extract_utils: Consider path prefixes other than smali/

Currently we only decode source code if there are any changed
files in the patch whose path starts with 'smali/', but in the
case of multi dex APKs, apktool will instead give multiple smali
directories in the form 'smali_<name of dex file>'.

Knowing that, a better way to check if the source needs decoding
is to see if any path starts with 'smali', which should deal with
most edge cases.

Signed-off-by: bengris32 <bengris32@protonmail.ch>
Change-Id: I3927fe5bd4aae00dbbd3b1895fb15ca67e33afbe

Author: bengris32

extract_utils/fixups_blob.py

@@ -34,7 +34,7 @@
 
 APKTOOL_NO_RES_ARG = '--no-res'
 APKTOOL_NO_SRC_ARG = '--no-src'
-APKTOOL_SRC_PATH = 'smali/'
+APKTOOL_SRC_PATH_PREFIX = 'smali'
 APKTOOL_RES_PATH = 'res/'
 APKTOOL_ANDROID_MANIFEST_NAME = 'AndroidManifest.xml'
 
@@ -226,7 +226,7 @@ def __get_apktool_unpack_args(
             if affected_file.startswith(APKTOOL_RES_PATH):
                 decode_res = True
 
-            if affected_file.startswith(APKTOOL_SRC_PATH):
+            if affected_file.startswith(APKTOOL_SRC_PATH_PREFIX):
                 decode_src = True
 
             if affected_file == APKTOOL_ANDROID_MANIFEST_NAME: