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util.sh
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util.sh
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# -*- mode: sh; mode: sh-bash -*-
# bash script to be sourced from interactive shell
#------------------------------------------------------------------------------
# ble.sh options
function bleopt/.read-arguments/process-option {
local name=$1
case $name in
(help)
flags=H$flags ;;
(color|color=always)
flags=c${flags//[cn]} ;;
(color=never)
flags=n${flags//[cn]} ;;
(color=auto)
flags=${flags//[cn]} ;;
(color=*)
ble/util/print "bleopt: '${name#*=}': unrecognized option argument for '--color'." >&2
flags=E$flags ;;
(reset) flags=r$flags ;;
(changed) flags=u$flags ;;
(initialize) flags=I$flags ;;
(*)
ble/util/print "bleopt: unrecognized long option '--$name'." >&2
flags=E$flags ;;
esac
}
## @fn bleopt/expand-variable-pattern pattern opts
## @var[out] ret
function bleopt/expand-variable-pattern {
ret=()
local pattern=$1
if [[ $pattern == *@* ]]; then
builtin eval -- "ret=(\"\${!${pattern%%@*}@}\")"
ble/array#filter-by-glob ret "${pattern//@/?*}"
elif [[ ${!pattern+set} || :$opts: == :allow-undefined: ]]; then
ret=("$pattern")
fi
((${#ret[@]}))
}
## @fn bleopt/.read-arguments
## @var[out] flags
## H --help
## c --color=always
## n --color=never
## r --reset
## u --changed
## I --initialize
## @var[out] pvars
## @var[out] specs
function bleopt/.read-arguments {
flags= pvars=() specs=()
while (($#)); do
local arg=$1; shift
case $arg in
(--)
ble/array#push specs "$@"
break ;;
(-)
ble/util/print "bleopt: unrecognized argument '$arg'." >&2
flags=E$flags ;;
(--*)
bleopt/.read-arguments/process-option "${arg:2}" ;;
(-*)
local i c
for ((i=1;i<${#arg};i++)); do
c=${arg:i:1}
case $c in
(r) bleopt/.read-arguments/process-option reset ;;
(u) bleopt/.read-arguments/process-option changed ;;
(I) bleopt/.read-arguments/process-option initialize ;;
(*)
ble/util/print "bleopt: unrecognized option '-$c'." >&2
flags=E$flags ;;
esac
done ;;
(*)
if local rex='^([_a-zA-Z0-9@]+)(:?=|$)(.*)'; [[ $arg =~ $rex ]]; then
local name=${BASH_REMATCH[1]#bleopt_}
local var=bleopt_$name
local op=${BASH_REMATCH[2]}
local value=${BASH_REMATCH[3]}
# check/expand variable names
if [[ $op == ':=' ]]; then
if [[ $var == *@* ]]; then
ble/util/print "bleopt: \`${var#bleopt_}': wildcard cannot be used in the definition." >&2
flags=E$flags
continue
fi
else
local ret; bleopt/expand-variable-pattern "$var"
# obsolete な物は除外
var=()
local v i=0
for v in "${ret[@]}"; do
ble/is-function "bleopt/obsolete:${v#bleopt_}" && continue
var[i++]=$v
done
# 表示目的で obsolete しかない時は obsolete でも表示
[[ ${#var[@]} == 0 ]] && var=("${ret[@]}")
# 適した物が見つからない場合は失敗
if ((${#var[@]}==0)); then
ble/util/print "bleopt: option \`$name' not found" >&2
flags=E$flags
continue
fi
fi
if [[ $op ]]; then
var=("${var[@]}") # #D1570: WA bash-3.0 ${scal[@]/x} bug
if ((_ble_bash>=40300)) && ! shopt -q compat42; then
ble/array#push specs "${var[@]/%/"=$value"}" # WA #D1570 #D1751 checked
else
ble/array#push specs "${var[@]/%/=$value}" # WA #D1570 #D1738 checked
fi
else
ble/array#push pvars "${var[@]}"
fi
else
ble/util/print "bleopt: unrecognized argument '$arg'" >&2
flags=E$flags
fi ;;
esac
done
}
function bleopt/changed.predicate {
local cur=$1 def=_ble_opt_def_${1#bleopt_}
[[ ! ${!def+set} || ${!cur} != "${!def}" ]]
}
## @fn bleopt args...
## @params[in] args
## args は以下の内の何れかの形式を持つ。
##
## var=value
## 既存の設定変数に値を設定する。
## 設定変数が存在しないときはエラー。
## var:=value
## 設定変数に値を設定する。
## 設定変数が存在しないときは新しく作成する。
## var
## 変数の設定内容を表示する
##
function bleopt {
local flags pvars specs
bleopt/.read-arguments "$@"
if [[ $flags == *E* ]]; then
return 2
elif [[ $flags == *H* ]]; then
ble/util/print-lines \
'usage: bleopt [OPTION] [NAME|NAME=VALUE|NAME:=VALUE]...' \
' Set ble.sh options. Without arguments, this prints all the settings.' \
'' \
' Options' \
' --help Print this help.' \
' -r, --reset Reset options to the default values' \
' -I, --initialize Re-initialize settings' \
' -u, --changed Only select changed options' \
' --color[=always|never|auto]' \
' Change color settings.' \
'' \
' Arguments' \
' NAME Print the value of the option.' \
' NAME=VALUE Set the value to the option.' \
' NAME:=VALUE Set or create the value to the option.' \
'' \
' NAME can contain "@" as a wildcard.' \
''
return 0
fi
if ((${#pvars[@]}==0&&${#specs[@]}==0)); then
local var ip=0
for var in "${!bleopt_@}"; do
ble/is-function "bleopt/obsolete:${var#bleopt_}" && continue
pvars[ip++]=$var
done
fi
[[ $flags == *u* ]] &&
ble/array#filter pvars bleopt/changed.predicate
# --reset: pvars を全て既定値の設定に読み替える
if [[ $flags == *r* ]]; then
local var
for var in "${pvars[@]}"; do
local name=${var#bleopt_}
ble/is-function bleopt/obsolete:"$name" && continue
local def=_ble_opt_def_$name
[[ ${!def+set} && ${!var-} != "${!def}" ]] &&
ble/array#push specs "$var=${!def}"
done
pvars=()
elif [[ $flags == *I* ]]; then
local var
for var in "${pvars[@]}"; do
bleopt/reinitialize "${var#bleopt_}"
done
pvars=()
fi
if ((${#specs[@]})); then
local spec
for spec in "${specs[@]}"; do
local var=${spec%%=*} value=${spec#*=}
[[ ${!var+set} && ${!var} == "$value" ]] && continue
if ble/is-function bleopt/check:"${var#bleopt_}"; then
local bleopt_source=${BASH_SOURCE[1]}
local bleopt_lineno=${BASH_LINENO[0]}
if ! bleopt/check:"${var#bleopt_}"; then
flags=E$flags
continue
fi
fi
builtin eval -- "$var=\"\$value\""
done
fi
if ((${#pvars[@]})); then
# 着色
local sgr0= sgr1= sgr2= sgr3=
if [[ $flags == *c* || $flags != *n* && -t 1 ]]; then
local ret
ble/color/face2sgr command_function; sgr1=$ret
ble/color/face2sgr syntax_varname; sgr2=$ret
ble/color/face2sgr syntax_quoted; sgr3=$ret
sgr0=$_ble_term_sgr0
fi
local var
for var in "${pvars[@]}"; do
local ret
ble/string#quote-word "${!var}" sgrq="$sgr3":sgr0="$sgr0"
ble/util/print "${sgr1}bleopt$sgr0 ${sgr2}${var#bleopt_}$sgr0=$ret"
done
fi
[[ $flags != *E* ]]
}
function bleopt/declare/.check-renamed-option {
var=bleopt_$2
local sgr0= sgr1= sgr2= sgr3=
if [[ -t 2 ]]; then
sgr0=$_ble_term_sgr0
sgr1=${_ble_term_setaf[2]}
sgr2=${_ble_term_setaf[1]}$_ble_term_bold
sgr3=${_ble_term_setaf[4]}$_ble_term_bold
fi
local locate=$sgr1${BASH_SOURCE[3]-'(stdin)'}:${BASH_LINENO[2]}$sgr0
ble/util/print "$locate (bleopt): The option '$sgr2$1$sgr0' has been renamed. Please use '$sgr3$2$sgr0' instead." >&2
if ble/is-function bleopt/check:"$2"; then
bleopt/check:"$2"
return "$?"
fi
return 0
}
function bleopt/declare {
local type=$1 name=bleopt_$2 default_value=$3
# local set=${!name+set} value=${!name-}
case $type in
(-o)
builtin eval -- "$name='[obsolete: renamed to $3]'"
builtin eval -- "function bleopt/check:$2 { bleopt/declare/.check-renamed-option $2 $3; }"
builtin eval -- "function bleopt/obsolete:$2 { :; }" ;;
(-n)
builtin eval -- "_ble_opt_def_$2=\$3"
builtin eval -- ": \"\${$name:=\$default_value}\"" ;;
(*)
builtin eval -- "_ble_opt_def_$2=\$3"
builtin eval -- ": \"\${$name=\$default_value}\"" ;;
esac
return 0
}
function bleopt/reinitialize {
local name=$1
local defname=_ble_opt_def_$name
local varname=bleopt_$name
[[ ${!defname+set} ]] || return 1
[[ ${!varname} == "${!defname}" ]] && return 0
ble/is-function bleopt/obsolete:"$name" && return 0
ble/is-function bleopt/check:"$name" || return 0
# 一旦値を既定値に戻して改めてチェックを行う。
local value=${!varname}
builtin eval -- "$varname=\$$defname"
bleopt/check:"$name" &&
builtin eval "$varname=\$value"
}
## @bleopt input_encoding
bleopt/declare -n input_encoding UTF-8
function bleopt/check:input_encoding {
if ! ble/is-function "ble/encoding:$value/decode"; then
ble/util/print "bleopt: Invalid value input_encoding='$value'." \
"A function 'ble/encoding:$value/decode' is not defined." >&2
return 1
elif ! ble/is-function "ble/encoding:$value/b2c"; then
ble/util/print "bleopt: Invalid value input_encoding='$value'." \
"A function 'ble/encoding:$value/b2c' is not defined." >&2
return 1
elif ! ble/is-function "ble/encoding:$value/c2bc"; then
ble/util/print "bleopt: Invalid value input_encoding='$value'." \
"A function 'ble/encoding:$value/c2bc' is not defined." >&2
return 1
elif ! ble/is-function "ble/encoding:$value/generate-binder"; then
ble/util/print "bleopt: Invalid value input_encoding='$value'." \
"A function 'ble/encoding:$value/generate-binder' is not defined." >&2
return 1
elif ! ble/is-function "ble/encoding:$value/is-intermediate"; then
ble/util/print "bleopt: Invalid value input_encoding='$value'." \
"A function 'ble/encoding:$value/is-intermediate' is not defined." >&2
return 1
fi
# Note: ble/encoding:$value/clear は optional な設定である。
if [[ $bleopt_input_encoding != "$value" ]]; then
local bleopt_input_encoding=$value
ble/decode/rebind
fi
return 0
}
## @bleopt internal_stackdump_enabled
## エラーが起こった時に関数呼出の構造を標準エラー出力に出力するかどうかを制御する。
## 算術式評価によって非零の値になる場合にエラーを出力する。
## それ以外の場合にはエラーを出力しない。
bleopt/declare -v internal_stackdump_enabled 0
## @bleopt openat_base
## bash-4.1 未満で exec {var}>foo が使えない時に ble.sh で内部的に fd を割り当てる。
## この時の fd の base を指定する。bleopt_openat_base, bleopt_openat_base+1, ...
## という具合に順番に使用される。既定値は 30 である。
bleopt/declare -n openat_base 30
## @bleopt pager
bleopt/declare -v pager ''
## @bleopt editor
bleopt/declare -v editor ''
shopt -s checkwinsize
#------------------------------------------------------------------------------
# util
function ble/util/setexit { return "$1"; }
## @var _ble_util_upvar_setup
## @var _ble_util_upvar
##
## これらの変数は関数を定義する時に [-v varname] の引数を認識させ、
## 関数の結果を格納する変数名を外部から指定できるようにするのに用いる。
## 使用する際は関数を以下の様に記述する。既定の格納先変数は ret となる。
##
## function MyFunction {
## eval "$_ble_util_upvar_setup"
##
## ret=... # 処理を行い、変数 ret に結果を格納するコード
## # (途中で return などすると正しく動かない事に注意)
##
## eval "$_ble_util_upvar"
## }
##
## 既定の格納先変数を別の名前 (以下の例では arg) にする場合は次の様にする。
##
## function MyFunction {
## eval "${_ble_util_upvar_setup//ret/arg}"
##
## arg=... # 処理を行い、変数 arg に結果を格納するコード
##
## eval "${_ble_util_upvar//ret/arg}"
## }
##
_ble_util_upvar_setup='local var=ret ret; [[ $1 == -v ]] && var=$2 && shift 2'
_ble_util_upvar='local "${var%%\[*\]}" && ble/util/upvar "$var" "$ret"'
if ((_ble_bash>=50000)); then
function ble/util/unlocal {
if shopt -q localvar_unset; then
shopt -u localvar_unset
builtin unset -v "$@"
shopt -s localvar_unset
else
builtin unset -v "$@"
fi
}
function ble/util/upvar { ble/util/unlocal "${1%%\[*\]}" && builtin eval "$1=\"\$2\""; }
function ble/util/uparr { ble/util/unlocal "$1" && builtin eval "$1=(\"\${@:2}\")"; }
else
function ble/util/unlocal { builtin unset -v "$@"; }
function ble/util/upvar { builtin unset -v "${1%%\[*\]}" && builtin eval "$1=\"\$2\""; }
function ble/util/uparr { builtin unset -v "$1" && builtin eval "$1=(\"\${@:2}\")"; }
fi
function ble/util/save-vars {
local __name __prefix=$1; shift
for __name; do
if ble/is-array "$__name"; then
builtin eval "$__prefix$__name=(\"\${$__name[@]}\")"
else
builtin eval "$__prefix$__name=\"\$$__name\""
fi
done
}
function ble/util/restore-vars {
local __name __prefix=$1; shift
for __name; do
if ble/is-array "$__prefix$__name"; then
builtin eval "$__name=(\"\${$__prefix$__name[@]}\")"
else
builtin eval "$__name=\"\$$__prefix$__name\""
fi
done
}
#
# variable, array and strings
#
## @fn ble/variable#get-attr varname
## 指定した変数の属性を取得します。
## @var[out] attr
if ((_ble_bash>=40400)); then
function ble/variable#get-attr { attr=${!1@a}; }
function ble/variable#has-attr { [[ ${!1@a} == *["$2"]* ]]; }
else
function ble/variable#get-attr {
attr=
local __ble_tmp=$1
ble/util/assign __ble_tmp 'declare -p "$__ble_tmp" 2>/dev/null'
local rex='^declare -([a-zA-Z]*)'
[[ $__ble_tmp =~ $rex ]] && attr=${BASH_REMATCH[1]}
return 0
}
function ble/variable#has-attr {
local __ble_tmp=$1
ble/util/assign __ble_tmp 'declare -p "$__ble_tmp" 2>/dev/null'
local rex='^declare -([a-zA-Z]*)'
[[ $__ble_tmp =~ $rex && ${BASH_REMATCH[1]} == *["$2"]* ]]
}
fi
function ble/is-inttype { ble/variable#has-attr "$1" i; }
function ble/is-readonly { ble/variable#has-attr "$1" r; }
function ble/is-transformed { ble/variable#has-attr "$1" luc; }
function ble/variable#is-global/.test { ! local "$1" 2>/dev/null; }
function ble/variable#is-global {
(readonly "$1"; ble/variable#is-global/.test "$1")
}
function ble/variable#copy-state {
local src=$1 dst=$2
if [[ ${!src+set} ]]; then
builtin eval -- "$dst=\${$src}"
else
builtin unset -v "$dst[0]" 2>/dev/null || builtin unset -v "$dst"
fi
}
_ble_array_prototype=()
function ble/array#reserve-prototype {
local n=$1 i
for ((i=${#_ble_array_prototype[@]};i<n;i++)); do
_ble_array_prototype[i]=
done
}
## @fn ble/is-array arr
##
## Note: これに関しては様々な実現方法が考えられるが大体余りうまく動かない。
##
## * ! declare +a arr だと現在の関数のローカル変数の判定になってしまう。
## * bash-4.2 以降では ! declare -g +a arr を使えるが、
## これだと呼び出し元の関数で定義されている配列が見えない。
## というか現在のスコープの配列も見えない。
## * 今の所は compgen -A arrayvar を用いているが、
## この方法だと bash-4.3 以降では連想配列も配列と判定され、
## bash-4.2 以下では連想配列は配列とはならない。
if ((_ble_bash>=40400)); then
function ble/is-array { [[ ${!1@a} == *a* ]]; }
function ble/is-assoc { [[ ${!1@a} == *A* ]]; }
else
function ble/is-array {
local "decl$1"
ble/util/assign "decl$1" "declare -p $1" 2>/dev/null || return 1
local rex='^declare -[b-zA-Z]*a'
builtin eval "[[ \$decl$1 =~ \$rex ]]"
}
function ble/is-assoc {
local "decl$1"
ble/util/assign "decl$1" "declare -p $1" 2>/dev/null || return 1
local rex='^declare -[a-zB-Z]*A'
builtin eval "[[ \$decl$1 =~ \$rex ]]"
}
((_ble_bash>=40000)) ||
function ble/is-assoc { false; }
fi
## @fn ble/array#set arr value...
## 配列に値を設定します。
## Bash 4.4 で arr2=("${arr1[@]}") が遅い問題を回避する為の関数です。
function ble/array#set { builtin eval "$1=(\"\${@:2}\")"; }
## @fn ble/array#push arr value...
if ((_ble_bash>=40000)); then
function ble/array#push {
builtin eval "$1+=(\"\${@:2}\")"
}
elif ((_ble_bash>=30100)); then
function ble/array#push {
# Note (workaround Bash 3.1/3.2 bug): #D1198
# 何故か a=("${@:2}") は IFS に特別な物が設定されていると
# "${*:2}" と同じ振る舞いになってしまう。
IFS=$_ble_term_IFS builtin eval "$1+=(\"\${@:2}\")"
}
else
function ble/array#push {
while (($#>=2)); do
builtin eval -- "$1[\${#$1[@]}]=\"\$2\""
set -- "$1" "${@:3}"
done
}
fi
## @fn ble/array#pop arr
## @var[out] ret
function ble/array#pop {
builtin eval "local i$1=\$((\${#$1[@]}-1))"
if ((i$1>=0)); then
builtin eval "ret=\${$1[i$1]}"
builtin unset -v "$1[i$1]"
return 0
else
ret=
return 1
fi
}
## @fn ble/array#unshift arr value...
function ble/array#unshift {
builtin eval -- "$1=(\"\${@:2}\" \"\${$1[@]}\")"
}
## @fn ble/array#shift arr count
function ble/array#shift {
# Note: Bash 4.3 以下では ${arr[@]:${2:-1}} が offset='${2'
# length='-1' に解釈されるので、先に算術式展開させる。
builtin eval -- "$1=(\"\${$1[@]:$((${2:-1}))}\")"
}
## @fn ble/array#reverse arr
function ble/array#reverse {
builtin eval "
set -- \"\${$1[@]}\"; $1=()
local e$1 i$1=\$#
for e$1; do $1[--i$1]=\"\$e$1\"; done"
}
## @fn ble/array#insert-at arr index elements...
function ble/array#insert-at {
builtin eval "$1=(\"\${$1[@]::$2}\" \"\${@:3}\" \"\${$1[@]:$2}\")"
}
## @fn ble/array#insert-after arr needle elements...
function ble/array#insert-after {
local _ble_local_script='
local iARR=0 eARR aARR=
for eARR in "${ARR[@]}"; do
((iARR++))
[[ $eARR == "$2" ]] && aARR=iARR && break
done
[[ $aARR ]] && ble/array#insert-at "$1" "$aARR" "${@:3}"
'; builtin eval -- "${_ble_local_script//ARR/$1}"
}
## @fn ble/array#insert-before arr needle elements...
function ble/array#insert-before {
local _ble_local_script='
local iARR=0 eARR aARR=
for eARR in "${ARR[@]}"; do
[[ $eARR == "$2" ]] && aARR=iARR && break
((iARR++))
done
[[ $aARR ]] && ble/array#insert-at "$1" "$aARR" "${@:3}"
'; builtin eval -- "${_ble_local_script//ARR/$1}"
}
## @fn ble/array#filter arr predicate
function ble/array#filter {
local _ble_local_script='
local -a aARR=() eARR
for eARR in "${ARR[@]}"; do
"$2" "$eARR" && ble/array#push "aARR" "$eARR"
done
ARR=("${aARR[@]}")
'; builtin eval -- "${_ble_local_script//ARR/$1}"
}
function ble/array#filter/not.predicate { ! "$_ble_local_pred" "$1"; }
function ble/array#remove-if {
local _ble_local_pred=$2
ble/array#filter "$1" ble/array#filter/not.predicate
}
## @fn ble/array#filter-by-regex arr regex
function ble/array#filter/regex.predicate { [[ $1 =~ $_ble_local_rex ]]; }
function ble/array#filter-by-regex {
local _ble_local_rex=$2
local LC_ALL= LC_COLLATE=C 2>/dev/null
ble/array#filter "$1" ble/array#filter/regex.predicate
ble/util/unlocal LC_COLLATE LC_ALL 2>/dev/null
}
function ble/array#remove-by-regex {
local _ble_local_rex=$2
local LC_ALL= LC_COLLATE=C 2>/dev/null
ble/array#remove-if "$1" ble/array#filter/regex.predicate
ble/util/unlocal LC_COLLATE LC_ALL 2>/dev/null
}
function ble/array#filter/glob.predicate { [[ $1 == $_ble_local_glob ]]; }
function ble/array#filter-by-glob {
local _ble_local_glob=$2
local LC_ALL= LC_COLLATE=C 2>/dev/null
ble/array#filter "$1" ble/array#filter/glob.predicate
ble/util/unlocal LC_COLLATE LC_ALL 2>/dev/null
}
function ble/array#remove-by-glob {
local _ble_local_glob=$2
local LC_ALL= LC_COLLATE=C 2>/dev/null
ble/array#remove-if "$1" ble/array#filter/glob.predicate
ble/util/unlocal LC_COLLATE LC_ALL 2>/dev/null
}
## @fn ble/array#remove arr element
function ble/array#remove/.predicate { [[ $1 != "$_ble_local_value" ]]; }
function ble/array#remove {
local _ble_local_value=$2
ble/array#filter "$1" ble/array#remove/.predicate
}
## @fn ble/array#index arr needle
## @var[out] ret
function ble/array#index {
local _ble_local_script='
local eARR iARR=0
for eARR in "${ARR[@]}"; do
if [[ $eARR == "$2" ]]; then ret=$iARR; return 0; fi
((++iARR))
done
ret=-1; return 1
'; builtin eval -- "${_ble_local_script//ARR/$1}"
}
## @fn ble/array#last-index arr needle
## @var[out] ret
function ble/array#last-index {
local _ble_local_script='
local eARR iARR=${#ARR[@]}
while ((iARR--)); do
[[ ${ARR[iARR]} == "$2" ]] && { ret=$iARR; return 0; }
done
ret=-1; return 1
'; builtin eval -- "${_ble_local_script//ARR/$1}"
}
## @fn ble/array#remove-at arr index
function ble/array#remove-at {
local _ble_local_script='
builtin unset -v "ARR[$2]"
ARR=("${ARR[@]}")
'; builtin eval -- "${_ble_local_script//ARR/$1}"
}
function ble/array#fill-range {
ble/array#reserve-prototype "$(($3-$2))"
local _ble_script='
local -a sARR; sARR=("${_ble_array_prototype[@]::$3-$2}")
ARR=("${ARR[@]::$2}" "${sARR[@]/#/$4}" "${ARR[@]:$3}")' # WA #D1570 #D1738 checked
((_ble_bash>=40300)) && ! shopt -q compat42 &&
_ble_script=${_ble_script//'$4'/'"$4"'}
builtin eval -- "${_ble_script//ARR/$1}"
}
## @fn ble/idict#replace arr needle [replacement]
## needle に一致する要素を全て replacement に置換します。
## replacement が指定されていない時は該当要素を unset します。
## @var[in] arr
## @var[in] needle
## @var[in,opt] replacement
function ble/idict#replace {
local _ble_local_script='
local iARR=0 extARR=1
for iARR in "${!ARR[@]}"; do
[[ ${ARR[iARR]} == "$2" ]] || continue
extARR=0
if (($#>=3)); then
ARR[iARR]=$3
else
builtin unset -v '\''ARR[iARR]'\''
fi
done
return "$extARR"
'; builtin eval -- "${_ble_local_script//ARR/$1}"
}
function ble/idict#copy {
local _ble_script='
'$1'=()
local i'$1$2'
for i'$1$2' in "${!'$2'[@]}"; do
'$1'[i'$1$2']=${'$2'[i'$1$2']}
done'
builtin eval -- "$_ble_script"
}
_ble_string_prototype=' '
function ble/string#reserve-prototype {
local n=$1 c
for ((c=${#_ble_string_prototype};c<n;c*=2)); do
_ble_string_prototype=$_ble_string_prototype$_ble_string_prototype
done
}
## @fn ble/string#repeat str count
## @param[in] str
## @param[in] count
## @var[out] ret
function ble/string#repeat {
ble/string#reserve-prototype "$2"
ret=${_ble_string_prototype::$2}
ret=${ret// /"$1"}
}
## @fn ble/string#common-prefix a b
## @param[in] a b
## @var[out] ret
function ble/string#common-prefix {
local a=$1 b=$2
((${#a}>${#b})) && local a=$b b=$a
b=${b::${#a}}
if [[ $a == "$b" ]]; then
ret=$a
return 0
fi
# l <= 解 < u, (${a:u}: 一致しない, ${a:l} 一致する)
local l=0 u=${#a} m
while ((l+1<u)); do
((m=(l+u)/2))
if [[ ${a::m} == "${b::m}" ]]; then
((l=m))
else
((u=m))
fi
done
ret=${a::l}
}
## @fn ble/string#common-suffix a b
## @param[in] a b
## @var[out] ret
function ble/string#common-suffix {
local a=$1 b=$2
((${#a}>${#b})) && local a=$b b=$a
b=${b:${#b}-${#a}}
if [[ $a == "$b" ]]; then
ret=$a
return 0
fi
# l < 解 <= u, (${a:l}: 一致しない, ${a:u} 一致する)
local l=0 u=${#a} m
while ((l+1<u)); do
((m=(l+u+1)/2))
if [[ ${a:m} == "${b:m}" ]]; then
((u=m))
else
((l=m))
fi
done
ret=${a:u}
}
## @fn ble/string#split arr sep str...
## 文字列を分割します。
## 空白類を分割に用いた場合は、空要素は削除されます。
##
## @param[out] arr 分割した文字列を格納する配列名を指定します。
## @param[in] sep 分割に使用する文字を指定します。
## @param[in] str 分割する文字列を指定します。
##
function ble/string#split {
local IFS=$2
if [[ -o noglob ]]; then
# Note: 末尾の sep が無視されない様に、末尾に手で sep を 1 個追加している。
builtin eval "$1=(\$3\$2)"
else
set -f
builtin eval "$1=(\$3\$2)"
set +f
fi
}
function ble/string#split-words {
local IFS=$_ble_term_IFS
if [[ -o noglob ]]; then
builtin eval "$1=(\$2)"
else
set -f
builtin eval "$1=(\$2)"
set +f
fi
}
## @fn ble/string#split-lines arr text
## 文字列を行に分割します。空行も省略されません。
##
## @param[out] arr 分割した文字列を格納する配列名を指定します。
## @param[in] text 分割する文字列を指定します。
## @var[out] ret
##
if ((_ble_bash>=40000)); then
function ble/string#split-lines {
mapfile -t "$1" <<< "$2"
}
else
function ble/string#split-lines {
ble/util/mapfile "$1" <<< "$2"
}
fi
## @fn ble/string#count-char text chars
## @param[in] text
## @param[in] chars
## 検索対象の文字の集合を指定します。
## @var[out] ret
function ble/string#count-char {
local text=$1 char=$2
text=${text//[!"$char"]}
ret=${#text}
}
## @fn ble/string#count-string text string
## @var[out] ret
function ble/string#count-string {
local text=${1//"$2"}
((ret=(${#1}-${#text})/${#2}))
}
## @fn ble/string#index-of text needle [n]
## @param[in] text
## @param[in] needle
## @param[in] n
## この引数を指定したとき n 番目の一致を検索します。
## @var[out] ret
## 一致した場合に見つかった位置を返します。
## 見つからなかった場合に -1 を返します。
## @exit
## 一致した場合に成功し、見つからなかった場合に失敗します。
function ble/string#index-of {
local haystack=$1 needle=$2 count=${3:-1}
ble/string#repeat '*"$needle"' "$count"; local pattern=$ret
builtin eval "local transformed=\${haystack#$pattern}"
((ret=${#haystack}-${#transformed}-${#needle},
ret<0&&(ret=-1),ret>=0))
}
## @fn ble/string#last-index-of text needle [n]
## @param[in] text
## @param[in] needle
## @param[in] n
## この引数を指定したとき n 番目の一致を検索します。
## @var[out] ret
function ble/string#last-index-of {
local haystack=$1 needle=$2 count=${3:-1}
ble/string#repeat '"$needle"*' "$count"; local pattern=$ret
builtin eval "local transformed=\${haystack%$pattern}"
if [[ $transformed == "$haystack" ]]; then
ret=-1
else
ret=${#transformed}
fi
((ret>=0))
}
## @fn ble/string#toggle-case text
## @fn ble/string#toupper text
## @fn ble/string#tolower text
## @param[in] text
## @var[out] ret
_ble_util_string_lower_list=abcdefghijklmnopqrstuvwxyz
_ble_util_string_upper_list=ABCDEFGHIJKLMNOPQRSTUVWXYZ
function ble/string#toggle-case.impl {
local LC_ALL= LC_COLLATE=C
local text=$1 ch i
local -a buff
for ((i=0;i<${#text};i++)); do
ch=${text:i:1}
if [[ $ch == [A-Z] ]]; then
ch=${_ble_util_string_upper_list%%"$ch"*}
ch=${_ble_util_string_lower_list:${#ch}:1}
elif [[ $ch == [a-z] ]]; then
ch=${_ble_util_string_lower_list%%"$ch"*}
ch=${_ble_util_string_upper_list:${#ch}:1}
fi
ble/array#push buff "$ch"
done
IFS= builtin eval 'ret="${buff[*]-}"'
}
function ble/string#toggle-case {
ble/string#toggle-case.impl "$1" 2>/dev/null # suppress locale error #D1440
}
## @fn ble/string#tolower text
## @fn ble/string#toupper text
## @var[out] ret
if ((_ble_bash>=40000)); then
function ble/string#tolower { ret=${1,,}; }
function ble/string#toupper { ret=${1^^}; }
else
function ble/string#tolower.impl {
local LC_ALL= LC_COLLATE=C
local i text=$1 ch
local -a buff=()
for ((i=0;i<${#text};i++)); do
ch=${text:i:1}
if [[ $ch == [A-Z] ]]; then
ch=${_ble_util_string_upper_list%%"$ch"*}
ch=${_ble_util_string_lower_list:${#ch}:1}
fi
ble/array#push buff "$ch"
done
IFS= builtin eval 'ret="${buff[*]-}"'
}
function ble/string#toupper.impl {
local LC_ALL= LC_COLLATE=C
local i text=$1 ch
local -a buff=()
for ((i=0;i<${#text};i++)); do
ch=${text:i:1}
if [[ $ch == [a-z] ]]; then
ch=${_ble_util_string_lower_list%%"$ch"*}
ch=${_ble_util_string_upper_list:${#ch}:1}
fi
ble/array#push buff "$ch"
done
IFS= builtin eval 'ret="${buff[*]-}"'
}
function ble/string#tolower {
ble/string#tolower.impl "$1" 2>/dev/null # suppress locale error #D1440
}
function ble/string#toupper {
ble/string#toupper.impl "$1" 2>/dev/null # suppress locale error #D1440
}
fi
function ble/string#capitalize {
local tail=$1
# prefix
local rex='^[^a-zA-Z0-9]*'
[[ $tail =~ $rex ]]
local out=$BASH_REMATCH
tail=${tail:${#BASH_REMATCH}}
# words
rex='^[a-zA-Z0-9]+[^a-zA-Z0-9]*'
while [[ $tail =~ $rex ]]; do
local rematch=$BASH_REMATCH
ble/string#toupper "${rematch::1}"; out=$out$ret
ble/string#tolower "${rematch:1}" ; out=$out$ret
tail=${tail:${#rematch}}
done
ret=$out$tail
}
## @fn ble/string#trim text
## @var[out] ret
function ble/string#trim {
ret=$1
local rex=$'^[ \t\n]+'
[[ $ret =~ $rex ]] && ret=${ret:${#BASH_REMATCH}}
local rex=$'[ \t\n]+$'
[[ $ret =~ $rex ]] && ret=${ret::${#ret}-${#BASH_REMATCH}}
}
## @fn ble/string#ltrim text
## @var[out] ret
function ble/string#ltrim {
ret=$1
local rex=$'^[ \t\n]+'
[[ $ret =~ $rex ]] && ret=${ret:${#BASH_REMATCH}}
}
## @fn ble/string#rtrim text
## @var[out] ret
function ble/string#rtrim {
ret=$1
local rex=$'[ \t\n]+$'
[[ $ret =~ $rex ]] && ret=${ret::${#ret}-${#BASH_REMATCH}}
}
## @fn ble/string#escape-characters text chars1 [chars2]
## @param[in] text
## @param[in] chars1
## @param[in,opt] chars2
## @var[out] ret
if ((_ble_bash>=50200)); then
function ble/string#escape-characters {
ret=$1