1 | /* Decomposed printf argument list. |
2 | Copyright (C) 1999, 2002-2003, 2005-2007, 2009-2012 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 Lesser General Public License as published by |
7 | the Free Software Foundation; either version 2.1, 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 Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser 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 | PRINTF_FETCHARGS (va_list args, arguments *a) |
37 | { |
38 | size_t i; |
39 | argument *ap; |
40 | |
41 | for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++) |
42 | switch (ap->type) |
43 | { |
44 | case TYPE_SCHAR: |
45 | ap->a.a_schar = va_arg (args, /*signed char*/ int); |
46 | break; |
47 | case TYPE_UCHAR: |
48 | ap->a.a_uchar = va_arg (args, /*unsigned char*/ int); |
49 | break; |
50 | case TYPE_SHORT: |
51 | ap->a.a_short = va_arg (args, /*short*/ int); |
52 | break; |
53 | case TYPE_USHORT: |
54 | ap->a.a_ushort = va_arg (args, /*unsigned short*/ int); |
55 | break; |
56 | case TYPE_INT: |
57 | ap->a.a_int = va_arg (args, int); |
58 | break; |
59 | case TYPE_UINT: |
60 | ap->a.a_uint = va_arg (args, unsigned int); |
61 | break; |
62 | case TYPE_LONGINT: |
63 | ap->a.a_longint = va_arg (args, long int); |
64 | break; |
65 | case TYPE_ULONGINT: |
66 | ap->a.a_ulongint = va_arg (args, unsigned long int); |
67 | break; |
68 | #if HAVE_LONG_LONG_INT |
69 | case TYPE_LONGLONGINT: |
70 | ap->a.a_longlongint = va_arg (args, long long int); |
71 | break; |
72 | case TYPE_ULONGLONGINT: |
73 | ap->a.a_ulonglongint = va_arg (args, unsigned long long int); |
74 | break; |
75 | #endif |
76 | case TYPE_DOUBLE: |
77 | ap->a.a_double = va_arg (args, double); |
78 | break; |
79 | case TYPE_LONGDOUBLE: |
80 | ap->a.a_longdouble = va_arg (args, long double); |
81 | break; |
82 | case TYPE_CHAR: |
83 | ap->a.a_char = va_arg (args, int); |
84 | 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 | ap->a.a_wide_char = |
91 | (sizeof (wint_t) < sizeof (int) |
92 | ? (wint_t) va_arg (args, int) |
93 | : va_arg (args, wint_t)); |
94 | break; |
95 | #endif |
96 | case TYPE_STRING: |
97 | 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 | if (ap->a.a_string == NULL) |
102 | ap->a.a_string = "(NULL)" ; |
103 | break; |
104 | #if HAVE_WCHAR_T |
105 | case TYPE_WIDE_STRING: |
106 | 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 | 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 | ap->a.a_wide_string = wide_null_string; |
120 | } |
121 | break; |
122 | #endif |
123 | case TYPE_POINTER: |
124 | ap->a.a_pointer = va_arg (args, void *); |
125 | break; |
126 | case TYPE_COUNT_SCHAR_POINTER: |
127 | ap->a.a_count_schar_pointer = va_arg (args, signed char *); |
128 | break; |
129 | case TYPE_COUNT_SHORT_POINTER: |
130 | ap->a.a_count_short_pointer = va_arg (args, short *); |
131 | break; |
132 | case TYPE_COUNT_INT_POINTER: |
133 | ap->a.a_count_int_pointer = va_arg (args, int *); |
134 | break; |
135 | case TYPE_COUNT_LONGINT_POINTER: |
136 | ap->a.a_count_longint_pointer = va_arg (args, long int *); |
137 | break; |
138 | #if HAVE_LONG_LONG_INT |
139 | case TYPE_COUNT_LONGLONGINT_POINTER: |
140 | ap->a.a_count_longlongint_pointer = va_arg (args, long long int *); |
141 | 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 | return -1; |
185 | } |
186 | return 0; |
187 | } |
188 | |