/usr/share/gnudatalanguage/lib/calendar.pro is in libgnudatalanguage0 0.9.7-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | ; by Sylwester Arabas <slayoo (at) igf.fuw.edu.pl>
; depends on the UNIX 'cal' utility
;
pro CALENDAR, p1, p2, test=test
;
ON_ERROR, 2
;
;; sanity checks
msg = ' must not be undefined, zero-valued nor multi-element value'
msg_y = 'valid year range is 1 ... 9999'
msg_m = 'valid month range is 1 ... 12'
m_range = [1,12]
y_range = [1,9999]
if N_PARAMS() eq 1 then begin
p1=FLOOR(p1)
if ~KEYWORD_SET(p1) || N_ELEMENTS(p1) ne 1 then $
MESSAGE, 'first argument' + msg
if p1 lt y_range[0] || p1 gt y_range[1] then MESSAGE, msg_y
endif
if N_PARAMS() eq 2 then begin
p2=FLOOR(p2)
if ~KEYWORD_SET(p2) || N_ELEMENTS(p2) ne 1 then $
MESSAGE, 'second argument' + msg
if p1 lt m_range[0] || p1 gt m_range[1] then MESSAGE, msg_m
if p2 lt y_range[0] || p2 gt y_range[1] then MESSAGE, msg_y
endif
;; acquireing the calendar from cal
cmd = 'LC_ALL=C cal'
chrsz = 3
if N_PARAMS() eq 1 then begin
cmd += ' ' + STRING(p1)
chrsz = 1
endif else if N_PARAMS() eq 2 then begin
cmd += ' ' + STRING(p1) + ' ' + STRING(p2)
endif
spawn, cmd, text, exit_status=status, err
if status ne 0 then MESSAGE, 'failed to execute cal'
;
;; finding the length of the longest line
maxlen = 0.
for line = 0, N_ELEMENTS(text) - 1 do $
maxlen = max([maxlen, STRLEN(text[line])])
;; setting up the plot space
x_rng = [-0.05,1.05] * maxlen
y_rng = [1,-.1] * N_ELEMENTS(text)
PLOT, [0], [0], xrange=x_rng, yrange=y_rng, /nodata, $
xmargin=[1,1], ymargin=[1,1], xstyle=5, ystyle=5
;; drawing a frame
PLOTS, $
[x_rng[0], x_rng[0], x_rng[1], x_rng[1], x_rng[0]], $
[y_rng[0], y_rng[1], y_rng[1], y_rng[0], y_rng[0]]
;; plotting the output from cal
for line = 0, N_ELEMENTS(text) - 1 do $
for char = 0, STRLEN(text[line]) do $
XYOUTS, char, line, STRMID(text[line], char, 1), chars=chrsz
;
if KEYWORD_SET(test) then STOP
;
end
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