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translate.h

00001 
00002 // translate.h -- data translation classes for StateIn and StateOut
00003 //
00004 // Copyright (C) 1997 Limit Point Systems, Inc.
00005 //
00006 // Author: Curtis Janssen <cljanss@limitpt.com>
00007 // Maintainer: LPS
00008 //
00009 // This file is part of the SC Toolkit.
00010 //
00011 // The SC Toolkit is free software; you can redistribute it and/or modify
00012 // it under the terms of the GNU Library General Public License as published by
00013 // the Free Software Foundation; either version 2, or (at your option)
00014 // any later version.
00015 //
00016 // The SC Toolkit is distributed in the hope that it will be useful,
00017 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019 // GNU Library General Public License for more details.
00020 //
00021 // You should have received a copy of the GNU Library General Public License
00022 // along with the SC Toolkit; see the file COPYING.LIB.  If not, write to
00023 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
00024 //
00025 // The U.S. Government is granted a limited license as per AL 91-7.
00026 //
00027 
00028 #ifndef _util_state_translate_h
00029 #define _util_state_translate_h
00030 
00031 #ifdef HAVE_CONFIG_H
00032 #include <scconfig.h>
00033 #endif
00034 
00035 #if defined(WORDS_BIGENDIAN)
00036 #define BIGENDIAN 1
00037 #else
00038 #define BIGENDIAN 0
00039 #endif
00040 
00041 namespace sc {
00042 
00045 class TranslateData {
00046   public:
00047     TranslateData();
00048     virtual ~TranslateData();
00049 
00051     virtual char format_code();
00052 
00055     static TranslateData *vctor(char code);
00056 
00059     virtual void to_native  (char *,   int n);
00062     virtual void to_external(char *,   int n);
00063     virtual void to_native  (short *,  int n);
00064     virtual void to_external(short *,  int n);
00065     virtual void to_native  (unsigned int *, int n);
00066     virtual void to_external(unsigned int *, int n);
00067     virtual void to_native  (int *,    int n);
00068     virtual void to_external(int *,    int n);
00069     virtual void to_native  (long *,   int n);
00070     virtual void to_external(long *,   int n);
00071     virtual void to_native  (float *,  int n);
00072     virtual void to_external(float *,  int n);
00073     virtual void to_native  (double *, int n);
00074     virtual void to_external(double *, int n);
00075 
00078     virtual void to_native  (char *target,   const void *source,   int n);
00081     virtual void to_external(void *target,   const char *source,   int n);
00082     virtual void to_native  (short *,  const void *,   int n);
00083     virtual void to_external(void *,   const short *,  int n);
00084     virtual void to_native  (unsigned int *,    const void *,   int n);
00085     virtual void to_external(void *,   const unsigned int *,    int n);
00086     virtual void to_native  (int *,    const void *,   int n);
00087     virtual void to_external(void *,   const int *,    int n);
00088     virtual void to_native  (long *,   const void *,   int n);
00089     virtual void to_external(void *,   const long *,   int n);
00090     virtual void to_native  (float *,  const void *,   int n);
00091     virtual void to_external(void *,   const float *,  int n);
00092     virtual void to_native  (double *, const void *,   int n);
00093     virtual void to_external(void *,   const double *, int n);
00094 };
00095 
00098 class TranslateDataByteSwap: public TranslateData {
00099   public:
00100     TranslateDataByteSwap();
00101     virtual ~TranslateDataByteSwap();
00102 
00104     virtual char format_code();
00105 
00107     virtual void to_native  (char *,   int n);
00109     virtual void to_external(char *,   int n);
00110     virtual void to_native  (short *,  int n);
00111     virtual void to_external(short *,  int n);
00112     virtual void to_native  (unsigned int *, int n);
00113     virtual void to_external(unsigned int *, int n);
00114     virtual void to_native  (int *,    int n);
00115     virtual void to_external(int *,    int n);
00116     virtual void to_native  (long *,   int n);
00117     virtual void to_external(long *,   int n);
00118     virtual void to_native  (float *,  int n);
00119     virtual void to_external(float *,  int n);
00120     virtual void to_native  (double *, int n);
00121     virtual void to_external(double *, int n);
00122 
00124     virtual void to_native  (char *,   const void *,   int n);
00126     virtual void to_external(void *,   const char *,   int n);
00127     virtual void to_native  (short *,  const void *,   int n);
00128     virtual void to_external(void *,   const short *,  int n);
00129     virtual void to_native  (unsigned int *,    const void *,   int n);
00130     virtual void to_external(void *,   const unsigned int *,    int n);
00131     virtual void to_native  (int *,    const void *,   int n);
00132     virtual void to_external(void *,   const int *,    int n);
00133     virtual void to_native  (long *,   const void *,   int n);
00134     virtual void to_external(void *,   const long *,   int n);
00135     virtual void to_native  (float *,  const void *,   int n);
00136     virtual void to_external(void *,   const float *,  int n);
00137     virtual void to_native  (double *, const void *,   int n);
00138     virtual void to_external(void *,   const double *, int n);
00139 };
00140 
00141 #if BIGENDIAN
00142 typedef TranslateDataByteSwap TranslateDataLittleEndian;
00143 typedef TranslateData TranslateDataBigEndian;
00144 #else
00145 typedef TranslateDataByteSwap TranslateDataBigEndian;
00146 typedef TranslateData TranslateDataLittleEndian;
00147 #endif
00148 
00149 class StateOut;
00150 
00154 class TranslateDataOut {
00155   private:
00156     StateOut *so_;
00157     TranslateData *translate_;
00158     // the translation buffer
00159     enum { bufsize = 8192 };
00160     char buf_[bufsize];
00161   protected:
00162     int putv(const void*d,int s);
00163   public:
00166     TranslateDataOut(StateOut*s, TranslateData*t);
00167     virtual ~TranslateDataOut();
00168 
00171     virtual int put(const char*,int);
00172     virtual int put(const short*,int);
00173     virtual int put(const unsigned int*,int);
00174     virtual int put(const int*,int);
00175     virtual int put(const long*,int);
00176     virtual int put(const float*,int);
00177     virtual int put(const double*,int);
00178 
00180     TranslateData *translator() { return translate_; }
00181 };
00182 
00183 class StateIn;
00184 
00188 class TranslateDataIn {
00189   private:
00190     StateIn *si_;
00191     TranslateData *translate_;
00192   protected:
00193     int getv(void*d,int s);
00194   public:
00197     TranslateDataIn(StateIn*s, TranslateData *t);
00198     virtual ~TranslateDataIn();
00199 
00202     virtual int get(char*,int);
00203     virtual int get(short*,int);
00204     virtual int get(unsigned int*,int);
00205     virtual int get(int*,int);
00206     virtual int get(long*,int);
00207     virtual int get(float*,int);
00208     virtual int get(double*,int);
00209 
00211     TranslateData *translator() { return translate_; }
00212 };
00213 
00214 }
00215 
00216 #endif
00217 
00218 // Local Variables:
00219 // mode: c++
00220 // c-file-style: "CLJ"
00221 // End:

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