HWND CEditView::StartProgress()
{
HWND hwndProgress = m_pcEditWnd->m_cStatusBar.GetProgressHwnd();
if( NULL != hwndProgress ){
::ShowWindow( hwndProgress, SW_SHOW );
Progress_SetRange( hwndProgress, 0, 101 );
Progress_SetPos( hwndProgress, 0 );
}
return hwndProgress;
}
bool downloadUpdates( const char* downloadWebsite, const std::list<EvidyonUpdateFile>& filesAndSizes )
{
// Hide the combo box, show the progress bar
ComboBox_Enable( getDisplayModeCombo(), FALSE );
ShowWindow( getProgressBar(), SW_SHOWDEFAULT );
std::vector<std::pair<std::string,std::string>> tempFilesToLocalFiles;
// Initialize the progress bar. All files are scaled to 65535 since the 32-bit range
// doesn't seem to be working correctly.
Progress_SetRange( getProgressBar(), 0, 65535 );
// Repeat for each of the files
for (std::list<EvidyonUpdateFile>::const_iterator p = filesAndSizes.begin(); p != filesAndSizes.end(); ++p)
{
// Update the display window
{
// Get the number of bytes
char bytes[16];
if( p->file_size > 1000 )
{
sprintf_s( bytes, "%lu KB", p->file_size / 1000 );
} else if( p->file_size > 1000000 )
{
sprintf_s( bytes, "%lu MB", p->file_size / 1000000 );
} else
{
sprintf_s( bytes, "%lu bytes", p->file_size );
}
std::string text = "Downloading ";
text.append( p->file_name );
text.append( " - " );
text.append( bytes );
appendStatusLine( text.c_str() );
}
// Get the file's name on the website
std::string fileUrl = downloadWebsite;
fileUrl.append( p->file_name );
// Get the file's local name
std::string fileLocalName = "~";
fileLocalName.append( p->file_name );
// Open the local file
HANDLE hDestination;
hDestination = CreateFile( fileLocalName.c_str(),
GENERIC_WRITE,
FILE_SHARE_READ,
NULL,
CREATE_ALWAYS,
FILE_FLAG_WRITE_THROUGH |
FILE_FLAG_SEQUENTIAL_SCAN,
NULL );
CONFIRM( hDestination ) else return false;
// Add to the list of local files
tempFilesToLocalFiles.push_back( std::pair<std::string,std::string>( fileLocalName, p->file_name ) );
// Download this file
dcx::dcxWin32InternetStream reader;
if( !reader.open( "EvidyonClient", fileUrl.c_str() ) )
{
CloseHandle( hDestination );
return false;
}
// Reset the progress bar
Progress_SetPos( getProgressBar(), 0 );
char buffer[512];
size_t bytesRead = 0;
size_t bytes;
while( reader.scan( buffer, sizeof(buffer), &bytes ) && !reader.end() )
{
// Write this data into the output file
DWORD bytesWritten;
BOOL success = WriteFile( hDestination,
buffer,
bytes,
&bytesWritten,
NULL );
// Exit if the data couldn't be written or the user exited the launcher
if( !dcx::dcxWin32StdMessagePump( myMainWindow ) ||
APP_WARNING( !success || !bytesWritten )( "Couldn't write data to temporary file" ) )
break;
// Add to the number of bytes that were read
bytesRead += bytes;
// Update the progress bar
Progress_SetPos( getProgressBar(), (WORD)(((double)bytesRead / (double)p->file_size) * 65535) );
}
bool completed = reader.end();
// Get rid of the output file and internet connection
reader.close();
CloseHandle( hDestination );
// If we didn't finish the download, fail
if( APP_ERROR( !completed )( "Didn't complete download of %s", fileUrl.c_str() ) )
return false;
}
// Delete original files and copy files over
for( std::vector<std::pair<std::string,std::string>>::iterator i = tempFilesToLocalFiles.begin();
i != tempFilesToLocalFiles.end(); ++i )
{
// Copy over the existing file
if (CopyFile( i->first.c_str(), i->second.c_str(), FALSE )) {
// Erase the temporary file
DeleteFile( i->first.c_str() );
}
}
// Max out the bar
Progress_SetPos( getProgressBar(), 65535 );
// Success
return true;
}