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Mail::Message::Replace::MailHeader(3pm) User Contributed Perl Documentation Mail::Message::Replace::MailHeader(3pm)

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

  # 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.

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

METHODS

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

Constructors

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

$class->build( [PAIR|$field], ... )
Inherited, see "Constructors" in Mail::Message::Head::Complete
$obj->clone( [@names|ARRAY|Regexps] )
Inherited, see "Constructors" in Mail::Message::Head::Complete
$class->new( [$arg], %options )
The $arg is an array with header lines. Improves base, see "Constructors" in Mail::Message::Head 

 -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'
How to handle the "From " lines. See mail_from().
Reformat all header lines when they come in: change the folding.

Attributes

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

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

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. Improves base, see "Access to the header" in Mail::Message::Head::Complete
$obj->addListGroup($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. Improves base, see "Access to the header" in Mail::Message::Head::Complete
$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. Improves base, see "Access to the header" in Mail::Message::Head
$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
$any->messageIdPrefix( [$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
$any->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
Inherited, see "Error handling" in Mail::Reporter
$obj->errors()
Inherited, see "Error handling" in Mail::Reporter
$any->log( [$level, [$strings]] )
Inherited, see "Error handling" in Mail::Reporter
$any->logPriority($level)
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(\@lines)
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. Improves base, see "Internals" in Mail::Message::Head
$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

$any->isa($class)
Of course, the isa() class inheritance check should not see our nasty trick.

DETAILS

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

DIAGNOSTICS

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. Cast by removeField()
Cast by build()
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. Cast by notImplemented()

SEE ALSO

This module is part of Mail-Message version 3.019, built on November 24, 2025. Website: http://perl.overmeer.net/CPAN/

LICENSE

For contributors see file ChangeLog.

This software is copyright (c) 2001-2025 by Mark Overmeer.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

2025-12-07 perl v5.40.1