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lib/PsychicHttp/src/PsychicUploadHandler.h

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+#ifndef PsychicUploadHandler_h
+#define PsychicUploadHandler_h
+
+#include "PsychicCore.h"
+#include "PsychicHttpServer.h"
+#include "PsychicRequest.h"
+#include "PsychicWebHandler.h"
+#include "PsychicWebParameter.h"
+
+//callback definitions
+typedef std::function<esp_err_t(PsychicRequest *request, const String& filename, uint64_t index, uint8_t *data, size_t len, bool final)> PsychicUploadCallback;
+
+/*
+* HANDLER :: Can be attached to any endpoint or as a generic request handler.
+*/
+
+class PsychicUploadHandler : public PsychicWebHandler {
+  protected:
+    PsychicUploadCallback _uploadCallback;
+
+    PsychicRequest *_request;
+
+    String _temp;
+    size_t _parsedLength;
+    uint8_t _multiParseState;
+    String _boundary;
+    uint8_t _boundaryPosition;
+    size_t _itemStartIndex;
+    size_t _itemSize;
+    String _itemName;
+    String _itemFilename;
+    String _itemType;
+    String _itemValue;
+    uint8_t *_itemBuffer;
+    size_t _itemBufferIndex;
+    bool _itemIsFile;
+
+    esp_err_t _basicUploadHandler(PsychicRequest *request);
+    esp_err_t _multipartUploadHandler(PsychicRequest *request);
+
+    void _handleUploadByte(uint8_t data, bool last);
+    void _parseMultipartPostByte(uint8_t data, bool last);
+
+  public:
+    PsychicUploadHandler();
+    ~PsychicUploadHandler();
+
+    bool canHandle(PsychicRequest *request) override;
+    esp_err_t handleRequest(PsychicRequest *request) override;
+
+    PsychicUploadHandler * onUpload(PsychicUploadCallback fn);
+};
+
+enum {
+  EXPECT_BOUNDARY,
+  PARSE_HEADERS,
+  WAIT_FOR_RETURN1,
+  EXPECT_FEED1,
+  EXPECT_DASH1,
+  EXPECT_DASH2,
+  BOUNDARY_OR_DATA,
+  DASH3_OR_RETURN2,
+  EXPECT_FEED2,
+  PARSING_FINISHED,
+  PARSE_ERROR
+};
+
+#endif // PsychicUploadHandler_h