AI 144950: Manual integration of 144342 and 144547 from donutburger to cupcake.

  Fix bag (string-array, etc) behavior with overlays.
  We used to replace elements in the default with elements from the
  overlay.  This change causes us to empty the array first so if the
  overlay array is smaller we don't end up with elements from the
  default array showing through at the end of the final result.
  Ex: [A,B,C] default with [D] overlay should give [D] but used to
  give [D,B,C]
  BUG=1754390

Automated import of CL 144950

1 files changed, 24 insertions, 3 deletions

diff --git a/tools/aapt/ResourceTable.cpp b/tools/aapt/ResourceTable.cpp
index 6f71a1e..a09b1a6 100644
--- a/tools/aapt/ResourceTable.cpp
+++ b/tools/aapt/ResourceTable.cpp
@@ -1109,7 +1109,8 @@ status_t compileResourceFile(Bundle* bundle,
 
                 if (!localHasErrors) {
                     err = outTable->startBag(SourcePos(in->getPrintableSource(), block.getLineNumber()),
-                                             myPackage, curType, ident, parentIdent, &curParams);
+                                             myPackage, curType, ident, parentIdent, &curParams, 
+                                             overwrite);
                     if (err != NO_ERROR) {
                         hasErrors = localHasErrors = true;
                     }
@@ -1409,6 +1410,8 @@ status_t ResourceTable::startBag(const SourcePos& sourcePos,
                                  const ResTable_config* params,
                                  bool replace, bool isId)
 {
+    status_t result = NO_ERROR;
+
     // Check for adding entries in other packages...  for now we do
     // nothing.  We need to do the right thing here to support skinning.
     uint32_t rid = mAssets->getIncludedResources()
@@ -1442,8 +1445,15 @@ status_t ResourceTable::startBag(const SourcePos& sourcePos,
         }
         e->setParent(bagParent);
     }
-    
-    return e->makeItABag(sourcePos);
+
+    if ((result = e->makeItABag(sourcePos)) != NO_ERROR) {
+        return result;
+    }
+
+    if (replace) { 
+        return e->emptyBag(sourcePos);
+    }
+    return result;
 }
 
 status_t ResourceTable::addBag(const SourcePos& sourcePos,
@@ -2798,6 +2808,17 @@ status_t ResourceTable::Entry::addToBag(const SourcePos& sourcePos,
     return NO_ERROR;
 }
 
+status_t ResourceTable::Entry::emptyBag(const SourcePos& sourcePos)
+{
+    status_t err = makeItABag(sourcePos);
+    if (err != NO_ERROR) {
+        return err;
+    }
+
+    mBag.clear();
+    return NO_ERROR;
+}
+
 status_t ResourceTable::Entry::generateAttributes(ResourceTable* table,
                                                   const String16& package)
 {