* stdio-common/printf.h (struct printf_info): Add user element.

	New types printf_arginfo_size_function, printf_va_arg_function.
	Declare register_printf_specifier, register_printf_modifier,
	register_printf_type.
	* stdio-common/printf-parse.h (struct printf_spec): Add size element.
	(union printf_arg): Add pa_user element.
	Adjust __printf_arginfo_table type.
	Add __printf_va_arg_table, __printf_modifier_table,
	__handle_registered_modifier_mb, and __handle_registered_modifier_wc
	declarations.
	* stdio-common/printf-parsemb.c: Recognize registered modifiers.
	If registered arginfo call failed try normal specifier.
	* stdio-common/printf-prs.c: Pass additional parameter to arginfo
	function.
	* stdio-common/Makefile (routines): Add reg-modifier and reg-type.
	* stdio-common/Versions: Export register_printf_modifier,
	register_printf_type, and register_printf_specifier for GLIBC_2.10.
	* stdio-common/reg-modifier.c: New file.
	* stdio-common/reg-type.c: New file.
	* stdio-common/reg-printf.c (__register_printf_specifier): New
	function.  Mostly the old __register_printf_function function but
	uses locking and type of third parameter changed.
	(__register_printf_function): Implement using
	__register_printf_specifier.
	* stdio-common/vfprintf.c (vfprintf): Collect argument sizes in
	calls to arginfo functions.  Allocate enough memory for user-defined
	types.  Call new va_arg functions to get user-defined types.
	Try installed handlers even for existing format specifiers first.

1 files changed, 62 insertions, 0 deletions

diff --git a/stdio-common/reg-type.c b/stdio-common/reg-type.c
new file mode 100644
index 0000000000..7a96b2893a
--- /dev/null
+++ b/stdio-common/reg-type.c
@@ -0,0 +1,62 @@
+/* Copyright (C) 2009 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 <printf.h>
+#include <stdlib.h>
+#include <bits/libc-lock.h>
+
+
+/* Array of functions indexed by format character.  */
+libc_freeres_ptr (printf_va_arg_function **__printf_va_arg_table)
+  attribute_hidden;
+
+__libc_lock_define_initialized (static, lock);
+
+/* Last type allocated.  */
+static int pa_next_type = PA_LAST;
+
+
+int
+__register_printf_type (printf_va_arg_function fct)
+{
+  int result = -1;
+  __libc_lock_lock (lock);
+
+  if (__printf_va_arg_table == NULL)
+    {
+      __printf_va_arg_table = (printf_va_arg_function **)
+	calloc (0x100 - PA_LAST, sizeof (void *));
+      if (__printf_va_arg_table == NULL)
+	goto out;
+    }
+
+  if (pa_next_type == 0x100)
+    __set_errno (ENOSPC);
+  else
+    {
+      result = pa_next_type++;
+      __printf_va_arg_table[result - PA_LAST] = fct;
+    }
+
+ out:
+  __libc_lock_unlock (lock);
+
+  return result;
+}
+weak_alias (__register_printf_type, register_printf_type)