lyx_mirror/src/support/tempname.C

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/**
* \file tempname.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bj<EFBFBD>nnes
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "support/lyxlib.h"
#include "support/convert.h"
#include "support/filetools.h"
#include "support/package.h"
#include "debug.h"
#include <boost/scoped_array.hpp>
#include <cstdlib>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#if !defined(HAVE_MKSTEMP) && defined(HAVE_MKTEMP)
# include <fcntl.h>
# ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
# endif
# ifdef HAVE_IO_H
# include <io.h>
# endif
# ifdef HAVE_PROCESS_H
# include <process.h>
# endif
#endif
using boost::scoped_array;
using std::string;
using std::endl;
namespace {
inline
int make_tempfile(char * templ)
{
#if defined(HAVE_MKSTEMP)
return ::mkstemp(templ);
#elif defined(HAVE_MKTEMP)
// This probably just barely works...
::mktemp(templ);
# if defined (HAVE_OPEN)
return ::open(templ, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
# elif defined (HAVE__OPEN)
return ::_open(templ,
_O_RDWR | _O_CREAT | _O_EXCL,
_S_IREAD | _S_IWRITE);
# else
# error No open() function.
# endif
#else
#error FIX FIX FIX
#endif
}
} // namespace anon
string const lyx::support::tempName(string const & dir, string const & mask)
{
string const tmpdir(dir.empty() ? package().temp_dir() : dir);
string tmpfl(addName(tmpdir, mask));
#if defined (HAVE_GETPID)
tmpfl += convert<string>(getpid());
#elif defined (HAVE__GETPID)
tmpfl += convert<string>(_getpid());
#else
# error No getpid() function
#endif
tmpfl += "XXXXXX";
// The supposedly safe mkstemp version
scoped_array<char> tmpl(new char[tmpfl.length() + 1]); // + 1 for '\0'
tmpfl.copy(tmpl.get(), string::npos);
tmpl[tmpfl.length()] = '\0'; // terminator
int const tmpf = make_tempfile(tmpl.get());
if (tmpf != -1) {
string const t(tmpl.get());
#if defined (HAVE_CLOSE)
::close(tmpf);
#elif defined (HAVE__CLOSE)
::_close(tmpf);
#else
# error No close() function.
#endif
lyxerr[Debug::FILES] << "Temporary file `" << t
<< "' created." << endl;
return t;
} else {
lyxerr[Debug::FILES]
<< "LyX Error: Unable to create temporary file."
<< endl;
return string();
}
}