extract_files: Add support for treble compatible makefiles

To be honest, this name is a little misleading, this is how it should
have been done in the first place. This allows devices to copy vendor
files to the proper location depending on TARGET_COPY_OUT_VENDOR rather
than hardcoding system/vendor. This allows devices with dedicated vendor
partitions to copy directly to vendor. The only reason it's optional
is that some nexi set TARGET_COPY_OUT_VENDOR to system which would cause
some weird breakage.

Change-Id: Ic46bc1086737835340abef9f61693d386bc6a5dc

build/tools/extract_utils.sh

@@ -155,9 +155,47 @@ function prefix_match() {
     done
 }
 
+#
+# prefix_match_file:
+#
+# $1: the prefix to match on
+# $2: the file to match the prefix for
+#
+# Internal function which returns true if a filename contains the
+# specified prefix.
+#
+function prefix_match_file() {
+    local PREFIX="$1"
+    local FILE="$2"
+    if [[ "$FILE" =~ ^"$PREFIX" ]]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+#
+# truncate_file
+#
+# $1: the filename to truncate
+# $2: the argument to output the truncated filename to
+#
+# Internal function which truncates a filename by removing the first dir
+# in the path. ex. vendor/lib/libsdmextension.so -> lib/libsdmextension.so
+#
+function truncate_file() {
+    local FILE="$1"
+    RETURN_FILE="$2"
+    local FIND="${FILE%%/*}"
+    local LOCATION="${#FIND}+1"
+    echo ${FILE:$LOCATION}
+}
+
 #
 # write_product_copy_files:
 #
+# $1: make treble compatible makefile - optional, default to false
+#
 # Creates the PRODUCT_COPY_FILES section in the product makefile for all
 # items in the list which do not start with a dash (-).
 #
@@ -166,6 +204,7 @@ function write_product_copy_files() {
     local TARGET=
     local FILE=
     local LINEEND=
+    local TREBLE_COMPAT=$1
 
     if [ "$COUNT" -eq "0" ]; then
         return 0
@@ -180,8 +219,19 @@ function write_product_copy_files() {
         fi
 
         TARGET=$(target_file "$FILE")
-        printf '    %s/proprietary/%s:system/%s%s\n' \
-            "$OUTDIR" "$TARGET" "$TARGET" "$LINEEND" >> "$PRODUCTMK"
+        if [ "$TREBLE_COMPAT" == "true" ] || [ "$TREBLE_COMPAT" == "1" ]; then
+            if prefix_match_file "vendor/" $TARGET ; then
+                local OUTTARGET=$(truncate_file $TARGET)
+                printf '    %s/proprietary/%s:$(TARGET_COPY_OUT_VENDOR)/%s%s\n' \
+                    "$OUTDIR" "$TARGET" "$OUTTARGET" "$LINEEND" >> "$PRODUCTMK"
+            else
+                printf '    %s/proprietary/%s:system/%s%s\n' \
+                    "$OUTDIR" "$TARGET" "$TARGET" "$LINEEND" >> "$PRODUCTMK"
+            fi
+        else
+            printf '    %s/proprietary/%s:system/%s%s\n' \
+                "$OUTDIR" "$TARGET" "$TARGET" "$LINEEND" >> "$PRODUCTMK"
+        fi
     done
     return 0
 }
@@ -616,6 +666,7 @@ function parse_file_list() {
 # write_makefiles:
 #
 # $1: file containing the list of items to extract
+# $2: make treble compatible makefile - optional
 #
 # Calls write_product_copy_files and write_product_packages on
 # the given file and appends to the Android.mk as well as
@@ -623,7 +674,7 @@ function parse_file_list() {
 #
 function write_makefiles() {
     parse_file_list "$1"
-    write_product_copy_files
+    write_product_copy_files "$2"
     write_product_packages
 }