source: extensions/gsdl-video/trunk/installed/cmdline/lib/ruby/1.8/date/format.rb@ 18425

Last change on this file since 18425 was 18425, checked in by davidb, 15 years ago

Video extension to Greenstone
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1# format.rb: Written by Tadayoshi Funaba 1999-2007
2# $Id: format.rb,v 2.30 2007-01-07 09:16:24+09 tadf Exp $
3
4require 'rational'
5
6class Date
7
8 module Format # :nodoc:
9
10 MONTHS = {
11 'january' => 1, 'february' => 2, 'march' => 3, 'april' => 4,
12 'may' => 5, 'june' => 6, 'july' => 7, 'august' => 8,
13 'september'=> 9, 'october' =>10, 'november' =>11, 'december' =>12
14 }
15
16 DAYS = {
17 'sunday' => 0, 'monday' => 1, 'tuesday' => 2, 'wednesday'=> 3,
18 'thursday' => 4, 'friday' => 5, 'saturday' => 6
19 }
20
21 ABBR_MONTHS = {
22 'jan' => 1, 'feb' => 2, 'mar' => 3, 'apr' => 4,
23 'may' => 5, 'jun' => 6, 'jul' => 7, 'aug' => 8,
24 'sep' => 9, 'oct' =>10, 'nov' =>11, 'dec' =>12
25 }
26
27 ABBR_DAYS = {
28 'sun' => 0, 'mon' => 1, 'tue' => 2, 'wed' => 3,
29 'thu' => 4, 'fri' => 5, 'sat' => 6
30 }
31
32 ZONES = {
33 'ut' => 0*3600, 'gmt' => 0*3600, 'est' => -5*3600, 'edt' => -4*3600,
34 'cst' => -6*3600, 'cdt' => -5*3600, 'mst' => -7*3600, 'mdt' => -6*3600,
35 'pst' => -8*3600, 'pdt' => -7*3600,
36 'a' => 1*3600, 'b' => 2*3600, 'c' => 3*3600, 'd' => 4*3600,
37 'e' => 5*3600, 'f' => 6*3600, 'g' => 7*3600, 'h' => 8*3600,
38 'i' => 9*3600, 'k' => 10*3600, 'l' => 11*3600, 'm' => 12*3600,
39 'n' => -1*3600, 'o' => -2*3600, 'p' => -3*3600, 'q' => -4*3600,
40 'r' => -5*3600, 's' => -6*3600, 't' => -7*3600, 'u' => -8*3600,
41 'v' => -9*3600, 'w' =>-10*3600, 'x' =>-11*3600, 'y' =>-12*3600,
42 'z' => 0*3600,
43 'utc' => 0*3600, 'wet' => 0*3600, 'bst' => 1*3600, 'wat' => -1*3600,
44 'at' => -2*3600, 'ast' => -4*3600, 'adt' => -3*3600, 'yst' => -9*3600,
45 'ydt' => -8*3600, 'hst' =>-10*3600, 'hdt' => -9*3600, 'cat' =>-10*3600,
46 'ahst'=>-10*3600, 'nt' =>-11*3600, 'idlw'=>-12*3600, 'cet' => 1*3600,
47 'met' => 1*3600, 'mewt'=> 1*3600, 'mest'=> 2*3600, 'mesz'=> 2*3600,
48 'swt' => 1*3600, 'sst' => 2*3600, 'fwt' => 1*3600, 'fst' => 2*3600,
49 'eet' => 2*3600, 'bt' => 3*3600, 'zp4' => 4*3600, 'zp5' => 5*3600,
50 'zp6' => 6*3600, 'wast'=> 7*3600, 'wadt'=> 8*3600, 'cct' => 8*3600,
51 'jst' => 9*3600, 'east'=> 10*3600, 'eadt'=> 11*3600, 'gst' => 10*3600,
52 'nzt' => 12*3600, 'nzst'=> 12*3600, 'nzdt'=> 13*3600, 'idle'=> 12*3600,
53
54 'afghanistan' => 16200, 'alaskan' => -32400,
55 'arab' => 10800, 'arabian' => 14400,
56 'arabic' => 10800, 'atlantic' => -14400,
57 'aus central' => 34200, 'aus eastern' => 36000,
58 'azores' => -3600, 'canada central' => -21600,
59 'cape verde' => -3600, 'caucasus' => 14400,
60 'cen. australia' => 34200, 'central america' => -21600,
61 'central asia' => 21600, 'central europe' => 3600,
62 'central european' => 3600, 'central pacific' => 39600,
63 'central' => -21600, 'china' => 28800,
64 'dateline' => -43200, 'e. africa' => 10800,
65 'e. australia' => 36000, 'e. europe' => 7200,
66 'e. south america' => -10800, 'eastern' => -18000,
67 'egypt' => 7200, 'ekaterinburg' => 18000,
68 'fiji' => 43200, 'fle' => 7200,
69 'greenland' => -10800, 'greenwich' => 0,
70 'gtb' => 7200, 'hawaiian' => -36000,
71 'india' => 19800, 'iran' => 12600,
72 'jerusalem' => 7200, 'korea' => 32400,
73 'mexico' => -21600, 'mid-atlantic' => -7200,
74 'mountain' => -25200, 'myanmar' => 23400,
75 'n. central asia' => 21600, 'nepal' => 20700,
76 'new zealand' => 43200, 'newfoundland' => -12600,
77 'north asia east' => 28800, 'north asia' => 25200,
78 'pacific sa' => -14400, 'pacific' => -28800,
79 'romance' => 3600, 'russian' => 10800,
80 'sa eastern' => -10800, 'sa pacific' => -18000,
81 'sa western' => -14400, 'samoa' => -39600,
82 'se asia' => 25200, 'malay peninsula' => 28800,
83 'south africa' => 7200, 'sri lanka' => 21600,
84 'taipei' => 28800, 'tasmania' => 36000,
85 'tokyo' => 32400, 'tonga' => 46800,
86 'us eastern' => -18000, 'us mountain' => -25200,
87 'vladivostok' => 36000, 'w. australia' => 28800,
88 'w. central africa' => 3600, 'w. europe' => 3600,
89 'west asia' => 18000, 'west pacific' => 36000,
90 'yakutsk' => 32400
91 }
92
93 [MONTHS, DAYS, ABBR_MONTHS, ABBR_DAYS, ZONES].each do |x|
94 x.freeze
95 end
96
97 class Bag # :nodoc:
98
99 def initialize
100 @elem = {}
101 end
102
103 def method_missing(t, *args, &block)
104 t = t.to_s
105 set = t.chomp!('=')
106 t = t.intern
107 if set
108 @elem[t] = args[0]
109 else
110 @elem[t]
111 end
112 end
113
114 def to_hash
115 @elem.reject{|k, v| /\A_/ =~ k.to_s || v.nil?}
116 end
117
118 end
119
120 end
121
122 def emit(e, f) # :nodoc:
123 case e
124 when Numeric
125 sign = %w(+ + -)[e <=> 0]
126 e = e.abs
127 end
128
129 s = e.to_s
130
131 if f[:s] && f[:p] == '0'
132 f[:w] -= 1
133 end
134
135 if f[:s] && f[:p] == "\s"
136 s[0,0] = sign
137 end
138
139 if f[:p] != '-'
140 s = s.rjust(f[:w], f[:p])
141 end
142
143 if f[:s] && f[:p] != "\s"
144 s[0,0] = sign
145 end
146
147 s = s.upcase if f[:u]
148 s = s.downcase if f[:d]
149 s
150 end
151
152 def emit_w(e, w, f) # :nodoc:
153 f[:w] = [f[:w], w].compact.max
154 emit(e, f)
155 end
156
157 def emit_n(e, w, f) # :nodoc:
158 f[:p] ||= '0'
159 emit_w(e, w, f)
160 end
161
162 def emit_sn(e, w, f) # :nodoc:
163 if e < 0
164 w += 1
165 f[:s] = true
166 end
167 emit_n(e, w, f)
168 end
169
170 def emit_z(e, w, f) # :nodoc:
171 w += 1
172 f[:s] = true
173 emit_n(e, w, f)
174 end
175
176 def emit_a(e, w, f) # :nodoc:
177 f[:p] ||= "\s"
178 emit_w(e, w, f)
179 end
180
181 def emit_ad(e, w, f) # :nodoc:
182 if f[:x]
183 f[:u] = true
184 f[:d] = false
185 end
186 emit_a(e, w, f)
187 end
188
189 def emit_au(e, w, f) # :nodoc:
190 if f[:x]
191 f[:u] = false
192 f[:d] = true
193 end
194 emit_a(e, w, f)
195 end
196
197 private :emit, :emit_w, :emit_n, :emit_sn, :emit_z,
198 :emit_a, :emit_ad, :emit_au
199
200 def strftime(fmt='%F')
201 fmt.gsub(/%([-_0^#]+)?(\d+)?[EO]?(:{1,3}z|.)/m) do |m|
202 f = {}
203 s, w, c = $1, $2, $3
204 if s
205 s.scan(/./) do |k|
206 case k
207 when '-'; f[:p] = '-'
208 when '_'; f[:p] = "\s"
209 when '0'; f[:p] = '0'
210 when '^'; f[:u] = true
211 when '#'; f[:x] = true
212 end
213 end
214 end
215 if w
216 f[:w] = w.to_i
217 end
218 case c
219 when 'A'; emit_ad(DAYNAMES[wday], 0, f)
220 when 'a'; emit_ad(ABBR_DAYNAMES[wday], 0, f)
221 when 'B'; emit_ad(MONTHNAMES[mon], 0, f)
222 when 'b'; emit_ad(ABBR_MONTHNAMES[mon], 0, f)
223 when 'C'; emit_sn((year / 100).floor, 2, f)
224 when 'c'; emit_a(strftime('%a %b %e %H:%M:%S %Y'), 0, f)
225 when 'D'; emit_a(strftime('%m/%d/%y'), 0, f)
226 when 'd'; emit_n(mday, 2, f)
227 when 'e'; emit_a(mday, 2, f)
228 when 'F'
229 if m == '%F'
230 format('%.4d-%02d-%02d', year, mon, mday) # 4p
231 else
232 emit_a(strftime('%Y-%m-%d'), 0, f)
233 end
234 when 'G'; emit_sn(cwyear, 4, f)
235 when 'g'; emit_n(cwyear % 100, 2, f)
236 when 'H'; emit_n(hour, 2, f)
237 when 'h'; emit_ad(strftime('%b'), 0, f)
238 when 'I'; emit_n((hour % 12).nonzero? || 12, 2, f)
239 when 'j'; emit_n(yday, 3, f)
240 when 'k'; emit_a(hour, 2, f)
241 when 'L'
242 emit_n((sec_fraction / (1.to_r/86400/(10**3))).round, 3, f)
243 when 'l'; emit_a((hour % 12).nonzero? || 12, 2, f)
244 when 'M'; emit_n(min, 2, f)
245 when 'm'; emit_n(mon, 2, f)
246 when 'N'
247 emit_n((sec_fraction / (1.to_r/86400/(10**9))).round, 9, f)
248 when 'n'; "\n"
249 when 'P'; emit_ad(strftime('%p').downcase, 0, f)
250 when 'p'; emit_au(if hour < 12 then 'AM' else 'PM' end, 0, f)
251 when 'Q'
252 d = ajd - self.class.jd_to_ajd(self.class::UNIXEPOCH, 0)
253 s = (d * 86400*10**3).to_i
254 emit_sn(s, 1, f)
255 when 'R'; emit_a(strftime('%H:%M'), 0, f)
256 when 'r'; emit_a(strftime('%I:%M:%S %p'), 0, f)
257 when 'S'; emit_n(sec, 2, f)
258 when 's'
259 d = ajd - self.class.jd_to_ajd(self.class::UNIXEPOCH, 0)
260 s = (d * 86400).to_i
261 emit_sn(s, 1, f)
262 when 'T'
263 if m == '%T'
264 format('%02d:%02d:%02d', hour, min, sec) # 4p
265 else
266 emit_a(strftime('%H:%M:%S'), 0, f)
267 end
268 when 't'; "\t"
269 when 'U', 'W'
270 emit_n(if c == 'U' then wnum0 else wnum1 end, 2, f)
271 when 'u'; emit_n(cwday, 1, f)
272 when 'V'; emit_n(cweek, 2, f)
273 when 'v'; emit_a(strftime('%e-%b-%Y'), 0, f)
274 when 'w'; emit_n(wday, 1, f)
275 when 'X'; emit_a(strftime('%H:%M:%S'), 0, f)
276 when 'x'; emit_a(strftime('%m/%d/%y'), 0, f)
277 when 'Y'; emit_sn(year, 4, f)
278 when 'y'; emit_n(year % 100, 2, f)
279 when 'Z'; emit_au(strftime('%:z'), 0, f)
280 when /\A(:{0,3})z/
281 t = $1.size
282 sign = if offset < 0 then -1 else +1 end
283 fr = offset.abs
284 hh, fr = fr.divmod(1.to_r/24)
285 mm, fr = fr.divmod(1.to_r/1440)
286 ss, fr = fr.divmod(1.to_r/86400)
287 if t == 3
288 if ss.nonzero? then t = 2
289 elsif mm.nonzero? then t = 1
290 else t = -1
291 end
292 end
293 case t
294 when -1
295 tail = []
296 sep = ''
297 when 0
298 f[:w] -= 2 if f[:w]
299 tail = ['%02d' % mm]
300 sep = ''
301 when 1
302 f[:w] -= 3 if f[:w]
303 tail = ['%02d' % mm]
304 sep = ':'
305 when 2
306 f[:w] -= 6 if f[:w]
307 tail = ['%02d' % mm, '%02d' % ss]
308 sep = ':'
309 end
310 ([emit_z(sign * hh, 2, f)] + tail).join(sep)
311 when '%'; emit_a('%', 0, f)
312 when '+'; emit_a(strftime('%a %b %e %H:%M:%S %Z %Y'), 0, f)
313 when '1'
314 if $VERBOSE
315 warn("warning: strftime: %1 is deprecated; forget this")
316 end
317 emit_n(jd, 1, f)
318 when '2'
319 if $VERBOSE
320 warn("warning: strftime: %2 is deprecated; use '%Y-%j'")
321 end
322 emit_a(strftime('%Y-%j'), 0, f)
323 when '3'
324 if $VERBOSE
325 warn("warning: strftime: %3 is deprecated; use '%F'")
326 end
327 emit_a(strftime('%F'), 0, f)
328 else
329 c
330 end
331 end
332 end
333
334# alias_method :format, :strftime
335
336 def asctime() strftime('%c') end
337
338 alias_method :ctime, :asctime
339
340=begin
341 def iso8601() strftime('%F') end
342
343 def rfc3339() iso8601 end
344
345 def rfc2822() strftime('%a, %-d %b %Y %T %z') end
346
347 alias_method :rfc822, :rfc2822
348
349 def jisx0301
350 if jd < 2405160
351 iso8601
352 else
353 case jd
354 when 2405160...2419614
355 g = 'M%02d' % (year - 1867)
356 when 2419614...2424875
357 g = 'T%02d' % (year - 1911)
358 when 2424875...2447535
359 g = 'S%02d' % (year - 1925)
360 else
361 g = 'H%02d' % (year - 1988)
362 end
363 g + strftime('.%m.%d')
364 end
365 end
366
367 def beat(n=0)
368 i, f = (new_offset(1.to_r/24).day_fraction * 1000).divmod(1)
369 ('@%03d' % i) +
370 if n < 1
371 ''
372 else
373 '.%0*d' % [n, (f / (1.to_r/(10**n))).round]
374 end
375 end
376=end
377
378 def self.num_pattern? (s) # :nodoc:
379 /\A%[EO]?[CDdeFGgHIjkLlMmNQRrSsTUuVvWwXxYy\d]/ =~ s || /\A\d/ =~ s
380 end
381
382 private_class_method :num_pattern?
383
384 def self._strptime_i(str, fmt, e) # :nodoc:
385 fmt.scan(/%[EO]?(:{1,3}z|.)|(.)/m) do |s, c|
386 if s
387 case s
388 when 'A', 'a'
389 return unless str.sub!(/\A(#{Format::DAYS.keys.join('|')})/io, '') ||
390 str.sub!(/\A(#{Format::ABBR_DAYS.keys.join('|')})/io, '')
391 val = Format::DAYS[$1.downcase] || Format::ABBR_DAYS[$1.downcase]
392 return unless val
393 e.wday = val
394 when 'B', 'b', 'h'
395 return unless str.sub!(/\A(#{Format::MONTHS.keys.join('|')})/io, '') ||
396 str.sub!(/\A(#{Format::ABBR_MONTHS.keys.join('|')})/io, '')
397 val = Format::MONTHS[$1.downcase] || Format::ABBR_MONTHS[$1.downcase]
398 return unless val
399 e.mon = val
400 when 'C'
401 return unless str.sub!(if num_pattern?($')
402 then /\A([-+]?\d{1,2})/
403 else /\A([-+]?\d{1,})/
404 end, '')
405 val = $1.to_i
406 e._cent = val
407 when 'c'
408 return unless _strptime_i(str, '%a %b %e %H:%M:%S %Y', e)
409 when 'D'
410 return unless _strptime_i(str, '%m/%d/%y', e)
411 when 'd', 'e'
412 return unless str.sub!(/\A( \d|\d{1,2})/, '')
413 val = $1.to_i
414 return unless (1..31) === val
415 e.mday = val
416 when 'F'
417 return unless _strptime_i(str, '%Y-%m-%d', e)
418 when 'G'
419 return unless str.sub!(if num_pattern?($')
420 then /\A([-+]?\d{1,4})/
421 else /\A([-+]?\d{1,})/
422 end, '')
423 val = $1.to_i
424 e.cwyear = val
425 when 'g'
426 return unless str.sub!(/\A(\d{1,2})/, '')
427 val = $1.to_i
428 return unless (0..99) === val
429 e.cwyear = val
430 e._cent ||= if val >= 69 then 19 else 20 end
431 when 'H', 'k'
432 return unless str.sub!(/\A( \d|\d{1,2})/, '')
433 val = $1.to_i
434 return unless (0..24) === val
435 e.hour = val
436 when 'I', 'l'
437 return unless str.sub!(/\A( \d|\d{1,2})/, '')
438 val = $1.to_i
439 return unless (1..12) === val
440 e.hour = val
441 when 'j'
442 return unless str.sub!(/\A(\d{1,3})/, '')
443 val = $1.to_i
444 return unless (1..366) === val
445 e.yday = val
446 when 'L'
447 return unless str.sub!(if num_pattern?($')
448 then /\A([-+]?\d{1,3})/
449 else /\A([-+]?\d{1,})/
450 end, '')
451# val = $1.to_i.to_r / (10**3)
452 val = $1.to_i.to_r / (10**$1.size)
453 e.sec_fraction = val
454 when 'M'
455 return unless str.sub!(/\A(\d{1,2})/, '')
456 val = $1.to_i
457 return unless (0..59) === val
458 e.min = val
459 when 'm'
460 return unless str.sub!(/\A(\d{1,2})/, '')
461 val = $1.to_i
462 return unless (1..12) === val
463 e.mon = val
464 when 'N'
465 return unless str.sub!(if num_pattern?($')
466 then /\A([-+]?\d{1,9})/
467 else /\A([-+]?\d{1,})/
468 end, '')
469# val = $1.to_i.to_r / (10**9)
470 val = $1.to_i.to_r / (10**$1.size)
471 e.sec_fraction = val
472 when 'n', 't'
473 return unless _strptime_i(str, "\s", e)
474 when 'P', 'p'
475 return unless str.sub!(/\A([ap])(?:m\b|\.m\.)/i, '')
476 e._merid = if $1.downcase == 'a' then 0 else 12 end
477 when 'Q'
478 return unless str.sub!(/\A(-?\d{1,})/, '')
479 val = $1.to_i.to_r / 10**3
480 e.seconds = val
481 when 'R'
482 return unless _strptime_i(str, '%H:%M', e)
483 when 'r'
484 return unless _strptime_i(str, '%I:%M:%S %p', e)
485 when 'S'
486 return unless str.sub!(/\A(\d{1,2})/, '')
487 val = $1.to_i
488 return unless (0..60) === val
489 e.sec = val
490 when 's'
491 return unless str.sub!(/\A(-?\d{1,})/, '')
492 val = $1.to_i
493 e.seconds = val
494 when 'T'
495 return unless _strptime_i(str, '%H:%M:%S', e)
496 when 'U', 'W'
497 return unless str.sub!(/\A(\d{1,2})/, '')
498 val = $1.to_i
499 return unless (0..53) === val
500 e.__send__(if s == 'U' then :wnum0= else :wnum1= end, val)
501 when 'u'
502 return unless str.sub!(/\A(\d{1})/, '')
503 val = $1.to_i
504 return unless (1..7) === val
505 e.cwday = val
506 when 'V'
507 return unless str.sub!(/\A(\d{1,2})/, '')
508 val = $1.to_i
509 return unless (1..53) === val
510 e.cweek = val
511 when 'v'
512 return unless _strptime_i(str, '%e-%b-%Y', e)
513 when 'w'
514 return unless str.sub!(/\A(\d{1})/, '')
515 val = $1.to_i
516 return unless (0..6) === val
517 e.wday = val
518 when 'X'
519 return unless _strptime_i(str, '%H:%M:%S', e)
520 when 'x'
521 return unless _strptime_i(str, '%m/%d/%y', e)
522 when 'Y'
523 return unless str.sub!(if num_pattern?($')
524 then /\A([-+]?\d{1,4})/
525 else /\A([-+]?\d{1,})/
526 end, '')
527 val = $1.to_i
528 e.year = val
529 when 'y'
530 return unless str.sub!(/\A(\d{1,2})/, '')
531 val = $1.to_i
532 return unless (0..99) === val
533 e.year = val
534 e._cent ||= if val >= 69 then 19 else 20 end
535 when 'Z', /\A:{0,3}z/
536 return unless str.sub!(/\A((?:gmt|utc?)?[-+]\d+(?:[,.:]\d+(?::\d+)?)?
537 |[a-z.\s]+(?:standard|daylight)\s+time\b
538 |[a-z]+(?:\s+dst)?\b
539 )/ix, '')
540 val = $1
541 e.zone = val
542 offset = zone_to_diff(val)
543 e.offset = offset
544 when '%'
545 return unless str.sub!(/\A%/, '')
546 when '+'
547 return unless _strptime_i(str, '%a %b %e %H:%M:%S %Z %Y', e)
548 when '1'
549 if $VERBOSE
550 warn("warning: strptime: %1 is deprecated; forget this")
551 end
552 return unless str.sub!(/\A(\d+)/, '')
553 val = $1.to_i
554 e.jd = val
555 when '2'
556 if $VERBOSE
557 warn("warning: strptime: %2 is deprecated; use '%Y-%j'")
558 end
559 return unless _strptime_i(str, '%Y-%j', e)
560 when '3'
561 if $VERBOSE
562 warn("warning: strptime: %3 is deprecated; use '%F'")
563 end
564 return unless _strptime_i(str, '%F', e)
565 else
566 return unless str.sub!(Regexp.new('\\A' + Regexp.quote(s)), '')
567 end
568 else
569 case c
570 when /\A[\s\v]/
571 str.sub!(/\A[\s\v]+/, '')
572 else
573 return unless str.sub!(Regexp.new('\\A' + Regexp.quote(c)), '')
574 end
575 end
576 end
577 end
578
579 private_class_method :_strptime_i
580
581 def self._strptime(str, fmt='%F')
582 e = Format::Bag.new
583 return unless _strptime_i(str.dup, fmt, e)
584
585 if e._cent
586 if e.cwyear
587 e.cwyear += e._cent * 100
588 end
589 if e.year
590 e. year += e._cent * 100
591 end
592 end
593
594 if e._merid
595 if e.hour
596 e.hour %= 12
597 e.hour += e._merid
598 end
599 end
600
601 e.to_hash
602 end
603
604 def self.s3e(e, y, m, d, bc=false)
605 unless String === m
606 m = m.to_s
607 end
608
609 if y == nil
610 if d && d.size > 2
611 y = d
612 d = nil
613 end
614 if d && d[0,1] == "'"
615 y = d
616 d = nil
617 end
618 end
619
620 if y
621 y.scan(/(\d+)(.+)?/)
622 if $2
623 y, d = d, $1
624 end
625 end
626
627 if m
628 if m[0,1] == "'" || m.size > 2
629 y, m, d = m, d, y # us -> be
630 end
631 end
632
633 if d
634 if d[0,1] == "'" || d.size > 2
635 y, d = d, y
636 end
637 end
638
639 if y
640 y =~ /([-+])?(\d+)/
641 if $1 || $2.size > 2
642 c = false
643 end
644 iy = $&.to_i
645 if bc
646 iy = -iy + 1
647 end
648 e.year = iy
649 end
650
651 if m
652 m =~ /\d+/
653 e.mon = $&.to_i
654 end
655
656 if d
657 d =~ /\d+/
658 e.mday = $&.to_i
659 end
660
661 if c != nil
662 e._comp = c
663 end
664
665 end
666
667 private_class_method :s3e
668
669 def self._parse_day(str, e) # :nodoc:
670 if str.sub!(/\b(#{Format::ABBR_DAYS.keys.join('|')})[^-\d\s]*/ino, ' ')
671 e.wday = Format::ABBR_DAYS[$1.downcase]
672 true
673=begin
674 elsif str.sub!(/\b(?!\dth)(su|mo|tu|we|th|fr|sa)\b/in, ' ')
675 e.wday = %w(su mo tu we th fr sa).index($1.downcase)
676 true
677=end
678 end
679 end
680
681 def self._parse_time(str, e) # :nodoc:
682 if str.sub!(
683 /(
684 (?:
685 \d+\s*:\s*\d+
686 (?:
687 \s*:\s*\d+(?:[,.]\d*)?
688 )?
689 |
690 \d+\s*h(?:\s*\d+m?(?:\s*\d+s?)?)?
691 )
692 (?:
693 \s*
694 [ap](?:m\b|\.m\.)
695 )?
696 |
697 \d+\s*[ap](?:m\b|\.m\.)
698 )
699 (?:
700 \s*
701 (
702 (?:gmt|utc?)?[-+]\d+(?:[,.:]\d+(?::\d+)?)?
703 |
704 [a-z.\s]+(?:standard|daylight)\stime\b
705 |
706 [a-z]+(?:\sdst)?\b
707 )
708 )?
709 /inx,
710 ' ')
711
712 t = $1
713 e.zone = $2 if $2
714
715 t =~ /\A(\d+)h?
716 (?:\s*:?\s*(\d+)m?
717 (?:
718 \s*:?\s*(\d+)(?:[,.](\d+))?s?
719 )?
720 )?
721 (?:\s*([ap])(?:m\b|\.m\.))?/inx
722
723 e.hour = $1.to_i
724 e.min = $2.to_i if $2
725 e.sec = $3.to_i if $3
726 e.sec_fraction = $4.to_i.to_r / (10**$4.size) if $4
727
728 if $5
729 e.hour %= 12
730 if $5.downcase == 'p'
731 e.hour += 12
732 end
733 end
734 true
735 end
736 end
737
738 def self._parse_beat(str, e) # :nodoc:
739 if str.sub!(/@\s*(\d+)(?:[,.](\d*))?/, ' ')
740 beat = $1.to_i.to_r
741 beat += $2.to_i.to_r / (10**$2.size) if $2
742 secs = beat.to_r / 1000
743 h, min, s, fr = self.day_fraction_to_time(secs)
744 e.hour = h
745 e.min = min
746 e.sec = s
747 e.sec_fraction = fr * 86400
748 e.zone = '+01:00'
749 true
750 end
751 end
752
753 def self._parse_eu(str, e) # :nodoc:
754 if str.sub!(
755 /'?(\d+)[^-\d\s]*
756 \s*
757 (#{Format::ABBR_MONTHS.keys.join('|')})[^-\d\s']*
758 (?:
759 \s*
760 (c(?:e|\.e\.)|b(?:ce|\.c\.e\.)|a(?:d|\.d\.)|b(?:c|\.c\.))?
761 \s*
762 ('?-?\d+(?:(?:st|nd|rd|th)\b)?)
763 )?
764 /inox,
765 ' ') # '
766 s3e(e, $4, Format::ABBR_MONTHS[$2.downcase], $1,
767 $3 && $3[0,1].downcase == 'b')
768 true
769 end
770 end
771
772 def self._parse_us(str, e) # :nodoc:
773 if str.sub!(
774 /\b(#{Format::ABBR_MONTHS.keys.join('|')})[^-\d\s']*
775 \s*
776 ('?\d+)[^-\d\s']*
777 (?:
778 \s*
779 (c(?:e|\.e\.)|b(?:ce|\.c\.e\.)|a(?:d|\.d\.)|b(?:c|\.c\.))?
780 \s*
781 ('?-?\d+)
782 )?
783 /inox,
784 ' ') # '
785 s3e(e, $4, Format::ABBR_MONTHS[$1.downcase], $2,
786 $3 && $3[0,1].downcase == 'b')
787 true
788 end
789 end
790
791 def self._parse_iso(str, e) # :nodoc:
792 if str.sub!(/('?[-+]?\d+)-(\d+)-('?-?\d+)/n, ' ')
793 s3e(e, $1, $2, $3)
794 true
795 end
796 end
797
798 def self._parse_iso2(str, e) # :nodoc:
799 if str.sub!(/\b(\d{2}|\d{4})?-?w(\d{2})(?:-?(\d+))?/in, ' ')
800 e.cwyear = $1.to_i if $1
801 e.cweek = $2.to_i
802 e.cwday = $3.to_i if $3
803 true
804 elsif str.sub!(/--(\d{2})-(\d{2})\b/n, ' ')
805 e.mon = $1.to_i
806 e.mday = $2.to_i
807 true
808 elsif str.sub!(/\b(\d{2}|\d{4})-(\d{2,3})\b/n, ' ')
809 e.year = $1.to_i
810 if $2.size < 3
811 e.mon = $2.to_i
812 else
813 e.yday = $2.to_i
814 end
815 true
816 end
817 end
818
819 def self._parse_jis(str, e) # :nodoc:
820 if str.sub!(/\b([MTSH])(\d+)\.(\d+)\.(\d+)/in, ' ')
821 era = { 'm'=>1867,
822 't'=>1911,
823 's'=>1925,
824 'h'=>1988
825 }[$1.downcase]
826 e.year = $2.to_i + era
827 e.mon = $3.to_i
828 e.mday = $4.to_i
829 true
830 end
831 end
832
833 def self._parse_vms(str, e) # :nodoc:
834 if str.sub!(/('?-?\d+)-(#{Format::ABBR_MONTHS.keys.join('|')})[^-]*
835 -('?-?\d+)/inox, ' ')
836 s3e(e, $3, Format::ABBR_MONTHS[$2.downcase], $1)
837 true
838 elsif str.sub!(/\b(#{Format::ABBR_MONTHS.keys.join('|')})[^-]*
839 -('?-?\d+)(?:-('?-?\d+))?/inox, ' ')
840 s3e(e, $3, Format::ABBR_MONTHS[$1.downcase], $2)
841 true
842 end
843 end
844
845 def self._parse_sla_ja(str, e) # :nodoc:
846 if str.sub!(%r|('?-?\d+)[/.]\s*('?\d+)(?:[^\d]\s*('?-?\d+))?|n, ' ') # '
847 s3e(e, $1, $2, $3)
848 true
849 end
850 end
851
852 def self._parse_sla_eu(str, e) # :nodoc:
853 if str.sub!(%r|('?-?\d+)[/.]\s*('?\d+)(?:[^\d]\s*('?-?\d+))?|n, ' ') # '
854 s3e(e, $3, $2, $1)
855 true
856 end
857 end
858
859 def self._parse_sla_us(str, e) # :nodoc:
860 if str.sub!(%r|('?-?\d+)[/.]\s*('?\d+)(?:[^\d]\s*('?-?\d+))?|n, ' ') # '
861 s3e(e, $3, $1, $2)
862 true
863 end
864 end
865
866 def self._parse_year(str, e) # :nodoc:
867 if str.sub!(/'(\d+)\b/in, ' ')
868 e.year = $1.to_i
869 true
870 end
871 end
872
873 def self._parse_mon(str, e) # :nodoc:
874 if str.sub!(/\b(#{Format::ABBR_MONTHS.keys.join('|')})\S*/ino, ' ')
875 e.mon = Format::ABBR_MONTHS[$1.downcase]
876 true
877 end
878 end
879
880 def self._parse_mday(str, e) # :nodoc:
881 if str.sub!(/(\d+)(st|nd|rd|th)\b/in, ' ')
882 e.mday = $1.to_i
883 true
884 end
885 end
886
887 def self._parse_ddd(str, e) # :nodoc:
888 if str.sub!(
889 /([-+]?)(\d{2,14})
890 (?:
891 \s*
892 T?
893 \s*
894 (\d{2,6})(?:[,.](\d*))?
895 )?
896 (?:
897 \s*
898 (
899 Z
900 |
901 [-+]\d{1,4}
902 )
903 \b
904 )?
905 /inx,
906 ' ')
907 case $2.size
908 when 2
909 e.mday = $2[ 0, 2].to_i
910 when 4
911 e.mon = $2[ 0, 2].to_i
912 e.mday = $2[ 2, 2].to_i
913 when 6
914 e.year = ($1 + $2[ 0, 2]).to_i
915 e.mon = $2[ 2, 2].to_i
916 e.mday = $2[ 4, 2].to_i
917 when 8, 10, 12, 14
918 e.year = ($1 + $2[ 0, 4]).to_i
919 e.mon = $2[ 4, 2].to_i
920 e.mday = $2[ 6, 2].to_i
921 e.hour = $2[ 8, 2].to_i if $2.size >= 10
922 e.min = $2[10, 2].to_i if $2.size >= 12
923 e.sec = $2[12, 2].to_i if $2.size >= 14
924 e._comp = false
925 when 3
926 e.yday = $2[ 0, 3].to_i
927 when 5
928 e.year = ($1 + $2[ 0, 2]).to_i
929 e.yday = $2[ 2, 3].to_i
930 when 7
931 e.year = ($1 + $2[ 0, 4]).to_i
932 e.yday = $2[ 4, 3].to_i
933 end
934 if $3
935 case $3.size
936 when 2, 4, 6
937 e.hour = $3[ 0, 2].to_i
938 e.min = $3[ 2, 2].to_i if $3.size >= 4
939 e.sec = $3[ 4, 2].to_i if $3.size >= 6
940 end
941 end
942 if $4
943 e.sec_fraction = $4.to_i.to_r / (10**$4.size)
944 end
945 if $5
946 e.zone = $5
947 end
948 true
949 end
950 end
951
952 private_class_method :_parse_day, :_parse_time, :_parse_beat,
953 :_parse_eu, :_parse_us, :_parse_iso, :_parse_iso2,
954 :_parse_jis, :_parse_vms,
955 :_parse_sla_ja, :_parse_sla_eu, :_parse_sla_us,
956 :_parse_year, :_parse_mon, :_parse_mday, :_parse_ddd
957
958 def self._parse(str, comp=false)
959 str = str.dup
960
961 e = Format::Bag.new
962
963 e._comp = comp
964
965 str.gsub!(/[^-+',.\/:0-9@a-z\x80-\xff]+/in, ' ')
966
967 _parse_time(str, e) # || _parse_beat(str, e)
968 _parse_day(str, e)
969
970 _parse_eu(str, e) ||
971 _parse_us(str, e) ||
972 _parse_iso(str, e) ||
973 _parse_jis(str, e) ||
974 _parse_vms(str, e) ||
975 _parse_sla_us(str, e) ||
976 _parse_iso2(str, e) ||
977 _parse_year(str, e) ||
978 _parse_mon(str, e) ||
979 _parse_mday(str, e) ||
980 _parse_ddd(str, e)
981
982 if str.sub!(/\b(bc\b|bce\b|b\.c\.|b\.c\.e\.)/in, ' ')
983 if e.year
984 e.year = -e.year + 1
985 end
986 end
987
988 if str.sub!(/\A\s*(\d{1,2})\s*\z/n, ' ')
989 if e.hour && !e.mday
990 v = $1.to_i
991 if (1..31) === v
992 e.mday = v
993 end
994 end
995 if e.mday && !e.hour
996 v = $1.to_i
997 if (0..24) === v
998 e.hour = v
999 end
1000 end
1001 end
1002
1003 if e._comp and e.year
1004 if e.year >= 0 and e.year <= 99
1005 if e.year >= 69
1006 e.year += 1900
1007 else
1008 e.year += 2000
1009 end
1010 end
1011 end
1012
1013 e.offset ||= zone_to_diff(e.zone) if e.zone
1014
1015 e.to_hash
1016 end
1017
1018 def self.zone_to_diff(zone) # :nodoc:
1019 zone = zone.downcase
1020 if zone.sub!(/\s+(standard|daylight)\s+time\z/, '')
1021 dst = $1 == 'daylight'
1022 else
1023 dst = zone.sub!(/\s+dst\z/, '')
1024 end
1025 if Format::ZONES.include?(zone)
1026 offset = Format::ZONES[zone]
1027 offset += 3600 if dst
1028 elsif zone.sub!(/\A(?:gmt|utc?)?([-+])/, '')
1029 sign = $1
1030 if zone.include?(':')
1031 hour, min, sec, = zone.split(':')
1032 elsif zone.include?(',') || zone.include?('.')
1033 hour, fr, = zone.split(/[,.]/)
1034 min = fr.to_i.to_r / (10**fr.size) * 60
1035 else
1036 case zone.size
1037 when 3
1038 hour = zone[0,1]
1039 min = zone[1,2]
1040 else
1041 hour = zone[0,2]
1042 min = zone[2,2]
1043 sec = zone[4,2]
1044 end
1045 end
1046 offset = hour.to_i * 3600 + min.to_i * 60 + sec.to_i
1047 offset *= -1 if sign == '-'
1048 end
1049 offset
1050 end
1051
1052end
1053
1054class DateTime < Date
1055
1056 def strftime(fmt='%FT%T%:z')
1057 super(fmt)
1058 end
1059
1060 def self._strptime(str, fmt='%FT%T%z')
1061 super(str, fmt)
1062 end
1063
1064=begin
1065 def iso8601_timediv(n) # :nodoc:
1066 strftime('T%T' +
1067 if n < 1
1068 ''
1069 else
1070 '.%0*d' % [n, (sec_fraction / (1.to_r/86400/(10**n))).round]
1071 end +
1072 '%:z')
1073 end
1074
1075 private :iso8601_timediv
1076
1077 def iso8601(n=0)
1078 super() + iso8601_timediv(n)
1079 end
1080
1081 def rfc3339(n=0) iso8601(n) end
1082
1083 def jisx0301(n=0)
1084 super() + iso8601_timediv(n)
1085 end
1086=end
1087
1088end
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