8b4ae731d3
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76220 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
264 lines
7.5 KiB
C++
264 lines
7.5 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/wfstream.h
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// Purpose: File stream classes
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// Author: Guilhem Lavaux
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// Modified by:
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// Created: 11/07/98
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// Copyright: (c) Guilhem Lavaux
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_WXFSTREAM_H__
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#define _WX_WXFSTREAM_H__
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#include "wx/defs.h"
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#if wxUSE_STREAMS
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#include "wx/object.h"
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#include "wx/string.h"
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#include "wx/stream.h"
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#include "wx/file.h"
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#include "wx/ffile.h"
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#if wxUSE_FILE
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// ----------------------------------------------------------------------------
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// wxFileStream using wxFile
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxFileInputStream : public wxInputStream
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{
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public:
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wxFileInputStream(const wxString& ifileName);
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wxFileInputStream(wxFile& file);
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wxFileInputStream(int fd);
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virtual ~wxFileInputStream();
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virtual wxFileOffset GetLength() const wxOVERRIDE;
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bool Ok() const { return IsOk(); }
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virtual bool IsOk() const wxOVERRIDE;
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virtual bool IsSeekable() const wxOVERRIDE { return m_file->GetKind() == wxFILE_KIND_DISK; }
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wxFile* GetFile() const { return m_file; }
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protected:
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wxFileInputStream();
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virtual size_t OnSysRead(void *buffer, size_t size) wxOVERRIDE;
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virtual wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) wxOVERRIDE;
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virtual wxFileOffset OnSysTell() const wxOVERRIDE;
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protected:
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wxFile *m_file;
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bool m_file_destroy;
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wxDECLARE_NO_COPY_CLASS(wxFileInputStream);
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};
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class WXDLLIMPEXP_BASE wxFileOutputStream : public wxOutputStream
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{
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public:
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wxFileOutputStream(const wxString& fileName);
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wxFileOutputStream(wxFile& file);
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wxFileOutputStream(int fd);
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virtual ~wxFileOutputStream();
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void Sync() wxOVERRIDE;
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bool Close() wxOVERRIDE { return m_file_destroy ? m_file->Close() : true; }
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virtual wxFileOffset GetLength() const wxOVERRIDE;
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bool Ok() const { return IsOk(); }
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virtual bool IsOk() const wxOVERRIDE;
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virtual bool IsSeekable() const wxOVERRIDE { return m_file->GetKind() == wxFILE_KIND_DISK; }
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wxFile* GetFile() const { return m_file; }
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protected:
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wxFileOutputStream();
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virtual size_t OnSysWrite(const void *buffer, size_t size) wxOVERRIDE;
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virtual wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) wxOVERRIDE;
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virtual wxFileOffset OnSysTell() const wxOVERRIDE;
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protected:
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wxFile *m_file;
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bool m_file_destroy;
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wxDECLARE_NO_COPY_CLASS(wxFileOutputStream);
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};
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class WXDLLIMPEXP_BASE wxTempFileOutputStream : public wxOutputStream
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{
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public:
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wxTempFileOutputStream(const wxString& fileName);
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virtual ~wxTempFileOutputStream();
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bool Close() wxOVERRIDE { return Commit(); }
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WXDLLIMPEXP_INLINE_BASE virtual bool Commit() { return m_file->Commit(); }
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WXDLLIMPEXP_INLINE_BASE virtual void Discard() { m_file->Discard(); }
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virtual wxFileOffset GetLength() const wxOVERRIDE { return m_file->Length(); }
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virtual bool IsSeekable() const wxOVERRIDE { return true; }
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protected:
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virtual size_t OnSysWrite(const void *buffer, size_t size) wxOVERRIDE;
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virtual wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) wxOVERRIDE
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{ return m_file->Seek(pos, mode); }
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virtual wxFileOffset OnSysTell() const wxOVERRIDE { return m_file->Tell(); }
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private:
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wxTempFile *m_file;
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wxDECLARE_NO_COPY_CLASS(wxTempFileOutputStream);
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};
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class WXDLLIMPEXP_BASE wxFileStream : public wxFileInputStream,
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public wxFileOutputStream
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{
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public:
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wxFileStream(const wxString& fileName);
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virtual bool IsOk() const wxOVERRIDE;
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// override (some) virtual functions inherited from both classes to resolve
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// ambiguities (this wouldn't be necessary if wxStreamBase were a virtual
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// base class but it isn't)
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virtual bool IsSeekable() const wxOVERRIDE
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{
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return wxFileInputStream::IsSeekable();
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}
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virtual wxFileOffset GetLength() const wxOVERRIDE
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{
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return wxFileInputStream::GetLength();
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}
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protected:
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virtual wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) wxOVERRIDE
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{
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return wxFileInputStream::OnSysSeek(pos, mode);
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}
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virtual wxFileOffset OnSysTell() const wxOVERRIDE
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{
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return wxFileInputStream::OnSysTell();
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}
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private:
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wxDECLARE_NO_COPY_CLASS(wxFileStream);
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};
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#endif //wxUSE_FILE
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#if wxUSE_FFILE
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// ----------------------------------------------------------------------------
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// wxFFileStream using wxFFile
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxFFileInputStream : public wxInputStream
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{
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public:
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wxFFileInputStream(const wxString& fileName, const wxString& mode = "rb");
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wxFFileInputStream(wxFFile& file);
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wxFFileInputStream(FILE *file);
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virtual ~wxFFileInputStream();
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virtual wxFileOffset GetLength() const wxOVERRIDE;
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bool Ok() const { return IsOk(); }
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virtual bool IsOk() const wxOVERRIDE;
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virtual bool IsSeekable() const wxOVERRIDE { return m_file->GetKind() == wxFILE_KIND_DISK; }
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wxFFile* GetFile() const { return m_file; }
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protected:
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wxFFileInputStream();
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virtual size_t OnSysRead(void *buffer, size_t size) wxOVERRIDE;
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virtual wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) wxOVERRIDE;
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virtual wxFileOffset OnSysTell() const wxOVERRIDE;
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protected:
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wxFFile *m_file;
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bool m_file_destroy;
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wxDECLARE_NO_COPY_CLASS(wxFFileInputStream);
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};
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class WXDLLIMPEXP_BASE wxFFileOutputStream : public wxOutputStream
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{
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public:
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wxFFileOutputStream(const wxString& fileName, const wxString& mode = "wb");
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wxFFileOutputStream(wxFFile& file);
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wxFFileOutputStream(FILE *file);
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virtual ~wxFFileOutputStream();
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void Sync() wxOVERRIDE;
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bool Close() wxOVERRIDE { return m_file_destroy ? m_file->Close() : true; }
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virtual wxFileOffset GetLength() const wxOVERRIDE;
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bool Ok() const { return IsOk(); }
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virtual bool IsOk() const wxOVERRIDE;
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virtual bool IsSeekable() const wxOVERRIDE { return m_file->GetKind() == wxFILE_KIND_DISK; }
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wxFFile* GetFile() const { return m_file; }
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protected:
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wxFFileOutputStream();
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virtual size_t OnSysWrite(const void *buffer, size_t size) wxOVERRIDE;
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virtual wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) wxOVERRIDE;
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virtual wxFileOffset OnSysTell() const wxOVERRIDE;
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protected:
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wxFFile *m_file;
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bool m_file_destroy;
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wxDECLARE_NO_COPY_CLASS(wxFFileOutputStream);
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};
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class WXDLLIMPEXP_BASE wxFFileStream : public wxFFileInputStream,
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public wxFFileOutputStream
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{
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public:
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wxFFileStream(const wxString& fileName, const wxString& mode = "w+b");
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// override some virtual functions to resolve ambiguities, just as in
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// wxFileStream
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virtual bool IsOk() const wxOVERRIDE;
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virtual bool IsSeekable() const wxOVERRIDE
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{
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return wxFFileInputStream::IsSeekable();
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}
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virtual wxFileOffset GetLength() const wxOVERRIDE
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{
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return wxFFileInputStream::GetLength();
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}
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protected:
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virtual wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) wxOVERRIDE
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{
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return wxFFileInputStream::OnSysSeek(pos, mode);
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}
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virtual wxFileOffset OnSysTell() const wxOVERRIDE
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{
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return wxFFileInputStream::OnSysTell();
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}
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private:
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wxDECLARE_NO_COPY_CLASS(wxFFileStream);
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};
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#endif //wxUSE_FFILE
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#endif // wxUSE_STREAMS
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#endif // _WX_WXFSTREAM_H__
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