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# Copyright (c) 2014 Bryan Drewery <bdrewery@FreeBSD.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
# Taken from bin/sh/mksyntax.sh is_in_name()
: ${HASH_VAR_NAME_SUB_GLOB:="[!a-zA-Z0-9_]"}
: ${HASH_VAR_NAME_PREFIX:="_HASH_"}
if ! type eargs 2>/dev/null >&2; then
eargs() {
local badcmd="$1"
shift
echo "Bad arguments, ${badcmd}: ""$@" >&2
exit 1
}
fi
if ! type _gsub 2>/dev/null >&2; then
# Based on Shell Scripting Recipes - Chris F.A. Johnson (c) 2005
# Replace a pattern without needing a subshell/exec
_gsub() {
[ $# -eq 3 -o $# -eq 4 ] || eargs _gsub string pattern replacement \
[var_return]
local string="$1"
local pattern="$2"
local replacement="$3"
local var_return="${4:-_gsub}"
local result_l= result_r="${string}"
if [ -n "${pattern}" ]; then
while :; do
case ${result_r} in
*${pattern}*)
result_l=${result_l}${result_r%%${pattern}*}${replacement}
result_r=${result_r#*${pattern}}
;;
*)
break
;;
esac
done
fi
setvar "${var_return}" "${result_l}${result_r}"
}
fi
if ! type _gsub_var_name 2>/dev/null >&2; then
_gsub_var_name() {
[ $# -eq 2 ] || eargs _gsub_var_name string var_return
_gsub "$1" "${HASH_VAR_NAME_SUB_GLOB}" _ "$2"
}
fi
if ! type _gsub_badchars 2>/dev/null >&2; then
_gsub_badchars() {
[ $# -eq 3 ] || eargs _gsub_badchars string badchars var_return
local string="$1"
local badchars="$2"
local var_return="$3"
# Avoid !^- processing as this is just filtering bad characters
# not a pattern.
if [ "${badchars#!}" != "${badchars}" ]; then
badchars="${badchars#!}!"
elif [ "${badchars#^}" != "${badchars}" ]; then
badchars="${badchars#^}^"
fi
case "${badchars}" in
*-*) _gsub "${badchars}" "-" "" badchars ;;
esac
_gsub "${string}" "[${badchars}]" _ "${var_return}"
}
fi
if ! type gsub 2>/dev/null >&2; then
gsub() {
local _gsub
_gsub "$@"
if [ -z "$4" ]; then
echo "${_gsub}"
fi
}
fi
_hash_var_name() {
# Replace anything not HASH_VAR_NAME_SUB_GLOB with _
_gsub_var_name "${HASH_VAR_NAME_PREFIX}B${1}_K${2}" _hash_var_name
}
hash_isset() {
local -; set +x
[ $# -ne 2 ] && eargs hash_isset var key
local var="$1"
local key="$2"
local _hash_var_name
_hash_var_name "${var}" "${key}"
issetvar "${_hash_var_name}"
}
hash_get() {
local -; set +x
[ $# -ne 3 ] && eargs hash_get var key var_return
local var="$1"
local key="$2"
local _hash_var_name
_hash_var_name "${var}" "${key}"
getvar "${_hash_var_name}" "${3}"
}
hash_set() {
local -; set +x
[ $# -eq 3 ] || eargs hash_set var key value
local var="$1"
local key="$2"
local value="$3"
local _hash_var_name
_hash_var_name "${var}" "${key}"
setvar "${_hash_var_name}" "${value}"
}
hash_remove() {
local -; set +x
[ $# -ne 3 ] && eargs hash_remove var key var_return
local var="$1"
local key="$2"
local var_return="$3"
local _hash_var_name ret
_hash_var_name "${var}" "${key}"
ret=0
getvar "${_hash_var_name}" "${var_return}" || ret=$?
if [ ${ret} -eq 0 ]; then
unset "${_hash_var_name}"
fi
return ${ret}
}
hash_unset() {
local -; set +x
[ $# -eq 2 ] || eargs hash_unset var key
local var="$1"
local key="$2"
local _hash_var_name
_hash_var_name "${var}" "${key}"
unset "${_hash_var_name}"
}
list_contains() {
local -; set +x
[ $# -eq 2 ] || eargs list_contains var item
local var="$1"
local item="$2"
local value
getvar "${var}" value || value=
case " ${value} " in *" ${item} "*) ;; *) return 1 ;; esac
return 0
}
list_add() {
local -; set +x
[ $# -eq 2 ] || eargs list_add var item
local var="$1"
local item="$2"
local value
getvar "${var}" value || value=
case " ${value} " in *" ${item} "*) return 0 ;; esac
setvar "${var}" "${value:+${value} }${item}"
}
list_remove() {
local -; set +x
[ $# -eq 2 ] || eargs list_remove var item
local var="$1"
local item="$2"
local value newvalue
getvar "${var}" value || value=
value=" ${value} "
case "${value}" in *" ${item} "*) ;; *) return 1 ;; esac
newvalue="${value% "${item}" *} ${value##* "${item}" }"
newvalue="${newvalue# }"
newvalue="${newvalue% }"
setvar "${var}" "${newvalue}"
}
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