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9d26efa90c
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.
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/* Copyright (C) 2009 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <printf.h>
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#include <stdlib.h>
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#include <bits/libc-lock.h>
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/* Array of functions indexed by format character. */
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libc_freeres_ptr (printf_va_arg_function **__printf_va_arg_table)
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attribute_hidden;
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__libc_lock_define_initialized (static, lock);
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/* Last type allocated. */
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static int pa_next_type = PA_LAST;
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int
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__register_printf_type (printf_va_arg_function fct)
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{
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int result = -1;
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__libc_lock_lock (lock);
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if (__printf_va_arg_table == NULL)
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{
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__printf_va_arg_table = (printf_va_arg_function **)
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calloc (0x100 - PA_LAST, sizeof (void *));
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if (__printf_va_arg_table == NULL)
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goto out;
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}
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if (pa_next_type == 0x100)
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__set_errno (ENOSPC);
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else
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{
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result = pa_next_type++;
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__printf_va_arg_table[result - PA_LAST] = fct;
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}
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out:
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__libc_lock_unlock (lock);
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return result;
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}
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weak_alias (__register_printf_type, register_printf_type)
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