Use dot instead of colon as separator of custom part.

This is done becase ':' is already used as a separator between package
and type in a full resource name. So if we use ':' it will be consfusing
for custom resource types: com.my.package:layout:2/myLayout ->
com.my.package:layout.2/myLayout.

DD: go/custom-resource-types-in-aapt2

Bug: b/215108200
Test: Resource_test
Change-Id: Ieed256e4376abe0a3788d8198110bef189b55740

1 files changed, 3 insertions, 3 deletions

diff --git a/tools/aapt2/Resource.cpp b/tools/aapt2/Resource.cpp
index 0bb330e26e6f..df8c3b9956d0 100644
--- a/tools/aapt2/Resource.cpp
+++ b/tools/aapt2/Resource.cpp
@@ -139,10 +139,10 @@ ResourceNamedTypeRef ResourceNamedTypeWithDefaultName(ResourceType t) {
 }
 
 std::optional<ResourceNamedTypeRef> ParseResourceNamedType(const android::StringPiece& s) {
-  auto colon = std::find(s.begin(), s.end(), ':');
+  auto dot = std::find(s.begin(), s.end(), '.');
   const ResourceType* parsedType;
-  if (colon != s.end() && colon != std::prev(s.end())) {
-    parsedType = ParseResourceType(s.substr(s.begin(), colon));
+  if (dot != s.end() && dot != std::prev(s.end())) {
+    parsedType = ParseResourceType(s.substr(s.begin(), dot));
   } else {
     parsedType = ParseResourceType(s);
   }