1 | %{ |
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2 | /* Parse a string into an internal time stamp. |
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3 | Copyright 1999, 2000 Free Software Foundation, Inc. |
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4 | |
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5 | This program is free software; you can redistribute it and/or modify |
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6 | it under the terms of the GNU General Public License as published by |
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7 | the Free Software Foundation; either version 2, or (at your option) |
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8 | any later version. |
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9 | |
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10 | This program is distributed in the hope that it will be useful, |
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | GNU General Public License for more details. |
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14 | |
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15 | You should have received a copy of the GNU General Public License |
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16 | along with this program; if not, write to the Free Software Foundation, |
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17 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
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18 | |
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19 | /* Originally written by Steven M. Bellovin <smb@research.att.com> while |
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20 | at the University of North Carolina at Chapel Hill. Later tweaked by |
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21 | a couple of people on Usenet. Completely overhauled by Rich $alz |
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22 | <rsalz@bbn.com> and Jim Berets <jberets@bbn.com> in August, 1990. |
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23 | |
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24 | Modified by Paul Eggert <eggert@twinsun.com> in August 1999 to do |
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25 | the right thing about local DST. Unlike previous versions, this |
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26 | version is reentrant. */ |
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27 | |
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28 | #ifdef HAVE_CONFIG_H |
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29 | # include <config.h> |
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30 | # ifdef HAVE_ALLOCA_H |
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31 | # include <alloca.h> |
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32 | # endif |
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33 | #endif |
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34 | |
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35 | /* Since the code of getdate.y is not included in the Emacs executable |
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36 | itself, there is no need to #define static in this file. Even if |
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37 | the code were included in the Emacs executable, it probably |
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38 | wouldn't do any harm to #undef it here; this will only cause |
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39 | problems if we try to write to a static variable, which I don't |
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40 | think this code needs to do. */ |
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41 | #ifdef emacs |
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42 | # undef static |
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43 | #endif |
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44 | |
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45 | #include <ctype.h> |
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46 | |
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47 | #if HAVE_STDLIB_H |
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48 | # include <stdlib.h> /* for `free'; used by Bison 1.27 */ |
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49 | #endif |
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50 | |
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51 | #if STDC_HEADERS || (! defined isascii && ! HAVE_ISASCII) |
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52 | # define IN_CTYPE_DOMAIN(c) 1 |
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53 | #else |
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54 | # define IN_CTYPE_DOMAIN(c) isascii (c) |
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55 | #endif |
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56 | |
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57 | #define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c)) |
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58 | #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c)) |
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59 | #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c)) |
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60 | #define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (c)) |
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61 | |
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62 | /* ISDIGIT differs from ISDIGIT_LOCALE, as follows: |
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63 | - Its arg may be any int or unsigned int; it need not be an unsigned char. |
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64 | - It's guaranteed to evaluate its argument exactly once. |
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65 | - It's typically faster. |
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66 | Posix 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that |
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67 | only '0' through '9' are digits. Prefer ISDIGIT to ISDIGIT_LOCALE unless |
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68 | it's important to use the locale's definition of `digit' even when the |
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69 | host does not conform to Posix. */ |
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70 | #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9) |
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71 | |
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72 | #if STDC_HEADERS || HAVE_STRING_H |
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73 | # include <string.h> |
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74 | #endif |
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75 | |
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76 | #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__ |
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77 | # define __attribute__(x) |
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78 | #endif |
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79 | |
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80 | #ifndef ATTRIBUTE_UNUSED |
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81 | # define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) |
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82 | #endif |
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83 | |
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84 | #define EPOCH_YEAR 1970 |
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85 | #define TM_YEAR_BASE 1900 |
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86 | |
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87 | #define HOUR(x) ((x) * 60) |
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88 | |
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89 | /* An integer value, and the number of digits in its textual |
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90 | representation. */ |
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91 | typedef struct |
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92 | { |
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93 | int value; |
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94 | int digits; |
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95 | } textint; |
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96 | |
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97 | /* An entry in the lexical lookup table. */ |
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98 | typedef struct |
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99 | { |
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100 | char const *name; |
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101 | int type; |
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102 | int value; |
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103 | } table; |
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104 | |
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105 | /* Meridian: am, pm, or 24-hour style. */ |
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106 | enum { MERam, MERpm, MER24 }; |
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107 | |
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108 | /* Information passed to and from the parser. */ |
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109 | typedef struct |
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110 | { |
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111 | /* The input string remaining to be parsed. */ |
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112 | const char *input; |
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113 | |
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114 | /* N, if this is the Nth Tuesday. */ |
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115 | int day_ordinal; |
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116 | |
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117 | /* Day of week; Sunday is 0. */ |
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118 | int day_number; |
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119 | |
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120 | /* tm_isdst flag for the local zone. */ |
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121 | int local_isdst; |
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122 | |
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123 | /* Time zone, in minutes east of UTC. */ |
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124 | int time_zone; |
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125 | |
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126 | /* Style used for time. */ |
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127 | int meridian; |
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128 | |
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129 | /* Gregorian year, month, day, hour, minutes, and seconds. */ |
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130 | textint year; |
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131 | int month; |
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132 | int day; |
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133 | int hour; |
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134 | int minutes; |
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135 | int seconds; |
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136 | |
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137 | /* Relative year, month, day, hour, minutes, and seconds. */ |
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138 | int rel_year; |
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139 | int rel_month; |
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140 | int rel_day; |
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141 | int rel_hour; |
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142 | int rel_minutes; |
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143 | int rel_seconds; |
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144 | |
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145 | /* Counts of nonterminals of various flavors parsed so far. */ |
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146 | int dates_seen; |
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147 | int days_seen; |
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148 | int local_zones_seen; |
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149 | int rels_seen; |
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150 | int times_seen; |
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151 | int zones_seen; |
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152 | |
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153 | /* Table of local time zone abbrevations, terminated by a null entry. */ |
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154 | table local_time_zone_table[3]; |
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155 | } parser_control; |
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156 | |
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157 | #define PC (* (parser_control *) parm) |
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158 | #define YYLEX_PARAM parm |
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159 | #define YYPARSE_PARAM parm |
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160 | |
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161 | static int yyerror (); |
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162 | static int yylex (); |
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163 | |
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164 | %} |
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165 | |
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166 | /* We want a reentrant parser. */ |
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167 | %pure_parser |
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168 | |
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169 | /* This grammar has 13 shift/reduce conflicts. */ |
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170 | %expect 13 |
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171 | |
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172 | %union |
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173 | { |
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174 | int intval; |
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175 | textint textintval; |
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176 | } |
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177 | |
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178 | %token tAGO tDST |
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179 | |
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180 | %token <intval> tDAY tDAY_UNIT tDAYZONE tHOUR_UNIT tLOCAL_ZONE tMERIDIAN |
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181 | %token <intval> tMINUTE_UNIT tMONTH tMONTH_UNIT tSEC_UNIT tYEAR_UNIT tZONE |
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182 | |
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183 | %token <textintval> tSNUMBER tUNUMBER |
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184 | |
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185 | %type <intval> o_merid |
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186 | |
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187 | %% |
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188 | |
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189 | spec: |
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190 | /* empty */ |
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191 | | spec item |
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192 | ; |
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193 | |
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194 | item: |
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195 | time |
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196 | { PC.times_seen++; } |
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197 | | local_zone |
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198 | { PC.local_zones_seen++; } |
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199 | | zone |
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200 | { PC.zones_seen++; } |
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201 | | date |
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202 | { PC.dates_seen++; } |
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203 | | day |
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204 | { PC.days_seen++; } |
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205 | | rel |
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206 | { PC.rels_seen++; } |
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207 | | number |
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208 | ; |
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209 | |
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210 | time: |
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211 | tUNUMBER tMERIDIAN |
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212 | { |
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213 | PC.hour = $1.value; |
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214 | PC.minutes = 0; |
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215 | PC.seconds = 0; |
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216 | PC.meridian = $2; |
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217 | } |
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218 | | tUNUMBER ':' tUNUMBER o_merid |
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219 | { |
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220 | PC.hour = $1.value; |
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221 | PC.minutes = $3.value; |
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222 | PC.seconds = 0; |
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223 | PC.meridian = $4; |
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224 | } |
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225 | | tUNUMBER ':' tUNUMBER tSNUMBER |
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226 | { |
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227 | PC.hour = $1.value; |
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228 | PC.minutes = $3.value; |
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229 | PC.meridian = MER24; |
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230 | PC.zones_seen++; |
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231 | PC.time_zone = $4.value % 100 + ($4.value / 100) * 60; |
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232 | } |
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233 | | tUNUMBER ':' tUNUMBER ':' tUNUMBER o_merid |
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234 | { |
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235 | PC.hour = $1.value; |
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236 | PC.minutes = $3.value; |
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237 | PC.seconds = $5.value; |
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238 | PC.meridian = $6; |
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239 | } |
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240 | | tUNUMBER ':' tUNUMBER ':' tUNUMBER tSNUMBER |
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241 | { |
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242 | PC.hour = $1.value; |
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243 | PC.minutes = $3.value; |
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244 | PC.seconds = $5.value; |
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245 | PC.meridian = MER24; |
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246 | PC.zones_seen++; |
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247 | PC.time_zone = $6.value % 100 + ($6.value / 100) * 60; |
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248 | } |
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249 | ; |
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250 | |
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251 | local_zone: |
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252 | tLOCAL_ZONE |
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253 | { PC.local_isdst = $1; } |
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254 | | tLOCAL_ZONE tDST |
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255 | { PC.local_isdst = $1 < 0 ? 1 : $1 + 1; } |
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256 | ; |
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257 | |
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258 | zone: |
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259 | tZONE |
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260 | { PC.time_zone = $1; } |
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261 | | tDAYZONE |
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262 | { PC.time_zone = $1 + 60; } |
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263 | | tZONE tDST |
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264 | { PC.time_zone = $1 + 60; } |
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265 | ; |
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266 | |
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267 | day: |
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268 | tDAY |
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269 | { |
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270 | PC.day_ordinal = 1; |
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271 | PC.day_number = $1; |
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272 | } |
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273 | | tDAY ',' |
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274 | { |
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275 | PC.day_ordinal = 1; |
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276 | PC.day_number = $1; |
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277 | } |
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278 | | tUNUMBER tDAY |
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279 | { |
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280 | PC.day_ordinal = $1.value; |
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281 | PC.day_number = $2; |
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282 | } |
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283 | ; |
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284 | |
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285 | date: |
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286 | tUNUMBER '/' tUNUMBER |
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287 | { |
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288 | PC.month = $1.value; |
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289 | PC.day = $3.value; |
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290 | } |
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291 | | tUNUMBER '/' tUNUMBER '/' tUNUMBER |
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292 | { |
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293 | /* Interpret as YYYY/MM/DD if the first value has 4 or more digits, |
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294 | otherwise as MM/DD/YY. |
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295 | The goal in recognizing YYYY/MM/DD is solely to support legacy |
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296 | machine-generated dates like those in an RCS log listing. If |
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297 | you want portability, use the ISO 8601 format. */ |
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298 | if (4 <= $1.digits) |
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299 | { |
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300 | PC.year = $1; |
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301 | PC.month = $3.value; |
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302 | PC.day = $5.value; |
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303 | } |
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304 | else |
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305 | { |
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306 | PC.month = $1.value; |
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307 | PC.day = $3.value; |
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308 | PC.year = $5; |
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309 | } |
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310 | } |
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311 | | tUNUMBER tSNUMBER tSNUMBER |
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312 | { |
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313 | /* ISO 8601 format. YYYY-MM-DD. */ |
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314 | PC.year = $1; |
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315 | PC.month = -$2.value; |
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316 | PC.day = -$3.value; |
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317 | } |
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318 | | tUNUMBER tMONTH tSNUMBER |
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319 | { |
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320 | /* e.g. 17-JUN-1992. */ |
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321 | PC.day = $1.value; |
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322 | PC.month = $2; |
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323 | PC.year.value = -$3.value; |
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324 | PC.year.digits = $3.digits; |
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325 | } |
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326 | | tMONTH tUNUMBER |
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327 | { |
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328 | PC.month = $1; |
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329 | PC.day = $2.value; |
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330 | } |
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331 | | tMONTH tUNUMBER ',' tUNUMBER |
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332 | { |
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333 | PC.month = $1; |
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334 | PC.day = $2.value; |
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335 | PC.year = $4; |
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336 | } |
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337 | | tUNUMBER tMONTH |
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338 | { |
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339 | PC.day = $1.value; |
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340 | PC.month = $2; |
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341 | } |
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342 | | tUNUMBER tMONTH tUNUMBER |
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343 | { |
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344 | PC.day = $1.value; |
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345 | PC.month = $2; |
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346 | PC.year = $3; |
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347 | } |
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348 | ; |
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349 | |
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350 | rel: |
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351 | relunit tAGO |
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352 | { |
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353 | PC.rel_seconds = -PC.rel_seconds; |
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354 | PC.rel_minutes = -PC.rel_minutes; |
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355 | PC.rel_hour = -PC.rel_hour; |
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356 | PC.rel_day = -PC.rel_day; |
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357 | PC.rel_month = -PC.rel_month; |
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358 | PC.rel_year = -PC.rel_year; |
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359 | } |
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360 | | relunit |
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361 | ; |
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362 | |
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363 | relunit: |
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364 | tUNUMBER tYEAR_UNIT |
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365 | { PC.rel_year += $1.value * $2; } |
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366 | | tSNUMBER tYEAR_UNIT |
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367 | { PC.rel_year += $1.value * $2; } |
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368 | | tYEAR_UNIT |
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369 | { PC.rel_year += $1; } |
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370 | | tUNUMBER tMONTH_UNIT |
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371 | { PC.rel_month += $1.value * $2; } |
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372 | | tSNUMBER tMONTH_UNIT |
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373 | { PC.rel_month += $1.value * $2; } |
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374 | | tMONTH_UNIT |
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375 | { PC.rel_month += $1; } |
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376 | | tUNUMBER tDAY_UNIT |
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377 | { PC.rel_day += $1.value * $2; } |
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378 | | tSNUMBER tDAY_UNIT |
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379 | { PC.rel_day += $1.value * $2; } |
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380 | | tDAY_UNIT |
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381 | { PC.rel_day += $1; } |
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382 | | tUNUMBER tHOUR_UNIT |
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383 | { PC.rel_hour += $1.value * $2; } |
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384 | | tSNUMBER tHOUR_UNIT |
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385 | { PC.rel_hour += $1.value * $2; } |
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386 | | tHOUR_UNIT |
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387 | { PC.rel_hour += $1; } |
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388 | | tUNUMBER tMINUTE_UNIT |
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389 | { PC.rel_minutes += $1.value * $2; } |
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390 | | tSNUMBER tMINUTE_UNIT |
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391 | { PC.rel_minutes += $1.value * $2; } |
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392 | | tMINUTE_UNIT |
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393 | { PC.rel_minutes += $1; } |
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394 | | tUNUMBER tSEC_UNIT |
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395 | { PC.rel_seconds += $1.value * $2; } |
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396 | | tSNUMBER tSEC_UNIT |
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397 | { PC.rel_seconds += $1.value * $2; } |
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398 | | tSEC_UNIT |
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399 | { PC.rel_seconds += $1; } |
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400 | ; |
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401 | |
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402 | number: |
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403 | tUNUMBER |
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404 | { |
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405 | if (PC.dates_seen |
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406 | && ! PC.rels_seen && (PC.times_seen || 2 < $1.digits)) |
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407 | PC.year = $1; |
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408 | else |
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409 | { |
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410 | if (4 < $1.digits) |
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411 | { |
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412 | PC.dates_seen++; |
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413 | PC.day = $1.value % 100; |
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414 | PC.month = ($1.value / 100) % 100; |
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415 | PC.year.value = $1.value / 10000; |
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416 | PC.year.digits = $1.digits - 4; |
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417 | } |
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418 | else |
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419 | { |
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420 | PC.times_seen++; |
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421 | if ($1.digits <= 2) |
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422 | { |
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423 | PC.hour = $1.value; |
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424 | PC.minutes = 0; |
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425 | } |
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426 | else |
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427 | { |
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428 | PC.hour = $1.value / 100; |
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429 | PC.minutes = $1.value % 100; |
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430 | } |
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431 | PC.seconds = 0; |
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432 | PC.meridian = MER24; |
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433 | } |
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434 | } |
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435 | } |
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436 | ; |
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437 | |
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438 | o_merid: |
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439 | /* empty */ |
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440 | { $$ = MER24; } |
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441 | | tMERIDIAN |
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442 | { $$ = $1; } |
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443 | ; |
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444 | |
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445 | %% |
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446 | |
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447 | /* Include this file down here because bison inserts code above which |
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448 | may define-away `const'. We want the prototype for get_date to have |
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449 | the same signature as the function definition. */ |
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450 | #include "getdate.h" |
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451 | |
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452 | #ifndef gmtime |
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453 | struct tm *gmtime (); |
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454 | #endif |
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455 | #ifndef localtime |
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456 | struct tm *localtime (); |
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457 | #endif |
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458 | #ifndef mktime |
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459 | time_t mktime (); |
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460 | #endif |
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461 | |
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462 | static table const meridian_table[] = |
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463 | { |
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464 | { "AM", tMERIDIAN, MERam }, |
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465 | { "A.M.", tMERIDIAN, MERam }, |
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466 | { "PM", tMERIDIAN, MERpm }, |
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467 | { "P.M.", tMERIDIAN, MERpm }, |
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468 | { 0, 0, 0 } |
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469 | }; |
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470 | |
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471 | static table const dst_table[] = |
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472 | { |
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473 | { "DST", tDST, 0 } |
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474 | }; |
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475 | |
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476 | static table const month_and_day_table[] = |
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477 | { |
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478 | { "JANUARY", tMONTH, 1 }, |
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479 | { "FEBRUARY", tMONTH, 2 }, |
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480 | { "MARCH", tMONTH, 3 }, |
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481 | { "APRIL", tMONTH, 4 }, |
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482 | { "MAY", tMONTH, 5 }, |
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483 | { "JUNE", tMONTH, 6 }, |
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484 | { "JULY", tMONTH, 7 }, |
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485 | { "AUGUST", tMONTH, 8 }, |
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486 | { "SEPTEMBER",tMONTH, 9 }, |
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487 | { "SEPT", tMONTH, 9 }, |
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488 | { "OCTOBER", tMONTH, 10 }, |
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489 | { "NOVEMBER", tMONTH, 11 }, |
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490 | { "DECEMBER", tMONTH, 12 }, |
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491 | { "SUNDAY", tDAY, 0 }, |
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492 | { "MONDAY", tDAY, 1 }, |
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493 | { "TUESDAY", tDAY, 2 }, |
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494 | { "TUES", tDAY, 2 }, |
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495 | { "WEDNESDAY",tDAY, 3 }, |
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496 | { "WEDNES", tDAY, 3 }, |
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497 | { "THURSDAY", tDAY, 4 }, |
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498 | { "THUR", tDAY, 4 }, |
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499 | { "THURS", tDAY, 4 }, |
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500 | { "FRIDAY", tDAY, 5 }, |
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501 | { "SATURDAY", tDAY, 6 }, |
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502 | { 0, 0, 0 } |
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503 | }; |
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504 | |
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505 | static table const time_units_table[] = |
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506 | { |
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507 | { "YEAR", tYEAR_UNIT, 1 }, |
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508 | { "MONTH", tMONTH_UNIT, 1 }, |
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509 | { "FORTNIGHT",tDAY_UNIT, 14 }, |
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510 | { "WEEK", tDAY_UNIT, 7 }, |
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511 | { "DAY", tDAY_UNIT, 1 }, |
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512 | { "HOUR", tHOUR_UNIT, 1 }, |
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513 | { "MINUTE", tMINUTE_UNIT, 1 }, |
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514 | { "MIN", tMINUTE_UNIT, 1 }, |
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515 | { "SECOND", tSEC_UNIT, 1 }, |
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516 | { "SEC", tSEC_UNIT, 1 }, |
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517 | { 0, 0, 0 } |
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518 | }; |
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519 | |
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520 | /* Assorted relative-time words. */ |
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521 | static table const relative_time_table[] = |
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522 | { |
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523 | { "TOMORROW", tMINUTE_UNIT, 24 * 60 }, |
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524 | { "YESTERDAY",tMINUTE_UNIT, - (24 * 60) }, |
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525 | { "TODAY", tMINUTE_UNIT, 0 }, |
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526 | { "NOW", tMINUTE_UNIT, 0 }, |
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527 | { "LAST", tUNUMBER, -1 }, |
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528 | { "THIS", tUNUMBER, 0 }, |
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529 | { "NEXT", tUNUMBER, 1 }, |
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530 | { "FIRST", tUNUMBER, 1 }, |
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531 | /*{ "SECOND", tUNUMBER, 2 }, */ |
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532 | { "THIRD", tUNUMBER, 3 }, |
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533 | { "FOURTH", tUNUMBER, 4 }, |
---|
534 | { "FIFTH", tUNUMBER, 5 }, |
---|
535 | { "SIXTH", tUNUMBER, 6 }, |
---|
536 | { "SEVENTH", tUNUMBER, 7 }, |
---|
537 | { "EIGHTH", tUNUMBER, 8 }, |
---|
538 | { "NINTH", tUNUMBER, 9 }, |
---|
539 | { "TENTH", tUNUMBER, 10 }, |
---|
540 | { "ELEVENTH", tUNUMBER, 11 }, |
---|
541 | { "TWELFTH", tUNUMBER, 12 }, |
---|
542 | { "AGO", tAGO, 1 }, |
---|
543 | { 0, 0, 0 } |
---|
544 | }; |
---|
545 | |
---|
546 | /* The time zone table. This table is necessarily incomplete, as time |
---|
547 | zone abbreviations are ambiguous; e.g. Australians interpret "EST" |
---|
548 | as Eastern time in Australia, not as US Eastern Standard Time. |
---|
549 | You cannot rely on getdate to handle arbitrary time zone |
---|
550 | abbreviations; use numeric abbreviations like `-0500' instead. */ |
---|
551 | static table const time_zone_table[] = |
---|
552 | { |
---|
553 | { "GMT", tZONE, HOUR ( 0) }, /* Greenwich Mean */ |
---|
554 | { "UT", tZONE, HOUR ( 0) }, /* Universal (Coordinated) */ |
---|
555 | { "UTC", tZONE, HOUR ( 0) }, |
---|
556 | { "WET", tZONE, HOUR ( 0) }, /* Western European */ |
---|
557 | { "WEST", tDAYZONE, HOUR ( 0) }, /* Western European Summer */ |
---|
558 | { "BST", tDAYZONE, HOUR ( 0) }, /* British Summer */ |
---|
559 | { "ART", tZONE, -HOUR ( 3) }, /* Argentina */ |
---|
560 | { "BRT", tZONE, -HOUR ( 3) }, /* Brazil */ |
---|
561 | { "BRST", tDAYZONE, -HOUR ( 3) }, /* Brazil Summer */ |
---|
562 | { "NST", tZONE, -(HOUR ( 3) + 30) }, /* Newfoundland Standard */ |
---|
563 | { "NDT", tDAYZONE,-(HOUR ( 3) + 30) }, /* Newfoundland Daylight */ |
---|
564 | { "AST", tZONE, -HOUR ( 4) }, /* Atlantic Standard */ |
---|
565 | { "ADT", tDAYZONE, -HOUR ( 4) }, /* Atlantic Daylight */ |
---|
566 | { "CLT", tZONE, -HOUR ( 4) }, /* Chile */ |
---|
567 | { "CLST", tDAYZONE, -HOUR ( 4) }, /* Chile Summer */ |
---|
568 | { "EST", tZONE, -HOUR ( 5) }, /* Eastern Standard */ |
---|
569 | { "EDT", tDAYZONE, -HOUR ( 5) }, /* Eastern Daylight */ |
---|
570 | { "CST", tZONE, -HOUR ( 6) }, /* Central Standard */ |
---|
571 | { "CDT", tDAYZONE, -HOUR ( 6) }, /* Central Daylight */ |
---|
572 | { "MST", tZONE, -HOUR ( 7) }, /* Mountain Standard */ |
---|
573 | { "MDT", tDAYZONE, -HOUR ( 7) }, /* Mountain Daylight */ |
---|
574 | { "PST", tZONE, -HOUR ( 8) }, /* Pacific Standard */ |
---|
575 | { "PDT", tDAYZONE, -HOUR ( 8) }, /* Pacific Daylight */ |
---|
576 | { "AKST", tZONE, -HOUR ( 9) }, /* Alaska Standard */ |
---|
577 | { "AKDT", tDAYZONE, -HOUR ( 9) }, /* Alaska Daylight */ |
---|
578 | { "HST", tZONE, -HOUR (10) }, /* Hawaii Standard */ |
---|
579 | { "HAST", tZONE, -HOUR (10) }, /* Hawaii-Aleutian Standard */ |
---|
580 | { "HADT", tDAYZONE, -HOUR (10) }, /* Hawaii-Aleutian Daylight */ |
---|
581 | { "SST", tZONE, -HOUR (12) }, /* Samoa Standard */ |
---|
582 | { "WAT", tZONE, HOUR ( 1) }, /* West Africa */ |
---|
583 | { "CET", tZONE, HOUR ( 1) }, /* Central European */ |
---|
584 | { "CEST", tDAYZONE, HOUR ( 1) }, /* Central European Summer */ |
---|
585 | { "MET", tZONE, HOUR ( 1) }, /* Middle European */ |
---|
586 | { "MEZ", tZONE, HOUR ( 1) }, /* Middle European */ |
---|
587 | { "MEST", tDAYZONE, HOUR ( 1) }, /* Middle European Summer */ |
---|
588 | { "MESZ", tDAYZONE, HOUR ( 1) }, /* Middle European Summer */ |
---|
589 | { "EET", tZONE, HOUR ( 2) }, /* Eastern European */ |
---|
590 | { "EEST", tDAYZONE, HOUR ( 2) }, /* Eastern European Summer */ |
---|
591 | { "CAT", tZONE, HOUR ( 2) }, /* Central Africa */ |
---|
592 | { "SAST", tZONE, HOUR ( 2) }, /* South Africa Standard */ |
---|
593 | { "EAT", tZONE, HOUR ( 3) }, /* East Africa */ |
---|
594 | { "MSK", tZONE, HOUR ( 3) }, /* Moscow */ |
---|
595 | { "MSD", tDAYZONE, HOUR ( 3) }, /* Moscow Daylight */ |
---|
596 | { "IST", tZONE, (HOUR ( 5) + 30) }, /* India Standard */ |
---|
597 | { "SGT", tZONE, HOUR ( 8) }, /* Singapore */ |
---|
598 | { "KST", tZONE, HOUR ( 9) }, /* Korea Standard */ |
---|
599 | { "JST", tZONE, HOUR ( 9) }, /* Japan Standard */ |
---|
600 | { "GST", tZONE, HOUR (10) }, /* Guam Standard */ |
---|
601 | { "NZST", tZONE, HOUR (12) }, /* New Zealand Standard */ |
---|
602 | { "NZDT", tDAYZONE, HOUR (12) }, /* New Zealand Daylight */ |
---|
603 | { 0, 0, 0 } |
---|
604 | }; |
---|
605 | |
---|
606 | /* Military time zone table. */ |
---|
607 | static table const military_table[] = |
---|
608 | { |
---|
609 | { "A", tZONE, -HOUR ( 1) }, |
---|
610 | { "B", tZONE, -HOUR ( 2) }, |
---|
611 | { "C", tZONE, -HOUR ( 3) }, |
---|
612 | { "D", tZONE, -HOUR ( 4) }, |
---|
613 | { "E", tZONE, -HOUR ( 5) }, |
---|
614 | { "F", tZONE, -HOUR ( 6) }, |
---|
615 | { "G", tZONE, -HOUR ( 7) }, |
---|
616 | { "H", tZONE, -HOUR ( 8) }, |
---|
617 | { "I", tZONE, -HOUR ( 9) }, |
---|
618 | { "K", tZONE, -HOUR (10) }, |
---|
619 | { "L", tZONE, -HOUR (11) }, |
---|
620 | { "M", tZONE, -HOUR (12) }, |
---|
621 | { "N", tZONE, HOUR ( 1) }, |
---|
622 | { "O", tZONE, HOUR ( 2) }, |
---|
623 | { "P", tZONE, HOUR ( 3) }, |
---|
624 | { "Q", tZONE, HOUR ( 4) }, |
---|
625 | { "R", tZONE, HOUR ( 5) }, |
---|
626 | { "S", tZONE, HOUR ( 6) }, |
---|
627 | { "T", tZONE, HOUR ( 7) }, |
---|
628 | { "U", tZONE, HOUR ( 8) }, |
---|
629 | { "V", tZONE, HOUR ( 9) }, |
---|
630 | { "W", tZONE, HOUR (10) }, |
---|
631 | { "X", tZONE, HOUR (11) }, |
---|
632 | { "Y", tZONE, HOUR (12) }, |
---|
633 | { "Z", tZONE, HOUR ( 0) }, |
---|
634 | { 0, 0, 0 } |
---|
635 | }; |
---|
636 | |
---|
637 | |
---|
638 | |
---|
639 | static int |
---|
640 | to_hour (int hours, int meridian) |
---|
641 | { |
---|
642 | switch (meridian) |
---|
643 | { |
---|
644 | case MER24: |
---|
645 | return 0 <= hours && hours < 24 ? hours : -1; |
---|
646 | case MERam: |
---|
647 | return 0 < hours && hours < 12 ? hours : hours == 12 ? 0 : -1; |
---|
648 | case MERpm: |
---|
649 | return 0 < hours && hours < 12 ? hours + 12 : hours == 12 ? 12 : -1; |
---|
650 | default: |
---|
651 | abort (); |
---|
652 | } |
---|
653 | /* NOTREACHED */ |
---|
654 | } |
---|
655 | |
---|
656 | static int |
---|
657 | to_year (textint textyear) |
---|
658 | { |
---|
659 | int year = textyear.value; |
---|
660 | |
---|
661 | if (year < 0) |
---|
662 | year = -year; |
---|
663 | |
---|
664 | /* XPG4 suggests that years 00-68 map to 2000-2068, and |
---|
665 | years 69-99 map to 1969-1999. */ |
---|
666 | if (textyear.digits == 2) |
---|
667 | year += year < 69 ? 2000 : 1900; |
---|
668 | |
---|
669 | return year; |
---|
670 | } |
---|
671 | |
---|
672 | static table const * |
---|
673 | lookup_zone (parser_control const *pc, char const *name) |
---|
674 | { |
---|
675 | table const *tp; |
---|
676 | |
---|
677 | /* Try local zone abbreviations first; they're more likely to be right. */ |
---|
678 | for (tp = pc->local_time_zone_table; tp->name; tp++) |
---|
679 | if (strcmp (name, tp->name) == 0) |
---|
680 | return tp; |
---|
681 | |
---|
682 | for (tp = time_zone_table; tp->name; tp++) |
---|
683 | if (strcmp (name, tp->name) == 0) |
---|
684 | return tp; |
---|
685 | |
---|
686 | return 0; |
---|
687 | } |
---|
688 | |
---|
689 | #if ! HAVE_TM_GMTOFF |
---|
690 | /* Yield the difference between *A and *B, |
---|
691 | measured in seconds, ignoring leap seconds. |
---|
692 | The body of this function is taken directly from the GNU C Library; |
---|
693 | see src/strftime.c. */ |
---|
694 | static int |
---|
695 | tm_diff (struct tm const *a, struct tm const *b) |
---|
696 | { |
---|
697 | /* Compute intervening leap days correctly even if year is negative. |
---|
698 | Take care to avoid int overflow in leap day calculations, |
---|
699 | but it's OK to assume that A and B are close to each other. */ |
---|
700 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); |
---|
701 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); |
---|
702 | int a100 = a4 / 25 - (a4 % 25 < 0); |
---|
703 | int b100 = b4 / 25 - (b4 % 25 < 0); |
---|
704 | int a400 = a100 >> 2; |
---|
705 | int b400 = b100 >> 2; |
---|
706 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); |
---|
707 | int years = a->tm_year - b->tm_year; |
---|
708 | int days = (365 * years + intervening_leap_days |
---|
709 | + (a->tm_yday - b->tm_yday)); |
---|
710 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) |
---|
711 | + (a->tm_min - b->tm_min)) |
---|
712 | + (a->tm_sec - b->tm_sec)); |
---|
713 | } |
---|
714 | #endif /* ! HAVE_TM_GMTOFF */ |
---|
715 | |
---|
716 | static table const * |
---|
717 | lookup_word (parser_control const *pc, char *word) |
---|
718 | { |
---|
719 | char *p; |
---|
720 | char *q; |
---|
721 | size_t wordlen; |
---|
722 | table const *tp; |
---|
723 | int i; |
---|
724 | int abbrev; |
---|
725 | |
---|
726 | /* Make it uppercase. */ |
---|
727 | for (p = word; *p; p++) |
---|
728 | if (ISLOWER ((unsigned char) *p)) |
---|
729 | *p = toupper ((unsigned char) *p); |
---|
730 | |
---|
731 | for (tp = meridian_table; tp->name; tp++) |
---|
732 | if (strcmp (word, tp->name) == 0) |
---|
733 | return tp; |
---|
734 | |
---|
735 | /* See if we have an abbreviation for a month. */ |
---|
736 | wordlen = strlen (word); |
---|
737 | abbrev = wordlen == 3 || (wordlen == 4 && word[3] == '.'); |
---|
738 | |
---|
739 | for (tp = month_and_day_table; tp->name; tp++) |
---|
740 | if ((abbrev ? strncmp (word, tp->name, 3) : strcmp (word, tp->name)) == 0) |
---|
741 | return tp; |
---|
742 | |
---|
743 | if ((tp = lookup_zone (pc, word))) |
---|
744 | return tp; |
---|
745 | |
---|
746 | if (strcmp (word, dst_table[0].name) == 0) |
---|
747 | return dst_table; |
---|
748 | |
---|
749 | for (tp = time_units_table; tp->name; tp++) |
---|
750 | if (strcmp (word, tp->name) == 0) |
---|
751 | return tp; |
---|
752 | |
---|
753 | /* Strip off any plural and try the units table again. */ |
---|
754 | if (word[wordlen - 1] == 'S') |
---|
755 | { |
---|
756 | word[wordlen - 1] = '\0'; |
---|
757 | for (tp = time_units_table; tp->name; tp++) |
---|
758 | if (strcmp (word, tp->name) == 0) |
---|
759 | return tp; |
---|
760 | word[wordlen - 1] = 'S'; /* For "this" in relative_time_table. */ |
---|
761 | } |
---|
762 | |
---|
763 | for (tp = relative_time_table; tp->name; tp++) |
---|
764 | if (strcmp (word, tp->name) == 0) |
---|
765 | return tp; |
---|
766 | |
---|
767 | /* Military time zones. */ |
---|
768 | if (wordlen == 1) |
---|
769 | for (tp = military_table; tp->name; tp++) |
---|
770 | if (word[0] == tp->name[0]) |
---|
771 | return tp; |
---|
772 | |
---|
773 | /* Drop out any periods and try the time zone table again. */ |
---|
774 | for (i = 0, p = q = word; (*p = *q); q++) |
---|
775 | if (*q == '.') |
---|
776 | i = 1; |
---|
777 | else |
---|
778 | p++; |
---|
779 | if (i && (tp = lookup_zone (pc, word))) |
---|
780 | return tp; |
---|
781 | |
---|
782 | return 0; |
---|
783 | } |
---|
784 | |
---|
785 | static int |
---|
786 | yylex (YYSTYPE *lvalp, parser_control *pc) |
---|
787 | { |
---|
788 | unsigned char c; |
---|
789 | int count; |
---|
790 | |
---|
791 | for (;;) |
---|
792 | { |
---|
793 | while (c = *pc->input, ISSPACE (c)) |
---|
794 | pc->input++; |
---|
795 | |
---|
796 | if (ISDIGIT (c) || c == '-' || c == '+') |
---|
797 | { |
---|
798 | char const *p; |
---|
799 | int sign; |
---|
800 | int value; |
---|
801 | if (c == '-' || c == '+') |
---|
802 | { |
---|
803 | sign = c == '-' ? -1 : 1; |
---|
804 | c = *++pc->input; |
---|
805 | if (! ISDIGIT (c)) |
---|
806 | /* skip the '-' sign */ |
---|
807 | continue; |
---|
808 | } |
---|
809 | else |
---|
810 | sign = 0; |
---|
811 | p = pc->input; |
---|
812 | value = 0; |
---|
813 | do |
---|
814 | { |
---|
815 | value = 10 * value + c - '0'; |
---|
816 | c = *++p; |
---|
817 | } |
---|
818 | while (ISDIGIT (c)); |
---|
819 | lvalp->textintval.value = sign < 0 ? -value : value; |
---|
820 | lvalp->textintval.digits = p - pc->input; |
---|
821 | pc->input = p; |
---|
822 | return sign ? tSNUMBER : tUNUMBER; |
---|
823 | } |
---|
824 | |
---|
825 | if (ISALPHA (c)) |
---|
826 | { |
---|
827 | char buff[20]; |
---|
828 | char *p = buff; |
---|
829 | table const *tp; |
---|
830 | |
---|
831 | do |
---|
832 | { |
---|
833 | if (p < buff + sizeof buff - 1) |
---|
834 | *p++ = c; |
---|
835 | c = *++pc->input; |
---|
836 | } |
---|
837 | while (ISALPHA (c) || c == '.'); |
---|
838 | |
---|
839 | *p = '\0'; |
---|
840 | tp = lookup_word (pc, buff); |
---|
841 | if (! tp) |
---|
842 | return '?'; |
---|
843 | lvalp->intval = tp->value; |
---|
844 | return tp->type; |
---|
845 | } |
---|
846 | |
---|
847 | if (c != '(') |
---|
848 | return *pc->input++; |
---|
849 | count = 0; |
---|
850 | do |
---|
851 | { |
---|
852 | c = *pc->input++; |
---|
853 | if (c == '\0') |
---|
854 | return c; |
---|
855 | if (c == '(') |
---|
856 | count++; |
---|
857 | else if (c == ')') |
---|
858 | count--; |
---|
859 | } |
---|
860 | while (count > 0); |
---|
861 | } |
---|
862 | } |
---|
863 | |
---|
864 | /* Do nothing if the parser reports an error. */ |
---|
865 | static int |
---|
866 | yyerror (char *s ATTRIBUTE_UNUSED) |
---|
867 | { |
---|
868 | return 0; |
---|
869 | } |
---|
870 | |
---|
871 | /* Parse a date/time string P. Return the corresponding time_t value, |
---|
872 | or (time_t) -1 if there is an error. P can be an incomplete or |
---|
873 | relative time specification; if so, use *NOW as the basis for the |
---|
874 | returned time. */ |
---|
875 | time_t |
---|
876 | get_date (const char *p, const time_t *now) |
---|
877 | { |
---|
878 | time_t Start = now ? *now : time (0); |
---|
879 | struct tm *tmp = localtime (&Start); |
---|
880 | struct tm tm; |
---|
881 | struct tm tm0; |
---|
882 | parser_control pc; |
---|
883 | |
---|
884 | if (! tmp) |
---|
885 | return -1; |
---|
886 | |
---|
887 | pc.input = p; |
---|
888 | pc.year.value = tmp->tm_year + TM_YEAR_BASE; |
---|
889 | pc.year.digits = 4; |
---|
890 | pc.month = tmp->tm_mon + 1; |
---|
891 | pc.day = tmp->tm_mday; |
---|
892 | pc.hour = tmp->tm_hour; |
---|
893 | pc.minutes = tmp->tm_min; |
---|
894 | pc.seconds = tmp->tm_sec; |
---|
895 | tm.tm_isdst = tmp->tm_isdst; |
---|
896 | |
---|
897 | pc.meridian = MER24; |
---|
898 | pc.rel_seconds = 0; |
---|
899 | pc.rel_minutes = 0; |
---|
900 | pc.rel_hour = 0; |
---|
901 | pc.rel_day = 0; |
---|
902 | pc.rel_month = 0; |
---|
903 | pc.rel_year = 0; |
---|
904 | pc.dates_seen = 0; |
---|
905 | pc.days_seen = 0; |
---|
906 | pc.rels_seen = 0; |
---|
907 | pc.times_seen = 0; |
---|
908 | pc.local_zones_seen = 0; |
---|
909 | pc.zones_seen = 0; |
---|
910 | |
---|
911 | #if HAVE_TM_ZONE |
---|
912 | pc.local_time_zone_table[0].name = tmp->tm_zone; |
---|
913 | pc.local_time_zone_table[0].type = tLOCAL_ZONE; |
---|
914 | pc.local_time_zone_table[0].value = tmp->tm_isdst; |
---|
915 | pc.local_time_zone_table[1].name = 0; |
---|
916 | |
---|
917 | /* Probe the names used in the next three calendar quarters, looking |
---|
918 | for a tm_isdst different from the one we already have. */ |
---|
919 | { |
---|
920 | int quarter; |
---|
921 | for (quarter = 1; quarter <= 3; quarter++) |
---|
922 | { |
---|
923 | time_t probe = Start + quarter * (90 * 24 * 60 * 60); |
---|
924 | struct tm *probe_tm = localtime (&probe); |
---|
925 | if (probe_tm && probe_tm->tm_zone |
---|
926 | && probe_tm->tm_isdst != pc.local_time_zone_table[0].value) |
---|
927 | { |
---|
928 | { |
---|
929 | pc.local_time_zone_table[1].name = probe_tm->tm_zone; |
---|
930 | pc.local_time_zone_table[1].type = tLOCAL_ZONE; |
---|
931 | pc.local_time_zone_table[1].value = probe_tm->tm_isdst; |
---|
932 | pc.local_time_zone_table[2].name = 0; |
---|
933 | } |
---|
934 | break; |
---|
935 | } |
---|
936 | } |
---|
937 | } |
---|
938 | #else |
---|
939 | #if HAVE_TZNAME |
---|
940 | { |
---|
941 | # ifndef tzname |
---|
942 | extern char *tzname[]; |
---|
943 | # endif |
---|
944 | int i; |
---|
945 | for (i = 0; i < 2; i++) |
---|
946 | { |
---|
947 | pc.local_time_zone_table[i].name = tzname[i]; |
---|
948 | pc.local_time_zone_table[i].type = tLOCAL_ZONE; |
---|
949 | pc.local_time_zone_table[i].value = i; |
---|
950 | } |
---|
951 | pc.local_time_zone_table[i].name = 0; |
---|
952 | } |
---|
953 | #else |
---|
954 | pc.local_time_zone_table[0].name = 0; |
---|
955 | #endif |
---|
956 | #endif |
---|
957 | |
---|
958 | if (pc.local_time_zone_table[0].name && pc.local_time_zone_table[1].name |
---|
959 | && ! strcmp (pc.local_time_zone_table[0].name, |
---|
960 | pc.local_time_zone_table[1].name)) |
---|
961 | { |
---|
962 | /* This locale uses the same abbrevation for standard and |
---|
963 | daylight times. So if we see that abbreviation, we don't |
---|
964 | know whether it's daylight time. */ |
---|
965 | pc.local_time_zone_table[0].value = -1; |
---|
966 | pc.local_time_zone_table[1].name = 0; |
---|
967 | } |
---|
968 | |
---|
969 | if (yyparse (&pc) != 0 |
---|
970 | || 1 < pc.times_seen || 1 < pc.dates_seen || 1 < pc.days_seen |
---|
971 | || 1 < (pc.local_zones_seen + pc.zones_seen) |
---|
972 | || (pc.local_zones_seen && 1 < pc.local_isdst)) |
---|
973 | return -1; |
---|
974 | |
---|
975 | tm.tm_year = to_year (pc.year) - TM_YEAR_BASE + pc.rel_year; |
---|
976 | tm.tm_mon = pc.month - 1 + pc.rel_month; |
---|
977 | tm.tm_mday = pc.day + pc.rel_day; |
---|
978 | if (pc.times_seen || (pc.rels_seen && ! pc.dates_seen && ! pc.days_seen)) |
---|
979 | { |
---|
980 | tm.tm_hour = to_hour (pc.hour, pc.meridian); |
---|
981 | if (tm.tm_hour < 0) |
---|
982 | return -1; |
---|
983 | tm.tm_min = pc.minutes; |
---|
984 | tm.tm_sec = pc.seconds; |
---|
985 | } |
---|
986 | else |
---|
987 | { |
---|
988 | tm.tm_hour = tm.tm_min = tm.tm_sec = 0; |
---|
989 | } |
---|
990 | |
---|
991 | /* Let mktime deduce tm_isdst if we have an absolute time stamp, |
---|
992 | or if the relative time stamp mentions days, months, or years. */ |
---|
993 | if (pc.dates_seen | pc.days_seen | pc.times_seen | pc.rel_day | pc.rel_month | pc.rel_year) |
---|
994 | tm.tm_isdst = -1; |
---|
995 | |
---|
996 | /* But if the input explicitly specifies local time with or without |
---|
997 | DST, give mktime that information. */ |
---|
998 | if (pc.local_zones_seen) |
---|
999 | tm.tm_isdst = pc.local_isdst; |
---|
1000 | |
---|
1001 | tm0 = tm; |
---|
1002 | |
---|
1003 | Start = mktime (&tm); |
---|
1004 | |
---|
1005 | if (Start == (time_t) -1) |
---|
1006 | { |
---|
1007 | |
---|
1008 | /* Guard against falsely reporting errors near the time_t boundaries |
---|
1009 | when parsing times in other time zones. For example, if the min |
---|
1010 | time_t value is 1970-01-01 00:00:00 UTC and we are 8 hours ahead |
---|
1011 | of UTC, then the min localtime value is 1970-01-01 08:00:00; if |
---|
1012 | we apply mktime to 1970-01-01 00:00:00 we will get an error, so |
---|
1013 | we apply mktime to 1970-01-02 08:00:00 instead and adjust the time |
---|
1014 | zone by 24 hours to compensate. This algorithm assumes that |
---|
1015 | there is no DST transition within a day of the time_t boundaries. */ |
---|
1016 | if (pc.zones_seen) |
---|
1017 | { |
---|
1018 | tm = tm0; |
---|
1019 | if (tm.tm_year <= EPOCH_YEAR - TM_YEAR_BASE) |
---|
1020 | { |
---|
1021 | tm.tm_mday++; |
---|
1022 | pc.time_zone += 24 * 60; |
---|
1023 | } |
---|
1024 | else |
---|
1025 | { |
---|
1026 | tm.tm_mday--; |
---|
1027 | pc.time_zone -= 24 * 60; |
---|
1028 | } |
---|
1029 | Start = mktime (&tm); |
---|
1030 | } |
---|
1031 | |
---|
1032 | if (Start == (time_t) -1) |
---|
1033 | return Start; |
---|
1034 | } |
---|
1035 | |
---|
1036 | if (pc.days_seen && ! pc.dates_seen) |
---|
1037 | { |
---|
1038 | tm.tm_mday += ((pc.day_number - tm.tm_wday + 7) % 7 |
---|
1039 | + 7 * (pc.day_ordinal - (0 < pc.day_ordinal))); |
---|
1040 | Start = mktime (&tm); |
---|
1041 | if (Start == (time_t) -1) |
---|
1042 | return Start; |
---|
1043 | } |
---|
1044 | |
---|
1045 | if (pc.zones_seen) |
---|
1046 | { |
---|
1047 | int delta = pc.time_zone * 60; |
---|
1048 | #ifdef HAVE_TM_GMTOFF |
---|
1049 | delta -= tm.tm_gmtoff; |
---|
1050 | #else |
---|
1051 | struct tm *gmt = gmtime (&Start); |
---|
1052 | if (! gmt) |
---|
1053 | return -1; |
---|
1054 | delta -= tm_diff (&tm, gmt); |
---|
1055 | #endif |
---|
1056 | if ((Start < Start - delta) != (delta < 0)) |
---|
1057 | return -1; /* time_t overflow */ |
---|
1058 | Start -= delta; |
---|
1059 | } |
---|
1060 | |
---|
1061 | /* Add relative hours, minutes, and seconds. Ignore leap seconds; |
---|
1062 | i.e. "+ 10 minutes" means 600 seconds, even if one of them is a |
---|
1063 | leap second. Typically this is not what the user wants, but it's |
---|
1064 | too hard to do it the other way, because the time zone indicator |
---|
1065 | must be applied before relative times, and if mktime is applied |
---|
1066 | again the time zone will be lost. */ |
---|
1067 | { |
---|
1068 | time_t t0 = Start; |
---|
1069 | long d1 = 60 * 60 * (long) pc.rel_hour; |
---|
1070 | time_t t1 = t0 + d1; |
---|
1071 | long d2 = 60 * (long) pc.rel_minutes; |
---|
1072 | time_t t2 = t1 + d2; |
---|
1073 | int d3 = pc.rel_seconds; |
---|
1074 | time_t t3 = t2 + d3; |
---|
1075 | if ((d1 / (60 * 60) ^ pc.rel_hour) |
---|
1076 | | (d2 / 60 ^ pc.rel_minutes) |
---|
1077 | | ((t0 + d1 < t0) ^ (d1 < 0)) |
---|
1078 | | ((t1 + d2 < t1) ^ (d2 < 0)) |
---|
1079 | | ((t2 + d3 < t2) ^ (d3 < 0))) |
---|
1080 | return -1; |
---|
1081 | Start = t3; |
---|
1082 | } |
---|
1083 | |
---|
1084 | return Start; |
---|
1085 | } |
---|
1086 | |
---|
1087 | #if TEST |
---|
1088 | |
---|
1089 | #include <stdio.h> |
---|
1090 | |
---|
1091 | int |
---|
1092 | main (int ac, char **av) |
---|
1093 | { |
---|
1094 | char buff[BUFSIZ]; |
---|
1095 | time_t d; |
---|
1096 | |
---|
1097 | printf ("Enter date, or blank line to exit.\n\t> "); |
---|
1098 | fflush (stdout); |
---|
1099 | |
---|
1100 | buff[BUFSIZ - 1] = 0; |
---|
1101 | while (fgets (buff, BUFSIZ - 1, stdin) && buff[0]) |
---|
1102 | { |
---|
1103 | d = get_date (buff, 0); |
---|
1104 | if (d == (time_t) -1) |
---|
1105 | printf ("Bad format - couldn't convert.\n"); |
---|
1106 | else |
---|
1107 | printf ("%s", ctime (&d)); |
---|
1108 | printf ("\t> "); |
---|
1109 | fflush (stdout); |
---|
1110 | } |
---|
1111 | return 0; |
---|
1112 | } |
---|
1113 | #endif /* defined TEST */ |
---|