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3465
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1 /* Convert a string representation of time to a time value. |
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2 Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. |
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3 This file is part of the GNU C Library. |
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4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. |
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5 |
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6 The GNU C Library is free software; you can redistribute it and/or |
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7 modify it under the terms of the GNU Library General Public License as |
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8 published by the Free Software Foundation; either version 2 of the |
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9 License, or (at your option) any later version. |
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10 |
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11 The GNU C Library is distributed in the hope that it will be useful, |
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 Library General Public License for more details. |
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15 |
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16 You should have received a copy of the GNU Library General Public |
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17 License along with the GNU C Library; see the file COPYING.LIB. If not, |
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18 write to the Free Software Foundation, Inc., 51 Franklin Street, |
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19 Fifth Floor, Boston, MA 02110-1301, USA. */ |
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3465
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20 |
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21 /* XXX This version of the implementation is not really complete. |
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22 Some of the fields cannot add information alone. But if seeing |
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23 some of them in the same format (such as year, week and weekday) |
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24 this is enough information for determining the date. */ |
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25 |
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26 #ifdef HAVE_CONFIG_H |
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27 # include <config.h> |
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28 #endif |
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29 |
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7058
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30 #if ! defined (HAVE_STRPTIME) || defined (OCTAVE_HAVE_BROKEN_STRPTIME) |
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3750
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31 |
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3465
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32 #include <ctype.h> |
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3470
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33 #ifdef _LIBC |
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34 # include <langinfo.h> |
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35 #endif |
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3465
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36 #include <limits.h> |
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37 #include <string.h> |
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38 #include <time.h> |
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39 |
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40 #ifdef _LIBC |
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41 # include "../locale/localeinfo.h" |
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42 #endif |
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43 |
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44 |
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45 #ifndef __P |
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46 # if defined (__GNUC__) || (defined (__STDC__) && __STDC__) |
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47 # define __P(args) args |
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48 # else |
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49 # define __P(args) () |
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50 # endif /* GCC. */ |
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51 #endif /* Not __P. */ |
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52 |
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53 |
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54 #if ! HAVE_LOCALTIME_R && ! defined localtime_r |
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55 # ifdef _LIBC |
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56 # define localtime_r __localtime_r |
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57 # else |
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58 /* Approximate localtime_r as best we can in its absence. */ |
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59 # define localtime_r my_localtime_r |
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60 static struct tm *localtime_r __P ((const time_t *, struct tm *)); |
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61 static struct tm * |
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62 localtime_r (t, tp) |
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63 const time_t *t; |
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64 struct tm *tp; |
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65 { |
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66 struct tm *l = localtime (t); |
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67 if (! l) |
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68 return 0; |
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69 *tp = *l; |
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70 return tp; |
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71 } |
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72 # endif /* ! _LIBC */ |
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73 #endif /* ! HAVE_LOCALTIME_R && ! defined (localtime_r) */ |
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74 |
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75 |
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76 #define match_char(ch1, ch2) if (ch1 != ch2) return NULL |
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77 #if defined __GNUC__ && __GNUC__ >= 2 |
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78 # define match_string(cs1, s2) \ |
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79 ({ size_t len = strlen (cs1); \ |
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80 int result = strncasecmp ((cs1), (s2), len) == 0; \ |
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81 if (result) (s2) += len; \ |
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82 result; }) |
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83 #else |
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84 /* Oh come on. Get a reasonable compiler. */ |
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85 # define match_string(cs1, s2) \ |
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86 (strncasecmp ((cs1), (s2), strlen (cs1)) ? 0 : ((s2) += strlen (cs1), 1)) |
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87 #endif |
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88 /* We intentionally do not use isdigit() for testing because this will |
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89 lead to problems with the wide character version. */ |
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90 #define get_number(from, to, n) \ |
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91 do { \ |
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92 int __n = n; \ |
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93 val = 0; \ |
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94 while (*rp == ' ') \ |
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95 ++rp; \ |
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96 if (*rp < '0' || *rp > '9') \ |
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97 return NULL; \ |
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98 do { \ |
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99 val *= 10; \ |
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100 val += *rp++ - '0'; \ |
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101 } while (--__n > 0 && val * 10 <= to && *rp >= '0' && *rp <= '9'); \ |
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102 if (val < from || val > to) \ |
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103 return NULL; \ |
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104 } while (0) |
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105 #ifdef _NL_CURRENT |
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106 # define get_alt_number(from, to, n) \ |
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107 ({ \ |
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108 __label__ do_normal; \ |
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109 if (*decided != raw) \ |
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110 { \ |
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111 const char *alts = _NL_CURRENT (LC_TIME, ALT_DIGITS); \ |
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112 int __n = n; \ |
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113 int any = 0; \ |
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114 while (*rp == ' ') \ |
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115 ++rp; \ |
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116 val = 0; \ |
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117 do { \ |
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118 val *= 10; \ |
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119 while (*alts != '\0') \ |
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120 { \ |
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121 size_t len = strlen (alts); \ |
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122 if (strncasecmp (alts, rp, len) == 0) \ |
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123 break; \ |
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124 alts += len + 1; \ |
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125 ++val; \ |
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126 } \ |
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127 if (*alts == '\0') \ |
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128 { \ |
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129 if (*decided == not && ! any) \ |
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130 goto do_normal; \ |
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131 /* If we haven't read anything it's an error. */ \ |
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132 if (! any) \ |
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133 return NULL; \ |
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134 /* Correct the premature multiplication. */ \ |
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135 val /= 10; \ |
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136 break; \ |
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137 } \ |
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138 else \ |
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139 *decided = loc; \ |
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140 } while (--__n > 0 && val * 10 <= to); \ |
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141 if (val < from || val > to) \ |
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142 return NULL; \ |
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143 } \ |
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144 else \ |
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145 { \ |
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146 do_normal: \ |
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147 get_number (from, to, n); \ |
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148 } \ |
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149 0; \ |
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150 }) |
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151 #else |
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152 # define get_alt_number(from, to, n) \ |
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153 /* We don't have the alternate representation. */ \ |
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154 get_number(from, to, n) |
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155 #endif |
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156 #define recursive(new_fmt) \ |
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157 (*(new_fmt) != '\0' \ |
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158 && (rp = strptime_internal (rp, (new_fmt), tm, decided)) != NULL) |
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159 |
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160 |
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161 #ifdef _LIBC |
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162 /* This is defined in locale/C-time.c in the GNU libc. */ |
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163 extern const struct locale_data _nl_C_LC_TIME; |
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164 extern const unsigned short int __mon_yday[2][13]; |
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165 |
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166 # define weekday_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (DAY_1)].string) |
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167 # define ab_weekday_name \ |
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168 (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABDAY_1)].string) |
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169 # define month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (MON_1)].string) |
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170 # define ab_month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABMON_1)].string) |
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171 # define HERE_D_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_T_FMT)].string) |
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172 # define HERE_D_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_FMT)].string) |
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173 # define HERE_AM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (AM_STR)].string) |
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174 # define HERE_PM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (PM_STR)].string) |
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175 # define HERE_T_FMT_AMPM \ |
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176 (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT_AMPM)].string) |
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177 # define HERE_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT)].string) |
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178 |
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179 # define strncasecmp(s1, s2, n) __strncasecmp (s1, s2, n) |
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180 #else |
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181 static char const weekday_name[][10] = |
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182 { |
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183 "Sunday", "Monday", "Tuesday", "Wednesday", |
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184 "Thursday", "Friday", "Saturday" |
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185 }; |
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186 static char const ab_weekday_name[][4] = |
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187 { |
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188 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" |
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189 }; |
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190 static char const month_name[][10] = |
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191 { |
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192 "January", "February", "March", "April", "May", "June", |
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193 "July", "August", "September", "October", "November", "December" |
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194 }; |
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195 static char const ab_month_name[][4] = |
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196 { |
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197 "Jan", "Feb", "Mar", "Apr", "May", "Jun", |
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198 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" |
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199 }; |
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200 # define HERE_D_T_FMT "%a %b %e %H:%M:%S %Y" |
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201 # define HERE_D_FMT "%m/%d/%y" |
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202 # define HERE_AM_STR "AM" |
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203 # define HERE_PM_STR "PM" |
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204 # define HERE_T_FMT_AMPM "%I:%M:%S %p" |
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205 # define HERE_T_FMT "%H:%M:%S" |
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206 |
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3504
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207 const unsigned short int __mon_yday[2][13] = |
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3465
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208 { |
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209 /* Normal years. */ |
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210 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }, |
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211 /* Leap years. */ |
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212 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 } |
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213 }; |
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214 #endif |
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215 |
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216 /* Status of lookup: do we use the locale data or the raw data? */ |
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217 enum locale_status { not, loc, raw }; |
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218 |
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219 |
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220 #ifndef __isleap |
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221 /* Nonzero if YEAR is a leap year (every 4 years, |
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222 except every 100th isn't, and every 400th is). */ |
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223 # define __isleap(year) \ |
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224 ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) |
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225 #endif |
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226 |
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227 /* Compute the day of the week. */ |
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228 static void |
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229 day_of_the_week (struct tm *tm) |
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230 { |
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231 /* We know that January 1st 1970 was a Thursday (= 4). Compute the |
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232 the difference between this data in the one on TM and so determine |
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233 the weekday. */ |
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234 int corr_year = 1900 + tm->tm_year - (tm->tm_mon < 2); |
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235 int wday = (-473 |
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236 + (365 * (tm->tm_year - 70)) |
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237 + (corr_year / 4) |
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238 - ((corr_year / 4) / 25) + ((corr_year / 4) % 25 < 0) |
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239 + (((corr_year / 4) / 25) / 4) |
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240 + __mon_yday[0][tm->tm_mon] |
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241 + tm->tm_mday - 1); |
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6205
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242 tm->tm_wday = ((wday % 7) + 7) % 7; |
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3465
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243 } |
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244 |
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245 /* Compute the day of the year. */ |
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246 static void |
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247 day_of_the_year (struct tm *tm) |
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248 { |
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249 tm->tm_yday = (__mon_yday[__isleap (1900 + tm->tm_year)][tm->tm_mon] |
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250 + (tm->tm_mday - 1)); |
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251 } |
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252 |
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253 static char * |
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254 #ifdef _LIBC |
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255 internal_function |
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256 #endif |
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257 strptime_internal __P ((const char *buf, const char *format, struct tm *tm, |
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258 enum locale_status *decided)); |
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259 |
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260 static char * |
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261 #ifdef _LIBC |
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262 internal_function |
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263 #endif |
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264 strptime_internal (buf, format, tm, decided) |
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265 const char *buf; |
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266 const char *format; |
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267 struct tm *tm; |
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268 enum locale_status *decided; |
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269 { |
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270 const char *rp; |
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271 const char *fmt; |
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272 int cnt; |
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273 size_t val; |
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274 int have_I, is_pm; |
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275 int century, want_century; |
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276 int have_wday, want_xday; |
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277 int have_yday; |
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278 int have_mon, have_mday; |
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279 |
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280 rp = buf; |
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281 fmt = format; |
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282 have_I = is_pm = 0; |
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283 century = -1; |
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284 want_century = 0; |
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285 have_wday = want_xday = have_yday = have_mon = have_mday = 0; |
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286 |
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287 while (*fmt != '\0') |
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288 { |
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289 /* A white space in the format string matches 0 more or white |
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290 space in the input string. */ |
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291 if (isspace (*fmt)) |
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292 { |
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293 while (isspace (*rp)) |
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294 ++rp; |
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295 ++fmt; |
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296 continue; |
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297 } |
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298 |
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299 /* Any character but `%' must be matched by the same character |
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300 in the iput string. */ |
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301 if (*fmt != '%') |
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302 { |
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303 match_char (*fmt++, *rp++); |
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304 continue; |
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305 } |
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306 |
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307 ++fmt; |
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308 #ifndef _NL_CURRENT |
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309 /* We need this for handling the `E' modifier. */ |
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310 start_over: |
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311 #endif |
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312 switch (*fmt++) |
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313 { |
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314 case '%': |
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315 /* Match the `%' character itself. */ |
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316 match_char ('%', *rp++); |
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317 break; |
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318 case 'a': |
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319 case 'A': |
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320 /* Match day of week. */ |
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321 for (cnt = 0; cnt < 7; ++cnt) |
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322 { |
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323 #ifdef _NL_CURRENT |
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324 if (*decided !=raw) |
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325 { |
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326 if (match_string (_NL_CURRENT (LC_TIME, DAY_1 + cnt), rp)) |
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327 { |
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328 if (*decided == not |
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329 && strcmp (_NL_CURRENT (LC_TIME, DAY_1 + cnt), |
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330 weekday_name[cnt])) |
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331 *decided = loc; |
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332 break; |
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333 } |
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334 if (match_string (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), rp)) |
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335 { |
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336 if (*decided == not |
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337 && strcmp (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), |
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338 ab_weekday_name[cnt])) |
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339 *decided = loc; |
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340 break; |
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341 } |
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342 } |
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343 #endif |
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344 if (*decided != loc |
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345 && (match_string (weekday_name[cnt], rp) |
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346 || match_string (ab_weekday_name[cnt], rp))) |
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347 { |
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348 *decided = raw; |
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349 break; |
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350 } |
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351 } |
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352 if (cnt == 7) |
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353 /* Does not match a weekday name. */ |
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354 return NULL; |
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355 tm->tm_wday = cnt; |
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356 have_wday = 1; |
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357 break; |
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358 case 'b': |
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359 case 'B': |
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360 case 'h': |
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361 /* Match month name. */ |
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362 for (cnt = 0; cnt < 12; ++cnt) |
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363 { |
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364 #ifdef _NL_CURRENT |
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365 if (*decided !=raw) |
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366 { |
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367 if (match_string (_NL_CURRENT (LC_TIME, MON_1 + cnt), rp)) |
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368 { |
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369 if (*decided == not |
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370 && strcmp (_NL_CURRENT (LC_TIME, MON_1 + cnt), |
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371 month_name[cnt])) |
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372 *decided = loc; |
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373 break; |
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374 } |
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375 if (match_string (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), rp)) |
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376 { |
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377 if (*decided == not |
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378 && strcmp (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), |
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379 ab_month_name[cnt])) |
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380 *decided = loc; |
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381 break; |
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382 } |
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383 } |
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384 #endif |
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385 if (match_string (month_name[cnt], rp) |
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386 || match_string (ab_month_name[cnt], rp)) |
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387 { |
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388 *decided = raw; |
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389 break; |
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390 } |
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391 } |
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392 if (cnt == 12) |
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393 /* Does not match a month name. */ |
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394 return NULL; |
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395 tm->tm_mon = cnt; |
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396 want_xday = 1; |
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397 break; |
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398 case 'c': |
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399 /* Match locale's date and time format. */ |
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400 #ifdef _NL_CURRENT |
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401 if (*decided != raw) |
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402 { |
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403 if (!recursive (_NL_CURRENT (LC_TIME, D_T_FMT))) |
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404 { |
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405 if (*decided == loc) |
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406 return NULL; |
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407 } |
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408 else |
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409 { |
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410 if (*decided == not && |
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411 strcmp (_NL_CURRENT (LC_TIME, D_T_FMT), HERE_D_T_FMT)) |
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412 *decided = loc; |
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413 want_xday = 1; |
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414 break; |
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415 } |
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416 *decided = raw; |
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417 } |
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418 #endif |
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419 if (!recursive (HERE_D_T_FMT)) |
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420 return NULL; |
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421 want_xday = 1; |
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422 break; |
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423 case 'C': |
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424 /* Match century number. */ |
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425 get_number (0, 99, 2); |
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426 century = val; |
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427 want_xday = 1; |
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428 break; |
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429 case 'd': |
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430 case 'e': |
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431 /* Match day of month. */ |
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432 get_number (1, 31, 2); |
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433 tm->tm_mday = val; |
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434 have_mday = 1; |
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435 want_xday = 1; |
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436 break; |
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437 case 'F': |
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438 if (!recursive ("%Y-%m-%d")) |
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439 return NULL; |
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440 want_xday = 1; |
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441 break; |
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442 case 'x': |
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443 #ifdef _NL_CURRENT |
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444 if (*decided != raw) |
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445 { |
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446 if (!recursive (_NL_CURRENT (LC_TIME, D_FMT))) |
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447 { |
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448 if (*decided == loc) |
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449 return NULL; |
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450 } |
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451 else |
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452 { |
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453 if (decided == not |
|
|
454 && strcmp (_NL_CURRENT (LC_TIME, D_FMT), HERE_D_FMT)) |
|
|
455 *decided = loc; |
|
|
456 want_xday = 1; |
|
|
457 break; |
|
|
458 } |
|
|
459 *decided = raw; |
|
|
460 } |
|
|
461 #endif |
|
|
462 /* Fall through. */ |
|
|
463 case 'D': |
|
|
464 /* Match standard day format. */ |
|
|
465 if (!recursive (HERE_D_FMT)) |
|
|
466 return NULL; |
|
|
467 want_xday = 1; |
|
|
468 break; |
|
|
469 case 'k': |
|
|
470 case 'H': |
|
|
471 /* Match hour in 24-hour clock. */ |
|
|
472 get_number (0, 23, 2); |
|
|
473 tm->tm_hour = val; |
|
|
474 have_I = 0; |
|
|
475 break; |
|
|
476 case 'I': |
|
|
477 /* Match hour in 12-hour clock. */ |
|
|
478 get_number (1, 12, 2); |
|
|
479 tm->tm_hour = val % 12; |
|
|
480 have_I = 1; |
|
|
481 break; |
|
|
482 case 'j': |
|
|
483 /* Match day number of year. */ |
|
|
484 get_number (1, 366, 3); |
|
|
485 tm->tm_yday = val - 1; |
|
|
486 have_yday = 1; |
|
|
487 break; |
|
|
488 case 'm': |
|
|
489 /* Match number of month. */ |
|
|
490 get_number (1, 12, 2); |
|
|
491 tm->tm_mon = val - 1; |
|
|
492 have_mon = 1; |
|
|
493 want_xday = 1; |
|
|
494 break; |
|
|
495 case 'M': |
|
|
496 /* Match minute. */ |
|
|
497 get_number (0, 59, 2); |
|
|
498 tm->tm_min = val; |
|
|
499 break; |
|
|
500 case 'n': |
|
|
501 case 't': |
|
|
502 /* Match any white space. */ |
|
|
503 while (isspace (*rp)) |
|
|
504 ++rp; |
|
|
505 break; |
|
|
506 case 'p': |
|
|
507 /* Match locale's equivalent of AM/PM. */ |
|
|
508 #ifdef _NL_CURRENT |
|
|
509 if (*decided != raw) |
|
|
510 { |
|
|
511 if (match_string (_NL_CURRENT (LC_TIME, AM_STR), rp)) |
|
|
512 { |
|
|
513 if (strcmp (_NL_CURRENT (LC_TIME, AM_STR), HERE_AM_STR)) |
|
|
514 *decided = loc; |
|
|
515 break; |
|
|
516 } |
|
|
517 if (match_string (_NL_CURRENT (LC_TIME, PM_STR), rp)) |
|
|
518 { |
|
|
519 if (strcmp (_NL_CURRENT (LC_TIME, PM_STR), HERE_PM_STR)) |
|
|
520 *decided = loc; |
|
|
521 is_pm = 1; |
|
|
522 break; |
|
|
523 } |
|
|
524 *decided = raw; |
|
|
525 } |
|
|
526 #endif |
|
|
527 if (!match_string (HERE_AM_STR, rp)) |
|
|
528 if (match_string (HERE_PM_STR, rp)) |
|
|
529 is_pm = 1; |
|
|
530 else |
|
|
531 return NULL; |
|
|
532 break; |
|
|
533 case 'r': |
|
|
534 #ifdef _NL_CURRENT |
|
|
535 if (*decided != raw) |
|
|
536 { |
|
|
537 if (!recursive (_NL_CURRENT (LC_TIME, T_FMT_AMPM))) |
|
|
538 { |
|
|
539 if (*decided == loc) |
|
|
540 return NULL; |
|
|
541 } |
|
|
542 else |
|
|
543 { |
|
|
544 if (*decided == not && |
|
|
545 strcmp (_NL_CURRENT (LC_TIME, T_FMT_AMPM), |
|
|
546 HERE_T_FMT_AMPM)) |
|
|
547 *decided = loc; |
|
|
548 break; |
|
|
549 } |
|
|
550 *decided = raw; |
|
|
551 } |
|
|
552 #endif |
|
|
553 if (!recursive (HERE_T_FMT_AMPM)) |
|
|
554 return NULL; |
|
|
555 break; |
|
|
556 case 'R': |
|
|
557 if (!recursive ("%H:%M")) |
|
|
558 return NULL; |
|
|
559 break; |
|
|
560 case 's': |
|
|
561 { |
|
|
562 /* The number of seconds may be very high so we cannot use |
|
|
563 the `get_number' macro. Instead read the number |
|
|
564 character for character and construct the result while |
|
|
565 doing this. */ |
|
|
566 time_t secs = 0; |
|
|
567 if (*rp < '0' || *rp > '9') |
|
|
568 /* We need at least one digit. */ |
|
|
569 return NULL; |
|
|
570 |
|
|
571 do |
|
|
572 { |
|
|
573 secs *= 10; |
|
|
574 secs += *rp++ - '0'; |
|
|
575 } |
|
|
576 while (*rp >= '0' && *rp <= '9'); |
|
|
577 |
|
|
578 if (localtime_r (&secs, tm) == NULL) |
|
|
579 /* Error in function. */ |
|
|
580 return NULL; |
|
|
581 } |
|
|
582 break; |
|
|
583 case 'S': |
|
|
584 get_number (0, 61, 2); |
|
|
585 tm->tm_sec = val; |
|
|
586 break; |
|
|
587 case 'X': |
|
|
588 #ifdef _NL_CURRENT |
|
|
589 if (*decided != raw) |
|
|
590 { |
|
|
591 if (!recursive (_NL_CURRENT (LC_TIME, T_FMT))) |
|
|
592 { |
|
|
593 if (*decided == loc) |
|
|
594 return NULL; |
|
|
595 } |
|
|
596 else |
|
|
597 { |
|
|
598 if (strcmp (_NL_CURRENT (LC_TIME, T_FMT), HERE_T_FMT)) |
|
|
599 *decided = loc; |
|
|
600 break; |
|
|
601 } |
|
|
602 *decided = raw; |
|
|
603 } |
|
|
604 #endif |
|
|
605 /* Fall through. */ |
|
|
606 case 'T': |
|
|
607 if (!recursive (HERE_T_FMT)) |
|
|
608 return NULL; |
|
|
609 break; |
|
|
610 case 'u': |
|
|
611 get_number (1, 7, 1); |
|
|
612 tm->tm_wday = val % 7; |
|
|
613 have_wday = 1; |
|
|
614 break; |
|
|
615 case 'g': |
|
|
616 get_number (0, 99, 2); |
|
|
617 /* XXX This cannot determine any field in TM. */ |
|
|
618 break; |
|
|
619 case 'G': |
|
|
620 if (*rp < '0' || *rp > '9') |
|
|
621 return NULL; |
|
|
622 /* XXX Ignore the number since we would need some more |
|
|
623 information to compute a real date. */ |
|
|
624 do |
|
|
625 ++rp; |
|
|
626 while (*rp >= '0' && *rp <= '9'); |
|
|
627 break; |
|
|
628 case 'U': |
|
|
629 case 'V': |
|
|
630 case 'W': |
|
|
631 get_number (0, 53, 2); |
|
|
632 /* XXX This cannot determine any field in TM without some |
|
|
633 information. */ |
|
|
634 break; |
|
|
635 case 'w': |
|
|
636 /* Match number of weekday. */ |
|
|
637 get_number (0, 6, 1); |
|
|
638 tm->tm_wday = val; |
|
|
639 have_wday = 1; |
|
|
640 break; |
|
|
641 case 'y': |
|
|
642 /* Match year within century. */ |
|
|
643 get_number (0, 99, 2); |
|
|
644 /* The "Year 2000: The Millennium Rollover" paper suggests that |
|
|
645 values in the range 69-99 refer to the twentieth century. */ |
|
|
646 tm->tm_year = val >= 69 ? val : val + 100; |
|
|
647 /* Indicate that we want to use the century, if specified. */ |
|
|
648 want_century = 1; |
|
|
649 want_xday = 1; |
|
|
650 break; |
|
|
651 case 'Y': |
|
|
652 /* Match year including century number. */ |
|
|
653 get_number (0, 9999, 4); |
|
|
654 tm->tm_year = val - 1900; |
|
|
655 want_century = 0; |
|
|
656 want_xday = 1; |
|
|
657 break; |
|
|
658 case 'Z': |
|
|
659 /* XXX How to handle this? */ |
|
|
660 break; |
|
|
661 case 'E': |
|
|
662 #ifdef _NL_CURRENT |
|
|
663 switch (*fmt++) |
|
|
664 { |
|
|
665 case 'c': |
|
|
666 /* Match locale's alternate date and time format. */ |
|
|
667 if (*decided != raw) |
|
|
668 { |
|
|
669 const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT); |
|
|
670 |
|
|
671 if (*fmt == '\0') |
|
|
672 fmt = _NL_CURRENT (LC_TIME, D_T_FMT); |
|
|
673 |
|
|
674 if (!recursive (fmt)) |
|
|
675 { |
|
|
676 if (*decided == loc) |
|
|
677 return NULL; |
|
|
678 } |
|
|
679 else |
|
|
680 { |
|
|
681 if (strcmp (fmt, HERE_D_T_FMT)) |
|
|
682 *decided = loc; |
|
|
683 want_xday = 1; |
|
|
684 break; |
|
|
685 } |
|
|
686 *decided = raw; |
|
|
687 } |
|
|
688 /* The C locale has no era information, so use the |
|
|
689 normal representation. */ |
|
|
690 if (!recursive (HERE_D_T_FMT)) |
|
|
691 return NULL; |
|
|
692 want_xday = 1; |
|
|
693 break; |
|
|
694 case 'C': |
|
|
695 case 'y': |
|
|
696 case 'Y': |
|
|
697 /* Match name of base year in locale's alternate |
|
|
698 representation. */ |
|
|
699 /* XXX This is currently not implemented. It should |
|
|
700 use the value _NL_CURRENT (LC_TIME, ERA). */ |
|
|
701 break; |
|
|
702 case 'x': |
|
|
703 if (*decided != raw) |
|
|
704 { |
|
|
705 const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_FMT); |
|
|
706 |
|
|
707 if (*fmt == '\0') |
|
|
708 fmt = _NL_CURRENT (LC_TIME, D_FMT); |
|
|
709 |
|
|
710 if (!recursive (fmt)) |
|
|
711 { |
|
|
712 if (*decided == loc) |
|
|
713 return NULL; |
|
|
714 } |
|
|
715 else |
|
|
716 { |
|
|
717 if (strcmp (fmt, HERE_D_FMT)) |
|
|
718 *decided = loc; |
|
|
719 break; |
|
|
720 } |
|
|
721 *decided = raw; |
|
|
722 } |
|
|
723 if (!recursive (HERE_D_FMT)) |
|
|
724 return NULL; |
|
|
725 break; |
|
|
726 case 'X': |
|
|
727 if (*decided != raw) |
|
|
728 { |
|
|
729 const char *fmt = _NL_CURRENT (LC_TIME, ERA_T_FMT); |
|
|
730 |
|
|
731 if (*fmt == '\0') |
|
|
732 fmt = _NL_CURRENT (LC_TIME, T_FMT); |
|
|
733 |
|
|
734 if (!recursive (fmt)) |
|
|
735 { |
|
|
736 if (*decided == loc) |
|
|
737 return NULL; |
|
|
738 } |
|
|
739 else |
|
|
740 { |
|
|
741 if (strcmp (fmt, HERE_T_FMT)) |
|
|
742 *decided = loc; |
|
|
743 break; |
|
|
744 } |
|
|
745 *decided = raw; |
|
|
746 } |
|
|
747 if (!recursive (HERE_T_FMT)) |
|
|
748 return NULL; |
|
|
749 break; |
|
|
750 default: |
|
|
751 return NULL; |
|
|
752 } |
|
|
753 break; |
|
|
754 #else |
|
|
755 /* We have no information about the era format. Just use |
|
|
756 the normal format. */ |
|
|
757 if (*fmt != 'c' && *fmt != 'C' && *fmt != 'y' && *fmt != 'Y' |
|
|
758 && *fmt != 'x' && *fmt != 'X') |
|
|
759 /* This is an illegal format. */ |
|
|
760 return NULL; |
|
|
761 |
|
|
762 goto start_over; |
|
|
763 #endif |
|
|
764 case 'O': |
|
|
765 switch (*fmt++) |
|
|
766 { |
|
|
767 case 'd': |
|
|
768 case 'e': |
|
|
769 /* Match day of month using alternate numeric symbols. */ |
|
|
770 get_alt_number (1, 31, 2); |
|
|
771 tm->tm_mday = val; |
|
|
772 have_mday = 1; |
|
|
773 want_xday = 1; |
|
|
774 break; |
|
|
775 case 'H': |
|
|
776 /* Match hour in 24-hour clock using alternate numeric |
|
|
777 symbols. */ |
|
|
778 get_alt_number (0, 23, 2); |
|
|
779 tm->tm_hour = val; |
|
|
780 have_I = 0; |
|
|
781 break; |
|
|
782 case 'I': |
|
|
783 /* Match hour in 12-hour clock using alternate numeric |
|
|
784 symbols. */ |
|
|
785 get_alt_number (1, 12, 2); |
|
|
786 tm->tm_hour = val - 1; |
|
|
787 have_I = 1; |
|
|
788 break; |
|
|
789 case 'm': |
|
|
790 /* Match month using alternate numeric symbols. */ |
|
|
791 get_alt_number (1, 12, 2); |
|
|
792 tm->tm_mon = val - 1; |
|
|
793 have_mon = 1; |
|
|
794 want_xday = 1; |
|
|
795 break; |
|
|
796 case 'M': |
|
|
797 /* Match minutes using alternate numeric symbols. */ |
|
|
798 get_alt_number (0, 59, 2); |
|
|
799 tm->tm_min = val; |
|
|
800 break; |
|
|
801 case 'S': |
|
|
802 /* Match seconds using alternate numeric symbols. */ |
|
|
803 get_alt_number (0, 61, 2); |
|
|
804 tm->tm_sec = val; |
|
|
805 break; |
|
|
806 case 'U': |
|
|
807 case 'V': |
|
|
808 case 'W': |
|
|
809 get_alt_number (0, 53, 2); |
|
|
810 /* XXX This cannot determine any field in TM without |
|
|
811 further information. */ |
|
|
812 break; |
|
|
813 case 'w': |
|
|
814 /* Match number of weekday using alternate numeric symbols. */ |
|
|
815 get_alt_number (0, 6, 1); |
|
|
816 tm->tm_wday = val; |
|
|
817 have_wday = 1; |
|
|
818 break; |
|
|
819 case 'y': |
|
|
820 /* Match year within century using alternate numeric symbols. */ |
|
|
821 get_alt_number (0, 99, 2); |
|
|
822 tm->tm_year = val >= 69 ? val : val + 100; |
|
|
823 want_xday = 1; |
|
|
824 break; |
|
|
825 default: |
|
|
826 return NULL; |
|
|
827 } |
|
|
828 break; |
|
|
829 default: |
|
|
830 return NULL; |
|
|
831 } |
|
|
832 } |
|
|
833 |
|
|
834 if (have_I && is_pm) |
|
|
835 tm->tm_hour += 12; |
|
|
836 |
|
|
837 if (want_century && century != -1) |
|
|
838 tm->tm_year = tm->tm_year % 100 + (century - 19) * 100; |
|
|
839 |
|
|
840 if (want_xday && !have_wday) { |
|
|
841 if ( !(have_mon && have_mday) && have_yday) { |
|
|
842 /* we don't have tm_mon and/or tm_mday, compute them */ |
|
|
843 int t_mon = 0; |
|
|
844 while (__mon_yday[__isleap(1900 + tm->tm_year)][t_mon] <= tm->tm_yday) |
|
|
845 t_mon++; |
|
|
846 if (!have_mon) |
|
|
847 tm->tm_mon = t_mon - 1; |
|
|
848 if (!have_mday) |
|
|
849 tm->tm_mday = tm->tm_yday - __mon_yday[__isleap(1900 + tm->tm_year)][t_mon - 1] + 1; |
|
|
850 } |
|
|
851 day_of_the_week (tm); |
|
|
852 } |
|
|
853 if (want_xday && !have_yday) |
|
|
854 day_of_the_year (tm); |
|
|
855 |
|
|
856 return (char *) rp; |
|
|
857 } |
|
|
858 |
|
|
859 |
|
|
860 char * |
|
|
861 strptime (buf, format, tm) |
|
|
862 const char *buf; |
|
|
863 const char *format; |
|
|
864 struct tm *tm; |
|
|
865 { |
|
|
866 enum locale_status decided; |
|
|
867 #ifdef _NL_CURRENT |
|
|
868 decided = not; |
|
|
869 #else |
|
|
870 decided = raw; |
|
|
871 #endif |
|
|
872 return strptime_internal (buf, format, tm, &decided); |
|
|
873 } |
|
3750
|
874 |
|
|
875 #endif |
