Fix toolbar background painting whem comctl32 < 6

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

diff --git a/src/common/textfile.cpp b/src/common/textfile.cpp
index 678ddcc688d73c6f228ca33076476947510b0897..3334375b44ccc6027877a82873e99fab621035e6 100644 (file)
--- a/src/common/textfile.cpp
+++ b/src/common/textfile.cpp
@@ -1,239 +1,233 @@
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////

-// Name:        textfile.cpp
+// Name:        src/common/textfile.cpp

 // Purpose:     implementation of wxTextFile class
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     03.04.98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
 // Purpose:     implementation of wxTextFile class
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     03.04.98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>

-// Licence:     wxWindows license
+// Licence:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 // headers
 // ============================================================================
 
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 // headers
 // ============================================================================
 

-#ifdef __GNUG__
-#pragma implementation "textfile.h"
-#endif
-

 #include  "wx/wxprec.h"
 
 #ifdef    __BORLANDC__
 #include  "wx/wxprec.h"
 
 #ifdef    __BORLANDC__

-  #pragma hdrstop
+    #pragma hdrstop

 #endif  //__BORLANDC__
 
 #endif  //__BORLANDC__
 

-#include  <wx/string.h>
-#include  <wx/intl.h>
-#include  <wx/file.h>
-#include  <wx/log.h>
-#include  <wx/textfile.h>
+#if !wxUSE_FILE || !wxUSE_TEXTBUFFER
+    #undef wxUSE_TEXTFILE
+    #define wxUSE_TEXTFILE 0
+#endif // wxUSE_FILE

 
 

-// ============================================================================
-// wxTextFile class implementation
-// ============================================================================
+#if wxUSE_TEXTFILE

 
 

-// ----------------------------------------------------------------------------
-// static variables
-// ----------------------------------------------------------------------------
-
-// default type is the native one
-const wxTextFile::Type wxTextFile::typeDefault = wxTextFile::
-#if   defined(__WXMSW__)
-  Type_Dos;
-#elif defined(__UNIX__)
-  Type_Unix;
-#elif defined(__MAC__)
-  Type_Mac;
-  // if you feel brave, remove the next line
-  #error  "wxTextFile: code for Mac files is untested."
-#else
-  Type_None;
-  #error  "wxTextFile: unsupported platform."
+#ifndef WX_PRECOMP
+    #include "wx/string.h"
+    #include "wx/intl.h"
+    #include "wx/file.h"
+    #include "wx/log.h"

 #endif
 
 #endif
 

+#include "wx/textfile.h"
+#include "wx/filename.h"
+#include "wx/buffer.h"

 
 

-// ----------------------------------------------------------------------------
-// ctors & dtor
-// ----------------------------------------------------------------------------
+// ============================================================================
+// wxTextFile class implementation
+// ============================================================================

 
 

-wxTextFile::wxTextFile(const wxString& strFile) : m_strFile(strFile)
+wxTextFile::wxTextFile(const wxString& strFileName)
+          : wxTextBuffer(strFileName)

 {
 }
 
 {
 }
 

-wxTextFile::~wxTextFile()
-{
-  // m_file dtor called automatically
-}

 
 // ----------------------------------------------------------------------------
 // file operations
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // file operations
 // ----------------------------------------------------------------------------
 

-bool wxTextFile::Open(const wxString& strFile)
+bool wxTextFile::OnExists() const

 {
 {

-  m_strFile = strFile;
-  return Open();
+    return wxFile::Exists(m_strBufferName);

 }
 
 }
 

-bool wxTextFile::Open()
-{
-  // file name must be either given in ctor or in Open(const wxString&)
-  wxASSERT( !m_strFile.IsEmpty() );
-
-  // open file in read-only mode
-  if ( !m_file.Open(m_strFile) )
-    return FALSE;

 
 

-  // read file into memory
-  bool bRet = Read();
+bool wxTextFile::OnOpen(const wxString &strBufferName, wxTextBufferOpenMode OpenMode)
+{
+    wxFile::OpenMode FileOpenMode;

 
 

-  m_file.Close();
+    switch ( OpenMode )
+    {
+        default:
+            wxFAIL_MSG( _T("unknown open mode in wxTextFile::Open") );
+            // fall through

 
 

-  return bRet;
-}
+        case ReadAccess :
+            FileOpenMode = wxFile::read;
+            break;

 
 

-// analyse some lines of the file trying to guess it's type.
-// if it fails, it assumes the native type for our platform.
-wxTextFile::Type wxTextFile::GuessType() const
-{
-  // file should be opened and we must be in it's beginning
-  wxASSERT( m_file.IsOpened() && m_file.Tell() == 0 );
-
-  // scan the file lines
-  uint nUnix = 0,     // number of '\n's alone
-       nDos  = 0,     // number of '\r\n'
-       nMac  = 0;     // number of '\r's
-
-  // we take MAX_LINES_SCAN in the beginning, middle and the end of file
-  #define MAX_LINES_SCAN    (10)
-  uint nCount = m_aLines.Count() / 3,
-       nScan =  nCount > 3*MAX_LINES_SCAN ? MAX_LINES_SCAN : nCount / 3;
-
-  #define   AnalyseLine(n)              \
-    switch ( m_aTypes[n] ) {            \
-      case Type_Unix: nUnix++; break;   \
-      case Type_Dos:  nDos++;  break;   \
-      case Type_Mac:  nMac++;  break;   \
-      default: wxFAIL_MSG("unknown line terminator"); \
+        case WriteAccess :
+            FileOpenMode = wxFile::write;
+            break;

     }
 
     }
 

-  uint n;
-  for ( n = 0; n < nScan; n++ )     // the beginning
-    AnalyseLine(n);
-  for ( n = (nCount - nScan)/2; n < (nCount + nScan)/2; n++ )
-    AnalyseLine(n);
-  for ( n = nCount - nScan; n < nCount; n++ )
-    AnalyseLine(n);
-
-  #undef   AnalyseLine
-
-  // interpret the results (@@ far from being even 50% fool proof)
-  if ( nDos + nUnix + nMac == 0 ) {
-    // no newlines at all
-    wxLogWarning(_("'%s' is probably a binary file."), m_strFile.c_str());
-  }
-  else {
-    #define   GREATER_OF(t1, t2) n##t1 == n##t2 ? typeDefault               \
-                                                : n##t1 > n##t2 ? Type_##t1 \
-                                                                : Type_##t2
-
-    if ( nDos > nUnix )
-      return GREATER_OF(Dos, Mac);
-    else if ( nDos < nUnix )
-      return GREATER_OF(Unix, Mac);
-    else {
-      // nDos == nUnix
-      return nMac > nDos ? Type_Mac : typeDefault;
-    }
+    return m_file.Open(strBufferName.c_str(), FileOpenMode);
+}

 
 

-    #undef    GREATER_OF
-  }

 
 

-  return typeDefault;
+bool wxTextFile::OnClose()
+{
+    return m_file.Close();

 }
 
 }
 

-bool wxTextFile::Read()
+
+bool wxTextFile::OnRead(const wxMBConv& conv)

 {
 {

-  // file should be opened and we must be in it's beginning
-  wxASSERT( m_file.IsOpened() && m_file.Tell() == 0 );
-
-  wxString str;
-  char ch, chLast = '\0';
-  char buf[1024];
-  int n, nRead;
-  while ( !m_file.Eof() ) {
-    nRead = m_file.Read(buf, WXSIZEOF(buf));
-    if ( nRead == ofsInvalid ) {
-      // read error (error message already given in wxFile::Read)
-      m_file.Close();
-      return FALSE;
+    // file should be opened and we must be in it's beginning
+    wxASSERT( m_file.IsOpened() && m_file.Tell() == 0 );
+
+    // read the entire file in memory: this is not the most efficient thing to
+    // do but there is no good way to avoid it in Unicode build because if we
+    // read the file block by block we can't convert each block to Unicode
+    // separately (the last multibyte char in the block might be only partially
+    // read and so the conversion would fail) and, as the file contents is kept
+    // in memory by wxTextFile anyhow, it shouldn't be a big problem to read
+    // the file entirely
+    const size_t bufSize = (size_t)(m_file.Length() + 4 /* for trailing NULs */ );
+    size_t bufPos = 0;
+    wxCharBuffer buf(bufSize - 1 /* it adds 1 internally */);
+
+    char block[1024];
+    for ( bool eof = false; !eof; )
+    {
+        // try to read up to the size of the entire block
+        ssize_t nRead = m_file.Read(block, WXSIZEOF(block));
+
+        if ( nRead == wxInvalidOffset )
+        {
+            // read error (error message already given in wxFile::Read)
+            return false;
+        }
+
+        if ( nRead == 0 )
+            break;
+
+        // this shouldn't happen but don't overwrite the buffer if it does
+        wxCHECK_MSG( bufPos + nRead <= bufSize, false,
+                     _T("read more than file length?") );
+
+        // append to the buffer
+        memcpy(buf.data() + bufPos, block, nRead);
+        bufPos += nRead;

     }
 
     }
 

-    #ifdef  __MAC__
-      #pragma message("wxTextFile::Read() hasn't been tested with Mac files.")
-    #endif
-
-    for ( n = 0; n < nRead; n++ ) {
-      ch = buf[n];
-      switch ( ch ) {
-        case '\n':
-          // Dos/Unix line termination
-          m_aLines.Add(str);
-          m_aTypes.Add(chLast == '\r' ? Type_Dos : Type_Unix);
-          str.Empty();
-          chLast = '\n';
-          break;
-
-        case '\r':
-          if ( chLast == '\r' ) {
-            // Mac empty line
-            m_aLines.Add("");
-            m_aTypes.Add(Type_Mac);
-          }
-          else
-            chLast = '\r';
-          break;
+    const wxString str(buf, conv, bufPos);

 
 

-        default:
-          if ( chLast == '\r' ) {
-            // Mac line termination
-            m_aLines.Add(str);
-            m_aTypes.Add(Type_Mac);
-            str = ch;
-          }
-          else {
-            // add to the current line
-            str += ch;
-          }
-      }
+    // this doesn't risk to happen in ANSI build
+#if wxUSE_UNICODE
+    if ( bufSize > 4 && str.empty() )
+    {
+        wxLogError(_("Failed to convert file contents to Unicode."));
+        return false;
+    }
+#endif // wxUSE_UNICODE
+
+    free(buf.release()); // we don't need this memory any more
+
+
+    // now break the buffer in lines
+
+    // last processed character, we need to know if it was a CR or not
+    wxChar chLast = '\0';
+
+    // the beginning of the current line, changes inside the loop
+    wxString::const_iterator lineStart = str.begin();
+    const wxString::const_iterator end = str.end();
+    for ( wxString::const_iterator p = lineStart; p != end; p++ )
+    {
+        const wxChar ch = *p;
+        switch ( ch )
+        {
+            case '\n':
+                // could be a DOS or Unix EOL
+                if ( chLast == '\r' )
+                {
+                    AddLine(wxString(lineStart, p - 1), wxTextFileType_Dos);
+                }
+                else // bare '\n', Unix style
+                {
+                    AddLine(wxString(lineStart, p), wxTextFileType_Unix);
+                }
+
+                lineStart = p + 1;
+                break;
+
+            case '\r':
+                if ( chLast == '\r' )
+                {
+                    // Mac empty line
+                    AddLine(wxEmptyString, wxTextFileType_Mac);
+                    lineStart = p + 1;
+                }
+                //else: we don't know what this is yet -- could be a Mac EOL or
+                //      start of DOS EOL so wait for next char
+                break;
+
+            default:
+                if ( chLast == '\r' )
+                {
+                    // Mac line termination
+                    AddLine(wxString(lineStart, p - 1), wxTextFileType_Mac);
+                    lineStart = p;
+                }
+        }
+
+        chLast = ch;

     }
     }

-  }

 
 

-  // anything in the last line?
-  if ( !str.IsEmpty() ) {
-    m_aTypes.Add(Type_None);  // no line terminator
-    m_aLines.Add(str);
-  }
+    // anything in the last line?
+    if ( lineStart != end )
+    {
+        // add unterminated last line
+        AddLine(wxString(lineStart, end), wxTextFileType_None);
+    }

 
 

-  return TRUE;
+    return true;

 }
 
 }
 

-bool wxTextFile::Write(Type typeNew)
+
+bool wxTextFile::OnWrite(wxTextFileType typeNew, const wxMBConv& conv)

 {
 {

-  wxTempFile fileTmp(m_strFile);
+    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);

 
 

-  if ( !fileTmp.IsOpened() ) {
-    wxLogError(_("can't write file '%s' to disk."), m_strFile.c_str());
-    return FALSE;
-  }
+    wxTempFile fileTmp(fn.GetFullPath());

 
 

-  uint nCount = m_aLines.Count();
-  for ( uint n = 0; n < nCount; n++ ) {
-    fileTmp.Write(m_aLines[n] +
-                  GetEOL(typeNew == Type_None ? m_aTypes[n] : typeNew));
-  }
+    if ( !fileTmp.IsOpened() ) {
+        wxLogError(_("can't write buffer '%s' to disk."), m_strBufferName.c_str());
+        return false;
+    }
+
+    size_t nCount = GetLineCount();
+    for ( size_t n = 0; n < nCount; n++ ) {
+        fileTmp.Write(GetLine(n) +
+                      GetEOL(typeNew == wxTextFileType_None ? GetLineType(n)
+                                                            : typeNew),
+                      conv);
+    }

 
 

-  // replace the old file with this one
-  return fileTmp.Commit();
+    // replace the old file with this one
+    return fileTmp.Commit();

 }
 }

+
+#endif // wxUSE_TEXTFILE