Function applyFileOverlay

tools/aapt/Resource.cpp:567–675

}

static bool applyFileOverlay(Bundle *bundle,
                             const sp<AaptAssets>& assets,
                             sp<ResourceTypeSet> *baseSet,
                             const char *resType)
{
    if (bundle->getVerbose()) {
        printf("applyFileOverlay for %s\n", resType);
    }

    // Replace any base level files in this category with any found from the overlay
    // Also add any found only in the overlay.
    sp<AaptAssets> overlay = assets->getOverlay();
    String8 resTypeString(resType);

    // work through the linked list of overlays
    while (overlay.get()) {
        KeyedVector<String8, sp<ResourceTypeSet> >* overlayRes = overlay->getResources();

        // get the overlay resources of the requested type
        ssize_t index = overlayRes->indexOfKey(resTypeString);
        if (index >= 0) {
            sp<ResourceTypeSet> overlaySet = overlayRes->valueAt(index);

            // for each of the resources, check for a match in the previously built
            // non-overlay "baseset".
            size_t overlayCount = overlaySet->size();
            for (size_t overlayIndex=0; overlayIndex<overlayCount; overlayIndex++) {
                if (bundle->getVerbose()) {
                    printf("trying overlaySet Key=%s\n",overlaySet->keyAt(overlayIndex).string());
                }
                size_t baseIndex = UNKNOWN_ERROR;
                if (baseSet->get() != NULL) {
                    baseIndex = (*baseSet)->indexOfKey(overlaySet->keyAt(overlayIndex));
                }
                if (baseIndex < UNKNOWN_ERROR) {
                    // look for same flavor.  For a given file (strings.xml, for example)
                    // there may be a locale specific or other flavors - we want to match
                    // the same flavor.
                    sp<AaptGroup> overlayGroup = overlaySet->valueAt(overlayIndex);
                    sp<AaptGroup> baseGroup = (*baseSet)->valueAt(baseIndex);

                    DefaultKeyedVector<AaptGroupEntry, sp<AaptFile> > overlayFiles =
                            overlayGroup->getFiles();
                    if (bundle->getVerbose()) {
                        DefaultKeyedVector<AaptGroupEntry, sp<AaptFile> > baseFiles =
                                baseGroup->getFiles();
                        for (size_t i=0; i < baseFiles.size(); i++) {
                            printf("baseFile " ZD " has flavor %s\n", (ZD_TYPE) i,
                                    baseFiles.keyAt(i).toString().string());
                        }
                        for (size_t i=0; i < overlayFiles.size(); i++) {
                            printf("overlayFile " ZD " has flavor %s\n", (ZD_TYPE) i,
                                    overlayFiles.keyAt(i).toString().string());
                        }
                    }

                    size_t overlayGroupSize = overlayFiles.size();
                    for (size_t overlayGroupIndex = 0;