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5.2 Resource file examples

Here are some examples of problem oriented resource files which might be useful to get a deeper impression about the attributes of Gcal’s fixed date feature.

Let us begin with a common example, the resource file common.rc: 

$ cat common.rc
-| ; common.rc, a common example of a resource file.
-| ;
-| 19940715 Local time: %t  --> Dentist at 10:00
-| 00000921 My %B1962  birthday%i1952#2062
-| 0000093 Gregorian~Reformation\~is %y1752  years ago
-| 0000Sep03 Gregorian~Reformation\~is %y1752 years ago
-| 0 Every day in every month in every year
-| 0000 Every day in every month in every year
-| 00000000 Every day in every month in every year
-| 199400fri        Every Friday in 1994
-| 000007mo3 Every third Monday~in July every year less 1980%i#1979
-| 0000@e-10 Easter Sunday-10 days every year
-| 0@e-10 Easter Sunday-10 days every year
-| 0000@e+10 Easter Sunday+10 days every year
-| a=1127
-| 0@a+20 20 days after date of date variable `a'
-| a=*W10FR
-| 0@a-1 The Thursday of the 10th week every year
-| 0@a   The Friday of the 10th week every year
-| 0@a1  The Saturday of the 10th week every year
-| 1995*d10    The 10th absolute day in 1995
-| 1995*d99tue The last Tuesday in 1995
-| 0*w99su The Sunday of the last week every year
-| ;
-| ; Next entry is respected by ALL fixed date period modifiers.
-| ;
-| 1994*d1sun#99SUN.7 Each Sunday in 1994
-| ;
-| ; Day of Prayer & Repentance is Wednesday before the Sunday,
-| ;   which is before the 1st Advent's Sunday.
-| ;
-| a=1225
-| a=a-5sun
-| 0@a-4 Day of Prayer & Repentance
-| ; or
-| 0@a-1wed Day of Prayer & Repentance

And here is a resource file by the name of demo-1.rc, used to detect all Fridays the 13th of a year: 

$ cat demo-1.rc
-| ; demo-1.rc
-| ;
-| $a=Friday the 13th%i0000
-| $b=#0000
-| $c=fri2
-| $d=fri3
-| 00000113 $a01$c$b01$c
-| 00000113 $a01$d$b01$d
-| 00000213 $a02$c$b02$c
-| 00000213 $a02$d$b02$d
-| 00000313 $a03$c$b03$c
-| 00000313 $a03$d$b03$d
-| 00000413 $a04$c$b04$c
-| 00000413 $a04$d$b04$d
-| 00000513 $a05$c$b05$c
-| 00000513 $a05$d$b05$d
-| 00000613 $a06$c$b06$c
-| 00000613 $a06$d$b06$d
-| 00000713 $a07$c$b07$c
-| 00000713 $a07$d$b07$d
-| 00000813 $a08$c$b08$c
-| 00000813 $a08$d$b08$d
-| 00000913 $a09$c$b09$c
-| 00000913 $a09$d$b09$d
-| 00001013 $a10$c$b10$c
-| 00001013 $a10$d$b10$d
-| 00001113 $a11$c$b11$c
-| 00001113 $a11$d$b11$d
-| 00001213 $a12$c$b12$c
-| 00001213 $a12$d$b12$d

The result for the years 1996…2002 is as follows: 

$ gcal -H no -u -x -f ./demo-1.rc 1996+2002
-|
-| Fri, Sep  13th 1996: Friday the 13th
-| Fri, Dec  13th 1996: Friday the 13th
-|
-| Fri, Jun  13th 1997: Friday the 13th
-|
-| Fri, Feb  13th 1998: Friday the 13th
-| Fri, Mar  13th 1998: Friday the 13th
-| Fri, Nov  13th 1998: Friday the 13th
-|
-| Fri, Aug  13th 1999: Friday the 13th
-|
-| Fri, Oct  13th 2000: Friday the 13th
-|
-| Fri, Apr  13th 2001: Friday the 13th
-| Fri, Jul  13th 2001: Friday the 13th
-|
-| Fri, Sep  13th 2002: Friday the 13th
-| Fri, Dec  13th 2002: Friday the 13th

Or a bit shorter version of the resource file demo-1.rc by the name of demo-2.rc, likewise used to detect all Fridays the 13th of a year, and that by using the fact, that a Friday the 13th only occurs if the first day of a month is a Sunday: 

$ cat demo-2.rc
-| ; demo-2.rc
-| ;
-| $a=%n+12 is a Friday%i0000
-| $b=#0000
-| $c=sun1
-| 00000101 $a01$c$b01$c
-| 00000201 $a02$c$b02$c
-| 00000301 $a03$c$b03$c
-| 00000401 $a04$c$b04$c
-| 00000501 $a05$c$b05$c
-| 00000601 $a06$c$b06$c
-| 00000701 $a07$c$b07$c
-| 00000801 $a08$c$b08$c
-| 00000901 $a09$c$b09$c
-| 00001001 $a10$c$b10$c
-| 00001101 $a11$c$b11$c
-| 00001201 $a12$c$b12$c

The result for the years 1996…2002 is as follows: 

$ gcal -H no -u -x -f ./demo-2.rc 1996+2002
-|
-| Sun, Sep   1st 1996: 13-Sep-1996 is a Friday
-| Sun, Dec   1st 1996: 13-Dec-1996 is a Friday
-|
-| Sun, Jun   1st 1997: 13-Jun-1997 is a Friday
-|
-| Sun, Feb   1st 1998: 13-Feb-1998 is a Friday
-| Sun, Mar   1st 1998: 13-Mar-1998 is a Friday
-| Sun, Nov   1st 1998: 13-Nov-1998 is a Friday
-|
-| Sun, Aug   1st 1999: 13-Aug-1999 is a Friday
-|
-| Sun, Oct   1st 2000: 13-Oct-2000 is a Friday
-|
-| Sun, Apr   1st 2001: 13-Apr-2001 is a Friday
-| Sun, Jul   1st 2001: 13-Jul-2001 is a Friday
-|
-| Sun, Sep   1st 2002: 13-Sep-2002 is a Friday
-| Sun, Dec   1st 2002: 13-Dec-2002 is a Friday

Of course, preceding textual expense for the purpose of detecting all Fridays the 13th of a year can be dramatically reduced by simply using of 

0*d1fri#99fri.7 Friday the 13th%i00000013#00000013

in the resource file demo-1.rc, respectively, 

0*d1sun#99sun.7 %n+12 is a Friday%i00000001#00000001

in the demo-2.rc resource file.

On the one hand, preceding one-liners reduce the coding expense quite considerably —from 28 respectively 15 lines to 1 line in each case—, but on the other hand, this partly increases the checking expense of these one-liners considerably and result in a longer program run-time therefore. Both one-liners produce about 52 internal productions respectively effective fixed date entries of themselves for each year checked by Gcal, at which the demo-1.rc and demo-2.rc resource files cause 24 respectively 12 effective fixed date entries only.

And here is a resource file by the name of demo-3.rc, used to detect all working-days of any month: 

$ cat demo-3.rc
-| ; demo-3.rc
-| ;
-| $a=%VWork day
-| $c=%i#0000$b99
-| a=$bmon1
-| 0@a#+4 $a
-| a=$btue1
-| 0@a#+3 $a
-| a=$bwed1
-| 0@a#+2 $a
-| a=$bthu1
-| 0@a#+1 $a
-| a=$bfri1
-| 0@a $a
-| a=$bmon2
-| 0@a#+4 $a
-| a=$bmon3
-| 0@a#+4 $a
-| a=$bmon4
-| 0@a#+4 $a$c
-| a=$bmon9
-| 0@a#+4 $a$c

Respectively a bit shorter version of the resource file demo-3.rc: 

; demo-3.rc
;
$a=%VWork day
$c=%i#0000$b99
0000$bmon1:5 $a
0000$btue1:4 $a
0000$bwed1:3 $a
0000$bthu1:2 $a
0000$bfri1:1 $a
0000$bmon2:5 $a
0000$bmon3:5 $a
0000$bmon4:5 $a$c
0000$bmon9:5 $a$c

And a resource file by the name of include.rc exists which is only used to include one given resource file: 

$ cat include.rc
-| #include "$f"

Then the result for the month August 1996 is as follows: 

$ gcal -H no -u -x -r '$b=08:$f=demo-3.rc' -f ./include.rc Aug 1996
-|
-| Thu, Aug   1st 1996: Work day
-| Fri, Aug   2nd 1996: Work day
-| Mon, Aug   5th 1996: Work day
-| Tue, Aug   6th 1996: Work day
-| Wed, Aug   7th 1996: Work day
-| Thu, Aug   8th 1996: Work day
-| Fri, Aug   9th 1996: Work day
-| Mon, Aug  12th 1996: Work day
-| Tue, Aug  13th 1996: Work day
-| Wed, Aug  14th 1996: Work day
-| Thu, Aug  15th 1996: Work day
-| Fri, Aug  16th 1996: Work day
-| Mon, Aug  19th 1996: Work day
-| Tue, Aug  20th 1996: Work day
-| Wed, Aug  21st 1996: Work day
-| Thu, Aug  22nd 1996: Work day
-| Fri, Aug  23rd 1996: Work day
-| Mon, Aug  26th 1996: Work day
-| Tue, Aug  27th 1996: Work day
-| Wed, Aug  28th 1996: Work day
-| Thu, Aug  29th 1996: Work day
-| Fri, Aug  30th 1996: Work day

And of course, the preceding textual expense for the purpose of detecting all work days of any month can be dramatically reduced by simply using of 

00000001#0099 %V%rWork day

in the resource file demo-3.rc.

And next the resource file by the name of sun-1.rc which detects the actual local time, the approximate time of sunrise and sunset, day and night length of two geographic locations: 

$ cat sun-1.rc
-| ; sun-1.rc, comparison of sunrise / sunset, day length and night
-| ; length of two locations, namely:  Muenster.DE / Bangkok.TH
-| ; All references are based on Muenster.DE !
-| ;
-| ; Common definitions
-| $p=0*d1#999
-| $v=%2%4 for that places local time
-| $z=actual local time in
-| ; Definitions for winter time
-| $a=%e#1980 %e0@a#0@b-1
-| $x=Sun:~%o$c,$w rise, %s$c,$w set, %u$c,$w day, %z$c,$w night~$l
-| ; Winter time in Germany == CEWT/GMT-1 (+60 minutes)
-| $w=+60
-| ; Starting date of winter time in Germany
-| b=10sun9
-| ; Definitions for summer time (daylight-saving time)
-| $b=%e#1980 %i0@a#0@b-1
-| $y=Sun:~%o$c,$s rise, %s$c,$s set, %u$c,$s day, %z$c,$s night~$l
-| ; Summer time in Germany == CEST/GMT-2 (+120 minutes)
-| $s=+120
-| ; Starting date of summer time in Germany
-| a=03sun9
-| ; Geographic co-ordinate and name of the location Muenster, Germany
-| $c=+5158+00738+61
-| $l=%1Muenster
-| ; Muenster's local time sunrise etc. for that places local time
-| $p $a $x$v
-| $p $b $y$v
-| ; Muenster's actual local time
-| 0 $a %1%@$w %2 $z $l
-| 0 $b %1%@$s %2 $z $l
-| ; Geographic co-ordinate and name of the location Bangkok, Thailand
-| $c=+1345+10031+10
-| $l=%3Bangkok%4-time converted to $l's%2 local time
-| ; Bangkok's sunrise etc. based on Muenster's local time
-| $p $a $x
-| $p $b $y
-| ; Bangkok's local time == WAST/GMT-7 (+420 minutes)
-| $t=+420
-| $w=$t
-| ; Bangkok's actual local time
-| $l=%3Bangkok
-| 0 $a %3%@$t %4 $z $l
-| 0 $b %3%@$t %4 $z $l
-| ; Bangkok's sunrise etc. for that places local time
-| $l=$l$v
-| $p $x

The result for the 12th September 1999 is as follows: 

$ gcal -fsun-1.rc -Ux -Hno
-|
-| 18:53/12-Sep-1999 actual local time in Muenster
-| 23:53/12-Sep-1999 actual local time in Bangkok
-| Sun:
-| 01:06rise, 13:22set, 12h16'day, 11h44'night
-| Bangkok-time converted to Muenster's local time
-| Sun:
-| 06:06rise, 18:22set, 12h16'day, 11h44'night
-| Bangkok for that places local time
-| Sun:
-| 06:56rise, 19:54set, 12h58'day, 11h02'night
-| Muenster for that places local time

The next example is the resource file redir-1.rc which demonstrates the use of the shell command %![argument] special text: 

$ cat redir-1.rc
-| ; redir.rc, run shell command $c and redirect it to $f
-| ;
-| $p=0*d1#999
-| $c=$p %!$c
-| $g=|txt2gcal - $p
-| ;
-| $c $g>$f

The result of succeeding call of Gcal, to which you can also add the --debug=all option for a better understanding of the execution methods, is as follows: 

$ gcal --exe -QUx -f./redir-1.rc+XX -r'$f=XX:$c=echo $f' -#'0 %!rm $f'
-| XX

And finally a resource file by the name of swtim-1.rc which produces fixed date messages reminding Daylight Saving that are valid since 1981 for the Federal Republic of Germany67. 

$ cat swtim-1.rc
-| ; swtim-1.rc, daylight-saving time BRD
-| ;
-| $a=daylight-saving time starts Sunday
-| ;
-| a=03sun9
-| 0@a-2#+2 Summer $a~+1 hrs. (02:00 --> 03:00 h.)%i1981
-| ;
-| a=09sun9
-| 0@a-2#+2 Winter $a~-1 hrs. (03:00 --> 02:00 h.)%i1981#1995
-| ;
-| a=10sun9
-| 0@a-2#+2 Winter $a~-1 hrs. (03:00 --> 02:00 h.)%i1996

The result for the year 1998 is as follows: 

$ gcal %1998 -Hno -xy -f ./swtim-1.rc
-|
-| Fri, Mar  27th 1998: Summer daylight-saving time starts Sunday
-|                      +1 hrs. (02:00 --> 03:00 h.)
-| Sat, Mar  28th 1998: Summer daylight-saving time starts Sunday
-|                      +1 hrs. (02:00 --> 03:00 h.)
-| Sun, Mar  29th 1998: Summer daylight-saving time starts Sunday
-|                      +1 hrs. (02:00 --> 03:00 h.)
-| Mon, Mar  30th 1998: Summer daylight-saving time starts Sunday
-|                      +1 hrs. (02:00 --> 03:00 h.)
-| Tue, Mar  31st 1998: Summer daylight-saving time starts Sunday
-|                      +1 hrs. (02:00 --> 03:00 h.)
-| Fri, Oct  23rd 1998: Winter daylight-saving time starts Sunday
-|                      -1 hrs. (03:00 --> 02:00 h.)
-| Sat, Oct  24th 1998: Winter daylight-saving time starts Sunday
-|                      -1 hrs. (03:00 --> 02:00 h.)
-| Sun, Oct  25th 1998: Winter daylight-saving time starts Sunday
-|                      -1 hrs. (03:00 --> 02:00 h.)
-| Mon, Oct  26th 1998: Winter daylight-saving time starts Sunday
-|                      -1 hrs. (03:00 --> 02:00 h.)
-| Tue, Oct  27th 1998: Winter daylight-saving time starts Sunday
-|                      -1 hrs. (03:00 --> 02:00 h.)

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