include/wx/unix/private/fswatcher_kqueue.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/unix/private/fswatcher_kqueue.h
   3 // Purpose:     File system watcher impl classes
   4 // Author:      Bartosz Bekier
   5 // Created:     2009-05-26
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2009 Bartosz Bekier <bartosz.bekier@gmail.com>
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef WX_UNIX_PRIVATE_FSWATCHER_KQUEUE_H_
  12 #define WX_UNIX_PRIVATE_FSWATCHER_KQUEUE_H_
  13
  14 #include <fcntl.h>
  15 #include <unistd.h>
  16 #include "wx/dir.h"
  17 #include "wx/debug.h"
  18 #include "wx/arrstr.h"
  19
  20 // ============================================================================
  21 // wxFSWatcherEntry implementation & helper declarations
  22 // ============================================================================
  23
  24 class wxFSWatcherImplKqueue;
  25
  26 class wxFSWatchEntryKq : public wxFSWatchInfo
  27 {
  28 public:
  29     struct wxDirState
  30     {
  31         wxDirState(const wxFSWatchInfo& winfo)
  32         {
  33             if (!wxDir::Exists(winfo.GetPath()))
  34                 return;
  35
  36             wxDir dir(winfo.GetPath());
  37             wxCHECK_RET( dir.IsOpened(),
  38                   wxString::Format("Unable to open dir '%s'", winfo.GetPath()));
  39
  40             wxString filename;
  41             bool ret = dir.GetFirst(&filename);
  42             while (ret)
  43             {
  44                 files.push_back(filename);
  45                 ret = dir.GetNext(&filename);
  46             }
  47         }
  48
  49         wxSortedArrayString files;
  50     };
  51
  52     wxFSWatchEntryKq(const wxFSWatchInfo& winfo) :
  53         wxFSWatchInfo(winfo), m_lastState(winfo)
  54     {
  55         m_fd = wxOpen(m_path, O_RDONLY, 0);
  56         if (m_fd == -1)
  57         {
  58             wxLogSysError(_("Unable to open path '%s'"), m_path);
  59         }
  60     }
  61
  62     virtual ~wxFSWatchEntryKq()
  63     {
  64         (void) Close();
  65     }
  66
  67     bool Close()
  68     {
  69         if (!IsOk())
  70             return false;
  71
  72         int ret = close(m_fd);
  73         if (ret == -1)
  74         {
  75             wxLogSysError(_("Unable to close path '%s'"), m_path);
  76         }
  77         m_fd = -1;
  78
  79         return ret != -1;
  80     }
  81
  82     bool IsOk() const
  83     {
  84         return m_fd != -1;
  85     }
  86
  87     int GetFileDescriptor() const
  88     {
  89         return m_fd;
  90     }
  91
  92     void RefreshState()
  93     {
  94         m_lastState = wxDirState(*this);
  95     }
  96
  97     const wxDirState& GetLastState() const
  98     {
  99         return m_lastState;
 100     }
 101
 102 private:
 103     int m_fd;
 104     wxDirState m_lastState;
 105
 106     wxDECLARE_NO_COPY_CLASS(wxFSWatchEntryKq);
 107 };
 108
 109 #endif /* WX_UNIX_PRIVATE_FSWATCHER_KQUEUE_H_ */