oracular (3) libtmpfile.3.gz

NAME

       pm_tmpfile() - create a temporary unnamed file

SYNOPSIS

       #include <netpbm/pm.h>

       FILE *
       pm_tmpfile(void);

EXAMPLE

       This  simple  example  creates  a  temporary file, writes "hello world" to it, then reads back and prints
       those contents.

       #include <netpbm/pm.h>

       FILE * myfileP;

       myfile = pm_tmpfile();

       fprintf(myfile, "hello world\n");

       fseek(myfileP, 0, SEEK_SET);

       fread(buffer, sizeof(buffer), 1, myfileP);

       fprintf(STDOUT, "temp file contains '%s'\n", buffer);

       fclose(myfileP);

DESCRIPTION

       This library function is part of Netpbm(1).

       pm_tmpfile() creates and opens an unnamed temporary file.  It is basically the same thing as the standard
       C  library  tmpfile()  function,  except that it uses the TMPFILE environment variable to decide where to
       create the temporary file.  If TMPFILE is not set or is set  to  something  unusable  (e.g.   too  long),
       pm_tmpfile() falls back to the value of the standard C library symbol P_tmpdir, just like tmpfile().

       Unlike  tmpfile(),  pm_tmpfile()  never returns NULL.  If it fails, it issues a message to Standard Error
       and aborts the program, like most libnetpbm routines do.

       If you need to refer to the temporary file by name, use pm_make_tmpfile() instead.

HISTORY

       pm_tmpfile() was introduced in Netpbm 10.20 (January 2004).

DOCUMENT SOURCE

       This manual page was generated by the Netpbm tool 'makeman' from HTML source.  The  master  documentation
       is at

              http://netpbm.sourceforge.net/doc/libtmpfile.html

netpbm documentation                              22 July 200Netpbm subroutine library: pm_tmpfile() function(3)