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author | Ulrich Drepper <drepper@redhat.com> | 2009-04-11 05:34:20 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2009-04-11 05:34:20 +0000 |
commit | 9d26efa90c6dcbcd6b3e586c9927b6058ef4d529 (patch) | |
tree | fc306e24bf4b956abba8782e78d4118639c46361 /stdio-common/reg-type.c | |
parent | f140a0d53d639c86408ac532091fb4644faa95c0 (diff) | |
download | glibc-9d26efa90c6dcbcd6b3e586c9927b6058ef4d529.tar.gz glibc-9d26efa90c6dcbcd6b3e586c9927b6058ef4d529.tar.xz glibc-9d26efa90c6dcbcd6b3e586c9927b6058ef4d529.zip |
* 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.
Diffstat (limited to 'stdio-common/reg-type.c')
-rw-r--r-- | stdio-common/reg-type.c | 62 |
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) |