src/servers/registrar/RosterSettingsCharStream.h

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  22 //      File Name:              RecentApps.cpp
  23 //      Author:                 Tyler Dauwalder (tyler@dauwalder.net)
  24 //      Description:    Recently launched apps list
  25 //------------------------------------------------------------------------------
  26 /*!
  27         \file sniffer/RosterSettingsCharStream.h
  28         Character stream class
  29 */
  30 #ifndef _ROSTER_SETTINGS_CHAR_STREAM_H
  31 #define _ROSTER_SETTINGS_CHAR_STREAM_H
  32
  33 #include <sniffer/CharStream.h>
  34 #include <SupportDefs.h>
  35
  36 #include <string>
  37
  38 //! A character stream manager designed for use with RosterSettings files
  39 /*! The purpose for this class is to make reading through RosterSettings files,
  40         which contain a number of different types of strings (some with escapes),
  41         as well as comments, as painless as possible.
  42
  43         The main idea is that GetString() will return \c B_OK and a new string
  44         until it hits an error or the end of the line, at which point an error
  45         code is returned. The next call to GetString() starts the cycle over on
  46         the next line. When the end of the stream is finally hit, kEndOfStream is
  47         returned.
  48
  49         SkipLine() simply moves the position of the stream to the next line, and is
  50         used when a valid string containing invalid data is discovered in the middle
  51         of a line.
  52 */
  53 class RosterSettingsCharStream : public BPrivate::Storage::Sniffer::CharStream {
  54 public:
  55         RosterSettingsCharStream(const std::string &string);
  56         RosterSettingsCharStream();
  57         virtual ~RosterSettingsCharStream();
  58
  59         status_t GetString(char *result);
  60         status_t SkipLine();
  61
  62         static const status_t kEndOfLine                                = B_ERRORS_END+1;
  63         static const status_t kEndOfStream                              = B_ERRORS_END+2;
  64         static const status_t kInvalidEscape                    = B_ERRORS_END+3;
  65         static const status_t kUnterminatedQuotedString = B_ERRORS_END+4;
  66         static const status_t kComment                                  = B_ERRORS_END+5;
  67         static const status_t kUnexpectedState                  = B_ERRORS_END+6;
  68         static const status_t kStringTooLong                    = B_ERRORS_END+7;
  69 private:
  70         RosterSettingsCharStream(const RosterSettingsCharStream &ref);
  71         RosterSettingsCharStream& operator=(const RosterSettingsCharStream &ref);
  72 };
  73
  74 #endif // _ROSTER_SETTINGS_CHAR_STREAM_H