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