/usr/include/wx-3.0/wx/ffile.h is in wx3.0-headers 3.0.4+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Name: wx/ffile.h
// Purpose: wxFFile - encapsulates "FILE *" stream
// Author: Vadim Zeitlin
// Modified by:
// Created: 14.07.99
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_FFILE_H_
#define _WX_FFILE_H_
#include "wx/defs.h" // for wxUSE_FFILE
#if wxUSE_FFILE
#include "wx/string.h"
#include "wx/filefn.h"
#include "wx/convauto.h"
#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 wxString& filename, const wxString& mode = wxT("r"));
// attach to (already opened) file
wxFFile(FILE *lfp) { m_fp = lfp; }
// open/close
// open a file (existing or not - the mode controls what happens)
bool Open(const wxString& filename, const wxString& mode = wxT("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 *lfp, const wxString& name = wxEmptyString)
{ Close(); m_fp = lfp; m_name = name; }
FILE* Detach() { FILE* fpOld = m_fp; m_fp = NULL; return fpOld; }
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, const wxMBConv& conv = wxConvAuto());
// returns number of bytes read - use Eof() and Error() to see if an error
// occurred 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, const wxMBConv& conv = wxConvAuto());
// 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(wxFileOffset ofs, wxSeekMode mode = wxFromStart);
// move ptr to ofs bytes before the end
bool SeekEnd(wxFileOffset ofs = 0) { return Seek(ofs, wxFromEnd); }
// get current position in the file
wxFileOffset Tell() const;
// get current file length
wxFileOffset Length() const;
// simple accessors: note that Eof() and Error() may only be called if
// IsOpened()!
// is file opened?
bool IsOpened() const { return m_fp != NULL; }
// is end of file reached?
bool Eof() const { return feof(m_fp) != 0; }
// has an error occurred?
bool Error() const { return ferror(m_fp) != 0; }
// get the file name
const wxString& GetName() const { return m_name; }
// type such as disk or pipe
wxFileKind GetKind() const { return wxGetFileKind(m_fp); }
// 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_
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