SYNOPSIS
#include <pslib.h>
int PS_open_file(PSDoc *psdoc, const char *filename)
DESCRIPTION
Creates a new file on disk and writes the PostScript document into it. The file will be closed when PS_close(3) is called. If filename is NULL, empty or `-', then the file will be created in memory and retrieved with PS_get_buffer(3).
RETURN VALUE
Returns -1 in case of an error and 0 otherwise.