Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/conformance/conformance_cpp.cc

-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <errno.h>
-#include <stdarg.h>
-#include <unistd.h>
-
-#include "conformance.pb.h"
-#include <google/protobuf/util/json_util.h>
-#include <google/protobuf/util/type_resolver_util.h>
-
-using conformance::ConformanceRequest;
-using conformance::ConformanceResponse;
-using conformance::TestAllTypes;
-using google::protobuf::Descriptor;
-using google::protobuf::DescriptorPool;
-using google::protobuf::internal::scoped_ptr;
-using google::protobuf::util::BinaryToJsonString;
-using google::protobuf::util::JsonToBinaryString;
-using google::protobuf::util::NewTypeResolverForDescriptorPool;
-using google::protobuf::util::Status;
-using google::protobuf::util::TypeResolver;
-using std::string;
-
-static const char kTypeUrlPrefix[] = "type.googleapis.com";
-
-static string GetTypeUrl(const Descriptor* message) {
-  return string(kTypeUrlPrefix) + "/" + message->full_name();
-}
-
-int test_count = 0;
-bool verbose = false;
-TypeResolver* type_resolver;
-string* type_url;
-
-
-bool CheckedRead(int fd, void *buf, size_t len) {
-  size_t ofs = 0;
-  while (len > 0) {
-    ssize_t bytes_read = read(fd, (char*)buf + ofs, len);
-
-    if (bytes_read == 0) return false;
-
-    if (bytes_read < 0) {
-      GOOGLE_LOG(FATAL) << "Error reading from test runner: " <<  strerror(errno);
-    }
-
-    len -= bytes_read;
-    ofs += bytes_read;
-  }
-
-  return true;
-}
-
-void CheckedWrite(int fd, const void *buf, size_t len) {
-  if (write(fd, buf, len) != len) {
-    GOOGLE_LOG(FATAL) << "Error writing to test runner: " << strerror(errno);
-  }
-}
-
-void DoTest(const ConformanceRequest& request, ConformanceResponse* response) {
-  TestAllTypes test_message;
-
-  switch (request.payload_case()) {
-    case ConformanceRequest::kProtobufPayload:
-      if (!test_message.ParseFromString(request.protobuf_payload())) {
-        // Getting parse details would involve something like:
-        //   http://stackoverflow.com/questions/22121922/how-can-i-get-more-details-about-errors-generated-during-protobuf-parsing-c
-        response->set_parse_error("Parse error (no more details available).");
-        return;
-      }
-      break;
-
-    case ConformanceRequest::kJsonPayload: {
-      string proto_binary;
-      Status status = JsonToBinaryString(type_resolver, *type_url,
-                                         request.json_payload(), &proto_binary);
-      if (!status.ok()) {
-        response->set_parse_error(string("Parse error: ") +
-                                  status.error_message().as_string());
-        return;
-      }
-
-      GOOGLE_CHECK(test_message.ParseFromString(proto_binary));
-      break;
-    }
-
-    case ConformanceRequest::PAYLOAD_NOT_SET:
-      GOOGLE_LOG(FATAL) << "Request didn't have payload.";
-      break;
-  }
-
-  switch (request.requested_output_format()) {
-    case conformance::UNSPECIFIED:
-      GOOGLE_LOG(FATAL) << "Unspecified output format";
-      break;
-
-    case conformance::PROTOBUF:
-      GOOGLE_CHECK(
-          test_message.SerializeToString(response->mutable_protobuf_payload()));
-      break;
-
-    case conformance::JSON: {
-      string proto_binary;
-      GOOGLE_CHECK(test_message.SerializeToString(&proto_binary));
-      Status status = BinaryToJsonString(type_resolver, *type_url, proto_binary,
-                                         response->mutable_json_payload());
-      GOOGLE_CHECK(status.ok());
-      break;
-    }
-  }
-}
-
-bool DoTestIo() {
-  string serialized_input;
-  string serialized_output;
-  ConformanceRequest request;
-  ConformanceResponse response;
-  uint32_t bytes;
-
-  if (!CheckedRead(STDIN_FILENO, &bytes, sizeof(uint32_t))) {
-    // EOF.
-    return false;
-  }
-
-  serialized_input.resize(bytes);
-
-  if (!CheckedRead(STDIN_FILENO, (char*)serialized_input.c_str(), bytes)) {
-    GOOGLE_LOG(ERROR) << "Unexpected EOF on stdin. " << strerror(errno);
-  }
-
-  if (!request.ParseFromString(serialized_input)) {
-    GOOGLE_LOG(FATAL) << "Parse of ConformanceRequest proto failed.";
-    return false;
-  }
-
-  DoTest(request, &response);
-
-  response.SerializeToString(&serialized_output);
-
-  bytes = serialized_output.size();
-  CheckedWrite(STDOUT_FILENO, &bytes, sizeof(uint32_t));
-  CheckedWrite(STDOUT_FILENO, serialized_output.c_str(), bytes);
-
-  if (verbose) {
-    fprintf(stderr, "conformance-cpp: request=%s, response=%s\n",
-            request.ShortDebugString().c_str(),
-            response.ShortDebugString().c_str());
-  }
-
-  test_count++;
-
-  return true;
-}
-
-int main() {
-  type_resolver = NewTypeResolverForDescriptorPool(
-      kTypeUrlPrefix, DescriptorPool::generated_pool());
-  type_url = new string(GetTypeUrl(TestAllTypes::descriptor()));
-  while (1) {
-    if (!DoTestIo()) {
-      fprintf(stderr, "conformance-cpp: received EOF from test runner "
-                      "after %d tests, exiting\n", test_count);
-      return 0;
-    }
-  }
-}