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

1 files changed, 72 insertions, 0 deletions

diff --git a/tools/aapt2/io/StringInputStream_test.cpp b/tools/aapt2/io/StringInputStream_test.cpp
new file mode 100644
index 000000000000..cc57bc498313
--- /dev/null
+++ b/tools/aapt2/io/StringInputStream_test.cpp
@@ -0,0 +1,72 @@
+/*
+ * 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 "io/StringInputStream.h"
+
+#include "test/Test.h"
+
+using ::android::StringPiece;
+using ::testing::Eq;
+using ::testing::NotNull;
+using ::testing::StrEq;
+
+namespace aapt {
+namespace io {
+
+TEST(StringInputStreamTest, OneCallToNextShouldReturnEntireBuffer) {
+  constexpr const size_t kCount = 1000;
+  std::string input;
+  input.resize(kCount, 0x7f);
+  input[0] = 0x00;
+  input[kCount - 1] = 0xff;
+  StringInputStream in(input);
+
+  const char* buffer;
+  size_t size;
+  ASSERT_TRUE(in.Next(reinterpret_cast<const void**>(&buffer), &size));
+  ASSERT_THAT(size, Eq(kCount));
+  ASSERT_THAT(buffer, NotNull());
+
+  EXPECT_THAT(buffer[0], Eq(0x00));
+  EXPECT_THAT(buffer[kCount - 1], Eq('\xff'));
+
+  EXPECT_FALSE(in.Next(reinterpret_cast<const void**>(&buffer), &size));
+  EXPECT_FALSE(in.HadError());
+}
+
+TEST(StringInputStreamTest, BackUp) {
+  std::string input = "hello this is a string";
+  StringInputStream in(input);
+
+  const char* buffer;
+  size_t size;
+  ASSERT_TRUE(in.Next(reinterpret_cast<const void**>(&buffer), &size));
+  ASSERT_THAT(size, Eq(input.size()));
+  ASSERT_THAT(buffer, NotNull());
+  EXPECT_THAT(in.ByteCount(), Eq(input.size()));
+
+  in.BackUp(6u);
+  EXPECT_THAT(in.ByteCount(), Eq(input.size() - 6u));
+
+  ASSERT_TRUE(in.Next(reinterpret_cast<const void**>(&buffer), &size));
+  ASSERT_THAT(size, Eq(6u));
+  ASSERT_THAT(buffer, NotNull());
+  ASSERT_THAT(buffer, StrEq("string"));
+  EXPECT_THAT(in.ByteCount(), Eq(input.size()));
+}
+
+}  // namespace io
+}  // namespace aapt