src/support/tempname.C

   1 #include <config.h>
   2
   3 #include <cstdlib>
   4 #include <unistd.h>
   5
   6 #include "LString.h"
   7 #include "support/lyxlib.h"
   8 #include "support/filetools.h"
   9 #include "debug.h"
  10
  11 using std::endl;
  12
  13 extern string system_tempdir;
  14
  15 string const lyx::tempName(string const & dir, string const & mask)
  16 {
  17         string const tmpdir(dir.empty() ? system_tempdir : dir);
  18         string tmpfl(AddName(tmpdir, mask));
  19         tmpfl += tostr(getpid());
  20         tmpfl += "XXXXXX";
  21
  22         // The supposedly safe mkstemp version
  23         char * tmpl = new char[tmpfl.length() + 1]; // + 1 for '\0'
  24         tmpfl.copy(tmpl, string::npos);
  25         tmpl[tmpfl.length()] = '\0'; // terminator
  26
  27         int const tmpf = ::mkstemp(tmpl);
  28         if (tmpf != -1) {
  29                 string const t(tmpl);
  30                 ::close(tmpf);
  31                 delete [] tmpl;
  32                 lyxerr[Debug::FILES] << "Temporary file `" << t
  33                                      << "' created." << endl;
  34                 return t;
  35         } else {
  36                 lyxerr[Debug::FILES]
  37                         << "LyX Error: Unable to create temporary file."
  38                         << endl;
  39                 delete [] tmpl;
  40                 return string();
  41         }
  42 }