#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include "posix.h"
#include "lib.h"
#include "errarg.h"
#include "error.h"
extern "C" {
char *mktemp(char *);
int mkstemp(char *);
}
#define GROFF_TMPDIR_ENVVAR "GROFF_TMPDIR"
#define TMPDIR_ENVVAR "TMPDIR"
#define DEFAULT_TMPDIR "/tmp"
#define TMPFILE_PREFIX "groff"
FILE *xtmpfile()
{
const char *dir = getenv(GROFF_TMPDIR_ENVVAR);
if (!dir) {
dir = getenv(TMPDIR_ENVVAR);
if (!dir)
dir = DEFAULT_TMPDIR;
}
const char *p = strrchr(dir, '/');
int needs_slash = (!p || p[1]);
char *templ = new char[strlen(dir) + needs_slash
+ sizeof(TMPFILE_PREFIX) - 1 + 6 + 1];
strcpy(templ, dir);
if (needs_slash)
strcat(templ, "/");
strcat(templ, TMPFILE_PREFIX);
strcat(templ, "XXXXXX");
#ifdef HAVE_MKSTEMP
errno = 0;
int fd = mkstemp(templ);
if (fd < 0)
fatal("cannot create temporary file: %1", strerror(errno));
errno = 0;
FILE *fp = fdopen(fd, "w+");
if (!fp)
fatal("fdopen: %1", strerror(errno));
#else
if (!mktemp(templ) || !templ[0])
fatal("cannot create file name for temporary file");
errno = 0;
FILE *fp = fopen(templ, "w+");
if (!fp)
fatal("cannot open `%1': %2", templ, strerror(errno));
#endif
if (unlink(templ) < 0)
error("cannot unlink `%1': %2", templ, strerror(errno));
a_delete templ;
return fp;
}
#if 0
FILE *xtmpfile()
{
FILE *fp = tmpfile();
if (!fp)
fatal("couldn't create temporary file");
return fp;
}
#endif