bddd7a8d89
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21570 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/ffile.h
|
|
// Purpose: wxFFile - encapsulates "FILE *" stream
|
|
// Author: Vadim Zeitlin
|
|
// Modified by:
|
|
// Created: 14.07.99
|
|
// RCS-ID: $Id$
|
|
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
|
|
// Licence: wxWindows licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _WX_FFILE_H_
|
|
#define _WX_FFILE_H_
|
|
|
|
#if defined(__GNUG__) && !defined(__APPLE__)
|
|
#pragma interface "ffile.h"
|
|
#endif
|
|
|
|
#include "wx/defs.h" // for wxUSE_FFILE
|
|
|
|
#if wxUSE_FFILE
|
|
|
|
#ifndef WX_PRECOMP
|
|
#include "wx/string.h"
|
|
#include "wx/filefn.h"
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// class wxFFile: standard C stream library IO
|
|
//
|
|
// NB: for space efficiency this class has no virtual functions, including
|
|
// dtor which is _not_ virtual, so it shouldn't be used as a base class.
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class WXDLLIMPEXP_BASE wxFFile
|
|
{
|
|
public:
|
|
// ctors
|
|
// -----
|
|
// def ctor
|
|
wxFFile() { m_fp = NULL; }
|
|
// open specified file (may fail, use IsOpened())
|
|
wxFFile(const wxChar *filename, const wxChar *mode = _T("r"));
|
|
// attach to (already opened) file
|
|
wxFFile(FILE *fp) { m_fp = fp; }
|
|
|
|
// open/close
|
|
// open a file (existing or not - the mode controls what happens)
|
|
bool Open(const wxChar *filename, const wxChar *mode = _T("r"));
|
|
// closes the opened file (this is a NOP if not opened)
|
|
bool Close();
|
|
|
|
// assign an existing file descriptor and get it back from wxFFile object
|
|
void Attach(FILE *fp, const wxString& name = wxT(""))
|
|
{ Close(); m_fp = fp; m_name = name; }
|
|
void Detach() { m_fp = NULL; }
|
|
FILE *fp() const { return m_fp; }
|
|
|
|
// read/write (unbuffered)
|
|
// read all data from the file into a string (useful for text files)
|
|
bool ReadAll(wxString *str);
|
|
// returns number of bytes read - use Eof() and Error() to see if an error
|
|
// occured or not
|
|
size_t Read(void *pBuf, size_t nCount);
|
|
// returns the number of bytes written
|
|
size_t Write(const void *pBuf, size_t nCount);
|
|
// returns true on success
|
|
bool Write(const wxString& s, wxMBConv& conv = wxConvUTF8)
|
|
{
|
|
const wxWX2MBbuf buf = s.mb_str(conv);
|
|
size_t size = strlen(buf);
|
|
return Write((const char *)buf, size) == size;
|
|
}
|
|
// flush data not yet written
|
|
bool Flush();
|
|
|
|
// file pointer operations (return ofsInvalid on failure)
|
|
// move ptr ofs bytes related to start/current pos/end of file
|
|
bool Seek(long ofs, wxSeekMode mode = wxFromStart);
|
|
// move ptr to ofs bytes before the end
|
|
bool SeekEnd(long ofs = 0) { return Seek(ofs, wxFromEnd); }
|
|
// get current position in the file
|
|
size_t Tell() const;
|
|
// get current file length
|
|
size_t Length() const;
|
|
|
|
// simple accessors
|
|
// is file opened?
|
|
bool IsOpened() const { return m_fp != NULL; }
|
|
// is end of file reached?
|
|
bool Eof() const { return feof(m_fp) != 0; }
|
|
// is an error occured?
|
|
bool Error() const { return ferror(m_fp) != 0; }
|
|
// get the file name
|
|
const wxString& GetName() const { return m_name; }
|
|
|
|
// dtor closes the file if opened
|
|
~wxFFile() { Close(); }
|
|
|
|
private:
|
|
// copy ctor and assignment operator are private because it doesn't make
|
|
// sense to copy files this way: attempt to do it will provoke a compile-time
|
|
// error.
|
|
wxFFile(const wxFFile&);
|
|
wxFFile& operator=(const wxFFile&);
|
|
|
|
FILE *m_fp; // IO stream or NULL if not opened
|
|
|
|
wxString m_name; // the name of the file (for diagnostic messages)
|
|
};
|
|
|
|
#endif // wxUSE_FFILE
|
|
|
|
#endif // _WX_FFILE_H_
|
|
|