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Diffstat (limited to '.local/src/blesh/contrib/bash-preexec.bash')
| -rw-r--r-- | .local/src/blesh/contrib/bash-preexec.bash | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/.local/src/blesh/contrib/bash-preexec.bash b/.local/src/blesh/contrib/bash-preexec.bash new file mode 100644 index 0000000..668aabe --- /dev/null +++ b/.local/src/blesh/contrib/bash-preexec.bash @@ -0,0 +1,154 @@ +# ble/contrib/bash-preexec.bash (C) 2022, akinomyoga + +## @arr[in] precmd_functions +## @arr[in] preexec_functions +## The functions registered to these arrays are executed on PRECMD and +## PREEXEC hooks, respectively. +## +## @fn[in] precmd +## @fn[in] preexec +## If these functions are defined, they are executed on PRECMD and PREEXEC +## hooks, respectively, through "precmd_functions" and "preexec_functions". +## +## +## * Integration with bash-preexec.sh (https://github.com/rcaloras/bash-preexec) +## +## Although this script works without bash-preexec, it provides a better +## integration with bash-preexec when bash-preexec is loaded. The +## integration relies on the following public API of bash-preexec. +## +## @fn __bp_precmd_invoke_functions lastexit lastarg +## @fn __bp_preexec_invoke_functions lastexit lastarg this_command +## @fn __bp_uninstall +## @var __bp_trapdebug_string +## @var __bp_install_string + +function ble/contrib/bash-preexec/add-convenience-functions { + ble/array#remove precmd_functions precmd + ble/array#remove preexec_functions preexec + ble/array#unshift precmd_functions precmd + ble/array#unshift preexec_functions preexec +} + +function ble/contrib/bash-preexec/precmd.hook { + local __lastexit=$? __lastarg=$_ + + # Emulate bash-preexec variables + __bp_last_ret_value=$__lastexit + BP_PIPESTATUS=("${BLE_PIPESTATUS[@]}") + + # local __bp_blesh_invoking_through_blesh=1 # XXX + if ble/is-function __bp_precmd_invoke_functions; then + __bp_precmd_invoke_functions "$__lastexit" "$__lastarg" + else + # For older bash-preexec.sh / without bash-preexec.sh + local __hook + for __hook in "${precmd_functions[@]}"; do + if builtin type -t "$__hook" &>/dev/null; then + ble/util/setexit "$__lastexit" "$__lastarg" + "$__hook" + fi + done + fi +} + +function ble/contrib/bash-preexec/preexec.hook { + local __lastexit=$? __lastarg=$_ __this_command=$1 + __bp_last_argument_prev_command=$__lastarg + + # local __bp_blesh_invoking_through_blesh=1 # XXX + if ble/is-function __bp_preexec_invoke_functions; then + __bp_preexec_invoke_functions "$__lastexit" "$__lastarg" + else + # For older bash-preexec.sh / without bash-preexec.sh + local __hook + for __hook in "${preexec_functions[@]}"; do + if builtin type -t "$__hook" &>/dev/null; then + ble/util/setexit "$__lastexit" "$__lastarg" + "$__hook" "$__this_command" + fi + done + fi +} + +## @fn ble/contrib/bash-preexec/attach.hook +## Remove bash-preexec hooks +function ble/contrib/bash-preexec/attach.hook { + local BP_TRAPDEBUG_STRING=${__bp_trapdebug_string:-'__bp_preexec_invoke_exec "$_"'} + + # Remove bash-preexec preexec hook in builtin DEBUG trap. + local trap_string q="'" Q="'\''" + ble/util/assign trap_string 'builtin trap -p DEBUG' + if [[ $trap_string == "trap -- '${BP_TRAPDEBUG_STRING//$q/$Q}' DEBUG" ]]; then + if [[ ${__bp_trap_string-} ]]; then + builtin eval -- "builtin $__bp_trap_string" + else + builtin trap - DEBUG + fi + fi + + if ble/is-function __bp_uninstall; then + __bp_uninstall + else + # For older bash-preexec.sh + + local BP_INSTALL_STRING=${__bp_install_string:-$'__bp_trap_string="$(trap -p DEBUG)"\ntrap - DEBUG\n__bp_install'} + local BP_PROMPT_COMMAND_PREFIX=__bp_precmd_invoke_cmd + local BP_PROMPT_COMMAND_SUFFIX=__bp_interactive_mode + + # Remove __bp_install hook from PROMPT_COMMAND + if [[ ${PROMPT_COMMAND-} == *"$__bp_install_string"* ]]; then + PROMPT_COMMAND="${PROMPT_COMMAND//$BP_INSTALL_STRING[;$'\n']}" # Edge case of appending to PROMPT_COMMAND + PROMPT_COMMAND="${PROMPT_COMMAND//$BP_INSTALL_STRING}" + fi + + # Remove precmd hook from PROMPT_COMMAND + PROMPT_COMMAND=${PROMPT_COMMAND/#$BP_PROMPT_COMMAND_PREFIX$'\n'/$'\n'} + PROMPT_COMMAND=${PROMPT_COMMAND%$'\n'$BP_PROMPT_COMMAND_SUFFIX} + PROMPT_COMMAND=${PROMPT_COMMAND#$'\n'} + + # Remove preexec hook in the DEBUG trap + local q="'" Q="'\''" trap_string + ble/util/assign trap_string 'trap -p DEBUG' + if [[ $trap_string == "trap -- '${__bp_trapdebug_string//$q/$Q}' DEBUG" ]]; then + if [[ ${__bp_trap_string-} ]]; then + eval -- "$__bp_trap_string" + else + trap - DEBUG + fi + fi + fi +} + +## @fn ble/contrib/bash-preexec/detach.hook +function ble/contrib/bash-preexec/detach.hook { + # Reinstall bash-preexec hooks + local BP_INSTALL_STRING=${__bp_install_string-} + [[ ! $BP_INSTALL_STRING ]] && ble/is-function __bp_install && + BP_INSTALL_STRING=$'__bp_trap_string="$(trap -p DEBUG)"\ntrap - DEBUG\n__bp_install' + + builtin eval -- "$__bp_install_string" + + # Note: 重複して登録される (古い bash-preexec.sh) かもしれないし、全 + # く登録されない (bash-preexec.sh をロードしていない時) かもしれない + # ので、ble.sh 側で末尾で一回呼び出す形に修正する。 + ble/contrib/bash-preexec/add-convenience-functions +} + +ble/contrib/bash-preexec/add-convenience-functions +blehook PRECMD-+=ble/contrib/bash-preexec/precmd.hook +blehook PREEXEC-+=ble/contrib/bash-preexec/preexec.hook +blehook ATTACH-+=ble/contrib/bash-preexec/attach.hook +blehook DETACH-+=ble/contrib/bash-preexec/detach.hook +if [[ ${bp_imported-${__bp_imported-}} ]]; then + ble/contrib/bash-preexec/attach.hook +fi + +# XXX: 以下は uninstall で削除しきれなかった時の為の保険。今の所不要に思われる。 +# __bp_blesh_check() { +# if [[ $BLE_ATTACHED && ! ${__bp_blesh_invoking_through_blesh-} ]]; then +# ble/contrib/bash-preexec/attach.hook +# fi +# } +# precmd_function+=(__bp_blesh_check) +# preexec_function+=(__bp_blesh_check) |