IsModified() function now works correctly

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

diff --git a/src/common/file.cpp b/src/common/file.cpp
index 9011987266cddbd02b31c31203af830bf85230bf..f2f047c3453a3c2428dcc42368908e77eddc4aca 100644 (file)
--- a/src/common/file.cpp
+++ b/src/common/file.cpp
@@ -27,8 +27,30 @@
 #endif
 
 // standard
-#if    defined(__WINDOWS__) && !defined(__GNUWIN32__)
+#if    defined(__WXMSW__) && !defined(__GNUWIN32__)
   #include  <io.h>
+
+  #define   WIN32_LEAN_AND_MEAN
+  #define   NOSERVICE
+  #define   NOIME
+  #define   NOATOM
+  #define   NOGDI
+  #define   NOGDICAPMASKS
+  #define   NOMETAFILE
+  #define   NOMINMAX
+  #define   NOMSG
+  #define   NOOPENFILE
+  #define   NORASTEROPS
+  #define   NOSCROLL
+  #define   NOSOUND
+  #define   NOSYSMETRICS
+  #define   NOTEXTMETRIC
+  #define   NOWH
+  #define   NOCOMM
+  #define   NOKANJI
+  #define   NOCRYPT
+  #define   NOMCX
+  #include  <windows.h>     // for GetTempFileName
 #elif (defined(__UNIX__) || defined(__GNUWIN32__))
   #include  <unistd.h>
 #else
@@ -105,6 +127,7 @@ bool wxFile::Exists(const char *sz)
 wxFile::wxFile(const char *szFileName, OpenMode mode)
 {
   m_fd = fd_invalid;
+  m_error = FALSE;
 
   Open(szFileName, mode);
 }
@@ -123,7 +146,7 @@ bool wxFile::Create(const char *szFileName, bool bOverwrite)
   int fd = open(szFileName, O_CREAT | (bOverwrite ? O_TRUNC : O_EXCL));
 
   if ( fd == -1 ) {
-    wxLogSysError("can't create file '%s'", szFileName);
+    wxLogSysError(_("can't create file '%s'"), szFileName);
     return FALSE;
   }
   else {
@@ -158,7 +181,7 @@ bool wxFile::Open(const char *szFileName, OpenMode mode)
   int fd = open(szFileName, flags, S_IREAD | S_IWRITE);
 
   if ( fd == -1 ) {
-    wxLogSysError("can't open file '%s'", szFileName);
+    wxLogSysError(_("can't open file '%s'"), szFileName);
     return FALSE;
   }
   else {
@@ -172,7 +195,7 @@ bool wxFile::Close()
 {
   if ( IsOpened() ) {
     if ( close(m_fd) == -1 ) {
-      wxLogSysError("can't close file descriptor %d", m_fd);
+      wxLogSysError(_("can't close file descriptor %d"), m_fd);
       m_fd = fd_invalid;
       return FALSE;
     }
@@ -190,11 +213,11 @@ bool wxFile::Close()
 // read
 off_t wxFile::Read(void *pBuf, off_t nCount)
 {
-  wxCHECK_RET( (pBuf != NULL) && IsOpened(), 0 );
+  wxCHECK( (pBuf != NULL) && IsOpened(), 0 );
 
   int iRc = ::read(m_fd, pBuf, nCount);
   if ( iRc == -1 ) {
-    wxLogSysError("can't read from file descriptor %d", m_fd);
+    wxLogSysError(_("can't read from file descriptor %d"), m_fd);
     return ofsInvalid;
   }
   else
@@ -202,27 +225,28 @@ off_t wxFile::Read(void *pBuf, off_t nCount)
 }
 
 // write
-bool wxFile::Write(const void *pBuf, uint nCount)
+uint wxFile::Write(const void *pBuf, uint nCount)
 {
-  wxCHECK_RET( (pBuf != NULL) && IsOpened(), 0 );
+  wxCHECK( (pBuf != NULL) && IsOpened(), 0 );
 
   int iRc = ::write(m_fd, pBuf, nCount);
   if ( iRc == -1 ) {
-    wxLogSysError("can't write to file descriptor %d", m_fd);
-    return FALSE;
+    wxLogSysError(_("can't write to file descriptor %d"), m_fd);
+    m_error = TRUE;
+    return 0;
   }
   else
-    return TRUE;
+    return (uint)iRc;
 }
 
 // flush
 bool wxFile::Flush()
 {
   if ( IsOpened() ) {
-               // @@@ fsync() is not ANSI (BSDish)
+// @@@ fsync() is not ANSI (BSDish)
 //    if ( fsync(m_fd) == -1 ) { // TODO
       if (TRUE) {
-      wxLogSysError("can't flush file descriptor %d", m_fd);
+      wxLogSysError(_("can't flush file descriptor %d"), m_fd);
       return FALSE;
     }
   }
@@ -235,21 +259,21 @@ bool wxFile::Flush()
 // ----------------------------------------------------------------------------
 
 // seek
-off_t wxFile::Seek(off_t ofs, SeekMode mode)
+off_t wxFile::Seek(off_t ofs, wxSeekMode mode)
 {
   wxASSERT( IsOpened() );
 
   int flag = -1;
   switch ( mode ) {
-    case FromStart:
+    case wxFromStart:
       flag = SEEK_SET;
       break;
 
-    case FromCurrent:
+    case wxFromCurrent:
       flag = SEEK_CUR;
       break;
 
-    case FromEnd:
+    case wxFromEnd:
       flag = SEEK_END;
       break;
 
@@ -259,7 +283,7 @@ off_t wxFile::Seek(off_t ofs, SeekMode mode)
 
   int iRc = lseek(m_fd, ofs, flag);
   if ( iRc == -1 ) {
-    wxLogSysError("can't seek on file descriptor %d", m_fd);
+    wxLogSysError(_("can't seek on file descriptor %d"), m_fd);
     return ofsInvalid;
   }
   else
@@ -273,7 +297,7 @@ off_t wxFile::Tell() const
 
   int iRc = tell(m_fd);
   if ( iRc == -1 ) {
-    wxLogSysError("can't get seek position on file descriptor %d", m_fd);
+    wxLogSysError(_("can't get seek position on file descriptor %d"), m_fd);
     return ofsInvalid;
   }
   else
@@ -306,7 +330,7 @@ off_t wxFile::Length() const
   #endif  //_MSC_VER
 
   if ( iRc == -1 ) {
-    wxLogSysError("can't find length of file on file descriptor %d", m_fd);
+    wxLogSysError(_("can't find length of file on file descriptor %d"), m_fd);
     return ofsInvalid;
   }
   else
@@ -340,8 +364,8 @@ bool wxFile::Eof() const
       return FALSE;
 
     case -1:
-      wxLogSysError("can't determine if the end of file is reached on "
-                    "descriptor %d", m_fd);
+      wxLogSysError(_("can't determine if the end of file is reached on "
+                      "descriptor %d"), m_fd);
       break;
 
     default:
@@ -366,7 +390,25 @@ wxTempFile::wxTempFile(const wxString& strName)
 bool wxTempFile::Open(const wxString& strName)
 {
   m_strName = strName;
-  m_strTemp = tmpnam(NULL);
+  
+  // we want to create the file in the same directory as strName because
+  // otherwise rename() in Commit() might not work (if the files are on
+  // different partitions for example). Unfortunately, the only standard
+  // (POSIX) temp file creation function tmpnam() can't do it.
+  #ifdef  __UNIX__
+    static const char *szMktempSuffix = "XXXXXX";
+    m_strTemp << strName << szMktempSuffix;
+    mktemp((char *)m_strTemp.c_str()); // will do because length doesn't change
+  #else // Windows
+    wxString strPath;
+    wxSplitPath(strName, &strPath, NULL, NULL);
+    if ( strPath.IsEmpty() )
+      strPath = '.';  // GetTempFileName will fail if we give it empty string
+    if ( !GetTempFileName(strPath, "wx_",0, m_strTemp.GetWriteBuf(MAX_PATH)) )
+      wxLogLastError("GetTempFileName");
+    m_strTemp.UngetWriteBuf();
+  #endif  // Windows/Unix
+    
   return m_file.Open(m_strTemp, wxFile::write);
 }
 
@@ -385,12 +427,12 @@ bool wxTempFile::Commit()
   m_file.Close();
 
   if ( wxFile::Exists(m_strName) && remove(m_strName) != 0 ) {
-    wxLogSysError("can't remove file '%s'", m_strName.c_str());
+    wxLogSysError(_("can't remove file '%s'"), m_strName.c_str());
     return FALSE;
   }
 
   if ( rename(m_strTemp, m_strName) != 0 ) {
-    wxLogSysError("can't commit changes to file '%s'", m_strName.c_str());
+    wxLogSysError(_("can't commit changes to file '%s'"), m_strName.c_str());
     return FALSE;
   }
 
@@ -401,5 +443,5 @@ void wxTempFile::Discard()
 {
   m_file.Close();
   if ( remove(m_strTemp) != 0 )
-    wxLogSysError("can't remove temporary file '%s'", m_strTemp.c_str());
+    wxLogSysError(_("can't remove temporary file '%s'"), m_strTemp.c_str());
 }