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3 michaesp 1 
      PROGRAM datelist
2 
 
3 
c     **********************************************************************
4 
c     * Handling of date lists                                             *
5 
c     * Michael Sprenger                                                   *
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c     **********************************************************************
7 
 
8 
      implicit none
9 
 
10 
c     ---------------------------------------------------------------------
11 
c     Declaration of variables
12 
c     ---------------------------------------------------------------------
13 
 
14 
c     Parameters
15 
      character*80              datefile
16 
      character*80              mode
17 
      character*80              startdate
18 
      character*80              finaldate
19 
      character*80              refdate
20 
      integer                   interval
21 
 
22 
c     Date list
23 
      integer                   ndates
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      integer,allocatable,dimension(:)    :: year,month,day,hour
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26 
c     Auxiliary variables
27 
      integer                     i
28 
      integer                     year1,month1,day1,hour1,min1
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      integer                     year2,month2,day2,hour2,min2
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      character                   direction
31 
      integer                     date1(5),date2(5)
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      character*11                datestr
33 
      character                   ch
34 
      real                        diff
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      real                        time
36 
 
37 
c     ---------------------------------------------------------------------
38 
c     Preparations
39 
c     ---------------------------------------------------------------------
40 
 
41 
c     Read parameter file
42 
      open(10,file='datelist.param')
43 
 
44 
       read(10,*) datefile                           ! General parameters
45 
       read(10,*) mode
46 
 
47 
       if ( mode.eq.'-create' ) then                 ! Create date list
48 
          read(10,*) startdate
49 
          read(10,*) finaldate
50 
          read(10,*) interval
51 
 
52 
       elseif ( mode.eq.'-totime' ) then             ! Convert to time list
53 
          read(10,*) refdate
54 
 
55 
       elseif ( mode.eq.'-todate' ) then             ! Convert to date list
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          read(10,*) refdate
57 
 
58 
       else                                          ! Invalid mode
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          print*,' ERROR: invalid mode for datelist'
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          stop
61 
       endif
62 
 
63 
      close(10)
64 
 
65 
c     ---------------------------------------------------------------------
66 
c     Create a date list (-create)
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c     ---------------------------------------------------------------------
68 
 
69 
      if ( mode.ne.'-create' ) goto 100
70 
 
71 
c     Check whether interval is ok
72 
      if ( ( interval.le.0 ).or.(interval.gt.24) ) then
73 
         print*,'Interval must be between 1 h and 24 h... Stop'
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         stop
75 
      endif
76 
 
77 
c     Extract dates and times
78 
      read(startdate( 1: 4),*) year1
79 
      read(startdate( 5: 6),*) month1
80 
      read(startdate( 7: 8),*) day1
81 
      read(startdate(10:11),*) hour1
82 
      read(startdate(12:13),*) min1
83 
 
84 
      read(finaldate( 1: 4),*) year2
85 
      read(finaldate( 5: 6),*) month2
86 
      read(finaldate( 7: 8),*) day2
87 
      read(finaldate(10:11),*) hour2
88 
      read(startdate(12:13),*) min2
89 
 
90 
c     Get direction of the date file
91 
      if (year2.gt.year1) then
92 
         direction = 'f'
93 
         goto 101
94 
      elseif (year2.lt.year1) then
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         direction = 'b'
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         goto 101
97 
      endif
98 
 
99 
      if (month2.gt.month1) then
100 
         direction = 'f'
101 
         goto 101
102 
      elseif (month2.lt.month1) then
103 
         direction = 'b'
104 
         goto 101
105 
      endif
106 
 
107 
      if (day2.gt.day1) then
108 
         direction = 'f'
109 
         goto 101
110 
      elseif (day2.lt.day1) then
111 
         direction = 'b'
112 
         goto 101
113 
      endif
114 
 
115 
      if (hour2.gt.hour1) then
116 
         direction = 'f'
117 
         goto 101
118 
      elseif (hour2.lt.hour1) then
119 
         direction = 'b'
120 
         goto 101
121 
      endif
122 
 
123 
      if (min2.gt.min1) then
124 
         direction = 'f'
125 
         goto 101
126 
      elseif (min2.lt.min1) then
127 
         direction = 'b'
128 
         goto 101
129 
      endif
130 
 
131 
      direction = 'f'
132 
 
133 
 101  continue
134 
 
135 
c     Set the interval step depending on the direction
136 
      if ( direction.eq.'b' ) then
137 
         interval = -interval
138 
      endif
139 
 
140 
c     Save the dates in arrays
141 
      date1(1) = year1
142 
      date1(2) = month1
143 
      date1(3) = day1
144 
      date1(4) = hour1
145 
      date1(5) = 0
146 
 
147 
      date2(1) = year2
148 
      date2(2) = month2
149 
      date2(3) = day2
150 
      date2(4) = hour2
151 
      date2(5) = 0
152 
 
153 
 
154 
c     Get starting and ending date for the date list
155 
      if ( direction.eq.'f' ) then
156 
 
157 
         do while ( mod(date1(4),interval) .ne. 0 )
158 
            date1(4) = date1(4) - 1
159 
         enddo
160 
 
161 
         if (min2.ne.0) call newdate(date2,1.,date2)
162 
 
163 
         do while ( mod(date2(4),interval) .ne. 0 )
164 
            date2(4) = date2(4) + 1
165 
         enddo
166 
 
167 
      else
168 
 
169 
         if (min1.ne.0) call newdate(date1,1.,date1)
170 
 
171 
         do while ( mod(date1(4),interval) .ne. 0 )
172 
            date1(4) = date1(4) + 1
173 
         enddo
174 
 
175 
         do while ( mod(date2(4),interval) .ne. 0 )
176 
            date2(4) = date2(4) - 1
177 
         enddo
178 
 
179 
      endif
180 
 
181 
c     Create and write the datefile
182 
      if ( datefile.ne.'/dev/stdout') then
183 
         open(10,file=datefile)
184 
      endif
185 
 
186 
 102  continue
187 
 
188 
       call datestring(datestr,date1(1),date1(2),date1(3),date1(4) )
189 
 
190 
       if ( datefile.ne.'/dev/stdout') then
191 
          write(10,*) datestr
192 
       else
193 
          write(*,*) datestr
194 
       endif
195 
 
196 
       if ( ( date1(1).ne.date2(1) ).or.
197 
     >      ( date1(2).ne.date2(2) ).or.
198 
     >      ( date1(3).ne.date2(3) ).or.
199 
     >      ( date1(4).ne.date2(4) ) )
200 
     > then
201 
          diff = real(interval)
202 
          call newdate(date1,diff,date1)
203 
          goto 102
204 
       endif
205 
 
206 
      if ( datefile.ne.'/dev/stdout') then
207 
         close(10)
208 
      endif
209 
 
210 
 100  continue
211 
 
212 
c     ---------------------------------------------------------------------
213 
c     Convert dates to a list of times
214 
c     ---------------------------------------------------------------------
215 
 
216 
      if ( mode.ne.'-totime' ) goto 110
217 
 
218 
c     Extract reference date
219 
      read(refdate( 1: 4),*) year1
220 
      read(refdate( 5: 6),*) month1
221 
      read(refdate( 7: 8),*) day1
222 
      read(refdate(10:11),*) hour1
223 
      read(refdate(12:13),*) min1
224 
 
225 
c     Loop through the date file
226 
      open(10,file=datefile)
227 
 
228 
 111  read(10,*,end=110) datestr
229 
 
230 
c     Extract date
231 
      read(datestr( 1: 4),*) year2
232 
      read(datestr( 5: 6),*) month2
233 
      read(datestr( 7: 8),*) day2
234 
      read(datestr(10:11),*) hour2
235 
      min1 = 0
236 
 
237 
c     Get the time difference
238 
      date1(1) = year1
239 
      date1(2) = month1
240 
      date1(3) = day1
241 
      date1(4) = hour1
242 
      date1(5) = 0
243 
 
244 
      date2(1) = year2
245 
      date2(2) = month2
246 
      date2(3) = day2
247 
      date2(4) = hour2
248 
      date2(5) = 0
249 
 
250 
      call timediff(date2,date1,diff)
251 
 
252 
 
253 
c     Write it to screen
5 michaesp 254 
      write(*,'(i6)') nint(diff)
3 michaesp 255 
 
256 
      goto 111
257 
 
258 
 110  continue
259 
 
260 
c     Close datefile
261 
      close(10)
262 
 
263 
c     ---------------------------------------------------------------------
264 
c     Convert times to a list of dates
265 
c     ---------------------------------------------------------------------
266 
 
267 
      if ( mode.ne.'-todate' ) goto 120
268 
 
269 
c     Extract reference date
270 
      read(refdate( 1: 4),*) year1
271 
      read(refdate( 5: 6),*) month1
272 
      read(refdate( 7: 8),*) day1
273 
      read(refdate(10:11),*) hour1
274 
      read(refdate(12:13),*) min1
275 
 
276 
c     Loop through the date file
277 
      open(10,file=datefile)
278 
 
279 
 121  read(10,*,end=120) time
280 
 
281 
c     Calculate the new date
282 
      date1(1) = year1
283 
      date1(2) = month1
284 
      date1(3) = day1
285 
      date1(4) = hour1
286 
      date1(5) = 0
287 
      call newdate(date1,time,date2)
288 
      call datestring(datestr,date2(1),date2(2),date2(3),date2(4) )
289 
 
290 
c     Write it to screen
5 michaesp 291 
      write(*,'(a11)') trim(datestr)
3 michaesp 292 
 
293 
      goto 121
294 
 
295 
 120  continue
296 
 
297 
c     Close datefile
298 
      close(10)
299 
 
300 
c     ---------------------------------------------------------------------
301 
c     End
302 
c     ---------------------------------------------------------------------
303 
 
304 
      end
305