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- //=============================================================================
- // File: message.h
- // Contents: Declarations for DwMessage
- // Maintainer: Doug Sauder <dwsauder@fwb.gulf.net>
- // WWW: http://www.fwb.gulf.net/~dwsauder/mimepp.html
- //
- // Copyright (c) 1996, 1997 Douglas W. Sauder
- // All rights reserved.
- //
- // IN NO EVENT SHALL DOUGLAS W. SAUDER BE LIABLE TO ANY PARTY FOR DIRECT,
- // INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
- // THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF DOUGLAS W. SAUDER
- // HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- //
- // DOUGLAS W. SAUDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT
- // NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- // PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
- // BASIS, AND DOUGLAS W. SAUDER HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
- // SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
- //
- //=============================================================================
-
- #ifndef DW_MESSAGE_H
- #define DW_MESSAGE_H
-
- #ifndef DW_CONFIG_H
- #include <mimelib/config.h>
- #endif
-
- #ifndef DW_ENTITY_H
- #include <mimelib/entity.h>
- #endif
-
- //=============================================================================
- //+ Name DwMessage -- Class representing an RFC-822/MIME message
- //+ Description
- //. {\tt DwMessage} represents an RFC-822/MIME {\it message}.
- //.
- //. A {\it message} contains both a collection of {\it header fields} and
- //. a {\it body}. In the terminology of RFC-2045, the general term for the
- //. headers-body combination is {\it entity}. In MIME++, {\tt DwMessage}
- //. is a direct subclass of {\tt DwEntity}, and therefore contains both
- //. a {\tt DwHeaders} object and a {\tt DwBody} object.
- //.
- //. In the tree (broken-down) representation of message, a {\tt DwMessage}
- //. object is almost always a root node, having child nodes but no parent node.
- //. The child nodes are the {\tt DwHeaders} object and the {\tt DwBody} object
- //. it contains. A {\tt DwMessage} may sometimes be an intermediate node. In
- //. this special case, the parent node is a {\tt DwBody} object of type
- //. "message/*" and the {\tt DwMessage} object represents an encapsulated
- //. message.
- //.
- //. To access the contained {\tt DwHeaders} object, use the inherited member
- //. function {\tt DwEntity::Headers()}. To access the contained {\tt DwBody}
- //. object, use the inherited member function {\tt DwEntity::Body()}.
- //=============================================================================
- // Last modified 1997-08-30
- //+ Noentry ~DwMessage _PrintDebugInfo
-
- class DW_EXPORT DwMessage : public DwEntity {
-
- public:
-
- DwMessage();
- DwMessage(const DwMessage& aMessage);
- DwMessage(const DwString& aStr, DwMessageComponent* aParent=0);
- //. The first constructor is the default constructor, which sets the
- //. {\tt DwMessage} object's string representation to the empty string
- //. and sets its parent to {\tt NULL}.
- //.
- //. The second constructor is the copy constructor, which performs
- //. a deep copy of {\tt aMessage}.
- //. The parent of the new {\tt DwMessage} object is set to {\tt NULL}.
- //.
- //. The third constructor copies {\tt aStr} to the {\tt DwMessage}
- //. object's string representation and sets {\tt aParent} as its parent.
- //. The virtual member function {\tt Parse()} should be called immediately
- //. after this constructor in order to parse the string representation.
-
- virtual ~DwMessage();
-
- const DwMessage& operator = (const DwMessage& aMessage);
- //. This is the assignment operator, which performs a deep copy of
- //. {\tt aMessage}. The parent node of the {\tt DwMessage} object
- //. is not changed.
-
- virtual DwMessageComponent* Clone() const;
- //. This virtual function, inherited from {\tt DwMessageComponent},
- //. creates a new {\tt DwMessage} on the free store that has the same
- //. value as this {\tt DwMessage} object. The basic idea is that of
- //. a ``virtual copy constructor.''
-
- static DwMessage* NewMessage(const DwString& aStr,
- DwMessageComponent* aParent);
- //. Creates a new {\tt DwMessage} object on the free store.
- //. If the static data member {\tt sNewMessage} is {\tt NULL},
- //. this member function will create a new {\tt DwMessage}
- //. and return it. Otherwise, {\tt NewMessage()} will call
- //. the user-supplied function pointed to by {\tt sNewMessage},
- //. which is assumed to return an object from a class derived from
- //. {\tt DwMessage}, and return that object.
-
- //+ Var sNewMessage
- static DwMessage* (*sNewMessage)(const DwString&, DwMessageComponent*);
- //. If {\tt sNewMessage} is not {\tt NULL}, it is assumed to point
- //. to a user supplied function that returns an object from a class
- //. derived from {\tt DwMessage}.
-
- private:
-
- static const char* const sClassName;
-
- public:
-
- virtual void PrintDebugInfo(std::ostream& aStrm, int aDepth=0) const;
- //. This virtual function, inherited from {\tt DwMessageComponent},
- //. prints debugging information about this object to {\tt aStrm}.
- //. It will also call {\tt PrintDebugInfo()} for any of its child
- //. components down to a level of {\tt aDepth}.
- //.
- //. This member function is available only in the debug version of
- //. the library.
-
- protected:
-
- void _PrintDebugInfo(std::ostream& aStrm) const;
-
- };
-
- #endif
-