/////////////////////////////////////////////////////////////////////////////
-// Name: fstream.cpp
+// Name: src/common/fstream.cpp
// Purpose: "File stream" classes
// Author: Julian Smart
// Modified by:
// Created: 11/07/98
// RCS-ID: $Id$
// Copyright: (c) Guilhem Lavaux
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "wfstream.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
- #pragma hdrstop
+ #pragma hdrstop
#endif
-#if wxUSE_STREAMS && wxUSE_FILE
+#if wxUSE_STREAMS
-#include <stdio.h>
-#include "wx/stream.h"
#include "wx/wfstream.h"
+#ifndef WX_PRECOMP
+ #include "wx/stream.h"
+#endif
+
+#include <stdio.h>
+
+#if wxUSE_FILE
+
// ----------------------------------------------------------------------------
// wxFileInputStream
// ----------------------------------------------------------------------------
: wxInputStream()
{
m_file = new wxFile(fileName, wxFile::read);
- m_file_destroy = TRUE;
+ m_file_destroy = true;
+ if ( !m_file->IsOpened() )
+ m_lasterror = wxSTREAM_READ_ERROR;
}
wxFileInputStream::wxFileInputStream()
: wxInputStream()
{
- m_file_destroy = FALSE;
+ m_file_destroy = false;
m_file = NULL;
}
wxFileInputStream::wxFileInputStream(wxFile& file)
{
m_file = &file;
- m_file_destroy = FALSE;
+ m_file_destroy = false;
}
wxFileInputStream::wxFileInputStream(int fd)
{
m_file = new wxFile(fd);
- m_file_destroy = TRUE;
+ m_file_destroy = true;
}
wxFileInputStream::~wxFileInputStream()
delete m_file;
}
-size_t wxFileInputStream::GetSize() const
+wxFileOffset wxFileInputStream::GetLength() const
{
return m_file->Length();
}
size_t wxFileInputStream::OnSysRead(void *buffer, size_t size)
{
- off_t ret;
+ ssize_t ret = m_file->Read(buffer, size);
- ret = m_file->Read(buffer, size);
+ // NB: we can't use a switch here because HP-UX CC doesn't allow
+ // switching over long long (which size_t is in 64bit mode)
- m_lasterror = wxStream_NOERROR;
- if (m_file->Eof())
- m_lasterror = wxStream_EOF;
- if (ret == wxInvalidOffset)
+ if ( !ret )
{
- m_lasterror = wxStream_READ_ERR;
+ // nothing read, so nothing more to read
+ m_lasterror = wxSTREAM_EOF;
+ }
+ else if ( ret == wxInvalidOffset )
+ {
+ m_lasterror = wxSTREAM_READ_ERROR;
ret = 0;
}
+ else
+ {
+ // normal case
+ m_lasterror = wxSTREAM_NO_ERROR;
+ }
return ret;
}
-off_t wxFileInputStream::OnSysSeek(off_t pos, wxSeekMode mode)
+wxFileOffset wxFileInputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
{
return m_file->Seek(pos, mode);
}
-off_t wxFileInputStream::OnSysTell() const
+wxFileOffset wxFileInputStream::OnSysTell() const
{
return m_file->Tell();
}
+bool wxFileInputStream::IsOk() const
+{
+ return wxInputStream::IsOk() && m_file->IsOpened();
+}
+
// ----------------------------------------------------------------------------
// wxFileOutputStream
// ----------------------------------------------------------------------------
wxFileOutputStream::wxFileOutputStream(const wxString& fileName)
{
m_file = new wxFile(fileName, wxFile::write);
- m_file_destroy = TRUE;
+ m_file_destroy = true;
+
+ if (!m_file->IsOpened())
+ m_lasterror = wxSTREAM_WRITE_ERROR;
}
wxFileOutputStream::wxFileOutputStream(wxFile& file)
{
m_file = &file;
- m_file_destroy = FALSE;
+ m_file_destroy = false;
}
wxFileOutputStream::wxFileOutputStream()
- : wxOutputStream()
+ : wxOutputStream()
{
- m_file_destroy = FALSE;
+ m_file_destroy = false;
m_file = NULL;
}
wxFileOutputStream::wxFileOutputStream(int fd)
{
m_file = new wxFile(fd);
- m_file_destroy = TRUE;
+ m_file_destroy = true;
}
wxFileOutputStream::~wxFileOutputStream()
{
- if (m_file_destroy)
+ if (m_file_destroy)
{
Sync();
delete m_file;
size_t wxFileOutputStream::OnSysWrite(const void *buffer, size_t size)
{
size_t ret = m_file->Write(buffer, size);
- if (m_file->Error())
- m_lasterror = wxStream_WRITE_ERR;
- else
- m_lasterror = wxStream_NOERROR;
+
+ m_lasterror = m_file->Error() ? wxSTREAM_WRITE_ERROR : wxSTREAM_NO_ERROR;
+
return ret;
}
-off_t wxFileOutputStream::OnSysTell() const
+wxFileOffset wxFileOutputStream::OnSysTell() const
{
return m_file->Tell();
}
-off_t wxFileOutputStream::OnSysSeek(off_t pos, wxSeekMode mode)
+wxFileOffset wxFileOutputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
{
return m_file->Seek(pos, mode);
}
m_file->Flush();
}
-size_t wxFileOutputStream::GetSize() const
+wxFileOffset wxFileOutputStream::GetLength() const
{
return m_file->Length();
}
+bool wxFileOutputStream::IsOk() const
+{
+ return wxOutputStream::IsOk() && m_file->IsOpened();
+}
+
+// ----------------------------------------------------------------------------
+// wxTempFileOutputStream
+// ----------------------------------------------------------------------------
+
+wxTempFileOutputStream::wxTempFileOutputStream(const wxString& fileName)
+{
+ m_file = new wxTempFile(fileName);
+
+ if (!m_file->IsOpened())
+ m_lasterror = wxSTREAM_WRITE_ERROR;
+}
+
+wxTempFileOutputStream::~wxTempFileOutputStream()
+{
+ if (m_file->IsOpened())
+ Discard();
+ delete m_file;
+}
+
+size_t wxTempFileOutputStream::OnSysWrite(const void *buffer, size_t size)
+{
+ if (IsOk() && m_file->Write(buffer, size))
+ return size;
+ m_lasterror = wxSTREAM_WRITE_ERROR;
+ return 0;
+}
+
// ----------------------------------------------------------------------------
// wxFileStream
// ----------------------------------------------------------------------------
wxFileStream::wxFileStream(const wxString& fileName)
- : wxFileInputStream(fileName)
+ : wxFileInputStream(),
+ wxFileOutputStream()
{
- wxFileOutputStream::m_file = wxFileInputStream::m_file;
+ wxFileOutputStream::m_file =
+ wxFileInputStream::m_file = new wxFile(fileName, wxFile::read_write);
+
+ // this is a bit ugly as streams are symmetric but we still have to delete
+ // the file we created above exactly once so we decide to (arbitrarily) do
+ // it in wxFileInputStream
+ wxFileInputStream::m_file_destroy = true;
}
+bool wxFileStream::IsOk() const
+{
+ return wxFileOutputStream::IsOk() && wxFileInputStream::IsOk();
+}
+
+#endif // wxUSE_FILE
+
+#if wxUSE_FFILE
+
// ----------------------------------------------------------------------------
// wxFFileInputStream
// ----------------------------------------------------------------------------
-wxFFileInputStream::wxFFileInputStream(const wxString& fileName)
- : wxInputStream()
+wxFFileInputStream::wxFFileInputStream(const wxString& fileName,
+ const wxString& mode)
+ : wxInputStream()
{
- m_file = new wxFFile(fileName, "rb");
- m_file_destroy = TRUE;
+ m_file = new wxFFile(fileName, mode);
+ m_file_destroy = true;
+
+ if (!m_file->IsOpened())
+ m_lasterror = wxSTREAM_WRITE_ERROR;
}
wxFFileInputStream::wxFFileInputStream()
- : wxInputStream()
+ : wxInputStream()
{
- m_file_destroy = FALSE;
m_file = NULL;
+ m_file_destroy = false;
}
wxFFileInputStream::wxFFileInputStream(wxFFile& file)
{
m_file = &file;
- m_file_destroy = FALSE;
+ m_file_destroy = false;
}
wxFFileInputStream::wxFFileInputStream(FILE *file)
{
m_file = new wxFFile(file);
- m_file_destroy = TRUE;
+ m_file_destroy = true;
}
wxFFileInputStream::~wxFFileInputStream()
delete m_file;
}
-size_t wxFFileInputStream::GetSize() const
+wxFileOffset wxFFileInputStream::GetLength() const
{
return m_file->Length();
}
size_t wxFFileInputStream::OnSysRead(void *buffer, size_t size)
{
- off_t ret;
-
- ret = m_file->Read(buffer, size);
+ ssize_t ret = m_file->Read(buffer, size);
- if (m_file->Eof())
- m_lasterror = wxStream_EOF;
- if (ret == wxInvalidOffset)
+ // It is not safe to call Eof() if the file is not opened.
+ if (!m_file->IsOpened() || m_file->Eof())
+ m_lasterror = wxSTREAM_EOF;
+ if (ret == wxInvalidOffset)
{
- m_lasterror = wxStream_READ_ERR;
+ m_lasterror = wxSTREAM_READ_ERROR;
ret = 0;
}
return ret;
}
-off_t wxFFileInputStream::OnSysSeek(off_t pos, wxSeekMode mode)
+wxFileOffset wxFFileInputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
{
- return m_file->Seek(pos, mode);
+ return m_file->Seek(pos, mode) ? m_file->Tell() : wxInvalidOffset;
}
-off_t wxFFileInputStream::OnSysTell() const
+wxFileOffset wxFFileInputStream::OnSysTell() const
{
return m_file->Tell();
}
+bool wxFFileInputStream::IsOk() const
+{
+ return wxStreamBase::IsOk() && m_file->IsOpened();
+}
+
// ----------------------------------------------------------------------------
// wxFFileOutputStream
// ----------------------------------------------------------------------------
-wxFFileOutputStream::wxFFileOutputStream(const wxString& fileName)
+wxFFileOutputStream::wxFFileOutputStream(const wxString& fileName,
+ const wxString& mode)
{
- m_file = new wxFFile(fileName, "w+b");
- m_file_destroy = TRUE;
+ m_file = new wxFFile(fileName, mode);
+ m_file_destroy = true;
+
+ if (!m_file->IsOpened())
+ {
+ m_lasterror = wxSTREAM_WRITE_ERROR;
+ }
+ else
+ {
+ if (m_file->Error())
+ m_lasterror = wxSTREAM_WRITE_ERROR;
+ }
}
wxFFileOutputStream::wxFFileOutputStream(wxFFile& file)
{
m_file = &file;
- m_file_destroy = FALSE;
+ m_file_destroy = false;
}
wxFFileOutputStream::wxFFileOutputStream()
- : wxOutputStream()
+ : wxOutputStream()
{
- m_file_destroy = FALSE;
m_file = NULL;
+ m_file_destroy = false;
}
wxFFileOutputStream::wxFFileOutputStream(FILE *file)
{
m_file = new wxFFile(file);
- m_file_destroy = TRUE;
+ m_file_destroy = true;
}
wxFFileOutputStream::~wxFFileOutputStream()
{
- if (m_file_destroy)
+ if (m_file_destroy)
{
Sync();
delete m_file;
size_t wxFFileOutputStream::OnSysWrite(const void *buffer, size_t size)
{
size_t ret = m_file->Write(buffer, size);
- if (m_file->Error())
- m_lasterror = wxStream_WRITE_ERR;
+ // It is not safe to call Error() if the file is not opened.
+ if (!m_file->IsOpened() || m_file->Error())
+ m_lasterror = wxSTREAM_WRITE_ERROR;
else
- m_lasterror = wxStream_NOERROR;
+ m_lasterror = wxSTREAM_NO_ERROR;
return ret;
}
-off_t wxFFileOutputStream::OnSysTell() const
+wxFileOffset wxFFileOutputStream::OnSysTell() const
{
return m_file->Tell();
}
-off_t wxFFileOutputStream::OnSysSeek(off_t pos, wxSeekMode mode)
+wxFileOffset wxFFileOutputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
{
- return m_file->Seek(pos, mode);
+ return m_file->Seek(pos, mode) ? m_file->Tell() : wxInvalidOffset;
}
void wxFFileOutputStream::Sync()
m_file->Flush();
}
-size_t wxFFileOutputStream::GetSize() const
+wxFileOffset wxFFileOutputStream::GetLength() const
{
return m_file->Length();
}
+bool wxFFileOutputStream::IsOk() const
+{
+ return wxStreamBase::IsOk() && m_file->IsOpened();
+}
+
// ----------------------------------------------------------------------------
// wxFFileStream
// ----------------------------------------------------------------------------
-wxFFileStream::wxFFileStream(const wxString& fileName)
- : wxFFileInputStream(fileName)
+wxFFileStream::wxFFileStream(const wxString& fileName, const wxString& mode)
+ : wxFFileInputStream(),
+ wxFFileOutputStream()
+{
+ wxASSERT_MSG( mode.find_first_of('+') != wxString::npos,
+ "must be opened in read-write mode for this class to work" );
+
+ wxFFileOutputStream::m_file =
+ wxFFileInputStream::m_file = new wxFFile(fileName, mode);
+
+ // see comment in wxFileStream ctor
+ wxFFileInputStream::m_file_destroy = true;
+}
+
+bool wxFFileStream::IsOk() const
{
- wxFFileOutputStream::m_file = wxFFileInputStream::m_file;
+ return wxFFileOutputStream::IsOk() && wxFFileInputStream::IsOk();
}
-#endif
- // wxUSE_STREAMS && wxUSE_FILE
+#endif //wxUSE_FFILE
+#endif // wxUSE_STREAMS
projects / wxWidgets.git / blobdiff