PFHeader
==================

A header is list of <name>: <value> strings, delimited with \\r\\n sequences.

.. cpp:function:: void addField(const std::string& fieldName, const std::string& fieldValue, bool start = false)

	:param fieldName: Field name
	:param fieldValue: Field value 
	:param start: true, if the field must be added to the list head
	:description: Add a new field. 

.. cpp:function:: unsigned int removeFields(const std::string& fieldName, bool exact)

	:param fieldName: Name of the fields to remove 
	:param exact: Set to false to remove the fields with names that start from fieldName.
	:description: Removes the fields with specified name and returns the number of deleted items. 

.. cpp:function:: std::vector<PFHeaderField*> getFields()

	:description: Returns all fields as an array.

.. cpp:function:: PFHeaderField* findFirstField(const std::string& fieldName)

	:description: Returns a field with specified name, or NULL if it doesn't exist.

.. cpp:function:: std::vector<PFHeaderField*> findFields(const std::string& fieldName, bool exact)

	:param fieldName: Field name 
	:param exact: Set to false to find the fields with names that start from fieldName.
	:description: Returns the fields with specified name as an array. 

.. cpp:function:: unsigned int countFields(const std::string& fieldName)

	:description: Returns the number of fields with specified name.

.. cpp:function:: unsigned int size()

	:description: Returns the number of fields in header.

.. cpp:function:: PFHeaderField* getField(int index)

	:description: Returns a field by its index.

.. cpp:function:: void clear()

	:description: Removes all fields from header.

.. cpp:function:: bool empty()

	:description: Returns true if the header doesn't contain fields.