added wxConvFileName which is a variable, not define as wxConvFile; added comments...

[wxWidgets.git] / src / common / wfstream.cpp

diff --git a/src/common/wfstream.cpp b/src/common/wfstream.cpp
index 8e731791bf62b11d69d03a8732a46b16f1f94f1e..9d15b4f9b65d501e7dd71a5bce998b04666b42fa 100644 (file)
--- a/src/common/wfstream.cpp
+++ b/src/common/wfstream.cpp
@@ -20,12 +20,14 @@
   #pragma hdrstop
 #endif
 
-#if wxUSE_STREAMS && wxUSE_FILE
+#if wxUSE_STREAMS
 
 #include <stdio.h>
 #include "wx/stream.h"
 #include "wx/wfstream.h"
 
+#if wxUSE_FILE
+
 // ----------------------------------------------------------------------------
 // wxFileInputStream
 // ----------------------------------------------------------------------------
@@ -69,7 +71,7 @@ wxFileOffset wxFileInputStream::GetLength() const
 
 size_t wxFileInputStream::OnSysRead(void *buffer, size_t size)
 {
-    size_t ret = m_file->Read(buffer, size);
+    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)
@@ -79,7 +81,7 @@ size_t wxFileInputStream::OnSysRead(void *buffer, size_t size)
         // nothing read, so nothing more to read
         m_lasterror = wxSTREAM_EOF;
     }
-    else if ( ret == (size_t)wxInvalidOffset )
+    else if ( ret == wxInvalidOffset )
     {
         m_lasterror = wxSTREAM_READ_ERROR;
         ret = 0;
@@ -181,6 +183,33 @@ wxFileOffset wxFileOutputStream::GetLength() const
     return m_file->Length();
 }
 
+// ----------------------------------------------------------------------------
+// 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
 // ----------------------------------------------------------------------------
@@ -191,22 +220,27 @@ wxFileStream::wxFileStream(const wxString& fileName)
     wxFileOutputStream::m_file = wxFileInputStream::m_file;
 }
 
+#endif //wxUSE_FILE
+
+#if wxUSE_FFILE
+
 // ----------------------------------------------------------------------------
 // wxFFileInputStream
 // ----------------------------------------------------------------------------
 
-wxFFileInputStream::wxFFileInputStream(const wxString& fileName)
-  : wxInputStream()
+wxFFileInputStream::wxFFileInputStream(const wxString& fileName,
+                                       const wxChar *mode)
+                  : wxInputStream()
 {
-    m_file = new wxFFile(fileName, _T("rb"));
+    m_file = new wxFFile(fileName, mode);
     m_file_destroy = true;
 }
 
 wxFFileInputStream::wxFFileInputStream()
-  : wxInputStream()
+                  : wxInputStream()
 {
-    m_file_destroy = false;
     m_file = NULL;
+    m_file_destroy = false;
 }
 
 wxFFileInputStream::wxFFileInputStream(wxFFile& file)
@@ -234,11 +268,12 @@ wxFileOffset wxFFileInputStream::GetLength() const
 
 size_t wxFFileInputStream::OnSysRead(void *buffer, size_t size)
 {
-    size_t ret = m_file->Read(buffer, size);
+    ssize_t ret = m_file->Read(buffer, size);
 
-    if (m_file->Eof())
+    // 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 == (size_t)wxInvalidOffset)
+    if (ret == wxInvalidOffset)
     {
         m_lasterror = wxSTREAM_READ_ERROR;
         ret = 0;
@@ -249,13 +284,7 @@ size_t wxFFileInputStream::OnSysRead(void *buffer, size_t size)
 
 wxFileOffset wxFFileInputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
 {
-#ifdef __VMS
-#pragma message disable intsignchange
-#endif
-   return ( m_file->Seek(pos, mode) ? (wxFileOffset)m_file->Tell() : wxInvalidOffset );
-#ifdef __VMS
-#pragma message enable intsignchange
-#endif
+    return m_file->Seek(pos, mode) ? m_file->Tell() : wxInvalidOffset;
 }
 
 wxFileOffset wxFFileInputStream::OnSysTell() const
@@ -267,9 +296,10 @@ wxFileOffset wxFFileInputStream::OnSysTell() const
 // wxFFileOutputStream
 // ----------------------------------------------------------------------------
 
-wxFFileOutputStream::wxFFileOutputStream(const wxString& fileName)
+wxFFileOutputStream::wxFFileOutputStream(const wxString& fileName,
+                                         const wxChar *mode)
 {
-    m_file = new wxFFile(fileName, _T("w+b"));
+    m_file = new wxFFile(fileName, mode);
     m_file_destroy = true;
 
     if (!m_file->IsOpened())
@@ -290,10 +320,10 @@ wxFFileOutputStream::wxFFileOutputStream(wxFFile& file)
 }
 
 wxFFileOutputStream::wxFFileOutputStream()
-  : wxOutputStream()
+                   : wxOutputStream()
 {
-    m_file_destroy = false;
     m_file = NULL;
+    m_file_destroy = false;
 }
 
 wxFFileOutputStream::wxFFileOutputStream(FILE *file)
@@ -314,7 +344,8 @@ wxFFileOutputStream::~wxFFileOutputStream()
 size_t wxFFileOutputStream::OnSysWrite(const void *buffer, size_t size)
 {
     size_t ret = m_file->Write(buffer, size);
-    if (m_file->Error())
+    // 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;
@@ -328,13 +359,7 @@ wxFileOffset wxFFileOutputStream::OnSysTell() const
 
 wxFileOffset wxFFileOutputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
 {
-#ifdef __VMS
-#pragma message disable intsignchange
-#endif
-    return ( m_file->Seek(pos, mode) ? (wxFileOffset)m_file->Tell() : wxInvalidOffset );
-#ifdef __VMS
-#pragma message enable intsignchange
-#endif
+    return m_file->Seek(pos, mode) ? m_file->Tell() : wxInvalidOffset;
 }
 
 void wxFFileOutputStream::Sync()
@@ -358,6 +383,7 @@ wxFFileStream::wxFFileStream(const wxString& fileName)
     wxFFileOutputStream::m_file = wxFFileInputStream::m_file;
 }
 
-#endif
-  // wxUSE_STREAMS && wxUSE_FILE
+#endif //wxUSE_FFILE
+
+#endif // wxUSE_STREAMS