include/wx/wfstream.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/wfstream.h
   3 // Purpose:     File stream classes
   4 // Author:      Guilhem Lavaux
   5 // Modified by:
   6 // Created:     11/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Guilhem Lavaux
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_WXFSTREAM_H__
  13 #define _WX_WXFSTREAM_H__
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_STREAMS
  18
  19 #include "wx/object.h"
  20 #include "wx/string.h"
  21 #include "wx/stream.h"
  22 #include "wx/file.h"
  23 #include "wx/ffile.h"
  24
  25 #if wxUSE_FILE
  26
  27 // ----------------------------------------------------------------------------
  28 // wxFileStream using wxFile
  29 // ----------------------------------------------------------------------------
  30
  31 class WXDLLIMPEXP_BASE wxFileInputStream : public wxInputStream
  32 {
  33 public:
  34     wxFileInputStream(const wxString& ifileName);
  35     wxFileInputStream(wxFile& file);
  36     wxFileInputStream(int fd);
  37     virtual ~wxFileInputStream();
  38
  39     wxFileOffset GetLength() const;
  40
  41     bool Ok() const { return IsOk(); }
  42     virtual bool IsOk() const;
  43     bool IsSeekable() const { return m_file->GetKind() == wxFILE_KIND_DISK; }
  44
  45 protected:
  46     wxFileInputStream();
  47
  48     size_t OnSysRead(void *buffer, size_t size);
  49     wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode);
  50     wxFileOffset OnSysTell() const;
  51
  52 protected:
  53     wxFile *m_file;
  54     bool m_file_destroy;
  55
  56     DECLARE_NO_COPY_CLASS(wxFileInputStream)
  57 };
  58
  59 class WXDLLIMPEXP_BASE wxFileOutputStream : public wxOutputStream
  60 {
  61 public:
  62     wxFileOutputStream(const wxString& fileName);
  63     wxFileOutputStream(wxFile& file);
  64     wxFileOutputStream(int fd);
  65     virtual ~wxFileOutputStream();
  66
  67     void Sync();
  68     bool Close() { return m_file_destroy ? m_file->Close() : true; }
  69     wxFileOffset GetLength() const;
  70
  71     bool Ok() const { return IsOk(); }
  72     virtual bool IsOk() const;
  73     bool IsSeekable() const { return m_file->GetKind() == wxFILE_KIND_DISK; }
  74
  75 protected:
  76     wxFileOutputStream();
  77
  78     size_t OnSysWrite(const void *buffer, size_t size);
  79     wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode);
  80     wxFileOffset OnSysTell() const;
  81
  82 protected:
  83     wxFile *m_file;
  84     bool m_file_destroy;
  85
  86     DECLARE_NO_COPY_CLASS(wxFileOutputStream)
  87 };
  88
  89 class WXDLLIMPEXP_BASE wxTempFileOutputStream : public wxOutputStream
  90 {
  91 public:
  92     wxTempFileOutputStream(const wxString& fileName);
  93     virtual ~wxTempFileOutputStream();
  94
  95     bool Close() { return Commit(); }
  96     virtual bool Commit() { return m_file->Commit(); }
  97     virtual void Discard() { m_file->Discard(); }
  98
  99     wxFileOffset GetLength() const { return m_file->Length(); }
 100     bool IsSeekable() const { return true; }
 101
 102 protected:
 103     size_t OnSysWrite(const void *buffer, size_t size);
 104     wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode)
 105         { return m_file->Seek(pos, mode); }
 106     wxFileOffset OnSysTell() const { return m_file->Tell(); }
 107
 108 private:
 109     wxTempFile *m_file;
 110
 111     DECLARE_NO_COPY_CLASS(wxTempFileOutputStream)
 112 };
 113
 114 class WXDLLIMPEXP_BASE wxFileStream : public wxFileInputStream,
 115                                       public wxFileOutputStream
 116 {
 117 public:
 118     wxFileStream(const wxString& fileName);
 119
 120 private:
 121     DECLARE_NO_COPY_CLASS(wxFileStream)
 122 };
 123
 124 #endif //wxUSE_FILE
 125
 126 #if wxUSE_FFILE
 127
 128 // ----------------------------------------------------------------------------
 129 // wxFFileStream using wxFFile
 130 // ----------------------------------------------------------------------------
 131
 132 class WXDLLIMPEXP_BASE wxFFileInputStream : public wxInputStream
 133 {
 134 public:
 135     wxFFileInputStream(const wxString& fileName, const wxChar *mode = _T("rb"));
 136     wxFFileInputStream(wxFFile& file);
 137     wxFFileInputStream(FILE *file);
 138     virtual ~wxFFileInputStream();
 139
 140     wxFileOffset GetLength() const;
 141
 142     bool Ok() const { return IsOk(); }
 143     virtual bool IsOk() const;
 144     bool IsSeekable() const { return m_file->GetKind() == wxFILE_KIND_DISK; }
 145
 146 protected:
 147     wxFFileInputStream();
 148
 149     size_t OnSysRead(void *buffer, size_t size);
 150     wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode);
 151     wxFileOffset OnSysTell() const;
 152
 153 protected:
 154     wxFFile *m_file;
 155     bool m_file_destroy;
 156
 157     DECLARE_NO_COPY_CLASS(wxFFileInputStream)
 158 };
 159
 160 class WXDLLIMPEXP_BASE wxFFileOutputStream : public wxOutputStream
 161 {
 162 public:
 163     wxFFileOutputStream(const wxString& fileName, const wxChar *mode = _T("w+b"));
 164     wxFFileOutputStream(wxFFile& file);
 165     wxFFileOutputStream(FILE *file);
 166     virtual ~wxFFileOutputStream();
 167
 168     void Sync();
 169     bool Close() { return m_file_destroy ? m_file->Close() : true; }
 170     wxFileOffset GetLength() const;
 171
 172     bool Ok() const { return IsOk(); }
 173     virtual bool IsOk() const ;
 174     bool IsSeekable() const { return m_file->GetKind() == wxFILE_KIND_DISK; }
 175
 176 protected:
 177     wxFFileOutputStream();
 178
 179     size_t OnSysWrite(const void *buffer, size_t size);
 180     wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode);
 181     wxFileOffset OnSysTell() const;
 182
 183 protected:
 184     wxFFile *m_file;
 185     bool m_file_destroy;
 186
 187     DECLARE_NO_COPY_CLASS(wxFFileOutputStream)
 188 };
 189
 190 class WXDLLIMPEXP_BASE wxFFileStream : public wxFFileInputStream,
 191                                        public wxFFileOutputStream
 192 {
 193 public:
 194     wxFFileStream(const wxString& fileName);
 195
 196 private:
 197     DECLARE_NO_COPY_CLASS(wxFFileStream)
 198 };
 199
 200 #endif //wxUSE_FFILE
 201
 202 #endif // wxUSE_STREAMS
 203
 204 #endif // _WX_WXFSTREAM_H__