| Current Path : /usr/share/zsh/4.3.11/functions/ |
| Current File : //usr/share/zsh/4.3.11/functions/calendar |
emulate -L zsh
setopt extendedglob
local line showline restline REPLY REPLY2 userange nobackup datefmt
local calendar donefile sched newfile warnstr mywarnstr newdate
integer time start stop today ndays y m d next=-1 shown done nodone
integer verbose warntime mywarntime t tcalc tsched i rstat remaining
integer showcount icount repeating repeattime resched showall brief
local -a calendar_entries calendar_addlines
local -a times calopts showprog lockfiles match mbegin mend tmplines
local -A reply
zmodload -i zsh/datetime || return 1
zmodload -i zsh/zutil || return 1
autoload -Uz calendar_{add,parse,read,scandate,show,lockfiles}
# Read the calendar file from the calendar-file style
zstyle -s ':datetime:calendar:' calendar-file calendar || calendar=~/calendar
newfile=$calendar.new.$HOST.$$
zstyle -s ':datetime:calendar:' done-file donefile || donefile="$calendar.done"
# Read the programme to show the message from the show-prog style.
zstyle -a ':datetime:calendar:' show-prog showprog ||
showprog=(calendar_show)
# Amount of time before an event when it should be flagged.
# May be overridden in individual entries
zstyle -s ':datetime:calendar:' warn-time warnstr || warnstr="0:05"
# default to standard ctime date/time format
zstyle -s ':datetime:calendar:' date-format datefmt ||
datefmt="%a %b %d %H:%M:%S %Z %Y"
if [[ -n $warnstr ]]; then
if [[ $warnstr = <-> ]]; then
(( warntime = warnstr ))
elif ! calendar_scandate -ar $warnstr; then
print >&2 \
"warn-time value '$warnstr' not understood; using default 5 minutes"
warnstr="5 mins"
(( warntime = 5 * 60 ))
else
(( warntime = REPLY ))
fi
fi
[[ -f $calendar ]] || return 1
# We're not using getopts because we want +... to refer to a
# relative time, not an option, and allow some other additions
# like handling -<->.
integer opti=0
local opt optrest optarg
while [[ ${argv[opti+1]} = -* ]]; do
(( opti++ ))
opt=${argv[opti][2]}
optrest=${argv[opti][3,-1]}
[[ -z $opt || $opt = - ]] && break
while [[ -n $opt ]]; do
case $opt in
########################
# Options with arguments
########################
([BCnS])
if [[ -n $optrest ]]; then
optarg=$optrest
optrest=
elif (( opti < $# )); then
optarg=$argv[++opti]
optrest=
else
print -r "$0: option -$opt requires an argument." >&2
return 1
fi
case $opt in
(B)
# Brief, with number of lines to show.
brief=$optarg
if (( brief <= 0 )); then
print -r "$0: option -$opt requires a positive integer." >&2
return 1
fi
;;
(C)
# Pick the calendar file, overriding style and default.
calendar=$optarg
;;
(n)
# Show this many remaining events regardless of date.
showcount=$optarg
if (( showcount <= 0 )); then
print -r "$0: option -$opt requires a positive integer." >&2
return 1
fi
;;
(S)
# Explicitly specify a show programme, overriding style and default.
# Colons in the argument are turned into space.
showprog=(${(s.:.)optarg})
;;
esac
;;
###########################
# Options without arguments
###########################
(a)
# Show all entries
(( showall = 1 ))
;;
(b)
# Brief: don't show continuation lines
(( brief = 1 ))
;;
(d)
# Move out of date items to the done file.
(( done = 1 ))
;;
(D)
# Don't use done; needed with sched
(( nodone = 1 ))
;;
(r)
# Show all remaining options in the calendar, i.e.
# respect start time but ignore end time.
# Any argument is treated as a start time.
(( remaining = 1 ))
;;
(s)
# Use the "sched" builtin to scan at the appropriate time.
sched=sched
(( done = 1 ))
;;
(v)
# Verbose
verbose=1
;;
(<->)
# Shorthand for -n <->
showcount=$opt
;;
(*)
print "$0: unrecognised option: -$opt" >&2
return 1
;;
esac
opt=$optrest[1]
optrest=$optrest[2,-1]
done
done
calopts=($argv[1,opti])
shift $(( opti ))
# Use of donefile requires explicit or implicit option request, plus
# no explicit -D. It may already be empty because of the style.
(( done && !nodone )) || donefile=
if (( $# > 1 || ($# == 1 && remaining) )); then
if [[ $1 = now ]]; then
start=$EPOCHSECONDS
elif [[ $1 = <-> ]]; then
start=$1
else
if ! calendar_scandate -a $1; then
print "$0: failed to parse date/time: $1" >&2
return 1
fi
start=$REPLY
fi
shift
else
# Get the time at which today started.
y=${(%):-"%D{%Y}"} m=${(%):-"%D{%m}"} d=${(%):-"%D{%d}"}
strftime -s today -r "%Y/%m/%d" "$y/$m/$d"
start=$today
fi
# day of week of start time
strftime -s wd "%u" $start
if (( $# && !remaining )); then
if [[ $1 = +* ]]; then
if ! calendar_scandate -a -R $start ${1[2,-1]}; then
print "$0: failed to parse relative time: $1" >&2
return 1
fi
(( stop = REPLY ))
elif [[ $1 = <-> ]]; then
stop=$1
else
if ! calendar_scandate -a $1; then
print "$0: failed to parse date/time: $1" >&2
return 1
fi
stop=$REPLY
fi
if (( stop < start )); then
strftime -s REPLY $datefmt $start
strftime -s REPLY2 $datefmt $stop
print "$0: requested end time is before start time:
start: $REPLY
end: $REPLY2" >&2
return 1
fi
shift
else
# By default, show 2 days. If it's Friday (5) show up to end
# of Monday (4) days; likewise on Saturday show 3 days.
# If -r, this is calculated but not used. This is paranoia,
# to avoid an unusable value of stop; but it shouldn't get used.
case $wd in
(5)
ndays=4
;;
(6)
ndays=3
;;
(*)
ndays=2
;;
esac
stop=$(( start + ndays * 24 * 60 * 60 ))
fi
if (( $# )); then
print "Usage: $0 [ start-date-time stop-date-time ]" >&2
return 1
fi
autoload -Uz matchdate
[[ -n $donefile ]] && rm -f $newfile
if (( verbose )); then
print -n "start: "
strftime $datefmt $start
print -n "stop: "
if (( remaining )); then
print "none"
else
strftime $datefmt $stop
fi
fi
local mycmds="${TMPPREFIX:-/tmp/zsh}.calendar_cmds.$$"
touch $mycmds
chmod 600 $mycmds
# start of subshell for OS file locking
(
# start of block for following always to clear up lockfiles.
# Not needed but harmless if OS file locking is used.
{
if [[ -n $donefile ]]; then
# Attempt to lock both $donefile and $calendar.
# Don't lock $newfile; we've tried our best to make
# the name unique.
if zmodload -F zsh/system b:zsystem && zsystem supports flock &&
zsystem flock $calendar 2>/dev/null &&
zsystem flock $donefile 2>/dev/null; then
# locked OK
:
else
calendar_lockfiles $calendar $donefile || exit 1
fi
fi
calendar_read $calendar
for line in $calendar_entries; do
calendar_parse $line || continue
# Extract returned parameters from $reply
# Time of event
(( t = ${reply[time]} ))
# Remainder of line including RPT and WARN stuff: we need
# to keep these for rescheduling.
restline=$reply[text1]
# Look for specific warn time.
if [[ -n ${reply[warntime]} ]]; then
(( mywarntime = t - ${reply[warntime]} ))
mywarnstr=${reply[warnstr]}
else
(( mywarntime = warntime ))
mywarnstr=$warnstr
fi
# Look for a repeat time.
if [[ -n ${reply[rpttime]} ]]; then
# The actual time of the next event, which appears as text
(( repeattime = ${reply[rpttime]} ))
(( repeating = 1 ))
else
(( repeating = 0 ))
fi
# Finished extracting parameters from $reply
if (( verbose )); then
print "Examining: $line"
print -n " Date/time: "
strftime $datefmt $t
if [[ -n $sched ]]; then
print " Warning $mywarntime seconds ($mywarnstr) before"
fi
fi
(( shown = 0 ))
if (( brief )); then
tmplines=("${(f)line}")
showline=${(F)${${tmplines[1,brief]}}}
else
showline=$line
fi
match=()
# Strip continuation lines starting " #".
while [[ $showline = (#b)(*$'\n')[[:space:]]##\#[^$'\n']##(|$'\n'(*)) ]]; do
showline="$match[1]$match[3]"
done
# Strip trailing empty lines
showline=${showline%%[[:space:]]#}
if (( showall || (t >= start && (remaining || t <= stop || icount < showcount)) ))
then
print -r -- ${(qq)showprog} $start $stop ${(qq)showline} >>$mycmds
(( icount++ ))
# Doesn't count as "shown" unless the event has now passed.
(( t <= EPOCHSECONDS )) && (( shown = 1 ))
elif [[ -n $sched ]]; then
(( tsched = t - mywarntime ))
if (( tsched >= start && tsched <= stop)); then
showline="due in ${mywarnstr}: $showline"
print -r -- ${(qq)showprog} $start $stop ${(qq)showline} >>$mycmds
elif (( tsched < start )); then
# We haven't actually shown it, but it's in the past,
# so treat it the same. Should probably rename this variable.
(( shown = 1 ))
fi
fi
if [[ -n $sched ]]; then
if (( shown && repeating )); then
# Done and dusted, but a repeated event is due.
strftime -s newdate $datefmt $repeattime
if [[ $newdate != *[[:space:]] && $restline != [[:space:]]* ]]; then
newdate+=" "
fi
calendar_addlines+=("$newdate$restline")
# We'll add this back in below, but we check in case the
# repeated event is the next one due. It's not
# actually a disaster if there's an error and we fail
# to add the time. Always try to reschedule this event.
(( tcalc = repeattime, resched = 1 ))
else
(( tcalc = t ))
fi
if (( tcalc - mywarntime > EPOCHSECONDS )); then
# schedule for a warning
(( tsched = tcalc - mywarntime, resched = 1 ))
else
# schedule for event itself
(( tsched = tcalc ))
# but don't schedule unless the event has not yet been shown.
(( !shown )) && (( resched = 1 ))
fi
if (( resched && (next < 0 || tsched < next) )); then
(( next = tsched ))
fi
fi
if [[ -n $donefile ]]; then
if (( shown )); then
# Done and dusted.
if ! print -r $line >>$donefile; then
if (( done != 3 )); then
(( done = 3 ))
print "Failed to append to $donefile" >&2
fi
elif (( done != 3 )); then
(( done = 2 ))
fi
else
# Still not over.
if ! print -r $line >>$newfile; then
if (( done != 3 )); then
(( done = 3 ))
print "Failed to append to $newfile" >&2
fi
elif (( done != 3 )); then
(( done = 2 ))
fi
fi
fi
done
if [[ -n $sched ]]; then
if [[ $next -ge 0 ]]; then
# Remove any existing calendar scheduling.
i=${"${(@)zsh_scheduled_events#*:*:}"[(I)calendar -s*]}
{
(( i )) && print sched -$i
print -r -- ${(qq)sched} $next calendar "${calopts[@]}" $next $next
} >>$mycmds
else
showline="No more calendar events: calendar not rescheduled.
Run \"calendar -s\" again if you add to it."
print -r -- ${(qq)showprog} $start $stop ${(qq)showline} >>$mycmds
fi
fi
if (( done == 2 )); then
if ! mv $calendar $calendar.old; then
print "Couldn't back up $calendar to $calendar.old.
New calendar left in $newfile." >&2
(( rstat = 1 ))
elif ! mv $newfile $calendar; then
print "Failed to rename $newfile to $calendar.
Old calendar left in $calendar.old." >&2
(( rstat = 1 ))
fi
nobackup=-B
elif [[ -n $donefile ]]; then
rm -f $newfile
fi
# Reschedule repeating events.
for line in $calendar_addlines; do
calendar_add -L $nobackup $line
done
} always {
(( ${#lockfiles} )) && rm -f $lockfiles
}
exit $rstat
) && {
# Tasks that need to be in the current shell
[[ -s $mycmds ]] && . $mycmds
rm -f $mycmds
}
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