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|
# Usage:
# tcp_close [-q] [ -a | session ... ]
# -a means all sessions.
# -n means don't close a fake session's fd.
# -q means quiet.
#
# Accepts the -s and -l arguments for consistenty with other functions,
# but there is no particular gain in using them
emulate -L zsh
setopt extendedglob cbases
local all quiet opt alias noclose
local -a sessnames
while getopts "aql:ns:" opt; do
case $opt in
(a) all=1
;;
(q) quiet=1
;;
(l) sessnames+=(${(s.,.)OPTARG})
;;
(n) noclose=1
;;
(s) sessnames+=($OPTARG)
;;
(*) return 1
;;
esac
done
(( OPTIND > 1 )) && shift $(( OPTIND - 1))
if [[ -n $all ]]; then
if (( $# )); then
print "Usage: $0 [ -q ] [ -a | [ session ... ] ]" >&2
return 1
fi
sessnames=(${(k)tcp_by_name})
if (( ! ${#sessnames} )); then
[[ -z $quiet ]] && print "No TCP sessions open." >&2
return 1
fi
fi
sessnames+=($*)
if (( ! ${#sessnames} )); then
sessnames+=($TCP_SESS)
fi
if (( ! ${#sessnames} )); then
[[ -z $quiet ]] && print "No current TCP session." >&2
return 1
fi
local tcp_sess fd
integer stat curstat
# Check to see if the fd is opened for a TCP session, or was opened
# to a pre-existing fd. We could remember this from tcp_open.
local -A ztcp_fds
local line match mbegin mend
if zmodload -e zsh/net/tcp; then
ztcp | while read line; do
if [[ $line = (#b)*fd\ ([0-9]##) ]]; then
ztcp_fds[$match[1]]=1
fi
done
fi
for tcp_sess in $sessnames; do
curstat=0
fd=${tcp_by_name[$tcp_sess]}
if [[ -z $fd ]]; then
print "No TCP session $tcp_sess!" >&2
stat=1
continue
fi
# We need the base name if this is an alias.
tcp_sess=${tcp_by_fd[$fd]}
if [[ -z $tcp_sess ]]; then
if [[ -z $quiet ]]; then
print "Aaargh! Session for fd $fd has disappeared!" >&2
fi
stat=1
continue
fi
if [[ ${+tcp_aliases} -ne 0 && -n ${tcp_aliases[$fd]} ]]; then
for alias in ${=tcp_aliases[$fd]}; do
if (( ${+functions[tcp_on_unalias]} )); then
tcp_on_unalias $alias $fd
fi
unset "tcp_by_name[$alias]"
done
unset "tcp_aliases[$fd]"
fi
# Don't return just because the zle handler couldn't be uninstalled...
if [[ -o zle ]]; then
zle -F $fd || print "[Ignoring...]" >&2
fi
if [[ -n $ztcp_fds[$fd] ]]; then
# It's a ztcp session.
if ! ztcp -c $fd; then
stat=1
curstat=1
fi
elif [[ -z $noclose ]]; then
# It's not, just close it normally.
# Careful: syntax for closing fd's is quite strict.
if [[ ${#fd} -gt 1 ]]; then
[[ -z $quiet ]] && print "Can't close fd $fd; will leave open." >&2
else
eval "exec $fd>&-"
fi
fi
unset "tcp_by_name[$tcp_sess]"
unset "tcp_by_fd[$fd]"
if [[ -z $quiet && $curstat -eq 0 ]]; then
print "Session $tcp_sess successfully closed."
fi
[[ $tcp_sess = $TCP_SESS ]] && unset TCP_SESS
if (( ${+functions[tcp_on_close]} )); then
tcp_on_close $tcp_sess $fd
fi
done
return $stat
|
