1 /* Copyright (C) 2009-2012 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
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.
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
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
23 #include <bits/libc-lock.h>
26 struct printf_modifier_record
28 struct printf_modifier_record *next;
33 struct printf_modifier_record **__printf_modifier_table attribute_hidden;
35 __libc_lock_define_initialized (static, lock)
37 /* Bits to hand out. */
42 __register_printf_modifier (const wchar_t *str)
51 const wchar_t *wc = str;
53 if (*wc < 0 || *wc > (wchar_t) UCHAR_MAX)
58 if (next_bit / 8 == sizeof (((struct printf_info *) NULL)->user))
65 __libc_lock_lock (lock);
67 if (__printf_modifier_table == NULL)
69 __printf_modifier_table = calloc (UCHAR_MAX,
70 sizeof (*__printf_modifier_table));
71 if (__printf_modifier_table == NULL)
75 /* Create enough room for the string. But we don't need the first
77 struct printf_modifier_record *newp = malloc (sizeof (*newp)
83 newp->next = __printf_modifier_table[(unsigned char) *str];
84 newp->bit = 1 << next_bit++;
85 __wmemcpy (newp->str, str + 1, wc - str);
87 __printf_modifier_table[(unsigned char) *str] = newp;
92 __libc_lock_unlock (lock);
96 weak_alias (__register_printf_modifier, register_printf_modifier)
102 __handle_registered_modifier_mb (const unsigned char **format,
103 struct printf_info *info)
105 struct printf_modifier_record *runp = __printf_modifier_table[**format];
109 const unsigned char *best_cp = NULL;
113 const unsigned char *cp = *format + 1;
114 wchar_t *fcp = runp->str;
116 while (*cp != '\0' && *fcp != L'\0')
122 if (*fcp == L'\0' && cp - *format > best_len)
125 best_len = cp - *format;
126 best_bit = runp->bit;
134 info->user |= best_bit;
145 __handle_registered_modifier_wc (const unsigned int **format,
146 struct printf_info *info)
148 struct printf_modifier_record *runp = __printf_modifier_table[**format];
152 const unsigned int *best_cp = NULL;
156 const unsigned int *cp = *format + 1;
157 wchar_t *fcp = runp->str;
159 while (*cp != '\0' && *fcp != L'\0')
165 if (*fcp == L'\0' && cp - *format > best_len)
168 best_len = cp - *format;
169 best_bit = runp->bit;
177 info->user |= best_bit;
186 libc_freeres_fn (free_mem)
188 if (__printf_modifier_table != NULL)
190 for (int i = 0; i < UCHAR_MAX; ++i)
192 struct printf_modifier_record *runp = __printf_modifier_table[i];
195 struct printf_modifier_record *oldp = runp;
200 free (__printf_modifier_table);