First commit of split-select tool

This tool emits a set of rules as JSON for when a Split APK
should match a target device.

Change-Id: I8bfbdfbdb51efcfc645889dd03e1961f16e39645
diff --git a/tools/split-select/SplitDescription.h b/tools/split-select/SplitDescription.h
new file mode 100644
index 0000000..5fcafc8
--- /dev/null
+++ b/tools/split-select/SplitDescription.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef H_ANDROID_SPLIT_SPLIT_DESCRIPTION
+#define H_ANDROID_SPLIT_SPLIT_DESCRIPTION
+
+#include "aapt/ConfigDescription.h"
+#include "Abi.h"
+
+#include <utils/String8.h>
+#include <utils/Vector.h>
+
+namespace split {
+
+struct SplitDescription {
+    SplitDescription();
+    SplitDescription(const SplitDescription&) = default;
+
+    ConfigDescription config;
+    abi::Variant abi;
+
+    int compare(const SplitDescription& rhs) const;
+    inline bool operator<(const SplitDescription& rhs) const;
+    inline bool operator==(const SplitDescription& rhs) const;
+    inline bool operator!=(const SplitDescription& rhs) const;
+
+    bool match(const SplitDescription& o) const;
+    bool isBetterThan(const SplitDescription& o, const SplitDescription& target) const;
+
+    android::String8 toString() const;
+
+    static bool parse(const android::String8& str, SplitDescription* outSplit);
+};
+
+ssize_t parseAbi(const android::Vector<android::String8>& parts, const ssize_t index,
+        SplitDescription* outSplit);
+
+bool SplitDescription::operator<(const SplitDescription& rhs) const {
+    return compare(rhs) < 0;
+}
+
+bool SplitDescription::operator==(const SplitDescription& rhs) const {
+    return compare(rhs) == 0;
+}
+
+bool SplitDescription::operator!=(const SplitDescription& rhs) const {
+    return compare(rhs) != 0;
+}
+
+} // namespace split
+
+#endif // H_ANDROID_SPLIT_SPLIT_DESCRIPTION