# phpman > man > Mail::Message::Body::File(3pm)

## NAME
    [Mail::Message::Body::File](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AFile/markdown) - body of a message temporarily stored in a file

## INHERITANCE
     [Mail::Message::Body::File](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AFile/markdown)
       is a [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)
       is a [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

## SYNOPSIS
     See [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

## DESCRIPTION
    The body (content) of a message can be stored in various ways. In this documentation you find
    the description of extra functionality you have when a message is stored in a file.

    Storing a whole message is a file is useful when the body is large. Although access through a
    file is slower, it is saving a lot of memory.

    Extends "DESCRIPTION" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

## OVERLOADED
    Extends "OVERLOADED" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

    overload: ""
        Inherited, see "OVERLOADED" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    overload: '==' and '!='
        Inherited, see "OVERLOADED" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    overload: @{}
        Inherited, see "OVERLOADED" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    overload: bool
        Inherited, see "OVERLOADED" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

## METHODS
    Extends "METHODS" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

### Constructors
    Extends "Constructors" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

    $obj->clone()
        Inherited, see "Constructors" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    [Mail::Message::Body::File](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AFile/markdown)->new(%options)
         -Option           --Defined in         --Default
          based_on           [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  undef
          charset            [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  'PERL' or <undef>
          checked            [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  <false>
          content_id         [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  undef
          data               [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  undef
          description        [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  undef
          disposition        [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  undef
          eol                [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  'NATIVE'
          file               [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  undef
          filename           [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  undef
          log                [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)       'WARNINGS'
          message            [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  undef
          mime_type          [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  'text/plain'
          modified           [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  <false>
          trace              [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)       'WARNINGS'
          transfer_encoding  [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)  'none'

        based_on => BODY
        charset => CHARSET|'PERL'
        checked => BOOLEAN
        content_id => STRING
        data => ARRAY-OF-LINES | STRING
        description => STRING|FIELD
        disposition => STRING|FIELD
        eol => 'CR'|'LF'|'CRLF'|'NATIVE'
        file => FILENAME|FILEHANDLE|IOHANDLE
        filename => FILENAME
        log => LEVEL
        message => MESSAGE
        mime_type => STRING|FIELD|MIME
        modified => BOOLEAN
        trace => LEVEL
        transfer_encoding => STRING|FIELD

### Constructing a body
    Extends "Constructing a body" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

    $obj->attach($messages, %options)
        Inherited, see "Constructing a body" in [Mail::Message::Body::Construct](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AConstruct/markdown)

    $obj->check()
        Inherited, see "Constructing a body" in [Mail::Message::Body::Encode](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AEncode/markdown)

    $obj->concatenate($components)
        Inherited, see "Constructing a body" in [Mail::Message::Body::Construct](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AConstruct/markdown)

    $obj->decoded(%options)
        Inherited, see "Constructing a body" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->encode(%options)
        Inherited, see "Constructing a body" in [Mail::Message::Body::Encode](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AEncode/markdown)

    $obj->encoded()
        Inherited, see "Constructing a body" in [Mail::Message::Body::Encode](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AEncode/markdown)

    $obj->eol( ['CR'|'LF'|'CRLF'|'NATIVE'] )
        Inherited, see "Constructing a body" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->foreachLine(CODE)
        Inherited, see "Constructing a body" in [Mail::Message::Body::Construct](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AConstruct/markdown)

    $obj->stripSignature(%options)
        Inherited, see "Constructing a body" in [Mail::Message::Body::Construct](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AConstruct/markdown)

    $obj->unify($body)
        Inherited, see "Constructing a body" in [Mail::Message::Body::Encode](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AEncode/markdown)

### The body
    Extends "The body" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

    $obj->isDelayed()
        Inherited, see "The body" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->isMultipart()
        Inherited, see "The body" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->isNested()
        Inherited, see "The body" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->message( [$message] )
        Inherited, see "The body" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->partNumberOf($part)
        Inherited, see "The body" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

### About the payload
    Extends "About the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

    $obj->charset()
        Inherited, see "About the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->checked( [BOOLEAN] )
        Inherited, see "About the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->contentId( [STRING|$field] )
        Inherited, see "About the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->description( [STRING|$field] )
        Inherited, see "About the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->disposition( [STRING|$field] )
        Inherited, see "About the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->dispositionFilename( [$directory] )
        Inherited, see "About the payload" in [Mail::Message::Body::Encode](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AEncode/markdown)

    $obj->isBinary()
        Inherited, see "About the payload" in [Mail::Message::Body::Encode](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AEncode/markdown)

    $obj->isText()
        Inherited, see "About the payload" in [Mail::Message::Body::Encode](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AEncode/markdown)

    $obj->mimeType()
        Inherited, see "About the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->nrLines()
        Inherited, see "About the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->size()
        Inherited, see "About the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->transferEncoding( [STRING|$field] )
        Inherited, see "About the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->type( [STRING|$field] )
        Inherited, see "About the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

### Access to the payload
    Extends "Access to the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

    $obj->endsOnNewline()
        Inherited, see "Access to the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->file()
        Inherited, see "Access to the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->lines()
        Inherited, see "Access to the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->print( [$fh] )
        Inherited, see "Access to the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->printEscapedFrom($fh)
        Inherited, see "Access to the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->string()
        Inherited, see "Access to the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->stripTrailingNewline()
        Inherited, see "Access to the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->write(%options)
        Inherited, see "Access to the payload" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

### Internals
    Extends "Internals" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

    $obj->addTransferEncHandler( $name, <$class|$object> )
    [Mail::Message::Body::File](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AFile/markdown)->addTransferEncHandler( $name, <$class|$object> )
        Inherited, see "Internals" in [Mail::Message::Body::Encode](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AEncode/markdown)

    $obj->contentInfoFrom($head)
        Inherited, see "Internals" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->contentInfoTo($head)
        Inherited, see "Internals" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->fileLocation( [$begin, $end] )
        Inherited, see "Internals" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->getTransferEncHandler($type)
        Inherited, see "Internals" in [Mail::Message::Body::Encode](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AEncode/markdown)

    $obj->isModified()
        Inherited, see "Internals" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->load()
        Inherited, see "Internals" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->modified( [BOOLEAN] )
        Inherited, see "Internals" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->moveLocation( [$distance] )
        Inherited, see "Internals" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->read( $parser, $head, $bodytype, [$chars, [$lines]] )
        Inherited, see "Internals" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->tempFilename( [$filename] )
        Returns the name of the temporary file which is used to store this body.

### Error handling
    Extends "Error handling" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

    $obj->AUTOLOAD()
        Inherited, see "Error handling" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown)

    $obj->addReport($object)
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
    [Mail::Message::Body::File](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AFile/markdown)->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->errors()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->log( [$level, [$strings]] )
    [Mail::Message::Body::File](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AFile/markdown)->log( [$level, [$strings]] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->logPriority($level)
    [Mail::Message::Body::File](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AFile/markdown)->logPriority($level)
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->logSettings()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->notImplemented()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->report( [$level] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->reportAll( [$level] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->trace( [$level] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->warnings()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

### Cleanup
    Extends "Cleanup" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

    $obj->DESTROY()
        The temporary file is automatically removed when the body is not required anymore.

## DETAILS
    Extends "DETAILS" in [Mail::Message::Body](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody/markdown).

## DIAGNOSTICS
    Error: Cannot write to temporary body file $filename: $!
        The message body is to be stored in a temporary file (probably because it is a large body),
        but for the indicated reason, this file cannot be created.

    Warning: Charset $name is not known
        The encoding or decoding of a message body encounters a character set which is not
        understood by Perl's Encode module.

    Warning: No decoder defined for transfer encoding $name.
        The data (message body) is encoded in a way which is not currently understood, therefore no
        decoding (or recoding) can take place.

    Warning: No encoder defined for transfer encoding $name.
        The data (message body) has been decoded, but the required encoding is unknown. The decoded
        data is returned.

    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.

    Error: Unable to read file $filename for message body file: $!
        A [Mail::Message::Body::File](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ABody%3A%3AFile/markdown) object is to be created from a named file, but it is impossible
        to read that file to retrieve the lines within. Therefore, no copy to a temporary file can
        be made.

    Warning: Unknown line terminator $eol ignored

## SEE ALSO
    This module is part of Mail-Message distribution version 3.012, built on February 11, 2022.
    Website: <http://perl.overmeer.net/CPAN/>

## LICENSE
    Copyrights 2001-2022 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/>