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