AAPT2: Allow truncating of package names

ResTable_package header only allows 127 UTF-16 characters, so AAPT
would truncate the real package name to fit. AAPT2 would error-out
on any package name longer than 127 UTF-16 characters. This strictness
is not required except when building shared libraries, which use the
full package name as a way of identifying the runtime assigned
package ID to package name mapping.

Bug: 36940145
Test: make aapt2_tests
Change-Id: I7d2b7e50c7ab30c6a6c4f15d310e711f68e35091
diff --git a/tools/aapt2/process/IResourceTableConsumer.h b/tools/aapt2/process/IResourceTableConsumer.h
index 4526a79..30dad802 100644
--- a/tools/aapt2/process/IResourceTableConsumer.h
+++ b/tools/aapt2/process/IResourceTableConsumer.h
@@ -32,9 +32,17 @@
 class ResourceTable;
 class SymbolTable;
 
+// The type of package to build.
+enum class PackageType {
+  kApp,
+  kSharedLib,
+  kStaticLib,
+};
+
 struct IAaptContext {
   virtual ~IAaptContext() = default;
 
+  virtual PackageType GetPackageType() = 0;
   virtual SymbolTable* GetExternalSymbols() = 0;
   virtual IDiagnostics* GetDiagnostics() = 0;
   virtual const std::string& GetCompilationPackage() = 0;