1 files changed, 69 insertions, 0 deletions
diff --git a/source/HTTPServer/EnvelopeParser.h b/source/HTTPServer/EnvelopeParser.h
new file mode 100644
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+++ b/source/HTTPServer/EnvelopeParser.h
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+
+// EnvelopeParser.h
+
+// Declares the cEnvelopeParser class representing a parser for RFC-822 envelope headers, used both in HTTP and in MIME
+
+
+
+
+
+#pragma once
+
+
+
+
+
+class cEnvelopeParser
+{
+public:
+	class cCallbacks
+	{
+	public:
+		/// Called when a full header line is parsed
+		virtual void OnHeaderLine(const AString & a_Key, const AString & a_Value) = 0;
+	} ;
+	
+	
+	cEnvelopeParser(cCallbacks & a_Callbacks);
+	
+	/** Parses the incoming data.
+	Returns the number of bytes consumed from the input. The bytes not consumed are not part of the envelope header
+	*/
+	int Parse(const char * a_Data, int a_Size);
+	
+	/// Makes the parser forget everything parsed so far, so that it can be reused for parsing another datastream
+	void Reset(void);
+	
+	/// Returns true if more input is expected for the envelope header
+	bool IsInHeaders(void) const { return m_IsInHeaders; }
+	
+	/// Sets the IsInHeaders flag; used by cMultipartParser to simplify the parser initial conditions
+	void SetIsInHeaders(bool a_IsInHeaders) { m_IsInHeaders = a_IsInHeaders; }
+	
+public:
+	/// Callbacks to call for the various events
+	cCallbacks & m_Callbacks;
+	
+	/// Set to true while the parser is still parsing the envelope headers. Once set to true, the parser will not consume any more data.
+	bool m_IsInHeaders;
+	
+	/// Buffer for the incoming data until it is parsed
+	AString m_IncomingData;
+	
+	/// Holds the last parsed key; used for line-wrapped values
+	AString m_LastKey;
+	
+	/// Holds the last parsed value; used for line-wrapped values
+	AString m_LastValue;
+
+
+	/// Notifies the callback of the key/value stored in m_LastKey/m_LastValue, then erases them
+	void NotifyLast(void);
+	
+	/// Parses one line of header data. Returns true if successful
+	bool ParseLine(const char * a_Data, size_t a_Size);
+} ;
+
+
+
+