Provided by: libmail-message-perl_3.019-1_all 
NAME
Mail::Message::Field::Fast - one line of a message header
INHERITANCE
Mail::Message::Field::Fast
is a Mail::Message::Field
is a Mail::Reporter
SYNOPSIS
See Mail::Message::Field
DESCRIPTION
This is the faster, but less flexible implementation of a header field. The data is stored in an array,
and some hacks are made to speeds things up. Be gentle with me, and consider that each message contains
many of these lines, so speed is very important here.
Extends "DESCRIPTION" in Mail::Message::Field.
OVERLOADED
Extends "OVERLOADED" in Mail::Message::Field.
overload: "" stringification
Inherited, see "OVERLOADED" in Mail::Message::Field
overload: 0+ numification
Inherited, see "OVERLOADED" in Mail::Message::Field
overload: <=> numeric comparison
Inherited, see "OVERLOADED" in Mail::Message::Field
overload: bool boolean
Inherited, see "OVERLOADED" in Mail::Message::Field
overload: cmp string comparison
Inherited, see "OVERLOADED" in Mail::Message::Field
METHODS
Extends "METHODS" in Mail::Message::Field.
Constructors
Extends "Constructors" in Mail::Message::Field.
$obj->clone()
Inherited, see "Constructors" in Mail::Message::Field
$class->new(($line | $name, $body, [$attributes]), %options)
The constructor of this object does not follow the usual practise within the Mail::Box suite: it does
not use the constructor Mail::Reporter::new(). Therefor it has no logging or tracing facilities.
The method can be used in one of the following ways:
• new($line, %options)
Pass a $line as it could be found in a file: a (possibly folded) line which is terminated by a
new-line.
• new($name, $body, [$attributes], %options)
A set of values which shape the line.
Create a new header field object. Specify the whole $line (encoded octets) at once, and it will be
split-up for you. I case you already have the parts of the header line, you may specify them
separately as $name and field $body.
In case you specify a single $body object, or an ARRAY of objects, these are processed to become
suitable to fill a field, usually by simple strification. When you specify one or more Mail::Address
objects, these are transformed into a string using their "format" method. You may also add one
Mail::Message::Field, whose body is taken. In case of an array, the elements are joined into one
string with a comma.
The $attributes can be exactly one string which may contain multiple attributes at once, quoted and
formatted as required in RFC2822. As alternative, list of key-value pairs can be used. In this
case, the values will get quoted if needed and everything formatted as the protocol demands.
Improves base, see "Constructors" in Mail::Message::Field
-Option--Defined in --Default
log Mail::Reporter <disabled>
trace Mail::Reporter <disabled>
log => LEVEL
trace => LEVEL
» example:
my $mime = Mail::Message::Field->new(
'Content-Type: text/plain; charset=US-ASCII');
my $mime = Mail::Message::Field->new(
'Content-Type' => 'text/plain; charset=US-ASCII');
my $mime = Mail::Message::Field->new(
'Content-Type' => 'text/plain', 'charset=US-ASCII');
my $mime = Mail::Message::Field->new(
'Content-Type' => 'text/plain', charset => 'Latin1');
my $mime = Mail::Message::Field->new(
To => Mail::Address->new('My', 'me@example.com');
my $mime = Mail::Message::Field->new( Cc => [
Mail::Address->new('You', 'you@example.com'),
Mail::Address->new('His', 'he@example.com')
]);
But in practice, you can simply call
my $head = Mail::Message::Head->new;
$head->add( 'Content-Type' => 'text/plain', charset => 'utf8');
which implicitly calls this constructor (when needed). You can specify the same things for
Mail::Message::Head::Complete::add() as this "new" accepts.
Attributes
Extends "Attributes" in Mail::Message::Field.
$obj->logSettings()
Inherited, see "Attributes" in Mail::Reporter
The field
Extends "The field" in Mail::Message::Field.
$any->isStructured()
Inherited, see "The field" in Mail::Message::Field
$obj->length()
Inherited, see "The field" in Mail::Message::Field
$obj->nrLines()
Inherited, see "The field" in Mail::Message::Field
$obj->print( [$fh] )
Inherited, see "The field" in Mail::Message::Field
$obj->size()
Inherited, see "The field" in Mail::Message::Field
$obj->string( [$wrap] )
Inherited, see "The field" in Mail::Message::Field
$obj->toDisclose()
Inherited, see "The field" in Mail::Message::Field
Access to the name
Extends "Access to the name" in Mail::Message::Field.
$obj->Name()
Inherited, see "Access to the name" in Mail::Message::Field
$obj->name()
Inherited, see "Access to the name" in Mail::Message::Field
$obj->wellformedName( [STRING] )
Inherited, see "Access to the name" in Mail::Message::Field
Access to the body
Extends "Access to the body" in Mail::Message::Field.
$obj->body()
Inherited, see "Access to the body" in Mail::Message::Field
$obj->folded()
Inherited, see "Access to the body" in Mail::Message::Field
$obj->foldedBody( [$body] )
Inherited, see "Access to the body" in Mail::Message::Field
$any->stripCFWS( [STRING] )
Inherited, see "Access to the body" in Mail::Message::Field
$obj->unfoldedBody( [$body, [$wrap]] )
Inherited, see "Access to the body" in Mail::Message::Field
Access to the content
Extends "Access to the content" in Mail::Message::Field.
$obj->addresses()
Inherited, see "Access to the content" in Mail::Message::Field
$obj->attribute( $name, [$value] )
Inherited, see "Access to the content" in Mail::Message::Field
$obj->attributes()
Inherited, see "Access to the content" in Mail::Message::Field
$obj->comment( [STRING] )
Inherited, see "Access to the content" in Mail::Message::Field
$obj->study()
Inherited, see "Access to the content" in Mail::Message::Field
$any->toDate( [$time] )
Inherited, see "Access to the content" in Mail::Message::Field
$obj->toInt()
Inherited, see "Access to the content" in Mail::Message::Field
Other methods
Extends "Other methods" in Mail::Message::Field.
$any->dateToTimestamp(STRING)
Inherited, see "Other methods" in Mail::Message::Field
Internals
Extends "Internals" in Mail::Message::Field.
$obj->consume( $line | <$name,<$body|$objects>> )
Inherited, see "Internals" in Mail::Message::Field
$obj->defaultWrapLength( [$length] )
Inherited, see "Internals" in Mail::Message::Field
$any->fold( $name, $body, [$maxchars] )
Inherited, see "Internals" in Mail::Message::Field
$obj->setWrapLength( [$length] )
Inherited, see "Internals" in Mail::Message::Field
$obj->stringifyData(STRING|ARRAY|$objects)
Inherited, see "Internals" in Mail::Message::Field
$obj->unfold(STRING)
Inherited, see "Internals" in Mail::Message::Field
Error handling
Extends "Error handling" in Mail::Message::Field.
$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::Field.
$obj->DESTROY()
Inherited, see "Cleanup" in Mail::Reporter
DETAILS
Extends "DETAILS" in Mail::Message::Field.
DIAGNOSTICS
Warning: Field content is not numerical: $content
The numeric value of a field is requested (for instance the "Lines" or "Content-Length" fields should
be numerical), however the data contains weird characters. Cast by toInt()
Error: Field name too long (max $length), in '$name'
It is not specified in the RFCs how long a field name can be, but at least it should be a few
characters shorter than the line wrap. Cast by fold()
Warning: Illegal character in field name $name
A new field is being created which does contain characters not permitted by the RFCs. Using this
field in messages may break other e-mail clients or transfer agents, and therefore mutulate or
extinguish your message. Cast by consume()
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. 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.
perl v5.40.1 2025-12-07 Mail::Message::Field::Fast(3pm)