// Created: 03.04.98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
// headers
// ============================================================================
-#ifdef __GNUG__
- #pragma implementation "textfile.h"
-#endif
-
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#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
bool wxTextFile::OnOpen(const wxString &strBufferName, wxTextBufferOpenMode OpenMode)
{
- wxFile::OpenMode FileOpenMode = wxFile::read;
-
- switch (OpenMode)
- {
+ wxFile::OpenMode FileOpenMode;
+
+ switch ( OpenMode )
+ {
+ default:
+ wxFAIL_MSG( _T("unknown open mode in wxTextFile::Open") );
+ // fall through
+
case ReadAccess :
FileOpenMode = wxFile::read;
break;
+
case WriteAccess :
FileOpenMode = wxFile::write;
break;
- default :
- wxASSERT(0); // Should not happen.
- break;
- }
+ }
return m_file.Open(strBufferName.c_str(), FileOpenMode);
}
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 );
+ // file should be opened and we must be in it's beginning
+ wxASSERT( m_file.IsOpened() &&
+ (m_file.GetKind() != wxFILE_KIND_DISK || m_file.Tell() == 0) );
+ static const size_t BUF_SIZE = 1024;
#if wxUSE_UNICODE
- char conv_mbBuf[2];
- wchar_t conv_wcBuf[2];
- conv_mbBuf[1] = 0;
+ static const size_t NUL_SIZE = 4;
#else
- (void)conv;
+ static const size_t NUL_SIZE = 1;
#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;
- }
+ char buf[BUF_SIZE + NUL_SIZE];
+ wxChar chLast = '\0';
+ wxString str;
- 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;
+ for ( ;; )
+ {
+ // leave space for trailing NUL
+ ssize_t nRead = m_file.Read(buf, BUF_SIZE);
+
+ if ( nRead == wxInvalidOffset )
+ {
+ // read error (error message already given in wxFile::Read)
+ return false;
+ }
+
+ if ( nRead == 0 )
+ 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
- }
- }
+ // we have to properly NUL-terminate the string for any encoding it may
+ // use -- 4 NULs should be enough for everyone (this is why we add 4
+ // extra bytes to the buffer)
+ buf[nRead] =
+ buf[nRead + 1] =
+ buf[nRead + 2] =
+ buf[nRead + 3] = '\0';
+
+ // append to the remains of the last block, don't overwrite
+ wxString strbuf(buf, conv);
+ if ( strbuf.empty() )
+ {
+ // conversion failed
+ return false;
+ }
+
+ str += strbuf;
+#else // ANSI
+ wxUnusedVar(conv);
+ buf[nRead] = '\0';
+ str += buf;
+#endif // wxUSE_UNICODE/!wxUSE_UNICODE
+
+
+ // 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 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;
+ }
+
+ // remove the part we already processed
+ str.erase(0, lineStart - str.begin());
}
- } while ( nRead == WXSIZEOF(buf) );
- // anything in the last line?
- if ( !str.IsEmpty() ) {
- AddLine(str, wxTextFileType_None); // no line terminator
- }
+ // anything in the last line?
+ if ( !str.empty() )
+ {
+ AddLine(str, wxTextFileType_None); // no line terminator
+ }
- return TRUE;
+ 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());
- return FALSE;
+ return false;
}
size_t nCount = GetLineCount();
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