src/support/path.h

   1 // -*- C++ -*-
   2 #ifndef PATH_H
   3 #define PATH_H
   4
   5 #include "LString.h"
   6 //#include "filetools.h"
   7 #include "lyxlib.h"
   8 #include <boost/utility.hpp>
   9
  10 #ifdef __GNUG__
  11 #pragma interface
  12 #endif
  13
  14 ///
  15 class Path : boost::noncopyable {
  16 public:
  17         ///
  18         explicit
  19         Path(string const & path)
  20                 : popped_(false)
  21         {
  22                 if (!path.empty()) {
  23                         pushedDir_ = lyx::getcwd(); // GetCWD();
  24                         if (pushedDir_.empty() || lyx::chdir(path)) {
  25                                 // should throw an exception
  26                                 // throw DirChangeError();
  27                                 // The use of Alert::err_alert makes this
  28                                 // impossible to inline.
  29                                 //Alert::err_alert(_("Error: Could not change to directory: "),
  30                                 //           path);
  31                         }
  32                 } else {
  33                         popped_ = true;
  34                 }
  35         }
  36         ///
  37         ~Path()
  38         {
  39                 if (!popped_) pop();
  40         }
  41         ///
  42         int pop();
  43 private:
  44         ///
  45         bool popped_;
  46         ///
  47         string pushedDir_;
  48 };
  49
  50 // To avoid the wrong usage:
  51 // Path("/tmp");   // wrong
  52 // Path p("/tmp");  // right
  53 // we add this macro:
  54 ///
  55 #define Path(x) unnamed_Path;
  56 // Tip gotten from Bobby Schmidt's column in C/C++ Users Journal
  57
  58 #endif