pm_tmpfile()
Updated: 22 July 2004
NAMEpm_tmpfile() ‐ tempfile creation routine using TMPFILE
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 * myfile;
myfile = pm_tmpfile();
fprintf(myfile, "hello world0);
fseek(myfile, 0, SEEK_SET);
fread(buffer, sizeof(buffer), 1, myfile);
fprintf(STDOUT, "temp file contains ’%s’0, buffer);
fclose(myfile);
DESCRIPTION
This library function is part of Netpbm.
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 stan‐
dard 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.
HISTORYpm_tmpfile() was introduced in Netpbm 10.20 (January 2004).
