alpar@1: /* cal.mod - print an ASCII calendar of the given year */
alpar@1: 
alpar@1: /* Written in GNU MathProg by Andrew Makhorin <mao@gnu.org> */
alpar@1: 
alpar@1: param year, integer, >= 0001, <= 3999, default 2010;
alpar@1: 
alpar@1: param first_day{m in 1..12}, integer, >= 0, <= 6, :=
alpar@1:       time2str(str2time(year & "-" & m & "-01", "%Y-%m-%d"), "%w");
alpar@1: 
alpar@1: param days_in_month{m in 1..12}, integer, >= 28, <= 31, :=
alpar@1:       (str2time(year + (if m < 12 then 0 else 1) & "-" &
alpar@1:          (if m < 12 then m+1 else 1) & "-01", "%Y-%m-%d") -
alpar@1:       str2time(year & "-" & m & "-01", "%Y-%m-%d")) / 86400;
alpar@1: 
alpar@1: param foo{m in 1..12, k in 0..5, d in 0..6}, integer, :=
alpar@1:       7 * k + d + 1 - first_day[m];
alpar@1: 
alpar@1: param cal{m in 1..12, k in 0..5, d in 0..6}, integer, :=
alpar@1:       if 1 <= foo[m,k,d] and foo[m,k,d] <= days_in_month[m] then
alpar@1:          foo[m,k,d];
alpar@1: 
alpar@1: printf "\n";
alpar@1: printf "%33s%04d\n", "", year;
alpar@1: printf "\n";
alpar@1: for {t in 1..12 by 3}
alpar@1: {     for {m in t..t+2}
alpar@1:       {  printf "%7s%-14s", "", time2str(str2time(m, "%m"), "%B");
alpar@1:          printf{0..0: m < t+2} "   ";
alpar@1:       }
alpar@1:       printf "\n";
alpar@1:       for {m in t..t+2}
alpar@1:       {  printf "  S  M Tu  W Th  F  S";
alpar@1:          printf{0..0: m < t+2} "   ";
alpar@1:       }
alpar@1:       printf "\n";
alpar@1:       for {k in 0..5}
alpar@1:       {  for {m in t..t+2}
alpar@1:          {  for {d in 0..6}
alpar@1:             {  printf{0..0: cal[m,k,d]  = 0} "   ";
alpar@1:                printf{0..0: cal[m,k,d] != 0} " %2d", cal[m,k,d];
alpar@1:             }
alpar@1:             printf{0..0: m < t+2} "   ";
alpar@1:          }
alpar@1:          printf "\n";
alpar@1:       }
alpar@1: }
alpar@1: printf "\n";
alpar@1: 
alpar@1: end;