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openwrt/package/base-files/files/etc/functions.sh

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#!/bin/sh
# Copyright (C) 2006 OpenWrt.org
# Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
alias debug=${DEBUG:-:}
# newline
readonly N="
"
_C=0
hotplug_dev() {
env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug net
}
append() {
local var="$1"
local value="$2"
local sep="${3:- }"
eval "export -n -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
}
reset_cb() {
config_cb() { return 0; }
option_cb() { return 0; }
}
reset_cb
config () {
local cfgtype="$1"
local name="$2"
_C=$((_C + 1))
name="${name:-cfg${_C}}"
config_cb "$cfgtype" "$name"
CONFIG_SECTION="$name"
export -n "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
}
option () {
local varname="$1"; shift
local value="$*"
export -n "CONFIG_${CONFIG_SECTION}_${varname}=$value"
option_cb "$varname" "$*"
}
config_rename() {
local OLD="$1"
local NEW="$2"
local oldvar
local newvar
[ "$OLD" -a "$NEW" ] || return
for oldvar in `set | grep ^CONFIG_${OLD}_ | \
sed -e 's/\(.*\)=.*$/\1/'` ; do
newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
eval "export -n \"$newvar=\${$oldvar}\""
unset "$oldvar"
done
[ "$CONFIG_SECTION" = "$OLD" ] && CONFIG_SECTION="$NEW"
}
config_unset() {
config_set "$1" "$2" ""
}
config_clear() {
local SECTION="$1"
local oldvar
for oldvar in `set | grep ^CONFIG_${SECTION}_ | \
sed -e 's/\(.*\)=.*$/\1/'` ; do
unset $oldvar
done
}
config_load() {
local file="/etc/config/$1"
_C=0
CONFIG_SECTION=
[ -e "$file" ] && {
. $file
} || return 1
${CONFIG_SECTION:+config_cb}
}
config_get() {
case "$3" in
"") eval "echo \"\${CONFIG_${1}_${2}}\"";;
*) eval "export -n -- \"$1=\${CONFIG_${2}_${3}}\"";;
esac
}
config_set() {
local section="$1"
local option="$2"
local value="$3"
export -n "CONFIG_${section}_${option}=$value"
}
load_modules() {
sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
}
include() {
local file
for file in $(ls $1/*.sh 2>/dev/null); do
. $file
done
}
find_mtd_part() {
local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
PART="${PART##mtd}"
echo "${PART:+/dev/mtdblock/$PART}"
}
strtok() { # <string> { <variable> [<separator>] ... }
local tmp
local val="$1"
local count=0
shift
while [ $# -gt 1 ]; do
tmp="${val%%$2*}"
[ "$tmp" = "$val" ] && break
val="${val#$tmp$2}"
export -n "$1=$tmp"; count=$((count+1))
shift 2
done
if [ $# -gt 0 -a "$val" ]; then
export -n "$1=$val"; count=$((count+1))
fi
return $count
}