AAPT2: Fix windows unicode path issues

Mingw64 was being difficult, so instead of defining a wmain entrypoint,
the command line parameters are parsed manually using built-in Windows
methods that support Unicode. The results are converted to UTF8 and
handled just like the rest of the linux/mac version of the code.

This also removes dependencies on std::istream in favour of a
FileInputStream which calls the appropriate unicode version of
open to read a file.

No speed regressions found on Linux or MacOS.

Bug: 62336414
Bug: 63830502
Test: manual
Change-Id: I597da51e33729ed1b98bf246e7e773337fd3fee8
diff --git a/tools/aapt2/test/Builders.cpp b/tools/aapt2/test/Builders.cpp
new file mode 100644
index 0000000..b579545
--- /dev/null
+++ b/tools/aapt2/test/Builders.cpp
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "test/Builders.h"
+
+#include "android-base/logging.h"
+#include "androidfw/StringPiece.h"
+
+#include "io/StringInputStream.h"
+#include "test/Common.h"
+#include "util/Util.h"
+
+using ::aapt::io::StringInputStream;
+using ::android::StringPiece;
+
+namespace aapt {
+namespace test {
+
+ResourceTableBuilder& ResourceTableBuilder::SetPackageId(const StringPiece& package_name,
+                                                         uint8_t id) {
+  ResourceTablePackage* package = table_->CreatePackage(package_name, id);
+  CHECK(package != nullptr);
+  return *this;
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddSimple(const StringPiece& name,
+                                                      const ResourceId& id) {
+  return AddValue(name, id, util::make_unique<Id>());
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddSimple(const StringPiece& name,
+                                                      const ConfigDescription& config,
+                                                      const ResourceId& id) {
+  return AddValue(name, config, id, util::make_unique<Id>());
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddReference(const StringPiece& name,
+                                                         const StringPiece& ref) {
+  return AddReference(name, {}, ref);
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddReference(const StringPiece& name,
+                                                         const ResourceId& id,
+                                                         const StringPiece& ref) {
+  return AddValue(name, id, util::make_unique<Reference>(ParseNameOrDie(ref)));
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddString(const StringPiece& name,
+                                                      const StringPiece& str) {
+  return AddString(name, {}, str);
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddString(const StringPiece& name, const ResourceId& id,
+                                                      const StringPiece& str) {
+  return AddValue(name, id, util::make_unique<String>(table_->string_pool.MakeRef(str)));
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddString(const StringPiece& name, const ResourceId& id,
+                                                      const ConfigDescription& config,
+                                                      const StringPiece& str) {
+  return AddValue(name, config, id, util::make_unique<String>(table_->string_pool.MakeRef(str)));
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddFileReference(const StringPiece& name,
+                                                             const StringPiece& path) {
+  return AddFileReference(name, {}, path);
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddFileReference(const StringPiece& name,
+                                                             const ResourceId& id,
+                                                             const StringPiece& path) {
+  return AddValue(name, id, util::make_unique<FileReference>(table_->string_pool.MakeRef(path)));
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddFileReference(const StringPiece& name,
+                                                             const StringPiece& path,
+                                                             const ConfigDescription& config) {
+  return AddValue(name, config, {},
+                  util::make_unique<FileReference>(table_->string_pool.MakeRef(path)));
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddValue(const StringPiece& name,
+                                                     std::unique_ptr<Value> value) {
+  return AddValue(name, {}, std::move(value));
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddValue(const StringPiece& name, const ResourceId& id,
+                                                     std::unique_ptr<Value> value) {
+  return AddValue(name, {}, id, std::move(value));
+}
+
+ResourceTableBuilder& ResourceTableBuilder::AddValue(const StringPiece& name,
+                                                     const ConfigDescription& config,
+                                                     const ResourceId& id,
+                                                     std::unique_ptr<Value> value) {
+  ResourceName res_name = ParseNameOrDie(name);
+  CHECK(table_->AddResourceAllowMangled(res_name, id, config, {}, std::move(value),
+                                        GetDiagnostics()));
+  return *this;
+}
+
+ResourceTableBuilder& ResourceTableBuilder::SetSymbolState(const StringPiece& name,
+                                                           const ResourceId& id, SymbolState state,
+                                                           bool allow_new) {
+  ResourceName res_name = ParseNameOrDie(name);
+  Symbol symbol;
+  symbol.state = state;
+  symbol.allow_new = allow_new;
+  CHECK(table_->SetSymbolStateAllowMangled(res_name, id, symbol, GetDiagnostics()));
+  return *this;
+}
+
+StringPool* ResourceTableBuilder::string_pool() {
+  return &table_->string_pool;
+}
+
+std::unique_ptr<ResourceTable> ResourceTableBuilder::Build() {
+  return std::move(table_);
+}
+
+std::unique_ptr<Reference> BuildReference(const StringPiece& ref, const Maybe<ResourceId>& id) {
+  std::unique_ptr<Reference> reference = util::make_unique<Reference>(ParseNameOrDie(ref));
+  reference->id = id;
+  return reference;
+}
+
+std::unique_ptr<BinaryPrimitive> BuildPrimitive(uint8_t type, uint32_t data) {
+  android::Res_value value = {};
+  value.size = sizeof(value);
+  value.dataType = type;
+  value.data = data;
+  return util::make_unique<BinaryPrimitive>(value);
+}
+
+AttributeBuilder::AttributeBuilder(bool weak) : attr_(util::make_unique<Attribute>(weak)) {
+  attr_->type_mask = android::ResTable_map::TYPE_ANY;
+}
+
+AttributeBuilder& AttributeBuilder::SetTypeMask(uint32_t typeMask) {
+  attr_->type_mask = typeMask;
+  return *this;
+}
+
+AttributeBuilder& AttributeBuilder::AddItem(const StringPiece& name, uint32_t value) {
+  attr_->symbols.push_back(
+      Attribute::Symbol{Reference(ResourceName({}, ResourceType::kId, name)), value});
+  return *this;
+}
+
+std::unique_ptr<Attribute> AttributeBuilder::Build() {
+  return std::move(attr_);
+}
+
+StyleBuilder& StyleBuilder::SetParent(const StringPiece& str) {
+  style_->parent = Reference(ParseNameOrDie(str));
+  return *this;
+}
+
+StyleBuilder& StyleBuilder::AddItem(const StringPiece& str, std::unique_ptr<Item> value) {
+  style_->entries.push_back(Style::Entry{Reference(ParseNameOrDie(str)), std::move(value)});
+  return *this;
+}
+
+StyleBuilder& StyleBuilder::AddItem(const StringPiece& str, const ResourceId& id,
+                                    std::unique_ptr<Item> value) {
+  AddItem(str, std::move(value));
+  style_->entries.back().key.id = id;
+  return *this;
+}
+
+std::unique_ptr<Style> StyleBuilder::Build() {
+  return std::move(style_);
+}
+
+StyleableBuilder& StyleableBuilder::AddItem(const StringPiece& str, const Maybe<ResourceId>& id) {
+  styleable_->entries.push_back(Reference(ParseNameOrDie(str)));
+  styleable_->entries.back().id = id;
+  return *this;
+}
+
+std::unique_ptr<Styleable> StyleableBuilder::Build() {
+  return std::move(styleable_);
+}
+
+std::unique_ptr<xml::XmlResource> BuildXmlDom(const StringPiece& str) {
+  std::string input = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
+  input.append(str.data(), str.size());
+  StringInputStream in(input);
+  StdErrDiagnostics diag;
+  std::unique_ptr<xml::XmlResource> doc = xml::Inflate(&in, &diag, Source("test.xml"));
+  CHECK(doc != nullptr) << "failed to parse inline XML string";
+  return doc;
+}
+
+std::unique_ptr<xml::XmlResource> BuildXmlDomForPackageName(IAaptContext* context,
+                                                            const StringPiece& str) {
+  std::unique_ptr<xml::XmlResource> doc = BuildXmlDom(str);
+  doc->file.name.package = context->GetCompilationPackage();
+  return doc;
+}
+
+}  // namespace test
+}  // namespace aapt