package/base-files/default/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
  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 "$var=\"\${$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="$name"
  39         eval CONFIG_${CONFIG_SECTION}_TYPE="$cfgtype"
  40 }
  41
  42 option () {
  43         local varname="$1"; shift
  44
  45         eval CONFIG_${CONFIG_SECTION}_${varname}="$*"
  46         option_cb "$varname" "$*"
  47 }
  48
  49 config_rename() {
  50         local OLD="$1"
  51         local NEW="$2"
  52         local oldvar
  53         local newvar
  54
  55         [ "$OLD" -a "$NEW" ] || return
  56         for oldvar in `set | grep ^CONFIG_${OLD}_ | \
  57                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  58                 newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
  59                 eval "$newvar=\${$oldvar}"
  60                 unset "$oldvar"
  61         done
  62
  63         [ "$CONFIG_SECTION" = "$OLD" ] && CONFIG_SECTION="$NEW"
  64 }
  65
  66 config_unset() {
  67         config_set "$1" "$2" ""
  68 }
  69
  70 config_clear() {
  71         local SECTION="$1"
  72         local oldvar
  73
  74         for oldvar in `set | grep ^CONFIG_${SECTION}_ | \
  75                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  76                 unset $oldvar
  77         done
  78 }
  79
  80 config_load() {
  81         local file="/etc/config/$1"
  82         _C=0
  83         CONFIG_SECTION=
  84
  85         [ -e "$file" ] && {
  86                 . $file
  87         } || return 1
  88
  89         ${CONFIG_SECTION:+config_cb}
  90 }
  91
  92 config_get() {
  93         case "$3" in
  94                 "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
  95                 *)  eval "$1=\"\${CONFIG_${2}_${3}}\"";;
  96         esac
  97 }
  98
  99 config_set() {
 100         eval CONFIG_${1}_${2}="$3"
 101 }
 102
 103 load_modules() {
 104         sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 105 }
 106
 107 include() {
 108         local file
 109
 110         for file in $(ls $1/*.sh 2>/dev/null); do
 111                 . $file
 112         done
 113 }
 114
 115 find_mtd_part() {
 116         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 117
 118         PART="${PART##mtd}"
 119         echo "${PART:+/dev/mtdblock/$PART}"
 120 }
 121
 122 strtok() { # <string> { <variable> [<separator>] ... }
 123         local tmp
 124         local val="$1"
 125         local count=0
 126
 127         shift
 128
 129         while [ $# -gt 1 ]; do
 130                 tmp="${val%%$2*}"
 131
 132                 [ "$tmp" = "$val" ] && break
 133
 134                 val="${val#$tmp$2}"
 135
 136                 eval $1="$tmp"; count=$((count+1))
 137                 shift 2
 138         done
 139
 140         if [ $# -gt 0 -a "$val" ]; then
 141                 eval $1="$val"; count=$((count+1))
 142         fi
 143
 144         return $count
 145 }