bool
wxMSWFileSystemWatcher::AddTree(const wxFileName& path,
int events,
const wxString& filter)
{
if ( !filter.empty() )
{
// Use the inefficient generic version as we can only monitor
// everything under the given directory.
//
// Notice that it would probably be better to still monitor everything
// natively and filter out the changes we're not interested in.
return wxFileSystemWatcherBase::AddTree(path, events, filter);
}
if ( !path.DirExists() )
{
wxLogError(_("Can't monitor non-existent directory \"%s\" for changes."),
path.GetFullPath());
return false;
}
return AddAny(path, events, wxFSWPath_Tree);
}
bool wxFileSystemWatcherBase::AddTree(const wxFileName& path, int events,
const wxString& filespec)
{
if (!path.DirExists())
return false;
// OPT could be optimised if we stored information about relationships
// between paths
class AddTraverser : public wxDirTraverser
{
public:
AddTraverser(wxFileSystemWatcherBase* watcher, int events,
const wxString& filespec) :
m_watcher(watcher), m_events(events), m_filespec(filespec)
{
}
virtual wxDirTraverseResult OnFile(const wxString& WXUNUSED(filename))
{
// There is no need to watch individual files as we watch the
// parent directory which will notify us about any changes in them.
return wxDIR_CONTINUE;
}
virtual wxDirTraverseResult OnDir(const wxString& dirname)
{
if ( m_watcher->AddAny(wxFileName::DirName(dirname),
m_events, wxFSWPath_Tree, m_filespec) )
{
wxLogTrace(wxTRACE_FSWATCHER,
"--- AddTree adding directory '%s' ---", dirname);
}
return wxDIR_CONTINUE;
}
private:
wxFileSystemWatcherBase* m_watcher;
int m_events;
wxString m_filespec;
};
wxDir dir(path.GetFullPath());
// Prevent asserts or infinite loops in trees containing symlinks
int flags = wxDIR_DIRS;
if ( !path.ShouldFollowLink() )
{
flags |= wxDIR_NO_FOLLOW;
}
AddTraverser traverser(this, events, filespec);
dir.Traverse(traverser, filespec, flags);
// Add the path itself explicitly as Traverse() doesn't return it.
AddAny(path.GetPathWithSep(), events, wxFSWPath_Tree, filespec);
return true;
}
bool wxFileSystemWatcherBase::Add(const wxFileName& path, int events)
{
wxFSWPathType type = wxFSWPath_None;
if ( path.FileExists() )
{
type = wxFSWPath_File;
}
else if ( path.DirExists() )
{
type = wxFSWPath_Dir;
}
else
{
wxLogError(_("Can't monitor non-existent path \"%s\" for changes."),
path.GetFullPath());
return false;
}
return AddAny(path, events, type);
}
bool wxFileSystemWatcherBase::Add(const wxFileName& path, int events)
{
wxFSWPathType type = wxFSWPath_None;
if ( path.FileExists() )
{
type = wxFSWPath_File;
}
else if ( path.DirExists() )
{
type = wxFSWPath_Dir;
}
else
{
// Don't overreact to being passed a non-existent item. It may have
// only just been deleted, in which case doing nothing is correct
wxLogTrace(wxTRACE_FSWATCHER,
"Can't monitor non-existent path \"%s\" for changes.",
path.GetFullPath());
return false;
}
return AddAny(path, events, type);
}
