1 | /* |
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2 | * Copyright (c) 1990 The Regents of the University of California. |
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3 | * All rights reserved. |
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4 | * |
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5 | * This code is derived from software contributed to Berkeley by |
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6 | * Chris Torek. |
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7 | * |
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8 | * Redistribution and use in source and binary forms, with or without |
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9 | * modification, are permitted provided that the following conditions |
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10 | * are met: |
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11 | * 1. Redistributions of source code must retain the above copyright |
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12 | * notice, this list of conditions and the following disclaimer. |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * 3. All advertising materials mentioning features or use of this software |
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17 | * must display the following acknowledgement: |
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18 | * This product includes software developed by the University of |
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19 | * California, Berkeley and its contributors. |
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20 | * 4. Neither the name of the University nor the names of its contributors |
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21 | * may be used to endorse or promote products derived from this software |
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22 | * without specific prior written permission. |
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23 | * |
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24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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34 | * SUCH DAMAGE. |
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35 | */ |
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36 | |
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37 | /* |
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38 | FUNCTION |
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39 | <<vfprintf>>, <<vprintf>>, <<vsprintf>>, <<vsnprintf>>, <<vasprintf>>, <<vasnprintf>>---format argument list |
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40 | |
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41 | INDEX |
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42 | vfprintf |
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43 | INDEX |
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44 | _vfprintf_r |
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45 | INDEX |
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46 | vprintf |
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47 | INDEX |
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48 | _vprintf_r |
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49 | INDEX |
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50 | vsprintf |
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51 | INDEX |
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52 | _vsprintf_r |
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53 | INDEX |
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54 | vsnprintf |
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55 | INDEX |
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56 | _vsnprintf_r |
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57 | INDEX |
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58 | vasprintf |
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59 | INDEX |
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60 | _vasprintf_r |
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61 | INDEX |
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62 | vasnprintf |
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63 | INDEX |
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64 | _vasnprintf_r |
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65 | |
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66 | SYNOPSIS |
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67 | #include <stdio.h> |
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68 | #include <stdarg.h> |
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69 | int vprintf(const char *<[fmt]>, va_list <[list]>); |
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70 | int vfprintf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>); |
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71 | int vsprintf(char *<[str]>, const char *<[fmt]>, va_list <[list]>); |
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72 | int vsnprintf(char *<[str]>, size_t <[size]>, const char *<[fmt]>, |
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73 | va_list <[list]>); |
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74 | int vasprintf(char **<[strp]>, const char *<[fmt]>, va_list <[list]>); |
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75 | char *vasnprintf(char *<[str]>, size_t *<[size]>, const char *<[fmt]>, |
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76 | va_list <[list]>); |
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77 | |
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78 | int _vprintf_r(struct _reent *<[reent]>, const char *<[fmt]>, |
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79 | va_list <[list]>); |
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80 | int _vfprintf_r(struct _reent *<[reent]>, FILE *<[fp]>, |
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81 | const char *<[fmt]>, va_list <[list]>); |
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82 | int _vsprintf_r(struct _reent *<[reent]>, char *<[str]>, |
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83 | const char *<[fmt]>, va_list <[list]>); |
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84 | int _vasprintf_r(struct _reent *<[reent]>, char **<[str]>, |
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85 | const char *<[fmt]>, va_list <[list]>); |
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86 | int _vsnprintf_r(struct _reent *<[reent]>, char *<[str]>, |
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87 | size_t <[size]>, const char *<[fmt]>, va_list <[list]>); |
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88 | char *_vasnprintf_r(struct _reent *<[reent]>, char *<[str]>, |
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89 | size_t *<[size]>, const char *<[fmt]>, va_list <[list]>); |
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90 | |
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91 | DESCRIPTION |
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92 | <<vprintf>>, <<vfprintf>>, <<vasprintf>>, <<vsprintf>>, <<vsnprintf>>, |
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93 | and <<vasnprintf>> are (respectively) variants of <<printf>>, |
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94 | <<fprintf>>, <<asprintf>>, <<sprintf>>, <<snprintf>>, and |
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95 | <<asnprintf>>. They differ only in allowing their caller to pass the |
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96 | variable argument list as a <<va_list>> object (initialized by |
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97 | <<va_start>>) rather than directly accepting a variable number of |
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98 | arguments. The caller is responsible for calling <<va_end>>. |
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99 | |
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100 | <<_vprintf_r>>, <<_vfprintf_r>>, <<_vasprintf_r>>, <<_vsprintf_r>>, |
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101 | <<_vsnprintf_r>>, and <<_vasnprintf_r>> are reentrant versions of the |
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102 | above. |
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103 | |
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104 | RETURNS |
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105 | The return values are consistent with the corresponding functions. |
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106 | |
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107 | PORTABILITY |
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108 | ANSI C requires <<vprintf>>, <<vfprintf>>, <<vsprintf>>, and |
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109 | <<vsnprintf>>. The remaining functions are newlib extensions. |
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110 | |
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111 | Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, |
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112 | <<lseek>>, <<read>>, <<sbrk>>, <<write>>. |
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113 | */ |
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114 | |
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115 | #if defined(LIBC_SCCS) && !defined(lint) |
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116 | /*static char *sccsid = "from: @(#)vfprintf.c 5.50 (Berkeley) 12/16/92";*/ |
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117 | static char *rcsid = "$Id$"; |
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118 | #endif /* LIBC_SCCS and not lint */ |
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119 | |
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120 | /* |
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121 | * Actual printf innards. |
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122 | * |
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123 | * This code is large and complicated... |
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124 | */ |
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125 | #include <newlib.h> |
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126 | |
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127 | #ifdef INTEGER_ONLY |
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128 | # define VFPRINTF vfiprintf |
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129 | # ifdef STRING_ONLY |
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130 | # define _VFPRINTF_R _svfiprintf_r |
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131 | # else |
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132 | # define _VFPRINTF_R _vfiprintf_r |
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133 | # endif |
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134 | #else |
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135 | # define VFPRINTF vfprintf |
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136 | # ifdef STRING_ONLY |
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137 | # define _VFPRINTF_R _svfprintf_r |
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138 | # else |
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139 | # define _VFPRINTF_R _vfprintf_r |
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140 | # endif |
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141 | # ifndef NO_FLOATING_POINT |
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142 | # define FLOATING_POINT |
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143 | # endif |
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144 | #endif |
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145 | |
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146 | #define _NO_POS_ARGS |
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147 | #ifdef _WANT_IO_POS_ARGS |
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148 | # undef _NO_POS_ARGS |
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149 | #endif |
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150 | |
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151 | #include <_ansi.h> |
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152 | #include <reent.h> |
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153 | #include <stdio.h> |
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154 | #include <stdlib.h> |
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155 | #include <string.h> |
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156 | #include <limits.h> |
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157 | #include <stdint.h> |
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158 | #include <wchar.h> |
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159 | #include <sys/lock.h> |
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160 | #include <stdarg.h> |
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161 | #include "local.h" |
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162 | #include "../stdlib/local.h" |
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163 | #include "fvwrite.h" |
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164 | #include "vfieeefp.h" |
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165 | |
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166 | /* Currently a test is made to see if long double processing is warranted. |
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167 | This could be changed in the future should the _ldtoa_r code be |
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168 | preferred over _dtoa_r. */ |
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169 | #define _NO_LONGDBL |
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170 | #if defined _WANT_IO_LONG_DOUBLE && (LDBL_MANT_DIG > DBL_MANT_DIG) |
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171 | #undef _NO_LONGDBL |
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172 | #endif |
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173 | |
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174 | #define _NO_LONGLONG |
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175 | #if defined _WANT_IO_LONG_LONG \ |
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176 | && (defined __GNUC__ || __STDC_VERSION__ >= 199901L) |
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177 | # undef _NO_LONGLONG |
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178 | #endif |
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179 | |
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180 | #ifdef STRING_ONLY |
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181 | # ifdef _FVWRITE_IN_STREAMIO |
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182 | # define __SPRINT __ssprint_r |
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183 | # else |
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184 | # define __SPRINT __ssputs_r |
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185 | # endif |
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186 | #else |
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187 | # ifdef _FVWRITE_IN_STREAMIO |
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188 | # define __SPRINT __sprint_r |
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189 | # else |
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190 | # define __SPRINT __sfputs_r |
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191 | # endif |
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192 | #endif |
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193 | |
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194 | /* The __sprint_r/__ssprint_r functions are shared between all versions of |
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195 | vfprintf and vfwprintf. They must only be defined once, which we do in |
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196 | the INTEGER_ONLY versions here. */ |
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197 | #ifdef STRING_ONLY |
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198 | #ifdef INTEGER_ONLY |
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199 | #ifndef _FVWRITE_IN_STREAMIO |
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200 | int |
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201 | __ssputs_r (struct _reent *ptr, |
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202 | FILE *fp, |
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203 | const char *buf, |
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204 | size_t len) |
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205 | { |
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206 | register int w; |
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207 | |
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208 | w = fp->_w; |
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209 | if (len >= w && fp->_flags & (__SMBF | __SOPT)) { |
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210 | /* must be asprintf family */ |
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211 | unsigned char *str; |
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212 | int curpos = (fp->_p - fp->_bf._base); |
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213 | /* Choose a geometric growth factor to avoid |
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214 | * quadratic realloc behavior, but use a rate less |
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215 | * than (1+sqrt(5))/2 to accomodate malloc |
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216 | * overhead. asprintf EXPECTS us to overallocate, so |
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217 | * that it can add a trailing \0 without |
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218 | * reallocating. The new allocation should thus be |
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219 | * max(prev_size*1.5, curpos+len+1). */ |
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220 | int newsize = fp->_bf._size * 3 / 2; |
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221 | if (newsize < curpos + len + 1) |
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222 | newsize = curpos + len + 1; |
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223 | if (fp->_flags & __SOPT) |
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224 | { |
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225 | /* asnprintf leaves original buffer alone. */ |
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226 | str = (unsigned char *)_malloc_r (ptr, newsize); |
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227 | if (!str) |
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228 | { |
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229 | ptr->_errno = ENOMEM; |
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230 | goto err; |
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231 | } |
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232 | memcpy (str, fp->_bf._base, curpos); |
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233 | fp->_flags = (fp->_flags & ~__SOPT) | __SMBF; |
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234 | } |
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235 | else |
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236 | { |
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237 | str = (unsigned char *)_realloc_r (ptr, fp->_bf._base, |
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238 | newsize); |
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239 | if (!str) { |
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240 | /* Free unneeded buffer. */ |
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241 | _free_r (ptr, fp->_bf._base); |
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242 | /* Ensure correct errno, even if free |
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243 | * changed it. */ |
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244 | ptr->_errno = ENOMEM; |
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245 | goto err; |
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246 | } |
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247 | } |
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248 | fp->_bf._base = str; |
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249 | fp->_p = str + curpos; |
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250 | fp->_bf._size = newsize; |
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251 | w = len; |
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252 | fp->_w = newsize - curpos; |
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253 | } |
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254 | if (len < w) |
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255 | w = len; |
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256 | (void)memmove ((void *) fp->_p, (void *) buf, (size_t) (w)); |
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257 | fp->_w -= w; |
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258 | fp->_p += w; |
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259 | |
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260 | return 0; |
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261 | |
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262 | err: |
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263 | fp->_flags |= __SERR; |
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264 | return EOF; |
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265 | } |
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266 | #endif |
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267 | |
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268 | int |
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269 | __ssprint_r (struct _reent *ptr, |
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270 | FILE *fp, |
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271 | register struct __suio *uio) |
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272 | { |
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273 | register size_t len; |
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274 | register int w; |
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275 | register struct __siov *iov; |
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276 | register const char *p = NULL; |
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277 | |
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278 | iov = uio->uio_iov; |
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279 | len = 0; |
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280 | |
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281 | if (uio->uio_resid == 0) { |
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282 | uio->uio_iovcnt = 0; |
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283 | return (0); |
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284 | } |
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285 | |
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286 | do { |
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287 | while (len == 0) { |
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288 | p = iov->iov_base; |
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289 | len = iov->iov_len; |
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290 | iov++; |
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291 | } |
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292 | w = fp->_w; |
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293 | if (len >= w && fp->_flags & (__SMBF | __SOPT)) { |
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294 | /* must be asprintf family */ |
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295 | unsigned char *str; |
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296 | int curpos = (fp->_p - fp->_bf._base); |
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297 | /* Choose a geometric growth factor to avoid |
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298 | * quadratic realloc behavior, but use a rate less |
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299 | * than (1+sqrt(5))/2 to accomodate malloc |
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300 | * overhead. asprintf EXPECTS us to overallocate, so |
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301 | * that it can add a trailing \0 without |
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302 | * reallocating. The new allocation should thus be |
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303 | * max(prev_size*1.5, curpos+len+1). */ |
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304 | int newsize = fp->_bf._size * 3 / 2; |
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305 | if (newsize < curpos + len + 1) |
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306 | newsize = curpos + len + 1; |
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307 | if (fp->_flags & __SOPT) |
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308 | { |
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309 | /* asnprintf leaves original buffer alone. */ |
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310 | str = (unsigned char *)_malloc_r (ptr, newsize); |
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311 | if (!str) |
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312 | { |
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313 | ptr->_errno = ENOMEM; |
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314 | goto err; |
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315 | } |
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316 | memcpy (str, fp->_bf._base, curpos); |
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317 | fp->_flags = (fp->_flags & ~__SOPT) | __SMBF; |
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318 | } |
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319 | else |
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320 | { |
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321 | str = (unsigned char *)_realloc_r (ptr, fp->_bf._base, |
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322 | newsize); |
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323 | if (!str) { |
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324 | /* Free unneeded buffer. */ |
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325 | _free_r (ptr, fp->_bf._base); |
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326 | /* Ensure correct errno, even if free |
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327 | * changed it. */ |
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328 | ptr->_errno = ENOMEM; |
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329 | goto err; |
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330 | } |
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331 | } |
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332 | fp->_bf._base = str; |
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333 | fp->_p = str + curpos; |
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334 | fp->_bf._size = newsize; |
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335 | w = len; |
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336 | fp->_w = newsize - curpos; |
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337 | } |
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338 | if (len < w) |
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339 | w = len; |
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340 | (void)memmove ((void *) fp->_p, (void *) p, (size_t) (w)); |
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341 | fp->_w -= w; |
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342 | fp->_p += w; |
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343 | w = len; /* pretend we copied all */ |
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344 | p += w; |
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345 | len -= w; |
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346 | } while ((uio->uio_resid -= w) != 0); |
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347 | |
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348 | uio->uio_resid = 0; |
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349 | uio->uio_iovcnt = 0; |
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350 | return 0; |
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351 | |
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352 | err: |
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353 | fp->_flags |= __SERR; |
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354 | uio->uio_resid = 0; |
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355 | uio->uio_iovcnt = 0; |
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356 | return EOF; |
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357 | } |
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358 | #else /* !INTEGER_ONLY */ |
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359 | #ifndef _FVWRITE_IN_STREAMIO |
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360 | int __ssputs_r (struct _reent *, FILE *, const char *, size_t); |
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361 | #endif |
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362 | int __ssprint_r (struct _reent *, FILE *, register struct __suio *); |
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363 | #endif /* !INTEGER_ONLY */ |
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364 | |
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365 | #else /* !STRING_ONLY */ |
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366 | #ifdef INTEGER_ONLY |
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367 | |
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368 | #ifndef _FVWRITE_IN_STREAMIO |
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369 | int |
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370 | __sfputs_r (struct _reent *ptr, |
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371 | FILE *fp, |
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372 | const char *buf, |
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373 | size_t len) |
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374 | { |
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375 | register int i; |
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376 | |
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377 | #ifdef _WIDE_ORIENT |
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378 | if (fp->_flags2 & __SWID) { |
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379 | wchar_t *p; |
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380 | |
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381 | p = (wchar_t *) buf; |
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382 | for (i = 0; i < (len / sizeof (wchar_t)); i++) { |
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383 | if (_fputwc_r (ptr, p[i], fp) == WEOF) |
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384 | return -1; |
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385 | } |
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386 | } else { |
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387 | #else |
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388 | { |
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389 | #endif |
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390 | for (i = 0; i < len; i++) { |
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391 | if (_fputc_r (ptr, buf[i], fp) == EOF) |
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392 | return -1; |
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393 | } |
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394 | } |
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395 | return (0); |
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396 | } |
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397 | #endif |
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398 | /* |
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399 | * Flush out all the vectors defined by the given uio, |
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400 | * then reset it so that it can be reused. |
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401 | */ |
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402 | int |
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403 | __sprint_r (struct _reent *ptr, |
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404 | FILE *fp, |
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405 | register struct __suio *uio) |
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406 | { |
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407 | register int err = 0; |
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408 | |
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409 | if (uio->uio_resid == 0) { |
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410 | uio->uio_iovcnt = 0; |
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411 | return (0); |
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412 | } |
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413 | #ifdef _WIDE_ORIENT |
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414 | if (fp->_flags2 & __SWID) { |
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415 | struct __siov *iov; |
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416 | wchar_t *p; |
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417 | int i, len; |
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418 | |
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419 | iov = uio->uio_iov; |
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420 | for (; uio->uio_resid != 0; |
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421 | uio->uio_resid -= len * sizeof (wchar_t), iov++) { |
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422 | p = (wchar_t *) iov->iov_base; |
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423 | len = iov->iov_len / sizeof (wchar_t); |
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424 | for (i = 0; i < len; i++) { |
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425 | if (_fputwc_r (ptr, p[i], fp) == WEOF) { |
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426 | err = -1; |
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427 | goto out; |
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428 | } |
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429 | } |
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430 | } |
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431 | } else |
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432 | #endif |
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433 | err = __sfvwrite_r(ptr, fp, uio); |
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434 | out: |
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435 | uio->uio_resid = 0; |
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436 | uio->uio_iovcnt = 0; |
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437 | return (err); |
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438 | } |
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439 | #else /* !INTEGER_ONLY */ |
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440 | #ifndef _FVWRITE_IN_STREAMIO |
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441 | int __sfputs_r (struct _reent *, FILE *, const char *buf, size_t); |
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442 | #endif |
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443 | int __sprint_r (struct _reent *, FILE *, register struct __suio *); |
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444 | #endif /* !INTEGER_ONLY */ |
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445 | |
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446 | #ifdef _UNBUF_STREAM_OPT |
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447 | /* |
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448 | * Helper function for `fprintf to unbuffered unix file': creates a |
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449 | * temporary buffer. We only work on write-only files; this avoids |
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450 | * worries about ungetc buffers and so forth. |
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451 | * |
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452 | * Make sure to avoid inlining. |
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453 | */ |
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454 | _NOINLINE_STATIC int |
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455 | __sbprintf (struct _reent *rptr, |
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456 | register FILE *fp, |
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457 | const char *fmt, |
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458 | va_list ap) |
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459 | { |
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460 | int ret; |
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461 | FILE fake; |
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462 | unsigned char buf[BUFSIZ]; |
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463 | |
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464 | /* copy the important variables */ |
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465 | fake._flags = fp->_flags & ~__SNBF; |
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466 | fake._flags2 = fp->_flags2; |
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467 | fake._file = fp->_file; |
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468 | fake._cookie = fp->_cookie; |
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469 | fake._write = fp->_write; |
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470 | |
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471 | /* set up the buffer */ |
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472 | fake._bf._base = fake._p = buf; |
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473 | fake._bf._size = fake._w = sizeof (buf); |
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474 | fake._lbfsize = 0; /* not actually used, but Just In Case */ |
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475 | #ifndef __SINGLE_THREAD__ |
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476 | __lock_init_recursive (fake._lock); |
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477 | #endif |
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478 | |
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479 | /* do the work, then copy any error status */ |
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480 | ret = _VFPRINTF_R (rptr, &fake, fmt, ap); |
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481 | if (ret >= 0 && _fflush_r (rptr, &fake)) |
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482 | ret = EOF; |
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483 | if (fake._flags & __SERR) |
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484 | fp->_flags |= __SERR; |
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485 | |
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486 | #ifndef __SINGLE_THREAD__ |
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487 | __lock_close_recursive (fake._lock); |
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488 | #endif |
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489 | return (ret); |
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490 | } |
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491 | #endif /* _UNBUF_STREAM_OPT */ |
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492 | #endif /* !STRING_ONLY */ |
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493 | |
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494 | |
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495 | #if defined (FLOATING_POINT) || defined (_WANT_IO_C99_FORMATS) |
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496 | # include <locale.h> |
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497 | #endif |
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498 | #ifdef FLOATING_POINT |
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499 | # include <math.h> |
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500 | |
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501 | /* For %La, an exponent of 15 bits occupies the exponent character, a |
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502 | sign, and up to 5 digits. */ |
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503 | # define MAXEXPLEN 7 |
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504 | # define DEFPREC 6 |
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505 | |
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506 | # ifdef _NO_LONGDBL |
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507 | |
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508 | extern char *_dtoa_r (struct _reent *, double, int, |
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509 | int, int *, int *, char **); |
---|
510 | |
---|
511 | # define _PRINTF_FLOAT_TYPE double |
---|
512 | # define _DTOA_R _dtoa_r |
---|
513 | # define FREXP frexp |
---|
514 | |
---|
515 | # else /* !_NO_LONGDBL */ |
---|
516 | |
---|
517 | extern char *_ldtoa_r (struct _reent *, _LONG_DOUBLE, int, |
---|
518 | int, int *, int *, char **); |
---|
519 | |
---|
520 | extern int _ldcheck (_LONG_DOUBLE *); |
---|
521 | |
---|
522 | # define _PRINTF_FLOAT_TYPE _LONG_DOUBLE |
---|
523 | # define _DTOA_R _ldtoa_r |
---|
524 | /* FIXME - frexpl is not yet supported; and cvt infloops if (double)f |
---|
525 | converts a finite value into infinity. */ |
---|
526 | /* # define FREXP frexpl */ |
---|
527 | # define FREXP(f,e) ((_LONG_DOUBLE) frexp ((double)f, e)) |
---|
528 | # endif /* !_NO_LONGDBL */ |
---|
529 | |
---|
530 | static char *cvt(struct _reent *, _PRINTF_FLOAT_TYPE, int, int, char *, int *, |
---|
531 | int, int *, char *); |
---|
532 | |
---|
533 | static int exponent(char *, int, int); |
---|
534 | |
---|
535 | #endif /* FLOATING_POINT */ |
---|
536 | |
---|
537 | /* BUF must be big enough for the maximum %#llo (assuming long long is |
---|
538 | at most 64 bits, this would be 23 characters), the maximum |
---|
539 | multibyte character %C, and the maximum default precision of %La |
---|
540 | (assuming long double is at most 128 bits with 113 bits of |
---|
541 | mantissa, this would be 29 characters). %e, %f, and %g use |
---|
542 | reentrant storage shared with mprec. All other formats that use |
---|
543 | buf get by with fewer characters. Making BUF slightly bigger |
---|
544 | reduces the need for malloc in %.*a and %S, when large precision or |
---|
545 | long strings are processed. |
---|
546 | The bigger size of 100 bytes is used on systems which allow number |
---|
547 | strings using the locale's grouping character. Since that's a multibyte |
---|
548 | value, we should use a conservative value. |
---|
549 | */ |
---|
550 | #ifdef _WANT_IO_C99_FORMATS |
---|
551 | #define BUF 100 |
---|
552 | #else |
---|
553 | #define BUF 40 |
---|
554 | #endif |
---|
555 | #if defined _MB_CAPABLE && MB_LEN_MAX > BUF |
---|
556 | # undef BUF |
---|
557 | # define BUF MB_LEN_MAX |
---|
558 | #endif |
---|
559 | |
---|
560 | #ifndef _NO_LONGLONG |
---|
561 | # define quad_t long long |
---|
562 | # define u_quad_t unsigned long long |
---|
563 | #else |
---|
564 | # define quad_t long |
---|
565 | # define u_quad_t unsigned long |
---|
566 | #endif |
---|
567 | |
---|
568 | typedef quad_t * quad_ptr_t; |
---|
569 | typedef void *void_ptr_t; |
---|
570 | typedef char * char_ptr_t; |
---|
571 | typedef long * long_ptr_t; |
---|
572 | typedef int * int_ptr_t; |
---|
573 | typedef short * short_ptr_t; |
---|
574 | |
---|
575 | #ifndef _NO_POS_ARGS |
---|
576 | # ifdef NL_ARGMAX |
---|
577 | # define MAX_POS_ARGS NL_ARGMAX |
---|
578 | # else |
---|
579 | # define MAX_POS_ARGS 32 |
---|
580 | # endif |
---|
581 | |
---|
582 | union arg_val |
---|
583 | { |
---|
584 | int val_int; |
---|
585 | u_int val_u_int; |
---|
586 | long val_long; |
---|
587 | u_long val_u_long; |
---|
588 | float val_float; |
---|
589 | double val_double; |
---|
590 | _LONG_DOUBLE val__LONG_DOUBLE; |
---|
591 | int_ptr_t val_int_ptr_t; |
---|
592 | short_ptr_t val_short_ptr_t; |
---|
593 | long_ptr_t val_long_ptr_t; |
---|
594 | char_ptr_t val_char_ptr_t; |
---|
595 | quad_ptr_t val_quad_ptr_t; |
---|
596 | void_ptr_t val_void_ptr_t; |
---|
597 | quad_t val_quad_t; |
---|
598 | u_quad_t val_u_quad_t; |
---|
599 | wint_t val_wint_t; |
---|
600 | }; |
---|
601 | |
---|
602 | static union arg_val * |
---|
603 | get_arg (struct _reent *data, int n, char *fmt, |
---|
604 | va_list *ap, int *numargs, union arg_val *args, |
---|
605 | int *arg_type, char **last_fmt); |
---|
606 | #endif /* !_NO_POS_ARGS */ |
---|
607 | |
---|
608 | /* |
---|
609 | * Macros for converting digits to letters and vice versa |
---|
610 | */ |
---|
611 | #define to_digit(c) ((c) - '0') |
---|
612 | #define is_digit(c) ((unsigned)to_digit (c) <= 9) |
---|
613 | #define to_char(n) ((n) + '0') |
---|
614 | |
---|
615 | /* |
---|
616 | * Flags used during conversion. |
---|
617 | */ |
---|
618 | #define ALT 0x001 /* alternate form */ |
---|
619 | #define HEXPREFIX 0x002 /* add 0x or 0X prefix */ |
---|
620 | #define LADJUST 0x004 /* left adjustment */ |
---|
621 | #define LONGDBL 0x008 /* long double */ |
---|
622 | #define LONGINT 0x010 /* long integer */ |
---|
623 | #ifndef _NO_LONGLONG |
---|
624 | # define QUADINT 0x020 /* quad integer */ |
---|
625 | #else /* ifdef _NO_LONGLONG, make QUADINT equivalent to LONGINT, so |
---|
626 | that %lld behaves the same as %ld, not as %d, as expected if: |
---|
627 | sizeof (long long) = sizeof long > sizeof int */ |
---|
628 | # define QUADINT LONGINT |
---|
629 | #endif |
---|
630 | #define SHORTINT 0x040 /* short integer */ |
---|
631 | #define ZEROPAD 0x080 /* zero (as opposed to blank) pad */ |
---|
632 | #define FPT 0x100 /* Floating point number */ |
---|
633 | #ifdef _WANT_IO_C99_FORMATS |
---|
634 | # define CHARINT 0x200 /* char as integer */ |
---|
635 | #else /* define as 0, to make SARG and UARG occupy fewer instructions */ |
---|
636 | # define CHARINT 0 |
---|
637 | #endif |
---|
638 | #ifdef _WANT_IO_C99_FORMATS |
---|
639 | # define GROUPING 0x400 /* use grouping ("'" flag) */ |
---|
640 | #endif |
---|
641 | |
---|
642 | int _VFPRINTF_R (struct _reent *, FILE *, const char *, va_list); |
---|
643 | |
---|
644 | #ifndef STRING_ONLY |
---|
645 | int |
---|
646 | VFPRINTF (FILE * fp, |
---|
647 | const char *fmt0, |
---|
648 | va_list ap) |
---|
649 | { |
---|
650 | int result; |
---|
651 | result = _VFPRINTF_R (_REENT, fp, fmt0, ap); |
---|
652 | return result; |
---|
653 | } |
---|
654 | #endif /* STRING_ONLY */ |
---|
655 | |
---|
656 | int |
---|
657 | _VFPRINTF_R (struct _reent *data, |
---|
658 | FILE * fp, |
---|
659 | const char *fmt0, |
---|
660 | va_list ap) |
---|
661 | { |
---|
662 | register char *fmt; /* format string */ |
---|
663 | register int ch; /* character from fmt */ |
---|
664 | register int n, m; /* handy integers (short term usage) */ |
---|
665 | register char *cp; /* handy char pointer (short term usage) */ |
---|
666 | register int flags; /* flags as above */ |
---|
667 | char *fmt_anchor; /* current format spec being processed */ |
---|
668 | #ifndef _NO_POS_ARGS |
---|
669 | int N; /* arg number */ |
---|
670 | int arg_index; /* index into args processed directly */ |
---|
671 | int numargs; /* number of varargs read */ |
---|
672 | char *saved_fmt; /* saved fmt pointer */ |
---|
673 | union arg_val args[MAX_POS_ARGS]; |
---|
674 | int arg_type[MAX_POS_ARGS]; |
---|
675 | int is_pos_arg; /* is current format positional? */ |
---|
676 | int old_is_pos_arg; /* is current format positional? */ |
---|
677 | #endif |
---|
678 | int ret; /* return value accumulator */ |
---|
679 | int width; /* width from format (%8d), or 0 */ |
---|
680 | int prec; /* precision from format (%.3d), or -1 */ |
---|
681 | char sign; /* sign prefix (' ', '+', '-', or \0) */ |
---|
682 | #ifdef _WANT_IO_C99_FORMATS |
---|
683 | /* locale specific numeric grouping */ |
---|
684 | char *thousands_sep = NULL; |
---|
685 | size_t thsnd_len = 0; |
---|
686 | const char *grouping = NULL; |
---|
687 | #endif |
---|
688 | #ifdef FLOATING_POINT |
---|
689 | char *decimal_point = _localeconv_r (data)->decimal_point; |
---|
690 | size_t decp_len = strlen (decimal_point); |
---|
691 | char softsign; /* temporary negative sign for floats */ |
---|
692 | union { int i; _PRINTF_FLOAT_TYPE fp; } _double_ = {0}; |
---|
693 | # define _fpvalue (_double_.fp) |
---|
694 | int expt; /* integer value of exponent */ |
---|
695 | int expsize = 0; /* character count for expstr */ |
---|
696 | char expstr[MAXEXPLEN]; /* buffer for exponent string */ |
---|
697 | int lead; /* sig figs before decimal or group sep */ |
---|
698 | #endif /* FLOATING_POINT */ |
---|
699 | #if defined (FLOATING_POINT) || defined (_WANT_IO_C99_FORMATS) |
---|
700 | int ndig = 0; /* actual number of digits returned by cvt */ |
---|
701 | #endif |
---|
702 | #if defined (FLOATING_POINT) && defined (_WANT_IO_C99_FORMATS) |
---|
703 | int nseps; /* number of group separators with ' */ |
---|
704 | int nrepeats; /* number of repeats of the last group */ |
---|
705 | #endif |
---|
706 | u_quad_t _uquad; /* integer arguments %[diouxX] */ |
---|
707 | enum { OCT, DEC, HEX } base;/* base for [diouxX] conversion */ |
---|
708 | int dprec; /* a copy of prec if [diouxX], 0 otherwise */ |
---|
709 | int realsz; /* field size expanded by dprec */ |
---|
710 | int size; /* size of converted field or string */ |
---|
711 | char *xdigs = NULL; /* digits for [xX] conversion */ |
---|
712 | #ifdef _FVWRITE_IN_STREAMIO |
---|
713 | #define NIOV 8 |
---|
714 | struct __suio uio; /* output information: summary */ |
---|
715 | struct __siov iov[NIOV];/* ... and individual io vectors */ |
---|
716 | register struct __siov *iovp;/* for PRINT macro */ |
---|
717 | #endif |
---|
718 | char buf[BUF]; /* space for %c, %S, %[diouxX], %[aA] */ |
---|
719 | char ox[2]; /* space for 0x hex-prefix */ |
---|
720 | #ifdef _MB_CAPABLE |
---|
721 | wchar_t wc; |
---|
722 | mbstate_t state; /* mbtowc calls from library must not change state */ |
---|
723 | #endif |
---|
724 | char *malloc_buf = NULL;/* handy pointer for malloced buffers */ |
---|
725 | |
---|
726 | /* |
---|
727 | * Choose PADSIZE to trade efficiency vs. size. If larger printf |
---|
728 | * fields occur frequently, increase PADSIZE and make the initialisers |
---|
729 | * below longer. |
---|
730 | */ |
---|
731 | #define PADSIZE 16 /* pad chunk size */ |
---|
732 | static const char blanks[PADSIZE] = |
---|
733 | {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; |
---|
734 | static const char zeroes[PADSIZE] = |
---|
735 | {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; |
---|
736 | |
---|
737 | #ifdef _MB_CAPABLE |
---|
738 | memset (&state, '\0', sizeof (state)); |
---|
739 | #endif |
---|
740 | /* |
---|
741 | * BEWARE, these `goto error' on error, and PAD uses `n'. |
---|
742 | */ |
---|
743 | #ifdef _FVWRITE_IN_STREAMIO |
---|
744 | #define PRINT(ptr, len) { \ |
---|
745 | iovp->iov_base = (ptr); \ |
---|
746 | iovp->iov_len = (len); \ |
---|
747 | uio.uio_resid += (len); \ |
---|
748 | iovp++; \ |
---|
749 | if (++uio.uio_iovcnt >= NIOV) { \ |
---|
750 | if (__SPRINT(data, fp, &uio)) \ |
---|
751 | goto error; \ |
---|
752 | iovp = iov; \ |
---|
753 | } \ |
---|
754 | } |
---|
755 | #define PAD(howmany, with) { \ |
---|
756 | if ((n = (howmany)) > 0) { \ |
---|
757 | while (n > PADSIZE) { \ |
---|
758 | PRINT (with, PADSIZE); \ |
---|
759 | n -= PADSIZE; \ |
---|
760 | } \ |
---|
761 | PRINT (with, n); \ |
---|
762 | } \ |
---|
763 | } |
---|
764 | #define PRINTANDPAD(p, ep, len, with) { \ |
---|
765 | int n = (ep) - (p); \ |
---|
766 | if (n > (len)) \ |
---|
767 | n = (len); \ |
---|
768 | if (n > 0) \ |
---|
769 | PRINT((p), n); \ |
---|
770 | PAD((len) - (n > 0 ? n : 0), (with)); \ |
---|
771 | } |
---|
772 | #define FLUSH() { \ |
---|
773 | if (uio.uio_resid && __SPRINT(data, fp, &uio)) \ |
---|
774 | goto error; \ |
---|
775 | uio.uio_iovcnt = 0; \ |
---|
776 | iovp = iov; \ |
---|
777 | } |
---|
778 | #else |
---|
779 | #define PRINT(ptr, len) { \ |
---|
780 | if (__SPRINT (data, fp, (ptr), (len)) == EOF) \ |
---|
781 | goto error; \ |
---|
782 | } |
---|
783 | #define PAD(howmany, with) { \ |
---|
784 | if ((n = (howmany)) > 0) { \ |
---|
785 | while (n > PADSIZE) { \ |
---|
786 | PRINT (with, PADSIZE); \ |
---|
787 | n -= PADSIZE; \ |
---|
788 | } \ |
---|
789 | PRINT (with, n); \ |
---|
790 | } \ |
---|
791 | } |
---|
792 | #define PRINTANDPAD(p, ep, len, with) { \ |
---|
793 | int n = (ep) - (p); \ |
---|
794 | if (n > (len)) \ |
---|
795 | n = (len); \ |
---|
796 | if (n > 0) \ |
---|
797 | PRINT((p), n); \ |
---|
798 | PAD((len) - (n > 0 ? n : 0), (with)); \ |
---|
799 | } |
---|
800 | #define FLUSH() |
---|
801 | #endif |
---|
802 | |
---|
803 | /* Macros to support positional arguments */ |
---|
804 | #ifndef _NO_POS_ARGS |
---|
805 | # define GET_ARG(n, ap, type) \ |
---|
806 | (is_pos_arg \ |
---|
807 | ? (n < numargs \ |
---|
808 | ? args[n].val_##type \ |
---|
809 | : get_arg (data, n, fmt_anchor, &ap, &numargs, args, \ |
---|
810 | arg_type, &saved_fmt)->val_##type) \ |
---|
811 | : (arg_index++ < numargs \ |
---|
812 | ? args[n].val_##type \ |
---|
813 | : (numargs < MAX_POS_ARGS \ |
---|
814 | ? args[numargs++].val_##type = va_arg (ap, type) \ |
---|
815 | : va_arg (ap, type)))) |
---|
816 | #else |
---|
817 | # define GET_ARG(n, ap, type) (va_arg (ap, type)) |
---|
818 | #endif |
---|
819 | |
---|
820 | /* |
---|
821 | * To extend shorts properly, we need both signed and unsigned |
---|
822 | * argument extraction methods. |
---|
823 | */ |
---|
824 | #ifndef _NO_LONGLONG |
---|
825 | #define SARG() \ |
---|
826 | (flags&QUADINT ? GET_ARG (N, ap, quad_t) : \ |
---|
827 | flags&LONGINT ? GET_ARG (N, ap, long) : \ |
---|
828 | flags&SHORTINT ? (long)(short)GET_ARG (N, ap, int) : \ |
---|
829 | flags&CHARINT ? (long)(signed char)GET_ARG (N, ap, int) : \ |
---|
830 | (long)GET_ARG (N, ap, int)) |
---|
831 | #define UARG() \ |
---|
832 | (flags&QUADINT ? GET_ARG (N, ap, u_quad_t) : \ |
---|
833 | flags&LONGINT ? GET_ARG (N, ap, u_long) : \ |
---|
834 | flags&SHORTINT ? (u_long)(u_short)GET_ARG (N, ap, int) : \ |
---|
835 | flags&CHARINT ? (u_long)(unsigned char)GET_ARG (N, ap, int) : \ |
---|
836 | (u_long)GET_ARG (N, ap, u_int)) |
---|
837 | #else |
---|
838 | #define SARG() \ |
---|
839 | (flags&LONGINT ? GET_ARG (N, ap, long) : \ |
---|
840 | flags&SHORTINT ? (long)(short)GET_ARG (N, ap, int) : \ |
---|
841 | flags&CHARINT ? (long)(signed char)GET_ARG (N, ap, int) : \ |
---|
842 | (long)GET_ARG (N, ap, int)) |
---|
843 | #define UARG() \ |
---|
844 | (flags&LONGINT ? GET_ARG (N, ap, u_long) : \ |
---|
845 | flags&SHORTINT ? (u_long)(u_short)GET_ARG (N, ap, int) : \ |
---|
846 | flags&CHARINT ? (u_long)(unsigned char)GET_ARG (N, ap, int) : \ |
---|
847 | (u_long)GET_ARG (N, ap, u_int)) |
---|
848 | #endif |
---|
849 | |
---|
850 | #ifndef STRING_ONLY |
---|
851 | /* Initialize std streams if not dealing with sprintf family. */ |
---|
852 | CHECK_INIT (data, fp); |
---|
853 | _newlib_flockfile_start (fp); |
---|
854 | |
---|
855 | ORIENT(fp, -1); |
---|
856 | |
---|
857 | /* sorry, fprintf(read_only_file, "") returns EOF, not 0 */ |
---|
858 | if (cantwrite (data, fp)) { |
---|
859 | _newlib_flockfile_exit (fp); |
---|
860 | return (EOF); |
---|
861 | } |
---|
862 | |
---|
863 | #ifdef _UNBUF_STREAM_OPT |
---|
864 | /* optimise fprintf(stderr) (and other unbuffered Unix files) */ |
---|
865 | if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && |
---|
866 | fp->_file >= 0) { |
---|
867 | _newlib_flockfile_exit (fp); |
---|
868 | return (__sbprintf (data, fp, fmt0, ap)); |
---|
869 | } |
---|
870 | #endif |
---|
871 | #else /* STRING_ONLY */ |
---|
872 | /* Create initial buffer if we are called by asprintf family. */ |
---|
873 | if (fp->_flags & __SMBF && !fp->_bf._base) |
---|
874 | { |
---|
875 | fp->_bf._base = fp->_p = _malloc_r (data, 64); |
---|
876 | if (!fp->_p) |
---|
877 | { |
---|
878 | data->_errno = ENOMEM; |
---|
879 | return EOF; |
---|
880 | } |
---|
881 | fp->_bf._size = 64; |
---|
882 | } |
---|
883 | #endif /* STRING_ONLY */ |
---|
884 | |
---|
885 | fmt = (char *)fmt0; |
---|
886 | #ifdef _FVWRITE_IN_STREAMIO |
---|
887 | uio.uio_iov = iovp = iov; |
---|
888 | uio.uio_resid = 0; |
---|
889 | uio.uio_iovcnt = 0; |
---|
890 | #endif |
---|
891 | ret = 0; |
---|
892 | #ifndef _NO_POS_ARGS |
---|
893 | arg_index = 0; |
---|
894 | saved_fmt = NULL; |
---|
895 | arg_type[0] = -1; |
---|
896 | numargs = 0; |
---|
897 | is_pos_arg = 0; |
---|
898 | #endif |
---|
899 | |
---|
900 | /* |
---|
901 | * Scan the format for conversions (`%' character). |
---|
902 | */ |
---|
903 | for (;;) { |
---|
904 | cp = fmt; |
---|
905 | #ifdef _MB_CAPABLE |
---|
906 | while ((n = __MBTOWC (data, &wc, fmt, MB_CUR_MAX, |
---|
907 | &state)) != 0) { |
---|
908 | if (n < 0) { |
---|
909 | /* Wave invalid chars through. */ |
---|
910 | memset (&state, 0, sizeof state); |
---|
911 | n = 1; |
---|
912 | } |
---|
913 | else if (wc == '%') |
---|
914 | break; |
---|
915 | fmt += n; |
---|
916 | } |
---|
917 | #else |
---|
918 | while (*fmt != '\0' && *fmt != '%') |
---|
919 | fmt += 1; |
---|
920 | #endif |
---|
921 | if ((m = fmt - cp) != 0) { |
---|
922 | PRINT (cp, m); |
---|
923 | ret += m; |
---|
924 | } |
---|
925 | #ifdef _MB_CAPABLE |
---|
926 | if (n <= 0) |
---|
927 | goto done; |
---|
928 | #else |
---|
929 | if (*fmt == '\0') |
---|
930 | goto done; |
---|
931 | #endif |
---|
932 | fmt_anchor = fmt; |
---|
933 | fmt++; /* skip over '%' */ |
---|
934 | |
---|
935 | flags = 0; |
---|
936 | dprec = 0; |
---|
937 | width = 0; |
---|
938 | prec = -1; |
---|
939 | sign = '\0'; |
---|
940 | #ifdef FLOATING_POINT |
---|
941 | lead = 0; |
---|
942 | #ifdef _WANT_IO_C99_FORMATS |
---|
943 | nseps = nrepeats = 0; |
---|
944 | #endif |
---|
945 | #endif |
---|
946 | #ifndef _NO_POS_ARGS |
---|
947 | N = arg_index; |
---|
948 | is_pos_arg = 0; |
---|
949 | #endif |
---|
950 | |
---|
951 | rflag: ch = *fmt++; |
---|
952 | reswitch: switch (ch) { |
---|
953 | #ifdef _WANT_IO_C99_FORMATS |
---|
954 | case '\'': |
---|
955 | thousands_sep = _localeconv_r (data)->thousands_sep; |
---|
956 | thsnd_len = strlen (thousands_sep); |
---|
957 | grouping = _localeconv_r (data)->grouping; |
---|
958 | if (thsnd_len > 0 && grouping && *grouping) |
---|
959 | flags |= GROUPING; |
---|
960 | goto rflag; |
---|
961 | #endif |
---|
962 | case ' ': |
---|
963 | /* |
---|
964 | * ``If the space and + flags both appear, the space |
---|
965 | * flag will be ignored.'' |
---|
966 | * -- ANSI X3J11 |
---|
967 | */ |
---|
968 | if (!sign) |
---|
969 | sign = ' '; |
---|
970 | goto rflag; |
---|
971 | case '#': |
---|
972 | flags |= ALT; |
---|
973 | goto rflag; |
---|
974 | case '*': |
---|
975 | #ifndef _NO_POS_ARGS |
---|
976 | /* we must check for positional arg used for dynamic width */ |
---|
977 | n = N; |
---|
978 | old_is_pos_arg = is_pos_arg; |
---|
979 | is_pos_arg = 0; |
---|
980 | if (is_digit (*fmt)) { |
---|
981 | char *old_fmt = fmt; |
---|
982 | |
---|
983 | n = 0; |
---|
984 | ch = *fmt++; |
---|
985 | do { |
---|
986 | n = 10 * n + to_digit (ch); |
---|
987 | ch = *fmt++; |
---|
988 | } while (is_digit (ch)); |
---|
989 | |
---|
990 | if (ch == '$') { |
---|
991 | if (n <= MAX_POS_ARGS) { |
---|
992 | n -= 1; |
---|
993 | is_pos_arg = 1; |
---|
994 | } |
---|
995 | else |
---|
996 | goto error; |
---|
997 | } |
---|
998 | else { |
---|
999 | fmt = old_fmt; |
---|
1000 | goto rflag; |
---|
1001 | } |
---|
1002 | } |
---|
1003 | #endif /* !_NO_POS_ARGS */ |
---|
1004 | |
---|
1005 | /* |
---|
1006 | * ``A negative field width argument is taken as a |
---|
1007 | * - flag followed by a positive field width.'' |
---|
1008 | * -- ANSI X3J11 |
---|
1009 | * They don't exclude field widths read from args. |
---|
1010 | */ |
---|
1011 | width = GET_ARG (n, ap, int); |
---|
1012 | #ifndef _NO_POS_ARGS |
---|
1013 | is_pos_arg = old_is_pos_arg; |
---|
1014 | #endif |
---|
1015 | if (width >= 0) |
---|
1016 | goto rflag; |
---|
1017 | width = -width; |
---|
1018 | /* FALLTHROUGH */ |
---|
1019 | case '-': |
---|
1020 | flags |= LADJUST; |
---|
1021 | goto rflag; |
---|
1022 | case '+': |
---|
1023 | sign = '+'; |
---|
1024 | goto rflag; |
---|
1025 | case '.': |
---|
1026 | if ((ch = *fmt++) == '*') { |
---|
1027 | #ifndef _NO_POS_ARGS |
---|
1028 | /* we must check for positional arg used for dynamic width */ |
---|
1029 | n = N; |
---|
1030 | old_is_pos_arg = is_pos_arg; |
---|
1031 | is_pos_arg = 0; |
---|
1032 | if (is_digit (*fmt)) { |
---|
1033 | char *old_fmt = fmt; |
---|
1034 | |
---|
1035 | n = 0; |
---|
1036 | ch = *fmt++; |
---|
1037 | do { |
---|
1038 | n = 10 * n + to_digit (ch); |
---|
1039 | ch = *fmt++; |
---|
1040 | } while (is_digit (ch)); |
---|
1041 | |
---|
1042 | if (ch == '$') { |
---|
1043 | if (n <= MAX_POS_ARGS) { |
---|
1044 | n -= 1; |
---|
1045 | is_pos_arg = 1; |
---|
1046 | } |
---|
1047 | else |
---|
1048 | goto error; |
---|
1049 | } |
---|
1050 | else { |
---|
1051 | fmt = old_fmt; |
---|
1052 | goto rflag; |
---|
1053 | } |
---|
1054 | } |
---|
1055 | #endif /* !_NO_POS_ARGS */ |
---|
1056 | prec = GET_ARG (n, ap, int); |
---|
1057 | #ifndef _NO_POS_ARGS |
---|
1058 | is_pos_arg = old_is_pos_arg; |
---|
1059 | #endif |
---|
1060 | if (prec < 0) |
---|
1061 | prec = -1; |
---|
1062 | goto rflag; |
---|
1063 | } |
---|
1064 | n = 0; |
---|
1065 | while (is_digit (ch)) { |
---|
1066 | n = 10 * n + to_digit (ch); |
---|
1067 | ch = *fmt++; |
---|
1068 | } |
---|
1069 | prec = n < 0 ? -1 : n; |
---|
1070 | goto reswitch; |
---|
1071 | case '0': |
---|
1072 | /* |
---|
1073 | * ``Note that 0 is taken as a flag, not as the |
---|
1074 | * beginning of a field width.'' |
---|
1075 | * -- ANSI X3J11 |
---|
1076 | */ |
---|
1077 | flags |= ZEROPAD; |
---|
1078 | goto rflag; |
---|
1079 | case '1': case '2': case '3': case '4': |
---|
1080 | case '5': case '6': case '7': case '8': case '9': |
---|
1081 | n = 0; |
---|
1082 | do { |
---|
1083 | n = 10 * n + to_digit (ch); |
---|
1084 | ch = *fmt++; |
---|
1085 | } while (is_digit (ch)); |
---|
1086 | #ifndef _NO_POS_ARGS |
---|
1087 | if (ch == '$') { |
---|
1088 | if (n <= MAX_POS_ARGS) { |
---|
1089 | N = n - 1; |
---|
1090 | is_pos_arg = 1; |
---|
1091 | goto rflag; |
---|
1092 | } |
---|
1093 | else |
---|
1094 | goto error; |
---|
1095 | } |
---|
1096 | #endif /* !_NO_POS_ARGS */ |
---|
1097 | width = n; |
---|
1098 | goto reswitch; |
---|
1099 | #ifdef FLOATING_POINT |
---|
1100 | case 'L': |
---|
1101 | flags |= LONGDBL; |
---|
1102 | goto rflag; |
---|
1103 | #endif |
---|
1104 | case 'h': |
---|
1105 | #ifdef _WANT_IO_C99_FORMATS |
---|
1106 | if (*fmt == 'h') { |
---|
1107 | fmt++; |
---|
1108 | flags |= CHARINT; |
---|
1109 | } else |
---|
1110 | #endif |
---|
1111 | flags |= SHORTINT; |
---|
1112 | goto rflag; |
---|
1113 | case 'l': |
---|
1114 | #if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG |
---|
1115 | if (*fmt == 'l') { |
---|
1116 | fmt++; |
---|
1117 | flags |= QUADINT; |
---|
1118 | } else |
---|
1119 | #endif |
---|
1120 | flags |= LONGINT; |
---|
1121 | goto rflag; |
---|
1122 | case 'q': /* extension */ |
---|
1123 | flags |= QUADINT; |
---|
1124 | goto rflag; |
---|
1125 | #ifdef _WANT_IO_C99_FORMATS |
---|
1126 | case 'j': |
---|
1127 | if (sizeof (intmax_t) == sizeof (long)) |
---|
1128 | flags |= LONGINT; |
---|
1129 | else |
---|
1130 | flags |= QUADINT; |
---|
1131 | goto rflag; |
---|
1132 | case 'z': |
---|
1133 | if (sizeof (size_t) < sizeof (int)) |
---|
1134 | /* POSIX states size_t is 16 or more bits, as is short. */ |
---|
1135 | flags |= SHORTINT; |
---|
1136 | else if (sizeof (size_t) == sizeof (int)) |
---|
1137 | /* no flag needed */; |
---|
1138 | else if (sizeof (size_t) <= sizeof (long)) |
---|
1139 | flags |= LONGINT; |
---|
1140 | else |
---|
1141 | /* POSIX states that at least one programming |
---|
1142 | environment must support size_t no wider than |
---|
1143 | long, but that means other environments can |
---|
1144 | have size_t as wide as long long. */ |
---|
1145 | flags |= QUADINT; |
---|
1146 | goto rflag; |
---|
1147 | case 't': |
---|
1148 | if (sizeof (ptrdiff_t) < sizeof (int)) |
---|
1149 | /* POSIX states ptrdiff_t is 16 or more bits, as |
---|
1150 | is short. */ |
---|
1151 | flags |= SHORTINT; |
---|
1152 | else if (sizeof (ptrdiff_t) == sizeof (int)) |
---|
1153 | /* no flag needed */; |
---|
1154 | else if (sizeof (ptrdiff_t) <= sizeof (long)) |
---|
1155 | flags |= LONGINT; |
---|
1156 | else |
---|
1157 | /* POSIX states that at least one programming |
---|
1158 | environment must support ptrdiff_t no wider than |
---|
1159 | long, but that means other environments can |
---|
1160 | have ptrdiff_t as wide as long long. */ |
---|
1161 | flags |= QUADINT; |
---|
1162 | goto rflag; |
---|
1163 | case 'C': |
---|
1164 | #endif /* _WANT_IO_C99_FORMATS */ |
---|
1165 | case 'c': |
---|
1166 | cp = buf; |
---|
1167 | #ifdef _MB_CAPABLE |
---|
1168 | if (ch == 'C' || (flags & LONGINT)) { |
---|
1169 | mbstate_t ps; |
---|
1170 | |
---|
1171 | memset ((void *)&ps, '\0', sizeof (mbstate_t)); |
---|
1172 | if ((size = (int)_wcrtomb_r (data, cp, |
---|
1173 | (wchar_t)GET_ARG (N, ap, wint_t), |
---|
1174 | &ps)) == -1) { |
---|
1175 | fp->_flags |= __SERR; |
---|
1176 | goto error; |
---|
1177 | } |
---|
1178 | } |
---|
1179 | else |
---|
1180 | #endif /* _MB_CAPABLE */ |
---|
1181 | { |
---|
1182 | *cp = GET_ARG (N, ap, int); |
---|
1183 | size = 1; |
---|
1184 | } |
---|
1185 | sign = '\0'; |
---|
1186 | break; |
---|
1187 | case 'D': /* extension */ |
---|
1188 | flags |= LONGINT; |
---|
1189 | /*FALLTHROUGH*/ |
---|
1190 | case 'd': |
---|
1191 | case 'i': |
---|
1192 | _uquad = SARG (); |
---|
1193 | #ifndef _NO_LONGLONG |
---|
1194 | if ((quad_t)_uquad < 0) |
---|
1195 | #else |
---|
1196 | if ((long) _uquad < 0) |
---|
1197 | #endif |
---|
1198 | { |
---|
1199 | |
---|
1200 | _uquad = -_uquad; |
---|
1201 | sign = '-'; |
---|
1202 | } |
---|
1203 | base = DEC; |
---|
1204 | goto number; |
---|
1205 | #ifdef FLOATING_POINT |
---|
1206 | # ifdef _WANT_IO_C99_FORMATS |
---|
1207 | case 'a': |
---|
1208 | case 'A': |
---|
1209 | case 'F': |
---|
1210 | # endif |
---|
1211 | case 'e': |
---|
1212 | case 'E': |
---|
1213 | case 'f': |
---|
1214 | case 'g': |
---|
1215 | case 'G': |
---|
1216 | # ifdef _NO_LONGDBL |
---|
1217 | if (flags & LONGDBL) { |
---|
1218 | _fpvalue = (double) GET_ARG (N, ap, _LONG_DOUBLE); |
---|
1219 | } else { |
---|
1220 | _fpvalue = GET_ARG (N, ap, double); |
---|
1221 | } |
---|
1222 | |
---|
1223 | /* do this before tricky precision changes |
---|
1224 | |
---|
1225 | If the output is infinite or NaN, leading |
---|
1226 | zeros are not permitted. Otherwise, scanf |
---|
1227 | could not read what printf wrote. |
---|
1228 | */ |
---|
1229 | if (isinf (_fpvalue)) { |
---|
1230 | if (_fpvalue < 0) |
---|
1231 | sign = '-'; |
---|
1232 | if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */ |
---|
1233 | cp = "INF"; |
---|
1234 | else |
---|
1235 | cp = "inf"; |
---|
1236 | size = 3; |
---|
1237 | flags &= ~ZEROPAD; |
---|
1238 | break; |
---|
1239 | } |
---|
1240 | if (isnan (_fpvalue)) { |
---|
1241 | if (signbit (_fpvalue)) |
---|
1242 | sign = '-'; |
---|
1243 | if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */ |
---|
1244 | cp = "NAN"; |
---|
1245 | else |
---|
1246 | cp = "nan"; |
---|
1247 | size = 3; |
---|
1248 | flags &= ~ZEROPAD; |
---|
1249 | break; |
---|
1250 | } |
---|
1251 | |
---|
1252 | # else /* !_NO_LONGDBL */ |
---|
1253 | |
---|
1254 | if (flags & LONGDBL) { |
---|
1255 | _fpvalue = GET_ARG (N, ap, _LONG_DOUBLE); |
---|
1256 | } else { |
---|
1257 | _fpvalue = (_LONG_DOUBLE)GET_ARG (N, ap, double); |
---|
1258 | } |
---|
1259 | |
---|
1260 | /* do this before tricky precision changes */ |
---|
1261 | expt = _ldcheck (&_fpvalue); |
---|
1262 | if (expt == 2) { |
---|
1263 | if (_fpvalue < 0) |
---|
1264 | sign = '-'; |
---|
1265 | if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */ |
---|
1266 | cp = "INF"; |
---|
1267 | else |
---|
1268 | cp = "inf"; |
---|
1269 | size = 3; |
---|
1270 | flags &= ~ZEROPAD; |
---|
1271 | break; |
---|
1272 | } |
---|
1273 | if (expt == 1) { |
---|
1274 | if (signbit (_fpvalue)) |
---|
1275 | sign = '-'; |
---|
1276 | if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */ |
---|
1277 | cp = "NAN"; |
---|
1278 | else |
---|
1279 | cp = "nan"; |
---|
1280 | size = 3; |
---|
1281 | flags &= ~ZEROPAD; |
---|
1282 | break; |
---|
1283 | } |
---|
1284 | # endif /* !_NO_LONGDBL */ |
---|
1285 | |
---|
1286 | # ifdef _WANT_IO_C99_FORMATS |
---|
1287 | if (ch == 'a' || ch == 'A') { |
---|
1288 | ox[0] = '0'; |
---|
1289 | ox[1] = ch == 'a' ? 'x' : 'X'; |
---|
1290 | flags |= HEXPREFIX; |
---|
1291 | if (prec >= BUF) |
---|
1292 | { |
---|
1293 | if ((malloc_buf = |
---|
1294 | (char *)_malloc_r (data, prec + 1)) |
---|
1295 | == NULL) |
---|
1296 | { |
---|
1297 | fp->_flags |= __SERR; |
---|
1298 | goto error; |
---|
1299 | } |
---|
1300 | cp = malloc_buf; |
---|
1301 | } |
---|
1302 | else |
---|
1303 | cp = buf; |
---|
1304 | } else |
---|
1305 | # endif /* _WANT_IO_C99_FORMATS */ |
---|
1306 | if (prec == -1) { |
---|
1307 | prec = DEFPREC; |
---|
1308 | } else if ((ch == 'g' || ch == 'G') && prec == 0) { |
---|
1309 | prec = 1; |
---|
1310 | } |
---|
1311 | |
---|
1312 | flags |= FPT; |
---|
1313 | |
---|
1314 | cp = cvt (data, _fpvalue, prec, flags, &softsign, |
---|
1315 | &expt, ch, &ndig, cp); |
---|
1316 | |
---|
1317 | if (ch == 'g' || ch == 'G') { |
---|
1318 | if (expt <= -4 || expt > prec) |
---|
1319 | ch -= 2; /* 'e' or 'E' */ |
---|
1320 | else |
---|
1321 | ch = 'g'; |
---|
1322 | } |
---|
1323 | # ifdef _WANT_IO_C99_FORMATS |
---|
1324 | else if (ch == 'F') |
---|
1325 | ch = 'f'; |
---|
1326 | # endif |
---|
1327 | if (ch <= 'e') { /* 'a', 'A', 'e', or 'E' fmt */ |
---|
1328 | --expt; |
---|
1329 | expsize = exponent (expstr, expt, ch); |
---|
1330 | size = expsize + ndig; |
---|
1331 | if (ndig > 1 || flags & ALT) |
---|
1332 | size += decp_len; |
---|
1333 | # ifdef _WANT_IO_C99_FORMATS |
---|
1334 | flags &= ~GROUPING; |
---|
1335 | # endif |
---|
1336 | } else { |
---|
1337 | if (ch == 'f') { /* f fmt */ |
---|
1338 | if (expt > 0) { |
---|
1339 | size = expt; |
---|
1340 | if (prec || flags & ALT) |
---|
1341 | size += prec + decp_len; |
---|
1342 | } else /* "0.X" */ |
---|
1343 | size = (prec || flags & ALT) |
---|
1344 | ? prec + 1 + decp_len |
---|
1345 | : 1; |
---|
1346 | } else if (expt >= ndig) { /* fixed g fmt */ |
---|
1347 | size = expt; |
---|
1348 | if (flags & ALT) |
---|
1349 | size += decp_len; |
---|
1350 | } else { |
---|
1351 | size = ndig + decp_len; |
---|
1352 | if (expt <= 0) |
---|
1353 | size += 1 - expt; |
---|
1354 | } |
---|
1355 | # ifdef _WANT_IO_C99_FORMATS |
---|
1356 | if ((flags & GROUPING) && expt > 0) { |
---|
1357 | /* space for thousands' grouping */ |
---|
1358 | nseps = nrepeats = 0; |
---|
1359 | lead = expt; |
---|
1360 | while (*grouping != CHAR_MAX) { |
---|
1361 | if (lead <= *grouping) |
---|
1362 | break; |
---|
1363 | lead -= *grouping; |
---|
1364 | if (grouping[1]) { |
---|
1365 | nseps++; |
---|
1366 | grouping++; |
---|
1367 | } else |
---|
1368 | nrepeats++; |
---|
1369 | } |
---|
1370 | size += (nseps + nrepeats) * thsnd_len; |
---|
1371 | } else |
---|
1372 | # endif |
---|
1373 | lead = expt; |
---|
1374 | } |
---|
1375 | |
---|
1376 | if (softsign) |
---|
1377 | sign = '-'; |
---|
1378 | break; |
---|
1379 | #endif /* FLOATING_POINT */ |
---|
1380 | #ifdef _GLIBC_EXTENSION |
---|
1381 | case 'm': /* extension */ |
---|
1382 | { |
---|
1383 | int dummy; |
---|
1384 | cp = _strerror_r (data, data->_errno, 1, &dummy); |
---|
1385 | } |
---|
1386 | flags &= ~LONGINT; |
---|
1387 | goto string; |
---|
1388 | #endif |
---|
1389 | case 'n': |
---|
1390 | #ifndef _NO_LONGLONG |
---|
1391 | if (flags & QUADINT) |
---|
1392 | *GET_ARG (N, ap, quad_ptr_t) = ret; |
---|
1393 | else |
---|
1394 | #endif |
---|
1395 | if (flags & LONGINT) |
---|
1396 | *GET_ARG (N, ap, long_ptr_t) = ret; |
---|
1397 | else if (flags & SHORTINT) |
---|
1398 | *GET_ARG (N, ap, short_ptr_t) = ret; |
---|
1399 | #ifdef _WANT_IO_C99_FORMATS |
---|
1400 | else if (flags & CHARINT) |
---|
1401 | *GET_ARG (N, ap, char_ptr_t) = ret; |
---|
1402 | #endif |
---|
1403 | else |
---|
1404 | *GET_ARG (N, ap, int_ptr_t) = ret; |
---|
1405 | continue; /* no output */ |
---|
1406 | case 'O': /* extension */ |
---|
1407 | flags |= LONGINT; |
---|
1408 | /*FALLTHROUGH*/ |
---|
1409 | case 'o': |
---|
1410 | _uquad = UARG (); |
---|
1411 | base = OCT; |
---|
1412 | #ifdef _WANT_IO_C99_FORMATS |
---|
1413 | flags &= ~GROUPING; |
---|
1414 | #endif |
---|
1415 | goto nosign; |
---|
1416 | case 'p': |
---|
1417 | /* |
---|
1418 | * ``The argument shall be a pointer to void. The |
---|
1419 | * value of the pointer is converted to a sequence |
---|
1420 | * of printable characters, in an implementation- |
---|
1421 | * defined manner.'' |
---|
1422 | * -- ANSI X3J11 |
---|
1423 | */ |
---|
1424 | /* NOSTRICT */ |
---|
1425 | _uquad = (uintptr_t) GET_ARG (N, ap, void_ptr_t); |
---|
1426 | base = HEX; |
---|
1427 | xdigs = "0123456789abcdef"; |
---|
1428 | flags |= HEXPREFIX; |
---|
1429 | ox[0] = '0'; |
---|
1430 | ox[1] = ch = 'x'; |
---|
1431 | goto nosign; |
---|
1432 | case 's': |
---|
1433 | #ifdef _WANT_IO_C99_FORMATS |
---|
1434 | case 'S': |
---|
1435 | #endif |
---|
1436 | cp = GET_ARG (N, ap, char_ptr_t); |
---|
1437 | #ifdef _GLIBC_EXTENSION |
---|
1438 | string: |
---|
1439 | #endif |
---|
1440 | sign = '\0'; |
---|
1441 | #ifndef __OPTIMIZE_SIZE__ |
---|
1442 | /* Behavior is undefined if the user passed a |
---|
1443 | NULL string when precision is not 0. |
---|
1444 | However, if we are not optimizing for size, |
---|
1445 | we might as well mirror glibc behavior. */ |
---|
1446 | if (cp == NULL) { |
---|
1447 | cp = "(null)"; |
---|
1448 | size = ((unsigned) prec > 6U) ? 6 : prec; |
---|
1449 | } |
---|
1450 | else |
---|
1451 | #endif /* __OPTIMIZE_SIZE__ */ |
---|
1452 | #ifdef _MB_CAPABLE |
---|
1453 | if (ch == 'S' || (flags & LONGINT)) { |
---|
1454 | mbstate_t ps; |
---|
1455 | const wchar_t *wcp; |
---|
1456 | |
---|
1457 | wcp = (const wchar_t *)cp; |
---|
1458 | size = m = 0; |
---|
1459 | memset ((void *)&ps, '\0', sizeof (mbstate_t)); |
---|
1460 | |
---|
1461 | /* Count number of bytes needed for multibyte |
---|
1462 | string that will be produced from widechar |
---|
1463 | string. */ |
---|
1464 | if (prec >= 0) { |
---|
1465 | while (1) { |
---|
1466 | if (wcp[m] == L'\0') |
---|
1467 | break; |
---|
1468 | if ((n = (int)_wcrtomb_r (data, |
---|
1469 | buf, wcp[m], &ps)) == -1) { |
---|
1470 | fp->_flags |= __SERR; |
---|
1471 | goto error; |
---|
1472 | } |
---|
1473 | if (n + size > prec) |
---|
1474 | break; |
---|
1475 | m += 1; |
---|
1476 | size += n; |
---|
1477 | if (size == prec) |
---|
1478 | break; |
---|
1479 | } |
---|
1480 | } |
---|
1481 | else { |
---|
1482 | if ((size = (int)_wcsrtombs_r (data, |
---|
1483 | NULL, &wcp, 0, &ps)) == -1) { |
---|
1484 | fp->_flags |= __SERR; |
---|
1485 | goto error; |
---|
1486 | } |
---|
1487 | wcp = (const wchar_t *)cp; |
---|
1488 | } |
---|
1489 | |
---|
1490 | if (size == 0) |
---|
1491 | break; |
---|
1492 | |
---|
1493 | if (size >= BUF) { |
---|
1494 | if ((malloc_buf = |
---|
1495 | (char *)_malloc_r (data, size + 1)) |
---|
1496 | == NULL) { |
---|
1497 | fp->_flags |= __SERR; |
---|
1498 | goto error; |
---|
1499 | } |
---|
1500 | cp = malloc_buf; |
---|
1501 | } else |
---|
1502 | cp = buf; |
---|
1503 | |
---|
1504 | /* Convert widechar string to multibyte string. */ |
---|
1505 | memset ((void *)&ps, '\0', sizeof (mbstate_t)); |
---|
1506 | if (_wcsrtombs_r (data, cp, &wcp, size, &ps) |
---|
1507 | != size) { |
---|
1508 | fp->_flags |= __SERR; |
---|
1509 | goto error; |
---|
1510 | } |
---|
1511 | cp[size] = '\0'; |
---|
1512 | } |
---|
1513 | else |
---|
1514 | #endif /* _MB_CAPABLE */ |
---|
1515 | if (prec >= 0) { |
---|
1516 | /* |
---|
1517 | * can't use strlen; can only look for the |
---|
1518 | * NUL in the first `prec' characters, and |
---|
1519 | * strlen () will go further. |
---|
1520 | */ |
---|
1521 | char *p = memchr (cp, 0, prec); |
---|
1522 | |
---|
1523 | if (p != NULL) |
---|
1524 | size = p - cp; |
---|
1525 | else |
---|
1526 | size = prec; |
---|
1527 | } else |
---|
1528 | size = strlen (cp); |
---|
1529 | |
---|
1530 | break; |
---|
1531 | case 'U': /* extension */ |
---|
1532 | flags |= LONGINT; |
---|
1533 | /*FALLTHROUGH*/ |
---|
1534 | case 'u': |
---|
1535 | _uquad = UARG (); |
---|
1536 | base = DEC; |
---|
1537 | goto nosign; |
---|
1538 | case 'X': |
---|
1539 | xdigs = "0123456789ABCDEF"; |
---|
1540 | goto hex; |
---|
1541 | case 'x': |
---|
1542 | xdigs = "0123456789abcdef"; |
---|
1543 | hex: _uquad = UARG (); |
---|
1544 | base = HEX; |
---|
1545 | /* leading 0x/X only if non-zero */ |
---|
1546 | if (flags & ALT && _uquad != 0) { |
---|
1547 | ox[0] = '0'; |
---|
1548 | ox[1] = ch; |
---|
1549 | flags |= HEXPREFIX; |
---|
1550 | } |
---|
1551 | |
---|
1552 | #ifdef _WANT_IO_C99_FORMATS |
---|
1553 | flags &= ~GROUPING; |
---|
1554 | #endif |
---|
1555 | /* unsigned conversions */ |
---|
1556 | nosign: sign = '\0'; |
---|
1557 | /* |
---|
1558 | * ``... diouXx conversions ... if a precision is |
---|
1559 | * specified, the 0 flag will be ignored.'' |
---|
1560 | * -- ANSI X3J11 |
---|
1561 | */ |
---|
1562 | number: if ((dprec = prec) >= 0) |
---|
1563 | flags &= ~ZEROPAD; |
---|
1564 | |
---|
1565 | /* |
---|
1566 | * ``The result of converting a zero value with an |
---|
1567 | * explicit precision of zero is no characters.'' |
---|
1568 | * -- ANSI X3J11 |
---|
1569 | */ |
---|
1570 | cp = buf + BUF; |
---|
1571 | if (_uquad != 0 || prec != 0) { |
---|
1572 | /* |
---|
1573 | * Unsigned mod is hard, and unsigned mod |
---|
1574 | * by a constant is easier than that by |
---|
1575 | * a variable; hence this switch. |
---|
1576 | */ |
---|
1577 | switch (base) { |
---|
1578 | case OCT: |
---|
1579 | do { |
---|
1580 | *--cp = to_char (_uquad & 7); |
---|
1581 | _uquad >>= 3; |
---|
1582 | } while (_uquad); |
---|
1583 | /* handle octal leading 0 */ |
---|
1584 | if (flags & ALT && *cp != '0') |
---|
1585 | *--cp = '0'; |
---|
1586 | break; |
---|
1587 | |
---|
1588 | case DEC: |
---|
1589 | /* many numbers are 1 digit */ |
---|
1590 | if (_uquad < 10) { |
---|
1591 | *--cp = to_char(_uquad); |
---|
1592 | break; |
---|
1593 | } |
---|
1594 | #ifdef _WANT_IO_C99_FORMATS |
---|
1595 | ndig = 0; |
---|
1596 | #endif |
---|
1597 | do { |
---|
1598 | *--cp = to_char (_uquad % 10); |
---|
1599 | #ifdef _WANT_IO_C99_FORMATS |
---|
1600 | ndig++; |
---|
1601 | /* If (*grouping == CHAR_MAX) then no |
---|
1602 | more grouping */ |
---|
1603 | if ((flags & GROUPING) |
---|
1604 | && ndig == *grouping |
---|
1605 | && *grouping != CHAR_MAX |
---|
1606 | && _uquad > 9) { |
---|
1607 | cp -= thsnd_len; |
---|
1608 | strncpy (cp, thousands_sep, |
---|
1609 | thsnd_len); |
---|
1610 | ndig = 0; |
---|
1611 | /* If (grouping[1] == '\0') then we |
---|
1612 | have to use *grouping character |
---|
1613 | (last grouping rule) for all |
---|
1614 | next cases. */ |
---|
1615 | if (grouping[1] != '\0') |
---|
1616 | grouping++; |
---|
1617 | } |
---|
1618 | #endif |
---|
1619 | _uquad /= 10; |
---|
1620 | } while (_uquad != 0); |
---|
1621 | break; |
---|
1622 | |
---|
1623 | case HEX: |
---|
1624 | do { |
---|
1625 | *--cp = xdigs[_uquad & 15]; |
---|
1626 | _uquad >>= 4; |
---|
1627 | } while (_uquad); |
---|
1628 | break; |
---|
1629 | |
---|
1630 | default: |
---|
1631 | cp = "bug in vfprintf: bad base"; |
---|
1632 | size = strlen (cp); |
---|
1633 | goto skipsize; |
---|
1634 | } |
---|
1635 | } |
---|
1636 | /* |
---|
1637 | * ...result is to be converted to an 'alternate form'. |
---|
1638 | * For o conversion, it increases the precision to force |
---|
1639 | * the first digit of the result to be a zero." |
---|
1640 | * -- ANSI X3J11 |
---|
1641 | * |
---|
1642 | * To demonstrate this case, compile and run: |
---|
1643 | * printf ("%#.0o",0); |
---|
1644 | */ |
---|
1645 | else if (base == OCT && (flags & ALT)) |
---|
1646 | *--cp = '0'; |
---|
1647 | |
---|
1648 | size = buf + BUF - cp; |
---|
1649 | skipsize: |
---|
1650 | break; |
---|
1651 | default: /* "%?" prints ?, unless ? is NUL */ |
---|
1652 | if (ch == '\0') |
---|
1653 | goto done; |
---|
1654 | /* pretend it was %c with argument ch */ |
---|
1655 | cp = buf; |
---|
1656 | *cp = ch; |
---|
1657 | size = 1; |
---|
1658 | sign = '\0'; |
---|
1659 | break; |
---|
1660 | } |
---|
1661 | |
---|
1662 | /* |
---|
1663 | * All reasonable formats wind up here. At this point, `cp' |
---|
1664 | * points to a string which (if not flags&LADJUST) should be |
---|
1665 | * padded out to `width' places. If flags&ZEROPAD, it should |
---|
1666 | * first be prefixed by any sign or other prefix; otherwise, |
---|
1667 | * it should be blank padded before the prefix is emitted. |
---|
1668 | * After any left-hand padding and prefixing, emit zeroes |
---|
1669 | * required by a decimal [diouxX] precision, then print the |
---|
1670 | * string proper, then emit zeroes required by any leftover |
---|
1671 | * floating precision; finally, if LADJUST, pad with blanks. |
---|
1672 | * If flags&FPT, ch must be in [aAeEfg]. |
---|
1673 | * |
---|
1674 | * Compute actual size, so we know how much to pad. |
---|
1675 | * size excludes decimal prec; realsz includes it. |
---|
1676 | */ |
---|
1677 | realsz = dprec > size ? dprec : size; |
---|
1678 | if (sign) |
---|
1679 | realsz++; |
---|
1680 | if (flags & HEXPREFIX) |
---|
1681 | realsz+= 2; |
---|
1682 | |
---|
1683 | /* right-adjusting blank padding */ |
---|
1684 | if ((flags & (LADJUST|ZEROPAD)) == 0) |
---|
1685 | PAD (width - realsz, blanks); |
---|
1686 | |
---|
1687 | /* prefix */ |
---|
1688 | if (sign) |
---|
1689 | PRINT (&sign, 1); |
---|
1690 | if (flags & HEXPREFIX) |
---|
1691 | PRINT (ox, 2); |
---|
1692 | |
---|
1693 | /* right-adjusting zero padding */ |
---|
1694 | if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) |
---|
1695 | PAD (width - realsz, zeroes); |
---|
1696 | |
---|
1697 | /* leading zeroes from decimal precision */ |
---|
1698 | PAD (dprec - size, zeroes); |
---|
1699 | |
---|
1700 | /* the string or number proper */ |
---|
1701 | #ifdef FLOATING_POINT |
---|
1702 | if ((flags & FPT) == 0) { |
---|
1703 | PRINT (cp, size); |
---|
1704 | } else { /* glue together f_p fragments */ |
---|
1705 | if (ch >= 'f') { /* 'f' or 'g' */ |
---|
1706 | if (_fpvalue == 0) { |
---|
1707 | /* kludge for __dtoa irregularity */ |
---|
1708 | PRINT ("0", 1); |
---|
1709 | if (expt < ndig || flags & ALT) { |
---|
1710 | PRINT (decimal_point, decp_len); |
---|
1711 | PAD (ndig - 1, zeroes); |
---|
1712 | } |
---|
1713 | } else if (expt <= 0) { |
---|
1714 | PRINT ("0", 1); |
---|
1715 | if (expt || ndig || flags & ALT) { |
---|
1716 | PRINT (decimal_point, decp_len); |
---|
1717 | PAD (-expt, zeroes); |
---|
1718 | PRINT (cp, ndig); |
---|
1719 | } |
---|
1720 | } else { |
---|
1721 | char *convbuf = cp; |
---|
1722 | PRINTANDPAD(cp, convbuf + ndig, |
---|
1723 | lead, zeroes); |
---|
1724 | cp += lead; |
---|
1725 | #ifdef _WANT_IO_C99_FORMATS |
---|
1726 | if (flags & GROUPING) { |
---|
1727 | while (nseps > 0 || nrepeats > 0) { |
---|
1728 | if (nrepeats > 0) |
---|
1729 | nrepeats--; |
---|
1730 | else { |
---|
1731 | grouping--; |
---|
1732 | nseps--; |
---|
1733 | } |
---|
1734 | PRINT(thousands_sep, thsnd_len); |
---|
1735 | PRINTANDPAD (cp, convbuf + ndig, |
---|
1736 | *grouping, zeroes); |
---|
1737 | cp += *grouping; |
---|
1738 | } |
---|
1739 | if (cp > convbuf + ndig) |
---|
1740 | cp = convbuf + ndig; |
---|
1741 | } |
---|
1742 | #endif |
---|
1743 | if (expt < ndig || flags & ALT) |
---|
1744 | PRINT (decimal_point, decp_len); |
---|
1745 | PRINTANDPAD (cp, convbuf + ndig, |
---|
1746 | ndig - expt, zeroes); |
---|
1747 | } |
---|
1748 | } else { /* 'a', 'A', 'e', or 'E' */ |
---|
1749 | if (ndig > 1 || flags & ALT) { |
---|
1750 | PRINT (cp, 1); |
---|
1751 | cp++; |
---|
1752 | PRINT (decimal_point, decp_len); |
---|
1753 | if (_fpvalue) { |
---|
1754 | PRINT (cp, ndig - 1); |
---|
1755 | } else /* 0.[0..] */ |
---|
1756 | /* __dtoa irregularity */ |
---|
1757 | PAD (ndig - 1, zeroes); |
---|
1758 | } else /* XeYYY */ |
---|
1759 | PRINT (cp, 1); |
---|
1760 | PRINT (expstr, expsize); |
---|
1761 | } |
---|
1762 | } |
---|
1763 | #else /* !FLOATING_POINT */ |
---|
1764 | PRINT (cp, size); |
---|
1765 | #endif |
---|
1766 | /* left-adjusting padding (always blank) */ |
---|
1767 | if (flags & LADJUST) |
---|
1768 | PAD (width - realsz, blanks); |
---|
1769 | |
---|
1770 | /* finally, adjust ret */ |
---|
1771 | ret += width > realsz ? width : realsz; |
---|
1772 | |
---|
1773 | FLUSH (); /* copy out the I/O vectors */ |
---|
1774 | |
---|
1775 | if (malloc_buf != NULL) { |
---|
1776 | _free_r (data, malloc_buf); |
---|
1777 | malloc_buf = NULL; |
---|
1778 | } |
---|
1779 | } |
---|
1780 | done: |
---|
1781 | FLUSH (); |
---|
1782 | error: |
---|
1783 | if (malloc_buf != NULL) |
---|
1784 | _free_r (data, malloc_buf); |
---|
1785 | #ifndef STRING_ONLY |
---|
1786 | _newlib_flockfile_end (fp); |
---|
1787 | #endif |
---|
1788 | return (__sferror (fp) ? EOF : ret); |
---|
1789 | /* NOTREACHED */ |
---|
1790 | } |
---|
1791 | |
---|
1792 | #ifdef FLOATING_POINT |
---|
1793 | |
---|
1794 | /* Using reentrant DATA, convert finite VALUE into a string of digits |
---|
1795 | with no decimal point, using NDIGITS precision and FLAGS as guides |
---|
1796 | to whether trailing zeros must be included. Set *SIGN to nonzero |
---|
1797 | if VALUE was negative. Set *DECPT to the exponent plus one. Set |
---|
1798 | *LENGTH to the length of the returned string. CH must be one of |
---|
1799 | [aAeEfFgG]; if it is [aA], then the return string lives in BUF, |
---|
1800 | otherwise the return value shares the mprec reentrant storage. */ |
---|
1801 | static char * |
---|
1802 | cvt(struct _reent *data, _PRINTF_FLOAT_TYPE value, int ndigits, int flags, |
---|
1803 | char *sign, int *decpt, int ch, int *length, char *buf) |
---|
1804 | { |
---|
1805 | int mode, dsgn; |
---|
1806 | char *digits, *bp, *rve; |
---|
1807 | # ifdef _NO_LONGDBL |
---|
1808 | union double_union tmp; |
---|
1809 | |
---|
1810 | tmp.d = value; |
---|
1811 | if (word0 (tmp) & Sign_bit) { /* this will check for < 0 and -0.0 */ |
---|
1812 | value = -value; |
---|
1813 | *sign = '-'; |
---|
1814 | } else |
---|
1815 | *sign = '\000'; |
---|
1816 | # else /* !_NO_LONGDBL */ |
---|
1817 | union |
---|
1818 | { |
---|
1819 | struct ldieee ieee; |
---|
1820 | _LONG_DOUBLE val; |
---|
1821 | } ld; |
---|
1822 | |
---|
1823 | ld.val = value; |
---|
1824 | if (ld.ieee.sign) { /* this will check for < 0 and -0.0 */ |
---|
1825 | value = -value; |
---|
1826 | *sign = '-'; |
---|
1827 | } else |
---|
1828 | *sign = '\000'; |
---|
1829 | # endif /* !_NO_LONGDBL */ |
---|
1830 | |
---|
1831 | # ifdef _WANT_IO_C99_FORMATS |
---|
1832 | if (ch == 'a' || ch == 'A') { |
---|
1833 | /* This code assumes FLT_RADIX is a power of 2. The initial |
---|
1834 | division ensures the digit before the decimal will be less |
---|
1835 | than FLT_RADIX (unless it is rounded later). There is no |
---|
1836 | loss of precision in these calculations. */ |
---|
1837 | value = FREXP (value, decpt) / 8; |
---|
1838 | if (!value) |
---|
1839 | *decpt = 1; |
---|
1840 | digits = ch == 'a' ? "0123456789abcdef" : "0123456789ABCDEF"; |
---|
1841 | bp = buf; |
---|
1842 | do { |
---|
1843 | value *= 16; |
---|
1844 | mode = (int) value; |
---|
1845 | value -= mode; |
---|
1846 | *bp++ = digits[mode]; |
---|
1847 | } while (ndigits-- && value); |
---|
1848 | if (value > 0.5 || (value == 0.5 && mode & 1)) { |
---|
1849 | /* round to even */ |
---|
1850 | rve = bp; |
---|
1851 | while (*--rve == digits[0xf]) { |
---|
1852 | *rve = '0'; |
---|
1853 | } |
---|
1854 | *rve = *rve == '9' ? digits[0xa] : *rve + 1; |
---|
1855 | } else { |
---|
1856 | while (ndigits-- >= 0) { |
---|
1857 | *bp++ = '0'; |
---|
1858 | } |
---|
1859 | } |
---|
1860 | *length = bp - buf; |
---|
1861 | return buf; |
---|
1862 | } |
---|
1863 | # endif /* _WANT_IO_C99_FORMATS */ |
---|
1864 | if (ch == 'f' || ch == 'F') { |
---|
1865 | mode = 3; /* ndigits after the decimal point */ |
---|
1866 | } else { |
---|
1867 | /* To obtain ndigits after the decimal point for the 'e' |
---|
1868 | * and 'E' formats, round to ndigits + 1 significant |
---|
1869 | * figures. |
---|
1870 | */ |
---|
1871 | if (ch == 'e' || ch == 'E') { |
---|
1872 | ndigits++; |
---|
1873 | } |
---|
1874 | mode = 2; /* ndigits significant digits */ |
---|
1875 | } |
---|
1876 | |
---|
1877 | digits = _DTOA_R (data, value, mode, ndigits, decpt, &dsgn, &rve); |
---|
1878 | |
---|
1879 | if ((ch != 'g' && ch != 'G') || flags & ALT) { /* Print trailing zeros */ |
---|
1880 | bp = digits + ndigits; |
---|
1881 | if (ch == 'f' || ch == 'F') { |
---|
1882 | if (*digits == '0' && value) |
---|
1883 | *decpt = -ndigits + 1; |
---|
1884 | bp += *decpt; |
---|
1885 | } |
---|
1886 | if (value == 0) /* kludge for __dtoa irregularity */ |
---|
1887 | rve = bp; |
---|
1888 | while (rve < bp) |
---|
1889 | *rve++ = '0'; |
---|
1890 | } |
---|
1891 | *length = rve - digits; |
---|
1892 | return (digits); |
---|
1893 | } |
---|
1894 | |
---|
1895 | static int |
---|
1896 | exponent(char *p0, int exp, int fmtch) |
---|
1897 | { |
---|
1898 | register char *p, *t; |
---|
1899 | char expbuf[MAXEXPLEN]; |
---|
1900 | # ifdef _WANT_IO_C99_FORMATS |
---|
1901 | int isa = fmtch == 'a' || fmtch == 'A'; |
---|
1902 | # else |
---|
1903 | # define isa 0 |
---|
1904 | # endif |
---|
1905 | |
---|
1906 | p = p0; |
---|
1907 | *p++ = isa ? 'p' - 'a' + fmtch : fmtch; |
---|
1908 | if (exp < 0) { |
---|
1909 | exp = -exp; |
---|
1910 | *p++ = '-'; |
---|
1911 | } |
---|
1912 | else |
---|
1913 | *p++ = '+'; |
---|
1914 | t = expbuf + MAXEXPLEN; |
---|
1915 | if (exp > 9) { |
---|
1916 | do { |
---|
1917 | *--t = to_char (exp % 10); |
---|
1918 | } while ((exp /= 10) > 9); |
---|
1919 | *--t = to_char (exp); |
---|
1920 | for (; t < expbuf + MAXEXPLEN; *p++ = *t++); |
---|
1921 | } |
---|
1922 | else { |
---|
1923 | if (!isa) |
---|
1924 | *p++ = '0'; |
---|
1925 | *p++ = to_char (exp); |
---|
1926 | } |
---|
1927 | return (p - p0); |
---|
1928 | } |
---|
1929 | #endif /* FLOATING_POINT */ |
---|
1930 | |
---|
1931 | |
---|
1932 | #ifndef _NO_POS_ARGS |
---|
1933 | |
---|
1934 | /* Positional argument support. |
---|
1935 | Written by Jeff Johnston |
---|
1936 | |
---|
1937 | Copyright (c) 2002 Red Hat Incorporated. |
---|
1938 | All rights reserved. |
---|
1939 | |
---|
1940 | Redistribution and use in source and binary forms, with or without |
---|
1941 | modification, are permitted provided that the following conditions are met: |
---|
1942 | |
---|
1943 | Redistributions of source code must retain the above copyright |
---|
1944 | notice, this list of conditions and the following disclaimer. |
---|
1945 | |
---|
1946 | Redistributions in binary form must reproduce the above copyright |
---|
1947 | notice, this list of conditions and the following disclaimer in the |
---|
1948 | documentation and/or other materials provided with the distribution. |
---|
1949 | |
---|
1950 | The name of Red Hat Incorporated may not be used to endorse |
---|
1951 | or promote products derived from this software without specific |
---|
1952 | prior written permission. |
---|
1953 | |
---|
1954 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
---|
1955 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
---|
1956 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
---|
1957 | DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY |
---|
1958 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
---|
1959 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
---|
1960 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
---|
1961 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
---|
1962 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
---|
1963 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ |
---|
1964 | |
---|
1965 | /* The below constant state tables are shared between all versions of |
---|
1966 | vfprintf and vfwprintf. They must only be defined once, which we do in |
---|
1967 | the STRING_ONLY/INTEGER_ONLY versions here. */ |
---|
1968 | #if defined (STRING_ONLY) && defined(INTEGER_ONLY) |
---|
1969 | |
---|
1970 | const __CH_CLASS __chclass[256] = { |
---|
1971 | /* 00-07 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1972 | /* 08-0f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1973 | /* 10-17 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1974 | /* 18-1f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1975 | /* 20-27 */ FLAG, OTHER, OTHER, FLAG, DOLLAR, OTHER, OTHER, FLAG, |
---|
1976 | /* 28-2f */ OTHER, OTHER, STAR, FLAG, OTHER, FLAG, DOT, OTHER, |
---|
1977 | /* 30-37 */ ZERO, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, |
---|
1978 | /* 38-3f */ DIGIT, DIGIT, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1979 | /* 40-47 */ OTHER, SPEC, OTHER, SPEC, SPEC, SPEC, SPEC, SPEC, |
---|
1980 | /* 48-4f */ OTHER, OTHER, OTHER, OTHER, MODFR, OTHER, OTHER, SPEC, |
---|
1981 | /* 50-57 */ OTHER, OTHER, OTHER, SPEC, OTHER, SPEC, OTHER, OTHER, |
---|
1982 | /* 58-5f */ SPEC, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1983 | /* 60-67 */ OTHER, SPEC, OTHER, SPEC, SPEC, SPEC, SPEC, SPEC, |
---|
1984 | /* 68-6f */ MODFR, SPEC, MODFR, OTHER, MODFR, OTHER, SPEC, SPEC, |
---|
1985 | /* 70-77 */ SPEC, MODFR, OTHER, SPEC, MODFR, SPEC, OTHER, OTHER, |
---|
1986 | /* 78-7f */ SPEC, OTHER, MODFR, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1987 | /* 80-87 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1988 | /* 88-8f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1989 | /* 90-97 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1990 | /* 98-9f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1991 | /* a0-a7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1992 | /* a8-af */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1993 | /* b0-b7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1994 | /* b8-bf */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1995 | /* c0-c7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1996 | /* c8-cf */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1997 | /* d0-d7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1998 | /* d8-df */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
1999 | /* e0-e7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
2000 | /* e8-ef */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
2001 | /* f0-f7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
2002 | /* f8-ff */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
---|
2003 | }; |
---|
2004 | |
---|
2005 | const __STATE __state_table[MAX_STATE][MAX_CH_CLASS] = { |
---|
2006 | /* '0' '1-9' '$' MODFR SPEC '.' '*' FLAG OTHER */ |
---|
2007 | /* START */ { SFLAG, WDIG, DONE, SMOD, DONE, SDOT, VARW, SFLAG, DONE }, |
---|
2008 | /* SFLAG */ { SFLAG, WDIG, DONE, SMOD, DONE, SDOT, VARW, SFLAG, DONE }, |
---|
2009 | /* WDIG */ { DONE, DONE, WIDTH, SMOD, DONE, SDOT, DONE, DONE, DONE }, |
---|
2010 | /* WIDTH */ { DONE, DONE, DONE, SMOD, DONE, SDOT, DONE, DONE, DONE }, |
---|
2011 | /* SMOD */ { DONE, DONE, DONE, DONE, DONE, DONE, DONE, DONE, DONE }, |
---|
2012 | /* SDOT */ { SDOT, PREC, DONE, SMOD, DONE, DONE, VARP, DONE, DONE }, |
---|
2013 | /* VARW */ { DONE, VWDIG, DONE, SMOD, DONE, SDOT, DONE, DONE, DONE }, |
---|
2014 | /* VARP */ { DONE, VPDIG, DONE, SMOD, DONE, DONE, DONE, DONE, DONE }, |
---|
2015 | /* PREC */ { DONE, DONE, DONE, SMOD, DONE, DONE, DONE, DONE, DONE }, |
---|
2016 | /* VWDIG */ { DONE, DONE, WIDTH, DONE, DONE, DONE, DONE, DONE, DONE }, |
---|
2017 | /* VPDIG */ { DONE, DONE, PREC, DONE, DONE, DONE, DONE, DONE, DONE }, |
---|
2018 | }; |
---|
2019 | |
---|
2020 | const __ACTION __action_table[MAX_STATE][MAX_CH_CLASS] = { |
---|
2021 | /* '0' '1-9' '$' MODFR SPEC '.' '*' FLAG OTHER */ |
---|
2022 | /* START */ { NOOP, NUMBER, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
---|
2023 | /* SFLAG */ { NOOP, NUMBER, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
---|
2024 | /* WDIG */ { NOOP, NOOP, GETPOS, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
---|
2025 | /* WIDTH */ { NOOP, NOOP, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
---|
2026 | /* SMOD */ { NOOP, NOOP, NOOP, NOOP, GETARG, NOOP, NOOP, NOOP, NOOP }, |
---|
2027 | /* SDOT */ { NOOP, SKIPNUM, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
---|
2028 | /* VARW */ { NOOP, NUMBER, NOOP, GETPW, GETPWB, GETPW, NOOP, NOOP, NOOP }, |
---|
2029 | /* VARP */ { NOOP, NUMBER, NOOP, GETPW, GETPWB, NOOP, NOOP, NOOP, NOOP }, |
---|
2030 | /* PREC */ { NOOP, NOOP, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
---|
2031 | /* VWDIG */ { NOOP, NOOP, PWPOS, NOOP, NOOP, NOOP, NOOP, NOOP, NOOP }, |
---|
2032 | /* VPDIG */ { NOOP, NOOP, PWPOS, NOOP, NOOP, NOOP, NOOP, NOOP, NOOP }, |
---|
2033 | }; |
---|
2034 | |
---|
2035 | #endif /* STRING_ONLY && INTEGER_ONLY */ |
---|
2036 | |
---|
2037 | /* function to get positional parameter N where n = N - 1 */ |
---|
2038 | static union arg_val * |
---|
2039 | get_arg (struct _reent *data, |
---|
2040 | int n, |
---|
2041 | char *fmt, |
---|
2042 | va_list *ap, |
---|
2043 | int *numargs_p, |
---|
2044 | union arg_val *args, |
---|
2045 | int *arg_type, |
---|
2046 | char **last_fmt) |
---|
2047 | { |
---|
2048 | int ch; |
---|
2049 | int number, flags; |
---|
2050 | int spec_type; |
---|
2051 | int numargs = *numargs_p; |
---|
2052 | __CH_CLASS chtype; |
---|
2053 | __STATE state, next_state; |
---|
2054 | __ACTION action; |
---|
2055 | int pos, last_arg; |
---|
2056 | int max_pos_arg = n; |
---|
2057 | /* Only need types that can be reached via vararg promotions. */ |
---|
2058 | enum types { INT, LONG_INT, QUAD_INT, CHAR_PTR, DOUBLE, LONG_DOUBLE, WIDE_CHAR }; |
---|
2059 | # ifdef _MB_CAPABLE |
---|
2060 | wchar_t wc; |
---|
2061 | mbstate_t wc_state; |
---|
2062 | int nbytes; |
---|
2063 | # endif |
---|
2064 | |
---|
2065 | /* if this isn't the first call, pick up where we left off last time */ |
---|
2066 | if (*last_fmt != NULL) |
---|
2067 | fmt = *last_fmt; |
---|
2068 | |
---|
2069 | # ifdef _MB_CAPABLE |
---|
2070 | memset (&wc_state, '\0', sizeof (wc_state)); |
---|
2071 | # endif |
---|
2072 | |
---|
2073 | /* we need to process either to end of fmt string or until we have actually |
---|
2074 | read the desired parameter from the vararg list. */ |
---|
2075 | while (*fmt && n >= numargs) |
---|
2076 | { |
---|
2077 | # ifdef _MB_CAPABLE |
---|
2078 | while ((nbytes = __MBTOWC (data, &wc, fmt, MB_CUR_MAX, &wc_state)) > 0) |
---|
2079 | { |
---|
2080 | fmt += nbytes; |
---|
2081 | if (wc == '%') |
---|
2082 | break; |
---|
2083 | } |
---|
2084 | |
---|
2085 | if (nbytes <= 0) |
---|
2086 | break; |
---|
2087 | # else |
---|
2088 | while (*fmt != '\0' && *fmt != '%') |
---|
2089 | fmt += 1; |
---|
2090 | |
---|
2091 | if (*fmt == '\0') |
---|
2092 | break; |
---|
2093 | |
---|
2094 | fmt++; |
---|
2095 | # endif /* ! _MB_CAPABLE */ |
---|
2096 | state = START; |
---|
2097 | flags = 0; |
---|
2098 | pos = -1; |
---|
2099 | number = 0; |
---|
2100 | spec_type = INT; |
---|
2101 | |
---|
2102 | /* Use state/action table to process format specifiers. We ignore invalid |
---|
2103 | formats and we are only interested in information that tells us how to |
---|
2104 | read the vararg list. */ |
---|
2105 | while (state != DONE) |
---|
2106 | { |
---|
2107 | ch = *fmt++; |
---|
2108 | chtype = __chclass[ch]; |
---|
2109 | next_state = __state_table[state][chtype]; |
---|
2110 | action = __action_table[state][chtype]; |
---|
2111 | state = next_state; |
---|
2112 | |
---|
2113 | switch (action) |
---|
2114 | { |
---|
2115 | case GETMOD: /* we have format modifier */ |
---|
2116 | switch (ch) |
---|
2117 | { |
---|
2118 | case 'h': |
---|
2119 | /* No flag needed, since short and char promote to int. */ |
---|
2120 | break; |
---|
2121 | case 'L': |
---|
2122 | flags |= LONGDBL; |
---|
2123 | break; |
---|
2124 | case 'q': |
---|
2125 | flags |= QUADINT; |
---|
2126 | break; |
---|
2127 | # ifdef _WANT_IO_C99_FORMATS |
---|
2128 | case 'j': |
---|
2129 | if (sizeof (intmax_t) == sizeof (long)) |
---|
2130 | flags |= LONGINT; |
---|
2131 | else |
---|
2132 | flags |= QUADINT; |
---|
2133 | break; |
---|
2134 | case 'z': |
---|
2135 | if (sizeof (size_t) <= sizeof (int)) |
---|
2136 | /* no flag needed */; |
---|
2137 | else if (sizeof (size_t) <= sizeof (long)) |
---|
2138 | flags |= LONGINT; |
---|
2139 | else |
---|
2140 | /* POSIX states that at least one programming |
---|
2141 | environment must support size_t no wider than |
---|
2142 | long, but that means other environments can |
---|
2143 | have size_t as wide as long long. */ |
---|
2144 | flags |= QUADINT; |
---|
2145 | break; |
---|
2146 | case 't': |
---|
2147 | if (sizeof (ptrdiff_t) <= sizeof (int)) |
---|
2148 | /* no flag needed */; |
---|
2149 | else if (sizeof (ptrdiff_t) <= sizeof (long)) |
---|
2150 | flags |= LONGINT; |
---|
2151 | else |
---|
2152 | /* POSIX states that at least one programming |
---|
2153 | environment must support ptrdiff_t no wider than |
---|
2154 | long, but that means other environments can |
---|
2155 | have ptrdiff_t as wide as long long. */ |
---|
2156 | flags |= QUADINT; |
---|
2157 | break; |
---|
2158 | # endif /* _WANT_IO_C99_FORMATS */ |
---|
2159 | case 'l': |
---|
2160 | default: |
---|
2161 | # if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG |
---|
2162 | if (*fmt == 'l') |
---|
2163 | { |
---|
2164 | flags |= QUADINT; |
---|
2165 | ++fmt; |
---|
2166 | } |
---|
2167 | else |
---|
2168 | # endif |
---|
2169 | flags |= LONGINT; |
---|
2170 | break; |
---|
2171 | } |
---|
2172 | break; |
---|
2173 | case GETARG: /* we have format specifier */ |
---|
2174 | { |
---|
2175 | numargs &= (MAX_POS_ARGS - 1); |
---|
2176 | /* process the specifier and translate it to a type to fetch from varargs */ |
---|
2177 | switch (ch) |
---|
2178 | { |
---|
2179 | case 'd': |
---|
2180 | case 'i': |
---|
2181 | case 'o': |
---|
2182 | case 'x': |
---|
2183 | case 'X': |
---|
2184 | case 'u': |
---|
2185 | if (flags & LONGINT) |
---|
2186 | spec_type = LONG_INT; |
---|
2187 | # ifndef _NO_LONGLONG |
---|
2188 | else if (flags & QUADINT) |
---|
2189 | spec_type = QUAD_INT; |
---|
2190 | # endif |
---|
2191 | else |
---|
2192 | spec_type = INT; |
---|
2193 | break; |
---|
2194 | case 'D': |
---|
2195 | case 'U': |
---|
2196 | case 'O': |
---|
2197 | spec_type = LONG_INT; |
---|
2198 | break; |
---|
2199 | # ifdef _WANT_IO_C99_FORMATS |
---|
2200 | case 'a': |
---|
2201 | case 'A': |
---|
2202 | case 'F': |
---|
2203 | # endif |
---|
2204 | case 'f': |
---|
2205 | case 'g': |
---|
2206 | case 'G': |
---|
2207 | case 'E': |
---|
2208 | case 'e': |
---|
2209 | # ifndef _NO_LONGDBL |
---|
2210 | if (flags & LONGDBL) |
---|
2211 | spec_type = LONG_DOUBLE; |
---|
2212 | else |
---|
2213 | # endif |
---|
2214 | spec_type = DOUBLE; |
---|
2215 | break; |
---|
2216 | case 's': |
---|
2217 | # ifdef _WANT_IO_C99_FORMATS |
---|
2218 | case 'S': |
---|
2219 | # endif |
---|
2220 | case 'p': |
---|
2221 | case 'n': |
---|
2222 | spec_type = CHAR_PTR; |
---|
2223 | break; |
---|
2224 | case 'c': |
---|
2225 | # ifdef _WANT_IO_C99_FORMATS |
---|
2226 | if (flags & LONGINT) |
---|
2227 | spec_type = WIDE_CHAR; |
---|
2228 | else |
---|
2229 | # endif |
---|
2230 | spec_type = INT; |
---|
2231 | break; |
---|
2232 | # ifdef _WANT_IO_C99_FORMATS |
---|
2233 | case 'C': |
---|
2234 | spec_type = WIDE_CHAR; |
---|
2235 | break; |
---|
2236 | # endif |
---|
2237 | } |
---|
2238 | |
---|
2239 | /* if we have a positional parameter, just store the type, otherwise |
---|
2240 | fetch the parameter from the vararg list */ |
---|
2241 | if (pos != -1) |
---|
2242 | arg_type[pos] = spec_type; |
---|
2243 | else |
---|
2244 | { |
---|
2245 | switch (spec_type) |
---|
2246 | { |
---|
2247 | case LONG_INT: |
---|
2248 | args[numargs++].val_long = va_arg (*ap, long); |
---|
2249 | break; |
---|
2250 | case QUAD_INT: |
---|
2251 | args[numargs++].val_quad_t = va_arg (*ap, quad_t); |
---|
2252 | break; |
---|
2253 | case WIDE_CHAR: |
---|
2254 | args[numargs++].val_wint_t = va_arg (*ap, wint_t); |
---|
2255 | break; |
---|
2256 | case INT: |
---|
2257 | args[numargs++].val_int = va_arg (*ap, int); |
---|
2258 | break; |
---|
2259 | case CHAR_PTR: |
---|
2260 | args[numargs++].val_char_ptr_t = va_arg (*ap, char *); |
---|
2261 | break; |
---|
2262 | case DOUBLE: |
---|
2263 | args[numargs++].val_double = va_arg (*ap, double); |
---|
2264 | break; |
---|
2265 | case LONG_DOUBLE: |
---|
2266 | args[numargs++].val__LONG_DOUBLE = va_arg (*ap, _LONG_DOUBLE); |
---|
2267 | break; |
---|
2268 | } |
---|
2269 | } |
---|
2270 | } |
---|
2271 | break; |
---|
2272 | case GETPOS: /* we have positional specifier */ |
---|
2273 | if (arg_type[0] == -1) |
---|
2274 | memset (arg_type, 0, sizeof (int) * MAX_POS_ARGS); |
---|
2275 | pos = number - 1; |
---|
2276 | max_pos_arg = (max_pos_arg > pos ? max_pos_arg : pos); |
---|
2277 | break; |
---|
2278 | case PWPOS: /* we have positional specifier for width or precision */ |
---|
2279 | if (arg_type[0] == -1) |
---|
2280 | memset (arg_type, 0, sizeof (int) * MAX_POS_ARGS); |
---|
2281 | number -= 1; |
---|
2282 | arg_type[number] = INT; |
---|
2283 | max_pos_arg = (max_pos_arg > number ? max_pos_arg : number); |
---|
2284 | break; |
---|
2285 | case GETPWB: /* we require format pushback */ |
---|
2286 | --fmt; |
---|
2287 | /* fallthrough */ |
---|
2288 | case GETPW: /* we have a variable precision or width to acquire */ |
---|
2289 | args[numargs++].val_int = va_arg (*ap, int); |
---|
2290 | break; |
---|
2291 | case NUMBER: /* we have a number to process */ |
---|
2292 | number = (ch - '0'); |
---|
2293 | while ((ch = *fmt) != '\0' && is_digit (ch)) |
---|
2294 | { |
---|
2295 | number = number * 10 + (ch - '0'); |
---|
2296 | ++fmt; |
---|
2297 | } |
---|
2298 | break; |
---|
2299 | case SKIPNUM: /* we have a number to skip */ |
---|
2300 | while ((ch = *fmt) != '\0' && is_digit (ch)) |
---|
2301 | ++fmt; |
---|
2302 | break; |
---|
2303 | case NOOP: |
---|
2304 | default: |
---|
2305 | break; /* do nothing */ |
---|
2306 | } |
---|
2307 | } |
---|
2308 | } |
---|
2309 | |
---|
2310 | /* process all arguments up to at least the one we are looking for and if we |
---|
2311 | have seen the end of the string, then process up to the max argument needed */ |
---|
2312 | if (*fmt == '\0') |
---|
2313 | last_arg = max_pos_arg; |
---|
2314 | else |
---|
2315 | last_arg = n; |
---|
2316 | |
---|
2317 | while (numargs <= last_arg) |
---|
2318 | { |
---|
2319 | switch (arg_type[numargs]) |
---|
2320 | { |
---|
2321 | case LONG_INT: |
---|
2322 | args[numargs++].val_long = va_arg (*ap, long); |
---|
2323 | break; |
---|
2324 | case QUAD_INT: |
---|
2325 | args[numargs++].val_quad_t = va_arg (*ap, quad_t); |
---|
2326 | break; |
---|
2327 | case CHAR_PTR: |
---|
2328 | args[numargs++].val_char_ptr_t = va_arg (*ap, char *); |
---|
2329 | break; |
---|
2330 | case DOUBLE: |
---|
2331 | args[numargs++].val_double = va_arg (*ap, double); |
---|
2332 | break; |
---|
2333 | case LONG_DOUBLE: |
---|
2334 | args[numargs++].val__LONG_DOUBLE = va_arg (*ap, _LONG_DOUBLE); |
---|
2335 | break; |
---|
2336 | case WIDE_CHAR: |
---|
2337 | args[numargs++].val_wint_t = va_arg (*ap, wint_t); |
---|
2338 | break; |
---|
2339 | case INT: |
---|
2340 | default: |
---|
2341 | args[numargs++].val_int = va_arg (*ap, int); |
---|
2342 | break; |
---|
2343 | } |
---|
2344 | } |
---|
2345 | |
---|
2346 | /* alter the global numargs value and keep a reference to the last bit of the fmt |
---|
2347 | string we processed here because the caller will continue processing where we started */ |
---|
2348 | *numargs_p = numargs; |
---|
2349 | *last_fmt = fmt; |
---|
2350 | return &args[n]; |
---|
2351 | } |
---|
2352 | #endif /* !_NO_POS_ARGS */ |
---|