basic/source/inc/iosys.hxx

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  30
  31 #ifndef _SBIOSYS_HXX
  32 #define _SBIOSYS_HXX
  33
  34 #include <tools/stream.hxx>
  35 #ifndef _SBERRORS_HXX
  36 #include <basic/sberrors.hxx>
  37 #endif
  38
  39 class SvStream;
  40
  41 // Zur Zeit sind globale Dateien (Kanalnummern 256 bis 511)
  42 // nicht implementiert.
  43
  44 #define CHANNELS 256
  45 #define CONSOLE  0
  46
  47 #define SBSTRM_INPUT    0x0001          // Input
  48 #define SBSTRM_OUTPUT   0x0002          // Output
  49 #define SBSTRM_RANDOM   0x0004          // Random
  50 #define SBSTRM_APPEND   0x0008          // Append
  51 #define SBSTRM_BINARY   0x0010          // Binary
  52
  53 class SbiStream {
  54     SvStream* pStrm;                            // der Stream
  55     ULONG  nExpandOnWriteTo;            // bei Schreibzugriff, den Stream
  56                                     // bis zu dieser Groesse aufblasen
  57     ByteString aLine;                           // aktuelle Zeile
  58     ULONG  nLine;                                       // aktuelle Zeilennummer
  59     short  nLen;                                        // Pufferlaenge
  60     short  nMode;                                       // Bits:
  61     short  nChan;                                       // aktueller Kanal
  62     SbError nError;                                     // letzter Fehlercode
  63     void   MapError();                          // Fehlercode mappen
  64
  65 public:
  66     SbiStream();
  67    ~SbiStream();
  68     SbError Open( short, const ByteString&, short, short, short );
  69     SbError Close();
  70     SbError Read( ByteString&, USHORT = 0, bool bForceReadingPerByte=false );
  71     SbError Read( char& );
  72     SbError Write( const ByteString&, USHORT = 0 );
  73
  74     bool IsText() const         { return (nMode & SBSTRM_BINARY) == 0; }
  75     bool IsRandom() const       { return (nMode & SBSTRM_RANDOM) != 0; }
  76     bool IsBinary() const       { return (nMode & SBSTRM_BINARY) != 0; }
  77     bool IsSeq() const          { return (nMode & SBSTRM_RANDOM) == 0; }
  78     bool IsAppend() const       { return (nMode & SBSTRM_APPEND) != 0; }
  79     short GetBlockLen() const              { return nLen;                       }
  80     short GetMode() const                          { return nMode;                      }
  81     ULONG GetLine() const                          { return nLine;                      }
  82     void SetExpandOnWriteTo( ULONG n ) { nExpandOnWriteTo = n;  }
  83     void ExpandFile();
  84     SvStream* GetStrm()                            { return pStrm;                      }
  85 };
  86
  87 class SbiIoSystem {
  88     SbiStream* pChan[ CHANNELS ];
  89     ByteString  aPrompt;                        // Input-Prompt
  90     ByteString  aIn, aOut;                      // Console-Buffer
  91     short     nChan;                            // aktueller Kanal
  92     SbError       nError;                               // letzter Fehlercode
  93     void          ReadCon( ByteString& );
  94     void          WriteCon( const ByteString& );
  95 public:
  96     SbiIoSystem();
  97    ~SbiIoSystem();
  98     SbError GetError();
  99     void  Shutdown();
 100     void  SetPrompt( const ByteString& r ) { aPrompt = r; }
 101     void  SetChannel( short n  )           { nChan = n;   }
 102     short GetChannel() const               { return nChan;}
 103     void  ResetChannel()                           { nChan = 0;   }
 104     void  Open( short, const ByteString&, short, short, short );
 105     void  Close();
 106     void  Read( ByteString&, short = 0 );
 107     char  Read();
 108     void  Write( const ByteString&, short = 0 );
 109     short NextChannel();
 110     // 0 == bad channel or no SvStream (nChannel=0..CHANNELS-1)
 111     SbiStream* GetStream( short nChannel ) const;
 112     void  CloseAll(); // JSM
 113 };
 114
 115 #endif
 116