glibc/stdio-common/reg-printf.c

52 lines
1.7 KiB
C

/* Copyright (C) 1991, 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <limits.h>
#include <printf.h>
/* Array of functions indexed by format character. */
static printf_function *printf_funcs[UCHAR_MAX + 1];
printf_arginfo_function *__printf_arginfo_table[UCHAR_MAX + 1];
printf_function **__printf_function_table;
int __register_printf_function __P ((int, printf_function,
printf_arginfo_function));
/* Register FUNC to be called to format SPEC specifiers. */
int
__register_printf_function (spec, converter, arginfo)
int spec;
printf_function converter;
printf_arginfo_function arginfo;
{
if (spec < 0 || spec > (int) UCHAR_MAX)
{
__set_errno (EINVAL);
return -1;
}
__printf_function_table = printf_funcs;
__printf_arginfo_table[spec] = arginfo;
printf_funcs[spec] = converter;
return 0;
}
weak_alias (__register_printf_function, register_printf_function)