headers/private/storage/sniffer/CharStream.h

   1 //----------------------------------------------------------------------
   2 //  This software is part of the OpenBeOS distribution and is covered
   3 //  by the MIT License.
   4 //---------------------------------------------------------------------
   5 /*!
   6         \file sniffer/CharStream.h
   7         Character stream class
   8 */
   9 #ifndef _SNIFFER_CHAR_STREAM_H
  10 #define _SNIFFER_CHAR_STREAM_H
  11
  12 #include <SupportDefs.h>
  13
  14 #include <string>
  15
  16 namespace BPrivate {
  17 namespace Storage {
  18 namespace Sniffer {
  19
  20 //! Manages a stream of characters
  21 /*! CharStream is used by the scanner portion of the parser, which is implemented
  22         in TokenStream::SetTo().
  23
  24         It's also used by BPrivate::TRoster while parsing through the the
  25         roster's RosterSettings file.
  26 */
  27 class CharStream {
  28 public:
  29         CharStream(const std::string &string);
  30         CharStream();
  31         virtual ~CharStream();
  32
  33         status_t SetTo(const std::string &string);
  34         void Unset();
  35         status_t InitCheck() const;
  36         bool IsEmpty() const;
  37         size_t Pos() const;
  38         const std::string& String() const;
  39
  40         char Get();
  41         void Unget();
  42
  43 private:
  44         std::string fString;
  45         size_t fPos;
  46         status_t fCStatus;
  47
  48         CharStream(const CharStream &ref);
  49         CharStream& operator=(const CharStream &ref);
  50 };
  51
  52 };      // namespace Sniffer
  53 };      // namespace Storage
  54 };      // namespace BPrivate
  55
  56 #endif // _SNIFFER_CHAR_STREAM_H