X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/802e2f34c12cde4c28b1a43e76e9d0f8d7f1584b..61b98a2dac629cb5dbe1a6834ace6a33ba4eb103:/src/common/wfstream.cpp

diff --git a/src/common/wfstream.cpp b/src/common/wfstream.cpp
index 3e1970a3ff..1eca40cd08 100644
--- a/src/common/wfstream.cpp
+++ b/src/common/wfstream.cpp
@@ -1,31 +1,33 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        fstream.cpp
+// Name:        src/common/wfstream.cpp
 // Purpose:     "File stream" classes
 // Author:      Julian Smart
 // Modified by:
 // Created:     11/07/98
 // RCS-ID:      $Id$
-// Copyright:   (c) Guilhem Lavaux 
-// Licence:     wxWindows license
+// Copyright:   (c) Guilhem Lavaux
+// 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
 // ----------------------------------------------------------------------------
@@ -33,65 +35,81 @@
 wxFileInputStream::wxFileInputStream(const wxString& fileName)
   : wxInputStream()
 {
-  m_file = new wxFile(fileName, wxFile::read);
-  m_file_destroy = TRUE;
+    m_file = new wxFile(fileName, wxFile::read);
+    m_file_destroy = true;
+    if ( !m_file->IsOpened() )
+        m_lasterror = wxSTREAM_READ_ERROR;
 }
 
 wxFileInputStream::wxFileInputStream()
   : wxInputStream()
 {
-  m_file_destroy = FALSE;
-  m_file = NULL;
+    m_file_destroy = false;
+    m_file = NULL;
 }
 
 wxFileInputStream::wxFileInputStream(wxFile& file)
 {
-  m_file = &file;
-  m_file_destroy = FALSE;
+    m_file = &file;
+    m_file_destroy = false;
 }
 
 wxFileInputStream::wxFileInputStream(int fd)
 {
-  m_file = new wxFile(fd);
-  m_file_destroy = TRUE;
+    m_file = new wxFile(fd);
+    m_file_destroy = true;
 }
 
 wxFileInputStream::~wxFileInputStream()
 {
-  if (m_file_destroy)
-    delete m_file;
+    if (m_file_destroy)
+        delete m_file;
 }
 
-size_t wxFileInputStream::GetSize() const
+wxFileOffset wxFileInputStream::GetLength() const
 {
-  return m_file->Length();
+    return m_file->Length();
 }
 
 size_t wxFileInputStream::OnSysRead(void *buffer, size_t size)
 {
-  off_t ret;
+    ssize_t 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)
 
-  ret = m_file->Read(buffer, size);
+    if ( !ret )
+    {
+        // 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;
+    }
 
-  m_lasterror = wxStream_NOERROR;
-  if (m_file->Eof())
-    m_lasterror = wxStream_EOF;
-  if (ret == wxInvalidOffset) {
-    m_lasterror = wxStream_READ_ERR;
-    ret = 0;
-  } 
+    return ret;
+}
 
-  return ret;
+wxFileOffset wxFileInputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
+{
+    return m_file->Seek(pos, mode);
 }
 
-off_t wxFileInputStream::OnSysSeek(off_t pos, wxSeekMode mode)
+wxFileOffset wxFileInputStream::OnSysTell() const
 {
-  return m_file->Seek(pos, mode);
+    return m_file->Tell();
 }
 
-off_t wxFileInputStream::OnSysTell() const
+bool wxFileInputStream::IsOk() const
 {
-  return m_file->Tell();
+    return wxInputStream::IsOk() && m_file->IsOpened();
 }
 
 // ----------------------------------------------------------------------------
@@ -100,218 +118,314 @@ off_t wxFileInputStream::OnSysTell() const
 
 wxFileOutputStream::wxFileOutputStream(const wxString& fileName)
 {
-  m_file = new wxFile(fileName, wxFile::write);
-  m_file_destroy = TRUE;
+    m_file = new wxFile(fileName, wxFile::write);
+    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 = &file;
+    m_file_destroy = false;
 }
 
 wxFileOutputStream::wxFileOutputStream()
-  : wxOutputStream()
+                  : wxOutputStream()
 {
-  m_file_destroy = FALSE;
-  m_file = NULL;
+    m_file_destroy = false;
+    m_file = NULL;
 }
 
 wxFileOutputStream::wxFileOutputStream(int fd)
 {
-  m_file = new wxFile(fd);
-  m_file_destroy = TRUE;
+    m_file = new wxFile(fd);
+    m_file_destroy = true;
 }
 
 wxFileOutputStream::~wxFileOutputStream()
 {
-  if (m_file_destroy) {
-    Sync();
-    delete m_file;
-  }
+    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;
-  return ret;
+    size_t ret = m_file->Write(buffer, size);
+
+    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();
+    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);
+    return m_file->Seek(pos, mode);
 }
 
 void wxFileOutputStream::Sync()
 {
-  wxOutputStream::Sync();
-  m_file->Flush();
+    wxOutputStream::Sync();
+    m_file->Flush();
+}
+
+wxFileOffset wxFileOutputStream::GetLength() const
+{
+    return m_file->Length();
 }
 
-size_t wxFileOutputStream::GetSize() const
+bool wxFileOutputStream::IsOk() const
 {
-  return m_file->Length();
+    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), wxFileOutputStream(*wxFileInputStream::m_file)
+            : wxFileInputStream(),
+              wxFileOutputStream()
+{
+    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, "r");
-  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 = NULL;
+    m_file_destroy = false;
 }
 
 wxFFileInputStream::wxFFileInputStream(wxFFile& file)
 {
-  m_file = &file;
-  m_file_destroy = FALSE;
+    m_file = &file;
+    m_file_destroy = false;
 }
 
 wxFFileInputStream::wxFFileInputStream(FILE *file)
 {
-  m_file = new wxFFile(file);
-  m_file_destroy = TRUE;
+    m_file = new wxFFile(file);
+    m_file_destroy = true;
 }
 
 wxFFileInputStream::~wxFFileInputStream()
 {
-  if (m_file_destroy)
-    delete m_file;
+    if (m_file_destroy)
+        delete m_file;
 }
 
-size_t wxFFileInputStream::GetSize() const
+wxFileOffset wxFFileInputStream::GetLength() const
 {
-  return m_file->Length();
+    return m_file->Length();
 }
 
 size_t wxFFileInputStream::OnSysRead(void *buffer, size_t size)
 {
-  off_t ret;
+    ssize_t ret = m_file->Read(buffer, size);
 
-  ret = m_file->Read(buffer, size);
+    // 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_ERROR;
+        ret = 0;
+    }
 
-  if (m_file->Eof())
-    m_lasterror = wxStream_EOF;
-  if (ret == wxInvalidOffset) {
-    m_lasterror = wxStream_READ_ERR;
-    ret = 0;
-  } 
+    return ret;
+}
 
-  return ret;
+wxFileOffset wxFFileInputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
+{
+    return m_file->Seek(pos, mode) ? m_file->Tell() : wxInvalidOffset;
 }
 
-off_t wxFFileInputStream::OnSysSeek(off_t pos, wxSeekMode mode)
+wxFileOffset wxFFileInputStream::OnSysTell() const
 {
-  return m_file->Seek(pos, mode);
+    return m_file->Tell();
 }
 
-off_t wxFFileInputStream::OnSysTell() const
+bool wxFFileInputStream::IsOk() const
 {
-  return m_file->Tell();
+    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+");
-  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 = &file;
+    m_file_destroy = false;
 }
 
 wxFFileOutputStream::wxFFileOutputStream()
-  : wxOutputStream()
+                   : wxOutputStream()
 {
-  m_file_destroy = FALSE;
-  m_file = NULL;
+    m_file = NULL;
+    m_file_destroy = false;
 }
 
 wxFFileOutputStream::wxFFileOutputStream(FILE *file)
 {
-  m_file = new wxFFile(file);
-  m_file_destroy = TRUE;
+    m_file = new wxFFile(file);
+    m_file_destroy = true;
 }
 
 wxFFileOutputStream::~wxFFileOutputStream()
 {
-  if (m_file_destroy) {
-    Sync();
-    delete m_file;
-  }
+    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;
-  else
-    m_lasterror = wxStream_NOERROR;
-  return ret;
+    size_t ret = m_file->Write(buffer, size);
+    // 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_NO_ERROR;
+    return ret;
 }
 
-off_t wxFFileOutputStream::OnSysTell() const
+wxFileOffset wxFFileOutputStream::OnSysTell() const
 {
-  return m_file->Tell();
+    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()
 {
-  wxOutputStream::Sync();
-  m_file->Flush();
+    wxOutputStream::Sync();
+    m_file->Flush();
 }
 
-size_t wxFFileOutputStream::GetSize() const
+wxFileOffset wxFFileOutputStream::GetLength() const
 {
-  return m_file->Length();
+    return m_file->Length();
+}
+
+bool wxFFileOutputStream::IsOk() const
+{
+    return wxStreamBase::IsOk() && m_file->IsOpened();
 }
 
 // ----------------------------------------------------------------------------
 // wxFFileStream
 // ----------------------------------------------------------------------------
-wxFFileStream::wxFFileStream(const wxString& fileName)
- : wxFFileInputStream(fileName), wxFFileOutputStream(*wxFFileInputStream::m_file)
+
+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;
 }
-#endif
-  // wxUSE_STREAMS && wxUSE_FILE
 
+bool wxFFileStream::IsOk() const
+{
+    return wxFFileOutputStream::IsOk() && wxFFileInputStream::IsOk();
+}
+
+#endif //wxUSE_FFILE
+
+#endif // wxUSE_STREAMS