binfilter/inc/bf_sw/swgstr.hxx

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  30
  31 #ifndef _SWGSTR_HXX
  32 #define _SWGSTR_HXX
  33
  34 #ifndef _STREAM_HXX //autogen
  35 #include <tools/stream.hxx>
  36 #endif
  37 namespace binfilter {
  38
  39 typedef long long3;                                             // Zur Dokumentation: 3-byte-Longs
  40
  41 #define MAX_BEGIN 64                                    // Maximale Blockschachtelung
  42 #define PASSWDLEN 16                                    // Maximale Passwortlaenge
  43
  44 // Neue Version mit SvStreams
  45
  46 // Passwort- und Codierungs-Funktionalitaet
  47
  48 class swcrypter {
  49 protected:
  50     sal_Char   cPasswd[ PASSWDLEN ];    // Passwort-Puffer
  51     BOOL   bPasswd;                     // TRUE wenn mit Passwort
  52     void   encode( sal_Char*, USHORT ); // Puffer codieren/decodieren
  53 public:
  54     swcrypter();
  55     BOOL setpasswd( const String& );    // Passwort setzen
  56     void copypasswd( const sal_Char* ); // Passwort direkt setzen
  57     const sal_Char* getpasswd() { return cPasswd; }
  58 };
  59
  60 // Reader/Writer-Stream-Basisklasse mit Pufferverwaltung fuer Texte
  61 // und Spezial-I/O fuer 3-Byte-Longs
  62
  63 class swstreambase : public swcrypter {
  64 protected:
  65     SvStream* pStrm;                    // eigentlicher Stream
  66     sal_Char*  pBuf;                        // Zwischenpuffer
  67     USHORT nBuflen;                     // Laenge des Zwischenpuffers
  68     short  nLong;                       // Long-Laenge (3 oder 4)
  69     BOOL   bTempStrm;                   // TRUE: Stream loeschen
  70     void   checkbuf( USHORT );          // Testen der Pufferlaenge
  71
  72     swstreambase( SvStream& );
  73
  74     swstreambase( const swstreambase& );
  75     int operator=( const swstreambase& );
  76 public:
  77     ~swstreambase();
  78     SvStream& Strm()                    { return *pStrm; }
  79     sal_Char* GetBuf()                  { return pBuf; }
  80
  81     // Zusatzfunktionen zur I/O von LONGs als 3-Byte-Zahlen
  82
  83     void long3()                        { nLong = 3; }
  84     void long4()                        { nLong = 4; }
  85
  86     void sync( swstreambase& r )        { pStrm->Seek( r.tell() ); }
  87
  88     // Alias- und Hilfsfunktionen
  89
  90     void seek( long nPos )              { pStrm->Seek( nPos );  }
  91     long tell()                         { return pStrm->Tell(); }
  92     long filesize();                    // Dateigroesse
  93     void flush()                        { pStrm->Flush(); }
  94
  95     void setbad();
  96     int good()                          { return ( pStrm->GetError() == SVSTREAM_OK ); }
  97     int bad()                           { return ( pStrm->GetError() != SVSTREAM_OK ); }
  98     int operator!()                     { return ( pStrm->GetError() != SVSTREAM_OK ); }
  99     int eof()                           { return pStrm->IsEof(); }
 100
 101     BYTE get();
 102     void get( void* p, USHORT n )       { pStrm->Read( (sal_Char*) p, n ); }
 103
 104     inline swstreambase& operator>>( sal_Char& );
 105     inline swstreambase& operator>>( BYTE& );
 106     inline swstreambase& operator>>( short& );
 107     inline swstreambase& operator>>( USHORT& );
 108            swstreambase& operator>>( long& );
 109     inline swstreambase& operator>>( ULONG& );
 110 };
 111
 112 inline swstreambase& swstreambase::operator>>( sal_Char& c )
 113 {
 114     *pStrm >> c; return *this;
 115 }
 116
 117 inline swstreambase& swstreambase::operator>>( BYTE& c )
 118 {
 119     *pStrm >> c; return *this;
 120 }
 121
 122 inline swstreambase& swstreambase::operator>>( short& c )
 123 {
 124     *pStrm >> c; return *this;
 125 }
 126
 127 inline swstreambase& swstreambase::operator>>( USHORT& c )
 128 {
 129     *pStrm >> c; return *this;
 130 }
 131
 132 inline swstreambase& swstreambase::operator>>( ULONG& c )
 133 {
 134     return *this >> (long&) c;
 135 }
 136
 137 class swistream : public swstreambase {
 138     BYTE   cType;                       // Record-Typ
 139     ULONG  nOffset;                     // Record-Offset-Portion
 140 public:
 141     swistream( SvStream& );
 142
 143     BYTE peek();                        // 1 Byte testen
 144     BYTE next();                        // Blockstart
 145     BYTE cur() { return cType; }        // aktueller Block
 146     BYTE skipnext();                    // Record ueberspringen
 147     void undonext();                    // next() rueckgaengig machen
 148     long getskip()                      { return nOffset; }
 149     void skip( long = -1L );            // Block ueberspringen
 150     sal_Char* text();                   // Textstring lesen (nach BEGIN)
 151     long size();                        // aktuelle Record-Laenge
 152
 153 private:
 154     swistream( const swistream& );
 155     int operator=( const swistream& );
 156 };
 157
 158
 159 } //namespace binfilter
 160 #endif