diff options
Diffstat (limited to 'REORG.TODO/stdio-common/reg-printf.c')
-rw-r--r-- | REORG.TODO/stdio-common/reg-printf.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/REORG.TODO/stdio-common/reg-printf.c b/REORG.TODO/stdio-common/reg-printf.c new file mode 100644 index 0000000000..cbb9307795 --- /dev/null +++ b/REORG.TODO/stdio-common/reg-printf.c @@ -0,0 +1,86 @@ +/* Copyright (C) 1991-2017 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, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <limits.h> +#include <printf.h> +#include <stddef.h> +#include <stdlib.h> +#include <libc-lock.h> + + +/* Array of functions indexed by format character. */ +libc_freeres_ptr (printf_arginfo_size_function **__printf_arginfo_table) + attribute_hidden; +printf_function **__printf_function_table attribute_hidden; + +__libc_lock_define_initialized (static, lock) + +int __register_printf_specifier (int, printf_function, + printf_arginfo_size_function); +int __register_printf_function (int, printf_function, + printf_arginfo_function); + + +/* Register FUNC to be called to format SPEC specifiers. */ +int +__register_printf_specifier (int spec, printf_function converter, + printf_arginfo_size_function arginfo) +{ + if (spec < 0 || spec > (int) UCHAR_MAX) + { + __set_errno (EINVAL); + return -1; + } + + int result = 0; + __libc_lock_lock (lock); + + if (__printf_function_table == NULL) + { + __printf_arginfo_table = (printf_arginfo_size_function **) + calloc (UCHAR_MAX + 1, sizeof (void *) * 2); + if (__printf_arginfo_table == NULL) + { + result = -1; + goto out; + } + + __printf_function_table = (printf_function **) + (__printf_arginfo_table + UCHAR_MAX + 1); + } + + __printf_function_table[spec] = converter; + __printf_arginfo_table[spec] = arginfo; + + out: + __libc_lock_unlock (lock); + + return result; +} +weak_alias (__register_printf_specifier, register_printf_specifier) + + +/* Register FUNC to be called to format SPEC specifiers. */ +int +__register_printf_function (int spec, printf_function converter, + printf_arginfo_function arginfo) +{ + return __register_printf_specifier (spec, converter, + (printf_arginfo_size_function*) arginfo); +} +weak_alias (__register_printf_function, register_printf_function) |