| 1 | |
| 2 | ############################################################################### |
| 3 | ## ## |
| 4 | ## Copyright (c) 1995 - 2002 by Steffen Beyer. ## |
| 5 | ## All rights reserved. ## |
| 6 | ## ## |
| 7 | ## This package is free software; you can redistribute it ## |
| 8 | ## and/or modify it under the same terms as Perl itself. ## |
| 9 | ## ## |
| 10 | ############################################################################### |
| 11 | |
| 12 | package Date::Calc; |
| 13 | |
| 14 | use strict; |
| 15 | use vars qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $VERSION); |
| 16 | |
| 17 | require Exporter; |
| 18 | require DynaLoader; |
| 19 | |
| 20 | @ISA = qw(Exporter DynaLoader); |
| 21 | |
| 22 | @EXPORT = qw(); |
| 23 | |
| 24 | @EXPORT_OK = qw( |
| 25 | Days_in_Year |
| 26 | Days_in_Month |
| 27 | Weeks_in_Year |
| 28 | leap_year |
| 29 | check_date |
| 30 | check_time |
| 31 | check_business_date |
| 32 | Day_of_Year |
| 33 | Date_to_Days |
| 34 | Day_of_Week |
| 35 | Week_Number |
| 36 | Week_of_Year |
| 37 | Monday_of_Week |
| 38 | Nth_Weekday_of_Month_Year |
| 39 | Standard_to_Business |
| 40 | Business_to_Standard |
| 41 | Delta_Days |
| 42 | Delta_DHMS |
| 43 | Delta_YMD |
| 44 | Delta_YMDHMS |
| 45 | Normalize_DHMS |
| 46 | Add_Delta_Days |
| 47 | Add_Delta_DHMS |
| 48 | Add_Delta_YM |
| 49 | Add_Delta_YMD |
| 50 | Add_Delta_YMDHMS |
| 51 | System_Clock |
| 52 | Today |
| 53 | Now |
| 54 | Today_and_Now |
| 55 | This_Year |
| 56 | Gmtime |
| 57 | Localtime |
| 58 | Mktime |
| 59 | Timezone |
| 60 | Date_to_Time |
| 61 | Time_to_Date |
| 62 | Easter_Sunday |
| 63 | Decode_Month |
| 64 | Decode_Day_of_Week |
| 65 | Decode_Language |
| 66 | Decode_Date_EU |
| 67 | Decode_Date_US |
| 68 | Fixed_Window |
| 69 | Moving_Window |
| 70 | Compress |
| 71 | Uncompress |
| 72 | check_compressed |
| 73 | Compressed_to_Text |
| 74 | Date_to_Text |
| 75 | Date_to_Text_Long |
| 76 | English_Ordinal |
| 77 | Calendar |
| 78 | Month_to_Text |
| 79 | Day_of_Week_to_Text |
| 80 | Day_of_Week_Abbreviation |
| 81 | Language_to_Text |
| 82 | Language |
| 83 | Languages |
| 84 | Decode_Date_EU2 |
| 85 | Decode_Date_US2 |
| 86 | Parse_Date |
| 87 | ISO_LC |
| 88 | ISO_UC |
| 89 | ); |
| 90 | |
| 91 | %EXPORT_TAGS = (all => [@EXPORT_OK]); |
| 92 | |
| 93 | ################################################## |
| 94 | ## ## |
| 95 | ## "Version()" is available but not exported ## |
| 96 | ## in order to avoid possible name clashes. ## |
| 97 | ## Call with "Date::Calc::Version()" instead! ## |
| 98 | ## ## |
| 99 | ################################################## |
| 100 | |
| 101 | $VERSION = '5.3'; |
| 102 | |
| 103 | bootstrap Date::Calc $VERSION; |
| 104 | |
| 105 | sub Decode_Date_EU2 |
| 106 | { |
| 107 | die "Usage: (\$year,\$month,\$day) = Decode_Date_EU2(\$date);\n" |
| 108 | if (@_ != 1); |
| 109 | |
| 110 | my($buffer) = @_; |
| 111 | my($year,$month,$day,$length); |
| 112 | |
| 113 | if ($buffer =~ /^\D* (\d+) [^A-Za-z0-9\xC0-\xD6\xD8-\xF6\xF8-\xFF]* ([A-Za-z\xC0-\xD6\xD8-\xF6\xF8-\xFF]+) [^A-Za-z0-9\xC0-\xD6\xD8-\xF6\xF8-\xFF]* (\d+) \D*$/x) |
| 114 | { |
| 115 | ($day,$month,$year) = ($1,$2,$3); |
| 116 | $month = Decode_Month($month); |
| 117 | unless ($month > 0) |
| 118 | { |
| 119 | return(); # can't decode month! |
| 120 | } |
| 121 | } |
| 122 | elsif ($buffer =~ /^\D* 0*(\d+) \D*$/x) |
| 123 | { |
| 124 | $buffer = $1; |
| 125 | $length = length($buffer); |
| 126 | if ($length == 3) |
| 127 | { |
| 128 | $day = substr($buffer,0,1); |
| 129 | $month = substr($buffer,1,1); |
| 130 | $year = substr($buffer,2,1); |
| 131 | } |
| 132 | elsif ($length == 4) |
| 133 | { |
| 134 | $day = substr($buffer,0,1); |
| 135 | $month = substr($buffer,1,1); |
| 136 | $year = substr($buffer,2,2); |
| 137 | } |
| 138 | elsif ($length == 5) |
| 139 | { |
| 140 | $day = substr($buffer,0,1); |
| 141 | $month = substr($buffer,1,2); |
| 142 | $year = substr($buffer,3,2); |
| 143 | } |
| 144 | elsif ($length == 6) |
| 145 | { |
| 146 | $day = substr($buffer,0,2); |
| 147 | $month = substr($buffer,2,2); |
| 148 | $year = substr($buffer,4,2); |
| 149 | } |
| 150 | elsif ($length == 7) |
| 151 | { |
| 152 | $day = substr($buffer,0,1); |
| 153 | $month = substr($buffer,1,2); |
| 154 | $year = substr($buffer,3,4); |
| 155 | } |
| 156 | elsif ($length == 8) |
| 157 | { |
| 158 | $day = substr($buffer,0,2); |
| 159 | $month = substr($buffer,2,2); |
| 160 | $year = substr($buffer,4,4); |
| 161 | } |
| 162 | else { return(); } # wrong number of digits! |
| 163 | } |
| 164 | elsif ($buffer =~ /^\D* (\d+) \D+ (\d+) \D+ (\d+) \D*$/x) |
| 165 | { |
| 166 | ($day,$month,$year) = ($1,$2,$3); |
| 167 | } |
| 168 | else { return(); } # no match at all! |
| 169 | $year = Moving_Window($year); |
| 170 | if (check_date($year,$month,$day)) |
| 171 | { |
| 172 | return($year,$month,$day); |
| 173 | } |
| 174 | else { return(); } # not a valid date! |
| 175 | } |
| 176 | |
| 177 | sub Decode_Date_US2 |
| 178 | { |
| 179 | die "Usage: (\$year,\$month,\$day) = Decode_Date_US2(\$date);\n" |
| 180 | if (@_ != 1); |
| 181 | |
| 182 | my($buffer) = @_; |
| 183 | my($year,$month,$day,$length); |
| 184 | |
| 185 | if ($buffer =~ /^[^A-Za-z0-9\xC0-\xD6\xD8-\xF6\xF8-\xFF]* ([A-Za-z\xC0-\xD6\xD8-\xF6\xF8-\xFF]+) [^A-Za-z0-9\xC0-\xD6\xD8-\xF6\xF8-\xFF]* 0*(\d+) \D*$/x) |
| 186 | { |
| 187 | ($month,$buffer) = ($1,$2); |
| 188 | $month = Decode_Month($month); |
| 189 | unless ($month > 0) |
| 190 | { |
| 191 | return(); # can't decode month! |
| 192 | } |
| 193 | $length = length($buffer); |
| 194 | if ($length == 2) |
| 195 | { |
| 196 | $day = substr($buffer,0,1); |
| 197 | $year = substr($buffer,1,1); |
| 198 | } |
| 199 | elsif ($length == 3) |
| 200 | { |
| 201 | $day = substr($buffer,0,1); |
| 202 | $year = substr($buffer,1,2); |
| 203 | } |
| 204 | elsif ($length == 4) |
| 205 | { |
| 206 | $day = substr($buffer,0,2); |
| 207 | $year = substr($buffer,2,2); |
| 208 | } |
| 209 | elsif ($length == 5) |
| 210 | { |
| 211 | $day = substr($buffer,0,1); |
| 212 | $year = substr($buffer,1,4); |
| 213 | } |
| 214 | elsif ($length == 6) |
| 215 | { |
| 216 | $day = substr($buffer,0,2); |
| 217 | $year = substr($buffer,2,4); |
| 218 | } |
| 219 | else { return(); } # wrong number of digits! |
| 220 | } |
| 221 | elsif ($buffer =~ /^[^A-Za-z0-9\xC0-\xD6\xD8-\xF6\xF8-\xFF]* ([A-Za-z\xC0-\xD6\xD8-\xF6\xF8-\xFF]+) [^A-Za-z0-9\xC0-\xD6\xD8-\xF6\xF8-\xFF]* (\d+) \D+ (\d+) \D*$/x) |
| 222 | { |
| 223 | ($month,$day,$year) = ($1,$2,$3); |
| 224 | $month = Decode_Month($month); |
| 225 | unless ($month > 0) |
| 226 | { |
| 227 | return(); # can't decode month! |
| 228 | } |
| 229 | } |
| 230 | elsif ($buffer =~ /^\D* 0*(\d+) \D*$/x) |
| 231 | { |
| 232 | $buffer = $1; |
| 233 | $length = length($buffer); |
| 234 | if ($length == 3) |
| 235 | { |
| 236 | $month = substr($buffer,0,1); |
| 237 | $day = substr($buffer,1,1); |
| 238 | $year = substr($buffer,2,1); |
| 239 | } |
| 240 | elsif ($length == 4) |
| 241 | { |
| 242 | $month = substr($buffer,0,1); |
| 243 | $day = substr($buffer,1,1); |
| 244 | $year = substr($buffer,2,2); |
| 245 | } |
| 246 | elsif ($length == 5) |
| 247 | { |
| 248 | $month = substr($buffer,0,1); |
| 249 | $day = substr($buffer,1,2); |
| 250 | $year = substr($buffer,3,2); |
| 251 | } |
| 252 | elsif ($length == 6) |
| 253 | { |
| 254 | $month = substr($buffer,0,2); |
| 255 | $day = substr($buffer,2,2); |
| 256 | $year = substr($buffer,4,2); |
| 257 | } |
| 258 | elsif ($length == 7) |
| 259 | { |
| 260 | $month = substr($buffer,0,1); |
| 261 | $day = substr($buffer,1,2); |
| 262 | $year = substr($buffer,3,4); |
| 263 | } |
| 264 | elsif ($length == 8) |
| 265 | { |
| 266 | $month = substr($buffer,0,2); |
| 267 | $day = substr($buffer,2,2); |
| 268 | $year = substr($buffer,4,4); |
| 269 | } |
| 270 | else { return(); } # wrong number of digits! |
| 271 | } |
| 272 | elsif ($buffer =~ /^\D* (\d+) \D+ (\d+) \D+ (\d+) \D*$/x) |
| 273 | { |
| 274 | ($month,$day,$year) = ($1,$2,$3); |
| 275 | } |
| 276 | else { return(); } # no match at all! |
| 277 | $year = Moving_Window($year); |
| 278 | if (check_date($year,$month,$day)) |
| 279 | { |
| 280 | return($year,$month,$day); |
| 281 | } |
| 282 | else { return(); } # not a valid date! |
| 283 | } |
| 284 | |
| 285 | sub Parse_Date |
| 286 | { |
| 287 | die "Usage: (\$year,\$month,\$day) = Parse_Date(\$date);\n" |
| 288 | if (@_ != 1); |
| 289 | |
| 290 | my($date) = @_; |
| 291 | my($year,$month,$day); |
| 292 | unless ($date =~ /\b([JFMASOND][aepuco][nbrynlgptvc])\s+([0123]??\d)\b/) |
| 293 | { |
| 294 | return(); |
| 295 | } |
| 296 | $month = $1; |
| 297 | $day = $2; |
| 298 | unless ($date =~ /\b(19\d\d|20\d\d)\b/) |
| 299 | { |
| 300 | return(); |
| 301 | } |
| 302 | $year = $1; |
| 303 | $month = Decode_Month($month); |
| 304 | unless ($month > 0) |
| 305 | { |
| 306 | return(); |
| 307 | } |
| 308 | unless (check_date($year,$month,$day)) |
| 309 | { |
| 310 | return(); |
| 311 | } |
| 312 | return($year,$month,$day); |
| 313 | } |
| 314 | |
| 315 | 1; |
| 316 | |
| 317 | __END__ |
| 318 | |