implemented fallback for AlphaBlend() for the systems not supporting it

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

diff --git a/src/common/textfile.cpp b/src/common/textfile.cpp
index 77510ace07e8c07a1cd2cec3f4e80615cbf0fe89..219b1b26f7ef0be94da820e06ff9db55eefea20f 100644 (file)
--- a/src/common/textfile.cpp
+++ b/src/common/textfile.cpp
@@ -6,7 +6,7 @@
 // Created:     03.04.98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
@@ -31,13 +31,14 @@
 #if wxUSE_TEXTFILE
 
 #ifndef WX_PRECOMP
-    #include  "wx/string.h"
-    #include  "wx/intl.h"
-    #include  "wx/file.h"
-    #include  "wx/log.h"
+    #include "wx/string.h"
+    #include "wx/intl.h"
+    #include "wx/file.h"
+    #include "wx/log.h"
 #endif
 
 #include "wx/textfile.h"
+#include "wx/filename.h"
 
 // ============================================================================
 // wxTextFile class implementation
@@ -61,21 +62,22 @@ bool wxTextFile::OnExists() const
 
 bool wxTextFile::OnOpen(const wxString &strBufferName, wxTextBufferOpenMode OpenMode)
 {
-    wxFile::OpenMode FileOpenMode = wxFile::read;
-    int                             nAssertVal = 0;
+    wxFile::OpenMode FileOpenMode;
+
+    switch ( OpenMode )
+    {
+        default:
+            wxFAIL_MSG( _T("unknown open mode in wxTextFile::Open") );
+            // fall through
 
-    switch (OpenMode)
-  {
         case ReadAccess :
             FileOpenMode = wxFile::read;
             break;
+
         case WriteAccess :
             FileOpenMode = wxFile::write;
             break;
-        default :
-            wxASSERT(nAssertVal); // Should not happen.
-            break;
-  }
+    }
 
     return m_file.Open(strBufferName.c_str(), FileOpenMode);
 }
@@ -89,89 +91,106 @@ bool wxTextFile::OnClose()
 
 bool wxTextFile::OnRead(wxMBConv& conv)
 {
-  // file should be opened and we must be in it's beginning
-  wxASSERT( m_file.IsOpened() && m_file.Tell() == 0 );
-
-#if wxUSE_UNICODE
-  char conv_mbBuf[2];
-  wchar_t conv_wcBuf[2];
-  conv_mbBuf[1] = 0;
-#else
-  (void)conv;
-#endif
-
-  wxString str;
-  char ch, chLast = '\0';
-  char buf[1024];
-  int n, nRead;
-  do {
-    nRead = m_file.Read(buf, WXSIZEOF(buf));
-    if ( nRead == wxInvalidOffset ) {
-      // read error (error message already given in wxFile::Read)
-      return FALSE;
-    }
-
-    for ( n = 0; n < nRead; n++ ) {
-      ch = buf[n];
-      switch ( ch ) {
-        case '\n':
-          // Dos/Unix line termination
-                AddLine(str, chLast == '\r' ? wxTextFileType_Dos
-                                      : wxTextFileType_Unix);
-          str.Empty();
-          chLast = '\n';
-          break;
-
-        case '\r':
-          if ( chLast == '\r' ) {
-            // Mac empty line
-                    AddLine(wxEmptyString, wxTextFileType_Mac);
-          }
-          else
-            chLast = '\r';
-          break;
-
-        default:
-          if ( chLast == '\r' ) {
-            // Mac line termination
-                    AddLine(str, wxTextFileType_Mac);
-            chLast = ch;
-#if wxUSE_UNICODE
-            conv_mbBuf[0] = ch;
-            if (conv.MB2WC(conv_wcBuf, conv_mbBuf, 2) == (size_t)-1)
-                conv_wcBuf[0] = ch;
-            str = conv_wcBuf[0];
-#else
-            str = ch;
-#endif
-          }
-          else {
-            // add to the current line
-#if wxUSE_UNICODE
-            conv_mbBuf[0] = ch;
-            if (conv.MB2WC(conv_wcBuf, conv_mbBuf, 2) == (size_t)-1)
-                conv_wcBuf[0] = ch;
-            str += conv_wcBuf[0];
-#else
-            str += ch;
-#endif
-          }
-      }
+    // file should be opened and we must be in it's beginning
+    wxASSERT( m_file.IsOpened() && m_file.Tell() == 0 );
+
+    char *strBuf, *strPtr, *strEnd;
+    char ch, chLast = '\0';
+    char buf[1024];
+    int n, nRead;
+
+    strPtr = strBuf = new char[1024];
+    strEnd = strBuf + 1024;
+
+    do 
+    {
+        nRead = m_file.Read(buf, WXSIZEOF(buf));
+        if ( nRead == wxInvalidOffset ) 
+        {
+            // read error (error message already given in wxFile::Read)
+            delete[] strBuf;
+            return FALSE;
+        }
+
+        for (n = 0; n < nRead; n++)
+        {
+            ch = buf[n];
+            switch ( ch ) 
+            {
+                case '\n':
+                    // Dos/Unix line termination
+                    *strPtr = '\0';
+                    AddLine(wxString(strBuf, conv), 
+                            chLast == '\r' ? wxTextFileType_Dos
+                                           : wxTextFileType_Unix);
+                    strPtr = strBuf;
+                    chLast = '\n';
+                    break;
+
+                case '\r':
+                    if ( chLast == '\r' ) 
+                    {
+                        // Mac empty line
+                        AddLine(wxEmptyString, wxTextFileType_Mac);
+                    }
+                    else
+                        chLast = '\r';
+                    break;
+
+                default:
+                    if ( chLast == '\r' )
+                    {
+                        // Mac line termination
+                        *strPtr = '\0';
+                        AddLine(wxString(strBuf, conv), wxTextFileType_Mac);
+                        chLast = ch;
+                        strPtr = strBuf;
+                        *(strPtr++) = ch;
+                    }
+                    else 
+                    {
+                        // add to the current line
+                        *(strPtr++) = ch;
+                        if ( strPtr == strEnd )
+                        {
+                            // we must allocate more memory
+                            size_t size = strEnd - strBuf;
+                            char *newBuf = new char[size + 1024];
+                            memcpy(newBuf, strBuf, size);
+                            delete[] strBuf;
+                            strBuf = newBuf;
+                            strEnd = strBuf + size + 1024;
+                            strPtr = strBuf + size;
+                        }
+                    }
+            }
+        }
+    } while ( nRead == WXSIZEOF(buf) );
+
+    // anything in the last line?
+    if ( strPtr != strBuf ) 
+    {
+        *strPtr = '\0';
+        AddLine(wxString(strBuf, conv), 
+                wxTextFileType_None); // no line terminator
     }
-  } while ( nRead == WXSIZEOF(buf) );
-
-  // anything in the last line?
-  if ( !str.IsEmpty() ) {
-        AddLine(str, wxTextFileType_None);  // no line terminator
-  }
 
-  return TRUE;
+    delete[] strBuf;
+    return TRUE;
 }
 
 
 bool wxTextFile::OnWrite(wxTextFileType typeNew, wxMBConv& conv)
 {
-    wxTempFile fileTmp(m_strBufferName);
+    wxFileName fn = m_strBufferName;
+
+    // We do NOT want wxPATH_NORM_CASE here, or the case will not
+    // be preserved.
+    if ( !fn.IsAbsolute() )
+        fn.Normalize(wxPATH_NORM_ENV_VARS | wxPATH_NORM_DOTS | wxPATH_NORM_TILDE |
+                     wxPATH_NORM_ABSOLUTE | wxPATH_NORM_LONG);
+
+    wxTempFile fileTmp(fn.GetFullPath());
 
     if ( !fileTmp.IsOpened() ) {
         wxLogError(_("can't write buffer '%s' to disk."), m_strBufferName.c_str());