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-rw-r--r--stdio/reg-printf.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/stdio/reg-printf.c b/stdio/reg-printf.c
new file mode 100644
index 0000000000..95d7a1f3c9
--- /dev/null
+++ b/stdio/reg-printf.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1991 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#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;
+
+/* Register FUNC to be called to format SPEC specifiers. */
+int
+DEFUN(register_printf_function, (spec, converter, arginfo),
+ int spec AND printf_function converter AND
+ printf_arginfo_function arginfo)
+{
+ if (spec < 0 || spec > (int) UCHAR_MAX)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ __printf_function_table = printf_funcs;
+ __printf_arginfo_table[spec] = arginfo;
+ printf_funcs[spec] = converter;
+
+ return 0;
+}