scripts/embedded_scripts

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