1 files changed, 84 insertions, 0 deletions
diff --git a/automotive/can/1.0/default/libnl++/Attributes.cpp b/automotive/can/1.0/default/libnl++/Attributes.cpp
new file mode 100644
index 0000000000..620f57b2f6
--- /dev/null
+++ b/automotive/can/1.0/default/libnl++/Attributes.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2020 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 <libnl++/Attributes.h>
+
+namespace android::nl {
+
+Attributes::Attributes() {}
+
+Attributes::Attributes(Buffer<nlattr> buffer) : Buffer<nlattr>(buffer) {}
+
+const Attributes::Index& Attributes::index() const {
+    if (mIndex.has_value()) return *mIndex;
+
+    mIndex = Index();
+    auto& index = *mIndex;
+
+    for (auto attr : static_cast<Buffer<nlattr>>(*this)) {
+        index.emplace(attr->nla_type, attr);
+    }
+
+    return index;
+}
+
+bool Attributes::contains(nlattrtype_t attrtype) const {
+    return index().count(attrtype) > 0;
+}
+
+/* Parser specializations for selected types (more to come if necessary). */
+
+template <>
+Attributes Attributes::parse(Buffer<nlattr> buf) {
+    return buf.data<nlattr>();
+}
+
+template <>
+std::string Attributes::parse(Buffer<nlattr> buf) {
+    const auto rawString = buf.data<char>().getRaw();
+    std::string str(rawString.ptr(), rawString.len());
+
+    str.erase(std::find(str.begin(), str.end(), '\0'), str.end());
+
+    return str;
+}
+
+template <typename T>
+static T parseUnsigned(Buffer<nlattr> buf) {
+    return buf.data<T>().copyFirst();
+}
+
+template <>
+uint8_t Attributes::parse(Buffer<nlattr> buf) {
+    return parseUnsigned<uint8_t>(buf);
+}
+
+template <>
+uint16_t Attributes::parse(Buffer<nlattr> buf) {
+    return parseUnsigned<uint16_t>(buf);
+}
+
+template <>
+uint32_t Attributes::parse(Buffer<nlattr> buf) {
+    return parseUnsigned<uint32_t>(buf);
+}
+
+template <>
+uint64_t Attributes::parse(Buffer<nlattr> buf) {
+    return parseUnsigned<uint64_t>(buf);
+}
+
+}  // namespace android::nl