src/common/fstream.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        fstream.cpp
   3 // Purpose:     "File stream" classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     11/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Guilhem Lavaux
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "fstream.h"
  14 #endif
  15
  16 #include <wx/object.h>
  17 #include <stdio.h>
  18 #include <wx/stream.h>
  19 #include <wx/fstream.h>
  20
  21 #define BUF_TEMP_SIZE 10000
  22
  23 #if !USE_SHARED_LIBRARY
  24 IMPLEMENT_CLASS(wxFileStreamBase, wxStream)
  25 IMPLEMENT_CLASS(wxFileInputStream, wxFileStreamBase)
  26 IMPLEMENT_CLASS(wxFileOutputStream, wxFileStreamBase)
  27 IMPLEMENT_CLASS(wxFileStream, wxFileStreamBase)
  28 #endif
  29
  30 wxFileStreamBase::wxFileStreamBase(const wxString& fileName, int iolimit)
  31   : wxStream()
  32 {
  33   char *open_mode;
  34
  35   switch (iolimit) {
  36   case 0:
  37     open_mode = "a+";
  38     break;
  39   case 1:
  40     open_mode = "rb";
  41     break;
  42   case 2:
  43     open_mode = "wb";
  44     break;
  45   }
  46   m_file = fopen(fileName, open_mode);
  47   fseek(m_file, 0, SEEK_SET);
  48
  49   m_eof = FALSE;
  50   m_bad = FALSE;
  51 }
  52
  53 wxFileStreamBase::~wxFileStreamBase()
  54 {
  55   fclose(m_file);
  56 }
  57
  58 wxInputStream& wxFileStreamBase::Read(void *buffer, size_t size)
  59 {
  60   m_lastread = fread(buffer, 1, size, m_file);
  61   m_eof = feof(m_file);
  62   return *this;
  63 }
  64
  65 wxOutputStream& wxFileStreamBase::Write(const void *buffer, size_t size)
  66 {
  67   m_lastwrite = fwrite(buffer, 1, size, m_file);
  68   m_bad = ferror(m_file) != 0;
  69   return *this;
  70 }
  71
  72 size_t wxFileStreamBase::SeekI(int pos, wxWhenceType whence)
  73 {
  74   int real_whence;
  75
  76   if (whence == wxBeginPosition)
  77     real_whence = SEEK_SET;
  78   else if (whence == wxCurrentPosition)
  79     real_whence = SEEK_CUR;
  80   else if (whence == wxEndPosition)
  81     real_whence = SEEK_END;
  82
  83   fseek(m_file, pos, real_whence);
  84   return ftell(m_file);
  85 }
  86
  87 size_t wxFileStreamBase::TellI() const
  88 {
  89   return ftell(m_file);
  90 }
  91
  92 size_t wxFileStreamBase::TellO() const
  93 {
  94   return ftell(m_file);
  95 }
  96
  97 size_t wxFileStreamBase::SeekO(int pos, wxWhenceType whence)
  98 {
  99   return SeekI(pos, whence);
 100 }
 101
 102 void wxFileStreamBase::Sync()
 103 {
 104   fflush(m_file);
 105 }