvProcessor
+{
+public:
+ IconvProcessor(char const * tocode = "", char const * fromcode = "");
+ /// copy constructor needed because of pimpl_
+ IconvProcessor(IconvProcessor const &);
+ /// assignment operator needed because of pimpl_
+ void operator=(IconvProcessor const &);
+ /// destructor
+ ~IconvProcessor();
+
+ /// convert any data from \c fromcode to \c tocode unicode format.
+ /// \return the number of bytes of the converted output buffer.
+ int convert(char const * in_buffer, size_t in_size,
+ char * out_buffer, size_t max_out_size);
+
+ /// source encoding
+ std::string from() const;
+ /// target encoding
+ std::string to() const;
+
+private:
+ /// open iconv.
+ /// \return true if the processor is ready to use.
+ bool init();
+ /// hide internals
+ struct Impl;
+ Impl * pimpl_;
+};