scripts/embedded_scripts

   1 #!/bin/sh
   2
   3 . ./.config || exit 1
   4
   5 target="$1"
   6 custom_loc="$2"
   7 applet_loc="$3"
   8
   9 test "$target" || exit 1
  10 test "$SED" || SED=sed
  11 test "$DD" || DD=dd
  12
  13 if [ x"$CONFIG_FEATURE_SH_EMBEDDED_SCRIPTS" != x"y" ]
  14 then
  15         printf '#define NUM_SCRIPTS 0\n' >"$target"
  16         exit 0
  17 fi
  18
  19 # Some people were bitten by their system lacking a (proper) od
  20 od -v -b </dev/null >/dev/null
  21 if test $? != 0; then
  22         echo 'od tool is not installed or cannot accept "-v -b" options'
  23         exit 1
  24 fi
  25
  26 custom_scripts=""
  27 if [ -d "$custom_loc" ]
  28 then
  29         custom_scripts=$(cd $custom_loc; ls * 2>/dev/null)
  30 fi
  31 all_scripts=$($srctree/applets/busybox.mkscripts)
  32
  33 # all_scripts includes applet scripts and custom scripts, sort them out
  34 applet_scripts=""
  35 for i in $all_scripts
  36 do
  37     found=0
  38         for j in $custom_scripts
  39         do
  40                 if [ "$i" = "$j" ]
  41                 then
  42                         found=1
  43                         break;
  44                 fi
  45         done
  46         if [ $found -eq 0 ]
  47         then
  48                 # anything that isn't a custom script is an applet script
  49                 applet_scripts="$applet_scripts $i"
  50         fi
  51 done
  52
  53 # we know the custom scripts are present but applet scripts might have
  54 # become detached from their configuration
  55 for i in $applet_scripts
  56 do
  57         #if [ ! -f "$applet_loc/$i" -a ! -f "$custom_loc/$i" ]
  58         if [ ! -f "$applet_loc/$i" ]
  59         then
  60                 echo "missing applet script $i"
  61                 exit 1
  62         fi
  63 done
  64
  65 n=$(echo $custom_scripts $applet_scripts | wc -w)
  66 nall=$(echo $all_scripts | wc -w)
  67
  68 if [ $n -ne $nall ]
  69 then
  70         echo "script mismatch $n != $nall"
  71         exit 1
  72 fi
  73
  74 concatenate_scripts() {
  75         for i in $custom_scripts
  76         do
  77                 cat $custom_loc/$i
  78                 printf '\000'
  79         done
  80         for i in $applet_scripts
  81         do
  82                 cat $applet_loc/$i
  83                 printf '\000'
  84         done
  85 }
  86
  87 exec >"$target.$$"
  88
  89 if [ $n -ne 0 ]
  90 then
  91         printf '#ifdef DEFINE_SCRIPT_DATA\n'
  92         printf 'const uint16_t applet_numbers[] = {\n'
  93         for i in $custom_scripts $applet_scripts
  94         do
  95                 # TODO support applets with names including invalid characters
  96                 printf '\tAPPLET_NO_%s,\n' $i
  97         done
  98         printf '};\n'
  99         printf '#else\n'
 100         printf 'extern const uint16_t applet_numbers[];\n'
 101         printf '#endif\n'
 102 fi
 103
 104 printf "\n"
 105 printf '#define NUM_SCRIPTS %d\n' $n
 106 printf "\n"
 107
 108 if [ $n -ne 0 ]
 109 then
 110         printf '#define UNPACKED_SCRIPTS_LENGTH '
 111         concatenate_scripts | wc -c
 112
 113         printf '#define PACKED_SCRIPTS \\\n'
 114         concatenate_scripts | bzip2 -1 | $DD bs=2 skip=1 2>/dev/null | \
 115         od -v -b \
 116         | grep -v '^ ' \
 117         | $SED -e 's/^[^ ]*//' \
 118                 -e 's/ //g' \
 119                 -e '/^$/d' \
 120                 -e 's/\(...\)/0\1,/g' \
 121                 -e 's/$/ \\/'
 122         printf '\n'
 123 fi
 124
 125 mv -- "$target.$$" "$target"