/cygdrive/d/src/svn/vrut/trunk/core/src/textwriter.h

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/*
 *
 * Description  : Writes text file
 * Author       : Michael Smutny smutnm2@fel.cvut.cz, Antonín Míšek antonin.misek@skoda-auto.cz
 *
 * Purpose      : Writes text to file
 */

#ifndef __TEXTWRITER__H__
#define __TEXTWRITER__H__

#include "3dmath.h"

class TextWriter
{
private:
       wxBufferedOutputStream * outputStream;

public:
       TextWriter(wxBufferedOutputStream * _outputStream) : outputStream(_outputStream) {};
       
       ~TextWriter()
       {
       };

       void SetOutputStream(wxBufferedOutputStream * _outputStream)
       {
              outputStream = _outputStream;
       }

       TextWriter* Write(const char *str)
       {
              outputStream->Write(str, strlen(str));
              return this;
       }
       
       TextWriter* Write(const char *str, size_t size)
       {
              outputStream->Write(str, size);
              return this;
       }

       TextWriter* Write(const float &val)
       {
              if (val == 0)
                     return Write("0", 1);
              if (_isnan(val))
                     return Write("1.#IND000", 9);
              char tmp[30];
              char *index=tmp+29;
              *index=0;
              int lg=log10l(fabs(val));
              int lgr=lg;
              float rpart=val;
              if ((lg<-2) || (lg>10))
              {
                     if (lg<0)
                            lg--;
                     rpart/=pow(10.0f, lg);
                     lgr=1;
                     int lgtmp=abs(lg);
                     do {
                            index--;
                            *index = (char)(lgtmp%10) + '0';
                     } while(lgtmp /= 10);
                     if (lg<0)
                     {
                            index--;
                            *index='-';
                     }
                     index--;
                     *index='e';
              }
              int ipart = rpart;
              rpart=fabs(rpart-ipart);
              int count=7-lgr;
              if (ipart==0)
                     count++;
              long ripart = rpart*pow(10.0f, count)+0.5f;
              if (ripart!=0)
              {
                     while (ripart%10==0)
                     {
                            ripart/=10;
                            count--;
                     }
                     while (count--)
                     {
                            index--;
                            *index = (char)(ripart%10) + '0';
                            ripart/=10;
                     }
                     index--;
                     *index='.';
              }
              ipart=abs(ipart);
              do {
                     index--;
                     *index = (char)(ipart%10) + '0';
              } while(ipart /= 10);
              if (val<0)
              {
                     index--;
                     *index='-';
              }
              return Write(index, tmp+29-index);
       }
       
       TextWriter* Write(const int &val)
       {
              if(val == 0)
                     return Write("0", 1);
              char tmp[30];
              char *index=tmp+29;
              *index=0;
              int numLeft = abs(val);
              do {
                     index--;
                     *index = (char)(numLeft%10) + '0';
              } while(numLeft /= 10);
              if(val < 0)
              {
                     index--;
                     *index = '-';
              }
              return Write(index, tmp+29-index);
       }
       
       TextWriter* Write(const unsigned int &val)
       {
              return Write((int)val);
       }

       TextWriter* Write(const long &val)
       {
              if(val == 0)
                     return Write("0", 1);
              char tmp[30];
              char *index=tmp+29;
              *index=0;
              long numLeft = abs(val);
              do {
                     index--;
                     *index = (char)(numLeft%10) + '0';
                     
              } while(numLeft /= 10);
              if(val < 0)
              {
                     index--;
                     *index = '-';
              }
              return Write(index, tmp+29-index);
       }

       TextWriter* Write(const wxString &str)
       {
              return Write(str.mb_str(wxConvISO8859_1), str.size());
       }

       TextWriter* Write(const float *values, int num, const char *delimiter)
       {
              for (int i=0; i<num; i++)
              {
                     if (i)
                            Write(delimiter);
                     Write(values[i]);
              }
              return this;
       }
};


#endif

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