1 files changed, 200 insertions, 0 deletions
diff --git a/tools/streaming_proto/cpp/main.cpp b/tools/streaming_proto/cpp/main.cpp
new file mode 100644
index 000000000000..d6b9d81137ac
--- /dev/null
+++ b/tools/streaming_proto/cpp/main.cpp
@@ -0,0 +1,200 @@
+#include "Errors.h"
+#include "stream_proto_utils.h"
+#include "string_utils.h"
+
+#include <iomanip>
+#include <iostream>
+#include <sstream>
+
+using namespace android::stream_proto;
+using namespace google::protobuf::io;
+using namespace std;
+
+const bool GENERATE_MAPPING = true;
+
+static string
+make_filename(const FileDescriptorProto& file_descriptor)
+{
+    return file_descriptor.name() + ".h";
+}
+
+static void
+write_enum(stringstream& text, const EnumDescriptorProto& enu, const string& indent)
+{
+    const int N = enu.value_size();
+    text << indent << "// enum " << enu.name() << endl;
+    for (int i=0; i<N; i++) {
+        const EnumValueDescriptorProto& value = enu.value(i);
+        text << indent << "const int "
+                << make_constant_name(value.name())
+                << " = " << value.number() << ";" << endl;
+    }
+
+    if (GENERATE_MAPPING) {
+        string name = make_constant_name(enu.name());
+        string prefix = name + "_";
+        text << indent << "const int _ENUM_" << name << "_COUNT = " << N << ";" << endl;
+        text << indent << "const char* _ENUM_" << name << "_NAMES[" << N << "] = {" << endl;
+        for (int i=0; i<N; i++) {
+            text << indent << INDENT << "\"" << stripPrefix(enu.value(i).name(), prefix) << "\"," << endl;
+        }
+        text << indent << "};" << endl;
+        text << indent << "const int _ENUM_" << name << "_VALUES[" << N << "] = {" << endl;
+        for (int i=0; i<N; i++) {
+            text << indent << INDENT << make_constant_name(enu.value(i).name()) << "," << endl;
+        }
+        text << indent << "};" << endl;
+    }
+
+    text << endl;
+}
+
+static void
+write_field(stringstream& text, const FieldDescriptorProto& field, const string& indent)
+{
+    string optional_comment = field.label() == FieldDescriptorProto::LABEL_OPTIONAL
+            ? "optional " : "";
+    string repeated_comment = field.label() == FieldDescriptorProto::LABEL_REPEATED
+            ? "repeated " : "";
+    string proto_type = get_proto_type(field);
+    string packed_comment = field.options().packed()
+            ? " [packed=true]" : "";
+    text << indent << "// " << optional_comment << repeated_comment << proto_type << ' '
+            << field.name() << " = " << field.number() << packed_comment << ';' << endl;
+
+    text << indent << "const uint64_t " << make_constant_name(field.name()) << " = 0x";
+
+    ios::fmtflags fmt(text.flags());
+    text << setfill('0') << setw(16) << hex << get_field_id(field);
+    text.flags(fmt);
+
+    text << "LL;" << endl;
+
+    text << endl;
+}
+
+static void
+write_message(stringstream& text, const DescriptorProto& message, const string& indent)
+{
+    int N;
+    const string indented = indent + INDENT;
+
+    text << indent << "// message " << message.name() << endl;
+    text << indent << "namespace " << message.name() << " {" << endl;
+
+    // Enums
+    N = message.enum_type_size();
+    for (int i=0; i<N; i++) {
+        write_enum(text, message.enum_type(i), indented);
+    }
+
+    // Nested classes
+    N = message.nested_type_size();
+    for (int i=0; i<N; i++) {
+        write_message(text, message.nested_type(i), indented);
+    }
+
+    // Fields
+    N = message.field_size();
+    for (int i=0; i<N; i++) {
+        write_field(text, message.field(i), indented);
+    }
+
+    if (GENERATE_MAPPING) {
+        N = message.field_size();
+        text << indented << "const int _FIELD_COUNT = " << N << ";" << endl;
+        text << indented << "const char* _FIELD_NAMES[" << N << "] = {" << endl;
+        for (int i=0; i<N; i++) {
+            text << indented << INDENT << "\"" << message.field(i).name() << "\"," << endl;
+        }
+        text << indented << "};" << endl;
+        text << indented << "const uint64_t _FIELD_IDS[" << N << "] = {" << endl;
+        for (int i=0; i<N; i++) {
+            text << indented << INDENT << make_constant_name(message.field(i).name()) << "," << endl;
+        }
+        text << indented << "};" << endl << endl;
+    }
+
+    text << indent << "} //" << message.name() << endl;
+    text << endl;
+}
+
+static void
+write_header_file(CodeGeneratorResponse* response, const FileDescriptorProto& file_descriptor)
+{
+    stringstream text;
+
+    text << "// Generated by protoc-gen-cppstream. DO NOT MODIFY." << endl;
+    text << "// source: " << file_descriptor.name() << endl << endl;
+
+    string header = "ANDROID_" + replace_string(file_descriptor.name(), '/', '_');
+    header = replace_string(header, '.', '_') + "_stream_h";
+    header = make_constant_name(header);
+
+    text << "#ifndef " << header << endl;
+    text << "#define " << header << endl;
+    text << endl;
+
+    vector<string> namespaces = split(file_descriptor.package(), '.');
+    for (vector<string>::iterator it = namespaces.begin(); it != namespaces.end(); it++) {
+        text << "namespace " << *it << " {" << endl;
+    }
+    text << endl;
+
+    size_t N;
+    N = file_descriptor.enum_type_size();
+    for (size_t i=0; i<N; i++) {
+        write_enum(text, file_descriptor.enum_type(i), "");
+    }
+
+    N = file_descriptor.message_type_size();
+    for (size_t i=0; i<N; i++) {
+        write_message(text, file_descriptor.message_type(i), "");
+    }
+
+    for (vector<string>::iterator it = namespaces.begin(); it != namespaces.end(); it++) {
+        text << "} // " << *it << endl;
+    }
+
+    text << endl;
+    text << "#endif // " << header << endl;
+
+    CodeGeneratorResponse::File* file_response = response->add_file();
+    file_response->set_name(make_filename(file_descriptor));
+    file_response->set_content(text.str());
+}
+
+int main(int argc, char const *argv[])
+{
+    (void)argc;
+    (void)argv;
+
+    GOOGLE_PROTOBUF_VERIFY_VERSION;
+
+    CodeGeneratorRequest request;
+    CodeGeneratorResponse response;
+
+    // Read the request
+    request.ParseFromIstream(&cin);
+
+    // Build the files we need.
+    const int N = request.proto_file_size();
+    for (int i=0; i<N; i++) {
+        const FileDescriptorProto& file_descriptor = request.proto_file(i);
+        if (should_generate_for_file(request, file_descriptor.name())) {
+            write_header_file(&response, file_descriptor);
+        }
+    }
+
+    // If we had errors, don't write the response. Print the errors and exit.
+    if (ERRORS.HasErrors()) {
+        ERRORS.Print();
+        return 1;
+    }
+
+    // If we didn't have errors, write the response and exit happily.
+    response.SerializeToOstream(&cout);
+
+    /* code */
+    return 0;
+}