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tdepim/libkmime/kmime_headers.h

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/* -*- c++ -*
kmime_headers.h
KMime, the KDE internet mail/usenet news message library.
Copyright (c) 2001-2002 the KMime authors.
See file AUTHORS for details
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2.0 as
published by the Free Software Foundation.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, US
*/
#ifndef __KMIME_HEADERS_H__
#define __KMIME_HEADERS_H__
// Content:
//
// - header's base class defining the common interface
// - generic base classes for different types of fields
// - incompatible, GStructured-based field classes
// - compatible, GUnstructured-based field classes
#include "kmime_header_parsing.h"
#include <tqstring.h>
#include <tqstrlist.h>
#include <tqstringlist.h>
#include <tqregexp.h>
#include <tqdatetime.h>
#include <tqasciidict.h>
#include <tqmap.h>
#include <tqptrlist.h>
#include <time.h>
#include <kdepimmacros.h>
namespace KMime {
//forward declaration
class Content;
namespace Headers {
enum contentCategory { CCsingle,
CCcontainer,
CCmixedPart,
CCalternativePart };
enum contentEncoding { CE7Bit,
CE8Bit,
CEquPr,
CEbase64,
CEuuenc,
CEbinary };
enum contentDisposition { CDinline,
CDattachment,
CDparallel };
//often used charset
static const TQCString Latin1("ISO-8859-1");
#define mk_trivial_subclass_with_name( subclass, subclassName, baseclass ) \
class subclass : public Generics::baseclass { \
public: \
subclass() : Generics::baseclass() {} \
subclass( Content * p ) : Generics::baseclass( p ) {} \
subclass( Content * p, const TQCString & s ) \
: Generics::baseclass( p ) { from7BitString( s ); } \
subclass( Content * p, const TQString & s, const TQCString & cs ) \
: Generics::baseclass( p ) { fromUnicodeString( s, cs ); } \
~subclass() {} \
\
const char * type() const { return #subclassName; } \
}
#define mk_trivial_subclass( subclass, baseclass ) \
mk_trivial_subclass_with_name( subclass, subclass, baseclass )
#define mk_parsing_subclass_with_name( subclass, subclassName, baseclass ) \
class subclass : public Generics::baseclass { \
public: \
subclass() : Generics::baseclass() {} \
subclass( Content * p ) : Generics::baseclass( p ) {} \
subclass( Content * p, const TQCString & s ) \
: Generics::baseclass( p ) { from7BitString( s ); } \
subclass( Content * p, const TQString & s, const TQCString & cs ) \
: Generics::baseclass( p ) { fromUnicodeString( s, cs ); } \
~subclass() {} \
\
const char * type() const { return #subclassName; } \
protected: \
bool parse( const char* & scursor, const char * const send, bool isCRLF=false ); \
}
#define mk_parsing_subclass( subclass, baseclass ) \
mk_parsing_subclass_with_name( subclass, subclass, baseclass )
//
//
// HEADER'S BASE CLASS. DEFINES THE COMMON INTERFACE
//
//
/** Baseclass of all header-classes. It represents a
header-field as described in RFC-822. */
class KDE_EXPORT Base {
public:
typedef TQPtrList<Base> List;
/** Create an empty header. */
Base() : e_ncCS(0), p_arent(0) {}
/** Create an empty header with a parent-content. */
Base(KMime::Content *parent) : e_ncCS(0), p_arent(parent) {}
/** Destructor */
virtual ~Base() {}
/** Return the parent of this header. */
KMime::Content* parent() { return p_arent; }
/** Set the parent for this header. */
void setParent(KMime::Content *p) { p_arent=p; }
/** Parse the given string. Take care of RFC2047-encoded
strings. A default charset is given. If the last parameter
is true the default charset is used in any case */
virtual void from7BitString(const TQCString&) {}
/** Return the encoded header. The parameter specifies
whether the header-type should be included. */
virtual TQCString as7BitString(bool=true) { return TQCString(); }
/** Return the charset that is used for RFC2047-encoding */
TQCString rfc2047Charset();
/** Set the charset for RFC2047-encoding */
void setRFC2047Charset(const TQCString &cs);
/** Return the default charset */
TQCString defaultCS();
/** Return if the default charset is mandatory */
bool forceCS();
/** Parse the given string and set the charset. */
virtual void fromUnicodeString(const TQString&, const TQCString&) {}
/** Return the decoded content of the header without
the header-type. */
virtual TQString asUnicodeString() { return TQString(); }
/** Delete */
virtual void clear() {}
/** Do we have data? */
virtual bool isEmpty() { return false; }
/** Return the type of this header (e.g. "From") */
virtual const char* type() { return ""; }
/** Check if this header is of type t. */
bool is(const char* t) { return (strcasecmp(t, type())==0); }
/** Check if this header is a MIME header */
bool isMimeHeader() { return (strncasecmp(type(), "Content-", 8)==0); }
/** Check if this header is a X-Header */
bool isXHeader() { return (strncmp(type(), "X-", 2)==0); }
protected:
TQCString typeIntro() { return (TQCString(type())+": "); }
const char *e_ncCS;
Content *p_arent;
};
//
//
// GENERIC BASE CLASSES FOR DIFFERENT TYPES OF FIELDS
//
//
namespace Generics {
/** Abstract base class for unstructured header fields
(e.g. "Subject", "Comment", "Content-description").
Features: Decodes the header according to RFC2047, incl. RFC2231
extensions to encoded-words.
Subclasses need only re-implement @p const @p char* @p type().
A macro to automate this is named
\code
MK_TRIVIAL_GUnstructured_SUBCLASS(classname,headername);
\endcode
The ContentDescription class then reads:
\code
MK_TRIVIAL_GUnstructured_SUBCLASS(ContentDescription,Content-Description);
\endcode
*/
// known issues:
// - uses old decodeRFC2047String function, instead of our own...
class KDE_EXPORT GUnstructured : public Base {
public:
GUnstructured() : Base() {}
GUnstructured( Content * p ) : Base( p ) {}
GUnstructured( Content * p, const TQCString & s )
: Base( p ) { from7BitString(s); }
GUnstructured( Content * p, const TQString & s, const TQCString & cs )
: Base( p ) { fromUnicodeString( s, cs ); }
~GUnstructured() {}
virtual void from7BitString( const TQCString& str );
virtual TQCString as7BitString( bool withHeaderType=true );
virtual void fromUnicodeString( const TQString & str,
const TQCString & suggestedCharset);
virtual TQString asUnicodeString();
virtual void clear() { d_ecoded.truncate(0); }
virtual bool isEmpty() { return (d_ecoded.isEmpty()); }
private:
TQString d_ecoded;
};
/** This is the base class for all structured header fields. It
contains parsing methods for all basic token types found in
rfc2822.
@section Parsing
At the basic level, there are tokens & tspecials (rfc2045),
atoms & specials, quoted-strings, domain-literals (all rfc822) and
encoded-words (rfc2047).
As a special token, we have the comment. It is one of the basic
tokens defined in rfc822, but it's parsing relies in part on the
basic token parsers (e.g. comments may contain encoded-words).
Also, most upper-level parsers (notably those for phrase and
dot-atom) choose to ignore any comment when parsing.
Then there are the real composite tokens, which are made up of one
or more of the basic tokens (and semantically invisible comments):
phrases (rfc822 with rfc2047) and dot-atoms (rfc2822).
This finishes the list of supported token types. Subclasses will
provide support for more higher-level tokens, where necessary,
using these parsers.
@short Base class for structured header fields.
@author Marc Mutz <mutz@kde.org>
*/
class KDE_EXPORT GStructured : public Base {
public:
GStructured() : Base() {}
GStructured( Content * p ) : Base( p ) {}
GStructured( Content * p, const TQCString & s )
: Base( p ) { from7BitString(s); }
GStructured( Content * p, const TQString & s, const TQCString & cs )
: Base( p ) { fromUnicodeString( s, cs ); }
~GStructured() {}
protected:
#if 0
// the assembly squad:
bool writeAtom( char* & dcursor, const char * const dend, const TQString & input );
bool writeAtom( char* & dcursor, const char * const dend,
const QPair<const char*,int> & input );
bool writeToken( char* & dcursor, const char * const dend, const TQString & input );
bool writeToken( char* & dcursor, const char * const dend,
const QPair<const char*int> & input );
bool writeGenericQuotedString( char* & dcursor, const char * const dend,
const TQString & input, bool withCRLF=false );
bool writeComment( char* & dcursor, const char * const dend,
const TQString & input, bool withCRLF=false );
bool writePhrase( char* & dcursor, const char * const dend,
const TQString & input, bool withCRLF=false );
bool writeDotAtom( char* & dcursor, const char * const dend,
const TQString & input, bool withCRLF=false );
#endif
};
class KDE_EXPORT GAddress : public GStructured {
public:
GAddress() : GStructured() {}
GAddress( Content * p ) : GStructured( p ) {}
GAddress( Content * p, const TQCString & s )
: GStructured( p ) { from7BitString(s); }
GAddress( Content * p, const TQString & s, const TQCString & cs )
: GStructured( p ) { fromUnicodeString( s, cs ); }
~GAddress() {}
protected:
};
/** Base class for headers that deal with (possibly multiple)
addresses, but don't allow groups: */
class KDE_EXPORT MailboxList : public GAddress {
public:
MailboxList() : GAddress() {}
MailboxList( Content * p ) : GAddress( p ) {}
MailboxList( Content * p, const TQCString & s )
: GAddress( p ) { from7BitString(s); }
MailboxList( Content * p, const TQString & s, const TQCString & cs )
: GAddress( p ) { fromUnicodeString( s, cs ); }
~MailboxList() {}
protected:
bool parse( const char* & scursor, const char * const send, bool isCRLF=false );
/** The list of mailboxes */
TQValueList<Types::Mailbox> mMailboxList;
};
/** Base class for headers that deal with exactly one mailbox
(e.g. Sender) */
mk_parsing_subclass(SingleMailbox,MailboxList);
/** Base class for headers that deal with (possibly multiple)
addresses, allowing groups. */
class KDE_EXPORT AddressList : public GAddress {
public:
AddressList() : GAddress() {}
AddressList( Content * p ) : GAddress( p ) {}
AddressList( Content * p, const TQCString & s )
: GAddress( p ) { from7BitString(s); }
AddressList( Content * p, const TQString & s, const TQCString & cs )
: GAddress( p ) { fromUnicodeString( s, cs ); }
~AddressList() {}
protected:
bool parse( const char* & scursor, const char * const send, bool isCRLF=false );
/** The list of addresses */
TQValueList<Types::Address> mAddressList;
};
/** Base class for headers which deal with a list of msg-id's */
class KDE_EXPORT GIdent : public GAddress {
public:
GIdent() : GAddress() {}
GIdent( Content * p ) : GAddress( p ) {}
GIdent( Content * p, const TQCString & s )
: GAddress( p ) { from7BitString(s); }
GIdent( Content * p, const TQString & s, const TQCString & cs )
: GAddress( p ) { fromUnicodeString( s, cs ); }
~GIdent() {}
protected:
bool parse( const char* & scursor, const char * const send, bool isCRLF=false );
/** The list of msg-id's */
TQValueList<Types::AddrSpec> mMsgIdList;
};
/** Base class for headers which deal with a list of msg-id's */
mk_parsing_subclass(GSingleIdent,GIdent);
/** Base class for headers which deal with a single atom. */
class KDE_EXPORT GToken : public GStructured {
public:
GToken() : GStructured() {}
GToken( Content * p ) : GStructured( p ) {}
GToken( Content * p, const TQCString & s )
: GStructured( p ) { from7BitString(s); }
GToken( Content * p, const TQString & s, const TQCString & cs )
: GStructured( p ) { fromUnicodeString( s, cs ); }
~GToken() {}
protected:
bool parse( const char* & scursor, const char * const send, bool isCRLF=false );
TQCString mToken;
};
class KDE_EXPORT GPhraseList : public GStructured {
public:
GPhraseList() : GStructured() {}
GPhraseList( Content * p ) : GStructured( p ) {}
GPhraseList( Content * p, const TQCString & s )
: GStructured( p ) { from7BitString(s); }
GPhraseList( Content * p, const TQString & s, const TQCString & cs )
: GStructured( p ) { fromUnicodeString( s, cs ); }
~GPhraseList() {}
protected:
bool parse( const char* & scursor, const char * const send, bool isCRLF=false );
TQStringList mPhraseList;
};
class KDE_EXPORT GDotAtom : public GStructured {
public:
GDotAtom() : GStructured() {}
GDotAtom( Content * p ) : GStructured( p ) {}
GDotAtom( Content * p, const TQCString & s )
: GStructured( p ) { from7BitString(s); }
GDotAtom( Content * p, const TQString & s, const TQCString & cs )
: GStructured( p ) { fromUnicodeString( s, cs ); }
~GDotAtom() {}
protected:
bool parse( const char* & scursor, const char * const send, bool isCRLF=false );
TQString mDotAtom;
};
class KDE_EXPORT GParametrized : public GStructured {
public:
GParametrized() : GStructured() {}
GParametrized( Content * p ) : GStructured( p ) {}
GParametrized( Content * p, const TQCString & s )
: GStructured( p ) { from7BitString(s); }
GParametrized( Content * p, const TQString & s, const TQCString & cs )
: GStructured( p ) { fromUnicodeString( s, cs ); }
~GParametrized() {}
protected:
TQMap<TQString,TQString> mParameterHash;
private:
};
class KDE_EXPORT GContentType : public GParametrized {
public:
GContentType() : GParametrized() {}
GContentType( Content * p ) : GParametrized( p ) {}
GContentType( Content * p, const TQCString & s )
: GParametrized( p ) { from7BitString(s); }
GContentType( Content * p, const TQString & s, const TQCString & cs )
: GParametrized( p ) { fromUnicodeString( s, cs ); }
~GContentType() {}
protected:
bool parse( const char* & scursor, const char * const send, bool isCRLF=false );
TQCString mMimeType;
TQCString mMimeSubType;
};
class KDE_EXPORT GCISTokenWithParameterList : public GParametrized {
public:
GCISTokenWithParameterList() : GParametrized() {}
GCISTokenWithParameterList( Content * p ) : GParametrized( p ) {}
GCISTokenWithParameterList( Content * p, const TQCString & s )
: GParametrized( p ) { from7BitString(s); }
GCISTokenWithParameterList( Content * p, const TQString & s, const TQCString & cs )
: GParametrized( p ) { fromUnicodeString( s, cs ); }
~GCISTokenWithParameterList() {}
protected:
bool parse( const char* & scursor, const char * const send, bool isCRLF=false );
TQCString mToken;
};
} // namespace Generics
//
//
// INCOMPATIBLE, GSTRUCTURED-BASED FIELDS:
//
//
/** Represents the Return-Path header field. */
class KDE_EXPORT ReturnPath : public Generics::GAddress {
public:
ReturnPath() : Generics::GAddress() {}
ReturnPath( Content * p ) : Generics::GAddress( p ) {}
ReturnPath( Content * p, const TQCString & s )
: Generics::GAddress( p ) { from7BitString(s); }
ReturnPath( Content * p, const TQString & s, const TQCString & cs )
: Generics::GAddress( p ) { fromUnicodeString( s, cs ); }
~ReturnPath() {}
const char * type() const { return "Return-Path"; }
protected:
bool parse( const char* & scursor, const char * const send, bool isCRLF=false );
};
#if defined(KMIME_NEW_STYLE_CLASSTREE)
// classes whose names collide with earlier ones:
// GAddress et al.:
// rfc(2)822 headers:
mk_trivial_subclass(From,MailboxList);
mk_trivial_subclass(Sender,SingleMailbox);
mk_trivial_subclass_with_name(ReplyTo,Reply-To,AddressList);
mk_trivial_subclass(Cc,AddressList);
mk_trivial_subclass(Bcc,AddressList);
// usefor headers:
mk_trivial_subclass_with_name(MailCopiesTo,Mail-Copies-To,AddressList);
// GToken:
mk_trivial_subclass_with_name(ContentTransferEncoding,
Content-Transfer-Encoding,GToken);
// GPhraseList:
mk_trivial_subclass(Keywords,GPhraseList);
// GDotAtom:
mk_trivial_subclass_with_name(MIMEVersion,MIME-Version,GDotAtom);
// GIdent:
mk_trivial_subclass_with_name(MessageID,Message-ID,GSingleIdent);
mk_trivial_subclass_with_name(ContentID,Content-ID,GSingleIdent);
mk_trivial_subclass(Supersedes,GSingleIdent);
mk_trivial_subclass_with_name(InReplyTo,In-Reply-To,GIdent);
mk_trivial_subclass(References,GIdent);
// GContentType:
mk_trivial_subclass_with_name(ContentType,ContentType,GContentType);
// GCISTokenWithParameterList:
mk_trivial_subclass_with_name(ContentDisposition,Content-Disposition,
GCISTokenWithParameterList);
#endif
//
//
// COMPATIBLE GUNSTRUCTURED-BASED FIELDS:
//
//
/** Represents an arbitrary header, that can contain
any header-field.
Adds a type over GUnstructured.
@see GUnstructured
*/
class KDE_EXPORT Generic : public Generics::GUnstructured {
public:
Generic() : Generics::GUnstructured(), t_ype(0) {}
Generic(const char *t)
: Generics::GUnstructured(), t_ype(0) { setType(t); }
Generic(const char *t, Content *p)
: Generics::GUnstructured( p ), t_ype(0) { setType(t); }
Generic(const char *t, Content *p, const TQCString &s)
: Generics::GUnstructured( p, s ), t_ype(0) { setType(t); }
Generic(const char *t, Content *p, const TQString &s, const TQCString &cs)
: Generics::GUnstructured( p, s, cs ), t_ype(0) { setType(t); }
~Generic() { delete[] t_ype; }
virtual void clear() { delete[] t_ype; GUnstructured::clear(); }
virtual bool isEmpty() { return (t_ype==0 || GUnstructured::isEmpty()); }
virtual const char* type() { return t_ype; }
void setType(const char *type);
protected:
char *t_ype;
};
/** Represents a "Subject" header */
class KDE_EXPORT Subject : public Generics::GUnstructured {
public:
Subject() : Generics::GUnstructured() {}
Subject( Content * p ) : Generics::GUnstructured( p ) {}
Subject( Content * p, const TQCString & s )
: Generics::GUnstructured( p, s ) {}
Subject( Content * p, const TQString & s, const TQCString & cs )
: Generics::GUnstructured( p, s, cs ) {}
~Subject() {}
virtual const char* type() { return "Subject"; }
bool isReply() {
return ( asUnicodeString().find( TQString("Re:"), 0, false ) == 0 );
}
};
/** Represents a "Organization" header */
class KDE_EXPORT Organization : public Generics::GUnstructured {
public:
Organization() : Generics::GUnstructured() {}
Organization( Content * p ) : Generics::GUnstructured( p ) {}
Organization( Content * p, const TQCString & s )
: Generics::GUnstructured( p, s ) {};
Organization( Content * p, const TQString & s, const TQCString & cs)
: Generics::GUnstructured( p, s, cs ) {}
~Organization() {}
virtual const char* type() { return "Organization"; }
};
//
//
// NOT YET CONVERTED STUFF BELOW:
//
//
/** Represents a "Control" header */
class KDE_EXPORT Control : public Base {
public:
Control() : Base() {}
Control(Content *p) : Base(p) {}
Control(Content *p, const TQCString &s) : Base(p) { from7BitString(s); }
Control(Content *p, const TQString &s) : Base(p) { fromUnicodeString(s, Latin1); }
~Control() {}
virtual void from7BitString(const TQCString &s);
virtual TQCString as7BitString(bool incType=true);
virtual void fromUnicodeString(const TQString &s, const TQCString&);
virtual TQString asUnicodeString();
virtual void clear() { c_trlMsg.truncate(0); }
virtual bool isEmpty() { return (c_trlMsg.isEmpty()); }
virtual const char* type() { return "Control"; }
bool isCancel() { return (c_trlMsg.find("cancel", 0, false)!=-1); }
protected:
TQCString c_trlMsg;
};
/** Represents a "Date" header */
class KDE_EXPORT Date : public Base {
public:
Date() : Base(), t_ime(0) {}
Date(Content *p) : Base(p), t_ime(0) {}
Date(Content *p, time_t t) : Base(p), t_ime(t) {}
Date(Content *p, const TQCString &s) : Base(p) { from7BitString(s); }
Date(Content *p, const TQString &s) : Base(p) { fromUnicodeString(s, Latin1); }
~Date() {}
virtual void from7BitString(const TQCString &s);
virtual TQCString as7BitString(bool incType=true);
virtual void fromUnicodeString(const TQString &s, const TQCString&);
virtual TQString asUnicodeString();
virtual void clear() { t_ime=0; }
virtual bool isEmpty() { return (t_ime==0); }
virtual const char* type() { return "Date"; }
time_t unixTime() { return t_ime; }
void setUnixTime(time_t t) { t_ime=t; }
void setUnixTime() { t_ime=time(0); }
TQDateTime qdt();
int ageInDays();
protected:
time_t t_ime;
};
/** Represents a "Newsgroups" header */
class KDE_EXPORT Newsgroups : public Base {
public:
Newsgroups() : Base() {}
Newsgroups(Content *p) : Base(p) {}
Newsgroups(Content *p, const TQCString &s) : Base(p) { from7BitString(s); }
Newsgroups(Content *p, const TQString &s) : Base(p) { fromUnicodeString(s, Latin1); }
~Newsgroups() {}
virtual void from7BitString(const TQCString &s);
virtual TQCString as7BitString(bool incType=true);
virtual void fromUnicodeString(const TQString &s, const TQCString&);
virtual TQString asUnicodeString();
virtual void clear() { g_roups.resize(0); }
virtual bool isEmpty() { return g_roups.isEmpty(); }
virtual const char* type() { return "Newsgroups"; }
TQCString firstGroup();
bool isCrossposted() { return ( g_roups.find(',')>-1 ); }
TQStringList getGroups();
protected:
TQCString g_roups;
};
/** Represents a "Followup-To" header */
class KDE_EXPORT FollowUpTo : public Newsgroups {
public:
FollowUpTo() : Newsgroups() {}
FollowUpTo(Content *p) : Newsgroups(p) {}
FollowUpTo(Content *p, const TQCString &s) : Newsgroups(p,s) {}
FollowUpTo(Content *p, const TQString &s) : Newsgroups(p,s) {}
~FollowUpTo() {}
virtual const char* type() { return "Followup-To"; }
};
/** Represents a "Lines" header */
class KDE_EXPORT Lines : public Base {
public:
Lines() : Base(),l_ines(-1) {}
Lines(Content *p) : Base(p),l_ines(-1) {}
Lines(Content *p, unsigned int i) : Base(p),l_ines(i) {}
Lines(Content *p, const TQCString &s) : Base(p) { from7BitString(s); }
Lines(Content *p, const TQString &s) : Base(p) { fromUnicodeString(s, Latin1); }
~Lines() {}
virtual void from7BitString(const TQCString &s);
virtual TQCString as7BitString(bool incType=true);
virtual void fromUnicodeString(const TQString &s, const TQCString&);
virtual TQString asUnicodeString();
virtual void clear() { l_ines=-1; }
virtual bool isEmpty() { return (l_ines==-1); }
virtual const char* type() { return "Lines"; }
int numberOfLines() { return l_ines; }
void setNumberOfLines(int i) { l_ines=i; }
protected:
int l_ines;
};
/** Represents a "User-Agent" header */
class KDE_EXPORT UserAgent : public Base {
public:
UserAgent() : Base() {}
UserAgent(Content *p) : Base(p) {}
UserAgent(Content *p, const TQCString &s) : Base(p) { from7BitString(s); }
UserAgent(Content *p, const TQString &s) : Base(p) { fromUnicodeString(s, Latin1); }
~UserAgent() {}
virtual void from7BitString(const TQCString &s);
virtual TQCString as7BitString(bool incType=true);
virtual void fromUnicodeString(const TQString &s, const TQCString&);
virtual TQString asUnicodeString();
virtual void clear() { u_agent.resize(0); }
virtual bool isEmpty() { return (u_agent.isEmpty()); }
virtual const char* type() { return "User-Agent"; }
protected:
TQCString u_agent;
};
#if !defined(KMIME_NEW_STYLE_CLASSTREE)
#include "kmime_headers_obs.h"
#endif
} //namespace Headers
#if 0
typedef Headers::Base* (*headerCreator)(void);
/** This is a factory for KMime::Headers. You can create new header
objects by type with @ref create and @ref upgrade an existing
@ref Headers::Generic to a specialized header object.
If you are a header class author, you can register your class
(let's call it Foo) so:
<pre>
</pre>
@short Factory for KMime::Headers
@author Marc Mutz <mutz@kde.org>
@see KMime::Headers::Base KMime::Headers::Generic
*/
class HeaderFactory : public TQAsciiDict<headerCreator>
{
private:
HeaderFactory();
~HeaderFactory() {}
static QAsciiDict
public:
/** Create a new header object of type @p aType, or a fitting
generic substitute, if available and known
*/
static Headers::Base* create( const char* aType )
{
if (!s_elf)
s_elf = new HeaderFactory;
headerCreator * hc = (*s_elf)[aType];
if ( !hc )
return 0;
else
return (*hc)();
}
/** This is a wrapper around the above function, provided for
convenience. It differs from the above only in what arguments it
takes.
*/
static Headers::Base* create( const TQCString& aType )
{
return create( aType.data() );
}
/** Consume @p aType and build a header object that corresponds to
the type that @p aType->type() returns.
@param aType generic header to upgrade. This will be deleted
if necessary, so don't use references to it after
calling this function.
@return A corresponding header object (if available), or a generic
object for this kind of header (if known), or @p aType (else).
@see Headers::Generic create
*/
static Headers::Base* upgrade( Headers::Generic* aType ) { (void)aType; return new Headers::Base; }
};
#endif
} //namespace KMime
#endif // __KMIME_HEADERS_H__
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