Line data Source code
1 : /* Decomposed printf argument list.
2 : Copyright (C) 1999, 2002-2003, 2005-2007, 2009-2016 Free Software
3 : Foundation, Inc.
4 :
5 : This program is free software; you can redistribute it and/or modify
6 : it under the terms of the GNU General Public License as published by
7 : the Free Software Foundation; either version 3, or (at your option)
8 : any later version.
9 :
10 : This program is distributed in the hope that it will be useful,
11 : but WITHOUT ANY WARRANTY; without even the implied warranty of
12 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 : GNU General Public License for more details.
14 :
15 : You should have received a copy of the GNU General Public License along
16 : with this program; if not, see <http://www.gnu.org/licenses/>. */
17 :
18 : /* This file can be parametrized with the following macros:
19 : ENABLE_UNISTDIO Set to 1 to enable the unistdio extensions.
20 : PRINTF_FETCHARGS Name of the function to be defined.
21 : STATIC Set to 'static' to declare the function static. */
22 :
23 : #ifndef PRINTF_FETCHARGS
24 : # include <config.h>
25 : #endif
26 :
27 : /* Specification. */
28 : #ifndef PRINTF_FETCHARGS
29 : # include "printf-args.h"
30 : #endif
31 :
32 : #ifdef STATIC
33 : STATIC
34 : #endif
35 : int
36 0 : PRINTF_FETCHARGS (va_list args, arguments *a)
37 : {
38 : size_t i;
39 : argument *ap;
40 :
41 0 : for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++)
42 0 : switch (ap->type)
43 : {
44 : case TYPE_SCHAR:
45 0 : ap->a.a_schar = va_arg (args, /*signed char*/ int);
46 0 : break;
47 : case TYPE_UCHAR:
48 0 : ap->a.a_uchar = va_arg (args, /*unsigned char*/ int);
49 0 : break;
50 : case TYPE_SHORT:
51 0 : ap->a.a_short = va_arg (args, /*short*/ int);
52 0 : break;
53 : case TYPE_USHORT:
54 0 : ap->a.a_ushort = va_arg (args, /*unsigned short*/ int);
55 0 : break;
56 : case TYPE_INT:
57 0 : ap->a.a_int = va_arg (args, int);
58 0 : break;
59 : case TYPE_UINT:
60 0 : ap->a.a_uint = va_arg (args, unsigned int);
61 0 : break;
62 : case TYPE_LONGINT:
63 0 : ap->a.a_longint = va_arg (args, long int);
64 0 : break;
65 : case TYPE_ULONGINT:
66 0 : ap->a.a_ulongint = va_arg (args, unsigned long int);
67 0 : break;
68 : #if HAVE_LONG_LONG_INT
69 : case TYPE_LONGLONGINT:
70 0 : ap->a.a_longlongint = va_arg (args, long long int);
71 0 : break;
72 : case TYPE_ULONGLONGINT:
73 0 : ap->a.a_ulonglongint = va_arg (args, unsigned long long int);
74 0 : break;
75 : #endif
76 : case TYPE_DOUBLE:
77 0 : ap->a.a_double = va_arg (args, double);
78 0 : break;
79 : case TYPE_LONGDOUBLE:
80 0 : ap->a.a_longdouble = va_arg (args, long double);
81 0 : break;
82 : case TYPE_CHAR:
83 0 : ap->a.a_char = va_arg (args, int);
84 0 : break;
85 : #if HAVE_WINT_T
86 : case TYPE_WIDE_CHAR:
87 : /* Although ISO C 99 7.24.1.(2) says that wint_t is "unchanged by
88 : default argument promotions", this is not the case in mingw32,
89 : where wint_t is 'unsigned short'. */
90 0 : ap->a.a_wide_char =
91 : (sizeof (wint_t) < sizeof (int)
92 : ? (wint_t) va_arg (args, int)
93 0 : : va_arg (args, wint_t));
94 0 : break;
95 : #endif
96 : case TYPE_STRING:
97 0 : ap->a.a_string = va_arg (args, const char *);
98 : /* A null pointer is an invalid argument for "%s", but in practice
99 : it occurs quite frequently in printf statements that produce
100 : debug output. Use a fallback in this case. */
101 0 : if (ap->a.a_string == NULL)
102 0 : ap->a.a_string = "(NULL)";
103 0 : break;
104 : #if HAVE_WCHAR_T
105 : case TYPE_WIDE_STRING:
106 0 : ap->a.a_wide_string = va_arg (args, const wchar_t *);
107 : /* A null pointer is an invalid argument for "%ls", but in practice
108 : it occurs quite frequently in printf statements that produce
109 : debug output. Use a fallback in this case. */
110 0 : if (ap->a.a_wide_string == NULL)
111 : {
112 : static const wchar_t wide_null_string[] =
113 : {
114 : (wchar_t)'(',
115 : (wchar_t)'N', (wchar_t)'U', (wchar_t)'L', (wchar_t)'L',
116 : (wchar_t)')',
117 : (wchar_t)0
118 : };
119 0 : ap->a.a_wide_string = wide_null_string;
120 : }
121 0 : break;
122 : #endif
123 : case TYPE_POINTER:
124 0 : ap->a.a_pointer = va_arg (args, void *);
125 0 : break;
126 : case TYPE_COUNT_SCHAR_POINTER:
127 0 : ap->a.a_count_schar_pointer = va_arg (args, signed char *);
128 0 : break;
129 : case TYPE_COUNT_SHORT_POINTER:
130 0 : ap->a.a_count_short_pointer = va_arg (args, short *);
131 0 : break;
132 : case TYPE_COUNT_INT_POINTER:
133 0 : ap->a.a_count_int_pointer = va_arg (args, int *);
134 0 : break;
135 : case TYPE_COUNT_LONGINT_POINTER:
136 0 : ap->a.a_count_longint_pointer = va_arg (args, long int *);
137 0 : break;
138 : #if HAVE_LONG_LONG_INT
139 : case TYPE_COUNT_LONGLONGINT_POINTER:
140 0 : ap->a.a_count_longlongint_pointer = va_arg (args, long long int *);
141 0 : break;
142 : #endif
143 : #if ENABLE_UNISTDIO
144 : /* The unistdio extensions. */
145 : case TYPE_U8_STRING:
146 : ap->a.a_u8_string = va_arg (args, const uint8_t *);
147 : /* A null pointer is an invalid argument for "%U", but in practice
148 : it occurs quite frequently in printf statements that produce
149 : debug output. Use a fallback in this case. */
150 : if (ap->a.a_u8_string == NULL)
151 : {
152 : static const uint8_t u8_null_string[] =
153 : { '(', 'N', 'U', 'L', 'L', ')', 0 };
154 : ap->a.a_u8_string = u8_null_string;
155 : }
156 : break;
157 : case TYPE_U16_STRING:
158 : ap->a.a_u16_string = va_arg (args, const uint16_t *);
159 : /* A null pointer is an invalid argument for "%lU", but in practice
160 : it occurs quite frequently in printf statements that produce
161 : debug output. Use a fallback in this case. */
162 : if (ap->a.a_u16_string == NULL)
163 : {
164 : static const uint16_t u16_null_string[] =
165 : { '(', 'N', 'U', 'L', 'L', ')', 0 };
166 : ap->a.a_u16_string = u16_null_string;
167 : }
168 : break;
169 : case TYPE_U32_STRING:
170 : ap->a.a_u32_string = va_arg (args, const uint32_t *);
171 : /* A null pointer is an invalid argument for "%llU", but in practice
172 : it occurs quite frequently in printf statements that produce
173 : debug output. Use a fallback in this case. */
174 : if (ap->a.a_u32_string == NULL)
175 : {
176 : static const uint32_t u32_null_string[] =
177 : { '(', 'N', 'U', 'L', 'L', ')', 0 };
178 : ap->a.a_u32_string = u32_null_string;
179 : }
180 : break;
181 : #endif
182 : default:
183 : /* Unknown type. */
184 0 : return -1;
185 : }
186 0 : return 0;
187 : }
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