src/mojo/examples/content_handler_demo/content_handler_demo.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <stdio.h>
   6
   7 #include "mojo/public/cpp/application/application_delegate.h"
   8 #include "mojo/public/cpp/application/application_impl.h"
   9 #include "mojo/public/cpp/application/interface_factory_impl.h"
  10 #include "mojo/services/public/interfaces/content_handler/content_handler.mojom.h"
  11
  12 namespace mojo {
  13 namespace examples {
  14
  15 class ContentHandlerApp;
  16
  17 class ContentHandlerImpl : public InterfaceImpl<ContentHandler> {
  18  public:
  19   explicit ContentHandlerImpl(ContentHandlerApp* content_handler_app)
  20       : content_handler_app_(content_handler_app) {
  21   }
  22   virtual ~ContentHandlerImpl() {}
  23
  24  private:
  25   virtual void OnConnect(const mojo::String& url,
  26                          URLResponsePtr content,
  27                          ServiceProviderPtr service_provider) MOJO_OVERRIDE;
  28
  29   ContentHandlerApp* content_handler_app_;
  30 };
  31
  32 class ContentHandlerApp : public ApplicationDelegate {
  33  public:
  34   ContentHandlerApp() : content_handler_factory_(this) {
  35   }
  36
  37   virtual void Initialize(ApplicationImpl* app) MOJO_OVERRIDE {
  38   }
  39
  40   virtual bool ConfigureIncomingConnection(ApplicationConnection* connection)
  41       MOJO_OVERRIDE {
  42     connection->AddService(&content_handler_factory_);
  43     return true;
  44   }
  45
  46   void PrintResponse(ScopedDataPipeConsumerHandle body) const {
  47     for (;;) {
  48       char buf[512];
  49       uint32_t num_bytes = sizeof(buf);
  50       MojoResult result = ReadDataRaw(body.get(), buf, &num_bytes,
  51                                       MOJO_READ_DATA_FLAG_NONE);
  52       if (result == MOJO_RESULT_SHOULD_WAIT) {
  53         Wait(body.get(),
  54              MOJO_HANDLE_SIGNAL_READABLE,
  55              MOJO_DEADLINE_INDEFINITE);
  56       } else if (result == MOJO_RESULT_OK) {
  57         if (fwrite(buf, num_bytes, 1, stdout) != 1) {
  58           printf("\nUnexpected error writing to file\n");
  59           break;
  60         }
  61       } else {
  62         break;
  63       }
  64
  65       printf("\n>>> EOF <<<\n");
  66     }
  67   }
  68
  69  private:
  70   InterfaceFactoryImplWithContext<ContentHandlerImpl,
  71                                   ContentHandlerApp> content_handler_factory_;
  72 };
  73
  74 void ContentHandlerImpl::OnConnect(const mojo::String& url,
  75                                    URLResponsePtr content,
  76                                    ServiceProviderPtr service_provider) {
  77   printf("ContentHandler::OnConnect - url:%s - body follows\n\n",
  78          url.To<std::string>().c_str());
  79   content_handler_app_->PrintResponse(content->body.Pass());
  80 }
  81
  82 }  // namespace examples
  83
  84 // static
  85 ApplicationDelegate* ApplicationDelegate::Create() {
  86   return new examples::ContentHandlerApp();
  87 }
  88
  89 }  // namespace mojo