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