Section: User Contributed Perl Documentation (3)
MIME::Type - description of one MIME type
my $mimetypes = MIME::Types->new;
my MIME::Type $plaintext = $mimetypes->type('text/plain');
print $plaintext->mediaType; # text
print $plaintext->subType; # plain
my @ext = $plaintext->extensions;
print "@ext" # txt asc c cc h hh cpp
print $plaintext->encoding # 8bit
if($plaintext->isBinary) # false
if($plaintext->isAscii) # true
if($plaintext eq 'text/plain') # same
print MIME::Type->simplified('x-appl/x-zip') # 'appl/zip'
types are used in MIME
entities, for instance as part of e-mail
traffic. Sometimes real knowledge about a mime-type is need.
Objects of "MIME::Type"
store the information on one such type.
- overload: string comparison
When a MIME::Type object is compared to either a string or another
MIME::TYpe, the equals() method is called. Comparison is smart,
which means that it extends common string comparison with some
features which are defined in the related RFCs.
- overload: stringification
The stringification (use of the object in a place where a string
is required) will result in the type name, the same as type()
example: use of stringification
my $mime = MIME::Type->new('text/html');
print "$mime\n"; # explicit stringification
print $mime; # implicit stringification
Create (instantiate) a new MIME::Type object which manages one
encoding <depends on type>
simplified <derived from type>
- encoding => '7bit'|'8bit'|'base64'|'quoted-printable'
How must this data be encoded to be transported safely. The default
depends on the type: mimes with as main type "text/" will default
to "quoted-printable" and all other to "base64".
- extensions => REF-ARRAY
An array of extensions which are using this mime.
- simplified => STRING
The mime types main- and sub-label can both start with "x-", to indicate
that is a non-registered name. Of course, after registration this flag
can disappear which adds to the confusion. The simplified string has the
"x-" thingies removed and are translated to lower-case.
- system => REGEX
Regular expression which defines for which systems this rule is valid. The
REGEX is matched on $^O.
- type => STRING
The type which is defined here. It consists of a type and a sub-type,
both case-insensitive. This module will return lower-case, but accept
Returns the type of encoding which is required to transport data of this
Returns a list of extensions which are known to be used for this
- $obj->simplified( [$string] )
- MIME::Type->simplified( [$string] )
Returns the simplified mime type for this object or the specified STRING.
Mime type names can get officially registered. Until then, they have to
carry an "x-" preamble to indicate that. Of course, after recognition,
the "x-" can disappear. In many cases, we prefer the simplified version
of the type.
example: results of simplified()
my $mime = MIME::Type->new(type => 'x-appl/x-zip');
print $mime->simplified; # 'appl/zip'
print $mime->simplified('text/PLAIN'); # 'text/plain'
print MIME::Type->simplified('x-xyz/x-abc'); # 'xyz/abc'
Returns the regular expression which can be used to determine whether this
type is active on the system where you are working on.
Returns the long type of this object, for instance 'text/plain'
Compare this mime-type object with a STRING or other object. In case of
a STRING, simplification will take place.
Old name for isText().
Returns true when the type is not known to be text. See isText().
[2.00] Return "true" when the type is defined for experimental
use; the subtype starts with "x."
[2.00] Return "true" when the type is defined by a person for
private use; the subtype starts with "prs."
Mime-types which are not registered by IANA nor defined in RFCs shall
start with an "x-". This counts for as well the media-type as the
sub-type. In case either one of the types starts with "x-" this
method will return false.
Returns true when the type is in the list of known signatures.
[2.05] All types which may have the charset attribute, are text. However,
there is currently no record of attributes in this module... so we guess.
[2.00] Return "true" when the type is defined by a vendor; the subtype
starts with "vnd."
The media type of the simplified mime.
For 'text/plain' it will return 'text'.
For historical reasons, the 'mainType' method still can be used
to retrieve the same value. However, that method is deprecated.
The sub type of the simplified mime.
For 'text/plain' it will return 'plain'.
- Error: Type parameter is obligatory.
When a MIME::Type object is created, the type itself must be
specified with the "type" option flag.
This module is part of MIME-Types distribution version 2.17,
built on January 26, 2018. Website: http://perl.overmeer.net/CPAN/
Copyrights 1999-2018 by [Mark Overmeer <firstname.lastname@example.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.