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::StreamSize() const
  57 {
  58   return m_file->Length();
  59 }
  60
  61 size_t wxFileInputStream::OnSysRead(void *buffer, size_t size)
  62 {
  63   return m_file->Read(buffer, size);
  64 }
  65
  66 off_t wxFileInputStream::OnSysSeek(off_t pos, wxSeekMode mode)
  67 {
  68   return m_file->Seek(pos, mode);
  69 }
  70
  71 off_t wxFileInputStream::OnSysTell() const
  72 {
  73   return m_file->Tell();
  74 }
  75
  76 // ----------------------------------------------------------------------------
  77 // wxFileOutputStream
  78 // ----------------------------------------------------------------------------
  79
  80 wxFileOutputStream::wxFileOutputStream(const wxString& fileName)
  81 {
  82   m_file = new wxFile(fileName, wxFile::write);
  83   m_file_destroy = TRUE;
  84   m_o_streambuf->SetBufferIO(1024);
  85 }
  86
  87 wxFileOutputStream::wxFileOutputStream(wxFile& file)
  88 {
  89   m_file = &file;
  90   m_file_destroy = FALSE;
  91   m_o_streambuf->SetBufferIO(1024);
  92 }
  93
  94 wxFileOutputStream::wxFileOutputStream()
  95   : wxOutputStream()
  96 {
  97   m_o_streambuf->SetBufferIO(1024);
  98   m_file_destroy = FALSE;
  99   m_file = NULL;
 100 }
 101
 102 wxFileOutputStream::~wxFileOutputStream()
 103 {
 104   if (m_file_destroy) {
 105     Sync();
 106     delete m_file;
 107   }
 108 }
 109
 110 size_t wxFileOutputStream::OnSysWrite(const void *buffer, size_t size)
 111 {
 112   size_t ret = m_file->Write(buffer, size);
 113   m_lasterror = wxStream_EOF; // TODO
 114   return ret;
 115 }
 116
 117 off_t wxFileOutputStream::OnSysTell() const
 118 {
 119   return m_file->Tell();
 120 }
 121
 122 off_t wxFileOutputStream::OnSysSeek(off_t pos, wxSeekMode mode)
 123 {
 124   return m_file->Seek(pos, mode);
 125 }
 126
 127 void wxFileOutputStream::Sync()
 128 {
 129   wxOutputStream::Sync();
 130   m_file->Flush();
 131 }
 132
 133 size_t wxFileOutputStream::StreamSize() const
 134 {
 135   return m_file->Length();
 136 }
 137
 138 // ----------------------------------------------------------------------------
 139 // wxFileStream
 140 // ----------------------------------------------------------------------------
 141 wxFileStream::wxFileStream(const wxString& fileName)
 142  : wxFileInputStream(fileName), wxFileOutputStream(*wxFileInputStream::m_file)
 143 {
 144 }