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

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3 # Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
   4
   5 alias debug=${DEBUG:-:}
   6
   7 # newline
   8 N="
   9 "
  10
  11 _C=0
  12 NO_EXPORT=1
  13
  14 hotplug_dev() {
  15         env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug net
  16 }
  17
  18 append() {
  19         local var="$1"
  20         local value="$2"
  21         local sep="${3:- }"
  22
  23         eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
  24 }
  25
  26 reset_cb() {
  27         config_cb() { return 0; }
  28         option_cb() { return 0; }
  29 }
  30 reset_cb
  31
  32 config () {
  33         local cfgtype="$1"
  34         local name="$2"
  35
  36         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
  37         name="${name:-cfg$CONFIG_NUM_SECTIONS}"
  38         append CONFIG_SECTIONS "$name"
  39         config_cb "$cfgtype" "$name"
  40         export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
  41         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
  42 }
  43
  44 option () {
  45         local varname="$1"; shift
  46         local value="$*"
  47
  48         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
  49         option_cb "$varname" "$*"
  50 }
  51
  52 config_rename() {
  53         local OLD="$1"
  54         local NEW="$2"
  55         local oldvar
  56         local newvar
  57
  58         [ "$OLD" -a "$NEW" ] || return
  59         for oldvar in `set | grep ^CONFIG_${OLD}_ | \
  60                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  61                 newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
  62                 eval "export ${NO_EXPORT:+-n} \"$newvar=\${$oldvar}\""
  63                 unset "$oldvar"
  64         done
  65         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"
  66
  67         [ "$CONFIG_SECTION" = "$OLD" ] && export ${NO_EXPORT:+-n} CONFIG_SECTION="$NEW"
  68 }
  69
  70 config_unset() {
  71         config_set "$1" "$2" ""
  72 }
  73
  74 config_clear() {
  75         local SECTION="$1"
  76         local oldvar
  77
  78         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , ,")"
  79         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
  80
  81         for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
  82                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  83                 unset $oldvar
  84         done
  85 }
  86
  87 config_load() {
  88         local file="$UCI_ROOT/etc/config/$1"
  89         _C=0
  90         export ${NO_EXPORT:+-n} CONFIG_SECTIONS=
  91         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=0
  92         export ${NO_EXPORT:+-n} CONFIG_SECTION=
  93
  94         [ -e "$file" ] && {
  95                 . $file
  96         } || return 1
  97
  98         ${CONFIG_SECTION:+config_cb}
  99 }
 100
 101 config_get() {
 102         case "$3" in
 103                 "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
 104                 *)  eval "export ${NO_EXPORT:+-n} -- \"$1=\${CONFIG_${2}_${3}}\"";;
 105         esac
 106 }
 107
 108 # config_get_bool <variable> <section> <option> [<default>]
 109 config_get_bool() {
 110         local _tmp
 111         config_get "_tmp" "$2" "$3"
 112         case "$_tmp" in
 113                 1|on|enabled) export ${NO_EXPORT:+-n} "$1=1";;
 114                 0|off|disabled) export ${NO_EXPORT:+-n} "$1=0";;
 115                 *) eval "$1=${4:-0}";;
 116         esac
 117 }
 118
 119 config_set() {
 120         local section="$1"
 121         local option="$2"
 122         local value="$3"
 123         export ${NO_EXPORT:+-n} "CONFIG_${section}_${option}=$value"
 124 }
 125
 126 config_foreach() {
 127         local function="$1"
 128         local type="$2"
 129         local section cfgtype
 130
 131         [ -z "$CONFIG_SECTIONS" ] && return 0
 132         for section in ${CONFIG_SECTIONS}; do
 133                 config_get cfgtype "$section" TYPE
 134                 [ -n "$type" -a "$cfgtype" != "$type" ] && continue
 135                 eval "$function \"\$section\""
 136         done
 137 }
 138
 139 load_modules() {
 140         cd /etc/modules.d
 141         sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 142 }
 143
 144 include() {
 145         local file
 146
 147         for file in $(ls $1/*.sh 2>/dev/null); do
 148                 . $file
 149         done
 150 }
 151
 152 find_mtd_part() {
 153         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 154         local PREFIX=/dev/mtdblock
 155
 156         PART="${PART##mtd}"
 157         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 158         echo "${PART:+$PREFIX$PART}"
 159 }
 160
 161 strtok() { # <string> { <variable> [<separator>] ... }
 162         local tmp
 163         local val="$1"
 164         local count=0
 165
 166         shift
 167
 168         while [ $# -gt 1 ]; do
 169                 tmp="${val%%$2*}"
 170
 171                 [ "$tmp" = "$val" ] && break
 172
 173                 val="${val#$tmp$2}"
 174
 175                 export ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
 176                 shift 2
 177         done
 178
 179         if [ $# -gt 0 -a "$val" ]; then
 180                 export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
 181         fi
 182
 183         return $count
 184 }