src/support/path.h

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