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 readonly N="
   9 "
  10
  11 _C=0
  12
  13 hotplug_dev() {
  14         env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug net
  15 }
  16
  17 append() {
  18         local var="$1"
  19         local value="$2"
  20         local sep="${3:- }"
  21
  22         eval "export -n -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
  23 }
  24
  25 reset_cb() {
  26         config_cb() { return 0; }
  27         option_cb() { return 0; }
  28 }
  29 reset_cb
  30
  31 config () {
  32         local cfgtype="$1"
  33         local name="$2"
  34
  35         _C=$((_C + 1))
  36         name="${name:-cfg${_C}}"
  37         config_cb "$cfgtype" "$name"
  38         CONFIG_SECTION="$name"
  39         export -n "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
  40 }
  41
  42 option () {
  43         local varname="$1"; shift
  44         local value="$*"
  45
  46         export -n "CONFIG_${CONFIG_SECTION}_${varname}=$value"
  47         option_cb "$varname" "$*"
  48 }
  49
  50 config_rename() {
  51         local OLD="$1"
  52         local NEW="$2"
  53         local oldvar
  54         local newvar
  55
  56         [ "$OLD" -a "$NEW" ] || return
  57         for oldvar in `set | grep ^CONFIG_${OLD}_ | \
  58                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  59                 newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
  60                 eval "export -n \"$newvar=\${$oldvar}\""
  61                 unset "$oldvar"
  62         done
  63
  64         [ "$CONFIG_SECTION" = "$OLD" ] && CONFIG_SECTION="$NEW"
  65 }
  66
  67 config_unset() {
  68         config_set "$1" "$2" ""
  69 }
  70
  71 config_clear() {
  72         local SECTION="$1"
  73         local oldvar
  74
  75         for oldvar in `set | grep ^CONFIG_${SECTION}_ | \
  76                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  77                 unset $oldvar
  78         done
  79 }
  80
  81 config_load() {
  82         local file="/etc/config/$1"
  83         _C=0
  84         CONFIG_SECTION=
  85
  86         [ -e "$file" ] && {
  87                 . $file
  88         } || return 1
  89
  90         ${CONFIG_SECTION:+config_cb}
  91 }
  92
  93 config_get() {
  94         case "$3" in
  95                 "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
  96                 *)  eval "export -n -- \"$1=\${CONFIG_${2}_${3}}\"";;
  97         esac
  98 }
  99
 100 config_set() {
 101         local section="$1"
 102         local option="$2"
 103         local value="$3"
 104         export -n "CONFIG_${section}_${option}=$value"
 105 }
 106
 107 load_modules() {
 108         sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 109 }
 110
 111 include() {
 112         local file
 113
 114         for file in $(ls $1/*.sh 2>/dev/null); do
 115                 . $file
 116         done
 117 }
 118
 119 find_mtd_part() {
 120         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 121
 122         PART="${PART##mtd}"
 123         echo "${PART:+/dev/mtdblock/$PART}"
 124 }
 125
 126 strtok() { # <string> { <variable> [<separator>] ... }
 127         local tmp
 128         local val="$1"
 129         local count=0
 130
 131         shift
 132
 133         while [ $# -gt 1 ]; do
 134                 tmp="${val%%$2*}"
 135
 136                 [ "$tmp" = "$val" ] && break
 137
 138                 val="${val#$tmp$2}"
 139
 140                 export -n "$1=$tmp"; count=$((count+1))
 141                 shift 2
 142         done
 143
 144         if [ $# -gt 0 -a "$val" ]; then
 145                 export -n "$1=$val"; count=$((count+1))
 146         fi
 147
 148         return $count
 149 }