add initial version of the shell api

diff --git a/sh/uci.sh b/sh/uci.sh
new file mode 100755 (executable)
index 0000000..595a007
--- /dev/null
+++ b/sh/uci.sh
@@ -0,0 +1,178 @@
+#!/bin/sh
+# Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
+# Copyright (C) 2006-2008 OpenWrt.org
+
+# newline
+N="
+"
+
+_C=0
+NO_EXPORT=1
+LOAD_STATE=1
+LIST_SEP=" "
+
+hotplug_dev() {
+       env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug-call net
+}
+
+append() {
+       local var="$1"
+       local value="$2"
+       local sep="${3:- }"
+       
+       eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
+}
+
+list_contains() {
+       local var="$1"
+       local str="$2"
+       local val
+
+       eval "val=\" \${$var} \""
+       [ "${val%% $str *}" != "$val" ]
+}
+
+list_remove() {
+       local var="$1"
+       local remove="$2"
+       local val
+
+       eval "val=\" \${$var} \""
+       val1="${val%% $remove *}"
+       [ "$val1" = "$val" ] && return
+       val2="${val##* $remove }"
+       [ "$val2" = "$val" ] && return
+       val="${val1## } ${val2%% }"
+       val="${val%% }"
+       eval "export ${NO_EXPORT:+-n} -- \"$var=\$val\""
+}
+
+config_load() {
+       [ -n "$IPKG_INSTROOT" ] && return 0
+       uci_load "$@"
+}
+
+reset_cb() {
+       config_cb() { return 0; }
+       option_cb() { return 0; }
+       list_cb() { return 0; }
+}
+reset_cb
+
+package() {
+       return 0
+}
+
+config () {
+       local cfgtype="$1"
+       local name="$2"
+       
+       export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
+       name="${name:-cfg$CONFIG_NUM_SECTIONS}"
+       append CONFIG_SECTIONS "$name"
+       [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
+       export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
+       export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
+}
+
+option () {
+       local varname="$1"; shift
+       local value="$*"
+
+       export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
+       [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
+}
+
+list() {
+       local varname="$1"; shift
+       local value="$*"
+       local len
+
+       config_get len "$CONFIG_SECTION" "${varname}_LENGTH" 
+       len="$((${len:-0} + 1))"
+       config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
+       config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
+       append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
+       list_cb "$varname" "$*"
+}
+
+config_unset() {
+       config_set "$1" "$2" ""
+}
+
+config_clear() {
+       local SECTION="$1"
+       local oldvar
+
+       list_remove CONFIG_SECTIONS "$SECTION"
+       export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
+
+       for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
+               sed -e 's/\(.*\)=.*$/\1/'` ; do 
+               unset $oldvar 
+       done
+}
+
+config_get() {
+       case "$3" in
+               "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
+               *)  eval "export ${NO_EXPORT:+-n} -- \"$1=\${CONFIG_${2}_${3}}\"";;
+       esac
+}
+
+# config_get_bool <variable> <section> <option> [<default>]
+config_get_bool() {
+       local _tmp
+       config_get "_tmp" "$2" "$3"
+       case "$_tmp" in
+               1|on|true|enabled) export ${NO_EXPORT:+-n} "$1=1";;
+               0|off|false|disabled) export ${NO_EXPORT:+-n} "$1=0";;
+               *) eval "$1=$4";;
+       esac
+}
+
+config_set() {
+       local section="$1"
+       local option="$2"
+       local value="$3"
+       local old_section="$CONFIG_SECTION"
+
+       CONFIG_SECTION="$section"
+       option "$option" "$value"
+       CONFIG_SECTION="$old_section"
+}
+
+config_foreach() {
+       local function="$1"
+       [ "$#" -ge 1 ] && shift
+       local type="$1"
+       [ "$#" -ge 1 ] && shift
+       local section cfgtype
+       
+       [ -z "$CONFIG_SECTIONS" ] && return 0
+       for section in ${CONFIG_SECTIONS}; do
+               config_get cfgtype "$section" TYPE
+               [ -n "$type" -a "x$cfgtype" != "x$type" ] && continue
+               eval "$function \"\$section\" \"\$@\""
+       done
+}
+
+config_list_foreach() {
+       [ "$#" -ge 3 ] || return 0
+       local section="$1"; shift
+       local option="$1"; shift
+       local function="$1"; shift
+       local val
+       local len
+       local c=1
+
+       config_get len "${section}" "${option}_LENGTH"
+       [ -z "$len" ] && return 0
+       while [ $c -le "$len" ]; do
+               config_get val "${section}" "${option}_ITEM$c"
+               eval "$function \"\$val\" \"$@\""
+               c="$(($c + 1))"
+       done
+}
+
+