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#!/usr/bin/mawk -We # $MawkId: hcal,v 1.6 2020/09/24 22:05:19 tom Exp $ # vile:ts=4 sw=4 # edit the above to be the full pathname of 'mawk' # @(#) hcal - v01.00.02 - Tue Feb 27 21:21:21 EST 1996 # @(#) prints a 3-month (highlighted) calendar centered on the target month # @(#) may be edited for week to start with Sun or Mon & for local language # @(#) to display a usage screen, execute: hcal -h # NOTE: to edit, set ts=4 in 'vi' (or equivalent) # to print, pipe through 'pr -t -e4' # Using ideas from a KornShell script by Mikhail Kuperblum (mikhail@klm.com) # Bob Stockler - bob@trebor.iglou.com - Sysop CompuServe SCOForum [75162,1612] BEGIN { # Local Edits: PROG = "hcal" # Program name given to this script # FMT = 0 # date format dd/mm/yyyy # FMT1 = 0 # for weekdays ordered "Mo Tu We Th Fr Sa Su" FMT = 1 # date format mm/dd/yyyy FMT1 = 1 # for weekdays ordered "Su Mo Tu We Th Fr Sa" # edit day & month names and abbreviations for local language names Days[0] = "Mo Tu We Th Fr Sa Su" Days[1] = "Su Mo Tu We Th Fr Sa" MONTHS = "January February March April May June July August" MONTHS = MONTHS " September October November December" Months = "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec" # STDOUT = 0 # emulate SCO Unix 'cal' (NO highlighting) STDOUT = 1 # default to highlight mode MINUS = "-" # possible input date field delimiter SLASH = "/" # possible input date field delimiter DOT = "." # possible input date field delimiter IDFD = "[" MINUS # make MINUS the first character in this series IDFD = IDFD SLASH # so that it stands for itself in the RE IDFD = IDFD DOT "]" # Input Date Field Delimiters RE ODFD = SLASH # Output Date Field Delimiter (default) DATE_FMT = "%.2d%s%.2d%s%.4d" # date format ## this script presumes 'date' recognizes these arguments in these ways: ## w - Day of the week - Sunday = 0 ## m - Month of year - 01 to 12 ## d - Day of month - 01 to 31 ## y Last 2 digits of year - 00 to 99 ## Y - Year (including century), as decimal numbers ## j - Day of the year - 001 to 366 (Julian date) ## T - Time as HH:MM:SS ## X Current time, as defined by the locale ## a - Abbreviated weekday - Sun to Sat ## b - Abbreviated month name ## Z - Timezone name, or no characters if no timezone exists ## Command to get today's date information: ## DATE = "/bin/date '+%w %m %d 19%y %j~%a %b %d %T %Z 19%y'" ## For sunos4 ## DATE = DATE = "/bin/date '+%w %m %d 19%y %j~%a %h %d %T 19%y'" DATE = "/bin/date '+%w %m %d %Y %j~%a %b %d %X %Z %Y'" # End of Local Edits INT_RE = "^[0-9]+$" # unsigned integer RE S_INT_RE = "^[-+][0-9]+$" # signed integer RE MNAM_RE = "^[A-Za-z]+$" # month name RE YEAR_RE = "^[0-9]?[0-9]?[0-9]?[0-9]$" DATE_RE = "^[0-9]?[0-9]" IDFD "[0-9]?[0-9]" IDFD "[0-9]?[0-9]?[0-9]?[0-9]$" DAT1_RE = "^[0-9]?[0-9]" IDFD "[0-9]?[0-9]$" split(Months,M_Name) split("31 28 31 30 31 30 31 31 30 31 30 31",Mdays) ; Mdays[0] = 0 ERR = 0 HELP = 0 RMSO = 0 NUM_ARGS = ARGC - 1 if ( ARGV[1] == "-x" ) { # standout mode switch if ( STDOUT == 1 ) STDOUT = 0 ; else STDOUT = 1 ARG1 = ARGV[2] ; ARG2 = ARGV[3] ; NUM_ARGS -= 1 } else if ( ARGV[1] ~ /^-[h?]$/ ) { HELP = 1 ; exit } else { ARG1 = ARGV[1] ; ARG2 = ARGV[2] } if ( STDOUT == 1 ) { # get the terminal standout-start & standout-end control codes so = ENVIRON["so"] ; if ( ! so ) "tput smso" | getline so se = ENVIRON["se"] ; if ( ! se ) "tput rmso" | getline se } if ( NUM_ARGS == 0 ) { # no arguments - print a calendar display centered on today DEFAULT = 1 } else if ( NUM_ARGS == 1 ) { # one argument - may be a month name, date, year, or interval of days if ( ARG1 ~ DATE_RE ) DATE1 = Fmt_Date(ARG1) else if ( ARG1 ~ DAT1_RE ) DATE1 = ARG1 else if ( ARG1 ~ MNAM_RE ) { Get_Mnum() ; DATE1 = RMSO = ARG1 "/1" } else if ( ARG1 ~ S_INT_RE ) INTERVAL = ARG1 + 0 else if ( ARG1 ~ INT_RE ) { if ( ARG1 > 0 && ARG1 <= 9999 ) YEAR = ARG1 + 0 else if ( ARG1 > 9999 ) { ERR = 9 ; exit } else { ERR = 7 ; exit } } else { ERR = 1 ; exit } } else if ( NUM_ARGS == 2 ) { # two arguments, the second of which must be an integer if ( ARG2 ~ INT_RE ) { ARG2 = ARG2 + 0 if ( ARG2 < 1 ) { ERR = 7 ; exit } else if ( ARG2 > 9999 ) { ERR = 9 ; exit } } else { ERR = 1 ; exit } RMSO = 1 # the first may be a string or an integer if ( ARG1 ~ INT_RE ) { # a month number and a year if ( ARG1 < 1 || ARG1 > 12 ) { ERR = 4 ; mm = ARG1 ; exit } } else if ( ARG1 ~ MNAM_RE ) { Get_Mnum() } else { ERR = 6 ; exit } DATE1 = ARG1 "/1/" ARG2 } else { ERR = 2 ; exit } if ( DEFAULT ) { Get_Now() } else if ( INTERVAL ) { Get_Now() daynum = daynum + ( INTERVAL % 7 ) this_date = "" DATE1 = Get_Date(INTERVAL,m,d,y,j) split(DATE1,mdy,IDFD) Mon[2] = mdy[1] + 0 today = mdy[2] + 0 Year[1] = Year[2] = Year[3] = mdy[3] + 0 } else if ( DATE1 ) { Get_Now() if ( split(DATE1,mdy,IDFD) == 2 ) DATE1 = DATE1 "/" This_Year Chk_Date(DATE1) Mon[2] = mdy[1] + 0 today = mdy[2] + 0 Year[1] = Year[2] = Year[3] = mdy[3] + 0 DATE1 = sprintf( "%.2d/%.2d/%.4d", Mon[2], today, Year[2] ) INTERVAL = Get_Num(DATE1,m,d,y,j) daynum = daynum + ( INTERVAL % 7 ) this_date = "" } else if ( YEAR ) { so = se = "" Get_Now() Mon[2] = 2 today = 1 Year[1] = Year[2] = Year[3] = YEAR DATE1 = sprintf( "%.2d/%.2d/%.4d", Mon[2], today, Year[2] ) INTERVAL = Get_Num(DATE1,m,d,y,j) daynum = daynum + ( INTERVAL % 7 ) this_date = "" } else { ERR = 5 ; exit } if ( Mon[2] != 1 ) Mon[1] = Mon[2] - 1 else { Mon[1] = 12 ; Year[1] -= 1 } if ( Mon[2] != 12 ) Mon[3] = Mon[2] + 1 else { Mon[3] = 1 ; Year[3] += 1 } if ( Mon[1] == 2 ) Leap(Year[1]) else if ( Mon[2] == 2 ) Leap(Year[2]) else if ( Mon[3] == 2 ) Leap(Year[3]) Start[2] = 7 - ( ( today - daynum ) % 7 ) Start[1] = 7 - ( ( Mdays[Mon[1]] - Start[2] ) % 7 ) Start[3] = ( Mdays[Mon[2]] + Start[2] ) % 7 if ( ! YEAR ) quarters = 1 else { quarters = 4 ; s[3] = Start[3] for (i=4;i<=12;i++) { s[i] = ( Mdays[i-1] + s[i-1] ) % 7 } } ll = 0 for ( quarter = 1 ; quarter <= quarters ; quarter++ ) { if ( quarter > 1 ) { delete cal ll = 0 ; Mon[1] += 3 ; Mon[2] += 3 ; Mon[3] += 3 Start[1] = s[Mon[1]] ; Start[2] = s[Mon[2]] ; Start[3] = s[Mon[3]] } if ( Year[2] == 1752 && Mon[2] ~ /8|9|10/ ) Kludge_1752() if ( ARG1 ) print "" ; else printf( "\n%s\n\n", this_date ) for (i=1;i<=3;i++) { while ( Start[i] >= 7 ) Start[i] -= 7 } for (mm=1;mm<=3;mm++) { l = 1 if ( mm != 2 ) { So = Se = "" } else { So = so ; Se = se } cal[mm SUBSEP l++] = sprintf( "%s %-4s%.4d %s ", \ So, M_Name[Mon[mm]], Year[mm], Se ) cal[mm SUBSEP l++] = sprintf( "%s%3s", Days[FMT1], "" ) j = k = 1 while ( j <= Mdays[Mon[mm]] ) { line = "" for (i=1;i<=7;i++) { if ( Start[mm] > 0 || j > Mdays[Mon[mm]] ) { date = "" ; Start[mm]-- } else date = j++ if ( Year[mm] == 1752 && Mon[mm] == 9 && date == 3 ) { date = 14 ; j = 15 } if ( date == today && mm == 2 && ! RMSO ) { So = so ; Se = se } else { So = Se = "" } line = sprintf( "%s%s%2s%s ", line, So, date, Se ) } cal[mm SUBSEP l++] = sprintf( "%s ", line ) } if ( l > ll ) ll = l } for (l=1;l<ll;l++) { for (mm=1;mm<=3;mm++) { if ( cal[mm SUBSEP l] != "" ) printf( cal[mm SUBSEP l] ) else printf( "%23s", "" ) if ( mm % 3 == 0 ) print "" } } } print "" exit 0 } END { if ( ! HELP && ! ERR ) exit 0 if ( ERR ) { for (i=1;i<ARGC;i++) { ARGS = ARGS sp ARGV[i] ; sp = " " } if ( ERR == 1 ) msg = "Bad argument format or content:" else if ( ERR == 2 ) msg = "Wrong argument count (" ARGC - 1 "):" else if ( ERR == 3 ) msg = "Date before 01/01/0001 (" Get_Y1() "):" else if ( ERR == 4 ) msg = "Bad month (" mm "):" else if ( ERR == 5 ) msg = "Bad date (" dd "):" else if ( ERR == 6 ) msg = "Impossible date:" else if ( ERR == 7 ) msg = "The was no year 0000:" else if ( ERR == 8 ) msg = "Non-unique month name (" ARG1 "):" else if ( ERR == 9 ) msg = "Year greater than 9999:" else msg = "Unknown error:" HELP = 1 ; q = "\"" } if ( HELP ) { if ( FMT == 1 ) { fmt = "[m]m/[d]d[/yyyy]" ; range = "12/31/9999" } else { fmt = "[d]d/[m]m[/yyyy]" ; range = "31/12/9999" } if ( STDOUT == 0 ) n = " not " ; else n = " " ; sp = " " u= "\n Usage: " PROG " [-x] [args]\n\n" sp u=u "Prints a 3-month calendar centered on the target month.\n\n" sp u=u "The default is" n "to highlight the target month (and date if\n" sp u=u "appropriate); -x switches the default highlight behavior.\n" sp u=u "With no arguments the target date defaults to today.\n\n" sp u=u "Arguments may be a date in " fmt " format (where\n" sp u=u "leading 0's are implied in all unfilled fields, defaulting\n" sp u=u "to the current year if that field is omitted); a month and\n" sp u=u "year (where month may be an integer or a month name, perhaps\n" sp u=u "abbreviated, but sufficient to be unique); or the month name\n" sp u=u "alone (which defaults to the current year); or a year alone\n" sp u=u "(which prints a 12-month calendar for that year).\n\n" sp u=u "A signed integer alone as an argument specifies the target\n" sp u=u "date to be -n days before or +n days after the current date.\n\n" sp u=u "Dates from 01/01/0001 to " range " are supported.\n" usage = u } printf( "\n%s: %s %s%s%s\n", PROG, msg, q, ARGS, q ) >"/dev/tty" print usage >"/dev/tty" exit ERR } function Get_Now() { # get the week, month, date & year numbers and the time-of-day DATE | getline date split(date,Date,"~") split(Date[1],field) daynum = field[1] + FMT1 m = field[2] ; This_Mon = Mon[2] = m + 0 d = field[3] ; This_Date = today = d + 0 y = This_Year = Year[1] = Year[2] = Year[3] = field[4] j = julian = field[5] + 0 this_date = Date[2] } function Fmt_Date(fmt_date) { # format dates as mm/dd/yyyy or dd/mm/yyyy split(fmt_date,MorD_DorM_Y,IDFD) if ( FMT == 1 ) { Dt_Fld1 = MorD_DorM_Y[1] ; Dt_Fld2 = MorD_DorM_Y[2] } else { Dt_Fld1 = MorD_DorM_Y[2] ; Dt_Fld2 = MorD_DorM_Y[1] } Dt_Fld3 = MorD_DorM_Y[3] return sprintf( DATE_FMT, Dt_Fld1, ODFD, Dt_Fld2, ODFD, Dt_Fld3 ) } function Kludge_1752() { # kludge for September 1752 & the change to the Gregorian Calendar Mdays[9] = 30 if ( Mon[2] == 9 ) { Start[1] = Start[2] = 1 + FMT1 ; Start[3] = -1 + FMT1 } else if ( Mon[2] == 8 ) { Start[1] = 2 + FMT1 ; Start[2] = 5 + FMT1 ; Start[3] = 1 + FMT1 } else if ( Mon[2] == 10 ) { Start[1] = 1 + FMT1 ; Start[2] = -1 + FMT1 ; Start[3] = 3 } } function Get_Mnum() { ARG1 = tolower(ARG1) months = tolower(MONTHS) split(months,month) for (i=1;i<=12;i++) { if ( index(month[i],ARG1) == 1 ) { ARG = i ; n++ } } if ( n == 1 ) ARG1 = ARG else if ( n == 0 ) { ERR = 1 ; exit } else { ERR = 8 ; exit } } function Get_Num(get_date,get_m,get_d,get_y,get_j) { # get the number of days from one date to another date NOW = get_y get_m get_d ; N = 0 ; M = get_m + 0 ; D = get_d + 0 ; Y = get_y + 0 ; J = get_j + 0 split(get_date,mdy,IDFD) M2 = mdy[1] ; D2 = mdy[2] ; Y2 = mdy[3] THEN = Y2 M2 D2 ; M2 = M2 + 0 ; D2 = D2 + 0 ; Y2 = Y2 + 0 Leap(Y2) if ( M2 > 12 ) { ERR = 4 ; exit } if ( D2 > Mdays[M2] && Y2 != 1752 && M2 != 9 ) { ERR = 5 ; exit } if ( THEN ~ /^1752090[3-9]$|^1752091[0-3]$/ ) { ERR = 6 ; exit } Leap(Y) if ( THEN > NOW ) { Ydays = Ydays - J + 1 ; mdays = Mdays[M] - D + 1 while ( Y < Y2 ) Next_Y() while ( M < M2 ) Next_M() while ( D < D2 ) Next_D() N *= -1 } else { Ydays = J ; mdays = D while ( Y > Y2 ) Prev_Y() while ( M > M2 ) Prev_M() if ( Y == 1752 && M == 9 && D == 19 ) D = 30 while ( D > D2 ) Prev_D() } return N } function Get_Date(get_n,get_m,get_d,get_y,get_j) { # get the date a number of days before or after a date N = get_n + 0 ; M = get_m + 0 ; D = get_d + 0 ; Y = get_y + 0 ; J = get_j + 0 if ( N != 0 ) { Leap(Y) if ( N > 0 ) { Ydays = Ydays - J + 1 ; mdays = Mdays[M] - D + 1 while ( N >= Ydays ) { Next_Y() ; Leap(Y) } while ( N >= ( ( mdays > 0 ) ? mdays : Mdays[M] ) ) { Next_M() } while ( N > 0 ) Next_D() } else { Ydays = J ; mdays = D ; N *= -1 while ( N >= Ydays ) { Prev_Y() ; Leap(Y) } while ( N >= ( ( mdays > 0 ) ? mdays : Mdays[M] ) ) { Prev_M() } if ( Y == 1752 && M == 9 && D == 19 ) D = 30 while ( N > 0 ) Prev_D() } if ( Y < 1 ) { ERR = 3 ; exit } } return M ODFD D ODFD Y } function Leap(YR) { # adjust for Leap Years if ( YR % 4 == 0 && ( YR % 100 != 0 || YR % 400 == 0 || YR < 1800 ) ) { Ydays = 366 ; Mdays[2] = 29 } else { Ydays = 365 ; Mdays[2] = 28 } if ( YR != 1752 ) Mdays[9] = 30 else { Ydays = 355 ; Mdays[9] = 19 } } function Chk_Date(chk_date) { # check validity of input dates split(chk_date,mdy,IDFD) mm = mdy[1] + 0 ; dd = mdy[2] + 0 ; yy = mdy[3] + 0 if ( mm == 2 ) Leap(yy) if ( yy < 1 ) { ERR = 3 ; exit } if ( mm < 1 || mm > 12 ) { ERR = 4 ; exit } if ( dd < 1 || dd > Mdays[mm] ) { ERR = 5 ; exit } } # day counting functions for next or previous year, month and day function Next_Y() { N -= Ydays ; Y += 1 ; M = 1 ; D = 1 ; mdays = 0 ; Leap(Y) } function Next_M() { if ( mdays != 0 ) N -= mdays ; else N -= Mdays[M] M += 1 ; D = 1 ; mdays = 0 } function Next_D() { N -= 1 ; D += 1 if ( D > Mdays[M] ) { M += 1 ; D = 1 } else if ( Y == 1752 && M == 9 && D == 2 ) D = 13 } function Prev_Y() { N -= Ydays ; Y -= 1 ; M = 12 ; D = 31 ; mdays = 0 ; Leap(Y) } function Prev_M() { if ( mdays != 0 ) N -= mdays ; else N -= Mdays[M] M -= 1 ; D = Mdays[M] ; mdays = 0 } function Prev_D() { N -= 1 ; D -= 1 ; if ( Y == 1752 && M == 9 && D == 13 ) D = 2 } function Get_J(get_m,get_d,get_y) { # get the Julian date for an input date get_m = get_m + 0 ; get_d = get_d + 0 ; get_y = get_y + 0 Leap(get_y) j = get_d for (i=1;i<get_m;i++) j = j + Mdays[i] return j } function Get_Y1() { # get the number of days to day 1 for the help screen if ( ! m ) { if ( mm ) { m = mm ; d = dd ; y = yy } else if ( M ) { m = M ; d = D ; y = Y } } if ( ! j ) Get_J() return Get_Num("01/01/0001",m,d,y,j) }