scheme.h

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/*
Copyright (c) 2009 zooml.com

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#ifndef __TERRALIB_COMMON_INTERNAL_SCHEME_H
#define __TERRALIB_COMMON_INTERNAL_SCHEME_H
#include "../Config.h"
#include <string>
#include <iostream>
namespace te
{
  namespace common
  {
    namespace uri
    {
      /** \brief URI scheme component.
       *
       * Syntax:
       * <pre>
       * scheme = ALPHA *( ALPHA | DIGIT | "+" | "-" | "." )
       * </pre>
       * @see http://tools.ietf.org/html/rfc3986#section-3.1 */
      class TECOMMONEXPORT scheme {
      public:
          scheme(); ///< Construct null.
          /// Construct from string. This will convert to lower case
          /// and check for valid chars. Does not include the ":".
          /// Note that the string cannot be empty, it must contain
          /// chars that are valid for the scheme.
          /// @exception std::invalid_argument if invalid
          scheme(const std::string& v);
          bool empty() const {return is_null();} ///< Test if null/empty.
          bool is_null() const {return string_.empty();} ///< Test if null/empty.
          const std::string& string() const {return string_;} ///< Get string.
      private:
          friend bool TECOMMONEXPORT parse(std::string::const_iterator& first, std::string::const_iterator last, scheme& v, char* endc);
          std::string string_;
      };
      /// Stream out URI scheme.
      inline std::ostream& operator <<(std::ostream& os, const scheme& v) {return os << v.string();}
      /// Parse URI scheme, returning whether found or not
      /// and advancing first and setting scheme and end char if found.
      /// Does not skip leading space.
      bool TECOMMONEXPORT parse(std::string::const_iterator& first, std::string::const_iterator last, scheme& v, char* endc = 0);
    }
  }
}
#endif