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     WXEXPORT virtual bool Commit() { return m_file->Commit(); }
  97     WXEXPORT 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     virtual bool IsOk() const;
 120
 121 private:
 122     DECLARE_NO_COPY_CLASS(wxFileStream)
 123 };
 124
 125 #endif //wxUSE_FILE
 126
 127 #if wxUSE_FFILE
 128
 129 // ----------------------------------------------------------------------------
 130 // wxFFileStream using wxFFile
 131 // ----------------------------------------------------------------------------
 132
 133 class WXDLLIMPEXP_BASE wxFFileInputStream : public wxInputStream
 134 {
 135 public:
 136     wxFFileInputStream(const wxString& fileName, const wxString& mode = "rb");
 137     wxFFileInputStream(wxFFile& file);
 138     wxFFileInputStream(FILE *file);
 139     virtual ~wxFFileInputStream();
 140
 141     wxFileOffset GetLength() const;
 142
 143     bool Ok() const { return IsOk(); }
 144     virtual bool IsOk() const;
 145     bool IsSeekable() const { return m_file->GetKind() == wxFILE_KIND_DISK; }
 146
 147 protected:
 148     wxFFileInputStream();
 149
 150     size_t OnSysRead(void *buffer, size_t size);
 151     wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode);
 152     wxFileOffset OnSysTell() const;
 153
 154 protected:
 155     wxFFile *m_file;
 156     bool m_file_destroy;
 157
 158     DECLARE_NO_COPY_CLASS(wxFFileInputStream)
 159 };
 160
 161 class WXDLLIMPEXP_BASE wxFFileOutputStream : public wxOutputStream
 162 {
 163 public:
 164     wxFFileOutputStream(const wxString& fileName, const wxString& mode = "wb");
 165     wxFFileOutputStream(wxFFile& file);
 166     wxFFileOutputStream(FILE *file);
 167     virtual ~wxFFileOutputStream();
 168
 169     void Sync();
 170     bool Close() { return m_file_destroy ? m_file->Close() : true; }
 171     wxFileOffset GetLength() const;
 172
 173     bool Ok() const { return IsOk(); }
 174     virtual bool IsOk() const;
 175     bool IsSeekable() const { return m_file->GetKind() == wxFILE_KIND_DISK; }
 176
 177 protected:
 178     wxFFileOutputStream();
 179
 180     size_t OnSysWrite(const void *buffer, size_t size);
 181     wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode);
 182     wxFileOffset OnSysTell() const;
 183
 184 protected:
 185     wxFFile *m_file;
 186     bool m_file_destroy;
 187
 188     DECLARE_NO_COPY_CLASS(wxFFileOutputStream)
 189 };
 190
 191 class WXDLLIMPEXP_BASE wxFFileStream : public wxFFileInputStream,
 192                                        public wxFFileOutputStream
 193 {
 194 public:
 195     wxFFileStream(const wxString& fileName, const wxString& mode = "w+b");
 196     virtual bool IsOk() const;
 197
 198 private:
 199     DECLARE_NO_COPY_CLASS(wxFFileStream)
 200 };
 201
 202 #endif //wxUSE_FFILE
 203
 204 #endif // wxUSE_STREAMS
 205
 206 #endif // _WX_WXFSTREAM_H__