ZText.h

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#ifndef __Text_h
#define __Text_h
#include <stdio.h>
#include <zlib.h>
#include <sys/stat.h>
#ifdef USEQPE
#include <qpe/global.h>
#endif

#include "CExpander.h"

class Text: public CExpander {
  gzFile file;
  unsigned long fsize;
public:
  void suspend()
      {
#ifdef USEQPE
        if (!bSuspended)
          {
            bSuspended = true;
            suspos = gztell(file);
            gzclose(file);
            file = NULL;
            sustime = time(NULL);
          }
#endif
      }
  void unsuspend()
      {
#ifdef USEQPE
          if (bSuspended)
          {
              bSuspended = false;
              if (sustime != ((time_t)-1))
                {
                  int delay = time(NULL) - sustime;
                  if (delay < 10)
                    {
                      Global::statusMessage("Stalling");
                      sleep(10-delay);
                    }
                }
              file = gzopen(fname, "rb");
              for (int i = 0; file == NULL && i < 5; i++)
                {
                  Global::statusMessage("Stalling");
                  sleep(5);
                  file = gzopen(fname, "rb");
                }
              if (file == NULL)
              {
                  QMessageBox::warning(NULL, PROGNAME, "Couldn't reopen file");
                  exit(0);
              }
              suspos = gzseek(file, suspos, SEEK_SET);
          }
#endif
      }
  Text() : file(NULL) {};
  virtual ~Text()
    {
      if (file != NULL)
        {
#ifdef USEQPE
          unsuspend();
#endif
          gzclose(file);
        }
    }
  int OpenFile(const char *src)
    {
       if (file != NULL) gzclose(file);
      struct stat _stat;
      stat(src,&_stat);
      fsize = _stat.st_size;
      return ((file = gzopen(src,"rb")) == NULL);
    }
  int getch()
    {
#ifdef USEQPE
      unsuspend();
#endif
      return gzgetc(file);
    }
  unsigned int locate()
    {
#ifdef USEQPE
      unsuspend();
#endif
      return gztell(file);
    }
  void locate(unsigned int n)
    {
#ifdef USEQPE
      unsuspend();
#endif
      gzseek(file,n,SEEK_SET);
    }
  bool hasrandomaccess() { return true; }
  void sizes(unsigned long& _file, unsigned long& _text)
    {
      _text = _file = fsize;
      FILE* f = fopen(fname, "rb");
      if (f != NULL)
      {
          unsigned char mn[2];
          fread(mn, 1, 2, f);
          if ((mn[0] == 31) && (mn[1] == 139))
          {
                  int tmp = sizeof(_text);
              fseek(f,-tmp,SEEK_END);
              fread(&_text, sizeof(_text), 1, f);
          }
          fclose(f);
      }
    }
  MarkupType PreferredMarkup()
      {
          return cTEXT;
      }
  QString about() { return QString("Text/gzipped text codec (c) Tim Wentford"); }
};
#endif

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