todo.cc

   1 #include "todo.h"
   2 #include "frame.h"
   3 #include <unistd.h>
   4
   5 //----------------------------------------------------------------------
   6
   7 /// Default constructor.
   8 CTodoApp::CTodoApp (void)
   9 : CApplication (),
  10   m_Doc (),
  11   m_Curlist ()
  12 {
  13 }
  14
  15 /// Singleton interface.
  16 /*static*/ CTodoApp& CTodoApp::Instance (void)
  17 {
  18     static CTodoApp s_App;
  19     return (s_App);
  20 }
  21
  22 /// Set \p filename to a default value to be used when none is given on the cmdline.
  23 void CTodoApp::GetDefaultFilename (string& filename) const
  24 {
  25     filename.clear();
  26     //
  27     // This code gets the first available .todo in the current path.
  28     //  That is, it will use ./.todo, or ../.todo, etc.
  29     //
  30     // Get the nesting level to know how far back to check.
  31     char cwd [PATH_MAX];
  32     if (!getcwd (VectorBlock (cwd)))
  33         throw libc_exception ("getcwd");
  34     const size_t nDirs = count (cwd, cwd + strlen(cwd), '/');
  35     assert (nDirs && "A path without root in it?");
  36
  37     // Check for existing .todo in each directory.
  38     filename.reserve (strlen("../") * nDirs + strlen(".todo"));
  39     int i;
  40     for (i = 0; i < int(nDirs); ++i)
  41         filename += "../";
  42     filename += ".todo";
  43     for (; i >= 0; --i)
  44         if (access (filename.iat (i * strlen("../")), F_OK) == 0)
  45             break;
  46
  47     // If there are no .todo files, create ./.todo
  48     if (i < 0) {
  49         i = nDirs - 1;
  50         if (access (".", W_OK) != 0) {
  51             MessageBox ("You are not allowed to write to this directory");
  52             CRootWindow::Instance().Close();
  53         }
  54     }
  55     filename.erase (filename.begin(), i * strlen("../"));
  56 }
  57
  58 /// Initializes the output device.
  59 void CTodoApp::OnCreate (argc_t argc, argv_t argv)
  60 {
  61     CApplication::OnCreate (argc, argv);
  62     if (argc > 2) {
  63         cerr << "Usage: todo [filename]\n";
  64         return (CRootWindow::Instance().Close());
  65     }
  66
  67     // Determine database name.
  68     string fullname;
  69     if (argc == 2)
  70         fullname = argv[1];
  71     else
  72         GetDefaultFilename (fullname);
  73
  74     // Create the frame and register the document with it.
  75     CTodoFrame* pFrame = new CTodoFrame;
  76     CRootWindow::Instance().AddChild (pFrame);
  77     m_Doc.RegisterView (&m_Curlist);
  78     m_Curlist.RegisterView (pFrame);
  79
  80     // Open the document.
  81     try {
  82         m_Doc.Open (fullname);
  83     } catch (...) {
  84         string msg (fullname);
  85         msg += " is corrupt or in an incompatible format.";
  86         MessageBox (msg);
  87         CRootWindow::Instance().Close();
  88         #ifndef NDEBUG
  89             throw; // to see the real error for debugging.
  90         #endif
  91     }
  92 }
  93
  94 //----------------------------------------------------------------------
  95
  96 WinMain (CTodoApp)
  97
  98 //----------------------------------------------------------------------
  99