diff options
Diffstat (limited to 'platform/nacl/geturl_handler.h')
| -rw-r--r-- | platform/nacl/geturl_handler.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/platform/nacl/geturl_handler.h b/platform/nacl/geturl_handler.h new file mode 100644 index 0000000000..44086ae7c1 --- /dev/null +++ b/platform/nacl/geturl_handler.h @@ -0,0 +1,115 @@ +/*************************************************************************/ +/* geturl_handler.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ +#ifndef EXAMPLES_GETURL_GETURL_HANDLER_H_ +#define EXAMPLES_GETURL_GETURL_HANDLER_H_ + +#include "core/ustring.h" +#include "core/vector.h" +#include "ppapi/cpp/completion_callback.h" +#include "ppapi/cpp/url_loader.h" +#include "ppapi/cpp/url_request_info.h" +#include "ppapi/cpp/instance.h" +#include "ppapi/utility/completion_callback_factory.h" + +#define READ_BUFFER_SIZE 32768 + +// GetURLHandler is used to download data from |url|. When download is +// finished or when an error occurs, it posts a message back to the browser +// with the results encoded in the message as a string and self-destroys. +// +// EXAMPLE USAGE: +// GetURLHandler* handler* = GetURLHandler::Create(instance,url); +// handler->Start(); +// +class GetURLHandler { + +public: + + enum Status { + + STATUS_NONE, + STATUS_IN_PROGRESS, + STATUS_COMPLETED, + STATUS_ERROR, + }; + +private: + + Status status; + + // Callback fo the pp::URLLoader::Open(). + // Called by pp::URLLoader when response headers are received or when an + // error occurs (in response to the call of pp::URLLoader::Open()). + // Look at <ppapi/c/ppb_url_loader.h> and + // <ppapi/cpp/url_loader.h> for more information about pp::URLLoader. + void OnOpen(int32_t result); + + // Callback fo the pp::URLLoader::ReadResponseBody(). + // |result| contains the number of bytes read or an error code. + // Appends data from this->buffer_ to this->url_response_body_. + void OnRead(int32_t result); + + // Reads the response body (asynchronously) into this->buffer_. + // OnRead() will be called when bytes are received or when an error occurs. + void ReadBody(); + + // Append data bytes read from the URL onto the internal buffer. Does + // nothing if |num_bytes| is 0. + void AppendDataBytes(const char* buffer, int32_t num_bytes); + + pp::Instance* instance_; // Weak pointer. + String url_; // URL to be downloaded. + pp::URLRequestInfo url_request_; + pp::URLLoader url_loader_; // URLLoader provides an API to download URLs. + char buffer_[READ_BUFFER_SIZE]; // Temporary buffer for reads. + Vector<uint8_t> data; // Contains accumulated downloaded data. + pp::CompletionCallbackFactory<GetURLHandler> cc_factory_; + bool complete; + + GetURLHandler(const GetURLHandler&); + void operator=(const GetURLHandler&); + +public: + // Creates instance of GetURLHandler on the heap. + // GetURLHandler objects shall be created only on the heap (they + // self-destroy when all data is in). + // Initiates page (URL) download. + void Start(); + + Status get_status() const; + Vector<uint8_t> get_data() const; + + int get_bytes_read() const; + + GetURLHandler(pp::Instance* instance_, const String& url); + ~GetURLHandler(); +}; + +#endif // EXAMPLES_GETURL_GETURL_HANDLER_H_ + |