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 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18 #include <stdio.h>
  19 #include <wx/stream.h>
  20 #include <wx/fstream.h>
  21
  22 #ifdef __BORLANDC__
  23 #pragma hdrstop
  24 #endif
  25
  26 // ----------------------------------------------------------------------------
  27 // wxFileInputStream
  28 // ----------------------------------------------------------------------------
  29
  30 wxFileInputStream::wxFileInputStream(const wxString& fileName)
  31   : wxInputStream()
  32 {
  33   m_file = new wxFile(fileName, wxFile::read);
  34   m_file_destroy = TRUE;
  35   m_i_streambuf->SetBufferIO(1024);
  36 }
  37
  38 wxFileInputStream::wxFileInputStream()
  39   : wxInputStream()
  40 {
  41   m_file_destroy = FALSE;
  42   m_file = NULL;
  43 }
  44
  45 wxFileInputStream::~wxFileInputStream()
  46 {
  47   if (m_file_destroy)
  48     delete m_file;
  49 }
  50
  51 char wxFileInputStream::Peek()
  52 {
  53   return 0;
  54 }
  55
  56 size_t wxFileInputStream::DoRead(void *buffer, size_t size)
  57 {
  58   return m_file->Read(buffer, size);
  59 }
  60
  61 off_t wxFileInputStream::DoSeekInput(off_t pos, wxSeekMode mode)
  62 {
  63   return m_file->Seek(pos, mode);
  64 }
  65
  66 off_t wxFileInputStream::DoTellInput() const
  67 {
  68   return m_file->Tell();
  69 }
  70
  71 // ----------------------------------------------------------------------------
  72 // wxFileOutputStream
  73 // ----------------------------------------------------------------------------
  74
  75 wxFileOutputStream::wxFileOutputStream(const wxString& fileName)
  76 {
  77   m_file = new wxFile(fileName, wxFile::write);
  78   m_file_destroy = TRUE;
  79   m_o_streambuf->SetBufferIO(1024);
  80 }
  81
  82 wxFileOutputStream::wxFileOutputStream()
  83   : wxOutputStream()
  84 {
  85   m_o_streambuf->SetBufferIO(1024);
  86   m_file_destroy = FALSE;
  87   m_file = NULL;
  88 }
  89
  90 wxFileOutputStream::~wxFileOutputStream()
  91 {
  92   if (m_file_destroy) {
  93     Sync();
  94     delete m_file;
  95   }
  96 }
  97
  98 size_t wxFileOutputStream::DoWrite(const void *buffer, size_t size)
  99 {
 100   size_t ret = m_file->Write(buffer, size);
 101   m_bad = m_file->Error();
 102   return ret;
 103 }
 104
 105 off_t wxFileOutputStream::DoTellOutput() const
 106 {
 107   return m_file->Tell();
 108 }
 109
 110 off_t wxFileOutputStream::DoSeekOutput(off_t pos, wxSeekMode mode)
 111 {
 112   return m_file->Seek(pos, mode);
 113 }
 114
 115 void wxFileOutputStream::Sync()
 116 {
 117   wxOutputStream::Sync();
 118   m_file->Flush();
 119 }
 120
 121 // ----------------------------------------------------------------------------
 122 // wxFileStream
 123 // ----------------------------------------------------------------------------
 124
 125 wxFileStream::wxFileStream(const wxString& fileName)
 126   : wxFileInputStream(), wxFileOutputStream()
 127 {
 128   m_file = new wxFile(fileName, wxFile::read_write);
 129   // Reread the initial buffer.
 130   m_i_streambuf->SetBufferIO(1024);
 131 }
 132
 133 wxFileStream::~wxFileStream()
 134 {
 135   Sync();
 136   delete m_file;
 137 }