1#!/bin/sh 2 3LANG=C 4 5if [ "$1" == "-h" ] 6then 7 cat <<- EOH 8 Usage: $0 [-p] [folder] 9 -p option prints out unused resources, otherwise a total count is printed 10 folder option causes only that app folder to be scanned, default is to scan all folders onder apps/ 11 EOH 12 exit 13fi 14 15showall=no 16if [ "$1" == "-p" ] 17then 18 showall=yes 19 shift 20fi 21 22apps=$1 23if [ "$apps" == "" ] 24then 25 apps=$ANDROID_BUILD_TOP/packages/apps/* 26fi 27 28for app in $apps 29do 30 echo '-----------------------------------------------------------' 31 if [ "$app" == "." ] 32 then 33 app=$(pwd) 34 fi 35 if [ -d $app/res ] 36 then 37 appname=$(basename $app) 38 resources= 39 for res in $(echo $app/res/* $(find $ANDROID_BUILD_TOP/vendor -type d -wholename $ANDROID_BUILD_TOP/vendor/*/$appname/res | grep overlay)) 40 do 41 resources="$resources $(echo $res | grep -v '\-mcc\|[a-z]*-[a-z][a-z]$\|[a-z]*-[a-z][a-z]-.*')" 42 done 43 sources=$app/src 44 if [ -d $app/tests ] 45 then 46 sources="$sources $app/tests" 47 fi 48 if [ -d $app/samples ] 49 then 50 sources="$sources $app/samples" 51 fi 52 53 # find the R.java file that contains all the generated resource identifiers 54 rDotJava=$(find $ANDROID_BUILD_TOP/out/target/common/obj/APPS/${appname}_intermediates/ -name R.java) 55 56 # Simplistically process the content of the file to get the names of all the constants, 57 # and try to find a reference to each constant. 58 59 # First take all the input files and concatenate them, removing newlines. This allows us to 60 # find expressions that are broken up over multiple lines, i.e. R.drawable.\nsomeconstant 61 find $resources $sources $app/AndroidManifest.xml -type f -print |xargs cat | tr -d '\n ' > /tmp/everything$$ 62 63 # Now look for each of the constants in the contatenated file. 64 for i in $(cat $rDotJava | grep "\w*=0x\d*" | sed 's/ *public static final int //' | sed 's/=0x.*//') 65 do 66 # Since periods in the names get translated to underscores in R.java, and you can actually 67 # refer to such constants from java by using an underscore instead of a period, we also 68 # replace all underscores with a pattern that will match periods and underscores. 69 p=$(echo $i | sed 's/_/[\\._]/g') 70 echo $i $(grep -cw R\\..*\\.$i\\\|@style/$p\\\|@drawable/$p\\\|@anim/$p\\\|@color/$p\\\|@xml/$p\\\|@layout/$p\\\|@menu/$p\\\|@+id/$p\\\|@array/$p\\\|@string/$p\\\|@dimen/$p\\\|\[a-z\]\*:$p\\\|enumname=\"$p\\\|\<item\>$p\< < /tmp/everything$$) 71 done | grep " 0$" | { 72 # this block gets as its input a list of constants for which no references were found, one per line 73 if [ "$showall" == "yes" ] 74 then 75 echo $app 76 cat 77 else 78 count=$(wc -l) 79 if [ "$count" != "0" ] 80 then 81 echo $app: $count unused resources 82 fi 83 fi 84 } 85 rm /tmp/everything$$ 86 fi 87done 88