Diff: HTTPClient/IHTTPData.h

Revision:

0:bad9495b4215

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HTTPClient/IHTTPData.h	Fri Jul 28 02:23:25 2017 +0000
@@ -0,0 +1,105 @@
+/* IHTTPData.h */
+/* Copyright (C) 2012 mbed.org, MIT License
+ *
+ * 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 IHTTPDATA_H
+#define IHTTPDATA_H
+
+#include <cstring>
+
+using std::size_t;
+
+class IHTTPData
+{
+  protected:
+  /** Get a specific header
+  *
+  */
+  virtual bool getHeader(char* header, size_t maxHeaderLen) { return false; }
+};
+
+///This is a simple interface for HTTP data storage (impl examples are Key/Value Pairs, File, etc...)
+class IHTTPDataOut : public IHTTPData
+{
+protected:
+  friend class HTTPClient;
+  
+  /** Reset stream to its beginning 
+   * Called by the HTTPClient on each new request
+   */
+  virtual void readReset() = 0;
+
+  /** Read a piece of data to be transmitted
+   * @param buf Pointer to the buffer on which to copy the data
+   * @param len Length of the buffer
+   * @param pReadLen Pointer to the variable on which the actual copied data length will be stored
+   */
+  virtual int read(char* buf, size_t len, size_t* pReadLen) = 0;
+  
+  /** Get MIME type
+   * @param type Internet media type from Content-Type header
+   */
+  virtual int getDataType(char* type, size_t maxTypeLen) = 0; //Internet media type for Content-Type header
+  
+  /** Determine whether the HTTP client should chunk the data
+   *  Used for Transfer-Encoding header
+   */
+  virtual bool getIsChunked() = 0;
+  
+  /** If the data is not chunked, get its size
+   *  Used for Content-Length header
+   */
+  virtual size_t getDataLen() = 0;
+
+};
+
+///This is a simple interface for HTTP data storage (impl examples are Key/Value Pairs, File, etc...)
+class IHTTPDataIn : public IHTTPData
+{
+protected:
+  friend class HTTPClient;
+
+  /** Reset stream to its beginning 
+   * Called by the HTTPClient on each new request
+   */
+  virtual void writeReset() = 0;
+
+  /** Write a piece of data transmitted by the server
+   * @param buf Pointer to the buffer from which to copy the data
+   * @param len Length of the buffer
+   */
+  virtual int write(const char* buf, size_t len) = 0;
+
+  /** Set MIME type
+   * @param type Internet media type from Content-Type header
+   */
+  virtual void setDataType(const char* type) = 0;
+
+  /** Determine whether the data is chunked
+   *  Recovered from Transfer-Encoding header
+   */
+  virtual void setIsChunked(bool chunked) = 0;
+  
+  /** If the data is not chunked, set its size
+   * From Content-Length header
+   */
+  virtual void setDataLen(size_t len) = 0;
+
+};
+
+#endif