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265
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1 /* Decomposed printf argument list.
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2 Copyright (C) 1999, 2002-2003, 2005-2007 Free Software Foundation, Inc.
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 2, or (at your option)
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7 any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License along
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15 with this program; if not, write to the Free Software Foundation,
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16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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17
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18 /* This file can be parametrized with the following macros:
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19 ENABLE_UNISTDIO Set to 1 to enable the unistdio extensions.
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20 PRINTF_FETCHARGS Name of the function to be defined.
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21 STATIC Set to 'static' to declare the function static. */
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22
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23 #ifndef PRINTF_FETCHARGS
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24 # include <config.h>
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25 #endif
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26
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27 /* Specification. */
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28 #ifndef PRINTF_FETCHARGS
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29 # include "printf-args.h"
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30 #endif
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31
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32 #ifdef STATIC
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33 STATIC
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34 #endif
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35 int
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36 PRINTF_FETCHARGS (va_list args, arguments *a)
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37 {
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38 size_t i;
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39 argument *ap;
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40
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41 for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++)
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42 switch (ap->type)
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43 {
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44 case TYPE_SCHAR:
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45 ap->a.a_schar = va_arg (args, /*signed char*/ int);
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46 break;
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47 case TYPE_UCHAR:
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48 ap->a.a_uchar = va_arg (args, /*unsigned char*/ int);
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49 break;
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50 case TYPE_SHORT:
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51 ap->a.a_short = va_arg (args, /*short*/ int);
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52 break;
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53 case TYPE_USHORT:
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54 ap->a.a_ushort = va_arg (args, /*unsigned short*/ int);
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55 break;
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56 case TYPE_INT:
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57 ap->a.a_int = va_arg (args, int);
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58 break;
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59 case TYPE_UINT:
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60 ap->a.a_uint = va_arg (args, unsigned int);
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61 break;
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62 case TYPE_LONGINT:
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63 ap->a.a_longint = va_arg (args, long int);
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64 break;
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65 case TYPE_ULONGINT:
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66 ap->a.a_ulongint = va_arg (args, unsigned long int);
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67 break;
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68 #if HAVE_LONG_LONG_INT
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69 case TYPE_LONGLONGINT:
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70 ap->a.a_longlongint = va_arg (args, long long int);
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71 break;
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72 case TYPE_ULONGLONGINT:
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73 ap->a.a_ulonglongint = va_arg (args, unsigned long long int);
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74 break;
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75 #endif
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76 case TYPE_DOUBLE:
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77 ap->a.a_double = va_arg (args, double);
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78 break;
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79 case TYPE_LONGDOUBLE:
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80 ap->a.a_longdouble = va_arg (args, long double);
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81 break;
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82 case TYPE_CHAR:
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83 ap->a.a_char = va_arg (args, int);
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84 break;
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85 #if HAVE_WINT_T
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86 case TYPE_WIDE_CHAR:
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87 /* Although ISO C 99 7.24.1.(2) says that wint_t is "unchanged by
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88 default argument promotions", this is not the case in mingw32,
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89 where wint_t is 'unsigned short'. */
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90 ap->a.a_wide_char =
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91 (sizeof (wint_t) < sizeof (int)
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92 ? va_arg (args, int)
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93 : va_arg (args, wint_t));
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94 break;
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95 #endif
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96 case TYPE_STRING:
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97 ap->a.a_string = va_arg (args, const char *);
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98 /* A null pointer is an invalid argument for "%s", but in practice
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99 it occurs quite frequently in printf statements that produce
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100 debug output. Use a fallback in this case. */
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101 if (ap->a.a_string == NULL)
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102 ap->a.a_string = "(NULL)";
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103 break;
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104 #if HAVE_WCHAR_T
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105 case TYPE_WIDE_STRING:
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106 ap->a.a_wide_string = va_arg (args, const wchar_t *);
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107 /* A null pointer is an invalid argument for "%ls", but in practice
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108 it occurs quite frequently in printf statements that produce
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109 debug output. Use a fallback in this case. */
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110 if (ap->a.a_wide_string == NULL)
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111 {
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112 static const wchar_t wide_null_string[] =
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113 {
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114 (wchar_t)'(',
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115 (wchar_t)'N', (wchar_t)'U', (wchar_t)'L', (wchar_t)'L',
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116 (wchar_t)')',
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117 (wchar_t)0
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118 };
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119 ap->a.a_wide_string = wide_null_string;
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120 }
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121 break;
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122 #endif
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123 case TYPE_POINTER:
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124 ap->a.a_pointer = va_arg (args, void *);
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125 break;
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126 case TYPE_COUNT_SCHAR_POINTER:
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127 ap->a.a_count_schar_pointer = va_arg (args, signed char *);
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128 break;
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129 case TYPE_COUNT_SHORT_POINTER:
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130 ap->a.a_count_short_pointer = va_arg (args, short *);
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131 break;
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132 case TYPE_COUNT_INT_POINTER:
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133 ap->a.a_count_int_pointer = va_arg (args, int *);
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134 break;
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135 case TYPE_COUNT_LONGINT_POINTER:
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136 ap->a.a_count_longint_pointer = va_arg (args, long int *);
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137 break;
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138 #if HAVE_LONG_LONG_INT
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139 case TYPE_COUNT_LONGLONGINT_POINTER:
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140 ap->a.a_count_longlongint_pointer = va_arg (args, long long int *);
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141 break;
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142 #endif
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143 #if ENABLE_UNISTDIO
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144 /* The unistdio extensions. */
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145 case TYPE_U8_STRING:
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146 ap->a.a_u8_string = va_arg (args, const uint8_t *);
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147 /* A null pointer is an invalid argument for "%U", but in practice
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148 it occurs quite frequently in printf statements that produce
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149 debug output. Use a fallback in this case. */
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150 if (ap->a.a_u8_string == NULL)
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151 {
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152 static const uint8_t u8_null_string[] =
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153 { '(', 'N', 'U', 'L', 'L', ')', 0 };
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154 ap->a.a_u8_string = u8_null_string;
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155 }
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156 break;
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157 case TYPE_U16_STRING:
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158 ap->a.a_u16_string = va_arg (args, const uint16_t *);
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159 /* A null pointer is an invalid argument for "%lU", but in practice
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160 it occurs quite frequently in printf statements that produce
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161 debug output. Use a fallback in this case. */
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162 if (ap->a.a_u16_string == NULL)
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163 {
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164 static const uint16_t u16_null_string[] =
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165 { '(', 'N', 'U', 'L', 'L', ')', 0 };
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166 ap->a.a_u16_string = u16_null_string;
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167 }
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168 break;
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169 case TYPE_U32_STRING:
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170 ap->a.a_u32_string = va_arg (args, const uint32_t *);
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171 /* A null pointer is an invalid argument for "%llU", but in practice
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172 it occurs quite frequently in printf statements that produce
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173 debug output. Use a fallback in this case. */
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174 if (ap->a.a_u32_string == NULL)
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175 {
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176 static const uint32_t u32_null_string[] =
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177 { '(', 'N', 'U', 'L', 'L', ')', 0 };
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178 ap->a.a_u32_string = u32_null_string;
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179 }
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180 break;
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181 #endif
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182 default:
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183 /* Unknown type. */
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184 return -1;
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185 }
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186 return 0;
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187 }
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