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backends/networking/http/emscripten/networkreadstream-emscripten.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef BACKENDS_NETWORKING_HTTP_EMSCRIPTEN_NETWORKREADSTREAMEMSCRIPTEN_H
+#define BACKENDS_NETWORKING_HTTP_EMSCRIPTEN_NETWORKREADSTREAMEMSCRIPTEN_H
+
+#ifdef EMSCRIPTEN
+
+#include "backends/networking/http/networkreadstream.h"
+#include <emscripten/fetch.h>
+
+namespace Networking {
+
+class NetworkReadStream; // Forward declaration
+
+class NetworkReadStreamEmscripten : public NetworkReadStream {
+private:
+	emscripten_fetch_attr_t *_emscripten_fetch_attr;
+	emscripten_fetch_t *_emscripten_fetch;
+	const char *_emscripten_fetch_url = nullptr;
+	char **_emscripten_request_headers;
+	bool _success;
+	char *_errorBuffer;
+
+	void resetStream();
+	void setupBufferContents(const byte *buffer, uint32 bufferSize, bool uploading, bool usingPatch, bool post);
+	void setupFormMultipart(const Common::HashMap<Common::String, Common::String> &formFields, const Common::HashMap<Common::String, Common::Path> &formFiles);
+public:
+	NetworkReadStreamEmscripten(const char *url, RequestHeaders *headersList, const Common::String &postFields, bool uploading, bool usingPatch, bool keepAlive, long keepAliveIdle, long keepAliveInterval);
+
+	NetworkReadStreamEmscripten(const char *url, RequestHeaders *headersList, const Common::HashMap<Common::String, Common::String> &formFields, const Common::HashMap<Common::String, Common::Path> &formFiles, bool keepAlive, long keepAliveIdle, long keepAliveInterval);
+
+	NetworkReadStreamEmscripten(const char *url, RequestHeaders *headersList, const byte *buffer, uint32 bufferSize, bool uploading, bool usingPatch, bool post, bool keepAlive, long keepAliveIdle, long keepAliveInterval);
+
+	~NetworkReadStreamEmscripten() override;
+	void initEmscripten(const char *url, RequestHeaders *headersList);
+
+	// NetworkReadStream interface
+	bool reuse(const char *url, RequestHeaders *headersList, const Common::String &postFields, bool uploading = false, bool usingPatch = false) override { return false; }                                                 // no reuse for Emscripten
+	bool reuse(const char *url, RequestHeaders *headersList, const Common::HashMap<Common::String, Common::String> &formFields, const Common::HashMap<Common::String, Common::Path> &formFiles) override { return false; } // no reuse for Emscripten
+	bool reuse(const char *url, RequestHeaders *headersList, const byte *buffer, uint32 bufferSize, bool uploading = false, bool usingPatch = false, bool post = false) override { return false; }                         // no reuse for Emscripten
+
+	bool hasError() const override;
+	const char *getError() const override;
+
+	long httpResponseCode() const override;
+	Common::String currentLocation() const override;
+	Common::HashMap<Common::String, Common::String> responseHeadersMap() const override;
+
+	uint32 read(void *dataPtr, uint32 dataSize) override;
+
+	// Static callback functions
+	static void emscriptenOnSuccess(emscripten_fetch_t *fetch);
+	static void emscriptenOnError(emscripten_fetch_t *fetch);
+	static void emscriptenOnProgress(emscripten_fetch_t *fetch);
+	static void emscriptenOnReadyStateChange(emscripten_fetch_t *fetch);
+	void emscriptenDownloadFinished(bool success);
+};
+
+} // End of namespace Networking
+
+#endif // EMSCRIPTEN
+
+#endif