Edit File: tcp_alias
# Create an alias for a TCP session. # # The syntax is similar to the `alias' builtin. Aliases with a trailing # `=' are assigned, while those without are listed. # # The alias can be used to refer to the session, however any output # from the session will be shown using information for the base # session name. Likewise, any other reference to the session's file # descriptor will cause the original session name rather than the alias to # be used. # # It is an error to attempt to create an alias for a non-existent session. # The alias will be removed when the session is closed. # # An alias can be reused without the session having to be closed. # However, a base session name cannot be used as an alias. If this # becomes necessary, the base session should be renamed with tcp_rename # first. # # With no arguments, list aliases. # # With the option -d, delete the alias. No value is allowed in this case. # # With the option -q (quiet), just return status 1 on failure. This # does not apply to bad syntax, which is always reported. Bad syntax # includes deleting aliases when supplying a value. emulate -L zsh setopt extendedglob cbases local opt quiet base value alias delete arg match mbegin mend fd array integer stat index while getopts "qd" opt; do case $opt in (q) quiet=1 ;; (d) delete=1 ;; (*) return 1 ;; esac done (( OPTIND > 1 )) && shift $(( OPTIND - 1 )) if (( ! $# )); then if (( ${#tcp_aliases} )); then for fd value in ${(kv)tcp_aliases}; do for alias in ${=value}; do print -r - \ "${alias}: alias for session ${tcp_by_fd[$fd]:-unnamed fd $fd}" done done fi return 0 fi for arg in $*; do if [[ $arg = (#b)([^=]##)=(*) ]]; then if [[ -n $delete ]]; then print "$0: value given with deletion command." >&2 stat=1 continue fi alias=$match[1] base=$match[2] if [[ -z $base ]]; then # hmm, this is very nearly a syntax error... [[ -z $quiet ]] && print "$0: empty value for alias $alias" >&2 stat=1 continue fi if [[ ${+tcp_by_name} -eq 0 || -z ${tcp_by_name[$base]} ]]; then [[ -z $quiet ]] && print "$0: no base session \`$base' for alias" stat=1 continue fi if [[ -n ${tcp_by_name[$alias]} ]]; then # already exists, OK if this is an alias... fd=${tcp_by_name[$alias]} array=(${=tcp_aliases[$fd]}) if [[ -n ${array[(r)$alias]} ]]; then # yes, we're OK; delete the old alias. unset "tcp_by_name[$alias]" index=${array[(i)$alias]} array=(${array[1,index-1]} ${array[index+1,-1]}) if [[ -z "$array" ]]; then unset "tcp_aliases[$fd]" else tcp_aliases[$fd]="$array" fi else # oops if [[ -z $quiet ]]; then print "$0: \`$alias' is already a session name." >&2 fi stat=1 continue fi fi (( ! ${+tcp_aliases} )) && typeset -gA tcp_aliases fd=${tcp_by_name[$base]} if [[ -n ${tcp_aliases[$fd]} ]]; then tcp_aliases[$fd]+=" $alias" else tcp_aliases[$fd]=$alias fi tcp_by_name[$alias]=$fd if zmodload -i zsh/parameter; then if (( ${+functions[tcp_on_alias]} )); then tcp_on_alias $alias $fd fi fi else alias=$arg fd=${tcp_by_name[$alias]} if [[ -z $fd ]]; then print "$0: no such alias \`$alias'" >&2 stat=1 continue fi # OK if this is an alias... array=(${=tcp_aliases[$fd]}) if [[ -n ${array[(r)$alias]} ]]; then # yes, we're OK if [[ -n $delete ]]; then unset "tcp_by_name[$alias]" index=${array[(i)$alias]} array=(${array[1,index-1]} ${array[index+1,-1]}) if [[ -z "$array" ]]; then unset "tcp_aliases[$fd]" else tcp_aliases[$fd]="$array" fi if zmodload -i zsh/parameter; then if (( ${+functions[tcp_on_unalias]} )); then tcp_on_unalias $alias $fd fi fi else print -r - \ "${alias}: alias for session ${tcp_by_fd[$fd]:-unnamed fd $fd}" fi else # oops if [[ -z $quiet ]]; then print "$0: \`$alias' is a session name." >&2 fi stat=1 continue fi fi done return $stat
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