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| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | Functions/Misc/add-zsh-hook | 63 |
2 files changed, 66 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 61a06fd74..92e2820ba 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2007-04-19 Peter Stephenson <pws@csr.com> + * unposted: Functions/Misc/add-zsh-hook: should have been + added ages ago but wasn't. + * README, Config/version.mk, Etc/FAQ.yo: release 4.3.4. 2007-04-17 Wayne Davison <wayned@users.sourceforge.net> diff --git a/Functions/Misc/add-zsh-hook b/Functions/Misc/add-zsh-hook new file mode 100644 index 000000000..fa8015a3d --- /dev/null +++ b/Functions/Misc/add-zsh-hook @@ -0,0 +1,63 @@ +# Add to HOOK the given FUNCTION. +# HOOK is one of chpwd, precmd, preexec, periodic, zshexit (the +# _functions subscript is not required). +# +# With -d, remove the function from the hook instead; delete the hook +# variable if it is empty. +# +# Without -d, the FUNCTION is marked for autoload; -U is passed down to +# autoload if that is given. (This is harmless if the function is actually +# defined inline.) + +emulate -L zsh + +local -a hooktypes +hooktypes=(chpwd precmd preexec periodic zshexit) + +local opt +local -a autoopts +integer del + +while getopts "d" opt; do + case $opt in + (d) + del=1 + ;; + + (U) + autoopts+=(-$opt) + ;; + + (*) + return 1 + ;; + esac +done +shift $(( OPTIND - 1 )) + +if (( $# != 2 || ${hooktypes[(I)$1]} == 0 )); then + print "Usage: $0 hook function\nValid hooks are:\n $hooktypes" + return 1 +fi + +local hook="${1}_functions" +local fn="$2" + +if (( del )); then + # delete, if hook is set + if (( ${(P)+hook} )); then + set -A $hook ${(P)hook:#$fn} + # unset if no remaining entries --- this can give better + # performance in some cases + (( ${(P)#hook} )) || unset $hook + fi +else + if (( ${(P)+hook} )): then + if (( ${(P)hook[(I)$fn]} == 0 )); then + set -A $hook ${(P)hook} $fn + fi + else + set -A $hook $fn + fi + autoload $autoopts -- $fn +fi |