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9d26efa9 | 1 | /* Copyright (C) 1991,1996,1997,2002-2004,2009 Free Software Foundation, Inc. |
c84142e8 UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
c84142e8 UD |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
c84142e8 | 13 | |
41bdb6e2 AJ |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
28f540f4 | 18 | |
28f540f4 RM |
19 | #include <errno.h> |
20 | #include <limits.h> | |
21 | #include <printf.h> | |
8e96ae1a | 22 | #include <stddef.h> |
379c9e03 | 23 | #include <stdlib.h> |
9d26efa9 UD |
24 | #include <bits/libc-lock.h> |
25 | ||
28f540f4 RM |
26 | |
27 | /* Array of functions indexed by format character. */ | |
9d26efa9 | 28 | libc_freeres_ptr (printf_arginfo_size_function **__printf_arginfo_table) |
c877418f | 29 | attribute_hidden; |
6455d255 | 30 | printf_function **__printf_function_table attribute_hidden; |
28f540f4 | 31 | |
9d26efa9 UD |
32 | __libc_lock_define_initialized (static, lock) |
33 | ||
34 | int __register_printf_specifier (int, printf_function, | |
35 | printf_arginfo_size_function); | |
79937577 | 36 | int __register_printf_function (int, printf_function, |
9d26efa9 UD |
37 | printf_arginfo_function); |
38 | ||
a68b0d31 | 39 | |
28f540f4 RM |
40 | /* Register FUNC to be called to format SPEC specifiers. */ |
41 | int | |
9d26efa9 | 42 | __register_printf_specifier (spec, converter, arginfo) |
23396375 UD |
43 | int spec; |
44 | printf_function converter; | |
9d26efa9 | 45 | printf_arginfo_size_function arginfo; |
28f540f4 RM |
46 | { |
47 | if (spec < 0 || spec > (int) UCHAR_MAX) | |
48 | { | |
c4029823 | 49 | __set_errno (EINVAL); |
28f540f4 RM |
50 | return -1; |
51 | } | |
52 | ||
9d26efa9 UD |
53 | int result = 0; |
54 | __libc_lock_lock (lock); | |
55 | ||
c877418f RM |
56 | if (__printf_function_table == NULL) |
57 | { | |
9d26efa9 | 58 | __printf_arginfo_table = (printf_arginfo_size_function **) |
d0f534e9 | 59 | calloc (UCHAR_MAX + 1, sizeof (void *) * 2); |
c877418f | 60 | if (__printf_arginfo_table == NULL) |
9d26efa9 UD |
61 | { |
62 | result = -1; | |
63 | goto out; | |
64 | } | |
65 | ||
c877418f RM |
66 | __printf_function_table = (printf_function **) |
67 | (__printf_arginfo_table + UCHAR_MAX + 1); | |
68 | } | |
69 | ||
70 | __printf_function_table[spec] = converter; | |
28f540f4 | 71 | __printf_arginfo_table[spec] = arginfo; |
28f540f4 | 72 | |
9d26efa9 UD |
73 | out: |
74 | __libc_lock_unlock (lock); | |
75 | ||
76 | return result; | |
77 | } | |
78 | weak_alias (__register_printf_specifier, register_printf_specifier) | |
79 | ||
80 | ||
81 | /* Register FUNC to be called to format SPEC specifiers. */ | |
82 | int | |
83 | __register_printf_function (spec, converter, arginfo) | |
84 | int spec; | |
85 | printf_function converter; | |
86 | printf_arginfo_function arginfo; | |
87 | { | |
88 | return __register_printf_specifier (spec, converter, | |
89 | (printf_arginfo_size_function*) arginfo); | |
28f540f4 | 90 | } |
23396375 | 91 | weak_alias (__register_printf_function, register_printf_function) |