Mail::Message::Replace::MailHeader(3)

NAME
Mail::Message::Replace::MailHeader - fake Mail::Header

INHERITANCE
 Mail::Message::Replace::MailHeader
   is a Mail::Message::Head::Complete
   is a Mail::Message::Head
   is a Mail::Reporter

SYNOPSIS
 !!! ALPHA CODE !!!

 # change
 use Mail::Internet;
 use Mail::Header;
 # into
 use Mail::Message::Replace::MailInternet;
 # in existing code, and the code should still work, but
 # with the Mail::Message features.

DESCRIPTION
This module is a wrapper around a Mail::Message::Head::Complete, which simulates a Mail::Header object. The name-space of that module is hijacked and many methods are added.

Most methods will work without any change, but you should test your software again. Small changes have been made to fold_length(), header_hashref().

Extends "DESCRIPTION" in Mail::Message::Head::Complete.

OVERLOADED
Extends "OVERLOADED" in Mail::Message::Head::Complete.

overload: ""
    Inherited, see "OVERLOADED" in Mail::Message::Head

overload: bool
    Inherited, see "OVERLOADED" in Mail::Message::Head

METHODS
Extends "METHODS" in Mail::Message::Head::Complete.

  Constructors
Extends "Constructors" in Mail::Message::Head::Complete.

Mail::Message::Replace::MailHeader->build( [PAIR|$field], ... )
    Inherited, see "Constructors" in Mail::Message::Head::Complete

$obj->clone( [@names|ARRAY|Regexps] )
    Inherited, see "Constructors" in Mail::Message::Head::Complete

Mail::Message::Replace::MailHeader->new( [$arg], %options )
    The $arg is an array with header lines.

     -Option    --Defined in         --Default
      FoldLength                       79
      MailFrom                         'KEEP'
      Modify                           <false>
      field_type  Mail::Message::Head  Mail::Message::Field::Fast
      log         Mail::Reporter       'WARNINGS'
      message     Mail::Message::Head  undef
      modified    Mail::Message::Head  <false>
      trace       Mail::Reporter       'WARNINGS'

    FoldLength => INTEGER
    MailFrom => 'IGNORE'|'ERROR'|'COERCE'|'KEEP'
        How to handle the "From " lines. See mail_from().

    Modify => BOOLEAN
        Reformat all header lines when they come in: change the folding.

    field_type => CLASS
    log => LEVEL
    message => MESSAGE
    modified => BOOLEAN
    trace => LEVEL

  The header
Extends "The header" in Mail::Message::Head::Complete.

$obj->isDelayed()
    Inherited, see "The header" in Mail::Message::Head

$obj->isEmpty()
    Inherited, see "The header" in Mail::Message::Head

$obj->isModified()
    Inherited, see "The header" in Mail::Message::Head

$obj->knownNames()
    Inherited, see "The header" in Mail::Message::Head

$obj->message( [$message] )
    Inherited, see "The header" in Mail::Message::Head

$obj->modified( [BOOLEAN] )
    Inherited, see "The header" in Mail::Message::Head

$obj->nrLines()
    Inherited, see "The header" in Mail::Message::Head::Complete

$obj->orderedFields()
    Inherited, see "The header" in Mail::Message::Head

$obj->size()
    Inherited, see "The header" in Mail::Message::Head::Complete

$obj->wrap($integer)
    Inherited, see "The header" in Mail::Message::Head::Complete

  Access to the header
Extends "Access to the header" in Mail::Message::Head::Complete.

$obj->add( $line, [$index] )
    Add a header line, which simply calls Mail::Message::Head::add() on the header for the specified $line. The $index is ignored, the unfolded body of the field is returned.

$obj->addListGroup($object)
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->addResentGroup($resent_group|$data)
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->addSpamGroup($object)
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->count($name)
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->delete( $tag, [$index] )
    Delete the fields with the specified $tag. The deleted fields are returned. If no index is given, then all are removed.

$obj->get( $name, [$index] )
    Get all the header fields with the specified $name. In scalar context, only the first fitting $name is returned. Even when only one $name is specified, multiple lines may be returned in list context: some fields appear more than once in a header.

$obj->grepNames( [@names|ARRAY|Regexps] )
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->listGroup()
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->names()
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->print( [$fh] )
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->printSelected($fh, <STRING|Regexp>, ...)
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->printUndisclosed( [$fh] )
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->removeContentInfo()
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->removeField($field)
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->removeFields( <STRING|Regexp>, ... )
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->removeFieldsExcept( <STRING|Regexp>, ... )
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->removeListGroup()
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->removeResentGroups()
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->removeSpamGroups()
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->replace( $tag, $line, [$index] )
    Replace the field named $tag. from place $index (by default the first) by the $line. When $tag is "undef", it will be extracted from the $line first. This calls Mail::Message::Head::Complete::reset() on the message's head.

$obj->resentGroups()
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->reset($name, @fields)
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->set( $field | $line | <$name, $body, [$attrs]> )
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->spamDetected()
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->spamGroups( [$names] )
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->string()
    Inherited, see "Access to the header" in Mail::Message::Head::Complete

$obj->study( $name, [$index] )
    Inherited, see "Access to the header" in Mail::Message::Head

  About the body
Extends "About the body" in Mail::Message::Head::Complete.

$obj->guessBodySize()
    Inherited, see "About the body" in Mail::Message::Head

$obj->guessTimeStamp()
    Inherited, see "About the body" in Mail::Message::Head::Complete

$obj->isMultipart()
    Inherited, see "About the body" in Mail::Message::Head

$obj->recvstamp()
    Inherited, see "About the body" in Mail::Message::Head::Complete

$obj->timestamp()
    Inherited, see "About the body" in Mail::Message::Head::Complete

  Internals
Extends "Internals" in Mail::Message::Head::Complete.

$obj->addNoRealize($field)
    Inherited, see "Internals" in Mail::Message::Head

$obj->addOrderedFields($fields)
    Inherited, see "Internals" in Mail::Message::Head

$obj->createFromLine()
    Inherited, see "Internals" in Mail::Message::Head::Complete

$obj->createMessageId()
    Inherited, see "Internals" in Mail::Message::Head::Complete

$obj->fileLocation()
    Inherited, see "Internals" in Mail::Message::Head

$obj->load()
    Inherited, see "Internals" in Mail::Message::Head

$obj->messageIdPrefix( [$prefix, [$hostname]|CODE] )
Mail::Message::Replace::MailHeader->messageIdPrefix( [$prefix, [$hostname]|CODE] )
    Inherited, see "Internals" in Mail::Message::Head::Complete

$obj->moveLocation($distance)
    Inherited, see "Internals" in Mail::Message::Head

$obj->setNoRealize($field)
    Inherited, see "Internals" in Mail::Message::Head

  Error handling
Extends "Error handling" in Mail::Message::Head::Complete.

$obj->AUTOLOAD()
    Inherited, see "Error handling" in Mail::Reporter

$obj->addReport($object)
    Inherited, see "Error handling" in Mail::Reporter

$obj->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
Mail::Message::Replace::MailHeader->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
    Inherited, see "Error handling" in Mail::Reporter

$obj->errors()
    Inherited, see "Error handling" in Mail::Reporter

$obj->log( [$level, [$strings]] )
Mail::Message::Replace::MailHeader->log( [$level, [$strings]] )
    Inherited, see "Error handling" in Mail::Reporter

$obj->logPriority($level)
Mail::Message::Replace::MailHeader->logPriority($level)
    Inherited, see "Error handling" in Mail::Reporter

$obj->logSettings()
    Inherited, see "Error handling" in Mail::Reporter

$obj->notImplemented()
    Inherited, see "Error handling" in Mail::Reporter

$obj->report( [$level] )
    Inherited, see "Error handling" in Mail::Reporter

$obj->reportAll( [$level] )
    Inherited, see "Error handling" in Mail::Reporter

$obj->trace( [$level] )
    Inherited, see "Error handling" in Mail::Reporter

$obj->warnings()
    Inherited, see "Error handling" in Mail::Reporter

  Cleanup
Extends "Cleanup" in Mail::Message::Head::Complete.

$obj->DESTROY()
    Inherited, see "Cleanup" in Mail::Reporter

  Access to the header

  Simulating Mail::Header

$obj->as_string()
    Returns the whole header as one big scalar. Calls Mail::Message::Head::Complete::string().

$obj->cleanup()
    Cleanup memory usage. Not needed here.

$obj->combine( $tag, [$with] )
    I do not see any valid reason for this command, so did not implement it.

$obj->dup()
    Duplicate the header, which is simply clone().

$obj->empty()
    Clean-out the whole hash. Better not use this (simply create another header object), although it should work.

$obj->exists()
    Returns whether there are any fields.

$obj->extract(ARRAY)
    Extract (and remove) header fields from the array.

$obj->fold( [$length] )
    Refold all fields in the header, to $length or whatever fold_length() returns.

$obj->fold_length( [[$tag], $length] )
    Returns the line wrap, optionally after setting it to $length. The old value is returned. The $tag argument is ignored, because it is silly to have different lines fold in different ways. This method cannot be called statically anymore.

$obj->header( [ARRAY] )
    Extract the fields from the ARRAY, if specified, and then fold the fields. Returned is an array with all fields, produced via orderedFields().

$obj->header_hashref(HASH)
    If you are using this method, you must be stupid... anyway: I do not want to support it for now: use add() and friends.

$obj->mail_from( ['IGNORE'|'ERROR'|'COERCE'|'KEEP'] )
    What to do when a header line in the form `From ' is encountered. Valid values are "IGNORE" - ignore and discard the header, "ERROR" - invoke an error (call die), "COERCE" - rename them as Mail-From and "KEEP" - keep them.

$obj->modify( [BOOLEAN] )
    Refold the headers when they are added.

$obj->read($file)
    Read the header from the $file.

$obj->tags()
    Returns all the names of fields, implemented by Mail::Message::Head::Complete::names().

$obj->unfold( [$tag] )
    Remove the folding for all instances of $tag, or all fields at once.

  The nasty bits

$obj->isa($class)
Mail::Message::Replace::MailHeader->isa($class)
    Of course, the isa() class inheritance check should not see our nasty trick.

DETAILS
Extends "DETAILS" in Mail::Message::Head::Complete.

DIAGNOSTICS

Warning: Cannot remove field $name from header: not found.
    You ask to remove a field which is not known in the header. Using delete(), reset(), or set() to do the job will not result in warnings: those methods check the existence of the field first.

Warning: Field objects have an implied name ($name)
Error: Package $package does not implement $method.
    Fatal error: the specific package (or one of its superclasses) does not implement this method where it should. This message means that some other related classes do implement this method however the class at hand does not. Probably you should investigate this and probably inform the author of the package.

SEE ALSO
This module is part of Mail-Message distribution version 3.017, built on April 18, 2025. Website: http://perl.overmeer.net/CPAN/

LICENSE
Copyrights 2001-2025 by [Mark Overmeer <markov@cpan.org>]. For other contributors see ChangeLog.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://dev.perl.org/licenses/